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Comparing libev/ev.c (file contents):
Revision 1.210 by root, Sat Feb 9 00:34:11 2008 UTC vs.
Revision 1.433 by root, Tue May 15 13:03:20 2012 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011,2012 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
40	#ifdef __cplusplus	40	/* this big block deduces configuration from config.h */
41	extern "C" {
42	#endif
43
44	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
45	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
46	# include EV_CONFIG_H	43	# include EV_CONFIG_H
47	# else	44	# else
48	# include "config.h"	45	# include "config.h"
49	# endif	46	# endif
50		47
		48	#if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	#endif
		53
		54	# if HAVE_CLOCK_SYSCALL
		55	# ifndef EV_USE_CLOCK_SYSCALL
		56	# define EV_USE_CLOCK_SYSCALL 1
		57	# ifndef EV_USE_REALTIME
		58	# define EV_USE_REALTIME 0
		59	# endif
		60	# ifndef EV_USE_MONOTONIC
		61	# define EV_USE_MONOTONIC 1
		62	# endif
		63	# endif
		64	# elif !defined EV_USE_CLOCK_SYSCALL
		65	# define EV_USE_CLOCK_SYSCALL 0
		66	# endif
		67
51	# if HAVE_CLOCK_GETTIME	68	# if HAVE_CLOCK_GETTIME
52	# ifndef EV_USE_MONOTONIC	69	# ifndef EV_USE_MONOTONIC
53	# define EV_USE_MONOTONIC 1	70	# define EV_USE_MONOTONIC 1
54	# endif	71	# endif
55	# ifndef EV_USE_REALTIME	72	# ifndef EV_USE_REALTIME
56	# define EV_USE_REALTIME 1	73	# define EV_USE_REALTIME 0
57	# endif	74	# endif
58	# else	75	# else
59	# ifndef EV_USE_MONOTONIC	76	# ifndef EV_USE_MONOTONIC
60	# define EV_USE_MONOTONIC 0	77	# define EV_USE_MONOTONIC 0
61	# endif	78	# endif
62	# ifndef EV_USE_REALTIME	79	# ifndef EV_USE_REALTIME
63	# define EV_USE_REALTIME 0	80	# define EV_USE_REALTIME 0
64	# endif	81	# endif
65	# endif	82	# endif
66		83
		84	# if HAVE_NANOSLEEP
67	# ifndef EV_USE_NANOSLEEP	85	# ifndef EV_USE_NANOSLEEP
68	# if HAVE_NANOSLEEP
69	# define EV_USE_NANOSLEEP 1	86	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		87	# endif
70	# else	88	# else
		89	# undef EV_USE_NANOSLEEP
71	# define EV_USE_NANOSLEEP 0	90	# define EV_USE_NANOSLEEP 0
		91	# endif
		92
		93	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		94	# ifndef EV_USE_SELECT
		95	# define EV_USE_SELECT EV_FEATURE_BACKENDS
72	# endif	96	# endif
		97	# else
		98	# undef EV_USE_SELECT
		99	# define EV_USE_SELECT 0
73	# endif	100	# endif
74		101
		102	# if HAVE_POLL && HAVE_POLL_H
75	# ifndef EV_USE_SELECT	103	# ifndef EV_USE_POLL
76	# if HAVE_SELECT && HAVE_SYS_SELECT_H	104	# define EV_USE_POLL EV_FEATURE_BACKENDS
77	# define EV_USE_SELECT 1
78	# else
79	# define EV_USE_SELECT 0
80	# endif	105	# endif
81	# endif
82
83	# ifndef EV_USE_POLL
84	# if HAVE_POLL && HAVE_POLL_H
85	# define EV_USE_POLL 1
86	# else	106	# else
		107	# undef EV_USE_POLL
87	# define EV_USE_POLL 0	108	# define EV_USE_POLL 0
88	# endif
89	# endif	109	# endif
90		110
91	# ifndef EV_USE_EPOLL
92	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	111	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93	# define EV_USE_EPOLL 1	112	# ifndef EV_USE_EPOLL
94	# else	113	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
95	# define EV_USE_EPOLL 0
96	# endif	114	# endif
		115	# else
		116	# undef EV_USE_EPOLL
		117	# define EV_USE_EPOLL 0
97	# endif	118	# endif
98		119
		120	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
99	# ifndef EV_USE_KQUEUE	121	# ifndef EV_USE_KQUEUE
100	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	122	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
101	# define EV_USE_KQUEUE 1
102	# else
103	# define EV_USE_KQUEUE 0
104	# endif	123	# endif
		124	# else
		125	# undef EV_USE_KQUEUE
		126	# define EV_USE_KQUEUE 0
105	# endif	127	# endif
106		128
107	# ifndef EV_USE_PORT
108	# if HAVE_PORT_H && HAVE_PORT_CREATE	129	# if HAVE_PORT_H && HAVE_PORT_CREATE
109	# define EV_USE_PORT 1	130	# ifndef EV_USE_PORT
110	# else	131	# define EV_USE_PORT EV_FEATURE_BACKENDS
111	# define EV_USE_PORT 0
112	# endif	132	# endif
		133	# else
		134	# undef EV_USE_PORT
		135	# define EV_USE_PORT 0
113	# endif	136	# endif
114		137
115	# ifndef EV_USE_INOTIFY
116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	138	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117	# define EV_USE_INOTIFY 1	139	# ifndef EV_USE_INOTIFY
118	# else
119	# define EV_USE_INOTIFY 0	140	# define EV_USE_INOTIFY EV_FEATURE_OS
120	# endif	141	# endif
		142	# else
		143	# undef EV_USE_INOTIFY
		144	# define EV_USE_INOTIFY 0
121	# endif	145	# endif
122		146
		147	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		148	# ifndef EV_USE_SIGNALFD
		149	# define EV_USE_SIGNALFD EV_FEATURE_OS
		150	# endif
		151	# else
		152	# undef EV_USE_SIGNALFD
		153	# define EV_USE_SIGNALFD 0
123	#endif	154	# endif
124		155
125	#include <math.h>	156	# if HAVE_EVENTFD
		157	# ifndef EV_USE_EVENTFD
		158	# define EV_USE_EVENTFD EV_FEATURE_OS
		159	# endif
		160	# else
		161	# undef EV_USE_EVENTFD
		162	# define EV_USE_EVENTFD 0
		163	# endif
		164
		165	#endif
		166
126	#include <stdlib.h>	167	#include <stdlib.h>
		168	#include <string.h>
127	#include <fcntl.h>	169	#include <fcntl.h>
128	#include <stddef.h>	170	#include <stddef.h>
129		171
130	#include <stdio.h>	172	#include <stdio.h>
131		173
132	#include <assert.h>	174	#include <assert.h>
133	#include <errno.h>	175	#include <errno.h>
134	#include <sys/types.h>	176	#include <sys/types.h>
135	#include <time.h>	177	#include <time.h>
		178	#include <limits.h>
136		179
137	#include <signal.h>	180	#include <signal.h>
138		181
139	#ifdef EV_H	182	#ifdef EV_H
140	# include EV_H	183	# include EV_H
141	#else	184	#else
142	# include "ev.h"	185	# include "ev.h"
		186	#endif
		187
		188	#if EV_NO_THREADS
		189	# undef EV_NO_SMP
		190	# define EV_NO_SMP 1
		191	# undef ECB_NO_THREADS
		192	# define ECB_NO_THREADS 1
		193	#endif
		194	#if EV_NO_SMP
		195	# undef EV_NO_SMP
		196	# define ECB_NO_SMP 1
143	#endif	197	#endif
144		198
145	#ifndef _WIN32	199	#ifndef _WIN32
146	# include <sys/time.h>	200	# include <sys/time.h>
147	# include <sys/wait.h>	201	# include <sys/wait.h>
148	# include <unistd.h>	202	# include <unistd.h>
149	#else	203	#else
		204	# include <io.h>
150	# define WIN32_LEAN_AND_MEAN	205	# define WIN32_LEAN_AND_MEAN
		206	# include <winsock2.h>
151	# include <windows.h>	207	# include <windows.h>
152	# ifndef EV_SELECT_IS_WINSOCKET	208	# ifndef EV_SELECT_IS_WINSOCKET
153	# define EV_SELECT_IS_WINSOCKET 1	209	# define EV_SELECT_IS_WINSOCKET 1
154	# endif	210	# endif
		211	# undef EV_AVOID_STDIO
		212	#endif
		213
		214	/* OS X, in its infinite idiocy, actually HARDCODES
		215	* a limit of 1024 into their select. Where people have brains,
		216	* OS X engineers apparently have a vacuum. Or maybe they were
		217	* ordered to have a vacuum, or they do anything for money.
		218	* This might help. Or not.
		219	*/
		220	#define _DARWIN_UNLIMITED_SELECT 1
		221
		222	/* this block tries to deduce configuration from header-defined symbols and defaults */
		223
		224	/* try to deduce the maximum number of signals on this platform */
		225	#if defined EV_NSIG
		226	/* use what's provided */
		227	#elif defined NSIG
		228	# define EV_NSIG (NSIG)
		229	#elif defined _NSIG
		230	# define EV_NSIG (_NSIG)
		231	#elif defined SIGMAX
		232	# define EV_NSIG (SIGMAX+1)
		233	#elif defined SIG_MAX
		234	# define EV_NSIG (SIG_MAX+1)
		235	#elif defined _SIG_MAX
		236	# define EV_NSIG (_SIG_MAX+1)
		237	#elif defined MAXSIG
		238	# define EV_NSIG (MAXSIG+1)
		239	#elif defined MAX_SIG
		240	# define EV_NSIG (MAX_SIG+1)
		241	#elif defined SIGARRAYSIZE
		242	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		243	#elif defined _sys_nsig
		244	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		245	#else
		246	# error "unable to find value for NSIG, please report"
		247	/* to make it compile regardless, just remove the above line, */
		248	/* but consider reporting it, too! :) */
		249	# define EV_NSIG 65
		250	#endif
		251
		252	#ifndef EV_USE_FLOOR
		253	# define EV_USE_FLOOR 0
		254	#endif
		255
		256	#ifndef EV_USE_CLOCK_SYSCALL
		257	# if __linux && __GLIBC__ >= 2
		258	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
		259	# else
		260	# define EV_USE_CLOCK_SYSCALL 0
155	#endif	261	# endif
156		262	#endif
157	/**/
158		263
159	#ifndef EV_USE_MONOTONIC	264	#ifndef EV_USE_MONOTONIC
		265	# if defined _POSIX_MONOTONIC_CLOCK && _POSIX_MONOTONIC_CLOCK >= 0
		266	# define EV_USE_MONOTONIC EV_FEATURE_OS
		267	# else
160	# define EV_USE_MONOTONIC 0	268	# define EV_USE_MONOTONIC 0
		269	# endif
161	#endif	270	#endif
162		271
163	#ifndef EV_USE_REALTIME	272	#ifndef EV_USE_REALTIME
164	# define EV_USE_REALTIME 0	273	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165	#endif	274	#endif
166		275
167	#ifndef EV_USE_NANOSLEEP	276	#ifndef EV_USE_NANOSLEEP
		277	# if _POSIX_C_SOURCE >= 199309L
		278	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		279	# else
168	# define EV_USE_NANOSLEEP 0	280	# define EV_USE_NANOSLEEP 0
		281	# endif
169	#endif	282	#endif
170		283
171	#ifndef EV_USE_SELECT	284	#ifndef EV_USE_SELECT
172	# define EV_USE_SELECT 1	285	# define EV_USE_SELECT EV_FEATURE_BACKENDS
173	#endif	286	#endif
174		287
175	#ifndef EV_USE_POLL	288	#ifndef EV_USE_POLL
176	# ifdef _WIN32	289	# ifdef _WIN32
177	# define EV_USE_POLL 0	290	# define EV_USE_POLL 0
178	# else	291	# else
179	# define EV_USE_POLL 1	292	# define EV_USE_POLL EV_FEATURE_BACKENDS
180	# endif	293	# endif
181	#endif	294	#endif
182		295
183	#ifndef EV_USE_EPOLL	296	#ifndef EV_USE_EPOLL
		297	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		298	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
		299	# else
184	# define EV_USE_EPOLL 0	300	# define EV_USE_EPOLL 0
		301	# endif
185	#endif	302	#endif
186		303
187	#ifndef EV_USE_KQUEUE	304	#ifndef EV_USE_KQUEUE
188	# define EV_USE_KQUEUE 0	305	# define EV_USE_KQUEUE 0
189	#endif	306	#endif
…		…
191	#ifndef EV_USE_PORT	308	#ifndef EV_USE_PORT
192	# define EV_USE_PORT 0	309	# define EV_USE_PORT 0
193	#endif	310	#endif
194		311
195	#ifndef EV_USE_INOTIFY	312	#ifndef EV_USE_INOTIFY
		313	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		314	# define EV_USE_INOTIFY EV_FEATURE_OS
		315	# else
196	# define EV_USE_INOTIFY 0	316	# define EV_USE_INOTIFY 0
		317	# endif
197	#endif	318	#endif
198		319
199	#ifndef EV_PID_HASHSIZE	320	#ifndef EV_PID_HASHSIZE
200	# if EV_MINIMAL	321	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
201	# define EV_PID_HASHSIZE 1	322	#endif
		323
		324	#ifndef EV_INOTIFY_HASHSIZE
		325	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
		326	#endif
		327
		328	#ifndef EV_USE_EVENTFD
		329	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		330	# define EV_USE_EVENTFD EV_FEATURE_OS
202	# else	331	# else
203	# define EV_PID_HASHSIZE 16	332	# define EV_USE_EVENTFD 0
204	# endif	333	# endif
205	#endif	334	#endif
206		335
207	#ifndef EV_INOTIFY_HASHSIZE	336	#ifndef EV_USE_SIGNALFD
208	# if EV_MINIMAL	337	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
209	# define EV_INOTIFY_HASHSIZE 1	338	# define EV_USE_SIGNALFD EV_FEATURE_OS
210	# else	339	# else
211	# define EV_INOTIFY_HASHSIZE 16	340	# define EV_USE_SIGNALFD 0
212	# endif	341	# endif
213	#endif	342	#endif
214		343
215	/**/	344	#if 0 /* debugging */
		345	# define EV_VERIFY 3
		346	# define EV_USE_4HEAP 1
		347	# define EV_HEAP_CACHE_AT 1
		348	#endif
		349
		350	#ifndef EV_VERIFY
		351	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
		352	#endif
		353
		354	#ifndef EV_USE_4HEAP
		355	# define EV_USE_4HEAP EV_FEATURE_DATA
		356	#endif
		357
		358	#ifndef EV_HEAP_CACHE_AT
		359	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
		360	#endif
		361
		362	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		363	/* which makes programs even slower. might work on other unices, too. */
		364	#if EV_USE_CLOCK_SYSCALL
		365	# include <sys/syscall.h>
		366	# ifdef SYS_clock_gettime
		367	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		368	# undef EV_USE_MONOTONIC
		369	# define EV_USE_MONOTONIC 1
		370	# else
		371	# undef EV_USE_CLOCK_SYSCALL
		372	# define EV_USE_CLOCK_SYSCALL 0
		373	# endif
		374	#endif
		375
		376	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		377
		378	#ifdef _AIX
		379	/* AIX has a completely broken poll.h header */
		380	# undef EV_USE_POLL
		381	# define EV_USE_POLL 0
		382	#endif
216		383
217	#ifndef CLOCK_MONOTONIC	384	#ifndef CLOCK_MONOTONIC
218	# undef EV_USE_MONOTONIC	385	# undef EV_USE_MONOTONIC
219	# define EV_USE_MONOTONIC 0	386	# define EV_USE_MONOTONIC 0
220	#endif	387	#endif
…		…
228	# undef EV_USE_INOTIFY	395	# undef EV_USE_INOTIFY
229	# define EV_USE_INOTIFY 0	396	# define EV_USE_INOTIFY 0
230	#endif	397	#endif
231		398
232	#if !EV_USE_NANOSLEEP	399	#if !EV_USE_NANOSLEEP
233	# ifndef _WIN32	400	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		401	# if !defined _WIN32 && !defined __hpux
234	# include <sys/select.h>	402	# include <sys/select.h>
235	# endif	403	# endif
236	#endif	404	#endif
237		405
238	#if EV_USE_INOTIFY	406	#if EV_USE_INOTIFY
		407	# include <sys/statfs.h>
239	# include <sys/inotify.h>	408	# include <sys/inotify.h>
		409	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		410	# ifndef IN_DONT_FOLLOW
		411	# undef EV_USE_INOTIFY
		412	# define EV_USE_INOTIFY 0
240	#endif	413	# endif
		414	#endif
241		415
242	#if EV_SELECT_IS_WINSOCKET	416	#if EV_USE_EVENTFD
		417	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
243	# include <winsock.h>	418	# include <stdint.h>
		419	# ifndef EFD_NONBLOCK
		420	# define EFD_NONBLOCK O_NONBLOCK
		421	# endif
		422	# ifndef EFD_CLOEXEC
		423	# ifdef O_CLOEXEC
		424	# define EFD_CLOEXEC O_CLOEXEC
		425	# else
		426	# define EFD_CLOEXEC 02000000
		427	# endif
		428	# endif
		429	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
		430	#endif
		431
		432	#if EV_USE_SIGNALFD
		433	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		434	# include <stdint.h>
		435	# ifndef SFD_NONBLOCK
		436	# define SFD_NONBLOCK O_NONBLOCK
		437	# endif
		438	# ifndef SFD_CLOEXEC
		439	# ifdef O_CLOEXEC
		440	# define SFD_CLOEXEC O_CLOEXEC
		441	# else
		442	# define SFD_CLOEXEC 02000000
		443	# endif
		444	# endif
		445	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
		446
		447	struct signalfd_siginfo
		448	{
		449	uint32_t ssi_signo;
		450	char pad[128 - sizeof (uint32_t)];
		451	};
244	#endif	452	#endif
245		453
246	/**/	454	/**/
247		455
		456	#if EV_VERIFY >= 3
		457	# define EV_FREQUENT_CHECK ev_verify (EV_A)
		458	#else
		459	# define EV_FREQUENT_CHECK do { } while (0)
		460	#endif
		461
248	/*	462	/*
249	* This is used to avoid floating point rounding problems.	463	* 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.	464	* This value is good at least till the year 4000.
254	* Better solutions welcome.
255	*/	465	*/
256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	466	#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
		467	/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
257		468
258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	469	#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) */	470	#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		471
		472	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
		473	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
		474
		475	/* the following is ecb.h embedded into libev - use update_ev_c to update from an external copy */
		476	/* ECB.H BEGIN */
		477	/*
		478	* libecb - http://software.schmorp.de/pkg/libecb
		479	*
		480	* Copyright (©) 2009-2012 Marc Alexander Lehmann <libecb@schmorp.de>
		481	* Copyright (©) 2011 Emanuele Giaquinta
		482	* All rights reserved.
		483	*
		484	* Redistribution and use in source and binary forms, with or without modifica-
		485	* tion, are permitted provided that the following conditions are met:
		486	*
		487	* 1. Redistributions of source code must retain the above copyright notice,
		488	* this list of conditions and the following disclaimer.
		489	*
		490	* 2. Redistributions in binary form must reproduce the above copyright
		491	* notice, this list of conditions and the following disclaimer in the
		492	* documentation and/or other materials provided with the distribution.
		493	*
		494	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		495	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		496	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		497	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		498	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		499	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		500	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		501	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		502	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		503	* OF THE POSSIBILITY OF SUCH DAMAGE.
		504	*/
		505
		506	#ifndef ECB_H
		507	#define ECB_H
		508
		509	#ifdef _WIN32
		510	typedef signed char int8_t;
		511	typedef unsigned char uint8_t;
		512	typedef signed short int16_t;
		513	typedef unsigned short uint16_t;
		514	typedef signed int int32_t;
		515	typedef unsigned int uint32_t;
262	#if __GNUC__ >= 4	516	#if __GNUC__
263	# define expect(expr,value) __builtin_expect ((expr),(value))	517	typedef signed long long int64_t;
264	# define noinline __attribute__ ((noinline))	518	typedef unsigned long long uint64_t;
		519	#else /* _MSC_VER || __BORLANDC__ */
		520	typedef signed __int64 int64_t;
		521	typedef unsigned __int64 uint64_t;
		522	#endif
265	#else	523	#else
266	# define expect(expr,value) (expr)	524	#include <inttypes.h>
267	# define noinline
268	# if __STDC_VERSION__ < 199901L
269	# define inline
270	# endif	525	#endif
		526
		527	/* many compilers define _GNUC_ to some versions but then only implement
		528	* what their idiot authors think are the "more important" extensions,
		529	* causing enormous grief in return for some better fake benchmark numbers.
		530	* or so.
		531	* we try to detect these and simply assume they are not gcc - if they have
		532	* an issue with that they should have done it right in the first place.
		533	*/
		534	#ifndef ECB_GCC_VERSION
		535	#if !defined __GNUC_MINOR__ || defined __INTEL_COMPILER || defined __SUNPRO_C || defined __SUNPRO_CC || defined __llvm__ || defined __clang__
		536	#define ECB_GCC_VERSION(major,minor) 0
		537	#else
		538	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
271	#endif	539	#endif
		540	#endif
272		541
		542	/*****************************************************************************/
		543
		544	/* ECB_NO_THREADS - ecb is not used by multiple threads, ever */
		545	/* ECB_NO_SMP - ecb might be used in multiple threads, but only on a single cpu */
		546
		547	#if ECB_NO_THREADS
		548	# define ECB_NO_SMP 1
		549	#endif
		550
		551	#if ECB_NO_THREADS || ECB_NO_SMP
		552	#define ECB_MEMORY_FENCE do { } while (0)
		553	#endif
		554
		555	#ifndef ECB_MEMORY_FENCE
		556	#if ECB_GCC_VERSION(2,5) || defined __INTEL_COMPILER || (__llvm__ && __GNUC__) || __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		557	#if __i386 || __i386__
		558	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		559	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE /* non-lock xchg might be enough */
		560	#define ECB_MEMORY_FENCE_RELEASE do { } while (0) /* unlikely to change in future cpus */
		561	#elif __amd64 || __amd64__ || __x86_64 || __x86_64__
		562	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		563	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
		564	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence") /* play safe - not needed in any current cpu */
		565	#elif __powerpc__ || __ppc__ || __powerpc64__ || __ppc64__
		566	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		567	#elif defined __ARM_ARCH_6__ || defined __ARM_ARCH_6J__ \
		568	|| defined __ARM_ARCH_6K__ || defined __ARM_ARCH_6ZK__
		569	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mcr p15,0,%0,c7,c10,5" : : "r" (0) : "memory")
		570	#elif defined __ARM_ARCH_7__ || defined __ARM_ARCH_7A__ \
		571	|| defined __ARM_ARCH_7M__ || defined __ARM_ARCH_7R__
		572	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("dmb" : : : "memory")
		573	#elif __sparc || __sparc__
		574	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad | #StoreStore | #StoreLoad | " : : : "memory")
		575	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("membar #LoadStore | #LoadLoad" : : : "memory")
		576	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("membar #LoadStore | #StoreStore")
		577	#elif defined __s390__ || defined __s390x__
		578	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("bcr 15,0" : : : "memory")
		579	#elif defined __mips__
		580	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("sync" : : : "memory")
		581	#elif defined __alpha__
		582	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mb" : : : "memory")
		583	#endif
		584	#endif
		585	#endif
		586
		587	#ifndef ECB_MEMORY_FENCE
		588	#if ECB_GCC_VERSION(4,4) || defined __INTEL_COMPILER || defined __clang__
		589	#define ECB_MEMORY_FENCE __sync_synchronize ()
		590	/*#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); }) */
		591	/*#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); }) */
		592	#elif _MSC_VER >= 1400 /* VC++ 2005 */
		593	#pragma intrinsic(_ReadBarrier,_WriteBarrier,_ReadWriteBarrier)
		594	#define ECB_MEMORY_FENCE _ReadWriteBarrier ()
		595	#define ECB_MEMORY_FENCE_ACQUIRE _ReadWriteBarrier () /* according to msdn, _ReadBarrier is not a load fence */
		596	#define ECB_MEMORY_FENCE_RELEASE _WriteBarrier ()
		597	#elif defined _WIN32
		598	#include <WinNT.h>
		599	#define ECB_MEMORY_FENCE MemoryBarrier () /* actually just xchg on x86... scary */
		600	#elif __SUNPRO_C >= 0x5110 || __SUNPRO_CC >= 0x5110
		601	#include <mbarrier.h>
		602	#define ECB_MEMORY_FENCE __machine_rw_barrier ()
		603	#define ECB_MEMORY_FENCE_ACQUIRE __machine_r_barrier ()
		604	#define ECB_MEMORY_FENCE_RELEASE __machine_w_barrier ()
		605	#elif __xlC__
		606	#define ECB_MEMORY_FENCE __sync ()
		607	#endif
		608	#endif
		609
		610	#ifndef ECB_MEMORY_FENCE
		611	#if !ECB_AVOID_PTHREADS
		612	/*
		613	* if you get undefined symbol references to pthread_mutex_lock,
		614	* or failure to find pthread.h, then you should implement
		615	* the ECB_MEMORY_FENCE operations for your cpu/compiler
		616	* OR provide pthread.h and link against the posix thread library
		617	* of your system.
		618	*/
		619	#include <pthread.h>
		620	#define ECB_NEEDS_PTHREADS 1
		621	#define ECB_MEMORY_FENCE_NEEDS_PTHREADS 1
		622
		623	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		624	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		625	#endif
		626	#endif
		627
		628	#if !defined ECB_MEMORY_FENCE_ACQUIRE && defined ECB_MEMORY_FENCE
		629	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		630	#endif
		631
		632	#if !defined ECB_MEMORY_FENCE_RELEASE && defined ECB_MEMORY_FENCE
		633	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		634	#endif
		635
		636	/*****************************************************************************/
		637
		638	#define ECB_C99 (__STDC_VERSION__ >= 199901L)
		639
		640	#if __cplusplus
		641	#define ecb_inline static inline
		642	#elif ECB_GCC_VERSION(2,5)
		643	#define ecb_inline static __inline__
		644	#elif ECB_C99
		645	#define ecb_inline static inline
		646	#else
		647	#define ecb_inline static
		648	#endif
		649
		650	#if ECB_GCC_VERSION(3,3)
		651	#define ecb_restrict __restrict__
		652	#elif ECB_C99
		653	#define ecb_restrict restrict
		654	#else
		655	#define ecb_restrict
		656	#endif
		657
		658	typedef int ecb_bool;
		659
		660	#define ECB_CONCAT_(a, b) a ## b
		661	#define ECB_CONCAT(a, b) ECB_CONCAT_(a, b)
		662	#define ECB_STRINGIFY_(a) # a
		663	#define ECB_STRINGIFY(a) ECB_STRINGIFY_(a)
		664
		665	#define ecb_function_ ecb_inline
		666
		667	#if ECB_GCC_VERSION(3,1)
		668	#define ecb_attribute(attrlist) __attribute__(attrlist)
		669	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		670	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		671	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		672	#else
		673	#define ecb_attribute(attrlist)
		674	#define ecb_is_constant(expr) 0
		675	#define ecb_expect(expr,value) (expr)
		676	#define ecb_prefetch(addr,rw,locality)
		677	#endif
		678
		679	/* no emulation for ecb_decltype */
		680	#if ECB_GCC_VERSION(4,5)
		681	#define ecb_decltype(x) __decltype(x)
		682	#elif ECB_GCC_VERSION(3,0)
		683	#define ecb_decltype(x) __typeof(x)
		684	#endif
		685
		686	#define ecb_noinline ecb_attribute ((__noinline__))
		687	#define ecb_noreturn ecb_attribute ((__noreturn__))
		688	#define ecb_unused ecb_attribute ((__unused__))
		689	#define ecb_const ecb_attribute ((__const__))
		690	#define ecb_pure ecb_attribute ((__pure__))
		691
		692	#if ECB_GCC_VERSION(4,3)
		693	#define ecb_artificial ecb_attribute ((__artificial__))
		694	#define ecb_hot ecb_attribute ((__hot__))
		695	#define ecb_cold ecb_attribute ((__cold__))
		696	#else
		697	#define ecb_artificial
		698	#define ecb_hot
		699	#define ecb_cold
		700	#endif
		701
		702	/* put around conditional expressions if you are very sure that the */
		703	/* expression is mostly true or mostly false. note that these return */
		704	/* booleans, not the expression. */
273	#define expect_false(expr) expect ((expr) != 0, 0)	705	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
274	#define expect_true(expr) expect ((expr) != 0, 1)	706	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		707	/* for compatibility to the rest of the world */
		708	#define ecb_likely(expr) ecb_expect_true (expr)
		709	#define ecb_unlikely(expr) ecb_expect_false (expr)
		710
		711	/* count trailing zero bits and count # of one bits */
		712	#if ECB_GCC_VERSION(3,4)
		713	/* we assume int == 32 bit, long == 32 or 64 bit and long long == 64 bit */
		714	#define ecb_ld32(x) (__builtin_clz (x) ^ 31)
		715	#define ecb_ld64(x) (__builtin_clzll (x) ^ 63)
		716	#define ecb_ctz32(x) __builtin_ctz (x)
		717	#define ecb_ctz64(x) __builtin_ctzll (x)
		718	#define ecb_popcount32(x) __builtin_popcount (x)
		719	/* no popcountll */
		720	#else
		721	ecb_function_ int ecb_ctz32 (uint32_t x) ecb_const;
		722	ecb_function_ int
		723	ecb_ctz32 (uint32_t x)
		724	{
		725	int r = 0;
		726
		727	x &= ~x + 1; /* this isolates the lowest bit */
		728
		729	#if ECB_branchless_on_i386
		730	r += !!(x & 0xaaaaaaaa) << 0;
		731	r += !!(x & 0xcccccccc) << 1;
		732	r += !!(x & 0xf0f0f0f0) << 2;
		733	r += !!(x & 0xff00ff00) << 3;
		734	r += !!(x & 0xffff0000) << 4;
		735	#else
		736	if (x & 0xaaaaaaaa) r += 1;
		737	if (x & 0xcccccccc) r += 2;
		738	if (x & 0xf0f0f0f0) r += 4;
		739	if (x & 0xff00ff00) r += 8;
		740	if (x & 0xffff0000) r += 16;
		741	#endif
		742
		743	return r;
		744	}
		745
		746	ecb_function_ int ecb_ctz64 (uint64_t x) ecb_const;
		747	ecb_function_ int
		748	ecb_ctz64 (uint64_t x)
		749	{
		750	int shift = x & 0xffffffffU ? 0 : 32;
		751	return ecb_ctz32 (x >> shift) + shift;
		752	}
		753
		754	ecb_function_ int ecb_popcount32 (uint32_t x) ecb_const;
		755	ecb_function_ int
		756	ecb_popcount32 (uint32_t x)
		757	{
		758	x -= (x >> 1) & 0x55555555;
		759	x = ((x >> 2) & 0x33333333) + (x & 0x33333333);
		760	x = ((x >> 4) + x) & 0x0f0f0f0f;
		761	x *= 0x01010101;
		762
		763	return x >> 24;
		764	}
		765
		766	ecb_function_ int ecb_ld32 (uint32_t x) ecb_const;
		767	ecb_function_ int ecb_ld32 (uint32_t x)
		768	{
		769	int r = 0;
		770
		771	if (x >> 16) { x >>= 16; r += 16; }
		772	if (x >> 8) { x >>= 8; r += 8; }
		773	if (x >> 4) { x >>= 4; r += 4; }
		774	if (x >> 2) { x >>= 2; r += 2; }
		775	if (x >> 1) { r += 1; }
		776
		777	return r;
		778	}
		779
		780	ecb_function_ int ecb_ld64 (uint64_t x) ecb_const;
		781	ecb_function_ int ecb_ld64 (uint64_t x)
		782	{
		783	int r = 0;
		784
		785	if (x >> 32) { x >>= 32; r += 32; }
		786
		787	return r + ecb_ld32 (x);
		788	}
		789	#endif
		790
		791	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x) ecb_const;
		792	ecb_function_ uint8_t ecb_bitrev8 (uint8_t x)
		793	{
		794	return ( (x * 0x0802U & 0x22110U)
		795	| (x * 0x8020U & 0x88440U)) * 0x10101U >> 16;
		796	}
		797
		798	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x) ecb_const;
		799	ecb_function_ uint16_t ecb_bitrev16 (uint16_t x)
		800	{
		801	x = ((x >> 1) & 0x5555) | ((x & 0x5555) << 1);
		802	x = ((x >> 2) & 0x3333) | ((x & 0x3333) << 2);
		803	x = ((x >> 4) & 0x0f0f) | ((x & 0x0f0f) << 4);
		804	x = ( x >> 8 ) | ( x << 8);
		805
		806	return x;
		807	}
		808
		809	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x) ecb_const;
		810	ecb_function_ uint32_t ecb_bitrev32 (uint32_t x)
		811	{
		812	x = ((x >> 1) & 0x55555555) | ((x & 0x55555555) << 1);
		813	x = ((x >> 2) & 0x33333333) | ((x & 0x33333333) << 2);
		814	x = ((x >> 4) & 0x0f0f0f0f) | ((x & 0x0f0f0f0f) << 4);
		815	x = ((x >> 8) & 0x00ff00ff) | ((x & 0x00ff00ff) << 8);
		816	x = ( x >> 16 ) | ( x << 16);
		817
		818	return x;
		819	}
		820
		821	/* popcount64 is only available on 64 bit cpus as gcc builtin */
		822	/* so for this version we are lazy */
		823	ecb_function_ int ecb_popcount64 (uint64_t x) ecb_const;
		824	ecb_function_ int
		825	ecb_popcount64 (uint64_t x)
		826	{
		827	return ecb_popcount32 (x) + ecb_popcount32 (x >> 32);
		828	}
		829
		830	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) ecb_const;
		831	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) ecb_const;
		832	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) ecb_const;
		833	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) ecb_const;
		834	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) ecb_const;
		835	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) ecb_const;
		836	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) ecb_const;
		837	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) ecb_const;
		838
		839	ecb_inline uint8_t ecb_rotl8 (uint8_t x, unsigned int count) { return (x >> ( 8 - count)) | (x << count); }
		840	ecb_inline uint8_t ecb_rotr8 (uint8_t x, unsigned int count) { return (x << ( 8 - count)) | (x >> count); }
		841	ecb_inline uint16_t ecb_rotl16 (uint16_t x, unsigned int count) { return (x >> (16 - count)) | (x << count); }
		842	ecb_inline uint16_t ecb_rotr16 (uint16_t x, unsigned int count) { return (x << (16 - count)) | (x >> count); }
		843	ecb_inline uint32_t ecb_rotl32 (uint32_t x, unsigned int count) { return (x >> (32 - count)) | (x << count); }
		844	ecb_inline uint32_t ecb_rotr32 (uint32_t x, unsigned int count) { return (x << (32 - count)) | (x >> count); }
		845	ecb_inline uint64_t ecb_rotl64 (uint64_t x, unsigned int count) { return (x >> (64 - count)) | (x << count); }
		846	ecb_inline uint64_t ecb_rotr64 (uint64_t x, unsigned int count) { return (x << (64 - count)) | (x >> count); }
		847
		848	#if ECB_GCC_VERSION(4,3)
		849	#define ecb_bswap16(x) (__builtin_bswap32 (x) >> 16)
		850	#define ecb_bswap32(x) __builtin_bswap32 (x)
		851	#define ecb_bswap64(x) __builtin_bswap64 (x)
		852	#else
		853	ecb_function_ uint16_t ecb_bswap16 (uint16_t x) ecb_const;
		854	ecb_function_ uint16_t
		855	ecb_bswap16 (uint16_t x)
		856	{
		857	return ecb_rotl16 (x, 8);
		858	}
		859
		860	ecb_function_ uint32_t ecb_bswap32 (uint32_t x) ecb_const;
		861	ecb_function_ uint32_t
		862	ecb_bswap32 (uint32_t x)
		863	{
		864	return (((uint32_t)ecb_bswap16 (x)) << 16) | ecb_bswap16 (x >> 16);
		865	}
		866
		867	ecb_function_ uint64_t ecb_bswap64 (uint64_t x) ecb_const;
		868	ecb_function_ uint64_t
		869	ecb_bswap64 (uint64_t x)
		870	{
		871	return (((uint64_t)ecb_bswap32 (x)) << 32) | ecb_bswap32 (x >> 32);
		872	}
		873	#endif
		874
		875	#if ECB_GCC_VERSION(4,5)
		876	#define ecb_unreachable() __builtin_unreachable ()
		877	#else
		878	/* this seems to work fine, but gcc always emits a warning for it :/ */
		879	ecb_inline void ecb_unreachable (void) ecb_noreturn;
		880	ecb_inline void ecb_unreachable (void) { }
		881	#endif
		882
		883	/* try to tell the compiler that some condition is definitely true */
		884	#define ecb_assume(cond) do { if (!(cond)) ecb_unreachable (); } while (0)
		885
		886	ecb_inline unsigned char ecb_byteorder_helper (void) ecb_const;
		887	ecb_inline unsigned char
		888	ecb_byteorder_helper (void)
		889	{
		890	const uint32_t u = 0x11223344;
		891	return *(unsigned char *)&u;
		892	}
		893
		894	ecb_inline ecb_bool ecb_big_endian (void) ecb_const;
		895	ecb_inline ecb_bool ecb_big_endian (void) { return ecb_byteorder_helper () == 0x11; }
		896	ecb_inline ecb_bool ecb_little_endian (void) ecb_const;
		897	ecb_inline ecb_bool ecb_little_endian (void) { return ecb_byteorder_helper () == 0x44; }
		898
		899	#if ECB_GCC_VERSION(3,0) || ECB_C99
		900	#define ecb_mod(m,n) ((m) % (n) + ((m) % (n) < 0 ? (n) : 0))
		901	#else
		902	#define ecb_mod(m,n) ((m) < 0 ? ((n) - 1 - ((-1 - (m)) % (n))) : ((m) % (n)))
		903	#endif
		904
		905	#if __cplusplus
		906	template<typename T>
		907	static inline T ecb_div_rd (T val, T div)
		908	{
		909	return val < 0 ? - ((-val + div - 1) / div) : (val ) / div;
		910	}
		911	template<typename T>
		912	static inline T ecb_div_ru (T val, T div)
		913	{
		914	return val < 0 ? - ((-val ) / div) : (val + div - 1) / div;
		915	}
		916	#else
		917	#define ecb_div_rd(val,div) ((val) < 0 ? - ((-(val) + (div) - 1) / (div)) : ((val) ) / (div))
		918	#define ecb_div_ru(val,div) ((val) < 0 ? - ((-(val) ) / (div)) : ((val) + (div) - 1) / (div))
		919	#endif
		920
		921	#if ecb_cplusplus_does_not_suck
		922	/* does not work for local types (http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm) */
		923	template<typename T, int N>
		924	static inline int ecb_array_length (const T (&arr)[N])
		925	{
		926	return N;
		927	}
		928	#else
		929	#define ecb_array_length(name) (sizeof (name) / sizeof (name [0]))
		930	#endif
		931
		932	#endif
		933
		934	/* ECB.H END */
		935
		936	#if ECB_MEMORY_FENCE_NEEDS_PTHREADS
		937	/* if your architecture doesn't need memory fences, e.g. because it is
		938	* single-cpu/core, or if you use libev in a project that doesn't use libev
		939	* from multiple threads, then you can define ECB_AVOID_PTHREADS when compiling
		940	* libev, in which cases the memory fences become nops.
		941	* alternatively, you can remove this #error and link against libpthread,
		942	* which will then provide the memory fences.
		943	*/
		944	# error "memory fences not defined for your architecture, please report"
		945	#endif
		946
		947	#ifndef ECB_MEMORY_FENCE
		948	# define ECB_MEMORY_FENCE do { } while (0)
		949	# define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		950	# define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		951	#endif
		952
		953	#define expect_false(cond) ecb_expect_false (cond)
		954	#define expect_true(cond) ecb_expect_true (cond)
		955	#define noinline ecb_noinline
		956
275	#define inline_size static inline	957	#define inline_size ecb_inline
276		958
277	#if EV_MINIMAL	959	#if EV_FEATURE_CODE
		960	# define inline_speed ecb_inline
		961	#else
278	# define inline_speed static noinline	962	# define inline_speed static noinline
		963	#endif
		964
		965	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		966
		967	#if EV_MINPRI == EV_MAXPRI
		968	# define ABSPRI(w) (((W)w), 0)
279	#else	969	#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)	970	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		971	#endif
285		972
286	#define EMPTY /* required for microsofts broken pseudo-c compiler */	973	#define EMPTY /* required for microsofts broken pseudo-c compiler */
287	#define EMPTY2(a,b) /* used to suppress some warnings */	974	#define EMPTY2(a,b) /* used to suppress some warnings */
288		975
289	typedef ev_watcher *W;	976	typedef ev_watcher *W;
290	typedef ev_watcher_list *WL;	977	typedef ev_watcher_list *WL;
291	typedef ev_watcher_time *WT;	978	typedef ev_watcher_time *WT;
292		979
		980	#define ev_active(w) ((W)(w))->active
		981	#define ev_at(w) ((WT)(w))->at
		982
		983	#if EV_USE_REALTIME
		984	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		985	/* giving it a reasonably high chance of working on typical architectures */
		986	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		987	#endif
		988
293	#if EV_USE_MONOTONIC	989	#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? */	990	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		991	#endif
		992
		993	#ifndef EV_FD_TO_WIN32_HANDLE
		994	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		995	#endif
		996	#ifndef EV_WIN32_HANDLE_TO_FD
		997	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		998	#endif
		999	#ifndef EV_WIN32_CLOSE_FD
		1000	# define EV_WIN32_CLOSE_FD(fd) close (fd)
297	#endif	1001	#endif
298		1002
299	#ifdef _WIN32	1003	#ifdef _WIN32
300	# include "ev_win32.c"	1004	# include "ev_win32.c"
301	#endif	1005	#endif
302		1006
303	/*****************************************************************************/	1007	/*****************************************************************************/
304		1008
		1009	/* define a suitable floor function (only used by periodics atm) */
		1010
		1011	#if EV_USE_FLOOR
		1012	# include <math.h>
		1013	# define ev_floor(v) floor (v)
		1014	#else
		1015
		1016	#include <float.h>
		1017
		1018	/* a floor() replacement function, should be independent of ev_tstamp type */
		1019	static ev_tstamp noinline
		1020	ev_floor (ev_tstamp v)
		1021	{
		1022	/* the choice of shift factor is not terribly important */
		1023	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		1024	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		1025	#else
		1026	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		1027	#endif
		1028
		1029	/* argument too large for an unsigned long? */
		1030	if (expect_false (v >= shift))
		1031	{
		1032	ev_tstamp f;
		1033
		1034	if (v == v - 1.)
		1035	return v; /* very large number */
		1036
		1037	f = shift * ev_floor (v * (1. / shift));
		1038	return f + ev_floor (v - f);
		1039	}
		1040
		1041	/* special treatment for negative args? */
		1042	if (expect_false (v < 0.))
		1043	{
		1044	ev_tstamp f = -ev_floor (-v);
		1045
		1046	return f - (f == v ? 0 : 1);
		1047	}
		1048
		1049	/* fits into an unsigned long */
		1050	return (unsigned long)v;
		1051	}
		1052
		1053	#endif
		1054
		1055	/*****************************************************************************/
		1056
		1057	#ifdef __linux
		1058	# include <sys/utsname.h>
		1059	#endif
		1060
		1061	static unsigned int noinline ecb_cold
		1062	ev_linux_version (void)
		1063	{
		1064	#ifdef __linux
		1065	unsigned int v = 0;
		1066	struct utsname buf;
		1067	int i;
		1068	char *p = buf.release;
		1069
		1070	if (uname (&buf))
		1071	return 0;
		1072
		1073	for (i = 3+1; --i; )
		1074	{
		1075	unsigned int c = 0;
		1076
		1077	for (;;)
		1078	{
		1079	if (*p >= '0' && *p <= '9')
		1080	c = c * 10 + *p++ - '0';
		1081	else
		1082	{
		1083	p += *p == '.';
		1084	break;
		1085	}
		1086	}
		1087
		1088	v = (v << 8) | c;
		1089	}
		1090
		1091	return v;
		1092	#else
		1093	return 0;
		1094	#endif
		1095	}
		1096
		1097	/*****************************************************************************/
		1098
		1099	#if EV_AVOID_STDIO
		1100	static void noinline ecb_cold
		1101	ev_printerr (const char *msg)
		1102	{
		1103	write (STDERR_FILENO, msg, strlen (msg));
		1104	}
		1105	#endif
		1106
305	static void (*syserr_cb)(const char *msg);	1107	static void (*syserr_cb)(const char *msg) EV_THROW;
306		1108
307	void	1109	void ecb_cold
308	ev_set_syserr_cb (void (*cb)(const char *msg))	1110	ev_set_syserr_cb (void (*cb)(const char *msg)) EV_THROW
309	{	1111	{
310	syserr_cb = cb;	1112	syserr_cb = cb;
311	}	1113	}
312		1114
313	static void noinline	1115	static void noinline ecb_cold
314	syserr (const char *msg)	1116	ev_syserr (const char *msg)
315	{	1117	{
316	if (!msg)	1118	if (!msg)
317	msg = "(libev) system error";	1119	msg = "(libev) system error";
318		1120
319	if (syserr_cb)	1121	if (syserr_cb)
320	syserr_cb (msg);	1122	syserr_cb (msg);
321	else	1123	else
322	{	1124	{
		1125	#if EV_AVOID_STDIO
		1126	ev_printerr (msg);
		1127	ev_printerr (": ");
		1128	ev_printerr (strerror (errno));
		1129	ev_printerr ("\n");
		1130	#else
323	perror (msg);	1131	perror (msg);
		1132	#endif
324	abort ();	1133	abort ();
325	}	1134	}
326	}	1135	}
327		1136
		1137	static void *
		1138	ev_realloc_emul (void *ptr, long size)
		1139	{
		1140	#if __GLIBC__
		1141	return realloc (ptr, size);
		1142	#else
		1143	/* some systems, notably openbsd and darwin, fail to properly
		1144	* implement realloc (x, 0) (as required by both ansi c-89 and
		1145	* the single unix specification, so work around them here.
		1146	*/
		1147
		1148	if (size)
		1149	return realloc (ptr, size);
		1150
		1151	free (ptr);
		1152	return 0;
		1153	#endif
		1154	}
		1155
328	static void *(*alloc)(void *ptr, long size);	1156	static void *(*alloc)(void *ptr, long size) EV_THROW = ev_realloc_emul;
329		1157
330	void	1158	void ecb_cold
331	ev_set_allocator (void *(*cb)(void *ptr, long size))	1159	ev_set_allocator (void *(*cb)(void *ptr, long size)) EV_THROW
332	{	1160	{
333	alloc = cb;	1161	alloc = cb;
334	}	1162	}
335		1163
336	inline_speed void *	1164	inline_speed void *
337	ev_realloc (void *ptr, long size)	1165	ev_realloc (void *ptr, long size)
338	{	1166	{
339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	1167	ptr = alloc (ptr, size);
340		1168
341	if (!ptr && size)	1169	if (!ptr && size)
342	{	1170	{
		1171	#if EV_AVOID_STDIO
		1172	ev_printerr ("(libev) memory allocation failed, aborting.\n");
		1173	#else
343	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	1174	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
		1175	#endif
344	abort ();	1176	abort ();
345	}	1177	}
346		1178
347	return ptr;	1179	return ptr;
348	}	1180	}
…		…
350	#define ev_malloc(size) ev_realloc (0, (size))	1182	#define ev_malloc(size) ev_realloc (0, (size))
351	#define ev_free(ptr) ev_realloc ((ptr), 0)	1183	#define ev_free(ptr) ev_realloc ((ptr), 0)
352		1184
353	/*****************************************************************************/	1185	/*****************************************************************************/
354		1186
		1187	/* set in reify when reification needed */
		1188	#define EV_ANFD_REIFY 1
		1189
		1190	/* file descriptor info structure */
355	typedef struct	1191	typedef struct
356	{	1192	{
357	WL head;	1193	WL head;
358	unsigned char events;	1194	unsigned char events; /* the events watched for */
		1195	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		1196	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359	unsigned char reify;	1197	unsigned char unused;
		1198	#if EV_USE_EPOLL
		1199	unsigned int egen; /* generation counter to counter epoll bugs */
		1200	#endif
360	#if EV_SELECT_IS_WINSOCKET	1201	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
361	SOCKET handle;	1202	SOCKET handle;
362	#endif	1203	#endif
		1204	#if EV_USE_IOCP
		1205	OVERLAPPED or, ow;
		1206	#endif
363	} ANFD;	1207	} ANFD;
364		1208
		1209	/* stores the pending event set for a given watcher */
365	typedef struct	1210	typedef struct
366	{	1211	{
367	W w;	1212	W w;
368	int events;	1213	int events; /* the pending event set for the given watcher */
369	} ANPENDING;	1214	} ANPENDING;
370		1215
371	#if EV_USE_INOTIFY	1216	#if EV_USE_INOTIFY
		1217	/* hash table entry per inotify-id */
372	typedef struct	1218	typedef struct
373	{	1219	{
374	WL head;	1220	WL head;
375	} ANFS;	1221	} ANFS;
		1222	#endif
		1223
		1224	/* Heap Entry */
		1225	#if EV_HEAP_CACHE_AT
		1226	/* a heap element */
		1227	typedef struct {
		1228	ev_tstamp at;
		1229	WT w;
		1230	} ANHE;
		1231
		1232	#define ANHE_w(he) (he).w /* access watcher, read-write */
		1233	#define ANHE_at(he) (he).at /* access cached at, read-only */
		1234	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		1235	#else
		1236	/* a heap element */
		1237	typedef WT ANHE;
		1238
		1239	#define ANHE_w(he) (he)
		1240	#define ANHE_at(he) (he)->at
		1241	#define ANHE_at_cache(he)
376	#endif	1242	#endif
377		1243
378	#if EV_MULTIPLICITY	1244	#if EV_MULTIPLICITY
379		1245
380	struct ev_loop	1246	struct ev_loop
…		…
386	#undef VAR	1252	#undef VAR
387	};	1253	};
388	#include "ev_wrap.h"	1254	#include "ev_wrap.h"
389		1255
390	static struct ev_loop default_loop_struct;	1256	static struct ev_loop default_loop_struct;
391	struct ev_loop *ev_default_loop_ptr;	1257	EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
392		1258
393	#else	1259	#else
394		1260
395	ev_tstamp ev_rt_now;	1261	EV_API_DECL ev_tstamp ev_rt_now = 0; /* needs to be initialised to make it a definition despite extern */
396	#define VAR(name,decl) static decl;	1262	#define VAR(name,decl) static decl;
397	#include "ev_vars.h"	1263	#include "ev_vars.h"
398	#undef VAR	1264	#undef VAR
399		1265
400	static int ev_default_loop_ptr;	1266	static int ev_default_loop_ptr;
401		1267
402	#endif	1268	#endif
403		1269
		1270	#if EV_FEATURE_API
		1271	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		1272	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		1273	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		1274	#else
		1275	# define EV_RELEASE_CB (void)0
		1276	# define EV_ACQUIRE_CB (void)0
		1277	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		1278	#endif
		1279
		1280	#define EVBREAK_RECURSE 0x80
		1281
404	/*****************************************************************************/	1282	/*****************************************************************************/
405		1283
		1284	#ifndef EV_HAVE_EV_TIME
406	ev_tstamp	1285	ev_tstamp
407	ev_time (void)	1286	ev_time (void) EV_THROW
408	{	1287	{
409	#if EV_USE_REALTIME	1288	#if EV_USE_REALTIME
		1289	if (expect_true (have_realtime))
		1290	{
410	struct timespec ts;	1291	struct timespec ts;
411	clock_gettime (CLOCK_REALTIME, &ts);	1292	clock_gettime (CLOCK_REALTIME, &ts);
412	return ts.tv_sec + ts.tv_nsec * 1e-9;	1293	return ts.tv_sec + ts.tv_nsec * 1e-9;
413	#else	1294	}
		1295	#endif
		1296
414	struct timeval tv;	1297	struct timeval tv;
415	gettimeofday (&tv, 0);	1298	gettimeofday (&tv, 0);
416	return tv.tv_sec + tv.tv_usec * 1e-6;	1299	return tv.tv_sec + tv.tv_usec * 1e-6;
417	#endif
418	}	1300	}
		1301	#endif
419		1302
420	ev_tstamp inline_size	1303	inline_size ev_tstamp
421	get_clock (void)	1304	get_clock (void)
422	{	1305	{
423	#if EV_USE_MONOTONIC	1306	#if EV_USE_MONOTONIC
424	if (expect_true (have_monotonic))	1307	if (expect_true (have_monotonic))
425	{	1308	{
…		…
432	return ev_time ();	1315	return ev_time ();
433	}	1316	}
434		1317
435	#if EV_MULTIPLICITY	1318	#if EV_MULTIPLICITY
436	ev_tstamp	1319	ev_tstamp
437	ev_now (EV_P)	1320	ev_now (EV_P) EV_THROW
438	{	1321	{
439	return ev_rt_now;	1322	return ev_rt_now;
440	}	1323	}
441	#endif	1324	#endif
442		1325
443	void	1326	void
444	ev_sleep (ev_tstamp delay)	1327	ev_sleep (ev_tstamp delay) EV_THROW
445	{	1328	{
446	if (delay > 0.)	1329	if (delay > 0.)
447	{	1330	{
448	#if EV_USE_NANOSLEEP	1331	#if EV_USE_NANOSLEEP
449	struct timespec ts;	1332	struct timespec ts;
450		1333
451	ts.tv_sec = (time_t)delay;	1334	EV_TS_SET (ts, delay);
452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454	nanosleep (&ts, 0);	1335	nanosleep (&ts, 0);
455	#elif defined(_WIN32)	1336	#elif defined _WIN32
456	Sleep (delay * 1e3);	1337	Sleep ((unsigned long)(delay * 1e3));
457	#else	1338	#else
458	struct timeval tv;	1339	struct timeval tv;
459		1340
460	tv.tv_sec = (time_t)delay;	1341	/* 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);	1342	/* something not guaranteed by newer posix versions, but guaranteed */
462		1343	/* by older ones */
		1344	EV_TV_SET (tv, delay);
463	select (0, 0, 0, 0, &tv);	1345	select (0, 0, 0, 0, &tv);
464	#endif	1346	#endif
465	}	1347	}
466	}	1348	}
467		1349
468	/*****************************************************************************/	1350	/*****************************************************************************/
469		1351
470	int inline_size	1352	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		1353
		1354	/* find a suitable new size for the given array, */
		1355	/* hopefully by rounding to a nice-to-malloc size */
		1356	inline_size int
471	array_nextsize (int elem, int cur, int cnt)	1357	array_nextsize (int elem, int cur, int cnt)
472	{	1358	{
473	int ncur = cur + 1;	1359	int ncur = cur + 1;
474		1360
475	do	1361	do
476	ncur <<= 1;	1362	ncur <<= 1;
477	while (cnt > ncur);	1363	while (cnt > ncur);
478		1364
479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	1365	/* if size is large, round to MALLOC_ROUND - 4 * longs to accommodate malloc overhead */
480	if (elem * ncur > 4096)	1366	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481	{	1367	{
482	ncur *= elem;	1368	ncur *= elem;
483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	1369	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484	ncur = ncur - sizeof (void *) * 4;	1370	ncur = ncur - sizeof (void *) * 4;
485	ncur /= elem;	1371	ncur /= elem;
486	}	1372	}
487		1373
488	return ncur;	1374	return ncur;
489	}	1375	}
490		1376
491	static noinline void *	1377	static void * noinline ecb_cold
492	array_realloc (int elem, void *base, int *cur, int cnt)	1378	array_realloc (int elem, void *base, int *cur, int cnt)
493	{	1379	{
494	*cur = array_nextsize (elem, *cur, cnt);	1380	*cur = array_nextsize (elem, *cur, cnt);
495	return ev_realloc (base, elem * *cur);	1381	return ev_realloc (base, elem * *cur);
496	}	1382	}
		1383
		1384	#define array_init_zero(base,count) \
		1385	memset ((void *)(base), 0, sizeof (*(base)) * (count))
497		1386
498	#define array_needsize(type,base,cur,cnt,init) \	1387	#define array_needsize(type,base,cur,cnt,init) \
499	if (expect_false ((cnt) > (cur))) \	1388	if (expect_false ((cnt) > (cur))) \
500	{ \	1389	{ \
501	int ocur_ = (cur); \	1390	int ecb_unused ocur_ = (cur); \
502	(base) = (type *)array_realloc \	1391	(base) = (type *)array_realloc \
503	(sizeof (type), (base), &(cur), (cnt)); \	1392	(sizeof (type), (base), &(cur), (cnt)); \
504	init ((base) + (ocur_), (cur) - ocur_); \	1393	init ((base) + (ocur_), (cur) - ocur_); \
505	}	1394	}
506		1395
…		…
513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	1402	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514	}	1403	}
515	#endif	1404	#endif
516		1405
517	#define array_free(stem, idx) \	1406	#define array_free(stem, idx) \
518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	1407	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519		1408
520	/*****************************************************************************/	1409	/*****************************************************************************/
521		1410
		1411	/* dummy callback for pending events */
		1412	static void noinline
		1413	pendingcb (EV_P_ ev_prepare *w, int revents)
		1414	{
		1415	}
		1416
522	void noinline	1417	void noinline
523	ev_feed_event (EV_P_ void *w, int revents)	1418	ev_feed_event (EV_P_ void *w, int revents) EV_THROW
524	{	1419	{
525	W w_ = (W)w;	1420	W w_ = (W)w;
526	int pri = ABSPRI (w_);	1421	int pri = ABSPRI (w_);
527		1422
528	if (expect_false (w_->pending))	1423	if (expect_false (w_->pending))
…		…
532	w_->pending = ++pendingcnt [pri];	1427	w_->pending = ++pendingcnt [pri];
533	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);	1428	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
534	pendings [pri][w_->pending - 1].w = w_;	1429	pendings [pri][w_->pending - 1].w = w_;
535	pendings [pri][w_->pending - 1].events = revents;	1430	pendings [pri][w_->pending - 1].events = revents;
536	}	1431	}
537	}
538		1432
539	void inline_speed	1433	pendingpri = NUMPRI - 1;
		1434	}
		1435
		1436	inline_speed void
		1437	feed_reverse (EV_P_ W w)
		1438	{
		1439	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		1440	rfeeds [rfeedcnt++] = w;
		1441	}
		1442
		1443	inline_size void
		1444	feed_reverse_done (EV_P_ int revents)
		1445	{
		1446	do
		1447	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		1448	while (rfeedcnt);
		1449	}
		1450
		1451	inline_speed void
540	queue_events (EV_P_ W *events, int eventcnt, int type)	1452	queue_events (EV_P_ W *events, int eventcnt, int type)
541	{	1453	{
542	int i;	1454	int i;
543		1455
544	for (i = 0; i < eventcnt; ++i)	1456	for (i = 0; i < eventcnt; ++i)
545	ev_feed_event (EV_A_ events [i], type);	1457	ev_feed_event (EV_A_ events [i], type);
546	}	1458	}
547		1459
548	/*****************************************************************************/	1460	/*****************************************************************************/
549		1461
550	void inline_size	1462	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)	1463	fd_event_nocheck (EV_P_ int fd, int revents)
565	{	1464	{
566	ANFD *anfd = anfds + fd;	1465	ANFD *anfd = anfds + fd;
567	ev_io *w;	1466	ev_io *w;
568		1467
569	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1468	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
573	if (ev)	1472	if (ev)
574	ev_feed_event (EV_A_ (W)w, ev);	1473	ev_feed_event (EV_A_ (W)w, ev);
575	}	1474	}
576	}	1475	}
577		1476
		1477	/* do not submit kernel events for fds that have reify set */
		1478	/* because that means they changed while we were polling for new events */
		1479	inline_speed void
		1480	fd_event (EV_P_ int fd, int revents)
		1481	{
		1482	ANFD *anfd = anfds + fd;
		1483
		1484	if (expect_true (!anfd->reify))
		1485	fd_event_nocheck (EV_A_ fd, revents);
		1486	}
		1487
578	void	1488	void
579	ev_feed_fd_event (EV_P_ int fd, int revents)	1489	ev_feed_fd_event (EV_P_ int fd, int revents) EV_THROW
580	{	1490	{
581	if (fd >= 0 && fd < anfdmax)	1491	if (fd >= 0 && fd < anfdmax)
582	fd_event (EV_A_ fd, revents);	1492	fd_event_nocheck (EV_A_ fd, revents);
583	}	1493	}
584		1494
585	void inline_size	1495	/* make sure the external fd watch events are in-sync */
		1496	/* with the kernel/libev internal state */
		1497	inline_size void
586	fd_reify (EV_P)	1498	fd_reify (EV_P)
587	{	1499	{
588	int i;	1500	int i;
		1501
		1502	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		1503	for (i = 0; i < fdchangecnt; ++i)
		1504	{
		1505	int fd = fdchanges [i];
		1506	ANFD *anfd = anfds + fd;
		1507
		1508	if (anfd->reify & EV__IOFDSET && anfd->head)
		1509	{
		1510	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1511
		1512	if (handle != anfd->handle)
		1513	{
		1514	unsigned long arg;
		1515
		1516	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1517
		1518	/* handle changed, but fd didn't - we need to do it in two steps */
		1519	backend_modify (EV_A_ fd, anfd->events, 0);
		1520	anfd->events = 0;
		1521	anfd->handle = handle;
		1522	}
		1523	}
		1524	}
		1525	#endif
589		1526
590	for (i = 0; i < fdchangecnt; ++i)	1527	for (i = 0; i < fdchangecnt; ++i)
591	{	1528	{
592	int fd = fdchanges [i];	1529	int fd = fdchanges [i];
593	ANFD *anfd = anfds + fd;	1530	ANFD *anfd = anfds + fd;
594	ev_io *w;	1531	ev_io *w;
595		1532
596	unsigned char events = 0;	1533	unsigned char o_events = anfd->events;
		1534	unsigned char o_reify = anfd->reify;
597		1535
598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1536	anfd->reify = 0;
599	events |= (unsigned char)w->events;
600		1537
601	#if EV_SELECT_IS_WINSOCKET	1538	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
602	if (events)
603	{	1539	{
604	unsigned long argp;	1540	anfd->events = 0;
605	#ifdef EV_FD_TO_WIN32_HANDLE	1541
606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1542	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
607	#else	1543	anfd->events |= (unsigned char)w->events;
608	anfd->handle = _get_osfhandle (fd);	1544
609	#endif	1545	if (o_events != anfd->events)
610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	1546	o_reify = EV__IOFDSET; /* actually |= */
611	}	1547	}
612	#endif
613		1548
614	{	1549	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);	1550	backend_modify (EV_A_ fd, o_events, anfd->events);
623	}
624	}	1551	}
625		1552
626	fdchangecnt = 0;	1553	fdchangecnt = 0;
627	}	1554	}
628		1555
629	void inline_size	1556	/* something about the given fd changed */
		1557	inline_size void
630	fd_change (EV_P_ int fd, int flags)	1558	fd_change (EV_P_ int fd, int flags)
631	{	1559	{
632	unsigned char reify = anfds [fd].reify;	1560	unsigned char reify = anfds [fd].reify;
633	anfds [fd].reify |= flags;	1561	anfds [fd].reify |= flags;
634		1562
…		…
638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	1566	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639	fdchanges [fdchangecnt - 1] = fd;	1567	fdchanges [fdchangecnt - 1] = fd;
640	}	1568	}
641	}	1569	}
642		1570
643	void inline_speed	1571	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		1572	inline_speed void ecb_cold
644	fd_kill (EV_P_ int fd)	1573	fd_kill (EV_P_ int fd)
645	{	1574	{
646	ev_io *w;	1575	ev_io *w;
647		1576
648	while ((w = (ev_io *)anfds [fd].head))	1577	while ((w = (ev_io *)anfds [fd].head))
…		…
650	ev_io_stop (EV_A_ w);	1579	ev_io_stop (EV_A_ w);
651	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1580	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652	}	1581	}
653	}	1582	}
654		1583
655	int inline_size	1584	/* check whether the given fd is actually valid, for error recovery */
		1585	inline_size int ecb_cold
656	fd_valid (int fd)	1586	fd_valid (int fd)
657	{	1587	{
658	#ifdef _WIN32	1588	#ifdef _WIN32
659	return _get_osfhandle (fd) != -1;	1589	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660	#else	1590	#else
661	return fcntl (fd, F_GETFD) != -1;	1591	return fcntl (fd, F_GETFD) != -1;
662	#endif	1592	#endif
663	}	1593	}
664		1594
665	/* called on EBADF to verify fds */	1595	/* called on EBADF to verify fds */
666	static void noinline	1596	static void noinline ecb_cold
667	fd_ebadf (EV_P)	1597	fd_ebadf (EV_P)
668	{	1598	{
669	int fd;	1599	int fd;
670		1600
671	for (fd = 0; fd < anfdmax; ++fd)	1601	for (fd = 0; fd < anfdmax; ++fd)
672	if (anfds [fd].events)	1602	if (anfds [fd].events)
673	if (!fd_valid (fd) == -1 && errno == EBADF)	1603	if (!fd_valid (fd) && errno == EBADF)
674	fd_kill (EV_A_ fd);	1604	fd_kill (EV_A_ fd);
675	}	1605	}
676		1606
677	/* called on ENOMEM in select/poll to kill some fds and retry */	1607	/* called on ENOMEM in select/poll to kill some fds and retry */
678	static void noinline	1608	static void noinline ecb_cold
679	fd_enomem (EV_P)	1609	fd_enomem (EV_P)
680	{	1610	{
681	int fd;	1611	int fd;
682		1612
683	for (fd = anfdmax; fd--; )	1613	for (fd = anfdmax; fd--; )
684	if (anfds [fd].events)	1614	if (anfds [fd].events)
685	{	1615	{
686	fd_kill (EV_A_ fd);	1616	fd_kill (EV_A_ fd);
687	return;	1617	break;
688	}	1618	}
689	}	1619	}
690		1620
691	/* usually called after fork if backend needs to re-arm all fds from scratch */	1621	/* usually called after fork if backend needs to re-arm all fds from scratch */
692	static void noinline	1622	static void noinline
…		…
696		1626
697	for (fd = 0; fd < anfdmax; ++fd)	1627	for (fd = 0; fd < anfdmax; ++fd)
698	if (anfds [fd].events)	1628	if (anfds [fd].events)
699	{	1629	{
700	anfds [fd].events = 0;	1630	anfds [fd].events = 0;
		1631	anfds [fd].emask = 0;
701	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1632	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702	}	1633	}
703	}	1634	}
704		1635
705	/*****************************************************************************/	1636	/* used to prepare libev internal fd's */
706		1637	/* this is not fork-safe */
707	void inline_speed	1638	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)	1639	fd_intern (int fd)
792	{	1640	{
793	#ifdef _WIN32	1641	#ifdef _WIN32
794	int arg = 1;	1642	unsigned long arg = 1;
795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1643	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
796	#else	1644	#else
797	fcntl (fd, F_SETFD, FD_CLOEXEC);	1645	fcntl (fd, F_SETFD, FD_CLOEXEC);
798	fcntl (fd, F_SETFL, O_NONBLOCK);	1646	fcntl (fd, F_SETFL, O_NONBLOCK);
799	#endif	1647	#endif
800	}	1648	}
801		1649
		1650	/*****************************************************************************/
		1651
		1652	/*
		1653	* the heap functions want a real array index. array index 0 is guaranteed to not
		1654	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		1655	* the branching factor of the d-tree.
		1656	*/
		1657
		1658	/*
		1659	* at the moment we allow libev the luxury of two heaps,
		1660	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1661	* which is more cache-efficient.
		1662	* the difference is about 5% with 50000+ watchers.
		1663	*/
		1664	#if EV_USE_4HEAP
		1665
		1666	#define DHEAP 4
		1667	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1668	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1669	#define UPHEAP_DONE(p,k) ((p) == (k))
		1670
		1671	/* away from the root */
		1672	inline_speed void
		1673	downheap (ANHE *heap, int N, int k)
		1674	{
		1675	ANHE he = heap [k];
		1676	ANHE *E = heap + N + HEAP0;
		1677
		1678	for (;;)
		1679	{
		1680	ev_tstamp minat;
		1681	ANHE *minpos;
		1682	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1683
		1684	/* find minimum child */
		1685	if (expect_true (pos + DHEAP - 1 < E))
		1686	{
		1687	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1688	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1689	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1690	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1691	}
		1692	else if (pos < E)
		1693	{
		1694	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1695	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1696	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1697	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1698	}
		1699	else
		1700	break;
		1701
		1702	if (ANHE_at (he) <= minat)
		1703	break;
		1704
		1705	heap [k] = *minpos;
		1706	ev_active (ANHE_w (*minpos)) = k;
		1707
		1708	k = minpos - heap;
		1709	}
		1710
		1711	heap [k] = he;
		1712	ev_active (ANHE_w (he)) = k;
		1713	}
		1714
		1715	#else /* 4HEAP */
		1716
		1717	#define HEAP0 1
		1718	#define HPARENT(k) ((k) >> 1)
		1719	#define UPHEAP_DONE(p,k) (!(p))
		1720
		1721	/* away from the root */
		1722	inline_speed void
		1723	downheap (ANHE *heap, int N, int k)
		1724	{
		1725	ANHE he = heap [k];
		1726
		1727	for (;;)
		1728	{
		1729	int c = k << 1;
		1730
		1731	if (c >= N + HEAP0)
		1732	break;
		1733
		1734	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1735	? 1 : 0;
		1736
		1737	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1738	break;
		1739
		1740	heap [k] = heap [c];
		1741	ev_active (ANHE_w (heap [k])) = k;
		1742
		1743	k = c;
		1744	}
		1745
		1746	heap [k] = he;
		1747	ev_active (ANHE_w (he)) = k;
		1748	}
		1749	#endif
		1750
		1751	/* towards the root */
		1752	inline_speed void
		1753	upheap (ANHE *heap, int k)
		1754	{
		1755	ANHE he = heap [k];
		1756
		1757	for (;;)
		1758	{
		1759	int p = HPARENT (k);
		1760
		1761	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1762	break;
		1763
		1764	heap [k] = heap [p];
		1765	ev_active (ANHE_w (heap [k])) = k;
		1766	k = p;
		1767	}
		1768
		1769	heap [k] = he;
		1770	ev_active (ANHE_w (he)) = k;
		1771	}
		1772
		1773	/* move an element suitably so it is in a correct place */
		1774	inline_size void
		1775	adjustheap (ANHE *heap, int N, int k)
		1776	{
		1777	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
		1778	upheap (heap, k);
		1779	else
		1780	downheap (heap, N, k);
		1781	}
		1782
		1783	/* rebuild the heap: this function is used only once and executed rarely */
		1784	inline_size void
		1785	reheap (ANHE *heap, int N)
		1786	{
		1787	int i;
		1788
		1789	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1790	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1791	for (i = 0; i < N; ++i)
		1792	upheap (heap, i + HEAP0);
		1793	}
		1794
		1795	/*****************************************************************************/
		1796
		1797	/* associate signal watchers to a signal signal */
		1798	typedef struct
		1799	{
		1800	EV_ATOMIC_T pending;
		1801	#if EV_MULTIPLICITY
		1802	EV_P;
		1803	#endif
		1804	WL head;
		1805	} ANSIG;
		1806
		1807	static ANSIG signals [EV_NSIG - 1];
		1808
		1809	/*****************************************************************************/
		1810
		1811	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
		1812
802	static void noinline	1813	static void noinline ecb_cold
803	evpipe_init (EV_P)	1814	evpipe_init (EV_P)
804	{	1815	{
805	if (!ev_is_active (&pipeev))	1816	if (!ev_is_active (&pipe_w))
806	{	1817	{
		1818	# if EV_USE_EVENTFD
		1819	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1820	if (evfd < 0 && errno == EINVAL)
		1821	evfd = eventfd (0, 0);
		1822
		1823	if (evfd >= 0)
		1824	{
		1825	evpipe [0] = -1;
		1826	fd_intern (evfd); /* doing it twice doesn't hurt */
		1827	ev_io_set (&pipe_w, evfd, EV_READ);
		1828	}
		1829	else
		1830	# endif
		1831	{
807	while (pipe (evpipe))	1832	while (pipe (evpipe))
808	syserr ("(libev) error creating signal/async pipe");	1833	ev_syserr ("(libev) error creating signal/async pipe");
809		1834
810	fd_intern (evpipe [0]);	1835	fd_intern (evpipe [0]);
811	fd_intern (evpipe [1]);	1836	fd_intern (evpipe [1]);
812
813	ev_io_set (&pipeev, evpipe [0], EV_READ);	1837	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1838	}
		1839
814	ev_io_start (EV_A_ &pipeev);	1840	ev_io_start (EV_A_ &pipe_w);
815	ev_unref (EV_A); /* watcher should not keep loop alive */	1841	ev_unref (EV_A); /* watcher should not keep loop alive */
816	}	1842	}
817	}	1843	}
818		1844
819	void inline_size	1845	inline_speed void
820	evpipe_write (EV_P_ int sig, int async)	1846	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821	{	1847	{
822	if (!(gotasync || gotsig))	1848	ECB_MEMORY_FENCE; /* push out the write before this function was called, acquire flag */
		1849
		1850	if (expect_true (*flag))
		1851	return;
		1852
		1853	*flag = 1;
		1854
		1855	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		1856
		1857	pipe_write_skipped = 1;
		1858
		1859	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		1860
		1861	if (pipe_write_wanted)
823	{	1862	{
		1863	int old_errno;
		1864
		1865	pipe_write_skipped = 0; /* just an optimisation, no fence needed */
		1866
824	int old_errno = errno; /* save errno becaue write might clobber it */	1867	old_errno = errno; /* save errno because write will clobber it */
825		1868
826	if (sig) gotsig = 1;	1869	#if EV_USE_EVENTFD
827	if (async) gotasync = 1;	1870	if (evfd >= 0)
828		1871	{
829	write (evpipe [1], &old_errno, 1);	1872	uint64_t counter = 1;
		1873	write (evfd, &counter, sizeof (uint64_t));
		1874	}
		1875	else
		1876	#endif
		1877	{
		1878	#ifdef _WIN32
		1879	WSABUF buf;
		1880	DWORD sent;
		1881	buf.buf = &buf;
		1882	buf.len = 1;
		1883	WSASend (EV_FD_TO_WIN32_HANDLE (evpipe [1]), &buf, 1, &sent, 0, 0, 0);
		1884	#else
		1885	write (evpipe [1], &(evpipe [1]), 1);
		1886	#endif
		1887	}
830		1888
831	errno = old_errno;	1889	errno = old_errno;
832	}	1890	}
833	}	1891	}
834		1892
		1893	/* called whenever the libev signal pipe */
		1894	/* got some events (signal, async) */
835	static void	1895	static void
836	pipecb (EV_P_ ev_io *iow, int revents)	1896	pipecb (EV_P_ ev_io *iow, int revents)
837	{	1897	{
		1898	int i;
		1899
		1900	if (revents & EV_READ)
838	{	1901	{
839	int dummy;	1902	#if EV_USE_EVENTFD
		1903	if (evfd >= 0)
		1904	{
		1905	uint64_t counter;
		1906	read (evfd, &counter, sizeof (uint64_t));
		1907	}
		1908	else
		1909	#endif
		1910	{
		1911	char dummy[4];
		1912	#ifdef _WIN32
		1913	WSABUF buf;
		1914	DWORD recvd;
		1915	DWORD flags = 0;
		1916	buf.buf = dummy;
		1917	buf.len = sizeof (dummy);
		1918	WSARecv (EV_FD_TO_WIN32_HANDLE (evpipe [0]), &buf, 1, &recvd, &flags, 0, 0);
		1919	#else
840	read (evpipe [0], &dummy, 1);	1920	read (evpipe [0], &dummy, sizeof (dummy));
		1921	#endif
		1922	}
841	}	1923	}
842		1924
843	if (gotsig)	1925	pipe_write_skipped = 0;
844	{
845	int signum;
846	gotsig = 0;
847		1926
848	for (signum = signalmax; signum--; )	1927	ECB_MEMORY_FENCE; /* push out skipped, acquire flags */
849	if (signals [signum].gotsig)	1928
		1929	#if EV_SIGNAL_ENABLE
		1930	if (sig_pending)
		1931	{
		1932	sig_pending = 0;
		1933
		1934	ECB_MEMORY_FENCE_RELEASE;
		1935
		1936	for (i = EV_NSIG - 1; i--; )
		1937	if (expect_false (signals [i].pending))
850	ev_feed_signal_event (EV_A_ signum + 1);	1938	ev_feed_signal_event (EV_A_ i + 1);
851	}	1939	}
		1940	#endif
852		1941
853	#if EV_ASYNC_ENABLE	1942	#if EV_ASYNC_ENABLE
854	if (gotasync)	1943	if (async_pending)
855	{	1944	{
856	int i;	1945	async_pending = 0;
857	gotasync = 0;	1946
		1947	ECB_MEMORY_FENCE_RELEASE;
858		1948
859	for (i = asynccnt; i--; )	1949	for (i = asynccnt; i--; )
860	if (asyncs [i]->sent)	1950	if (asyncs [i]->sent)
861	{	1951	{
862	asyncs [i]->sent = 0;	1952	asyncs [i]->sent = 0;
…		…
866	#endif	1956	#endif
867	}	1957	}
868		1958
869	/*****************************************************************************/	1959	/*****************************************************************************/
870		1960
		1961	void
		1962	ev_feed_signal (int signum) EV_THROW
		1963	{
		1964	#if EV_MULTIPLICITY
		1965	EV_P = signals [signum - 1].loop;
		1966
		1967	if (!EV_A)
		1968	return;
		1969	#endif
		1970
		1971	if (!ev_active (&pipe_w))
		1972	return;
		1973
		1974	signals [signum - 1].pending = 1;
		1975	evpipe_write (EV_A_ &sig_pending);
		1976	}
		1977
871	static void	1978	static void
872	sighandler (int signum)	1979	ev_sighandler (int signum)
873	{	1980	{
		1981	#ifdef _WIN32
		1982	signal (signum, ev_sighandler);
		1983	#endif
		1984
		1985	ev_feed_signal (signum);
		1986	}
		1987
		1988	void noinline
		1989	ev_feed_signal_event (EV_P_ int signum) EV_THROW
		1990	{
		1991	WL w;
		1992
		1993	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1994	return;
		1995
		1996	--signum;
		1997
874	#if EV_MULTIPLICITY	1998	#if EV_MULTIPLICITY
875	struct ev_loop *loop = &default_loop_struct;	1999	/* it is permissible to try to feed a signal to the wrong loop */
876	#endif	2000	/* or, likely more useful, feeding a signal nobody is waiting for */
877		2001
878	#if _WIN32	2002	if (expect_false (signals [signum].loop != EV_A))
879	signal (signum, sighandler);
880	#endif
881
882	signals [signum - 1].gotsig = 1;
883	evpipe_write (EV_A_ 1, 0);
884	}
885
886	void noinline
887	ev_feed_signal_event (EV_P_ int signum)
888	{
889	WL w;
890
891	#if EV_MULTIPLICITY
892	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
893	#endif
894
895	--signum;
896
897	if (signum < 0 || signum >= signalmax)
898	return;	2003	return;
		2004	#endif
899		2005
900	signals [signum].gotsig = 0;	2006	signals [signum].pending = 0;
901		2007
902	for (w = signals [signum].head; w; w = w->next)	2008	for (w = signals [signum].head; w; w = w->next)
903	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	2009	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
904	}	2010	}
905		2011
		2012	#if EV_USE_SIGNALFD
		2013	static void
		2014	sigfdcb (EV_P_ ev_io *iow, int revents)
		2015	{
		2016	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		2017
		2018	for (;;)
		2019	{
		2020	ssize_t res = read (sigfd, si, sizeof (si));
		2021
		2022	/* not ISO-C, as res might be -1, but works with SuS */
		2023	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		2024	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		2025
		2026	if (res < (ssize_t)sizeof (si))
		2027	break;
		2028	}
		2029	}
		2030	#endif
		2031
		2032	#endif
		2033
906	/*****************************************************************************/	2034	/*****************************************************************************/
907		2035
		2036	#if EV_CHILD_ENABLE
908	static WL childs [EV_PID_HASHSIZE];	2037	static WL childs [EV_PID_HASHSIZE];
909
910	#ifndef _WIN32
911		2038
912	static ev_signal childev;	2039	static ev_signal childev;
913		2040
914	#ifndef WIFCONTINUED	2041	#ifndef WIFCONTINUED
915	# define WIFCONTINUED(status) 0	2042	# define WIFCONTINUED(status) 0
916	#endif	2043	#endif
917		2044
918	void inline_speed	2045	/* handle a single child status event */
		2046	inline_speed void
919	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	2047	child_reap (EV_P_ int chain, int pid, int status)
920	{	2048	{
921	ev_child *w;	2049	ev_child *w;
922	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	2050	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
923		2051
924	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	2052	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
925	{	2053	{
926	if ((w->pid == pid || !w->pid)	2054	if ((w->pid == pid || !w->pid)
927	&& (!traced || (w->flags & 1)))	2055	&& (!traced || (w->flags & 1)))
928	{	2056	{
929	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	2057	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
930	w->rpid = pid;	2058	w->rpid = pid;
931	w->rstatus = status;	2059	w->rstatus = status;
932	ev_feed_event (EV_A_ (W)w, EV_CHILD);	2060	ev_feed_event (EV_A_ (W)w, EV_CHILD);
933	}	2061	}
934	}	2062	}
…		…
936		2064
937	#ifndef WCONTINUED	2065	#ifndef WCONTINUED
938	# define WCONTINUED 0	2066	# define WCONTINUED 0
939	#endif	2067	#endif
940		2068
		2069	/* called on sigchld etc., calls waitpid */
941	static void	2070	static void
942	childcb (EV_P_ ev_signal *sw, int revents)	2071	childcb (EV_P_ ev_signal *sw, int revents)
943	{	2072	{
944	int pid, status;	2073	int pid, status;
945		2074
…		…
948	if (!WCONTINUED	2077	if (!WCONTINUED
949	|| errno != EINVAL	2078	|| errno != EINVAL
950	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	2079	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
951	return;	2080	return;
952		2081
953	/* make sure we are called again until all childs have been reaped */	2082	/* make sure we are called again until all children have been reaped */
954	/* we need to do it this way so that the callback gets called before we continue */	2083	/* we need to do it this way so that the callback gets called before we continue */
955	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);	2084	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
956		2085
957	child_reap (EV_A_ sw, pid, pid, status);	2086	child_reap (EV_A_ pid, pid, status);
958	if (EV_PID_HASHSIZE > 1)	2087	if ((EV_PID_HASHSIZE) > 1)
959	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */	2088	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
960	}	2089	}
961		2090
962	#endif	2091	#endif
963		2092
964	/*****************************************************************************/	2093	/*****************************************************************************/
965		2094
		2095	#if EV_USE_IOCP
		2096	# include "ev_iocp.c"
		2097	#endif
966	#if EV_USE_PORT	2098	#if EV_USE_PORT
967	# include "ev_port.c"	2099	# include "ev_port.c"
968	#endif	2100	#endif
969	#if EV_USE_KQUEUE	2101	#if EV_USE_KQUEUE
970	# include "ev_kqueue.c"	2102	# include "ev_kqueue.c"
…		…
977	#endif	2109	#endif
978	#if EV_USE_SELECT	2110	#if EV_USE_SELECT
979	# include "ev_select.c"	2111	# include "ev_select.c"
980	#endif	2112	#endif
981		2113
982	int	2114	int ecb_cold
983	ev_version_major (void)	2115	ev_version_major (void) EV_THROW
984	{	2116	{
985	return EV_VERSION_MAJOR;	2117	return EV_VERSION_MAJOR;
986	}	2118	}
987		2119
988	int	2120	int ecb_cold
989	ev_version_minor (void)	2121	ev_version_minor (void) EV_THROW
990	{	2122	{
991	return EV_VERSION_MINOR;	2123	return EV_VERSION_MINOR;
992	}	2124	}
993		2125
994	/* return true if we are running with elevated privileges and should ignore env variables */	2126	/* return true if we are running with elevated privileges and should ignore env variables */
995	int inline_size	2127	int inline_size ecb_cold
996	enable_secure (void)	2128	enable_secure (void)
997	{	2129	{
998	#ifdef _WIN32	2130	#ifdef _WIN32
999	return 0;	2131	return 0;
1000	#else	2132	#else
1001	return getuid () != geteuid ()	2133	return getuid () != geteuid ()
1002	|| getgid () != getegid ();	2134	|| getgid () != getegid ();
1003	#endif	2135	#endif
1004	}	2136	}
1005		2137
1006	unsigned int	2138	unsigned int ecb_cold
1007	ev_supported_backends (void)	2139	ev_supported_backends (void) EV_THROW
1008	{	2140	{
1009	unsigned int flags = 0;	2141	unsigned int flags = 0;
1010		2142
1011	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	2143	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
1012	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;	2144	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
…		…
1015	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	2147	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1016		2148
1017	return flags;	2149	return flags;
1018	}	2150	}
1019		2151
1020	unsigned int	2152	unsigned int ecb_cold
1021	ev_recommended_backends (void)	2153	ev_recommended_backends (void) EV_THROW
1022	{	2154	{
1023	unsigned int flags = ev_supported_backends ();	2155	unsigned int flags = ev_supported_backends ();
1024		2156
1025	#ifndef __NetBSD__	2157	#ifndef __NetBSD__
1026	/* kqueue is borked on everything but netbsd apparently */	2158	/* kqueue is borked on everything but netbsd apparently */
1027	/* it usually doesn't work correctly on anything but sockets and pipes */	2159	/* it usually doesn't work correctly on anything but sockets and pipes */
1028	flags &= ~EVBACKEND_KQUEUE;	2160	flags &= ~EVBACKEND_KQUEUE;
1029	#endif	2161	#endif
1030	#ifdef __APPLE__	2162	#ifdef __APPLE__
1031	// flags &= ~EVBACKEND_KQUEUE; for documentation	2163	/* only select works correctly on that "unix-certified" platform */
1032	flags &= ~EVBACKEND_POLL;	2164	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		2165	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		2166	#endif
		2167	#ifdef __FreeBSD__
		2168	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1033	#endif	2169	#endif
1034		2170
1035	return flags;	2171	return flags;
1036	}	2172	}
1037		2173
		2174	unsigned int ecb_cold
		2175	ev_embeddable_backends (void) EV_THROW
		2176	{
		2177	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		2178
		2179	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		2180	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
		2181	flags &= ~EVBACKEND_EPOLL;
		2182
		2183	return flags;
		2184	}
		2185
1038	unsigned int	2186	unsigned int
1039	ev_embeddable_backends (void)	2187	ev_backend (EV_P) EV_THROW
1040	{	2188	{
1041	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	2189	return backend;
1042
1043	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
1044	/* please fix it and tell me how to detect the fix */
1045	flags &= ~EVBACKEND_EPOLL;
1046
1047	return flags;
1048	}	2190	}
1049		2191
		2192	#if EV_FEATURE_API
1050	unsigned int	2193	unsigned int
1051	ev_backend (EV_P)	2194	ev_iteration (EV_P) EV_THROW
1052	{	2195	{
1053	return backend;	2196	return loop_count;
1054	}	2197	}
1055		2198
1056	unsigned int	2199	unsigned int
1057	ev_loop_count (EV_P)	2200	ev_depth (EV_P) EV_THROW
1058	{	2201	{
1059	return loop_count;	2202	return loop_depth;
1060	}	2203	}
1061		2204
1062	void	2205	void
1063	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	2206	ev_set_io_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1064	{	2207	{
1065	io_blocktime = interval;	2208	io_blocktime = interval;
1066	}	2209	}
1067		2210
1068	void	2211	void
1069	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	2212	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval) EV_THROW
1070	{	2213	{
1071	timeout_blocktime = interval;	2214	timeout_blocktime = interval;
1072	}	2215	}
1073		2216
		2217	void
		2218	ev_set_userdata (EV_P_ void *data) EV_THROW
		2219	{
		2220	userdata = data;
		2221	}
		2222
		2223	void *
		2224	ev_userdata (EV_P) EV_THROW
		2225	{
		2226	return userdata;
		2227	}
		2228
		2229	void
		2230	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P)) EV_THROW
		2231	{
		2232	invoke_cb = invoke_pending_cb;
		2233	}
		2234
		2235	void
		2236	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P) EV_THROW, void (*acquire)(EV_P) EV_THROW) EV_THROW
		2237	{
		2238	release_cb = release;
		2239	acquire_cb = acquire;
		2240	}
		2241	#endif
		2242
		2243	/* initialise a loop structure, must be zero-initialised */
1074	static void noinline	2244	static void noinline ecb_cold
1075	loop_init (EV_P_ unsigned int flags)	2245	loop_init (EV_P_ unsigned int flags) EV_THROW
1076	{	2246	{
1077	if (!backend)	2247	if (!backend)
1078	{	2248	{
		2249	origflags = flags;
		2250
		2251	#if EV_USE_REALTIME
		2252	if (!have_realtime)
		2253	{
		2254	struct timespec ts;
		2255
		2256	if (!clock_gettime (CLOCK_REALTIME, &ts))
		2257	have_realtime = 1;
		2258	}
		2259	#endif
		2260
1079	#if EV_USE_MONOTONIC	2261	#if EV_USE_MONOTONIC
		2262	if (!have_monotonic)
1080	{	2263	{
1081	struct timespec ts;	2264	struct timespec ts;
		2265
1082	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	2266	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1083	have_monotonic = 1;	2267	have_monotonic = 1;
1084	}	2268	}
1085	#endif
1086
1087	ev_rt_now = ev_time ();
1088	mn_now = get_clock ();
1089	now_floor = mn_now;
1090	rtmn_diff = ev_rt_now - mn_now;
1091
1092	io_blocktime = 0.;
1093	timeout_blocktime = 0.;
1094	backend = 0;
1095	backend_fd = -1;
1096	gotasync = 0;
1097	#if EV_USE_INOTIFY
1098	fs_fd = -2;
1099	#endif	2269	#endif
1100		2270
1101	/* pid check not overridable via env */	2271	/* pid check not overridable via env */
1102	#ifndef _WIN32	2272	#ifndef _WIN32
1103	if (flags & EVFLAG_FORKCHECK)	2273	if (flags & EVFLAG_FORKCHECK)
…		…
1107	if (!(flags & EVFLAG_NOENV)	2277	if (!(flags & EVFLAG_NOENV)
1108	&& !enable_secure ()	2278	&& !enable_secure ()
1109	&& getenv ("LIBEV_FLAGS"))	2279	&& getenv ("LIBEV_FLAGS"))
1110	flags = atoi (getenv ("LIBEV_FLAGS"));	2280	flags = atoi (getenv ("LIBEV_FLAGS"));
1111		2281
1112	if (!(flags & 0x0000ffffUL))	2282	ev_rt_now = ev_time ();
		2283	mn_now = get_clock ();
		2284	now_floor = mn_now;
		2285	rtmn_diff = ev_rt_now - mn_now;
		2286	#if EV_FEATURE_API
		2287	invoke_cb = ev_invoke_pending;
		2288	#endif
		2289
		2290	io_blocktime = 0.;
		2291	timeout_blocktime = 0.;
		2292	backend = 0;
		2293	backend_fd = -1;
		2294	sig_pending = 0;
		2295	#if EV_ASYNC_ENABLE
		2296	async_pending = 0;
		2297	#endif
		2298	pipe_write_skipped = 0;
		2299	pipe_write_wanted = 0;
		2300	#if EV_USE_INOTIFY
		2301	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
		2302	#endif
		2303	#if EV_USE_SIGNALFD
		2304	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
		2305	#endif
		2306
		2307	if (!(flags & EVBACKEND_MASK))
1113	flags |= ev_recommended_backends ();	2308	flags |= ev_recommended_backends ();
1114		2309
		2310	#if EV_USE_IOCP
		2311	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		2312	#endif
1115	#if EV_USE_PORT	2313	#if EV_USE_PORT
1116	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	2314	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1117	#endif	2315	#endif
1118	#if EV_USE_KQUEUE	2316	#if EV_USE_KQUEUE
1119	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	2317	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1126	#endif	2324	#endif
1127	#if EV_USE_SELECT	2325	#if EV_USE_SELECT
1128	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	2326	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1129	#endif	2327	#endif
1130		2328
		2329	ev_prepare_init (&pending_w, pendingcb);
		2330
		2331	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1131	ev_init (&pipeev, pipecb);	2332	ev_init (&pipe_w, pipecb);
1132	ev_set_priority (&pipeev, EV_MAXPRI);	2333	ev_set_priority (&pipe_w, EV_MAXPRI);
		2334	#endif
1133	}	2335	}
1134	}	2336	}
1135		2337
1136	static void noinline	2338	/* free up a loop structure */
		2339	void ecb_cold
1137	loop_destroy (EV_P)	2340	ev_loop_destroy (EV_P)
1138	{	2341	{
1139	int i;	2342	int i;
1140		2343
		2344	#if EV_MULTIPLICITY
		2345	/* mimic free (0) */
		2346	if (!EV_A)
		2347	return;
		2348	#endif
		2349
		2350	#if EV_CLEANUP_ENABLE
		2351	/* queue cleanup watchers (and execute them) */
		2352	if (expect_false (cleanupcnt))
		2353	{
		2354	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		2355	EV_INVOKE_PENDING;
		2356	}
		2357	#endif
		2358
		2359	#if EV_CHILD_ENABLE
		2360	if (ev_is_default_loop (EV_A) && ev_is_active (&childev))
		2361	{
		2362	ev_ref (EV_A); /* child watcher */
		2363	ev_signal_stop (EV_A_ &childev);
		2364	}
		2365	#endif
		2366
1141	if (ev_is_active (&pipeev))	2367	if (ev_is_active (&pipe_w))
1142	{	2368	{
1143	ev_ref (EV_A); /* signal watcher */	2369	/*ev_ref (EV_A);*/
1144	ev_io_stop (EV_A_ &pipeev);	2370	/*ev_io_stop (EV_A_ &pipe_w);*/
1145		2371
1146	close (evpipe [0]); evpipe [0] = 0;	2372	#if EV_USE_EVENTFD
1147	close (evpipe [1]); evpipe [1] = 0;	2373	if (evfd >= 0)
		2374	close (evfd);
		2375	#endif
		2376
		2377	if (evpipe [0] >= 0)
		2378	{
		2379	EV_WIN32_CLOSE_FD (evpipe [0]);
		2380	EV_WIN32_CLOSE_FD (evpipe [1]);
		2381	}
1148	}	2382	}
		2383
		2384	#if EV_USE_SIGNALFD
		2385	if (ev_is_active (&sigfd_w))
		2386	close (sigfd);
		2387	#endif
1149		2388
1150	#if EV_USE_INOTIFY	2389	#if EV_USE_INOTIFY
1151	if (fs_fd >= 0)	2390	if (fs_fd >= 0)
1152	close (fs_fd);	2391	close (fs_fd);
1153	#endif	2392	#endif
1154		2393
1155	if (backend_fd >= 0)	2394	if (backend_fd >= 0)
1156	close (backend_fd);	2395	close (backend_fd);
1157		2396
		2397	#if EV_USE_IOCP
		2398	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		2399	#endif
1158	#if EV_USE_PORT	2400	#if EV_USE_PORT
1159	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	2401	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1160	#endif	2402	#endif
1161	#if EV_USE_KQUEUE	2403	#if EV_USE_KQUEUE
1162	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	2404	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1177	#if EV_IDLE_ENABLE	2419	#if EV_IDLE_ENABLE
1178	array_free (idle, [i]);	2420	array_free (idle, [i]);
1179	#endif	2421	#endif
1180	}	2422	}
1181		2423
1182	ev_free (anfds); anfdmax = 0;	2424	ev_free (anfds); anfds = 0; anfdmax = 0;
1183		2425
1184	/* have to use the microsoft-never-gets-it-right macro */	2426	/* have to use the microsoft-never-gets-it-right macro */
		2427	array_free (rfeed, EMPTY);
1185	array_free (fdchange, EMPTY);	2428	array_free (fdchange, EMPTY);
1186	array_free (timer, EMPTY);	2429	array_free (timer, EMPTY);
1187	#if EV_PERIODIC_ENABLE	2430	#if EV_PERIODIC_ENABLE
1188	array_free (periodic, EMPTY);	2431	array_free (periodic, EMPTY);
1189	#endif	2432	#endif
1190	#if EV_FORK_ENABLE	2433	#if EV_FORK_ENABLE
1191	array_free (fork, EMPTY);	2434	array_free (fork, EMPTY);
1192	#endif	2435	#endif
		2436	#if EV_CLEANUP_ENABLE
		2437	array_free (cleanup, EMPTY);
		2438	#endif
1193	array_free (prepare, EMPTY);	2439	array_free (prepare, EMPTY);
1194	array_free (check, EMPTY);	2440	array_free (check, EMPTY);
1195	#if EV_ASYNC_ENABLE	2441	#if EV_ASYNC_ENABLE
1196	array_free (async, EMPTY);	2442	array_free (async, EMPTY);
1197	#endif	2443	#endif
1198		2444
1199	backend = 0;	2445	backend = 0;
1200	}
1201		2446
		2447	#if EV_MULTIPLICITY
		2448	if (ev_is_default_loop (EV_A))
		2449	#endif
		2450	ev_default_loop_ptr = 0;
		2451	#if EV_MULTIPLICITY
		2452	else
		2453	ev_free (EV_A);
		2454	#endif
		2455	}
		2456
		2457	#if EV_USE_INOTIFY
1202	void inline_size infy_fork (EV_P);	2458	inline_size void infy_fork (EV_P);
		2459	#endif
1203		2460
1204	void inline_size	2461	inline_size void
1205	loop_fork (EV_P)	2462	loop_fork (EV_P)
1206	{	2463	{
1207	#if EV_USE_PORT	2464	#if EV_USE_PORT
1208	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	2465	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1209	#endif	2466	#endif
…		…
1215	#endif	2472	#endif
1216	#if EV_USE_INOTIFY	2473	#if EV_USE_INOTIFY
1217	infy_fork (EV_A);	2474	infy_fork (EV_A);
1218	#endif	2475	#endif
1219		2476
1220	if (ev_is_active (&pipeev))	2477	if (ev_is_active (&pipe_w))
1221	{	2478	{
1222	/* this "locks" the handlers against writing to the pipe */	2479	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1223	gotsig = gotasync = 1;
1224		2480
1225	ev_ref (EV_A);	2481	ev_ref (EV_A);
1226	ev_io_stop (EV_A_ &pipeev);	2482	ev_io_stop (EV_A_ &pipe_w);
1227	close (evpipe [0]);
1228	close (evpipe [1]);
1229		2483
		2484	#if EV_USE_EVENTFD
		2485	if (evfd >= 0)
		2486	close (evfd);
		2487	#endif
		2488
		2489	if (evpipe [0] >= 0)
		2490	{
		2491	EV_WIN32_CLOSE_FD (evpipe [0]);
		2492	EV_WIN32_CLOSE_FD (evpipe [1]);
		2493	}
		2494
		2495	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1230	evpipe_init (EV_A);	2496	evpipe_init (EV_A);
1231	/* now iterate over everything, in case we missed something */	2497	/* now iterate over everything, in case we missed something */
1232	pipecb (EV_A_ &pipeev, EV_READ);	2498	pipecb (EV_A_ &pipe_w, EV_READ);
		2499	#endif
1233	}	2500	}
1234		2501
1235	postfork = 0;	2502	postfork = 0;
1236	}	2503	}
1237		2504
1238	#if EV_MULTIPLICITY	2505	#if EV_MULTIPLICITY
		2506
1239	struct ev_loop *	2507	struct ev_loop * ecb_cold
1240	ev_loop_new (unsigned int flags)	2508	ev_loop_new (unsigned int flags) EV_THROW
1241	{	2509	{
1242	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2510	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1243		2511
1244	memset (loop, 0, sizeof (struct ev_loop));	2512	memset (EV_A, 0, sizeof (struct ev_loop));
1245
1246	loop_init (EV_A_ flags);	2513	loop_init (EV_A_ flags);
1247		2514
1248	if (ev_backend (EV_A))	2515	if (ev_backend (EV_A))
1249	return loop;	2516	return EV_A;
1250		2517
		2518	ev_free (EV_A);
1251	return 0;	2519	return 0;
1252	}	2520	}
1253		2521
1254	void	2522	#endif /* multiplicity */
1255	ev_loop_destroy (EV_P)
1256	{
1257	loop_destroy (EV_A);
1258	ev_free (loop);
1259	}
1260		2523
1261	void	2524	#if EV_VERIFY
1262	ev_loop_fork (EV_P)	2525	static void noinline ecb_cold
		2526	verify_watcher (EV_P_ W w)
1263	{	2527	{
1264	postfork = 1; /* must be in line with ev_default_fork */	2528	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1265	}
1266		2529
		2530	if (w->pending)
		2531	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		2532	}
		2533
		2534	static void noinline ecb_cold
		2535	verify_heap (EV_P_ ANHE *heap, int N)
		2536	{
		2537	int i;
		2538
		2539	for (i = HEAP0; i < N + HEAP0; ++i)
		2540	{
		2541	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		2542	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		2543	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		2544
		2545	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		2546	}
		2547	}
		2548
		2549	static void noinline ecb_cold
		2550	array_verify (EV_P_ W *ws, int cnt)
		2551	{
		2552	while (cnt--)
		2553	{
		2554	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		2555	verify_watcher (EV_A_ ws [cnt]);
		2556	}
		2557	}
		2558	#endif
		2559
		2560	#if EV_FEATURE_API
		2561	void ecb_cold
		2562	ev_verify (EV_P) EV_THROW
		2563	{
		2564	#if EV_VERIFY
		2565	int i;
		2566	WL w, w2;
		2567
		2568	assert (activecnt >= -1);
		2569
		2570	assert (fdchangemax >= fdchangecnt);
		2571	for (i = 0; i < fdchangecnt; ++i)
		2572	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		2573
		2574	assert (anfdmax >= 0);
		2575	for (i = 0; i < anfdmax; ++i)
		2576	{
		2577	int j = 0;
		2578
		2579	for (w = w2 = anfds [i].head; w; w = w->next)
		2580	{
		2581	verify_watcher (EV_A_ (W)w);
		2582
		2583	if (j++ & 1)
		2584	{
		2585	assert (("libev: io watcher list contains a loop", w != w2));
		2586	w2 = w2->next;
		2587	}
		2588
		2589	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		2590	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		2591	}
		2592	}
		2593
		2594	assert (timermax >= timercnt);
		2595	verify_heap (EV_A_ timers, timercnt);
		2596
		2597	#if EV_PERIODIC_ENABLE
		2598	assert (periodicmax >= periodiccnt);
		2599	verify_heap (EV_A_ periodics, periodiccnt);
		2600	#endif
		2601
		2602	for (i = NUMPRI; i--; )
		2603	{
		2604	assert (pendingmax [i] >= pendingcnt [i]);
		2605	#if EV_IDLE_ENABLE
		2606	assert (idleall >= 0);
		2607	assert (idlemax [i] >= idlecnt [i]);
		2608	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		2609	#endif
		2610	}
		2611
		2612	#if EV_FORK_ENABLE
		2613	assert (forkmax >= forkcnt);
		2614	array_verify (EV_A_ (W *)forks, forkcnt);
		2615	#endif
		2616
		2617	#if EV_CLEANUP_ENABLE
		2618	assert (cleanupmax >= cleanupcnt);
		2619	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2620	#endif
		2621
		2622	#if EV_ASYNC_ENABLE
		2623	assert (asyncmax >= asynccnt);
		2624	array_verify (EV_A_ (W *)asyncs, asynccnt);
		2625	#endif
		2626
		2627	#if EV_PREPARE_ENABLE
		2628	assert (preparemax >= preparecnt);
		2629	array_verify (EV_A_ (W *)prepares, preparecnt);
		2630	#endif
		2631
		2632	#if EV_CHECK_ENABLE
		2633	assert (checkmax >= checkcnt);
		2634	array_verify (EV_A_ (W *)checks, checkcnt);
		2635	#endif
		2636
		2637	# if 0
		2638	#if EV_CHILD_ENABLE
		2639	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		2640	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		2641	#endif
		2642	# endif
		2643	#endif
		2644	}
1267	#endif	2645	#endif
1268		2646
1269	#if EV_MULTIPLICITY	2647	#if EV_MULTIPLICITY
1270	struct ev_loop *	2648	struct ev_loop * ecb_cold
1271	ev_default_loop_init (unsigned int flags)
1272	#else	2649	#else
1273	int	2650	int
		2651	#endif
1274	ev_default_loop (unsigned int flags)	2652	ev_default_loop (unsigned int flags) EV_THROW
1275	#endif
1276	{	2653	{
1277	if (!ev_default_loop_ptr)	2654	if (!ev_default_loop_ptr)
1278	{	2655	{
1279	#if EV_MULTIPLICITY	2656	#if EV_MULTIPLICITY
1280	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	2657	EV_P = ev_default_loop_ptr = &default_loop_struct;
1281	#else	2658	#else
1282	ev_default_loop_ptr = 1;	2659	ev_default_loop_ptr = 1;
1283	#endif	2660	#endif
1284		2661
1285	loop_init (EV_A_ flags);	2662	loop_init (EV_A_ flags);
1286		2663
1287	if (ev_backend (EV_A))	2664	if (ev_backend (EV_A))
1288	{	2665	{
1289	#ifndef _WIN32	2666	#if EV_CHILD_ENABLE
1290	ev_signal_init (&childev, childcb, SIGCHLD);	2667	ev_signal_init (&childev, childcb, SIGCHLD);
1291	ev_set_priority (&childev, EV_MAXPRI);	2668	ev_set_priority (&childev, EV_MAXPRI);
1292	ev_signal_start (EV_A_ &childev);	2669	ev_signal_start (EV_A_ &childev);
1293	ev_unref (EV_A); /* child watcher should not keep loop alive */	2670	ev_unref (EV_A); /* child watcher should not keep loop alive */
1294	#endif	2671	#endif
…		…
1299		2676
1300	return ev_default_loop_ptr;	2677	return ev_default_loop_ptr;
1301	}	2678	}
1302		2679
1303	void	2680	void
1304	ev_default_destroy (void)	2681	ev_loop_fork (EV_P) EV_THROW
1305	{	2682	{
1306	#if EV_MULTIPLICITY
1307	struct ev_loop *loop = ev_default_loop_ptr;
1308	#endif
1309
1310	#ifndef _WIN32
1311	ev_ref (EV_A); /* child watcher */
1312	ev_signal_stop (EV_A_ &childev);
1313	#endif
1314
1315	loop_destroy (EV_A);
1316	}
1317
1318	void
1319	ev_default_fork (void)
1320	{
1321	#if EV_MULTIPLICITY
1322	struct ev_loop *loop = ev_default_loop_ptr;
1323	#endif
1324
1325	if (backend)
1326	postfork = 1; /* must be in line with ev_loop_fork */	2683	postfork = 1; /* must be in line with ev_default_fork */
1327	}	2684	}
1328		2685
1329	/*****************************************************************************/	2686	/*****************************************************************************/
1330		2687
1331	void	2688	void
1332	ev_invoke (EV_P_ void *w, int revents)	2689	ev_invoke (EV_P_ void *w, int revents)
1333	{	2690	{
1334	EV_CB_INVOKE ((W)w, revents);	2691	EV_CB_INVOKE ((W)w, revents);
1335	}	2692	}
1336		2693
1337	void inline_speed	2694	unsigned int
1338	call_pending (EV_P)	2695	ev_pending_count (EV_P) EV_THROW
1339	{	2696	{
1340	int pri;	2697	int pri;
		2698	unsigned int count = 0;
1341		2699
1342	for (pri = NUMPRI; pri--; )	2700	for (pri = NUMPRI; pri--; )
		2701	count += pendingcnt [pri];
		2702
		2703	return count;
		2704	}
		2705
		2706	void noinline
		2707	ev_invoke_pending (EV_P)
		2708	{
		2709	for (pendingpri = NUMPRI; pendingpri--; ) /* pendingpri is modified during the loop */
1343	while (pendingcnt [pri])	2710	while (pendingcnt [pendingpri])
1344	{	2711	{
1345	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2712	ANPENDING *p = pendings [pendingpri] + --pendingcnt [pendingpri];
1346		2713
1347	if (expect_true (p->w))
1348	{
1349	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1350
1351	p->w->pending = 0;	2714	p->w->pending = 0;
1352	EV_CB_INVOKE (p->w, p->events);	2715	EV_CB_INVOKE (p->w, p->events);
1353	}	2716	EV_FREQUENT_CHECK;
1354	}	2717	}
1355	}	2718	}
1356		2719
1357	void inline_size
1358	timers_reify (EV_P)
1359	{
1360	while (timercnt && ((WT)timers [0])->at <= mn_now)
1361	{
1362	ev_timer *w = (ev_timer *)timers [0];
1363
1364	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1365
1366	/* first reschedule or stop timer */
1367	if (w->repeat)
1368	{
1369	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1370
1371	((WT)w)->at += w->repeat;
1372	if (((WT)w)->at < mn_now)
1373	((WT)w)->at = mn_now;
1374
1375	downheap (timers, timercnt, 0);
1376	}
1377	else
1378	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1379
1380	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1381	}
1382	}
1383
1384	#if EV_PERIODIC_ENABLE
1385	void inline_size
1386	periodics_reify (EV_P)
1387	{
1388	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1389	{
1390	ev_periodic *w = (ev_periodic *)periodics [0];
1391
1392	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1393
1394	/* first reschedule or stop timer */
1395	if (w->reschedule_cb)
1396	{
1397	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1398	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1399	downheap (periodics, periodiccnt, 0);
1400	}
1401	else if (w->interval)
1402	{
1403	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1404	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1405	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1406	downheap (periodics, periodiccnt, 0);
1407	}
1408	else
1409	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1410
1411	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1412	}
1413	}
1414
1415	static void noinline
1416	periodics_reschedule (EV_P)
1417	{
1418	int i;
1419
1420	/* adjust periodics after time jump */
1421	for (i = 0; i < periodiccnt; ++i)
1422	{
1423	ev_periodic *w = (ev_periodic *)periodics [i];
1424
1425	if (w->reschedule_cb)
1426	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1427	else if (w->interval)
1428	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1429	}
1430
1431	/* now rebuild the heap */
1432	for (i = periodiccnt >> 1; i--; )
1433	downheap (periodics, periodiccnt, i);
1434	}
1435	#endif
1436
1437	#if EV_IDLE_ENABLE	2720	#if EV_IDLE_ENABLE
1438	void inline_size	2721	/* make idle watchers pending. this handles the "call-idle */
		2722	/* only when higher priorities are idle" logic */
		2723	inline_size void
1439	idle_reify (EV_P)	2724	idle_reify (EV_P)
1440	{	2725	{
1441	if (expect_false (idleall))	2726	if (expect_false (idleall))
1442	{	2727	{
1443	int pri;	2728	int pri;
…		…
1455	}	2740	}
1456	}	2741	}
1457	}	2742	}
1458	#endif	2743	#endif
1459		2744
1460	void inline_speed	2745	/* make timers pending */
		2746	inline_size void
		2747	timers_reify (EV_P)
		2748	{
		2749	EV_FREQUENT_CHECK;
		2750
		2751	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2752	{
		2753	do
		2754	{
		2755	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2756
		2757	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2758
		2759	/* first reschedule or stop timer */
		2760	if (w->repeat)
		2761	{
		2762	ev_at (w) += w->repeat;
		2763	if (ev_at (w) < mn_now)
		2764	ev_at (w) = mn_now;
		2765
		2766	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2767
		2768	ANHE_at_cache (timers [HEAP0]);
		2769	downheap (timers, timercnt, HEAP0);
		2770	}
		2771	else
		2772	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2773
		2774	EV_FREQUENT_CHECK;
		2775	feed_reverse (EV_A_ (W)w);
		2776	}
		2777	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2778
		2779	feed_reverse_done (EV_A_ EV_TIMER);
		2780	}
		2781	}
		2782
		2783	#if EV_PERIODIC_ENABLE
		2784
		2785	static void noinline
		2786	periodic_recalc (EV_P_ ev_periodic *w)
		2787	{
		2788	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2789	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2790
		2791	/* the above almost always errs on the low side */
		2792	while (at <= ev_rt_now)
		2793	{
		2794	ev_tstamp nat = at + w->interval;
		2795
		2796	/* when resolution fails us, we use ev_rt_now */
		2797	if (expect_false (nat == at))
		2798	{
		2799	at = ev_rt_now;
		2800	break;
		2801	}
		2802
		2803	at = nat;
		2804	}
		2805
		2806	ev_at (w) = at;
		2807	}
		2808
		2809	/* make periodics pending */
		2810	inline_size void
		2811	periodics_reify (EV_P)
		2812	{
		2813	EV_FREQUENT_CHECK;
		2814
		2815	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2816	{
		2817	int feed_count = 0;
		2818
		2819	do
		2820	{
		2821	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2822
		2823	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2824
		2825	/* first reschedule or stop timer */
		2826	if (w->reschedule_cb)
		2827	{
		2828	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2829
		2830	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2831
		2832	ANHE_at_cache (periodics [HEAP0]);
		2833	downheap (periodics, periodiccnt, HEAP0);
		2834	}
		2835	else if (w->interval)
		2836	{
		2837	periodic_recalc (EV_A_ w);
		2838	ANHE_at_cache (periodics [HEAP0]);
		2839	downheap (periodics, periodiccnt, HEAP0);
		2840	}
		2841	else
		2842	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2843
		2844	EV_FREQUENT_CHECK;
		2845	feed_reverse (EV_A_ (W)w);
		2846	}
		2847	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2848
		2849	feed_reverse_done (EV_A_ EV_PERIODIC);
		2850	}
		2851	}
		2852
		2853	/* simply recalculate all periodics */
		2854	/* TODO: maybe ensure that at least one event happens when jumping forward? */
		2855	static void noinline ecb_cold
		2856	periodics_reschedule (EV_P)
		2857	{
		2858	int i;
		2859
		2860	/* adjust periodics after time jump */
		2861	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2862	{
		2863	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2864
		2865	if (w->reschedule_cb)
		2866	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2867	else if (w->interval)
		2868	periodic_recalc (EV_A_ w);
		2869
		2870	ANHE_at_cache (periodics [i]);
		2871	}
		2872
		2873	reheap (periodics, periodiccnt);
		2874	}
		2875	#endif
		2876
		2877	/* adjust all timers by a given offset */
		2878	static void noinline ecb_cold
		2879	timers_reschedule (EV_P_ ev_tstamp adjust)
		2880	{
		2881	int i;
		2882
		2883	for (i = 0; i < timercnt; ++i)
		2884	{
		2885	ANHE *he = timers + i + HEAP0;
		2886	ANHE_w (*he)->at += adjust;
		2887	ANHE_at_cache (*he);
		2888	}
		2889	}
		2890
		2891	/* fetch new monotonic and realtime times from the kernel */
		2892	/* also detect if there was a timejump, and act accordingly */
		2893	inline_speed void
1461	time_update (EV_P_ ev_tstamp max_block)	2894	time_update (EV_P_ ev_tstamp max_block)
1462	{	2895	{
1463	int i;
1464
1465	#if EV_USE_MONOTONIC	2896	#if EV_USE_MONOTONIC
1466	if (expect_true (have_monotonic))	2897	if (expect_true (have_monotonic))
1467	{	2898	{
		2899	int i;
1468	ev_tstamp odiff = rtmn_diff;	2900	ev_tstamp odiff = rtmn_diff;
1469		2901
1470	mn_now = get_clock ();	2902	mn_now = get_clock ();
1471		2903
1472	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2904	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1488	* doesn't hurt either as we only do this on time-jumps or	2920	* doesn't hurt either as we only do this on time-jumps or
1489	* in the unlikely event of having been preempted here.	2921	* in the unlikely event of having been preempted here.
1490	*/	2922	*/
1491	for (i = 4; --i; )	2923	for (i = 4; --i; )
1492	{	2924	{
		2925	ev_tstamp diff;
1493	rtmn_diff = ev_rt_now - mn_now;	2926	rtmn_diff = ev_rt_now - mn_now;
1494		2927
1495	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2928	diff = odiff - rtmn_diff;
		2929
		2930	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1496	return; /* all is well */	2931	return; /* all is well */
1497		2932
1498	ev_rt_now = ev_time ();	2933	ev_rt_now = ev_time ();
1499	mn_now = get_clock ();	2934	mn_now = get_clock ();
1500	now_floor = mn_now;	2935	now_floor = mn_now;
1501	}	2936	}
1502		2937
		2938	/* no timer adjustment, as the monotonic clock doesn't jump */
		2939	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1503	# if EV_PERIODIC_ENABLE	2940	# if EV_PERIODIC_ENABLE
1504	periodics_reschedule (EV_A);	2941	periodics_reschedule (EV_A);
1505	# endif	2942	# endif
1506	/* no timer adjustment, as the monotonic clock doesn't jump */
1507	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1508	}	2943	}
1509	else	2944	else
1510	#endif	2945	#endif
1511	{	2946	{
1512	ev_rt_now = ev_time ();	2947	ev_rt_now = ev_time ();
1513		2948
1514	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2949	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1515	{	2950	{
		2951	/* adjust timers. this is easy, as the offset is the same for all of them */
		2952	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1516	#if EV_PERIODIC_ENABLE	2953	#if EV_PERIODIC_ENABLE
1517	periodics_reschedule (EV_A);	2954	periodics_reschedule (EV_A);
1518	#endif	2955	#endif
1519	/* adjust timers. this is easy, as the offset is the same for all of them */
1520	for (i = 0; i < timercnt; ++i)
1521	((WT)timers [i])->at += ev_rt_now - mn_now;
1522	}	2956	}
1523		2957
1524	mn_now = ev_rt_now;	2958	mn_now = ev_rt_now;
1525	}	2959	}
1526	}	2960	}
1527		2961
1528	void	2962	int
1529	ev_ref (EV_P)
1530	{
1531	++activecnt;
1532	}
1533
1534	void
1535	ev_unref (EV_P)
1536	{
1537	--activecnt;
1538	}
1539
1540	static int loop_done;
1541
1542	void
1543	ev_loop (EV_P_ int flags)	2963	ev_run (EV_P_ int flags)
1544	{	2964	{
1545	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2965	#if EV_FEATURE_API
1546	? EVUNLOOP_ONE	2966	++loop_depth;
1547	: EVUNLOOP_CANCEL;	2967	#endif
1548		2968
		2969	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
		2970
		2971	loop_done = EVBREAK_CANCEL;
		2972
1549	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2973	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1550		2974
1551	do	2975	do
1552	{	2976	{
		2977	#if EV_VERIFY >= 2
		2978	ev_verify (EV_A);
		2979	#endif
		2980
1553	#ifndef _WIN32	2981	#ifndef _WIN32
1554	if (expect_false (curpid)) /* penalise the forking check even more */	2982	if (expect_false (curpid)) /* penalise the forking check even more */
1555	if (expect_false (getpid () != curpid))	2983	if (expect_false (getpid () != curpid))
1556	{	2984	{
1557	curpid = getpid ();	2985	curpid = getpid ();
…		…
1563	/* we might have forked, so queue fork handlers */	2991	/* we might have forked, so queue fork handlers */
1564	if (expect_false (postfork))	2992	if (expect_false (postfork))
1565	if (forkcnt)	2993	if (forkcnt)
1566	{	2994	{
1567	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2995	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1568	call_pending (EV_A);	2996	EV_INVOKE_PENDING;
1569	}	2997	}
1570	#endif	2998	#endif
1571		2999
		3000	#if EV_PREPARE_ENABLE
1572	/* queue prepare watchers (and execute them) */	3001	/* queue prepare watchers (and execute them) */
1573	if (expect_false (preparecnt))	3002	if (expect_false (preparecnt))
1574	{	3003	{
1575	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	3004	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1576	call_pending (EV_A);	3005	EV_INVOKE_PENDING;
1577	}	3006	}
		3007	#endif
1578		3008
1579	if (expect_false (!activecnt))	3009	if (expect_false (loop_done))
1580	break;	3010	break;
1581		3011
1582	/* we might have forked, so reify kernel state if necessary */	3012	/* we might have forked, so reify kernel state if necessary */
1583	if (expect_false (postfork))	3013	if (expect_false (postfork))
1584	loop_fork (EV_A);	3014	loop_fork (EV_A);
…		…
1589	/* calculate blocking time */	3019	/* calculate blocking time */
1590	{	3020	{
1591	ev_tstamp waittime = 0.;	3021	ev_tstamp waittime = 0.;
1592	ev_tstamp sleeptime = 0.;	3022	ev_tstamp sleeptime = 0.;
1593		3023
		3024	/* remember old timestamp for io_blocktime calculation */
		3025	ev_tstamp prev_mn_now = mn_now;
		3026
		3027	/* update time to cancel out callback processing overhead */
		3028	time_update (EV_A_ 1e100);
		3029
		3030	/* from now on, we want a pipe-wake-up */
		3031	pipe_write_wanted = 1;
		3032
		3033	ECB_MEMORY_FENCE; /* make sure pipe_write_wanted is visible before we check for potential skips */
		3034
1594	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	3035	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1595	{	3036	{
1596	/* update time to cancel out callback processing overhead */
1597	time_update (EV_A_ 1e100);
1598
1599	waittime = MAX_BLOCKTIME;	3037	waittime = MAX_BLOCKTIME;
1600		3038
1601	if (timercnt)	3039	if (timercnt)
1602	{	3040	{
1603	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	3041	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1604	if (waittime > to) waittime = to;	3042	if (waittime > to) waittime = to;
1605	}	3043	}
1606		3044
1607	#if EV_PERIODIC_ENABLE	3045	#if EV_PERIODIC_ENABLE
1608	if (periodiccnt)	3046	if (periodiccnt)
1609	{	3047	{
1610	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	3048	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1611	if (waittime > to) waittime = to;	3049	if (waittime > to) waittime = to;
1612	}	3050	}
1613	#endif	3051	#endif
1614		3052
		3053	/* don't let timeouts decrease the waittime below timeout_blocktime */
1615	if (expect_false (waittime < timeout_blocktime))	3054	if (expect_false (waittime < timeout_blocktime))
1616	waittime = timeout_blocktime;	3055	waittime = timeout_blocktime;
1617		3056
1618	sleeptime = waittime - backend_fudge;	3057	/* at this point, we NEED to wait, so we have to ensure */
		3058	/* to pass a minimum nonzero value to the backend */
		3059	if (expect_false (waittime < backend_mintime))
		3060	waittime = backend_mintime;
1619		3061
		3062	/* extra check because io_blocktime is commonly 0 */
1620	if (expect_true (sleeptime > io_blocktime))	3063	if (expect_false (io_blocktime))
1621	sleeptime = io_blocktime;
1622
1623	if (sleeptime)
1624	{	3064	{
		3065	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		3066
		3067	if (sleeptime > waittime - backend_mintime)
		3068	sleeptime = waittime - backend_mintime;
		3069
		3070	if (expect_true (sleeptime > 0.))
		3071	{
1625	ev_sleep (sleeptime);	3072	ev_sleep (sleeptime);
1626	waittime -= sleeptime;	3073	waittime -= sleeptime;
		3074	}
1627	}	3075	}
1628	}	3076	}
1629		3077
		3078	#if EV_FEATURE_API
1630	++loop_count;	3079	++loop_count;
		3080	#endif
		3081	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1631	backend_poll (EV_A_ waittime);	3082	backend_poll (EV_A_ waittime);
		3083	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		3084
		3085	pipe_write_wanted = 0; /* just an optimisation, no fence needed */
		3086
		3087	if (pipe_write_skipped)
		3088	{
		3089	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		3090	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		3091	}
		3092
1632		3093
1633	/* update ev_rt_now, do magic */	3094	/* update ev_rt_now, do magic */
1634	time_update (EV_A_ waittime + sleeptime);	3095	time_update (EV_A_ waittime + sleeptime);
1635	}	3096	}
1636		3097
…		…
1643	#if EV_IDLE_ENABLE	3104	#if EV_IDLE_ENABLE
1644	/* queue idle watchers unless other events are pending */	3105	/* queue idle watchers unless other events are pending */
1645	idle_reify (EV_A);	3106	idle_reify (EV_A);
1646	#endif	3107	#endif
1647		3108
		3109	#if EV_CHECK_ENABLE
1648	/* queue check watchers, to be executed first */	3110	/* queue check watchers, to be executed first */
1649	if (expect_false (checkcnt))	3111	if (expect_false (checkcnt))
1650	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	3112	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		3113	#endif
1651		3114
1652	call_pending (EV_A);	3115	EV_INVOKE_PENDING;
1653
1654	}	3116	}
1655	while (expect_true (activecnt && !loop_done));	3117	while (expect_true (
		3118	activecnt
		3119	&& !loop_done
		3120	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
		3121	));
1656		3122
1657	if (loop_done == EVUNLOOP_ONE)	3123	if (loop_done == EVBREAK_ONE)
1658	loop_done = EVUNLOOP_CANCEL;	3124	loop_done = EVBREAK_CANCEL;
		3125
		3126	#if EV_FEATURE_API
		3127	--loop_depth;
		3128	#endif
		3129
		3130	return activecnt;
1659	}	3131	}
1660		3132
1661	void	3133	void
1662	ev_unloop (EV_P_ int how)	3134	ev_break (EV_P_ int how) EV_THROW
1663	{	3135	{
1664	loop_done = how;	3136	loop_done = how;
1665	}	3137	}
1666		3138
		3139	void
		3140	ev_ref (EV_P) EV_THROW
		3141	{
		3142	++activecnt;
		3143	}
		3144
		3145	void
		3146	ev_unref (EV_P) EV_THROW
		3147	{
		3148	--activecnt;
		3149	}
		3150
		3151	void
		3152	ev_now_update (EV_P) EV_THROW
		3153	{
		3154	time_update (EV_A_ 1e100);
		3155	}
		3156
		3157	void
		3158	ev_suspend (EV_P) EV_THROW
		3159	{
		3160	ev_now_update (EV_A);
		3161	}
		3162
		3163	void
		3164	ev_resume (EV_P) EV_THROW
		3165	{
		3166	ev_tstamp mn_prev = mn_now;
		3167
		3168	ev_now_update (EV_A);
		3169	timers_reschedule (EV_A_ mn_now - mn_prev);
		3170	#if EV_PERIODIC_ENABLE
		3171	/* TODO: really do this? */
		3172	periodics_reschedule (EV_A);
		3173	#endif
		3174	}
		3175
1667	/*****************************************************************************/	3176	/*****************************************************************************/
		3177	/* singly-linked list management, used when the expected list length is short */
1668		3178
1669	void inline_size	3179	inline_size void
1670	wlist_add (WL *head, WL elem)	3180	wlist_add (WL *head, WL elem)
1671	{	3181	{
1672	elem->next = *head;	3182	elem->next = *head;
1673	*head = elem;	3183	*head = elem;
1674	}	3184	}
1675		3185
1676	void inline_size	3186	inline_size void
1677	wlist_del (WL *head, WL elem)	3187	wlist_del (WL *head, WL elem)
1678	{	3188	{
1679	while (*head)	3189	while (*head)
1680	{	3190	{
1681	if (*head == elem)	3191	if (expect_true (*head == elem))
1682	{	3192	{
1683	*head = elem->next;	3193	*head = elem->next;
1684	return;	3194	break;
1685	}	3195	}
1686		3196
1687	head = &(*head)->next;	3197	head = &(*head)->next;
1688	}	3198	}
1689	}	3199	}
1690		3200
1691	void inline_speed	3201	/* internal, faster, version of ev_clear_pending */
		3202	inline_speed void
1692	clear_pending (EV_P_ W w)	3203	clear_pending (EV_P_ W w)
1693	{	3204	{
1694	if (w->pending)	3205	if (w->pending)
1695	{	3206	{
1696	pendings [ABSPRI (w)][w->pending - 1].w = 0;	3207	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1697	w->pending = 0;	3208	w->pending = 0;
1698	}	3209	}
1699	}	3210	}
1700		3211
1701	int	3212	int
1702	ev_clear_pending (EV_P_ void *w)	3213	ev_clear_pending (EV_P_ void *w) EV_THROW
1703	{	3214	{
1704	W w_ = (W)w;	3215	W w_ = (W)w;
1705	int pending = w_->pending;	3216	int pending = w_->pending;
1706		3217
1707	if (expect_true (pending))	3218	if (expect_true (pending))
1708	{	3219	{
1709	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	3220	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		3221	p->w = (W)&pending_w;
1710	w_->pending = 0;	3222	w_->pending = 0;
1711	p->w = 0;
1712	return p->events;	3223	return p->events;
1713	}	3224	}
1714	else	3225	else
1715	return 0;	3226	return 0;
1716	}	3227	}
1717		3228
1718	void inline_size	3229	inline_size void
1719	pri_adjust (EV_P_ W w)	3230	pri_adjust (EV_P_ W w)
1720	{	3231	{
1721	int pri = w->priority;	3232	int pri = ev_priority (w);
1722	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	3233	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1723	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	3234	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1724	w->priority = pri;	3235	ev_set_priority (w, pri);
1725	}	3236	}
1726		3237
1727	void inline_speed	3238	inline_speed void
1728	ev_start (EV_P_ W w, int active)	3239	ev_start (EV_P_ W w, int active)
1729	{	3240	{
1730	pri_adjust (EV_A_ w);	3241	pri_adjust (EV_A_ w);
1731	w->active = active;	3242	w->active = active;
1732	ev_ref (EV_A);	3243	ev_ref (EV_A);
1733	}	3244	}
1734		3245
1735	void inline_size	3246	inline_size void
1736	ev_stop (EV_P_ W w)	3247	ev_stop (EV_P_ W w)
1737	{	3248	{
1738	ev_unref (EV_A);	3249	ev_unref (EV_A);
1739	w->active = 0;	3250	w->active = 0;
1740	}	3251	}
1741		3252
1742	/*****************************************************************************/	3253	/*****************************************************************************/
1743		3254
1744	void noinline	3255	void noinline
1745	ev_io_start (EV_P_ ev_io *w)	3256	ev_io_start (EV_P_ ev_io *w) EV_THROW
1746	{	3257	{
1747	int fd = w->fd;	3258	int fd = w->fd;
1748		3259
1749	if (expect_false (ev_is_active (w)))	3260	if (expect_false (ev_is_active (w)))
1750	return;	3261	return;
1751		3262
1752	assert (("ev_io_start called with negative fd", fd >= 0));	3263	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		3264	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		3265
		3266	EV_FREQUENT_CHECK;
1753		3267
1754	ev_start (EV_A_ (W)w, 1);	3268	ev_start (EV_A_ (W)w, 1);
1755	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	3269	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1756	wlist_add (&anfds[fd].head, (WL)w);	3270	wlist_add (&anfds[fd].head, (WL)w);
1757		3271
		3272	/* common bug, apparently */
		3273	assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
		3274
1758	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	3275	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1759	w->events &= ~EV_IOFDSET;	3276	w->events &= ~EV__IOFDSET;
		3277
		3278	EV_FREQUENT_CHECK;
1760	}	3279	}
1761		3280
1762	void noinline	3281	void noinline
1763	ev_io_stop (EV_P_ ev_io *w)	3282	ev_io_stop (EV_P_ ev_io *w) EV_THROW
1764	{	3283	{
1765	clear_pending (EV_A_ (W)w);	3284	clear_pending (EV_A_ (W)w);
1766	if (expect_false (!ev_is_active (w)))	3285	if (expect_false (!ev_is_active (w)))
1767	return;	3286	return;
1768		3287
1769	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	3288	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		3289
		3290	EV_FREQUENT_CHECK;
1770		3291
1771	wlist_del (&anfds[w->fd].head, (WL)w);	3292	wlist_del (&anfds[w->fd].head, (WL)w);
1772	ev_stop (EV_A_ (W)w);	3293	ev_stop (EV_A_ (W)w);
1773		3294
1774	fd_change (EV_A_ w->fd, 1);	3295	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
		3296
		3297	EV_FREQUENT_CHECK;
1775	}	3298	}
1776		3299
1777	void noinline	3300	void noinline
1778	ev_timer_start (EV_P_ ev_timer *w)	3301	ev_timer_start (EV_P_ ev_timer *w) EV_THROW
1779	{	3302	{
1780	if (expect_false (ev_is_active (w)))	3303	if (expect_false (ev_is_active (w)))
1781	return;	3304	return;
1782		3305
1783	((WT)w)->at += mn_now;	3306	ev_at (w) += mn_now;
1784		3307
1785	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	3308	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1786		3309
		3310	EV_FREQUENT_CHECK;
		3311
		3312	++timercnt;
1787	ev_start (EV_A_ (W)w, ++timercnt);	3313	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1788	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	3314	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1789	timers [timercnt - 1] = (WT)w;	3315	ANHE_w (timers [ev_active (w)]) = (WT)w;
1790	upheap (timers, timercnt - 1);	3316	ANHE_at_cache (timers [ev_active (w)]);
		3317	upheap (timers, ev_active (w));
1791		3318
		3319	EV_FREQUENT_CHECK;
		3320
1792	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	3321	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1793	}	3322	}
1794		3323
1795	void noinline	3324	void noinline
1796	ev_timer_stop (EV_P_ ev_timer *w)	3325	ev_timer_stop (EV_P_ ev_timer *w) EV_THROW
1797	{	3326	{
1798	clear_pending (EV_A_ (W)w);	3327	clear_pending (EV_A_ (W)w);
1799	if (expect_false (!ev_is_active (w)))	3328	if (expect_false (!ev_is_active (w)))
1800	return;	3329	return;
1801		3330
1802	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	3331	EV_FREQUENT_CHECK;
1803		3332
1804	{	3333	{
1805	int active = ((W)w)->active;	3334	int active = ev_active (w);
1806		3335
		3336	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		3337
		3338	--timercnt;
		3339
1807	if (expect_true (--active < --timercnt))	3340	if (expect_true (active < timercnt + HEAP0))
1808	{	3341	{
1809	timers [active] = timers [timercnt];	3342	timers [active] = timers [timercnt + HEAP0];
1810	adjustheap (timers, timercnt, active);	3343	adjustheap (timers, timercnt, active);
1811	}	3344	}
1812	}	3345	}
1813		3346
1814	((WT)w)->at -= mn_now;	3347	ev_at (w) -= mn_now;
1815		3348
1816	ev_stop (EV_A_ (W)w);	3349	ev_stop (EV_A_ (W)w);
		3350
		3351	EV_FREQUENT_CHECK;
1817	}	3352	}
1818		3353
1819	void noinline	3354	void noinline
1820	ev_timer_again (EV_P_ ev_timer *w)	3355	ev_timer_again (EV_P_ ev_timer *w) EV_THROW
1821	{	3356	{
		3357	EV_FREQUENT_CHECK;
		3358
		3359	clear_pending (EV_A_ (W)w);
		3360
1822	if (ev_is_active (w))	3361	if (ev_is_active (w))
1823	{	3362	{
1824	if (w->repeat)	3363	if (w->repeat)
1825	{	3364	{
1826	((WT)w)->at = mn_now + w->repeat;	3365	ev_at (w) = mn_now + w->repeat;
		3366	ANHE_at_cache (timers [ev_active (w)]);
1827	adjustheap (timers, timercnt, ((W)w)->active - 1);	3367	adjustheap (timers, timercnt, ev_active (w));
1828	}	3368	}
1829	else	3369	else
1830	ev_timer_stop (EV_A_ w);	3370	ev_timer_stop (EV_A_ w);
1831	}	3371	}
1832	else if (w->repeat)	3372	else if (w->repeat)
1833	{	3373	{
1834	w->at = w->repeat;	3374	ev_at (w) = w->repeat;
1835	ev_timer_start (EV_A_ w);	3375	ev_timer_start (EV_A_ w);
1836	}	3376	}
		3377
		3378	EV_FREQUENT_CHECK;
		3379	}
		3380
		3381	ev_tstamp
		3382	ev_timer_remaining (EV_P_ ev_timer *w) EV_THROW
		3383	{
		3384	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1837	}	3385	}
1838		3386
1839	#if EV_PERIODIC_ENABLE	3387	#if EV_PERIODIC_ENABLE
1840	void noinline	3388	void noinline
1841	ev_periodic_start (EV_P_ ev_periodic *w)	3389	ev_periodic_start (EV_P_ ev_periodic *w) EV_THROW
1842	{	3390	{
1843	if (expect_false (ev_is_active (w)))	3391	if (expect_false (ev_is_active (w)))
1844	return;	3392	return;
1845		3393
1846	if (w->reschedule_cb)	3394	if (w->reschedule_cb)
1847	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	3395	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1848	else if (w->interval)	3396	else if (w->interval)
1849	{	3397	{
1850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	3398	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1851	/* this formula differs from the one in periodic_reify because we do not always round up */	3399	periodic_recalc (EV_A_ w);
1852	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1853	}	3400	}
1854	else	3401	else
1855	((WT)w)->at = w->offset;	3402	ev_at (w) = w->offset;
1856		3403
		3404	EV_FREQUENT_CHECK;
		3405
		3406	++periodiccnt;
1857	ev_start (EV_A_ (W)w, ++periodiccnt);	3407	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1858	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	3408	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1859	periodics [periodiccnt - 1] = (WT)w;	3409	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1860	upheap (periodics, periodiccnt - 1);	3410	ANHE_at_cache (periodics [ev_active (w)]);
		3411	upheap (periodics, ev_active (w));
1861		3412
		3413	EV_FREQUENT_CHECK;
		3414
1862	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	3415	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1863	}	3416	}
1864		3417
1865	void noinline	3418	void noinline
1866	ev_periodic_stop (EV_P_ ev_periodic *w)	3419	ev_periodic_stop (EV_P_ ev_periodic *w) EV_THROW
1867	{	3420	{
1868	clear_pending (EV_A_ (W)w);	3421	clear_pending (EV_A_ (W)w);
1869	if (expect_false (!ev_is_active (w)))	3422	if (expect_false (!ev_is_active (w)))
1870	return;	3423	return;
1871		3424
1872	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	3425	EV_FREQUENT_CHECK;
1873		3426
1874	{	3427	{
1875	int active = ((W)w)->active;	3428	int active = ev_active (w);
1876		3429
		3430	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		3431
		3432	--periodiccnt;
		3433
1877	if (expect_true (--active < --periodiccnt))	3434	if (expect_true (active < periodiccnt + HEAP0))
1878	{	3435	{
1879	periodics [active] = periodics [periodiccnt];	3436	periodics [active] = periodics [periodiccnt + HEAP0];
1880	adjustheap (periodics, periodiccnt, active);	3437	adjustheap (periodics, periodiccnt, active);
1881	}	3438	}
1882	}	3439	}
1883		3440
1884	ev_stop (EV_A_ (W)w);	3441	ev_stop (EV_A_ (W)w);
		3442
		3443	EV_FREQUENT_CHECK;
1885	}	3444	}
1886		3445
1887	void noinline	3446	void noinline
1888	ev_periodic_again (EV_P_ ev_periodic *w)	3447	ev_periodic_again (EV_P_ ev_periodic *w) EV_THROW
1889	{	3448	{
1890	/* TODO: use adjustheap and recalculation */	3449	/* TODO: use adjustheap and recalculation */
1891	ev_periodic_stop (EV_A_ w);	3450	ev_periodic_stop (EV_A_ w);
1892	ev_periodic_start (EV_A_ w);	3451	ev_periodic_start (EV_A_ w);
1893	}	3452	}
…		…
1895		3454
1896	#ifndef SA_RESTART	3455	#ifndef SA_RESTART
1897	# define SA_RESTART 0	3456	# define SA_RESTART 0
1898	#endif	3457	#endif
1899		3458
		3459	#if EV_SIGNAL_ENABLE
		3460
1900	void noinline	3461	void noinline
1901	ev_signal_start (EV_P_ ev_signal *w)	3462	ev_signal_start (EV_P_ ev_signal *w) EV_THROW
1902	{	3463	{
1903	#if EV_MULTIPLICITY
1904	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1905	#endif
1906	if (expect_false (ev_is_active (w)))	3464	if (expect_false (ev_is_active (w)))
1907	return;	3465	return;
1908		3466
1909	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	3467	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1910		3468
1911	evpipe_init (EV_A);	3469	#if EV_MULTIPLICITY
		3470	assert (("libev: a signal must not be attached to two different loops",
		3471	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1912		3472
		3473	signals [w->signum - 1].loop = EV_A;
		3474	#endif
		3475
		3476	EV_FREQUENT_CHECK;
		3477
		3478	#if EV_USE_SIGNALFD
		3479	if (sigfd == -2)
1913	{	3480	{
1914	#ifndef _WIN32	3481	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1915	sigset_t full, prev;	3482	if (sigfd < 0 && errno == EINVAL)
1916	sigfillset (&full);	3483	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1917	sigprocmask (SIG_SETMASK, &full, &prev);
1918	#endif
1919		3484
1920	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	3485	if (sigfd >= 0)
		3486	{
		3487	fd_intern (sigfd); /* doing it twice will not hurt */
1921		3488
1922	#ifndef _WIN32	3489	sigemptyset (&sigfd_set);
1923	sigprocmask (SIG_SETMASK, &prev, 0);	3490
1924	#endif	3491	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		3492	ev_set_priority (&sigfd_w, EV_MAXPRI);
		3493	ev_io_start (EV_A_ &sigfd_w);
		3494	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		3495	}
1925	}	3496	}
		3497
		3498	if (sigfd >= 0)
		3499	{
		3500	/* TODO: check .head */
		3501	sigaddset (&sigfd_set, w->signum);
		3502	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		3503
		3504	signalfd (sigfd, &sigfd_set, 0);
		3505	}
		3506	#endif
1926		3507
1927	ev_start (EV_A_ (W)w, 1);	3508	ev_start (EV_A_ (W)w, 1);
1928	wlist_add (&signals [w->signum - 1].head, (WL)w);	3509	wlist_add (&signals [w->signum - 1].head, (WL)w);
1929		3510
1930	if (!((WL)w)->next)	3511	if (!((WL)w)->next)
		3512	# if EV_USE_SIGNALFD
		3513	if (sigfd < 0) /*TODO*/
		3514	# endif
1931	{	3515	{
1932	#if _WIN32	3516	# ifdef _WIN32
		3517	evpipe_init (EV_A);
		3518
1933	signal (w->signum, sighandler);	3519	signal (w->signum, ev_sighandler);
1934	#else	3520	# else
1935	struct sigaction sa;	3521	struct sigaction sa;
		3522
		3523	evpipe_init (EV_A);
		3524
1936	sa.sa_handler = sighandler;	3525	sa.sa_handler = ev_sighandler;
1937	sigfillset (&sa.sa_mask);	3526	sigfillset (&sa.sa_mask);
1938	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3527	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1939	sigaction (w->signum, &sa, 0);	3528	sigaction (w->signum, &sa, 0);
		3529
		3530	if (origflags & EVFLAG_NOSIGMASK)
		3531	{
		3532	sigemptyset (&sa.sa_mask);
		3533	sigaddset (&sa.sa_mask, w->signum);
		3534	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3535	}
1940	#endif	3536	#endif
1941	}	3537	}
		3538
		3539	EV_FREQUENT_CHECK;
1942	}	3540	}
1943		3541
1944	void noinline	3542	void noinline
1945	ev_signal_stop (EV_P_ ev_signal *w)	3543	ev_signal_stop (EV_P_ ev_signal *w) EV_THROW
1946	{	3544	{
1947	clear_pending (EV_A_ (W)w);	3545	clear_pending (EV_A_ (W)w);
1948	if (expect_false (!ev_is_active (w)))	3546	if (expect_false (!ev_is_active (w)))
1949	return;	3547	return;
1950		3548
		3549	EV_FREQUENT_CHECK;
		3550
1951	wlist_del (&signals [w->signum - 1].head, (WL)w);	3551	wlist_del (&signals [w->signum - 1].head, (WL)w);
1952	ev_stop (EV_A_ (W)w);	3552	ev_stop (EV_A_ (W)w);
1953		3553
1954	if (!signals [w->signum - 1].head)	3554	if (!signals [w->signum - 1].head)
		3555	{
		3556	#if EV_MULTIPLICITY
		3557	signals [w->signum - 1].loop = 0; /* unattach from signal */
		3558	#endif
		3559	#if EV_USE_SIGNALFD
		3560	if (sigfd >= 0)
		3561	{
		3562	sigset_t ss;
		3563
		3564	sigemptyset (&ss);
		3565	sigaddset (&ss, w->signum);
		3566	sigdelset (&sigfd_set, w->signum);
		3567
		3568	signalfd (sigfd, &sigfd_set, 0);
		3569	sigprocmask (SIG_UNBLOCK, &ss, 0);
		3570	}
		3571	else
		3572	#endif
1955	signal (w->signum, SIG_DFL);	3573	signal (w->signum, SIG_DFL);
		3574	}
		3575
		3576	EV_FREQUENT_CHECK;
1956	}	3577	}
		3578
		3579	#endif
		3580
		3581	#if EV_CHILD_ENABLE
1957		3582
1958	void	3583	void
1959	ev_child_start (EV_P_ ev_child *w)	3584	ev_child_start (EV_P_ ev_child *w) EV_THROW
1960	{	3585	{
1961	#if EV_MULTIPLICITY	3586	#if EV_MULTIPLICITY
1962	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	3587	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1963	#endif	3588	#endif
1964	if (expect_false (ev_is_active (w)))	3589	if (expect_false (ev_is_active (w)))
1965	return;	3590	return;
1966		3591
		3592	EV_FREQUENT_CHECK;
		3593
1967	ev_start (EV_A_ (W)w, 1);	3594	ev_start (EV_A_ (W)w, 1);
1968	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3595	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
		3596
		3597	EV_FREQUENT_CHECK;
1969	}	3598	}
1970		3599
1971	void	3600	void
1972	ev_child_stop (EV_P_ ev_child *w)	3601	ev_child_stop (EV_P_ ev_child *w) EV_THROW
1973	{	3602	{
1974	clear_pending (EV_A_ (W)w);	3603	clear_pending (EV_A_ (W)w);
1975	if (expect_false (!ev_is_active (w)))	3604	if (expect_false (!ev_is_active (w)))
1976	return;	3605	return;
1977		3606
		3607	EV_FREQUENT_CHECK;
		3608
1978	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3609	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1979	ev_stop (EV_A_ (W)w);	3610	ev_stop (EV_A_ (W)w);
		3611
		3612	EV_FREQUENT_CHECK;
1980	}	3613	}
		3614
		3615	#endif
1981		3616
1982	#if EV_STAT_ENABLE	3617	#if EV_STAT_ENABLE
1983		3618
1984	# ifdef _WIN32	3619	# ifdef _WIN32
1985	# undef lstat	3620	# undef lstat
1986	# define lstat(a,b) _stati64 (a,b)	3621	# define lstat(a,b) _stati64 (a,b)
1987	# endif	3622	# endif
1988		3623
1989	#define DEF_STAT_INTERVAL 5.0074891	3624	#define DEF_STAT_INTERVAL 5.0074891
		3625	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1990	#define MIN_STAT_INTERVAL 0.1074891	3626	#define MIN_STAT_INTERVAL 0.1074891
1991		3627
1992	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	3628	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1993		3629
1994	#if EV_USE_INOTIFY	3630	#if EV_USE_INOTIFY
1995	# define EV_INOTIFY_BUFSIZE 8192	3631
		3632	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		3633	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
1996		3634
1997	static void noinline	3635	static void noinline
1998	infy_add (EV_P_ ev_stat *w)	3636	infy_add (EV_P_ ev_stat *w)
1999	{	3637	{
2000	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);	3638	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);
2001		3639
2002	if (w->wd < 0)	3640	if (w->wd >= 0)
		3641	{
		3642	struct statfs sfs;
		3643
		3644	/* now local changes will be tracked by inotify, but remote changes won't */
		3645	/* unless the filesystem is known to be local, we therefore still poll */
		3646	/* also do poll on <2.6.25, but with normal frequency */
		3647
		3648	if (!fs_2625)
		3649	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3650	else if (!statfs (w->path, &sfs)
		3651	&& (sfs.f_type == 0x1373 /* devfs */
		3652	|| sfs.f_type == 0xEF53 /* ext2/3 */
		3653	|| sfs.f_type == 0x3153464a /* jfs */
		3654	|| sfs.f_type == 0x52654973 /* reiser3 */
		3655	|| sfs.f_type == 0x01021994 /* tempfs */
		3656	|| sfs.f_type == 0x58465342 /* xfs */))
		3657	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		3658	else
		3659	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2003	{	3660	}
2004	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	3661	else
		3662	{
		3663	/* can't use inotify, continue to stat */
		3664	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2005		3665
2006	/* monitor some parent directory for speedup hints */	3666	/* if path is not there, monitor some parent directory for speedup hints */
		3667	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		3668	/* but an efficiency issue only */
2007	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	3669	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2008	{	3670	{
2009	char path [4096];	3671	char path [4096];
2010	strcpy (path, w->path);	3672	strcpy (path, w->path);
2011		3673
…		…
2014	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	3676	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2015	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	3677	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2016		3678
2017	char *pend = strrchr (path, '/');	3679	char *pend = strrchr (path, '/');
2018		3680
2019	if (!pend)	3681	if (!pend || pend == path)
2020	break; /* whoops, no '/', complain to your admin */	3682	break;
2021		3683
2022	*pend = 0;	3684	*pend = 0;
2023	w->wd = inotify_add_watch (fs_fd, path, mask);	3685	w->wd = inotify_add_watch (fs_fd, path, mask);
2024	}	3686	}
2025	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3687	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2026	}	3688	}
2027	}	3689	}
2028	else
2029	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2030		3690
2031	if (w->wd >= 0)	3691	if (w->wd >= 0)
2032	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3692	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
		3693
		3694	/* now re-arm timer, if required */
		3695	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		3696	ev_timer_again (EV_A_ &w->timer);
		3697	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2033	}	3698	}
2034		3699
2035	static void noinline	3700	static void noinline
2036	infy_del (EV_P_ ev_stat *w)	3701	infy_del (EV_P_ ev_stat *w)
2037	{	3702	{
…		…
2040		3705
2041	if (wd < 0)	3706	if (wd < 0)
2042	return;	3707	return;
2043		3708
2044	w->wd = -2;	3709	w->wd = -2;
2045	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3710	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2046	wlist_del (&fs_hash [slot].head, (WL)w);	3711	wlist_del (&fs_hash [slot].head, (WL)w);
2047		3712
2048	/* remove this watcher, if others are watching it, they will rearm */	3713	/* remove this watcher, if others are watching it, they will rearm */
2049	inotify_rm_watch (fs_fd, wd);	3714	inotify_rm_watch (fs_fd, wd);
2050	}	3715	}
2051		3716
2052	static void noinline	3717	static void noinline
2053	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3718	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2054	{	3719	{
2055	if (slot < 0)	3720	if (slot < 0)
2056	/* overflow, need to check for all hahs slots */	3721	/* overflow, need to check for all hash slots */
2057	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3722	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2058	infy_wd (EV_A_ slot, wd, ev);	3723	infy_wd (EV_A_ slot, wd, ev);
2059	else	3724	else
2060	{	3725	{
2061	WL w_;	3726	WL w_;
2062		3727
2063	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3728	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2064	{	3729	{
2065	ev_stat *w = (ev_stat *)w_;	3730	ev_stat *w = (ev_stat *)w_;
2066	w_ = w_->next; /* lets us remove this watcher and all before it */	3731	w_ = w_->next; /* lets us remove this watcher and all before it */
2067		3732
2068	if (w->wd == wd || wd == -1)	3733	if (w->wd == wd || wd == -1)
2069	{	3734	{
2070	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3735	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2071	{	3736	{
		3737	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2072	w->wd = -1;	3738	w->wd = -1;
2073	infy_add (EV_A_ w); /* re-add, no matter what */	3739	infy_add (EV_A_ w); /* re-add, no matter what */
2074	}	3740	}
2075		3741
2076	stat_timer_cb (EV_A_ &w->timer, 0);	3742	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2081		3747
2082	static void	3748	static void
2083	infy_cb (EV_P_ ev_io *w, int revents)	3749	infy_cb (EV_P_ ev_io *w, int revents)
2084	{	3750	{
2085	char buf [EV_INOTIFY_BUFSIZE];	3751	char buf [EV_INOTIFY_BUFSIZE];
2086	struct inotify_event *ev = (struct inotify_event *)buf;
2087	int ofs;	3752	int ofs;
2088	int len = read (fs_fd, buf, sizeof (buf));	3753	int len = read (fs_fd, buf, sizeof (buf));
2089		3754
2090	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3755	for (ofs = 0; ofs < len; )
		3756	{
		3757	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2091	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3758	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3759	ofs += sizeof (struct inotify_event) + ev->len;
		3760	}
2092	}	3761	}
2093		3762
2094	void inline_size	3763	inline_size void ecb_cold
		3764	ev_check_2625 (EV_P)
		3765	{
		3766	/* kernels < 2.6.25 are borked
		3767	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3768	*/
		3769	if (ev_linux_version () < 0x020619)
		3770	return;
		3771
		3772	fs_2625 = 1;
		3773	}
		3774
		3775	inline_size int
		3776	infy_newfd (void)
		3777	{
		3778	#if defined IN_CLOEXEC && defined IN_NONBLOCK
		3779	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3780	if (fd >= 0)
		3781	return fd;
		3782	#endif
		3783	return inotify_init ();
		3784	}
		3785
		3786	inline_size void
2095	infy_init (EV_P)	3787	infy_init (EV_P)
2096	{	3788	{
2097	if (fs_fd != -2)	3789	if (fs_fd != -2)
2098	return;	3790	return;
2099		3791
		3792	fs_fd = -1;
		3793
		3794	ev_check_2625 (EV_A);
		3795
2100	fs_fd = inotify_init ();	3796	fs_fd = infy_newfd ();
2101		3797
2102	if (fs_fd >= 0)	3798	if (fs_fd >= 0)
2103	{	3799	{
		3800	fd_intern (fs_fd);
2104	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3801	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2105	ev_set_priority (&fs_w, EV_MAXPRI);	3802	ev_set_priority (&fs_w, EV_MAXPRI);
2106	ev_io_start (EV_A_ &fs_w);	3803	ev_io_start (EV_A_ &fs_w);
		3804	ev_unref (EV_A);
2107	}	3805	}
2108	}	3806	}
2109		3807
2110	void inline_size	3808	inline_size void
2111	infy_fork (EV_P)	3809	infy_fork (EV_P)
2112	{	3810	{
2113	int slot;	3811	int slot;
2114		3812
2115	if (fs_fd < 0)	3813	if (fs_fd < 0)
2116	return;	3814	return;
2117		3815
		3816	ev_ref (EV_A);
		3817	ev_io_stop (EV_A_ &fs_w);
2118	close (fs_fd);	3818	close (fs_fd);
2119	fs_fd = inotify_init ();	3819	fs_fd = infy_newfd ();
2120		3820
		3821	if (fs_fd >= 0)
		3822	{
		3823	fd_intern (fs_fd);
		3824	ev_io_set (&fs_w, fs_fd, EV_READ);
		3825	ev_io_start (EV_A_ &fs_w);
		3826	ev_unref (EV_A);
		3827	}
		3828
2121	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3829	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2122	{	3830	{
2123	WL w_ = fs_hash [slot].head;	3831	WL w_ = fs_hash [slot].head;
2124	fs_hash [slot].head = 0;	3832	fs_hash [slot].head = 0;
2125		3833
2126	while (w_)	3834	while (w_)
…		…
2131	w->wd = -1;	3839	w->wd = -1;
2132		3840
2133	if (fs_fd >= 0)	3841	if (fs_fd >= 0)
2134	infy_add (EV_A_ w); /* re-add, no matter what */	3842	infy_add (EV_A_ w); /* re-add, no matter what */
2135	else	3843	else
		3844	{
		3845	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3846	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2136	ev_timer_start (EV_A_ &w->timer);	3847	ev_timer_again (EV_A_ &w->timer);
		3848	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3849	}
2137	}	3850	}
2138
2139	}	3851	}
2140	}	3852	}
2141		3853
		3854	#endif
		3855
		3856	#ifdef _WIN32
		3857	# define EV_LSTAT(p,b) _stati64 (p, b)
		3858	#else
		3859	# define EV_LSTAT(p,b) lstat (p, b)
2142	#endif	3860	#endif
2143		3861
2144	void	3862	void
2145	ev_stat_stat (EV_P_ ev_stat *w)	3863	ev_stat_stat (EV_P_ ev_stat *w) EV_THROW
2146	{	3864	{
2147	if (lstat (w->path, &w->attr) < 0)	3865	if (lstat (w->path, &w->attr) < 0)
2148	w->attr.st_nlink = 0;	3866	w->attr.st_nlink = 0;
2149	else if (!w->attr.st_nlink)	3867	else if (!w->attr.st_nlink)
2150	w->attr.st_nlink = 1;	3868	w->attr.st_nlink = 1;
…		…
2153	static void noinline	3871	static void noinline
2154	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3872	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2155	{	3873	{
2156	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3874	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2157		3875
2158	/* we copy this here each the time so that */	3876	ev_statdata prev = w->attr;
2159	/* prev has the old value when the callback gets invoked */
2160	w->prev = w->attr;
2161	ev_stat_stat (EV_A_ w);	3877	ev_stat_stat (EV_A_ w);
2162		3878
2163	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3879	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2164	if (	3880	if (
2165	w->prev.st_dev != w->attr.st_dev	3881	prev.st_dev != w->attr.st_dev
2166	|| w->prev.st_ino != w->attr.st_ino	3882	|| prev.st_ino != w->attr.st_ino
2167	|| w->prev.st_mode != w->attr.st_mode	3883	|| prev.st_mode != w->attr.st_mode
2168	|| w->prev.st_nlink != w->attr.st_nlink	3884	|| prev.st_nlink != w->attr.st_nlink
2169	|| w->prev.st_uid != w->attr.st_uid	3885	|| prev.st_uid != w->attr.st_uid
2170	|| w->prev.st_gid != w->attr.st_gid	3886	|| prev.st_gid != w->attr.st_gid
2171	|| w->prev.st_rdev != w->attr.st_rdev	3887	|| prev.st_rdev != w->attr.st_rdev
2172	|| w->prev.st_size != w->attr.st_size	3888	|| prev.st_size != w->attr.st_size
2173	|| w->prev.st_atime != w->attr.st_atime	3889	|| prev.st_atime != w->attr.st_atime
2174	|| w->prev.st_mtime != w->attr.st_mtime	3890	|| prev.st_mtime != w->attr.st_mtime
2175	|| w->prev.st_ctime != w->attr.st_ctime	3891	|| prev.st_ctime != w->attr.st_ctime
2176	) {	3892	) {
		3893	/* we only update w->prev on actual differences */
		3894	/* in case we test more often than invoke the callback, */
		3895	/* to ensure that prev is always different to attr */
		3896	w->prev = prev;
		3897
2177	#if EV_USE_INOTIFY	3898	#if EV_USE_INOTIFY
		3899	if (fs_fd >= 0)
		3900	{
2178	infy_del (EV_A_ w);	3901	infy_del (EV_A_ w);
2179	infy_add (EV_A_ w);	3902	infy_add (EV_A_ w);
2180	ev_stat_stat (EV_A_ w); /* avoid race... */	3903	ev_stat_stat (EV_A_ w); /* avoid race... */
		3904	}
2181	#endif	3905	#endif
2182		3906
2183	ev_feed_event (EV_A_ w, EV_STAT);	3907	ev_feed_event (EV_A_ w, EV_STAT);
2184	}	3908	}
2185	}	3909	}
2186		3910
2187	void	3911	void
2188	ev_stat_start (EV_P_ ev_stat *w)	3912	ev_stat_start (EV_P_ ev_stat *w) EV_THROW
2189	{	3913	{
2190	if (expect_false (ev_is_active (w)))	3914	if (expect_false (ev_is_active (w)))
2191	return;	3915	return;
2192		3916
2193	/* since we use memcmp, we need to clear any padding data etc. */
2194	memset (&w->prev, 0, sizeof (ev_statdata));
2195	memset (&w->attr, 0, sizeof (ev_statdata));
2196
2197	ev_stat_stat (EV_A_ w);	3917	ev_stat_stat (EV_A_ w);
2198		3918
		3919	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2199	if (w->interval < MIN_STAT_INTERVAL)	3920	w->interval = MIN_STAT_INTERVAL;
2200	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2201		3921
2202	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3922	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2203	ev_set_priority (&w->timer, ev_priority (w));	3923	ev_set_priority (&w->timer, ev_priority (w));
2204		3924
2205	#if EV_USE_INOTIFY	3925	#if EV_USE_INOTIFY
2206	infy_init (EV_A);	3926	infy_init (EV_A);
2207		3927
2208	if (fs_fd >= 0)	3928	if (fs_fd >= 0)
2209	infy_add (EV_A_ w);	3929	infy_add (EV_A_ w);
2210	else	3930	else
2211	#endif	3931	#endif
		3932	{
2212	ev_timer_start (EV_A_ &w->timer);	3933	ev_timer_again (EV_A_ &w->timer);
		3934	ev_unref (EV_A);
		3935	}
2213		3936
2214	ev_start (EV_A_ (W)w, 1);	3937	ev_start (EV_A_ (W)w, 1);
		3938
		3939	EV_FREQUENT_CHECK;
2215	}	3940	}
2216		3941
2217	void	3942	void
2218	ev_stat_stop (EV_P_ ev_stat *w)	3943	ev_stat_stop (EV_P_ ev_stat *w) EV_THROW
2219	{	3944	{
2220	clear_pending (EV_A_ (W)w);	3945	clear_pending (EV_A_ (W)w);
2221	if (expect_false (!ev_is_active (w)))	3946	if (expect_false (!ev_is_active (w)))
2222	return;	3947	return;
2223		3948
		3949	EV_FREQUENT_CHECK;
		3950
2224	#if EV_USE_INOTIFY	3951	#if EV_USE_INOTIFY
2225	infy_del (EV_A_ w);	3952	infy_del (EV_A_ w);
2226	#endif	3953	#endif
		3954
		3955	if (ev_is_active (&w->timer))
		3956	{
		3957	ev_ref (EV_A);
2227	ev_timer_stop (EV_A_ &w->timer);	3958	ev_timer_stop (EV_A_ &w->timer);
		3959	}
2228		3960
2229	ev_stop (EV_A_ (W)w);	3961	ev_stop (EV_A_ (W)w);
		3962
		3963	EV_FREQUENT_CHECK;
2230	}	3964	}
2231	#endif	3965	#endif
2232		3966
2233	#if EV_IDLE_ENABLE	3967	#if EV_IDLE_ENABLE
2234	void	3968	void
2235	ev_idle_start (EV_P_ ev_idle *w)	3969	ev_idle_start (EV_P_ ev_idle *w) EV_THROW
2236	{	3970	{
2237	if (expect_false (ev_is_active (w)))	3971	if (expect_false (ev_is_active (w)))
2238	return;	3972	return;
2239		3973
2240	pri_adjust (EV_A_ (W)w);	3974	pri_adjust (EV_A_ (W)w);
		3975
		3976	EV_FREQUENT_CHECK;
2241		3977
2242	{	3978	{
2243	int active = ++idlecnt [ABSPRI (w)];	3979	int active = ++idlecnt [ABSPRI (w)];
2244		3980
2245	++idleall;	3981	++idleall;
2246	ev_start (EV_A_ (W)w, active);	3982	ev_start (EV_A_ (W)w, active);
2247		3983
2248	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3984	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2249	idles [ABSPRI (w)][active - 1] = w;	3985	idles [ABSPRI (w)][active - 1] = w;
2250	}	3986	}
		3987
		3988	EV_FREQUENT_CHECK;
2251	}	3989	}
2252		3990
2253	void	3991	void
2254	ev_idle_stop (EV_P_ ev_idle *w)	3992	ev_idle_stop (EV_P_ ev_idle *w) EV_THROW
2255	{	3993	{
2256	clear_pending (EV_A_ (W)w);	3994	clear_pending (EV_A_ (W)w);
2257	if (expect_false (!ev_is_active (w)))	3995	if (expect_false (!ev_is_active (w)))
2258	return;	3996	return;
2259		3997
		3998	EV_FREQUENT_CHECK;
		3999
2260	{	4000	{
2261	int active = ((W)w)->active;	4001	int active = ev_active (w);
2262		4002
2263	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	4003	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2264	((W)idles [ABSPRI (w)][active - 1])->active = active;	4004	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2265		4005
2266	ev_stop (EV_A_ (W)w);	4006	ev_stop (EV_A_ (W)w);
2267	--idleall;	4007	--idleall;
2268	}	4008	}
2269	}
2270	#endif
2271		4009
		4010	EV_FREQUENT_CHECK;
		4011	}
		4012	#endif
		4013
		4014	#if EV_PREPARE_ENABLE
2272	void	4015	void
2273	ev_prepare_start (EV_P_ ev_prepare *w)	4016	ev_prepare_start (EV_P_ ev_prepare *w) EV_THROW
2274	{	4017	{
2275	if (expect_false (ev_is_active (w)))	4018	if (expect_false (ev_is_active (w)))
2276	return;	4019	return;
		4020
		4021	EV_FREQUENT_CHECK;
2277		4022
2278	ev_start (EV_A_ (W)w, ++preparecnt);	4023	ev_start (EV_A_ (W)w, ++preparecnt);
2279	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	4024	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2280	prepares [preparecnt - 1] = w;	4025	prepares [preparecnt - 1] = w;
		4026
		4027	EV_FREQUENT_CHECK;
2281	}	4028	}
2282		4029
2283	void	4030	void
2284	ev_prepare_stop (EV_P_ ev_prepare *w)	4031	ev_prepare_stop (EV_P_ ev_prepare *w) EV_THROW
2285	{	4032	{
2286	clear_pending (EV_A_ (W)w);	4033	clear_pending (EV_A_ (W)w);
2287	if (expect_false (!ev_is_active (w)))	4034	if (expect_false (!ev_is_active (w)))
2288	return;	4035	return;
2289		4036
		4037	EV_FREQUENT_CHECK;
		4038
2290	{	4039	{
2291	int active = ((W)w)->active;	4040	int active = ev_active (w);
		4041
2292	prepares [active - 1] = prepares [--preparecnt];	4042	prepares [active - 1] = prepares [--preparecnt];
2293	((W)prepares [active - 1])->active = active;	4043	ev_active (prepares [active - 1]) = active;
2294	}	4044	}
2295		4045
2296	ev_stop (EV_A_ (W)w);	4046	ev_stop (EV_A_ (W)w);
2297	}
2298		4047
		4048	EV_FREQUENT_CHECK;
		4049	}
		4050	#endif
		4051
		4052	#if EV_CHECK_ENABLE
2299	void	4053	void
2300	ev_check_start (EV_P_ ev_check *w)	4054	ev_check_start (EV_P_ ev_check *w) EV_THROW
2301	{	4055	{
2302	if (expect_false (ev_is_active (w)))	4056	if (expect_false (ev_is_active (w)))
2303	return;	4057	return;
		4058
		4059	EV_FREQUENT_CHECK;
2304		4060
2305	ev_start (EV_A_ (W)w, ++checkcnt);	4061	ev_start (EV_A_ (W)w, ++checkcnt);
2306	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	4062	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2307	checks [checkcnt - 1] = w;	4063	checks [checkcnt - 1] = w;
		4064
		4065	EV_FREQUENT_CHECK;
2308	}	4066	}
2309		4067
2310	void	4068	void
2311	ev_check_stop (EV_P_ ev_check *w)	4069	ev_check_stop (EV_P_ ev_check *w) EV_THROW
2312	{	4070	{
2313	clear_pending (EV_A_ (W)w);	4071	clear_pending (EV_A_ (W)w);
2314	if (expect_false (!ev_is_active (w)))	4072	if (expect_false (!ev_is_active (w)))
2315	return;	4073	return;
2316		4074
		4075	EV_FREQUENT_CHECK;
		4076
2317	{	4077	{
2318	int active = ((W)w)->active;	4078	int active = ev_active (w);
		4079
2319	checks [active - 1] = checks [--checkcnt];	4080	checks [active - 1] = checks [--checkcnt];
2320	((W)checks [active - 1])->active = active;	4081	ev_active (checks [active - 1]) = active;
2321	}	4082	}
2322		4083
2323	ev_stop (EV_A_ (W)w);	4084	ev_stop (EV_A_ (W)w);
		4085
		4086	EV_FREQUENT_CHECK;
2324	}	4087	}
		4088	#endif
2325		4089
2326	#if EV_EMBED_ENABLE	4090	#if EV_EMBED_ENABLE
2327	void noinline	4091	void noinline
2328	ev_embed_sweep (EV_P_ ev_embed *w)	4092	ev_embed_sweep (EV_P_ ev_embed *w) EV_THROW
2329	{	4093	{
2330	ev_loop (w->other, EVLOOP_NONBLOCK);	4094	ev_run (w->other, EVRUN_NOWAIT);
2331	}	4095	}
2332		4096
2333	static void	4097	static void
2334	embed_io_cb (EV_P_ ev_io *io, int revents)	4098	embed_io_cb (EV_P_ ev_io *io, int revents)
2335	{	4099	{
2336	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	4100	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2337		4101
2338	if (ev_cb (w))	4102	if (ev_cb (w))
2339	ev_feed_event (EV_A_ (W)w, EV_EMBED);	4103	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2340	else	4104	else
2341	ev_loop (w->other, EVLOOP_NONBLOCK);	4105	ev_run (w->other, EVRUN_NOWAIT);
2342	}	4106	}
2343		4107
2344	static void	4108	static void
2345	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	4109	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2346	{	4110	{
2347	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	4111	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2348		4112
2349	{	4113	{
2350	struct ev_loop *loop = w->other;	4114	EV_P = w->other;
2351		4115
2352	while (fdchangecnt)	4116	while (fdchangecnt)
2353	{	4117	{
2354	fd_reify (EV_A);	4118	fd_reify (EV_A);
2355	ev_loop (EV_A_ EVLOOP_NONBLOCK);	4119	ev_run (EV_A_ EVRUN_NOWAIT);
2356	}	4120	}
2357	}	4121	}
		4122	}
		4123
		4124	static void
		4125	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		4126	{
		4127	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		4128
		4129	ev_embed_stop (EV_A_ w);
		4130
		4131	{
		4132	EV_P = w->other;
		4133
		4134	ev_loop_fork (EV_A);
		4135	ev_run (EV_A_ EVRUN_NOWAIT);
		4136	}
		4137
		4138	ev_embed_start (EV_A_ w);
2358	}	4139	}
2359		4140
2360	#if 0	4141	#if 0
2361	static void	4142	static void
2362	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	4143	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2364	ev_idle_stop (EV_A_ idle);	4145	ev_idle_stop (EV_A_ idle);
2365	}	4146	}
2366	#endif	4147	#endif
2367		4148
2368	void	4149	void
2369	ev_embed_start (EV_P_ ev_embed *w)	4150	ev_embed_start (EV_P_ ev_embed *w) EV_THROW
2370	{	4151	{
2371	if (expect_false (ev_is_active (w)))	4152	if (expect_false (ev_is_active (w)))
2372	return;	4153	return;
2373		4154
2374	{	4155	{
2375	struct ev_loop *loop = w->other;	4156	EV_P = w->other;
2376	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	4157	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2377	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	4158	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2378	}	4159	}
		4160
		4161	EV_FREQUENT_CHECK;
2379		4162
2380	ev_set_priority (&w->io, ev_priority (w));	4163	ev_set_priority (&w->io, ev_priority (w));
2381	ev_io_start (EV_A_ &w->io);	4164	ev_io_start (EV_A_ &w->io);
2382		4165
2383	ev_prepare_init (&w->prepare, embed_prepare_cb);	4166	ev_prepare_init (&w->prepare, embed_prepare_cb);
2384	ev_set_priority (&w->prepare, EV_MINPRI);	4167	ev_set_priority (&w->prepare, EV_MINPRI);
2385	ev_prepare_start (EV_A_ &w->prepare);	4168	ev_prepare_start (EV_A_ &w->prepare);
2386		4169
		4170	ev_fork_init (&w->fork, embed_fork_cb);
		4171	ev_fork_start (EV_A_ &w->fork);
		4172
2387	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	4173	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2388		4174
2389	ev_start (EV_A_ (W)w, 1);	4175	ev_start (EV_A_ (W)w, 1);
		4176
		4177	EV_FREQUENT_CHECK;
2390	}	4178	}
2391		4179
2392	void	4180	void
2393	ev_embed_stop (EV_P_ ev_embed *w)	4181	ev_embed_stop (EV_P_ ev_embed *w) EV_THROW
2394	{	4182	{
2395	clear_pending (EV_A_ (W)w);	4183	clear_pending (EV_A_ (W)w);
2396	if (expect_false (!ev_is_active (w)))	4184	if (expect_false (!ev_is_active (w)))
2397	return;	4185	return;
2398		4186
		4187	EV_FREQUENT_CHECK;
		4188
2399	ev_io_stop (EV_A_ &w->io);	4189	ev_io_stop (EV_A_ &w->io);
2400	ev_prepare_stop (EV_A_ &w->prepare);	4190	ev_prepare_stop (EV_A_ &w->prepare);
		4191	ev_fork_stop (EV_A_ &w->fork);
2401		4192
2402	ev_stop (EV_A_ (W)w);	4193	ev_stop (EV_A_ (W)w);
		4194
		4195	EV_FREQUENT_CHECK;
2403	}	4196	}
2404	#endif	4197	#endif
2405		4198
2406	#if EV_FORK_ENABLE	4199	#if EV_FORK_ENABLE
2407	void	4200	void
2408	ev_fork_start (EV_P_ ev_fork *w)	4201	ev_fork_start (EV_P_ ev_fork *w) EV_THROW
2409	{	4202	{
2410	if (expect_false (ev_is_active (w)))	4203	if (expect_false (ev_is_active (w)))
2411	return;	4204	return;
		4205
		4206	EV_FREQUENT_CHECK;
2412		4207
2413	ev_start (EV_A_ (W)w, ++forkcnt);	4208	ev_start (EV_A_ (W)w, ++forkcnt);
2414	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	4209	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2415	forks [forkcnt - 1] = w;	4210	forks [forkcnt - 1] = w;
		4211
		4212	EV_FREQUENT_CHECK;
2416	}	4213	}
2417		4214
2418	void	4215	void
2419	ev_fork_stop (EV_P_ ev_fork *w)	4216	ev_fork_stop (EV_P_ ev_fork *w) EV_THROW
2420	{	4217	{
2421	clear_pending (EV_A_ (W)w);	4218	clear_pending (EV_A_ (W)w);
2422	if (expect_false (!ev_is_active (w)))	4219	if (expect_false (!ev_is_active (w)))
2423	return;	4220	return;
2424		4221
		4222	EV_FREQUENT_CHECK;
		4223
2425	{	4224	{
2426	int active = ((W)w)->active;	4225	int active = ev_active (w);
		4226
2427	forks [active - 1] = forks [--forkcnt];	4227	forks [active - 1] = forks [--forkcnt];
2428	((W)forks [active - 1])->active = active;	4228	ev_active (forks [active - 1]) = active;
2429	}	4229	}
2430		4230
2431	ev_stop (EV_A_ (W)w);	4231	ev_stop (EV_A_ (W)w);
		4232
		4233	EV_FREQUENT_CHECK;
		4234	}
		4235	#endif
		4236
		4237	#if EV_CLEANUP_ENABLE
		4238	void
		4239	ev_cleanup_start (EV_P_ ev_cleanup *w) EV_THROW
		4240	{
		4241	if (expect_false (ev_is_active (w)))
		4242	return;
		4243
		4244	EV_FREQUENT_CHECK;
		4245
		4246	ev_start (EV_A_ (W)w, ++cleanupcnt);
		4247	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		4248	cleanups [cleanupcnt - 1] = w;
		4249
		4250	/* cleanup watchers should never keep a refcount on the loop */
		4251	ev_unref (EV_A);
		4252	EV_FREQUENT_CHECK;
		4253	}
		4254
		4255	void
		4256	ev_cleanup_stop (EV_P_ ev_cleanup *w) EV_THROW
		4257	{
		4258	clear_pending (EV_A_ (W)w);
		4259	if (expect_false (!ev_is_active (w)))
		4260	return;
		4261
		4262	EV_FREQUENT_CHECK;
		4263	ev_ref (EV_A);
		4264
		4265	{
		4266	int active = ev_active (w);
		4267
		4268	cleanups [active - 1] = cleanups [--cleanupcnt];
		4269	ev_active (cleanups [active - 1]) = active;
		4270	}
		4271
		4272	ev_stop (EV_A_ (W)w);
		4273
		4274	EV_FREQUENT_CHECK;
2432	}	4275	}
2433	#endif	4276	#endif
2434		4277
2435	#if EV_ASYNC_ENABLE	4278	#if EV_ASYNC_ENABLE
2436	void	4279	void
2437	ev_async_start (EV_P_ ev_async *w)	4280	ev_async_start (EV_P_ ev_async *w) EV_THROW
2438	{	4281	{
2439	if (expect_false (ev_is_active (w)))	4282	if (expect_false (ev_is_active (w)))
2440	return;	4283	return;
2441		4284
		4285	w->sent = 0;
		4286
2442	evpipe_init (EV_A);	4287	evpipe_init (EV_A);
		4288
		4289	EV_FREQUENT_CHECK;
2443		4290
2444	ev_start (EV_A_ (W)w, ++asynccnt);	4291	ev_start (EV_A_ (W)w, ++asynccnt);
2445	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	4292	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2446	asyncs [asynccnt - 1] = w;	4293	asyncs [asynccnt - 1] = w;
		4294
		4295	EV_FREQUENT_CHECK;
2447	}	4296	}
2448		4297
2449	void	4298	void
2450	ev_async_stop (EV_P_ ev_async *w)	4299	ev_async_stop (EV_P_ ev_async *w) EV_THROW
2451	{	4300	{
2452	clear_pending (EV_A_ (W)w);	4301	clear_pending (EV_A_ (W)w);
2453	if (expect_false (!ev_is_active (w)))	4302	if (expect_false (!ev_is_active (w)))
2454	return;	4303	return;
2455		4304
		4305	EV_FREQUENT_CHECK;
		4306
2456	{	4307	{
2457	int active = ((W)w)->active;	4308	int active = ev_active (w);
		4309
2458	asyncs [active - 1] = asyncs [--asynccnt];	4310	asyncs [active - 1] = asyncs [--asynccnt];
2459	((W)asyncs [active - 1])->active = active;	4311	ev_active (asyncs [active - 1]) = active;
2460	}	4312	}
2461		4313
2462	ev_stop (EV_A_ (W)w);	4314	ev_stop (EV_A_ (W)w);
		4315
		4316	EV_FREQUENT_CHECK;
2463	}	4317	}
2464		4318
2465	void	4319	void
2466	ev_async_send (EV_P_ ev_async *w)	4320	ev_async_send (EV_P_ ev_async *w) EV_THROW
2467	{	4321	{
2468	w->sent = 1;	4322	w->sent = 1;
2469	evpipe_write (EV_A_ 0, 1);	4323	evpipe_write (EV_A_ &async_pending);
2470	}	4324	}
2471	#endif	4325	#endif
2472		4326
2473	/*****************************************************************************/	4327	/*****************************************************************************/
2474		4328
…		…
2484	once_cb (EV_P_ struct ev_once *once, int revents)	4338	once_cb (EV_P_ struct ev_once *once, int revents)
2485	{	4339	{
2486	void (*cb)(int revents, void *arg) = once->cb;	4340	void (*cb)(int revents, void *arg) = once->cb;
2487	void *arg = once->arg;	4341	void *arg = once->arg;
2488		4342
2489	ev_io_stop (EV_A_ &once->io);	4343	ev_io_stop (EV_A_ &once->io);
2490	ev_timer_stop (EV_A_ &once->to);	4344	ev_timer_stop (EV_A_ &once->to);
2491	ev_free (once);	4345	ev_free (once);
2492		4346
2493	cb (revents, arg);	4347	cb (revents, arg);
2494	}	4348	}
2495		4349
2496	static void	4350	static void
2497	once_cb_io (EV_P_ ev_io *w, int revents)	4351	once_cb_io (EV_P_ ev_io *w, int revents)
2498	{	4352	{
2499	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	4353	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		4354
		4355	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2500	}	4356	}
2501		4357
2502	static void	4358	static void
2503	once_cb_to (EV_P_ ev_timer *w, int revents)	4359	once_cb_to (EV_P_ ev_timer *w, int revents)
2504	{	4360	{
2505	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	4361	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		4362
		4363	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2506	}	4364	}
2507		4365
2508	void	4366	void
2509	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	4367	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg) EV_THROW
2510	{	4368	{
2511	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	4369	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2512		4370
2513	if (expect_false (!once))	4371	if (expect_false (!once))
2514	{	4372	{
2515	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	4373	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2516	return;	4374	return;
2517	}	4375	}
2518		4376
2519	once->cb = cb;	4377	once->cb = cb;
2520	once->arg = arg;	4378	once->arg = arg;
…		…
2532	ev_timer_set (&once->to, timeout, 0.);	4390	ev_timer_set (&once->to, timeout, 0.);
2533	ev_timer_start (EV_A_ &once->to);	4391	ev_timer_start (EV_A_ &once->to);
2534	}	4392	}
2535	}	4393	}
2536		4394
		4395	/*****************************************************************************/
		4396
		4397	#if EV_WALK_ENABLE
		4398	void ecb_cold
		4399	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w)) EV_THROW
		4400	{
		4401	int i, j;
		4402	ev_watcher_list *wl, *wn;
		4403
		4404	if (types & (EV_IO | EV_EMBED))
		4405	for (i = 0; i < anfdmax; ++i)
		4406	for (wl = anfds [i].head; wl; )
		4407	{
		4408	wn = wl->next;
		4409
		4410	#if EV_EMBED_ENABLE
		4411	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		4412	{
		4413	if (types & EV_EMBED)
		4414	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		4415	}
		4416	else
		4417	#endif
		4418	#if EV_USE_INOTIFY
		4419	if (ev_cb ((ev_io *)wl) == infy_cb)
		4420	;
		4421	else
		4422	#endif
		4423	if ((ev_io *)wl != &pipe_w)
		4424	if (types & EV_IO)
		4425	cb (EV_A_ EV_IO, wl);
		4426
		4427	wl = wn;
		4428	}
		4429
		4430	if (types & (EV_TIMER | EV_STAT))
		4431	for (i = timercnt + HEAP0; i-- > HEAP0; )
		4432	#if EV_STAT_ENABLE
		4433	/*TODO: timer is not always active*/
		4434	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		4435	{
		4436	if (types & EV_STAT)
		4437	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		4438	}
		4439	else
		4440	#endif
		4441	if (types & EV_TIMER)
		4442	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		4443
		4444	#if EV_PERIODIC_ENABLE
		4445	if (types & EV_PERIODIC)
		4446	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		4447	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		4448	#endif
		4449
		4450	#if EV_IDLE_ENABLE
		4451	if (types & EV_IDLE)
		4452	for (j = NUMPRI; j--; )
		4453	for (i = idlecnt [j]; i--; )
		4454	cb (EV_A_ EV_IDLE, idles [j][i]);
		4455	#endif
		4456
		4457	#if EV_FORK_ENABLE
		4458	if (types & EV_FORK)
		4459	for (i = forkcnt; i--; )
		4460	if (ev_cb (forks [i]) != embed_fork_cb)
		4461	cb (EV_A_ EV_FORK, forks [i]);
		4462	#endif
		4463
		4464	#if EV_ASYNC_ENABLE
		4465	if (types & EV_ASYNC)
		4466	for (i = asynccnt; i--; )
		4467	cb (EV_A_ EV_ASYNC, asyncs [i]);
		4468	#endif
		4469
		4470	#if EV_PREPARE_ENABLE
		4471	if (types & EV_PREPARE)
		4472	for (i = preparecnt; i--; )
		4473	# if EV_EMBED_ENABLE
		4474	if (ev_cb (prepares [i]) != embed_prepare_cb)
		4475	# endif
		4476	cb (EV_A_ EV_PREPARE, prepares [i]);
		4477	#endif
		4478
		4479	#if EV_CHECK_ENABLE
		4480	if (types & EV_CHECK)
		4481	for (i = checkcnt; i--; )
		4482	cb (EV_A_ EV_CHECK, checks [i]);
		4483	#endif
		4484
		4485	#if EV_SIGNAL_ENABLE
		4486	if (types & EV_SIGNAL)
		4487	for (i = 0; i < EV_NSIG - 1; ++i)
		4488	for (wl = signals [i].head; wl; )
		4489	{
		4490	wn = wl->next;
		4491	cb (EV_A_ EV_SIGNAL, wl);
		4492	wl = wn;
		4493	}
		4494	#endif
		4495
		4496	#if EV_CHILD_ENABLE
		4497	if (types & EV_CHILD)
		4498	for (i = (EV_PID_HASHSIZE); i--; )
		4499	for (wl = childs [i]; wl; )
		4500	{
		4501	wn = wl->next;
		4502	cb (EV_A_ EV_CHILD, wl);
		4503	wl = wn;
		4504	}
		4505	#endif
		4506	/* EV_STAT 0x00001000 /* stat data changed */
		4507	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		4508	}
		4509	#endif
		4510
2537	#if EV_MULTIPLICITY	4511	#if EV_MULTIPLICITY
2538	#include "ev_wrap.h"	4512	#include "ev_wrap.h"
2539	#endif	4513	#endif
2540		4514
2541	#ifdef __cplusplus
2542	}
2543	#endif
2544

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