ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.212 by root, Tue Feb 19 19:01:13 2008 UTC vs.
Revision 1.384 by root, Wed Jul 20 00:58:45 2011 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007,2008 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010,2011 Marc Alexander Lehmann <libev@schmorp.de>
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without modifica-	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* tion, are permitted provided that the following conditions are met:	8	* tion, are permitted provided that the following conditions are met:
9	*	9	*
10	* 1. Redistributions of source code must retain the above copyright notice,	10	* 1. Redistributions of source code must retain the above copyright notice,
11	* this list of conditions and the following disclaimer.	11	* this list of conditions and the following disclaimer.
12	*	12	*
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-	18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO	19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-	20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,	21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
…		…
35	* and other provisions required by the GPL. If you do not delete the	35	* and other provisions required by the GPL. If you do not delete the
36	* provisions above, a recipient may use your version of this file under	36	* provisions above, a recipient may use your version of this file under
37	* either the BSD or the GPL.	37	* either the BSD or the GPL.
38	*/	38	*/
39		39
40	#ifdef __cplusplus	40	/* this big block deduces configuration from config.h */
41	extern "C" {
42	#endif
43
44	#ifndef EV_STANDALONE	41	#ifndef EV_STANDALONE
45	# ifdef EV_CONFIG_H	42	# ifdef EV_CONFIG_H
46	# include EV_CONFIG_H	43	# include EV_CONFIG_H
47	# else	44	# else
48	# include "config.h"	45	# include "config.h"
49	# endif	46	# endif
50		47
		48	#if HAVE_FLOOR
		49	# ifndef EV_USE_FLOOR
		50	# define EV_USE_FLOOR 1
		51	# endif
		52	#endif
		53
		54	# if HAVE_CLOCK_SYSCALL
		55	# ifndef EV_USE_CLOCK_SYSCALL
		56	# define EV_USE_CLOCK_SYSCALL 1
		57	# ifndef EV_USE_REALTIME
		58	# define EV_USE_REALTIME 0
		59	# endif
		60	# ifndef EV_USE_MONOTONIC
		61	# define EV_USE_MONOTONIC 1
		62	# endif
		63	# endif
		64	# elif !defined(EV_USE_CLOCK_SYSCALL)
		65	# define EV_USE_CLOCK_SYSCALL 0
		66	# endif
		67
51	# if HAVE_CLOCK_GETTIME	68	# if HAVE_CLOCK_GETTIME
52	# ifndef EV_USE_MONOTONIC	69	# ifndef EV_USE_MONOTONIC
53	# define EV_USE_MONOTONIC 1	70	# define EV_USE_MONOTONIC 1
54	# endif	71	# endif
55	# ifndef EV_USE_REALTIME	72	# ifndef EV_USE_REALTIME
56	# define EV_USE_REALTIME 1	73	# define EV_USE_REALTIME 0
57	# endif	74	# endif
58	# else	75	# else
59	# ifndef EV_USE_MONOTONIC	76	# ifndef EV_USE_MONOTONIC
60	# define EV_USE_MONOTONIC 0	77	# define EV_USE_MONOTONIC 0
61	# endif	78	# endif
62	# ifndef EV_USE_REALTIME	79	# ifndef EV_USE_REALTIME
63	# define EV_USE_REALTIME 0	80	# define EV_USE_REALTIME 0
64	# endif	81	# endif
65	# endif	82	# endif
66		83
		84	# if HAVE_NANOSLEEP
67	# ifndef EV_USE_NANOSLEEP	85	# ifndef EV_USE_NANOSLEEP
68	# if HAVE_NANOSLEEP
69	# define EV_USE_NANOSLEEP 1	86	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		87	# endif
70	# else	88	# else
		89	# undef EV_USE_NANOSLEEP
71	# define EV_USE_NANOSLEEP 0	90	# define EV_USE_NANOSLEEP 0
		91	# endif
		92
		93	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		94	# ifndef EV_USE_SELECT
		95	# define EV_USE_SELECT EV_FEATURE_BACKENDS
72	# endif	96	# endif
		97	# else
		98	# undef EV_USE_SELECT
		99	# define EV_USE_SELECT 0
73	# endif	100	# endif
74		101
		102	# if HAVE_POLL && HAVE_POLL_H
75	# ifndef EV_USE_SELECT	103	# ifndef EV_USE_POLL
76	# if HAVE_SELECT && HAVE_SYS_SELECT_H	104	# define EV_USE_POLL EV_FEATURE_BACKENDS
77	# define EV_USE_SELECT 1
78	# else
79	# define EV_USE_SELECT 0
80	# endif	105	# endif
81	# endif
82
83	# ifndef EV_USE_POLL
84	# if HAVE_POLL && HAVE_POLL_H
85	# define EV_USE_POLL 1
86	# else	106	# else
		107	# undef EV_USE_POLL
87	# define EV_USE_POLL 0	108	# define EV_USE_POLL 0
88	# endif
89	# endif	109	# endif
90		110
91	# ifndef EV_USE_EPOLL
92	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	111	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
93	# define EV_USE_EPOLL 1	112	# ifndef EV_USE_EPOLL
94	# else	113	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
95	# define EV_USE_EPOLL 0
96	# endif	114	# endif
		115	# else
		116	# undef EV_USE_EPOLL
		117	# define EV_USE_EPOLL 0
97	# endif	118	# endif
98		119
		120	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H
99	# ifndef EV_USE_KQUEUE	121	# ifndef EV_USE_KQUEUE
100	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	122	# define EV_USE_KQUEUE EV_FEATURE_BACKENDS
101	# define EV_USE_KQUEUE 1
102	# else
103	# define EV_USE_KQUEUE 0
104	# endif	123	# endif
		124	# else
		125	# undef EV_USE_KQUEUE
		126	# define EV_USE_KQUEUE 0
105	# endif	127	# endif
106		128
107	# ifndef EV_USE_PORT
108	# if HAVE_PORT_H && HAVE_PORT_CREATE	129	# if HAVE_PORT_H && HAVE_PORT_CREATE
109	# define EV_USE_PORT 1	130	# ifndef EV_USE_PORT
110	# else	131	# define EV_USE_PORT EV_FEATURE_BACKENDS
111	# define EV_USE_PORT 0
112	# endif	132	# endif
		133	# else
		134	# undef EV_USE_PORT
		135	# define EV_USE_PORT 0
113	# endif	136	# endif
114		137
115	# ifndef EV_USE_INOTIFY
116	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H	138	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
117	# define EV_USE_INOTIFY 1	139	# ifndef EV_USE_INOTIFY
118	# else
119	# define EV_USE_INOTIFY 0	140	# define EV_USE_INOTIFY EV_FEATURE_OS
120	# endif	141	# endif
		142	# else
		143	# undef EV_USE_INOTIFY
		144	# define EV_USE_INOTIFY 0
121	# endif	145	# endif
122		146
		147	# if HAVE_SIGNALFD && HAVE_SYS_SIGNALFD_H
		148	# ifndef EV_USE_SIGNALFD
		149	# define EV_USE_SIGNALFD EV_FEATURE_OS
		150	# endif
		151	# else
		152	# undef EV_USE_SIGNALFD
		153	# define EV_USE_SIGNALFD 0
123	#endif	154	# endif
124		155
125	#include <math.h>	156	# if HAVE_EVENTFD
		157	# ifndef EV_USE_EVENTFD
		158	# define EV_USE_EVENTFD EV_FEATURE_OS
		159	# endif
		160	# else
		161	# undef EV_USE_EVENTFD
		162	# define EV_USE_EVENTFD 0
		163	# endif
		164
		165	#endif
		166
126	#include <stdlib.h>	167	#include <stdlib.h>
		168	#include <string.h>
127	#include <fcntl.h>	169	#include <fcntl.h>
128	#include <stddef.h>	170	#include <stddef.h>
129		171
130	#include <stdio.h>	172	#include <stdio.h>
131		173
132	#include <assert.h>	174	#include <assert.h>
133	#include <errno.h>	175	#include <errno.h>
134	#include <sys/types.h>	176	#include <sys/types.h>
135	#include <time.h>	177	#include <time.h>
		178	#include <limits.h>
136		179
137	#include <signal.h>	180	#include <signal.h>
138		181
139	#ifdef EV_H	182	#ifdef EV_H
140	# include EV_H	183	# include EV_H
141	#else	184	#else
142	# include "ev.h"	185	# include "ev.h"
143	#endif	186	#endif
		187
		188	EV_CPP(extern "C" {)
144		189
145	#ifndef _WIN32	190	#ifndef _WIN32
146	# include <sys/time.h>	191	# include <sys/time.h>
147	# include <sys/wait.h>	192	# include <sys/wait.h>
148	# include <unistd.h>	193	# include <unistd.h>
149	#else	194	#else
		195	# include <io.h>
150	# define WIN32_LEAN_AND_MEAN	196	# define WIN32_LEAN_AND_MEAN
151	# include <windows.h>	197	# include <windows.h>
152	# ifndef EV_SELECT_IS_WINSOCKET	198	# ifndef EV_SELECT_IS_WINSOCKET
153	# define EV_SELECT_IS_WINSOCKET 1	199	# define EV_SELECT_IS_WINSOCKET 1
154	# endif	200	# endif
		201	# undef EV_AVOID_STDIO
		202	#endif
		203
		204	/* OS X, in its infinite idiocy, actually HARDCODES
		205	* a limit of 1024 into their select. Where people have brains,
		206	* OS X engineers apparently have a vacuum. Or maybe they were
		207	* ordered to have a vacuum, or they do anything for money.
		208	* This might help. Or not.
		209	*/
		210	#define _DARWIN_UNLIMITED_SELECT 1
		211
		212	/* this block tries to deduce configuration from header-defined symbols and defaults */
		213
		214	/* try to deduce the maximum number of signals on this platform */
		215	#if defined (EV_NSIG)
		216	/* use what's provided */
		217	#elif defined (NSIG)
		218	# define EV_NSIG (NSIG)
		219	#elif defined(_NSIG)
		220	# define EV_NSIG (_NSIG)
		221	#elif defined (SIGMAX)
		222	# define EV_NSIG (SIGMAX+1)
		223	#elif defined (SIG_MAX)
		224	# define EV_NSIG (SIG_MAX+1)
		225	#elif defined (_SIG_MAX)
		226	# define EV_NSIG (_SIG_MAX+1)
		227	#elif defined (MAXSIG)
		228	# define EV_NSIG (MAXSIG+1)
		229	#elif defined (MAX_SIG)
		230	# define EV_NSIG (MAX_SIG+1)
		231	#elif defined (SIGARRAYSIZE)
		232	# define EV_NSIG (SIGARRAYSIZE) /* Assume ary[SIGARRAYSIZE] */
		233	#elif defined (_sys_nsig)
		234	# define EV_NSIG (_sys_nsig) /* Solaris 2.5 */
		235	#else
		236	# error "unable to find value for NSIG, please report"
		237	/* to make it compile regardless, just remove the above line, */
		238	/* but consider reporting it, too! :) */
		239	# define EV_NSIG 65
		240	#endif
		241
		242	#ifndef EV_USE_FLOOR
		243	# define EV_USE_FLOOR 0
		244	#endif
		245
		246	#ifndef EV_USE_CLOCK_SYSCALL
		247	# if __linux && __GLIBC__ >= 2
		248	# define EV_USE_CLOCK_SYSCALL EV_FEATURE_OS
		249	# else
		250	# define EV_USE_CLOCK_SYSCALL 0
155	#endif	251	# endif
156		252	#endif
157	/**/
158		253
159	#ifndef EV_USE_MONOTONIC	254	#ifndef EV_USE_MONOTONIC
		255	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
		256	# define EV_USE_MONOTONIC EV_FEATURE_OS
		257	# else
160	# define EV_USE_MONOTONIC 0	258	# define EV_USE_MONOTONIC 0
		259	# endif
161	#endif	260	#endif
162		261
163	#ifndef EV_USE_REALTIME	262	#ifndef EV_USE_REALTIME
164	# define EV_USE_REALTIME 0	263	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
165	#endif	264	#endif
166		265
167	#ifndef EV_USE_NANOSLEEP	266	#ifndef EV_USE_NANOSLEEP
		267	# if _POSIX_C_SOURCE >= 199309L
		268	# define EV_USE_NANOSLEEP EV_FEATURE_OS
		269	# else
168	# define EV_USE_NANOSLEEP 0	270	# define EV_USE_NANOSLEEP 0
		271	# endif
169	#endif	272	#endif
170		273
171	#ifndef EV_USE_SELECT	274	#ifndef EV_USE_SELECT
172	# define EV_USE_SELECT 1	275	# define EV_USE_SELECT EV_FEATURE_BACKENDS
173	#endif	276	#endif
174		277
175	#ifndef EV_USE_POLL	278	#ifndef EV_USE_POLL
176	# ifdef _WIN32	279	# ifdef _WIN32
177	# define EV_USE_POLL 0	280	# define EV_USE_POLL 0
178	# else	281	# else
179	# define EV_USE_POLL 1	282	# define EV_USE_POLL EV_FEATURE_BACKENDS
180	# endif	283	# endif
181	#endif	284	#endif
182		285
183	#ifndef EV_USE_EPOLL	286	#ifndef EV_USE_EPOLL
		287	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		288	# define EV_USE_EPOLL EV_FEATURE_BACKENDS
		289	# else
184	# define EV_USE_EPOLL 0	290	# define EV_USE_EPOLL 0
		291	# endif
185	#endif	292	#endif
186		293
187	#ifndef EV_USE_KQUEUE	294	#ifndef EV_USE_KQUEUE
188	# define EV_USE_KQUEUE 0	295	# define EV_USE_KQUEUE 0
189	#endif	296	#endif
…		…
191	#ifndef EV_USE_PORT	298	#ifndef EV_USE_PORT
192	# define EV_USE_PORT 0	299	# define EV_USE_PORT 0
193	#endif	300	#endif
194		301
195	#ifndef EV_USE_INOTIFY	302	#ifndef EV_USE_INOTIFY
		303	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		304	# define EV_USE_INOTIFY EV_FEATURE_OS
		305	# else
196	# define EV_USE_INOTIFY 0	306	# define EV_USE_INOTIFY 0
		307	# endif
197	#endif	308	#endif
198		309
199	#ifndef EV_PID_HASHSIZE	310	#ifndef EV_PID_HASHSIZE
200	# if EV_MINIMAL	311	# define EV_PID_HASHSIZE EV_FEATURE_DATA ? 16 : 1
201	# define EV_PID_HASHSIZE 1	312	#endif
		313
		314	#ifndef EV_INOTIFY_HASHSIZE
		315	# define EV_INOTIFY_HASHSIZE EV_FEATURE_DATA ? 16 : 1
		316	#endif
		317
		318	#ifndef EV_USE_EVENTFD
		319	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		320	# define EV_USE_EVENTFD EV_FEATURE_OS
202	# else	321	# else
203	# define EV_PID_HASHSIZE 16	322	# define EV_USE_EVENTFD 0
204	# endif	323	# endif
205	#endif	324	#endif
206		325
207	#ifndef EV_INOTIFY_HASHSIZE	326	#ifndef EV_USE_SIGNALFD
208	# if EV_MINIMAL	327	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
209	# define EV_INOTIFY_HASHSIZE 1	328	# define EV_USE_SIGNALFD EV_FEATURE_OS
210	# else	329	# else
211	# define EV_INOTIFY_HASHSIZE 16	330	# define EV_USE_SIGNALFD 0
212	# endif	331	# endif
213	#endif	332	#endif
214		333
215	/**/	334	#if 0 /* debugging */
		335	# define EV_VERIFY 3
		336	# define EV_USE_4HEAP 1
		337	# define EV_HEAP_CACHE_AT 1
		338	#endif
		339
		340	#ifndef EV_VERIFY
		341	# define EV_VERIFY (EV_FEATURE_API ? 1 : 0)
		342	#endif
		343
		344	#ifndef EV_USE_4HEAP
		345	# define EV_USE_4HEAP EV_FEATURE_DATA
		346	#endif
		347
		348	#ifndef EV_HEAP_CACHE_AT
		349	# define EV_HEAP_CACHE_AT EV_FEATURE_DATA
		350	#endif
		351
		352	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		353	/* which makes programs even slower. might work on other unices, too. */
		354	#if EV_USE_CLOCK_SYSCALL
		355	# include <syscall.h>
		356	# ifdef SYS_clock_gettime
		357	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		358	# undef EV_USE_MONOTONIC
		359	# define EV_USE_MONOTONIC 1
		360	# else
		361	# undef EV_USE_CLOCK_SYSCALL
		362	# define EV_USE_CLOCK_SYSCALL 0
		363	# endif
		364	#endif
		365
		366	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
		367
		368	#ifdef _AIX
		369	/* AIX has a completely broken poll.h header */
		370	# undef EV_USE_POLL
		371	# define EV_USE_POLL 0
		372	#endif
216		373
217	#ifndef CLOCK_MONOTONIC	374	#ifndef CLOCK_MONOTONIC
218	# undef EV_USE_MONOTONIC	375	# undef EV_USE_MONOTONIC
219	# define EV_USE_MONOTONIC 0	376	# define EV_USE_MONOTONIC 0
220	#endif	377	#endif
…		…
228	# undef EV_USE_INOTIFY	385	# undef EV_USE_INOTIFY
229	# define EV_USE_INOTIFY 0	386	# define EV_USE_INOTIFY 0
230	#endif	387	#endif
231		388
232	#if !EV_USE_NANOSLEEP	389	#if !EV_USE_NANOSLEEP
233	# ifndef _WIN32	390	/* hp-ux has it in sys/time.h, which we unconditionally include above */
		391	# if !defined(_WIN32) && !defined(__hpux)
234	# include <sys/select.h>	392	# include <sys/select.h>
235	# endif	393	# endif
236	#endif	394	#endif
237		395
238	#if EV_USE_INOTIFY	396	#if EV_USE_INOTIFY
		397	# include <sys/statfs.h>
239	# include <sys/inotify.h>	398	# include <sys/inotify.h>
		399	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		400	# ifndef IN_DONT_FOLLOW
		401	# undef EV_USE_INOTIFY
		402	# define EV_USE_INOTIFY 0
		403	# endif
240	#endif	404	#endif
241		405
242	#if EV_SELECT_IS_WINSOCKET	406	#if EV_SELECT_IS_WINSOCKET
243	# include <winsock.h>	407	# include <winsock.h>
244	#endif	408	#endif
245		409
		410	#if EV_USE_EVENTFD
		411	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		412	# include <stdint.h>
		413	# ifndef EFD_NONBLOCK
		414	# define EFD_NONBLOCK O_NONBLOCK
		415	# endif
		416	# ifndef EFD_CLOEXEC
		417	# ifdef O_CLOEXEC
		418	# define EFD_CLOEXEC O_CLOEXEC
		419	# else
		420	# define EFD_CLOEXEC 02000000
		421	# endif
		422	# endif
		423	EV_CPP(extern "C") int (eventfd) (unsigned int initval, int flags);
		424	#endif
		425
		426	#if EV_USE_SIGNALFD
		427	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		428	# include <stdint.h>
		429	# ifndef SFD_NONBLOCK
		430	# define SFD_NONBLOCK O_NONBLOCK
		431	# endif
		432	# ifndef SFD_CLOEXEC
		433	# ifdef O_CLOEXEC
		434	# define SFD_CLOEXEC O_CLOEXEC
		435	# else
		436	# define SFD_CLOEXEC 02000000
		437	# endif
		438	# endif
		439	EV_CPP (extern "C") int signalfd (int fd, const sigset_t *mask, int flags);
		440
		441	struct signalfd_siginfo
		442	{
		443	uint32_t ssi_signo;
		444	char pad[128 - sizeof (uint32_t)];
		445	};
		446	#endif
		447
246	/**/	448	/**/
247		449
		450	#if EV_VERIFY >= 3
		451	# define EV_FREQUENT_CHECK ev_verify (EV_A)
		452	#else
		453	# define EV_FREQUENT_CHECK do { } while (0)
		454	#endif
		455
248	/*	456	/*
249	* This is used to avoid floating point rounding problems.	457	* This is used to work around floating point rounding problems.
250	* It is added to ev_rt_now when scheduling periodics
251	* to ensure progress, time-wise, even when rounding
252	* errors are against us.
253	* This value is good at least till the year 4000.	458	* This value is good at least till the year 4000.
254	* Better solutions welcome.
255	*/	459	*/
256	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */	460	#define MIN_INTERVAL 0.0001220703125 /* 1/2**13, good till 4000 */
		461	/*#define MIN_INTERVAL 0.00000095367431640625 /* 1/2**20, good till 2200 */
257		462
258	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	463	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
259	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */	464	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
260	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
261		465
262	#if __GNUC__ >= 4	466	#define EV_TV_SET(tv,t) do { tv.tv_sec = (long)t; tv.tv_usec = (long)((t - tv.tv_sec) * 1e6); } while (0)
263	# define expect(expr,value) __builtin_expect ((expr),(value))	467	#define EV_TS_SET(ts,t) do { ts.tv_sec = (long)t; ts.tv_nsec = (long)((t - ts.tv_sec) * 1e9); } while (0)
264	# define noinline __attribute__ ((noinline))	468
		469	/* the following are taken from libecb */
		470	/* ecb.h start */
		471
		472	/* many compilers define _GNUC_ to some versions but then only implement
		473	* what their idiot authors think are the "more important" extensions,
		474	* causing enourmous grief in return for some better fake benchmark numbers.
		475	* or so.
		476	* we try to detect these and simply assume they are not gcc - if they have
		477	* an issue with that they should have done it right in the first place.
		478	*/
		479	#ifndef ECB_GCC_VERSION
		480	#if !defined(__GNUC_MINOR__) || defined(__INTEL_COMPILER) || defined(__SUNPRO_C) || defined(__SUNPRO_CC) || defined(__llvm__) || defined(__clang__)
		481	#define ECB_GCC_VERSION(major,minor) 0
		482	#else
		483	#define ECB_GCC_VERSION(major,minor) (__GNUC__ > (major) || (__GNUC__ == (major) && __GNUC_MINOR__ >= (minor)))
		484	#endif
		485	#endif
		486
		487	#if __cplusplus
		488	#define ecb_inline static inline
		489	#elif ECB_GCC_VERSION(2,5)
		490	#define ecb_inline static __inline__
		491	#elif ECB_C99
		492	#define ecb_inline static inline
265	#else	493	#else
266	# define expect(expr,value) (expr)	494	#define ecb_inline static
267	# define noinline
268	# if __STDC_VERSION__ < 199901L
269	# define inline
270	# endif	495	#endif
		496
		497	#ifndef ECB_MEMORY_FENCE
		498	#if ECB_GCC_VERSION(2,5)
		499	#if __x86
		500	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("lock; orb $0, -1(%%esp)" : : : "memory")
		501	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		502	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE /* better be safe than sorry */
		503	#elif __amd64
		504	#define ECB_MEMORY_FENCE __asm__ __volatile__ ("mfence" : : : "memory")
		505	#define ECB_MEMORY_FENCE_ACQUIRE __asm__ __volatile__ ("lfence" : : : "memory")
		506	#define ECB_MEMORY_FENCE_RELEASE __asm__ __volatile__ ("sfence")
		507	#endif
271	#endif	508	#endif
		509	#endif
272		510
		511	#ifndef ECB_MEMORY_FENCE
		512	#if ECB_GCC_VERSION(4,4)
		513	#define ECB_MEMORY_FENCE __sync_synchronize ()
		514	#define ECB_MEMORY_FENCE_ACQUIRE ({ char dummy = 0; __sync_lock_test_and_set (&dummy, 1); })
		515	#define ECB_MEMORY_FENCE_RELEASE ({ char dummy = 1; __sync_lock_release (&dummy ); })
		516	#elif _MSC_VER >= 1400
		517	#define ECB_MEMORY_FENCE do { } while (0)
		518	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		519	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		520	#elif defined(_WIN32) && defined(MemoryBarrier)
		521	#define ECB_MEMORY_FENCE MemoryBarrier ()
		522	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		523	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		524	#endif
		525	#endif
		526
		527	#ifndef ECB_MEMORY_FENCE
		528	#include <pthread.h>
		529
		530	static pthread_mutex_t ecb_mf_lock = PTHREAD_MUTEX_INITIALIZER;
		531	#define ECB_MEMORY_FENCE do { pthread_mutex_lock (&ecb_mf_lock); pthread_mutex_unlock (&ecb_mf_lock); } while (0)
		532	#define ECB_MEMORY_FENCE_ACQUIRE ECB_MEMORY_FENCE
		533	#define ECB_MEMORY_FENCE_RELEASE ECB_MEMORY_FENCE
		534	#endif
		535
		536	#if ECB_GCC_VERSION(3,1)
		537	#define ecb_attribute(attrlist) __attribute__(attrlist)
		538	#define ecb_is_constant(expr) __builtin_constant_p (expr)
		539	#define ecb_expect(expr,value) __builtin_expect ((expr),(value))
		540	#define ecb_prefetch(addr,rw,locality) __builtin_prefetch (addr, rw, locality)
		541	#else
		542	#define ecb_attribute(attrlist)
		543	#define ecb_is_constant(expr) 0
		544	#define ecb_expect(expr,value) (expr)
		545	#define ecb_prefetch(addr,rw,locality)
		546	#endif
		547
		548	#define ecb_noinline ecb_attribute ((__noinline__))
		549	#define ecb_noreturn ecb_attribute ((__noreturn__))
		550	#define ecb_unused ecb_attribute ((__unused__))
		551	#define ecb_const ecb_attribute ((__const__))
		552	#define ecb_pure ecb_attribute ((__pure__))
		553
		554	#if ECB_GCC_VERSION(4,3)
		555	#define ecb_artificial ecb_attribute ((__artificial__))
		556	#define ecb_hot ecb_attribute ((__hot__))
		557	#define ecb_cold ecb_attribute ((__cold__))
		558	#else
		559	#define ecb_artificial
		560	#define ecb_hot
		561	#define ecb_cold
		562	#endif
		563
		564	/* put around conditional expressions if you are very sure that the */
		565	/* expression is mostly true or mostly false. note that these return */
		566	/* booleans, not the expression. */
273	#define expect_false(expr) expect ((expr) != 0, 0)	567	#define ecb_expect_false(expr) ecb_expect (!!(expr), 0)
274	#define expect_true(expr) expect ((expr) != 0, 1)	568	#define ecb_expect_true(expr) ecb_expect (!!(expr), 1)
		569	/* ecb.h end */
		570
		571	#define expect_false(cond) ecb_expect_false (cond)
		572	#define expect_true(cond) ecb_expect_true (cond)
		573	#define noinline ecb_noinline
		574
275	#define inline_size static inline	575	#define inline_size ecb_inline
276		576
277	#if EV_MINIMAL	577	#if EV_FEATURE_CODE
		578	# define inline_speed ecb_inline
		579	#else
278	# define inline_speed static noinline	580	# define inline_speed static noinline
		581	#endif
		582
		583	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		584
		585	#if EV_MINPRI == EV_MAXPRI
		586	# define ABSPRI(w) (((W)w), 0)
279	#else	587	#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)	588	# define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		589	#endif
285		590
286	#define EMPTY /* required for microsofts broken pseudo-c compiler */	591	#define EMPTY /* required for microsofts broken pseudo-c compiler */
287	#define EMPTY2(a,b) /* used to suppress some warnings */	592	#define EMPTY2(a,b) /* used to suppress some warnings */
288		593
289	typedef ev_watcher *W;	594	typedef ev_watcher *W;
290	typedef ev_watcher_list *WL;	595	typedef ev_watcher_list *WL;
291	typedef ev_watcher_time *WT;	596	typedef ev_watcher_time *WT;
292		597
		598	#define ev_active(w) ((W)(w))->active
		599	#define ev_at(w) ((WT)(w))->at
		600
		601	#if EV_USE_REALTIME
		602	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		603	/* giving it a reasonably high chance of working on typical architectures */
		604	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		605	#endif
		606
293	#if EV_USE_MONOTONIC	607	#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? */	608	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		609	#endif
		610
		611	#ifndef EV_FD_TO_WIN32_HANDLE
		612	# define EV_FD_TO_WIN32_HANDLE(fd) _get_osfhandle (fd)
		613	#endif
		614	#ifndef EV_WIN32_HANDLE_TO_FD
		615	# define EV_WIN32_HANDLE_TO_FD(handle) _open_osfhandle (handle, 0)
		616	#endif
		617	#ifndef EV_WIN32_CLOSE_FD
		618	# define EV_WIN32_CLOSE_FD(fd) close (fd)
297	#endif	619	#endif
298		620
299	#ifdef _WIN32	621	#ifdef _WIN32
300	# include "ev_win32.c"	622	# include "ev_win32.c"
301	#endif	623	#endif
302		624
303	/*****************************************************************************/	625	/*****************************************************************************/
304		626
		627	/* define a suitable floor function (only used by periodics atm) */
		628
		629	#if EV_USE_FLOOR
		630	# include <math.h>
		631	# define ev_floor(v) floor (v)
		632	#else
		633
		634	#include <float.h>
		635
		636	/* a floor() replacement function, should be independent of ev_tstamp type */
		637	static ev_tstamp noinline
		638	ev_floor (ev_tstamp v)
		639	{
		640	/* the choice of shift factor is not terribly important */
		641	#if FLT_RADIX != 2 /* assume FLT_RADIX == 10 */
		642	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 10000000000000000000. : 1000000000.;
		643	#else
		644	const ev_tstamp shift = sizeof (unsigned long) >= 8 ? 18446744073709551616. : 4294967296.;
		645	#endif
		646
		647	/* argument too large for an unsigned long? */
		648	if (expect_false (v >= shift))
		649	{
		650	ev_tstamp f;
		651
		652	if (v == v - 1.)
		653	return v; /* very large number */
		654
		655	f = shift * ev_floor (v * (1. / shift));
		656	return f + ev_floor (v - f);
		657	}
		658
		659	/* special treatment for negative args? */
		660	if (expect_false (v < 0.))
		661	{
		662	ev_tstamp f = -ev_floor (-v);
		663
		664	return f - (f == v ? 0 : 1);
		665	}
		666
		667	/* fits into an unsigned long */
		668	return (unsigned long)v;
		669	}
		670
		671	#endif
		672
		673	/*****************************************************************************/
		674
		675	#ifdef __linux
		676	# include <sys/utsname.h>
		677	#endif
		678
		679	static unsigned int noinline ecb_cold
		680	ev_linux_version (void)
		681	{
		682	#ifdef __linux
		683	unsigned int v = 0;
		684	struct utsname buf;
		685	int i;
		686	char *p = buf.release;
		687
		688	if (uname (&buf))
		689	return 0;
		690
		691	for (i = 3+1; --i; )
		692	{
		693	unsigned int c = 0;
		694
		695	for (;;)
		696	{
		697	if (*p >= '0' && *p <= '9')
		698	c = c * 10 + *p++ - '0';
		699	else
		700	{
		701	p += *p == '.';
		702	break;
		703	}
		704	}
		705
		706	v = (v << 8) | c;
		707	}
		708
		709	return v;
		710	#else
		711	return 0;
		712	#endif
		713	}
		714
		715	/*****************************************************************************/
		716
		717	#if EV_AVOID_STDIO
		718	static void noinline ecb_cold
		719	ev_printerr (const char *msg)
		720	{
		721	write (STDERR_FILENO, msg, strlen (msg));
		722	}
		723	#endif
		724
305	static void (*syserr_cb)(const char *msg);	725	static void (*syserr_cb)(const char *msg);
306		726
307	void	727	void ecb_cold
308	ev_set_syserr_cb (void (*cb)(const char *msg))	728	ev_set_syserr_cb (void (*cb)(const char *msg))
309	{	729	{
310	syserr_cb = cb;	730	syserr_cb = cb;
311	}	731	}
312		732
313	static void noinline	733	static void noinline ecb_cold
314	syserr (const char *msg)	734	ev_syserr (const char *msg)
315	{	735	{
316	if (!msg)	736	if (!msg)
317	msg = "(libev) system error";	737	msg = "(libev) system error";
318		738
319	if (syserr_cb)	739	if (syserr_cb)
320	syserr_cb (msg);	740	syserr_cb (msg);
321	else	741	else
322	{	742	{
		743	#if EV_AVOID_STDIO
		744	ev_printerr (msg);
		745	ev_printerr (": ");
		746	ev_printerr (strerror (errno));
		747	ev_printerr ("\n");
		748	#else
323	perror (msg);	749	perror (msg);
		750	#endif
324	abort ();	751	abort ();
325	}	752	}
326	}	753	}
327		754
		755	static void *
		756	ev_realloc_emul (void *ptr, long size)
		757	{
		758	#if __GLIBC__
		759	return realloc (ptr, size);
		760	#else
		761	/* some systems, notably openbsd and darwin, fail to properly
		762	* implement realloc (x, 0) (as required by both ansi c-89 and
		763	* the single unix specification, so work around them here.
		764	*/
		765
		766	if (size)
		767	return realloc (ptr, size);
		768
		769	free (ptr);
		770	return 0;
		771	#endif
		772	}
		773
328	static void *(*alloc)(void *ptr, long size);	774	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
329		775
330	void	776	void ecb_cold
331	ev_set_allocator (void *(*cb)(void *ptr, long size))	777	ev_set_allocator (void *(*cb)(void *ptr, long size))
332	{	778	{
333	alloc = cb;	779	alloc = cb;
334	}	780	}
335		781
336	inline_speed void *	782	inline_speed void *
337	ev_realloc (void *ptr, long size)	783	ev_realloc (void *ptr, long size)
338	{	784	{
339	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);	785	ptr = alloc (ptr, size);
340		786
341	if (!ptr && size)	787	if (!ptr && size)
342	{	788	{
		789	#if EV_AVOID_STDIO
		790	ev_printerr ("(libev) memory allocation failed, aborting.\n");
		791	#else
343	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);	792	fprintf (stderr, "(libev) cannot allocate %ld bytes, aborting.", size);
		793	#endif
344	abort ();	794	abort ();
345	}	795	}
346		796
347	return ptr;	797	return ptr;
348	}	798	}
…		…
350	#define ev_malloc(size) ev_realloc (0, (size))	800	#define ev_malloc(size) ev_realloc (0, (size))
351	#define ev_free(ptr) ev_realloc ((ptr), 0)	801	#define ev_free(ptr) ev_realloc ((ptr), 0)
352		802
353	/*****************************************************************************/	803	/*****************************************************************************/
354		804
		805	/* set in reify when reification needed */
		806	#define EV_ANFD_REIFY 1
		807
		808	/* file descriptor info structure */
355	typedef struct	809	typedef struct
356	{	810	{
357	WL head;	811	WL head;
358	unsigned char events;	812	unsigned char events; /* the events watched for */
		813	unsigned char reify; /* flag set when this ANFD needs reification (EV_ANFD_REIFY, EV__IOFDSET) */
		814	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
359	unsigned char reify;	815	unsigned char unused;
		816	#if EV_USE_EPOLL
		817	unsigned int egen; /* generation counter to counter epoll bugs */
		818	#endif
360	#if EV_SELECT_IS_WINSOCKET	819	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
361	SOCKET handle;	820	SOCKET handle;
362	#endif	821	#endif
		822	#if EV_USE_IOCP
		823	OVERLAPPED or, ow;
		824	#endif
363	} ANFD;	825	} ANFD;
364		826
		827	/* stores the pending event set for a given watcher */
365	typedef struct	828	typedef struct
366	{	829	{
367	W w;	830	W w;
368	int events;	831	int events; /* the pending event set for the given watcher */
369	} ANPENDING;	832	} ANPENDING;
370		833
371	#if EV_USE_INOTIFY	834	#if EV_USE_INOTIFY
		835	/* hash table entry per inotify-id */
372	typedef struct	836	typedef struct
373	{	837	{
374	WL head;	838	WL head;
375	} ANFS;	839	} ANFS;
		840	#endif
		841
		842	/* Heap Entry */
		843	#if EV_HEAP_CACHE_AT
		844	/* a heap element */
		845	typedef struct {
		846	ev_tstamp at;
		847	WT w;
		848	} ANHE;
		849
		850	#define ANHE_w(he) (he).w /* access watcher, read-write */
		851	#define ANHE_at(he) (he).at /* access cached at, read-only */
		852	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
		853	#else
		854	/* a heap element */
		855	typedef WT ANHE;
		856
		857	#define ANHE_w(he) (he)
		858	#define ANHE_at(he) (he)->at
		859	#define ANHE_at_cache(he)
376	#endif	860	#endif
377		861
378	#if EV_MULTIPLICITY	862	#if EV_MULTIPLICITY
379		863
380	struct ev_loop	864	struct ev_loop
…		…
399		883
400	static int ev_default_loop_ptr;	884	static int ev_default_loop_ptr;
401		885
402	#endif	886	#endif
403		887
		888	#if EV_FEATURE_API
		889	# define EV_RELEASE_CB if (expect_false (release_cb)) release_cb (EV_A)
		890	# define EV_ACQUIRE_CB if (expect_false (acquire_cb)) acquire_cb (EV_A)
		891	# define EV_INVOKE_PENDING invoke_cb (EV_A)
		892	#else
		893	# define EV_RELEASE_CB (void)0
		894	# define EV_ACQUIRE_CB (void)0
		895	# define EV_INVOKE_PENDING ev_invoke_pending (EV_A)
		896	#endif
		897
		898	#define EVBREAK_RECURSE 0x80
		899
404	/*****************************************************************************/	900	/*****************************************************************************/
405		901
		902	#ifndef EV_HAVE_EV_TIME
406	ev_tstamp	903	ev_tstamp
407	ev_time (void)	904	ev_time (void)
408	{	905	{
409	#if EV_USE_REALTIME	906	#if EV_USE_REALTIME
		907	if (expect_true (have_realtime))
		908	{
410	struct timespec ts;	909	struct timespec ts;
411	clock_gettime (CLOCK_REALTIME, &ts);	910	clock_gettime (CLOCK_REALTIME, &ts);
412	return ts.tv_sec + ts.tv_nsec * 1e-9;	911	return ts.tv_sec + ts.tv_nsec * 1e-9;
413	#else	912	}
		913	#endif
		914
414	struct timeval tv;	915	struct timeval tv;
415	gettimeofday (&tv, 0);	916	gettimeofday (&tv, 0);
416	return tv.tv_sec + tv.tv_usec * 1e-6;	917	return tv.tv_sec + tv.tv_usec * 1e-6;
417	#endif
418	}	918	}
		919	#endif
419		920
420	ev_tstamp inline_size	921	inline_size ev_tstamp
421	get_clock (void)	922	get_clock (void)
422	{	923	{
423	#if EV_USE_MONOTONIC	924	#if EV_USE_MONOTONIC
424	if (expect_true (have_monotonic))	925	if (expect_true (have_monotonic))
425	{	926	{
…		…
446	if (delay > 0.)	947	if (delay > 0.)
447	{	948	{
448	#if EV_USE_NANOSLEEP	949	#if EV_USE_NANOSLEEP
449	struct timespec ts;	950	struct timespec ts;
450		951
451	ts.tv_sec = (time_t)delay;	952	EV_TS_SET (ts, delay);
452	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
453
454	nanosleep (&ts, 0);	953	nanosleep (&ts, 0);
455	#elif defined(_WIN32)	954	#elif defined(_WIN32)
456	Sleep (delay * 1e3);	955	Sleep ((unsigned long)(delay * 1e3));
457	#else	956	#else
458	struct timeval tv;	957	struct timeval tv;
459		958
460	tv.tv_sec = (time_t)delay;	959	/* 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);	960	/* something not guaranteed by newer posix versions, but guaranteed */
462		961	/* by older ones */
		962	EV_TV_SET (tv, delay);
463	select (0, 0, 0, 0, &tv);	963	select (0, 0, 0, 0, &tv);
464	#endif	964	#endif
465	}	965	}
466	}	966	}
467		967
468	/*****************************************************************************/	968	/*****************************************************************************/
469		969
470	int inline_size	970	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
		971
		972	/* find a suitable new size for the given array, */
		973	/* hopefully by rounding to a nice-to-malloc size */
		974	inline_size int
471	array_nextsize (int elem, int cur, int cnt)	975	array_nextsize (int elem, int cur, int cnt)
472	{	976	{
473	int ncur = cur + 1;	977	int ncur = cur + 1;
474		978
475	do	979	do
476	ncur <<= 1;	980	ncur <<= 1;
477	while (cnt > ncur);	981	while (cnt > ncur);
478		982
479	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */	983	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
480	if (elem * ncur > 4096)	984	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
481	{	985	{
482	ncur *= elem;	986	ncur *= elem;
483	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;	987	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
484	ncur = ncur - sizeof (void *) * 4;	988	ncur = ncur - sizeof (void *) * 4;
485	ncur /= elem;	989	ncur /= elem;
486	}	990	}
487		991
488	return ncur;	992	return ncur;
489	}	993	}
490		994
491	static noinline void *	995	static void * noinline ecb_cold
492	array_realloc (int elem, void *base, int *cur, int cnt)	996	array_realloc (int elem, void *base, int *cur, int cnt)
493	{	997	{
494	*cur = array_nextsize (elem, *cur, cnt);	998	*cur = array_nextsize (elem, *cur, cnt);
495	return ev_realloc (base, elem * *cur);	999	return ev_realloc (base, elem * *cur);
496	}	1000	}
		1001
		1002	#define array_init_zero(base,count) \
		1003	memset ((void *)(base), 0, sizeof (*(base)) * (count))
497		1004
498	#define array_needsize(type,base,cur,cnt,init) \	1005	#define array_needsize(type,base,cur,cnt,init) \
499	if (expect_false ((cnt) > (cur))) \	1006	if (expect_false ((cnt) > (cur))) \
500	{ \	1007	{ \
501	int ocur_ = (cur); \	1008	int ecb_unused ocur_ = (cur); \
502	(base) = (type *)array_realloc \	1009	(base) = (type *)array_realloc \
503	(sizeof (type), (base), &(cur), (cnt)); \	1010	(sizeof (type), (base), &(cur), (cnt)); \
504	init ((base) + (ocur_), (cur) - ocur_); \	1011	init ((base) + (ocur_), (cur) - ocur_); \
505	}	1012	}
506		1013
…		…
513	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\	1020	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
514	}	1021	}
515	#endif	1022	#endif
516		1023
517	#define array_free(stem, idx) \	1024	#define array_free(stem, idx) \
518	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	1025	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
519		1026
520	/*****************************************************************************/	1027	/*****************************************************************************/
		1028
		1029	/* dummy callback for pending events */
		1030	static void noinline
		1031	pendingcb (EV_P_ ev_prepare *w, int revents)
		1032	{
		1033	}
521		1034
522	void noinline	1035	void noinline
523	ev_feed_event (EV_P_ void *w, int revents)	1036	ev_feed_event (EV_P_ void *w, int revents)
524	{	1037	{
525	W w_ = (W)w;	1038	W w_ = (W)w;
…		…
534	pendings [pri][w_->pending - 1].w = w_;	1047	pendings [pri][w_->pending - 1].w = w_;
535	pendings [pri][w_->pending - 1].events = revents;	1048	pendings [pri][w_->pending - 1].events = revents;
536	}	1049	}
537	}	1050	}
538		1051
539	void inline_speed	1052	inline_speed void
		1053	feed_reverse (EV_P_ W w)
		1054	{
		1055	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		1056	rfeeds [rfeedcnt++] = w;
		1057	}
		1058
		1059	inline_size void
		1060	feed_reverse_done (EV_P_ int revents)
		1061	{
		1062	do
		1063	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		1064	while (rfeedcnt);
		1065	}
		1066
		1067	inline_speed void
540	queue_events (EV_P_ W *events, int eventcnt, int type)	1068	queue_events (EV_P_ W *events, int eventcnt, int type)
541	{	1069	{
542	int i;	1070	int i;
543		1071
544	for (i = 0; i < eventcnt; ++i)	1072	for (i = 0; i < eventcnt; ++i)
545	ev_feed_event (EV_A_ events [i], type);	1073	ev_feed_event (EV_A_ events [i], type);
546	}	1074	}
547		1075
548	/*****************************************************************************/	1076	/*****************************************************************************/
549		1077
550	void inline_size	1078	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)	1079	fd_event_nocheck (EV_P_ int fd, int revents)
565	{	1080	{
566	ANFD *anfd = anfds + fd;	1081	ANFD *anfd = anfds + fd;
567	ev_io *w;	1082	ev_io *w;
568		1083
569	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1084	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
…		…
573	if (ev)	1088	if (ev)
574	ev_feed_event (EV_A_ (W)w, ev);	1089	ev_feed_event (EV_A_ (W)w, ev);
575	}	1090	}
576	}	1091	}
577		1092
		1093	/* do not submit kernel events for fds that have reify set */
		1094	/* because that means they changed while we were polling for new events */
		1095	inline_speed void
		1096	fd_event (EV_P_ int fd, int revents)
		1097	{
		1098	ANFD *anfd = anfds + fd;
		1099
		1100	if (expect_true (!anfd->reify))
		1101	fd_event_nocheck (EV_A_ fd, revents);
		1102	}
		1103
578	void	1104	void
579	ev_feed_fd_event (EV_P_ int fd, int revents)	1105	ev_feed_fd_event (EV_P_ int fd, int revents)
580	{	1106	{
581	if (fd >= 0 && fd < anfdmax)	1107	if (fd >= 0 && fd < anfdmax)
582	fd_event (EV_A_ fd, revents);	1108	fd_event_nocheck (EV_A_ fd, revents);
583	}	1109	}
584		1110
585	void inline_size	1111	/* make sure the external fd watch events are in-sync */
		1112	/* with the kernel/libev internal state */
		1113	inline_size void
586	fd_reify (EV_P)	1114	fd_reify (EV_P)
587	{	1115	{
588	int i;	1116	int i;
		1117
		1118	#if EV_SELECT_IS_WINSOCKET || EV_USE_IOCP
		1119	for (i = 0; i < fdchangecnt; ++i)
		1120	{
		1121	int fd = fdchanges [i];
		1122	ANFD *anfd = anfds + fd;
		1123
		1124	if (anfd->reify & EV__IOFDSET && anfd->head)
		1125	{
		1126	SOCKET handle = EV_FD_TO_WIN32_HANDLE (fd);
		1127
		1128	if (handle != anfd->handle)
		1129	{
		1130	unsigned long arg;
		1131
		1132	assert (("libev: only socket fds supported in this configuration", ioctlsocket (handle, FIONREAD, &arg) == 0));
		1133
		1134	/* handle changed, but fd didn't - we need to do it in two steps */
		1135	backend_modify (EV_A_ fd, anfd->events, 0);
		1136	anfd->events = 0;
		1137	anfd->handle = handle;
		1138	}
		1139	}
		1140	}
		1141	#endif
589		1142
590	for (i = 0; i < fdchangecnt; ++i)	1143	for (i = 0; i < fdchangecnt; ++i)
591	{	1144	{
592	int fd = fdchanges [i];	1145	int fd = fdchanges [i];
593	ANFD *anfd = anfds + fd;	1146	ANFD *anfd = anfds + fd;
594	ev_io *w;	1147	ev_io *w;
595		1148
596	unsigned char events = 0;	1149	unsigned char o_events = anfd->events;
		1150	unsigned char o_reify = anfd->reify;
597		1151
598	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)	1152	anfd->reify = 0;
599	events |= (unsigned char)w->events;
600		1153
601	#if EV_SELECT_IS_WINSOCKET	1154	/*if (expect_true (o_reify & EV_ANFD_REIFY)) probably a deoptimisation */
602	if (events)
603	{	1155	{
604	unsigned long argp;	1156	anfd->events = 0;
605	#ifdef EV_FD_TO_WIN32_HANDLE	1157
606	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);	1158	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
607	#else	1159	anfd->events |= (unsigned char)w->events;
608	anfd->handle = _get_osfhandle (fd);	1160
609	#endif	1161	if (o_events != anfd->events)
610	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));	1162	o_reify = EV__IOFDSET; /* actually |= */
611	}	1163	}
612	#endif
613		1164
614	{	1165	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);	1166	backend_modify (EV_A_ fd, o_events, anfd->events);
623	}
624	}	1167	}
625		1168
626	fdchangecnt = 0;	1169	fdchangecnt = 0;
627	}	1170	}
628		1171
629	void inline_size	1172	/* something about the given fd changed */
		1173	inline_size void
630	fd_change (EV_P_ int fd, int flags)	1174	fd_change (EV_P_ int fd, int flags)
631	{	1175	{
632	unsigned char reify = anfds [fd].reify;	1176	unsigned char reify = anfds [fd].reify;
633	anfds [fd].reify |= flags;	1177	anfds [fd].reify |= flags;
634		1178
…		…
638	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);	1182	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
639	fdchanges [fdchangecnt - 1] = fd;	1183	fdchanges [fdchangecnt - 1] = fd;
640	}	1184	}
641	}	1185	}
642		1186
643	void inline_speed	1187	/* the given fd is invalid/unusable, so make sure it doesn't hurt us anymore */
		1188	inline_speed void ecb_cold
644	fd_kill (EV_P_ int fd)	1189	fd_kill (EV_P_ int fd)
645	{	1190	{
646	ev_io *w;	1191	ev_io *w;
647		1192
648	while ((w = (ev_io *)anfds [fd].head))	1193	while ((w = (ev_io *)anfds [fd].head))
…		…
650	ev_io_stop (EV_A_ w);	1195	ev_io_stop (EV_A_ w);
651	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	1196	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
652	}	1197	}
653	}	1198	}
654		1199
655	int inline_size	1200	/* check whether the given fd is actually valid, for error recovery */
		1201	inline_size int ecb_cold
656	fd_valid (int fd)	1202	fd_valid (int fd)
657	{	1203	{
658	#ifdef _WIN32	1204	#ifdef _WIN32
659	return _get_osfhandle (fd) != -1;	1205	return EV_FD_TO_WIN32_HANDLE (fd) != -1;
660	#else	1206	#else
661	return fcntl (fd, F_GETFD) != -1;	1207	return fcntl (fd, F_GETFD) != -1;
662	#endif	1208	#endif
663	}	1209	}
664		1210
665	/* called on EBADF to verify fds */	1211	/* called on EBADF to verify fds */
666	static void noinline	1212	static void noinline ecb_cold
667	fd_ebadf (EV_P)	1213	fd_ebadf (EV_P)
668	{	1214	{
669	int fd;	1215	int fd;
670		1216
671	for (fd = 0; fd < anfdmax; ++fd)	1217	for (fd = 0; fd < anfdmax; ++fd)
672	if (anfds [fd].events)	1218	if (anfds [fd].events)
673	if (!fd_valid (fd) == -1 && errno == EBADF)	1219	if (!fd_valid (fd) && errno == EBADF)
674	fd_kill (EV_A_ fd);	1220	fd_kill (EV_A_ fd);
675	}	1221	}
676		1222
677	/* called on ENOMEM in select/poll to kill some fds and retry */	1223	/* called on ENOMEM in select/poll to kill some fds and retry */
678	static void noinline	1224	static void noinline ecb_cold
679	fd_enomem (EV_P)	1225	fd_enomem (EV_P)
680	{	1226	{
681	int fd;	1227	int fd;
682		1228
683	for (fd = anfdmax; fd--; )	1229	for (fd = anfdmax; fd--; )
684	if (anfds [fd].events)	1230	if (anfds [fd].events)
685	{	1231	{
686	fd_kill (EV_A_ fd);	1232	fd_kill (EV_A_ fd);
687	return;	1233	break;
688	}	1234	}
689	}	1235	}
690		1236
691	/* usually called after fork if backend needs to re-arm all fds from scratch */	1237	/* usually called after fork if backend needs to re-arm all fds from scratch */
692	static void noinline	1238	static void noinline
…		…
696		1242
697	for (fd = 0; fd < anfdmax; ++fd)	1243	for (fd = 0; fd < anfdmax; ++fd)
698	if (anfds [fd].events)	1244	if (anfds [fd].events)
699	{	1245	{
700	anfds [fd].events = 0;	1246	anfds [fd].events = 0;
		1247	anfds [fd].emask = 0;
701	fd_change (EV_A_ fd, EV_IOFDSET | 1);	1248	fd_change (EV_A_ fd, EV__IOFDSET | EV_ANFD_REIFY);
702	}	1249	}
703	}	1250	}
704		1251
705	/*****************************************************************************/	1252	/* used to prepare libev internal fd's */
706		1253	/* this is not fork-safe */
707	void inline_speed	1254	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)	1255	fd_intern (int fd)
792	{	1256	{
793	#ifdef _WIN32	1257	#ifdef _WIN32
794	int arg = 1;	1258	unsigned long arg = 1;
795	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);	1259	ioctlsocket (EV_FD_TO_WIN32_HANDLE (fd), FIONBIO, &arg);
796	#else	1260	#else
797	fcntl (fd, F_SETFD, FD_CLOEXEC);	1261	fcntl (fd, F_SETFD, FD_CLOEXEC);
798	fcntl (fd, F_SETFL, O_NONBLOCK);	1262	fcntl (fd, F_SETFL, O_NONBLOCK);
799	#endif	1263	#endif
800	}	1264	}
801		1265
		1266	/*****************************************************************************/
		1267
		1268	/*
		1269	* the heap functions want a real array index. array index 0 is guaranteed to not
		1270	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
		1271	* the branching factor of the d-tree.
		1272	*/
		1273
		1274	/*
		1275	* at the moment we allow libev the luxury of two heaps,
		1276	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
		1277	* which is more cache-efficient.
		1278	* the difference is about 5% with 50000+ watchers.
		1279	*/
		1280	#if EV_USE_4HEAP
		1281
		1282	#define DHEAP 4
		1283	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		1284	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		1285	#define UPHEAP_DONE(p,k) ((p) == (k))
		1286
		1287	/* away from the root */
		1288	inline_speed void
		1289	downheap (ANHE *heap, int N, int k)
		1290	{
		1291	ANHE he = heap [k];
		1292	ANHE *E = heap + N + HEAP0;
		1293
		1294	for (;;)
		1295	{
		1296	ev_tstamp minat;
		1297	ANHE *minpos;
		1298	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
		1299
		1300	/* find minimum child */
		1301	if (expect_true (pos + DHEAP - 1 < E))
		1302	{
		1303	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1304	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1305	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1306	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1307	}
		1308	else if (pos < E)
		1309	{
		1310	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		1311	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		1312	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		1313	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		1314	}
		1315	else
		1316	break;
		1317
		1318	if (ANHE_at (he) <= minat)
		1319	break;
		1320
		1321	heap [k] = *minpos;
		1322	ev_active (ANHE_w (*minpos)) = k;
		1323
		1324	k = minpos - heap;
		1325	}
		1326
		1327	heap [k] = he;
		1328	ev_active (ANHE_w (he)) = k;
		1329	}
		1330
		1331	#else /* 4HEAP */
		1332
		1333	#define HEAP0 1
		1334	#define HPARENT(k) ((k) >> 1)
		1335	#define UPHEAP_DONE(p,k) (!(p))
		1336
		1337	/* away from the root */
		1338	inline_speed void
		1339	downheap (ANHE *heap, int N, int k)
		1340	{
		1341	ANHE he = heap [k];
		1342
		1343	for (;;)
		1344	{
		1345	int c = k << 1;
		1346
		1347	if (c >= N + HEAP0)
		1348	break;
		1349
		1350	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		1351	? 1 : 0;
		1352
		1353	if (ANHE_at (he) <= ANHE_at (heap [c]))
		1354	break;
		1355
		1356	heap [k] = heap [c];
		1357	ev_active (ANHE_w (heap [k])) = k;
		1358
		1359	k = c;
		1360	}
		1361
		1362	heap [k] = he;
		1363	ev_active (ANHE_w (he)) = k;
		1364	}
		1365	#endif
		1366
		1367	/* towards the root */
		1368	inline_speed void
		1369	upheap (ANHE *heap, int k)
		1370	{
		1371	ANHE he = heap [k];
		1372
		1373	for (;;)
		1374	{
		1375	int p = HPARENT (k);
		1376
		1377	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		1378	break;
		1379
		1380	heap [k] = heap [p];
		1381	ev_active (ANHE_w (heap [k])) = k;
		1382	k = p;
		1383	}
		1384
		1385	heap [k] = he;
		1386	ev_active (ANHE_w (he)) = k;
		1387	}
		1388
		1389	/* move an element suitably so it is in a correct place */
		1390	inline_size void
		1391	adjustheap (ANHE *heap, int N, int k)
		1392	{
		1393	if (k > HEAP0 && ANHE_at (heap [k]) <= ANHE_at (heap [HPARENT (k)]))
		1394	upheap (heap, k);
		1395	else
		1396	downheap (heap, N, k);
		1397	}
		1398
		1399	/* rebuild the heap: this function is used only once and executed rarely */
		1400	inline_size void
		1401	reheap (ANHE *heap, int N)
		1402	{
		1403	int i;
		1404
		1405	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1406	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1407	for (i = 0; i < N; ++i)
		1408	upheap (heap, i + HEAP0);
		1409	}
		1410
		1411	/*****************************************************************************/
		1412
		1413	/* associate signal watchers to a signal signal */
		1414	typedef struct
		1415	{
		1416	EV_ATOMIC_T pending;
		1417	#if EV_MULTIPLICITY
		1418	EV_P;
		1419	#endif
		1420	WL head;
		1421	} ANSIG;
		1422
		1423	static ANSIG signals [EV_NSIG - 1];
		1424
		1425	/*****************************************************************************/
		1426
		1427	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
		1428
802	static void noinline	1429	static void noinline ecb_cold
803	evpipe_init (EV_P)	1430	evpipe_init (EV_P)
804	{	1431	{
805	if (!ev_is_active (&pipeev))	1432	if (!ev_is_active (&pipe_w))
806	{	1433	{
		1434	# if EV_USE_EVENTFD
		1435	evfd = eventfd (0, EFD_NONBLOCK | EFD_CLOEXEC);
		1436	if (evfd < 0 && errno == EINVAL)
		1437	evfd = eventfd (0, 0);
		1438
		1439	if (evfd >= 0)
		1440	{
		1441	evpipe [0] = -1;
		1442	fd_intern (evfd); /* doing it twice doesn't hurt */
		1443	ev_io_set (&pipe_w, evfd, EV_READ);
		1444	}
		1445	else
		1446	# endif
		1447	{
807	while (pipe (evpipe))	1448	while (pipe (evpipe))
808	syserr ("(libev) error creating signal/async pipe");	1449	ev_syserr ("(libev) error creating signal/async pipe");
809		1450
810	fd_intern (evpipe [0]);	1451	fd_intern (evpipe [0]);
811	fd_intern (evpipe [1]);	1452	fd_intern (evpipe [1]);
812
813	ev_io_set (&pipeev, evpipe [0], EV_READ);	1453	ev_io_set (&pipe_w, evpipe [0], EV_READ);
		1454	}
		1455
814	ev_io_start (EV_A_ &pipeev);	1456	ev_io_start (EV_A_ &pipe_w);
815	ev_unref (EV_A); /* watcher should not keep loop alive */	1457	ev_unref (EV_A); /* watcher should not keep loop alive */
816	}	1458	}
817	}	1459	}
818		1460
819	void inline_size	1461	inline_speed void
820	evpipe_write (EV_P_ int sig, int async)	1462	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
821	{	1463	{
822	if (!(gotasync || gotsig))	1464	if (expect_true (*flag))
		1465	return;
		1466
		1467	*flag = 1;
		1468
		1469	ECB_MEMORY_FENCE_RELEASE; /* make sure flag is visible before the wakeup */
		1470
		1471	pipe_write_skipped = 1;
		1472
		1473	ECB_MEMORY_FENCE; /* make sure pipe_write_skipped is visible before we check pipe_write_wanted */
		1474
		1475	if (pipe_write_wanted)
823	{	1476	{
		1477	int old_errno;
		1478
		1479	pipe_write_skipped = 0; /* just an optimsiation, no fence needed */
		1480
824	int old_errno = errno; /* save errno becaue write might clobber it */	1481	old_errno = errno; /* save errno because write will clobber it */
825		1482
826	if (sig) gotsig = 1;	1483	#if EV_USE_EVENTFD
827	if (async) gotasync = 1;	1484	if (evfd >= 0)
828		1485	{
829	write (evpipe [1], &old_errno, 1);	1486	uint64_t counter = 1;
		1487	write (evfd, &counter, sizeof (uint64_t));
		1488	}
		1489	else
		1490	#endif
		1491	{
		1492	/* win32 people keep sending patches that change this write() to send() */
		1493	/* and then run away. but send() is wrong, it wants a socket handle on win32 */
		1494	/* so when you think this write should be a send instead, please find out */
		1495	/* where your send() is from - it's definitely not the microsoft send, and */
		1496	/* tell me. thank you. */
		1497	write (evpipe [1], &(evpipe [1]), 1);
		1498	}
830		1499
831	errno = old_errno;	1500	errno = old_errno;
832	}	1501	}
833	}	1502	}
834		1503
		1504	/* called whenever the libev signal pipe */
		1505	/* got some events (signal, async) */
835	static void	1506	static void
836	pipecb (EV_P_ ev_io *iow, int revents)	1507	pipecb (EV_P_ ev_io *iow, int revents)
837	{	1508	{
		1509	int i;
		1510
		1511	if (revents & EV_READ)
838	{	1512	{
839	int dummy;	1513	#if EV_USE_EVENTFD
		1514	if (evfd >= 0)
		1515	{
		1516	uint64_t counter;
		1517	read (evfd, &counter, sizeof (uint64_t));
		1518	}
		1519	else
		1520	#endif
		1521	{
		1522	char dummy;
		1523	/* see discussion in evpipe_write when you think this read should be recv in win32 */
840	read (evpipe [0], &dummy, 1);	1524	read (evpipe [0], &dummy, 1);
		1525	}
841	}	1526	}
842		1527
843	if (gotsig && ev_is_default_loop (EV_A))	1528	pipe_write_skipped = 0;
844	{
845	int signum;
846	gotsig = 0;
847		1529
848	for (signum = signalmax; signum--; )	1530	#if EV_SIGNAL_ENABLE
849	if (signals [signum].gotsig)	1531	if (sig_pending)
		1532	{
		1533	sig_pending = 0;
		1534
		1535	for (i = EV_NSIG - 1; i--; )
		1536	if (expect_false (signals [i].pending))
850	ev_feed_signal_event (EV_A_ signum + 1);	1537	ev_feed_signal_event (EV_A_ i + 1);
851	}	1538	}
		1539	#endif
852		1540
853	#if EV_ASYNC_ENABLE	1541	#if EV_ASYNC_ENABLE
854	if (gotasync)	1542	if (async_pending)
855	{	1543	{
856	int i;	1544	async_pending = 0;
857	gotasync = 0;
858		1545
859	for (i = asynccnt; i--; )	1546	for (i = asynccnt; i--; )
860	if (asyncs [i]->sent)	1547	if (asyncs [i]->sent)
861	{	1548	{
862	asyncs [i]->sent = 0;	1549	asyncs [i]->sent = 0;
…		…
866	#endif	1553	#endif
867	}	1554	}
868		1555
869	/*****************************************************************************/	1556	/*****************************************************************************/
870		1557
		1558	void
		1559	ev_feed_signal (int signum)
		1560	{
		1561	#if EV_MULTIPLICITY
		1562	EV_P = signals [signum - 1].loop;
		1563
		1564	if (!EV_A)
		1565	return;
		1566	#endif
		1567
		1568	if (!ev_active (&pipe_w))
		1569	return;
		1570
		1571	signals [signum - 1].pending = 1;
		1572	evpipe_write (EV_A_ &sig_pending);
		1573	}
		1574
871	static void	1575	static void
872	sighandler (int signum)	1576	ev_sighandler (int signum)
873	{	1577	{
874	#if EV_MULTIPLICITY
875	struct ev_loop *loop = &default_loop_struct;
876	#endif
877
878	#if _WIN32	1578	#ifdef _WIN32
879	signal (signum, sighandler);	1579	signal (signum, ev_sighandler);
880	#endif	1580	#endif
881		1581
882	signals [signum - 1].gotsig = 1;	1582	ev_feed_signal (signum);
883	evpipe_write (EV_A_ 1, 0);
884	}	1583	}
885		1584
886	void noinline	1585	void noinline
887	ev_feed_signal_event (EV_P_ int signum)	1586	ev_feed_signal_event (EV_P_ int signum)
888	{	1587	{
889	WL w;	1588	WL w;
890		1589
		1590	if (expect_false (signum <= 0 || signum > EV_NSIG))
		1591	return;
		1592
		1593	--signum;
		1594
891	#if EV_MULTIPLICITY	1595	#if EV_MULTIPLICITY
892	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));	1596	/* it is permissible to try to feed a signal to the wrong loop */
893	#endif	1597	/* or, likely more useful, feeding a signal nobody is waiting for */
894		1598
895	--signum;	1599	if (expect_false (signals [signum].loop != EV_A))
896
897	if (signum < 0 || signum >= signalmax)
898	return;	1600	return;
		1601	#endif
899		1602
900	signals [signum].gotsig = 0;	1603	signals [signum].pending = 0;
901		1604
902	for (w = signals [signum].head; w; w = w->next)	1605	for (w = signals [signum].head; w; w = w->next)
903	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);	1606	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
904	}	1607	}
905		1608
		1609	#if EV_USE_SIGNALFD
		1610	static void
		1611	sigfdcb (EV_P_ ev_io *iow, int revents)
		1612	{
		1613	struct signalfd_siginfo si[2], *sip; /* these structs are big */
		1614
		1615	for (;;)
		1616	{
		1617	ssize_t res = read (sigfd, si, sizeof (si));
		1618
		1619	/* not ISO-C, as res might be -1, but works with SuS */
		1620	for (sip = si; (char *)sip < (char *)si + res; ++sip)
		1621	ev_feed_signal_event (EV_A_ sip->ssi_signo);
		1622
		1623	if (res < (ssize_t)sizeof (si))
		1624	break;
		1625	}
		1626	}
		1627	#endif
		1628
		1629	#endif
		1630
906	/*****************************************************************************/	1631	/*****************************************************************************/
907		1632
		1633	#if EV_CHILD_ENABLE
908	static WL childs [EV_PID_HASHSIZE];	1634	static WL childs [EV_PID_HASHSIZE];
909
910	#ifndef _WIN32
911		1635
912	static ev_signal childev;	1636	static ev_signal childev;
913		1637
914	#ifndef WIFCONTINUED	1638	#ifndef WIFCONTINUED
915	# define WIFCONTINUED(status) 0	1639	# define WIFCONTINUED(status) 0
916	#endif	1640	#endif
917		1641
918	void inline_speed	1642	/* handle a single child status event */
		1643	inline_speed void
919	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)	1644	child_reap (EV_P_ int chain, int pid, int status)
920	{	1645	{
921	ev_child *w;	1646	ev_child *w;
922	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);	1647	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
923		1648
924	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)	1649	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
925	{	1650	{
926	if ((w->pid == pid || !w->pid)	1651	if ((w->pid == pid || !w->pid)
927	&& (!traced || (w->flags & 1)))	1652	&& (!traced || (w->flags & 1)))
928	{	1653	{
929	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */	1654	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;	1655	w->rpid = pid;
931	w->rstatus = status;	1656	w->rstatus = status;
932	ev_feed_event (EV_A_ (W)w, EV_CHILD);	1657	ev_feed_event (EV_A_ (W)w, EV_CHILD);
933	}	1658	}
934	}	1659	}
…		…
936		1661
937	#ifndef WCONTINUED	1662	#ifndef WCONTINUED
938	# define WCONTINUED 0	1663	# define WCONTINUED 0
939	#endif	1664	#endif
940		1665
		1666	/* called on sigchld etc., calls waitpid */
941	static void	1667	static void
942	childcb (EV_P_ ev_signal *sw, int revents)	1668	childcb (EV_P_ ev_signal *sw, int revents)
943	{	1669	{
944	int pid, status;	1670	int pid, status;
945		1671
…		…
948	if (!WCONTINUED	1674	if (!WCONTINUED
949	|| errno != EINVAL	1675	|| errno != EINVAL
950	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))	1676	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
951	return;	1677	return;
952		1678
953	/* make sure we are called again until all childs have been reaped */	1679	/* 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 */	1680	/* 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);	1681	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
956		1682
957	child_reap (EV_A_ sw, pid, pid, status);	1683	child_reap (EV_A_ pid, pid, status);
958	if (EV_PID_HASHSIZE > 1)	1684	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 */	1685	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
960	}	1686	}
961		1687
962	#endif	1688	#endif
963		1689
964	/*****************************************************************************/	1690	/*****************************************************************************/
965		1691
		1692	#if EV_USE_IOCP
		1693	# include "ev_iocp.c"
		1694	#endif
966	#if EV_USE_PORT	1695	#if EV_USE_PORT
967	# include "ev_port.c"	1696	# include "ev_port.c"
968	#endif	1697	#endif
969	#if EV_USE_KQUEUE	1698	#if EV_USE_KQUEUE
970	# include "ev_kqueue.c"	1699	# include "ev_kqueue.c"
…		…
977	#endif	1706	#endif
978	#if EV_USE_SELECT	1707	#if EV_USE_SELECT
979	# include "ev_select.c"	1708	# include "ev_select.c"
980	#endif	1709	#endif
981		1710
982	int	1711	int ecb_cold
983	ev_version_major (void)	1712	ev_version_major (void)
984	{	1713	{
985	return EV_VERSION_MAJOR;	1714	return EV_VERSION_MAJOR;
986	}	1715	}
987		1716
988	int	1717	int ecb_cold
989	ev_version_minor (void)	1718	ev_version_minor (void)
990	{	1719	{
991	return EV_VERSION_MINOR;	1720	return EV_VERSION_MINOR;
992	}	1721	}
993		1722
994	/* return true if we are running with elevated privileges and should ignore env variables */	1723	/* return true if we are running with elevated privileges and should ignore env variables */
995	int inline_size	1724	int inline_size ecb_cold
996	enable_secure (void)	1725	enable_secure (void)
997	{	1726	{
998	#ifdef _WIN32	1727	#ifdef _WIN32
999	return 0;	1728	return 0;
1000	#else	1729	#else
1001	return getuid () != geteuid ()	1730	return getuid () != geteuid ()
1002	|| getgid () != getegid ();	1731	|| getgid () != getegid ();
1003	#endif	1732	#endif
1004	}	1733	}
1005		1734
1006	unsigned int	1735	unsigned int ecb_cold
1007	ev_supported_backends (void)	1736	ev_supported_backends (void)
1008	{	1737	{
1009	unsigned int flags = 0;	1738	unsigned int flags = 0;
1010		1739
1011	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;	1740	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
…		…
1015	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;	1744	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
1016		1745
1017	return flags;	1746	return flags;
1018	}	1747	}
1019		1748
1020	unsigned int	1749	unsigned int ecb_cold
1021	ev_recommended_backends (void)	1750	ev_recommended_backends (void)
1022	{	1751	{
1023	unsigned int flags = ev_supported_backends ();	1752	unsigned int flags = ev_supported_backends ();
1024		1753
1025	#ifndef __NetBSD__	1754	#ifndef __NetBSD__
1026	/* kqueue is borked on everything but netbsd apparently */	1755	/* kqueue is borked on everything but netbsd apparently */
1027	/* it usually doesn't work correctly on anything but sockets and pipes */	1756	/* it usually doesn't work correctly on anything but sockets and pipes */
1028	flags &= ~EVBACKEND_KQUEUE;	1757	flags &= ~EVBACKEND_KQUEUE;
1029	#endif	1758	#endif
1030	#ifdef __APPLE__	1759	#ifdef __APPLE__
1031	// flags &= ~EVBACKEND_KQUEUE; for documentation	1760	/* only select works correctly on that "unix-certified" platform */
1032	flags &= ~EVBACKEND_POLL;	1761	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1762	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		1763	#endif
		1764	#ifdef __FreeBSD__
		1765	flags &= ~EVBACKEND_POLL; /* poll return value is unusable (http://forums.freebsd.org/archive/index.php/t-10270.html) */
1033	#endif	1766	#endif
1034		1767
1035	return flags;	1768	return flags;
1036	}	1769	}
1037		1770
1038	unsigned int	1771	unsigned int ecb_cold
1039	ev_embeddable_backends (void)	1772	ev_embeddable_backends (void)
1040	{	1773	{
1041	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;	1774	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
1042		1775
1043	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */	1776	/* 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 */	1777	if (ev_linux_version () < 0x020620) /* disable it on linux < 2.6.32 */
1045	flags &= ~EVBACKEND_EPOLL;	1778	flags &= ~EVBACKEND_EPOLL;
1046		1779
1047	return flags;	1780	return flags;
1048	}	1781	}
1049		1782
1050	unsigned int	1783	unsigned int
1051	ev_backend (EV_P)	1784	ev_backend (EV_P)
1052	{	1785	{
1053	return backend;	1786	return backend;
1054	}	1787	}
1055		1788
		1789	#if EV_FEATURE_API
1056	unsigned int	1790	unsigned int
1057	ev_loop_count (EV_P)	1791	ev_iteration (EV_P)
1058	{	1792	{
1059	return loop_count;	1793	return loop_count;
		1794	}
		1795
		1796	unsigned int
		1797	ev_depth (EV_P)
		1798	{
		1799	return loop_depth;
1060	}	1800	}
1061		1801
1062	void	1802	void
1063	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)	1803	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
1064	{	1804	{
…		…
1069	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)	1809	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
1070	{	1810	{
1071	timeout_blocktime = interval;	1811	timeout_blocktime = interval;
1072	}	1812	}
1073		1813
		1814	void
		1815	ev_set_userdata (EV_P_ void *data)
		1816	{
		1817	userdata = data;
		1818	}
		1819
		1820	void *
		1821	ev_userdata (EV_P)
		1822	{
		1823	return userdata;
		1824	}
		1825
		1826	void
		1827	ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P))
		1828	{
		1829	invoke_cb = invoke_pending_cb;
		1830	}
		1831
		1832	void
		1833	ev_set_loop_release_cb (EV_P_ void (*release)(EV_P), void (*acquire)(EV_P))
		1834	{
		1835	release_cb = release;
		1836	acquire_cb = acquire;
		1837	}
		1838	#endif
		1839
		1840	/* initialise a loop structure, must be zero-initialised */
1074	static void noinline	1841	static void noinline ecb_cold
1075	loop_init (EV_P_ unsigned int flags)	1842	loop_init (EV_P_ unsigned int flags)
1076	{	1843	{
1077	if (!backend)	1844	if (!backend)
1078	{	1845	{
		1846	origflags = flags;
		1847
		1848	#if EV_USE_REALTIME
		1849	if (!have_realtime)
		1850	{
		1851	struct timespec ts;
		1852
		1853	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1854	have_realtime = 1;
		1855	}
		1856	#endif
		1857
1079	#if EV_USE_MONOTONIC	1858	#if EV_USE_MONOTONIC
		1859	if (!have_monotonic)
1080	{	1860	{
1081	struct timespec ts;	1861	struct timespec ts;
		1862
1082	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1863	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
1083	have_monotonic = 1;	1864	have_monotonic = 1;
1084	}	1865	}
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	1866	#endif
1100		1867
1101	/* pid check not overridable via env */	1868	/* pid check not overridable via env */
1102	#ifndef _WIN32	1869	#ifndef _WIN32
1103	if (flags & EVFLAG_FORKCHECK)	1870	if (flags & EVFLAG_FORKCHECK)
…		…
1107	if (!(flags & EVFLAG_NOENV)	1874	if (!(flags & EVFLAG_NOENV)
1108	&& !enable_secure ()	1875	&& !enable_secure ()
1109	&& getenv ("LIBEV_FLAGS"))	1876	&& getenv ("LIBEV_FLAGS"))
1110	flags = atoi (getenv ("LIBEV_FLAGS"));	1877	flags = atoi (getenv ("LIBEV_FLAGS"));
1111		1878
1112	if (!(flags & 0x0000ffffUL))	1879	ev_rt_now = ev_time ();
		1880	mn_now = get_clock ();
		1881	now_floor = mn_now;
		1882	rtmn_diff = ev_rt_now - mn_now;
		1883	#if EV_FEATURE_API
		1884	invoke_cb = ev_invoke_pending;
		1885	#endif
		1886
		1887	io_blocktime = 0.;
		1888	timeout_blocktime = 0.;
		1889	backend = 0;
		1890	backend_fd = -1;
		1891	sig_pending = 0;
		1892	#if EV_ASYNC_ENABLE
		1893	async_pending = 0;
		1894	#endif
		1895	pipe_write_skipped = 0;
		1896	pipe_write_wanted = 0;
		1897	#if EV_USE_INOTIFY
		1898	fs_fd = flags & EVFLAG_NOINOTIFY ? -1 : -2;
		1899	#endif
		1900	#if EV_USE_SIGNALFD
		1901	sigfd = flags & EVFLAG_SIGNALFD ? -2 : -1;
		1902	#endif
		1903
		1904	if (!(flags & EVBACKEND_MASK))
1113	flags |= ev_recommended_backends ();	1905	flags |= ev_recommended_backends ();
1114		1906
		1907	#if EV_USE_IOCP
		1908	if (!backend && (flags & EVBACKEND_IOCP )) backend = iocp_init (EV_A_ flags);
		1909	#endif
1115	#if EV_USE_PORT	1910	#if EV_USE_PORT
1116	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);	1911	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
1117	#endif	1912	#endif
1118	#if EV_USE_KQUEUE	1913	#if EV_USE_KQUEUE
1119	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);	1914	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
…		…
1126	#endif	1921	#endif
1127	#if EV_USE_SELECT	1922	#if EV_USE_SELECT
1128	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);	1923	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
1129	#endif	1924	#endif
1130		1925
		1926	ev_prepare_init (&pending_w, pendingcb);
		1927
		1928	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1131	ev_init (&pipeev, pipecb);	1929	ev_init (&pipe_w, pipecb);
1132	ev_set_priority (&pipeev, EV_MAXPRI);	1930	ev_set_priority (&pipe_w, EV_MAXPRI);
		1931	#endif
1133	}	1932	}
1134	}	1933	}
1135		1934
1136	static void noinline	1935	/* free up a loop structure */
		1936	void ecb_cold
1137	loop_destroy (EV_P)	1937	ev_loop_destroy (EV_P)
1138	{	1938	{
1139	int i;	1939	int i;
1140		1940
		1941	#if EV_MULTIPLICITY
		1942	/* mimic free (0) */
		1943	if (!EV_A)
		1944	return;
		1945	#endif
		1946
		1947	#if EV_CLEANUP_ENABLE
		1948	/* queue cleanup watchers (and execute them) */
		1949	if (expect_false (cleanupcnt))
		1950	{
		1951	queue_events (EV_A_ (W *)cleanups, cleanupcnt, EV_CLEANUP);
		1952	EV_INVOKE_PENDING;
		1953	}
		1954	#endif
		1955
		1956	#if EV_CHILD_ENABLE
		1957	if (ev_is_active (&childev))
		1958	{
		1959	ev_ref (EV_A); /* child watcher */
		1960	ev_signal_stop (EV_A_ &childev);
		1961	}
		1962	#endif
		1963
1141	if (ev_is_active (&pipeev))	1964	if (ev_is_active (&pipe_w))
1142	{	1965	{
1143	ev_ref (EV_A); /* signal watcher */	1966	/*ev_ref (EV_A);*/
1144	ev_io_stop (EV_A_ &pipeev);	1967	/*ev_io_stop (EV_A_ &pipe_w);*/
1145		1968
1146	close (evpipe [0]); evpipe [0] = 0;	1969	#if EV_USE_EVENTFD
1147	close (evpipe [1]); evpipe [1] = 0;	1970	if (evfd >= 0)
		1971	close (evfd);
		1972	#endif
		1973
		1974	if (evpipe [0] >= 0)
		1975	{
		1976	EV_WIN32_CLOSE_FD (evpipe [0]);
		1977	EV_WIN32_CLOSE_FD (evpipe [1]);
		1978	}
1148	}	1979	}
		1980
		1981	#if EV_USE_SIGNALFD
		1982	if (ev_is_active (&sigfd_w))
		1983	close (sigfd);
		1984	#endif
1149		1985
1150	#if EV_USE_INOTIFY	1986	#if EV_USE_INOTIFY
1151	if (fs_fd >= 0)	1987	if (fs_fd >= 0)
1152	close (fs_fd);	1988	close (fs_fd);
1153	#endif	1989	#endif
1154		1990
1155	if (backend_fd >= 0)	1991	if (backend_fd >= 0)
1156	close (backend_fd);	1992	close (backend_fd);
1157		1993
		1994	#if EV_USE_IOCP
		1995	if (backend == EVBACKEND_IOCP ) iocp_destroy (EV_A);
		1996	#endif
1158	#if EV_USE_PORT	1997	#if EV_USE_PORT
1159	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);	1998	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
1160	#endif	1999	#endif
1161	#if EV_USE_KQUEUE	2000	#if EV_USE_KQUEUE
1162	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);	2001	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
…		…
1177	#if EV_IDLE_ENABLE	2016	#if EV_IDLE_ENABLE
1178	array_free (idle, [i]);	2017	array_free (idle, [i]);
1179	#endif	2018	#endif
1180	}	2019	}
1181		2020
1182	ev_free (anfds); anfdmax = 0;	2021	ev_free (anfds); anfds = 0; anfdmax = 0;
1183		2022
1184	/* have to use the microsoft-never-gets-it-right macro */	2023	/* have to use the microsoft-never-gets-it-right macro */
		2024	array_free (rfeed, EMPTY);
1185	array_free (fdchange, EMPTY);	2025	array_free (fdchange, EMPTY);
1186	array_free (timer, EMPTY);	2026	array_free (timer, EMPTY);
1187	#if EV_PERIODIC_ENABLE	2027	#if EV_PERIODIC_ENABLE
1188	array_free (periodic, EMPTY);	2028	array_free (periodic, EMPTY);
1189	#endif	2029	#endif
1190	#if EV_FORK_ENABLE	2030	#if EV_FORK_ENABLE
1191	array_free (fork, EMPTY);	2031	array_free (fork, EMPTY);
1192	#endif	2032	#endif
		2033	#if EV_CLEANUP_ENABLE
		2034	array_free (cleanup, EMPTY);
		2035	#endif
1193	array_free (prepare, EMPTY);	2036	array_free (prepare, EMPTY);
1194	array_free (check, EMPTY);	2037	array_free (check, EMPTY);
1195	#if EV_ASYNC_ENABLE	2038	#if EV_ASYNC_ENABLE
1196	array_free (async, EMPTY);	2039	array_free (async, EMPTY);
1197	#endif	2040	#endif
1198		2041
1199	backend = 0;	2042	backend = 0;
1200	}
1201		2043
		2044	#if EV_MULTIPLICITY
		2045	if (ev_is_default_loop (EV_A))
		2046	#endif
		2047	ev_default_loop_ptr = 0;
		2048	#if EV_MULTIPLICITY
		2049	else
		2050	ev_free (EV_A);
		2051	#endif
		2052	}
		2053
		2054	#if EV_USE_INOTIFY
1202	void inline_size infy_fork (EV_P);	2055	inline_size void infy_fork (EV_P);
		2056	#endif
1203		2057
1204	void inline_size	2058	inline_size void
1205	loop_fork (EV_P)	2059	loop_fork (EV_P)
1206	{	2060	{
1207	#if EV_USE_PORT	2061	#if EV_USE_PORT
1208	if (backend == EVBACKEND_PORT ) port_fork (EV_A);	2062	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
1209	#endif	2063	#endif
…		…
1215	#endif	2069	#endif
1216	#if EV_USE_INOTIFY	2070	#if EV_USE_INOTIFY
1217	infy_fork (EV_A);	2071	infy_fork (EV_A);
1218	#endif	2072	#endif
1219		2073
1220	if (ev_is_active (&pipeev))	2074	if (ev_is_active (&pipe_w))
1221	{	2075	{
1222	/* this "locks" the handlers against writing to the pipe */	2076	/* pipe_write_wanted must be false now, so modifying fd vars should be safe */
1223	/* while we modify the fd vars */
1224	gotsig = 1;
1225	#if EV_ASYNC_ENABLE
1226	gotasync = 1;
1227	#endif
1228		2077
1229	ev_ref (EV_A);	2078	ev_ref (EV_A);
1230	ev_io_stop (EV_A_ &pipeev);	2079	ev_io_stop (EV_A_ &pipe_w);
1231	close (evpipe [0]);
1232	close (evpipe [1]);
1233		2080
		2081	#if EV_USE_EVENTFD
		2082	if (evfd >= 0)
		2083	close (evfd);
		2084	#endif
		2085
		2086	if (evpipe [0] >= 0)
		2087	{
		2088	EV_WIN32_CLOSE_FD (evpipe [0]);
		2089	EV_WIN32_CLOSE_FD (evpipe [1]);
		2090	}
		2091
		2092	#if EV_SIGNAL_ENABLE || EV_ASYNC_ENABLE
1234	evpipe_init (EV_A);	2093	evpipe_init (EV_A);
1235	/* now iterate over everything, in case we missed something */	2094	/* now iterate over everything, in case we missed something */
1236	pipecb (EV_A_ &pipeev, EV_READ);	2095	pipecb (EV_A_ &pipe_w, EV_READ);
		2096	#endif
1237	}	2097	}
1238		2098
1239	postfork = 0;	2099	postfork = 0;
1240	}	2100	}
1241		2101
1242	#if EV_MULTIPLICITY	2102	#if EV_MULTIPLICITY
		2103
1243	struct ev_loop *	2104	struct ev_loop * ecb_cold
1244	ev_loop_new (unsigned int flags)	2105	ev_loop_new (unsigned int flags)
1245	{	2106	{
1246	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));	2107	EV_P = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
1247		2108
1248	memset (loop, 0, sizeof (struct ev_loop));	2109	memset (EV_A, 0, sizeof (struct ev_loop));
1249
1250	loop_init (EV_A_ flags);	2110	loop_init (EV_A_ flags);
1251		2111
1252	if (ev_backend (EV_A))	2112	if (ev_backend (EV_A))
1253	return loop;	2113	return EV_A;
1254		2114
		2115	ev_free (EV_A);
1255	return 0;	2116	return 0;
1256	}	2117	}
1257		2118
1258	void	2119	#endif /* multiplicity */
1259	ev_loop_destroy (EV_P)
1260	{
1261	loop_destroy (EV_A);
1262	ev_free (loop);
1263	}
1264		2120
1265	void	2121	#if EV_VERIFY
1266	ev_loop_fork (EV_P)	2122	static void noinline ecb_cold
		2123	verify_watcher (EV_P_ W w)
1267	{	2124	{
1268	postfork = 1; /* must be in line with ev_default_fork */	2125	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
1269	}
1270		2126
		2127	if (w->pending)
		2128	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		2129	}
		2130
		2131	static void noinline ecb_cold
		2132	verify_heap (EV_P_ ANHE *heap, int N)
		2133	{
		2134	int i;
		2135
		2136	for (i = HEAP0; i < N + HEAP0; ++i)
		2137	{
		2138	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		2139	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		2140	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		2141
		2142	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		2143	}
		2144	}
		2145
		2146	static void noinline ecb_cold
		2147	array_verify (EV_P_ W *ws, int cnt)
		2148	{
		2149	while (cnt--)
		2150	{
		2151	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		2152	verify_watcher (EV_A_ ws [cnt]);
		2153	}
		2154	}
		2155	#endif
		2156
		2157	#if EV_FEATURE_API
		2158	void ecb_cold
		2159	ev_verify (EV_P)
		2160	{
		2161	#if EV_VERIFY
		2162	int i;
		2163	WL w;
		2164
		2165	assert (activecnt >= -1);
		2166
		2167	assert (fdchangemax >= fdchangecnt);
		2168	for (i = 0; i < fdchangecnt; ++i)
		2169	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		2170
		2171	assert (anfdmax >= 0);
		2172	for (i = 0; i < anfdmax; ++i)
		2173	for (w = anfds [i].head; w; w = w->next)
		2174	{
		2175	verify_watcher (EV_A_ (W)w);
		2176	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		2177	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		2178	}
		2179
		2180	assert (timermax >= timercnt);
		2181	verify_heap (EV_A_ timers, timercnt);
		2182
		2183	#if EV_PERIODIC_ENABLE
		2184	assert (periodicmax >= periodiccnt);
		2185	verify_heap (EV_A_ periodics, periodiccnt);
		2186	#endif
		2187
		2188	for (i = NUMPRI; i--; )
		2189	{
		2190	assert (pendingmax [i] >= pendingcnt [i]);
		2191	#if EV_IDLE_ENABLE
		2192	assert (idleall >= 0);
		2193	assert (idlemax [i] >= idlecnt [i]);
		2194	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		2195	#endif
		2196	}
		2197
		2198	#if EV_FORK_ENABLE
		2199	assert (forkmax >= forkcnt);
		2200	array_verify (EV_A_ (W *)forks, forkcnt);
		2201	#endif
		2202
		2203	#if EV_CLEANUP_ENABLE
		2204	assert (cleanupmax >= cleanupcnt);
		2205	array_verify (EV_A_ (W *)cleanups, cleanupcnt);
		2206	#endif
		2207
		2208	#if EV_ASYNC_ENABLE
		2209	assert (asyncmax >= asynccnt);
		2210	array_verify (EV_A_ (W *)asyncs, asynccnt);
		2211	#endif
		2212
		2213	#if EV_PREPARE_ENABLE
		2214	assert (preparemax >= preparecnt);
		2215	array_verify (EV_A_ (W *)prepares, preparecnt);
		2216	#endif
		2217
		2218	#if EV_CHECK_ENABLE
		2219	assert (checkmax >= checkcnt);
		2220	array_verify (EV_A_ (W *)checks, checkcnt);
		2221	#endif
		2222
		2223	# if 0
		2224	#if EV_CHILD_ENABLE
		2225	for (w = (ev_child *)childs [chain & ((EV_PID_HASHSIZE) - 1)]; w; w = (ev_child *)((WL)w)->next)
		2226	for (signum = EV_NSIG; signum--; ) if (signals [signum].pending)
		2227	#endif
		2228	# endif
		2229	#endif
		2230	}
1271	#endif	2231	#endif
1272		2232
1273	#if EV_MULTIPLICITY	2233	#if EV_MULTIPLICITY
1274	struct ev_loop *	2234	struct ev_loop * ecb_cold
1275	ev_default_loop_init (unsigned int flags)
1276	#else	2235	#else
1277	int	2236	int
		2237	#endif
1278	ev_default_loop (unsigned int flags)	2238	ev_default_loop (unsigned int flags)
1279	#endif
1280	{	2239	{
1281	if (!ev_default_loop_ptr)	2240	if (!ev_default_loop_ptr)
1282	{	2241	{
1283	#if EV_MULTIPLICITY	2242	#if EV_MULTIPLICITY
1284	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;	2243	EV_P = ev_default_loop_ptr = &default_loop_struct;
1285	#else	2244	#else
1286	ev_default_loop_ptr = 1;	2245	ev_default_loop_ptr = 1;
1287	#endif	2246	#endif
1288		2247
1289	loop_init (EV_A_ flags);	2248	loop_init (EV_A_ flags);
1290		2249
1291	if (ev_backend (EV_A))	2250	if (ev_backend (EV_A))
1292	{	2251	{
1293	#ifndef _WIN32	2252	#if EV_CHILD_ENABLE
1294	ev_signal_init (&childev, childcb, SIGCHLD);	2253	ev_signal_init (&childev, childcb, SIGCHLD);
1295	ev_set_priority (&childev, EV_MAXPRI);	2254	ev_set_priority (&childev, EV_MAXPRI);
1296	ev_signal_start (EV_A_ &childev);	2255	ev_signal_start (EV_A_ &childev);
1297	ev_unref (EV_A); /* child watcher should not keep loop alive */	2256	ev_unref (EV_A); /* child watcher should not keep loop alive */
1298	#endif	2257	#endif
…		…
1303		2262
1304	return ev_default_loop_ptr;	2263	return ev_default_loop_ptr;
1305	}	2264	}
1306		2265
1307	void	2266	void
1308	ev_default_destroy (void)	2267	ev_loop_fork (EV_P)
1309	{	2268	{
1310	#if EV_MULTIPLICITY
1311	struct ev_loop *loop = ev_default_loop_ptr;
1312	#endif
1313
1314	#ifndef _WIN32
1315	ev_ref (EV_A); /* child watcher */
1316	ev_signal_stop (EV_A_ &childev);
1317	#endif
1318
1319	loop_destroy (EV_A);
1320	}
1321
1322	void
1323	ev_default_fork (void)
1324	{
1325	#if EV_MULTIPLICITY
1326	struct ev_loop *loop = ev_default_loop_ptr;
1327	#endif
1328
1329	if (backend)
1330	postfork = 1; /* must be in line with ev_loop_fork */	2269	postfork = 1; /* must be in line with ev_default_fork */
1331	}	2270	}
1332		2271
1333	/*****************************************************************************/	2272	/*****************************************************************************/
1334		2273
1335	void	2274	void
1336	ev_invoke (EV_P_ void *w, int revents)	2275	ev_invoke (EV_P_ void *w, int revents)
1337	{	2276	{
1338	EV_CB_INVOKE ((W)w, revents);	2277	EV_CB_INVOKE ((W)w, revents);
1339	}	2278	}
1340		2279
1341	void inline_speed	2280	unsigned int
1342	call_pending (EV_P)	2281	ev_pending_count (EV_P)
		2282	{
		2283	int pri;
		2284	unsigned int count = 0;
		2285
		2286	for (pri = NUMPRI; pri--; )
		2287	count += pendingcnt [pri];
		2288
		2289	return count;
		2290	}
		2291
		2292	void noinline
		2293	ev_invoke_pending (EV_P)
1343	{	2294	{
1344	int pri;	2295	int pri;
1345		2296
1346	for (pri = NUMPRI; pri--; )	2297	for (pri = NUMPRI; pri--; )
1347	while (pendingcnt [pri])	2298	while (pendingcnt [pri])
1348	{	2299	{
1349	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	2300	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
1350		2301
1351	if (expect_true (p->w))
1352	{
1353	/*assert (("non-pending watcher on pending list", p->w->pending));*/
1354
1355	p->w->pending = 0;	2302	p->w->pending = 0;
1356	EV_CB_INVOKE (p->w, p->events);	2303	EV_CB_INVOKE (p->w, p->events);
1357	}	2304	EV_FREQUENT_CHECK;
1358	}	2305	}
1359	}	2306	}
1360		2307
1361	void inline_size
1362	timers_reify (EV_P)
1363	{
1364	while (timercnt && ((WT)timers [0])->at <= mn_now)
1365	{
1366	ev_timer *w = (ev_timer *)timers [0];
1367
1368	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
1369
1370	/* first reschedule or stop timer */
1371	if (w->repeat)
1372	{
1373	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
1374
1375	((WT)w)->at += w->repeat;
1376	if (((WT)w)->at < mn_now)
1377	((WT)w)->at = mn_now;
1378
1379	downheap (timers, timercnt, 0);
1380	}
1381	else
1382	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
1383
1384	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
1385	}
1386	}
1387
1388	#if EV_PERIODIC_ENABLE
1389	void inline_size
1390	periodics_reify (EV_P)
1391	{
1392	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
1393	{
1394	ev_periodic *w = (ev_periodic *)periodics [0];
1395
1396	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
1397
1398	/* first reschedule or stop timer */
1399	if (w->reschedule_cb)
1400	{
1401	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
1402	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
1403	downheap (periodics, periodiccnt, 0);
1404	}
1405	else if (w->interval)
1406	{
1407	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1408	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
1409	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
1410	downheap (periodics, periodiccnt, 0);
1411	}
1412	else
1413	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
1414
1415	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
1416	}
1417	}
1418
1419	static void noinline
1420	periodics_reschedule (EV_P)
1421	{
1422	int i;
1423
1424	/* adjust periodics after time jump */
1425	for (i = 0; i < periodiccnt; ++i)
1426	{
1427	ev_periodic *w = (ev_periodic *)periodics [i];
1428
1429	if (w->reschedule_cb)
1430	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
1431	else if (w->interval)
1432	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1433	}
1434
1435	/* now rebuild the heap */
1436	for (i = periodiccnt >> 1; i--; )
1437	downheap (periodics, periodiccnt, i);
1438	}
1439	#endif
1440
1441	#if EV_IDLE_ENABLE	2308	#if EV_IDLE_ENABLE
1442	void inline_size	2309	/* make idle watchers pending. this handles the "call-idle */
		2310	/* only when higher priorities are idle" logic */
		2311	inline_size void
1443	idle_reify (EV_P)	2312	idle_reify (EV_P)
1444	{	2313	{
1445	if (expect_false (idleall))	2314	if (expect_false (idleall))
1446	{	2315	{
1447	int pri;	2316	int pri;
…		…
1459	}	2328	}
1460	}	2329	}
1461	}	2330	}
1462	#endif	2331	#endif
1463		2332
1464	void inline_speed	2333	/* make timers pending */
		2334	inline_size void
		2335	timers_reify (EV_P)
		2336	{
		2337	EV_FREQUENT_CHECK;
		2338
		2339	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
		2340	{
		2341	do
		2342	{
		2343	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		2344
		2345	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		2346
		2347	/* first reschedule or stop timer */
		2348	if (w->repeat)
		2349	{
		2350	ev_at (w) += w->repeat;
		2351	if (ev_at (w) < mn_now)
		2352	ev_at (w) = mn_now;
		2353
		2354	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		2355
		2356	ANHE_at_cache (timers [HEAP0]);
		2357	downheap (timers, timercnt, HEAP0);
		2358	}
		2359	else
		2360	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		2361
		2362	EV_FREQUENT_CHECK;
		2363	feed_reverse (EV_A_ (W)w);
		2364	}
		2365	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		2366
		2367	feed_reverse_done (EV_A_ EV_TIMER);
		2368	}
		2369	}
		2370
		2371	#if EV_PERIODIC_ENABLE
		2372
		2373	static void noinline
		2374	periodic_recalc (EV_P_ ev_periodic *w)
		2375	{
		2376	ev_tstamp interval = w->interval > MIN_INTERVAL ? w->interval : MIN_INTERVAL;
		2377	ev_tstamp at = w->offset + interval * ev_floor ((ev_rt_now - w->offset) / interval);
		2378
		2379	/* the above almost always errs on the low side */
		2380	while (at <= ev_rt_now)
		2381	{
		2382	ev_tstamp nat = at + w->interval;
		2383
		2384	/* when resolution fails us, we use ev_rt_now */
		2385	if (expect_false (nat == at))
		2386	{
		2387	at = ev_rt_now;
		2388	break;
		2389	}
		2390
		2391	at = nat;
		2392	}
		2393
		2394	ev_at (w) = at;
		2395	}
		2396
		2397	/* make periodics pending */
		2398	inline_size void
		2399	periodics_reify (EV_P)
		2400	{
		2401	EV_FREQUENT_CHECK;
		2402
		2403	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
		2404	{
		2405	int feed_count = 0;
		2406
		2407	do
		2408	{
		2409	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		2410
		2411	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		2412
		2413	/* first reschedule or stop timer */
		2414	if (w->reschedule_cb)
		2415	{
		2416	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2417
		2418	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		2419
		2420	ANHE_at_cache (periodics [HEAP0]);
		2421	downheap (periodics, periodiccnt, HEAP0);
		2422	}
		2423	else if (w->interval)
		2424	{
		2425	periodic_recalc (EV_A_ w);
		2426	ANHE_at_cache (periodics [HEAP0]);
		2427	downheap (periodics, periodiccnt, HEAP0);
		2428	}
		2429	else
		2430	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		2431
		2432	EV_FREQUENT_CHECK;
		2433	feed_reverse (EV_A_ (W)w);
		2434	}
		2435	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		2436
		2437	feed_reverse_done (EV_A_ EV_PERIODIC);
		2438	}
		2439	}
		2440
		2441	/* simply recalculate all periodics */
		2442	/* TODO: maybe ensure that at least one event happens when jumping forward? */
		2443	static void noinline ecb_cold
		2444	periodics_reschedule (EV_P)
		2445	{
		2446	int i;
		2447
		2448	/* adjust periodics after time jump */
		2449	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		2450	{
		2451	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		2452
		2453	if (w->reschedule_cb)
		2454	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2455	else if (w->interval)
		2456	periodic_recalc (EV_A_ w);
		2457
		2458	ANHE_at_cache (periodics [i]);
		2459	}
		2460
		2461	reheap (periodics, periodiccnt);
		2462	}
		2463	#endif
		2464
		2465	/* adjust all timers by a given offset */
		2466	static void noinline ecb_cold
		2467	timers_reschedule (EV_P_ ev_tstamp adjust)
		2468	{
		2469	int i;
		2470
		2471	for (i = 0; i < timercnt; ++i)
		2472	{
		2473	ANHE *he = timers + i + HEAP0;
		2474	ANHE_w (*he)->at += adjust;
		2475	ANHE_at_cache (*he);
		2476	}
		2477	}
		2478
		2479	/* fetch new monotonic and realtime times from the kernel */
		2480	/* also detect if there was a timejump, and act accordingly */
		2481	inline_speed void
1465	time_update (EV_P_ ev_tstamp max_block)	2482	time_update (EV_P_ ev_tstamp max_block)
1466	{	2483	{
1467	int i;
1468
1469	#if EV_USE_MONOTONIC	2484	#if EV_USE_MONOTONIC
1470	if (expect_true (have_monotonic))	2485	if (expect_true (have_monotonic))
1471	{	2486	{
		2487	int i;
1472	ev_tstamp odiff = rtmn_diff;	2488	ev_tstamp odiff = rtmn_diff;
1473		2489
1474	mn_now = get_clock ();	2490	mn_now = get_clock ();
1475		2491
1476	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */	2492	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
…		…
1492	* doesn't hurt either as we only do this on time-jumps or	2508	* doesn't hurt either as we only do this on time-jumps or
1493	* in the unlikely event of having been preempted here.	2509	* in the unlikely event of having been preempted here.
1494	*/	2510	*/
1495	for (i = 4; --i; )	2511	for (i = 4; --i; )
1496	{	2512	{
		2513	ev_tstamp diff;
1497	rtmn_diff = ev_rt_now - mn_now;	2514	rtmn_diff = ev_rt_now - mn_now;
1498		2515
1499	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	2516	diff = odiff - rtmn_diff;
		2517
		2518	if (expect_true ((diff < 0. ? -diff : diff) < MIN_TIMEJUMP))
1500	return; /* all is well */	2519	return; /* all is well */
1501		2520
1502	ev_rt_now = ev_time ();	2521	ev_rt_now = ev_time ();
1503	mn_now = get_clock ();	2522	mn_now = get_clock ();
1504	now_floor = mn_now;	2523	now_floor = mn_now;
1505	}	2524	}
1506		2525
		2526	/* no timer adjustment, as the monotonic clock doesn't jump */
		2527	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1507	# if EV_PERIODIC_ENABLE	2528	# if EV_PERIODIC_ENABLE
1508	periodics_reschedule (EV_A);	2529	periodics_reschedule (EV_A);
1509	# endif	2530	# endif
1510	/* no timer adjustment, as the monotonic clock doesn't jump */
1511	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1512	}	2531	}
1513	else	2532	else
1514	#endif	2533	#endif
1515	{	2534	{
1516	ev_rt_now = ev_time ();	2535	ev_rt_now = ev_time ();
1517		2536
1518	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))	2537	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
1519	{	2538	{
		2539	/* adjust timers. this is easy, as the offset is the same for all of them */
		2540	timers_reschedule (EV_A_ ev_rt_now - mn_now);
1520	#if EV_PERIODIC_ENABLE	2541	#if EV_PERIODIC_ENABLE
1521	periodics_reschedule (EV_A);	2542	periodics_reschedule (EV_A);
1522	#endif	2543	#endif
1523	/* adjust timers. this is easy, as the offset is the same for all of them */
1524	for (i = 0; i < timercnt; ++i)
1525	((WT)timers [i])->at += ev_rt_now - mn_now;
1526	}	2544	}
1527		2545
1528	mn_now = ev_rt_now;	2546	mn_now = ev_rt_now;
1529	}	2547	}
1530	}	2548	}
1531		2549
1532	void	2550	void
1533	ev_ref (EV_P)
1534	{
1535	++activecnt;
1536	}
1537
1538	void
1539	ev_unref (EV_P)
1540	{
1541	--activecnt;
1542	}
1543
1544	static int loop_done;
1545
1546	void
1547	ev_loop (EV_P_ int flags)	2551	ev_run (EV_P_ int flags)
1548	{	2552	{
1549	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)	2553	#if EV_FEATURE_API
1550	? EVUNLOOP_ONE	2554	++loop_depth;
1551	: EVUNLOOP_CANCEL;	2555	#endif
1552		2556
		2557	assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
		2558
		2559	loop_done = EVBREAK_CANCEL;
		2560
1553	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */	2561	EV_INVOKE_PENDING; /* in case we recurse, ensure ordering stays nice and clean */
1554		2562
1555	do	2563	do
1556	{	2564	{
		2565	#if EV_VERIFY >= 2
		2566	ev_verify (EV_A);
		2567	#endif
		2568
1557	#ifndef _WIN32	2569	#ifndef _WIN32
1558	if (expect_false (curpid)) /* penalise the forking check even more */	2570	if (expect_false (curpid)) /* penalise the forking check even more */
1559	if (expect_false (getpid () != curpid))	2571	if (expect_false (getpid () != curpid))
1560	{	2572	{
1561	curpid = getpid ();	2573	curpid = getpid ();
…		…
1567	/* we might have forked, so queue fork handlers */	2579	/* we might have forked, so queue fork handlers */
1568	if (expect_false (postfork))	2580	if (expect_false (postfork))
1569	if (forkcnt)	2581	if (forkcnt)
1570	{	2582	{
1571	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);	2583	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
1572	call_pending (EV_A);	2584	EV_INVOKE_PENDING;
1573	}	2585	}
1574	#endif	2586	#endif
1575		2587
		2588	#if EV_PREPARE_ENABLE
1576	/* queue prepare watchers (and execute them) */	2589	/* queue prepare watchers (and execute them) */
1577	if (expect_false (preparecnt))	2590	if (expect_false (preparecnt))
1578	{	2591	{
1579	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2592	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
1580	call_pending (EV_A);	2593	EV_INVOKE_PENDING;
1581	}	2594	}
		2595	#endif
1582		2596
1583	if (expect_false (!activecnt))	2597	if (expect_false (loop_done))
1584	break;	2598	break;
1585		2599
1586	/* we might have forked, so reify kernel state if necessary */	2600	/* we might have forked, so reify kernel state if necessary */
1587	if (expect_false (postfork))	2601	if (expect_false (postfork))
1588	loop_fork (EV_A);	2602	loop_fork (EV_A);
…		…
1593	/* calculate blocking time */	2607	/* calculate blocking time */
1594	{	2608	{
1595	ev_tstamp waittime = 0.;	2609	ev_tstamp waittime = 0.;
1596	ev_tstamp sleeptime = 0.;	2610	ev_tstamp sleeptime = 0.;
1597		2611
		2612	/* remember old timestamp for io_blocktime calculation */
		2613	ev_tstamp prev_mn_now = mn_now;
		2614
		2615	/* update time to cancel out callback processing overhead */
		2616	time_update (EV_A_ 1e100);
		2617
		2618	/* from now on, we want a pipe-wake-up */
		2619	pipe_write_wanted = 1;
		2620
		2621	ECB_MEMORY_FENCE; /* amke sure pipe_write_wanted is visible before we check for potential skips */
		2622
1598	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))	2623	if (expect_true (!(flags & EVRUN_NOWAIT || idleall || !activecnt || pipe_write_skipped)))
1599	{	2624	{
1600	/* update time to cancel out callback processing overhead */
1601	time_update (EV_A_ 1e100);
1602
1603	waittime = MAX_BLOCKTIME;	2625	waittime = MAX_BLOCKTIME;
1604		2626
1605	if (timercnt)	2627	if (timercnt)
1606	{	2628	{
1607	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;	2629	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now;
1608	if (waittime > to) waittime = to;	2630	if (waittime > to) waittime = to;
1609	}	2631	}
1610		2632
1611	#if EV_PERIODIC_ENABLE	2633	#if EV_PERIODIC_ENABLE
1612	if (periodiccnt)	2634	if (periodiccnt)
1613	{	2635	{
1614	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;	2636	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now;
1615	if (waittime > to) waittime = to;	2637	if (waittime > to) waittime = to;
1616	}	2638	}
1617	#endif	2639	#endif
1618		2640
		2641	/* don't let timeouts decrease the waittime below timeout_blocktime */
1619	if (expect_false (waittime < timeout_blocktime))	2642	if (expect_false (waittime < timeout_blocktime))
1620	waittime = timeout_blocktime;	2643	waittime = timeout_blocktime;
1621		2644
1622	sleeptime = waittime - backend_fudge;	2645	/* at this point, we NEED to wait, so we have to ensure */
		2646	/* to pass a minimum nonzero value to the backend */
		2647	if (expect_false (waittime < backend_mintime))
		2648	waittime = backend_mintime;
1623		2649
		2650	/* extra check because io_blocktime is commonly 0 */
1624	if (expect_true (sleeptime > io_blocktime))	2651	if (expect_false (io_blocktime))
1625	sleeptime = io_blocktime;
1626
1627	if (sleeptime)
1628	{	2652	{
		2653	sleeptime = io_blocktime - (mn_now - prev_mn_now);
		2654
		2655	if (sleeptime > waittime - backend_mintime)
		2656	sleeptime = waittime - backend_mintime;
		2657
		2658	if (expect_true (sleeptime > 0.))
		2659	{
1629	ev_sleep (sleeptime);	2660	ev_sleep (sleeptime);
1630	waittime -= sleeptime;	2661	waittime -= sleeptime;
		2662	}
1631	}	2663	}
1632	}	2664	}
1633		2665
		2666	#if EV_FEATURE_API
1634	++loop_count;	2667	++loop_count;
		2668	#endif
		2669	assert ((loop_done = EVBREAK_RECURSE, 1)); /* assert for side effect */
1635	backend_poll (EV_A_ waittime);	2670	backend_poll (EV_A_ waittime);
		2671	assert ((loop_done = EVBREAK_CANCEL, 1)); /* assert for side effect */
		2672
		2673	pipe_write_wanted = 0; /* just an optimsiation, no fence needed */
		2674
		2675	if (pipe_write_skipped)
		2676	{
		2677	assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
		2678	ev_feed_event (EV_A_ &pipe_w, EV_CUSTOM);
		2679	}
		2680
1636		2681
1637	/* update ev_rt_now, do magic */	2682	/* update ev_rt_now, do magic */
1638	time_update (EV_A_ waittime + sleeptime);	2683	time_update (EV_A_ waittime + sleeptime);
1639	}	2684	}
1640		2685
…		…
1647	#if EV_IDLE_ENABLE	2692	#if EV_IDLE_ENABLE
1648	/* queue idle watchers unless other events are pending */	2693	/* queue idle watchers unless other events are pending */
1649	idle_reify (EV_A);	2694	idle_reify (EV_A);
1650	#endif	2695	#endif
1651		2696
		2697	#if EV_CHECK_ENABLE
1652	/* queue check watchers, to be executed first */	2698	/* queue check watchers, to be executed first */
1653	if (expect_false (checkcnt))	2699	if (expect_false (checkcnt))
1654	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2700	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		2701	#endif
1655		2702
1656	call_pending (EV_A);	2703	EV_INVOKE_PENDING;
1657
1658	}	2704	}
1659	while (expect_true (activecnt && !loop_done));	2705	while (expect_true (
		2706	activecnt
		2707	&& !loop_done
		2708	&& !(flags & (EVRUN_ONCE | EVRUN_NOWAIT))
		2709	));
1660		2710
1661	if (loop_done == EVUNLOOP_ONE)	2711	if (loop_done == EVBREAK_ONE)
1662	loop_done = EVUNLOOP_CANCEL;	2712	loop_done = EVBREAK_CANCEL;
		2713
		2714	#if EV_FEATURE_API
		2715	--loop_depth;
		2716	#endif
1663	}	2717	}
1664		2718
1665	void	2719	void
1666	ev_unloop (EV_P_ int how)	2720	ev_break (EV_P_ int how)
1667	{	2721	{
1668	loop_done = how;	2722	loop_done = how;
1669	}	2723	}
1670		2724
		2725	void
		2726	ev_ref (EV_P)
		2727	{
		2728	++activecnt;
		2729	}
		2730
		2731	void
		2732	ev_unref (EV_P)
		2733	{
		2734	--activecnt;
		2735	}
		2736
		2737	void
		2738	ev_now_update (EV_P)
		2739	{
		2740	time_update (EV_A_ 1e100);
		2741	}
		2742
		2743	void
		2744	ev_suspend (EV_P)
		2745	{
		2746	ev_now_update (EV_A);
		2747	}
		2748
		2749	void
		2750	ev_resume (EV_P)
		2751	{
		2752	ev_tstamp mn_prev = mn_now;
		2753
		2754	ev_now_update (EV_A);
		2755	timers_reschedule (EV_A_ mn_now - mn_prev);
		2756	#if EV_PERIODIC_ENABLE
		2757	/* TODO: really do this? */
		2758	periodics_reschedule (EV_A);
		2759	#endif
		2760	}
		2761
1671	/*****************************************************************************/	2762	/*****************************************************************************/
		2763	/* singly-linked list management, used when the expected list length is short */
1672		2764
1673	void inline_size	2765	inline_size void
1674	wlist_add (WL *head, WL elem)	2766	wlist_add (WL *head, WL elem)
1675	{	2767	{
1676	elem->next = *head;	2768	elem->next = *head;
1677	*head = elem;	2769	*head = elem;
1678	}	2770	}
1679		2771
1680	void inline_size	2772	inline_size void
1681	wlist_del (WL *head, WL elem)	2773	wlist_del (WL *head, WL elem)
1682	{	2774	{
1683	while (*head)	2775	while (*head)
1684	{	2776	{
1685	if (*head == elem)	2777	if (expect_true (*head == elem))
1686	{	2778	{
1687	*head = elem->next;	2779	*head = elem->next;
1688	return;	2780	break;
1689	}	2781	}
1690		2782
1691	head = &(*head)->next;	2783	head = &(*head)->next;
1692	}	2784	}
1693	}	2785	}
1694		2786
1695	void inline_speed	2787	/* internal, faster, version of ev_clear_pending */
		2788	inline_speed void
1696	clear_pending (EV_P_ W w)	2789	clear_pending (EV_P_ W w)
1697	{	2790	{
1698	if (w->pending)	2791	if (w->pending)
1699	{	2792	{
1700	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2793	pendings [ABSPRI (w)][w->pending - 1].w = (W)&pending_w;
1701	w->pending = 0;	2794	w->pending = 0;
1702	}	2795	}
1703	}	2796	}
1704		2797
1705	int	2798	int
…		…
1709	int pending = w_->pending;	2802	int pending = w_->pending;
1710		2803
1711	if (expect_true (pending))	2804	if (expect_true (pending))
1712	{	2805	{
1713	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;	2806	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2807	p->w = (W)&pending_w;
1714	w_->pending = 0;	2808	w_->pending = 0;
1715	p->w = 0;
1716	return p->events;	2809	return p->events;
1717	}	2810	}
1718	else	2811	else
1719	return 0;	2812	return 0;
1720	}	2813	}
1721		2814
1722	void inline_size	2815	inline_size void
1723	pri_adjust (EV_P_ W w)	2816	pri_adjust (EV_P_ W w)
1724	{	2817	{
1725	int pri = w->priority;	2818	int pri = ev_priority (w);
1726	pri = pri < EV_MINPRI ? EV_MINPRI : pri;	2819	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
1727	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;	2820	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
1728	w->priority = pri;	2821	ev_set_priority (w, pri);
1729	}	2822	}
1730		2823
1731	void inline_speed	2824	inline_speed void
1732	ev_start (EV_P_ W w, int active)	2825	ev_start (EV_P_ W w, int active)
1733	{	2826	{
1734	pri_adjust (EV_A_ w);	2827	pri_adjust (EV_A_ w);
1735	w->active = active;	2828	w->active = active;
1736	ev_ref (EV_A);	2829	ev_ref (EV_A);
1737	}	2830	}
1738		2831
1739	void inline_size	2832	inline_size void
1740	ev_stop (EV_P_ W w)	2833	ev_stop (EV_P_ W w)
1741	{	2834	{
1742	ev_unref (EV_A);	2835	ev_unref (EV_A);
1743	w->active = 0;	2836	w->active = 0;
1744	}	2837	}
…		…
1751	int fd = w->fd;	2844	int fd = w->fd;
1752		2845
1753	if (expect_false (ev_is_active (w)))	2846	if (expect_false (ev_is_active (w)))
1754	return;	2847	return;
1755		2848
1756	assert (("ev_io_start called with negative fd", fd >= 0));	2849	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2850	assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2851
		2852	EV_FREQUENT_CHECK;
1757		2853
1758	ev_start (EV_A_ (W)w, 1);	2854	ev_start (EV_A_ (W)w, 1);
1759	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);	2855	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
1760	wlist_add (&anfds[fd].head, (WL)w);	2856	wlist_add (&anfds[fd].head, (WL)w);
1761		2857
1762	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);	2858	fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
1763	w->events &= ~EV_IOFDSET;	2859	w->events &= ~EV__IOFDSET;
		2860
		2861	EV_FREQUENT_CHECK;
1764	}	2862	}
1765		2863
1766	void noinline	2864	void noinline
1767	ev_io_stop (EV_P_ ev_io *w)	2865	ev_io_stop (EV_P_ ev_io *w)
1768	{	2866	{
1769	clear_pending (EV_A_ (W)w);	2867	clear_pending (EV_A_ (W)w);
1770	if (expect_false (!ev_is_active (w)))	2868	if (expect_false (!ev_is_active (w)))
1771	return;	2869	return;
1772		2870
1773	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));	2871	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2872
		2873	EV_FREQUENT_CHECK;
1774		2874
1775	wlist_del (&anfds[w->fd].head, (WL)w);	2875	wlist_del (&anfds[w->fd].head, (WL)w);
1776	ev_stop (EV_A_ (W)w);	2876	ev_stop (EV_A_ (W)w);
1777		2877
1778	fd_change (EV_A_ w->fd, 1);	2878	fd_change (EV_A_ w->fd, EV_ANFD_REIFY);
		2879
		2880	EV_FREQUENT_CHECK;
1779	}	2881	}
1780		2882
1781	void noinline	2883	void noinline
1782	ev_timer_start (EV_P_ ev_timer *w)	2884	ev_timer_start (EV_P_ ev_timer *w)
1783	{	2885	{
1784	if (expect_false (ev_is_active (w)))	2886	if (expect_false (ev_is_active (w)))
1785	return;	2887	return;
1786		2888
1787	((WT)w)->at += mn_now;	2889	ev_at (w) += mn_now;
1788		2890
1789	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2891	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1790		2892
		2893	EV_FREQUENT_CHECK;
		2894
		2895	++timercnt;
1791	ev_start (EV_A_ (W)w, ++timercnt);	2896	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1792	array_needsize (WT, timers, timermax, timercnt, EMPTY2);	2897	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1793	timers [timercnt - 1] = (WT)w;	2898	ANHE_w (timers [ev_active (w)]) = (WT)w;
1794	upheap (timers, timercnt - 1);	2899	ANHE_at_cache (timers [ev_active (w)]);
		2900	upheap (timers, ev_active (w));
1795		2901
		2902	EV_FREQUENT_CHECK;
		2903
1796	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/	2904	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
1797	}	2905	}
1798		2906
1799	void noinline	2907	void noinline
1800	ev_timer_stop (EV_P_ ev_timer *w)	2908	ev_timer_stop (EV_P_ ev_timer *w)
1801	{	2909	{
1802	clear_pending (EV_A_ (W)w);	2910	clear_pending (EV_A_ (W)w);
1803	if (expect_false (!ev_is_active (w)))	2911	if (expect_false (!ev_is_active (w)))
1804	return;	2912	return;
1805		2913
1806	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));	2914	EV_FREQUENT_CHECK;
1807		2915
1808	{	2916	{
1809	int active = ((W)w)->active;	2917	int active = ev_active (w);
1810		2918
		2919	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2920
		2921	--timercnt;
		2922
1811	if (expect_true (--active < --timercnt))	2923	if (expect_true (active < timercnt + HEAP0))
1812	{	2924	{
1813	timers [active] = timers [timercnt];	2925	timers [active] = timers [timercnt + HEAP0];
1814	adjustheap (timers, timercnt, active);	2926	adjustheap (timers, timercnt, active);
1815	}	2927	}
1816	}	2928	}
1817		2929
1818	((WT)w)->at -= mn_now;	2930	ev_at (w) -= mn_now;
1819		2931
1820	ev_stop (EV_A_ (W)w);	2932	ev_stop (EV_A_ (W)w);
		2933
		2934	EV_FREQUENT_CHECK;
1821	}	2935	}
1822		2936
1823	void noinline	2937	void noinline
1824	ev_timer_again (EV_P_ ev_timer *w)	2938	ev_timer_again (EV_P_ ev_timer *w)
1825	{	2939	{
		2940	EV_FREQUENT_CHECK;
		2941
1826	if (ev_is_active (w))	2942	if (ev_is_active (w))
1827	{	2943	{
1828	if (w->repeat)	2944	if (w->repeat)
1829	{	2945	{
1830	((WT)w)->at = mn_now + w->repeat;	2946	ev_at (w) = mn_now + w->repeat;
		2947	ANHE_at_cache (timers [ev_active (w)]);
1831	adjustheap (timers, timercnt, ((W)w)->active - 1);	2948	adjustheap (timers, timercnt, ev_active (w));
1832	}	2949	}
1833	else	2950	else
1834	ev_timer_stop (EV_A_ w);	2951	ev_timer_stop (EV_A_ w);
1835	}	2952	}
1836	else if (w->repeat)	2953	else if (w->repeat)
1837	{	2954	{
1838	w->at = w->repeat;	2955	ev_at (w) = w->repeat;
1839	ev_timer_start (EV_A_ w);	2956	ev_timer_start (EV_A_ w);
1840	}	2957	}
		2958
		2959	EV_FREQUENT_CHECK;
		2960	}
		2961
		2962	ev_tstamp
		2963	ev_timer_remaining (EV_P_ ev_timer *w)
		2964	{
		2965	return ev_at (w) - (ev_is_active (w) ? mn_now : 0.);
1841	}	2966	}
1842		2967
1843	#if EV_PERIODIC_ENABLE	2968	#if EV_PERIODIC_ENABLE
1844	void noinline	2969	void noinline
1845	ev_periodic_start (EV_P_ ev_periodic *w)	2970	ev_periodic_start (EV_P_ ev_periodic *w)
1846	{	2971	{
1847	if (expect_false (ev_is_active (w)))	2972	if (expect_false (ev_is_active (w)))
1848	return;	2973	return;
1849		2974
1850	if (w->reschedule_cb)	2975	if (w->reschedule_cb)
1851	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);	2976	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
1852	else if (w->interval)	2977	else if (w->interval)
1853	{	2978	{
1854	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2979	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1855	/* this formula differs from the one in periodic_reify because we do not always round up */	2980	periodic_recalc (EV_A_ w);
1856	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
1857	}	2981	}
1858	else	2982	else
1859	((WT)w)->at = w->offset;	2983	ev_at (w) = w->offset;
1860		2984
		2985	EV_FREQUENT_CHECK;
		2986
		2987	++periodiccnt;
1861	ev_start (EV_A_ (W)w, ++periodiccnt);	2988	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1862	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);	2989	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1863	periodics [periodiccnt - 1] = (WT)w;	2990	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1864	upheap (periodics, periodiccnt - 1);	2991	ANHE_at_cache (periodics [ev_active (w)]);
		2992	upheap (periodics, ev_active (w));
1865		2993
		2994	EV_FREQUENT_CHECK;
		2995
1866	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/	2996	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
1867	}	2997	}
1868		2998
1869	void noinline	2999	void noinline
1870	ev_periodic_stop (EV_P_ ev_periodic *w)	3000	ev_periodic_stop (EV_P_ ev_periodic *w)
1871	{	3001	{
1872	clear_pending (EV_A_ (W)w);	3002	clear_pending (EV_A_ (W)w);
1873	if (expect_false (!ev_is_active (w)))	3003	if (expect_false (!ev_is_active (w)))
1874	return;	3004	return;
1875		3005
1876	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));	3006	EV_FREQUENT_CHECK;
1877		3007
1878	{	3008	{
1879	int active = ((W)w)->active;	3009	int active = ev_active (w);
1880		3010
		3011	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		3012
		3013	--periodiccnt;
		3014
1881	if (expect_true (--active < --periodiccnt))	3015	if (expect_true (active < periodiccnt + HEAP0))
1882	{	3016	{
1883	periodics [active] = periodics [periodiccnt];	3017	periodics [active] = periodics [periodiccnt + HEAP0];
1884	adjustheap (periodics, periodiccnt, active);	3018	adjustheap (periodics, periodiccnt, active);
1885	}	3019	}
1886	}	3020	}
1887		3021
1888	ev_stop (EV_A_ (W)w);	3022	ev_stop (EV_A_ (W)w);
		3023
		3024	EV_FREQUENT_CHECK;
1889	}	3025	}
1890		3026
1891	void noinline	3027	void noinline
1892	ev_periodic_again (EV_P_ ev_periodic *w)	3028	ev_periodic_again (EV_P_ ev_periodic *w)
1893	{	3029	{
…		…
1899		3035
1900	#ifndef SA_RESTART	3036	#ifndef SA_RESTART
1901	# define SA_RESTART 0	3037	# define SA_RESTART 0
1902	#endif	3038	#endif
1903		3039
		3040	#if EV_SIGNAL_ENABLE
		3041
1904	void noinline	3042	void noinline
1905	ev_signal_start (EV_P_ ev_signal *w)	3043	ev_signal_start (EV_P_ ev_signal *w)
1906	{	3044	{
1907	#if EV_MULTIPLICITY
1908	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1909	#endif
1910	if (expect_false (ev_is_active (w)))	3045	if (expect_false (ev_is_active (w)))
1911	return;	3046	return;
1912		3047
1913	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	3048	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
1914		3049
1915	evpipe_init (EV_A);	3050	#if EV_MULTIPLICITY
		3051	assert (("libev: a signal must not be attached to two different loops",
		3052	!signals [w->signum - 1].loop || signals [w->signum - 1].loop == loop));
1916		3053
		3054	signals [w->signum - 1].loop = EV_A;
		3055	#endif
		3056
		3057	EV_FREQUENT_CHECK;
		3058
		3059	#if EV_USE_SIGNALFD
		3060	if (sigfd == -2)
1917	{	3061	{
1918	#ifndef _WIN32	3062	sigfd = signalfd (-1, &sigfd_set, SFD_NONBLOCK | SFD_CLOEXEC);
1919	sigset_t full, prev;	3063	if (sigfd < 0 && errno == EINVAL)
1920	sigfillset (&full);	3064	sigfd = signalfd (-1, &sigfd_set, 0); /* retry without flags */
1921	sigprocmask (SIG_SETMASK, &full, &prev);
1922	#endif
1923		3065
1924	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);	3066	if (sigfd >= 0)
		3067	{
		3068	fd_intern (sigfd); /* doing it twice will not hurt */
1925		3069
1926	#ifndef _WIN32	3070	sigemptyset (&sigfd_set);
1927	sigprocmask (SIG_SETMASK, &prev, 0);	3071
1928	#endif	3072	ev_io_init (&sigfd_w, sigfdcb, sigfd, EV_READ);
		3073	ev_set_priority (&sigfd_w, EV_MAXPRI);
		3074	ev_io_start (EV_A_ &sigfd_w);
		3075	ev_unref (EV_A); /* signalfd watcher should not keep loop alive */
		3076	}
1929	}	3077	}
		3078
		3079	if (sigfd >= 0)
		3080	{
		3081	/* TODO: check .head */
		3082	sigaddset (&sigfd_set, w->signum);
		3083	sigprocmask (SIG_BLOCK, &sigfd_set, 0);
		3084
		3085	signalfd (sigfd, &sigfd_set, 0);
		3086	}
		3087	#endif
1930		3088
1931	ev_start (EV_A_ (W)w, 1);	3089	ev_start (EV_A_ (W)w, 1);
1932	wlist_add (&signals [w->signum - 1].head, (WL)w);	3090	wlist_add (&signals [w->signum - 1].head, (WL)w);
1933		3091
1934	if (!((WL)w)->next)	3092	if (!((WL)w)->next)
		3093	# if EV_USE_SIGNALFD
		3094	if (sigfd < 0) /*TODO*/
		3095	# endif
1935	{	3096	{
1936	#if _WIN32	3097	# ifdef _WIN32
		3098	evpipe_init (EV_A);
		3099
1937	signal (w->signum, sighandler);	3100	signal (w->signum, ev_sighandler);
1938	#else	3101	# else
1939	struct sigaction sa;	3102	struct sigaction sa;
		3103
		3104	evpipe_init (EV_A);
		3105
1940	sa.sa_handler = sighandler;	3106	sa.sa_handler = ev_sighandler;
1941	sigfillset (&sa.sa_mask);	3107	sigfillset (&sa.sa_mask);
1942	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	3108	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1943	sigaction (w->signum, &sa, 0);	3109	sigaction (w->signum, &sa, 0);
		3110
		3111	if (origflags & EVFLAG_NOSIGMASK)
		3112	{
		3113	sigemptyset (&sa.sa_mask);
		3114	sigaddset (&sa.sa_mask, w->signum);
		3115	sigprocmask (SIG_UNBLOCK, &sa.sa_mask, 0);
		3116	}
1944	#endif	3117	#endif
1945	}	3118	}
		3119
		3120	EV_FREQUENT_CHECK;
1946	}	3121	}
1947		3122
1948	void noinline	3123	void noinline
1949	ev_signal_stop (EV_P_ ev_signal *w)	3124	ev_signal_stop (EV_P_ ev_signal *w)
1950	{	3125	{
1951	clear_pending (EV_A_ (W)w);	3126	clear_pending (EV_A_ (W)w);
1952	if (expect_false (!ev_is_active (w)))	3127	if (expect_false (!ev_is_active (w)))
1953	return;	3128	return;
1954		3129
		3130	EV_FREQUENT_CHECK;
		3131
1955	wlist_del (&signals [w->signum - 1].head, (WL)w);	3132	wlist_del (&signals [w->signum - 1].head, (WL)w);
1956	ev_stop (EV_A_ (W)w);	3133	ev_stop (EV_A_ (W)w);
1957		3134
1958	if (!signals [w->signum - 1].head)	3135	if (!signals [w->signum - 1].head)
		3136	{
		3137	#if EV_MULTIPLICITY
		3138	signals [w->signum - 1].loop = 0; /* unattach from signal */
		3139	#endif
		3140	#if EV_USE_SIGNALFD
		3141	if (sigfd >= 0)
		3142	{
		3143	sigset_t ss;
		3144
		3145	sigemptyset (&ss);
		3146	sigaddset (&ss, w->signum);
		3147	sigdelset (&sigfd_set, w->signum);
		3148
		3149	signalfd (sigfd, &sigfd_set, 0);
		3150	sigprocmask (SIG_UNBLOCK, &ss, 0);
		3151	}
		3152	else
		3153	#endif
1959	signal (w->signum, SIG_DFL);	3154	signal (w->signum, SIG_DFL);
		3155	}
		3156
		3157	EV_FREQUENT_CHECK;
1960	}	3158	}
		3159
		3160	#endif
		3161
		3162	#if EV_CHILD_ENABLE
1961		3163
1962	void	3164	void
1963	ev_child_start (EV_P_ ev_child *w)	3165	ev_child_start (EV_P_ ev_child *w)
1964	{	3166	{
1965	#if EV_MULTIPLICITY	3167	#if EV_MULTIPLICITY
1966	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));	3168	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1967	#endif	3169	#endif
1968	if (expect_false (ev_is_active (w)))	3170	if (expect_false (ev_is_active (w)))
1969	return;	3171	return;
1970		3172
		3173	EV_FREQUENT_CHECK;
		3174
1971	ev_start (EV_A_ (W)w, 1);	3175	ev_start (EV_A_ (W)w, 1);
1972	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3176	wlist_add (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
		3177
		3178	EV_FREQUENT_CHECK;
1973	}	3179	}
1974		3180
1975	void	3181	void
1976	ev_child_stop (EV_P_ ev_child *w)	3182	ev_child_stop (EV_P_ ev_child *w)
1977	{	3183	{
1978	clear_pending (EV_A_ (W)w);	3184	clear_pending (EV_A_ (W)w);
1979	if (expect_false (!ev_is_active (w)))	3185	if (expect_false (!ev_is_active (w)))
1980	return;	3186	return;
1981		3187
		3188	EV_FREQUENT_CHECK;
		3189
1982	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);	3190	wlist_del (&childs [w->pid & ((EV_PID_HASHSIZE) - 1)], (WL)w);
1983	ev_stop (EV_A_ (W)w);	3191	ev_stop (EV_A_ (W)w);
		3192
		3193	EV_FREQUENT_CHECK;
1984	}	3194	}
		3195
		3196	#endif
1985		3197
1986	#if EV_STAT_ENABLE	3198	#if EV_STAT_ENABLE
1987		3199
1988	# ifdef _WIN32	3200	# ifdef _WIN32
1989	# undef lstat	3201	# undef lstat
1990	# define lstat(a,b) _stati64 (a,b)	3202	# define lstat(a,b) _stati64 (a,b)
1991	# endif	3203	# endif
1992		3204
1993	#define DEF_STAT_INTERVAL 5.0074891	3205	#define DEF_STAT_INTERVAL 5.0074891
		3206	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
1994	#define MIN_STAT_INTERVAL 0.1074891	3207	#define MIN_STAT_INTERVAL 0.1074891
1995		3208
1996	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);	3209	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
1997		3210
1998	#if EV_USE_INOTIFY	3211	#if EV_USE_INOTIFY
1999	# define EV_INOTIFY_BUFSIZE 8192	3212
		3213	/* the * 2 is to allow for alignment padding, which for some reason is >> 8 */
		3214	# define EV_INOTIFY_BUFSIZE (sizeof (struct inotify_event) * 2 + NAME_MAX)
2000		3215
2001	static void noinline	3216	static void noinline
2002	infy_add (EV_P_ ev_stat *w)	3217	infy_add (EV_P_ ev_stat *w)
2003	{	3218	{
2004	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);	3219	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);
2005		3220
2006	if (w->wd < 0)	3221	if (w->wd >= 0)
		3222	{
		3223	struct statfs sfs;
		3224
		3225	/* now local changes will be tracked by inotify, but remote changes won't */
		3226	/* unless the filesystem is known to be local, we therefore still poll */
		3227	/* also do poll on <2.6.25, but with normal frequency */
		3228
		3229	if (!fs_2625)
		3230	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3231	else if (!statfs (w->path, &sfs)
		3232	&& (sfs.f_type == 0x1373 /* devfs */
		3233	|| sfs.f_type == 0xEF53 /* ext2/3 */
		3234	|| sfs.f_type == 0x3153464a /* jfs */
		3235	|| sfs.f_type == 0x52654973 /* reiser3 */
		3236	|| sfs.f_type == 0x01021994 /* tempfs */
		3237	|| sfs.f_type == 0x58465342 /* xfs */))
		3238	w->timer.repeat = 0.; /* filesystem is local, kernel new enough */
		3239	else
		3240	w->timer.repeat = w->interval ? w->interval : NFS_STAT_INTERVAL; /* remote, use reduced frequency */
2007	{	3241	}
2008	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */	3242	else
		3243	{
		3244	/* can't use inotify, continue to stat */
		3245	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
2009		3246
2010	/* monitor some parent directory for speedup hints */	3247	/* if path is not there, monitor some parent directory for speedup hints */
		3248	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		3249	/* but an efficiency issue only */
2011	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)	3250	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
2012	{	3251	{
2013	char path [4096];	3252	char path [4096];
2014	strcpy (path, w->path);	3253	strcpy (path, w->path);
2015		3254
…		…
2018	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF	3257	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
2019	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);	3258	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
2020		3259
2021	char *pend = strrchr (path, '/');	3260	char *pend = strrchr (path, '/');
2022		3261
2023	if (!pend)	3262	if (!pend || pend == path)
2024	break; /* whoops, no '/', complain to your admin */	3263	break;
2025		3264
2026	*pend = 0;	3265	*pend = 0;
2027	w->wd = inotify_add_watch (fs_fd, path, mask);	3266	w->wd = inotify_add_watch (fs_fd, path, mask);
2028	}	3267	}
2029	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));	3268	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
2030	}	3269	}
2031	}	3270	}
2032	else
2033	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
2034		3271
2035	if (w->wd >= 0)	3272	if (w->wd >= 0)
2036	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);	3273	wlist_add (&fs_hash [w->wd & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
		3274
		3275	/* now re-arm timer, if required */
		3276	if (ev_is_active (&w->timer)) ev_ref (EV_A);
		3277	ev_timer_again (EV_A_ &w->timer);
		3278	if (ev_is_active (&w->timer)) ev_unref (EV_A);
2037	}	3279	}
2038		3280
2039	static void noinline	3281	static void noinline
2040	infy_del (EV_P_ ev_stat *w)	3282	infy_del (EV_P_ ev_stat *w)
2041	{	3283	{
…		…
2044		3286
2045	if (wd < 0)	3287	if (wd < 0)
2046	return;	3288	return;
2047		3289
2048	w->wd = -2;	3290	w->wd = -2;
2049	slot = wd & (EV_INOTIFY_HASHSIZE - 1);	3291	slot = wd & ((EV_INOTIFY_HASHSIZE) - 1);
2050	wlist_del (&fs_hash [slot].head, (WL)w);	3292	wlist_del (&fs_hash [slot].head, (WL)w);
2051		3293
2052	/* remove this watcher, if others are watching it, they will rearm */	3294	/* remove this watcher, if others are watching it, they will rearm */
2053	inotify_rm_watch (fs_fd, wd);	3295	inotify_rm_watch (fs_fd, wd);
2054	}	3296	}
2055		3297
2056	static void noinline	3298	static void noinline
2057	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)	3299	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
2058	{	3300	{
2059	if (slot < 0)	3301	if (slot < 0)
2060	/* overflow, need to check for all hahs slots */	3302	/* overflow, need to check for all hash slots */
2061	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3303	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2062	infy_wd (EV_A_ slot, wd, ev);	3304	infy_wd (EV_A_ slot, wd, ev);
2063	else	3305	else
2064	{	3306	{
2065	WL w_;	3307	WL w_;
2066		3308
2067	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )	3309	for (w_ = fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head; w_; )
2068	{	3310	{
2069	ev_stat *w = (ev_stat *)w_;	3311	ev_stat *w = (ev_stat *)w_;
2070	w_ = w_->next; /* lets us remove this watcher and all before it */	3312	w_ = w_->next; /* lets us remove this watcher and all before it */
2071		3313
2072	if (w->wd == wd || wd == -1)	3314	if (w->wd == wd || wd == -1)
2073	{	3315	{
2074	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))	3316	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
2075	{	3317	{
		3318	wlist_del (&fs_hash [slot & ((EV_INOTIFY_HASHSIZE) - 1)].head, (WL)w);
2076	w->wd = -1;	3319	w->wd = -1;
2077	infy_add (EV_A_ w); /* re-add, no matter what */	3320	infy_add (EV_A_ w); /* re-add, no matter what */
2078	}	3321	}
2079		3322
2080	stat_timer_cb (EV_A_ &w->timer, 0);	3323	stat_timer_cb (EV_A_ &w->timer, 0);
…		…
2085		3328
2086	static void	3329	static void
2087	infy_cb (EV_P_ ev_io *w, int revents)	3330	infy_cb (EV_P_ ev_io *w, int revents)
2088	{	3331	{
2089	char buf [EV_INOTIFY_BUFSIZE];	3332	char buf [EV_INOTIFY_BUFSIZE];
2090	struct inotify_event *ev = (struct inotify_event *)buf;
2091	int ofs;	3333	int ofs;
2092	int len = read (fs_fd, buf, sizeof (buf));	3334	int len = read (fs_fd, buf, sizeof (buf));
2093		3335
2094	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)	3336	for (ofs = 0; ofs < len; )
		3337	{
		3338	struct inotify_event *ev = (struct inotify_event *)(buf + ofs);
2095	infy_wd (EV_A_ ev->wd, ev->wd, ev);	3339	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		3340	ofs += sizeof (struct inotify_event) + ev->len;
		3341	}
2096	}	3342	}
2097		3343
2098	void inline_size	3344	inline_size void ecb_cold
		3345	ev_check_2625 (EV_P)
		3346	{
		3347	/* kernels < 2.6.25 are borked
		3348	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		3349	*/
		3350	if (ev_linux_version () < 0x020619)
		3351	return;
		3352
		3353	fs_2625 = 1;
		3354	}
		3355
		3356	inline_size int
		3357	infy_newfd (void)
		3358	{
		3359	#if defined (IN_CLOEXEC) && defined (IN_NONBLOCK)
		3360	int fd = inotify_init1 (IN_CLOEXEC | IN_NONBLOCK);
		3361	if (fd >= 0)
		3362	return fd;
		3363	#endif
		3364	return inotify_init ();
		3365	}
		3366
		3367	inline_size void
2099	infy_init (EV_P)	3368	infy_init (EV_P)
2100	{	3369	{
2101	if (fs_fd != -2)	3370	if (fs_fd != -2)
2102	return;	3371	return;
2103		3372
		3373	fs_fd = -1;
		3374
		3375	ev_check_2625 (EV_A);
		3376
2104	fs_fd = inotify_init ();	3377	fs_fd = infy_newfd ();
2105		3378
2106	if (fs_fd >= 0)	3379	if (fs_fd >= 0)
2107	{	3380	{
		3381	fd_intern (fs_fd);
2108	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);	3382	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
2109	ev_set_priority (&fs_w, EV_MAXPRI);	3383	ev_set_priority (&fs_w, EV_MAXPRI);
2110	ev_io_start (EV_A_ &fs_w);	3384	ev_io_start (EV_A_ &fs_w);
		3385	ev_unref (EV_A);
2111	}	3386	}
2112	}	3387	}
2113		3388
2114	void inline_size	3389	inline_size void
2115	infy_fork (EV_P)	3390	infy_fork (EV_P)
2116	{	3391	{
2117	int slot;	3392	int slot;
2118		3393
2119	if (fs_fd < 0)	3394	if (fs_fd < 0)
2120	return;	3395	return;
2121		3396
		3397	ev_ref (EV_A);
		3398	ev_io_stop (EV_A_ &fs_w);
2122	close (fs_fd);	3399	close (fs_fd);
2123	fs_fd = inotify_init ();	3400	fs_fd = infy_newfd ();
2124		3401
		3402	if (fs_fd >= 0)
		3403	{
		3404	fd_intern (fs_fd);
		3405	ev_io_set (&fs_w, fs_fd, EV_READ);
		3406	ev_io_start (EV_A_ &fs_w);
		3407	ev_unref (EV_A);
		3408	}
		3409
2125	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)	3410	for (slot = 0; slot < (EV_INOTIFY_HASHSIZE); ++slot)
2126	{	3411	{
2127	WL w_ = fs_hash [slot].head;	3412	WL w_ = fs_hash [slot].head;
2128	fs_hash [slot].head = 0;	3413	fs_hash [slot].head = 0;
2129		3414
2130	while (w_)	3415	while (w_)
…		…
2135	w->wd = -1;	3420	w->wd = -1;
2136		3421
2137	if (fs_fd >= 0)	3422	if (fs_fd >= 0)
2138	infy_add (EV_A_ w); /* re-add, no matter what */	3423	infy_add (EV_A_ w); /* re-add, no matter what */
2139	else	3424	else
		3425	{
		3426	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		3427	if (ev_is_active (&w->timer)) ev_ref (EV_A);
2140	ev_timer_start (EV_A_ &w->timer);	3428	ev_timer_again (EV_A_ &w->timer);
		3429	if (ev_is_active (&w->timer)) ev_unref (EV_A);
		3430	}
2141	}	3431	}
2142
2143	}	3432	}
2144	}	3433	}
2145		3434
		3435	#endif
		3436
		3437	#ifdef _WIN32
		3438	# define EV_LSTAT(p,b) _stati64 (p, b)
		3439	#else
		3440	# define EV_LSTAT(p,b) lstat (p, b)
2146	#endif	3441	#endif
2147		3442
2148	void	3443	void
2149	ev_stat_stat (EV_P_ ev_stat *w)	3444	ev_stat_stat (EV_P_ ev_stat *w)
2150	{	3445	{
…		…
2157	static void noinline	3452	static void noinline
2158	stat_timer_cb (EV_P_ ev_timer *w_, int revents)	3453	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
2159	{	3454	{
2160	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));	3455	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
2161		3456
2162	/* we copy this here each the time so that */	3457	ev_statdata prev = w->attr;
2163	/* prev has the old value when the callback gets invoked */
2164	w->prev = w->attr;
2165	ev_stat_stat (EV_A_ w);	3458	ev_stat_stat (EV_A_ w);
2166		3459
2167	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */	3460	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
2168	if (	3461	if (
2169	w->prev.st_dev != w->attr.st_dev	3462	prev.st_dev != w->attr.st_dev
2170	|| w->prev.st_ino != w->attr.st_ino	3463	|| prev.st_ino != w->attr.st_ino
2171	|| w->prev.st_mode != w->attr.st_mode	3464	|| prev.st_mode != w->attr.st_mode
2172	|| w->prev.st_nlink != w->attr.st_nlink	3465	|| prev.st_nlink != w->attr.st_nlink
2173	|| w->prev.st_uid != w->attr.st_uid	3466	|| prev.st_uid != w->attr.st_uid
2174	|| w->prev.st_gid != w->attr.st_gid	3467	|| prev.st_gid != w->attr.st_gid
2175	|| w->prev.st_rdev != w->attr.st_rdev	3468	|| prev.st_rdev != w->attr.st_rdev
2176	|| w->prev.st_size != w->attr.st_size	3469	|| prev.st_size != w->attr.st_size
2177	|| w->prev.st_atime != w->attr.st_atime	3470	|| prev.st_atime != w->attr.st_atime
2178	|| w->prev.st_mtime != w->attr.st_mtime	3471	|| prev.st_mtime != w->attr.st_mtime
2179	|| w->prev.st_ctime != w->attr.st_ctime	3472	|| prev.st_ctime != w->attr.st_ctime
2180	) {	3473	) {
		3474	/* we only update w->prev on actual differences */
		3475	/* in case we test more often than invoke the callback, */
		3476	/* to ensure that prev is always different to attr */
		3477	w->prev = prev;
		3478
2181	#if EV_USE_INOTIFY	3479	#if EV_USE_INOTIFY
		3480	if (fs_fd >= 0)
		3481	{
2182	infy_del (EV_A_ w);	3482	infy_del (EV_A_ w);
2183	infy_add (EV_A_ w);	3483	infy_add (EV_A_ w);
2184	ev_stat_stat (EV_A_ w); /* avoid race... */	3484	ev_stat_stat (EV_A_ w); /* avoid race... */
		3485	}
2185	#endif	3486	#endif
2186		3487
2187	ev_feed_event (EV_A_ w, EV_STAT);	3488	ev_feed_event (EV_A_ w, EV_STAT);
2188	}	3489	}
2189	}	3490	}
…		…
2192	ev_stat_start (EV_P_ ev_stat *w)	3493	ev_stat_start (EV_P_ ev_stat *w)
2193	{	3494	{
2194	if (expect_false (ev_is_active (w)))	3495	if (expect_false (ev_is_active (w)))
2195	return;	3496	return;
2196		3497
2197	/* since we use memcmp, we need to clear any padding data etc. */
2198	memset (&w->prev, 0, sizeof (ev_statdata));
2199	memset (&w->attr, 0, sizeof (ev_statdata));
2200
2201	ev_stat_stat (EV_A_ w);	3498	ev_stat_stat (EV_A_ w);
2202		3499
		3500	if (w->interval < MIN_STAT_INTERVAL && w->interval)
2203	if (w->interval < MIN_STAT_INTERVAL)	3501	w->interval = MIN_STAT_INTERVAL;
2204	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
2205		3502
2206	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);	3503	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
2207	ev_set_priority (&w->timer, ev_priority (w));	3504	ev_set_priority (&w->timer, ev_priority (w));
2208		3505
2209	#if EV_USE_INOTIFY	3506	#if EV_USE_INOTIFY
2210	infy_init (EV_A);	3507	infy_init (EV_A);
2211		3508
2212	if (fs_fd >= 0)	3509	if (fs_fd >= 0)
2213	infy_add (EV_A_ w);	3510	infy_add (EV_A_ w);
2214	else	3511	else
2215	#endif	3512	#endif
		3513	{
2216	ev_timer_start (EV_A_ &w->timer);	3514	ev_timer_again (EV_A_ &w->timer);
		3515	ev_unref (EV_A);
		3516	}
2217		3517
2218	ev_start (EV_A_ (W)w, 1);	3518	ev_start (EV_A_ (W)w, 1);
		3519
		3520	EV_FREQUENT_CHECK;
2219	}	3521	}
2220		3522
2221	void	3523	void
2222	ev_stat_stop (EV_P_ ev_stat *w)	3524	ev_stat_stop (EV_P_ ev_stat *w)
2223	{	3525	{
2224	clear_pending (EV_A_ (W)w);	3526	clear_pending (EV_A_ (W)w);
2225	if (expect_false (!ev_is_active (w)))	3527	if (expect_false (!ev_is_active (w)))
2226	return;	3528	return;
2227		3529
		3530	EV_FREQUENT_CHECK;
		3531
2228	#if EV_USE_INOTIFY	3532	#if EV_USE_INOTIFY
2229	infy_del (EV_A_ w);	3533	infy_del (EV_A_ w);
2230	#endif	3534	#endif
		3535
		3536	if (ev_is_active (&w->timer))
		3537	{
		3538	ev_ref (EV_A);
2231	ev_timer_stop (EV_A_ &w->timer);	3539	ev_timer_stop (EV_A_ &w->timer);
		3540	}
2232		3541
2233	ev_stop (EV_A_ (W)w);	3542	ev_stop (EV_A_ (W)w);
		3543
		3544	EV_FREQUENT_CHECK;
2234	}	3545	}
2235	#endif	3546	#endif
2236		3547
2237	#if EV_IDLE_ENABLE	3548	#if EV_IDLE_ENABLE
2238	void	3549	void
…		…
2241	if (expect_false (ev_is_active (w)))	3552	if (expect_false (ev_is_active (w)))
2242	return;	3553	return;
2243		3554
2244	pri_adjust (EV_A_ (W)w);	3555	pri_adjust (EV_A_ (W)w);
2245		3556
		3557	EV_FREQUENT_CHECK;
		3558
2246	{	3559	{
2247	int active = ++idlecnt [ABSPRI (w)];	3560	int active = ++idlecnt [ABSPRI (w)];
2248		3561
2249	++idleall;	3562	++idleall;
2250	ev_start (EV_A_ (W)w, active);	3563	ev_start (EV_A_ (W)w, active);
2251		3564
2252	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);	3565	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
2253	idles [ABSPRI (w)][active - 1] = w;	3566	idles [ABSPRI (w)][active - 1] = w;
2254	}	3567	}
		3568
		3569	EV_FREQUENT_CHECK;
2255	}	3570	}
2256		3571
2257	void	3572	void
2258	ev_idle_stop (EV_P_ ev_idle *w)	3573	ev_idle_stop (EV_P_ ev_idle *w)
2259	{	3574	{
2260	clear_pending (EV_A_ (W)w);	3575	clear_pending (EV_A_ (W)w);
2261	if (expect_false (!ev_is_active (w)))	3576	if (expect_false (!ev_is_active (w)))
2262	return;	3577	return;
2263		3578
		3579	EV_FREQUENT_CHECK;
		3580
2264	{	3581	{
2265	int active = ((W)w)->active;	3582	int active = ev_active (w);
2266		3583
2267	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];	3584	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
2268	((W)idles [ABSPRI (w)][active - 1])->active = active;	3585	ev_active (idles [ABSPRI (w)][active - 1]) = active;
2269		3586
2270	ev_stop (EV_A_ (W)w);	3587	ev_stop (EV_A_ (W)w);
2271	--idleall;	3588	--idleall;
2272	}	3589	}
2273	}
2274	#endif
2275		3590
		3591	EV_FREQUENT_CHECK;
		3592	}
		3593	#endif
		3594
		3595	#if EV_PREPARE_ENABLE
2276	void	3596	void
2277	ev_prepare_start (EV_P_ ev_prepare *w)	3597	ev_prepare_start (EV_P_ ev_prepare *w)
2278	{	3598	{
2279	if (expect_false (ev_is_active (w)))	3599	if (expect_false (ev_is_active (w)))
2280	return;	3600	return;
		3601
		3602	EV_FREQUENT_CHECK;
2281		3603
2282	ev_start (EV_A_ (W)w, ++preparecnt);	3604	ev_start (EV_A_ (W)w, ++preparecnt);
2283	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);	3605	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
2284	prepares [preparecnt - 1] = w;	3606	prepares [preparecnt - 1] = w;
		3607
		3608	EV_FREQUENT_CHECK;
2285	}	3609	}
2286		3610
2287	void	3611	void
2288	ev_prepare_stop (EV_P_ ev_prepare *w)	3612	ev_prepare_stop (EV_P_ ev_prepare *w)
2289	{	3613	{
2290	clear_pending (EV_A_ (W)w);	3614	clear_pending (EV_A_ (W)w);
2291	if (expect_false (!ev_is_active (w)))	3615	if (expect_false (!ev_is_active (w)))
2292	return;	3616	return;
2293		3617
		3618	EV_FREQUENT_CHECK;
		3619
2294	{	3620	{
2295	int active = ((W)w)->active;	3621	int active = ev_active (w);
		3622
2296	prepares [active - 1] = prepares [--preparecnt];	3623	prepares [active - 1] = prepares [--preparecnt];
2297	((W)prepares [active - 1])->active = active;	3624	ev_active (prepares [active - 1]) = active;
2298	}	3625	}
2299		3626
2300	ev_stop (EV_A_ (W)w);	3627	ev_stop (EV_A_ (W)w);
2301	}
2302		3628
		3629	EV_FREQUENT_CHECK;
		3630	}
		3631	#endif
		3632
		3633	#if EV_CHECK_ENABLE
2303	void	3634	void
2304	ev_check_start (EV_P_ ev_check *w)	3635	ev_check_start (EV_P_ ev_check *w)
2305	{	3636	{
2306	if (expect_false (ev_is_active (w)))	3637	if (expect_false (ev_is_active (w)))
2307	return;	3638	return;
		3639
		3640	EV_FREQUENT_CHECK;
2308		3641
2309	ev_start (EV_A_ (W)w, ++checkcnt);	3642	ev_start (EV_A_ (W)w, ++checkcnt);
2310	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);	3643	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
2311	checks [checkcnt - 1] = w;	3644	checks [checkcnt - 1] = w;
		3645
		3646	EV_FREQUENT_CHECK;
2312	}	3647	}
2313		3648
2314	void	3649	void
2315	ev_check_stop (EV_P_ ev_check *w)	3650	ev_check_stop (EV_P_ ev_check *w)
2316	{	3651	{
2317	clear_pending (EV_A_ (W)w);	3652	clear_pending (EV_A_ (W)w);
2318	if (expect_false (!ev_is_active (w)))	3653	if (expect_false (!ev_is_active (w)))
2319	return;	3654	return;
2320		3655
		3656	EV_FREQUENT_CHECK;
		3657
2321	{	3658	{
2322	int active = ((W)w)->active;	3659	int active = ev_active (w);
		3660
2323	checks [active - 1] = checks [--checkcnt];	3661	checks [active - 1] = checks [--checkcnt];
2324	((W)checks [active - 1])->active = active;	3662	ev_active (checks [active - 1]) = active;
2325	}	3663	}
2326		3664
2327	ev_stop (EV_A_ (W)w);	3665	ev_stop (EV_A_ (W)w);
		3666
		3667	EV_FREQUENT_CHECK;
2328	}	3668	}
		3669	#endif
2329		3670
2330	#if EV_EMBED_ENABLE	3671	#if EV_EMBED_ENABLE
2331	void noinline	3672	void noinline
2332	ev_embed_sweep (EV_P_ ev_embed *w)	3673	ev_embed_sweep (EV_P_ ev_embed *w)
2333	{	3674	{
2334	ev_loop (w->other, EVLOOP_NONBLOCK);	3675	ev_run (w->other, EVRUN_NOWAIT);
2335	}	3676	}
2336		3677
2337	static void	3678	static void
2338	embed_io_cb (EV_P_ ev_io *io, int revents)	3679	embed_io_cb (EV_P_ ev_io *io, int revents)
2339	{	3680	{
2340	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));	3681	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
2341		3682
2342	if (ev_cb (w))	3683	if (ev_cb (w))
2343	ev_feed_event (EV_A_ (W)w, EV_EMBED);	3684	ev_feed_event (EV_A_ (W)w, EV_EMBED);
2344	else	3685	else
2345	ev_loop (w->other, EVLOOP_NONBLOCK);	3686	ev_run (w->other, EVRUN_NOWAIT);
2346	}	3687	}
2347		3688
2348	static void	3689	static void
2349	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)	3690	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
2350	{	3691	{
2351	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));	3692	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
2352		3693
2353	{	3694	{
2354	struct ev_loop *loop = w->other;	3695	EV_P = w->other;
2355		3696
2356	while (fdchangecnt)	3697	while (fdchangecnt)
2357	{	3698	{
2358	fd_reify (EV_A);	3699	fd_reify (EV_A);
2359	ev_loop (EV_A_ EVLOOP_NONBLOCK);	3700	ev_run (EV_A_ EVRUN_NOWAIT);
2360	}	3701	}
2361	}	3702	}
		3703	}
		3704
		3705	static void
		3706	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		3707	{
		3708	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		3709
		3710	ev_embed_stop (EV_A_ w);
		3711
		3712	{
		3713	EV_P = w->other;
		3714
		3715	ev_loop_fork (EV_A);
		3716	ev_run (EV_A_ EVRUN_NOWAIT);
		3717	}
		3718
		3719	ev_embed_start (EV_A_ w);
2362	}	3720	}
2363		3721
2364	#if 0	3722	#if 0
2365	static void	3723	static void
2366	embed_idle_cb (EV_P_ ev_idle *idle, int revents)	3724	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
…		…
2374	{	3732	{
2375	if (expect_false (ev_is_active (w)))	3733	if (expect_false (ev_is_active (w)))
2376	return;	3734	return;
2377		3735
2378	{	3736	{
2379	struct ev_loop *loop = w->other;	3737	EV_P = w->other;
2380	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));	3738	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
2381	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);	3739	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
2382	}	3740	}
		3741
		3742	EV_FREQUENT_CHECK;
2383		3743
2384	ev_set_priority (&w->io, ev_priority (w));	3744	ev_set_priority (&w->io, ev_priority (w));
2385	ev_io_start (EV_A_ &w->io);	3745	ev_io_start (EV_A_ &w->io);
2386		3746
2387	ev_prepare_init (&w->prepare, embed_prepare_cb);	3747	ev_prepare_init (&w->prepare, embed_prepare_cb);
2388	ev_set_priority (&w->prepare, EV_MINPRI);	3748	ev_set_priority (&w->prepare, EV_MINPRI);
2389	ev_prepare_start (EV_A_ &w->prepare);	3749	ev_prepare_start (EV_A_ &w->prepare);
2390		3750
		3751	ev_fork_init (&w->fork, embed_fork_cb);
		3752	ev_fork_start (EV_A_ &w->fork);
		3753
2391	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/	3754	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
2392		3755
2393	ev_start (EV_A_ (W)w, 1);	3756	ev_start (EV_A_ (W)w, 1);
		3757
		3758	EV_FREQUENT_CHECK;
2394	}	3759	}
2395		3760
2396	void	3761	void
2397	ev_embed_stop (EV_P_ ev_embed *w)	3762	ev_embed_stop (EV_P_ ev_embed *w)
2398	{	3763	{
2399	clear_pending (EV_A_ (W)w);	3764	clear_pending (EV_A_ (W)w);
2400	if (expect_false (!ev_is_active (w)))	3765	if (expect_false (!ev_is_active (w)))
2401	return;	3766	return;
2402		3767
		3768	EV_FREQUENT_CHECK;
		3769
2403	ev_io_stop (EV_A_ &w->io);	3770	ev_io_stop (EV_A_ &w->io);
2404	ev_prepare_stop (EV_A_ &w->prepare);	3771	ev_prepare_stop (EV_A_ &w->prepare);
		3772	ev_fork_stop (EV_A_ &w->fork);
2405		3773
2406	ev_stop (EV_A_ (W)w);	3774	ev_stop (EV_A_ (W)w);
		3775
		3776	EV_FREQUENT_CHECK;
2407	}	3777	}
2408	#endif	3778	#endif
2409		3779
2410	#if EV_FORK_ENABLE	3780	#if EV_FORK_ENABLE
2411	void	3781	void
2412	ev_fork_start (EV_P_ ev_fork *w)	3782	ev_fork_start (EV_P_ ev_fork *w)
2413	{	3783	{
2414	if (expect_false (ev_is_active (w)))	3784	if (expect_false (ev_is_active (w)))
2415	return;	3785	return;
2416		3786
		3787	EV_FREQUENT_CHECK;
		3788
2417	ev_start (EV_A_ (W)w, ++forkcnt);	3789	ev_start (EV_A_ (W)w, ++forkcnt);
2418	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);	3790	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
2419	forks [forkcnt - 1] = w;	3791	forks [forkcnt - 1] = w;
		3792
		3793	EV_FREQUENT_CHECK;
2420	}	3794	}
2421		3795
2422	void	3796	void
2423	ev_fork_stop (EV_P_ ev_fork *w)	3797	ev_fork_stop (EV_P_ ev_fork *w)
2424	{	3798	{
2425	clear_pending (EV_A_ (W)w);	3799	clear_pending (EV_A_ (W)w);
2426	if (expect_false (!ev_is_active (w)))	3800	if (expect_false (!ev_is_active (w)))
2427	return;	3801	return;
2428		3802
		3803	EV_FREQUENT_CHECK;
		3804
2429	{	3805	{
2430	int active = ((W)w)->active;	3806	int active = ev_active (w);
		3807
2431	forks [active - 1] = forks [--forkcnt];	3808	forks [active - 1] = forks [--forkcnt];
2432	((W)forks [active - 1])->active = active;	3809	ev_active (forks [active - 1]) = active;
2433	}	3810	}
2434		3811
2435	ev_stop (EV_A_ (W)w);	3812	ev_stop (EV_A_ (W)w);
		3813
		3814	EV_FREQUENT_CHECK;
		3815	}
		3816	#endif
		3817
		3818	#if EV_CLEANUP_ENABLE
		3819	void
		3820	ev_cleanup_start (EV_P_ ev_cleanup *w)
		3821	{
		3822	if (expect_false (ev_is_active (w)))
		3823	return;
		3824
		3825	EV_FREQUENT_CHECK;
		3826
		3827	ev_start (EV_A_ (W)w, ++cleanupcnt);
		3828	array_needsize (ev_cleanup *, cleanups, cleanupmax, cleanupcnt, EMPTY2);
		3829	cleanups [cleanupcnt - 1] = w;
		3830
		3831	/* cleanup watchers should never keep a refcount on the loop */
		3832	ev_unref (EV_A);
		3833	EV_FREQUENT_CHECK;
		3834	}
		3835
		3836	void
		3837	ev_cleanup_stop (EV_P_ ev_cleanup *w)
		3838	{
		3839	clear_pending (EV_A_ (W)w);
		3840	if (expect_false (!ev_is_active (w)))
		3841	return;
		3842
		3843	EV_FREQUENT_CHECK;
		3844	ev_ref (EV_A);
		3845
		3846	{
		3847	int active = ev_active (w);
		3848
		3849	cleanups [active - 1] = cleanups [--cleanupcnt];
		3850	ev_active (cleanups [active - 1]) = active;
		3851	}
		3852
		3853	ev_stop (EV_A_ (W)w);
		3854
		3855	EV_FREQUENT_CHECK;
2436	}	3856	}
2437	#endif	3857	#endif
2438		3858
2439	#if EV_ASYNC_ENABLE	3859	#if EV_ASYNC_ENABLE
2440	void	3860	void
2441	ev_async_start (EV_P_ ev_async *w)	3861	ev_async_start (EV_P_ ev_async *w)
2442	{	3862	{
2443	if (expect_false (ev_is_active (w)))	3863	if (expect_false (ev_is_active (w)))
2444	return;	3864	return;
2445		3865
		3866	w->sent = 0;
		3867
2446	evpipe_init (EV_A);	3868	evpipe_init (EV_A);
		3869
		3870	EV_FREQUENT_CHECK;
2447		3871
2448	ev_start (EV_A_ (W)w, ++asynccnt);	3872	ev_start (EV_A_ (W)w, ++asynccnt);
2449	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);	3873	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
2450	asyncs [asynccnt - 1] = w;	3874	asyncs [asynccnt - 1] = w;
		3875
		3876	EV_FREQUENT_CHECK;
2451	}	3877	}
2452		3878
2453	void	3879	void
2454	ev_async_stop (EV_P_ ev_async *w)	3880	ev_async_stop (EV_P_ ev_async *w)
2455	{	3881	{
2456	clear_pending (EV_A_ (W)w);	3882	clear_pending (EV_A_ (W)w);
2457	if (expect_false (!ev_is_active (w)))	3883	if (expect_false (!ev_is_active (w)))
2458	return;	3884	return;
2459		3885
		3886	EV_FREQUENT_CHECK;
		3887
2460	{	3888	{
2461	int active = ((W)w)->active;	3889	int active = ev_active (w);
		3890
2462	asyncs [active - 1] = asyncs [--asynccnt];	3891	asyncs [active - 1] = asyncs [--asynccnt];
2463	((W)asyncs [active - 1])->active = active;	3892	ev_active (asyncs [active - 1]) = active;
2464	}	3893	}
2465		3894
2466	ev_stop (EV_A_ (W)w);	3895	ev_stop (EV_A_ (W)w);
		3896
		3897	EV_FREQUENT_CHECK;
2467	}	3898	}
2468		3899
2469	void	3900	void
2470	ev_async_send (EV_P_ ev_async *w)	3901	ev_async_send (EV_P_ ev_async *w)
2471	{	3902	{
2472	w->sent = 1;	3903	w->sent = 1;
2473	evpipe_write (EV_A_ 0, 1);	3904	evpipe_write (EV_A_ &async_pending);
2474	}	3905	}
2475	#endif	3906	#endif
2476		3907
2477	/*****************************************************************************/	3908	/*****************************************************************************/
2478		3909
…		…
2488	once_cb (EV_P_ struct ev_once *once, int revents)	3919	once_cb (EV_P_ struct ev_once *once, int revents)
2489	{	3920	{
2490	void (*cb)(int revents, void *arg) = once->cb;	3921	void (*cb)(int revents, void *arg) = once->cb;
2491	void *arg = once->arg;	3922	void *arg = once->arg;
2492		3923
2493	ev_io_stop (EV_A_ &once->io);	3924	ev_io_stop (EV_A_ &once->io);
2494	ev_timer_stop (EV_A_ &once->to);	3925	ev_timer_stop (EV_A_ &once->to);
2495	ev_free (once);	3926	ev_free (once);
2496		3927
2497	cb (revents, arg);	3928	cb (revents, arg);
2498	}	3929	}
2499		3930
2500	static void	3931	static void
2501	once_cb_io (EV_P_ ev_io *w, int revents)	3932	once_cb_io (EV_P_ ev_io *w, int revents)
2502	{	3933	{
2503	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3934	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3935
		3936	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
2504	}	3937	}
2505		3938
2506	static void	3939	static void
2507	once_cb_to (EV_P_ ev_timer *w, int revents)	3940	once_cb_to (EV_P_ ev_timer *w, int revents)
2508	{	3941	{
2509	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3942	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3943
		3944	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
2510	}	3945	}
2511		3946
2512	void	3947	void
2513	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3948	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
2514	{	3949	{
2515	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));	3950	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
2516		3951
2517	if (expect_false (!once))	3952	if (expect_false (!once))
2518	{	3953	{
2519	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3954	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMER, arg);
2520	return;	3955	return;
2521	}	3956	}
2522		3957
2523	once->cb = cb;	3958	once->cb = cb;
2524	once->arg = arg;	3959	once->arg = arg;
…		…
2536	ev_timer_set (&once->to, timeout, 0.);	3971	ev_timer_set (&once->to, timeout, 0.);
2537	ev_timer_start (EV_A_ &once->to);	3972	ev_timer_start (EV_A_ &once->to);
2538	}	3973	}
2539	}	3974	}
2540		3975
		3976	/*****************************************************************************/
		3977
		3978	#if EV_WALK_ENABLE
		3979	void ecb_cold
		3980	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3981	{
		3982	int i, j;
		3983	ev_watcher_list *wl, *wn;
		3984
		3985	if (types & (EV_IO | EV_EMBED))
		3986	for (i = 0; i < anfdmax; ++i)
		3987	for (wl = anfds [i].head; wl; )
		3988	{
		3989	wn = wl->next;
		3990
		3991	#if EV_EMBED_ENABLE
		3992	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3993	{
		3994	if (types & EV_EMBED)
		3995	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3996	}
		3997	else
		3998	#endif
		3999	#if EV_USE_INOTIFY
		4000	if (ev_cb ((ev_io *)wl) == infy_cb)
		4001	;
		4002	else
		4003	#endif
		4004	if ((ev_io *)wl != &pipe_w)
		4005	if (types & EV_IO)
		4006	cb (EV_A_ EV_IO, wl);
		4007
		4008	wl = wn;
		4009	}
		4010
		4011	if (types & (EV_TIMER | EV_STAT))
		4012	for (i = timercnt + HEAP0; i-- > HEAP0; )
		4013	#if EV_STAT_ENABLE
		4014	/*TODO: timer is not always active*/
		4015	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
		4016	{
		4017	if (types & EV_STAT)
		4018	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
		4019	}
		4020	else
		4021	#endif
		4022	if (types & EV_TIMER)
		4023	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
		4024
		4025	#if EV_PERIODIC_ENABLE
		4026	if (types & EV_PERIODIC)
		4027	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		4028	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		4029	#endif
		4030
		4031	#if EV_IDLE_ENABLE
		4032	if (types & EV_IDLE)
		4033	for (j = NUMPRI; i--; )
		4034	for (i = idlecnt [j]; i--; )
		4035	cb (EV_A_ EV_IDLE, idles [j][i]);
		4036	#endif
		4037
		4038	#if EV_FORK_ENABLE
		4039	if (types & EV_FORK)
		4040	for (i = forkcnt; i--; )
		4041	if (ev_cb (forks [i]) != embed_fork_cb)
		4042	cb (EV_A_ EV_FORK, forks [i]);
		4043	#endif
		4044
		4045	#if EV_ASYNC_ENABLE
		4046	if (types & EV_ASYNC)
		4047	for (i = asynccnt; i--; )
		4048	cb (EV_A_ EV_ASYNC, asyncs [i]);
		4049	#endif
		4050
		4051	#if EV_PREPARE_ENABLE
		4052	if (types & EV_PREPARE)
		4053	for (i = preparecnt; i--; )
		4054	# if EV_EMBED_ENABLE
		4055	if (ev_cb (prepares [i]) != embed_prepare_cb)
		4056	# endif
		4057	cb (EV_A_ EV_PREPARE, prepares [i]);
		4058	#endif
		4059
		4060	#if EV_CHECK_ENABLE
		4061	if (types & EV_CHECK)
		4062	for (i = checkcnt; i--; )
		4063	cb (EV_A_ EV_CHECK, checks [i]);
		4064	#endif
		4065
		4066	#if EV_SIGNAL_ENABLE
		4067	if (types & EV_SIGNAL)
		4068	for (i = 0; i < EV_NSIG - 1; ++i)
		4069	for (wl = signals [i].head; wl; )
		4070	{
		4071	wn = wl->next;
		4072	cb (EV_A_ EV_SIGNAL, wl);
		4073	wl = wn;
		4074	}
		4075	#endif
		4076
		4077	#if EV_CHILD_ENABLE
		4078	if (types & EV_CHILD)
		4079	for (i = (EV_PID_HASHSIZE); i--; )
		4080	for (wl = childs [i]; wl; )
		4081	{
		4082	wn = wl->next;
		4083	cb (EV_A_ EV_CHILD, wl);
		4084	wl = wn;
		4085	}
		4086	#endif
		4087	/* EV_STAT 0x00001000 /* stat data changed */
		4088	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
		4089	}
		4090	#endif
		4091
2541	#if EV_MULTIPLICITY	4092	#if EV_MULTIPLICITY
2542	#include "ev_wrap.h"	4093	#include "ev_wrap.h"
2543	#endif	4094	#endif
2544		4095
2545	#ifdef __cplusplus	4096	EV_CPP(})
2546	}
2547	#endif
2548		4097

Diff Legend

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