ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.286 by root, Wed Apr 15 19:37:15 2009 UTC

1	/*	1	/*
2	* libev event processing core, watcher management	2	* libev event processing core, watcher management
3	*	3	*
4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009 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	7	* Redistribution and use in source and binary forms, with or without modifica-
8	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
9	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		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-
		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-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
10	*	27	*
11	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
12	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
13	*	30	* in which case the provisions of the GPL are applicable instead of
14	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
15	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
16	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
17	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
18	*	35	* and other provisions required by the GPL. If you do not delete the
19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	38	*/
		39
		40	#ifdef __cplusplus
		41	extern "C" {
		42	#endif
		43
		44	/* this big block deduces configuration from config.h */
31	#ifndef EV_STANDALONE	45	#ifndef EV_STANDALONE
		46	# ifdef EV_CONFIG_H
		47	# include EV_CONFIG_H
		48	# else
32	# include "config.h"	49	# include "config.h"
		50	# endif
		51
		52	# if HAVE_CLOCK_SYSCALL
		53	# ifndef EV_USE_CLOCK_SYSCALL
		54	# define EV_USE_CLOCK_SYSCALL 1
		55	# ifndef EV_USE_REALTIME
		56	# define EV_USE_REALTIME 0
		57	# endif
		58	# ifndef EV_USE_MONOTONIC
		59	# define EV_USE_MONOTONIC 1
		60	# endif
		61	# endif
		62	# endif
		63
		64	# if HAVE_CLOCK_GETTIME
		65	# ifndef EV_USE_MONOTONIC
		66	# define EV_USE_MONOTONIC 1
		67	# endif
		68	# ifndef EV_USE_REALTIME
		69	# define EV_USE_REALTIME 0
		70	# endif
		71	# else
		72	# ifndef EV_USE_MONOTONIC
		73	# define EV_USE_MONOTONIC 0
		74	# endif
		75	# ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 0
		77	# endif
		78	# endif
		79
		80	# ifndef EV_USE_NANOSLEEP
		81	# if HAVE_NANOSLEEP
		82	# define EV_USE_NANOSLEEP 1
		83	# else
		84	# define EV_USE_NANOSLEEP 0
		85	# endif
		86	# endif
		87
		88	# ifndef EV_USE_SELECT
		89	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		90	# define EV_USE_SELECT 1
		91	# else
		92	# define EV_USE_SELECT 0
		93	# endif
		94	# endif
		95
		96	# ifndef EV_USE_POLL
		97	# if HAVE_POLL && HAVE_POLL_H
		98	# define EV_USE_POLL 1
		99	# else
		100	# define EV_USE_POLL 0
		101	# endif
		102	# endif
		103
		104	# ifndef EV_USE_EPOLL
		105	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		106	# define EV_USE_EPOLL 1
		107	# else
		108	# define EV_USE_EPOLL 0
		109	# endif
		110	# endif
		111
		112	# ifndef EV_USE_KQUEUE
		113	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		114	# define EV_USE_KQUEUE 1
		115	# else
		116	# define EV_USE_KQUEUE 0
		117	# endif
		118	# endif
		119
		120	# ifndef EV_USE_PORT
		121	# if HAVE_PORT_H && HAVE_PORT_CREATE
		122	# define EV_USE_PORT 1
		123	# else
		124	# define EV_USE_PORT 0
		125	# endif
		126	# endif
		127
		128	# ifndef EV_USE_INOTIFY
		129	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		130	# define EV_USE_INOTIFY 1
		131	# else
		132	# define EV_USE_INOTIFY 0
		133	# endif
		134	# endif
		135
		136	# ifndef EV_USE_EVENTFD
		137	# if HAVE_EVENTFD
		138	# define EV_USE_EVENTFD 1
		139	# else
		140	# define EV_USE_EVENTFD 0
		141	# endif
		142	# endif
		143
33	#endif	144	#endif
34		145
35	#include <math.h>	146	#include <math.h>
36	#include <stdlib.h>	147	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	148	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	149	#include <stddef.h>
41		150
42	#include <stdio.h>	151	#include <stdio.h>
43		152
44	#include <assert.h>	153	#include <assert.h>
45	#include <errno.h>	154	#include <errno.h>
46	#include <sys/types.h>	155	#include <sys/types.h>
		156	#include <time.h>
		157
		158	#include <signal.h>
		159
		160	#ifdef EV_H
		161	# include EV_H
		162	#else
		163	# include "ev.h"
		164	#endif
		165
47	#ifndef WIN32	166	#ifndef _WIN32
		167	# include <sys/time.h>
48	# include <sys/wait.h>	168	# include <sys/wait.h>
		169	# include <unistd.h>
		170	#else
		171	# include <io.h>
		172	# define WIN32_LEAN_AND_MEAN
		173	# include <windows.h>
		174	# ifndef EV_SELECT_IS_WINSOCKET
		175	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	176	# endif
50	#include <sys/time.h>	177	#endif
51	#include <time.h>
52		178
53	/**/	179	/* this block tries to deduce configuration from header-defined symbols and defaults */
		180
		181	#ifndef EV_USE_CLOCK_SYSCALL
		182	# if __linux && __GLIBC__ >= 2
		183	# define EV_USE_CLOCK_SYSCALL 1
		184	# else
		185	# define EV_USE_CLOCK_SYSCALL 0
		186	# endif
		187	#endif
54		188
55	#ifndef EV_USE_MONOTONIC	189	#ifndef EV_USE_MONOTONIC
		190	# if defined (_POSIX_MONOTONIC_CLOCK) && _POSIX_MONOTONIC_CLOCK >= 0
56	# define EV_USE_MONOTONIC 1	191	# define EV_USE_MONOTONIC 1
		192	# else
		193	# define EV_USE_MONOTONIC 0
		194	# endif
		195	#endif
		196
		197	#ifndef EV_USE_REALTIME
		198	# define EV_USE_REALTIME !EV_USE_CLOCK_SYSCALL
		199	#endif
		200
		201	#ifndef EV_USE_NANOSLEEP
		202	# if _POSIX_C_SOURCE >= 199309L
		203	# define EV_USE_NANOSLEEP 1
		204	# else
		205	# define EV_USE_NANOSLEEP 0
		206	# endif
57	#endif	207	#endif
58		208
59	#ifndef EV_USE_SELECT	209	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	210	# define EV_USE_SELECT 1
61	#endif	211	#endif
62		212
63	#ifndef EV_USEV_POLL	213	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	214	# ifdef _WIN32
		215	# define EV_USE_POLL 0
		216	# else
		217	# define EV_USE_POLL 1
		218	# endif
65	#endif	219	#endif
66		220
67	#ifndef EV_USE_EPOLL	221	#ifndef EV_USE_EPOLL
		222	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
		223	# define EV_USE_EPOLL 1
		224	# else
68	# define EV_USE_EPOLL 0	225	# define EV_USE_EPOLL 0
		226	# endif
69	#endif	227	#endif
70		228
71	#ifndef EV_USE_KQUEUE	229	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	230	# define EV_USE_KQUEUE 0
73	#endif	231	#endif
74		232
75	#ifndef EV_USE_REALTIME	233	#ifndef EV_USE_PORT
		234	# define EV_USE_PORT 0
		235	#endif
		236
		237	#ifndef EV_USE_INOTIFY
		238	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 4))
76	# define EV_USE_REALTIME 1	239	# define EV_USE_INOTIFY 1
		240	# else
		241	# define EV_USE_INOTIFY 0
77	#endif	242	# endif
		243	#endif
78		244
79	/**/	245	#ifndef EV_PID_HASHSIZE
		246	# if EV_MINIMAL
		247	# define EV_PID_HASHSIZE 1
		248	# else
		249	# define EV_PID_HASHSIZE 16
		250	# endif
		251	#endif
		252
		253	#ifndef EV_INOTIFY_HASHSIZE
		254	# if EV_MINIMAL
		255	# define EV_INOTIFY_HASHSIZE 1
		256	# else
		257	# define EV_INOTIFY_HASHSIZE 16
		258	# endif
		259	#endif
		260
		261	#ifndef EV_USE_EVENTFD
		262	# if __linux && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 7))
		263	# define EV_USE_EVENTFD 1
		264	# else
		265	# define EV_USE_EVENTFD 0
		266	# endif
		267	#endif
		268
		269	#if 0 /* debugging */
		270	# define EV_VERIFY 3
		271	# define EV_USE_4HEAP 1
		272	# define EV_HEAP_CACHE_AT 1
		273	#endif
		274
		275	#ifndef EV_VERIFY
		276	# define EV_VERIFY !EV_MINIMAL
		277	#endif
		278
		279	#ifndef EV_USE_4HEAP
		280	# define EV_USE_4HEAP !EV_MINIMAL
		281	#endif
		282
		283	#ifndef EV_HEAP_CACHE_AT
		284	# define EV_HEAP_CACHE_AT !EV_MINIMAL
		285	#endif
		286
		287	/* this block fixes any misconfiguration where we know we run into trouble otherwise */
80		288
81	#ifndef CLOCK_MONOTONIC	289	#ifndef CLOCK_MONOTONIC
82	# undef EV_USE_MONOTONIC	290	# undef EV_USE_MONOTONIC
83	# define EV_USE_MONOTONIC 0	291	# define EV_USE_MONOTONIC 0
84	#endif	292	#endif
…		…
86	#ifndef CLOCK_REALTIME	294	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	295	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	296	# define EV_USE_REALTIME 0
89	#endif	297	#endif
90		298
		299	#if !EV_STAT_ENABLE
		300	# undef EV_USE_INOTIFY
		301	# define EV_USE_INOTIFY 0
		302	#endif
		303
		304	#if !EV_USE_NANOSLEEP
		305	# ifndef _WIN32
		306	# include <sys/select.h>
		307	# endif
		308	#endif
		309
		310	#if EV_USE_INOTIFY
		311	# include <sys/utsname.h>
		312	# include <sys/statfs.h>
		313	# include <sys/inotify.h>
		314	/* some very old inotify.h headers don't have IN_DONT_FOLLOW */
		315	# ifndef IN_DONT_FOLLOW
		316	# undef EV_USE_INOTIFY
		317	# define EV_USE_INOTIFY 0
		318	# endif
		319	#endif
		320
		321	#if EV_SELECT_IS_WINSOCKET
		322	# include <winsock.h>
		323	#endif
		324
		325	/* on linux, we can use a (slow) syscall to avoid a dependency on pthread, */
		326	/* which makes programs even slower. might work on other unices, too. */
		327	#if EV_USE_CLOCK_SYSCALL
		328	# include <syscall.h>
		329	# define clock_gettime(id, ts) syscall (SYS_clock_gettime, (id), (ts))
		330	# undef EV_USE_MONOTONIC
		331	# define EV_USE_MONOTONIC 1
		332	#endif
		333
		334	#if EV_USE_EVENTFD
		335	/* our minimum requirement is glibc 2.7 which has the stub, but not the header */
		336	# include <stdint.h>
		337	# ifdef __cplusplus
		338	extern "C" {
		339	# endif
		340	int eventfd (unsigned int initval, int flags);
		341	# ifdef __cplusplus
		342	}
		343	# endif
		344	#endif
		345
91	/**/	346	/**/
92		347
		348	#if EV_VERIFY >= 3
		349	# define EV_FREQUENT_CHECK ev_loop_verify (EV_A)
		350	#else
		351	# define EV_FREQUENT_CHECK do { } while (0)
		352	#endif
		353
		354	/*
		355	* This is used to avoid floating point rounding problems.
		356	* It is added to ev_rt_now when scheduling periodics
		357	* to ensure progress, time-wise, even when rounding
		358	* errors are against us.
		359	* This value is good at least till the year 4000.
		360	* Better solutions welcome.
		361	*/
		362	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
		363
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	364	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	365	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	366	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
97		367
98	#include "ev.h"
99
100	#if __GNUC__ >= 3	368	#if __GNUC__ >= 4
101	# define expect(expr,value) __builtin_expect ((expr),(value))	369	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	370	# define noinline __attribute__ ((noinline))
103	#else	371	#else
104	# define expect(expr,value) (expr)	372	# define expect(expr,value) (expr)
105	# define inline static	373	# define noinline
		374	# if __STDC_VERSION__ < 199901L && __GNUC__ < 2
		375	# define inline
		376	# endif
106	#endif	377	#endif
107		378
108	#define expect_false(expr) expect ((expr) != 0, 0)	379	#define expect_false(expr) expect ((expr) != 0, 0)
109	#define expect_true(expr) expect ((expr) != 0, 1)	380	#define expect_true(expr) expect ((expr) != 0, 1)
		381	#define inline_size static inline
		382
		383	#if EV_MINIMAL
		384	# define inline_speed static noinline
		385	#else
		386	# define inline_speed static inline
		387	#endif
110		388
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	389	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	390	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
113		391
		392	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		393	#define EMPTY2(a,b) /* used to suppress some warnings */
		394
114	typedef struct ev_watcher *W;	395	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	396	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	397	typedef ev_watcher_time *WT;
117		398
		399	#define ev_active(w) ((W)(w))->active
		400	#define ev_at(w) ((WT)(w))->at
		401
		402	#if EV_USE_REALTIME
		403	/* sig_atomic_t is used to avoid per-thread variables or locking but still */
		404	/* giving it a reasonably high chance of working on typical architetcures */
		405	static EV_ATOMIC_T have_realtime; /* did clock_gettime (CLOCK_REALTIME) work? */
		406	#endif
		407
		408	#if EV_USE_MONOTONIC
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	409	static EV_ATOMIC_T have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		410	#endif
		411
		412	#ifdef _WIN32
		413	# include "ev_win32.c"
		414	#endif
119		415
120	/*****************************************************************************/	416	/*****************************************************************************/
121		417
		418	static void (*syserr_cb)(const char *msg);
		419
		420	void
		421	ev_set_syserr_cb (void (*cb)(const char *msg))
		422	{
		423	syserr_cb = cb;
		424	}
		425
		426	static void noinline
		427	ev_syserr (const char *msg)
		428	{
		429	if (!msg)
		430	msg = "(libev) system error";
		431
		432	if (syserr_cb)
		433	syserr_cb (msg);
		434	else
		435	{
		436	perror (msg);
		437	abort ();
		438	}
		439	}
		440
		441	static void *
		442	ev_realloc_emul (void *ptr, long size)
		443	{
		444	/* some systems, notably openbsd and darwin, fail to properly
		445	* implement realloc (x, 0) (as required by both ansi c-98 and
		446	* the single unix specification, so work around them here.
		447	*/
		448
		449	if (size)
		450	return realloc (ptr, size);
		451
		452	free (ptr);
		453	return 0;
		454	}
		455
		456	static void *(*alloc)(void *ptr, long size) = ev_realloc_emul;
		457
		458	void
		459	ev_set_allocator (void *(*cb)(void *ptr, long size))
		460	{
		461	alloc = cb;
		462	}
		463
		464	inline_speed void *
		465	ev_realloc (void *ptr, long size)
		466	{
		467	ptr = alloc (ptr, size);
		468
		469	if (!ptr && size)
		470	{
		471	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		472	abort ();
		473	}
		474
		475	return ptr;
		476	}
		477
		478	#define ev_malloc(size) ev_realloc (0, (size))
		479	#define ev_free(ptr) ev_realloc ((ptr), 0)
		480
		481	/*****************************************************************************/
		482
122	typedef struct	483	typedef struct
123	{	484	{
124	struct ev_watcher_list *head;	485	WL head;
125	unsigned char events;	486	unsigned char events;
126	unsigned char reify;	487	unsigned char reify;
		488	unsigned char emask; /* the epoll backend stores the actual kernel mask in here */
		489	unsigned char unused;
		490	#if EV_USE_EPOLL
		491	unsigned int egen; /* generation counter to counter epoll bugs */
		492	#endif
		493	#if EV_SELECT_IS_WINSOCKET
		494	SOCKET handle;
		495	#endif
127	} ANFD;	496	} ANFD;
128		497
129	typedef struct	498	typedef struct
130	{	499	{
131	W w;	500	W w;
132	int events;	501	int events;
133	} ANPENDING;	502	} ANPENDING;
134		503
135	#ifdef EV_MULTIPLICITY	504	#if EV_USE_INOTIFY
136		505	/* hash table entry per inotify-id */
137	struct ev_loop	506	typedef struct
138	{	507	{
139	# define VAR(name,decl) decl;	508	WL head;
140	# include "ev_vars.h"	509	} ANFS;
141	};	510	#endif
142	# undef VAR
143	# include "ev_wrap.h"
144		511
		512	/* Heap Entry */
		513	#if EV_HEAP_CACHE_AT
		514	typedef struct {
		515	ev_tstamp at;
		516	WT w;
		517	} ANHE;
		518
		519	#define ANHE_w(he) (he).w /* access watcher, read-write */
		520	#define ANHE_at(he) (he).at /* access cached at, read-only */
		521	#define ANHE_at_cache(he) (he).at = (he).w->at /* update at from watcher */
145	#else	522	#else
		523	typedef WT ANHE;
146		524
		525	#define ANHE_w(he) (he)
		526	#define ANHE_at(he) (he)->at
		527	#define ANHE_at_cache(he)
		528	#endif
		529
		530	#if EV_MULTIPLICITY
		531
		532	struct ev_loop
		533	{
		534	ev_tstamp ev_rt_now;
		535	#define ev_rt_now ((loop)->ev_rt_now)
		536	#define VAR(name,decl) decl;
		537	#include "ev_vars.h"
		538	#undef VAR
		539	};
		540	#include "ev_wrap.h"
		541
		542	static struct ev_loop default_loop_struct;
		543	struct ev_loop *ev_default_loop_ptr;
		544
		545	#else
		546
		547	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	548	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	549	#include "ev_vars.h"
149	# undef VAR	550	#undef VAR
		551
		552	static int ev_default_loop_ptr;
150		553
151	#endif	554	#endif
152		555
153	/*****************************************************************************/	556	/*****************************************************************************/
154		557
155	inline ev_tstamp	558	ev_tstamp
156	ev_time (void)	559	ev_time (void)
157	{	560	{
158	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
159	struct timespec ts;	564	struct timespec ts;
160	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
161	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
162	#else	567	}
		568	#endif
		569
163	struct timeval tv;	570	struct timeval tv;
164	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
165	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
166	#endif
167	}	573	}
168		574
169	inline ev_tstamp	575	inline_size ev_tstamp
170	get_clock (void)	576	get_clock (void)
171	{	577	{
172	#if EV_USE_MONOTONIC	578	#if EV_USE_MONOTONIC
173	if (expect_true (have_monotonic))	579	if (expect_true (have_monotonic))
174	{	580	{
…		…
179	#endif	585	#endif
180		586
181	return ev_time ();	587	return ev_time ();
182	}	588	}
183		589
		590	#if EV_MULTIPLICITY
184	ev_tstamp	591	ev_tstamp
185	ev_now (EV_P)	592	ev_now (EV_P)
186	{	593	{
187	return rt_now;	594	return ev_rt_now;
188	}	595	}
		596	#endif
189		597
190	#define array_roundsize(base,n) ((n) | 4 & ~3)	598	void
191		599	ev_sleep (ev_tstamp delay)
192	#define array_needsize(base,cur,cnt,init) \	600	{
193	if (expect_false ((cnt) > cur)) \	601	if (delay > 0.)
194	{ \
195	int newcnt = cur; \
196	do \
197	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \
199	} \
200	while ((cnt) > newcnt); \
201	\
202	base = realloc (base, sizeof (*base) * (newcnt)); \
203	init (base + cur, newcnt - cur); \
204	cur = newcnt; \
205	}	602	{
		603	#if EV_USE_NANOSLEEP
		604	struct timespec ts;
		605
		606	ts.tv_sec = (time_t)delay;
		607	ts.tv_nsec = (long)((delay - (ev_tstamp)(ts.tv_sec)) * 1e9);
		608
		609	nanosleep (&ts, 0);
		610	#elif defined(_WIN32)
		611	Sleep ((unsigned long)(delay * 1e3));
		612	#else
		613	struct timeval tv;
		614
		615	tv.tv_sec = (time_t)delay;
		616	tv.tv_usec = (long)((delay - (ev_tstamp)(tv.tv_sec)) * 1e6);
		617
		618	/* here we rely on sys/time.h + sys/types.h + unistd.h providing select */
		619	/* somehting nto guaranteed by newer posix versions, but guaranteed */
		620	/* by older ones */
		621	select (0, 0, 0, 0, &tv);
		622	#endif
		623	}
		624	}
206		625
207	/*****************************************************************************/	626	/*****************************************************************************/
208		627
209	static void	628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
210	anfds_init (ANFD *base, int count)
211	{
212	while (count--)
213	{
214	base->head = 0;
215	base->events = EV_NONE;
216	base->reify = 0;
217		629
218	++base;	630	inline_size int
		631	array_nextsize (int elem, int cur, int cnt)
		632	{
		633	int ncur = cur + 1;
		634
		635	do
		636	ncur <<= 1;
		637	while (cnt > ncur);
		638
		639	/* if size is large, round to MALLOC_ROUND - 4 * longs to accomodate malloc overhead */
		640	if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
219	}	641	{
220	}	642	ncur *= elem;
221		643	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
222	static void	644	ncur = ncur - sizeof (void *) * 4;
223	event (EV_P_ W w, int events)	645	ncur /= elem;
224	{
225	if (w->pending)
226	{	646	}
		647
		648	return ncur;
		649	}
		650
		651	static noinline void *
		652	array_realloc (int elem, void *base, int *cur, int cnt)
		653	{
		654	*cur = array_nextsize (elem, *cur, cnt);
		655	return ev_realloc (base, elem * *cur);
		656	}
		657
		658	#define array_init_zero(base,count) \
		659	memset ((void *)(base), 0, sizeof (*(base)) * (count))
		660
		661	#define array_needsize(type,base,cur,cnt,init) \
		662	if (expect_false ((cnt) > (cur))) \
		663	{ \
		664	int ocur_ = (cur); \
		665	(base) = (type *)array_realloc \
		666	(sizeof (type), (base), &(cur), (cnt)); \
		667	init ((base) + (ocur_), (cur) - ocur_); \
		668	}
		669
		670	#if 0
		671	#define array_slim(type,stem) \
		672	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		673	{ \
		674	stem ## max = array_roundsize (stem ## cnt >> 1); \
		675	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		676	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		677	}
		678	#endif
		679
		680	#define array_free(stem, idx) \
		681	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0; stem ## s idx = 0
		682
		683	/*****************************************************************************/
		684
		685	void noinline
		686	ev_feed_event (EV_P_ void *w, int revents)
		687	{
		688	W w_ = (W)w;
		689	int pri = ABSPRI (w_);
		690
		691	if (expect_false (w_->pending))
		692	pendings [pri][w_->pending - 1].events |= revents;
		693	else
		694	{
		695	w_->pending = ++pendingcnt [pri];
		696	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		697	pendings [pri][w_->pending - 1].w = w_;
227	pendings [ABSPRI (w)][w->pending - 1].events |= events;	698	pendings [pri][w_->pending - 1].events = revents;
228	return;
229	}	699	}
230
231	w->pending = ++pendingcnt [ABSPRI (w)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
233	pendings [ABSPRI (w)][w->pending - 1].w = w;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;
235	}	700	}
236		701
237	static void	702	inline_speed void
		703	feed_reverse (EV_P_ W w)
		704	{
		705	array_needsize (W, rfeeds, rfeedmax, rfeedcnt + 1, EMPTY2);
		706	rfeeds [rfeedcnt++] = w;
		707	}
		708
		709	inline_size void
		710	feed_reverse_done (EV_P_ int revents)
		711	{
		712	do
		713	ev_feed_event (EV_A_ rfeeds [--rfeedcnt], revents);
		714	while (rfeedcnt);
		715	}
		716
		717	inline_speed void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	718	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	719	{
240	int i;	720	int i;
241		721
242	for (i = 0; i < eventcnt; ++i)	722	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	723	ev_feed_event (EV_A_ events [i], type);
244	}	724	}
245		725
246	static void	726	/*****************************************************************************/
		727
		728	inline_speed void
247	fd_event (EV_P_ int fd, int events)	729	fd_event (EV_P_ int fd, int revents)
248	{	730	{
249	ANFD *anfd = anfds + fd;	731	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	732	ev_io *w;
251		733
252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	734	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
253	{	735	{
254	int ev = w->events & events;	736	int ev = w->events & revents;
255		737
256	if (ev)	738	if (ev)
257	event (EV_A_ (W)w, ev);	739	ev_feed_event (EV_A_ (W)w, ev);
258	}	740	}
259	}	741	}
260		742
261	/*****************************************************************************/	743	void
		744	ev_feed_fd_event (EV_P_ int fd, int revents)
		745	{
		746	if (fd >= 0 && fd < anfdmax)
		747	fd_event (EV_A_ fd, revents);
		748	}
262		749
263	static void	750	inline_size void
264	fd_reify (EV_P)	751	fd_reify (EV_P)
265	{	752	{
266	int i;	753	int i;
267		754
268	for (i = 0; i < fdchangecnt; ++i)	755	for (i = 0; i < fdchangecnt; ++i)
269	{	756	{
270	int fd = fdchanges [i];	757	int fd = fdchanges [i];
271	ANFD *anfd = anfds + fd;	758	ANFD *anfd = anfds + fd;
272	struct ev_io *w;	759	ev_io *w;
273		760
274	int events = 0;	761	unsigned char events = 0;
275		762
276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	763	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
277	events |= w->events;	764	events |= (unsigned char)w->events;
278		765
279	anfd->reify = 0;	766	#if EV_SELECT_IS_WINSOCKET
280		767	if (events)
281	if (anfd->events != events)
282	{	768	{
283	method_modify (EV_A_ fd, anfd->events, events);	769	unsigned long arg;
284	anfd->events = events;	770	#ifdef EV_FD_TO_WIN32_HANDLE
		771	anfd->handle = EV_FD_TO_WIN32_HANDLE (fd);
		772	#else
		773	anfd->handle = _get_osfhandle (fd);
		774	#endif
		775	assert (("libev: only socket fds supported in this configuration", ioctlsocket (anfd->handle, FIONREAD, &arg) == 0));
285	}	776	}
		777	#endif
		778
		779	{
		780	unsigned char o_events = anfd->events;
		781	unsigned char o_reify = anfd->reify;
		782
		783	anfd->reify = 0;
		784	anfd->events = events;
		785
		786	if (o_events != events || o_reify & EV__IOFDSET)
		787	backend_modify (EV_A_ fd, o_events, events);
		788	}
286	}	789	}
287		790
288	fdchangecnt = 0;	791	fdchangecnt = 0;
289	}	792	}
290		793
291	static void	794	inline_size void
292	fd_change (EV_P_ int fd)	795	fd_change (EV_P_ int fd, int flags)
293	{	796	{
294	if (anfds [fd].reify || fdchangecnt < 0)	797	unsigned char reify = anfds [fd].reify;
295	return;
296
297	anfds [fd].reify = 1;	798	anfds [fd].reify |= flags;
298		799
		800	if (expect_true (!reify))
		801	{
299	++fdchangecnt;	802	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
301	fdchanges [fdchangecnt - 1] = fd;	804	fdchanges [fdchangecnt - 1] = fd;
		805	}
302	}	806	}
303		807
304	static void	808	inline_speed void
305	fd_kill (EV_P_ int fd)	809	fd_kill (EV_P_ int fd)
306	{	810	{
307	struct ev_io *w;	811	ev_io *w;
308		812
309	while ((w = (struct ev_io *)anfds [fd].head))	813	while ((w = (ev_io *)anfds [fd].head))
310	{	814	{
311	ev_io_stop (EV_A_ w);	815	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	816	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
313	}	817	}
		818	}
		819
		820	inline_size int
		821	fd_valid (int fd)
		822	{
		823	#ifdef _WIN32
		824	return _get_osfhandle (fd) != -1;
		825	#else
		826	return fcntl (fd, F_GETFD) != -1;
		827	#endif
314	}	828	}
315		829
316	/* called on EBADF to verify fds */	830	/* called on EBADF to verify fds */
317	static void	831	static void noinline
318	fd_ebadf (EV_P)	832	fd_ebadf (EV_P)
319	{	833	{
320	int fd;	834	int fd;
321		835
322	for (fd = 0; fd < anfdmax; ++fd)	836	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	837	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	838	if (!fd_valid (fd) && errno == EBADF)
325	fd_kill (EV_A_ fd);	839	fd_kill (EV_A_ fd);
326	}	840	}
327		841
328	/* called on ENOMEM in select/poll to kill some fds and retry */	842	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	843	static void noinline
330	fd_enomem (EV_P)	844	fd_enomem (EV_P)
331	{	845	{
332	int fd = anfdmax;	846	int fd;
333		847
334	while (fd--)	848	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	849	if (anfds [fd].events)
336	{	850	{
337	close (fd);
338	fd_kill (EV_A_ fd);	851	fd_kill (EV_A_ fd);
339	return;	852	return;
340	}	853	}
341	}	854	}
342		855
		856	/* usually called after fork if backend needs to re-arm all fds from scratch */
		857	static void noinline
		858	fd_rearm_all (EV_P)
		859	{
		860	int fd;
		861
		862	for (fd = 0; fd < anfdmax; ++fd)
		863	if (anfds [fd].events)
		864	{
		865	anfds [fd].events = 0;
		866	anfds [fd].emask = 0;
		867	fd_change (EV_A_ fd, EV__IOFDSET | 1);
		868	}
		869	}
		870
343	/*****************************************************************************/	871	/*****************************************************************************/
344		872
345	static void	873	/*
346	upheap (WT *heap, int k)	874	* the heap functions want a real array index. array index 0 uis guaranteed to not
347	{	875	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
348	WT w = heap [k];	876	* the branching factor of the d-tree.
		877	*/
349		878
350	while (k && heap [k >> 1]->at > w->at)	879	/*
351	{	880	* at the moment we allow libev the luxury of two heaps,
352	heap [k] = heap [k >> 1];	881	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
353	heap [k]->active = k + 1;	882	* which is more cache-efficient.
354	k >>= 1;	883	* the difference is about 5% with 50000+ watchers.
355	}	884	*/
		885	#if EV_USE_4HEAP
356		886
357	heap [k] = w;	887	#define DHEAP 4
358	heap [k]->active = k + 1;	888	#define HEAP0 (DHEAP - 1) /* index of first element in heap */
		889	#define HPARENT(k) ((((k) - HEAP0 - 1) / DHEAP) + HEAP0)
		890	#define UPHEAP_DONE(p,k) ((p) == (k))
359		891
360	}	892	/* away from the root */
361		893	inline_speed void
362	static void
363	downheap (WT *heap, int N, int k)	894	downheap (ANHE *heap, int N, int k)
364	{	895	{
365	WT w = heap [k];	896	ANHE he = heap [k];
		897	ANHE *E = heap + N + HEAP0;
366		898
367	while (k < (N >> 1))	899	for (;;)
368	{	900	{
369	int j = k << 1;	901	ev_tstamp minat;
		902	ANHE *minpos;
		903	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
370		904
371	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)	905	/* find minimum child */
		906	if (expect_true (pos + DHEAP - 1 < E))
372	++j;	907	{
373		908	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
374	if (w->at <= heap [j]->at)	909	if ( ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		910	if ( ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		911	if ( ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		912	}
		913	else if (pos < E)
		914	{
		915	/* slow path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
		916	if (pos + 1 < E && ANHE_at (pos [1]) < minat) (minpos = pos + 1), (minat = ANHE_at (*minpos));
		917	if (pos + 2 < E && ANHE_at (pos [2]) < minat) (minpos = pos + 2), (minat = ANHE_at (*minpos));
		918	if (pos + 3 < E && ANHE_at (pos [3]) < minat) (minpos = pos + 3), (minat = ANHE_at (*minpos));
		919	}
		920	else
375	break;	921	break;
376		922
		923	if (ANHE_at (he) <= minat)
		924	break;
		925
		926	heap [k] = *minpos;
		927	ev_active (ANHE_w (*minpos)) = k;
		928
		929	k = minpos - heap;
		930	}
		931
		932	heap [k] = he;
		933	ev_active (ANHE_w (he)) = k;
		934	}
		935
		936	#else /* 4HEAP */
		937
		938	#define HEAP0 1
		939	#define HPARENT(k) ((k) >> 1)
		940	#define UPHEAP_DONE(p,k) (!(p))
		941
		942	/* away from the root */
		943	inline_speed void
		944	downheap (ANHE *heap, int N, int k)
		945	{
		946	ANHE he = heap [k];
		947
		948	for (;;)
		949	{
		950	int c = k << 1;
		951
		952	if (c > N + HEAP0 - 1)
		953	break;
		954
		955	c += c + 1 < N + HEAP0 && ANHE_at (heap [c]) > ANHE_at (heap [c + 1])
		956	? 1 : 0;
		957
		958	if (ANHE_at (he) <= ANHE_at (heap [c]))
		959	break;
		960
377	heap [k] = heap [j];	961	heap [k] = heap [c];
378	heap [k]->active = k + 1;	962	ev_active (ANHE_w (heap [k])) = k;
		963
379	k = j;	964	k = c;
380	}	965	}
381		966
382	heap [k] = w;	967	heap [k] = he;
383	heap [k]->active = k + 1;	968	ev_active (ANHE_w (he)) = k;
		969	}
		970	#endif
		971
		972	/* towards the root */
		973	inline_speed void
		974	upheap (ANHE *heap, int k)
		975	{
		976	ANHE he = heap [k];
		977
		978	for (;;)
		979	{
		980	int p = HPARENT (k);
		981
		982	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
		983	break;
		984
		985	heap [k] = heap [p];
		986	ev_active (ANHE_w (heap [k])) = k;
		987	k = p;
		988	}
		989
		990	heap [k] = he;
		991	ev_active (ANHE_w (he)) = k;
		992	}
		993
		994	inline_size void
		995	adjustheap (ANHE *heap, int N, int k)
		996	{
		997	if (k > HEAP0 && ANHE_at (heap [HPARENT (k)]) >= ANHE_at (heap [k]))
		998	upheap (heap, k);
		999	else
		1000	downheap (heap, N, k);
		1001	}
		1002
		1003	/* rebuild the heap: this function is used only once and executed rarely */
		1004	inline_size void
		1005	reheap (ANHE *heap, int N)
		1006	{
		1007	int i;
		1008
		1009	/* we don't use floyds algorithm, upheap is simpler and is more cache-efficient */
		1010	/* also, this is easy to implement and correct for both 2-heaps and 4-heaps */
		1011	for (i = 0; i < N; ++i)
		1012	upheap (heap, i + HEAP0);
384	}	1013	}
385		1014
386	/*****************************************************************************/	1015	/*****************************************************************************/
387		1016
388	typedef struct	1017	typedef struct
389	{	1018	{
390	struct ev_watcher_list *head;	1019	WL head;
391	sig_atomic_t volatile gotsig;	1020	EV_ATOMIC_T gotsig;
392	} ANSIG;	1021	} ANSIG;
393		1022
394	static ANSIG *signals;	1023	static ANSIG *signals;
395	static int signalmax;	1024	static int signalmax;
396		1025
397	static int sigpipe [2];	1026	static EV_ATOMIC_T gotsig;
398	static sig_atomic_t volatile gotsig;	1027
		1028	/*****************************************************************************/
		1029
		1030	inline_speed void
		1031	fd_intern (int fd)
		1032	{
		1033	#ifdef _WIN32
		1034	unsigned long arg = 1;
		1035	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		1036	#else
		1037	fcntl (fd, F_SETFD, FD_CLOEXEC);
		1038	fcntl (fd, F_SETFL, O_NONBLOCK);
		1039	#endif
		1040	}
		1041
		1042	static void noinline
		1043	evpipe_init (EV_P)
		1044	{
		1045	if (!ev_is_active (&pipeev))
		1046	{
		1047	#if EV_USE_EVENTFD
		1048	if ((evfd = eventfd (0, 0)) >= 0)
		1049	{
		1050	evpipe [0] = -1;
		1051	fd_intern (evfd);
		1052	ev_io_set (&pipeev, evfd, EV_READ);
		1053	}
		1054	else
		1055	#endif
		1056	{
		1057	while (pipe (evpipe))
		1058	ev_syserr ("(libev) error creating signal/async pipe");
		1059
		1060	fd_intern (evpipe [0]);
		1061	fd_intern (evpipe [1]);
		1062	ev_io_set (&pipeev, evpipe [0], EV_READ);
		1063	}
		1064
		1065	ev_io_start (EV_A_ &pipeev);
		1066	ev_unref (EV_A); /* watcher should not keep loop alive */
		1067	}
		1068	}
		1069
		1070	inline_size void
		1071	evpipe_write (EV_P_ EV_ATOMIC_T *flag)
		1072	{
		1073	if (!*flag)
		1074	{
		1075	int old_errno = errno; /* save errno because write might clobber it */
		1076
		1077	*flag = 1;
		1078
		1079	#if EV_USE_EVENTFD
		1080	if (evfd >= 0)
		1081	{
		1082	uint64_t counter = 1;
		1083	write (evfd, &counter, sizeof (uint64_t));
		1084	}
		1085	else
		1086	#endif
		1087	write (evpipe [1], &old_errno, 1);
		1088
		1089	errno = old_errno;
		1090	}
		1091	}
399		1092
400	static void	1093	static void
401	signals_init (ANSIG *base, int count)	1094	pipecb (EV_P_ ev_io *iow, int revents)
402	{	1095	{
403	while (count--)	1096	#if EV_USE_EVENTFD
		1097	if (evfd >= 0)
		1098	{
		1099	uint64_t counter;
		1100	read (evfd, &counter, sizeof (uint64_t));
404	{	1101	}
405	base->head = 0;	1102	else
		1103	#endif
		1104	{
		1105	char dummy;
		1106	read (evpipe [0], &dummy, 1);
		1107	}
		1108
		1109	if (gotsig && ev_is_default_loop (EV_A))
		1110	{
		1111	int signum;
406	base->gotsig = 0;	1112	gotsig = 0;
407		1113
408	++base;	1114	for (signum = signalmax; signum--; )
		1115	if (signals [signum].gotsig)
		1116	ev_feed_signal_event (EV_A_ signum + 1);
		1117	}
		1118
		1119	#if EV_ASYNC_ENABLE
		1120	if (gotasync)
409	}	1121	{
		1122	int i;
		1123	gotasync = 0;
		1124
		1125	for (i = asynccnt; i--; )
		1126	if (asyncs [i]->sent)
		1127	{
		1128	asyncs [i]->sent = 0;
		1129	ev_feed_event (EV_A_ asyncs [i], EV_ASYNC);
		1130	}
		1131	}
		1132	#endif
410	}	1133	}
		1134
		1135	/*****************************************************************************/
411		1136
412	static void	1137	static void
413	sighandler (int signum)	1138	ev_sighandler (int signum)
414	{	1139	{
		1140	#if EV_MULTIPLICITY
		1141	struct ev_loop *loop = &default_loop_struct;
		1142	#endif
		1143
		1144	#if _WIN32
		1145	signal (signum, ev_sighandler);
		1146	#endif
		1147
415	signals [signum - 1].gotsig = 1;	1148	signals [signum - 1].gotsig = 1;
416		1149	evpipe_write (EV_A_ &gotsig);
417	if (!gotsig)
418	{
419	int old_errno = errno;
420	gotsig = 1;
421	write (sigpipe [1], &signum, 1);
422	errno = old_errno;
423	}
424	}	1150	}
425		1151
426	static void	1152	void noinline
427	sigcb (EV_P_ struct ev_io *iow, int revents)	1153	ev_feed_signal_event (EV_P_ int signum)
428	{	1154	{
429	struct ev_watcher_list *w;	1155	WL w;
		1156
		1157	#if EV_MULTIPLICITY
		1158	assert (("libev: feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		1159	#endif
		1160
430	int signum;	1161	--signum;
431		1162
432	read (sigpipe [0], &revents, 1);	1163	if (signum < 0 || signum >= signalmax)
433	gotsig = 0;	1164	return;
434		1165
435	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)
437	{
438	signals [signum].gotsig = 0;	1166	signals [signum].gotsig = 0;
439		1167
440	for (w = signals [signum].head; w; w = w->next)	1168	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);	1169	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}
444
445	static void
446	siginit (EV_P)
447	{
448	#ifndef WIN32
449	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
450	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
451
452	/* rather than sort out wether we really need nb, set it */
453	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
454	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
455	#endif
456
457	ev_io_set (&sigev, sigpipe [0], EV_READ);
458	ev_io_start (EV_A_ &sigev);
459	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	1170	}
461		1171
462	/*****************************************************************************/	1172	/*****************************************************************************/
463		1173
		1174	static WL childs [EV_PID_HASHSIZE];
		1175
464	#ifndef WIN32	1176	#ifndef _WIN32
		1177
		1178	static ev_signal childev;
		1179
		1180	#ifndef WIFCONTINUED
		1181	# define WIFCONTINUED(status) 0
		1182	#endif
		1183
		1184	inline_speed void
		1185	child_reap (EV_P_ int chain, int pid, int status)
		1186	{
		1187	ev_child *w;
		1188	int traced = WIFSTOPPED (status) || WIFCONTINUED (status);
		1189
		1190	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1191	{
		1192	if ((w->pid == pid || !w->pid)
		1193	&& (!traced || (w->flags & 1)))
		1194	{
		1195	ev_set_priority (w, EV_MAXPRI); /* need to do it *now*, this *must* be the same prio as the signal watcher itself */
		1196	w->rpid = pid;
		1197	w->rstatus = status;
		1198	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		1199	}
		1200	}
		1201	}
465		1202
466	#ifndef WCONTINUED	1203	#ifndef WCONTINUED
467	# define WCONTINUED 0	1204	# define WCONTINUED 0
468	#endif	1205	#endif
469		1206
470	static void	1207	static void
471	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{
473	struct ev_child *w;
474
475	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
476	if (w->pid == pid || !w->pid)
477	{
478	w->priority = sw->priority; /* need to do it *now* */
479	w->rpid = pid;
480	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);
482	}
483	}
484
485	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	1208	childcb (EV_P_ ev_signal *sw, int revents)
487	{	1209	{
488	int pid, status;	1210	int pid, status;
489		1211
		1212	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
490	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1213	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
491	{	1214	if (!WCONTINUED
		1215	|| errno != EINVAL
		1216	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1217	return;
		1218
492	/* make sure we are called again until all childs have been reaped */	1219	/* make sure we are called again until all children have been reaped */
		1220	/* we need to do it this way so that the callback gets called before we continue */
493	event (EV_A_ (W)sw, EV_SIGNAL);	1221	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		1222
495	child_reap (EV_A_ sw, pid, pid, status);	1223	child_reap (EV_A_ pid, pid, status);
		1224	if (EV_PID_HASHSIZE > 1)
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	1225	child_reap (EV_A_ 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
497	}
498	}	1226	}
499		1227
500	#endif	1228	#endif
501		1229
502	/*****************************************************************************/	1230	/*****************************************************************************/
503		1231
		1232	#if EV_USE_PORT
		1233	# include "ev_port.c"
		1234	#endif
504	#if EV_USE_KQUEUE	1235	#if EV_USE_KQUEUE
505	# include "ev_kqueue.c"	1236	# include "ev_kqueue.c"
506	#endif	1237	#endif
507	#if EV_USE_EPOLL	1238	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	1239	# include "ev_epoll.c"
509	#endif	1240	#endif
510	#if EV_USEV_POLL	1241	#if EV_USE_POLL
511	# include "ev_poll.c"	1242	# include "ev_poll.c"
512	#endif	1243	#endif
513	#if EV_USE_SELECT	1244	#if EV_USE_SELECT
514	# include "ev_select.c"	1245	# include "ev_select.c"
515	#endif	1246	#endif
…		…
525	{	1256	{
526	return EV_VERSION_MINOR;	1257	return EV_VERSION_MINOR;
527	}	1258	}
528		1259
529	/* return true if we are running with elevated privileges and should ignore env variables */	1260	/* return true if we are running with elevated privileges and should ignore env variables */
530	static int	1261	int inline_size
531	enable_secure (void)	1262	enable_secure (void)
532	{	1263	{
533	#ifdef WIN32	1264	#ifdef _WIN32
534	return 0;	1265	return 0;
535	#else	1266	#else
536	return getuid () != geteuid ()	1267	return getuid () != geteuid ()
537	|| getgid () != getegid ();	1268	|| getgid () != getegid ();
538	#endif	1269	#endif
539	}	1270	}
540		1271
		1272	unsigned int
		1273	ev_supported_backends (void)
		1274	{
		1275	unsigned int flags = 0;
		1276
		1277	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		1278	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		1279	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		1280	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		1281	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		1282
		1283	return flags;
		1284	}
		1285
		1286	unsigned int
		1287	ev_recommended_backends (void)
		1288	{
		1289	unsigned int flags = ev_supported_backends ();
		1290
		1291	#ifndef __NetBSD__
		1292	/* kqueue is borked on everything but netbsd apparently */
		1293	/* it usually doesn't work correctly on anything but sockets and pipes */
		1294	flags &= ~EVBACKEND_KQUEUE;
		1295	#endif
		1296	#ifdef __APPLE__
		1297	/* only select works correctly on that "unix-certified" platform */
		1298	flags &= ~EVBACKEND_KQUEUE; /* horribly broken, even for sockets */
		1299	flags &= ~EVBACKEND_POLL; /* poll is based on kqueue from 10.5 onwards */
		1300	#endif
		1301
		1302	return flags;
		1303	}
		1304
		1305	unsigned int
		1306	ev_embeddable_backends (void)
		1307	{
		1308	int flags = EVBACKEND_EPOLL | EVBACKEND_KQUEUE | EVBACKEND_PORT;
		1309
		1310	/* epoll embeddability broken on all linux versions up to at least 2.6.23 */
		1311	/* please fix it and tell me how to detect the fix */
		1312	flags &= ~EVBACKEND_EPOLL;
		1313
		1314	return flags;
		1315	}
		1316
		1317	unsigned int
		1318	ev_backend (EV_P)
		1319	{
		1320	return backend;
		1321	}
		1322
		1323	unsigned int
		1324	ev_loop_count (EV_P)
		1325	{
		1326	return loop_count;
		1327	}
		1328
		1329	void
		1330	ev_set_io_collect_interval (EV_P_ ev_tstamp interval)
		1331	{
		1332	io_blocktime = interval;
		1333	}
		1334
		1335	void
		1336	ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval)
		1337	{
		1338	timeout_blocktime = interval;
		1339	}
		1340
		1341	static void noinline
		1342	loop_init (EV_P_ unsigned int flags)
		1343	{
		1344	if (!backend)
		1345	{
		1346	#if EV_USE_REALTIME
		1347	if (!have_realtime)
		1348	{
		1349	struct timespec ts;
		1350
		1351	if (!clock_gettime (CLOCK_REALTIME, &ts))
		1352	have_realtime = 1;
		1353	}
		1354	#endif
		1355
		1356	#if EV_USE_MONOTONIC
		1357	if (!have_monotonic)
		1358	{
		1359	struct timespec ts;
		1360
		1361	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		1362	have_monotonic = 1;
		1363	}
		1364	#endif
		1365
		1366	ev_rt_now = ev_time ();
		1367	mn_now = get_clock ();
		1368	now_floor = mn_now;
		1369	rtmn_diff = ev_rt_now - mn_now;
		1370
		1371	io_blocktime = 0.;
		1372	timeout_blocktime = 0.;
		1373	backend = 0;
		1374	backend_fd = -1;
		1375	gotasync = 0;
		1376	#if EV_USE_INOTIFY
		1377	fs_fd = -2;
		1378	#endif
		1379
		1380	/* pid check not overridable via env */
		1381	#ifndef _WIN32
		1382	if (flags & EVFLAG_FORKCHECK)
		1383	curpid = getpid ();
		1384	#endif
		1385
		1386	if (!(flags & EVFLAG_NOENV)
		1387	&& !enable_secure ()
		1388	&& getenv ("LIBEV_FLAGS"))
		1389	flags = atoi (getenv ("LIBEV_FLAGS"));
		1390
		1391	if (!(flags & 0x0000ffffU))
		1392	flags |= ev_recommended_backends ();
		1393
		1394	#if EV_USE_PORT
		1395	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		1396	#endif
		1397	#if EV_USE_KQUEUE
		1398	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		1399	#endif
		1400	#if EV_USE_EPOLL
		1401	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		1402	#endif
		1403	#if EV_USE_POLL
		1404	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
		1405	#endif
		1406	#if EV_USE_SELECT
		1407	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
		1408	#endif
		1409
		1410	ev_init (&pipeev, pipecb);
		1411	ev_set_priority (&pipeev, EV_MAXPRI);
		1412	}
		1413	}
		1414
		1415	static void noinline
		1416	loop_destroy (EV_P)
		1417	{
		1418	int i;
		1419
		1420	if (ev_is_active (&pipeev))
		1421	{
		1422	ev_ref (EV_A); /* signal watcher */
		1423	ev_io_stop (EV_A_ &pipeev);
		1424
		1425	#if EV_USE_EVENTFD
		1426	if (evfd >= 0)
		1427	close (evfd);
		1428	#endif
		1429
		1430	if (evpipe [0] >= 0)
		1431	{
		1432	close (evpipe [0]);
		1433	close (evpipe [1]);
		1434	}
		1435	}
		1436
		1437	#if EV_USE_INOTIFY
		1438	if (fs_fd >= 0)
		1439	close (fs_fd);
		1440	#endif
		1441
		1442	if (backend_fd >= 0)
		1443	close (backend_fd);
		1444
		1445	#if EV_USE_PORT
		1446	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1447	#endif
		1448	#if EV_USE_KQUEUE
		1449	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		1450	#endif
		1451	#if EV_USE_EPOLL
		1452	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1453	#endif
		1454	#if EV_USE_POLL
		1455	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1456	#endif
		1457	#if EV_USE_SELECT
		1458	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1459	#endif
		1460
		1461	for (i = NUMPRI; i--; )
		1462	{
		1463	array_free (pending, [i]);
		1464	#if EV_IDLE_ENABLE
		1465	array_free (idle, [i]);
		1466	#endif
		1467	}
		1468
		1469	ev_free (anfds); anfdmax = 0;
		1470
		1471	/* have to use the microsoft-never-gets-it-right macro */
		1472	array_free (rfeed, EMPTY);
		1473	array_free (fdchange, EMPTY);
		1474	array_free (timer, EMPTY);
		1475	#if EV_PERIODIC_ENABLE
		1476	array_free (periodic, EMPTY);
		1477	#endif
		1478	#if EV_FORK_ENABLE
		1479	array_free (fork, EMPTY);
		1480	#endif
		1481	array_free (prepare, EMPTY);
		1482	array_free (check, EMPTY);
		1483	#if EV_ASYNC_ENABLE
		1484	array_free (async, EMPTY);
		1485	#endif
		1486
		1487	backend = 0;
		1488	}
		1489
		1490	#if EV_USE_INOTIFY
		1491	inline_size void infy_fork (EV_P);
		1492	#endif
		1493
		1494	inline_size void
		1495	loop_fork (EV_P)
		1496	{
		1497	#if EV_USE_PORT
		1498	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1499	#endif
		1500	#if EV_USE_KQUEUE
		1501	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1502	#endif
		1503	#if EV_USE_EPOLL
		1504	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1505	#endif
		1506	#if EV_USE_INOTIFY
		1507	infy_fork (EV_A);
		1508	#endif
		1509
		1510	if (ev_is_active (&pipeev))
		1511	{
		1512	/* this "locks" the handlers against writing to the pipe */
		1513	/* while we modify the fd vars */
		1514	gotsig = 1;
		1515	#if EV_ASYNC_ENABLE
		1516	gotasync = 1;
		1517	#endif
		1518
		1519	ev_ref (EV_A);
		1520	ev_io_stop (EV_A_ &pipeev);
		1521
		1522	#if EV_USE_EVENTFD
		1523	if (evfd >= 0)
		1524	close (evfd);
		1525	#endif
		1526
		1527	if (evpipe [0] >= 0)
		1528	{
		1529	close (evpipe [0]);
		1530	close (evpipe [1]);
		1531	}
		1532
		1533	evpipe_init (EV_A);
		1534	/* now iterate over everything, in case we missed something */
		1535	pipecb (EV_A_ &pipeev, EV_READ);
		1536	}
		1537
		1538	postfork = 0;
		1539	}
		1540
		1541	#if EV_MULTIPLICITY
		1542
		1543	struct ev_loop *
		1544	ev_loop_new (unsigned int flags)
		1545	{
		1546	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1547
		1548	memset (loop, 0, sizeof (struct ev_loop));
		1549
		1550	loop_init (EV_A_ flags);
		1551
		1552	if (ev_backend (EV_A))
		1553	return loop;
		1554
		1555	return 0;
		1556	}
		1557
		1558	void
		1559	ev_loop_destroy (EV_P)
		1560	{
		1561	loop_destroy (EV_A);
		1562	ev_free (loop);
		1563	}
		1564
		1565	void
		1566	ev_loop_fork (EV_P)
		1567	{
		1568	postfork = 1; /* must be in line with ev_default_fork */
		1569	}
		1570
		1571	#if EV_VERIFY
		1572	static void noinline
		1573	verify_watcher (EV_P_ W w)
		1574	{
		1575	assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
		1576
		1577	if (w->pending)
		1578	assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
		1579	}
		1580
		1581	static void noinline
		1582	verify_heap (EV_P_ ANHE *heap, int N)
		1583	{
		1584	int i;
		1585
		1586	for (i = HEAP0; i < N + HEAP0; ++i)
		1587	{
		1588	assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
		1589	assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
		1590	assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
		1591
		1592	verify_watcher (EV_A_ (W)ANHE_w (heap [i]));
		1593	}
		1594	}
		1595
		1596	static void noinline
		1597	array_verify (EV_P_ W *ws, int cnt)
		1598	{
		1599	while (cnt--)
		1600	{
		1601	assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
		1602	verify_watcher (EV_A_ ws [cnt]);
		1603	}
		1604	}
		1605	#endif
		1606
		1607	void
		1608	ev_loop_verify (EV_P)
		1609	{
		1610	#if EV_VERIFY
		1611	int i;
		1612	WL w;
		1613
		1614	assert (activecnt >= -1);
		1615
		1616	assert (fdchangemax >= fdchangecnt);
		1617	for (i = 0; i < fdchangecnt; ++i)
		1618	assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
		1619
		1620	assert (anfdmax >= 0);
		1621	for (i = 0; i < anfdmax; ++i)
		1622	for (w = anfds [i].head; w; w = w->next)
		1623	{
		1624	verify_watcher (EV_A_ (W)w);
		1625	assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
		1626	assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
		1627	}
		1628
		1629	assert (timermax >= timercnt);
		1630	verify_heap (EV_A_ timers, timercnt);
		1631
		1632	#if EV_PERIODIC_ENABLE
		1633	assert (periodicmax >= periodiccnt);
		1634	verify_heap (EV_A_ periodics, periodiccnt);
		1635	#endif
		1636
		1637	for (i = NUMPRI; i--; )
		1638	{
		1639	assert (pendingmax [i] >= pendingcnt [i]);
		1640	#if EV_IDLE_ENABLE
		1641	assert (idleall >= 0);
		1642	assert (idlemax [i] >= idlecnt [i]);
		1643	array_verify (EV_A_ (W *)idles [i], idlecnt [i]);
		1644	#endif
		1645	}
		1646
		1647	#if EV_FORK_ENABLE
		1648	assert (forkmax >= forkcnt);
		1649	array_verify (EV_A_ (W *)forks, forkcnt);
		1650	#endif
		1651
		1652	#if EV_ASYNC_ENABLE
		1653	assert (asyncmax >= asynccnt);
		1654	array_verify (EV_A_ (W *)asyncs, asynccnt);
		1655	#endif
		1656
		1657	assert (preparemax >= preparecnt);
		1658	array_verify (EV_A_ (W *)prepares, preparecnt);
		1659
		1660	assert (checkmax >= checkcnt);
		1661	array_verify (EV_A_ (W *)checks, checkcnt);
		1662
		1663	# if 0
		1664	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		1665	for (signum = signalmax; signum--; ) if (signals [signum].gotsig)
		1666	# endif
		1667	#endif
		1668	}
		1669
		1670	#endif /* multiplicity */
		1671
		1672	#if EV_MULTIPLICITY
		1673	struct ev_loop *
		1674	ev_default_loop_init (unsigned int flags)
		1675	#else
541	int	1676	int
542	ev_method (EV_P)	1677	ev_default_loop (unsigned int flags)
		1678	#endif
543	{	1679	{
544	return method;	1680	if (!ev_default_loop_ptr)
545	}
546
547	static void
548	loop_init (EV_P_ int methods)
549	{
550	if (!method)
551	{
552	#if EV_USE_MONOTONIC
553	{	1681	{
554	struct timespec ts;	1682	#if EV_MULTIPLICITY
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	1683	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
556	have_monotonic = 1;	1684	#else
557	}	1685	ev_default_loop_ptr = 1;
558	#endif	1686	#endif
559		1687
560	rt_now = ev_time ();	1688	loop_init (EV_A_ flags);
561	mn_now = get_clock ();
562	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;
564		1689
565	if (pipe (sigpipe))	1690	if (ev_backend (EV_A))
566	return 0;
567
568	if (methods == EVMETHOD_AUTO)
569	if (!enable_secure () && getenv ("LIBmethodS"))
570	methods = atoi (getenv ("LIBmethodS"));
571	else
572	methods = EVMETHOD_ANY;
573
574	method = 0;
575	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577	#endif
578	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580	#endif
581	#if EV_USEV_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583	#endif
584	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586	#endif
587
588	if (method)
589	{	1691	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);
593
594	#ifndef WIN32	1692	#ifndef _WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	1693	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	1694	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	1695	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	1696	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	1697	#endif
600	}	1698	}
		1699	else
		1700	ev_default_loop_ptr = 0;
601	}	1701	}
602		1702
603	return method;	1703	return ev_default_loop_ptr;
604	}	1704	}
605		1705
		1706	void
		1707	ev_default_destroy (void)
		1708	{
606	#ifdef EV_MULTIPLICITY	1709	#if EV_MULTIPLICITY
607		1710	struct ev_loop *loop = ev_default_loop_ptr;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/*TODO*/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	1711	#endif
		1712
		1713	ev_default_loop_ptr = 0;
		1714
		1715	#ifndef _WIN32
		1716	ev_ref (EV_A); /* child watcher */
		1717	ev_signal_stop (EV_A_ &childev);
		1718	#endif
		1719
		1720	loop_destroy (EV_A);
		1721	}
		1722
		1723	void
		1724	ev_default_fork (void)
		1725	{
		1726	#if EV_MULTIPLICITY
		1727	struct ev_loop *loop = ev_default_loop_ptr;
		1728	#endif
		1729
		1730	postfork = 1; /* must be in line with ev_loop_fork */
		1731	}
634		1732
635	/*****************************************************************************/	1733	/*****************************************************************************/
636		1734
637	void	1735	void
638	ev_fork_prepare (void)	1736	ev_invoke (EV_P_ void *w, int revents)
639	{	1737	{
640	/* nop */	1738	EV_CB_INVOKE ((W)w, revents);
641	}	1739	}
642		1740
643	void	1741	inline_speed void
644	ev_fork_parent (void)
645	{
646	/* nop */
647	}
648
649	void
650	ev_fork_child (void)
651	{
652	/*TODO*/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}
666
667	/*****************************************************************************/
668
669	static void
670	call_pending (EV_P)	1742	call_pending (EV_P)
671	{	1743	{
672	int pri;	1744	int pri;
673		1745
674	for (pri = NUMPRI; pri--; )	1746	for (pri = NUMPRI; pri--; )
675	while (pendingcnt [pri])	1747	while (pendingcnt [pri])
676	{	1748	{
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		1750
679	if (p->w)	1751	if (expect_true (p->w))
680	{	1752	{
		1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1754
681	p->w->pending = 0;	1755	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	1756	EV_CB_INVOKE (p->w, p->events);
		1757	EV_FREQUENT_CHECK;
683	}	1758	}
684	}	1759	}
685	}	1760	}
686		1761
687	static void	1762	#if EV_IDLE_ENABLE
		1763	inline_size void
688	timers_reify (EV_P)	1764	idle_reify (EV_P)
689	{	1765	{
690	while (timercnt && timers [0]->at <= mn_now)	1766	if (expect_false (idleall))
691	{	1767	{
692	struct ev_timer *w = timers [0];	1768	int pri;
693		1769
694	/* first reschedule or stop timer */	1770	for (pri = NUMPRI; pri--; )
695	if (w->repeat)
696	{	1771	{
697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1772	if (pendingcnt [pri])
698	w->at = mn_now + w->repeat;	1773	break;
699	downheap ((WT *)timers, timercnt, 0);
700	}
701	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		1774
704	event (EV_A_ (W)w, EV_TIMEOUT);	1775	if (idlecnt [pri])
705	}
706	}
707
708	static void
709	periodics_reify (EV_P)
710	{
711	while (periodiccnt && periodics [0]->at <= rt_now)
712	{
713	struct ev_periodic *w = periodics [0];
714
715	/* first reschedule or stop timer */
716	if (w->interval)
717	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);
721	}
722	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724
725	event (EV_A_ (W)w, EV_PERIODIC);
726	}
727	}
728
729	static void
730	periodics_reschedule (EV_P)
731	{
732	int i;
733
734	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)
736	{
737	struct ev_periodic *w = periodics [i];
738
739	if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
742
743	if (fabs (diff) >= 1e-4)
744	{	1776	{
745	ev_periodic_stop (EV_A_ w);	1777	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
746	ev_periodic_start (EV_A_ w);	1778	break;
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}	1779	}
750	}	1780	}
751	}	1781	}
752	}	1782	}
		1783	#endif
753		1784
754	inline int	1785	inline_size void
755	time_update_monotonic (EV_P)	1786	timers_reify (EV_P)
756	{	1787	{
757	mn_now = get_clock ();	1788	EV_FREQUENT_CHECK;
758		1789
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1790	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
760	{
761	rt_now = rtmn_diff + mn_now;
762	return 0;
763	}	1791	{
764	else	1792	do
		1793	{
		1794	ev_timer *w = (ev_timer *)ANHE_w (timers [HEAP0]);
		1795
		1796	/*assert (("libev: inactive timer on timer heap detected", ev_is_active (w)));*/
		1797
		1798	/* first reschedule or stop timer */
		1799	if (w->repeat)
		1800	{
		1801	ev_at (w) += w->repeat;
		1802	if (ev_at (w) < mn_now)
		1803	ev_at (w) = mn_now;
		1804
		1805	assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1806
		1807	ANHE_at_cache (timers [HEAP0]);
		1808	downheap (timers, timercnt, HEAP0);
		1809	}
		1810	else
		1811	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1812
		1813	EV_FREQUENT_CHECK;
		1814	feed_reverse (EV_A_ (W)w);
		1815	}
		1816	while (timercnt && ANHE_at (timers [HEAP0]) < mn_now);
		1817
		1818	feed_reverse_done (EV_A_ EV_TIMEOUT);
765	{	1819	}
766	now_floor = mn_now;	1820	}
767	rt_now = ev_time ();	1821
768	return 1;	1822	#if EV_PERIODIC_ENABLE
		1823	inline_size void
		1824	periodics_reify (EV_P)
		1825	{
		1826	EV_FREQUENT_CHECK;
		1827
		1828	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now)
769	}	1829	{
770	}	1830	int feed_count = 0;
771		1831
772	static void	1832	do
773	time_update (EV_P)	1833	{
		1834	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [HEAP0]);
		1835
		1836	/*assert (("libev: inactive timer on periodic heap detected", ev_is_active (w)));*/
		1837
		1838	/* first reschedule or stop timer */
		1839	if (w->reschedule_cb)
		1840	{
		1841	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1842
		1843	assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
		1844
		1845	ANHE_at_cache (periodics [HEAP0]);
		1846	downheap (periodics, periodiccnt, HEAP0);
		1847	}
		1848	else if (w->interval)
		1849	{
		1850	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1851	/* if next trigger time is not sufficiently in the future, put it there */
		1852	/* this might happen because of floating point inexactness */
		1853	if (ev_at (w) - ev_rt_now < TIME_EPSILON)
		1854	{
		1855	ev_at (w) += w->interval;
		1856
		1857	/* if interval is unreasonably low we might still have a time in the past */
		1858	/* so correct this. this will make the periodic very inexact, but the user */
		1859	/* has effectively asked to get triggered more often than possible */
		1860	if (ev_at (w) < ev_rt_now)
		1861	ev_at (w) = ev_rt_now;
		1862	}
		1863
		1864	ANHE_at_cache (periodics [HEAP0]);
		1865	downheap (periodics, periodiccnt, HEAP0);
		1866	}
		1867	else
		1868	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
		1869
		1870	EV_FREQUENT_CHECK;
		1871	feed_reverse (EV_A_ (W)w);
		1872	}
		1873	while (periodiccnt && ANHE_at (periodics [HEAP0]) < ev_rt_now);
		1874
		1875	feed_reverse_done (EV_A_ EV_PERIODIC);
		1876	}
		1877	}
		1878
		1879	static void noinline
		1880	periodics_reschedule (EV_P)
		1881	{
		1882	int i;
		1883
		1884	/* adjust periodics after time jump */
		1885	for (i = HEAP0; i < periodiccnt + HEAP0; ++i)
		1886	{
		1887	ev_periodic *w = (ev_periodic *)ANHE_w (periodics [i]);
		1888
		1889	if (w->reschedule_cb)
		1890	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		1891	else if (w->interval)
		1892	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1893
		1894	ANHE_at_cache (periodics [i]);
		1895	}
		1896
		1897	reheap (periodics, periodiccnt);
		1898	}
		1899	#endif
		1900
		1901	static void noinline
		1902	timers_reschedule (EV_P_ ev_tstamp adjust)
		1903	{
		1904	int i;
		1905
		1906	for (i = 0; i < timercnt; ++i)
		1907	{
		1908	ANHE *he = timers + i + HEAP0;
		1909	ANHE_w (*he)->at += adjust;
		1910	ANHE_at_cache (*he);
		1911	}
		1912	}
		1913
		1914	inline_speed void
		1915	time_update (EV_P_ ev_tstamp max_block)
774	{	1916	{
775	int i;	1917	int i;
776		1918
777	#if EV_USE_MONOTONIC	1919	#if EV_USE_MONOTONIC
778	if (expect_true (have_monotonic))	1920	if (expect_true (have_monotonic))
779	{	1921	{
780	if (time_update_monotonic (EV_A))	1922	ev_tstamp odiff = rtmn_diff;
		1923
		1924	mn_now = get_clock ();
		1925
		1926	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1927	/* interpolate in the meantime */
		1928	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
781	{	1929	{
782	ev_tstamp odiff = rtmn_diff;	1930	ev_rt_now = rtmn_diff + mn_now;
		1931	return;
		1932	}
783		1933
		1934	now_floor = mn_now;
		1935	ev_rt_now = ev_time ();
		1936
784	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1937	/* loop a few times, before making important decisions.
		1938	* on the choice of "4": one iteration isn't enough,
		1939	* in case we get preempted during the calls to
		1940	* ev_time and get_clock. a second call is almost guaranteed
		1941	* to succeed in that case, though. and looping a few more times
		1942	* doesn't hurt either as we only do this on time-jumps or
		1943	* in the unlikely event of having been preempted here.
		1944	*/
		1945	for (i = 4; --i; )
785	{	1946	{
786	rtmn_diff = rt_now - mn_now;	1947	rtmn_diff = ev_rt_now - mn_now;
787		1948
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1949	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
789	return; /* all is well */	1950	return; /* all is well */
790		1951
791	rt_now = ev_time ();	1952	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1953	mn_now = get_clock ();
793	now_floor = mn_now;	1954	now_floor = mn_now;
794	}	1955	}
795		1956
		1957	/* no timer adjustment, as the monotonic clock doesn't jump */
		1958	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1959	# if EV_PERIODIC_ENABLE
		1960	periodics_reschedule (EV_A);
		1961	# endif
		1962	}
		1963	else
		1964	#endif
		1965	{
		1966	ev_rt_now = ev_time ();
		1967
		1968	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1969	{
		1970	/* adjust timers. this is easy, as the offset is the same for all of them */
		1971	timers_reschedule (EV_A_ ev_rt_now - mn_now);
		1972	#if EV_PERIODIC_ENABLE
796	periodics_reschedule (EV_A);	1973	periodics_reschedule (EV_A);
797	/* no timer adjustment, as the monotonic clock doesn't jump */	1974	#endif
798	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
799	}	1975	}
800	}
801	else
802	#endif
803	{
804	rt_now = ev_time ();
805		1976
806	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
807	{
808	periodics_reschedule (EV_A);
809
810	/* adjust timers. this is easy, as the offset is the same for all */
811	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;
813	}
814
815	mn_now = rt_now;	1977	mn_now = ev_rt_now;
816	}	1978	}
817	}
818
819	void
820	ev_ref (EV_P)
821	{
822	++activecnt;
823	}
824
825	void
826	ev_unref (EV_P)
827	{
828	--activecnt;
829	}	1979	}
830		1980
831	static int loop_done;	1981	static int loop_done;
832		1982
833	void	1983	void
834	ev_loop (EV_P_ int flags)	1984	ev_loop (EV_P_ int flags)
835	{	1985	{
836	double block;	1986	loop_done = EVUNLOOP_CANCEL;
837	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1987
		1988	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
838		1989
839	do	1990	do
840	{	1991	{
		1992	#if EV_VERIFY >= 2
		1993	ev_loop_verify (EV_A);
		1994	#endif
		1995
		1996	#ifndef _WIN32
		1997	if (expect_false (curpid)) /* penalise the forking check even more */
		1998	if (expect_false (getpid () != curpid))
		1999	{
		2000	curpid = getpid ();
		2001	postfork = 1;
		2002	}
		2003	#endif
		2004
		2005	#if EV_FORK_ENABLE
		2006	/* we might have forked, so queue fork handlers */
		2007	if (expect_false (postfork))
		2008	if (forkcnt)
		2009	{
		2010	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		2011	call_pending (EV_A);
		2012	}
		2013	#endif
		2014
841	/* queue check watchers (and execute them) */	2015	/* queue prepare watchers (and execute them) */
842	if (expect_false (preparecnt))	2016	if (expect_false (preparecnt))
843	{	2017	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2018	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	2019	call_pending (EV_A);
846	}	2020	}
847		2021
		2022	/* we might have forked, so reify kernel state if necessary */
		2023	if (expect_false (postfork))
		2024	loop_fork (EV_A);
		2025
848	/* update fd-related kernel structures */	2026	/* update fd-related kernel structures */
849	fd_reify (EV_A);	2027	fd_reify (EV_A);
850		2028
851	/* calculate blocking time */	2029	/* calculate blocking time */
		2030	{
		2031	ev_tstamp waittime = 0.;
		2032	ev_tstamp sleeptime = 0.;
852		2033
853	/* we only need this for !monotonic clockor timers, but as we basically	2034	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
854	always have timers, we just calculate it always */
855	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);
858	else
859	#endif
860	{	2035	{
861	rt_now = ev_time ();	2036	/* update time to cancel out callback processing overhead */
862	mn_now = rt_now;	2037	time_update (EV_A_ 1e100);
863	}
864		2038
865	if (flags & EVLOOP_NONBLOCK || idlecnt)
866	block = 0.;
867	else
868	{
869	block = MAX_BLOCKTIME;
870
871	if (timercnt)	2039	if (timercnt)
872	{	2040	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	2041	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
874	if (block > to) block = to;	2042	if (waittime > to) waittime = to;
875	}	2043	}
876		2044
		2045	#if EV_PERIODIC_ENABLE
877	if (periodiccnt)	2046	if (periodiccnt)
878	{	2047	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	2048	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
880	if (block > to) block = to;	2049	if (waittime > to) waittime = to;
881	}	2050	}
		2051	#endif
882		2052
883	if (block < 0.) block = 0.;	2053	if (expect_false (waittime < timeout_blocktime))
		2054	waittime = timeout_blocktime;
		2055
		2056	sleeptime = waittime - backend_fudge;
		2057
		2058	if (expect_true (sleeptime > io_blocktime))
		2059	sleeptime = io_blocktime;
		2060
		2061	if (sleeptime)
		2062	{
		2063	ev_sleep (sleeptime);
		2064	waittime -= sleeptime;
		2065	}
884	}	2066	}
885		2067
886	method_poll (EV_A_ block);	2068	++loop_count;
		2069	backend_poll (EV_A_ waittime);
887		2070
888	/* update rt_now, do magic */	2071	/* update ev_rt_now, do magic */
889	time_update (EV_A);	2072	time_update (EV_A_ waittime + sleeptime);
		2073	}
890		2074
891	/* queue pending timers and reschedule them */	2075	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	2076	timers_reify (EV_A); /* relative timers called last */
		2077	#if EV_PERIODIC_ENABLE
893	periodics_reify (EV_A); /* absolute timers called first */	2078	periodics_reify (EV_A); /* absolute timers called first */
		2079	#endif
894		2080
		2081	#if EV_IDLE_ENABLE
895	/* queue idle watchers unless io or timers are pending */	2082	/* queue idle watchers unless other events are pending */
896	if (!pendingcnt)	2083	idle_reify (EV_A);
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	2084	#endif
898		2085
899	/* queue check watchers, to be executed first */	2086	/* queue check watchers, to be executed first */
900	if (checkcnt)	2087	if (expect_false (checkcnt))
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2088	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
902		2089
903	call_pending (EV_A);	2090	call_pending (EV_A);
904	}	2091	}
905	while (activecnt && !loop_done);	2092	while (expect_true (
		2093	activecnt
		2094	&& !loop_done
		2095	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2096	));
906		2097
907	if (loop_done != 2)	2098	if (loop_done == EVUNLOOP_ONE)
908	loop_done = 0;	2099	loop_done = EVUNLOOP_CANCEL;
909	}	2100	}
910		2101
911	void	2102	void
912	ev_unloop (EV_P_ int how)	2103	ev_unloop (EV_P_ int how)
913	{	2104	{
914	loop_done = how;	2105	loop_done = how;
915	}	2106	}
916		2107
		2108	void
		2109	ev_ref (EV_P)
		2110	{
		2111	++activecnt;
		2112	}
		2113
		2114	void
		2115	ev_unref (EV_P)
		2116	{
		2117	--activecnt;
		2118	}
		2119
		2120	void
		2121	ev_now_update (EV_P)
		2122	{
		2123	time_update (EV_A_ 1e100);
		2124	}
		2125
		2126	void
		2127	ev_suspend (EV_P)
		2128	{
		2129	ev_now_update (EV_A);
		2130	}
		2131
		2132	void
		2133	ev_resume (EV_P)
		2134	{
		2135	ev_tstamp mn_prev = mn_now;
		2136
		2137	ev_now_update (EV_A);
		2138	timers_reschedule (EV_A_ mn_now - mn_prev);
		2139	#if EV_PERIODIC_ENABLE
		2140	periodics_reschedule (EV_A);
		2141	#endif
		2142	}
		2143
917	/*****************************************************************************/	2144	/*****************************************************************************/
918		2145
919	inline void	2146	inline_size void
920	wlist_add (WL *head, WL elem)	2147	wlist_add (WL *head, WL elem)
921	{	2148	{
922	elem->next = *head;	2149	elem->next = *head;
923	*head = elem;	2150	*head = elem;
924	}	2151	}
925		2152
926	inline void	2153	inline_size void
927	wlist_del (WL *head, WL elem)	2154	wlist_del (WL *head, WL elem)
928	{	2155	{
929	while (*head)	2156	while (*head)
930	{	2157	{
931	if (*head == elem)	2158	if (*head == elem)
…		…
936		2163
937	head = &(*head)->next;	2164	head = &(*head)->next;
938	}	2165	}
939	}	2166	}
940		2167
941	inline void	2168	inline_speed void
942	ev_clear_pending (EV_P_ W w)	2169	clear_pending (EV_P_ W w)
943	{	2170	{
944	if (w->pending)	2171	if (w->pending)
945	{	2172	{
946	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2173	pendings [ABSPRI (w)][w->pending - 1].w = 0;
947	w->pending = 0;	2174	w->pending = 0;
948	}	2175	}
949	}	2176	}
950		2177
		2178	int
		2179	ev_clear_pending (EV_P_ void *w)
		2180	{
		2181	W w_ = (W)w;
		2182	int pending = w_->pending;
		2183
		2184	if (expect_true (pending))
		2185	{
		2186	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2187	w_->pending = 0;
		2188	p->w = 0;
		2189	return p->events;
		2190	}
		2191	else
		2192	return 0;
		2193	}
		2194
951	inline void	2195	inline_size void
		2196	pri_adjust (EV_P_ W w)
		2197	{
		2198	int pri = w->priority;
		2199	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		2200	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		2201	w->priority = pri;
		2202	}
		2203
		2204	inline_speed void
952	ev_start (EV_P_ W w, int active)	2205	ev_start (EV_P_ W w, int active)
953	{	2206	{
954	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	2207	pri_adjust (EV_A_ w);
955	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
956
957	w->active = active;	2208	w->active = active;
958	ev_ref (EV_A);	2209	ev_ref (EV_A);
959	}	2210	}
960		2211
961	inline void	2212	inline_size void
962	ev_stop (EV_P_ W w)	2213	ev_stop (EV_P_ W w)
963	{	2214	{
964	ev_unref (EV_A);	2215	ev_unref (EV_A);
965	w->active = 0;	2216	w->active = 0;
966	}	2217	}
967		2218
968	/*****************************************************************************/	2219	/*****************************************************************************/
969		2220
970	void	2221	void noinline
971	ev_io_start (EV_P_ struct ev_io *w)	2222	ev_io_start (EV_P_ ev_io *w)
972	{	2223	{
973	int fd = w->fd;	2224	int fd = w->fd;
974		2225
975	if (ev_is_active (w))	2226	if (expect_false (ev_is_active (w)))
976	return;	2227	return;
977		2228
978	assert (("ev_io_start called with negative fd", fd >= 0));	2229	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2230	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2231
		2232	EV_FREQUENT_CHECK;
979		2233
980	ev_start (EV_A_ (W)w, 1);	2234	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	2235	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2236	wlist_add (&anfds[fd].head, (WL)w);
983		2237
984	fd_change (EV_A_ fd);	2238	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
985	}	2239	w->events &= ~EV__IOFDSET;
986		2240
987	void	2241	EV_FREQUENT_CHECK;
		2242	}
		2243
		2244	void noinline
988	ev_io_stop (EV_P_ struct ev_io *w)	2245	ev_io_stop (EV_P_ ev_io *w)
989	{	2246	{
990	ev_clear_pending (EV_A_ (W)w);	2247	clear_pending (EV_A_ (W)w);
991	if (!ev_is_active (w))	2248	if (expect_false (!ev_is_active (w)))
992	return;	2249	return;
993		2250
		2251	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2252
		2253	EV_FREQUENT_CHECK;
		2254
994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2255	wlist_del (&anfds[w->fd].head, (WL)w);
995	ev_stop (EV_A_ (W)w);	2256	ev_stop (EV_A_ (W)w);
996		2257
997	fd_change (EV_A_ w->fd);	2258	fd_change (EV_A_ w->fd, 1);
998	}
999		2259
1000	void	2260	EV_FREQUENT_CHECK;
		2261	}
		2262
		2263	void noinline
1001	ev_timer_start (EV_P_ struct ev_timer *w)	2264	ev_timer_start (EV_P_ ev_timer *w)
1002	{	2265	{
1003	if (ev_is_active (w))	2266	if (expect_false (ev_is_active (w)))
1004	return;	2267	return;
1005		2268
1006	w->at += mn_now;	2269	ev_at (w) += mn_now;
1007		2270
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2271	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		2272
		2273	EV_FREQUENT_CHECK;
		2274
		2275	++timercnt;
1010	ev_start (EV_A_ (W)w, ++timercnt);	2276	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
1011	array_needsize (timers, timermax, timercnt, );	2277	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
1012	timers [timercnt - 1] = w;	2278	ANHE_w (timers [ev_active (w)]) = (WT)w;
1013	upheap ((WT *)timers, timercnt - 1);	2279	ANHE_at_cache (timers [ev_active (w)]);
1014	}	2280	upheap (timers, ev_active (w));
1015		2281
1016	void	2282	EV_FREQUENT_CHECK;
		2283
		2284	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
		2285	}
		2286
		2287	void noinline
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	2288	ev_timer_stop (EV_P_ ev_timer *w)
1018	{	2289	{
1019	ev_clear_pending (EV_A_ (W)w);	2290	clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	2291	if (expect_false (!ev_is_active (w)))
1021	return;	2292	return;
1022		2293
1023	if (w->active < timercnt--)	2294	EV_FREQUENT_CHECK;
		2295
		2296	{
		2297	int active = ev_active (w);
		2298
		2299	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2300
		2301	--timercnt;
		2302
		2303	if (expect_true (active < timercnt + HEAP0))
1024	{	2304	{
1025	timers [w->active - 1] = timers [timercnt];	2305	timers [active] = timers [timercnt + HEAP0];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	2306	adjustheap (timers, timercnt, active);
1027	}	2307	}
		2308	}
1028		2309
1029	w->at = w->repeat;	2310	EV_FREQUENT_CHECK;
		2311
		2312	ev_at (w) -= mn_now;
1030		2313
1031	ev_stop (EV_A_ (W)w);	2314	ev_stop (EV_A_ (W)w);
1032	}	2315	}
1033		2316
1034	void	2317	void noinline
1035	ev_timer_again (EV_P_ struct ev_timer *w)	2318	ev_timer_again (EV_P_ ev_timer *w)
1036	{	2319	{
		2320	EV_FREQUENT_CHECK;
		2321
1037	if (ev_is_active (w))	2322	if (ev_is_active (w))
1038	{	2323	{
1039	if (w->repeat)	2324	if (w->repeat)
1040	{	2325	{
1041	w->at = mn_now + w->repeat;	2326	ev_at (w) = mn_now + w->repeat;
		2327	ANHE_at_cache (timers [ev_active (w)]);
1042	downheap ((WT *)timers, timercnt, w->active - 1);	2328	adjustheap (timers, timercnt, ev_active (w));
1043	}	2329	}
1044	else	2330	else
1045	ev_timer_stop (EV_A_ w);	2331	ev_timer_stop (EV_A_ w);
1046	}	2332	}
1047	else if (w->repeat)	2333	else if (w->repeat)
		2334	{
		2335	ev_at (w) = w->repeat;
1048	ev_timer_start (EV_A_ w);	2336	ev_timer_start (EV_A_ w);
1049	}	2337	}
1050		2338
1051	void	2339	EV_FREQUENT_CHECK;
		2340	}
		2341
		2342	#if EV_PERIODIC_ENABLE
		2343	void noinline
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	2344	ev_periodic_start (EV_P_ ev_periodic *w)
1053	{	2345	{
1054	if (ev_is_active (w))	2346	if (expect_false (ev_is_active (w)))
1055	return;	2347	return;
1056		2348
		2349	if (w->reschedule_cb)
		2350	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2351	else if (w->interval)
		2352	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2353	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059	/* this formula differs from the one in periodic_reify because we do not always round up */	2354	/* this formula differs from the one in periodic_reify because we do not always round up */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	2355	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2356	}
		2357	else
		2358	ev_at (w) = w->offset;
1062		2359
		2360	EV_FREQUENT_CHECK;
		2361
		2362	++periodiccnt;
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	2363	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	2364	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1065	periodics [periodiccnt - 1] = w;	2365	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	2366	ANHE_at_cache (periodics [ev_active (w)]);
1067	}	2367	upheap (periodics, ev_active (w));
1068		2368
1069	void	2369	EV_FREQUENT_CHECK;
		2370
		2371	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
		2372	}
		2373
		2374	void noinline
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	2375	ev_periodic_stop (EV_P_ ev_periodic *w)
1071	{	2376	{
1072	ev_clear_pending (EV_A_ (W)w);	2377	clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	2378	if (expect_false (!ev_is_active (w)))
1074	return;	2379	return;
1075		2380
1076	if (w->active < periodiccnt--)	2381	EV_FREQUENT_CHECK;
		2382
		2383	{
		2384	int active = ev_active (w);
		2385
		2386	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2387
		2388	--periodiccnt;
		2389
		2390	if (expect_true (active < periodiccnt + HEAP0))
1077	{	2391	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	2392	periodics [active] = periodics [periodiccnt + HEAP0];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	2393	adjustheap (periodics, periodiccnt, active);
1080	}	2394	}
		2395	}
		2396
		2397	EV_FREQUENT_CHECK;
1081		2398
1082	ev_stop (EV_A_ (W)w);	2399	ev_stop (EV_A_ (W)w);
1083	}	2400	}
		2401
		2402	void noinline
		2403	ev_periodic_again (EV_P_ ev_periodic *w)
		2404	{
		2405	/* TODO: use adjustheap and recalculation */
		2406	ev_periodic_stop (EV_A_ w);
		2407	ev_periodic_start (EV_A_ w);
		2408	}
		2409	#endif
1084		2410
1085	#ifndef SA_RESTART	2411	#ifndef SA_RESTART
1086	# define SA_RESTART 0	2412	# define SA_RESTART 0
1087	#endif	2413	#endif
1088		2414
1089	void	2415	void noinline
1090	ev_signal_start (EV_P_ struct ev_signal *w)	2416	ev_signal_start (EV_P_ ev_signal *w)
1091	{	2417	{
		2418	#if EV_MULTIPLICITY
		2419	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2420	#endif
1092	if (ev_is_active (w))	2421	if (expect_false (ev_is_active (w)))
1093	return;	2422	return;
1094		2423
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2424	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
		2425
		2426	evpipe_init (EV_A);
		2427
		2428	EV_FREQUENT_CHECK;
		2429
		2430	{
		2431	#ifndef _WIN32
		2432	sigset_t full, prev;
		2433	sigfillset (&full);
		2434	sigprocmask (SIG_SETMASK, &full, &prev);
		2435	#endif
		2436
		2437	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
		2438
		2439	#ifndef _WIN32
		2440	sigprocmask (SIG_SETMASK, &prev, 0);
		2441	#endif
		2442	}
1096		2443
1097	ev_start (EV_A_ (W)w, 1);	2444	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2445	wlist_add (&signals [w->signum - 1].head, (WL)w);
1100		2446
1101	if (!w->next)	2447	if (!((WL)w)->next)
1102	{	2448	{
		2449	#if _WIN32
		2450	signal (w->signum, ev_sighandler);
		2451	#else
1103	struct sigaction sa;	2452	struct sigaction sa;
1104	sa.sa_handler = sighandler;	2453	sa.sa_handler = ev_sighandler;
1105	sigfillset (&sa.sa_mask);	2454	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2455	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	2456	sigaction (w->signum, &sa, 0);
		2457	#endif
1108	}	2458	}
1109	}
1110		2459
1111	void	2460	EV_FREQUENT_CHECK;
		2461	}
		2462
		2463	void noinline
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	2464	ev_signal_stop (EV_P_ ev_signal *w)
1113	{	2465	{
1114	ev_clear_pending (EV_A_ (W)w);	2466	clear_pending (EV_A_ (W)w);
1115	if (!ev_is_active (w))	2467	if (expect_false (!ev_is_active (w)))
1116	return;	2468	return;
1117		2469
		2470	EV_FREQUENT_CHECK;
		2471
1118	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2472	wlist_del (&signals [w->signum - 1].head, (WL)w);
1119	ev_stop (EV_A_ (W)w);	2473	ev_stop (EV_A_ (W)w);
1120		2474
1121	if (!signals [w->signum - 1].head)	2475	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	2476	signal (w->signum, SIG_DFL);
1123	}
1124		2477
		2478	EV_FREQUENT_CHECK;
		2479	}
		2480
1125	void	2481	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)	2482	ev_child_start (EV_P_ ev_child *w)
1127	{	2483	{
		2484	#if EV_MULTIPLICITY
		2485	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2486	#endif
1128	if (ev_is_active (w))	2487	if (expect_false (ev_is_active (w)))
1129	return;	2488	return;
1130		2489
		2490	EV_FREQUENT_CHECK;
		2491
1131	ev_start (EV_A_ (W)w, ++idlecnt);	2492	ev_start (EV_A_ (W)w, 1);
1132	array_needsize (idles, idlemax, idlecnt, );	2493	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1133	idles [idlecnt - 1] = w;
1134	}
1135		2494
		2495	EV_FREQUENT_CHECK;
		2496	}
		2497
1136	void	2498	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)	2499	ev_child_stop (EV_P_ ev_child *w)
1138	{	2500	{
1139	ev_clear_pending (EV_A_ (W)w);	2501	clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))	2502	if (expect_false (!ev_is_active (w)))
1141	return;	2503	return;
1142		2504
1143	idles [w->active - 1] = idles [--idlecnt];	2505	EV_FREQUENT_CHECK;
		2506
		2507	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1144	ev_stop (EV_A_ (W)w);	2508	ev_stop (EV_A_ (W)w);
1145	}
1146		2509
1147	void	2510	EV_FREQUENT_CHECK;
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)	2511	}
		2512
		2513	#if EV_STAT_ENABLE
		2514
		2515	# ifdef _WIN32
		2516	# undef lstat
		2517	# define lstat(a,b) _stati64 (a,b)
		2518	# endif
		2519
		2520	#define DEF_STAT_INTERVAL 5.0074891
		2521	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
		2522	#define MIN_STAT_INTERVAL 0.1074891
		2523
		2524	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2525
		2526	#if EV_USE_INOTIFY
		2527	# define EV_INOTIFY_BUFSIZE 8192
		2528
		2529	static void noinline
		2530	infy_add (EV_P_ ev_stat *w)
1149	{	2531	{
1150	if (ev_is_active (w))	2532	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);
		2533
		2534	if (w->wd < 0)
		2535	{
		2536	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2537	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2538
		2539	/* monitor some parent directory for speedup hints */
		2540	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2541	/* but an efficiency issue only */
		2542	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2543	{
		2544	char path [4096];
		2545	strcpy (path, w->path);
		2546
		2547	do
		2548	{
		2549	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2550	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2551
		2552	char *pend = strrchr (path, '/');
		2553
		2554	if (!pend || pend == path)
		2555	break;
		2556
		2557	*pend = 0;
		2558	w->wd = inotify_add_watch (fs_fd, path, mask);
		2559	}
		2560	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2561	}
		2562	}
		2563
		2564	if (w->wd >= 0)
		2565	{
		2566	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2567
		2568	/* now local changes will be tracked by inotify, but remote changes won't */
		2569	/* unless the filesystem it known to be local, we therefore still poll */
		2570	/* also do poll on <2.6.25, but with normal frequency */
		2571	struct statfs sfs;
		2572
		2573	if (fs_2625 && !statfs (w->path, &sfs))
		2574	if (sfs.f_type == 0x1373 /* devfs */
		2575	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2576	|| sfs.f_type == 0x3153464a /* jfs */
		2577	|| sfs.f_type == 0x52654973 /* reiser3 */
		2578	|| sfs.f_type == 0x01021994 /* tempfs */
		2579	|| sfs.f_type == 0x58465342 /* xfs */)
		2580	return;
		2581
		2582	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2583	ev_timer_again (EV_A_ &w->timer);
		2584	}
		2585	}
		2586
		2587	static void noinline
		2588	infy_del (EV_P_ ev_stat *w)
		2589	{
		2590	int slot;
		2591	int wd = w->wd;
		2592
		2593	if (wd < 0)
1151	return;	2594	return;
1152		2595
		2596	w->wd = -2;
		2597	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2598	wlist_del (&fs_hash [slot].head, (WL)w);
		2599
		2600	/* remove this watcher, if others are watching it, they will rearm */
		2601	inotify_rm_watch (fs_fd, wd);
		2602	}
		2603
		2604	static void noinline
		2605	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2606	{
		2607	if (slot < 0)
		2608	/* overflow, need to check for all hash slots */
		2609	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2610	infy_wd (EV_A_ slot, wd, ev);
		2611	else
		2612	{
		2613	WL w_;
		2614
		2615	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2616	{
		2617	ev_stat *w = (ev_stat *)w_;
		2618	w_ = w_->next; /* lets us remove this watcher and all before it */
		2619
		2620	if (w->wd == wd || wd == -1)
		2621	{
		2622	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2623	{
		2624	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2625	w->wd = -1;
		2626	infy_add (EV_A_ w); /* re-add, no matter what */
		2627	}
		2628
		2629	stat_timer_cb (EV_A_ &w->timer, 0);
		2630	}
		2631	}
		2632	}
		2633	}
		2634
		2635	static void
		2636	infy_cb (EV_P_ ev_io *w, int revents)
		2637	{
		2638	char buf [EV_INOTIFY_BUFSIZE];
		2639	struct inotify_event *ev = (struct inotify_event *)buf;
		2640	int ofs;
		2641	int len = read (fs_fd, buf, sizeof (buf));
		2642
		2643	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2644	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2645	}
		2646
		2647	inline_size void
		2648	check_2625 (EV_P)
		2649	{
		2650	/* kernels < 2.6.25 are borked
		2651	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2652	*/
		2653	struct utsname buf;
		2654	int major, minor, micro;
		2655
		2656	if (uname (&buf))
		2657	return;
		2658
		2659	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2660	return;
		2661
		2662	if (major < 2
		2663	|| (major == 2 && minor < 6)
		2664	|| (major == 2 && minor == 6 && micro < 25))
		2665	return;
		2666
		2667	fs_2625 = 1;
		2668	}
		2669
		2670	inline_size void
		2671	infy_init (EV_P)
		2672	{
		2673	if (fs_fd != -2)
		2674	return;
		2675
		2676	fs_fd = -1;
		2677
		2678	check_2625 (EV_A);
		2679
		2680	fs_fd = inotify_init ();
		2681
		2682	if (fs_fd >= 0)
		2683	{
		2684	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2685	ev_set_priority (&fs_w, EV_MAXPRI);
		2686	ev_io_start (EV_A_ &fs_w);
		2687	}
		2688	}
		2689
		2690	inline_size void
		2691	infy_fork (EV_P)
		2692	{
		2693	int slot;
		2694
		2695	if (fs_fd < 0)
		2696	return;
		2697
		2698	close (fs_fd);
		2699	fs_fd = inotify_init ();
		2700
		2701	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2702	{
		2703	WL w_ = fs_hash [slot].head;
		2704	fs_hash [slot].head = 0;
		2705
		2706	while (w_)
		2707	{
		2708	ev_stat *w = (ev_stat *)w_;
		2709	w_ = w_->next; /* lets us add this watcher */
		2710
		2711	w->wd = -1;
		2712
		2713	if (fs_fd >= 0)
		2714	infy_add (EV_A_ w); /* re-add, no matter what */
		2715	else
		2716	ev_timer_again (EV_A_ &w->timer);
		2717	}
		2718	}
		2719	}
		2720
		2721	#endif
		2722
		2723	#ifdef _WIN32
		2724	# define EV_LSTAT(p,b) _stati64 (p, b)
		2725	#else
		2726	# define EV_LSTAT(p,b) lstat (p, b)
		2727	#endif
		2728
		2729	void
		2730	ev_stat_stat (EV_P_ ev_stat *w)
		2731	{
		2732	if (lstat (w->path, &w->attr) < 0)
		2733	w->attr.st_nlink = 0;
		2734	else if (!w->attr.st_nlink)
		2735	w->attr.st_nlink = 1;
		2736	}
		2737
		2738	static void noinline
		2739	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2740	{
		2741	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2742
		2743	/* we copy this here each the time so that */
		2744	/* prev has the old value when the callback gets invoked */
		2745	w->prev = w->attr;
		2746	ev_stat_stat (EV_A_ w);
		2747
		2748	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2749	if (
		2750	w->prev.st_dev != w->attr.st_dev
		2751	|| w->prev.st_ino != w->attr.st_ino
		2752	|| w->prev.st_mode != w->attr.st_mode
		2753	|| w->prev.st_nlink != w->attr.st_nlink
		2754	|| w->prev.st_uid != w->attr.st_uid
		2755	|| w->prev.st_gid != w->attr.st_gid
		2756	|| w->prev.st_rdev != w->attr.st_rdev
		2757	|| w->prev.st_size != w->attr.st_size
		2758	|| w->prev.st_atime != w->attr.st_atime
		2759	|| w->prev.st_mtime != w->attr.st_mtime
		2760	|| w->prev.st_ctime != w->attr.st_ctime
		2761	) {
		2762	#if EV_USE_INOTIFY
		2763	if (fs_fd >= 0)
		2764	{
		2765	infy_del (EV_A_ w);
		2766	infy_add (EV_A_ w);
		2767	ev_stat_stat (EV_A_ w); /* avoid race... */
		2768	}
		2769	#endif
		2770
		2771	ev_feed_event (EV_A_ w, EV_STAT);
		2772	}
		2773	}
		2774
		2775	void
		2776	ev_stat_start (EV_P_ ev_stat *w)
		2777	{
		2778	if (expect_false (ev_is_active (w)))
		2779	return;
		2780
		2781	ev_stat_stat (EV_A_ w);
		2782
		2783	if (w->interval < MIN_STAT_INTERVAL && w->interval)
		2784	w->interval = MIN_STAT_INTERVAL;
		2785
		2786	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
		2787	ev_set_priority (&w->timer, ev_priority (w));
		2788
		2789	#if EV_USE_INOTIFY
		2790	infy_init (EV_A);
		2791
		2792	if (fs_fd >= 0)
		2793	infy_add (EV_A_ w);
		2794	else
		2795	#endif
		2796	ev_timer_again (EV_A_ &w->timer);
		2797
		2798	ev_start (EV_A_ (W)w, 1);
		2799
		2800	EV_FREQUENT_CHECK;
		2801	}
		2802
		2803	void
		2804	ev_stat_stop (EV_P_ ev_stat *w)
		2805	{
		2806	clear_pending (EV_A_ (W)w);
		2807	if (expect_false (!ev_is_active (w)))
		2808	return;
		2809
		2810	EV_FREQUENT_CHECK;
		2811
		2812	#if EV_USE_INOTIFY
		2813	infy_del (EV_A_ w);
		2814	#endif
		2815	ev_timer_stop (EV_A_ &w->timer);
		2816
		2817	ev_stop (EV_A_ (W)w);
		2818
		2819	EV_FREQUENT_CHECK;
		2820	}
		2821	#endif
		2822
		2823	#if EV_IDLE_ENABLE
		2824	void
		2825	ev_idle_start (EV_P_ ev_idle *w)
		2826	{
		2827	if (expect_false (ev_is_active (w)))
		2828	return;
		2829
		2830	pri_adjust (EV_A_ (W)w);
		2831
		2832	EV_FREQUENT_CHECK;
		2833
		2834	{
		2835	int active = ++idlecnt [ABSPRI (w)];
		2836
		2837	++idleall;
		2838	ev_start (EV_A_ (W)w, active);
		2839
		2840	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2841	idles [ABSPRI (w)][active - 1] = w;
		2842	}
		2843
		2844	EV_FREQUENT_CHECK;
		2845	}
		2846
		2847	void
		2848	ev_idle_stop (EV_P_ ev_idle *w)
		2849	{
		2850	clear_pending (EV_A_ (W)w);
		2851	if (expect_false (!ev_is_active (w)))
		2852	return;
		2853
		2854	EV_FREQUENT_CHECK;
		2855
		2856	{
		2857	int active = ev_active (w);
		2858
		2859	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2860	ev_active (idles [ABSPRI (w)][active - 1]) = active;
		2861
		2862	ev_stop (EV_A_ (W)w);
		2863	--idleall;
		2864	}
		2865
		2866	EV_FREQUENT_CHECK;
		2867	}
		2868	#endif
		2869
		2870	void
		2871	ev_prepare_start (EV_P_ ev_prepare *w)
		2872	{
		2873	if (expect_false (ev_is_active (w)))
		2874	return;
		2875
		2876	EV_FREQUENT_CHECK;
		2877
1153	ev_start (EV_A_ (W)w, ++preparecnt);	2878	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );	2879	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1155	prepares [preparecnt - 1] = w;	2880	prepares [preparecnt - 1] = w;
1156	}
1157		2881
		2882	EV_FREQUENT_CHECK;
		2883	}
		2884
1158	void	2885	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2886	ev_prepare_stop (EV_P_ ev_prepare *w)
1160	{	2887	{
1161	ev_clear_pending (EV_A_ (W)w);	2888	clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))	2889	if (expect_false (!ev_is_active (w)))
1163	return;	2890	return;
1164		2891
		2892	EV_FREQUENT_CHECK;
		2893
		2894	{
		2895	int active = ev_active (w);
		2896
1165	prepares [w->active - 1] = prepares [--preparecnt];	2897	prepares [active - 1] = prepares [--preparecnt];
		2898	ev_active (prepares [active - 1]) = active;
		2899	}
		2900
1166	ev_stop (EV_A_ (W)w);	2901	ev_stop (EV_A_ (W)w);
1167	}
1168		2902
		2903	EV_FREQUENT_CHECK;
		2904	}
		2905
1169	void	2906	void
1170	ev_check_start (EV_P_ struct ev_check *w)	2907	ev_check_start (EV_P_ ev_check *w)
1171	{	2908	{
1172	if (ev_is_active (w))	2909	if (expect_false (ev_is_active (w)))
1173	return;	2910	return;
1174		2911
		2912	EV_FREQUENT_CHECK;
		2913
1175	ev_start (EV_A_ (W)w, ++checkcnt);	2914	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );	2915	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1177	checks [checkcnt - 1] = w;	2916	checks [checkcnt - 1] = w;
1178	}
1179		2917
		2918	EV_FREQUENT_CHECK;
		2919	}
		2920
1180	void	2921	void
1181	ev_check_stop (EV_P_ struct ev_check *w)	2922	ev_check_stop (EV_P_ ev_check *w)
1182	{	2923	{
1183	ev_clear_pending (EV_A_ (W)w);	2924	clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))	2925	if (expect_false (!ev_is_active (w)))
1185	return;	2926	return;
1186		2927
		2928	EV_FREQUENT_CHECK;
		2929
		2930	{
		2931	int active = ev_active (w);
		2932
1187	checks [w->active - 1] = checks [--checkcnt];	2933	checks [active - 1] = checks [--checkcnt];
		2934	ev_active (checks [active - 1]) = active;
		2935	}
		2936
1188	ev_stop (EV_A_ (W)w);	2937	ev_stop (EV_A_ (W)w);
1189	}
1190		2938
1191	void	2939	EV_FREQUENT_CHECK;
1192	ev_child_start (EV_P_ struct ev_child *w)	2940	}
		2941
		2942	#if EV_EMBED_ENABLE
		2943	void noinline
		2944	ev_embed_sweep (EV_P_ ev_embed *w)
1193	{	2945	{
		2946	ev_loop (w->other, EVLOOP_NONBLOCK);
		2947	}
		2948
		2949	static void
		2950	embed_io_cb (EV_P_ ev_io *io, int revents)
		2951	{
		2952	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2953
1194	if (ev_is_active (w))	2954	if (ev_cb (w))
		2955	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2956	else
		2957	ev_loop (w->other, EVLOOP_NONBLOCK);
		2958	}
		2959
		2960	static void
		2961	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2962	{
		2963	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2964
		2965	{
		2966	struct ev_loop *loop = w->other;
		2967
		2968	while (fdchangecnt)
		2969	{
		2970	fd_reify (EV_A);
		2971	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2972	}
		2973	}
		2974	}
		2975
		2976	static void
		2977	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2978	{
		2979	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2980
		2981	ev_embed_stop (EV_A_ w);
		2982
		2983	{
		2984	struct ev_loop *loop = w->other;
		2985
		2986	ev_loop_fork (EV_A);
		2987	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2988	}
		2989
		2990	ev_embed_start (EV_A_ w);
		2991	}
		2992
		2993	#if 0
		2994	static void
		2995	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2996	{
		2997	ev_idle_stop (EV_A_ idle);
		2998	}
		2999	#endif
		3000
		3001	void
		3002	ev_embed_start (EV_P_ ev_embed *w)
		3003	{
		3004	if (expect_false (ev_is_active (w)))
1195	return;	3005	return;
1196		3006
		3007	{
		3008	struct ev_loop *loop = w->other;
		3009	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		3010	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		3011	}
		3012
		3013	EV_FREQUENT_CHECK;
		3014
		3015	ev_set_priority (&w->io, ev_priority (w));
		3016	ev_io_start (EV_A_ &w->io);
		3017
		3018	ev_prepare_init (&w->prepare, embed_prepare_cb);
		3019	ev_set_priority (&w->prepare, EV_MINPRI);
		3020	ev_prepare_start (EV_A_ &w->prepare);
		3021
		3022	ev_fork_init (&w->fork, embed_fork_cb);
		3023	ev_fork_start (EV_A_ &w->fork);
		3024
		3025	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3026
1197	ev_start (EV_A_ (W)w, 1);	3027	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1199	}
1200		3028
		3029	EV_FREQUENT_CHECK;
		3030	}
		3031
1201	void	3032	void
1202	ev_child_stop (EV_P_ struct ev_child *w)	3033	ev_embed_stop (EV_P_ ev_embed *w)
1203	{	3034	{
1204	ev_clear_pending (EV_A_ (W)w);	3035	clear_pending (EV_A_ (W)w);
1205	if (ev_is_active (w))	3036	if (expect_false (!ev_is_active (w)))
1206	return;	3037	return;
1207		3038
1208	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	3039	EV_FREQUENT_CHECK;
		3040
		3041	ev_io_stop (EV_A_ &w->io);
		3042	ev_prepare_stop (EV_A_ &w->prepare);
		3043	ev_fork_stop (EV_A_ &w->fork);
		3044
		3045	EV_FREQUENT_CHECK;
		3046	}
		3047	#endif
		3048
		3049	#if EV_FORK_ENABLE
		3050	void
		3051	ev_fork_start (EV_P_ ev_fork *w)
		3052	{
		3053	if (expect_false (ev_is_active (w)))
		3054	return;
		3055
		3056	EV_FREQUENT_CHECK;
		3057
		3058	ev_start (EV_A_ (W)w, ++forkcnt);
		3059	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		3060	forks [forkcnt - 1] = w;
		3061
		3062	EV_FREQUENT_CHECK;
		3063	}
		3064
		3065	void
		3066	ev_fork_stop (EV_P_ ev_fork *w)
		3067	{
		3068	clear_pending (EV_A_ (W)w);
		3069	if (expect_false (!ev_is_active (w)))
		3070	return;
		3071
		3072	EV_FREQUENT_CHECK;
		3073
		3074	{
		3075	int active = ev_active (w);
		3076
		3077	forks [active - 1] = forks [--forkcnt];
		3078	ev_active (forks [active - 1]) = active;
		3079	}
		3080
1209	ev_stop (EV_A_ (W)w);	3081	ev_stop (EV_A_ (W)w);
		3082
		3083	EV_FREQUENT_CHECK;
1210	}	3084	}
		3085	#endif
		3086
		3087	#if EV_ASYNC_ENABLE
		3088	void
		3089	ev_async_start (EV_P_ ev_async *w)
		3090	{
		3091	if (expect_false (ev_is_active (w)))
		3092	return;
		3093
		3094	evpipe_init (EV_A);
		3095
		3096	EV_FREQUENT_CHECK;
		3097
		3098	ev_start (EV_A_ (W)w, ++asynccnt);
		3099	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3100	asyncs [asynccnt - 1] = w;
		3101
		3102	EV_FREQUENT_CHECK;
		3103	}
		3104
		3105	void
		3106	ev_async_stop (EV_P_ ev_async *w)
		3107	{
		3108	clear_pending (EV_A_ (W)w);
		3109	if (expect_false (!ev_is_active (w)))
		3110	return;
		3111
		3112	EV_FREQUENT_CHECK;
		3113
		3114	{
		3115	int active = ev_active (w);
		3116
		3117	asyncs [active - 1] = asyncs [--asynccnt];
		3118	ev_active (asyncs [active - 1]) = active;
		3119	}
		3120
		3121	ev_stop (EV_A_ (W)w);
		3122
		3123	EV_FREQUENT_CHECK;
		3124	}
		3125
		3126	void
		3127	ev_async_send (EV_P_ ev_async *w)
		3128	{
		3129	w->sent = 1;
		3130	evpipe_write (EV_A_ &gotasync);
		3131	}
		3132	#endif
1211		3133
1212	/*****************************************************************************/	3134	/*****************************************************************************/
1213		3135
1214	struct ev_once	3136	struct ev_once
1215	{	3137	{
1216	struct ev_io io;	3138	ev_io io;
1217	struct ev_timer to;	3139	ev_timer to;
1218	void (*cb)(int revents, void *arg);	3140	void (*cb)(int revents, void *arg);
1219	void *arg;	3141	void *arg;
1220	};	3142	};
1221		3143
1222	static void	3144	static void
1223	once_cb (EV_P_ struct ev_once *once, int revents)	3145	once_cb (EV_P_ struct ev_once *once, int revents)
1224	{	3146	{
1225	void (*cb)(int revents, void *arg) = once->cb;	3147	void (*cb)(int revents, void *arg) = once->cb;
1226	void *arg = once->arg;	3148	void *arg = once->arg;
1227		3149
1228	ev_io_stop (EV_A_ &once->io);	3150	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	3151	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	3152	ev_free (once);
1231		3153
1232	cb (revents, arg);	3154	cb (revents, arg);
1233	}	3155	}
1234		3156
1235	static void	3157	static void
1236	once_cb_io (EV_P_ struct ev_io *w, int revents)	3158	once_cb_io (EV_P_ ev_io *w, int revents)
1237	{	3159	{
1238	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3160	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3161
		3162	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1239	}	3163	}
1240		3164
1241	static void	3165	static void
1242	once_cb_to (EV_P_ struct ev_timer *w, int revents)	3166	once_cb_to (EV_P_ ev_timer *w, int revents)
1243	{	3167	{
1244	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3168	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3169
		3170	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1245	}	3171	}
1246		3172
1247	void	3173	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3174	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1249	{	3175	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	3176	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1251		3177
1252	if (!once)	3178	if (expect_false (!once))
		3179	{
1253	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3180	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1254	else	3181	return;
1255	{	3182	}
		3183
1256	once->cb = cb;	3184	once->cb = cb;
1257	once->arg = arg;	3185	once->arg = arg;
1258		3186
1259	ev_watcher_init (&once->io, once_cb_io);	3187	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	3188	if (fd >= 0)
		3189	{
		3190	ev_io_set (&once->io, fd, events);
		3191	ev_io_start (EV_A_ &once->io);
		3192	}
		3193
		3194	ev_init (&once->to, once_cb_to);
		3195	if (timeout >= 0.)
		3196	{
		3197	ev_timer_set (&once->to, timeout, 0.);
		3198	ev_timer_start (EV_A_ &once->to);
		3199	}
		3200	}
		3201
		3202	/*****************************************************************************/
		3203
		3204	#if 0
		3205	void
		3206	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3207	{
		3208	int i, j;
		3209	ev_watcher_list *wl, *wn;
		3210
		3211	if (types & (EV_IO | EV_EMBED))
		3212	for (i = 0; i < anfdmax; ++i)
		3213	for (wl = anfds [i].head; wl; )
1261	{	3214	{
1262	ev_io_set (&once->io, fd, events);	3215	wn = wl->next;
1263	ev_io_start (EV_A_ &once->io);	3216
		3217	#if EV_EMBED_ENABLE
		3218	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3219	{
		3220	if (types & EV_EMBED)
		3221	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3222	}
		3223	else
		3224	#endif
		3225	#if EV_USE_INOTIFY
		3226	if (ev_cb ((ev_io *)wl) == infy_cb)
		3227	;
		3228	else
		3229	#endif
		3230	if ((ev_io *)wl != &pipeev)
		3231	if (types & EV_IO)
		3232	cb (EV_A_ EV_IO, wl);
		3233
		3234	wl = wn;
1264	}	3235	}
1265		3236
1266	ev_watcher_init (&once->to, once_cb_to);	3237	if (types & (EV_TIMER | EV_STAT))
1267	if (timeout >= 0.)	3238	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3239	#if EV_STAT_ENABLE
		3240	/*TODO: timer is not always active*/
		3241	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
1268	{	3242	{
1269	ev_timer_set (&once->to, timeout, 0.);	3243	if (types & EV_STAT)
1270	ev_timer_start (EV_A_ &once->to);	3244	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
1271	}	3245	}
1272	}	3246	else
1273	}	3247	#endif
		3248	if (types & EV_TIMER)
		3249	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
1274		3250
1275	/*****************************************************************************/	3251	#if EV_PERIODIC_ENABLE
		3252	if (types & EV_PERIODIC)
		3253	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3254	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3255	#endif
1276		3256
1277	#if 0	3257	#if EV_IDLE_ENABLE
		3258	if (types & EV_IDLE)
		3259	for (j = NUMPRI; i--; )
		3260	for (i = idlecnt [j]; i--; )
		3261	cb (EV_A_ EV_IDLE, idles [j][i]);
		3262	#endif
1278		3263
1279	struct ev_io wio;	3264	#if EV_FORK_ENABLE
		3265	if (types & EV_FORK)
		3266	for (i = forkcnt; i--; )
		3267	if (ev_cb (forks [i]) != embed_fork_cb)
		3268	cb (EV_A_ EV_FORK, forks [i]);
		3269	#endif
1280		3270
1281	static void	3271	#if EV_ASYNC_ENABLE
1282	sin_cb (struct ev_io *w, int revents)	3272	if (types & EV_ASYNC)
1283	{	3273	for (i = asynccnt; i--; )
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	3274	cb (EV_A_ EV_ASYNC, asyncs [i]);
1285	}	3275	#endif
1286		3276
1287	static void	3277	if (types & EV_PREPARE)
1288	ocb (struct ev_timer *w, int revents)	3278	for (i = preparecnt; i--; )
1289	{	3279	#if EV_EMBED_ENABLE
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	3280	if (ev_cb (prepares [i]) != embed_prepare_cb)
1291	ev_timer_stop (w);	3281	#endif
1292	ev_timer_start (w);	3282	cb (EV_A_ EV_PREPARE, prepares [i]);
1293	}
1294		3283
1295	static void	3284	if (types & EV_CHECK)
1296	scb (struct ev_signal *w, int revents)	3285	for (i = checkcnt; i--; )
1297	{	3286	cb (EV_A_ EV_CHECK, checks [i]);
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302		3287
1303	static void	3288	if (types & EV_SIGNAL)
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)	3289	for (i = 0; i < signalmax; ++i)
1322	{	3290	for (wl = signals [i].head; wl; )
1323	struct ev_timer *w = t + i;	3291	{
1324	ev_watcher_init (w, ocb, i);	3292	wn = wl->next;
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);	3293	cb (EV_A_ EV_SIGNAL, wl);
1326	ev_timer_start (w);	3294	wl = wn;
1327	if (drand48 () < 0.5)	3295	}
1328	ev_timer_stop (w);
1329	}
1330	#endif
1331		3296
1332	struct ev_timer t1;	3297	if (types & EV_CHILD)
1333	ev_timer_init (&t1, ocb, 5, 10);	3298	for (i = EV_PID_HASHSIZE; i--; )
1334	ev_timer_start (&t1);	3299	for (wl = childs [i]; wl; )
1335		3300	{
1336	struct ev_signal sig;	3301	wn = wl->next;
1337	ev_signal_init (&sig, scb, SIGQUIT);	3302	cb (EV_A_ EV_CHILD, wl);
1338	ev_signal_start (&sig);	3303	wl = wn;
1339		3304	}
1340	struct ev_check cw;	3305	/* EV_STAT 0x00001000 /* stat data changed */
1341	ev_check_init (&cw, gcb);	3306	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}	3307	}
1352
1353	#endif	3308	#endif
1354		3309
		3310	#if EV_MULTIPLICITY
		3311	#include "ev_wrap.h"
		3312	#endif
1355		3313
		3314	#ifdef __cplusplus
		3315	}
		3316	#endif
1356		3317
1357

Diff Legend

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