ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC vs.
Revision 1.284 by root, Wed Apr 15 17:49:26 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;
		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
		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
117		415
118	/*****************************************************************************/	416	/*****************************************************************************/
119		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
120	typedef struct	483	typedef struct
121	{	484	{
122	struct ev_watcher_list *head;	485	WL head;
123	unsigned char events;	486	unsigned char events;
124	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
125	} ANFD;	496	} ANFD;
126		497
127	typedef struct	498	typedef struct
128	{	499	{
129	W w;	500	W w;
130	int events;	501	int events;
131	} ANPENDING;	502	} ANPENDING;
132		503
133	#ifdef EV_MULTIPLICITY	504	#if EV_USE_INOTIFY
134	struct ev_loop	505	/* hash table entry per inotify-id */
		506	typedef struct
135	{	507	{
136	# define VAR(name,decl) decl	508	WL head;
137	# include "ev_vars.h"	509	} ANFS;
138	};	510	#endif
		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 */
139	#else	522	#else
		523	typedef WT ANHE;
		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;
140	# define VAR(name,decl) static decl	548	#define VAR(name,decl) static decl;
141	# include "ev_vars.h"	549	#include "ev_vars.h"
142	#endif
143	#undef VAR	550	#undef VAR
		551
		552	static int ev_default_loop_ptr;
		553
		554	#endif
144		555
145	/*****************************************************************************/	556	/*****************************************************************************/
146		557
147	inline ev_tstamp	558	ev_tstamp
148	ev_time (void)	559	ev_time (void)
149	{	560	{
150	#if EV_USE_REALTIME	561	#if EV_USE_REALTIME
		562	if (expect_true (have_realtime))
		563	{
151	struct timespec ts;	564	struct timespec ts;
152	clock_gettime (CLOCK_REALTIME, &ts);	565	clock_gettime (CLOCK_REALTIME, &ts);
153	return ts.tv_sec + ts.tv_nsec * 1e-9;	566	return ts.tv_sec + ts.tv_nsec * 1e-9;
154	#else	567	}
		568	#endif
		569
155	struct timeval tv;	570	struct timeval tv;
156	gettimeofday (&tv, 0);	571	gettimeofday (&tv, 0);
157	return tv.tv_sec + tv.tv_usec * 1e-6;	572	return tv.tv_sec + tv.tv_usec * 1e-6;
158	#endif
159	}	573	}
160		574
161	inline ev_tstamp	575	inline_size ev_tstamp
162	get_clock (void)	576	get_clock (void)
163	{	577	{
164	#if EV_USE_MONOTONIC	578	#if EV_USE_MONOTONIC
165	if (expect_true (have_monotonic))	579	if (expect_true (have_monotonic))
166	{	580	{
…		…
171	#endif	585	#endif
172		586
173	return ev_time ();	587	return ev_time ();
174	}	588	}
175		589
		590	#if EV_MULTIPLICITY
176	ev_tstamp	591	ev_tstamp
177	ev_now (EV_P)	592	ev_now (EV_P)
178	{	593	{
179	return rt_now;	594	return ev_rt_now;
180	}	595	}
		596	#endif
181		597
182	#define array_roundsize(base,n) ((n) | 4 & ~3)	598	void
183		599	ev_sleep (ev_tstamp delay)
184	#define array_needsize(base,cur,cnt,init) \	600	{
185	if (expect_false ((cnt) > cur)) \	601	if (delay > 0.)
186	{ \
187	int newcnt = cur; \
188	do \
189	{ \
190	newcnt = array_roundsize (base, newcnt << 1); \
191	} \
192	while ((cnt) > newcnt); \
193	\
194	base = realloc (base, sizeof (*base) * (newcnt)); \
195	init (base + cur, newcnt - cur); \
196	cur = newcnt; \
197	}	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	}
198		625
199	/*****************************************************************************/	626	/*****************************************************************************/
200		627
201	static void	628	#define MALLOC_ROUND 4096 /* prefer to allocate in chunks of this size, must be 2**n and >> 4 longs */
202	anfds_init (ANFD *base, int count)
203	{
204	while (count--)
205	{
206	base->head = 0;
207	base->events = EV_NONE;
208	base->reify = 0;
209		629
210	++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)
211	}	641	{
212	}	642	ncur *= elem;
213		643	ncur = (ncur + elem + (MALLOC_ROUND - 1) + sizeof (void *) * 4) & ~(MALLOC_ROUND - 1);
214	static void	644	ncur = ncur - sizeof (void *) * 4;
215	event (EV_P_ W w, int events)	645	ncur /= elem;
216	{
217	if (w->pending)
218	{	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_;
219	pendings [ABSPRI (w)][w->pending - 1].events |= events;	698	pendings [pri][w_->pending - 1].events = revents;
220	return;
221	}	699	}
222
223	w->pending = ++pendingcnt [ABSPRI (w)];
224	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
225	pendings [ABSPRI (w)][w->pending - 1].w = w;
226	pendings [ABSPRI (w)][w->pending - 1].events = events;
227	}	700	}
228		701
229	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
230	queue_events (EV_P_ W *events, int eventcnt, int type)	718	queue_events (EV_P_ W *events, int eventcnt, int type)
231	{	719	{
232	int i;	720	int i;
233		721
234	for (i = 0; i < eventcnt; ++i)	722	for (i = 0; i < eventcnt; ++i)
235	event (EV_A_ events [i], type);	723	ev_feed_event (EV_A_ events [i], type);
236	}	724	}
237		725
238	static void	726	/*****************************************************************************/
		727
		728	inline_speed void
239	fd_event (EV_P_ int fd, int events)	729	fd_event (EV_P_ int fd, int revents)
240	{	730	{
241	ANFD *anfd = anfds + fd;	731	ANFD *anfd = anfds + fd;
242	struct ev_io *w;	732	ev_io *w;
243		733
244	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)
245	{	735	{
246	int ev = w->events & events;	736	int ev = w->events & revents;
247		737
248	if (ev)	738	if (ev)
249	event (EV_A_ (W)w, ev);	739	ev_feed_event (EV_A_ (W)w, ev);
250	}	740	}
251	}	741	}
252		742
253	/*****************************************************************************/	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	}
254		749
255	static void	750	inline_size void
256	fd_reify (EV_P)	751	fd_reify (EV_P)
257	{	752	{
258	int i;	753	int i;
259		754
260	for (i = 0; i < fdchangecnt; ++i)	755	for (i = 0; i < fdchangecnt; ++i)
261	{	756	{
262	int fd = fdchanges [i];	757	int fd = fdchanges [i];
263	ANFD *anfd = anfds + fd;	758	ANFD *anfd = anfds + fd;
264	struct ev_io *w;	759	ev_io *w;
265		760
266	int events = 0;	761	unsigned char events = 0;
267		762
268	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)
269	events |= w->events;	764	events |= (unsigned char)w->events;
270		765
271	anfd->reify = 0;	766	#if EV_SELECT_IS_WINSOCKET
272		767	if (events)
273	if (anfd->events != events)
274	{	768	{
275	method_modify (EV_A_ fd, anfd->events, events);	769	unsigned long arg;
276	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));
277	}	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	}
278	}	789	}
279		790
280	fdchangecnt = 0;	791	fdchangecnt = 0;
281	}	792	}
282		793
283	static void	794	inline_size void
284	fd_change (EV_P_ int fd)	795	fd_change (EV_P_ int fd, int flags)
285	{	796	{
286	if (anfds [fd].reify || fdchangecnt < 0)	797	unsigned char reify = anfds [fd].reify;
287	return;
288
289	anfds [fd].reify = 1;	798	anfds [fd].reify |= flags;
290		799
		800	if (expect_true (!reify))
		801	{
291	++fdchangecnt;	802	++fdchangecnt;
292	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	803	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
293	fdchanges [fdchangecnt - 1] = fd;	804	fdchanges [fdchangecnt - 1] = fd;
		805	}
294	}	806	}
295		807
296	static void	808	inline_speed void
297	fd_kill (EV_P_ int fd)	809	fd_kill (EV_P_ int fd)
298	{	810	{
299	struct ev_io *w;	811	ev_io *w;
300		812
301	while ((w = (struct ev_io *)anfds [fd].head))	813	while ((w = (ev_io *)anfds [fd].head))
302	{	814	{
303	ev_io_stop (EV_A_ w);	815	ev_io_stop (EV_A_ w);
304	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);
305	}	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
306	}	828	}
307		829
308	/* called on EBADF to verify fds */	830	/* called on EBADF to verify fds */
309	static void	831	static void noinline
310	fd_ebadf (EV_P)	832	fd_ebadf (EV_P)
311	{	833	{
312	int fd;	834	int fd;
313		835
314	for (fd = 0; fd < anfdmax; ++fd)	836	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	837	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	838	if (!fd_valid (fd) && errno == EBADF)
317	fd_kill (EV_A_ fd);	839	fd_kill (EV_A_ fd);
318	}	840	}
319		841
320	/* 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 */
321	static void	843	static void noinline
322	fd_enomem (EV_P)	844	fd_enomem (EV_P)
323	{	845	{
324	int fd = anfdmax;	846	int fd;
325		847
326	while (fd--)	848	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	849	if (anfds [fd].events)
328	{	850	{
329	close (fd);
330	fd_kill (EV_A_ fd);	851	fd_kill (EV_A_ fd);
331	return;	852	return;
332	}	853	}
333	}	854	}
334		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
335	/*****************************************************************************/	871	/*****************************************************************************/
336		872
337	static void	873	/*
338	upheap (WT *timers, int k)	874	* the heap functions want a real array index. array index 0 uis guaranteed to not
339	{	875	* be in-use at any time. the first heap entry is at array [HEAP0]. DHEAP gives
340	WT w = timers [k];	876	* the branching factor of the d-tree.
		877	*/
341		878
342	while (k && timers [k >> 1]->at > w->at)	879	/*
343	{	880	* at the moment we allow libev the luxury of two heaps,
344	timers [k] = timers [k >> 1];	881	* a small-code-size 2-heap one and a ~1.5kb larger 4-heap
345	timers [k]->active = k + 1;	882	* which is more cache-efficient.
346	k >>= 1;	883	* the difference is about 5% with 50000+ watchers.
347	}	884	*/
		885	#if EV_USE_4HEAP
348		886
349	timers [k] = w;	887	#define DHEAP 4
350	timers [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))
351		891
352	}	892	/* away from the root */
353		893	inline_speed void
354	static void
355	downheap (WT *timers, int N, int k)	894	downheap (ANHE *heap, int N, int k)
356	{	895	{
357	WT w = timers [k];	896	ANHE he = heap [k];
		897	ANHE *E = heap + N + HEAP0;
358		898
359	while (k < (N >> 1))	899	for (;;)
360	{	900	{
361	int j = k << 1;	901	ev_tstamp minat;
		902	ANHE *minpos;
		903	ANHE *pos = heap + DHEAP * (k - HEAP0) + HEAP0 + 1;
362		904
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	905	/* find minimum child */
		906	if (expect_true (pos + DHEAP - 1 < E))
364	++j;	907	{
365		908	/* fast path */ (minpos = pos + 0), (minat = ANHE_at (*minpos));
366	if (w->at <= timers [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
367	break;	921	break;
368		922
369	timers [k] = timers [j];	923	if (ANHE_at (he) <= minat)
370	timers [k]->active = k + 1;	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
		961	heap [k] = heap [c];
		962	ev_active (ANHE_w (heap [k])) = k;
		963
371	k = j;	964	k = c;
		965	}
		966
		967	heap [k] = he;
		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 (;;)
372	}	979	{
		980	int p = HPARENT (k);
373		981
374	timers [k] = w;	982	if (UPHEAP_DONE (p, k) || ANHE_at (heap [p]) <= ANHE_at (he))
375	timers [k]->active = k + 1;	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);
376	}	1013	}
377		1014
378	/*****************************************************************************/	1015	/*****************************************************************************/
379		1016
380	typedef struct	1017	typedef struct
381	{	1018	{
382	struct ev_watcher_list *head;	1019	WL head;
383	sig_atomic_t volatile gotsig;	1020	EV_ATOMIC_T gotsig;
384	} ANSIG;	1021	} ANSIG;
385		1022
386	static ANSIG *signals;	1023	static ANSIG *signals;
387	static int signalmax;	1024	static int signalmax;
388		1025
389	static int sigpipe [2];	1026	static EV_ATOMIC_T gotsig;
390	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	}
391		1092
392	static void	1093	static void
393	signals_init (ANSIG *base, int count)	1094	pipecb (EV_P_ ev_io *iow, int revents)
394	{	1095	{
395	while (count--)	1096	#if EV_USE_EVENTFD
		1097	if (evfd >= 0)
		1098	{
		1099	uint64_t counter;
		1100	read (evfd, &counter, sizeof (uint64_t));
396	{	1101	}
397	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;
398	base->gotsig = 0;	1112	gotsig = 0;
399		1113
400	++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)
401	}	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
402	}	1133	}
		1134
		1135	/*****************************************************************************/
403		1136
404	static void	1137	static void
405	sighandler (int signum)	1138	ev_sighandler (int signum)
406	{	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
407	signals [signum - 1].gotsig = 1;	1148	signals [signum - 1].gotsig = 1;
408		1149	evpipe_write (EV_A_ &gotsig);
409	if (!gotsig)
410	{
411	int old_errno = errno;
412	gotsig = 1;
413	write (sigpipe [1], &signum, 1);
414	errno = old_errno;
415	}
416	}	1150	}
417		1151
418	static void	1152	void noinline
419	sigcb (EV_P_ struct ev_io *iow, int revents)	1153	ev_feed_signal_event (EV_P_ int signum)
420	{	1154	{
421	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
422	int signum;	1161	--signum;
423		1162
424	read (sigpipe [0], &revents, 1);	1163	if (signum < 0 || signum >= signalmax)
425	gotsig = 0;	1164	return;
426		1165
427	for (signum = signalmax; signum--; )
428	if (signals [signum].gotsig)
429	{
430	signals [signum].gotsig = 0;	1166	signals [signum].gotsig = 0;
431		1167
432	for (w = signals [signum].head; w; w = w->next)	1168	for (w = signals [signum].head; w; w = w->next)
433	event (EV_A_ (W)w, EV_SIGNAL);	1169	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
434	}
435	}
436
437	static void
438	siginit (EV_P)
439	{
440	#ifndef WIN32
441	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
442	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
443
444	/* rather than sort out wether we really need nb, set it */
445	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
446	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
447	#endif
448
449	ev_io_set (&sigev, sigpipe [0], EV_READ);
450	ev_io_start (&sigev);
451	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	1170	}
453		1171
454	/*****************************************************************************/	1172	/*****************************************************************************/
455		1173
		1174	static WL childs [EV_PID_HASHSIZE];
		1175
456	#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	}
457		1202
458	#ifndef WCONTINUED	1203	#ifndef WCONTINUED
459	# define WCONTINUED 0	1204	# define WCONTINUED 0
460	#endif	1205	#endif
461		1206
462	static void	1207	static void
463	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
464	{
465	struct ev_child *w;
466
467	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
468	if (w->pid == pid || !w->pid)
469	{
470	w->priority = sw->priority; /* need to do it *now* */
471	w->rpid = pid;
472	w->rstatus = status;
473	event (EV_A_ (W)w, EV_CHILD);
474	}
475	}
476
477	static void
478	childcb (EV_P_ struct ev_signal *sw, int revents)	1208	childcb (EV_P_ ev_signal *sw, int revents)
479	{	1209	{
480	int pid, status;	1210	int pid, status;
481		1211
		1212	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
482	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	1213	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
483	{	1214	if (!WCONTINUED
		1215	|| errno != EINVAL
		1216	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
		1217	return;
		1218
484	/* 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 */
485	event (EV_A_ (W)sw, EV_SIGNAL);	1221	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
486		1222
487	child_reap (EV_A_ sw, pid, pid, status);	1223	child_reap (EV_A_ pid, pid, status);
		1224	if (EV_PID_HASHSIZE > 1)
488	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 */
489	}
490	}	1226	}
491		1227
492	#endif	1228	#endif
493		1229
494	/*****************************************************************************/	1230	/*****************************************************************************/
495		1231
		1232	#if EV_USE_PORT
		1233	# include "ev_port.c"
		1234	#endif
496	#if EV_USE_KQUEUE	1235	#if EV_USE_KQUEUE
497	# include "ev_kqueue.c"	1236	# include "ev_kqueue.c"
498	#endif	1237	#endif
499	#if EV_USE_EPOLL	1238	#if EV_USE_EPOLL
500	# include "ev_epoll.c"	1239	# include "ev_epoll.c"
501	#endif	1240	#endif
502	#if EV_USEV_POLL	1241	#if EV_USE_POLL
503	# include "ev_poll.c"	1242	# include "ev_poll.c"
504	#endif	1243	#endif
505	#if EV_USE_SELECT	1244	#if EV_USE_SELECT
506	# include "ev_select.c"	1245	# include "ev_select.c"
507	#endif	1246	#endif
…		…
517	{	1256	{
518	return EV_VERSION_MINOR;	1257	return EV_VERSION_MINOR;
519	}	1258	}
520		1259
521	/* 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 */
522	static int	1261	int inline_size
523	enable_secure (void)	1262	enable_secure (void)
524	{	1263	{
525	#ifdef WIN32	1264	#ifdef _WIN32
526	return 0;	1265	return 0;
527	#else	1266	#else
528	return getuid () != geteuid ()	1267	return getuid () != geteuid ()
529	|| getgid () != getegid ();	1268	|| getgid () != getegid ();
530	#endif	1269	#endif
531	}	1270	}
532		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
533	int	1676	int
534	ev_method (EV_P)	1677	ev_default_loop (unsigned int flags)
		1678	#endif
535	{	1679	{
536	return method;	1680	if (!ev_default_loop_ptr)
537	}	1681	{
538
539	int
540	ev_init (EV_P_ int methods)
541	{
542	#ifdef EV_MULTIPLICITY	1682	#if EV_MULTIPLICITY
543	memset (loop, 0, sizeof (struct ev_loop));	1683	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1684	#else
		1685	ev_default_loop_ptr = 1;
544	#endif	1686	#endif
545		1687
546	if (!method)	1688	loop_init (EV_A_ flags);
547	{
548	#if EV_USE_MONOTONIC
549	{
550	struct timespec ts;
551	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
552	have_monotonic = 1;
553	}
554	#endif
555		1689
556	rt_now = ev_time ();	1690	if (ev_backend (EV_A))
557	mn_now = get_clock ();
558	now_floor = mn_now;
559	diff = rt_now - mn_now;
560
561	if (pipe (sigpipe))
562	return 0;
563
564	if (methods == EVMETHOD_AUTO)
565	if (!enable_secure () && getenv ("LIBmethodS"))
566	methods = atoi (getenv ("LIBmethodS"));
567	else
568	methods = EVMETHOD_ANY;
569
570	method = 0;
571	#if EV_USE_KQUEUE
572	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
573	#endif
574	#if EV_USE_EPOLL
575	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
576	#endif
577	#if EV_USEV_POLL
578	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
579	#endif
580	#if EV_USE_SELECT
581	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
582	#endif
583
584	if (method)
585	{	1691	{
586	ev_watcher_init (&sigev, sigcb);
587	ev_set_priority (&sigev, EV_MAXPRI);
588	siginit (EV_A);
589
590	#ifndef WIN32	1692	#ifndef _WIN32
591	ev_signal_init (&childev, childcb, SIGCHLD);	1693	ev_signal_init (&childev, childcb, SIGCHLD);
592	ev_set_priority (&childev, EV_MAXPRI);	1694	ev_set_priority (&childev, EV_MAXPRI);
593	ev_signal_start (EV_A_ &childev);	1695	ev_signal_start (EV_A_ &childev);
594	ev_unref (EV_A); /* child watcher should not keep loop alive */	1696	ev_unref (EV_A); /* child watcher should not keep loop alive */
595	#endif	1697	#endif
596	}	1698	}
		1699	else
		1700	ev_default_loop_ptr = 0;
597	}	1701	}
598		1702
599	return method;	1703	return ev_default_loop_ptr;
		1704	}
		1705
		1706	void
		1707	ev_default_destroy (void)
		1708	{
		1709	#if EV_MULTIPLICITY
		1710	struct ev_loop *loop = ev_default_loop_ptr;
		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 */
600	}	1731	}
601		1732
602	/*****************************************************************************/	1733	/*****************************************************************************/
603		1734
604	void	1735	void
605	ev_fork_prepare (void)	1736	ev_invoke (EV_P_ void *w, int revents)
606	{	1737	{
607	/* nop */	1738	EV_CB_INVOKE ((W)w, revents);
608	}	1739	}
609		1740
610	void	1741	inline_speed void
611	ev_fork_parent (void)
612	{
613	/* nop */
614	}
615
616	void
617	ev_fork_child (void)
618	{
619	#if EV_USE_EPOLL
620	if (method == EVMETHOD_EPOLL)
621	epoll_postfork_child ();
622	#endif
623
624	ev_io_stop (&sigev);
625	close (sigpipe [0]);
626	close (sigpipe [1]);
627	pipe (sigpipe);
628	siginit ();
629	}
630
631	/*****************************************************************************/
632
633	static void
634	call_pending (EV_P)	1742	call_pending (EV_P)
635	{	1743	{
636	int pri;	1744	int pri;
637		1745
638	for (pri = NUMPRI; pri--; )	1746	for (pri = NUMPRI; pri--; )
639	while (pendingcnt [pri])	1747	while (pendingcnt [pri])
640	{	1748	{
641	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1749	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
642		1750
643	if (p->w)	1751	if (expect_true (p->w))
644	{	1752	{
		1753	/*assert (("libev: non-pending watcher on pending list", p->w->pending));*/
		1754
645	p->w->pending = 0;	1755	p->w->pending = 0;
646	p->w->cb (EV_A_ p->w, p->events);	1756	EV_CB_INVOKE (p->w, p->events);
		1757	EV_FREQUENT_CHECK;
647	}	1758	}
648	}	1759	}
649	}	1760	}
650		1761
651	static void	1762	#if EV_IDLE_ENABLE
		1763	inline_size void
652	timers_reify (EV_P)	1764	idle_reify (EV_P)
653	{	1765	{
654	while (timercnt && timers [0]->at <= mn_now)	1766	if (expect_false (idleall))
655	{	1767	{
656	struct ev_timer *w = timers [0];	1768	int pri;
657		1769
658	/* first reschedule or stop timer */	1770	for (pri = NUMPRI; pri--; )
659	if (w->repeat)
660	{	1771	{
661	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1772	if (pendingcnt [pri])
662	w->at = mn_now + w->repeat;	1773	break;
663	downheap ((WT *)timers, timercnt, 0);
664	}
665	else
666	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
667		1774
668	event ((W)w, EV_TIMEOUT);	1775	if (idlecnt [pri])
669	}
670	}
671
672	static void
673	periodics_reify (EV_P)
674	{
675	while (periodiccnt && periodics [0]->at <= rt_now)
676	{
677	struct ev_periodic *w = periodics [0];
678
679	/* first reschedule or stop timer */
680	if (w->interval)
681	{
682	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
683	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
684	downheap ((WT *)periodics, periodiccnt, 0);
685	}
686	else
687	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
688
689	event (EV_A_ (W)w, EV_PERIODIC);
690	}
691	}
692
693	static void
694	periodics_reschedule (EV_P_ ev_tstamp diff)
695	{
696	int i;
697
698	/* adjust periodics after time jump */
699	for (i = 0; i < periodiccnt; ++i)
700	{
701	struct ev_periodic *w = periodics [i];
702
703	if (w->interval)
704	{
705	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
706
707	if (fabs (diff) >= 1e-4)
708	{	1776	{
709	ev_periodic_stop (EV_A_ w);	1777	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
710	ev_periodic_start (EV_A_ w);	1778	break;
711
712	i = 0; /* restart loop, inefficient, but time jumps should be rare */
713	}	1779	}
714	}	1780	}
715	}	1781	}
716	}	1782	}
		1783	#endif
717		1784
718	inline int	1785	inline_size void
719	time_update_monotonic (EV_P)	1786	timers_reify (EV_P)
720	{	1787	{
721	mn_now = get_clock ();	1788	EV_FREQUENT_CHECK;
722		1789
723	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1790	if (timercnt && ANHE_at (timers [HEAP0]) < mn_now)
724	{
725	rt_now = mn_now + diff;
726	return 0;
727	}	1791	{
728	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);
729	{	1819	}
730	now_floor = mn_now;	1820	}
731	rt_now = ev_time ();	1821
732	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)
733	}	1829	{
734	}	1830	int feed_count = 0;
735		1831
736	static void	1832	do
737	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	inline_speed void
		1902	time_update (EV_P_ ev_tstamp max_block)
738	{	1903	{
739	int i;	1904	int i;
740		1905
741	#if EV_USE_MONOTONIC	1906	#if EV_USE_MONOTONIC
742	if (expect_true (have_monotonic))	1907	if (expect_true (have_monotonic))
743	{	1908	{
744	if (time_update_monotonic (EV_A))	1909	ev_tstamp odiff = rtmn_diff;
		1910
		1911	mn_now = get_clock ();
		1912
		1913	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1914	/* interpolate in the meantime */
		1915	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
745	{	1916	{
746	ev_tstamp odiff = diff;	1917	ev_rt_now = rtmn_diff + mn_now;
		1918	return;
		1919	}
747		1920
		1921	now_floor = mn_now;
		1922	ev_rt_now = ev_time ();
		1923
748	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1924	/* loop a few times, before making important decisions.
		1925	* on the choice of "4": one iteration isn't enough,
		1926	* in case we get preempted during the calls to
		1927	* ev_time and get_clock. a second call is almost guaranteed
		1928	* to succeed in that case, though. and looping a few more times
		1929	* doesn't hurt either as we only do this on time-jumps or
		1930	* in the unlikely event of having been preempted here.
		1931	*/
		1932	for (i = 4; --i; )
		1933	{
		1934	rtmn_diff = ev_rt_now - mn_now;
		1935
		1936	if (expect_true (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP))
		1937	return; /* all is well */
		1938
		1939	ev_rt_now = ev_time ();
		1940	mn_now = get_clock ();
		1941	now_floor = mn_now;
		1942	}
		1943
		1944	# if EV_PERIODIC_ENABLE
		1945	periodics_reschedule (EV_A);
		1946	# endif
		1947	/* no timer adjustment, as the monotonic clock doesn't jump */
		1948	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1949	}
		1950	else
		1951	#endif
		1952	{
		1953	ev_rt_now = ev_time ();
		1954
		1955	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
		1956	{
		1957	#if EV_PERIODIC_ENABLE
		1958	periodics_reschedule (EV_A);
		1959	#endif
		1960	/* adjust timers. this is easy, as the offset is the same for all of them */
		1961	for (i = 0; i < timercnt; ++i)
749	{	1962	{
750	diff = rt_now - mn_now;	1963	ANHE *he = timers + i + HEAP0;
751		1964	ANHE_w (*he)->at += ev_rt_now - mn_now;
752	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1965	ANHE_at_cache (*he);
753	return; /* all is well */
754
755	rt_now = ev_time ();
756	mn_now = get_clock ();
757	now_floor = mn_now;
758	}	1966	}
759
760	periodics_reschedule (EV_A_ diff - odiff);
761	/* no timer adjustment, as the monotonic clock doesn't jump */
762	}	1967	}
763	}
764	else
765	#endif
766	{
767	rt_now = ev_time ();
768		1968
769	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
770	{
771	periodics_reschedule (EV_A_ rt_now - mn_now);
772
773	/* adjust timers. this is easy, as the offset is the same for all */
774	for (i = 0; i < timercnt; ++i)
775	timers [i]->at += diff;
776	}
777
778	mn_now = rt_now;	1969	mn_now = ev_rt_now;
779	}	1970	}
780	}	1971	}
781		1972
782	void	1973	void
783	ev_ref (EV_P)	1974	ev_ref (EV_P)
…		…
789	ev_unref (EV_P)	1980	ev_unref (EV_P)
790	{	1981	{
791	--activecnt;	1982	--activecnt;
792	}	1983	}
793		1984
		1985	void
		1986	ev_now_update (EV_P)
		1987	{
		1988	time_update (EV_A_ 1e100);
		1989	}
		1990
794	static int loop_done;	1991	static int loop_done;
795		1992
796	void	1993	void
797	ev_loop (EV_P_ int flags)	1994	ev_loop (EV_P_ int flags)
798	{	1995	{
799	double block;	1996	loop_done = EVUNLOOP_CANCEL;
800	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1997
		1998	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
801		1999
802	do	2000	do
803	{	2001	{
		2002	#if EV_VERIFY >= 2
		2003	ev_loop_verify (EV_A);
		2004	#endif
		2005
		2006	#ifndef _WIN32
		2007	if (expect_false (curpid)) /* penalise the forking check even more */
		2008	if (expect_false (getpid () != curpid))
		2009	{
		2010	curpid = getpid ();
		2011	postfork = 1;
		2012	}
		2013	#endif
		2014
		2015	#if EV_FORK_ENABLE
		2016	/* we might have forked, so queue fork handlers */
		2017	if (expect_false (postfork))
		2018	if (forkcnt)
		2019	{
		2020	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		2021	call_pending (EV_A);
		2022	}
		2023	#endif
		2024
804	/* queue check watchers (and execute them) */	2025	/* queue prepare watchers (and execute them) */
805	if (expect_false (preparecnt))	2026	if (expect_false (preparecnt))
806	{	2027	{
807	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	2028	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
808	call_pending (EV_A);	2029	call_pending (EV_A);
809	}	2030	}
810		2031
		2032	/* we might have forked, so reify kernel state if necessary */
		2033	if (expect_false (postfork))
		2034	loop_fork (EV_A);
		2035
811	/* update fd-related kernel structures */	2036	/* update fd-related kernel structures */
812	fd_reify (EV_A);	2037	fd_reify (EV_A);
813		2038
814	/* calculate blocking time */	2039	/* calculate blocking time */
		2040	{
		2041	ev_tstamp waittime = 0.;
		2042	ev_tstamp sleeptime = 0.;
815		2043
816	/* we only need this for !monotonic clockor timers, but as we basically	2044	if (expect_true (!(flags & EVLOOP_NONBLOCK || idleall || !activecnt)))
817	always have timers, we just calculate it always */
818	#if EV_USE_MONOTONIC
819	if (expect_true (have_monotonic))
820	time_update_monotonic (EV_A);
821	else
822	#endif
823	{	2045	{
824	rt_now = ev_time ();	2046	/* update time to cancel out callback processing overhead */
825	mn_now = rt_now;	2047	time_update (EV_A_ 1e100);
826	}
827		2048
828	if (flags & EVLOOP_NONBLOCK || idlecnt)
829	block = 0.;
830	else
831	{
832	block = MAX_BLOCKTIME;
833
834	if (timercnt)	2049	if (timercnt)
835	{	2050	{
836	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	2051	ev_tstamp to = ANHE_at (timers [HEAP0]) - mn_now + backend_fudge;
837	if (block > to) block = to;	2052	if (waittime > to) waittime = to;
838	}	2053	}
839		2054
		2055	#if EV_PERIODIC_ENABLE
840	if (periodiccnt)	2056	if (periodiccnt)
841	{	2057	{
842	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	2058	ev_tstamp to = ANHE_at (periodics [HEAP0]) - ev_rt_now + backend_fudge;
843	if (block > to) block = to;	2059	if (waittime > to) waittime = to;
844	}	2060	}
		2061	#endif
845		2062
846	if (block < 0.) block = 0.;	2063	if (expect_false (waittime < timeout_blocktime))
		2064	waittime = timeout_blocktime;
		2065
		2066	sleeptime = waittime - backend_fudge;
		2067
		2068	if (expect_true (sleeptime > io_blocktime))
		2069	sleeptime = io_blocktime;
		2070
		2071	if (sleeptime)
		2072	{
		2073	ev_sleep (sleeptime);
		2074	waittime -= sleeptime;
		2075	}
847	}	2076	}
848		2077
849	method_poll (EV_A_ block);	2078	++loop_count;
		2079	backend_poll (EV_A_ waittime);
850		2080
851	/* update rt_now, do magic */	2081	/* update ev_rt_now, do magic */
852	time_update (EV_A);	2082	time_update (EV_A_ waittime + sleeptime);
		2083	}
853		2084
854	/* queue pending timers and reschedule them */	2085	/* queue pending timers and reschedule them */
855	timers_reify (EV_A); /* relative timers called last */	2086	timers_reify (EV_A); /* relative timers called last */
		2087	#if EV_PERIODIC_ENABLE
856	periodics_reify (EV_A); /* absolute timers called first */	2088	periodics_reify (EV_A); /* absolute timers called first */
		2089	#endif
857		2090
		2091	#if EV_IDLE_ENABLE
858	/* queue idle watchers unless io or timers are pending */	2092	/* queue idle watchers unless other events are pending */
859	if (!pendingcnt)	2093	idle_reify (EV_A);
860	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	2094	#endif
861		2095
862	/* queue check watchers, to be executed first */	2096	/* queue check watchers, to be executed first */
863	if (checkcnt)	2097	if (expect_false (checkcnt))
864	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	2098	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
865		2099
866	call_pending (EV_A);	2100	call_pending (EV_A);
867	}	2101	}
868	while (activecnt && !loop_done);	2102	while (expect_true (
		2103	activecnt
		2104	&& !loop_done
		2105	&& !(flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK))
		2106	));
869		2107
870	if (loop_done != 2)	2108	if (loop_done == EVUNLOOP_ONE)
871	loop_done = 0;	2109	loop_done = EVUNLOOP_CANCEL;
872	}	2110	}
873		2111
874	void	2112	void
875	ev_unloop (EV_P_ int how)	2113	ev_unloop (EV_P_ int how)
876	{	2114	{
877	loop_done = how;	2115	loop_done = how;
878	}	2116	}
879		2117
880	/*****************************************************************************/	2118	/*****************************************************************************/
881		2119
882	inline void	2120	inline_size void
883	wlist_add (WL *head, WL elem)	2121	wlist_add (WL *head, WL elem)
884	{	2122	{
885	elem->next = *head;	2123	elem->next = *head;
886	*head = elem;	2124	*head = elem;
887	}	2125	}
888		2126
889	inline void	2127	inline_size void
890	wlist_del (WL *head, WL elem)	2128	wlist_del (WL *head, WL elem)
891	{	2129	{
892	while (*head)	2130	while (*head)
893	{	2131	{
894	if (*head == elem)	2132	if (*head == elem)
…		…
899		2137
900	head = &(*head)->next;	2138	head = &(*head)->next;
901	}	2139	}
902	}	2140	}
903		2141
904	inline void	2142	inline_speed void
905	ev_clear_pending (EV_P_ W w)	2143	clear_pending (EV_P_ W w)
906	{	2144	{
907	if (w->pending)	2145	if (w->pending)
908	{	2146	{
909	pendings [ABSPRI (w)][w->pending - 1].w = 0;	2147	pendings [ABSPRI (w)][w->pending - 1].w = 0;
910	w->pending = 0;	2148	w->pending = 0;
911	}	2149	}
912	}	2150	}
913		2151
		2152	int
		2153	ev_clear_pending (EV_P_ void *w)
		2154	{
		2155	W w_ = (W)w;
		2156	int pending = w_->pending;
		2157
		2158	if (expect_true (pending))
		2159	{
		2160	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		2161	w_->pending = 0;
		2162	p->w = 0;
		2163	return p->events;
		2164	}
		2165	else
		2166	return 0;
		2167	}
		2168
914	inline void	2169	inline_size void
		2170	pri_adjust (EV_P_ W w)
		2171	{
		2172	int pri = w->priority;
		2173	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		2174	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		2175	w->priority = pri;
		2176	}
		2177
		2178	inline_speed void
915	ev_start (EV_P_ W w, int active)	2179	ev_start (EV_P_ W w, int active)
916	{	2180	{
917	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	2181	pri_adjust (EV_A_ w);
918	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
919
920	w->active = active;	2182	w->active = active;
921	ev_ref (EV_A);	2183	ev_ref (EV_A);
922	}	2184	}
923		2185
924	inline void	2186	inline_size void
925	ev_stop (EV_P_ W w)	2187	ev_stop (EV_P_ W w)
926	{	2188	{
927	ev_unref (EV_A);	2189	ev_unref (EV_A);
928	w->active = 0;	2190	w->active = 0;
929	}	2191	}
930		2192
931	/*****************************************************************************/	2193	/*****************************************************************************/
932		2194
933	void	2195	void noinline
934	ev_io_start (EV_P_ struct ev_io *w)	2196	ev_io_start (EV_P_ ev_io *w)
935	{	2197	{
936	int fd = w->fd;	2198	int fd = w->fd;
937		2199
938	if (ev_is_active (w))	2200	if (expect_false (ev_is_active (w)))
939	return;	2201	return;
940		2202
941	assert (("ev_io_start called with negative fd", fd >= 0));	2203	assert (("libev: ev_io_start called with negative fd", fd >= 0));
		2204	assert (("libev: ev_io start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
		2205
		2206	EV_FREQUENT_CHECK;
942		2207
943	ev_start (EV_A_ (W)w, 1);	2208	ev_start (EV_A_ (W)w, 1);
944	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	2209	array_needsize (ANFD, anfds, anfdmax, fd + 1, array_init_zero);
945	wlist_add ((WL *)&anfds[fd].head, (WL)w);	2210	wlist_add (&anfds[fd].head, (WL)w);
946		2211
947	fd_change (EV_A_ fd);	2212	fd_change (EV_A_ fd, w->events & EV__IOFDSET | 1);
948	}	2213	w->events &= ~EV__IOFDSET;
949		2214
950	void	2215	EV_FREQUENT_CHECK;
		2216	}
		2217
		2218	void noinline
951	ev_io_stop (EV_P_ struct ev_io *w)	2219	ev_io_stop (EV_P_ ev_io *w)
952	{	2220	{
953	ev_clear_pending (EV_A_ (W)w);	2221	clear_pending (EV_A_ (W)w);
954	if (!ev_is_active (w))	2222	if (expect_false (!ev_is_active (w)))
955	return;	2223	return;
956		2224
		2225	assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		2226
		2227	EV_FREQUENT_CHECK;
		2228
957	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	2229	wlist_del (&anfds[w->fd].head, (WL)w);
958	ev_stop (EV_A_ (W)w);	2230	ev_stop (EV_A_ (W)w);
959		2231
960	fd_change (EV_A_ w->fd);	2232	fd_change (EV_A_ w->fd, 1);
961	}
962		2233
963	void	2234	EV_FREQUENT_CHECK;
		2235	}
		2236
		2237	void noinline
964	ev_timer_start (EV_P_ struct ev_timer *w)	2238	ev_timer_start (EV_P_ ev_timer *w)
965	{	2239	{
966	if (ev_is_active (w))	2240	if (expect_false (ev_is_active (w)))
967	return;	2241	return;
968		2242
969	w->at += mn_now;	2243	ev_at (w) += mn_now;
970		2244
971	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	2245	assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
972		2246
		2247	EV_FREQUENT_CHECK;
		2248
		2249	++timercnt;
973	ev_start (EV_A_ (W)w, ++timercnt);	2250	ev_start (EV_A_ (W)w, timercnt + HEAP0 - 1);
974	array_needsize (timers, timermax, timercnt, );	2251	array_needsize (ANHE, timers, timermax, ev_active (w) + 1, EMPTY2);
975	timers [timercnt - 1] = w;	2252	ANHE_w (timers [ev_active (w)]) = (WT)w;
976	upheap ((WT *)timers, timercnt - 1);	2253	ANHE_at_cache (timers [ev_active (w)]);
977	}	2254	upheap (timers, ev_active (w));
978		2255
979	void	2256	EV_FREQUENT_CHECK;
		2257
		2258	/*assert (("libev: internal timer heap corruption", timers [ev_active (w)] == (WT)w));*/
		2259	}
		2260
		2261	void noinline
980	ev_timer_stop (EV_P_ struct ev_timer *w)	2262	ev_timer_stop (EV_P_ ev_timer *w)
981	{	2263	{
982	ev_clear_pending (EV_A_ (W)w);	2264	clear_pending (EV_A_ (W)w);
983	if (!ev_is_active (w))	2265	if (expect_false (!ev_is_active (w)))
984	return;	2266	return;
985		2267
986	if (w->active < timercnt--)	2268	EV_FREQUENT_CHECK;
		2269
		2270	{
		2271	int active = ev_active (w);
		2272
		2273	assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
		2274
		2275	--timercnt;
		2276
		2277	if (expect_true (active < timercnt + HEAP0))
987	{	2278	{
988	timers [w->active - 1] = timers [timercnt];	2279	timers [active] = timers [timercnt + HEAP0];
989	downheap ((WT *)timers, timercnt, w->active - 1);	2280	adjustheap (timers, timercnt, active);
990	}	2281	}
		2282	}
991		2283
992	w->at = w->repeat;	2284	EV_FREQUENT_CHECK;
		2285
		2286	ev_at (w) -= mn_now;
993		2287
994	ev_stop (EV_A_ (W)w);	2288	ev_stop (EV_A_ (W)w);
995	}	2289	}
996		2290
997	void	2291	void noinline
998	ev_timer_again (EV_P_ struct ev_timer *w)	2292	ev_timer_again (EV_P_ ev_timer *w)
999	{	2293	{
		2294	EV_FREQUENT_CHECK;
		2295
1000	if (ev_is_active (w))	2296	if (ev_is_active (w))
1001	{	2297	{
1002	if (w->repeat)	2298	if (w->repeat)
1003	{	2299	{
1004	w->at = mn_now + w->repeat;	2300	ev_at (w) = mn_now + w->repeat;
		2301	ANHE_at_cache (timers [ev_active (w)]);
1005	downheap ((WT *)timers, timercnt, w->active - 1);	2302	adjustheap (timers, timercnt, ev_active (w));
1006	}	2303	}
1007	else	2304	else
1008	ev_timer_stop (EV_A_ w);	2305	ev_timer_stop (EV_A_ w);
1009	}	2306	}
1010	else if (w->repeat)	2307	else if (w->repeat)
		2308	{
		2309	ev_at (w) = w->repeat;
1011	ev_timer_start (EV_A_ w);	2310	ev_timer_start (EV_A_ w);
1012	}	2311	}
1013		2312
1014	void	2313	EV_FREQUENT_CHECK;
		2314	}
		2315
		2316	#if EV_PERIODIC_ENABLE
		2317	void noinline
1015	ev_periodic_start (EV_P_ struct ev_periodic *w)	2318	ev_periodic_start (EV_P_ ev_periodic *w)
1016	{	2319	{
1017	if (ev_is_active (w))	2320	if (expect_false (ev_is_active (w)))
1018	return;	2321	return;
1019		2322
		2323	if (w->reschedule_cb)
		2324	ev_at (w) = w->reschedule_cb (w, ev_rt_now);
		2325	else if (w->interval)
		2326	{
1020	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	2327	assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
1021
1022	/* this formula differs from the one in periodic_reify because we do not always round up */	2328	/* this formula differs from the one in periodic_reify because we do not always round up */
1023	if (w->interval)
1024	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	2329	ev_at (w) = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		2330	}
		2331	else
		2332	ev_at (w) = w->offset;
1025		2333
		2334	EV_FREQUENT_CHECK;
		2335
		2336	++periodiccnt;
1026	ev_start (EV_A_ (W)w, ++periodiccnt);	2337	ev_start (EV_A_ (W)w, periodiccnt + HEAP0 - 1);
1027	array_needsize (periodics, periodicmax, periodiccnt, );	2338	array_needsize (ANHE, periodics, periodicmax, ev_active (w) + 1, EMPTY2);
1028	periodics [periodiccnt - 1] = w;	2339	ANHE_w (periodics [ev_active (w)]) = (WT)w;
1029	upheap ((WT *)periodics, periodiccnt - 1);	2340	ANHE_at_cache (periodics [ev_active (w)]);
1030	}	2341	upheap (periodics, ev_active (w));
1031		2342
1032	void	2343	EV_FREQUENT_CHECK;
		2344
		2345	/*assert (("libev: internal periodic heap corruption", ANHE_w (periodics [ev_active (w)]) == (WT)w));*/
		2346	}
		2347
		2348	void noinline
1033	ev_periodic_stop (EV_P_ struct ev_periodic *w)	2349	ev_periodic_stop (EV_P_ ev_periodic *w)
1034	{	2350	{
1035	ev_clear_pending (EV_A_ (W)w);	2351	clear_pending (EV_A_ (W)w);
1036	if (!ev_is_active (w))	2352	if (expect_false (!ev_is_active (w)))
1037	return;	2353	return;
1038		2354
1039	if (w->active < periodiccnt--)	2355	EV_FREQUENT_CHECK;
		2356
		2357	{
		2358	int active = ev_active (w);
		2359
		2360	assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
		2361
		2362	--periodiccnt;
		2363
		2364	if (expect_true (active < periodiccnt + HEAP0))
1040	{	2365	{
1041	periodics [w->active - 1] = periodics [periodiccnt];	2366	periodics [active] = periodics [periodiccnt + HEAP0];
1042	downheap ((WT *)periodics, periodiccnt, w->active - 1);	2367	adjustheap (periodics, periodiccnt, active);
1043	}	2368	}
		2369	}
		2370
		2371	EV_FREQUENT_CHECK;
1044		2372
1045	ev_stop (EV_A_ (W)w);	2373	ev_stop (EV_A_ (W)w);
1046	}	2374	}
		2375
		2376	void noinline
		2377	ev_periodic_again (EV_P_ ev_periodic *w)
		2378	{
		2379	/* TODO: use adjustheap and recalculation */
		2380	ev_periodic_stop (EV_A_ w);
		2381	ev_periodic_start (EV_A_ w);
		2382	}
		2383	#endif
1047		2384
1048	#ifndef SA_RESTART	2385	#ifndef SA_RESTART
1049	# define SA_RESTART 0	2386	# define SA_RESTART 0
1050	#endif	2387	#endif
1051		2388
1052	void	2389	void noinline
1053	ev_signal_start (EV_P_ struct ev_signal *w)	2390	ev_signal_start (EV_P_ ev_signal *w)
1054	{	2391	{
		2392	#if EV_MULTIPLICITY
		2393	assert (("libev: signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2394	#endif
1055	if (ev_is_active (w))	2395	if (expect_false (ev_is_active (w)))
1056	return;	2396	return;
1057		2397
1058	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	2398	assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0));
		2399
		2400	evpipe_init (EV_A);
		2401
		2402	EV_FREQUENT_CHECK;
		2403
		2404	{
		2405	#ifndef _WIN32
		2406	sigset_t full, prev;
		2407	sigfillset (&full);
		2408	sigprocmask (SIG_SETMASK, &full, &prev);
		2409	#endif
		2410
		2411	array_needsize (ANSIG, signals, signalmax, w->signum, array_init_zero);
		2412
		2413	#ifndef _WIN32
		2414	sigprocmask (SIG_SETMASK, &prev, 0);
		2415	#endif
		2416	}
1059		2417
1060	ev_start (EV_A_ (W)w, 1);	2418	ev_start (EV_A_ (W)w, 1);
1061	array_needsize (signals, signalmax, w->signum, signals_init);
1062	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	2419	wlist_add (&signals [w->signum - 1].head, (WL)w);
1063		2420
1064	if (!w->next)	2421	if (!((WL)w)->next)
1065	{	2422	{
		2423	#if _WIN32
		2424	signal (w->signum, ev_sighandler);
		2425	#else
1066	struct sigaction sa;	2426	struct sigaction sa;
1067	sa.sa_handler = sighandler;	2427	sa.sa_handler = ev_sighandler;
1068	sigfillset (&sa.sa_mask);	2428	sigfillset (&sa.sa_mask);
1069	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	2429	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1070	sigaction (w->signum, &sa, 0);	2430	sigaction (w->signum, &sa, 0);
		2431	#endif
1071	}	2432	}
1072	}
1073		2433
1074	void	2434	EV_FREQUENT_CHECK;
		2435	}
		2436
		2437	void noinline
1075	ev_signal_stop (EV_P_ struct ev_signal *w)	2438	ev_signal_stop (EV_P_ ev_signal *w)
1076	{	2439	{
1077	ev_clear_pending (EV_A_ (W)w);	2440	clear_pending (EV_A_ (W)w);
1078	if (!ev_is_active (w))	2441	if (expect_false (!ev_is_active (w)))
1079	return;	2442	return;
1080		2443
		2444	EV_FREQUENT_CHECK;
		2445
1081	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	2446	wlist_del (&signals [w->signum - 1].head, (WL)w);
1082	ev_stop (EV_A_ (W)w);	2447	ev_stop (EV_A_ (W)w);
1083		2448
1084	if (!signals [w->signum - 1].head)	2449	if (!signals [w->signum - 1].head)
1085	signal (w->signum, SIG_DFL);	2450	signal (w->signum, SIG_DFL);
1086	}
1087		2451
		2452	EV_FREQUENT_CHECK;
		2453	}
		2454
1088	void	2455	void
1089	ev_idle_start (EV_P_ struct ev_idle *w)	2456	ev_child_start (EV_P_ ev_child *w)
1090	{	2457	{
		2458	#if EV_MULTIPLICITY
		2459	assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		2460	#endif
1091	if (ev_is_active (w))	2461	if (expect_false (ev_is_active (w)))
1092	return;	2462	return;
1093		2463
		2464	EV_FREQUENT_CHECK;
		2465
1094	ev_start (EV_A_ (W)w, ++idlecnt);	2466	ev_start (EV_A_ (W)w, 1);
1095	array_needsize (idles, idlemax, idlecnt, );	2467	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1096	idles [idlecnt - 1] = w;
1097	}
1098		2468
		2469	EV_FREQUENT_CHECK;
		2470	}
		2471
1099	void	2472	void
1100	ev_idle_stop (EV_P_ struct ev_idle *w)	2473	ev_child_stop (EV_P_ ev_child *w)
1101	{	2474	{
1102	ev_clear_pending (EV_A_ (W)w);	2475	clear_pending (EV_A_ (W)w);
1103	if (ev_is_active (w))	2476	if (expect_false (!ev_is_active (w)))
1104	return;	2477	return;
1105		2478
1106	idles [w->active - 1] = idles [--idlecnt];	2479	EV_FREQUENT_CHECK;
		2480
		2481	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
1107	ev_stop (EV_A_ (W)w);	2482	ev_stop (EV_A_ (W)w);
1108	}
1109		2483
1110	void	2484	EV_FREQUENT_CHECK;
1111	ev_prepare_start (EV_P_ struct ev_prepare *w)	2485	}
		2486
		2487	#if EV_STAT_ENABLE
		2488
		2489	# ifdef _WIN32
		2490	# undef lstat
		2491	# define lstat(a,b) _stati64 (a,b)
		2492	# endif
		2493
		2494	#define DEF_STAT_INTERVAL 5.0074891
		2495	#define NFS_STAT_INTERVAL 30.1074891 /* for filesystems potentially failing inotify */
		2496	#define MIN_STAT_INTERVAL 0.1074891
		2497
		2498	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		2499
		2500	#if EV_USE_INOTIFY
		2501	# define EV_INOTIFY_BUFSIZE 8192
		2502
		2503	static void noinline
		2504	infy_add (EV_P_ ev_stat *w)
1112	{	2505	{
1113	if (ev_is_active (w))	2506	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);
		2507
		2508	if (w->wd < 0)
		2509	{
		2510	w->timer.repeat = w->interval ? w->interval : DEF_STAT_INTERVAL;
		2511	ev_timer_again (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		2512
		2513	/* monitor some parent directory for speedup hints */
		2514	/* note that exceeding the hardcoded path limit is not a correctness issue, */
		2515	/* but an efficiency issue only */
		2516	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		2517	{
		2518	char path [4096];
		2519	strcpy (path, w->path);
		2520
		2521	do
		2522	{
		2523	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		2524	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		2525
		2526	char *pend = strrchr (path, '/');
		2527
		2528	if (!pend || pend == path)
		2529	break;
		2530
		2531	*pend = 0;
		2532	w->wd = inotify_add_watch (fs_fd, path, mask);
		2533	}
		2534	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		2535	}
		2536	}
		2537
		2538	if (w->wd >= 0)
		2539	{
		2540	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2541
		2542	/* now local changes will be tracked by inotify, but remote changes won't */
		2543	/* unless the filesystem it known to be local, we therefore still poll */
		2544	/* also do poll on <2.6.25, but with normal frequency */
		2545	struct statfs sfs;
		2546
		2547	if (fs_2625 && !statfs (w->path, &sfs))
		2548	if (sfs.f_type == 0x1373 /* devfs */
		2549	|| sfs.f_type == 0xEF53 /* ext2/3 */
		2550	|| sfs.f_type == 0x3153464a /* jfs */
		2551	|| sfs.f_type == 0x52654973 /* reiser3 */
		2552	|| sfs.f_type == 0x01021994 /* tempfs */
		2553	|| sfs.f_type == 0x58465342 /* xfs */)
		2554	return;
		2555
		2556	w->timer.repeat = w->interval ? w->interval : fs_2625 ? NFS_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2557	ev_timer_again (EV_A_ &w->timer);
		2558	}
		2559	}
		2560
		2561	static void noinline
		2562	infy_del (EV_P_ ev_stat *w)
		2563	{
		2564	int slot;
		2565	int wd = w->wd;
		2566
		2567	if (wd < 0)
1114	return;	2568	return;
1115		2569
		2570	w->wd = -2;
		2571	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		2572	wlist_del (&fs_hash [slot].head, (WL)w);
		2573
		2574	/* remove this watcher, if others are watching it, they will rearm */
		2575	inotify_rm_watch (fs_fd, wd);
		2576	}
		2577
		2578	static void noinline
		2579	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		2580	{
		2581	if (slot < 0)
		2582	/* overflow, need to check for all hash slots */
		2583	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2584	infy_wd (EV_A_ slot, wd, ev);
		2585	else
		2586	{
		2587	WL w_;
		2588
		2589	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		2590	{
		2591	ev_stat *w = (ev_stat *)w_;
		2592	w_ = w_->next; /* lets us remove this watcher and all before it */
		2593
		2594	if (w->wd == wd || wd == -1)
		2595	{
		2596	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		2597	{
		2598	wlist_del (&fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		2599	w->wd = -1;
		2600	infy_add (EV_A_ w); /* re-add, no matter what */
		2601	}
		2602
		2603	stat_timer_cb (EV_A_ &w->timer, 0);
		2604	}
		2605	}
		2606	}
		2607	}
		2608
		2609	static void
		2610	infy_cb (EV_P_ ev_io *w, int revents)
		2611	{
		2612	char buf [EV_INOTIFY_BUFSIZE];
		2613	struct inotify_event *ev = (struct inotify_event *)buf;
		2614	int ofs;
		2615	int len = read (fs_fd, buf, sizeof (buf));
		2616
		2617	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		2618	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		2619	}
		2620
		2621	inline_size void
		2622	check_2625 (EV_P)
		2623	{
		2624	/* kernels < 2.6.25 are borked
		2625	* http://www.ussg.indiana.edu/hypermail/linux/kernel/0711.3/1208.html
		2626	*/
		2627	struct utsname buf;
		2628	int major, minor, micro;
		2629
		2630	if (uname (&buf))
		2631	return;
		2632
		2633	if (sscanf (buf.release, "%d.%d.%d", &major, &minor, &micro) != 3)
		2634	return;
		2635
		2636	if (major < 2
		2637	|| (major == 2 && minor < 6)
		2638	|| (major == 2 && minor == 6 && micro < 25))
		2639	return;
		2640
		2641	fs_2625 = 1;
		2642	}
		2643
		2644	inline_size void
		2645	infy_init (EV_P)
		2646	{
		2647	if (fs_fd != -2)
		2648	return;
		2649
		2650	fs_fd = -1;
		2651
		2652	check_2625 (EV_A);
		2653
		2654	fs_fd = inotify_init ();
		2655
		2656	if (fs_fd >= 0)
		2657	{
		2658	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		2659	ev_set_priority (&fs_w, EV_MAXPRI);
		2660	ev_io_start (EV_A_ &fs_w);
		2661	}
		2662	}
		2663
		2664	inline_size void
		2665	infy_fork (EV_P)
		2666	{
		2667	int slot;
		2668
		2669	if (fs_fd < 0)
		2670	return;
		2671
		2672	close (fs_fd);
		2673	fs_fd = inotify_init ();
		2674
		2675	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		2676	{
		2677	WL w_ = fs_hash [slot].head;
		2678	fs_hash [slot].head = 0;
		2679
		2680	while (w_)
		2681	{
		2682	ev_stat *w = (ev_stat *)w_;
		2683	w_ = w_->next; /* lets us add this watcher */
		2684
		2685	w->wd = -1;
		2686
		2687	if (fs_fd >= 0)
		2688	infy_add (EV_A_ w); /* re-add, no matter what */
		2689	else
		2690	ev_timer_again (EV_A_ &w->timer);
		2691	}
		2692	}
		2693	}
		2694
		2695	#endif
		2696
		2697	#ifdef _WIN32
		2698	# define EV_LSTAT(p,b) _stati64 (p, b)
		2699	#else
		2700	# define EV_LSTAT(p,b) lstat (p, b)
		2701	#endif
		2702
		2703	void
		2704	ev_stat_stat (EV_P_ ev_stat *w)
		2705	{
		2706	if (lstat (w->path, &w->attr) < 0)
		2707	w->attr.st_nlink = 0;
		2708	else if (!w->attr.st_nlink)
		2709	w->attr.st_nlink = 1;
		2710	}
		2711
		2712	static void noinline
		2713	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2714	{
		2715	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2716
		2717	/* we copy this here each the time so that */
		2718	/* prev has the old value when the callback gets invoked */
		2719	w->prev = w->attr;
		2720	ev_stat_stat (EV_A_ w);
		2721
		2722	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2723	if (
		2724	w->prev.st_dev != w->attr.st_dev
		2725	|| w->prev.st_ino != w->attr.st_ino
		2726	|| w->prev.st_mode != w->attr.st_mode
		2727	|| w->prev.st_nlink != w->attr.st_nlink
		2728	|| w->prev.st_uid != w->attr.st_uid
		2729	|| w->prev.st_gid != w->attr.st_gid
		2730	|| w->prev.st_rdev != w->attr.st_rdev
		2731	|| w->prev.st_size != w->attr.st_size
		2732	|| w->prev.st_atime != w->attr.st_atime
		2733	|| w->prev.st_mtime != w->attr.st_mtime
		2734	|| w->prev.st_ctime != w->attr.st_ctime
		2735	) {
		2736	#if EV_USE_INOTIFY
		2737	if (fs_fd >= 0)
		2738	{
		2739	infy_del (EV_A_ w);
		2740	infy_add (EV_A_ w);
		2741	ev_stat_stat (EV_A_ w); /* avoid race... */
		2742	}
		2743	#endif
		2744
		2745	ev_feed_event (EV_A_ w, EV_STAT);
		2746	}
		2747	}
		2748
		2749	void
		2750	ev_stat_start (EV_P_ ev_stat *w)
		2751	{
		2752	if (expect_false (ev_is_active (w)))
		2753	return;
		2754
		2755	ev_stat_stat (EV_A_ w);
		2756
		2757	if (w->interval < MIN_STAT_INTERVAL && w->interval)
		2758	w->interval = MIN_STAT_INTERVAL;
		2759
		2760	ev_timer_init (&w->timer, stat_timer_cb, 0., w->interval ? w->interval : DEF_STAT_INTERVAL);
		2761	ev_set_priority (&w->timer, ev_priority (w));
		2762
		2763	#if EV_USE_INOTIFY
		2764	infy_init (EV_A);
		2765
		2766	if (fs_fd >= 0)
		2767	infy_add (EV_A_ w);
		2768	else
		2769	#endif
		2770	ev_timer_again (EV_A_ &w->timer);
		2771
		2772	ev_start (EV_A_ (W)w, 1);
		2773
		2774	EV_FREQUENT_CHECK;
		2775	}
		2776
		2777	void
		2778	ev_stat_stop (EV_P_ ev_stat *w)
		2779	{
		2780	clear_pending (EV_A_ (W)w);
		2781	if (expect_false (!ev_is_active (w)))
		2782	return;
		2783
		2784	EV_FREQUENT_CHECK;
		2785
		2786	#if EV_USE_INOTIFY
		2787	infy_del (EV_A_ w);
		2788	#endif
		2789	ev_timer_stop (EV_A_ &w->timer);
		2790
		2791	ev_stop (EV_A_ (W)w);
		2792
		2793	EV_FREQUENT_CHECK;
		2794	}
		2795	#endif
		2796
		2797	#if EV_IDLE_ENABLE
		2798	void
		2799	ev_idle_start (EV_P_ ev_idle *w)
		2800	{
		2801	if (expect_false (ev_is_active (w)))
		2802	return;
		2803
		2804	pri_adjust (EV_A_ (W)w);
		2805
		2806	EV_FREQUENT_CHECK;
		2807
		2808	{
		2809	int active = ++idlecnt [ABSPRI (w)];
		2810
		2811	++idleall;
		2812	ev_start (EV_A_ (W)w, active);
		2813
		2814	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2815	idles [ABSPRI (w)][active - 1] = w;
		2816	}
		2817
		2818	EV_FREQUENT_CHECK;
		2819	}
		2820
		2821	void
		2822	ev_idle_stop (EV_P_ ev_idle *w)
		2823	{
		2824	clear_pending (EV_A_ (W)w);
		2825	if (expect_false (!ev_is_active (w)))
		2826	return;
		2827
		2828	EV_FREQUENT_CHECK;
		2829
		2830	{
		2831	int active = ev_active (w);
		2832
		2833	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2834	ev_active (idles [ABSPRI (w)][active - 1]) = active;
		2835
		2836	ev_stop (EV_A_ (W)w);
		2837	--idleall;
		2838	}
		2839
		2840	EV_FREQUENT_CHECK;
		2841	}
		2842	#endif
		2843
		2844	void
		2845	ev_prepare_start (EV_P_ ev_prepare *w)
		2846	{
		2847	if (expect_false (ev_is_active (w)))
		2848	return;
		2849
		2850	EV_FREQUENT_CHECK;
		2851
1116	ev_start (EV_A_ (W)w, ++preparecnt);	2852	ev_start (EV_A_ (W)w, ++preparecnt);
1117	array_needsize (prepares, preparemax, preparecnt, );	2853	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1118	prepares [preparecnt - 1] = w;	2854	prepares [preparecnt - 1] = w;
1119	}
1120		2855
		2856	EV_FREQUENT_CHECK;
		2857	}
		2858
1121	void	2859	void
1122	ev_prepare_stop (EV_P_ struct ev_prepare *w)	2860	ev_prepare_stop (EV_P_ ev_prepare *w)
1123	{	2861	{
1124	ev_clear_pending (EV_A_ (W)w);	2862	clear_pending (EV_A_ (W)w);
1125	if (ev_is_active (w))	2863	if (expect_false (!ev_is_active (w)))
1126	return;	2864	return;
1127		2865
		2866	EV_FREQUENT_CHECK;
		2867
		2868	{
		2869	int active = ev_active (w);
		2870
1128	prepares [w->active - 1] = prepares [--preparecnt];	2871	prepares [active - 1] = prepares [--preparecnt];
		2872	ev_active (prepares [active - 1]) = active;
		2873	}
		2874
1129	ev_stop (EV_A_ (W)w);	2875	ev_stop (EV_A_ (W)w);
1130	}
1131		2876
		2877	EV_FREQUENT_CHECK;
		2878	}
		2879
1132	void	2880	void
1133	ev_check_start (EV_P_ struct ev_check *w)	2881	ev_check_start (EV_P_ ev_check *w)
1134	{	2882	{
1135	if (ev_is_active (w))	2883	if (expect_false (ev_is_active (w)))
1136	return;	2884	return;
1137		2885
		2886	EV_FREQUENT_CHECK;
		2887
1138	ev_start (EV_A_ (W)w, ++checkcnt);	2888	ev_start (EV_A_ (W)w, ++checkcnt);
1139	array_needsize (checks, checkmax, checkcnt, );	2889	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
1140	checks [checkcnt - 1] = w;	2890	checks [checkcnt - 1] = w;
1141	}
1142		2891
		2892	EV_FREQUENT_CHECK;
		2893	}
		2894
1143	void	2895	void
1144	ev_check_stop (EV_P_ struct ev_check *w)	2896	ev_check_stop (EV_P_ ev_check *w)
1145	{	2897	{
1146	ev_clear_pending (EV_A_ (W)w);	2898	clear_pending (EV_A_ (W)w);
1147	if (ev_is_active (w))	2899	if (expect_false (!ev_is_active (w)))
1148	return;	2900	return;
1149		2901
		2902	EV_FREQUENT_CHECK;
		2903
		2904	{
		2905	int active = ev_active (w);
		2906
1150	checks [w->active - 1] = checks [--checkcnt];	2907	checks [active - 1] = checks [--checkcnt];
		2908	ev_active (checks [active - 1]) = active;
		2909	}
		2910
1151	ev_stop (EV_A_ (W)w);	2911	ev_stop (EV_A_ (W)w);
1152	}
1153		2912
1154	void	2913	EV_FREQUENT_CHECK;
1155	ev_child_start (EV_P_ struct ev_child *w)	2914	}
		2915
		2916	#if EV_EMBED_ENABLE
		2917	void noinline
		2918	ev_embed_sweep (EV_P_ ev_embed *w)
1156	{	2919	{
		2920	ev_loop (w->other, EVLOOP_NONBLOCK);
		2921	}
		2922
		2923	static void
		2924	embed_io_cb (EV_P_ ev_io *io, int revents)
		2925	{
		2926	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2927
1157	if (ev_is_active (w))	2928	if (ev_cb (w))
		2929	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2930	else
		2931	ev_loop (w->other, EVLOOP_NONBLOCK);
		2932	}
		2933
		2934	static void
		2935	embed_prepare_cb (EV_P_ ev_prepare *prepare, int revents)
		2936	{
		2937	ev_embed *w = (ev_embed *)(((char *)prepare) - offsetof (ev_embed, prepare));
		2938
		2939	{
		2940	struct ev_loop *loop = w->other;
		2941
		2942	while (fdchangecnt)
		2943	{
		2944	fd_reify (EV_A);
		2945	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2946	}
		2947	}
		2948	}
		2949
		2950	static void
		2951	embed_fork_cb (EV_P_ ev_fork *fork_w, int revents)
		2952	{
		2953	ev_embed *w = (ev_embed *)(((char *)fork_w) - offsetof (ev_embed, fork));
		2954
		2955	ev_embed_stop (EV_A_ w);
		2956
		2957	{
		2958	struct ev_loop *loop = w->other;
		2959
		2960	ev_loop_fork (EV_A);
		2961	ev_loop (EV_A_ EVLOOP_NONBLOCK);
		2962	}
		2963
		2964	ev_embed_start (EV_A_ w);
		2965	}
		2966
		2967	#if 0
		2968	static void
		2969	embed_idle_cb (EV_P_ ev_idle *idle, int revents)
		2970	{
		2971	ev_idle_stop (EV_A_ idle);
		2972	}
		2973	#endif
		2974
		2975	void
		2976	ev_embed_start (EV_P_ ev_embed *w)
		2977	{
		2978	if (expect_false (ev_is_active (w)))
1158	return;	2979	return;
1159		2980
		2981	{
		2982	struct ev_loop *loop = w->other;
		2983	assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2984	ev_io_init (&w->io, embed_io_cb, backend_fd, EV_READ);
		2985	}
		2986
		2987	EV_FREQUENT_CHECK;
		2988
		2989	ev_set_priority (&w->io, ev_priority (w));
		2990	ev_io_start (EV_A_ &w->io);
		2991
		2992	ev_prepare_init (&w->prepare, embed_prepare_cb);
		2993	ev_set_priority (&w->prepare, EV_MINPRI);
		2994	ev_prepare_start (EV_A_ &w->prepare);
		2995
		2996	ev_fork_init (&w->fork, embed_fork_cb);
		2997	ev_fork_start (EV_A_ &w->fork);
		2998
		2999	/*ev_idle_init (&w->idle, e,bed_idle_cb);*/
		3000
1160	ev_start (EV_A_ (W)w, 1);	3001	ev_start (EV_A_ (W)w, 1);
1161	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1162	}
1163		3002
		3003	EV_FREQUENT_CHECK;
		3004	}
		3005
1164	void	3006	void
1165	ev_child_stop (EV_P_ struct ev_child *w)	3007	ev_embed_stop (EV_P_ ev_embed *w)
1166	{	3008	{
1167	ev_clear_pending (EV_A_ (W)w);	3009	clear_pending (EV_A_ (W)w);
1168	if (ev_is_active (w))	3010	if (expect_false (!ev_is_active (w)))
1169	return;	3011	return;
1170		3012
1171	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	3013	EV_FREQUENT_CHECK;
		3014
		3015	ev_io_stop (EV_A_ &w->io);
		3016	ev_prepare_stop (EV_A_ &w->prepare);
		3017	ev_fork_stop (EV_A_ &w->fork);
		3018
		3019	EV_FREQUENT_CHECK;
		3020	}
		3021	#endif
		3022
		3023	#if EV_FORK_ENABLE
		3024	void
		3025	ev_fork_start (EV_P_ ev_fork *w)
		3026	{
		3027	if (expect_false (ev_is_active (w)))
		3028	return;
		3029
		3030	EV_FREQUENT_CHECK;
		3031
		3032	ev_start (EV_A_ (W)w, ++forkcnt);
		3033	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		3034	forks [forkcnt - 1] = w;
		3035
		3036	EV_FREQUENT_CHECK;
		3037	}
		3038
		3039	void
		3040	ev_fork_stop (EV_P_ ev_fork *w)
		3041	{
		3042	clear_pending (EV_A_ (W)w);
		3043	if (expect_false (!ev_is_active (w)))
		3044	return;
		3045
		3046	EV_FREQUENT_CHECK;
		3047
		3048	{
		3049	int active = ev_active (w);
		3050
		3051	forks [active - 1] = forks [--forkcnt];
		3052	ev_active (forks [active - 1]) = active;
		3053	}
		3054
1172	ev_stop (EV_A_ (W)w);	3055	ev_stop (EV_A_ (W)w);
		3056
		3057	EV_FREQUENT_CHECK;
1173	}	3058	}
		3059	#endif
		3060
		3061	#if EV_ASYNC_ENABLE
		3062	void
		3063	ev_async_start (EV_P_ ev_async *w)
		3064	{
		3065	if (expect_false (ev_is_active (w)))
		3066	return;
		3067
		3068	evpipe_init (EV_A);
		3069
		3070	EV_FREQUENT_CHECK;
		3071
		3072	ev_start (EV_A_ (W)w, ++asynccnt);
		3073	array_needsize (ev_async *, asyncs, asyncmax, asynccnt, EMPTY2);
		3074	asyncs [asynccnt - 1] = w;
		3075
		3076	EV_FREQUENT_CHECK;
		3077	}
		3078
		3079	void
		3080	ev_async_stop (EV_P_ ev_async *w)
		3081	{
		3082	clear_pending (EV_A_ (W)w);
		3083	if (expect_false (!ev_is_active (w)))
		3084	return;
		3085
		3086	EV_FREQUENT_CHECK;
		3087
		3088	{
		3089	int active = ev_active (w);
		3090
		3091	asyncs [active - 1] = asyncs [--asynccnt];
		3092	ev_active (asyncs [active - 1]) = active;
		3093	}
		3094
		3095	ev_stop (EV_A_ (W)w);
		3096
		3097	EV_FREQUENT_CHECK;
		3098	}
		3099
		3100	void
		3101	ev_async_send (EV_P_ ev_async *w)
		3102	{
		3103	w->sent = 1;
		3104	evpipe_write (EV_A_ &gotasync);
		3105	}
		3106	#endif
1174		3107
1175	/*****************************************************************************/	3108	/*****************************************************************************/
1176		3109
1177	struct ev_once	3110	struct ev_once
1178	{	3111	{
1179	struct ev_io io;	3112	ev_io io;
1180	struct ev_timer to;	3113	ev_timer to;
1181	void (*cb)(int revents, void *arg);	3114	void (*cb)(int revents, void *arg);
1182	void *arg;	3115	void *arg;
1183	};	3116	};
1184		3117
1185	static void	3118	static void
1186	once_cb (EV_P_ struct ev_once *once, int revents)	3119	once_cb (EV_P_ struct ev_once *once, int revents)
1187	{	3120	{
1188	void (*cb)(int revents, void *arg) = once->cb;	3121	void (*cb)(int revents, void *arg) = once->cb;
1189	void *arg = once->arg;	3122	void *arg = once->arg;
1190		3123
1191	ev_io_stop (EV_A_ &once->io);	3124	ev_io_stop (EV_A_ &once->io);
1192	ev_timer_stop (EV_A_ &once->to);	3125	ev_timer_stop (EV_A_ &once->to);
1193	free (once);	3126	ev_free (once);
1194		3127
1195	cb (revents, arg);	3128	cb (revents, arg);
1196	}	3129	}
1197		3130
1198	static void	3131	static void
1199	once_cb_io (EV_P_ struct ev_io *w, int revents)	3132	once_cb_io (EV_P_ ev_io *w, int revents)
1200	{	3133	{
1201	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	3134	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io));
		3135
		3136	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->to));
1202	}	3137	}
1203		3138
1204	static void	3139	static void
1205	once_cb_to (EV_P_ struct ev_timer *w, int revents)	3140	once_cb_to (EV_P_ ev_timer *w, int revents)
1206	{	3141	{
1207	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	3142	struct ev_once *once = (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to));
		3143
		3144	once_cb (EV_A_ once, revents | ev_clear_pending (EV_A_ &once->io));
1208	}	3145	}
1209		3146
1210	void	3147	void
1211	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	3148	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1212	{	3149	{
1213	struct ev_once *once = malloc (sizeof (struct ev_once));	3150	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1214		3151
1215	if (!once)	3152	if (expect_false (!once))
		3153	{
1216	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	3154	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1217	else	3155	return;
1218	{	3156	}
		3157
1219	once->cb = cb;	3158	once->cb = cb;
1220	once->arg = arg;	3159	once->arg = arg;
1221		3160
1222	ev_watcher_init (&once->io, once_cb_io);	3161	ev_init (&once->io, once_cb_io);
1223	if (fd >= 0)	3162	if (fd >= 0)
		3163	{
		3164	ev_io_set (&once->io, fd, events);
		3165	ev_io_start (EV_A_ &once->io);
		3166	}
		3167
		3168	ev_init (&once->to, once_cb_to);
		3169	if (timeout >= 0.)
		3170	{
		3171	ev_timer_set (&once->to, timeout, 0.);
		3172	ev_timer_start (EV_A_ &once->to);
		3173	}
		3174	}
		3175
		3176	/*****************************************************************************/
		3177
		3178	#if 0
		3179	void
		3180	ev_walk (EV_P_ int types, void (*cb)(EV_P_ int type, void *w))
		3181	{
		3182	int i, j;
		3183	ev_watcher_list *wl, *wn;
		3184
		3185	if (types & (EV_IO | EV_EMBED))
		3186	for (i = 0; i < anfdmax; ++i)
		3187	for (wl = anfds [i].head; wl; )
1224	{	3188	{
1225	ev_io_set (&once->io, fd, events);	3189	wn = wl->next;
1226	ev_io_start (EV_A_ &once->io);	3190
		3191	#if EV_EMBED_ENABLE
		3192	if (ev_cb ((ev_io *)wl) == embed_io_cb)
		3193	{
		3194	if (types & EV_EMBED)
		3195	cb (EV_A_ EV_EMBED, ((char *)wl) - offsetof (struct ev_embed, io));
		3196	}
		3197	else
		3198	#endif
		3199	#if EV_USE_INOTIFY
		3200	if (ev_cb ((ev_io *)wl) == infy_cb)
		3201	;
		3202	else
		3203	#endif
		3204	if ((ev_io *)wl != &pipeev)
		3205	if (types & EV_IO)
		3206	cb (EV_A_ EV_IO, wl);
		3207
		3208	wl = wn;
1227	}	3209	}
1228		3210
1229	ev_watcher_init (&once->to, once_cb_to);	3211	if (types & (EV_TIMER | EV_STAT))
1230	if (timeout >= 0.)	3212	for (i = timercnt + HEAP0; i-- > HEAP0; )
		3213	#if EV_STAT_ENABLE
		3214	/*TODO: timer is not always active*/
		3215	if (ev_cb ((ev_timer *)ANHE_w (timers [i])) == stat_timer_cb)
1231	{	3216	{
1232	ev_timer_set (&once->to, timeout, 0.);	3217	if (types & EV_STAT)
1233	ev_timer_start (EV_A_ &once->to);	3218	cb (EV_A_ EV_STAT, ((char *)ANHE_w (timers [i])) - offsetof (struct ev_stat, timer));
1234	}	3219	}
1235	}	3220	else
1236	}	3221	#endif
		3222	if (types & EV_TIMER)
		3223	cb (EV_A_ EV_TIMER, ANHE_w (timers [i]));
1237		3224
1238	/*****************************************************************************/	3225	#if EV_PERIODIC_ENABLE
		3226	if (types & EV_PERIODIC)
		3227	for (i = periodiccnt + HEAP0; i-- > HEAP0; )
		3228	cb (EV_A_ EV_PERIODIC, ANHE_w (periodics [i]));
		3229	#endif
1239		3230
1240	#if 0	3231	#if EV_IDLE_ENABLE
		3232	if (types & EV_IDLE)
		3233	for (j = NUMPRI; i--; )
		3234	for (i = idlecnt [j]; i--; )
		3235	cb (EV_A_ EV_IDLE, idles [j][i]);
		3236	#endif
1241		3237
1242	struct ev_io wio;	3238	#if EV_FORK_ENABLE
		3239	if (types & EV_FORK)
		3240	for (i = forkcnt; i--; )
		3241	if (ev_cb (forks [i]) != embed_fork_cb)
		3242	cb (EV_A_ EV_FORK, forks [i]);
		3243	#endif
1243		3244
1244	static void	3245	#if EV_ASYNC_ENABLE
1245	sin_cb (struct ev_io *w, int revents)	3246	if (types & EV_ASYNC)
1246	{	3247	for (i = asynccnt; i--; )
1247	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	3248	cb (EV_A_ EV_ASYNC, asyncs [i]);
1248	}	3249	#endif
1249		3250
1250	static void	3251	if (types & EV_PREPARE)
1251	ocb (struct ev_timer *w, int revents)	3252	for (i = preparecnt; i--; )
1252	{	3253	#if EV_EMBED_ENABLE
1253	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	3254	if (ev_cb (prepares [i]) != embed_prepare_cb)
1254	ev_timer_stop (w);	3255	#endif
1255	ev_timer_start (w);	3256	cb (EV_A_ EV_PREPARE, prepares [i]);
1256	}
1257		3257
1258	static void	3258	if (types & EV_CHECK)
1259	scb (struct ev_signal *w, int revents)	3259	for (i = checkcnt; i--; )
1260	{	3260	cb (EV_A_ EV_CHECK, checks [i]);
1261	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1262	ev_io_stop (&wio);
1263	ev_io_start (&wio);
1264	}
1265		3261
1266	static void	3262	if (types & EV_SIGNAL)
1267	gcb (struct ev_signal *w, int revents)
1268	{
1269	fprintf (stderr, "generic %x\n", revents);
1270
1271	}
1272
1273	int main (void)
1274	{
1275	ev_init (0);
1276
1277	ev_io_init (&wio, sin_cb, 0, EV_READ);
1278	ev_io_start (&wio);
1279
1280	struct ev_timer t[10000];
1281
1282	#if 0
1283	int i;
1284	for (i = 0; i < 10000; ++i)	3263	for (i = 0; i < signalmax; ++i)
1285	{	3264	for (wl = signals [i].head; wl; )
1286	struct ev_timer *w = t + i;	3265	{
1287	ev_watcher_init (w, ocb, i);	3266	wn = wl->next;
1288	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);	3267	cb (EV_A_ EV_SIGNAL, wl);
1289	ev_timer_start (w);	3268	wl = wn;
1290	if (drand48 () < 0.5)	3269	}
1291	ev_timer_stop (w);
1292	}
1293	#endif
1294		3270
1295	struct ev_timer t1;	3271	if (types & EV_CHILD)
1296	ev_timer_init (&t1, ocb, 5, 10);	3272	for (i = EV_PID_HASHSIZE; i--; )
1297	ev_timer_start (&t1);	3273	for (wl = childs [i]; wl; )
1298		3274	{
1299	struct ev_signal sig;	3275	wn = wl->next;
1300	ev_signal_init (&sig, scb, SIGQUIT);	3276	cb (EV_A_ EV_CHILD, wl);
1301	ev_signal_start (&sig);	3277	wl = wn;
1302		3278	}
1303	struct ev_check cw;	3279	/* EV_STAT 0x00001000 /* stat data changed */
1304	ev_check_init (&cw, gcb);	3280	/* EV_EMBED 0x00010000 /* embedded event loop needs sweep */
1305	ev_check_start (&cw);
1306
1307	struct ev_idle iw;
1308	ev_idle_init (&iw, gcb);
1309	ev_idle_start (&iw);
1310
1311	ev_loop (0);
1312
1313	return 0;
1314	}	3281	}
1315
1316	#endif	3282	#endif
1317		3283
		3284	#if EV_MULTIPLICITY
		3285	#include "ev_wrap.h"
		3286	#endif
1318		3287
		3288	#ifdef __cplusplus
		3289	}
		3290	#endif
1319		3291
1320

Diff Legend

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