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Comparing libev/ev.c (file contents):
Revision 1.26 by root, Wed Oct 31 21:50:15 2007 UTC vs.
Revision 1.171 by root, Sun Dec 9 02:12:43 2007 UTC

1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
…		…
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
		40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
		107	#endif
		108
30	#include <math.h>	109	#include <math.h>
31	#include <stdlib.h>	110	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	111	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	112	#include <stddef.h>
36		113
37	#include <stdio.h>	114	#include <stdio.h>
38		115
39	#include <assert.h>	116	#include <assert.h>
40	#include <errno.h>	117	#include <errno.h>
41	#include <sys/types.h>	118	#include <sys/types.h>
42	#include <sys/wait.h>
43	#include <sys/time.h>
44	#include <time.h>	119	#include <time.h>
45		120
46	#ifndef HAVE_MONOTONIC	121	#include <signal.h>
47	# ifdef CLOCK_MONOTONIC	122
48	# define HAVE_MONOTONIC 1	123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
		129	#ifndef _WIN32
		130	# include <sys/time.h>
		131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
49	# endif	138	# endif
50	#endif	139	#endif
51		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
52	#ifndef HAVE_SELECT	151	#ifndef EV_USE_SELECT
53	# define HAVE_SELECT 1	152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
54	#endif	160	# endif
		161	#endif
55		162
56	#ifndef HAVE_EPOLL	163	#ifndef EV_USE_EPOLL
57	# define HAVE_EPOLL 0	164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
58	#endif	184	# endif
		185	#endif
59		186
60	#ifndef HAVE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
62	#endif	192	# endif
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
		219	/**/
63		220
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
67		224
68	#include "ev.h"	225	#if __GNUC__ >= 3
		226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define noinline __attribute__ ((noinline))
		228	#else
		229	# define expect(expr,value) (expr)
		230	# define noinline
		231	# if __STDC_VERSION__ < 199901L
		232	# define inline
		233	# endif
		234	#endif
69		235
		236	#define expect_false(expr) expect ((expr) != 0, 0)
		237	#define expect_true(expr) expect ((expr) != 0, 1)
		238	#define inline_size static inline
		239
		240	#if EV_MINIMAL
		241	# define inline_speed static noinline
		242	#else
		243	# define inline_speed static inline
		244	#endif
		245
		246	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		247	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		248
		249	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		250	#define EMPTY2(a,b) /* used to suppress some warnings */
		251
70	typedef struct ev_watcher *W;	252	typedef ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	253	typedef ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	254	typedef ev_watcher_time *WT;
73		255
74	static ev_tstamp now, diff; /* monotonic clock */	256	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		257
		258	#ifdef _WIN32
		259	# include "ev_win32.c"
		260	#endif
		261
		262	/*****************************************************************************/
		263
		264	static void (*syserr_cb)(const char *msg);
		265
		266	void
		267	ev_set_syserr_cb (void (*cb)(const char *msg))
		268	{
		269	syserr_cb = cb;
		270	}
		271
		272	static void noinline
		273	syserr (const char *msg)
		274	{
		275	if (!msg)
		276	msg = "(libev) system error";
		277
		278	if (syserr_cb)
		279	syserr_cb (msg);
		280	else
		281	{
		282	perror (msg);
		283	abort ();
		284	}
		285	}
		286
		287	static void *(*alloc)(void *ptr, long size);
		288
		289	void
		290	ev_set_allocator (void *(*cb)(void *ptr, long size))
		291	{
		292	alloc = cb;
		293	}
		294
		295	inline_speed void *
		296	ev_realloc (void *ptr, long size)
		297	{
		298	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		299
		300	if (!ptr && size)
		301	{
		302	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		303	abort ();
		304	}
		305
		306	return ptr;
		307	}
		308
		309	#define ev_malloc(size) ev_realloc (0, (size))
		310	#define ev_free(ptr) ev_realloc ((ptr), 0)
		311
		312	/*****************************************************************************/
		313
		314	typedef struct
		315	{
		316	WL head;
		317	unsigned char events;
		318	unsigned char reify;
		319	#if EV_SELECT_IS_WINSOCKET
		320	SOCKET handle;
		321	#endif
		322	} ANFD;
		323
		324	typedef struct
		325	{
		326	W w;
		327	int events;
		328	} ANPENDING;
		329
		330	#if EV_USE_INOTIFY
		331	typedef struct
		332	{
		333	WL head;
		334	} ANFS;
		335	#endif
		336
		337	#if EV_MULTIPLICITY
		338
		339	struct ev_loop
		340	{
		341	ev_tstamp ev_rt_now;
		342	#define ev_rt_now ((loop)->ev_rt_now)
		343	#define VAR(name,decl) decl;
		344	#include "ev_vars.h"
		345	#undef VAR
		346	};
		347	#include "ev_wrap.h"
		348
		349	static struct ev_loop default_loop_struct;
		350	struct ev_loop *ev_default_loop_ptr;
		351
		352	#else
		353
75	ev_tstamp ev_now;	354	ev_tstamp ev_rt_now;
76	int ev_method;	355	#define VAR(name,decl) static decl;
		356	#include "ev_vars.h"
		357	#undef VAR
77		358
78	static int have_monotonic; /* runtime */	359	static int ev_default_loop_ptr;
79		360
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	361	#endif
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		362
84	/*****************************************************************************/	363	/*****************************************************************************/
85		364
86	ev_tstamp	365	ev_tstamp
87	ev_time (void)	366	ev_time (void)
88	{	367	{
89	#if HAVE_REALTIME	368	#if EV_USE_REALTIME
90	struct timespec ts;	369	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	370	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	371	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	372	#else
94	struct timeval tv;	373	struct timeval tv;
95	gettimeofday (&tv, 0);	374	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	375	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	376	#endif
98	}	377	}
99		378
100	static ev_tstamp	379	ev_tstamp inline_size
101	get_clock (void)	380	get_clock (void)
102	{	381	{
103	#if HAVE_MONOTONIC	382	#if EV_USE_MONOTONIC
104	if (have_monotonic)	383	if (expect_true (have_monotonic))
105	{	384	{
106	struct timespec ts;	385	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	386	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	387	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	388	}
110	#endif	389	#endif
111		390
112	return ev_time ();	391	return ev_time ();
113	}	392	}
114		393
		394	#if EV_MULTIPLICITY
		395	ev_tstamp
		396	ev_now (EV_P)
		397	{
		398	return ev_rt_now;
		399	}
		400	#endif
		401
		402	int inline_size
		403	array_nextsize (int elem, int cur, int cnt)
		404	{
		405	int ncur = cur + 1;
		406
		407	do
		408	ncur <<= 1;
		409	while (cnt > ncur);
		410
		411	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		412	if (elem * ncur > 4096)
		413	{
		414	ncur *= elem;
		415	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		416	ncur = ncur - sizeof (void *) * 4;
		417	ncur /= elem;
		418	}
		419
		420	return ncur;
		421	}
		422
		423	static noinline void *
		424	array_realloc (int elem, void *base, int *cur, int cnt)
		425	{
		426	*cur = array_nextsize (elem, *cur, cnt);
		427	return ev_realloc (base, elem * *cur);
		428	}
		429
115	#define array_needsize(base,cur,cnt,init) \	430	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	431	if (expect_false ((cnt) > (cur))) \
117	{ \	432	{ \
118	int newcnt = cur; \	433	int ocur_ = (cur); \
119	do \	434	(base) = (type *)array_realloc \
120	{ \	435	(sizeof (type), (base), &(cur), (cnt)); \
121	newcnt = (newcnt << 1) | 4 & ~3; \	436	init ((base) + (ocur_), (cur) - ocur_); \
122	} \	437	}
123	while ((cnt) > newcnt); \	438
		439	#if 0
		440	#define array_slim(type,stem) \
		441	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
124	\	442	{ \
125	base = realloc (base, sizeof (*base) * (newcnt)); \	443	stem ## max = array_roundsize (stem ## cnt >> 1); \
126	init (base + cur, newcnt - cur); \	444	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
127	cur = newcnt; \	445	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
128	}	446	}
		447	#endif
		448
		449	#define array_free(stem, idx) \
		450	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		451
130	/*****************************************************************************/	452	/*****************************************************************************/
131		453
		454	void noinline
		455	ev_feed_event (EV_P_ void *w, int revents)
		456	{
		457	W w_ = (W)w;
		458	int pri = ABSPRI (w_);
		459
		460	if (expect_false (w_->pending))
		461	pendings [pri][w_->pending - 1].events |= revents;
		462	else
		463	{
		464	w_->pending = ++pendingcnt [pri];
		465	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		466	pendings [pri][w_->pending - 1].w = w_;
		467	pendings [pri][w_->pending - 1].events = revents;
		468	}
		469	}
		470
		471	void inline_size
		472	queue_events (EV_P_ W *events, int eventcnt, int type)
		473	{
		474	int i;
		475
		476	for (i = 0; i < eventcnt; ++i)
		477	ev_feed_event (EV_A_ events [i], type);
		478	}
		479
		480	/*****************************************************************************/
		481
		482	void inline_size
		483	anfds_init (ANFD *base, int count)
		484	{
		485	while (count--)
		486	{
		487	base->head = 0;
		488	base->events = EV_NONE;
		489	base->reify = 0;
		490
		491	++base;
		492	}
		493	}
		494
		495	void inline_speed
		496	fd_event (EV_P_ int fd, int revents)
		497	{
		498	ANFD *anfd = anfds + fd;
		499	ev_io *w;
		500
		501	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		502	{
		503	int ev = w->events & revents;
		504
		505	if (ev)
		506	ev_feed_event (EV_A_ (W)w, ev);
		507	}
		508	}
		509
		510	void
		511	ev_feed_fd_event (EV_P_ int fd, int revents)
		512	{
		513	if (fd >= 0 && fd < anfdmax)
		514	fd_event (EV_A_ fd, revents);
		515	}
		516
		517	void inline_size
		518	fd_reify (EV_P)
		519	{
		520	int i;
		521
		522	for (i = 0; i < fdchangecnt; ++i)
		523	{
		524	int fd = fdchanges [i];
		525	ANFD *anfd = anfds + fd;
		526	ev_io *w;
		527
		528	int events = 0;
		529
		530	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		531	events |= w->events;
		532
		533	#if EV_SELECT_IS_WINSOCKET
		534	if (events)
		535	{
		536	unsigned long argp;
		537	anfd->handle = _get_osfhandle (fd);
		538	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		539	}
		540	#endif
		541
		542	anfd->reify = 0;
		543
		544	backend_modify (EV_A_ fd, anfd->events, events);
		545	anfd->events = events;
		546	}
		547
		548	fdchangecnt = 0;
		549	}
		550
		551	void inline_size
		552	fd_change (EV_P_ int fd)
		553	{
		554	if (expect_false (anfds [fd].reify))
		555	return;
		556
		557	anfds [fd].reify = 1;
		558
		559	++fdchangecnt;
		560	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
		561	fdchanges [fdchangecnt - 1] = fd;
		562	}
		563
		564	void inline_speed
		565	fd_kill (EV_P_ int fd)
		566	{
		567	ev_io *w;
		568
		569	while ((w = (ev_io *)anfds [fd].head))
		570	{
		571	ev_io_stop (EV_A_ w);
		572	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		573	}
		574	}
		575
		576	int inline_size
		577	fd_valid (int fd)
		578	{
		579	#ifdef _WIN32
		580	return _get_osfhandle (fd) != -1;
		581	#else
		582	return fcntl (fd, F_GETFD) != -1;
		583	#endif
		584	}
		585
		586	/* called on EBADF to verify fds */
		587	static void noinline
		588	fd_ebadf (EV_P)
		589	{
		590	int fd;
		591
		592	for (fd = 0; fd < anfdmax; ++fd)
		593	if (anfds [fd].events)
		594	if (!fd_valid (fd) == -1 && errno == EBADF)
		595	fd_kill (EV_A_ fd);
		596	}
		597
		598	/* called on ENOMEM in select/poll to kill some fds and retry */
		599	static void noinline
		600	fd_enomem (EV_P)
		601	{
		602	int fd;
		603
		604	for (fd = anfdmax; fd--; )
		605	if (anfds [fd].events)
		606	{
		607	fd_kill (EV_A_ fd);
		608	return;
		609	}
		610	}
		611
		612	/* usually called after fork if backend needs to re-arm all fds from scratch */
		613	static void noinline
		614	fd_rearm_all (EV_P)
		615	{
		616	int fd;
		617
		618	for (fd = 0; fd < anfdmax; ++fd)
		619	if (anfds [fd].events)
		620	{
		621	anfds [fd].events = 0;
		622	fd_change (EV_A_ fd);
		623	}
		624	}
		625
		626	/*****************************************************************************/
		627
		628	void inline_speed
		629	upheap (WT *heap, int k)
		630	{
		631	WT w = heap [k];
		632
		633	while (k && heap [k >> 1]->at > w->at)
		634	{
		635	heap [k] = heap [k >> 1];
		636	((W)heap [k])->active = k + 1;
		637	k >>= 1;
		638	}
		639
		640	heap [k] = w;
		641	((W)heap [k])->active = k + 1;
		642
		643	}
		644
		645	void inline_speed
		646	downheap (WT *heap, int N, int k)
		647	{
		648	WT w = heap [k];
		649
		650	while (k < (N >> 1))
		651	{
		652	int j = k << 1;
		653
		654	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
		655	++j;
		656
		657	if (w->at <= heap [j]->at)
		658	break;
		659
		660	heap [k] = heap [j];
		661	((W)heap [k])->active = k + 1;
		662	k = j;
		663	}
		664
		665	heap [k] = w;
		666	((W)heap [k])->active = k + 1;
		667	}
		668
		669	void inline_size
		670	adjustheap (WT *heap, int N, int k)
		671	{
		672	upheap (heap, k);
		673	downheap (heap, N, k);
		674	}
		675
		676	/*****************************************************************************/
		677
132	typedef struct	678	typedef struct
133	{	679	{
134	struct ev_io *head;	680	WL head;
135	unsigned char wev, rev; /* want, received event set */
136	} ANFD;
137
138	static ANFD *anfds;
139	static int anfdmax;
140
141	static int *fdchanges;
142	static int fdchangemax, fdchangecnt;
143
144	static void
145	anfds_init (ANFD *base, int count)
146	{
147	while (count--)
148	{
149	base->head = 0;
150	base->wev = base->rev = EV_NONE;
151	++base;
152	}
153	}
154
155	typedef struct
156	{
157	W w;
158	int events;
159	} ANPENDING;
160
161	static ANPENDING *pendings;
162	static int pendingmax, pendingcnt;
163
164	static void
165	event (W w, int events)
166	{
167	if (w->active)
168	{
169	w->pending = ++pendingcnt;
170	array_needsize (pendings, pendingmax, pendingcnt, );
171	pendings [pendingcnt - 1].w = w;
172	pendings [pendingcnt - 1].events = events;
173	}
174	}
175
176	static void
177	fd_event (int fd, int events)
178	{
179	ANFD *anfd = anfds + fd;
180	struct ev_io *w;
181
182	for (w = anfd->head; w; w = w->next)
183	{
184	int ev = w->events & events;
185
186	if (ev)
187	event ((W)w, ev);
188	}
189	}
190
191	static void
192	queue_events (W *events, int eventcnt, int type)
193	{
194	int i;
195
196	for (i = 0; i < eventcnt; ++i)
197	event (events [i], type);
198	}
199
200	/* called on EBADF to verify fds */
201	static void
202	fd_recheck (void)
203	{
204	int fd;
205
206	for (fd = 0; fd < anfdmax; ++fd)
207	if (anfds [fd].wev)
208	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
209	while (anfds [fd].head)
210	{
211	event ((W)anfds [fd].head, EV_ERROR);
212	evio_stop (anfds [fd].head);
213	}
214	}
215
216	/*****************************************************************************/
217
218	static struct ev_timer **timers;
219	static int timermax, timercnt;
220
221	static struct ev_periodic **periodics;
222	static int periodicmax, periodiccnt;
223
224	static void
225	upheap (WT *timers, int k)
226	{
227	WT w = timers [k];
228
229	while (k && timers [k >> 1]->at > w->at)
230	{
231	timers [k] = timers [k >> 1];
232	timers [k]->active = k + 1;
233	k >>= 1;
234	}
235
236	timers [k] = w;
237	timers [k]->active = k + 1;
238
239	}
240
241	static void
242	downheap (WT *timers, int N, int k)
243	{
244	WT w = timers [k];
245
246	while (k < (N >> 1))
247	{
248	int j = k << 1;
249
250	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
251	++j;
252
253	if (w->at <= timers [j]->at)
254	break;
255
256	timers [k] = timers [j];
257	timers [k]->active = k + 1;
258	k = j;
259	}
260
261	timers [k] = w;
262	timers [k]->active = k + 1;
263	}
264
265	/*****************************************************************************/
266
267	typedef struct
268	{
269	struct ev_signal *head;
270	sig_atomic_t gotsig;	681	sig_atomic_t volatile gotsig;
271	} ANSIG;	682	} ANSIG;
272		683
273	static ANSIG *signals;	684	static ANSIG *signals;
274	static int signalmax;	685	static int signalmax;
275		686
276	static int sigpipe [2];	687	static int sigpipe [2];
277	static sig_atomic_t gotsig;	688	static sig_atomic_t volatile gotsig;
278	static struct ev_io sigev;	689	static ev_io sigev;
279		690
280	static void	691	void inline_size
281	signals_init (ANSIG *base, int count)	692	signals_init (ANSIG *base, int count)
282	{	693	{
283	while (count--)	694	while (count--)
284	{	695	{
285	base->head = 0;	696	base->head = 0;
286	base->gotsig = 0;	697	base->gotsig = 0;
		698
287	++base;	699	++base;
288	}	700	}
289	}	701	}
290		702
291	static void	703	static void
292	sighandler (int signum)	704	sighandler (int signum)
293	{	705	{
		706	#if _WIN32
		707	signal (signum, sighandler);
		708	#endif
		709
294	signals [signum - 1].gotsig = 1;	710	signals [signum - 1].gotsig = 1;
295		711
296	if (!gotsig)	712	if (!gotsig)
297	{	713	{
		714	int old_errno = errno;
298	gotsig = 1;	715	gotsig = 1;
299	write (sigpipe [1], &gotsig, 1);	716	write (sigpipe [1], &signum, 1);
		717	errno = old_errno;
300	}	718	}
		719	}
		720
		721	void noinline
		722	ev_feed_signal_event (EV_P_ int signum)
		723	{
		724	WL w;
		725
		726	#if EV_MULTIPLICITY
		727	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		728	#endif
		729
		730	--signum;
		731
		732	if (signum < 0 || signum >= signalmax)
		733	return;
		734
		735	signals [signum].gotsig = 0;
		736
		737	for (w = signals [signum].head; w; w = w->next)
		738	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
301	}	739	}
302		740
303	static void	741	static void
304	sigcb (struct ev_io *iow, int revents)	742	sigcb (EV_P_ ev_io *iow, int revents)
305	{	743	{
306	struct ev_signal *w;
307	int sig;	744	int signum;
308		745
		746	read (sigpipe [0], &revents, 1);
309	gotsig = 0;	747	gotsig = 0;
310	read (sigpipe [0], &revents, 1);
311		748
312	for (sig = signalmax; sig--; )	749	for (signum = signalmax; signum--; )
313	if (signals [sig].gotsig)	750	if (signals [signum].gotsig)
		751	ev_feed_signal_event (EV_A_ signum + 1);
		752	}
		753
		754	void inline_speed
		755	fd_intern (int fd)
		756	{
		757	#ifdef _WIN32
		758	int arg = 1;
		759	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		760	#else
		761	fcntl (fd, F_SETFD, FD_CLOEXEC);
		762	fcntl (fd, F_SETFL, O_NONBLOCK);
		763	#endif
		764	}
		765
		766	static void noinline
		767	siginit (EV_P)
		768	{
		769	fd_intern (sigpipe [0]);
		770	fd_intern (sigpipe [1]);
		771
		772	ev_io_set (&sigev, sigpipe [0], EV_READ);
		773	ev_io_start (EV_A_ &sigev);
		774	ev_unref (EV_A); /* child watcher should not keep loop alive */
		775	}
		776
		777	/*****************************************************************************/
		778
		779	static ev_child *childs [EV_PID_HASHSIZE];
		780
		781	#ifndef _WIN32
		782
		783	static ev_signal childev;
		784
		785	void inline_speed
		786	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		787	{
		788	ev_child *w;
		789
		790	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		791	if (w->pid == pid || !w->pid)
314	{	792	{
315	signals [sig].gotsig = 0;	793	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
316		794	w->rpid = pid;
317	for (w = signals [sig].head; w; w = w->next)	795	w->rstatus = status;
318	event ((W)w, EV_SIGNAL);	796	ev_feed_event (EV_A_ (W)w, EV_CHILD);
319	}	797	}
320	}	798	}
321
322	static void
323	siginit (void)
324	{
325	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
326	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
327
328	/* rather than sort out wether we really need nb, set it */
329	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
330	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
331
332	evio_set (&sigev, sigpipe [0], EV_READ);
333	evio_start (&sigev);
334	}
335
336	/*****************************************************************************/
337
338	static struct ev_idle **idles;
339	static int idlemax, idlecnt;
340
341	static struct ev_prepare **prepares;
342	static int preparemax, preparecnt;
343
344	static struct ev_check **checks;
345	static int checkmax, checkcnt;
346
347	/*****************************************************************************/
348
349	static struct ev_child *childs [PID_HASHSIZE];
350	static struct ev_signal childev;
351		799
352	#ifndef WCONTINUED	800	#ifndef WCONTINUED
353	# define WCONTINUED 0	801	# define WCONTINUED 0
354	#endif	802	#endif
355		803
356	static void	804	static void
357	childcb (struct ev_signal *sw, int revents)	805	childcb (EV_P_ ev_signal *sw, int revents)
358	{	806	{
359	struct ev_child *w;
360	int pid, status;	807	int pid, status;
361		808
		809	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
362	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	810	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
363	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	811	if (!WCONTINUED
364	if (w->pid == pid || w->pid == -1)	812	|| errno != EINVAL
365	{	813	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
366	w->status = status;	814	return;
367	event ((W)w, EV_CHILD);	815
368	}	816	/* make sure we are called again until all childs have been reaped */
		817	/* we need to do it this way so that the callback gets called before we continue */
		818	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		819
		820	child_reap (EV_A_ sw, pid, pid, status);
		821	if (EV_PID_HASHSIZE > 1)
		822	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
369	}	823	}
		824
		825	#endif
370		826
371	/*****************************************************************************/	827	/*****************************************************************************/
372		828
		829	#if EV_USE_PORT
		830	# include "ev_port.c"
		831	#endif
		832	#if EV_USE_KQUEUE
		833	# include "ev_kqueue.c"
		834	#endif
373	#if HAVE_EPOLL	835	#if EV_USE_EPOLL
374	# include "ev_epoll.c"	836	# include "ev_epoll.c"
375	#endif	837	#endif
		838	#if EV_USE_POLL
		839	# include "ev_poll.c"
		840	#endif
376	#if HAVE_SELECT	841	#if EV_USE_SELECT
377	# include "ev_select.c"	842	# include "ev_select.c"
378	#endif	843	#endif
379		844
380	int	845	int
381	ev_version_major (void)	846	ev_version_major (void)
…		…
387	ev_version_minor (void)	852	ev_version_minor (void)
388	{	853	{
389	return EV_VERSION_MINOR;	854	return EV_VERSION_MINOR;
390	}	855	}
391		856
392	int ev_init (int flags)	857	/* return true if we are running with elevated privileges and should ignore env variables */
		858	int inline_size
		859	enable_secure (void)
393	{	860	{
394	if (!ev_method)	861	#ifdef _WIN32
		862	return 0;
		863	#else
		864	return getuid () != geteuid ()
		865	|| getgid () != getegid ();
		866	#endif
		867	}
		868
		869	unsigned int
		870	ev_supported_backends (void)
		871	{
		872	unsigned int flags = 0;
		873
		874	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		875	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		876	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		877	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		878	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		879
		880	return flags;
		881	}
		882
		883	unsigned int
		884	ev_recommended_backends (void)
		885	{
		886	unsigned int flags = ev_supported_backends ();
		887
		888	#ifndef __NetBSD__
		889	/* kqueue is borked on everything but netbsd apparently */
		890	/* it usually doesn't work correctly on anything but sockets and pipes */
		891	flags &= ~EVBACKEND_KQUEUE;
		892	#endif
		893	#ifdef __APPLE__
		894	// flags &= ~EVBACKEND_KQUEUE; for documentation
		895	flags &= ~EVBACKEND_POLL;
		896	#endif
		897
		898	return flags;
		899	}
		900
		901	unsigned int
		902	ev_embeddable_backends (void)
		903	{
		904	return EVBACKEND_EPOLL
		905	| EVBACKEND_KQUEUE
		906	| EVBACKEND_PORT;
		907	}
		908
		909	unsigned int
		910	ev_backend (EV_P)
		911	{
		912	return backend;
		913	}
		914
		915	unsigned int
		916	ev_loop_count (EV_P)
		917	{
		918	return loop_count;
		919	}
		920
		921	static void noinline
		922	loop_init (EV_P_ unsigned int flags)
		923	{
		924	if (!backend)
395	{	925	{
396	#if HAVE_MONOTONIC	926	#if EV_USE_MONOTONIC
397	{	927	{
398	struct timespec ts;	928	struct timespec ts;
399	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	929	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
400	have_monotonic = 1;	930	have_monotonic = 1;
401	}	931	}
402	#endif	932	#endif
403		933
404	ev_now = ev_time ();	934	ev_rt_now = ev_time ();
405	now = get_clock ();	935	mn_now = get_clock ();
		936	now_floor = mn_now;
406	diff = ev_now - now;	937	rtmn_diff = ev_rt_now - mn_now;
407		938
		939	/* pid check not overridable via env */
		940	#ifndef _WIN32
		941	if (flags & EVFLAG_FORKCHECK)
		942	curpid = getpid ();
		943	#endif
		944
		945	if (!(flags & EVFLAG_NOENV)
		946	&& !enable_secure ()
		947	&& getenv ("LIBEV_FLAGS"))
		948	flags = atoi (getenv ("LIBEV_FLAGS"));
		949
		950	if (!(flags & 0x0000ffffUL))
		951	flags |= ev_recommended_backends ();
		952
		953	backend = 0;
		954	backend_fd = -1;
		955	#if EV_USE_INOTIFY
		956	fs_fd = -2;
		957	#endif
		958
		959	#if EV_USE_PORT
		960	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		961	#endif
		962	#if EV_USE_KQUEUE
		963	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		964	#endif
		965	#if EV_USE_EPOLL
		966	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		967	#endif
		968	#if EV_USE_POLL
		969	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
		970	#endif
		971	#if EV_USE_SELECT
		972	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
		973	#endif
		974
		975	ev_init (&sigev, sigcb);
		976	ev_set_priority (&sigev, EV_MAXPRI);
		977	}
		978	}
		979
		980	static void noinline
		981	loop_destroy (EV_P)
		982	{
		983	int i;
		984
		985	#if EV_USE_INOTIFY
		986	if (fs_fd >= 0)
		987	close (fs_fd);
		988	#endif
		989
		990	if (backend_fd >= 0)
		991	close (backend_fd);
		992
		993	#if EV_USE_PORT
		994	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		995	#endif
		996	#if EV_USE_KQUEUE
		997	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		998	#endif
		999	#if EV_USE_EPOLL
		1000	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1001	#endif
		1002	#if EV_USE_POLL
		1003	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1004	#endif
		1005	#if EV_USE_SELECT
		1006	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1007	#endif
		1008
		1009	for (i = NUMPRI; i--; )
		1010	{
		1011	array_free (pending, [i]);
		1012	#if EV_IDLE_ENABLE
		1013	array_free (idle, [i]);
		1014	#endif
		1015	}
		1016
		1017	/* have to use the microsoft-never-gets-it-right macro */
		1018	array_free (fdchange, EMPTY);
		1019	array_free (timer, EMPTY);
		1020	#if EV_PERIODIC_ENABLE
		1021	array_free (periodic, EMPTY);
		1022	#endif
		1023	array_free (prepare, EMPTY);
		1024	array_free (check, EMPTY);
		1025
		1026	backend = 0;
		1027	}
		1028
		1029	void inline_size infy_fork (EV_P);
		1030
		1031	void inline_size
		1032	loop_fork (EV_P)
		1033	{
		1034	#if EV_USE_PORT
		1035	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1036	#endif
		1037	#if EV_USE_KQUEUE
		1038	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1039	#endif
		1040	#if EV_USE_EPOLL
		1041	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1042	#endif
		1043	#if EV_USE_INOTIFY
		1044	infy_fork (EV_A);
		1045	#endif
		1046
		1047	if (ev_is_active (&sigev))
		1048	{
		1049	/* default loop */
		1050
		1051	ev_ref (EV_A);
		1052	ev_io_stop (EV_A_ &sigev);
		1053	close (sigpipe [0]);
		1054	close (sigpipe [1]);
		1055
		1056	while (pipe (sigpipe))
		1057	syserr ("(libev) error creating pipe");
		1058
		1059	siginit (EV_A);
		1060	}
		1061
		1062	postfork = 0;
		1063	}
		1064
		1065	#if EV_MULTIPLICITY
		1066	struct ev_loop *
		1067	ev_loop_new (unsigned int flags)
		1068	{
		1069	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1070
		1071	memset (loop, 0, sizeof (struct ev_loop));
		1072
		1073	loop_init (EV_A_ flags);
		1074
		1075	if (ev_backend (EV_A))
		1076	return loop;
		1077
		1078	return 0;
		1079	}
		1080
		1081	void
		1082	ev_loop_destroy (EV_P)
		1083	{
		1084	loop_destroy (EV_A);
		1085	ev_free (loop);
		1086	}
		1087
		1088	void
		1089	ev_loop_fork (EV_P)
		1090	{
		1091	postfork = 1;
		1092	}
		1093
		1094	#endif
		1095
		1096	#if EV_MULTIPLICITY
		1097	struct ev_loop *
		1098	ev_default_loop_init (unsigned int flags)
		1099	#else
		1100	int
		1101	ev_default_loop (unsigned int flags)
		1102	#endif
		1103	{
		1104	if (sigpipe [0] == sigpipe [1])
408	if (pipe (sigpipe))	1105	if (pipe (sigpipe))
409	return 0;	1106	return 0;
410		1107
411	ev_method = EVMETHOD_NONE;	1108	if (!ev_default_loop_ptr)
412	#if HAVE_EPOLL	1109	{
413	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	1110	#if EV_MULTIPLICITY
		1111	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1112	#else
		1113	ev_default_loop_ptr = 1;
414	#endif	1114	#endif
415	#if HAVE_SELECT
416	if (ev_method == EVMETHOD_NONE) select_init (flags);
417	#endif
418		1115
419	if (ev_method)	1116	loop_init (EV_A_ flags);
		1117
		1118	if (ev_backend (EV_A))
420	{	1119	{
421	evw_init (&sigev, sigcb);
422	siginit ();	1120	siginit (EV_A);
423		1121
		1122	#ifndef _WIN32
424	evsignal_init (&childev, childcb, SIGCHLD);	1123	ev_signal_init (&childev, childcb, SIGCHLD);
		1124	ev_set_priority (&childev, EV_MAXPRI);
425	evsignal_start (&childev);	1125	ev_signal_start (EV_A_ &childev);
		1126	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1127	#endif
426	}	1128	}
		1129	else
		1130	ev_default_loop_ptr = 0;
427	}	1131	}
428		1132
429	return ev_method;	1133	return ev_default_loop_ptr;
		1134	}
		1135
		1136	void
		1137	ev_default_destroy (void)
		1138	{
		1139	#if EV_MULTIPLICITY
		1140	struct ev_loop *loop = ev_default_loop_ptr;
		1141	#endif
		1142
		1143	#ifndef _WIN32
		1144	ev_ref (EV_A); /* child watcher */
		1145	ev_signal_stop (EV_A_ &childev);
		1146	#endif
		1147
		1148	ev_ref (EV_A); /* signal watcher */
		1149	ev_io_stop (EV_A_ &sigev);
		1150
		1151	close (sigpipe [0]); sigpipe [0] = 0;
		1152	close (sigpipe [1]); sigpipe [1] = 0;
		1153
		1154	loop_destroy (EV_A);
		1155	}
		1156
		1157	void
		1158	ev_default_fork (void)
		1159	{
		1160	#if EV_MULTIPLICITY
		1161	struct ev_loop *loop = ev_default_loop_ptr;
		1162	#endif
		1163
		1164	if (backend)
		1165	postfork = 1;
430	}	1166	}
431		1167
432	/*****************************************************************************/	1168	/*****************************************************************************/
433		1169
434	void	1170	void
435	ev_prefork (void)	1171	ev_invoke (EV_P_ void *w, int revents)
436	{	1172	{
437	/* nop */	1173	EV_CB_INVOKE ((W)w, revents);
438	}	1174	}
439		1175
440	void	1176	void inline_speed
441	ev_postfork_parent (void)	1177	call_pending (EV_P)
442	{	1178	{
443	/* nop */
444	}
445
446	void
447	ev_postfork_child (void)
448	{
449	#if HAVE_EPOLL
450	if (ev_method == EVMETHOD_EPOLL)
451	epoll_postfork_child ();
452	#endif
453
454	evio_stop (&sigev);
455	close (sigpipe [0]);
456	close (sigpipe [1]);
457	pipe (sigpipe);
458	siginit ();
459	}
460
461	/*****************************************************************************/
462
463	static void
464	fd_reify (void)
465	{
466	int i;	1179	int pri;
467		1180
468	for (i = 0; i < fdchangecnt; ++i)	1181	for (pri = NUMPRI; pri--; )
		1182	while (pendingcnt [pri])
469	{	1183	{
470	int fd = fdchanges [i];	1184	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
471	ANFD *anfd = anfds + fd;
472	struct ev_io *w;
473		1185
474	int wev = 0;	1186	if (expect_true (p->w))
475
476	for (w = anfd->head; w; w = w->next)
477	wev |= w->events;
478
479	if (anfd->wev != wev)
480	{	1187	{
481	method_modify (fd, anfd->wev, wev);	1188	/*assert (("non-pending watcher on pending list", p->w->pending));*/
482	anfd->wev = wev;
483	}
484	}
485		1189
486	fdchangecnt = 0;
487	}
488
489	static void
490	call_pending (void)
491	{
492	while (pendingcnt)
493	{
494	ANPENDING *p = pendings + --pendingcnt;
495
496	if (p->w)
497	{
498	p->w->pending = 0;	1190	p->w->pending = 0;
499	p->w->cb (p->w, p->events);	1191	EV_CB_INVOKE (p->w, p->events);
500	}	1192	}
501	}	1193	}
502	}	1194	}
503		1195
504	static void	1196	void inline_size
505	timers_reify (void)	1197	timers_reify (EV_P)
506	{	1198	{
507	while (timercnt && timers [0]->at <= now)	1199	while (timercnt && ((WT)timers [0])->at <= mn_now)
508	{	1200	{
509	struct ev_timer *w = timers [0];	1201	ev_timer *w = timers [0];
510		1202
511	event ((W)w, EV_TIMEOUT);	1203	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
512		1204
513	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
514	if (w->repeat)	1206	if (w->repeat)
515	{	1207	{
		1208	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1209
516	w->at = now + w->repeat;	1210	((WT)w)->at += w->repeat;
517	assert (("timer timeout in the past, negative repeat?", w->at > now));	1211	if (((WT)w)->at < mn_now)
		1212	((WT)w)->at = mn_now;
		1213
518	downheap ((WT *)timers, timercnt, 0);	1214	downheap ((WT *)timers, timercnt, 0);
519	}	1215	}
520	else	1216	else
521	evtimer_stop (w); /* nonrepeating: stop timer */	1217	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
522	}
523	}
524		1218
525	static void	1219	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1220	}
		1221	}
		1222
		1223	#if EV_PERIODIC_ENABLE
		1224	void inline_size
526	periodics_reify (void)	1225	periodics_reify (EV_P)
527	{	1226	{
528	while (periodiccnt && periodics [0]->at <= ev_now)	1227	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
529	{	1228	{
530	struct ev_periodic *w = periodics [0];	1229	ev_periodic *w = periodics [0];
		1230
		1231	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
531		1232
532	/* first reschedule or stop timer */	1233	/* first reschedule or stop timer */
533	if (w->interval)	1234	if (w->reschedule_cb)
534	{	1235	{
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1237	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1238	downheap ((WT *)periodics, periodiccnt, 0);
		1239	}
		1240	else if (w->interval)
		1241	{
535	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1242	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
536	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1243	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
537	downheap ((WT *)periodics, periodiccnt, 0);	1244	downheap ((WT *)periodics, periodiccnt, 0);
538	}	1245	}
539	else	1246	else
540	evperiodic_stop (w); /* nonrepeating: stop timer */	1247	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
541		1248
542	event ((W)w, EV_TIMEOUT);	1249	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
543	}	1250	}
544	}	1251	}
545		1252
546	static void	1253	static void noinline
547	periodics_reschedule (ev_tstamp diff)	1254	periodics_reschedule (EV_P)
548	{	1255	{
549	int i;	1256	int i;
550		1257
551	/* adjust periodics after time jump */	1258	/* adjust periodics after time jump */
552	for (i = 0; i < periodiccnt; ++i)	1259	for (i = 0; i < periodiccnt; ++i)
553	{	1260	{
554	struct ev_periodic *w = periodics [i];	1261	ev_periodic *w = periodics [i];
555		1262
		1263	if (w->reschedule_cb)
		1264	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
556	if (w->interval)	1265	else if (w->interval)
		1266	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1267	}
		1268
		1269	/* now rebuild the heap */
		1270	for (i = periodiccnt >> 1; i--; )
		1271	downheap ((WT *)periodics, periodiccnt, i);
		1272	}
		1273	#endif
		1274
		1275	#if EV_IDLE_ENABLE
		1276	void inline_size
		1277	idle_reify (EV_P)
		1278	{
		1279	if (expect_false (idleall))
		1280	{
		1281	int pri;
		1282
		1283	for (pri = NUMPRI; pri--; )
557	{	1284	{
558	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1285	if (pendingcnt [pri])
		1286	break;
559		1287
560	if (fabs (diff) >= 1e-4)	1288	if (idlecnt [pri])
561	{	1289	{
562	evperiodic_stop (w);	1290	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
563	evperiodic_start (w);	1291	break;
564
565	i = 0; /* restart loop, inefficient, but time jumps should be rare */
566	}	1292	}
567	}	1293	}
568	}	1294	}
569	}	1295	}
		1296	#endif
570		1297
571	static void	1298	int inline_size
		1299	time_update_monotonic (EV_P)
		1300	{
		1301	mn_now = get_clock ();
		1302
		1303	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1304	{
		1305	ev_rt_now = rtmn_diff + mn_now;
		1306	return 0;
		1307	}
		1308	else
		1309	{
		1310	now_floor = mn_now;
		1311	ev_rt_now = ev_time ();
		1312	return 1;
		1313	}
		1314	}
		1315
		1316	void inline_size
572	time_update (void)	1317	time_update (EV_P)
573	{	1318	{
574	int i;	1319	int i;
575		1320
576	ev_now = ev_time ();	1321	#if EV_USE_MONOTONIC
577
578	if (have_monotonic)	1322	if (expect_true (have_monotonic))
579	{	1323	{
580	ev_tstamp odiff = diff;	1324	if (time_update_monotonic (EV_A))
581
582	for (i = 4; --i; ) /* loop a few times, before making important decisions */
583	{	1325	{
584	now = get_clock ();	1326	ev_tstamp odiff = rtmn_diff;
		1327
		1328	/* loop a few times, before making important decisions.
		1329	* on the choice of "4": one iteration isn't enough,
		1330	* in case we get preempted during the calls to
		1331	* ev_time and get_clock. a second call is almost guaranteed
		1332	* to succeed in that case, though. and looping a few more times
		1333	* doesn't hurt either as we only do this on time-jumps or
		1334	* in the unlikely event of having been preempted here.
		1335	*/
		1336	for (i = 4; --i; )
		1337	{
585	diff = ev_now - now;	1338	rtmn_diff = ev_rt_now - mn_now;
586		1339
587	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1340	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
588	return; /* all is well */	1341	return; /* all is well */
589		1342
590	ev_now = ev_time ();	1343	ev_rt_now = ev_time ();
		1344	mn_now = get_clock ();
		1345	now_floor = mn_now;
		1346	}
		1347
		1348	# if EV_PERIODIC_ENABLE
		1349	periodics_reschedule (EV_A);
		1350	# endif
		1351	/* no timer adjustment, as the monotonic clock doesn't jump */
		1352	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
591	}	1353	}
592
593	periodics_reschedule (diff - odiff);
594	/* no timer adjustment, as the monotonic clock doesn't jump */
595	}	1354	}
596	else	1355	else
		1356	#endif
597	{	1357	{
598	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	1358	ev_rt_now = ev_time ();
		1359
		1360	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
599	{	1361	{
		1362	#if EV_PERIODIC_ENABLE
600	periodics_reschedule (ev_now - now);	1363	periodics_reschedule (EV_A);
		1364	#endif
601		1365
602	/* adjust timers. this is easy, as the offset is the same for all */	1366	/* adjust timers. this is easy, as the offset is the same for all of them */
603	for (i = 0; i < timercnt; ++i)	1367	for (i = 0; i < timercnt; ++i)
604	timers [i]->at += diff;	1368	((WT)timers [i])->at += ev_rt_now - mn_now;
605	}	1369	}
606		1370
607	now = ev_now;	1371	mn_now = ev_rt_now;
608	}	1372	}
609	}	1373	}
610		1374
611	int ev_loop_done;	1375	void
		1376	ev_ref (EV_P)
		1377	{
		1378	++activecnt;
		1379	}
612		1380
		1381	void
		1382	ev_unref (EV_P)
		1383	{
		1384	--activecnt;
		1385	}
		1386
		1387	static int loop_done;
		1388
		1389	void
613	void ev_loop (int flags)	1390	ev_loop (EV_P_ int flags)
614	{	1391	{
615	double block;
616	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1392	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1393	? EVUNLOOP_ONE
		1394	: EVUNLOOP_CANCEL;
		1395
		1396	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
617		1397
618	do	1398	do
619	{	1399	{
		1400	#ifndef _WIN32
		1401	if (expect_false (curpid)) /* penalise the forking check even more */
		1402	if (expect_false (getpid () != curpid))
		1403	{
		1404	curpid = getpid ();
		1405	postfork = 1;
		1406	}
		1407	#endif
		1408
		1409	#if EV_FORK_ENABLE
		1410	/* we might have forked, so queue fork handlers */
		1411	if (expect_false (postfork))
		1412	if (forkcnt)
		1413	{
		1414	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1415	call_pending (EV_A);
		1416	}
		1417	#endif
		1418
620	/* queue check watchers (and execute them) */	1419	/* queue prepare watchers (and execute them) */
621	if (preparecnt)	1420	if (expect_false (preparecnt))
622	{	1421	{
623	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1422	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
624	call_pending ();	1423	call_pending (EV_A);
625	}	1424	}
626		1425
		1426	if (expect_false (!activecnt))
		1427	break;
		1428
		1429	/* we might have forked, so reify kernel state if necessary */
		1430	if (expect_false (postfork))
		1431	loop_fork (EV_A);
		1432
627	/* update fd-related kernel structures */	1433	/* update fd-related kernel structures */
628	fd_reify ();	1434	fd_reify (EV_A);
629		1435
630	/* calculate blocking time */	1436	/* calculate blocking time */
		1437	{
		1438	ev_tstamp block;
631		1439
632	/* we only need this for !monotonic clockor timers, but as we basically	1440	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
633	always have timers, we just calculate it always */	1441	block = 0.; /* do not block at all */
634	ev_now = ev_time ();
635
636	if (flags & EVLOOP_NONBLOCK || idlecnt)
637	block = 0.;
638	else	1442	else
639	{	1443	{
		1444	/* update time to cancel out callback processing overhead */
		1445	#if EV_USE_MONOTONIC
		1446	if (expect_true (have_monotonic))
		1447	time_update_monotonic (EV_A);
		1448	else
		1449	#endif
		1450	{
		1451	ev_rt_now = ev_time ();
		1452	mn_now = ev_rt_now;
		1453	}
		1454
640	block = MAX_BLOCKTIME;	1455	block = MAX_BLOCKTIME;
641		1456
642	if (timercnt)	1457	if (timercnt)
643	{	1458	{
644	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1459	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
645	if (block > to) block = to;	1460	if (block > to) block = to;
646	}	1461	}
647		1462
		1463	#if EV_PERIODIC_ENABLE
648	if (periodiccnt)	1464	if (periodiccnt)
649	{	1465	{
650	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1466	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
651	if (block > to) block = to;	1467	if (block > to) block = to;
652	}	1468	}
		1469	#endif
653		1470
654	if (block < 0.) block = 0.;	1471	if (expect_false (block < 0.)) block = 0.;
655	}	1472	}
656		1473
657	method_poll (block);	1474	++loop_count;
		1475	backend_poll (EV_A_ block);
		1476	}
658		1477
659	/* update ev_now, do magic */	1478	/* update ev_rt_now, do magic */
660	time_update ();	1479	time_update (EV_A);
661		1480
662	/* queue pending timers and reschedule them */	1481	/* queue pending timers and reschedule them */
663	timers_reify (); /* relative timers called last */	1482	timers_reify (EV_A); /* relative timers called last */
		1483	#if EV_PERIODIC_ENABLE
664	periodics_reify (); /* absolute timers called first */	1484	periodics_reify (EV_A); /* absolute timers called first */
		1485	#endif
665		1486
		1487	#if EV_IDLE_ENABLE
666	/* queue idle watchers unless io or timers are pending */	1488	/* queue idle watchers unless other events are pending */
667	if (!pendingcnt)	1489	idle_reify (EV_A);
668	queue_events ((W *)idles, idlecnt, EV_IDLE);	1490	#endif
669		1491
670	/* queue check watchers, to be executed first */	1492	/* queue check watchers, to be executed first */
671	if (checkcnt)	1493	if (expect_false (checkcnt))
672	queue_events ((W *)checks, checkcnt, EV_CHECK);	1494	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
673		1495
674	call_pending ();	1496	call_pending (EV_A);
675	}
676	while (!ev_loop_done);
677		1497
678	if (ev_loop_done != 2)	1498	}
		1499	while (expect_true (activecnt && !loop_done));
		1500
		1501	if (loop_done == EVUNLOOP_ONE)
		1502	loop_done = EVUNLOOP_CANCEL;
		1503	}
		1504
		1505	void
		1506	ev_unloop (EV_P_ int how)
		1507	{
679	ev_loop_done = 0;	1508	loop_done = how;
680	}	1509	}
681		1510
682	/*****************************************************************************/	1511	/*****************************************************************************/
683		1512
684	static void	1513	void inline_size
685	wlist_add (WL *head, WL elem)	1514	wlist_add (WL *head, WL elem)
686	{	1515	{
687	elem->next = *head;	1516	elem->next = *head;
688	*head = elem;	1517	*head = elem;
689	}	1518	}
690		1519
691	static void	1520	void inline_size
692	wlist_del (WL *head, WL elem)	1521	wlist_del (WL *head, WL elem)
693	{	1522	{
694	while (*head)	1523	while (*head)
695	{	1524	{
696	if (*head == elem)	1525	if (*head == elem)
…		…
701		1530
702	head = &(*head)->next;	1531	head = &(*head)->next;
703	}	1532	}
704	}	1533	}
705		1534
706	static void	1535	void inline_speed
707	ev_clear (W w)	1536	clear_pending (EV_P_ W w)
708	{	1537	{
709	if (w->pending)	1538	if (w->pending)
710	{	1539	{
711	pendings [w->pending - 1].w = 0;	1540	pendings [ABSPRI (w)][w->pending - 1].w = 0;
712	w->pending = 0;	1541	w->pending = 0;
713	}	1542	}
714	}	1543	}
715		1544
716	static void	1545	int
		1546	ev_clear_pending (EV_P_ void *w)
		1547	{
		1548	W w_ = (W)w;
		1549	int pending = w_->pending;
		1550
		1551	if (!pending)
		1552	return 0;
		1553
		1554	w_->pending = 0;
		1555	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1556	p->w = 0;
		1557
		1558	return p->events;
		1559	}
		1560
		1561	void inline_size
		1562	pri_adjust (EV_P_ W w)
		1563	{
		1564	int pri = w->priority;
		1565	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1566	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1567	w->priority = pri;
		1568	}
		1569
		1570	void inline_speed
717	ev_start (W w, int active)	1571	ev_start (EV_P_ W w, int active)
718	{	1572	{
		1573	pri_adjust (EV_A_ w);
719	w->active = active;	1574	w->active = active;
		1575	ev_ref (EV_A);
720	}	1576	}
721		1577
722	static void	1578	void inline_size
723	ev_stop (W w)	1579	ev_stop (EV_P_ W w)
724	{	1580	{
		1581	ev_unref (EV_A);
725	w->active = 0;	1582	w->active = 0;
726	}	1583	}
727		1584
728	/*****************************************************************************/	1585	/*****************************************************************************/
729		1586
730	void	1587	void noinline
731	evio_start (struct ev_io *w)	1588	ev_io_start (EV_P_ ev_io *w)
732	{	1589	{
733	if (ev_is_active (w))
734	return;
735
736	int fd = w->fd;	1590	int fd = w->fd;
737		1591
		1592	if (expect_false (ev_is_active (w)))
		1593	return;
		1594
		1595	assert (("ev_io_start called with negative fd", fd >= 0));
		1596
738	ev_start ((W)w, 1);	1597	ev_start (EV_A_ (W)w, 1);
739	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1598	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
740	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1599	wlist_add ((WL *)&anfds[fd].head, (WL)w);
741		1600
742	++fdchangecnt;	1601	fd_change (EV_A_ fd);
743	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
744	fdchanges [fdchangecnt - 1] = fd;
745
746	if (w->fd == 9)
747	printf ("start %p:%x\n", w, w->events);//D
748	}	1602	}
749		1603
750	void	1604	void noinline
751	evio_stop (struct ev_io *w)	1605	ev_io_stop (EV_P_ ev_io *w)
752	{	1606	{
753	if (w->fd == 9)	1607	clear_pending (EV_A_ (W)w);
754	printf ("stop %p:%x\n", w, w->events);//D
755	ev_clear ((W)w);
756	if (!ev_is_active (w))	1608	if (expect_false (!ev_is_active (w)))
757	return;	1609	return;
		1610
		1611	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
758		1612
759	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1613	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
760	ev_stop ((W)w);	1614	ev_stop (EV_A_ (W)w);
761		1615
762	++fdchangecnt;	1616	fd_change (EV_A_ w->fd);
763	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
764	fdchanges [fdchangecnt - 1] = w->fd;
765	}	1617	}
766		1618
767	void	1619	void noinline
768	evtimer_start (struct ev_timer *w)	1620	ev_timer_start (EV_P_ ev_timer *w)
769	{	1621	{
770	if (ev_is_active (w))	1622	if (expect_false (ev_is_active (w)))
771	return;	1623	return;
772		1624
773	w->at += now;	1625	((WT)w)->at += mn_now;
774		1626
775	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1627	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
776		1628
777	ev_start ((W)w, ++timercnt);	1629	ev_start (EV_A_ (W)w, ++timercnt);
778	array_needsize (timers, timermax, timercnt, );	1630	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
779	timers [timercnt - 1] = w;	1631	timers [timercnt - 1] = w;
780	upheap ((WT *)timers, timercnt - 1);	1632	upheap ((WT *)timers, timercnt - 1);
781	}
782		1633
783	void	1634	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1635	}
		1636
		1637	void noinline
784	evtimer_stop (struct ev_timer *w)	1638	ev_timer_stop (EV_P_ ev_timer *w)
785	{	1639	{
786	ev_clear ((W)w);	1640	clear_pending (EV_A_ (W)w);
787	if (!ev_is_active (w))	1641	if (expect_false (!ev_is_active (w)))
788	return;	1642	return;
789		1643
790	if (w->active < timercnt--)	1644	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1645
		1646	{
		1647	int active = ((W)w)->active;
		1648
		1649	if (expect_true (--active < --timercnt))
791	{	1650	{
792	timers [w->active - 1] = timers [timercnt];	1651	timers [active] = timers [timercnt];
793	downheap ((WT *)timers, timercnt, w->active - 1);	1652	adjustheap ((WT *)timers, timercnt, active);
794	}	1653	}
		1654	}
795		1655
796	w->at = w->repeat;	1656	((WT)w)->at -= mn_now;
797		1657
798	ev_stop ((W)w);	1658	ev_stop (EV_A_ (W)w);
799	}	1659	}
800		1660
801	void	1661	void noinline
802	evtimer_again (struct ev_timer *w)	1662	ev_timer_again (EV_P_ ev_timer *w)
803	{	1663	{
804	if (ev_is_active (w))	1664	if (ev_is_active (w))
805	{	1665	{
806	if (w->repeat)	1666	if (w->repeat)
807	{	1667	{
808	w->at = now + w->repeat;	1668	((WT)w)->at = mn_now + w->repeat;
809	downheap ((WT *)timers, timercnt, w->active - 1);	1669	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
810	}	1670	}
811	else	1671	else
812	evtimer_stop (w);	1672	ev_timer_stop (EV_A_ w);
813	}	1673	}
814	else if (w->repeat)	1674	else if (w->repeat)
		1675	{
		1676	w->at = w->repeat;
815	evtimer_start (w);	1677	ev_timer_start (EV_A_ w);
		1678	}
816	}	1679	}
817		1680
818	void	1681	#if EV_PERIODIC_ENABLE
		1682	void noinline
819	evperiodic_start (struct ev_periodic *w)	1683	ev_periodic_start (EV_P_ ev_periodic *w)
820	{	1684	{
821	if (ev_is_active (w))	1685	if (expect_false (ev_is_active (w)))
822	return;	1686	return;
823		1687
824	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1688	if (w->reschedule_cb)
825		1689	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1690	else if (w->interval)
		1691	{
		1692	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
826	/* this formula differs from the one in periodic_reify because we do not always round up */	1693	/* this formula differs from the one in periodic_reify because we do not always round up */
827	if (w->interval)
828	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1694	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1695	}
829		1696
830	ev_start ((W)w, ++periodiccnt);	1697	ev_start (EV_A_ (W)w, ++periodiccnt);
831	array_needsize (periodics, periodicmax, periodiccnt, );	1698	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
832	periodics [periodiccnt - 1] = w;	1699	periodics [periodiccnt - 1] = w;
833	upheap ((WT *)periodics, periodiccnt - 1);	1700	upheap ((WT *)periodics, periodiccnt - 1);
834	}
835		1701
836	void	1702	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1703	}
		1704
		1705	void noinline
837	evperiodic_stop (struct ev_periodic *w)	1706	ev_periodic_stop (EV_P_ ev_periodic *w)
838	{	1707	{
839	ev_clear ((W)w);	1708	clear_pending (EV_A_ (W)w);
840	if (!ev_is_active (w))	1709	if (expect_false (!ev_is_active (w)))
841	return;	1710	return;
842		1711
843	if (w->active < periodiccnt--)	1712	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1713
		1714	{
		1715	int active = ((W)w)->active;
		1716
		1717	if (expect_true (--active < --periodiccnt))
844	{	1718	{
845	periodics [w->active - 1] = periodics [periodiccnt];	1719	periodics [active] = periodics [periodiccnt];
846	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1720	adjustheap ((WT *)periodics, periodiccnt, active);
847	}	1721	}
		1722	}
848		1723
849	ev_stop ((W)w);	1724	ev_stop (EV_A_ (W)w);
850	}	1725	}
851		1726
852	void	1727	void noinline
		1728	ev_periodic_again (EV_P_ ev_periodic *w)
		1729	{
		1730	/* TODO: use adjustheap and recalculation */
		1731	ev_periodic_stop (EV_A_ w);
		1732	ev_periodic_start (EV_A_ w);
		1733	}
		1734	#endif
		1735
		1736	#ifndef SA_RESTART
		1737	# define SA_RESTART 0
		1738	#endif
		1739
		1740	void noinline
853	evsignal_start (struct ev_signal *w)	1741	ev_signal_start (EV_P_ ev_signal *w)
854	{	1742	{
		1743	#if EV_MULTIPLICITY
		1744	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1745	#endif
855	if (ev_is_active (w))	1746	if (expect_false (ev_is_active (w)))
856	return;	1747	return;
857		1748
		1749	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1750
858	ev_start ((W)w, 1);	1751	ev_start (EV_A_ (W)w, 1);
859	array_needsize (signals, signalmax, w->signum, signals_init);	1752	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
860	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1753	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
861		1754
862	if (!w->next)	1755	if (!((WL)w)->next)
863	{	1756	{
		1757	#if _WIN32
		1758	signal (w->signum, sighandler);
		1759	#else
864	struct sigaction sa;	1760	struct sigaction sa;
865	sa.sa_handler = sighandler;	1761	sa.sa_handler = sighandler;
866	sigfillset (&sa.sa_mask);	1762	sigfillset (&sa.sa_mask);
867	sa.sa_flags = 0;	1763	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
868	sigaction (w->signum, &sa, 0);	1764	sigaction (w->signum, &sa, 0);
		1765	#endif
869	}	1766	}
870	}	1767	}
871		1768
872	void	1769	void noinline
873	evsignal_stop (struct ev_signal *w)	1770	ev_signal_stop (EV_P_ ev_signal *w)
874	{	1771	{
875	ev_clear ((W)w);	1772	clear_pending (EV_A_ (W)w);
876	if (!ev_is_active (w))	1773	if (expect_false (!ev_is_active (w)))
877	return;	1774	return;
878		1775
879	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1776	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
880	ev_stop ((W)w);	1777	ev_stop (EV_A_ (W)w);
881		1778
882	if (!signals [w->signum - 1].head)	1779	if (!signals [w->signum - 1].head)
883	signal (w->signum, SIG_DFL);	1780	signal (w->signum, SIG_DFL);
884	}	1781	}
885		1782
886	void evidle_start (struct ev_idle *w)	1783	void
		1784	ev_child_start (EV_P_ ev_child *w)
887	{	1785	{
		1786	#if EV_MULTIPLICITY
		1787	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1788	#endif
888	if (ev_is_active (w))	1789	if (expect_false (ev_is_active (w)))
889	return;	1790	return;
890		1791
891	ev_start ((W)w, ++idlecnt);	1792	ev_start (EV_A_ (W)w, 1);
892	array_needsize (idles, idlemax, idlecnt, );	1793	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
893	idles [idlecnt - 1] = w;
894	}	1794	}
895		1795
896	void evidle_stop (struct ev_idle *w)	1796	void
		1797	ev_child_stop (EV_P_ ev_child *w)
897	{	1798	{
898	ev_clear ((W)w);	1799	clear_pending (EV_A_ (W)w);
899	if (ev_is_active (w))	1800	if (expect_false (!ev_is_active (w)))
900	return;	1801	return;
901		1802
902	idles [w->active - 1] = idles [--idlecnt];	1803	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
903	ev_stop ((W)w);	1804	ev_stop (EV_A_ (W)w);
904	}	1805	}
905		1806
		1807	#if EV_STAT_ENABLE
		1808
		1809	# ifdef _WIN32
		1810	# undef lstat
		1811	# define lstat(a,b) _stati64 (a,b)
		1812	# endif
		1813
		1814	#define DEF_STAT_INTERVAL 5.0074891
		1815	#define MIN_STAT_INTERVAL 0.1074891
		1816
		1817	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1818
		1819	#if EV_USE_INOTIFY
		1820	# define EV_INOTIFY_BUFSIZE 8192
		1821
		1822	static void noinline
		1823	infy_add (EV_P_ ev_stat *w)
		1824	{
		1825	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);
		1826
		1827	if (w->wd < 0)
		1828	{
		1829	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1830
		1831	/* monitor some parent directory for speedup hints */
		1832	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1833	{
		1834	char path [4096];
		1835	strcpy (path, w->path);
		1836
		1837	do
		1838	{
		1839	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1840	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1841
		1842	char *pend = strrchr (path, '/');
		1843
		1844	if (!pend)
		1845	break; /* whoops, no '/', complain to your admin */
		1846
		1847	*pend = 0;
		1848	w->wd = inotify_add_watch (fs_fd, path, mask);
		1849	}
		1850	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1851	}
		1852	}
		1853	else
		1854	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1855
		1856	if (w->wd >= 0)
		1857	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1858	}
		1859
		1860	static void noinline
		1861	infy_del (EV_P_ ev_stat *w)
		1862	{
		1863	int slot;
		1864	int wd = w->wd;
		1865
		1866	if (wd < 0)
		1867	return;
		1868
		1869	w->wd = -2;
		1870	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1871	wlist_del (&fs_hash [slot].head, (WL)w);
		1872
		1873	/* remove this watcher, if others are watching it, they will rearm */
		1874	inotify_rm_watch (fs_fd, wd);
		1875	}
		1876
		1877	static void noinline
		1878	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1879	{
		1880	if (slot < 0)
		1881	/* overflow, need to check for all hahs slots */
		1882	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1883	infy_wd (EV_A_ slot, wd, ev);
		1884	else
		1885	{
		1886	WL w_;
		1887
		1888	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1889	{
		1890	ev_stat *w = (ev_stat *)w_;
		1891	w_ = w_->next; /* lets us remove this watcher and all before it */
		1892
		1893	if (w->wd == wd || wd == -1)
		1894	{
		1895	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1896	{
		1897	w->wd = -1;
		1898	infy_add (EV_A_ w); /* re-add, no matter what */
		1899	}
		1900
		1901	stat_timer_cb (EV_A_ &w->timer, 0);
		1902	}
		1903	}
		1904	}
		1905	}
		1906
		1907	static void
		1908	infy_cb (EV_P_ ev_io *w, int revents)
		1909	{
		1910	char buf [EV_INOTIFY_BUFSIZE];
		1911	struct inotify_event *ev = (struct inotify_event *)buf;
		1912	int ofs;
		1913	int len = read (fs_fd, buf, sizeof (buf));
		1914
		1915	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1916	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1917	}
		1918
		1919	void inline_size
		1920	infy_init (EV_P)
		1921	{
		1922	if (fs_fd != -2)
		1923	return;
		1924
		1925	fs_fd = inotify_init ();
		1926
		1927	if (fs_fd >= 0)
		1928	{
		1929	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1930	ev_set_priority (&fs_w, EV_MAXPRI);
		1931	ev_io_start (EV_A_ &fs_w);
		1932	}
		1933	}
		1934
		1935	void inline_size
		1936	infy_fork (EV_P)
		1937	{
		1938	int slot;
		1939
		1940	if (fs_fd < 0)
		1941	return;
		1942
		1943	close (fs_fd);
		1944	fs_fd = inotify_init ();
		1945
		1946	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1947	{
		1948	WL w_ = fs_hash [slot].head;
		1949	fs_hash [slot].head = 0;
		1950
		1951	while (w_)
		1952	{
		1953	ev_stat *w = (ev_stat *)w_;
		1954	w_ = w_->next; /* lets us add this watcher */
		1955
		1956	w->wd = -1;
		1957
		1958	if (fs_fd >= 0)
		1959	infy_add (EV_A_ w); /* re-add, no matter what */
		1960	else
		1961	ev_timer_start (EV_A_ &w->timer);
		1962	}
		1963
		1964	}
		1965	}
		1966
		1967	#endif
		1968
		1969	void
		1970	ev_stat_stat (EV_P_ ev_stat *w)
		1971	{
		1972	if (lstat (w->path, &w->attr) < 0)
		1973	w->attr.st_nlink = 0;
		1974	else if (!w->attr.st_nlink)
		1975	w->attr.st_nlink = 1;
		1976	}
		1977
		1978	static void noinline
		1979	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1980	{
		1981	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1982
		1983	/* we copy this here each the time so that */
		1984	/* prev has the old value when the callback gets invoked */
		1985	w->prev = w->attr;
		1986	ev_stat_stat (EV_A_ w);
		1987
		1988	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1989	if (
		1990	w->prev.st_dev != w->attr.st_dev
		1991	|| w->prev.st_ino != w->attr.st_ino
		1992	|| w->prev.st_mode != w->attr.st_mode
		1993	|| w->prev.st_nlink != w->attr.st_nlink
		1994	|| w->prev.st_uid != w->attr.st_uid
		1995	|| w->prev.st_gid != w->attr.st_gid
		1996	|| w->prev.st_rdev != w->attr.st_rdev
		1997	|| w->prev.st_size != w->attr.st_size
		1998	|| w->prev.st_atime != w->attr.st_atime
		1999	|| w->prev.st_mtime != w->attr.st_mtime
		2000	|| w->prev.st_ctime != w->attr.st_ctime
		2001	) {
		2002	#if EV_USE_INOTIFY
		2003	infy_del (EV_A_ w);
		2004	infy_add (EV_A_ w);
		2005	ev_stat_stat (EV_A_ w); /* avoid race... */
		2006	#endif
		2007
		2008	ev_feed_event (EV_A_ w, EV_STAT);
		2009	}
		2010	}
		2011
		2012	void
		2013	ev_stat_start (EV_P_ ev_stat *w)
		2014	{
		2015	if (expect_false (ev_is_active (w)))
		2016	return;
		2017
		2018	/* since we use memcmp, we need to clear any padding data etc. */
		2019	memset (&w->prev, 0, sizeof (ev_statdata));
		2020	memset (&w->attr, 0, sizeof (ev_statdata));
		2021
		2022	ev_stat_stat (EV_A_ w);
		2023
		2024	if (w->interval < MIN_STAT_INTERVAL)
		2025	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2026
		2027	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2028	ev_set_priority (&w->timer, ev_priority (w));
		2029
		2030	#if EV_USE_INOTIFY
		2031	infy_init (EV_A);
		2032
		2033	if (fs_fd >= 0)
		2034	infy_add (EV_A_ w);
		2035	else
		2036	#endif
		2037	ev_timer_start (EV_A_ &w->timer);
		2038
		2039	ev_start (EV_A_ (W)w, 1);
		2040	}
		2041
		2042	void
		2043	ev_stat_stop (EV_P_ ev_stat *w)
		2044	{
		2045	clear_pending (EV_A_ (W)w);
		2046	if (expect_false (!ev_is_active (w)))
		2047	return;
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_del (EV_A_ w);
		2051	#endif
		2052	ev_timer_stop (EV_A_ &w->timer);
		2053
		2054	ev_stop (EV_A_ (W)w);
		2055	}
		2056	#endif
		2057
		2058	#if EV_IDLE_ENABLE
		2059	void
		2060	ev_idle_start (EV_P_ ev_idle *w)
		2061	{
		2062	if (expect_false (ev_is_active (w)))
		2063	return;
		2064
		2065	pri_adjust (EV_A_ (W)w);
		2066
		2067	{
		2068	int active = ++idlecnt [ABSPRI (w)];
		2069
		2070	++idleall;
		2071	ev_start (EV_A_ (W)w, active);
		2072
		2073	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2074	idles [ABSPRI (w)][active - 1] = w;
		2075	}
		2076	}
		2077
		2078	void
		2079	ev_idle_stop (EV_P_ ev_idle *w)
		2080	{
		2081	clear_pending (EV_A_ (W)w);
		2082	if (expect_false (!ev_is_active (w)))
		2083	return;
		2084
		2085	{
		2086	int active = ((W)w)->active;
		2087
		2088	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2089	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2090
		2091	ev_stop (EV_A_ (W)w);
		2092	--idleall;
		2093	}
		2094	}
		2095	#endif
		2096
		2097	void
906	void evprepare_start (struct ev_prepare *w)	2098	ev_prepare_start (EV_P_ ev_prepare *w)
907	{	2099	{
908	if (ev_is_active (w))	2100	if (expect_false (ev_is_active (w)))
909	return;	2101	return;
910		2102
911	ev_start ((W)w, ++preparecnt);	2103	ev_start (EV_A_ (W)w, ++preparecnt);
912	array_needsize (prepares, preparemax, preparecnt, );	2104	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
913	prepares [preparecnt - 1] = w;	2105	prepares [preparecnt - 1] = w;
914	}	2106	}
915		2107
		2108	void
916	void evprepare_stop (struct ev_prepare *w)	2109	ev_prepare_stop (EV_P_ ev_prepare *w)
917	{	2110	{
918	ev_clear ((W)w);	2111	clear_pending (EV_A_ (W)w);
919	if (ev_is_active (w))	2112	if (expect_false (!ev_is_active (w)))
920	return;	2113	return;
921		2114
		2115	{
		2116	int active = ((W)w)->active;
922	prepares [w->active - 1] = prepares [--preparecnt];	2117	prepares [active - 1] = prepares [--preparecnt];
		2118	((W)prepares [active - 1])->active = active;
		2119	}
		2120
923	ev_stop ((W)w);	2121	ev_stop (EV_A_ (W)w);
924	}	2122	}
925		2123
		2124	void
926	void evcheck_start (struct ev_check *w)	2125	ev_check_start (EV_P_ ev_check *w)
927	{	2126	{
928	if (ev_is_active (w))	2127	if (expect_false (ev_is_active (w)))
929	return;	2128	return;
930		2129
931	ev_start ((W)w, ++checkcnt);	2130	ev_start (EV_A_ (W)w, ++checkcnt);
932	array_needsize (checks, checkmax, checkcnt, );	2131	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
933	checks [checkcnt - 1] = w;	2132	checks [checkcnt - 1] = w;
934	}	2133	}
935		2134
		2135	void
936	void evcheck_stop (struct ev_check *w)	2136	ev_check_stop (EV_P_ ev_check *w)
937	{	2137	{
938	ev_clear ((W)w);	2138	clear_pending (EV_A_ (W)w);
939	if (ev_is_active (w))	2139	if (expect_false (!ev_is_active (w)))
940	return;	2140	return;
941		2141
		2142	{
		2143	int active = ((W)w)->active;
942	checks [w->active - 1] = checks [--checkcnt];	2144	checks [active - 1] = checks [--checkcnt];
		2145	((W)checks [active - 1])->active = active;
		2146	}
		2147
943	ev_stop ((W)w);	2148	ev_stop (EV_A_ (W)w);
944	}	2149	}
945		2150
946	void evchild_start (struct ev_child *w)	2151	#if EV_EMBED_ENABLE
		2152	void noinline
		2153	ev_embed_sweep (EV_P_ ev_embed *w)
947	{	2154	{
		2155	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2156	}
		2157
		2158	static void
		2159	embed_cb (EV_P_ ev_io *io, int revents)
		2160	{
		2161	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2162
948	if (ev_is_active (w))	2163	if (ev_cb (w))
949	return;	2164	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2165	else
		2166	ev_embed_sweep (loop, w);
		2167	}
950		2168
		2169	void
		2170	ev_embed_start (EV_P_ ev_embed *w)
		2171	{
		2172	if (expect_false (ev_is_active (w)))
		2173	return;
		2174
		2175	{
		2176	struct ev_loop *loop = w->loop;
		2177	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2178	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2179	}
		2180
		2181	ev_set_priority (&w->io, ev_priority (w));
		2182	ev_io_start (EV_A_ &w->io);
		2183
951	ev_start ((W)w, 1);	2184	ev_start (EV_A_ (W)w, 1);
952	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
953	}	2185	}
954		2186
955	void evchild_stop (struct ev_child *w)	2187	void
		2188	ev_embed_stop (EV_P_ ev_embed *w)
956	{	2189	{
957	ev_clear ((W)w);	2190	clear_pending (EV_A_ (W)w);
958	if (ev_is_active (w))	2191	if (expect_false (!ev_is_active (w)))
959	return;	2192	return;
960		2193
961	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2194	ev_io_stop (EV_A_ &w->io);
		2195
962	ev_stop ((W)w);	2196	ev_stop (EV_A_ (W)w);
963	}	2197	}
		2198	#endif
		2199
		2200	#if EV_FORK_ENABLE
		2201	void
		2202	ev_fork_start (EV_P_ ev_fork *w)
		2203	{
		2204	if (expect_false (ev_is_active (w)))
		2205	return;
		2206
		2207	ev_start (EV_A_ (W)w, ++forkcnt);
		2208	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2209	forks [forkcnt - 1] = w;
		2210	}
		2211
		2212	void
		2213	ev_fork_stop (EV_P_ ev_fork *w)
		2214	{
		2215	clear_pending (EV_A_ (W)w);
		2216	if (expect_false (!ev_is_active (w)))
		2217	return;
		2218
		2219	{
		2220	int active = ((W)w)->active;
		2221	forks [active - 1] = forks [--forkcnt];
		2222	((W)forks [active - 1])->active = active;
		2223	}
		2224
		2225	ev_stop (EV_A_ (W)w);
		2226	}
		2227	#endif
964		2228
965	/*****************************************************************************/	2229	/*****************************************************************************/
966		2230
967	struct ev_once	2231	struct ev_once
968	{	2232	{
969	struct ev_io io;	2233	ev_io io;
970	struct ev_timer to;	2234	ev_timer to;
971	void (*cb)(int revents, void *arg);	2235	void (*cb)(int revents, void *arg);
972	void *arg;	2236	void *arg;
973	};	2237	};
974		2238
975	static void	2239	static void
976	once_cb (struct ev_once *once, int revents)	2240	once_cb (EV_P_ struct ev_once *once, int revents)
977	{	2241	{
978	void (*cb)(int revents, void *arg) = once->cb;	2242	void (*cb)(int revents, void *arg) = once->cb;
979	void *arg = once->arg;	2243	void *arg = once->arg;
980		2244
981	evio_stop (&once->io);	2245	ev_io_stop (EV_A_ &once->io);
982	evtimer_stop (&once->to);	2246	ev_timer_stop (EV_A_ &once->to);
983	free (once);	2247	ev_free (once);
984		2248
985	cb (revents, arg);	2249	cb (revents, arg);
986	}	2250	}
987		2251
988	static void	2252	static void
989	once_cb_io (struct ev_io *w, int revents)	2253	once_cb_io (EV_P_ ev_io *w, int revents)
990	{	2254	{
991	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2255	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
992	}	2256	}
993		2257
994	static void	2258	static void
995	once_cb_to (struct ev_timer *w, int revents)	2259	once_cb_to (EV_P_ ev_timer *w, int revents)
996	{	2260	{
997	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2261	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
998	}	2262	}
999		2263
1000	void	2264	void
1001	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2265	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1002	{	2266	{
1003	struct ev_once *once = malloc (sizeof (struct ev_once));	2267	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1004		2268
1005	if (!once)	2269	if (expect_false (!once))
1006	cb (EV_ERROR, arg);	2270	{
1007	else	2271	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
		2272	return;
1008	{	2273	}
		2274
1009	once->cb = cb;	2275	once->cb = cb;
1010	once->arg = arg;	2276	once->arg = arg;
1011		2277
1012	evw_init (&once->io, once_cb_io);	2278	ev_init (&once->io, once_cb_io);
1013
1014	if (fd >= 0)	2279	if (fd >= 0)
1015	{	2280	{
1016	evio_set (&once->io, fd, events);	2281	ev_io_set (&once->io, fd, events);
1017	evio_start (&once->io);	2282	ev_io_start (EV_A_ &once->io);
1018	}	2283	}
1019		2284
1020	evw_init (&once->to, once_cb_to);	2285	ev_init (&once->to, once_cb_to);
1021
1022	if (timeout >= 0.)	2286	if (timeout >= 0.)
1023	{	2287	{
1024	evtimer_set (&once->to, timeout, 0.);	2288	ev_timer_set (&once->to, timeout, 0.);
1025	evtimer_start (&once->to);	2289	ev_timer_start (EV_A_ &once->to);
1026	}
1027	}
1028	}
1029
1030	/*****************************************************************************/
1031
1032	#if 0
1033
1034	struct ev_io wio;
1035
1036	static void
1037	sin_cb (struct ev_io *w, int revents)
1038	{
1039	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1040	}
1041
1042	static void
1043	ocb (struct ev_timer *w, int revents)
1044	{
1045	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1046	evtimer_stop (w);
1047	evtimer_start (w);
1048	}
1049
1050	static void
1051	scb (struct ev_signal *w, int revents)
1052	{
1053	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1054	evio_stop (&wio);
1055	evio_start (&wio);
1056	}
1057
1058	static void
1059	gcb (struct ev_signal *w, int revents)
1060	{
1061	fprintf (stderr, "generic %x\n", revents);
1062
1063	}
1064
1065	int main (void)
1066	{
1067	ev_init (0);
1068
1069	evio_init (&wio, sin_cb, 0, EV_READ);
1070	evio_start (&wio);
1071
1072	struct ev_timer t[10000];
1073
1074	#if 0
1075	int i;
1076	for (i = 0; i < 10000; ++i)
1077	{	2290	}
1078	struct ev_timer *w = t + i;
1079	evw_init (w, ocb, i);
1080	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
1081	evtimer_start (w);
1082	if (drand48 () < 0.5)
1083	evtimer_stop (w);
1084	}
1085	#endif
1086
1087	struct ev_timer t1;
1088	evtimer_init (&t1, ocb, 5, 10);
1089	evtimer_start (&t1);
1090
1091	struct ev_signal sig;
1092	evsignal_init (&sig, scb, SIGQUIT);
1093	evsignal_start (&sig);
1094
1095	struct ev_check cw;
1096	evcheck_init (&cw, gcb);
1097	evcheck_start (&cw);
1098
1099	struct ev_idle iw;
1100	evidle_init (&iw, gcb);
1101	evidle_start (&iw);
1102
1103	ev_loop (0);
1104
1105	return 0;
1106	}	2291	}
1107		2292
		2293	#ifdef __cplusplus
		2294	}
1108	#endif	2295	#endif
1109		2296
1110
1111
1112

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