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Comparing libev/ev.c (file contents):
Revision 1.25 by root, Wed Oct 31 21:34:45 2007 UTC vs.
Revision 1.184 by root, Wed Dec 12 05:30:52 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	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
63		230
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	232	#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 */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
67		234
68	#include "ev.h"	235	#if __GNUC__ >= 3
		236	# define expect(expr,value) __builtin_expect ((expr),(value))
		237	# define noinline __attribute__ ((noinline))
		238	#else
		239	# define expect(expr,value) (expr)
		240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
		244	#endif
69		245
		246	#define expect_false(expr) expect ((expr) != 0, 0)
		247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
		255
		256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		258
		259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
		261
70	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
73		265
74	static ev_tstamp now, diff; /* monotonic clock */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		267
		268	#ifdef _WIN32
		269	# include "ev_win32.c"
		270	#endif
		271
		272	/*****************************************************************************/
		273
		274	static void (*syserr_cb)(const char *msg);
		275
		276	void
		277	ev_set_syserr_cb (void (*cb)(const char *msg))
		278	{
		279	syserr_cb = cb;
		280	}
		281
		282	static void noinline
		283	syserr (const char *msg)
		284	{
		285	if (!msg)
		286	msg = "(libev) system error";
		287
		288	if (syserr_cb)
		289	syserr_cb (msg);
		290	else
		291	{
		292	perror (msg);
		293	abort ();
		294	}
		295	}
		296
		297	static void *(*alloc)(void *ptr, long size);
		298
		299	void
		300	ev_set_allocator (void *(*cb)(void *ptr, long size))
		301	{
		302	alloc = cb;
		303	}
		304
		305	inline_speed void *
		306	ev_realloc (void *ptr, long size)
		307	{
		308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		309
		310	if (!ptr && size)
		311	{
		312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		313	abort ();
		314	}
		315
		316	return ptr;
		317	}
		318
		319	#define ev_malloc(size) ev_realloc (0, (size))
		320	#define ev_free(ptr) ev_realloc ((ptr), 0)
		321
		322	/*****************************************************************************/
		323
		324	typedef struct
		325	{
		326	WL head;
		327	unsigned char events;
		328	unsigned char reify;
		329	#if EV_SELECT_IS_WINSOCKET
		330	SOCKET handle;
		331	#endif
		332	} ANFD;
		333
		334	typedef struct
		335	{
		336	W w;
		337	int events;
		338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
		346
		347	#if EV_MULTIPLICITY
		348
		349	struct ev_loop
		350	{
		351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
		353	#define VAR(name,decl) decl;
		354	#include "ev_vars.h"
		355	#undef VAR
		356	};
		357	#include "ev_wrap.h"
		358
		359	static struct ev_loop default_loop_struct;
		360	struct ev_loop *ev_default_loop_ptr;
		361
		362	#else
		363
75	ev_tstamp ev_now;	364	ev_tstamp ev_rt_now;
76	int ev_method;	365	#define VAR(name,decl) static decl;
		366	#include "ev_vars.h"
		367	#undef VAR
77		368
78	static int have_monotonic; /* runtime */	369	static int ev_default_loop_ptr;
79		370
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	371	#endif
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		372
84	/*****************************************************************************/	373	/*****************************************************************************/
85		374
86	ev_tstamp	375	ev_tstamp
87	ev_time (void)	376	ev_time (void)
88	{	377	{
89	#if HAVE_REALTIME	378	#if EV_USE_REALTIME
90	struct timespec ts;	379	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	380	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	381	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	382	#else
94	struct timeval tv;	383	struct timeval tv;
95	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	386	#endif
98	}	387	}
99		388
100	static ev_tstamp	389	ev_tstamp inline_size
101	get_clock (void)	390	get_clock (void)
102	{	391	{
103	#if HAVE_MONOTONIC	392	#if EV_USE_MONOTONIC
104	if (have_monotonic)	393	if (expect_true (have_monotonic))
105	{	394	{
106	struct timespec ts;	395	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	396	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	397	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	398	}
110	#endif	399	#endif
111		400
112	return ev_time ();	401	return ev_time ();
113	}	402	}
114		403
		404	#if EV_MULTIPLICITY
		405	ev_tstamp
		406	ev_now (EV_P)
		407	{
		408	return ev_rt_now;
		409	}
		410	#endif
		411
		412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
		439
115	#define array_needsize(base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	441	if (expect_false ((cnt) > (cur))) \
117	{ \	442	{ \
118	int newcnt = cur; \	443	int ocur_ = (cur); \
119	do \	444	(base) = (type *)array_realloc \
120	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
121	newcnt = (newcnt << 1) | 4 & ~3; \	446	init ((base) + (ocur_), (cur) - ocur_); \
122	} \	447	}
123	while ((cnt) > newcnt); \	448
		449	#if 0
		450	#define array_slim(type,stem) \
		451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
124	\	452	{ \
125	base = realloc (base, sizeof (*base) * (newcnt)); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
126	init (base + cur, newcnt - cur); \	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
127	cur = newcnt; \	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
128	}	456	}
		457	#endif
		458
		459	#define array_free(stem, idx) \
		460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		461
130	/*****************************************************************************/	462	/*****************************************************************************/
131		463
		464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
		466	{
		467	W w_ = (W)w;
		468	int pri = ABSPRI (w_);
		469
		470	if (expect_false (w_->pending))
		471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
		480
		481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
		493	anfds_init (ANFD *base, int count)
		494	{
		495	while (count--)
		496	{
		497	base->head = 0;
		498	base->events = EV_NONE;
		499	base->reify = 0;
		500
		501	++base;
		502	}
		503	}
		504
		505	void inline_speed
		506	fd_event (EV_P_ int fd, int revents)
		507	{
		508	ANFD *anfd = anfds + fd;
		509	ev_io *w;
		510
		511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		512	{
		513	int ev = w->events & revents;
		514
		515	if (ev)
		516	ev_feed_event (EV_A_ (W)w, ev);
		517	}
		518	}
		519
		520	void
		521	ev_feed_fd_event (EV_P_ int fd, int revents)
		522	{
		523	if (fd >= 0 && fd < anfdmax)
		524	fd_event (EV_A_ fd, revents);
		525	}
		526
		527	void inline_size
		528	fd_reify (EV_P)
		529	{
		530	int i;
		531
		532	for (i = 0; i < fdchangecnt; ++i)
		533	{
		534	int fd = fdchanges [i];
		535	ANFD *anfd = anfds + fd;
		536	ev_io *w;
		537
		538	unsigned char events = 0;
		539
		540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		541	events |= (unsigned char)w->events;
		542
		543	#if EV_SELECT_IS_WINSOCKET
		544	if (events)
		545	{
		546	unsigned long argp;
		547	anfd->handle = _get_osfhandle (fd);
		548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		549	}
		550	#endif
		551
		552	{
		553	unsigned char o_events = anfd->events;
		554	unsigned char o_reify = anfd->reify;
		555
		556	anfd->reify = 0;
		557	anfd->events = events;
		558
		559	if (o_events != events || o_reify & EV_IOFDSET)
		560	backend_modify (EV_A_ fd, o_events, events);
		561	}
		562	}
		563
		564	fdchangecnt = 0;
		565	}
		566
		567	void inline_size
		568	fd_change (EV_P_ int fd, int flags)
		569	{
		570	unsigned char reify = anfds [fd].reify;
		571	anfds [fd].reify |= flags;
		572
		573	if (expect_true (!reify))
		574	{
		575	++fdchangecnt;
		576	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
		577	fdchanges [fdchangecnt - 1] = fd;
		578	}
		579	}
		580
		581	void inline_speed
		582	fd_kill (EV_P_ int fd)
		583	{
		584	ev_io *w;
		585
		586	while ((w = (ev_io *)anfds [fd].head))
		587	{
		588	ev_io_stop (EV_A_ w);
		589	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		590	}
		591	}
		592
		593	int inline_size
		594	fd_valid (int fd)
		595	{
		596	#ifdef _WIN32
		597	return _get_osfhandle (fd) != -1;
		598	#else
		599	return fcntl (fd, F_GETFD) != -1;
		600	#endif
		601	}
		602
		603	/* called on EBADF to verify fds */
		604	static void noinline
		605	fd_ebadf (EV_P)
		606	{
		607	int fd;
		608
		609	for (fd = 0; fd < anfdmax; ++fd)
		610	if (anfds [fd].events)
		611	if (!fd_valid (fd) == -1 && errno == EBADF)
		612	fd_kill (EV_A_ fd);
		613	}
		614
		615	/* called on ENOMEM in select/poll to kill some fds and retry */
		616	static void noinline
		617	fd_enomem (EV_P)
		618	{
		619	int fd;
		620
		621	for (fd = anfdmax; fd--; )
		622	if (anfds [fd].events)
		623	{
		624	fd_kill (EV_A_ fd);
		625	return;
		626	}
		627	}
		628
		629	/* usually called after fork if backend needs to re-arm all fds from scratch */
		630	static void noinline
		631	fd_rearm_all (EV_P)
		632	{
		633	int fd;
		634
		635	for (fd = 0; fd < anfdmax; ++fd)
		636	if (anfds [fd].events)
		637	{
		638	anfds [fd].events = 0;
		639	fd_change (EV_A_ fd, EV_IOFDSET | 1);
		640	}
		641	}
		642
		643	/*****************************************************************************/
		644
		645	void inline_speed
		646	upheap (WT *heap, int k)
		647	{
		648	WT w = heap [k];
		649
		650	while (k)
		651	{
		652	int p = (k - 1) >> 1;
		653
		654	if (heap [p]->at <= w->at)
		655	break;
		656
		657	heap [k] = heap [p];
		658	((W)heap [k])->active = k + 1;
		659	k = p;
		660	}
		661
		662	heap [k] = w;
		663	((W)heap [k])->active = k + 1;
		664	}
		665
		666	void inline_speed
		667	downheap (WT *heap, int N, int k)
		668	{
		669	WT w = heap [k];
		670
		671	for (;;)
		672	{
		673	int c = (k << 1) + 1;
		674
		675	if (c >= N)
		676	break;
		677
		678	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		679	? 1 : 0;
		680
		681	if (w->at <= heap [c]->at)
		682	break;
		683
		684	heap [k] = heap [c];
		685	((W)heap [k])->active = k + 1;
		686
		687	k = c;
		688	}
		689
		690	heap [k] = w;
		691	((W)heap [k])->active = k + 1;
		692	}
		693
		694	void inline_size
		695	adjustheap (WT *heap, int N, int k)
		696	{
		697	upheap (heap, k);
		698	downheap (heap, N, k);
		699	}
		700
		701	/*****************************************************************************/
		702
132	typedef struct	703	typedef struct
133	{	704	{
134	struct ev_io *head;	705	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;	706	sig_atomic_t volatile gotsig;
271	} ANSIG;	707	} ANSIG;
272		708
273	static ANSIG *signals;	709	static ANSIG *signals;
274	static int signalmax;	710	static int signalmax;
275		711
276	static int sigpipe [2];	712	static int sigpipe [2];
277	static sig_atomic_t gotsig;	713	static sig_atomic_t volatile gotsig;
278	static struct ev_io sigev;	714	static ev_io sigev;
279		715
280	static void	716	void inline_size
281	signals_init (ANSIG *base, int count)	717	signals_init (ANSIG *base, int count)
282	{	718	{
283	while (count--)	719	while (count--)
284	{	720	{
285	base->head = 0;	721	base->head = 0;
286	base->gotsig = 0;	722	base->gotsig = 0;
		723
287	++base;	724	++base;
288	}	725	}
289	}	726	}
290		727
291	static void	728	static void
292	sighandler (int signum)	729	sighandler (int signum)
293	{	730	{
		731	#if _WIN32
		732	signal (signum, sighandler);
		733	#endif
		734
294	signals [signum - 1].gotsig = 1;	735	signals [signum - 1].gotsig = 1;
295		736
296	if (!gotsig)	737	if (!gotsig)
297	{	738	{
		739	int old_errno = errno;
298	gotsig = 1;	740	gotsig = 1;
299	write (sigpipe [1], &gotsig, 1);	741	write (sigpipe [1], &signum, 1);
		742	errno = old_errno;
300	}	743	}
		744	}
		745
		746	void noinline
		747	ev_feed_signal_event (EV_P_ int signum)
		748	{
		749	WL w;
		750
		751	#if EV_MULTIPLICITY
		752	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		753	#endif
		754
		755	--signum;
		756
		757	if (signum < 0 || signum >= signalmax)
		758	return;
		759
		760	signals [signum].gotsig = 0;
		761
		762	for (w = signals [signum].head; w; w = w->next)
		763	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
301	}	764	}
302		765
303	static void	766	static void
304	sigcb (struct ev_io *iow, int revents)	767	sigcb (EV_P_ ev_io *iow, int revents)
305	{	768	{
306	struct ev_signal *w;
307	int sig;	769	int signum;
308		770
		771	read (sigpipe [0], &revents, 1);
309	gotsig = 0;	772	gotsig = 0;
310	read (sigpipe [0], &revents, 1);
311		773
312	for (sig = signalmax; sig--; )	774	for (signum = signalmax; signum--; )
313	if (signals [sig].gotsig)	775	if (signals [signum].gotsig)
		776	ev_feed_signal_event (EV_A_ signum + 1);
		777	}
		778
		779	void inline_speed
		780	fd_intern (int fd)
		781	{
		782	#ifdef _WIN32
		783	int arg = 1;
		784	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		785	#else
		786	fcntl (fd, F_SETFD, FD_CLOEXEC);
		787	fcntl (fd, F_SETFL, O_NONBLOCK);
		788	#endif
		789	}
		790
		791	static void noinline
		792	siginit (EV_P)
		793	{
		794	fd_intern (sigpipe [0]);
		795	fd_intern (sigpipe [1]);
		796
		797	ev_io_set (&sigev, sigpipe [0], EV_READ);
		798	ev_io_start (EV_A_ &sigev);
		799	ev_unref (EV_A); /* child watcher should not keep loop alive */
		800	}
		801
		802	/*****************************************************************************/
		803
		804	static WL childs [EV_PID_HASHSIZE];
		805
		806	#ifndef _WIN32
		807
		808	static ev_signal childev;
		809
		810	void inline_speed
		811	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		812	{
		813	ev_child *w;
		814
		815	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		816	if (w->pid == pid || !w->pid)
314	{	817	{
315	signals [sig].gotsig = 0;	818	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
316		819	w->rpid = pid;
317	for (w = signals [sig].head; w; w = w->next)	820	w->rstatus = status;
318	event ((W)w, EV_SIGNAL);	821	ev_feed_event (EV_A_ (W)w, EV_CHILD);
319	}	822	}
320	}	823	}
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		824
352	#ifndef WCONTINUED	825	#ifndef WCONTINUED
353	# define WCONTINUED 0	826	# define WCONTINUED 0
354	#endif	827	#endif
355		828
356	static void	829	static void
357	childcb (struct ev_signal *sw, int revents)	830	childcb (EV_P_ ev_signal *sw, int revents)
358	{	831	{
359	struct ev_child *w;
360	int pid, status;	832	int pid, status;
361		833
		834	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
362	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	835	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
363	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	836	if (!WCONTINUED
364	if (w->pid == pid || w->pid == -1)	837	|| errno != EINVAL
365	{	838	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
366	w->status = status;	839	return;
367	event ((W)w, EV_CHILD);	840
368	}	841	/* make sure we are called again until all childs have been reaped */
		842	/* we need to do it this way so that the callback gets called before we continue */
		843	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		844
		845	child_reap (EV_A_ sw, pid, pid, status);
		846	if (EV_PID_HASHSIZE > 1)
		847	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
369	}	848	}
		849
		850	#endif
370		851
371	/*****************************************************************************/	852	/*****************************************************************************/
372		853
		854	#if EV_USE_PORT
		855	# include "ev_port.c"
		856	#endif
		857	#if EV_USE_KQUEUE
		858	# include "ev_kqueue.c"
		859	#endif
373	#if HAVE_EPOLL	860	#if EV_USE_EPOLL
374	# include "ev_epoll.c"	861	# include "ev_epoll.c"
375	#endif	862	#endif
		863	#if EV_USE_POLL
		864	# include "ev_poll.c"
		865	#endif
376	#if HAVE_SELECT	866	#if EV_USE_SELECT
377	# include "ev_select.c"	867	# include "ev_select.c"
378	#endif	868	#endif
379		869
380	int	870	int
381	ev_version_major (void)	871	ev_version_major (void)
…		…
387	ev_version_minor (void)	877	ev_version_minor (void)
388	{	878	{
389	return EV_VERSION_MINOR;	879	return EV_VERSION_MINOR;
390	}	880	}
391		881
392	int ev_init (int flags)	882	/* return true if we are running with elevated privileges and should ignore env variables */
		883	int inline_size
		884	enable_secure (void)
393	{	885	{
394	if (!ev_method)	886	#ifdef _WIN32
		887	return 0;
		888	#else
		889	return getuid () != geteuid ()
		890	|| getgid () != getegid ();
		891	#endif
		892	}
		893
		894	unsigned int
		895	ev_supported_backends (void)
		896	{
		897	unsigned int flags = 0;
		898
		899	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		900	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		901	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		902	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		903	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		904
		905	return flags;
		906	}
		907
		908	unsigned int
		909	ev_recommended_backends (void)
		910	{
		911	unsigned int flags = ev_supported_backends ();
		912
		913	#ifndef __NetBSD__
		914	/* kqueue is borked on everything but netbsd apparently */
		915	/* it usually doesn't work correctly on anything but sockets and pipes */
		916	flags &= ~EVBACKEND_KQUEUE;
		917	#endif
		918	#ifdef __APPLE__
		919	// flags &= ~EVBACKEND_KQUEUE; for documentation
		920	flags &= ~EVBACKEND_POLL;
		921	#endif
		922
		923	return flags;
		924	}
		925
		926	unsigned int
		927	ev_embeddable_backends (void)
		928	{
		929	return EVBACKEND_EPOLL
		930	| EVBACKEND_KQUEUE
		931	| EVBACKEND_PORT;
		932	}
		933
		934	unsigned int
		935	ev_backend (EV_P)
		936	{
		937	return backend;
		938	}
		939
		940	unsigned int
		941	ev_loop_count (EV_P)
		942	{
		943	return loop_count;
		944	}
		945
		946	static void noinline
		947	loop_init (EV_P_ unsigned int flags)
		948	{
		949	if (!backend)
395	{	950	{
396	#if HAVE_MONOTONIC	951	#if EV_USE_MONOTONIC
397	{	952	{
398	struct timespec ts;	953	struct timespec ts;
399	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	954	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
400	have_monotonic = 1;	955	have_monotonic = 1;
401	}	956	}
402	#endif	957	#endif
403		958
404	ev_now = ev_time ();	959	ev_rt_now = ev_time ();
405	now = get_clock ();	960	mn_now = get_clock ();
		961	now_floor = mn_now;
406	diff = ev_now - now;	962	rtmn_diff = ev_rt_now - mn_now;
407		963
		964	/* pid check not overridable via env */
		965	#ifndef _WIN32
		966	if (flags & EVFLAG_FORKCHECK)
		967	curpid = getpid ();
		968	#endif
		969
		970	if (!(flags & EVFLAG_NOENV)
		971	&& !enable_secure ()
		972	&& getenv ("LIBEV_FLAGS"))
		973	flags = atoi (getenv ("LIBEV_FLAGS"));
		974
		975	if (!(flags & 0x0000ffffUL))
		976	flags |= ev_recommended_backends ();
		977
		978	backend = 0;
		979	backend_fd = -1;
		980	#if EV_USE_INOTIFY
		981	fs_fd = -2;
		982	#endif
		983
		984	#if EV_USE_PORT
		985	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		986	#endif
		987	#if EV_USE_KQUEUE
		988	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		989	#endif
		990	#if EV_USE_EPOLL
		991	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		992	#endif
		993	#if EV_USE_POLL
		994	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
		995	#endif
		996	#if EV_USE_SELECT
		997	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
		998	#endif
		999
		1000	ev_init (&sigev, sigcb);
		1001	ev_set_priority (&sigev, EV_MAXPRI);
		1002	}
		1003	}
		1004
		1005	static void noinline
		1006	loop_destroy (EV_P)
		1007	{
		1008	int i;
		1009
		1010	#if EV_USE_INOTIFY
		1011	if (fs_fd >= 0)
		1012	close (fs_fd);
		1013	#endif
		1014
		1015	if (backend_fd >= 0)
		1016	close (backend_fd);
		1017
		1018	#if EV_USE_PORT
		1019	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1020	#endif
		1021	#if EV_USE_KQUEUE
		1022	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		1023	#endif
		1024	#if EV_USE_EPOLL
		1025	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1026	#endif
		1027	#if EV_USE_POLL
		1028	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1029	#endif
		1030	#if EV_USE_SELECT
		1031	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1032	#endif
		1033
		1034	for (i = NUMPRI; i--; )
		1035	{
		1036	array_free (pending, [i]);
		1037	#if EV_IDLE_ENABLE
		1038	array_free (idle, [i]);
		1039	#endif
		1040	}
		1041
		1042	/* have to use the microsoft-never-gets-it-right macro */
		1043	array_free (fdchange, EMPTY);
		1044	array_free (timer, EMPTY);
		1045	#if EV_PERIODIC_ENABLE
		1046	array_free (periodic, EMPTY);
		1047	#endif
		1048	array_free (prepare, EMPTY);
		1049	array_free (check, EMPTY);
		1050
		1051	backend = 0;
		1052	}
		1053
		1054	void inline_size infy_fork (EV_P);
		1055
		1056	void inline_size
		1057	loop_fork (EV_P)
		1058	{
		1059	#if EV_USE_PORT
		1060	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1061	#endif
		1062	#if EV_USE_KQUEUE
		1063	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1064	#endif
		1065	#if EV_USE_EPOLL
		1066	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1067	#endif
		1068	#if EV_USE_INOTIFY
		1069	infy_fork (EV_A);
		1070	#endif
		1071
		1072	if (ev_is_active (&sigev))
		1073	{
		1074	/* default loop */
		1075
		1076	ev_ref (EV_A);
		1077	ev_io_stop (EV_A_ &sigev);
		1078	close (sigpipe [0]);
		1079	close (sigpipe [1]);
		1080
		1081	while (pipe (sigpipe))
		1082	syserr ("(libev) error creating pipe");
		1083
		1084	siginit (EV_A);
		1085	}
		1086
		1087	postfork = 0;
		1088	}
		1089
		1090	#if EV_MULTIPLICITY
		1091	struct ev_loop *
		1092	ev_loop_new (unsigned int flags)
		1093	{
		1094	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1095
		1096	memset (loop, 0, sizeof (struct ev_loop));
		1097
		1098	loop_init (EV_A_ flags);
		1099
		1100	if (ev_backend (EV_A))
		1101	return loop;
		1102
		1103	return 0;
		1104	}
		1105
		1106	void
		1107	ev_loop_destroy (EV_P)
		1108	{
		1109	loop_destroy (EV_A);
		1110	ev_free (loop);
		1111	}
		1112
		1113	void
		1114	ev_loop_fork (EV_P)
		1115	{
		1116	postfork = 1;
		1117	}
		1118
		1119	#endif
		1120
		1121	#if EV_MULTIPLICITY
		1122	struct ev_loop *
		1123	ev_default_loop_init (unsigned int flags)
		1124	#else
		1125	int
		1126	ev_default_loop (unsigned int flags)
		1127	#endif
		1128	{
		1129	if (sigpipe [0] == sigpipe [1])
408	if (pipe (sigpipe))	1130	if (pipe (sigpipe))
409	return 0;	1131	return 0;
410		1132
411	ev_method = EVMETHOD_NONE;	1133	if (!ev_default_loop_ptr)
412	#if HAVE_EPOLL	1134	{
413	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	1135	#if EV_MULTIPLICITY
		1136	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1137	#else
		1138	ev_default_loop_ptr = 1;
414	#endif	1139	#endif
415	#if HAVE_SELECT
416	if (ev_method == EVMETHOD_NONE) select_init (flags);
417	#endif
418		1140
419	if (ev_method)	1141	loop_init (EV_A_ flags);
		1142
		1143	if (ev_backend (EV_A))
420	{	1144	{
421	evw_init (&sigev, sigcb);
422	siginit ();	1145	siginit (EV_A);
423		1146
		1147	#ifndef _WIN32
424	evsignal_init (&childev, childcb, SIGCHLD);	1148	ev_signal_init (&childev, childcb, SIGCHLD);
		1149	ev_set_priority (&childev, EV_MAXPRI);
425	evsignal_start (&childev);	1150	ev_signal_start (EV_A_ &childev);
		1151	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1152	#endif
426	}	1153	}
		1154	else
		1155	ev_default_loop_ptr = 0;
427	}	1156	}
428		1157
429	return ev_method;	1158	return ev_default_loop_ptr;
		1159	}
		1160
		1161	void
		1162	ev_default_destroy (void)
		1163	{
		1164	#if EV_MULTIPLICITY
		1165	struct ev_loop *loop = ev_default_loop_ptr;
		1166	#endif
		1167
		1168	#ifndef _WIN32
		1169	ev_ref (EV_A); /* child watcher */
		1170	ev_signal_stop (EV_A_ &childev);
		1171	#endif
		1172
		1173	ev_ref (EV_A); /* signal watcher */
		1174	ev_io_stop (EV_A_ &sigev);
		1175
		1176	close (sigpipe [0]); sigpipe [0] = 0;
		1177	close (sigpipe [1]); sigpipe [1] = 0;
		1178
		1179	loop_destroy (EV_A);
		1180	}
		1181
		1182	void
		1183	ev_default_fork (void)
		1184	{
		1185	#if EV_MULTIPLICITY
		1186	struct ev_loop *loop = ev_default_loop_ptr;
		1187	#endif
		1188
		1189	if (backend)
		1190	postfork = 1;
430	}	1191	}
431		1192
432	/*****************************************************************************/	1193	/*****************************************************************************/
433		1194
434	void	1195	void
435	ev_prefork (void)	1196	ev_invoke (EV_P_ void *w, int revents)
436	{	1197	{
437	/* nop */	1198	EV_CB_INVOKE ((W)w, revents);
438	}	1199	}
439		1200
440	void	1201	void inline_speed
441	ev_postfork_parent (void)	1202	call_pending (EV_P)
442	{	1203	{
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;	1204	int pri;
467		1205
468	for (i = 0; i < fdchangecnt; ++i)	1206	for (pri = NUMPRI; pri--; )
		1207	while (pendingcnt [pri])
469	{	1208	{
470	int fd = fdchanges [i];	1209	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
471	ANFD *anfd = anfds + fd;
472	struct ev_io *w;
473		1210
474	int wev = 0;	1211	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	{	1212	{
481	method_modify (fd, anfd->wev, wev);	1213	/*assert (("non-pending watcher on pending list", p->w->pending));*/
482	anfd->wev = wev;
483	}
484	}
485		1214
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;	1215	p->w->pending = 0;
499	p->w->cb (p->w, p->events);	1216	EV_CB_INVOKE (p->w, p->events);
500	}	1217	}
501	}	1218	}
502	}	1219	}
503		1220
504	static void	1221	void inline_size
505	timers_reify (void)	1222	timers_reify (EV_P)
506	{	1223	{
507	while (timercnt && timers [0]->at <= now)	1224	while (timercnt && ((WT)timers [0])->at <= mn_now)
508	{	1225	{
509	struct ev_timer *w = timers [0];	1226	ev_timer *w = (ev_timer *)timers [0];
510		1227
511	event ((W)w, EV_TIMEOUT);	1228	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
512		1229
513	/* first reschedule or stop timer */	1230	/* first reschedule or stop timer */
514	if (w->repeat)	1231	if (w->repeat)
515	{	1232	{
		1233	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1234
516	w->at = now + w->repeat;	1235	((WT)w)->at += w->repeat;
517	assert (("timer timeout in the past, negative repeat?", w->at > now));	1236	if (((WT)w)->at < mn_now)
		1237	((WT)w)->at = mn_now;
		1238
518	downheap ((WT *)timers, timercnt, 0);	1239	downheap (timers, timercnt, 0);
519	}	1240	}
520	else	1241	else
521	evtimer_stop (w); /* nonrepeating: stop timer */	1242	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
522	}
523	}
524		1243
525	static void	1244	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1245	}
		1246	}
		1247
		1248	#if EV_PERIODIC_ENABLE
		1249	void inline_size
526	periodics_reify (void)	1250	periodics_reify (EV_P)
527	{	1251	{
528	while (periodiccnt && periodics [0]->at <= ev_now)	1252	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
529	{	1253	{
530	struct ev_periodic *w = periodics [0];	1254	ev_periodic *w = (ev_periodic *)periodics [0];
		1255
		1256	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
531		1257
532	/* first reschedule or stop timer */	1258	/* first reschedule or stop timer */
533	if (w->interval)	1259	if (w->reschedule_cb)
534	{	1260	{
535	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
536	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1262	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
537	downheap ((WT *)periodics, periodiccnt, 0);	1263	downheap (periodics, periodiccnt, 0);
		1264	}
		1265	else if (w->interval)
		1266	{
		1267	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1268	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
		1269	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
		1270	downheap (periodics, periodiccnt, 0);
538	}	1271	}
539	else	1272	else
540	evperiodic_stop (w); /* nonrepeating: stop timer */	1273	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
541		1274
542	event ((W)w, EV_TIMEOUT);	1275	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
543	}	1276	}
544	}	1277	}
545		1278
546	static void	1279	static void noinline
547	periodics_reschedule (ev_tstamp diff)	1280	periodics_reschedule (EV_P)
548	{	1281	{
549	int i;	1282	int i;
550		1283
551	/* adjust periodics after time jump */	1284	/* adjust periodics after time jump */
552	for (i = 0; i < periodiccnt; ++i)	1285	for (i = 0; i < periodiccnt; ++i)
553	{	1286	{
554	struct ev_periodic *w = periodics [i];	1287	ev_periodic *w = (ev_periodic *)periodics [i];
555		1288
		1289	if (w->reschedule_cb)
		1290	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
556	if (w->interval)	1291	else if (w->interval)
		1292	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1293	}
		1294
		1295	/* now rebuild the heap */
		1296	for (i = periodiccnt >> 1; i--; )
		1297	downheap (periodics, periodiccnt, i);
		1298	}
		1299	#endif
		1300
		1301	#if EV_IDLE_ENABLE
		1302	void inline_size
		1303	idle_reify (EV_P)
		1304	{
		1305	if (expect_false (idleall))
		1306	{
		1307	int pri;
		1308
		1309	for (pri = NUMPRI; pri--; )
557	{	1310	{
558	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1311	if (pendingcnt [pri])
		1312	break;
559		1313
560	if (fabs (diff) >= 1e-4)	1314	if (idlecnt [pri])
561	{	1315	{
562	evperiodic_stop (w);	1316	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
563	evperiodic_start (w);	1317	break;
564
565	i = 0; /* restart loop, inefficient, but time jumps should be rare */
566	}	1318	}
567	}	1319	}
568	}	1320	}
569	}	1321	}
		1322	#endif
570		1323
571	static void	1324	void inline_speed
572	time_update (void)	1325	time_update (EV_P_ ev_tstamp max_block)
573	{	1326	{
574	int i;	1327	int i;
575		1328
576	ev_now = ev_time ();	1329	#if EV_USE_MONOTONIC
577
578	if (have_monotonic)	1330	if (expect_true (have_monotonic))
579	{	1331	{
580	ev_tstamp odiff = diff;	1332	ev_tstamp odiff = rtmn_diff;
581		1333
582	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1334	mn_now = get_clock ();
		1335
		1336	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1337	/* interpolate in the meantime */
		1338	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
583	{	1339	{
584	now = get_clock ();	1340	ev_rt_now = rtmn_diff + mn_now;
		1341	return;
		1342	}
		1343
		1344	now_floor = mn_now;
		1345	ev_rt_now = ev_time ();
		1346
		1347	/* loop a few times, before making important decisions.
		1348	* on the choice of "4": one iteration isn't enough,
		1349	* in case we get preempted during the calls to
		1350	* ev_time and get_clock. a second call is almost guaranteed
		1351	* to succeed in that case, though. and looping a few more times
		1352	* doesn't hurt either as we only do this on time-jumps or
		1353	* in the unlikely event of having been preempted here.
		1354	*/
		1355	for (i = 4; --i; )
		1356	{
585	diff = ev_now - now;	1357	rtmn_diff = ev_rt_now - mn_now;
586		1358
587	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1359	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
588	return; /* all is well */	1360	return; /* all is well */
589		1361
590	ev_now = ev_time ();	1362	ev_rt_now = ev_time ();
		1363	mn_now = get_clock ();
		1364	now_floor = mn_now;
591	}	1365	}
592		1366
		1367	# if EV_PERIODIC_ENABLE
593	periodics_reschedule (diff - odiff);	1368	periodics_reschedule (EV_A);
		1369	# endif
594	/* no timer adjustment, as the monotonic clock doesn't jump */	1370	/* no timer adjustment, as the monotonic clock doesn't jump */
		1371	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
595	}	1372	}
596	else	1373	else
		1374	#endif
597	{	1375	{
598	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	1376	ev_rt_now = ev_time ();
		1377
		1378	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
599	{	1379	{
		1380	#if EV_PERIODIC_ENABLE
600	periodics_reschedule (ev_now - now);	1381	periodics_reschedule (EV_A);
601		1382	#endif
602	/* adjust timers. this is easy, as the offset is the same for all */	1383	/* adjust timers. this is easy, as the offset is the same for all of them */
603	for (i = 0; i < timercnt; ++i)	1384	for (i = 0; i < timercnt; ++i)
604	timers [i]->at += diff;	1385	((WT)timers [i])->at += ev_rt_now - mn_now;
605	}	1386	}
606		1387
607	now = ev_now;	1388	mn_now = ev_rt_now;
608	}	1389	}
609	}	1390	}
610		1391
611	int ev_loop_done;	1392	void
		1393	ev_ref (EV_P)
		1394	{
		1395	++activecnt;
		1396	}
612		1397
		1398	void
		1399	ev_unref (EV_P)
		1400	{
		1401	--activecnt;
		1402	}
		1403
		1404	static int loop_done;
		1405
		1406	void
613	void ev_loop (int flags)	1407	ev_loop (EV_P_ int flags)
614	{	1408	{
615	double block;	1409	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
616	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	1410	? EVUNLOOP_ONE
		1411	: EVUNLOOP_CANCEL;
		1412
		1413	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
617		1414
618	do	1415	do
619	{	1416	{
		1417	#ifndef _WIN32
		1418	if (expect_false (curpid)) /* penalise the forking check even more */
		1419	if (expect_false (getpid () != curpid))
		1420	{
		1421	curpid = getpid ();
		1422	postfork = 1;
		1423	}
		1424	#endif
		1425
		1426	#if EV_FORK_ENABLE
		1427	/* we might have forked, so queue fork handlers */
		1428	if (expect_false (postfork))
		1429	if (forkcnt)
		1430	{
		1431	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1432	call_pending (EV_A);
		1433	}
		1434	#endif
		1435
620	/* queue check watchers (and execute them) */	1436	/* queue prepare watchers (and execute them) */
621	if (preparecnt)	1437	if (expect_false (preparecnt))
622	{	1438	{
623	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1439	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
624	call_pending ();	1440	call_pending (EV_A);
625	}	1441	}
626		1442
		1443	if (expect_false (!activecnt))
		1444	break;
		1445
		1446	/* we might have forked, so reify kernel state if necessary */
		1447	if (expect_false (postfork))
		1448	loop_fork (EV_A);
		1449
627	/* update fd-related kernel structures */	1450	/* update fd-related kernel structures */
628	fd_reify ();	1451	fd_reify (EV_A);
629		1452
630	/* calculate blocking time */	1453	/* calculate blocking time */
		1454	{
		1455	ev_tstamp block;
631		1456
632	/* we only need this for !monotonic clockor timers, but as we basically	1457	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
633	always have timers, we just calculate it always */	1458	block = 0.; /* do not block at all */
634	ev_now = ev_time ();
635
636	if (flags & EVLOOP_NONBLOCK || idlecnt)
637	block = 0.;
638	else	1459	else
639	{	1460	{
		1461	/* update time to cancel out callback processing overhead */
		1462	time_update (EV_A_ 1e100);
		1463
640	block = MAX_BLOCKTIME;	1464	block = MAX_BLOCKTIME;
641		1465
642	if (timercnt)	1466	if (timercnt)
643	{	1467	{
644	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1468	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
645	if (block > to) block = to;	1469	if (block > to) block = to;
646	}	1470	}
647		1471
		1472	#if EV_PERIODIC_ENABLE
648	if (periodiccnt)	1473	if (periodiccnt)
649	{	1474	{
650	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1475	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
651	if (block > to) block = to;	1476	if (block > to) block = to;
652	}	1477	}
		1478	#endif
653		1479
654	if (block < 0.) block = 0.;	1480	if (expect_false (block < 0.)) block = 0.;
655	}	1481	}
656		1482
657	method_poll (block);	1483	++loop_count;
		1484	backend_poll (EV_A_ block);
658		1485
659	/* update ev_now, do magic */	1486	/* update ev_rt_now, do magic */
660	time_update ();	1487	time_update (EV_A_ block);
		1488	}
661		1489
662	/* queue pending timers and reschedule them */	1490	/* queue pending timers and reschedule them */
663	timers_reify (); /* relative timers called last */	1491	timers_reify (EV_A); /* relative timers called last */
		1492	#if EV_PERIODIC_ENABLE
664	periodics_reify (); /* absolute timers called first */	1493	periodics_reify (EV_A); /* absolute timers called first */
		1494	#endif
665		1495
		1496	#if EV_IDLE_ENABLE
666	/* queue idle watchers unless io or timers are pending */	1497	/* queue idle watchers unless other events are pending */
667	if (!pendingcnt)	1498	idle_reify (EV_A);
668	queue_events ((W *)idles, idlecnt, EV_IDLE);	1499	#endif
669		1500
670	/* queue check watchers, to be executed first */	1501	/* queue check watchers, to be executed first */
671	if (checkcnt)	1502	if (expect_false (checkcnt))
672	queue_events ((W *)checks, checkcnt, EV_CHECK);	1503	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
673		1504
674	call_pending ();	1505	call_pending (EV_A);
675	}
676	while (!ev_loop_done);
677		1506
678	if (ev_loop_done != 2)	1507	}
		1508	while (expect_true (activecnt && !loop_done));
		1509
		1510	if (loop_done == EVUNLOOP_ONE)
		1511	loop_done = EVUNLOOP_CANCEL;
		1512	}
		1513
		1514	void
		1515	ev_unloop (EV_P_ int how)
		1516	{
679	ev_loop_done = 0;	1517	loop_done = how;
680	}	1518	}
681		1519
682	/*****************************************************************************/	1520	/*****************************************************************************/
683		1521
684	static void	1522	void inline_size
685	wlist_add (WL *head, WL elem)	1523	wlist_add (WL *head, WL elem)
686	{	1524	{
687	elem->next = *head;	1525	elem->next = *head;
688	*head = elem;	1526	*head = elem;
689	}	1527	}
690		1528
691	static void	1529	void inline_size
692	wlist_del (WL *head, WL elem)	1530	wlist_del (WL *head, WL elem)
693	{	1531	{
694	while (*head)	1532	while (*head)
695	{	1533	{
696	if (*head == elem)	1534	if (*head == elem)
…		…
701		1539
702	head = &(*head)->next;	1540	head = &(*head)->next;
703	}	1541	}
704	}	1542	}
705		1543
706	static void	1544	void inline_speed
707	ev_clear (W w)	1545	clear_pending (EV_P_ W w)
708	{	1546	{
709	if (w->pending)	1547	if (w->pending)
710	{	1548	{
711	pendings [w->pending - 1].w = 0;	1549	pendings [ABSPRI (w)][w->pending - 1].w = 0;
712	w->pending = 0;	1550	w->pending = 0;
713	}	1551	}
714	}	1552	}
715		1553
716	static void	1554	int
		1555	ev_clear_pending (EV_P_ void *w)
		1556	{
		1557	W w_ = (W)w;
		1558	int pending = w_->pending;
		1559
		1560	if (expect_true (pending))
		1561	{
		1562	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1563	w_->pending = 0;
		1564	p->w = 0;
		1565	return p->events;
		1566	}
		1567	else
		1568	return 0;
		1569	}
		1570
		1571	void inline_size
		1572	pri_adjust (EV_P_ W w)
		1573	{
		1574	int pri = w->priority;
		1575	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1576	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1577	w->priority = pri;
		1578	}
		1579
		1580	void inline_speed
717	ev_start (W w, int active)	1581	ev_start (EV_P_ W w, int active)
718	{	1582	{
		1583	pri_adjust (EV_A_ w);
719	w->active = active;	1584	w->active = active;
		1585	ev_ref (EV_A);
720	}	1586	}
721		1587
722	static void	1588	void inline_size
723	ev_stop (W w)	1589	ev_stop (EV_P_ W w)
724	{	1590	{
		1591	ev_unref (EV_A);
725	w->active = 0;	1592	w->active = 0;
726	}	1593	}
727		1594
728	/*****************************************************************************/	1595	/*****************************************************************************/
729		1596
730	void	1597	void noinline
731	evio_start (struct ev_io *w)	1598	ev_io_start (EV_P_ ev_io *w)
732	{	1599	{
733	if (ev_is_active (w))
734	return;
735
736	int fd = w->fd;	1600	int fd = w->fd;
737		1601
		1602	if (expect_false (ev_is_active (w)))
		1603	return;
		1604
		1605	assert (("ev_io_start called with negative fd", fd >= 0));
		1606
738	ev_start ((W)w, 1);	1607	ev_start (EV_A_ (W)w, 1);
739	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1608	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
740	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1609	wlist_add (&anfds[fd].head, (WL)w);
741		1610
742	++fdchangecnt;	1611	fd_change (EV_A_ fd, w->events & EV_IOFDSET | 1);
743	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	1612	w->events &= ~EV_IOFDSET;
744	fdchanges [fdchangecnt - 1] = fd;
745
746	if (w->fd == 9)
747	printf ("start %p:%x\n", w, w->events);//D
748	}	1613	}
749		1614
750	void	1615	void noinline
751	evio_stop (struct ev_io *w)	1616	ev_io_stop (EV_P_ ev_io *w)
752	{	1617	{
753	if (w->fd == 9)	1618	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))	1619	if (expect_false (!ev_is_active (w)))
757	return;	1620	return;
758		1621
		1622	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1623
759	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1624	wlist_del (&anfds[w->fd].head, (WL)w);
760	ev_stop ((W)w);	1625	ev_stop (EV_A_ (W)w);
761		1626
762	++fdchangecnt;	1627	fd_change (EV_A_ w->fd, 1);
763	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
764	fdchanges [fdchangecnt - 1] = w->fd;
765	}	1628	}
766		1629
767	void	1630	void noinline
768	evtimer_start (struct ev_timer *w)	1631	ev_timer_start (EV_P_ ev_timer *w)
769	{	1632	{
770	if (ev_is_active (w))	1633	if (expect_false (ev_is_active (w)))
771	return;	1634	return;
772		1635
773	w->at += now;	1636	((WT)w)->at += mn_now;
774		1637
775	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1638	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
776		1639
777	ev_start ((W)w, ++timercnt);	1640	ev_start (EV_A_ (W)w, ++timercnt);
778	array_needsize (timers, timermax, timercnt, );	1641	array_needsize (WT, timers, timermax, timercnt, EMPTY2);
779	timers [timercnt - 1] = w;	1642	timers [timercnt - 1] = (WT)w;
780	upheap ((WT *)timers, timercnt - 1);	1643	upheap (timers, timercnt - 1);
781	}
782		1644
783	void	1645	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1646	}
		1647
		1648	void noinline
784	evtimer_stop (struct ev_timer *w)	1649	ev_timer_stop (EV_P_ ev_timer *w)
785	{	1650	{
786	ev_clear ((W)w);	1651	clear_pending (EV_A_ (W)w);
787	if (!ev_is_active (w))	1652	if (expect_false (!ev_is_active (w)))
788	return;	1653	return;
789		1654
790	if (w->active < timercnt--)	1655	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == (WT)w));
		1656
		1657	{
		1658	int active = ((W)w)->active;
		1659
		1660	if (expect_true (--active < --timercnt))
791	{	1661	{
792	timers [w->active - 1] = timers [timercnt];	1662	timers [active] = timers [timercnt];
793	downheap ((WT *)timers, timercnt, w->active - 1);	1663	adjustheap (timers, timercnt, active);
794	}	1664	}
		1665	}
795		1666
796	w->at = w->repeat;	1667	((WT)w)->at -= mn_now;
797		1668
798	ev_stop ((W)w);	1669	ev_stop (EV_A_ (W)w);
799	}	1670	}
800		1671
801	void	1672	void noinline
802	evtimer_again (struct ev_timer *w)	1673	ev_timer_again (EV_P_ ev_timer *w)
803	{	1674	{
804	if (ev_is_active (w))	1675	if (ev_is_active (w))
805	{	1676	{
806	if (w->repeat)	1677	if (w->repeat)
807	{	1678	{
808	w->at = now + w->repeat;	1679	((WT)w)->at = mn_now + w->repeat;
809	downheap ((WT *)timers, timercnt, w->active - 1);	1680	adjustheap (timers, timercnt, ((W)w)->active - 1);
810	}	1681	}
811	else	1682	else
812	evtimer_stop (w);	1683	ev_timer_stop (EV_A_ w);
813	}	1684	}
814	else if (w->repeat)	1685	else if (w->repeat)
		1686	{
		1687	w->at = w->repeat;
815	evtimer_start (w);	1688	ev_timer_start (EV_A_ w);
		1689	}
816	}	1690	}
817		1691
818	void	1692	#if EV_PERIODIC_ENABLE
		1693	void noinline
819	evperiodic_start (struct ev_periodic *w)	1694	ev_periodic_start (EV_P_ ev_periodic *w)
820	{	1695	{
821	if (ev_is_active (w))	1696	if (expect_false (ev_is_active (w)))
822	return;	1697	return;
823		1698
824	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1699	if (w->reschedule_cb)
825		1700	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1701	else if (w->interval)
		1702	{
		1703	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 */	1704	/* 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;	1705	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1706	}
		1707	else
		1708	((WT)w)->at = w->offset;
829		1709
830	ev_start ((W)w, ++periodiccnt);	1710	ev_start (EV_A_ (W)w, ++periodiccnt);
831	array_needsize (periodics, periodicmax, periodiccnt, );	1711	array_needsize (WT, periodics, periodicmax, periodiccnt, EMPTY2);
832	periodics [periodiccnt - 1] = w;	1712	periodics [periodiccnt - 1] = (WT)w;
833	upheap ((WT *)periodics, periodiccnt - 1);	1713	upheap (periodics, periodiccnt - 1);
834	}
835		1714
836	void	1715	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1716	}
		1717
		1718	void noinline
837	evperiodic_stop (struct ev_periodic *w)	1719	ev_periodic_stop (EV_P_ ev_periodic *w)
838	{	1720	{
839	ev_clear ((W)w);	1721	clear_pending (EV_A_ (W)w);
840	if (!ev_is_active (w))	1722	if (expect_false (!ev_is_active (w)))
841	return;	1723	return;
842		1724
843	if (w->active < periodiccnt--)	1725	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == (WT)w));
		1726
		1727	{
		1728	int active = ((W)w)->active;
		1729
		1730	if (expect_true (--active < --periodiccnt))
844	{	1731	{
845	periodics [w->active - 1] = periodics [periodiccnt];	1732	periodics [active] = periodics [periodiccnt];
846	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1733	adjustheap (periodics, periodiccnt, active);
847	}	1734	}
		1735	}
848		1736
849	ev_stop ((W)w);	1737	ev_stop (EV_A_ (W)w);
850	}	1738	}
851		1739
852	void	1740	void noinline
		1741	ev_periodic_again (EV_P_ ev_periodic *w)
		1742	{
		1743	/* TODO: use adjustheap and recalculation */
		1744	ev_periodic_stop (EV_A_ w);
		1745	ev_periodic_start (EV_A_ w);
		1746	}
		1747	#endif
		1748
		1749	#ifndef SA_RESTART
		1750	# define SA_RESTART 0
		1751	#endif
		1752
		1753	void noinline
853	evsignal_start (struct ev_signal *w)	1754	ev_signal_start (EV_P_ ev_signal *w)
854	{	1755	{
		1756	#if EV_MULTIPLICITY
		1757	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1758	#endif
855	if (ev_is_active (w))	1759	if (expect_false (ev_is_active (w)))
856	return;	1760	return;
857		1761
858	ev_start ((W)w, 1);	1762	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1763
		1764	{
		1765	#ifndef _WIN32
		1766	sigset_t full, prev;
		1767	sigfillset (&full);
		1768	sigprocmask (SIG_SETMASK, &full, &prev);
		1769	#endif
		1770
859	array_needsize (signals, signalmax, w->signum, signals_init);	1771	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1772
		1773	#ifndef _WIN32
		1774	sigprocmask (SIG_SETMASK, &prev, 0);
		1775	#endif
		1776	}
		1777
		1778	ev_start (EV_A_ (W)w, 1);
860	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1779	wlist_add (&signals [w->signum - 1].head, (WL)w);
861		1780
862	if (!w->next)	1781	if (!((WL)w)->next)
863	{	1782	{
		1783	#if _WIN32
		1784	signal (w->signum, sighandler);
		1785	#else
864	struct sigaction sa;	1786	struct sigaction sa;
865	sa.sa_handler = sighandler;	1787	sa.sa_handler = sighandler;
866	sigfillset (&sa.sa_mask);	1788	sigfillset (&sa.sa_mask);
867	sa.sa_flags = 0;	1789	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
868	sigaction (w->signum, &sa, 0);	1790	sigaction (w->signum, &sa, 0);
		1791	#endif
869	}	1792	}
870	}	1793	}
871		1794
872	void	1795	void noinline
873	evsignal_stop (struct ev_signal *w)	1796	ev_signal_stop (EV_P_ ev_signal *w)
874	{	1797	{
875	ev_clear ((W)w);	1798	clear_pending (EV_A_ (W)w);
876	if (!ev_is_active (w))	1799	if (expect_false (!ev_is_active (w)))
877	return;	1800	return;
878		1801
879	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1802	wlist_del (&signals [w->signum - 1].head, (WL)w);
880	ev_stop ((W)w);	1803	ev_stop (EV_A_ (W)w);
881		1804
882	if (!signals [w->signum - 1].head)	1805	if (!signals [w->signum - 1].head)
883	signal (w->signum, SIG_DFL);	1806	signal (w->signum, SIG_DFL);
884	}	1807	}
885		1808
886	void evidle_start (struct ev_idle *w)	1809	void
		1810	ev_child_start (EV_P_ ev_child *w)
887	{	1811	{
		1812	#if EV_MULTIPLICITY
		1813	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1814	#endif
888	if (ev_is_active (w))	1815	if (expect_false (ev_is_active (w)))
889	return;	1816	return;
890		1817
891	ev_start ((W)w, ++idlecnt);	1818	ev_start (EV_A_ (W)w, 1);
892	array_needsize (idles, idlemax, idlecnt, );	1819	wlist_add (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
893	idles [idlecnt - 1] = w;
894	}	1820	}
895		1821
896	void evidle_stop (struct ev_idle *w)	1822	void
		1823	ev_child_stop (EV_P_ ev_child *w)
897	{	1824	{
898	ev_clear ((W)w);	1825	clear_pending (EV_A_ (W)w);
899	if (ev_is_active (w))	1826	if (expect_false (!ev_is_active (w)))
900	return;	1827	return;
901		1828
902	idles [w->active - 1] = idles [--idlecnt];	1829	wlist_del (&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
903	ev_stop ((W)w);	1830	ev_stop (EV_A_ (W)w);
904	}	1831	}
905		1832
		1833	#if EV_STAT_ENABLE
		1834
		1835	# ifdef _WIN32
		1836	# undef lstat
		1837	# define lstat(a,b) _stati64 (a,b)
		1838	# endif
		1839
		1840	#define DEF_STAT_INTERVAL 5.0074891
		1841	#define MIN_STAT_INTERVAL 0.1074891
		1842
		1843	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1844
		1845	#if EV_USE_INOTIFY
		1846	# define EV_INOTIFY_BUFSIZE 8192
		1847
		1848	static void noinline
		1849	infy_add (EV_P_ ev_stat *w)
		1850	{
		1851	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);
		1852
		1853	if (w->wd < 0)
		1854	{
		1855	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1856
		1857	/* monitor some parent directory for speedup hints */
		1858	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1859	{
		1860	char path [4096];
		1861	strcpy (path, w->path);
		1862
		1863	do
		1864	{
		1865	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1866	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1867
		1868	char *pend = strrchr (path, '/');
		1869
		1870	if (!pend)
		1871	break; /* whoops, no '/', complain to your admin */
		1872
		1873	*pend = 0;
		1874	w->wd = inotify_add_watch (fs_fd, path, mask);
		1875	}
		1876	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1877	}
		1878	}
		1879	else
		1880	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1881
		1882	if (w->wd >= 0)
		1883	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1884	}
		1885
		1886	static void noinline
		1887	infy_del (EV_P_ ev_stat *w)
		1888	{
		1889	int slot;
		1890	int wd = w->wd;
		1891
		1892	if (wd < 0)
		1893	return;
		1894
		1895	w->wd = -2;
		1896	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1897	wlist_del (&fs_hash [slot].head, (WL)w);
		1898
		1899	/* remove this watcher, if others are watching it, they will rearm */
		1900	inotify_rm_watch (fs_fd, wd);
		1901	}
		1902
		1903	static void noinline
		1904	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1905	{
		1906	if (slot < 0)
		1907	/* overflow, need to check for all hahs slots */
		1908	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1909	infy_wd (EV_A_ slot, wd, ev);
		1910	else
		1911	{
		1912	WL w_;
		1913
		1914	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1915	{
		1916	ev_stat *w = (ev_stat *)w_;
		1917	w_ = w_->next; /* lets us remove this watcher and all before it */
		1918
		1919	if (w->wd == wd || wd == -1)
		1920	{
		1921	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1922	{
		1923	w->wd = -1;
		1924	infy_add (EV_A_ w); /* re-add, no matter what */
		1925	}
		1926
		1927	stat_timer_cb (EV_A_ &w->timer, 0);
		1928	}
		1929	}
		1930	}
		1931	}
		1932
		1933	static void
		1934	infy_cb (EV_P_ ev_io *w, int revents)
		1935	{
		1936	char buf [EV_INOTIFY_BUFSIZE];
		1937	struct inotify_event *ev = (struct inotify_event *)buf;
		1938	int ofs;
		1939	int len = read (fs_fd, buf, sizeof (buf));
		1940
		1941	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1942	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1943	}
		1944
		1945	void inline_size
		1946	infy_init (EV_P)
		1947	{
		1948	if (fs_fd != -2)
		1949	return;
		1950
		1951	fs_fd = inotify_init ();
		1952
		1953	if (fs_fd >= 0)
		1954	{
		1955	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1956	ev_set_priority (&fs_w, EV_MAXPRI);
		1957	ev_io_start (EV_A_ &fs_w);
		1958	}
		1959	}
		1960
		1961	void inline_size
		1962	infy_fork (EV_P)
		1963	{
		1964	int slot;
		1965
		1966	if (fs_fd < 0)
		1967	return;
		1968
		1969	close (fs_fd);
		1970	fs_fd = inotify_init ();
		1971
		1972	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1973	{
		1974	WL w_ = fs_hash [slot].head;
		1975	fs_hash [slot].head = 0;
		1976
		1977	while (w_)
		1978	{
		1979	ev_stat *w = (ev_stat *)w_;
		1980	w_ = w_->next; /* lets us add this watcher */
		1981
		1982	w->wd = -1;
		1983
		1984	if (fs_fd >= 0)
		1985	infy_add (EV_A_ w); /* re-add, no matter what */
		1986	else
		1987	ev_timer_start (EV_A_ &w->timer);
		1988	}
		1989
		1990	}
		1991	}
		1992
		1993	#endif
		1994
		1995	void
		1996	ev_stat_stat (EV_P_ ev_stat *w)
		1997	{
		1998	if (lstat (w->path, &w->attr) < 0)
		1999	w->attr.st_nlink = 0;
		2000	else if (!w->attr.st_nlink)
		2001	w->attr.st_nlink = 1;
		2002	}
		2003
		2004	static void noinline
		2005	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		2006	{
		2007	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2008
		2009	/* we copy this here each the time so that */
		2010	/* prev has the old value when the callback gets invoked */
		2011	w->prev = w->attr;
		2012	ev_stat_stat (EV_A_ w);
		2013
		2014	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2015	if (
		2016	w->prev.st_dev != w->attr.st_dev
		2017	|| w->prev.st_ino != w->attr.st_ino
		2018	|| w->prev.st_mode != w->attr.st_mode
		2019	|| w->prev.st_nlink != w->attr.st_nlink
		2020	|| w->prev.st_uid != w->attr.st_uid
		2021	|| w->prev.st_gid != w->attr.st_gid
		2022	|| w->prev.st_rdev != w->attr.st_rdev
		2023	|| w->prev.st_size != w->attr.st_size
		2024	|| w->prev.st_atime != w->attr.st_atime
		2025	|| w->prev.st_mtime != w->attr.st_mtime
		2026	|| w->prev.st_ctime != w->attr.st_ctime
		2027	) {
		2028	#if EV_USE_INOTIFY
		2029	infy_del (EV_A_ w);
		2030	infy_add (EV_A_ w);
		2031	ev_stat_stat (EV_A_ w); /* avoid race... */
		2032	#endif
		2033
		2034	ev_feed_event (EV_A_ w, EV_STAT);
		2035	}
		2036	}
		2037
		2038	void
		2039	ev_stat_start (EV_P_ ev_stat *w)
		2040	{
		2041	if (expect_false (ev_is_active (w)))
		2042	return;
		2043
		2044	/* since we use memcmp, we need to clear any padding data etc. */
		2045	memset (&w->prev, 0, sizeof (ev_statdata));
		2046	memset (&w->attr, 0, sizeof (ev_statdata));
		2047
		2048	ev_stat_stat (EV_A_ w);
		2049
		2050	if (w->interval < MIN_STAT_INTERVAL)
		2051	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2052
		2053	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2054	ev_set_priority (&w->timer, ev_priority (w));
		2055
		2056	#if EV_USE_INOTIFY
		2057	infy_init (EV_A);
		2058
		2059	if (fs_fd >= 0)
		2060	infy_add (EV_A_ w);
		2061	else
		2062	#endif
		2063	ev_timer_start (EV_A_ &w->timer);
		2064
		2065	ev_start (EV_A_ (W)w, 1);
		2066	}
		2067
		2068	void
		2069	ev_stat_stop (EV_P_ ev_stat *w)
		2070	{
		2071	clear_pending (EV_A_ (W)w);
		2072	if (expect_false (!ev_is_active (w)))
		2073	return;
		2074
		2075	#if EV_USE_INOTIFY
		2076	infy_del (EV_A_ w);
		2077	#endif
		2078	ev_timer_stop (EV_A_ &w->timer);
		2079
		2080	ev_stop (EV_A_ (W)w);
		2081	}
		2082	#endif
		2083
		2084	#if EV_IDLE_ENABLE
		2085	void
		2086	ev_idle_start (EV_P_ ev_idle *w)
		2087	{
		2088	if (expect_false (ev_is_active (w)))
		2089	return;
		2090
		2091	pri_adjust (EV_A_ (W)w);
		2092
		2093	{
		2094	int active = ++idlecnt [ABSPRI (w)];
		2095
		2096	++idleall;
		2097	ev_start (EV_A_ (W)w, active);
		2098
		2099	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2100	idles [ABSPRI (w)][active - 1] = w;
		2101	}
		2102	}
		2103
		2104	void
		2105	ev_idle_stop (EV_P_ ev_idle *w)
		2106	{
		2107	clear_pending (EV_A_ (W)w);
		2108	if (expect_false (!ev_is_active (w)))
		2109	return;
		2110
		2111	{
		2112	int active = ((W)w)->active;
		2113
		2114	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2115	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2116
		2117	ev_stop (EV_A_ (W)w);
		2118	--idleall;
		2119	}
		2120	}
		2121	#endif
		2122
		2123	void
906	void evprepare_start (struct ev_prepare *w)	2124	ev_prepare_start (EV_P_ ev_prepare *w)
907	{	2125	{
908	if (ev_is_active (w))	2126	if (expect_false (ev_is_active (w)))
909	return;	2127	return;
910		2128
911	ev_start ((W)w, ++preparecnt);	2129	ev_start (EV_A_ (W)w, ++preparecnt);
912	array_needsize (prepares, preparemax, preparecnt, );	2130	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
913	prepares [preparecnt - 1] = w;	2131	prepares [preparecnt - 1] = w;
914	}	2132	}
915		2133
		2134	void
916	void evprepare_stop (struct ev_prepare *w)	2135	ev_prepare_stop (EV_P_ ev_prepare *w)
917	{	2136	{
918	ev_clear ((W)w);	2137	clear_pending (EV_A_ (W)w);
919	if (ev_is_active (w))	2138	if (expect_false (!ev_is_active (w)))
920	return;	2139	return;
921		2140
		2141	{
		2142	int active = ((W)w)->active;
922	prepares [w->active - 1] = prepares [--preparecnt];	2143	prepares [active - 1] = prepares [--preparecnt];
		2144	((W)prepares [active - 1])->active = active;
		2145	}
		2146
923	ev_stop ((W)w);	2147	ev_stop (EV_A_ (W)w);
924	}	2148	}
925		2149
		2150	void
926	void evcheck_start (struct ev_check *w)	2151	ev_check_start (EV_P_ ev_check *w)
927	{	2152	{
928	if (ev_is_active (w))	2153	if (expect_false (ev_is_active (w)))
929	return;	2154	return;
930		2155
931	ev_start ((W)w, ++checkcnt);	2156	ev_start (EV_A_ (W)w, ++checkcnt);
932	array_needsize (checks, checkmax, checkcnt, );	2157	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
933	checks [checkcnt - 1] = w;	2158	checks [checkcnt - 1] = w;
934	}	2159	}
935		2160
		2161	void
936	void evcheck_stop (struct ev_check *w)	2162	ev_check_stop (EV_P_ ev_check *w)
937	{	2163	{
938	ev_clear ((W)w);	2164	clear_pending (EV_A_ (W)w);
939	if (ev_is_active (w))	2165	if (expect_false (!ev_is_active (w)))
940	return;	2166	return;
941		2167
		2168	{
		2169	int active = ((W)w)->active;
942	checks [w->active - 1] = checks [--checkcnt];	2170	checks [active - 1] = checks [--checkcnt];
		2171	((W)checks [active - 1])->active = active;
		2172	}
		2173
943	ev_stop ((W)w);	2174	ev_stop (EV_A_ (W)w);
944	}	2175	}
945		2176
946	void evchild_start (struct ev_child *w)	2177	#if EV_EMBED_ENABLE
		2178	void noinline
		2179	ev_embed_sweep (EV_P_ ev_embed *w)
947	{	2180	{
		2181	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2182	}
		2183
		2184	static void
		2185	embed_cb (EV_P_ ev_io *io, int revents)
		2186	{
		2187	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2188
948	if (ev_is_active (w))	2189	if (ev_cb (w))
949	return;	2190	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2191	else
		2192	ev_embed_sweep (loop, w);
		2193	}
950		2194
		2195	void
		2196	ev_embed_start (EV_P_ ev_embed *w)
		2197	{
		2198	if (expect_false (ev_is_active (w)))
		2199	return;
		2200
		2201	{
		2202	struct ev_loop *loop = w->loop;
		2203	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2204	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2205	}
		2206
		2207	ev_set_priority (&w->io, ev_priority (w));
		2208	ev_io_start (EV_A_ &w->io);
		2209
951	ev_start ((W)w, 1);	2210	ev_start (EV_A_ (W)w, 1);
952	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
953	}	2211	}
954		2212
955	void evchild_stop (struct ev_child *w)	2213	void
		2214	ev_embed_stop (EV_P_ ev_embed *w)
956	{	2215	{
957	ev_clear ((W)w);	2216	clear_pending (EV_A_ (W)w);
958	if (ev_is_active (w))	2217	if (expect_false (!ev_is_active (w)))
959	return;	2218	return;
960		2219
961	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2220	ev_io_stop (EV_A_ &w->io);
		2221
962	ev_stop ((W)w);	2222	ev_stop (EV_A_ (W)w);
963	}	2223	}
		2224	#endif
		2225
		2226	#if EV_FORK_ENABLE
		2227	void
		2228	ev_fork_start (EV_P_ ev_fork *w)
		2229	{
		2230	if (expect_false (ev_is_active (w)))
		2231	return;
		2232
		2233	ev_start (EV_A_ (W)w, ++forkcnt);
		2234	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2235	forks [forkcnt - 1] = w;
		2236	}
		2237
		2238	void
		2239	ev_fork_stop (EV_P_ ev_fork *w)
		2240	{
		2241	clear_pending (EV_A_ (W)w);
		2242	if (expect_false (!ev_is_active (w)))
		2243	return;
		2244
		2245	{
		2246	int active = ((W)w)->active;
		2247	forks [active - 1] = forks [--forkcnt];
		2248	((W)forks [active - 1])->active = active;
		2249	}
		2250
		2251	ev_stop (EV_A_ (W)w);
		2252	}
		2253	#endif
964		2254
965	/*****************************************************************************/	2255	/*****************************************************************************/
966		2256
967	struct ev_once	2257	struct ev_once
968	{	2258	{
969	struct ev_io io;	2259	ev_io io;
970	struct ev_timer to;	2260	ev_timer to;
971	void (*cb)(int revents, void *arg);	2261	void (*cb)(int revents, void *arg);
972	void *arg;	2262	void *arg;
973	};	2263	};
974		2264
975	static void	2265	static void
976	once_cb (struct ev_once *once, int revents)	2266	once_cb (EV_P_ struct ev_once *once, int revents)
977	{	2267	{
978	void (*cb)(int revents, void *arg) = once->cb;	2268	void (*cb)(int revents, void *arg) = once->cb;
979	void *arg = once->arg;	2269	void *arg = once->arg;
980		2270
981	evio_stop (&once->io);	2271	ev_io_stop (EV_A_ &once->io);
982	evtimer_stop (&once->to);	2272	ev_timer_stop (EV_A_ &once->to);
983	free (once);	2273	ev_free (once);
984		2274
985	cb (revents, arg);	2275	cb (revents, arg);
986	}	2276	}
987		2277
988	static void	2278	static void
989	once_cb_io (struct ev_io *w, int revents)	2279	once_cb_io (EV_P_ ev_io *w, int revents)
990	{	2280	{
991	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2281	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
992	}	2282	}
993		2283
994	static void	2284	static void
995	once_cb_to (struct ev_timer *w, int revents)	2285	once_cb_to (EV_P_ ev_timer *w, int revents)
996	{	2286	{
997	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2287	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
998	}	2288	}
999		2289
1000	void	2290	void
1001	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2291	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1002	{	2292	{
1003	struct ev_once *once = malloc (sizeof (struct ev_once));	2293	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1004		2294
1005	if (!once)	2295	if (expect_false (!once))
1006	cb (EV_ERROR, arg);	2296	{
1007	else	2297	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
		2298	return;
1008	{	2299	}
		2300
1009	once->cb = cb;	2301	once->cb = cb;
1010	once->arg = arg;	2302	once->arg = arg;
1011		2303
1012	evw_init (&once->io, once_cb_io);	2304	ev_init (&once->io, once_cb_io);
1013
1014	if (fd >= 0)	2305	if (fd >= 0)
1015	{	2306	{
1016	evio_set (&once->io, fd, events);	2307	ev_io_set (&once->io, fd, events);
1017	evio_start (&once->io);	2308	ev_io_start (EV_A_ &once->io);
1018	}	2309	}
1019		2310
1020	evw_init (&once->to, once_cb_to);	2311	ev_init (&once->to, once_cb_to);
1021
1022	if (timeout >= 0.)	2312	if (timeout >= 0.)
1023	{	2313	{
1024	evtimer_set (&once->to, timeout, 0.);	2314	ev_timer_set (&once->to, timeout, 0.);
1025	evtimer_start (&once->to);	2315	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	{	2316	}
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	}	2317	}
1107		2318
		2319	#ifdef __cplusplus
		2320	}
1108	#endif	2321	#endif
1109		2322
1110
1111
1112

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