ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.2 by root, Tue Oct 30 21:42:12 2007 UTC vs.
Revision 1.141 by root, Mon Nov 26 20:33:58 2007 UTC

		1	/*
		2	* libev event processing core, watcher management
		3	*
		4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
		5	* All rights reserved.
		6	*
		7	* Redistribution and use in source and binary forms, with or without
		8	* modification, are permitted provided that the following conditions are
		9	* met:
		10	*
		11	* * Redistributions of source code must retain the above copyright
		12	* notice, this list of conditions and the following disclaimer.
		13	*
		14	* * Redistributions in binary form must reproduce the above
		15	* copyright notice, this list of conditions and the following
		16	* disclaimer in the documentation and/or other materials provided
		17	* with the distribution.
		18	*
		19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
		20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
		21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
		22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
		23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
		24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
		25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
		29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		30	*/
		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	#endif
		100
1	#include <math.h>	101	#include <math.h>
2	#include <stdlib.h>	102	#include <stdlib.h>
		103	#include <fcntl.h>
		104	#include <stddef.h>
3		105
4	#include <stdio.h>	106	#include <stdio.h>
5		107
		108	#include <assert.h>
6	#include <errno.h>	109	#include <errno.h>
7	#include <sys/time.h>	110	#include <sys/types.h>
8	#include <time.h>	111	#include <time.h>
9		112
		113	#include <signal.h>
		114
		115	#ifndef _WIN32
		116	# include <sys/time.h>
		117	# include <sys/wait.h>
		118	# include <unistd.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
		124	# endif
		125	#endif
		126
		127	/**/
		128
		129	#ifndef EV_USE_MONOTONIC
		130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
		135	#endif
		136
		137	#ifndef EV_USE_SELECT
		138	# define EV_USE_SELECT 1
		139	#endif
		140
		141	#ifndef EV_USE_POLL
		142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
		147	#endif
		148
		149	#ifndef EV_USE_EPOLL
		150	# define EV_USE_EPOLL 0
		151	#endif
		152
		153	#ifndef EV_USE_KQUEUE
		154	# define EV_USE_KQUEUE 0
		155	#endif
		156
		157	#ifndef EV_USE_PORT
		158	# define EV_USE_PORT 0
		159	#endif
		160
		161	/**/
		162
10	#ifdef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
		164	# undef EV_USE_MONOTONIC
11	# define HAVE_MONOTONIC 1	165	# define EV_USE_MONOTONIC 0
12	#endif	166	#endif
13		167
14	#define HAVE_EPOLL 1	168	#ifndef CLOCK_REALTIME
		169	# undef EV_USE_REALTIME
15	#define HAVE_REALTIME 1	170	# define EV_USE_REALTIME 0
16	#define HAVE_SELECT 0	171	#endif
17		172
18	#define MAX_BLOCKTIME 60.	173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
19		176
		177	/**/
		178
		179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
		181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
20	#include "ev.h"	187	# include "ev.h"
		188	#endif
21		189
22	struct ev_watcher {	190	#if __GNUC__ >= 3
23	EV_WATCHER (ev_watcher);	191	# define expect(expr,value) __builtin_expect ((expr),(value))
24	};	192	# define inline_size static inline /* inline for codesize */
		193	# if EV_MINIMAL
		194	# define noinline __attribute__ ((noinline))
		195	# define inline_speed static noinline
		196	# else
		197	# define noinline
		198	# define inline_speed static inline
		199	# endif
		200	#else
		201	# define expect(expr,value) (expr)
		202	# define inline_speed static
		203	# define inline_minimal static
		204	# define noinline
		205	#endif
25		206
26	struct ev_watcher_list {	207	#define expect_false(expr) expect ((expr) != 0, 0)
27	EV_WATCHER_LIST (ev_watcher_list);	208	#define expect_true(expr) expect ((expr) != 0, 1)
28	};
29		209
		210	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		211	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		212
		213	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		214	#define EMPTY2(a,b) /* used to suppress some warnings */
		215
		216	typedef ev_watcher *W;
		217	typedef ev_watcher_list *WL;
		218	typedef ev_watcher_time *WT;
		219
		220	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		221
		222	#ifdef _WIN32
		223	# include "ev_win32.c"
		224	#endif
		225
		226	/*****************************************************************************/
		227
		228	static void (*syserr_cb)(const char *msg);
		229
		230	void
		231	ev_set_syserr_cb (void (*cb)(const char *msg))
		232	{
		233	syserr_cb = cb;
		234	}
		235
		236	static void noinline
		237	syserr (const char *msg)
		238	{
		239	if (!msg)
		240	msg = "(libev) system error";
		241
		242	if (syserr_cb)
		243	syserr_cb (msg);
		244	else
		245	{
		246	perror (msg);
		247	abort ();
		248	}
		249	}
		250
		251	static void *(*alloc)(void *ptr, long size);
		252
		253	void
		254	ev_set_allocator (void *(*cb)(void *ptr, long size))
		255	{
		256	alloc = cb;
		257	}
		258
		259	static void *
		260	ev_realloc (void *ptr, long size)
		261	{
		262	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		263
		264	if (!ptr && size)
		265	{
		266	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		267	abort ();
		268	}
		269
		270	return ptr;
		271	}
		272
		273	#define ev_malloc(size) ev_realloc (0, (size))
		274	#define ev_free(ptr) ev_realloc ((ptr), 0)
		275
		276	/*****************************************************************************/
		277
		278	typedef struct
		279	{
		280	WL head;
		281	unsigned char events;
		282	unsigned char reify;
		283	#if EV_SELECT_IS_WINSOCKET
		284	SOCKET handle;
		285	#endif
		286	} ANFD;
		287
		288	typedef struct
		289	{
		290	W w;
		291	int events;
		292	} ANPENDING;
		293
		294	#if EV_MULTIPLICITY
		295
		296	struct ev_loop
		297	{
		298	ev_tstamp ev_rt_now;
		299	#define ev_rt_now ((loop)->ev_rt_now)
		300	#define VAR(name,decl) decl;
		301	#include "ev_vars.h"
		302	#undef VAR
		303	};
		304	#include "ev_wrap.h"
		305
		306	static struct ev_loop default_loop_struct;
		307	struct ev_loop *ev_default_loop_ptr;
		308
		309	#else
		310
30	ev_tstamp ev_now;	311	ev_tstamp ev_rt_now;
31	int ev_method;	312	#define VAR(name,decl) static decl;
		313	#include "ev_vars.h"
		314	#undef VAR
32		315
33	static int have_monotonic; /* runtime */	316	static int ev_default_loop_ptr;
34		317
35	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	318	#endif
36	static void (*method_reify)(void);	319
37	static void (*method_poll)(ev_tstamp timeout);	320	/*****************************************************************************/
38		321
39	ev_tstamp	322	ev_tstamp
40	ev_time (void)	323	ev_time (void)
41	{	324	{
42	#if HAVE_REALTIME	325	#if EV_USE_REALTIME
43	struct timespec ts;	326	struct timespec ts;
44	clock_gettime (CLOCK_REALTIME, &ts);	327	clock_gettime (CLOCK_REALTIME, &ts);
45	return ts.tv_sec + ts.tv_nsec * 1e-9;	328	return ts.tv_sec + ts.tv_nsec * 1e-9;
46	#else	329	#else
47	struct timeval tv;	330	struct timeval tv;
48	gettimeofday (&tv, 0);	331	gettimeofday (&tv, 0);
49	return tv.tv_sec + tv.tv_usec * 1e-6;	332	return tv.tv_sec + tv.tv_usec * 1e-6;
50	#endif	333	#endif
51	}	334	}
52		335
53	static ev_tstamp	336	ev_tstamp inline_size
54	get_clock (void)	337	get_clock (void)
55	{	338	{
56	#if HAVE_MONOTONIC	339	#if EV_USE_MONOTONIC
57	if (have_monotonic)	340	if (expect_true (have_monotonic))
58	{	341	{
59	struct timespec ts;	342	struct timespec ts;
60	clock_gettime (CLOCK_MONOTONIC, &ts);	343	clock_gettime (CLOCK_MONOTONIC, &ts);
61	return ts.tv_sec + ts.tv_nsec * 1e-9;	344	return ts.tv_sec + ts.tv_nsec * 1e-9;
62	}	345	}
63	#endif	346	#endif
64		347
65	return ev_time ();	348	return ev_time ();
66	}	349	}
67		350
		351	#if EV_MULTIPLICITY
		352	ev_tstamp
		353	ev_now (EV_P)
		354	{
		355	return ev_rt_now;
		356	}
		357	#endif
		358
		359	#define array_roundsize(type,n) (((n) | 4) & ~3)
		360
68	#define array_needsize(base,cur,cnt,init) \	361	#define array_needsize(type,base,cur,cnt,init) \
69	if ((cnt) > cur) \	362	if (expect_false ((cnt) > cur)) \
70	{ \	363	{ \
71	int newcnt = cur ? cur << 1 : 16; \	364	int newcnt = cur; \
72	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	365	do \
		366	{ \
		367	newcnt = array_roundsize (type, newcnt << 1); \
		368	} \
		369	while ((cnt) > newcnt); \
		370	\
73	base = realloc (base, sizeof (*base) * (newcnt)); \	371	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
74	init (base + cur, newcnt - cur); \	372	init (base + cur, newcnt - cur); \
75	cur = newcnt; \	373	cur = newcnt; \
		374	}
		375
		376	#define array_slim(type,stem) \
		377	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		378	{ \
		379	stem ## max = array_roundsize (stem ## cnt >> 1); \
		380	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		381	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		382	}
		383
		384	#define array_free(stem, idx) \
		385	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		386
		387	/*****************************************************************************/
		388
		389	void noinline
		390	ev_feed_event (EV_P_ void *w, int revents)
		391	{
		392	W w_ = (W)w;
		393
		394	if (expect_false (w_->pending))
		395	{
		396	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		397	return;
		398	}
		399
		400	w_->pending = ++pendingcnt [ABSPRI (w_)];
		401	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		402	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		403	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		404	}
		405
		406	void inline_size
		407	queue_events (EV_P_ W *events, int eventcnt, int type)
		408	{
		409	int i;
		410
		411	for (i = 0; i < eventcnt; ++i)
		412	ev_feed_event (EV_A_ events [i], type);
		413	}
		414
		415	/*****************************************************************************/
		416
		417	void inline_size
		418	anfds_init (ANFD *base, int count)
		419	{
		420	while (count--)
		421	{
		422	base->head = 0;
		423	base->events = EV_NONE;
		424	base->reify = 0;
		425
		426	++base;
		427	}
		428	}
		429
		430	void inline_speed
		431	fd_event (EV_P_ int fd, int revents)
		432	{
		433	ANFD *anfd = anfds + fd;
		434	ev_io *w;
		435
		436	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		437	{
		438	int ev = w->events & revents;
		439
		440	if (ev)
		441	ev_feed_event (EV_A_ (W)w, ev);
		442	}
		443	}
		444
		445	void
		446	ev_feed_fd_event (EV_P_ int fd, int revents)
		447	{
		448	fd_event (EV_A_ fd, revents);
		449	}
		450
		451	void inline_size
		452	fd_reify (EV_P)
		453	{
		454	int i;
		455
		456	for (i = 0; i < fdchangecnt; ++i)
		457	{
		458	int fd = fdchanges [i];
		459	ANFD *anfd = anfds + fd;
		460	ev_io *w;
		461
		462	int events = 0;
		463
		464	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
		465	events |= w->events;
		466
		467	#if EV_SELECT_IS_WINSOCKET
		468	if (events)
		469	{
		470	unsigned long argp;
		471	anfd->handle = _get_osfhandle (fd);
		472	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		473	}
		474	#endif
		475
		476	anfd->reify = 0;
		477
		478	backend_modify (EV_A_ fd, anfd->events, events);
		479	anfd->events = events;
		480	}
		481
		482	fdchangecnt = 0;
		483	}
		484
		485	void inline_size
		486	fd_change (EV_P_ int fd)
		487	{
		488	if (expect_false (anfds [fd].reify))
		489	return;
		490
		491	anfds [fd].reify = 1;
		492
		493	++fdchangecnt;
		494	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
		495	fdchanges [fdchangecnt - 1] = fd;
		496	}
		497
		498	void inline_speed
		499	fd_kill (EV_P_ int fd)
		500	{
		501	ev_io *w;
		502
		503	while ((w = (ev_io *)anfds [fd].head))
		504	{
		505	ev_io_stop (EV_A_ w);
		506	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		507	}
		508	}
		509
		510	int inline_size
		511	fd_valid (int fd)
		512	{
		513	#ifdef _WIN32
		514	return _get_osfhandle (fd) != -1;
		515	#else
		516	return fcntl (fd, F_GETFD) != -1;
		517	#endif
		518	}
		519
		520	/* called on EBADF to verify fds */
		521	static void noinline
		522	fd_ebadf (EV_P)
		523	{
		524	int fd;
		525
		526	for (fd = 0; fd < anfdmax; ++fd)
		527	if (anfds [fd].events)
		528	if (!fd_valid (fd) == -1 && errno == EBADF)
		529	fd_kill (EV_A_ fd);
		530	}
		531
		532	/* called on ENOMEM in select/poll to kill some fds and retry */
		533	static void noinline
		534	fd_enomem (EV_P)
		535	{
		536	int fd;
		537
		538	for (fd = anfdmax; fd--; )
		539	if (anfds [fd].events)
		540	{
		541	fd_kill (EV_A_ fd);
		542	return;
76	}	543	}
		544	}
		545
		546	/* usually called after fork if backend needs to re-arm all fds from scratch */
		547	static void noinline
		548	fd_rearm_all (EV_P)
		549	{
		550	int fd;
		551
		552	/* this should be highly optimised to not do anything but set a flag */
		553	for (fd = 0; fd < anfdmax; ++fd)
		554	if (anfds [fd].events)
		555	{
		556	anfds [fd].events = 0;
		557	fd_change (EV_A_ fd);
		558	}
		559	}
		560
		561	/*****************************************************************************/
		562
		563	void inline_speed
		564	upheap (WT *heap, int k)
		565	{
		566	WT w = heap [k];
		567
		568	while (k && heap [k >> 1]->at > w->at)
		569	{
		570	heap [k] = heap [k >> 1];
		571	((W)heap [k])->active = k + 1;
		572	k >>= 1;
		573	}
		574
		575	heap [k] = w;
		576	((W)heap [k])->active = k + 1;
		577
		578	}
		579
		580	void inline_speed
		581	downheap (WT *heap, int N, int k)
		582	{
		583	WT w = heap [k];
		584
		585	while (k < (N >> 1))
		586	{
		587	int j = k << 1;
		588
		589	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
		590	++j;
		591
		592	if (w->at <= heap [j]->at)
		593	break;
		594
		595	heap [k] = heap [j];
		596	((W)heap [k])->active = k + 1;
		597	k = j;
		598	}
		599
		600	heap [k] = w;
		601	((W)heap [k])->active = k + 1;
		602	}
		603
		604	void inline_size
		605	adjustheap (WT *heap, int N, int k)
		606	{
		607	upheap (heap, k);
		608	downheap (heap, N, k);
		609	}
		610
		611	/*****************************************************************************/
77		612
78	typedef struct	613	typedef struct
79	{	614	{
80	struct ev_io *head;	615	WL head;
81	unsigned char wev, rev; /* want, received event set */	616	sig_atomic_t volatile gotsig;
82	} ANFD;	617	} ANSIG;
83		618
84	static ANFD *anfds;	619	static ANSIG *signals;
85	static int anfdmax;	620	static int signalmax;
86		621
87	static int *fdchanges;	622	static int sigpipe [2];
88	static int fdchangemax, fdchangecnt;	623	static sig_atomic_t volatile gotsig;
		624	static ev_io sigev;
		625
		626	void inline_size
		627	signals_init (ANSIG *base, int count)
		628	{
		629	while (count--)
		630	{
		631	base->head = 0;
		632	base->gotsig = 0;
		633
		634	++base;
		635	}
		636	}
89		637
90	static void	638	static void
91	anfds_init (ANFD *base, int count)	639	sighandler (int signum)
92	{	640	{
93	while (count--)	641	#if _WIN32
94	{	642	signal (signum, sighandler);
95	base->head = 0;	643	#endif
96	base->wev = base->rev = EV_NONE;	644
97	++base;	645	signals [signum - 1].gotsig = 1;
		646
		647	if (!gotsig)
98	}	648	{
		649	int old_errno = errno;
		650	gotsig = 1;
		651	write (sigpipe [1], &signum, 1);
		652	errno = old_errno;
		653	}
99	}	654	}
100		655
101	typedef struct	656	void noinline
		657	ev_feed_signal_event (EV_P_ int signum)
102	{	658	{
103	struct ev_watcher *w;	659	WL w;
104	int events;
105	} ANPENDING;
106		660
107	static ANPENDING *pendings;	661	#if EV_MULTIPLICITY
108	static int pendingmax, pendingcnt;	662	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		663	#endif
		664
		665	--signum;
		666
		667	if (signum < 0 || signum >= signalmax)
		668	return;
		669
		670	signals [signum].gotsig = 0;
		671
		672	for (w = signals [signum].head; w; w = w->next)
		673	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		674	}
109		675
110	static void	676	static void
111	event (struct ev_watcher *w, int events)	677	sigcb (EV_P_ ev_io *iow, int revents)
112	{	678	{
113	w->pending = ++pendingcnt;	679	int signum;
114	array_needsize (pendings, pendingmax, pendingcnt, );	680
115	pendings [pendingcnt - 1].w = w;	681	read (sigpipe [0], &revents, 1);
116	pendings [pendingcnt - 1].events = events;	682	gotsig = 0;
		683
		684	for (signum = signalmax; signum--; )
		685	if (signals [signum].gotsig)
		686	ev_feed_signal_event (EV_A_ signum + 1);
		687	}
		688
		689	void inline_size
		690	fd_intern (int fd)
		691	{
		692	#ifdef _WIN32
		693	int arg = 1;
		694	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		695	#else
		696	fcntl (fd, F_SETFD, FD_CLOEXEC);
		697	fcntl (fd, F_SETFL, O_NONBLOCK);
		698	#endif
		699	}
		700
		701	static void noinline
		702	siginit (EV_P)
		703	{
		704	fd_intern (sigpipe [0]);
		705	fd_intern (sigpipe [1]);
		706
		707	ev_io_set (&sigev, sigpipe [0], EV_READ);
		708	ev_io_start (EV_A_ &sigev);
		709	ev_unref (EV_A); /* child watcher should not keep loop alive */
		710	}
		711
		712	/*****************************************************************************/
		713
		714	static ev_child *childs [PID_HASHSIZE];
		715
		716	#ifndef _WIN32
		717
		718	static ev_signal childev;
		719
		720	#ifndef WCONTINUED
		721	# define WCONTINUED 0
		722	#endif
		723
		724	void inline_speed
		725	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		726	{
		727	ev_child *w;
		728
		729	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		730	if (w->pid == pid || !w->pid)
		731	{
		732	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		733	w->rpid = pid;
		734	w->rstatus = status;
		735	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		736	}
117	}	737	}
118		738
119	static void	739	static void
120	fd_event (int fd, int events)	740	childcb (EV_P_ ev_signal *sw, int revents)
121	{	741	{
122	ANFD *anfd = anfds + fd;	742	int pid, status;
123	struct ev_io *w;
124		743
125	for (w = anfd->head; w; w = w->next)	744	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
126	{
127	int ev = w->events & events;
128
129	if (ev)
130	event ((struct ev_watcher *)w, ev);
131	}	745	{
132	}	746	/* make sure we are called again until all childs have been reaped */
		747	/* we need to do it this way so that the callback gets called before we continue */
		748	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
133		749
134	static struct ev_timer **timers;	750	child_reap (EV_A_ sw, pid, pid, status);
135	static int timermax, timercnt;	751	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
		752	}
		753	}
		754
		755	#endif
		756
		757	/*****************************************************************************/
		758
		759	#if EV_USE_PORT
		760	# include "ev_port.c"
		761	#endif
		762	#if EV_USE_KQUEUE
		763	# include "ev_kqueue.c"
		764	#endif
		765	#if EV_USE_EPOLL
		766	# include "ev_epoll.c"
		767	#endif
		768	#if EV_USE_POLL
		769	# include "ev_poll.c"
		770	#endif
		771	#if EV_USE_SELECT
		772	# include "ev_select.c"
		773	#endif
		774
		775	int
		776	ev_version_major (void)
		777	{
		778	return EV_VERSION_MAJOR;
		779	}
		780
		781	int
		782	ev_version_minor (void)
		783	{
		784	return EV_VERSION_MINOR;
		785	}
		786
		787	/* return true if we are running with elevated privileges and should ignore env variables */
		788	int inline_size
		789	enable_secure (void)
		790	{
		791	#ifdef _WIN32
		792	return 0;
		793	#else
		794	return getuid () != geteuid ()
		795	|| getgid () != getegid ();
		796	#endif
		797	}
		798
		799	unsigned int
		800	ev_supported_backends (void)
		801	{
		802	unsigned int flags = 0;
		803
		804	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		805	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		806	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		807	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		808	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		809
		810	return flags;
		811	}
		812
		813	unsigned int
		814	ev_recommended_backends (void)
		815	{
		816	unsigned int flags = ev_supported_backends ();
		817
		818	#ifndef __NetBSD__
		819	/* kqueue is borked on everything but netbsd apparently */
		820	/* it usually doesn't work correctly on anything but sockets and pipes */
		821	flags &= ~EVBACKEND_KQUEUE;
		822	#endif
		823	#ifdef __APPLE__
		824	// flags &= ~EVBACKEND_KQUEUE; for documentation
		825	flags &= ~EVBACKEND_POLL;
		826	#endif
		827
		828	return flags;
		829	}
		830
		831	unsigned int
		832	ev_embeddable_backends (void)
		833	{
		834	return EVBACKEND_EPOLL
		835	| EVBACKEND_KQUEUE
		836	| EVBACKEND_PORT;
		837	}
		838
		839	unsigned int
		840	ev_backend (EV_P)
		841	{
		842	return backend;
		843	}
136		844
137	static void	845	static void
138	upheap (int k)	846	loop_init (EV_P_ unsigned int flags)
139	{	847	{
140	struct ev_timer *w = timers [k];	848	if (!backend)
141		849	{
142	while (k && timers [k >> 1]->at > w->at)	850	#if EV_USE_MONOTONIC
143	{	851	{
144	timers [k] = timers [k >> 1];	852	struct timespec ts;
145	timers [k]->active = k + 1;	853	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
146	k >>= 1;	854	have_monotonic = 1;
147	}	855	}
		856	#endif
148		857
149	timers [k] = w;	858	ev_rt_now = ev_time ();
150	timers [k]->active = k + 1;	859	mn_now = get_clock ();
		860	now_floor = mn_now;
		861	rtmn_diff = ev_rt_now - mn_now;
151		862
		863	if (!(flags & EVFLAG_NOENV)
		864	&& !enable_secure ()
		865	&& getenv ("LIBEV_FLAGS"))
		866	flags = atoi (getenv ("LIBEV_FLAGS"));
		867
		868	if (!(flags & 0x0000ffffUL))
		869	flags |= ev_recommended_backends ();
		870
		871	backend = 0;
		872	#if EV_USE_PORT
		873	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		874	#endif
		875	#if EV_USE_KQUEUE
		876	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		877	#endif
		878	#if EV_USE_EPOLL
		879	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		880	#endif
		881	#if EV_USE_POLL
		882	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
		883	#endif
		884	#if EV_USE_SELECT
		885	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
		886	#endif
		887
		888	ev_init (&sigev, sigcb);
		889	ev_set_priority (&sigev, EV_MAXPRI);
		890	}
152	}	891	}
153		892
154	static void	893	static void
155	downheap (int k)	894	loop_destroy (EV_P)
156	{	895	{
157	struct ev_timer *w = timers [k];	896	int i;
158		897
159	while (k < (timercnt >> 1))	898	#if EV_USE_PORT
160	{	899	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
161	int j = k << 1;	900	#endif
		901	#if EV_USE_KQUEUE
		902	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		903	#endif
		904	#if EV_USE_EPOLL
		905	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		906	#endif
		907	#if EV_USE_POLL
		908	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		909	#endif
		910	#if EV_USE_SELECT
		911	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		912	#endif
162		913
163	if (j + 1 < timercnt && timers [j]->at > timers [j + 1]->at)	914	for (i = NUMPRI; i--; )
164	++j;	915	array_free (pending, [i]);
165		916
166	if (w->at <= timers [j]->at)	917	/* have to use the microsoft-never-gets-it-right macro */
167	break;	918	array_free (fdchange, EMPTY0);
		919	array_free (timer, EMPTY0);
		920	#if EV_PERIODIC_ENABLE
		921	array_free (periodic, EMPTY0);
		922	#endif
		923	array_free (idle, EMPTY0);
		924	array_free (prepare, EMPTY0);
		925	array_free (check, EMPTY0);
168		926
169	timers [k] = timers [j];	927	backend = 0;
170	timers [k]->active = k + 1;
171	k = j;
172	}
173
174	timers [k] = w;
175	timers [k]->active = k + 1;
176	}	928	}
177
178	static struct ev_signal **signals;
179	static int signalmax, signalcnt;
180		929
181	static void	930	static void
182	signals_init (struct ev_signal **base, int count)	931	loop_fork (EV_P)
183	{	932	{
184	while (count--)	933	#if EV_USE_PORT
185	*base++ = 0;	934	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
186	}	935	#endif
187		936	#if EV_USE_KQUEUE
		937	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		938	#endif
188	#if HAVE_EPOLL	939	#if EV_USE_EPOLL
189	# include "ev_epoll.c"	940	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
190	#endif	941	#endif
191	#if HAVE_SELECT
192	# include "ev_select.c"
193	#endif
194		942
195	int ev_init (int flags)	943	if (ev_is_active (&sigev))
196	{
197	#if HAVE_MONOTONIC
198	{	944	{
199	struct timespec ts;	945	/* default loop */
200	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
201	have_monotonic = 1;
202	}
203	#endif
204		946
205	ev_now = ev_time ();	947	ev_ref (EV_A);
		948	ev_io_stop (EV_A_ &sigev);
		949	close (sigpipe [0]);
		950	close (sigpipe [1]);
206		951
207	#if HAVE_EPOLL	952	while (pipe (sigpipe))
208	if (epoll_init (flags))	953	syserr ("(libev) error creating pipe");
209	return ev_method;
210	#endif
211	#if HAVE_SELECT
212	if (select_init (flags))
213	return ev_method;
214	#endif
215		954
216	ev_method = EVMETHOD_NONE;	955	siginit (EV_A);
217	return ev_method;
218	}
219
220	void ev_prefork (void)
221	{
222	}
223
224	void ev_postfork_parent (void)
225	{
226	}
227
228	void ev_postfork_child (void)
229	{
230	#if HAVE_EPOLL
231	epoll_postfork_child ();
232	#endif
233	}
234
235	static void
236	call_pending ()
237	{
238	int i;
239
240	for (i = 0; i < pendingcnt; ++i)
241	{	956	}
242	ANPENDING *p = pendings + i;
243		957
244	if (p->w)	958	postfork = 0;
		959	}
		960
		961	#if EV_MULTIPLICITY
		962	struct ev_loop *
		963	ev_loop_new (unsigned int flags)
		964	{
		965	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		966
		967	memset (loop, 0, sizeof (struct ev_loop));
		968
		969	loop_init (EV_A_ flags);
		970
		971	if (ev_backend (EV_A))
		972	return loop;
		973
		974	return 0;
		975	}
		976
		977	void
		978	ev_loop_destroy (EV_P)
		979	{
		980	loop_destroy (EV_A);
		981	ev_free (loop);
		982	}
		983
		984	void
		985	ev_loop_fork (EV_P)
		986	{
		987	postfork = 1;
		988	}
		989
		990	#endif
		991
		992	#if EV_MULTIPLICITY
		993	struct ev_loop *
		994	ev_default_loop_init (unsigned int flags)
		995	#else
		996	int
		997	ev_default_loop (unsigned int flags)
		998	#endif
		999	{
		1000	if (sigpipe [0] == sigpipe [1])
		1001	if (pipe (sigpipe))
		1002	return 0;
		1003
		1004	if (!ev_default_loop_ptr)
		1005	{
		1006	#if EV_MULTIPLICITY
		1007	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1008	#else
		1009	ev_default_loop_ptr = 1;
		1010	#endif
		1011
		1012	loop_init (EV_A_ flags);
		1013
		1014	if (ev_backend (EV_A))
245	{	1015	{
246	p->w->pending = 0;	1016	siginit (EV_A);
247	p->w->cb (p->w, p->events);	1017
		1018	#ifndef _WIN32
		1019	ev_signal_init (&childev, childcb, SIGCHLD);
		1020	ev_set_priority (&childev, EV_MAXPRI);
		1021	ev_signal_start (EV_A_ &childev);
		1022	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1023	#endif
248	}	1024	}
		1025	else
		1026	ev_default_loop_ptr = 0;
		1027	}
		1028
		1029	return ev_default_loop_ptr;
		1030	}
		1031
		1032	void
		1033	ev_default_destroy (void)
		1034	{
		1035	#if EV_MULTIPLICITY
		1036	struct ev_loop *loop = ev_default_loop_ptr;
		1037	#endif
		1038
		1039	#ifndef _WIN32
		1040	ev_ref (EV_A); /* child watcher */
		1041	ev_signal_stop (EV_A_ &childev);
		1042	#endif
		1043
		1044	ev_ref (EV_A); /* signal watcher */
		1045	ev_io_stop (EV_A_ &sigev);
		1046
		1047	close (sigpipe [0]); sigpipe [0] = 0;
		1048	close (sigpipe [1]); sigpipe [1] = 0;
		1049
		1050	loop_destroy (EV_A);
		1051	}
		1052
		1053	void
		1054	ev_default_fork (void)
		1055	{
		1056	#if EV_MULTIPLICITY
		1057	struct ev_loop *loop = ev_default_loop_ptr;
		1058	#endif
		1059
		1060	if (backend)
		1061	postfork = 1;
		1062	}
		1063
		1064	/*****************************************************************************/
		1065
		1066	int inline_size
		1067	any_pending (EV_P)
		1068	{
		1069	int pri;
		1070
		1071	for (pri = NUMPRI; pri--; )
		1072	if (pendingcnt [pri])
		1073	return 1;
		1074
		1075	return 0;
		1076	}
		1077
		1078	void inline_speed
		1079	call_pending (EV_P)
		1080	{
		1081	int pri;
		1082
		1083	for (pri = NUMPRI; pri--; )
		1084	while (pendingcnt [pri])
		1085	{
		1086	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
		1087
		1088	if (expect_true (p->w))
		1089	{
		1090	assert (("non-pending watcher on pending list", p->w->pending));
		1091
		1092	p->w->pending = 0;
		1093	EV_CB_INVOKE (p->w, p->events);
		1094	}
249	}	1095	}
250
251	pendingcnt = 0;
252	}	1096	}
253		1097
254	static void	1098	void inline_size
255	timer_reify (void)	1099	timers_reify (EV_P)
256	{	1100	{
257	while (timercnt && timers [0]->at <= ev_now)	1101	while (timercnt && ((WT)timers [0])->at <= mn_now)
258	{	1102	{
259	struct ev_timer *w = timers [0];	1103	ev_timer *w = timers [0];
260		1104
261	fprintf (stderr, "0 %f, %d c%d\n", w->at, w->active, timercnt);//D	1105	assert (("inactive timer on timer heap detected", ev_is_active (w)));
		1106
262	/* first reschedule timer */	1107	/* first reschedule or stop timer */
263	if (w->repeat)	1108	if (w->repeat)
264	{	1109	{
265	fprintf (stderr, "a %f now %f repeat %f, %f\n", w->at, ev_now, w->repeat, w->repeat *1e30);//D	1110	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
266	if (w->is_abs)	1111
267	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;
268	else
269	w->at = ev_now + w->repeat;	1112	((WT)w)->at += w->repeat;
		1113	if (((WT)w)->at < mn_now)
		1114	((WT)w)->at = mn_now;
270		1115
271	fprintf (stderr, "b %f\n", w->at);//D	1116	downheap ((WT *)timers, timercnt, 0);
272
273	downheap (0);
274	}	1117	}
275	else	1118	else
		1119	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		1120
		1121	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1122	}
		1123	}
		1124
		1125	#if EV_PERIODIC_ENABLE
		1126	void inline_size
		1127	periodics_reify (EV_P)
		1128	{
		1129	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
		1130	{
		1131	ev_periodic *w = periodics [0];
		1132
		1133	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1134
		1135	/* first reschedule or stop timer */
		1136	if (w->reschedule_cb)
276	{	1137	{
277	fprintf (stderr, "c %f, %d c%d\n", w->at, w->active, timercnt);//D	1138	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
278	evtimer_stop (w); /* nonrepeating: stop timer */	1139	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1140	downheap ((WT *)periodics, periodiccnt, 0);
279	}	1141	}
		1142	else if (w->interval)
		1143	{
		1144	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
		1145	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
		1146	downheap ((WT *)periodics, periodiccnt, 0);
		1147	}
		1148	else
		1149	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
280		1150
281	event ((struct ev_watcher *)w, EV_TIMEOUT);	1151	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
282	}
283	}
284
285	int ev_loop_done;
286
287	int ev_loop (int flags)
288	{
289	double block;
290	ev_loop_done = flags & EVLOOP_ONESHOT;
291
292	do
293	{	1152	}
		1153	}
		1154
		1155	static void noinline
		1156	periodics_reschedule (EV_P)
		1157	{
		1158	int i;
		1159
		1160	/* adjust periodics after time jump */
		1161	for (i = 0; i < periodiccnt; ++i)
		1162	{
		1163	ev_periodic *w = periodics [i];
		1164
		1165	if (w->reschedule_cb)
		1166	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1167	else if (w->interval)
		1168	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1169	}
		1170
		1171	/* now rebuild the heap */
		1172	for (i = periodiccnt >> 1; i--; )
		1173	downheap ((WT *)periodics, periodiccnt, i);
		1174	}
		1175	#endif
		1176
		1177	int inline_size
		1178	time_update_monotonic (EV_P)
		1179	{
		1180	mn_now = get_clock ();
		1181
		1182	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1183	{
		1184	ev_rt_now = rtmn_diff + mn_now;
		1185	return 0;
		1186	}
		1187	else
		1188	{
		1189	now_floor = mn_now;
		1190	ev_rt_now = ev_time ();
		1191	return 1;
		1192	}
		1193	}
		1194
		1195	void inline_size
		1196	time_update (EV_P)
		1197	{
		1198	int i;
		1199
		1200	#if EV_USE_MONOTONIC
		1201	if (expect_true (have_monotonic))
		1202	{
		1203	if (time_update_monotonic (EV_A))
		1204	{
		1205	ev_tstamp odiff = rtmn_diff;
		1206
		1207	/* loop a few times, before making important decisions.
		1208	* on the choice of "4": one iteration isn't enough,
		1209	* in case we get preempted during the calls to
		1210	* ev_time and get_clock. a second call is almost guarenteed
		1211	* to succeed in that case, though. and looping a few more times
		1212	* doesn't hurt either as we only do this on time-jumps or
		1213	* in the unlikely event of getting preempted here.
		1214	*/
		1215	for (i = 4; --i; )
		1216	{
		1217	rtmn_diff = ev_rt_now - mn_now;
		1218
		1219	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1220	return; /* all is well */
		1221
		1222	ev_rt_now = ev_time ();
		1223	mn_now = get_clock ();
		1224	now_floor = mn_now;
		1225	}
		1226
		1227	# if EV_PERIODIC_ENABLE
		1228	periodics_reschedule (EV_A);
		1229	# endif
		1230	/* no timer adjustment, as the monotonic clock doesn't jump */
		1231	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
		1232	}
		1233	}
		1234	else
		1235	#endif
		1236	{
		1237	ev_rt_now = ev_time ();
		1238
		1239	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
		1240	{
		1241	#if EV_PERIODIC_ENABLE
		1242	periodics_reschedule (EV_A);
		1243	#endif
		1244
		1245	/* adjust timers. this is easy, as the offset is the same for all */
		1246	for (i = 0; i < timercnt; ++i)
		1247	((WT)timers [i])->at += ev_rt_now - mn_now;
		1248	}
		1249
		1250	mn_now = ev_rt_now;
		1251	}
		1252	}
		1253
		1254	void
		1255	ev_ref (EV_P)
		1256	{
		1257	++activecnt;
		1258	}
		1259
		1260	void
		1261	ev_unref (EV_P)
		1262	{
		1263	--activecnt;
		1264	}
		1265
		1266	static int loop_done;
		1267
		1268	void
		1269	ev_loop (EV_P_ int flags)
		1270	{
		1271	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1272	? EVUNLOOP_ONE
		1273	: EVUNLOOP_CANCEL;
		1274
		1275	while (activecnt)
		1276	{
		1277	/* queue check watchers (and execute them) */
		1278	if (expect_false (preparecnt))
		1279	{
		1280	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
		1281	call_pending (EV_A);
		1282	}
		1283
		1284	/* we might have forked, so reify kernel state if necessary */
		1285	if (expect_false (postfork))
		1286	loop_fork (EV_A);
		1287
294	/* update fd-related kernel structures */	1288	/* update fd-related kernel structures */
295	method_reify (); fdchangecnt = 0;	1289	fd_reify (EV_A);
296		1290
297	/* calculate blocking time */	1291	/* calculate blocking time */
298	ev_now = ev_time ();	1292	{
		1293	double block;
299		1294
300	if (flags & EVLOOP_NONBLOCK)	1295	if (flags & EVLOOP_NONBLOCK || idlecnt)
301	block = 0.;	1296	block = 0.; /* do not block at all */
302	else if (!timercnt)	1297	else
		1298	{
		1299	/* update time to cancel out callback processing overhead */
		1300	#if EV_USE_MONOTONIC
		1301	if (expect_true (have_monotonic))
		1302	time_update_monotonic (EV_A);
		1303	else
		1304	#endif
		1305	{
		1306	ev_rt_now = ev_time ();
		1307	mn_now = ev_rt_now;
		1308	}
		1309
303	block = MAX_BLOCKTIME;	1310	block = MAX_BLOCKTIME;
304	else	1311
		1312	if (timercnt)
305	{	1313	{
306	block = timers [0]->at - ev_now + method_fudge;	1314	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
		1315	if (block > to) block = to;
		1316	}
		1317
		1318	#if EV_PERIODIC_ENABLE
		1319	if (periodiccnt)
		1320	{
		1321	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
		1322	if (block > to) block = to;
		1323	}
		1324	#endif
		1325
307	if (block < 0.) block = 0.;	1326	if (expect_false (block < 0.)) block = 0.;
308	else if (block > MAX_BLOCKTIME) block = MAX_BLOCKTIME;
309	}	1327	}
310		1328
311	fprintf (stderr, "block %f\n", block);//D	1329	backend_poll (EV_A_ block);
312	method_poll (block);	1330	}
313		1331
		1332	/* update ev_rt_now, do magic */
		1333	time_update (EV_A);
		1334
314	/* put pending timers into pendign queue and reschedule them */	1335	/* queue pending timers and reschedule them */
315	timer_reify ();	1336	timers_reify (EV_A); /* relative timers called last */
		1337	#if EV_PERIODIC_ENABLE
		1338	periodics_reify (EV_A); /* absolute timers called first */
		1339	#endif
316		1340
317	ev_now = ev_time ();	1341	/* queue idle watchers unless other events are pending */
		1342	if (idlecnt && !any_pending (EV_A))
		1343	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
		1344
		1345	/* queue check watchers, to be executed first */
		1346	if (expect_false (checkcnt))
		1347	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		1348
318	call_pending ();	1349	call_pending (EV_A);
319	}
320	while (!ev_loop_done);
321	}
322		1350
323	static void	1351	if (expect_false (loop_done))
324	wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem)	1352	break;
		1353	}
		1354
		1355	if (loop_done == EVUNLOOP_ONE)
		1356	loop_done = EVUNLOOP_CANCEL;
		1357	}
		1358
		1359	void
		1360	ev_unloop (EV_P_ int how)
		1361	{
		1362	loop_done = how;
		1363	}
		1364
		1365	/*****************************************************************************/
		1366
		1367	void inline_size
		1368	wlist_add (WL *head, WL elem)
325	{	1369	{
326	elem->next = *head;	1370	elem->next = *head;
327	*head = elem;	1371	*head = elem;
328	}	1372	}
329		1373
330	static void	1374	void inline_size
331	wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem)	1375	wlist_del (WL *head, WL elem)
332	{	1376	{
333	while (*head)	1377	while (*head)
334	{	1378	{
335	if (*head == elem)	1379	if (*head == elem)
336	{	1380	{
…		…
340		1384
341	head = &(*head)->next;	1385	head = &(*head)->next;
342	}	1386	}
343	}	1387	}
344		1388
		1389	void inline_speed
		1390	ev_clear_pending (EV_P_ W w)
		1391	{
		1392	if (w->pending)
		1393	{
		1394	pendings [ABSPRI (w)][w->pending - 1].w = 0;
		1395	w->pending = 0;
		1396	}
		1397	}
		1398
		1399	void inline_speed
		1400	ev_start (EV_P_ W w, int active)
		1401	{
		1402	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1403	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1404
		1405	w->active = active;
		1406	ev_ref (EV_A);
		1407	}
		1408
		1409	void inline_size
		1410	ev_stop (EV_P_ W w)
		1411	{
		1412	ev_unref (EV_A);
		1413	w->active = 0;
		1414	}
		1415
		1416	/*****************************************************************************/
		1417
		1418	void
		1419	ev_io_start (EV_P_ ev_io *w)
		1420	{
		1421	int fd = w->fd;
		1422
		1423	if (expect_false (ev_is_active (w)))
		1424	return;
		1425
		1426	assert (("ev_io_start called with negative fd", fd >= 0));
		1427
		1428	ev_start (EV_A_ (W)w, 1);
		1429	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
		1430	wlist_add ((WL *)&anfds[fd].head, (WL)w);
		1431
		1432	fd_change (EV_A_ fd);
		1433	}
		1434
		1435	void
		1436	ev_io_stop (EV_P_ ev_io *w)
		1437	{
		1438	ev_clear_pending (EV_A_ (W)w);
		1439	if (expect_false (!ev_is_active (w)))
		1440	return;
		1441
		1442	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1443
		1444	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
		1445	ev_stop (EV_A_ (W)w);
		1446
		1447	fd_change (EV_A_ w->fd);
		1448	}
		1449
		1450	void
		1451	ev_timer_start (EV_P_ ev_timer *w)
		1452	{
		1453	if (expect_false (ev_is_active (w)))
		1454	return;
		1455
		1456	((WT)w)->at += mn_now;
		1457
		1458	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		1459
		1460	ev_start (EV_A_ (W)w, ++timercnt);
		1461	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
		1462	timers [timercnt - 1] = w;
		1463	upheap ((WT *)timers, timercnt - 1);
		1464
		1465	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1466	}
		1467
		1468	void
		1469	ev_timer_stop (EV_P_ ev_timer *w)
		1470	{
		1471	ev_clear_pending (EV_A_ (W)w);
		1472	if (expect_false (!ev_is_active (w)))
		1473	return;
		1474
		1475	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1476
		1477	if (expect_true (((W)w)->active < timercnt--))
		1478	{
		1479	timers [((W)w)->active - 1] = timers [timercnt];
		1480	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1481	}
		1482
		1483	((WT)w)->at -= mn_now;
		1484
		1485	ev_stop (EV_A_ (W)w);
		1486	}
		1487
		1488	void
		1489	ev_timer_again (EV_P_ ev_timer *w)
		1490	{
		1491	if (ev_is_active (w))
		1492	{
		1493	if (w->repeat)
		1494	{
		1495	((WT)w)->at = mn_now + w->repeat;
		1496	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
		1497	}
		1498	else
		1499	ev_timer_stop (EV_A_ w);
		1500	}
		1501	else if (w->repeat)
		1502	{
		1503	w->at = w->repeat;
		1504	ev_timer_start (EV_A_ w);
		1505	}
		1506	}
		1507
		1508	#if EV_PERIODIC_ENABLE
		1509	void
		1510	ev_periodic_start (EV_P_ ev_periodic *w)
		1511	{
		1512	if (expect_false (ev_is_active (w)))
		1513	return;
		1514
		1515	if (w->reschedule_cb)
		1516	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1517	else if (w->interval)
		1518	{
		1519	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		1520	/* this formula differs from the one in periodic_reify because we do not always round up */
		1521	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1522	}
		1523
		1524	ev_start (EV_A_ (W)w, ++periodiccnt);
		1525	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
		1526	periodics [periodiccnt - 1] = w;
		1527	upheap ((WT *)periodics, periodiccnt - 1);
		1528
		1529	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1530	}
		1531
		1532	void
		1533	ev_periodic_stop (EV_P_ ev_periodic *w)
		1534	{
		1535	ev_clear_pending (EV_A_ (W)w);
		1536	if (expect_false (!ev_is_active (w)))
		1537	return;
		1538
		1539	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1540
		1541	if (expect_true (((W)w)->active < periodiccnt--))
		1542	{
		1543	periodics [((W)w)->active - 1] = periodics [periodiccnt];
		1544	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
		1545	}
		1546
		1547	ev_stop (EV_A_ (W)w);
		1548	}
		1549
		1550	void
		1551	ev_periodic_again (EV_P_ ev_periodic *w)
		1552	{
		1553	/* TODO: use adjustheap and recalculation */
		1554	ev_periodic_stop (EV_A_ w);
		1555	ev_periodic_start (EV_A_ w);
		1556	}
		1557	#endif
		1558
		1559	void
		1560	ev_idle_start (EV_P_ ev_idle *w)
		1561	{
		1562	if (expect_false (ev_is_active (w)))
		1563	return;
		1564
		1565	ev_start (EV_A_ (W)w, ++idlecnt);
		1566	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1567	idles [idlecnt - 1] = w;
		1568	}
		1569
		1570	void
		1571	ev_idle_stop (EV_P_ ev_idle *w)
		1572	{
		1573	ev_clear_pending (EV_A_ (W)w);
		1574	if (expect_false (!ev_is_active (w)))
		1575	return;
		1576
		1577	{
		1578	int active = ((W)w)->active;
		1579	idles [active - 1] = idles [--idlecnt];
		1580	((W)idles [active - 1])->active = active;
		1581	}
		1582
		1583	ev_stop (EV_A_ (W)w);
		1584	}
		1585
		1586	void
		1587	ev_prepare_start (EV_P_ ev_prepare *w)
		1588	{
		1589	if (expect_false (ev_is_active (w)))
		1590	return;
		1591
		1592	ev_start (EV_A_ (W)w, ++preparecnt);
		1593	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1594	prepares [preparecnt - 1] = w;
		1595	}
		1596
		1597	void
		1598	ev_prepare_stop (EV_P_ ev_prepare *w)
		1599	{
		1600	ev_clear_pending (EV_A_ (W)w);
		1601	if (expect_false (!ev_is_active (w)))
		1602	return;
		1603
		1604	{
		1605	int active = ((W)w)->active;
		1606	prepares [active - 1] = prepares [--preparecnt];
		1607	((W)prepares [active - 1])->active = active;
		1608	}
		1609
		1610	ev_stop (EV_A_ (W)w);
		1611	}
		1612
		1613	void
		1614	ev_check_start (EV_P_ ev_check *w)
		1615	{
		1616	if (expect_false (ev_is_active (w)))
		1617	return;
		1618
		1619	ev_start (EV_A_ (W)w, ++checkcnt);
		1620	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1621	checks [checkcnt - 1] = w;
		1622	}
		1623
		1624	void
		1625	ev_check_stop (EV_P_ ev_check *w)
		1626	{
		1627	ev_clear_pending (EV_A_ (W)w);
		1628	if (expect_false (!ev_is_active (w)))
		1629	return;
		1630
		1631	{
		1632	int active = ((W)w)->active;
		1633	checks [active - 1] = checks [--checkcnt];
		1634	((W)checks [active - 1])->active = active;
		1635	}
		1636
		1637	ev_stop (EV_A_ (W)w);
		1638	}
		1639
		1640	#ifndef SA_RESTART
		1641	# define SA_RESTART 0
		1642	#endif
		1643
		1644	void
		1645	ev_signal_start (EV_P_ ev_signal *w)
		1646	{
		1647	#if EV_MULTIPLICITY
		1648	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1649	#endif
		1650	if (expect_false (ev_is_active (w)))
		1651	return;
		1652
		1653	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1654
		1655	ev_start (EV_A_ (W)w, 1);
		1656	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1657	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
		1658
		1659	if (!((WL)w)->next)
		1660	{
		1661	#if _WIN32
		1662	signal (w->signum, sighandler);
		1663	#else
		1664	struct sigaction sa;
		1665	sa.sa_handler = sighandler;
		1666	sigfillset (&sa.sa_mask);
		1667	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
		1668	sigaction (w->signum, &sa, 0);
		1669	#endif
		1670	}
		1671	}
		1672
		1673	void
		1674	ev_signal_stop (EV_P_ ev_signal *w)
		1675	{
		1676	ev_clear_pending (EV_A_ (W)w);
		1677	if (expect_false (!ev_is_active (w)))
		1678	return;
		1679
		1680	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
		1681	ev_stop (EV_A_ (W)w);
		1682
		1683	if (!signals [w->signum - 1].head)
		1684	signal (w->signum, SIG_DFL);
		1685	}
		1686
		1687	void
		1688	ev_child_start (EV_P_ ev_child *w)
		1689	{
		1690	#if EV_MULTIPLICITY
		1691	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1692	#endif
		1693	if (expect_false (ev_is_active (w)))
		1694	return;
		1695
		1696	ev_start (EV_A_ (W)w, 1);
		1697	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1698	}
		1699
		1700	void
		1701	ev_child_stop (EV_P_ ev_child *w)
		1702	{
		1703	ev_clear_pending (EV_A_ (W)w);
		1704	if (expect_false (!ev_is_active (w)))
		1705	return;
		1706
		1707	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1708	ev_stop (EV_A_ (W)w);
		1709	}
		1710
		1711	#if EV_EMBED_ENABLE
		1712	void noinline
		1713	ev_embed_sweep (EV_P_ ev_embed *w)
		1714	{
		1715	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1716	}
		1717
345	static void	1718	static void
346	ev_start (struct ev_watcher *w, int active)	1719	embed_cb (EV_P_ ev_io *io, int revents)
347	{	1720	{
348	w->pending = 0;	1721	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
349	w->active = active;	1722
		1723	if (ev_cb (w))
		1724	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1725	else
		1726	ev_embed_sweep (loop, w);
		1727	}
		1728
		1729	void
		1730	ev_embed_start (EV_P_ ev_embed *w)
		1731	{
		1732	if (expect_false (ev_is_active (w)))
		1733	return;
		1734
		1735	{
		1736	struct ev_loop *loop = w->loop;
		1737	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1738	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1739	}
		1740
		1741	ev_set_priority (&w->io, ev_priority (w));
		1742	ev_io_start (EV_A_ &w->io);
		1743
		1744	ev_start (EV_A_ (W)w, 1);
		1745	}
		1746
		1747	void
		1748	ev_embed_stop (EV_P_ ev_embed *w)
		1749	{
		1750	ev_clear_pending (EV_A_ (W)w);
		1751	if (expect_false (!ev_is_active (w)))
		1752	return;
		1753
		1754	ev_io_stop (EV_A_ &w->io);
		1755
		1756	ev_stop (EV_A_ (W)w);
		1757	}
		1758	#endif
		1759
		1760	#if EV_STAT_ENABLE
		1761
		1762	# ifdef _WIN32
		1763	# define lstat(a,b) stat(a,b)
		1764	# endif
		1765
		1766	void
		1767	ev_stat_stat (EV_P_ ev_stat *w)
		1768	{
		1769	if (lstat (w->path, &w->attr) < 0)
		1770	w->attr.st_nlink = 0;
		1771	else if (!w->attr.st_nlink)
		1772	w->attr.st_nlink = 1;
350	}	1773	}
351		1774
352	static void	1775	static void
353	ev_stop (struct ev_watcher *w)	1776	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
354	{	1777	{
355	if (w->pending)	1778	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
356	pendings [w->pending - 1].w = 0;
357		1779
358	w->active = 0;	1780	/* we copy this here each the time so that */
359	/* nop */	1781	/* prev has the old value when the callback gets invoked */
360	}	1782	w->prev = w->attr;
		1783	ev_stat_stat (EV_A_ w);
361		1784
		1785	if (memcmp (&w->prev, &w->attr, sizeof (ev_statdata)))
		1786	ev_feed_event (EV_A_ w, EV_STAT);
		1787	}
		1788
362	void	1789	void
363	evio_start (struct ev_io *w)	1790	ev_stat_start (EV_P_ ev_stat *w)
364	{	1791	{
365	if (ev_is_active (w))	1792	if (expect_false (ev_is_active (w)))
366	return;	1793	return;
367		1794
368	int fd = w->fd;	1795	/* since we use memcmp, we need to clear any padding data etc. */
		1796	memset (&w->prev, 0, sizeof (ev_statdata));
		1797	memset (&w->attr, 0, sizeof (ev_statdata));
369		1798
370	ev_start ((struct ev_watcher *)w, 1);	1799	ev_stat_stat (EV_A_ w);
371	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
372	wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w);
373		1800
374	++fdchangecnt;	1801	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
375	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	1802	ev_set_priority (&w->timer, ev_priority (w));
376	fdchanges [fdchangecnt - 1] = fd;	1803	ev_timer_start (EV_A_ &w->timer);
377	}
378		1804
		1805	ev_start (EV_A_ (W)w, 1);
		1806	}
		1807
379	void	1808	void
380	evio_stop (struct ev_io *w)	1809	ev_stat_stop (EV_P_ ev_stat *w)
381	{	1810	{
		1811	ev_clear_pending (EV_A_ (W)w);
382	if (!ev_is_active (w))	1812	if (expect_false (!ev_is_active (w)))
383	return;	1813	return;
384		1814
385	wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w);	1815	ev_timer_stop (EV_A_ &w->timer);
386	ev_stop ((struct ev_watcher *)w);
387		1816
388	++fdchangecnt;	1817	ev_stop (EV_A_ (W)w);
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
390	fdchanges [fdchangecnt - 1] = w->fd;
391	}	1818	}
392		1819	#endif
393	void
394	evtimer_start (struct ev_timer *w)
395	{
396	if (ev_is_active (w))
397	return;
398
399	fprintf (stderr, "t1 %f a %d\n", w->at, w->is_abs);//D
400	if (w->is_abs)
401	{
402	/* this formula differs from the one in timer_reify becuse we do not round up */
403	if (w->repeat)
404	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;
405	}
406	else
407	w->at += ev_now;
408	fprintf (stderr, "t2 %f a %d\n", w->at, w->is_abs);//D
409
410	ev_start ((struct ev_watcher *)w, ++timercnt);
411	array_needsize (timers, timermax, timercnt, );
412	timers [timercnt - 1] = w;
413	upheap (timercnt - 1);
414	}
415
416	void
417	evtimer_stop (struct ev_timer *w)
418	{
419	fprintf (stderr, "-topping %d, %d\n", w->active, timercnt);//D
420	if (!ev_is_active (w))
421	return;
422
423	fprintf (stderr, "stopping %d, %d\n", w->active, timercnt);//D
424	if (w->active < timercnt)
425	{
426	timers [w->active - 1] = timers [--timercnt];
427	downheap (w->active - 1);
428	}
429
430	ev_stop ((struct ev_watcher *)w);
431	}
432
433	void
434	evsignal_start (struct ev_signal *w)
435	{
436	if (ev_is_active (w))
437	return;
438
439	ev_start ((struct ev_watcher *)w, 1);
440	array_needsize (signals, signalmax, w->signum, signals_init);
441	wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w);
442	}
443
444	void
445	evsignal_stop (struct ev_signal *w)
446	{
447	if (!ev_is_active (w))
448	return;
449
450	wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w);
451	ev_stop ((struct ev_watcher *)w);
452	}
453		1820
454	/*****************************************************************************/	1821	/*****************************************************************************/
455	#if 1	1822
		1823	struct ev_once
		1824	{
		1825	ev_io io;
		1826	ev_timer to;
		1827	void (*cb)(int revents, void *arg);
		1828	void *arg;
		1829	};
456		1830
457	static void	1831	static void
458	sin_cb (struct ev_io *w, int revents)	1832	once_cb (EV_P_ struct ev_once *once, int revents)
459	{	1833	{
460	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1834	void (*cb)(int revents, void *arg) = once->cb;
		1835	void *arg = once->arg;
		1836
		1837	ev_io_stop (EV_A_ &once->io);
		1838	ev_timer_stop (EV_A_ &once->to);
		1839	ev_free (once);
		1840
		1841	cb (revents, arg);
461	}	1842	}
462		1843
463	static void	1844	static void
		1845	once_cb_io (EV_P_ ev_io *w, int revents)
		1846	{
		1847	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
		1848	}
		1849
		1850	static void
464	ocb (struct ev_timer *w, int revents)	1851	once_cb_to (EV_P_ ev_timer *w, int revents)
465	{	1852	{
466	fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1853	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
467	}	1854	}
468		1855
469	int main (void)	1856	void
		1857	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
470	{	1858	{
471	struct ev_io sin;	1859	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
472		1860
473	ev_init (0);	1861	if (expect_false (!once))
474
475	evw_init (&sin, sin_cb, 55);
476	evio_set (&sin, 0, EV_READ);
477	evio_start (&sin);
478
479	struct ev_timer t[1000];
480
481	int i;
482	for (i = 0; i < 1000; ++i)
483	{
484	struct ev_timer *w = t + i;
485	evw_init (w, ocb, i);
486	evtimer_set_rel (w, drand48 (), 0);
487	evtimer_start (w);
488	if (drand48 () < 0.5)
489	evtimer_stop (w);
490	}	1862	{
491		1863	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
492	ev_loop (0);
493
494	return 0;	1864	return;
495	}	1865	}
496		1866
497	#endif	1867	once->cb = cb;
		1868	once->arg = arg;
498		1869
		1870	ev_init (&once->io, once_cb_io);
		1871	if (fd >= 0)
		1872	{
		1873	ev_io_set (&once->io, fd, events);
		1874	ev_io_start (EV_A_ &once->io);
		1875	}
499		1876
		1877	ev_init (&once->to, once_cb_to);
		1878	if (timeout >= 0.)
		1879	{
		1880	ev_timer_set (&once->to, timeout, 0.);
		1881	ev_timer_start (EV_A_ &once->to);
		1882	}
		1883	}
500		1884
		1885	#ifdef __cplusplus
		1886	}
		1887	#endif
501		1888

Diff Legend

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