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Comparing libev/ev.c (file contents):
Revision 1.26 by root, Wed Oct 31 21:50:15 2007 UTC vs.
Revision 1.85 by root, Sat Nov 10 03:13:50 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
…		…
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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	*/
		31	#ifndef EV_STANDALONE
		32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
		55	#endif
29		56
30	#include <math.h>	57	#include <math.h>
31	#include <stdlib.h>	58	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	59	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	60	#include <stddef.h>
36		61
37	#include <stdio.h>	62	#include <stdio.h>
38		63
39	#include <assert.h>	64	#include <assert.h>
40	#include <errno.h>	65	#include <errno.h>
41	#include <sys/types.h>	66	#include <sys/types.h>
42	#include <sys/wait.h>
43	#include <sys/time.h>
44	#include <time.h>	67	#include <time.h>
45		68
		69	#include <signal.h>
		70
		71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
		74	# include <sys/wait.h>
		75	#endif
		76	/**/
		77
46	#ifndef HAVE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
47	# ifdef CLOCK_MONOTONIC
48	# define HAVE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
		80	#endif
		81
		82	#ifndef EV_USE_SELECT
		83	# define EV_USE_SELECT 1
		84	#endif
		85
		86	#ifndef EV_USE_POLL
		87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		88	#endif
		89
		90	#ifndef EV_USE_EPOLL
		91	# define EV_USE_EPOLL 0
		92	#endif
		93
		94	#ifndef EV_USE_KQUEUE
		95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
49	# endif	105	# endif
50	#endif	106	#endif
51		107
52	#ifndef HAVE_SELECT
53	# define HAVE_SELECT 1
54	#endif
55
56	#ifndef HAVE_EPOLL
57	# define HAVE_EPOLL 0
58	#endif
59
60	#ifndef HAVE_REALTIME	108	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	109	# define EV_USE_REALTIME 1
62	#endif	110	#endif
		111
		112	/**/
		113
		114	#ifndef CLOCK_MONOTONIC
		115	# undef EV_USE_MONOTONIC
		116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef CLOCK_REALTIME
		120	# undef EV_USE_REALTIME
		121	# define EV_USE_REALTIME 0
		122	#endif
		123
		124	/**/
63		125
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	127	#define MAX_BLOCKTIME 59.731 /* 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 */	128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
67		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
68	#include "ev.h"	134	# include "ev.h"
		135	#endif
		136
		137	#if __GNUC__ >= 3
		138	# define expect(expr,value) __builtin_expect ((expr),(value))
		139	# define inline inline
		140	#else
		141	# define expect(expr,value) (expr)
		142	# define inline static
		143	#endif
		144
		145	#define expect_false(expr) expect ((expr) != 0, 0)
		146	#define expect_true(expr) expect ((expr) != 0, 1)
		147
		148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
69		150
70	typedef struct ev_watcher *W;	151	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	152	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	153	typedef struct ev_watcher_time *WT;
73		154
74	static ev_tstamp now, diff; /* monotonic clock */	155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
75	ev_tstamp ev_now;
76	int ev_method;
77		156
78	static int have_monotonic; /* runtime */	157	#include "ev_win32.c"
79
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		158
84	/*****************************************************************************/	159	/*****************************************************************************/
85		160
86	ev_tstamp	161	static void (*syserr_cb)(const char *msg);
		162
		163	void ev_set_syserr_cb (void (*cb)(const char *msg))
		164	{
		165	syserr_cb = cb;
		166	}
		167
		168	static void
		169	syserr (const char *msg)
		170	{
		171	if (!msg)
		172	msg = "(libev) system error";
		173
		174	if (syserr_cb)
		175	syserr_cb (msg);
		176	else
		177	{
		178	perror (msg);
		179	abort ();
		180	}
		181	}
		182
		183	static void *(*alloc)(void *ptr, long size);
		184
		185	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		186	{
		187	alloc = cb;
		188	}
		189
		190	static void *
		191	ev_realloc (void *ptr, long size)
		192	{
		193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		194
		195	if (!ptr && size)
		196	{
		197	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		198	abort ();
		199	}
		200
		201	return ptr;
		202	}
		203
		204	#define ev_malloc(size) ev_realloc (0, (size))
		205	#define ev_free(ptr) ev_realloc ((ptr), 0)
		206
		207	/*****************************************************************************/
		208
		209	typedef struct
		210	{
		211	WL head;
		212	unsigned char events;
		213	unsigned char reify;
		214	} ANFD;
		215
		216	typedef struct
		217	{
		218	W w;
		219	int events;
		220	} ANPENDING;
		221
		222	#if EV_MULTIPLICITY
		223
		224	struct ev_loop
		225	{
		226	#define VAR(name,decl) decl;
		227	#include "ev_vars.h"
		228	#undef VAR
		229	};
		230	#include "ev_wrap.h"
		231
		232	struct ev_loop default_loop_struct;
		233	static struct ev_loop *default_loop;
		234
		235	#else
		236
		237	#define VAR(name,decl) static decl;
		238	#include "ev_vars.h"
		239	#undef VAR
		240
		241	static int default_loop;
		242
		243	#endif
		244
		245	/*****************************************************************************/
		246
		247	inline ev_tstamp
87	ev_time (void)	248	ev_time (void)
88	{	249	{
89	#if HAVE_REALTIME	250	#if EV_USE_REALTIME
90	struct timespec ts;	251	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	252	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	253	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	254	#else
94	struct timeval tv;	255	struct timeval tv;
95	gettimeofday (&tv, 0);	256	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	257	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	258	#endif
98	}	259	}
99		260
100	static ev_tstamp	261	inline ev_tstamp
101	get_clock (void)	262	get_clock (void)
102	{	263	{
103	#if HAVE_MONOTONIC	264	#if EV_USE_MONOTONIC
104	if (have_monotonic)	265	if (expect_true (have_monotonic))
105	{	266	{
106	struct timespec ts;	267	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	268	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	269	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	270	}
110	#endif	271	#endif
111		272
112	return ev_time ();	273	return ev_time ();
113	}	274	}
114		275
		276	#if EV_MULTIPLICITY
		277	ev_tstamp
		278	ev_now (EV_P)
		279	{
		280	return ev_rt_now;
		281	}
		282	#endif
		283
		284	#define array_roundsize(type,n) ((n) | 4 & ~3)
		285
115	#define array_needsize(base,cur,cnt,init) \	286	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	287	if (expect_false ((cnt) > cur)) \
117	{ \	288	{ \
118	int newcnt = cur; \	289	int newcnt = cur; \
119	do \	290	do \
120	{ \	291	{ \
121	newcnt = (newcnt << 1) | 4 & ~3; \	292	newcnt = array_roundsize (type, newcnt << 1); \
122	} \	293	} \
123	while ((cnt) > newcnt); \	294	while ((cnt) > newcnt); \
124	\	295	\
125	base = realloc (base, sizeof (*base) * (newcnt)); \	296	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
126	init (base + cur, newcnt - cur); \	297	init (base + cur, newcnt - cur); \
127	cur = newcnt; \	298	cur = newcnt; \
128	}	299	}
		300
		301	#define array_slim(type,stem) \
		302	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		303	{ \
		304	stem ## max = array_roundsize (stem ## cnt >> 1); \
		305	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		306	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		307	}
		308
		309	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		310	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		311	#define array_free_microshit(stem) \
		312	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		313
		314	#define array_free(stem, idx) \
		315	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		316
130	/*****************************************************************************/	317	/*****************************************************************************/
131		318
132	typedef struct
133	{
134	struct ev_io *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	319	static void
145	anfds_init (ANFD *base, int count)	320	anfds_init (ANFD *base, int count)
146	{	321	{
147	while (count--)	322	while (count--)
148	{	323	{
149	base->head = 0;	324	base->head = 0;
150	base->wev = base->rev = EV_NONE;	325	base->events = EV_NONE;
		326	base->reify = 0;
		327
151	++base;	328	++base;
152	}	329	}
153	}	330	}
154		331
155	typedef struct	332	void
		333	ev_feed_event (EV_P_ void *w, int revents)
156	{	334	{
157	W w;	335	W w_ = (W)w;
158	int events;
159	} ANPENDING;
160		336
161	static ANPENDING *pendings;	337	if (w_->pending)
162	static int pendingmax, pendingcnt;
163
164	static void
165	event (W w, int events)
166	{
167	if (w->active)
168	{	338	{
169	w->pending = ++pendingcnt;
170	array_needsize (pendings, pendingmax, pendingcnt, );
171	pendings [pendingcnt - 1].w = w;
172	pendings [pendingcnt - 1].events = events;	339	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		340	return;
173	}	341	}
174	}
175		342
		343	w_->pending = ++pendingcnt [ABSPRI (w_)];
		344	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		345	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		346	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		347	}
		348
176	static void	349	static void
		350	queue_events (EV_P_ W *events, int eventcnt, int type)
		351	{
		352	int i;
		353
		354	for (i = 0; i < eventcnt; ++i)
		355	ev_feed_event (EV_A_ events [i], type);
		356	}
		357
		358	inline void
177	fd_event (int fd, int events)	359	fd_event (EV_P_ int fd, int revents)
178	{	360	{
179	ANFD *anfd = anfds + fd;	361	ANFD *anfd = anfds + fd;
180	struct ev_io *w;	362	struct ev_io *w;
181		363
182	for (w = anfd->head; w; w = w->next)	364	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
183	{	365	{
184	int ev = w->events & events;	366	int ev = w->events & revents;
185		367
186	if (ev)	368	if (ev)
187	event ((W)w, ev);	369	ev_feed_event (EV_A_ (W)w, ev);
188	}	370	}
189	}	371	}
190		372
		373	void
		374	ev_feed_fd_event (EV_P_ int fd, int revents)
		375	{
		376	fd_event (EV_A_ fd, revents);
		377	}
		378
		379	/*****************************************************************************/
		380
191	static void	381	static void
192	queue_events (W *events, int eventcnt, int type)	382	fd_reify (EV_P)
193	{	383	{
194	int i;	384	int i;
195		385
196	for (i = 0; i < eventcnt; ++i)	386	for (i = 0; i < fdchangecnt; ++i)
197	event (events [i], type);	387	{
		388	int fd = fdchanges [i];
		389	ANFD *anfd = anfds + fd;
		390	struct ev_io *w;
		391
		392	int events = 0;
		393
		394	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
		395	events |= w->events;
		396
		397	anfd->reify = 0;
		398
		399	method_modify (EV_A_ fd, anfd->events, events);
		400	anfd->events = events;
		401	}
		402
		403	fdchangecnt = 0;
		404	}
		405
		406	static void
		407	fd_change (EV_P_ int fd)
		408	{
		409	if (anfds [fd].reify)
		410	return;
		411
		412	anfds [fd].reify = 1;
		413
		414	++fdchangecnt;
		415	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
		416	fdchanges [fdchangecnt - 1] = fd;
		417	}
		418
		419	static void
		420	fd_kill (EV_P_ int fd)
		421	{
		422	struct ev_io *w;
		423
		424	while ((w = (struct ev_io *)anfds [fd].head))
		425	{
		426	ev_io_stop (EV_A_ w);
		427	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		428	}
		429	}
		430
		431	static int
		432	fd_valid (int fd)
		433	{
		434	#ifdef WIN32
		435	return !!win32_get_osfhandle (fd);
		436	#else
		437	return fcntl (fd, F_GETFD) != -1;
		438	#endif
198	}	439	}
199		440
200	/* called on EBADF to verify fds */	441	/* called on EBADF to verify fds */
201	static void	442	static void
202	fd_recheck (void)	443	fd_ebadf (EV_P)
203	{	444	{
204	int fd;	445	int fd;
205		446
206	for (fd = 0; fd < anfdmax; ++fd)	447	for (fd = 0; fd < anfdmax; ++fd)
207	if (anfds [fd].wev)	448	if (anfds [fd].events)
208	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	449	if (!fd_valid (fd) == -1 && errno == EBADF)
209	while (anfds [fd].head)	450	fd_kill (EV_A_ fd);
		451	}
		452
		453	/* called on ENOMEM in select/poll to kill some fds and retry */
		454	static void
		455	fd_enomem (EV_P)
		456	{
		457	int fd;
		458
		459	for (fd = anfdmax; fd--; )
		460	if (anfds [fd].events)
210	{	461	{
211	event ((W)anfds [fd].head, EV_ERROR);	462	fd_kill (EV_A_ fd);
212	evio_stop (anfds [fd].head);	463	return;
213	}	464	}
		465	}
		466
		467	/* usually called after fork if method needs to re-arm all fds from scratch */
		468	static void
		469	fd_rearm_all (EV_P)
		470	{
		471	int fd;
		472
		473	/* this should be highly optimised to not do anything but set a flag */
		474	for (fd = 0; fd < anfdmax; ++fd)
		475	if (anfds [fd].events)
		476	{
		477	anfds [fd].events = 0;
		478	fd_change (EV_A_ fd);
		479	}
214	}	480	}
215		481
216	/*****************************************************************************/	482	/*****************************************************************************/
217		483
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	484	static void
225	upheap (WT *timers, int k)	485	upheap (WT *heap, int k)
226	{	486	{
227	WT w = timers [k];	487	WT w = heap [k];
228		488
229	while (k && timers [k >> 1]->at > w->at)	489	while (k && heap [k >> 1]->at > w->at)
230	{	490	{
231	timers [k] = timers [k >> 1];	491	heap [k] = heap [k >> 1];
232	timers [k]->active = k + 1;	492	((W)heap [k])->active = k + 1;
233	k >>= 1;	493	k >>= 1;
234	}	494	}
235		495
236	timers [k] = w;	496	heap [k] = w;
237	timers [k]->active = k + 1;	497	((W)heap [k])->active = k + 1;
238		498
239	}	499	}
240		500
241	static void	501	static void
242	downheap (WT *timers, int N, int k)	502	downheap (WT *heap, int N, int k)
243	{	503	{
244	WT w = timers [k];	504	WT w = heap [k];
245		505
246	while (k < (N >> 1))	506	while (k < (N >> 1))
247	{	507	{
248	int j = k << 1;	508	int j = k << 1;
249		509
250	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	510	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
251	++j;	511	++j;
252		512
253	if (w->at <= timers [j]->at)	513	if (w->at <= heap [j]->at)
254	break;	514	break;
255		515
256	timers [k] = timers [j];	516	heap [k] = heap [j];
257	timers [k]->active = k + 1;	517	((W)heap [k])->active = k + 1;
258	k = j;	518	k = j;
259	}	519	}
260		520
261	timers [k] = w;	521	heap [k] = w;
262	timers [k]->active = k + 1;	522	((W)heap [k])->active = k + 1;
		523	}
		524
		525	inline void
		526	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		527	{
		528	ev_tstamp old_at = heap [k]->at;
		529	heap [k]->at = at;
		530
		531	if (old_at < at)
		532	downheap (heap, N, k);
		533	else
		534	upheap (heap, k);
263	}	535	}
264		536
265	/*****************************************************************************/	537	/*****************************************************************************/
266		538
267	typedef struct	539	typedef struct
268	{	540	{
269	struct ev_signal *head;	541	WL head;
270	sig_atomic_t gotsig;	542	sig_atomic_t volatile gotsig;
271	} ANSIG;	543	} ANSIG;
272		544
273	static ANSIG *signals;	545	static ANSIG *signals;
274	static int signalmax;	546	static int signalmax;
275		547
276	static int sigpipe [2];	548	static int sigpipe [2];
277	static sig_atomic_t gotsig;	549	static sig_atomic_t volatile gotsig;
278	static struct ev_io sigev;	550	static struct ev_io sigev;
279		551
280	static void	552	static void
281	signals_init (ANSIG *base, int count)	553	signals_init (ANSIG *base, int count)
282	{	554	{
283	while (count--)	555	while (count--)
284	{	556	{
285	base->head = 0;	557	base->head = 0;
286	base->gotsig = 0;	558	base->gotsig = 0;
		559
287	++base;	560	++base;
288	}	561	}
289	}	562	}
290		563
291	static void	564	static void
292	sighandler (int signum)	565	sighandler (int signum)
293	{	566	{
		567	#if WIN32
		568	signal (signum, sighandler);
		569	#endif
		570
294	signals [signum - 1].gotsig = 1;	571	signals [signum - 1].gotsig = 1;
295		572
296	if (!gotsig)	573	if (!gotsig)
297	{	574	{
		575	int old_errno = errno;
298	gotsig = 1;	576	gotsig = 1;
		577	#ifdef WIN32
		578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		579	#else
299	write (sigpipe [1], &gotsig, 1);	580	write (sigpipe [1], &signum, 1);
		581	#endif
		582	errno = old_errno;
300	}	583	}
301	}	584	}
302		585
		586	void
		587	ev_feed_signal_event (EV_P_ int signum)
		588	{
		589	WL w;
		590
		591	#if EV_MULTIPLICITY
		592	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		593	#endif
		594
		595	--signum;
		596
		597	if (signum < 0 || signum >= signalmax)
		598	return;
		599
		600	signals [signum].gotsig = 0;
		601
		602	for (w = signals [signum].head; w; w = w->next)
		603	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		604	}
		605
303	static void	606	static void
304	sigcb (struct ev_io *iow, int revents)	607	sigcb (EV_P_ struct ev_io *iow, int revents)
305	{	608	{
306	struct ev_signal *w;
307	int sig;	609	int signum;
308		610
		611	#ifdef WIN32
		612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		613	#else
		614	read (sigpipe [0], &revents, 1);
		615	#endif
309	gotsig = 0;	616	gotsig = 0;
310	read (sigpipe [0], &revents, 1);
311		617
312	for (sig = signalmax; sig--; )	618	for (signum = signalmax; signum--; )
313	if (signals [sig].gotsig)	619	if (signals [signum].gotsig)
314	{	620	ev_feed_signal_event (EV_A_ signum + 1);
315	signals [sig].gotsig = 0;
316
317	for (w = signals [sig].head; w; w = w->next)
318	event ((W)w, EV_SIGNAL);
319	}
320	}	621	}
321		622
322	static void	623	static void
323	siginit (void)	624	siginit (EV_P)
324	{	625	{
		626	#ifndef WIN32
325	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	627	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
326	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	628	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
327		629
328	/* rather than sort out wether we really need nb, set it */	630	/* rather than sort out wether we really need nb, set it */
329	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	631	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
330	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	632	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		633	#endif
331		634
332	evio_set (&sigev, sigpipe [0], EV_READ);	635	ev_io_set (&sigev, sigpipe [0], EV_READ);
333	evio_start (&sigev);	636	ev_io_start (EV_A_ &sigev);
		637	ev_unref (EV_A); /* child watcher should not keep loop alive */
334	}	638	}
335		639
336	/*****************************************************************************/	640	/*****************************************************************************/
337		641
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];	642	static struct ev_child *childs [PID_HASHSIZE];
		643
		644	#ifndef WIN32
		645
350	static struct ev_signal childev;	646	static struct ev_signal childev;
351		647
352	#ifndef WCONTINUED	648	#ifndef WCONTINUED
353	# define WCONTINUED 0	649	# define WCONTINUED 0
354	#endif	650	#endif
355		651
356	static void	652	static void
357	childcb (struct ev_signal *sw, int revents)	653	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
358	{	654	{
359	struct ev_child *w;	655	struct ev_child *w;
		656
		657	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		658	if (w->pid == pid || !w->pid)
		659	{
		660	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		661	w->rpid = pid;
		662	w->rstatus = status;
		663	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		664	}
		665	}
		666
		667	static void
		668	childcb (EV_P_ struct ev_signal *sw, int revents)
		669	{
360	int pid, status;	670	int pid, status;
361		671
362	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	672	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
363	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	673	{
364	if (w->pid == pid || w->pid == -1)	674	/* make sure we are called again until all childs have been reaped */
365	{	675	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
366	w->status = status;	676
367	event ((W)w, EV_CHILD);	677	child_reap (EV_A_ sw, pid, pid, status);
368	}	678	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		679	}
369	}	680	}
		681
		682	#endif
370		683
371	/*****************************************************************************/	684	/*****************************************************************************/
372		685
		686	#if EV_USE_KQUEUE
		687	# include "ev_kqueue.c"
		688	#endif
373	#if HAVE_EPOLL	689	#if EV_USE_EPOLL
374	# include "ev_epoll.c"	690	# include "ev_epoll.c"
375	#endif	691	#endif
		692	#if EV_USE_POLL
		693	# include "ev_poll.c"
		694	#endif
376	#if HAVE_SELECT	695	#if EV_USE_SELECT
377	# include "ev_select.c"	696	# include "ev_select.c"
378	#endif	697	#endif
379		698
380	int	699	int
381	ev_version_major (void)	700	ev_version_major (void)
…		…
387	ev_version_minor (void)	706	ev_version_minor (void)
388	{	707	{
389	return EV_VERSION_MINOR;	708	return EV_VERSION_MINOR;
390	}	709	}
391		710
392	int ev_init (int flags)	711	/* return true if we are running with elevated privileges and should ignore env variables */
		712	static int
		713	enable_secure (void)
393	{	714	{
		715	#ifdef WIN32
		716	return 0;
		717	#else
		718	return getuid () != geteuid ()
		719	|| getgid () != getegid ();
		720	#endif
		721	}
		722
		723	int
		724	ev_method (EV_P)
		725	{
		726	return method;
		727	}
		728
		729	static void
		730	loop_init (EV_P_ int methods)
		731	{
394	if (!ev_method)	732	if (!method)
395	{	733	{
396	#if HAVE_MONOTONIC	734	#if EV_USE_MONOTONIC
397	{	735	{
398	struct timespec ts;	736	struct timespec ts;
399	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
400	have_monotonic = 1;	738	have_monotonic = 1;
401	}	739	}
402	#endif	740	#endif
403		741
404	ev_now = ev_time ();	742	ev_rt_now = ev_time ();
405	now = get_clock ();	743	mn_now = get_clock ();
		744	now_floor = mn_now;
406	diff = ev_now - now;	745	rtmn_diff = ev_rt_now - mn_now;
407		746
		747	if (methods == EVMETHOD_AUTO)
		748	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		749	methods = atoi (getenv ("LIBEV_METHODS"));
		750	else
		751	methods = EVMETHOD_ANY;
		752
		753	method = 0;
		754	#if EV_USE_WIN32
		755	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		756	#endif
		757	#if EV_USE_KQUEUE
		758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		759	#endif
		760	#if EV_USE_EPOLL
		761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		762	#endif
		763	#if EV_USE_POLL
		764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		765	#endif
		766	#if EV_USE_SELECT
		767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
		768	#endif
		769
		770	ev_init (&sigev, sigcb);
		771	ev_set_priority (&sigev, EV_MAXPRI);
		772	}
		773	}
		774
		775	void
		776	loop_destroy (EV_P)
		777	{
		778	int i;
		779
		780	#if EV_USE_WIN32
		781	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		782	#endif
		783	#if EV_USE_KQUEUE
		784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		785	#endif
		786	#if EV_USE_EPOLL
		787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		788	#endif
		789	#if EV_USE_POLL
		790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		791	#endif
		792	#if EV_USE_SELECT
		793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		794	#endif
		795
		796	for (i = NUMPRI; i--; )
		797	array_free (pending, [i]);
		798
		799	/* have to use the microsoft-never-gets-it-right macro */
		800	array_free_microshit (fdchange);
		801	array_free_microshit (timer);
		802	array_free_microshit (periodic);
		803	array_free_microshit (idle);
		804	array_free_microshit (prepare);
		805	array_free_microshit (check);
		806
		807	method = 0;
		808	}
		809
		810	static void
		811	loop_fork (EV_P)
		812	{
		813	#if EV_USE_EPOLL
		814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		815	#endif
		816	#if EV_USE_KQUEUE
		817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		818	#endif
		819
		820	if (ev_is_active (&sigev))
		821	{
		822	/* default loop */
		823
		824	ev_ref (EV_A);
		825	ev_io_stop (EV_A_ &sigev);
		826	close (sigpipe [0]);
		827	close (sigpipe [1]);
		828
		829	while (pipe (sigpipe))
		830	syserr ("(libev) error creating pipe");
		831
		832	siginit (EV_A);
		833	}
		834
		835	postfork = 0;
		836	}
		837
		838	#if EV_MULTIPLICITY
		839	struct ev_loop *
		840	ev_loop_new (int methods)
		841	{
		842	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		843
		844	memset (loop, 0, sizeof (struct ev_loop));
		845
		846	loop_init (EV_A_ methods);
		847
		848	if (ev_method (EV_A))
		849	return loop;
		850
		851	return 0;
		852	}
		853
		854	void
		855	ev_loop_destroy (EV_P)
		856	{
		857	loop_destroy (EV_A);
		858	ev_free (loop);
		859	}
		860
		861	void
		862	ev_loop_fork (EV_P)
		863	{
		864	postfork = 1;
		865	}
		866
		867	#endif
		868
		869	#if EV_MULTIPLICITY
		870	struct ev_loop *
		871	#else
		872	int
		873	#endif
		874	ev_default_loop (int methods)
		875	{
		876	if (sigpipe [0] == sigpipe [1])
408	if (pipe (sigpipe))	877	if (pipe (sigpipe))
409	return 0;	878	return 0;
410		879
411	ev_method = EVMETHOD_NONE;	880	if (!default_loop)
412	#if HAVE_EPOLL	881	{
413	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	882	#if EV_MULTIPLICITY
		883	struct ev_loop *loop = default_loop = &default_loop_struct;
		884	#else
		885	default_loop = 1;
414	#endif	886	#endif
415	#if HAVE_SELECT
416	if (ev_method == EVMETHOD_NONE) select_init (flags);
417	#endif
418		887
		888	loop_init (EV_A_ methods);
		889
419	if (ev_method)	890	if (ev_method (EV_A))
420	{	891	{
421	evw_init (&sigev, sigcb);
422	siginit ();	892	siginit (EV_A);
423		893
		894	#ifndef WIN32
424	evsignal_init (&childev, childcb, SIGCHLD);	895	ev_signal_init (&childev, childcb, SIGCHLD);
		896	ev_set_priority (&childev, EV_MAXPRI);
425	evsignal_start (&childev);	897	ev_signal_start (EV_A_ &childev);
		898	ev_unref (EV_A); /* child watcher should not keep loop alive */
		899	#endif
426	}	900	}
		901	else
		902	default_loop = 0;
427	}	903	}
428		904
429	return ev_method;	905	return default_loop;
		906	}
		907
		908	void
		909	ev_default_destroy (void)
		910	{
		911	#if EV_MULTIPLICITY
		912	struct ev_loop *loop = default_loop;
		913	#endif
		914
		915	#ifndef WIN32
		916	ev_ref (EV_A); /* child watcher */
		917	ev_signal_stop (EV_A_ &childev);
		918	#endif
		919
		920	ev_ref (EV_A); /* signal watcher */
		921	ev_io_stop (EV_A_ &sigev);
		922
		923	close (sigpipe [0]); sigpipe [0] = 0;
		924	close (sigpipe [1]); sigpipe [1] = 0;
		925
		926	loop_destroy (EV_A);
		927	}
		928
		929	void
		930	ev_default_fork (void)
		931	{
		932	#if EV_MULTIPLICITY
		933	struct ev_loop *loop = default_loop;
		934	#endif
		935
		936	if (method)
		937	postfork = 1;
430	}	938	}
431		939
432	/*****************************************************************************/	940	/*****************************************************************************/
433		941
434	void
435	ev_prefork (void)
436	{
437	/* nop */
438	}
439
440	void
441	ev_postfork_parent (void)
442	{
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	942	static int
464	fd_reify (void)	943	any_pending (EV_P)
465	{	944	{
466	int i;	945	int pri;
467		946
468	for (i = 0; i < fdchangecnt; ++i)	947	for (pri = NUMPRI; pri--; )
469	{	948	if (pendingcnt [pri])
470	int fd = fdchanges [i];	949	return 1;
471	ANFD *anfd = anfds + fd;
472	struct ev_io *w;
473		950
474	int wev = 0;	951	return 0;
		952	}
475		953
476	for (w = anfd->head; w; w = w->next)	954	static void
477	wev |= w->events;	955	call_pending (EV_P)
		956	{
		957	int pri;
478		958
479	if (anfd->wev != wev)	959	for (pri = NUMPRI; pri--; )
		960	while (pendingcnt [pri])
480	{	961	{
481	method_modify (fd, anfd->wev, wev);
482	anfd->wev = wev;
483	}
484	}
485
486	fdchangecnt = 0;
487	}
488
489	static void
490	call_pending (void)
491	{
492	while (pendingcnt)
493	{
494	ANPENDING *p = pendings + --pendingcnt;	962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
495		963
496	if (p->w)	964	if (p->w)
497	{	965	{
498	p->w->pending = 0;	966	p->w->pending = 0;
499	p->w->cb (p->w, p->events);	967	EV_CB_INVOKE (p->w, p->events);
500	}	968	}
501	}	969	}
502	}	970	}
503		971
504	static void	972	static void
505	timers_reify (void)	973	timers_reify (EV_P)
506	{	974	{
507	while (timercnt && timers [0]->at <= now)	975	while (timercnt && ((WT)timers [0])->at <= mn_now)
508	{	976	{
509	struct ev_timer *w = timers [0];	977	struct ev_timer *w = timers [0];
510		978
511	event ((W)w, EV_TIMEOUT);	979	assert (("inactive timer on timer heap detected", ev_is_active (w)));
512		980
513	/* first reschedule or stop timer */	981	/* first reschedule or stop timer */
514	if (w->repeat)	982	if (w->repeat)
515	{	983	{
		984	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
516	w->at = now + w->repeat;	985	((WT)w)->at = mn_now + w->repeat;
517	assert (("timer timeout in the past, negative repeat?", w->at > now));
518	downheap ((WT *)timers, timercnt, 0);	986	downheap ((WT *)timers, timercnt, 0);
519	}	987	}
520	else	988	else
521	evtimer_stop (w); /* nonrepeating: stop timer */	989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
522	}
523	}
524		990
		991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		992	}
		993	}
		994
525	static void	995	static void
526	periodics_reify (void)	996	periodics_reify (EV_P)
527	{	997	{
528	while (periodiccnt && periodics [0]->at <= ev_now)	998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
529	{	999	{
530	struct ev_periodic *w = periodics [0];	1000	struct ev_periodic *w = periodics [0];
531		1001
		1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1003
532	/* first reschedule or stop timer */	1004	/* first reschedule or stop timer */
533	if (w->interval)	1005	if (w->reschedule_cb)
534	{	1006	{
		1007	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1008
		1009	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1010	downheap ((WT *)periodics, periodiccnt, 0);
		1011	}
		1012	else if (w->interval)
		1013	{
535	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1014	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
536	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1015	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
537	downheap ((WT *)periodics, periodiccnt, 0);	1016	downheap ((WT *)periodics, periodiccnt, 0);
538	}	1017	}
539	else	1018	else
540	evperiodic_stop (w); /* nonrepeating: stop timer */	1019	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
541		1020
542	event ((W)w, EV_TIMEOUT);	1021	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
543	}	1022	}
544	}	1023	}
545		1024
546	static void	1025	static void
547	periodics_reschedule (ev_tstamp diff)	1026	periodics_reschedule (EV_P)
548	{	1027	{
549	int i;	1028	int i;
550		1029
551	/* adjust periodics after time jump */	1030	/* adjust periodics after time jump */
552	for (i = 0; i < periodiccnt; ++i)	1031	for (i = 0; i < periodiccnt; ++i)
553	{	1032	{
554	struct ev_periodic *w = periodics [i];	1033	struct ev_periodic *w = periodics [i];
555		1034
		1035	if (w->reschedule_cb)
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
556	if (w->interval)	1037	else if (w->interval)
		1038	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1039	}
		1040
		1041	/* now rebuild the heap */
		1042	for (i = periodiccnt >> 1; i--; )
		1043	downheap ((WT *)periodics, periodiccnt, i);
		1044	}
		1045
		1046	inline int
		1047	time_update_monotonic (EV_P)
		1048	{
		1049	mn_now = get_clock ();
		1050
		1051	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1052	{
		1053	ev_rt_now = rtmn_diff + mn_now;
		1054	return 0;
		1055	}
		1056	else
		1057	{
		1058	now_floor = mn_now;
		1059	ev_rt_now = ev_time ();
		1060	return 1;
		1061	}
		1062	}
		1063
		1064	static void
		1065	time_update (EV_P)
		1066	{
		1067	int i;
		1068
		1069	#if EV_USE_MONOTONIC
		1070	if (expect_true (have_monotonic))
		1071	{
		1072	if (time_update_monotonic (EV_A))
557	{	1073	{
558	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1074	ev_tstamp odiff = rtmn_diff;
559		1075
560	if (fabs (diff) >= 1e-4)	1076	for (i = 4; --i; ) /* loop a few times, before making important decisions */
561	{	1077	{
562	evperiodic_stop (w);	1078	rtmn_diff = ev_rt_now - mn_now;
563	evperiodic_start (w);
564		1079
565	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1080	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1081	return; /* all is well */
		1082
		1083	ev_rt_now = ev_time ();
		1084	mn_now = get_clock ();
		1085	now_floor = mn_now;
566	}	1086	}
		1087
		1088	periodics_reschedule (EV_A);
		1089	/* no timer adjustment, as the monotonic clock doesn't jump */
		1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
567	}	1091	}
568	}	1092	}
569	}	1093	else
570		1094	#endif
571	static void	1095	{
572	time_update (void)
573	{
574	int i;
575
576	ev_now = ev_time ();	1096	ev_rt_now = ev_time ();
577		1097
578	if (have_monotonic)	1098	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
579	{
580	ev_tstamp odiff = diff;
581
582	for (i = 4; --i; ) /* loop a few times, before making important decisions */
583	{	1099	{
584	now = get_clock ();
585	diff = ev_now - now;
586
587	if (fabs (odiff - diff) < MIN_TIMEJUMP)
588	return; /* all is well */
589
590	ev_now = ev_time ();
591	}
592
593	periodics_reschedule (diff - odiff);
594	/* no timer adjustment, as the monotonic clock doesn't jump */
595	}
596	else
597	{
598	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
599	{
600	periodics_reschedule (ev_now - now);	1100	periodics_reschedule (EV_A);
601		1101
602	/* adjust timers. this is easy, as the offset is the same for all */	1102	/* adjust timers. this is easy, as the offset is the same for all */
603	for (i = 0; i < timercnt; ++i)	1103	for (i = 0; i < timercnt; ++i)
604	timers [i]->at += diff;	1104	((WT)timers [i])->at += ev_rt_now - mn_now;
605	}	1105	}
606		1106
607	now = ev_now;	1107	mn_now = ev_rt_now;
608	}	1108	}
609	}	1109	}
610		1110
611	int ev_loop_done;	1111	void
		1112	ev_ref (EV_P)
		1113	{
		1114	++activecnt;
		1115	}
612		1116
		1117	void
		1118	ev_unref (EV_P)
		1119	{
		1120	--activecnt;
		1121	}
		1122
		1123	static int loop_done;
		1124
		1125	void
613	void ev_loop (int flags)	1126	ev_loop (EV_P_ int flags)
614	{	1127	{
615	double block;	1128	double block;
616	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1129	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
617		1130
618	do	1131	do
619	{	1132	{
620	/* queue check watchers (and execute them) */	1133	/* queue check watchers (and execute them) */
621	if (preparecnt)	1134	if (expect_false (preparecnt))
622	{	1135	{
623	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
624	call_pending ();	1137	call_pending (EV_A);
625	}	1138	}
626		1139
		1140	/* we might have forked, so reify kernel state if necessary */
		1141	if (expect_false (postfork))
		1142	loop_fork (EV_A);
		1143
627	/* update fd-related kernel structures */	1144	/* update fd-related kernel structures */
628	fd_reify ();	1145	fd_reify (EV_A);
629		1146
630	/* calculate blocking time */	1147	/* calculate blocking time */
631		1148
632	/* we only need this for !monotonic clockor timers, but as we basically	1149	/* we only need this for !monotonic clock or timers, but as we basically
633	always have timers, we just calculate it always */	1150	always have timers, we just calculate it always */
		1151	#if EV_USE_MONOTONIC
		1152	if (expect_true (have_monotonic))
		1153	time_update_monotonic (EV_A);
		1154	else
		1155	#endif
		1156	{
634	ev_now = ev_time ();	1157	ev_rt_now = ev_time ();
		1158	mn_now = ev_rt_now;
		1159	}
635		1160
636	if (flags & EVLOOP_NONBLOCK || idlecnt)	1161	if (flags & EVLOOP_NONBLOCK || idlecnt)
637	block = 0.;	1162	block = 0.;
638	else	1163	else
639	{	1164	{
640	block = MAX_BLOCKTIME;	1165	block = MAX_BLOCKTIME;
641		1166
642	if (timercnt)	1167	if (timercnt)
643	{	1168	{
644	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
645	if (block > to) block = to;	1170	if (block > to) block = to;
646	}	1171	}
647		1172
648	if (periodiccnt)	1173	if (periodiccnt)
649	{	1174	{
650	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1175	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
651	if (block > to) block = to;	1176	if (block > to) block = to;
652	}	1177	}
653		1178
654	if (block < 0.) block = 0.;	1179	if (block < 0.) block = 0.;
655	}	1180	}
656		1181
657	method_poll (block);	1182	method_poll (EV_A_ block);
658		1183
659	/* update ev_now, do magic */	1184	/* update ev_rt_now, do magic */
660	time_update ();	1185	time_update (EV_A);
661		1186
662	/* queue pending timers and reschedule them */	1187	/* queue pending timers and reschedule them */
663	timers_reify (); /* relative timers called last */	1188	timers_reify (EV_A); /* relative timers called last */
664	periodics_reify (); /* absolute timers called first */	1189	periodics_reify (EV_A); /* absolute timers called first */
665		1190
666	/* queue idle watchers unless io or timers are pending */	1191	/* queue idle watchers unless io or timers are pending */
667	if (!pendingcnt)	1192	if (idlecnt && !any_pending (EV_A))
668	queue_events ((W *)idles, idlecnt, EV_IDLE);	1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
669		1194
670	/* queue check watchers, to be executed first */	1195	/* queue check watchers, to be executed first */
671	if (checkcnt)	1196	if (checkcnt)
672	queue_events ((W *)checks, checkcnt, EV_CHECK);	1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
673		1198
674	call_pending ();	1199	call_pending (EV_A);
675	}	1200	}
676	while (!ev_loop_done);	1201	while (activecnt && !loop_done);
677		1202
678	if (ev_loop_done != 2)	1203	if (loop_done != 2)
679	ev_loop_done = 0;	1204	loop_done = 0;
		1205	}
		1206
		1207	void
		1208	ev_unloop (EV_P_ int how)
		1209	{
		1210	loop_done = how;
680	}	1211	}
681		1212
682	/*****************************************************************************/	1213	/*****************************************************************************/
683		1214
684	static void	1215	inline void
685	wlist_add (WL *head, WL elem)	1216	wlist_add (WL *head, WL elem)
686	{	1217	{
687	elem->next = *head;	1218	elem->next = *head;
688	*head = elem;	1219	*head = elem;
689	}	1220	}
690		1221
691	static void	1222	inline void
692	wlist_del (WL *head, WL elem)	1223	wlist_del (WL *head, WL elem)
693	{	1224	{
694	while (*head)	1225	while (*head)
695	{	1226	{
696	if (*head == elem)	1227	if (*head == elem)
…		…
701		1232
702	head = &(*head)->next;	1233	head = &(*head)->next;
703	}	1234	}
704	}	1235	}
705		1236
706	static void	1237	inline void
707	ev_clear (W w)	1238	ev_clear_pending (EV_P_ W w)
708	{	1239	{
709	if (w->pending)	1240	if (w->pending)
710	{	1241	{
711	pendings [w->pending - 1].w = 0;	1242	pendings [ABSPRI (w)][w->pending - 1].w = 0;
712	w->pending = 0;	1243	w->pending = 0;
713	}	1244	}
714	}	1245	}
715		1246
716	static void	1247	inline void
717	ev_start (W w, int active)	1248	ev_start (EV_P_ W w, int active)
718	{	1249	{
		1250	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1251	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1252
719	w->active = active;	1253	w->active = active;
		1254	ev_ref (EV_A);
720	}	1255	}
721		1256
722	static void	1257	inline void
723	ev_stop (W w)	1258	ev_stop (EV_P_ W w)
724	{	1259	{
		1260	ev_unref (EV_A);
725	w->active = 0;	1261	w->active = 0;
726	}	1262	}
727		1263
728	/*****************************************************************************/	1264	/*****************************************************************************/
729		1265
730	void	1266	void
731	evio_start (struct ev_io *w)	1267	ev_io_start (EV_P_ struct ev_io *w)
732	{	1268	{
		1269	int fd = w->fd;
		1270
733	if (ev_is_active (w))	1271	if (ev_is_active (w))
734	return;	1272	return;
735		1273
736	int fd = w->fd;	1274	assert (("ev_io_start called with negative fd", fd >= 0));
737		1275
738	ev_start ((W)w, 1);	1276	ev_start (EV_A_ (W)w, 1);
739	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1277	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
740	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1278	wlist_add ((WL *)&anfds[fd].head, (WL)w);
741		1279
742	++fdchangecnt;	1280	fd_change (EV_A_ fd);
743	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
744	fdchanges [fdchangecnt - 1] = fd;
745
746	if (w->fd == 9)
747	printf ("start %p:%x\n", w, w->events);//D
748	}	1281	}
749		1282
750	void	1283	void
751	evio_stop (struct ev_io *w)	1284	ev_io_stop (EV_P_ struct ev_io *w)
752	{	1285	{
753	if (w->fd == 9)	1286	ev_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))	1287	if (!ev_is_active (w))
757	return;	1288	return;
758		1289
759	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1290	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
760	ev_stop ((W)w);	1291	ev_stop (EV_A_ (W)w);
761		1292
762	++fdchangecnt;	1293	fd_change (EV_A_ w->fd);
763	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
764	fdchanges [fdchangecnt - 1] = w->fd;
765	}	1294	}
766		1295
767	void	1296	void
768	evtimer_start (struct ev_timer *w)	1297	ev_timer_start (EV_P_ struct ev_timer *w)
769	{	1298	{
770	if (ev_is_active (w))	1299	if (ev_is_active (w))
771	return;	1300	return;
772		1301
773	w->at += now;	1302	((WT)w)->at += mn_now;
774		1303
775	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1304	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
776		1305
777	ev_start ((W)w, ++timercnt);	1306	ev_start (EV_A_ (W)w, ++timercnt);
778	array_needsize (timers, timermax, timercnt, );	1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
779	timers [timercnt - 1] = w;	1308	timers [timercnt - 1] = w;
780	upheap ((WT *)timers, timercnt - 1);	1309	upheap ((WT *)timers, timercnt - 1);
781	}
782		1310
		1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1312	}
		1313
783	void	1314	void
784	evtimer_stop (struct ev_timer *w)	1315	ev_timer_stop (EV_P_ struct ev_timer *w)
785	{	1316	{
786	ev_clear ((W)w);	1317	ev_clear_pending (EV_A_ (W)w);
787	if (!ev_is_active (w))	1318	if (!ev_is_active (w))
788	return;	1319	return;
789		1320
		1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1322
790	if (w->active < timercnt--)	1323	if (((W)w)->active < timercnt--)
791	{	1324	{
792	timers [w->active - 1] = timers [timercnt];	1325	timers [((W)w)->active - 1] = timers [timercnt];
793	downheap ((WT *)timers, timercnt, w->active - 1);	1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
794	}	1327	}
795		1328
796	w->at = w->repeat;	1329	((WT)w)->at = w->repeat;
797		1330
798	ev_stop ((W)w);	1331	ev_stop (EV_A_ (W)w);
799	}	1332	}
800		1333
801	void	1334	void
802	evtimer_again (struct ev_timer *w)	1335	ev_timer_again (EV_P_ struct ev_timer *w)
803	{	1336	{
804	if (ev_is_active (w))	1337	if (ev_is_active (w))
805	{	1338	{
806	if (w->repeat)	1339	if (w->repeat)
807	{
808	w->at = now + w->repeat;
809	downheap ((WT *)timers, timercnt, w->active - 1);	1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
810	}
811	else	1341	else
812	evtimer_stop (w);	1342	ev_timer_stop (EV_A_ w);
813	}	1343	}
814	else if (w->repeat)	1344	else if (w->repeat)
815	evtimer_start (w);	1345	ev_timer_start (EV_A_ w);
816	}	1346	}
817		1347
818	void	1348	void
819	evperiodic_start (struct ev_periodic *w)	1349	ev_periodic_start (EV_P_ struct ev_periodic *w)
820	{	1350	{
821	if (ev_is_active (w))	1351	if (ev_is_active (w))
822	return;	1352	return;
823		1353
824	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1354	if (w->reschedule_cb)
825		1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1356	else if (w->interval)
		1357	{
		1358	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 */	1359	/* 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;	1360	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1361	}
829		1362
830	ev_start ((W)w, ++periodiccnt);	1363	ev_start (EV_A_ (W)w, ++periodiccnt);
831	array_needsize (periodics, periodicmax, periodiccnt, );	1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
832	periodics [periodiccnt - 1] = w;	1365	periodics [periodiccnt - 1] = w;
833	upheap ((WT *)periodics, periodiccnt - 1);	1366	upheap ((WT *)periodics, periodiccnt - 1);
834	}
835		1367
		1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1369	}
		1370
836	void	1371	void
837	evperiodic_stop (struct ev_periodic *w)	1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)
838	{	1373	{
839	ev_clear ((W)w);	1374	ev_clear_pending (EV_A_ (W)w);
840	if (!ev_is_active (w))	1375	if (!ev_is_active (w))
841	return;	1376	return;
842		1377
		1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1379
843	if (w->active < periodiccnt--)	1380	if (((W)w)->active < periodiccnt--)
844	{	1381	{
845	periodics [w->active - 1] = periodics [periodiccnt];	1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];
846	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
847	}	1384	}
848		1385
849	ev_stop ((W)w);	1386	ev_stop (EV_A_ (W)w);
850	}	1387	}
851		1388
852	void	1389	void
853	evsignal_start (struct ev_signal *w)	1390	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1391	{
		1392	/* TODO: use adjustheap and recalculation */
		1393	ev_periodic_stop (EV_A_ w);
		1394	ev_periodic_start (EV_A_ w);
		1395	}
		1396
		1397	void
		1398	ev_idle_start (EV_P_ struct ev_idle *w)
854	{	1399	{
855	if (ev_is_active (w))	1400	if (ev_is_active (w))
856	return;	1401	return;
857		1402
		1403	ev_start (EV_A_ (W)w, ++idlecnt);
		1404	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1405	idles [idlecnt - 1] = w;
		1406	}
		1407
		1408	void
		1409	ev_idle_stop (EV_P_ struct ev_idle *w)
		1410	{
		1411	ev_clear_pending (EV_A_ (W)w);
		1412	if (ev_is_active (w))
		1413	return;
		1414
		1415	idles [((W)w)->active - 1] = idles [--idlecnt];
		1416	ev_stop (EV_A_ (W)w);
		1417	}
		1418
		1419	void
		1420	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1421	{
		1422	if (ev_is_active (w))
		1423	return;
		1424
		1425	ev_start (EV_A_ (W)w, ++preparecnt);
		1426	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1427	prepares [preparecnt - 1] = w;
		1428	}
		1429
		1430	void
		1431	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1432	{
		1433	ev_clear_pending (EV_A_ (W)w);
		1434	if (ev_is_active (w))
		1435	return;
		1436
		1437	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1438	ev_stop (EV_A_ (W)w);
		1439	}
		1440
		1441	void
		1442	ev_check_start (EV_P_ struct ev_check *w)
		1443	{
		1444	if (ev_is_active (w))
		1445	return;
		1446
		1447	ev_start (EV_A_ (W)w, ++checkcnt);
		1448	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1449	checks [checkcnt - 1] = w;
		1450	}
		1451
		1452	void
		1453	ev_check_stop (EV_P_ struct ev_check *w)
		1454	{
		1455	ev_clear_pending (EV_A_ (W)w);
		1456	if (ev_is_active (w))
		1457	return;
		1458
		1459	checks [((W)w)->active - 1] = checks [--checkcnt];
		1460	ev_stop (EV_A_ (W)w);
		1461	}
		1462
		1463	#ifndef SA_RESTART
		1464	# define SA_RESTART 0
		1465	#endif
		1466
		1467	void
		1468	ev_signal_start (EV_P_ struct ev_signal *w)
		1469	{
		1470	#if EV_MULTIPLICITY
		1471	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1472	#endif
		1473	if (ev_is_active (w))
		1474	return;
		1475
		1476	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1477
858	ev_start ((W)w, 1);	1478	ev_start (EV_A_ (W)w, 1);
859	array_needsize (signals, signalmax, w->signum, signals_init);	1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
860	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
861		1481
862	if (!w->next)	1482	if (!((WL)w)->next)
863	{	1483	{
		1484	#if WIN32
		1485	signal (w->signum, sighandler);
		1486	#else
864	struct sigaction sa;	1487	struct sigaction sa;
865	sa.sa_handler = sighandler;	1488	sa.sa_handler = sighandler;
866	sigfillset (&sa.sa_mask);	1489	sigfillset (&sa.sa_mask);
867	sa.sa_flags = 0;	1490	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
868	sigaction (w->signum, &sa, 0);	1491	sigaction (w->signum, &sa, 0);
		1492	#endif
869	}	1493	}
870	}	1494	}
871		1495
872	void	1496	void
873	evsignal_stop (struct ev_signal *w)	1497	ev_signal_stop (EV_P_ struct ev_signal *w)
874	{	1498	{
875	ev_clear ((W)w);	1499	ev_clear_pending (EV_A_ (W)w);
876	if (!ev_is_active (w))	1500	if (!ev_is_active (w))
877	return;	1501	return;
878		1502
879	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1503	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
880	ev_stop ((W)w);	1504	ev_stop (EV_A_ (W)w);
881		1505
882	if (!signals [w->signum - 1].head)	1506	if (!signals [w->signum - 1].head)
883	signal (w->signum, SIG_DFL);	1507	signal (w->signum, SIG_DFL);
884	}	1508	}
885		1509
886	void evidle_start (struct ev_idle *w)	1510	void
		1511	ev_child_start (EV_P_ struct ev_child *w)
887	{	1512	{
		1513	#if EV_MULTIPLICITY
		1514	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1515	#endif
888	if (ev_is_active (w))	1516	if (ev_is_active (w))
889	return;	1517	return;
890		1518
891	ev_start ((W)w, ++idlecnt);	1519	ev_start (EV_A_ (W)w, 1);
892	array_needsize (idles, idlemax, idlecnt, );	1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
893	idles [idlecnt - 1] = w;
894	}	1521	}
895		1522
896	void evidle_stop (struct ev_idle *w)	1523	void
		1524	ev_child_stop (EV_P_ struct ev_child *w)
897	{	1525	{
898	ev_clear ((W)w);	1526	ev_clear_pending (EV_A_ (W)w);
899	if (ev_is_active (w))	1527	if (ev_is_active (w))
900	return;	1528	return;
901		1529
902	idles [w->active - 1] = idles [--idlecnt];
903	ev_stop ((W)w);
904	}
905
906	void evprepare_start (struct ev_prepare *w)
907	{
908	if (ev_is_active (w))
909	return;
910
911	ev_start ((W)w, ++preparecnt);
912	array_needsize (prepares, preparemax, preparecnt, );
913	prepares [preparecnt - 1] = w;
914	}
915
916	void evprepare_stop (struct ev_prepare *w)
917	{
918	ev_clear ((W)w);
919	if (ev_is_active (w))
920	return;
921
922	prepares [w->active - 1] = prepares [--preparecnt];
923	ev_stop ((W)w);
924	}
925
926	void evcheck_start (struct ev_check *w)
927	{
928	if (ev_is_active (w))
929	return;
930
931	ev_start ((W)w, ++checkcnt);
932	array_needsize (checks, checkmax, checkcnt, );
933	checks [checkcnt - 1] = w;
934	}
935
936	void evcheck_stop (struct ev_check *w)
937	{
938	ev_clear ((W)w);
939	if (ev_is_active (w))
940	return;
941
942	checks [w->active - 1] = checks [--checkcnt];
943	ev_stop ((W)w);
944	}
945
946	void evchild_start (struct ev_child *w)
947	{
948	if (ev_is_active (w))
949	return;
950
951	ev_start ((W)w, 1);
952	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
953	}
954
955	void evchild_stop (struct ev_child *w)
956	{
957	ev_clear ((W)w);
958	if (ev_is_active (w))
959	return;
960
961	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1530	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
962	ev_stop ((W)w);	1531	ev_stop (EV_A_ (W)w);
963	}	1532	}
964		1533
965	/*****************************************************************************/	1534	/*****************************************************************************/
966		1535
967	struct ev_once	1536	struct ev_once
…		…
971	void (*cb)(int revents, void *arg);	1540	void (*cb)(int revents, void *arg);
972	void *arg;	1541	void *arg;
973	};	1542	};
974		1543
975	static void	1544	static void
976	once_cb (struct ev_once *once, int revents)	1545	once_cb (EV_P_ struct ev_once *once, int revents)
977	{	1546	{
978	void (*cb)(int revents, void *arg) = once->cb;	1547	void (*cb)(int revents, void *arg) = once->cb;
979	void *arg = once->arg;	1548	void *arg = once->arg;
980		1549
981	evio_stop (&once->io);	1550	ev_io_stop (EV_A_ &once->io);
982	evtimer_stop (&once->to);	1551	ev_timer_stop (EV_A_ &once->to);
983	free (once);	1552	ev_free (once);
984		1553
985	cb (revents, arg);	1554	cb (revents, arg);
986	}	1555	}
987		1556
988	static void	1557	static void
989	once_cb_io (struct ev_io *w, int revents)	1558	once_cb_io (EV_P_ struct ev_io *w, int revents)
990	{	1559	{
991	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1560	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
992	}	1561	}
993		1562
994	static void	1563	static void
995	once_cb_to (struct ev_timer *w, int revents)	1564	once_cb_to (EV_P_ struct ev_timer *w, int revents)
996	{	1565	{
997	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1566	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
998	}	1567	}
999		1568
1000	void	1569	void
1001	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1570	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1002	{	1571	{
1003	struct ev_once *once = malloc (sizeof (struct ev_once));	1572	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1004		1573
1005	if (!once)	1574	if (!once)
1006	cb (EV_ERROR, arg);	1575	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1007	else	1576	else
1008	{	1577	{
1009	once->cb = cb;	1578	once->cb = cb;
1010	once->arg = arg;	1579	once->arg = arg;
1011		1580
1012	evw_init (&once->io, once_cb_io);	1581	ev_init (&once->io, once_cb_io);
1013
1014	if (fd >= 0)	1582	if (fd >= 0)
1015	{	1583	{
1016	evio_set (&once->io, fd, events);	1584	ev_io_set (&once->io, fd, events);
1017	evio_start (&once->io);	1585	ev_io_start (EV_A_ &once->io);
1018	}	1586	}
1019		1587
1020	evw_init (&once->to, once_cb_to);	1588	ev_init (&once->to, once_cb_to);
1021
1022	if (timeout >= 0.)	1589	if (timeout >= 0.)
1023	{	1590	{
1024	evtimer_set (&once->to, timeout, 0.);	1591	ev_timer_set (&once->to, timeout, 0.);
1025	evtimer_start (&once->to);	1592	ev_timer_start (EV_A_ &once->to);
1026	}	1593	}
1027	}	1594	}
1028	}	1595	}
1029		1596
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	{
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	}
1107
1108	#endif
1109
1110
1111
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