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Comparing libev/ev.c (file contents):
Revision 1.8 by root, Wed Oct 31 00:32:33 2007 UTC vs.
Revision 1.44 by root, Fri Nov 2 20:59:14 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	#if EV_USE_CONFIG_H
		32	# include "config.h"
		33	#endif
		34
1	#include <math.h>	35	#include <math.h>
2	#include <stdlib.h>	36	#include <stdlib.h>
3	#include <unistd.h>	37	#include <unistd.h>
4	#include <fcntl.h>	38	#include <fcntl.h>
5	#include <signal.h>	39	#include <signal.h>
		40	#include <stddef.h>
6		41
7	#include <stdio.h>	42	#include <stdio.h>
8		43
9	#include <assert.h>	44	#include <assert.h>
10	#include <errno.h>	45	#include <errno.h>
		46	#include <sys/types.h>
		47	#include <sys/wait.h>
11	#include <sys/time.h>	48	#include <sys/time.h>
12	#include <time.h>	49	#include <time.h>
13		50
		51	/**/
		52
		53	#ifndef EV_USE_MONOTONIC
		54	# define EV_USE_MONOTONIC 1
		55	#endif
		56
		57	#ifndef EV_USE_SELECT
		58	# define EV_USE_SELECT 1
		59	#endif
		60
		61	#ifndef EV_USE_POLL
		62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		63	#endif
		64
		65	#ifndef EV_USE_EPOLL
		66	# define EV_USE_EPOLL 0
		67	#endif
		68
		69	#ifndef EV_USE_KQUEUE
		70	# define EV_USE_KQUEUE 0
		71	#endif
		72
		73	#ifndef EV_USE_REALTIME
		74	# define EV_USE_REALTIME 1
		75	#endif
		76
		77	/**/
		78
14	#ifdef CLOCK_MONOTONIC	79	#ifndef CLOCK_MONOTONIC
		80	# undef EV_USE_MONOTONIC
15	# define HAVE_MONOTONIC 1	81	# define EV_USE_MONOTONIC 0
16	#endif	82	#endif
17		83
		84	#ifndef CLOCK_REALTIME
		85	# undef EV_USE_REALTIME
18	#define HAVE_REALTIME 1	86	# define EV_USE_REALTIME 0
19	#define HAVE_EPOLL 1	87	#endif
20	#define HAVE_SELECT 1	88
		89	/**/
21		90
22	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	91	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
23	#define MAX_BLOCKTIME 60.	92	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		93	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		94	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
24		95
25	#include "ev.h"	96	#include "ev.h"
26		97
		98	#if __GNUC__ >= 3
		99	# define expect(expr,value) __builtin_expect ((expr),(value))
		100	# define inline inline
		101	#else
		102	# define expect(expr,value) (expr)
		103	# define inline static
		104	#endif
		105
		106	#define expect_false(expr) expect ((expr) != 0, 0)
		107	#define expect_true(expr) expect ((expr) != 0, 1)
		108
		109	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		110	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		111
27	struct ev_watcher {	112	typedef struct ev_watcher *W;
28	EV_WATCHER (ev_watcher);
29	};
30
31	struct ev_watcher_list {	113	typedef struct ev_watcher_list *WL;
32	EV_WATCHER_LIST (ev_watcher_list);	114	typedef struct ev_watcher_time *WT;
33	};
34		115
35	static ev_tstamp now, diff; /* monotonic clock */	116	static ev_tstamp now_floor, now, diff; /* monotonic clock */
36	ev_tstamp ev_now;	117	ev_tstamp ev_now;
37	int ev_method;	118	int ev_method;
38		119
39	static int have_monotonic; /* runtime */	120	static int have_monotonic; /* runtime */
40		121
…		…
45	/*****************************************************************************/	126	/*****************************************************************************/
46		127
47	ev_tstamp	128	ev_tstamp
48	ev_time (void)	129	ev_time (void)
49	{	130	{
50	#if HAVE_REALTIME	131	#if EV_USE_REALTIME
51	struct timespec ts;	132	struct timespec ts;
52	clock_gettime (CLOCK_REALTIME, &ts);	133	clock_gettime (CLOCK_REALTIME, &ts);
53	return ts.tv_sec + ts.tv_nsec * 1e-9;	134	return ts.tv_sec + ts.tv_nsec * 1e-9;
54	#else	135	#else
55	struct timeval tv;	136	struct timeval tv;
…		…
59	}	140	}
60		141
61	static ev_tstamp	142	static ev_tstamp
62	get_clock (void)	143	get_clock (void)
63	{	144	{
64	#if HAVE_MONOTONIC	145	#if EV_USE_MONOTONIC
65	if (have_monotonic)	146	if (expect_true (have_monotonic))
66	{	147	{
67	struct timespec ts;	148	struct timespec ts;
68	clock_gettime (CLOCK_MONOTONIC, &ts);	149	clock_gettime (CLOCK_MONOTONIC, &ts);
69	return ts.tv_sec + ts.tv_nsec * 1e-9;	150	return ts.tv_sec + ts.tv_nsec * 1e-9;
70	}	151	}
71	#endif	152	#endif
72		153
73	return ev_time ();	154	return ev_time ();
74	}	155	}
75		156
		157	#define array_roundsize(base,n) ((n) | 4 & ~3)
		158
76	#define array_needsize(base,cur,cnt,init) \	159	#define array_needsize(base,cur,cnt,init) \
77	if ((cnt) > cur) \	160	if (expect_false ((cnt) > cur)) \
78	{ \	161	{ \
79	int newcnt = cur ? cur << 1 : 16; \	162	int newcnt = cur; \
80	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	163	do \
		164	{ \
		165	newcnt = array_roundsize (base, newcnt << 1); \
		166	} \
		167	while ((cnt) > newcnt); \
		168	\
81	base = realloc (base, sizeof (*base) * (newcnt)); \	169	base = realloc (base, sizeof (*base) * (newcnt)); \
82	init (base + cur, newcnt - cur); \	170	init (base + cur, newcnt - cur); \
83	cur = newcnt; \	171	cur = newcnt; \
84	}	172	}
85		173
86	/*****************************************************************************/	174	/*****************************************************************************/
87		175
88	typedef struct	176	typedef struct
89	{	177	{
90	struct ev_io *head;	178	struct ev_io *head;
91	unsigned char wev, rev; /* want, received event set */	179	unsigned char events;
		180	unsigned char reify;
92	} ANFD;	181	} ANFD;
93		182
94	static ANFD *anfds;	183	static ANFD *anfds;
95	static int anfdmax;	184	static int anfdmax;
96		185
		186	static void
		187	anfds_init (ANFD *base, int count)
		188	{
		189	while (count--)
		190	{
		191	base->head = 0;
		192	base->events = EV_NONE;
		193	base->reify = 0;
		194
		195	++base;
		196	}
		197	}
		198
		199	typedef struct
		200	{
		201	W w;
		202	int events;
		203	} ANPENDING;
		204
		205	static ANPENDING *pendings [NUMPRI];
		206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
		207
		208	static void
		209	event (W w, int events)
		210	{
		211	if (w->pending)
		212	{
		213	pendings [ABSPRI (w)][w->pending - 1].events |= events;
		214	return;
		215	}
		216
		217	w->pending = ++pendingcnt [ABSPRI (w)];
		218	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
		219	pendings [ABSPRI (w)][w->pending - 1].w = w;
		220	pendings [ABSPRI (w)][w->pending - 1].events = events;
		221	}
		222
		223	static void
		224	queue_events (W *events, int eventcnt, int type)
		225	{
		226	int i;
		227
		228	for (i = 0; i < eventcnt; ++i)
		229	event (events [i], type);
		230	}
		231
		232	static void
		233	fd_event (int fd, int events)
		234	{
		235	ANFD *anfd = anfds + fd;
		236	struct ev_io *w;
		237
		238	for (w = anfd->head; w; w = w->next)
		239	{
		240	int ev = w->events & events;
		241
		242	if (ev)
		243	event ((W)w, ev);
		244	}
		245	}
		246
		247	/*****************************************************************************/
		248
97	static int *fdchanges;	249	static int *fdchanges;
98	static int fdchangemax, fdchangecnt;	250	static int fdchangemax, fdchangecnt;
99		251
100	static void	252	static void
101	anfds_init (ANFD *base, int count)	253	fd_reify (void)
102	{	254	{
103	while (count--)	255	int i;
104	{	256
105	base->head = 0;	257	for (i = 0; i < fdchangecnt; ++i)
106	base->wev = base->rev = EV_NONE;
107	++base;
108	}	258	{
109	}	259	int fd = fdchanges [i];
110
111	typedef struct
112	{
113	struct ev_watcher *w;
114	int events;
115	} ANPENDING;
116
117	static ANPENDING *pendings;
118	static int pendingmax, pendingcnt;
119
120	static void
121	event (struct ev_watcher *w, int events)
122	{
123	w->pending = ++pendingcnt;
124	array_needsize (pendings, pendingmax, pendingcnt, );
125	pendings [pendingcnt - 1].w = w;
126	pendings [pendingcnt - 1].events = events;
127	}
128
129	static void
130	fd_event (int fd, int events)
131	{
132	ANFD *anfd = anfds + fd;	260	ANFD *anfd = anfds + fd;
		261	struct ev_io *w;
		262
		263	int events = 0;
		264
		265	for (w = anfd->head; w; w = w->next)
		266	events |= w->events;
		267
		268	anfd->reify = 0;
		269
		270	if (anfd->events != events)
		271	{
		272	method_modify (fd, anfd->events, events);
		273	anfd->events = events;
		274	}
		275	}
		276
		277	fdchangecnt = 0;
		278	}
		279
		280	static void
		281	fd_change (int fd)
		282	{
		283	if (anfds [fd].reify || fdchangecnt < 0)
		284	return;
		285
		286	anfds [fd].reify = 1;
		287
		288	++fdchangecnt;
		289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		290	fdchanges [fdchangecnt - 1] = fd;
		291	}
		292
		293	static void
		294	fd_kill (int fd)
		295	{
133	struct ev_io *w;	296	struct ev_io *w;
134		297
135	for (w = anfd->head; w; w = w->next)	298	printf ("killing fd %d\n", fd);//D
		299	while ((w = anfds [fd].head))
		300	{
		301	ev_io_stop (w);
		302	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);
		303	}
		304	}
		305
		306	/* called on EBADF to verify fds */
		307	static void
		308	fd_ebadf (void)
		309	{
		310	int fd;
		311
		312	for (fd = 0; fd < anfdmax; ++fd)
		313	if (anfds [fd].events)
		314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		315	fd_kill (fd);
		316	}
		317
		318	/* called on ENOMEM in select/poll to kill some fds and retry */
		319	static void
		320	fd_enomem (void)
		321	{
		322	int fd = anfdmax;
		323
		324	while (fd--)
		325	if (anfds [fd].events)
136	{	326	{
137	int ev = w->events & events;	327	close (fd);
138		328	fd_kill (fd);
139	if (ev)	329	return;
140	event ((struct ev_watcher *)w, ev);
141	}	330	}
142	}	331	}
143		332
144	/*****************************************************************************/	333	/*****************************************************************************/
145		334
146	static struct ev_timer **atimers;	335	static struct ev_timer **timers;
147	static int atimermax, atimercnt;	336	static int timermax, timercnt;
148		337
149	static struct ev_timer **rtimers;	338	static struct ev_periodic **periodics;
150	static int rtimermax, rtimercnt;	339	static int periodicmax, periodiccnt;
151		340
152	static void	341	static void
153	upheap (struct ev_timer **timers, int k)	342	upheap (WT *timers, int k)
154	{	343	{
155	struct ev_timer *w = timers [k];	344	WT w = timers [k];
156		345
157	while (k && timers [k >> 1]->at > w->at)	346	while (k && timers [k >> 1]->at > w->at)
158	{	347	{
159	timers [k] = timers [k >> 1];	348	timers [k] = timers [k >> 1];
160	timers [k]->active = k + 1;	349	timers [k]->active = k + 1;
…		…
165	timers [k]->active = k + 1;	354	timers [k]->active = k + 1;
166		355
167	}	356	}
168		357
169	static void	358	static void
170	downheap (struct ev_timer **timers, int N, int k)	359	downheap (WT *timers, int N, int k)
171	{	360	{
172	struct ev_timer *w = timers [k];	361	WT w = timers [k];
173		362
174	while (k < (N >> 1))	363	while (k < (N >> 1))
175	{	364	{
176	int j = k << 1;	365	int j = k << 1;
177		366
…		…
193	/*****************************************************************************/	382	/*****************************************************************************/
194		383
195	typedef struct	384	typedef struct
196	{	385	{
197	struct ev_signal *head;	386	struct ev_signal *head;
198	sig_atomic_t gotsig;	387	sig_atomic_t volatile gotsig;
199	} ANSIG;	388	} ANSIG;
200		389
201	static ANSIG *signals;	390	static ANSIG *signals;
202	static int signalmax;	391	static int signalmax;
203		392
204	static int sigpipe [2];	393	static int sigpipe [2];
205	static sig_atomic_t gotsig;	394	static sig_atomic_t volatile gotsig;
206	static struct ev_io sigev;	395	static struct ev_io sigev;
207		396
208	static void	397	static void
209	signals_init (ANSIG *base, int count)	398	signals_init (ANSIG *base, int count)
210	{	399	{
211	while (count--)	400	while (count--)
212	{	401	{
213	base->head = 0;	402	base->head = 0;
214	base->gotsig = 0;	403	base->gotsig = 0;
		404
215	++base;	405	++base;
216	}	406	}
217	}	407	}
218		408
219	static void	409	static void
…		…
222	signals [signum - 1].gotsig = 1;	412	signals [signum - 1].gotsig = 1;
223		413
224	if (!gotsig)	414	if (!gotsig)
225	{	415	{
226	gotsig = 1;	416	gotsig = 1;
227	write (sigpipe [1], &gotsig, 1);	417	write (sigpipe [1], &signum, 1);
228	}	418	}
229	}	419	}
230		420
231	static void	421	static void
232	sigcb (struct ev_io *iow, int revents)	422	sigcb (struct ev_io *iow, int revents)
233	{	423	{
234	struct ev_signal *w;	424	struct ev_signal *w;
235	int sig;	425	int signum;
236		426
		427	read (sigpipe [0], &revents, 1);
237	gotsig = 0;	428	gotsig = 0;
238	read (sigpipe [0], &revents, 1);
239		429
240	for (sig = signalmax; sig--; )	430	for (signum = signalmax; signum--; )
241	if (signals [sig].gotsig)	431	if (signals [signum].gotsig)
242	{	432	{
243	signals [sig].gotsig = 0;	433	signals [signum].gotsig = 0;
244		434
245	for (w = signals [sig].head; w; w = w->next)	435	for (w = signals [signum].head; w; w = w->next)
246	event ((struct ev_watcher *)w, EV_SIGNAL);	436	event ((W)w, EV_SIGNAL);
247	}	437	}
248	}	438	}
249		439
250	static void	440	static void
251	siginit (void)	441	siginit (void)
…		…
255		445
256	/* rather than sort out wether we really need nb, set it */	446	/* rather than sort out wether we really need nb, set it */
257	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
258	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
259		449
260	evio_set (&sigev, sigpipe [0], EV_READ);	450	ev_io_set (&sigev, sigpipe [0], EV_READ);
261	evio_start (&sigev);	451	ev_io_start (&sigev);
262	}	452	}
263		453
264	/*****************************************************************************/	454	/*****************************************************************************/
265		455
		456	static struct ev_idle **idles;
		457	static int idlemax, idlecnt;
		458
		459	static struct ev_prepare **prepares;
		460	static int preparemax, preparecnt;
		461
		462	static struct ev_check **checks;
		463	static int checkmax, checkcnt;
		464
		465	/*****************************************************************************/
		466
		467	static struct ev_child *childs [PID_HASHSIZE];
		468	static struct ev_signal childev;
		469
		470	#ifndef WCONTINUED
		471	# define WCONTINUED 0
		472	#endif
		473
		474	static void
		475	childcb (struct ev_signal *sw, int revents)
		476	{
		477	struct ev_child *w;
		478	int pid, status;
		479
		480	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)
		481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)
		482	if (w->pid == pid || !w->pid)
		483	{
		484	w->status = status;
		485	event ((W)w, EV_CHILD);
		486	}
		487	}
		488
		489	/*****************************************************************************/
		490
		491	#if EV_USE_KQUEUE
		492	# include "ev_kqueue.c"
		493	#endif
266	#if HAVE_EPOLL	494	#if EV_USE_EPOLL
267	# include "ev_epoll.c"	495	# include "ev_epoll.c"
268	#endif	496	#endif
		497	#if EV_USE_POLL
		498	# include "ev_poll.c"
		499	#endif
269	#if HAVE_SELECT	500	#if EV_USE_SELECT
270	# include "ev_select.c"	501	# include "ev_select.c"
271	#endif	502	#endif
272		503
		504	int
		505	ev_version_major (void)
		506	{
		507	return EV_VERSION_MAJOR;
		508	}
		509
		510	int
		511	ev_version_minor (void)
		512	{
		513	return EV_VERSION_MINOR;
		514	}
		515
		516	/* return true if we are running with elevated privileges and ignore env variables */
		517	static int
		518	enable_secure ()
		519	{
		520	return getuid () != geteuid ()
		521	|| getgid () != getegid ();
		522	}
		523
273	int ev_init (int flags)	524	int ev_init (int methods)
274	{	525	{
275	#if HAVE_MONOTONIC
276	{
277	struct timespec ts;
278	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
279	have_monotonic = 1;
280	}
281	#endif
282
283	ev_now = ev_time ();
284	now = get_clock ();
285	diff = ev_now - now;
286
287	if (pipe (sigpipe))
288	return 0;
289
290	ev_method = EVMETHOD_NONE;
291	#if HAVE_EPOLL
292	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
293	#endif
294	#if HAVE_SELECT
295	if (ev_method == EVMETHOD_NONE) select_init (flags);
296	#endif
297
298	if (ev_method)	526	if (!ev_method)
		527	{
		528	#if EV_USE_MONOTONIC
299	{	529	{
		530	struct timespec ts;
		531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		532	have_monotonic = 1;
		533	}
		534	#endif
		535
		536	ev_now = ev_time ();
		537	now = get_clock ();
		538	now_floor = now;
		539	diff = ev_now - now;
		540
		541	if (pipe (sigpipe))
		542	return 0;
		543
		544	if (methods == EVMETHOD_AUTO)
		545	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		546	methods = atoi (getenv ("LIBEV_METHODS"));
		547	else
		548	methods = EVMETHOD_ANY;
		549
		550	ev_method = 0;
		551	#if EV_USE_KQUEUE
		552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);
		553	#endif
		554	#if EV_USE_EPOLL
		555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
		556	#endif
		557	#if EV_USE_POLL
		558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		559	#endif
		560	#if EV_USE_SELECT
		561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
		562	#endif
		563
		564	if (ev_method)
		565	{
300	evw_init (&sigev, sigcb, 0);	566	ev_watcher_init (&sigev, sigcb);
301	siginit ();	567	siginit ();
		568
		569	ev_signal_init (&childev, childcb, SIGCHLD);
		570	ev_signal_start (&childev);
		571	}
302	}	572	}
303		573
304	return ev_method;	574	return ev_method;
305	}	575	}
306		576
307	/*****************************************************************************/	577	/*****************************************************************************/
308		578
309	void ev_prefork (void)	579	void
		580	ev_fork_prepare (void)
310	{	581	{
		582	/* nop */
311	}	583	}
312		584
		585	void
313	void ev_postfork_parent (void)	586	ev_fork_parent (void)
314	{	587	{
		588	/* nop */
315	}	589	}
316		590
		591	void
317	void ev_postfork_child (void)	592	ev_fork_child (void)
318	{	593	{
319	#if HAVE_EPOLL	594	#if EV_USE_EPOLL
320	if (ev_method == EVMETHOD_EPOLL)	595	if (ev_method == EVMETHOD_EPOLL)
321	epoll_postfork_child ();	596	epoll_postfork_child ();
322	#endif	597	#endif
323		598
324	evio_stop (&sigev);	599	ev_io_stop (&sigev);
325	close (sigpipe [0]);	600	close (sigpipe [0]);
326	close (sigpipe [1]);	601	close (sigpipe [1]);
327	pipe (sigpipe);	602	pipe (sigpipe);
328	siginit ();	603	siginit ();
329	}	604	}
330		605
331	/*****************************************************************************/	606	/*****************************************************************************/
332		607
333	static ev_hook hooks [EVHOOK_NUM];
334
335	void
336	ev_hook_register (int type, ev_hook hook)
337	{
338	hooks [type] = hook;
339	}
340
341	void
342	ev_hook_unregister (int type, ev_hook hook)
343	{
344	hooks [type] = 0;
345	}
346
347	static void	608	static void
348	hook_call (int type)	609	call_pending (void)
349	{	610	{
350	if (hooks [type])
351	hooks [type] ();
352	}
353
354	static void
355	fd_reify (void)
356	{
357	int i;	611	int pri;
358		612
359	for (i = 0; i < fdchangecnt; ++i)	613	for (pri = NUMPRI; pri--; )
360	{	614	while (pendingcnt [pri])
361	int fd = fdchanges [i];
362	ANFD *anfd = anfds + fd;
363	struct ev_io *w;
364
365	int wev = 0;
366
367	for (w = anfd->head; w; w = w->next)
368	wev |= w->events;
369
370	if (anfd->wev != wev)
371	{	615	{
372	method_modify (fd, anfd->wev, wev);	616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
373	anfd->wev = wev;
374	}
375	}
376		617
377	fdchangecnt = 0;
378	}
379
380	static void
381	call_pending ()
382	{
383	int i;
384
385	for (i = 0; i < pendingcnt; ++i)
386	{
387	ANPENDING *p = pendings + i;
388
389	if (p->w)	618	if (p->w)
390	{	619	{
391	p->w->pending = 0;	620	p->w->pending = 0;
392	p->w->cb (p->w, p->events);	621	p->w->cb (p->w, p->events);
393	}	622	}
394	}	623	}
395
396	pendingcnt = 0;
397	}	624	}
398		625
399	static void	626	static void
400	timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now)	627	timers_reify (void)
401	{	628	{
402	while (timercnt && timers [0]->at <= now)	629	while (timercnt && timers [0]->at <= now)
403	{	630	{
404	struct ev_timer *w = timers [0];	631	struct ev_timer *w = timers [0];
405		632
406	/* first reschedule or stop timer */	633	/* first reschedule or stop timer */
407	if (w->repeat)	634	if (w->repeat)
408	{	635	{
409	if (w->is_abs)	636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
410	w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat;
411	else
412	w->at = now + w->repeat;	637	w->at = now + w->repeat;
413
414	assert (w->at > now);
415
416	downheap (timers, timercnt, 0);	638	downheap ((WT *)timers, timercnt, 0);
417	}	639	}
418	else	640	else
419	{
420	evtimer_stop (w); /* nonrepeating: stop timer */	641	ev_timer_stop (w); /* nonrepeating: stop timer */
421	--timercnt; /* maybe pass by reference instead? */	642
		643	event ((W)w, EV_TIMEOUT);
		644	}
		645	}
		646
		647	static void
		648	periodics_reify (void)
		649	{
		650	while (periodiccnt && periodics [0]->at <= ev_now)
		651	{
		652	struct ev_periodic *w = periodics [0];
		653
		654	/* first reschedule or stop timer */
		655	if (w->interval)
422	}	656	{
		657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
		658	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
		659	downheap ((WT *)periodics, periodiccnt, 0);
		660	}
		661	else
		662	ev_periodic_stop (w); /* nonrepeating: stop timer */
423		663
424	event ((struct ev_watcher *)w, EV_TIMEOUT);	664	event ((W)w, EV_PERIODIC);
425	}	665	}
426	}	666	}
427		667
428	static void	668	static void
429	time_update ()	669	periodics_reschedule (ev_tstamp diff)
430	{	670	{
431	int i;	671	int i;
432	ev_now = ev_time ();
433		672
434	if (have_monotonic)	673	/* adjust periodics after time jump */
		674	for (i = 0; i < periodiccnt; ++i)
435	{	675	{
436	ev_tstamp odiff = diff;	676	struct ev_periodic *w = periodics [i];
437		677
438	/* detecting time jumps is much more difficult */	678	if (w->interval)
439	for (i = 2; --i; ) /* loop a few times, before making important decisions */
440	{
441	now = get_clock ();
442	diff = ev_now - now;
443
444	if (fabs (odiff - diff) < MIN_TIMEJUMP)
445	return; /* all is well */
446
447	ev_now = ev_time ();
448	}	679	{
		680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
449		681
450	/* time jump detected, reschedule atimers */	682	if (fabs (diff) >= 1e-4)
451	for (i = 0; i < atimercnt; ++i)	683	{
		684	ev_periodic_stop (w);
		685	ev_periodic_start (w);
		686
		687	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		688	}
452	{	689	}
453	struct ev_timer *w = atimers [i];	690	}
454	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;	691	}
455	}	692
		693	static int
		694	time_update_monotonic (void)
		695	{
		696	now = get_clock ();
		697
		698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		699	{
		700	ev_now = now + diff;
		701	return 0;
456	}	702	}
457	else	703	else
458	{	704	{
		705	now_floor = now;
		706	ev_now = ev_time ();
		707	return 1;
		708	}
		709	}
		710
		711	static void
		712	time_update (void)
		713	{
		714	int i;
		715
		716	#if EV_USE_MONOTONIC
		717	if (expect_true (have_monotonic))
		718	{
		719	if (time_update_monotonic ())
		720	{
		721	ev_tstamp odiff = diff;
		722
		723	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		724	{
		725	diff = ev_now - now;
		726
		727	if (fabs (odiff - diff) < MIN_TIMEJUMP)
		728	return; /* all is well */
		729
		730	ev_now = ev_time ();
		731	now = get_clock ();
		732	now_floor = now;
		733	}
		734
		735	periodics_reschedule (diff - odiff);
		736	/* no timer adjustment, as the monotonic clock doesn't jump */
		737	}
		738	}
		739	else
		740	#endif
		741	{
		742	ev_now = ev_time ();
		743
459	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	744	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
460	/* time jump detected, adjust rtimers */	745	{
		746	periodics_reschedule (ev_now - now);
		747
		748	/* adjust timers. this is easy, as the offset is the same for all */
461	for (i = 0; i < rtimercnt; ++i)	749	for (i = 0; i < timercnt; ++i)
462	rtimers [i]->at += ev_now - now;	750	timers [i]->at += diff;
		751	}
463		752
464	now = ev_now;	753	now = ev_now;
465	}	754	}
466	}	755	}
467		756
468	int ev_loop_done;	757	int ev_loop_done;
469		758
470	void ev_loop (int flags)	759	void ev_loop (int flags)
471	{	760	{
472	double block;	761	double block;
473	ev_loop_done = flags & EVLOOP_ONESHOT;	762	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
474		763
475	do	764	do
476	{	765	{
477	hook_call (EVHOOK_PREPOLL);	766	/* queue check watchers (and execute them) */
		767	if (expect_false (preparecnt))
		768	{
		769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		770	call_pending ();
		771	}
478		772
479	/* update fd-related kernel structures */	773	/* update fd-related kernel structures */
480	fd_reify ();	774	fd_reify ();
481		775
482	/* calculate blocking time */	776	/* calculate blocking time */
		777
		778	/* we only need this for !monotonic clockor timers, but as we basically
		779	always have timers, we just calculate it always */
		780	#if EV_USE_MONOTONIC
		781	if (expect_true (have_monotonic))
		782	time_update_monotonic ();
		783	else
		784	#endif
		785	{
		786	ev_now = ev_time ();
		787	now = ev_now;
		788	}
		789
483	if (flags & EVLOOP_NONBLOCK)	790	if (flags & EVLOOP_NONBLOCK || idlecnt)
484	block = 0.;	791	block = 0.;
485	else	792	else
486	{	793	{
487	block = MAX_BLOCKTIME;	794	block = MAX_BLOCKTIME;
488		795
489	if (rtimercnt)	796	if (timercnt)
490	{	797	{
491	ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge;	798	ev_tstamp to = timers [0]->at - now + method_fudge;
492	if (block > to) block = to;	799	if (block > to) block = to;
493	}	800	}
494		801
495	if (atimercnt)	802	if (periodiccnt)
496	{	803	{
497	ev_tstamp to = atimers [0]->at - ev_time () + method_fudge;	804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;
498	if (block > to) block = to;	805	if (block > to) block = to;
499	}	806	}
500		807
501	if (block < 0.) block = 0.;	808	if (block < 0.) block = 0.;
502	}	809	}
…		…
504	method_poll (block);	811	method_poll (block);
505		812
506	/* update ev_now, do magic */	813	/* update ev_now, do magic */
507	time_update ();	814	time_update ();
508		815
509	hook_call (EVHOOK_POSTPOLL);
510
511	/* put pending timers into pendign queue and reschedule them */	816	/* queue pending timers and reschedule them */
512	/* absolute timers first */	817	timers_reify (); /* relative timers called last */
513	timers_reify (atimers, atimercnt, ev_now);	818	periodics_reify (); /* absolute timers called first */
514	/* relative timers second */	819
515	timers_reify (rtimers, rtimercnt, now);	820	/* queue idle watchers unless io or timers are pending */
		821	if (!pendingcnt)
		822	queue_events ((W *)idles, idlecnt, EV_IDLE);
		823
		824	/* queue check watchers, to be executed first */
		825	if (checkcnt)
		826	queue_events ((W *)checks, checkcnt, EV_CHECK);
516		827
517	call_pending ();	828	call_pending ();
518	}	829	}
519	while (!ev_loop_done);	830	while (!ev_loop_done);
520	}
521		831
522	/*****************************************************************************/	832	if (ev_loop_done != 2)
		833	ev_loop_done = 0;
		834	}
523		835
		836	/*****************************************************************************/
		837
524	static void	838	static void
525	wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem)	839	wlist_add (WL *head, WL elem)
526	{	840	{
527	elem->next = *head;	841	elem->next = *head;
528	*head = elem;	842	*head = elem;
529	}	843	}
530		844
531	static void	845	static void
532	wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem)	846	wlist_del (WL *head, WL elem)
533	{	847	{
534	while (*head)	848	while (*head)
535	{	849	{
536	if (*head == elem)	850	if (*head == elem)
537	{	851	{
…		…
542	head = &(*head)->next;	856	head = &(*head)->next;
543	}	857	}
544	}	858	}
545		859
546	static void	860	static void
547	ev_start (struct ev_watcher *w, int active)	861	ev_clear_pending (W w)
548	{	862	{
		863	if (w->pending)
		864	{
		865	pendings [ABSPRI (w)][w->pending - 1].w = 0;
549	w->pending = 0;	866	w->pending = 0;
		867	}
		868	}
		869
		870	static void
		871	ev_start (W w, int active)
		872	{
		873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		875
550	w->active = active;	876	w->active = active;
551	}	877	}
552		878
553	static void	879	static void
554	ev_stop (struct ev_watcher *w)	880	ev_stop (W w)
555	{	881	{
556	if (w->pending)
557	pendings [w->pending - 1].w = 0;
558
559	w->active = 0;	882	w->active = 0;
560	/* nop */
561	}	883	}
562		884
563	/*****************************************************************************/	885	/*****************************************************************************/
564		886
565	void	887	void
566	evio_start (struct ev_io *w)	888	ev_io_start (struct ev_io *w)
567	{	889	{
		890	int fd = w->fd;
		891
568	if (ev_is_active (w))	892	if (ev_is_active (w))
569	return;	893	return;
570		894
571	int fd = w->fd;	895	assert (("ev_io_start called with negative fd", fd >= 0));
572		896
573	ev_start ((struct ev_watcher *)w, 1);	897	ev_start ((W)w, 1);
574	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
575	wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w);	899	wlist_add ((WL *)&anfds[fd].head, (WL)w);
576		900
577	++fdchangecnt;	901	fd_change (fd);
578	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
579	fdchanges [fdchangecnt - 1] = fd;
580	}	902	}
581		903
582	void	904	void
583	evio_stop (struct ev_io *w)	905	ev_io_stop (struct ev_io *w)
584	{	906	{
		907	ev_clear_pending ((W)w);
585	if (!ev_is_active (w))	908	if (!ev_is_active (w))
586	return;	909	return;
587		910
588	wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w);	911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
589	ev_stop ((struct ev_watcher *)w);	912	ev_stop ((W)w);
590		913
591	++fdchangecnt;	914	fd_change (w->fd);
592	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
593	fdchanges [fdchangecnt - 1] = w->fd;
594	}	915	}
595		916
596	void	917	void
597	evtimer_start (struct ev_timer *w)	918	ev_timer_start (struct ev_timer *w)
598	{	919	{
599	if (ev_is_active (w))	920	if (ev_is_active (w))
600	return;	921	return;
601		922
602	if (w->is_abs)	923	w->at += now;
		924
		925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		926
		927	ev_start ((W)w, ++timercnt);
		928	array_needsize (timers, timermax, timercnt, );
		929	timers [timercnt - 1] = w;
		930	upheap ((WT *)timers, timercnt - 1);
		931	}
		932
		933	void
		934	ev_timer_stop (struct ev_timer *w)
		935	{
		936	ev_clear_pending ((W)w);
		937	if (!ev_is_active (w))
		938	return;
		939
		940	if (w->active < timercnt--)
		941	{
		942	timers [w->active - 1] = timers [timercnt];
		943	downheap ((WT *)timers, timercnt, w->active - 1);
603	{	944	}
604	/* this formula differs from the one in timer_reify becuse we do not round up */	945
		946	w->at = w->repeat;
		947
		948	ev_stop ((W)w);
		949	}
		950
		951	void
		952	ev_timer_again (struct ev_timer *w)
		953	{
		954	if (ev_is_active (w))
		955	{
605	if (w->repeat)	956	if (w->repeat)
		957	{
		958	w->at = now + w->repeat;
		959	downheap ((WT *)timers, timercnt, w->active - 1);
		960	}
		961	else
		962	ev_timer_stop (w);
		963	}
		964	else if (w->repeat)
		965	ev_timer_start (w);
		966	}
		967
		968	void
		969	ev_periodic_start (struct ev_periodic *w)
		970	{
		971	if (ev_is_active (w))
		972	return;
		973
		974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		975
		976	/* this formula differs from the one in periodic_reify because we do not always round up */
		977	if (w->interval)
606	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;	978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
607		979
608	ev_start ((struct ev_watcher *)w, ++atimercnt);	980	ev_start ((W)w, ++periodiccnt);
609	array_needsize (atimers, atimermax, atimercnt, );	981	array_needsize (periodics, periodicmax, periodiccnt, );
610	atimers [atimercnt - 1] = w;	982	periodics [periodiccnt - 1] = w;
611	upheap (atimers, atimercnt - 1);	983	upheap ((WT *)periodics, periodiccnt - 1);
612	}
613	else
614	{
615	w->at += now;
616
617	ev_start ((struct ev_watcher *)w, ++rtimercnt);
618	array_needsize (rtimers, rtimermax, rtimercnt, );
619	rtimers [rtimercnt - 1] = w;
620	upheap (rtimers, rtimercnt - 1);
621	}
622
623	}	984	}
624		985
625	void	986	void
626	evtimer_stop (struct ev_timer *w)	987	ev_periodic_stop (struct ev_periodic *w)
627	{	988	{
		989	ev_clear_pending ((W)w);
628	if (!ev_is_active (w))	990	if (!ev_is_active (w))
629	return;	991	return;
630		992
631	if (w->is_abs)
632	{
633	if (w->active < atimercnt--)	993	if (w->active < periodiccnt--)
634	{
635	atimers [w->active - 1] = atimers [atimercnt];
636	downheap (atimers, atimercnt, w->active - 1);
637	}
638	}	994	{
639	else	995	periodics [w->active - 1] = periodics [periodiccnt];
		996	downheap ((WT *)periodics, periodiccnt, w->active - 1);
640	{	997	}
641	if (w->active < rtimercnt--)
642	{
643	rtimers [w->active - 1] = rtimers [rtimercnt];
644	downheap (rtimers, rtimercnt, w->active - 1);
645	}
646	}
647		998
648	ev_stop ((struct ev_watcher *)w);	999	ev_stop ((W)w);
649	}	1000	}
650		1001
651	void	1002	void
652	evsignal_start (struct ev_signal *w)	1003	ev_signal_start (struct ev_signal *w)
653	{	1004	{
654	if (ev_is_active (w))	1005	if (ev_is_active (w))
655	return;	1006	return;
656		1007
657	ev_start ((struct ev_watcher *)w, 1);	1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1009
		1010	ev_start ((W)w, 1);
658	array_needsize (signals, signalmax, w->signum, signals_init);	1011	array_needsize (signals, signalmax, w->signum, signals_init);
659	wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w);	1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
660		1013
661	if (!w->next)	1014	if (!w->next)
662	{	1015	{
663	struct sigaction sa;	1016	struct sigaction sa;
664	sa.sa_handler = sighandler;	1017	sa.sa_handler = sighandler;
…		…
667	sigaction (w->signum, &sa, 0);	1020	sigaction (w->signum, &sa, 0);
668	}	1021	}
669	}	1022	}
670		1023
671	void	1024	void
672	evsignal_stop (struct ev_signal *w)	1025	ev_signal_stop (struct ev_signal *w)
673	{	1026	{
		1027	ev_clear_pending ((W)w);
674	if (!ev_is_active (w))	1028	if (!ev_is_active (w))
675	return;	1029	return;
676		1030
677	wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w);	1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
678	ev_stop ((struct ev_watcher *)w);	1032	ev_stop ((W)w);
679		1033
680	if (!signals [w->signum - 1].head)	1034	if (!signals [w->signum - 1].head)
681	signal (w->signum, SIG_DFL);	1035	signal (w->signum, SIG_DFL);
682	}	1036	}
683		1037
		1038	void
		1039	ev_idle_start (struct ev_idle *w)
		1040	{
		1041	if (ev_is_active (w))
		1042	return;
		1043
		1044	ev_start ((W)w, ++idlecnt);
		1045	array_needsize (idles, idlemax, idlecnt, );
		1046	idles [idlecnt - 1] = w;
		1047	}
		1048
		1049	void
		1050	ev_idle_stop (struct ev_idle *w)
		1051	{
		1052	ev_clear_pending ((W)w);
		1053	if (ev_is_active (w))
		1054	return;
		1055
		1056	idles [w->active - 1] = idles [--idlecnt];
		1057	ev_stop ((W)w);
		1058	}
		1059
		1060	void
		1061	ev_prepare_start (struct ev_prepare *w)
		1062	{
		1063	if (ev_is_active (w))
		1064	return;
		1065
		1066	ev_start ((W)w, ++preparecnt);
		1067	array_needsize (prepares, preparemax, preparecnt, );
		1068	prepares [preparecnt - 1] = w;
		1069	}
		1070
		1071	void
		1072	ev_prepare_stop (struct ev_prepare *w)
		1073	{
		1074	ev_clear_pending ((W)w);
		1075	if (ev_is_active (w))
		1076	return;
		1077
		1078	prepares [w->active - 1] = prepares [--preparecnt];
		1079	ev_stop ((W)w);
		1080	}
		1081
		1082	void
		1083	ev_check_start (struct ev_check *w)
		1084	{
		1085	if (ev_is_active (w))
		1086	return;
		1087
		1088	ev_start ((W)w, ++checkcnt);
		1089	array_needsize (checks, checkmax, checkcnt, );
		1090	checks [checkcnt - 1] = w;
		1091	}
		1092
		1093	void
		1094	ev_check_stop (struct ev_check *w)
		1095	{
		1096	ev_clear_pending ((W)w);
		1097	if (ev_is_active (w))
		1098	return;
		1099
		1100	checks [w->active - 1] = checks [--checkcnt];
		1101	ev_stop ((W)w);
		1102	}
		1103
		1104	void
		1105	ev_child_start (struct ev_child *w)
		1106	{
		1107	if (ev_is_active (w))
		1108	return;
		1109
		1110	ev_start ((W)w, 1);
		1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1112	}
		1113
		1114	void
		1115	ev_child_stop (struct ev_child *w)
		1116	{
		1117	ev_clear_pending ((W)w);
		1118	if (ev_is_active (w))
		1119	return;
		1120
		1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1122	ev_stop ((W)w);
		1123	}
		1124
684	/*****************************************************************************/	1125	/*****************************************************************************/
		1126
		1127	struct ev_once
		1128	{
		1129	struct ev_io io;
		1130	struct ev_timer to;
		1131	void (*cb)(int revents, void *arg);
		1132	void *arg;
		1133	};
		1134
		1135	static void
		1136	once_cb (struct ev_once *once, int revents)
		1137	{
		1138	void (*cb)(int revents, void *arg) = once->cb;
		1139	void *arg = once->arg;
		1140
		1141	ev_io_stop (&once->io);
		1142	ev_timer_stop (&once->to);
		1143	free (once);
		1144
		1145	cb (revents, arg);
		1146	}
		1147
		1148	static void
		1149	once_cb_io (struct ev_io *w, int revents)
		1150	{
		1151	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
		1152	}
		1153
		1154	static void
		1155	once_cb_to (struct ev_timer *w, int revents)
		1156	{
		1157	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
		1158	}
		1159
		1160	void
		1161	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
		1162	{
		1163	struct ev_once *once = malloc (sizeof (struct ev_once));
		1164
		1165	if (!once)
		1166	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
		1167	else
		1168	{
		1169	once->cb = cb;
		1170	once->arg = arg;
		1171
		1172	ev_watcher_init (&once->io, once_cb_io);
		1173	if (fd >= 0)
		1174	{
		1175	ev_io_set (&once->io, fd, events);
		1176	ev_io_start (&once->io);
		1177	}
		1178
		1179	ev_watcher_init (&once->to, once_cb_to);
		1180	if (timeout >= 0.)
		1181	{
		1182	ev_timer_set (&once->to, timeout, 0.);
		1183	ev_timer_start (&once->to);
		1184	}
		1185	}
		1186	}
		1187
		1188	/*****************************************************************************/
		1189
685	#if 1	1190	#if 0
		1191
		1192	struct ev_io wio;
686		1193
687	static void	1194	static void
688	sin_cb (struct ev_io *w, int revents)	1195	sin_cb (struct ev_io *w, int revents)
689	{	1196	{
690	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
…		…
692		1199
693	static void	1200	static void
694	ocb (struct ev_timer *w, int revents)	1201	ocb (struct ev_timer *w, int revents)
695	{	1202	{
696	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
697	evtimer_stop (w);	1204	ev_timer_stop (w);
698	evtimer_start (w);	1205	ev_timer_start (w);
699	}	1206	}
700		1207
701	static void	1208	static void
702	scb (struct ev_signal *w, int revents)	1209	scb (struct ev_signal *w, int revents)
703	{	1210	{
704	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1212	ev_io_stop (&wio);
		1213	ev_io_start (&wio);
		1214	}
		1215
		1216	static void
		1217	gcb (struct ev_signal *w, int revents)
		1218	{
		1219	fprintf (stderr, "generic %x\n", revents);
		1220
705	}	1221	}
706		1222
707	int main (void)	1223	int main (void)
708	{	1224	{
709	struct ev_io sin;
710
711	ev_init (0);	1225	ev_init (0);
712		1226
713	evw_init (&sin, sin_cb, 55);
714	evio_set (&sin, 0, EV_READ);	1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
715	evio_start (&sin);	1228	ev_io_start (&wio);
716		1229
717	struct ev_timer t[10000];	1230	struct ev_timer t[10000];
718		1231
719	#if 1	1232	#if 0
720	int i;	1233	int i;
721	for (i = 0; i < 10000; ++i)	1234	for (i = 0; i < 10000; ++i)
722	{	1235	{
723	struct ev_timer *w = t + i;	1236	struct ev_timer *w = t + i;
724	evw_init (w, ocb, i);	1237	ev_watcher_init (w, ocb, i);
725	evtimer_set_abs (w, drand48 (), 0.99775533);	1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
726	evtimer_start (w);	1239	ev_timer_start (w);
727	if (drand48 () < 0.5)	1240	if (drand48 () < 0.5)
728	evtimer_stop (w);	1241	ev_timer_stop (w);
729	}	1242	}
730	#endif	1243	#endif
731		1244
732	struct ev_timer t1;	1245	struct ev_timer t1;
733	evw_init (&t1, ocb, 0);	1246	ev_timer_init (&t1, ocb, 5, 10);
734	evtimer_set_abs (&t1, 5, 10);
735	evtimer_start (&t1);	1247	ev_timer_start (&t1);
736		1248
737	struct ev_signal sig;	1249	struct ev_signal sig;
738	evw_init (&sig, scb, 65535);
739	evsignal_set (&sig, SIGQUIT);	1250	ev_signal_init (&sig, scb, SIGQUIT);
740	evsignal_start (&sig);	1251	ev_signal_start (&sig);
		1252
		1253	struct ev_check cw;
		1254	ev_check_init (&cw, gcb);
		1255	ev_check_start (&cw);
		1256
		1257	struct ev_idle iw;
		1258	ev_idle_init (&iw, gcb);
		1259	ev_idle_start (&iw);
741		1260
742	ev_loop (0);	1261	ev_loop (0);
743		1262
744	return 0;	1263	return 0;
745	}	1264	}

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