[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.9 by root, Wed Oct 31 07:24:17 2007 UTC vs.
Revision 1.41 by root, Fri Nov 2 16:54:34 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_REALTIME
		70	# define EV_USE_REALTIME 1
		71	#endif
		72
		73	/**/
		74
14	#ifdef CLOCK_MONOTONIC	75	#ifndef CLOCK_MONOTONIC
		76	# undef EV_USE_MONOTONIC
15	# define HAVE_MONOTONIC 1	77	# define EV_USE_MONOTONIC 0
16	#endif	78	#endif
17		79
		80	#ifndef CLOCK_REALTIME
		81	# undef EV_USE_REALTIME
18	#define HAVE_REALTIME 1	82	# define EV_USE_REALTIME 0
19	#define HAVE_EPOLL 1	83	#endif
20	#define HAVE_SELECT 1	84
		85	/**/
21		86
22	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	87	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
23	#define MAX_BLOCKTIME 60.	88	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		89	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		90	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
24		91
25	#include "ev.h"	92	#include "ev.h"
26		93
		94	#if __GNUC__ >= 3
		95	# define expect(expr,value) __builtin_expect ((expr),(value))
		96	# define inline inline
		97	#else
		98	# define expect(expr,value) (expr)
		99	# define inline static
		100	#endif
		101
		102	#define expect_false(expr) expect ((expr) != 0, 0)
		103	#define expect_true(expr) expect ((expr) != 0, 1)
		104
27	struct ev_watcher {	105	typedef struct ev_watcher *W;
28	EV_WATCHER (ev_watcher);
29	};
30
31	struct ev_watcher_list {	106	typedef struct ev_watcher_list *WL;
32	EV_WATCHER_LIST (ev_watcher_list);	107	typedef struct ev_watcher_time *WT;
33	};
34		108
35	static ev_tstamp now, diff; /* monotonic clock */	109	static ev_tstamp now_floor, now, diff; /* monotonic clock */
36	ev_tstamp ev_now;	110	ev_tstamp ev_now;
37	int ev_method;	111	int ev_method;
38		112
39	static int have_monotonic; /* runtime */	113	static int have_monotonic; /* runtime */
40		114
45	/*****************************************************************************/	119	/*****************************************************************************/
46		120
47	ev_tstamp	121	ev_tstamp
48	ev_time (void)	122	ev_time (void)
49	{	123	{
50	#if HAVE_REALTIME	124	#if EV_USE_REALTIME
51	struct timespec ts;	125	struct timespec ts;
52	clock_gettime (CLOCK_REALTIME, &ts);	126	clock_gettime (CLOCK_REALTIME, &ts);
53	return ts.tv_sec + ts.tv_nsec * 1e-9;	127	return ts.tv_sec + ts.tv_nsec * 1e-9;
54	#else	128	#else
55	struct timeval tv;	129	struct timeval tv;
…		…
59	}	133	}
60		134
61	static ev_tstamp	135	static ev_tstamp
62	get_clock (void)	136	get_clock (void)
63	{	137	{
64	#if HAVE_MONOTONIC	138	#if EV_USE_MONOTONIC
65	if (have_monotonic)	139	if (expect_true (have_monotonic))
66	{	140	{
67	struct timespec ts;	141	struct timespec ts;
68	clock_gettime (CLOCK_MONOTONIC, &ts);	142	clock_gettime (CLOCK_MONOTONIC, &ts);
69	return ts.tv_sec + ts.tv_nsec * 1e-9;	143	return ts.tv_sec + ts.tv_nsec * 1e-9;
70	}	144	}
71	#endif	145	#endif
72		146
73	return ev_time ();	147	return ev_time ();
74	}	148	}
75		149
		150	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		151
76	#define array_needsize(base,cur,cnt,init) \	152	#define array_needsize(base,cur,cnt,init) \
77	if ((cnt) > cur) \	153	if (expect_false ((cnt) > cur)) \
78	{ \	154	{ \
79	int newcnt = cur ? cur << 1 : 16; \	155	int newcnt = cur; \
80	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	156	do \
		157	{ \
		158	newcnt = array_roundsize (base, newcnt << 1); \
		159	} \
		160	while ((cnt) > newcnt); \
		161	\
81	base = realloc (base, sizeof (base) (newcnt)); \	162	base = realloc (base, sizeof (base) (newcnt)); \
82	init (base + cur, newcnt - cur); \	163	init (base + cur, newcnt - cur); \
83	cur = newcnt; \	164	cur = newcnt; \
84	}	165	}
85		166
86	/*****************************************************************************/	167	/*****************************************************************************/
87		168
88	typedef struct	169	typedef struct
89	{	170	{
90	struct ev_io *head;	171	struct ev_io *head;
91	unsigned char wev, rev; /* want, received event set */	172	unsigned char events;
		173	unsigned char reify;
92	} ANFD;	174	} ANFD;
93		175
94	static ANFD *anfds;	176	static ANFD *anfds;
95	static int anfdmax;	177	static int anfdmax;
96		178
97	static int *fdchanges;
98	static int fdchangemax, fdchangecnt;
99
100	static void	179	static void
101	anfds_init (ANFD *base, int count)	180	anfds_init (ANFD *base, int count)
102	{	181	{
103	while (count--)	182	while (count--)
104	{	183	{
105	base->head = 0;	184	base->head = 0;
106	base->wev = base->rev = EV_NONE;	185	base->events = EV_NONE;
		186	base->reify = 0;
		187
107	++base;	188	++base;
108	}	189	}
109	}	190	}
110		191
111	typedef struct	192	typedef struct
112	{	193	{
113	struct ev_watcher *w;	194	W w;
114	int events;	195	int events;
115	} ANPENDING;	196	} ANPENDING;
116		197
117	static ANPENDING *pendings;	198	static ANPENDING *pendings;
118	static int pendingmax, pendingcnt;	199	static int pendingmax, pendingcnt;
119		200
120	static void	201	static void
121	event (struct ev_watcher *w, int events)	202	event (W w, int events)
122	{	203	{
		204	if (w->pending)
		205	{
		206	pendings [w->pending - 1].events \|= events;
		207	return;
		208	}
		209
123	w->pending = ++pendingcnt;	210	w->pending = ++pendingcnt;
124	array_needsize (pendings, pendingmax, pendingcnt, );	211	array_needsize (pendings, pendingmax, pendingcnt, );
125	pendings [pendingcnt - 1].w = w;	212	pendings [pendingcnt - 1].w = w;
126	pendings [pendingcnt - 1].events = events;	213	pendings [pendingcnt - 1].events = events;
127	}	214	}
128		215
129	static void	216	static void
		217	queue_events (W *events, int eventcnt, int type)
		218	{
		219	int i;
		220
		221	for (i = 0; i < eventcnt; ++i)
		222	event (events [i], type);
		223	}
		224
		225	static void
130	fd_event (int fd, int events)	226	fd_event (int fd, int events)
131	{	227	{
132	ANFD *anfd = anfds + fd;	228	ANFD *anfd = anfds + fd;
133	struct ev_io *w;	229	struct ev_io *w;
134		230
135	for (w = anfd->head; w; w = w->next)	231	for (w = anfd->head; w; w = w->next)
136	{	232	{
137	int ev = w->events & events;	233	int ev = w->events & events;
138		234
139	if (ev)	235	if (ev)
140	event ((struct ev_watcher *)w, ev);	236	event ((W)w, ev);
141	}	237	}
142	}	238	}
143		239
		240	/*****************************************************************************/
		241
		242	static int *fdchanges;
		243	static int fdchangemax, fdchangecnt;
		244
144	static void	245	static void
145	queue_events (struct ev_watcher **events, int eventcnt, int type)	246	fd_reify (void)
146	{	247	{
147	int i;	248	int i;
148		249
149	for (i = 0; i < eventcnt; ++i)	250	for (i = 0; i < fdchangecnt; ++i)
150	event (events [i], type);	251	{
151	}	252	int fd = fdchanges [i];
		253	ANFD *anfd = anfds + fd;
		254	struct ev_io *w;
152		255
153	/*****************************************************************************/	256	int events = 0;
154		257
		258	for (w = anfd->head; w; w = w->next)
		259	events \|= w->events;
		260
		261	anfd->reify = 0;
		262
		263	if (anfd->events != events)
		264	{
		265	method_modify (fd, anfd->events, events);
		266	anfd->events = events;
		267	}
		268	}
		269
		270	fdchangecnt = 0;
		271	}
		272
		273	static void
		274	fd_change (int fd)
		275	{
		276	if (anfds [fd].reify \|\| fdchangecnt < 0)
		277	return;
		278
		279	anfds [fd].reify = 1;
		280
		281	++fdchangecnt;
		282	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		283	fdchanges [fdchangecnt - 1] = fd;
		284	}
		285
		286	static void
		287	fd_kill (int fd)
		288	{
		289	struct ev_io *w;
		290
		291	printf ("killing fd %d\n", fd);//D
		292	while ((w = anfds [fd].head))
		293	{
		294	ev_io_stop (w);
		295	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		296	}
		297	}
		298
		299	/* called on EBADF to verify fds */
		300	static void
		301	fd_ebadf (void)
		302	{
		303	int fd;
		304
		305	for (fd = 0; fd < anfdmax; ++fd)
		306	if (anfds [fd].events)
		307	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		308	fd_kill (fd);
		309	}
		310
		311	/* called on ENOMEM in select/poll to kill some fds and retry */
		312	static void
		313	fd_enomem (void)
		314	{
		315	int fd = anfdmax;
		316
		317	while (fd--)
		318	if (anfds [fd].events)
		319	{
		320	close (fd);
		321	fd_kill (fd);
		322	return;
		323	}
		324	}
		325
		326	/*****************************************************************************/
		327
155	static struct ev_timer **atimers;	328	static struct ev_timer **timers;
156	static int atimermax, atimercnt;	329	static int timermax, timercnt;
157		330
158	static struct ev_timer **rtimers;	331	static struct ev_periodic **periodics;
159	static int rtimermax, rtimercnt;	332	static int periodicmax, periodiccnt;
160		333
161	static void	334	static void
162	upheap (struct ev_timer **timers, int k)	335	upheap (WT *timers, int k)
163	{	336	{
164	struct ev_timer *w = timers [k];	337	WT w = timers [k];
165		338
166	while (k && timers [k >> 1]->at > w->at)	339	while (k && timers [k >> 1]->at > w->at)
167	{	340	{
168	timers [k] = timers [k >> 1];	341	timers [k] = timers [k >> 1];
169	timers [k]->active = k + 1;	342	timers [k]->active = k + 1;
…		…
174	timers [k]->active = k + 1;	347	timers [k]->active = k + 1;
175		348
176	}	349	}
177		350
178	static void	351	static void
179	downheap (struct ev_timer **timers, int N, int k)	352	downheap (WT *timers, int N, int k)
180	{	353	{
181	struct ev_timer *w = timers [k];	354	WT w = timers [k];
182		355
183	while (k < (N >> 1))	356	while (k < (N >> 1))
184	{	357	{
185	int j = k << 1;	358	int j = k << 1;
186		359
…		…
202	/*****************************************************************************/	375	/*****************************************************************************/
203		376
204	typedef struct	377	typedef struct
205	{	378	{
206	struct ev_signal *head;	379	struct ev_signal *head;
207	sig_atomic_t gotsig;	380	sig_atomic_t volatile gotsig;
208	} ANSIG;	381	} ANSIG;
209		382
210	static ANSIG *signals;	383	static ANSIG *signals;
211	static int signalmax;	384	static int signalmax;
212		385
213	static int sigpipe [2];	386	static int sigpipe [2];
214	static sig_atomic_t gotsig;	387	static sig_atomic_t volatile gotsig;
215	static struct ev_io sigev;	388	static struct ev_io sigev;
216		389
217	static void	390	static void
218	signals_init (ANSIG *base, int count)	391	signals_init (ANSIG *base, int count)
219	{	392	{
220	while (count--)	393	while (count--)
221	{	394	{
222	base->head = 0;	395	base->head = 0;
223	base->gotsig = 0;	396	base->gotsig = 0;
		397
224	++base;	398	++base;
225	}	399	}
226	}	400	}
227		401
228	static void	402	static void
…		…
231	signals [signum - 1].gotsig = 1;	405	signals [signum - 1].gotsig = 1;
232		406
233	if (!gotsig)	407	if (!gotsig)
234	{	408	{
235	gotsig = 1;	409	gotsig = 1;
236	write (sigpipe [1], &gotsig, 1);	410	write (sigpipe [1], &signum, 1);
237	}	411	}
238	}	412	}
239		413
240	static void	414	static void
241	sigcb (struct ev_io *iow, int revents)	415	sigcb (struct ev_io *iow, int revents)
242	{	416	{
243	struct ev_signal *w;	417	struct ev_signal *w;
244	int sig;	418	int signum;
245		419
		420	read (sigpipe [0], &revents, 1);
246	gotsig = 0;	421	gotsig = 0;
247	read (sigpipe [0], &revents, 1);
248		422
249	for (sig = signalmax; sig--; )	423	for (signum = signalmax; signum--; )
250	if (signals [sig].gotsig)	424	if (signals [signum].gotsig)
251	{	425	{
252	signals [sig].gotsig = 0;	426	signals [signum].gotsig = 0;
253		427
254	for (w = signals [sig].head; w; w = w->next)	428	for (w = signals [signum].head; w; w = w->next)
255	event ((struct ev_watcher *)w, EV_SIGNAL);	429	event ((W)w, EV_SIGNAL);
256	}	430	}
257	}	431	}
258		432
259	static void	433	static void
260	siginit (void)	434	siginit (void)
…		…
264		438
265	/* rather than sort out wether we really need nb, set it */	439	/* rather than sort out wether we really need nb, set it */
266	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	440	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
267	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	441	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
268		442
269	evio_set (&sigev, sigpipe [0], EV_READ);	443	ev_io_set (&sigev, sigpipe [0], EV_READ);
270	evio_start (&sigev);	444	ev_io_start (&sigev);
271	}	445	}
272		446
273	/*****************************************************************************/	447	/*****************************************************************************/
274		448
275	static struct ev_idle **idles;	449	static struct ev_idle **idles;
276	static int idlemax, idlecnt;	450	static int idlemax, idlecnt;
277		451
		452	static struct ev_prepare **prepares;
		453	static int preparemax, preparecnt;
		454
278	static struct ev_check **checks;	455	static struct ev_check **checks;
279	static int checkmax, checkcnt;	456	static int checkmax, checkcnt;
280		457
281	/*****************************************************************************/	458	/*****************************************************************************/
282		459
		460	static struct ev_child *childs [PID_HASHSIZE];
		461	static struct ev_signal childev;
		462
		463	#ifndef WCONTINUED
		464	# define WCONTINUED 0
		465	#endif
		466
		467	static void
		468	childcb (struct ev_signal *sw, int revents)
		469	{
		470	struct ev_child *w;
		471	int pid, status;
		472
		473	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)
		474	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)
		475	if (w->pid == pid \|\| !w->pid)
		476	{
		477	w->status = status;
		478	event ((W)w, EV_CHILD);
		479	}
		480	}
		481
		482	/*****************************************************************************/
		483
283	#if HAVE_EPOLL	484	#if EV_USE_EPOLL
284	# include "ev_epoll.c"	485	# include "ev_epoll.c"
285	#endif	486	#endif
		487	#if EV_USE_POLL
		488	# include "ev_poll.c"
		489	#endif
286	#if HAVE_SELECT	490	#if EV_USE_SELECT
287	# include "ev_select.c"	491	# include "ev_select.c"
288	#endif	492	#endif
289		493
		494	int
		495	ev_version_major (void)
		496	{
		497	return EV_VERSION_MAJOR;
		498	}
		499
		500	int
		501	ev_version_minor (void)
		502	{
		503	return EV_VERSION_MINOR;
		504	}
		505
		506	/* return true if we are running with elevated privileges and ignore env variables */
		507	static int
		508	enable_secure ()
		509	{
		510	return getuid () != geteuid ()
		511	\|\| getgid () != getegid ();
		512	}
		513
290	int ev_init (int flags)	514	int ev_init (int methods)
291	{	515	{
292	#if HAVE_MONOTONIC
293	{
294	struct timespec ts;
295	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
296	have_monotonic = 1;
297	}
298	#endif
299
300	ev_now = ev_time ();
301	now = get_clock ();
302	diff = ev_now - now;
303
304	if (pipe (sigpipe))
305	return 0;
306
307	ev_method = EVMETHOD_NONE;
308	#if HAVE_EPOLL
309	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
310	#endif
311	#if HAVE_SELECT
312	if (ev_method == EVMETHOD_NONE) select_init (flags);
313	#endif
314
315	if (ev_method)	516	if (!ev_method)
		517	{
		518	#if EV_USE_MONOTONIC
316	{	519	{
		520	struct timespec ts;
		521	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		522	have_monotonic = 1;
		523	}
		524	#endif
		525
		526	ev_now = ev_time ();
		527	now = get_clock ();
		528	now_floor = now;
		529	diff = ev_now - now;
		530
		531	if (pipe (sigpipe))
		532	return 0;
		533
		534	if (methods == EVMETHOD_AUTO)
		535	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		536	methods = atoi (getenv ("LIBEV_METHODS"));
		537	else
		538	methods = EVMETHOD_ANY;
		539
		540	ev_method = 0;
		541	#if EV_USE_EPOLL
		542	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
		543	#endif
		544	#if EV_USE_POLL
		545	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		546	#endif
		547	#if EV_USE_SELECT
		548	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
		549	#endif
		550
		551	if (ev_method)
		552	{
317	evw_init (&sigev, sigcb, 0);	553	ev_watcher_init (&sigev, sigcb);
318	siginit ();	554	siginit ();
		555
		556	ev_signal_init (&childev, childcb, SIGCHLD);
		557	ev_signal_start (&childev);
		558	}
319	}	559	}
320		560
321	return ev_method;	561	return ev_method;
322	}	562	}
323		563
324	/*****************************************************************************/	564	/*****************************************************************************/
325		565
326	void ev_prefork (void)	566	void
		567	ev_fork_prepare (void)
327	{	568	{
		569	/* nop */
328	}	570	}
329		571
		572	void
330	void ev_postfork_parent (void)	573	ev_fork_parent (void)
331	{	574	{
		575	/* nop */
332	}	576	}
333		577
		578	void
334	void ev_postfork_child (void)	579	ev_fork_child (void)
335	{	580	{
336	#if HAVE_EPOLL	581	#if EV_USE_EPOLL
337	if (ev_method == EVMETHOD_EPOLL)	582	if (ev_method == EVMETHOD_EPOLL)
338	epoll_postfork_child ();	583	epoll_postfork_child ();
339	#endif	584	#endif
340		585
341	evio_stop (&sigev);	586	ev_io_stop (&sigev);
342	close (sigpipe [0]);	587	close (sigpipe [0]);
343	close (sigpipe [1]);	588	close (sigpipe [1]);
344	pipe (sigpipe);	589	pipe (sigpipe);
345	siginit ();	590	siginit ();
346	}	591	}
347		592
348	/*****************************************************************************/	593	/*****************************************************************************/
349		594
350	static void	595	static void
351	fd_reify (void)
352	{
353	int i;
354
355	for (i = 0; i < fdchangecnt; ++i)
356	{
357	int fd = fdchanges [i];
358	ANFD *anfd = anfds + fd;
359	struct ev_io *w;
360
361	int wev = 0;
362
363	for (w = anfd->head; w; w = w->next)
364	wev \|= w->events;
365
366	if (anfd->wev != wev)
367	{
368	method_modify (fd, anfd->wev, wev);
369	anfd->wev = wev;
370	}
371	}
372
373	fdchangecnt = 0;
374	}
375
376	static void
377	call_pending ()	596	call_pending (void)
378	{	597	{
379	int i;	598	while (pendingcnt)
380
381	for (i = 0; i < pendingcnt; ++i)
382	{	599	{
383	ANPENDING *p = pendings + i;	600	ANPENDING *p = pendings + --pendingcnt;
384		601
385	if (p->w)	602	if (p->w)
386	{	603	{
387	p->w->pending = 0;	604	p->w->pending = 0;
388	p->w->cb (p->w, p->events);	605	p->w->cb (p->w, p->events);
389	}	606	}
390	}	607	}
391
392	pendingcnt = 0;
393	}	608	}
394		609
395	static void	610	static void
396	timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now)	611	timers_reify (void)
397	{	612	{
398	while (timercnt && timers [0]->at <= now)	613	while (timercnt && timers [0]->at <= now)
399	{	614	{
400	struct ev_timer *w = timers [0];	615	struct ev_timer *w = timers [0];
401		616
402	/* first reschedule or stop timer */	617	/* first reschedule or stop timer */
403	if (w->repeat)	618	if (w->repeat)
404	{	619	{
405	if (w->is_abs)	620	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
406	w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat;
407	else
408	w->at = now + w->repeat;	621	w->at = now + w->repeat;
409
410	assert (w->at > now);
411
412	downheap (timers, timercnt, 0);	622	downheap ((WT *)timers, timercnt, 0);
413	}	623	}
414	else	624	else
415	{
416	evtimer_stop (w); /* nonrepeating: stop timer */	625	ev_timer_stop (w); /* nonrepeating: stop timer */
417	--timercnt; /* maybe pass by reference instead? */	626
		627	event ((W)w, EV_TIMEOUT);
		628	}
		629	}
		630
		631	static void
		632	periodics_reify (void)
		633	{
		634	while (periodiccnt && periodics [0]->at <= ev_now)
		635	{
		636	struct ev_periodic *w = periodics [0];
		637
		638	/* first reschedule or stop timer */
		639	if (w->interval)
418	}	640	{
		641	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
		642	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
		643	downheap ((WT *)periodics, periodiccnt, 0);
		644	}
		645	else
		646	ev_periodic_stop (w); /* nonrepeating: stop timer */
419		647
420	event ((struct ev_watcher *)w, EV_TIMEOUT);	648	event ((W)w, EV_PERIODIC);
421	}	649	}
422	}	650	}
423		651
424	static void	652	static void
425	time_update ()	653	periodics_reschedule (ev_tstamp diff)
426	{	654	{
427	int i;	655	int i;
428	ev_now = ev_time ();
429		656
430	if (have_monotonic)	657	/* adjust periodics after time jump */
		658	for (i = 0; i < periodiccnt; ++i)
431	{	659	{
432	ev_tstamp odiff = diff;	660	struct ev_periodic *w = periodics [i];
433		661
434	/* detecting time jumps is much more difficult */	662	if (w->interval)
435	for (i = 2; --i; ) /* loop a few times, before making important decisions */
436	{
437	now = get_clock ();
438	diff = ev_now - now;
439
440	if (fabs (odiff - diff) < MIN_TIMEJUMP)
441	return; /* all is well */
442
443	ev_now = ev_time ();
444	}	663	{
		664	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
445		665
446	/* time jump detected, reschedule atimers */	666	if (fabs (diff) >= 1e-4)
447	for (i = 0; i < atimercnt; ++i)	667	{
		668	ev_periodic_stop (w);
		669	ev_periodic_start (w);
		670
		671	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		672	}
448	{	673	}
449	struct ev_timer *w = atimers [i];	674	}
450	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;	675	}
451	}	676
		677	static int
		678	time_update_monotonic (void)
		679	{
		680	now = get_clock ();
		681
		682	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		683	{
		684	ev_now = now + diff;
		685	return 0;
452	}	686	}
453	else	687	else
454	{	688	{
		689	now_floor = now;
		690	ev_now = ev_time ();
		691	return 1;
		692	}
		693	}
		694
		695	static void
		696	time_update (void)
		697	{
		698	int i;
		699
		700	#if EV_USE_MONOTONIC
		701	if (expect_true (have_monotonic))
		702	{
		703	if (time_update_monotonic ())
		704	{
		705	ev_tstamp odiff = diff;
		706
		707	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		708	{
		709	diff = ev_now - now;
		710
		711	if (fabs (odiff - diff) < MIN_TIMEJUMP)
		712	return; /* all is well */
		713
		714	ev_now = ev_time ();
		715	now = get_clock ();
		716	now_floor = now;
		717	}
		718
		719	periodics_reschedule (diff - odiff);
		720	/* no timer adjustment, as the monotonic clock doesn't jump */
		721	}
		722	}
		723	else
		724	#endif
		725	{
		726	ev_now = ev_time ();
		727
455	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	728	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
456	/* time jump detected, adjust rtimers */	729	{
		730	periodics_reschedule (ev_now - now);
		731
		732	/* adjust timers. this is easy, as the offset is the same for all */
457	for (i = 0; i < rtimercnt; ++i)	733	for (i = 0; i < timercnt; ++i)
458	rtimers [i]->at += ev_now - now;	734	timers [i]->at += diff;
		735	}
459		736
460	now = ev_now;	737	now = ev_now;
461	}	738	}
462	}	739	}
463		740
464	int ev_loop_done;	741	int ev_loop_done;
465		742
466	void ev_loop (int flags)	743	void ev_loop (int flags)
467	{	744	{
468	double block;	745	double block;
469	ev_loop_done = flags & EVLOOP_ONESHOT;	746	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
470
471	if (checkcnt)
472	{
473	queue_events (checks, checkcnt, EV_CHECK);
474	call_pending ();
475	}
476		747
477	do	748	do
478	{	749	{
		750	/* queue check watchers (and execute them) */
		751	if (expect_false (preparecnt))
		752	{
		753	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		754	call_pending ();
		755	}
		756
479	/* update fd-related kernel structures */	757	/* update fd-related kernel structures */
480	fd_reify ();	758	fd_reify ();
481		759
482	/* calculate blocking time */	760	/* calculate blocking time */
		761
		762	/* we only need this for !monotonic clockor timers, but as we basically
		763	always have timers, we just calculate it always */
		764	#if EV_USE_MONOTONIC
		765	if (expect_true (have_monotonic))
		766	time_update_monotonic ();
		767	else
		768	#endif
		769	{
		770	ev_now = ev_time ();
		771	now = ev_now;
		772	}
		773
483	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	774	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
484	block = 0.;	775	block = 0.;
485	else	776	else
486	{	777	{
487	block = MAX_BLOCKTIME;	778	block = MAX_BLOCKTIME;
488		779
489	if (rtimercnt)	780	if (timercnt)
490	{	781	{
491	ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge;	782	ev_tstamp to = timers [0]->at - now + method_fudge;
492	if (block > to) block = to;	783	if (block > to) block = to;
493	}	784	}
494		785
495	if (atimercnt)	786	if (periodiccnt)
496	{	787	{
497	ev_tstamp to = atimers [0]->at - ev_time () + method_fudge;	788	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;
498	if (block > to) block = to;	789	if (block > to) block = to;
499	}	790	}
500		791
501	if (block < 0.) block = 0.;	792	if (block < 0.) block = 0.;
502	}	793	}
…		…
505		796
506	/* update ev_now, do magic */	797	/* update ev_now, do magic */
507	time_update ();	798	time_update ();
508		799
509	/* queue pending timers and reschedule them */	800	/* queue pending timers and reschedule them */
510	/* absolute timers first */	801	timers_reify (); /* relative timers called last */
511	timers_reify (atimers, atimercnt, ev_now);	802	periodics_reify (); /* absolute timers called first */
512	/* relative timers second */
513	timers_reify (rtimers, rtimercnt, now);
514		803
515	/* queue idle watchers unless io or timers are pending */	804	/* queue idle watchers unless io or timers are pending */
516	if (!pendingcnt)	805	if (!pendingcnt)
517	queue_events (idles, idlecnt, EV_IDLE);	806	queue_events ((W *)idles, idlecnt, EV_IDLE);
518		807
519	/* queue check and possibly idle watchers */	808	/* queue check watchers, to be executed first */
		809	if (checkcnt)
520	queue_events (checks, checkcnt, EV_CHECK);	810	queue_events ((W *)checks, checkcnt, EV_CHECK);
521		811
522	call_pending ();	812	call_pending ();
523	}	813	}
524	while (!ev_loop_done);	814	while (!ev_loop_done);
525	}
526		815
527	/*****************************************************************************/	816	if (ev_loop_done != 2)
		817	ev_loop_done = 0;
		818	}
528		819
		820	/*****************************************************************************/
		821
529	static void	822	static void
530	wlist_add (struct ev_watcher_list *head, struct ev_watcher_list elem)	823	wlist_add (WL *head, WL elem)
531	{	824	{
532	elem->next = *head;	825	elem->next = *head;
533	*head = elem;	826	*head = elem;
534	}	827	}
535		828
536	static void	829	static void
537	wlist_del (struct ev_watcher_list *head, struct ev_watcher_list elem)	830	wlist_del (WL *head, WL elem)
538	{	831	{
539	while (*head)	832	while (*head)
540	{	833	{
541	if (*head == elem)	834	if (*head == elem)
542	{	835	{
…		…
547	head = &(*head)->next;	840	head = &(*head)->next;
548	}	841	}
549	}	842	}
550		843
551	static void	844	static void
552	ev_start (struct ev_watcher *w, int active)	845	ev_clear_pending (W w)
553	{	846	{
		847	if (w->pending)
		848	{
		849	pendings [w->pending - 1].w = 0;
554	w->pending = 0;	850	w->pending = 0;
		851	}
		852	}
		853
		854	static void
		855	ev_start (W w, int active)
		856	{
555	w->active = active;	857	w->active = active;
556	}	858	}
557		859
558	static void	860	static void
559	ev_stop (struct ev_watcher *w)	861	ev_stop (W w)
560	{	862	{
561	if (w->pending)
562	pendings [w->pending - 1].w = 0;
563
564	w->active = 0;	863	w->active = 0;
565	/* nop */
566	}	864	}
567		865
568	/*****************************************************************************/	866	/*****************************************************************************/
569		867
570	void	868	void
571	evio_start (struct ev_io *w)	869	ev_io_start (struct ev_io *w)
572	{	870	{
		871	int fd = w->fd;
		872
573	if (ev_is_active (w))	873	if (ev_is_active (w))
574	return;	874	return;
575		875
576	int fd = w->fd;	876	assert (("ev_io_start called with negative fd", fd >= 0));
577		877
578	ev_start ((struct ev_watcher *)w, 1);	878	ev_start ((W)w, 1);
579	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	879	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
580	wlist_add ((struct ev_watcher_list *)&anfds[fd].head, (struct ev_watcher_list )w);	880	wlist_add ((WL *)&anfds[fd].head, (WL)w);
581		881
582	++fdchangecnt;	882	fd_change (fd);
583	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
584	fdchanges [fdchangecnt - 1] = fd;
585	}	883	}
586		884
587	void	885	void
588	evio_stop (struct ev_io *w)	886	ev_io_stop (struct ev_io *w)
589	{	887	{
		888	ev_clear_pending ((W)w);
590	if (!ev_is_active (w))	889	if (!ev_is_active (w))
591	return;	890	return;
592		891
593	wlist_del ((struct ev_watcher_list *)&anfds[w->fd].head, (struct ev_watcher_list )w);	892	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
594	ev_stop ((struct ev_watcher *)w);	893	ev_stop ((W)w);
595		894
596	++fdchangecnt;	895	fd_change (w->fd);
597	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
598	fdchanges [fdchangecnt - 1] = w->fd;
599	}	896	}
600		897
601	void	898	void
602	evtimer_start (struct ev_timer *w)	899	ev_timer_start (struct ev_timer *w)
603	{	900	{
604	if (ev_is_active (w))	901	if (ev_is_active (w))
605	return;	902	return;
606		903
607	if (w->is_abs)	904	w->at += now;
		905
		906	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		907
		908	ev_start ((W)w, ++timercnt);
		909	array_needsize (timers, timermax, timercnt, );
		910	timers [timercnt - 1] = w;
		911	upheap ((WT *)timers, timercnt - 1);
		912	}
		913
		914	void
		915	ev_timer_stop (struct ev_timer *w)
		916	{
		917	ev_clear_pending ((W)w);
		918	if (!ev_is_active (w))
		919	return;
		920
		921	if (w->active < timercnt--)
		922	{
		923	timers [w->active - 1] = timers [timercnt];
		924	downheap ((WT *)timers, timercnt, w->active - 1);
608	{	925	}
609	/* this formula differs from the one in timer_reify becuse we do not round up */	926
		927	w->at = w->repeat;
		928
		929	ev_stop ((W)w);
		930	}
		931
		932	void
		933	ev_timer_again (struct ev_timer *w)
		934	{
		935	if (ev_is_active (w))
		936	{
610	if (w->repeat)	937	if (w->repeat)
		938	{
		939	w->at = now + w->repeat;
		940	downheap ((WT *)timers, timercnt, w->active - 1);
		941	}
		942	else
		943	ev_timer_stop (w);
		944	}
		945	else if (w->repeat)
		946	ev_timer_start (w);
		947	}
		948
		949	void
		950	ev_periodic_start (struct ev_periodic *w)
		951	{
		952	if (ev_is_active (w))
		953	return;
		954
		955	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		956
		957	/* this formula differs from the one in periodic_reify because we do not always round up */
		958	if (w->interval)
611	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;	959	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
612		960
613	ev_start ((struct ev_watcher *)w, ++atimercnt);	961	ev_start ((W)w, ++periodiccnt);
614	array_needsize (atimers, atimermax, atimercnt, );	962	array_needsize (periodics, periodicmax, periodiccnt, );
615	atimers [atimercnt - 1] = w;	963	periodics [periodiccnt - 1] = w;
616	upheap (atimers, atimercnt - 1);	964	upheap ((WT *)periodics, periodiccnt - 1);
617	}
618	else
619	{
620	w->at += now;
621
622	ev_start ((struct ev_watcher *)w, ++rtimercnt);
623	array_needsize (rtimers, rtimermax, rtimercnt, );
624	rtimers [rtimercnt - 1] = w;
625	upheap (rtimers, rtimercnt - 1);
626	}
627
628	}	965	}
629		966
630	void	967	void
631	evtimer_stop (struct ev_timer *w)	968	ev_periodic_stop (struct ev_periodic *w)
632	{	969	{
		970	ev_clear_pending ((W)w);
633	if (!ev_is_active (w))	971	if (!ev_is_active (w))
634	return;	972	return;
635		973
636	if (w->is_abs)
637	{
638	if (w->active < atimercnt--)	974	if (w->active < periodiccnt--)
639	{
640	atimers [w->active - 1] = atimers [atimercnt];
641	downheap (atimers, atimercnt, w->active - 1);
642	}
643	}	975	{
644	else	976	periodics [w->active - 1] = periodics [periodiccnt];
		977	downheap ((WT *)periodics, periodiccnt, w->active - 1);
645	{	978	}
646	if (w->active < rtimercnt--)
647	{
648	rtimers [w->active - 1] = rtimers [rtimercnt];
649	downheap (rtimers, rtimercnt, w->active - 1);
650	}
651	}
652		979
653	ev_stop ((struct ev_watcher *)w);	980	ev_stop ((W)w);
654	}	981	}
655		982
656	void	983	void
657	evsignal_start (struct ev_signal *w)	984	ev_signal_start (struct ev_signal *w)
658	{	985	{
659	if (ev_is_active (w))	986	if (ev_is_active (w))
660	return;	987	return;
661		988
662	ev_start ((struct ev_watcher *)w, 1);	989	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		990
		991	ev_start ((W)w, 1);
663	array_needsize (signals, signalmax, w->signum, signals_init);	992	array_needsize (signals, signalmax, w->signum, signals_init);
664	wlist_add ((struct ev_watcher_list *)&signals [w->signum - 1].head, (struct ev_watcher_list )w);	993	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
665		994
666	if (!w->next)	995	if (!w->next)
667	{	996	{
668	struct sigaction sa;	997	struct sigaction sa;
669	sa.sa_handler = sighandler;	998	sa.sa_handler = sighandler;
…		…
672	sigaction (w->signum, &sa, 0);	1001	sigaction (w->signum, &sa, 0);
673	}	1002	}
674	}	1003	}
675		1004
676	void	1005	void
677	evsignal_stop (struct ev_signal *w)	1006	ev_signal_stop (struct ev_signal *w)
678	{	1007	{
		1008	ev_clear_pending ((W)w);
679	if (!ev_is_active (w))	1009	if (!ev_is_active (w))
680	return;	1010	return;
681		1011
682	wlist_del ((struct ev_watcher_list *)&signals [w->signum - 1].head, (struct ev_watcher_list )w);	1012	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
683	ev_stop ((struct ev_watcher *)w);	1013	ev_stop ((W)w);
684		1014
685	if (!signals [w->signum - 1].head)	1015	if (!signals [w->signum - 1].head)
686	signal (w->signum, SIG_DFL);	1016	signal (w->signum, SIG_DFL);
687	}	1017	}
688		1018
		1019	void
689	void evidle_start (struct ev_idle *w)	1020	ev_idle_start (struct ev_idle *w)
690	{	1021	{
691	if (ev_is_active (w))	1022	if (ev_is_active (w))
692	return;	1023	return;
693		1024
694	ev_start ((struct ev_watcher *)w, ++idlecnt);	1025	ev_start ((W)w, ++idlecnt);
695	array_needsize (idles, idlemax, idlecnt, );	1026	array_needsize (idles, idlemax, idlecnt, );
696	idles [idlecnt - 1] = w;	1027	idles [idlecnt - 1] = w;
697	}	1028	}
698		1029
		1030	void
699	void evidle_stop (struct ev_idle *w)	1031	ev_idle_stop (struct ev_idle *w)
700	{	1032	{
		1033	ev_clear_pending ((W)w);
		1034	if (ev_is_active (w))
		1035	return;
		1036
701	idles [w->active - 1] = idles [--idlecnt];	1037	idles [w->active - 1] = idles [--idlecnt];
702	ev_stop ((struct ev_watcher *)w);	1038	ev_stop ((W)w);
703	}	1039	}
704		1040
705	void evcheck_start (struct ev_check *w)	1041	void
		1042	ev_prepare_start (struct ev_prepare *w)
706	{	1043	{
707	if (ev_is_active (w))	1044	if (ev_is_active (w))
708	return;	1045	return;
709		1046
710	ev_start ((struct ev_watcher *)w, ++checkcnt);	1047	ev_start ((W)w, ++preparecnt);
		1048	array_needsize (prepares, preparemax, preparecnt, );
		1049	prepares [preparecnt - 1] = w;
		1050	}
		1051
		1052	void
		1053	ev_prepare_stop (struct ev_prepare *w)
		1054	{
		1055	ev_clear_pending ((W)w);
		1056	if (ev_is_active (w))
		1057	return;
		1058
		1059	prepares [w->active - 1] = prepares [--preparecnt];
		1060	ev_stop ((W)w);
		1061	}
		1062
		1063	void
		1064	ev_check_start (struct ev_check *w)
		1065	{
		1066	if (ev_is_active (w))
		1067	return;
		1068
		1069	ev_start ((W)w, ++checkcnt);
711	array_needsize (checks, checkmax, checkcnt, );	1070	array_needsize (checks, checkmax, checkcnt, );
712	checks [checkcnt - 1] = w;	1071	checks [checkcnt - 1] = w;
713	}	1072	}
714		1073
		1074	void
715	void evcheck_stop (struct ev_check *w)	1075	ev_check_stop (struct ev_check *w)
716	{	1076	{
		1077	ev_clear_pending ((W)w);
		1078	if (ev_is_active (w))
		1079	return;
		1080
717	checks [w->active - 1] = checks [--checkcnt];	1081	checks [w->active - 1] = checks [--checkcnt];
718	ev_stop ((struct ev_watcher *)w);	1082	ev_stop ((W)w);
719	}	1083	}
720		1084
		1085	void
		1086	ev_child_start (struct ev_child *w)
		1087	{
		1088	if (ev_is_active (w))
		1089	return;
		1090
		1091	ev_start ((W)w, 1);
		1092	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1093	}
		1094
		1095	void
		1096	ev_child_stop (struct ev_child *w)
		1097	{
		1098	ev_clear_pending ((W)w);
		1099	if (ev_is_active (w))
		1100	return;
		1101
		1102	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1103	ev_stop ((W)w);
		1104	}
		1105
721	/*****************************************************************************/	1106	/*****************************************************************************/
		1107
		1108	struct ev_once
		1109	{
		1110	struct ev_io io;
		1111	struct ev_timer to;
		1112	void (cb)(int revents, void arg);
		1113	void *arg;
		1114	};
		1115
		1116	static void
		1117	once_cb (struct ev_once *once, int revents)
		1118	{
		1119	void (cb)(int revents, void arg) = once->cb;
		1120	void *arg = once->arg;
		1121
		1122	ev_io_stop (&once->io);
		1123	ev_timer_stop (&once->to);
		1124	free (once);
		1125
		1126	cb (revents, arg);
		1127	}
		1128
		1129	static void
		1130	once_cb_io (struct ev_io *w, int revents)
		1131	{
		1132	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
		1133	}
		1134
		1135	static void
		1136	once_cb_to (struct ev_timer *w, int revents)
		1137	{
		1138	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
		1139	}
		1140
		1141	void
		1142	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
		1143	{
		1144	struct ev_once *once = malloc (sizeof (struct ev_once));
		1145
		1146	if (!once)
		1147	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
		1148	else
		1149	{
		1150	once->cb = cb;
		1151	once->arg = arg;
		1152
		1153	ev_watcher_init (&once->io, once_cb_io);
		1154	if (fd >= 0)
		1155	{
		1156	ev_io_set (&once->io, fd, events);
		1157	ev_io_start (&once->io);
		1158	}
		1159
		1160	ev_watcher_init (&once->to, once_cb_to);
		1161	if (timeout >= 0.)
		1162	{
		1163	ev_timer_set (&once->to, timeout, 0.);
		1164	ev_timer_start (&once->to);
		1165	}
		1166	}
		1167	}
		1168
		1169	/*****************************************************************************/
		1170
722	#if 1	1171	#if 0
		1172
		1173	struct ev_io wio;
723		1174
724	static void	1175	static void
725	sin_cb (struct ev_io *w, int revents)	1176	sin_cb (struct ev_io *w, int revents)
726	{	1177	{
727	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1178	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
…		…
729		1180
730	static void	1181	static void
731	ocb (struct ev_timer *w, int revents)	1182	ocb (struct ev_timer *w, int revents)
732	{	1183	{
733	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1184	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
734	evtimer_stop (w);	1185	ev_timer_stop (w);
735	evtimer_start (w);	1186	ev_timer_start (w);
736	}	1187	}
737		1188
738	static void	1189	static void
739	scb (struct ev_signal *w, int revents)	1190	scb (struct ev_signal *w, int revents)
740	{	1191	{
741	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1192	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1193	ev_io_stop (&wio);
		1194	ev_io_start (&wio);
742	}	1195	}
743		1196
744	static void	1197	static void
745	gcb (struct ev_signal *w, int revents)	1198	gcb (struct ev_signal *w, int revents)
746	{	1199	{
747	fprintf (stderr, "generic %x\n", revents);	1200	fprintf (stderr, "generic %x\n", revents);
		1201
748	}	1202	}
749		1203
750	int main (void)	1204	int main (void)
751	{	1205	{
752	struct ev_io sin;
753
754	ev_init (0);	1206	ev_init (0);
755		1207
756	evw_init (&sin, sin_cb, 55);
757	evio_set (&sin, 0, EV_READ);	1208	ev_io_init (&wio, sin_cb, 0, EV_READ);
758	evio_start (&sin);	1209	ev_io_start (&wio);
759		1210
760	struct ev_timer t[10000];	1211	struct ev_timer t[10000];
761		1212
762	#if 0	1213	#if 0
763	int i;	1214	int i;
764	for (i = 0; i < 10000; ++i)	1215	for (i = 0; i < 10000; ++i)
765	{	1216	{
766	struct ev_timer *w = t + i;	1217	struct ev_timer *w = t + i;
767	evw_init (w, ocb, i);	1218	ev_watcher_init (w, ocb, i);
768	evtimer_set_abs (w, drand48 (), 0.99775533);	1219	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
769	evtimer_start (w);	1220	ev_timer_start (w);
770	if (drand48 () < 0.5)	1221	if (drand48 () < 0.5)
771	evtimer_stop (w);	1222	ev_timer_stop (w);
772	}	1223	}
773	#endif	1224	#endif
774		1225
775	struct ev_timer t1;	1226	struct ev_timer t1;
776	evw_init (&t1, ocb, 0);	1227	ev_timer_init (&t1, ocb, 5, 10);
777	evtimer_set_abs (&t1, 5, 10);
778	evtimer_start (&t1);	1228	ev_timer_start (&t1);
779		1229
780	struct ev_signal sig;	1230	struct ev_signal sig;
781	evw_init (&sig, scb, 65535);
782	evsignal_set (&sig, SIGQUIT);	1231	ev_signal_init (&sig, scb, SIGQUIT);
783	evsignal_start (&sig);	1232	ev_signal_start (&sig);
784		1233
785	struct ev_check cw;	1234	struct ev_check cw;
786	evw_init (&cw, gcb, 0);	1235	ev_check_init (&cw, gcb);
787	evcheck_start (&cw);	1236	ev_check_start (&cw);
788		1237
789	struct ev_idle iw;	1238	struct ev_idle iw;
790	evw_init (&iw, gcb, 0);	1239	ev_idle_init (&iw, gcb);
791	evidle_start (&iw);	1240	ev_idle_start (&iw);
792		1241
793	ev_loop (0);	1242	ev_loop (0);
794		1243
795	return 0;	1244	return 0;
796	}	1245	}

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Comparing libev/ev.c (file contents): Revision 1.9 by root, Wed Oct 31 07:24:17 2007 UTC vs. Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.9 by root, Wed Oct 31 07:24:17 2007 UTC vs.
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC