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

Comparing libev/ev.c (file contents):
Revision 1.15 by root, Wed Oct 31 11:56:34 2007 UTC vs.
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC

…		…
		1	/*
		2	* libev event processing core, watcher management
		3	*
		4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
		5	* All rights reserved.
		6	*
		7	* Redistribution and use in source and binary forms, with or without
		8	* modification, are permitted provided that the following conditions are
		9	* met:
		10	*
		11	* * Redistributions of source code must retain the above copyright
		12	* notice, this list of conditions and the following disclaimer.
		13	*
		14	* * Redistributions in binary form must reproduce the above
		15	* copyright notice, this list of conditions and the following
		16	* disclaimer in the documentation and/or other materials provided
		17	* with the distribution.
		18	*
		19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
		20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
		21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
		22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
		23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
		24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
		25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
		29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		30	*/
		31	#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	#ifndef WIN32
		48	# include <sys/wait.h>
		49	#endif
11	#include <sys/time.h>	50	#include <sys/time.h>
12	#include <time.h>	51	#include <time.h>
13		52
14	#define HAVE_EPOLL 1	53	/**/
15		54
16	#ifndef HAVE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
		56	# define EV_USE_MONOTONIC 1
		57	#endif
		58
		59	#ifndef EV_USE_SELECT
		60	# define EV_USE_SELECT 1
		61	#endif
		62
		63	#ifndef EV_USE_POLL
		64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		65	#endif
		66
		67	#ifndef EV_USE_EPOLL
		68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
		73	#endif
		74
		75	#ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 1
		77	#endif
		78
		79	/**/
		80
17	# ifdef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
18	# define HAVE_MONOTONIC 1	83	# define EV_USE_MONOTONIC 0
19	# endif	84	#endif
20	#endif
21		85
22	#ifndef HAVE_SELECT
23	# define HAVE_SELECT 1
24	#endif
25
26	#ifndef HAVE_EPOLL
27	# define HAVE_EPOLL 0
28	#endif
29
30	#ifndef HAVE_REALTIME	86	#ifndef CLOCK_REALTIME
31	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	87	# undef EV_USE_REALTIME
		88	# define EV_USE_REALTIME 0
32	#endif	89	#endif
		90
		91	/**/
33		92
34	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
35	#define MAX_BLOCKTIME 60.	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
36		97
37	#include "ev.h"	98	#include "ev.h"
		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
		107
		108	#define expect_false(expr) expect ((expr) != 0, 0)
		109	#define expect_true(expr) expect ((expr) != 0, 1)
		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
38		113
39	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
40	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
41	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
42		117
43	static ev_tstamp now, diff; /* monotonic clock */	118	static ev_tstamp now_floor, now, diff; /* monotonic clock */
44	ev_tstamp ev_now;	119	ev_tstamp ev_now;
45	int ev_method;	120	int ev_method;
46		121
47	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
48		123
53	/*****************************************************************************/	128	/*****************************************************************************/
54		129
55	ev_tstamp	130	ev_tstamp
56	ev_time (void)	131	ev_time (void)
57	{	132	{
58	#if HAVE_REALTIME	133	#if EV_USE_REALTIME
59	struct timespec ts;	134	struct timespec ts;
60	clock_gettime (CLOCK_REALTIME, &ts);	135	clock_gettime (CLOCK_REALTIME, &ts);
61	return ts.tv_sec + ts.tv_nsec * 1e-9;	136	return ts.tv_sec + ts.tv_nsec * 1e-9;
62	#else	137	#else
63	struct timeval tv;	138	struct timeval tv;
…		…
67	}	142	}
68		143
69	static ev_tstamp	144	static ev_tstamp
70	get_clock (void)	145	get_clock (void)
71	{	146	{
72	#if HAVE_MONOTONIC	147	#if EV_USE_MONOTONIC
73	if (have_monotonic)	148	if (expect_true (have_monotonic))
74	{	149	{
75	struct timespec ts;	150	struct timespec ts;
76	clock_gettime (CLOCK_MONOTONIC, &ts);	151	clock_gettime (CLOCK_MONOTONIC, &ts);
77	return ts.tv_sec + ts.tv_nsec * 1e-9;	152	return ts.tv_sec + ts.tv_nsec * 1e-9;
78	}	153	}
79	#endif	154	#endif
80		155
81	return ev_time ();	156	return ev_time ();
82	}	157	}
83		158
		159	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		160
84	#define array_needsize(base,cur,cnt,init) \	161	#define array_needsize(base,cur,cnt,init) \
85	if ((cnt) > cur) \	162	if (expect_false ((cnt) > cur)) \
86	{ \	163	{ \
87	int newcnt = cur ? cur << 1 : 16; \	164	int newcnt = cur; \
		165	do \
		166	{ \
		167	newcnt = array_roundsize (base, newcnt << 1); \
		168	} \
		169	while ((cnt) > newcnt); \
		170	\
88	base = realloc (base, sizeof (base) (newcnt)); \	171	base = realloc (base, sizeof (base) (newcnt)); \
89	init (base + cur, newcnt - cur); \	172	init (base + cur, newcnt - cur); \
90	cur = newcnt; \	173	cur = newcnt; \
91	}	174	}
92		175
93	/*****************************************************************************/	176	/*****************************************************************************/
94		177
95	typedef struct	178	typedef struct
96	{	179	{
97	struct ev_io *head;	180	struct ev_io *head;
98	unsigned char wev, rev; /* want, received event set */	181	unsigned char events;
		182	unsigned char reify;
99	} ANFD;	183	} ANFD;
100		184
101	static ANFD *anfds;	185	static ANFD *anfds;
102	static int anfdmax;	186	static int anfdmax;
103		187
104	static int *fdchanges;
105	static int fdchangemax, fdchangecnt;
106
107	static void	188	static void
108	anfds_init (ANFD *base, int count)	189	anfds_init (ANFD *base, int count)
109	{	190	{
110	while (count--)	191	while (count--)
111	{	192	{
112	base->head = 0;	193	base->head = 0;
113	base->wev = base->rev = EV_NONE;	194	base->events = EV_NONE;
		195	base->reify = 0;
		196
114	++base;	197	++base;
115	}	198	}
116	}	199	}
117		200
118	typedef struct	201	typedef struct
119	{	202	{
120	W w;	203	W w;
121	int events;	204	int events;
122	} ANPENDING;	205	} ANPENDING;
123		206
124	static ANPENDING *pendings;	207	static ANPENDING *pendings [NUMPRI];
125	static int pendingmax, pendingcnt;	208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
126		209
127	static void	210	static void
128	event (W w, int events)	211	event (W w, int events)
129	{	212	{
		213	if (w->pending)
		214	{
		215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		216	return;
		217	}
		218
130	w->pending = ++pendingcnt;	219	w->pending = ++pendingcnt [ABSPRI (w)];
131	array_needsize (pendings, pendingmax, pendingcnt, );	220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
132	pendings [pendingcnt - 1].w = w;	221	pendings [ABSPRI (w)][w->pending - 1].w = w;
133	pendings [pendingcnt - 1].events = events;	222	pendings [ABSPRI (w)][w->pending - 1].events = events;
		223	}
		224
		225	static void
		226	queue_events (W *events, int eventcnt, int type)
		227	{
		228	int i;
		229
		230	for (i = 0; i < eventcnt; ++i)
		231	event (events [i], type);
134	}	232	}
135		233
136	static void	234	static void
137	fd_event (int fd, int events)	235	fd_event (int fd, int events)
138	{	236	{
…		…
146	if (ev)	244	if (ev)
147	event ((W)w, ev);	245	event ((W)w, ev);
148	}	246	}
149	}	247	}
150		248
		249	/*****************************************************************************/
		250
		251	static int *fdchanges;
		252	static int fdchangemax, fdchangecnt;
		253
151	static void	254	static void
152	queue_events (W *events, int eventcnt, int type)	255	fd_reify (void)
153	{	256	{
154	int i;	257	int i;
155		258
156	for (i = 0; i < eventcnt; ++i)	259	for (i = 0; i < fdchangecnt; ++i)
157	event (events [i], type);	260	{
		261	int fd = fdchanges [i];
		262	ANFD *anfd = anfds + fd;
		263	struct ev_io *w;
		264
		265	int events = 0;
		266
		267	for (w = anfd->head; w; w = w->next)
		268	events \|= w->events;
		269
		270	anfd->reify = 0;
		271
		272	if (anfd->events != events)
		273	{
		274	method_modify (fd, anfd->events, events);
		275	anfd->events = events;
		276	}
		277	}
		278
		279	fdchangecnt = 0;
		280	}
		281
		282	static void
		283	fd_change (int fd)
		284	{
		285	if (anfds [fd].reify \|\| fdchangecnt < 0)
		286	return;
		287
		288	anfds [fd].reify = 1;
		289
		290	++fdchangecnt;
		291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		292	fdchanges [fdchangecnt - 1] = fd;
		293	}
		294
		295	static void
		296	fd_kill (int fd)
		297	{
		298	struct ev_io *w;
		299
		300	printf ("killing fd %d\n", fd);//D
		301	while ((w = anfds [fd].head))
		302	{
		303	ev_io_stop (w);
		304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		305	}
		306	}
		307
		308	/* called on EBADF to verify fds */
		309	static void
		310	fd_ebadf (void)
		311	{
		312	int fd;
		313
		314	for (fd = 0; fd < anfdmax; ++fd)
		315	if (anfds [fd].events)
		316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		317	fd_kill (fd);
		318	}
		319
		320	/* called on ENOMEM in select/poll to kill some fds and retry */
		321	static void
		322	fd_enomem (void)
		323	{
		324	int fd = anfdmax;
		325
		326	while (fd--)
		327	if (anfds [fd].events)
		328	{
		329	close (fd);
		330	fd_kill (fd);
		331	return;
		332	}
158	}	333	}
159		334
160	/*****************************************************************************/	335	/*****************************************************************************/
161		336
162	static struct ev_timer **timers;	337	static struct ev_timer **timers;
…		…
209	/*****************************************************************************/	384	/*****************************************************************************/
210		385
211	typedef struct	386	typedef struct
212	{	387	{
213	struct ev_signal *head;	388	struct ev_signal *head;
214	sig_atomic_t gotsig;	389	sig_atomic_t volatile gotsig;
215	} ANSIG;	390	} ANSIG;
216		391
217	static ANSIG *signals;	392	static ANSIG *signals;
218	static int signalmax;	393	static int signalmax;
219		394
220	static int sigpipe [2];	395	static int sigpipe [2];
221	static sig_atomic_t gotsig;	396	static sig_atomic_t volatile gotsig;
222	static struct ev_io sigev;	397	static struct ev_io sigev;
223		398
224	static void	399	static void
225	signals_init (ANSIG *base, int count)	400	signals_init (ANSIG *base, int count)
226	{	401	{
227	while (count--)	402	while (count--)
228	{	403	{
229	base->head = 0;	404	base->head = 0;
230	base->gotsig = 0;	405	base->gotsig = 0;
		406
231	++base;	407	++base;
232	}	408	}
233	}	409	}
234		410
235	static void	411	static void
…		…
237	{	413	{
238	signals [signum - 1].gotsig = 1;	414	signals [signum - 1].gotsig = 1;
239		415
240	if (!gotsig)	416	if (!gotsig)
241	{	417	{
		418	int old_errno = errno;
242	gotsig = 1;	419	gotsig = 1;
243	write (sigpipe [1], &gotsig, 1);	420	write (sigpipe [1], &signum, 1);
		421	errno = old_errno;
244	}	422	}
245	}	423	}
246		424
247	static void	425	static void
248	sigcb (struct ev_io *iow, int revents)	426	sigcb (struct ev_io *iow, int revents)
249	{	427	{
250	struct ev_signal *w;	428	struct ev_signal *w;
251	int sig;	429	int signum;
252		430
		431	read (sigpipe [0], &revents, 1);
253	gotsig = 0;	432	gotsig = 0;
254	read (sigpipe [0], &revents, 1);
255		433
256	for (sig = signalmax; sig--; )	434	for (signum = signalmax; signum--; )
257	if (signals [sig].gotsig)	435	if (signals [signum].gotsig)
258	{	436	{
259	signals [sig].gotsig = 0;	437	signals [signum].gotsig = 0;
260		438
261	for (w = signals [sig].head; w; w = w->next)	439	for (w = signals [signum].head; w; w = w->next)
262	event ((W)w, EV_SIGNAL);	440	event ((W)w, EV_SIGNAL);
263	}	441	}
264	}	442	}
265		443
266	static void	444	static void
267	siginit (void)	445	siginit (void)
268	{	446	{
		447	#ifndef WIN32
269	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
270	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
271		450
272	/* rather than sort out wether we really need nb, set it */	451	/* rather than sort out wether we really need nb, set it */
273	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
274	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		454	#endif
275		455
276	evio_set (&sigev, sigpipe [0], EV_READ);	456	ev_io_set (&sigev, sigpipe [0], EV_READ);
277	evio_start (&sigev);	457	ev_io_start (&sigev);
278	}	458	}
279		459
280	/*****************************************************************************/	460	/*****************************************************************************/
281		461
282	static struct ev_idle **idles;	462	static struct ev_idle **idles;
283	static int idlemax, idlecnt;	463	static int idlemax, idlecnt;
284		464
		465	static struct ev_prepare **prepares;
		466	static int preparemax, preparecnt;
		467
285	static struct ev_check **checks;	468	static struct ev_check **checks;
286	static int checkmax, checkcnt;	469	static int checkmax, checkcnt;
287		470
288	/*****************************************************************************/	471	/*****************************************************************************/
289		472
		473	static struct ev_child *childs [PID_HASHSIZE];
		474	static struct ev_signal childev;
		475
		476	#ifndef WIN32
		477
		478	#ifndef WCONTINUED
		479	# define WCONTINUED 0
		480	#endif
		481
		482	static void
		483	child_reap (struct ev_signal *sw, int chain, int pid, int status)
		484	{
		485	struct ev_child *w;
		486
		487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)
		488	if (w->pid == pid \|\| !w->pid)
		489	{
		490	w->priority = sw->priority; /* need to do it now */
		491	w->rpid = pid;
		492	w->rstatus = status;
		493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
		494	event ((W)w, EV_CHILD);
		495	}
		496	}
		497
		498	static void
		499	childcb (struct ev_signal *sw, int revents)
		500	{
		501	int pid, status;
		502
		503	printf ("chld %x\n", revents);//D
		504	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
		505	{
		506	/* make sure we are called again until all childs have been reaped */
		507	event ((W)sw, EV_SIGNAL);
		508
		509	child_reap (sw, pid, pid, status);
		510	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		511	}
		512	}
		513
		514	#endif
		515
		516	/*****************************************************************************/
		517
		518	#if EV_USE_KQUEUE
		519	# include "ev_kqueue.c"
		520	#endif
290	#if HAVE_EPOLL	521	#if EV_USE_EPOLL
291	# include "ev_epoll.c"	522	# include "ev_epoll.c"
292	#endif	523	#endif
		524	#if EV_USE_POLL
		525	# include "ev_poll.c"
		526	#endif
293	#if HAVE_SELECT	527	#if EV_USE_SELECT
294	# include "ev_select.c"	528	# include "ev_select.c"
295	#endif	529	#endif
296		530
297	int ev_init (int flags)	531	int
		532	ev_version_major (void)
298	{	533	{
299	#if HAVE_MONOTONIC	534	return EV_VERSION_MAJOR;
300	{	535	}
301	struct timespec ts;
302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
303	have_monotonic = 1;
304	}
305	#endif
306		536
307	ev_now = ev_time ();	537	int
308	now = get_clock ();	538	ev_version_minor (void)
309	diff = ev_now - now;	539	{
		540	return EV_VERSION_MINOR;
		541	}
310		542
311	if (pipe (sigpipe))	543	/* return true if we are running with elevated privileges and should ignore env variables */
		544	static int
		545	enable_secure ()
		546	{
		547	#ifdef WIN32
312	return 0;	548	return 0;
313		549	#else
314	ev_method = EVMETHOD_NONE;	550	return getuid () != geteuid ()
315	#if HAVE_EPOLL	551	\|\| getgid () != getegid ();
316	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
317	#endif	552	#endif
318	#if HAVE_SELECT	553	}
319	if (ev_method == EVMETHOD_NONE) select_init (flags);
320	#endif
321		554
		555	int ev_init (int methods)
		556	{
322	if (ev_method)	557	if (!ev_method)
		558	{
		559	#if EV_USE_MONOTONIC
323	{	560	{
		561	struct timespec ts;
		562	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		563	have_monotonic = 1;
		564	}
		565	#endif
		566
		567	ev_now = ev_time ();
		568	now = get_clock ();
		569	now_floor = now;
		570	diff = ev_now - now;
		571
		572	if (pipe (sigpipe))
		573	return 0;
		574
		575	if (methods == EVMETHOD_AUTO)
		576	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		577	methods = atoi (getenv ("LIBEV_METHODS"));
		578	else
		579	methods = EVMETHOD_ANY;
		580
		581	ev_method = 0;
		582	#if EV_USE_KQUEUE
		583	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);
		584	#endif
		585	#if EV_USE_EPOLL
		586	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
		587	#endif
		588	#if EV_USE_POLL
		589	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		590	#endif
		591	#if EV_USE_SELECT
		592	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
		593	#endif
		594
		595	if (ev_method)
		596	{
324	evw_init (&sigev, sigcb);	597	ev_watcher_init (&sigev, sigcb);
		598	ev_set_priority (&sigev, EV_MAXPRI);
325	siginit ();	599	siginit ();
		600
		601	#ifndef WIN32
		602	ev_signal_init (&childev, childcb, SIGCHLD);
		603	ev_set_priority (&childev, EV_MAXPRI);
		604	ev_signal_start (&childev);
		605	#endif
		606	}
326	}	607	}
327		608
328	return ev_method;	609	return ev_method;
329	}	610	}
330		611
331	/*****************************************************************************/	612	/*****************************************************************************/
332		613
333	void ev_prefork (void)	614	void
		615	ev_fork_prepare (void)
334	{	616	{
335	/* nop */	617	/* nop */
336	}	618	}
337		619
		620	void
338	void ev_postfork_parent (void)	621	ev_fork_parent (void)
339	{	622	{
340	/* nop */	623	/* nop */
341	}	624	}
342		625
		626	void
343	void ev_postfork_child (void)	627	ev_fork_child (void)
344	{	628	{
345	#if HAVE_EPOLL	629	#if EV_USE_EPOLL
346	if (ev_method == EVMETHOD_EPOLL)	630	if (ev_method == EVMETHOD_EPOLL)
347	epoll_postfork_child ();	631	epoll_postfork_child ();
348	#endif	632	#endif
349		633
350	evio_stop (&sigev);	634	ev_io_stop (&sigev);
351	close (sigpipe [0]);	635	close (sigpipe [0]);
352	close (sigpipe [1]);	636	close (sigpipe [1]);
353	pipe (sigpipe);	637	pipe (sigpipe);
354	siginit ();	638	siginit ();
355	}	639	}
356		640
357	/*****************************************************************************/	641	/*****************************************************************************/
358		642
359	static void	643	static void
360	fd_reify (void)	644	call_pending (void)
361	{	645	{
362	int i;	646	int pri;
363		647
364	for (i = 0; i < fdchangecnt; ++i)	648	for (pri = NUMPRI; pri--; )
365	{	649	while (pendingcnt [pri])
366	int fd = fdchanges [i];
367	ANFD *anfd = anfds + fd;
368	struct ev_io *w;
369
370	int wev = 0;
371
372	for (w = anfd->head; w; w = w->next)
373	wev \|= w->events;
374
375	if (anfd->wev != wev)
376	{	650	{
377	method_modify (fd, anfd->wev, wev);	651	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
378	anfd->wev = wev;
379	}
380	}
381		652
382	fdchangecnt = 0;
383	}
384
385	static void
386	call_pending ()
387	{
388	int i;
389
390	for (i = 0; i < pendingcnt; ++i)
391	{
392	ANPENDING *p = pendings + i;
393
394	if (p->w)	653	if (p->w)
395	{	654	{
396	p->w->pending = 0;	655	p->w->pending = 0;
397	p->w->cb (p->w, p->events);	656	p->w->cb (p->w, p->events);
398	}	657	}
399	}	658	}
400
401	pendingcnt = 0;
402	}	659	}
403		660
404	static void	661	static void
405	timers_reify ()	662	timers_reify (void)
406	{	663	{
407	while (timercnt && timers [0]->at <= now)	664	while (timercnt && timers [0]->at <= now)
408	{	665	{
409	struct ev_timer *w = timers [0];	666	struct ev_timer *w = timers [0];
410		667
411	/* first reschedule or stop timer */	668	/* first reschedule or stop timer */
412	if (w->repeat)	669	if (w->repeat)
413	{	670	{
		671	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
414	w->at = now + w->repeat;	672	w->at = now + w->repeat;
415	assert (("timer timeout in the past, negative repeat?", w->at > now));
416	downheap ((WT *)timers, timercnt, 0);	673	downheap ((WT *)timers, timercnt, 0);
417	}	674	}
418	else	675	else
419	evtimer_stop (w); /* nonrepeating: stop timer */	676	ev_timer_stop (w); /* nonrepeating: stop timer */
420		677
421	event ((W)w, EV_TIMEOUT);	678	event ((W)w, EV_TIMEOUT);
422	}	679	}
423	}	680	}
424		681
425	static void	682	static void
426	periodics_reify ()	683	periodics_reify (void)
427	{	684	{
428	while (periodiccnt && periodics [0]->at <= ev_now)	685	while (periodiccnt && periodics [0]->at <= ev_now)
429	{	686	{
430	struct ev_periodic *w = periodics [0];	687	struct ev_periodic *w = periodics [0];
431		688
432	/* first reschedule or stop timer */	689	/* first reschedule or stop timer */
433	if (w->interval)	690	if (w->interval)
434	{	691	{
435	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	692	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
436	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	693	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
437	downheap ((WT *)periodics, periodiccnt, 0);	694	downheap ((WT *)periodics, periodiccnt, 0);
438	}	695	}
439	else	696	else
440	evperiodic_stop (w); /* nonrepeating: stop timer */	697	ev_periodic_stop (w); /* nonrepeating: stop timer */
441		698
442	event ((W)w, EV_TIMEOUT);	699	event ((W)w, EV_PERIODIC);
443	}	700	}
444	}	701	}
445		702
446	static void	703	static void
447	periodics_reschedule (ev_tstamp diff)	704	periodics_reschedule (ev_tstamp diff)
…		…
457	{	714	{
458	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	715	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
459		716
460	if (fabs (diff) >= 1e-4)	717	if (fabs (diff) >= 1e-4)
461	{	718	{
462	evperiodic_stop (w);	719	ev_periodic_stop (w);
463	evperiodic_start (w);	720	ev_periodic_start (w);
464		721
465	i = 0; /* restart loop, inefficient, but time jumps should be rare */	722	i = 0; /* restart loop, inefficient, but time jumps should be rare */
466	}	723	}
467	}	724	}
468	}	725	}
469	}	726	}
470		727
471	static void	728	static int
		729	time_update_monotonic (void)
		730	{
		731	now = get_clock ();
		732
		733	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		734	{
		735	ev_now = now + diff;
		736	return 0;
		737	}
		738	else
		739	{
		740	now_floor = now;
		741	ev_now = ev_time ();
		742	return 1;
		743	}
		744	}
		745
		746	static void
472	time_update ()	747	time_update (void)
473	{	748	{
474	int i;	749	int i;
475		750
476	ev_now = ev_time ();	751	#if EV_USE_MONOTONIC
477
478	if (have_monotonic)	752	if (expect_true (have_monotonic))
479	{	753	{
480	ev_tstamp odiff = diff;	754	if (time_update_monotonic ())
481
482	for (i = 4; --i; ) /* loop a few times, before making important decisions */
483	{	755	{
484	now = get_clock ();	756	ev_tstamp odiff = diff;
		757
		758	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		759	{
485	diff = ev_now - now;	760	diff = ev_now - now;
486		761
487	if (fabs (odiff - diff) < MIN_TIMEJUMP)	762	if (fabs (odiff - diff) < MIN_TIMEJUMP)
488	return; /* all is well */	763	return; /* all is well */
489		764
490	ev_now = ev_time ();	765	ev_now = ev_time ();
		766	now = get_clock ();
		767	now_floor = now;
		768	}
		769
		770	periodics_reschedule (diff - odiff);
		771	/* no timer adjustment, as the monotonic clock doesn't jump */
491	}	772	}
492
493	periodics_reschedule (diff - odiff);
494	/* no timer adjustment, as the monotonic clock doesn't jump */
495	}	773	}
496	else	774	else
		775	#endif
497	{	776	{
		777	ev_now = ev_time ();
		778
498	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	779	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
499	{	780	{
500	periodics_reschedule (ev_now - now);	781	periodics_reschedule (ev_now - now);
501		782
502	/* adjust timers. this is easy, as the offset is the same for all */	783	/* adjust timers. this is easy, as the offset is the same for all */
503	for (i = 0; i < timercnt; ++i)	784	for (i = 0; i < timercnt; ++i)
…		…
511	int ev_loop_done;	792	int ev_loop_done;
512		793
513	void ev_loop (int flags)	794	void ev_loop (int flags)
514	{	795	{
515	double block;	796	double block;
516	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	797	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
517
518	if (checkcnt)
519	{
520	queue_events ((W *)checks, checkcnt, EV_CHECK);
521	call_pending ();
522	}
523		798
524	do	799	do
525	{	800	{
		801	/* queue check watchers (and execute them) */
		802	if (expect_false (preparecnt))
		803	{
		804	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		805	call_pending ();
		806	}
		807
526	/* update fd-related kernel structures */	808	/* update fd-related kernel structures */
527	fd_reify ();	809	fd_reify ();
528		810
529	/* calculate blocking time */	811	/* calculate blocking time */
530		812
531	/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */	813	/* we only need this for !monotonic clockor timers, but as we basically
		814	always have timers, we just calculate it always */
		815	#if EV_USE_MONOTONIC
		816	if (expect_true (have_monotonic))
		817	time_update_monotonic ();
		818	else
		819	#endif
		820	{
532	ev_now = ev_time ();	821	ev_now = ev_time ();
		822	now = ev_now;
		823	}
533		824
534	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	825	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
535	block = 0.;	826	block = 0.;
536	else	827	else
537	{	828	{
538	block = MAX_BLOCKTIME;	829	block = MAX_BLOCKTIME;
539		830
540	if (timercnt)	831	if (timercnt)
541	{	832	{
542	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	833	ev_tstamp to = timers [0]->at - now + method_fudge;
543	if (block > to) block = to;	834	if (block > to) block = to;
544	}	835	}
545		836
546	if (periodiccnt)	837	if (periodiccnt)
547	{	838	{
…		…
556		847
557	/* update ev_now, do magic */	848	/* update ev_now, do magic */
558	time_update ();	849	time_update ();
559		850
560	/* queue pending timers and reschedule them */	851	/* queue pending timers and reschedule them */
		852	timers_reify (); /* relative timers called last */
561	periodics_reify (); /* absolute timers first */	853	periodics_reify (); /* absolute timers called first */
562	timers_reify (); /* relative timers second */
563		854
564	/* queue idle watchers unless io or timers are pending */	855	/* queue idle watchers unless io or timers are pending */
565	if (!pendingcnt)	856	if (!pendingcnt)
566	queue_events ((W *)idles, idlecnt, EV_IDLE);	857	queue_events ((W *)idles, idlecnt, EV_IDLE);
567		858
568	/* queue check and possibly idle watchers */	859	/* queue check watchers, to be executed first */
		860	if (checkcnt)
569	queue_events ((W *)checks, checkcnt, EV_CHECK);	861	queue_events ((W *)checks, checkcnt, EV_CHECK);
570		862
571	call_pending ();	863	call_pending ();
572	}	864	}
573	while (!ev_loop_done);	865	while (!ev_loop_done);
574		866
…		…
599	head = &(*head)->next;	891	head = &(*head)->next;
600	}	892	}
601	}	893	}
602		894
603	static void	895	static void
		896	ev_clear_pending (W w)
		897	{
		898	if (w->pending)
		899	{
		900	pendings [ABSPRI (w)][w->pending - 1].w = 0;
		901	w->pending = 0;
		902	}
		903	}
		904
		905	static void
604	ev_start (W w, int active)	906	ev_start (W w, int active)
605	{	907	{
606	w->pending = 0;	908	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		909	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		910
607	w->active = active;	911	w->active = active;
608	}	912	}
609		913
610	static void	914	static void
611	ev_stop (W w)	915	ev_stop (W w)
612	{	916	{
613	if (w->pending)
614	pendings [w->pending - 1].w = 0;
615
616	w->active = 0;	917	w->active = 0;
617	}	918	}
618		919
619	/*****************************************************************************/	920	/*****************************************************************************/
620		921
621	void	922	void
622	evio_start (struct ev_io *w)	923	ev_io_start (struct ev_io *w)
623	{	924	{
		925	int fd = w->fd;
		926
624	if (ev_is_active (w))	927	if (ev_is_active (w))
625	return;	928	return;
626		929
627	int fd = w->fd;	930	assert (("ev_io_start called with negative fd", fd >= 0));
628		931
629	ev_start ((W)w, 1);	932	ev_start ((W)w, 1);
630	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	933	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
631	wlist_add ((WL *)&anfds[fd].head, (WL)w);	934	wlist_add ((WL *)&anfds[fd].head, (WL)w);
632		935
633	++fdchangecnt;	936	fd_change (fd);
634	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
635	fdchanges [fdchangecnt - 1] = fd;
636	}	937	}
637		938
638	void	939	void
639	evio_stop (struct ev_io *w)	940	ev_io_stop (struct ev_io *w)
640	{	941	{
		942	ev_clear_pending ((W)w);
641	if (!ev_is_active (w))	943	if (!ev_is_active (w))
642	return;	944	return;
643		945
644	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	946	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
645	ev_stop ((W)w);	947	ev_stop ((W)w);
646		948
647	++fdchangecnt;	949	fd_change (w->fd);
648	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
649	fdchanges [fdchangecnt - 1] = w->fd;
650	}	950	}
651		951
652
653	void	952	void
654	evtimer_start (struct ev_timer *w)	953	ev_timer_start (struct ev_timer *w)
655	{	954	{
656	if (ev_is_active (w))	955	if (ev_is_active (w))
657	return;	956	return;
658		957
659	w->at += now;	958	w->at += now;
660		959
661	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	960	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
662		961
663	ev_start ((W)w, ++timercnt);	962	ev_start ((W)w, ++timercnt);
664	array_needsize (timers, timermax, timercnt, );	963	array_needsize (timers, timermax, timercnt, );
665	timers [timercnt - 1] = w;	964	timers [timercnt - 1] = w;
666	upheap ((WT *)timers, timercnt - 1);	965	upheap ((WT *)timers, timercnt - 1);
667	}	966	}
668		967
669	void	968	void
670	evtimer_stop (struct ev_timer *w)	969	ev_timer_stop (struct ev_timer *w)
671	{	970	{
		971	ev_clear_pending ((W)w);
672	if (!ev_is_active (w))	972	if (!ev_is_active (w))
673	return;	973	return;
674		974
675	if (w->active < timercnt--)	975	if (w->active < timercnt--)
676	{	976	{
…		…
682		982
683	ev_stop ((W)w);	983	ev_stop ((W)w);
684	}	984	}
685		985
686	void	986	void
687	evtimer_again (struct ev_timer *w)	987	ev_timer_again (struct ev_timer *w)
688	{	988	{
689	if (ev_is_active (w))	989	if (ev_is_active (w))
690	{	990	{
691	if (w->repeat)	991	if (w->repeat)
692	{	992	{
693	w->at = now + w->repeat;	993	w->at = now + w->repeat;
694	downheap ((WT *)timers, timercnt, w->active - 1);	994	downheap ((WT *)timers, timercnt, w->active - 1);
695	}	995	}
696	else	996	else
697	evtimer_stop (w);	997	ev_timer_stop (w);
698	}	998	}
699	else if (w->repeat)	999	else if (w->repeat)
700	evtimer_start (w);	1000	ev_timer_start (w);
701	}	1001	}
702		1002
703	void	1003	void
704	evperiodic_start (struct ev_periodic *w)	1004	ev_periodic_start (struct ev_periodic *w)
705	{	1005	{
706	if (ev_is_active (w))	1006	if (ev_is_active (w))
707	return;	1007	return;
708		1008
709	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1009	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
710		1010
711	/* this formula differs from the one in periodic_reify because we do not always round up */	1011	/* this formula differs from the one in periodic_reify because we do not always round up */
712	if (w->interval)	1012	if (w->interval)
713	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1013	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
714		1014
…		…
717	periodics [periodiccnt - 1] = w;	1017	periodics [periodiccnt - 1] = w;
718	upheap ((WT *)periodics, periodiccnt - 1);	1018	upheap ((WT *)periodics, periodiccnt - 1);
719	}	1019	}
720		1020
721	void	1021	void
722	evperiodic_stop (struct ev_periodic *w)	1022	ev_periodic_stop (struct ev_periodic *w)
723	{	1023	{
		1024	ev_clear_pending ((W)w);
724	if (!ev_is_active (w))	1025	if (!ev_is_active (w))
725	return;	1026	return;
726		1027
727	if (w->active < periodiccnt--)	1028	if (w->active < periodiccnt--)
728	{	1029	{
…		…
731	}	1032	}
732		1033
733	ev_stop ((W)w);	1034	ev_stop ((W)w);
734	}	1035	}
735		1036
		1037	#ifndef SA_RESTART
		1038	# define SA_RESTART 0
		1039	#endif
		1040
736	void	1041	void
737	evsignal_start (struct ev_signal *w)	1042	ev_signal_start (struct ev_signal *w)
738	{	1043	{
739	if (ev_is_active (w))	1044	if (ev_is_active (w))
740	return;	1045	return;
		1046
		1047	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
741		1048
742	ev_start ((W)w, 1);	1049	ev_start ((W)w, 1);
743	array_needsize (signals, signalmax, w->signum, signals_init);	1050	array_needsize (signals, signalmax, w->signum, signals_init);
744	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1051	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
745		1052
746	if (!w->next)	1053	if (!w->next)
747	{	1054	{
748	struct sigaction sa;	1055	struct sigaction sa;
749	sa.sa_handler = sighandler;	1056	sa.sa_handler = sighandler;
750	sigfillset (&sa.sa_mask);	1057	sigfillset (&sa.sa_mask);
751	sa.sa_flags = 0;	1058	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
752	sigaction (w->signum, &sa, 0);	1059	sigaction (w->signum, &sa, 0);
753	}	1060	}
754	}	1061	}
755		1062
756	void	1063	void
757	evsignal_stop (struct ev_signal *w)	1064	ev_signal_stop (struct ev_signal *w)
758	{	1065	{
		1066	ev_clear_pending ((W)w);
759	if (!ev_is_active (w))	1067	if (!ev_is_active (w))
760	return;	1068	return;
761		1069
762	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1070	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
763	ev_stop ((W)w);	1071	ev_stop ((W)w);
764		1072
765	if (!signals [w->signum - 1].head)	1073	if (!signals [w->signum - 1].head)
766	signal (w->signum, SIG_DFL);	1074	signal (w->signum, SIG_DFL);
767	}	1075	}
768		1076
		1077	void
769	void evidle_start (struct ev_idle *w)	1078	ev_idle_start (struct ev_idle *w)
770	{	1079	{
771	if (ev_is_active (w))	1080	if (ev_is_active (w))
772	return;	1081	return;
773		1082
774	ev_start ((W)w, ++idlecnt);	1083	ev_start ((W)w, ++idlecnt);
775	array_needsize (idles, idlemax, idlecnt, );	1084	array_needsize (idles, idlemax, idlecnt, );
776	idles [idlecnt - 1] = w;	1085	idles [idlecnt - 1] = w;
777	}	1086	}
778		1087
		1088	void
779	void evidle_stop (struct ev_idle *w)	1089	ev_idle_stop (struct ev_idle *w)
780	{	1090	{
		1091	ev_clear_pending ((W)w);
		1092	if (ev_is_active (w))
		1093	return;
		1094
781	idles [w->active - 1] = idles [--idlecnt];	1095	idles [w->active - 1] = idles [--idlecnt];
782	ev_stop ((W)w);	1096	ev_stop ((W)w);
783	}	1097	}
784		1098
		1099	void
		1100	ev_prepare_start (struct ev_prepare *w)
		1101	{
		1102	if (ev_is_active (w))
		1103	return;
		1104
		1105	ev_start ((W)w, ++preparecnt);
		1106	array_needsize (prepares, preparemax, preparecnt, );
		1107	prepares [preparecnt - 1] = w;
		1108	}
		1109
		1110	void
		1111	ev_prepare_stop (struct ev_prepare *w)
		1112	{
		1113	ev_clear_pending ((W)w);
		1114	if (ev_is_active (w))
		1115	return;
		1116
		1117	prepares [w->active - 1] = prepares [--preparecnt];
		1118	ev_stop ((W)w);
		1119	}
		1120
		1121	void
785	void evcheck_start (struct ev_check *w)	1122	ev_check_start (struct ev_check *w)
786	{	1123	{
787	if (ev_is_active (w))	1124	if (ev_is_active (w))
788	return;	1125	return;
789		1126
790	ev_start ((W)w, ++checkcnt);	1127	ev_start ((W)w, ++checkcnt);
791	array_needsize (checks, checkmax, checkcnt, );	1128	array_needsize (checks, checkmax, checkcnt, );
792	checks [checkcnt - 1] = w;	1129	checks [checkcnt - 1] = w;
793	}	1130	}
794		1131
		1132	void
795	void evcheck_stop (struct ev_check *w)	1133	ev_check_stop (struct ev_check *w)
796	{	1134	{
		1135	ev_clear_pending ((W)w);
		1136	if (ev_is_active (w))
		1137	return;
		1138
797	checks [w->active - 1] = checks [--checkcnt];	1139	checks [w->active - 1] = checks [--checkcnt];
798	ev_stop ((W)w);	1140	ev_stop ((W)w);
799	}	1141	}
800		1142
		1143	void
		1144	ev_child_start (struct ev_child *w)
		1145	{
		1146	if (ev_is_active (w))
		1147	return;
		1148
		1149	ev_start ((W)w, 1);
		1150	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1151	}
		1152
		1153	void
		1154	ev_child_stop (struct ev_child *w)
		1155	{
		1156	ev_clear_pending ((W)w);
		1157	if (ev_is_active (w))
		1158	return;
		1159
		1160	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1161	ev_stop ((W)w);
		1162	}
		1163
801	/*****************************************************************************/	1164	/*****************************************************************************/
802		1165
		1166	struct ev_once
		1167	{
		1168	struct ev_io io;
		1169	struct ev_timer to;
		1170	void (cb)(int revents, void arg);
		1171	void *arg;
		1172	};
		1173
		1174	static void
		1175	once_cb (struct ev_once *once, int revents)
		1176	{
		1177	void (cb)(int revents, void arg) = once->cb;
		1178	void *arg = once->arg;
		1179
		1180	ev_io_stop (&once->io);
		1181	ev_timer_stop (&once->to);
		1182	free (once);
		1183
		1184	cb (revents, arg);
		1185	}
		1186
		1187	static void
		1188	once_cb_io (struct ev_io *w, int revents)
		1189	{
		1190	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
		1191	}
		1192
		1193	static void
		1194	once_cb_to (struct ev_timer *w, int revents)
		1195	{
		1196	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
		1197	}
		1198
		1199	void
		1200	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
		1201	{
		1202	struct ev_once *once = malloc (sizeof (struct ev_once));
		1203
		1204	if (!once)
		1205	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
		1206	else
		1207	{
		1208	once->cb = cb;
		1209	once->arg = arg;
		1210
		1211	ev_watcher_init (&once->io, once_cb_io);
		1212	if (fd >= 0)
		1213	{
		1214	ev_io_set (&once->io, fd, events);
		1215	ev_io_start (&once->io);
		1216	}
		1217
		1218	ev_watcher_init (&once->to, once_cb_to);
		1219	if (timeout >= 0.)
		1220	{
		1221	ev_timer_set (&once->to, timeout, 0.);
		1222	ev_timer_start (&once->to);
		1223	}
		1224	}
		1225	}
		1226
		1227	/*****************************************************************************/
		1228
803	#if 0	1229	#if 0
804		1230
805	struct ev_io wio;	1231	struct ev_io wio;
806		1232
807	static void	1233	static void
…		…
812		1238
813	static void	1239	static void
814	ocb (struct ev_timer *w, int revents)	1240	ocb (struct ev_timer *w, int revents)
815	{	1241	{
816	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1242	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
817	evtimer_stop (w);	1243	ev_timer_stop (w);
818	evtimer_start (w);	1244	ev_timer_start (w);
819	}	1245	}
820		1246
821	static void	1247	static void
822	scb (struct ev_signal *w, int revents)	1248	scb (struct ev_signal *w, int revents)
823	{	1249	{
824	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1250	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
825	evio_stop (&wio);	1251	ev_io_stop (&wio);
826	evio_start (&wio);	1252	ev_io_start (&wio);
827	}	1253	}
828		1254
829	static void	1255	static void
830	gcb (struct ev_signal *w, int revents)	1256	gcb (struct ev_signal *w, int revents)
831	{	1257	{
…		…
835		1261
836	int main (void)	1262	int main (void)
837	{	1263	{
838	ev_init (0);	1264	ev_init (0);
839		1265
840	evio_init (&wio, sin_cb, 0, EV_READ);	1266	ev_io_init (&wio, sin_cb, 0, EV_READ);
841	evio_start (&wio);	1267	ev_io_start (&wio);
842		1268
843	struct ev_timer t[10000];	1269	struct ev_timer t[10000];
844		1270
845	#if 0	1271	#if 0
846	int i;	1272	int i;
847	for (i = 0; i < 10000; ++i)	1273	for (i = 0; i < 10000; ++i)
848	{	1274	{
849	struct ev_timer *w = t + i;	1275	struct ev_timer *w = t + i;
850	evw_init (w, ocb, i);	1276	ev_watcher_init (w, ocb, i);
851	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);	1277	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
852	evtimer_start (w);	1278	ev_timer_start (w);
853	if (drand48 () < 0.5)	1279	if (drand48 () < 0.5)
854	evtimer_stop (w);	1280	ev_timer_stop (w);
855	}	1281	}
856	#endif	1282	#endif
857		1283
858	struct ev_timer t1;	1284	struct ev_timer t1;
859	evtimer_init (&t1, ocb, 5, 10);	1285	ev_timer_init (&t1, ocb, 5, 10);
860	evtimer_start (&t1);	1286	ev_timer_start (&t1);
861		1287
862	struct ev_signal sig;	1288	struct ev_signal sig;
863	evsignal_init (&sig, scb, SIGQUIT);	1289	ev_signal_init (&sig, scb, SIGQUIT);
864	evsignal_start (&sig);	1290	ev_signal_start (&sig);
865		1291
866	struct ev_check cw;	1292	struct ev_check cw;
867	evcheck_init (&cw, gcb);	1293	ev_check_init (&cw, gcb);
868	evcheck_start (&cw);	1294	ev_check_start (&cw);
869		1295
870	struct ev_idle iw;	1296	struct ev_idle iw;
871	evidle_init (&iw, gcb);	1297	ev_idle_init (&iw, gcb);
872	evidle_start (&iw);	1298	ev_idle_start (&iw);
873		1299
874	ev_loop (0);	1300	ev_loop (0);
875		1301
876	return 0;	1302	return 0;
877	}	1303	}

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Comparing libev/ev.c (file contents): Revision 1.15 by root, Wed Oct 31 11:56:34 2007 UTC vs. Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.15 by root, Wed Oct 31 11:56:34 2007 UTC vs.
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC