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

Comparing libev/ev.c (file contents):
Revision 1.16 by root, Wed Oct 31 13:57:34 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>
7		41
8	#include <stdio.h>	42	#include <stdio.h>
9		43
10	#include <assert.h>	44	#include <assert.h>
11	#include <errno.h>	45	#include <errno.h>
		46	#include <sys/types.h>
		47	#ifndef WIN32
		48	# include <sys/wait.h>
		49	#endif
12	#include <sys/time.h>	50	#include <sys/time.h>
13	#include <time.h>	51	#include <time.h>
14		52
15	#define HAVE_EPOLL 1	53	/**/
16		54
17	#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
18	# ifdef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
19	# define HAVE_MONOTONIC 1	83	# define EV_USE_MONOTONIC 0
20	# endif	84	#endif
21	#endif
22		85
23	#ifndef HAVE_SELECT
24	# define HAVE_SELECT 1
25	#endif
26
27	#ifndef HAVE_EPOLL
28	# define HAVE_EPOLL 0
29	#endif
30
31	#ifndef HAVE_REALTIME	86	#ifndef CLOCK_REALTIME
32	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	87	# undef EV_USE_REALTIME
		88	# define EV_USE_REALTIME 0
33	#endif	89	#endif
		90
		91	/**/
34		92
35	#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) */
36	#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 */
37		97
38	#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)
39		113
40	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
41	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
42	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
43		117
44	static ev_tstamp now, diff; /* monotonic clock */	118	static ev_tstamp now_floor, now, diff; /* monotonic clock */
45	ev_tstamp ev_now;	119	ev_tstamp ev_now;
46	int ev_method;	120	int ev_method;
47		121
48	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
49		123
…		…
54	/*****************************************************************************/	128	/*****************************************************************************/
55		129
56	ev_tstamp	130	ev_tstamp
57	ev_time (void)	131	ev_time (void)
58	{	132	{
59	#if HAVE_REALTIME	133	#if EV_USE_REALTIME
60	struct timespec ts;	134	struct timespec ts;
61	clock_gettime (CLOCK_REALTIME, &ts);	135	clock_gettime (CLOCK_REALTIME, &ts);
62	return ts.tv_sec + ts.tv_nsec * 1e-9;	136	return ts.tv_sec + ts.tv_nsec * 1e-9;
63	#else	137	#else
64	struct timeval tv;	138	struct timeval tv;
…		…
68	}	142	}
69		143
70	static ev_tstamp	144	static ev_tstamp
71	get_clock (void)	145	get_clock (void)
72	{	146	{
73	#if HAVE_MONOTONIC	147	#if EV_USE_MONOTONIC
74	if (have_monotonic)	148	if (expect_true (have_monotonic))
75	{	149	{
76	struct timespec ts;	150	struct timespec ts;
77	clock_gettime (CLOCK_MONOTONIC, &ts);	151	clock_gettime (CLOCK_MONOTONIC, &ts);
78	return ts.tv_sec + ts.tv_nsec * 1e-9;	152	return ts.tv_sec + ts.tv_nsec * 1e-9;
79	}	153	}
80	#endif	154	#endif
81		155
82	return ev_time ();	156	return ev_time ();
83	}	157	}
84		158
		159	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		160
85	#define array_needsize(base,cur,cnt,init) \	161	#define array_needsize(base,cur,cnt,init) \
86	if ((cnt) > cur) \	162	if (expect_false ((cnt) > cur)) \
87	{ \	163	{ \
88	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	\
89	base = realloc (base, sizeof (base) (newcnt)); \	171	base = realloc (base, sizeof (base) (newcnt)); \
90	init (base + cur, newcnt - cur); \	172	init (base + cur, newcnt - cur); \
91	cur = newcnt; \	173	cur = newcnt; \
92	}	174	}
93		175
94	/*****************************************************************************/	176	/*****************************************************************************/
95		177
96	typedef struct	178	typedef struct
97	{	179	{
98	struct ev_io *head;	180	struct ev_io *head;
99	unsigned char wev, rev; /* want, received event set */	181	unsigned char events;
		182	unsigned char reify;
100	} ANFD;	183	} ANFD;
101		184
102	static ANFD *anfds;	185	static ANFD *anfds;
103	static int anfdmax;	186	static int anfdmax;
104		187
105	static int *fdchanges;
106	static int fdchangemax, fdchangecnt;
107
108	static void	188	static void
109	anfds_init (ANFD *base, int count)	189	anfds_init (ANFD *base, int count)
110	{	190	{
111	while (count--)	191	while (count--)
112	{	192	{
113	base->head = 0;	193	base->head = 0;
114	base->wev = base->rev = EV_NONE;	194	base->events = EV_NONE;
		195	base->reify = 0;
		196
115	++base;	197	++base;
116	}	198	}
117	}	199	}
118		200
119	typedef struct	201	typedef struct
120	{	202	{
121	W w;	203	W w;
122	int events;	204	int events;
123	} ANPENDING;	205	} ANPENDING;
124		206
125	static ANPENDING *pendings;	207	static ANPENDING *pendings [NUMPRI];
126	static int pendingmax, pendingcnt;	208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
127		209
128	static void	210	static void
129	event (W w, int events)	211	event (W w, int events)
130	{	212	{
131	if (w->active)	213	if (w->pending)
132	{	214	{
133	w->pending = ++pendingcnt;
134	array_needsize (pendings, pendingmax, pendingcnt, );
135	pendings [pendingcnt - 1].w = w;
136	pendings [pendingcnt - 1].events = events;	215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		216	return;
137	}	217	}
		218
		219	w->pending = ++pendingcnt [ABSPRI (w)];
		220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
		221	pendings [ABSPRI (w)][w->pending - 1].w = w;
		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);
138	}	232	}
139		233
140	static void	234	static void
141	fd_event (int fd, int events)	235	fd_event (int fd, int events)
142	{	236	{
…		…
150	if (ev)	244	if (ev)
151	event ((W)w, ev);	245	event ((W)w, ev);
152	}	246	}
153	}	247	}
154		248
		249	/*****************************************************************************/
		250
		251	static int *fdchanges;
		252	static int fdchangemax, fdchangecnt;
		253
155	static void	254	static void
156	queue_events (W *events, int eventcnt, int type)	255	fd_reify (void)
157	{	256	{
158	int i;	257	int i;
159		258
160	for (i = 0; i < eventcnt; ++i)	259	for (i = 0; i < fdchangecnt; ++i)
161	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	}
162	}	333	}
163		334
164	/*****************************************************************************/	335	/*****************************************************************************/
165		336
166	static struct ev_timer **timers;	337	static struct ev_timer **timers;
…		…
213	/*****************************************************************************/	384	/*****************************************************************************/
214		385
215	typedef struct	386	typedef struct
216	{	387	{
217	struct ev_signal *head;	388	struct ev_signal *head;
218	sig_atomic_t gotsig;	389	sig_atomic_t volatile gotsig;
219	} ANSIG;	390	} ANSIG;
220		391
221	static ANSIG *signals;	392	static ANSIG *signals;
222	static int signalmax;	393	static int signalmax;
223		394
224	static int sigpipe [2];	395	static int sigpipe [2];
225	static sig_atomic_t gotsig;	396	static sig_atomic_t volatile gotsig;
226	static struct ev_io sigev;	397	static struct ev_io sigev;
227		398
228	static void	399	static void
229	signals_init (ANSIG *base, int count)	400	signals_init (ANSIG *base, int count)
230	{	401	{
231	while (count--)	402	while (count--)
232	{	403	{
233	base->head = 0;	404	base->head = 0;
234	base->gotsig = 0;	405	base->gotsig = 0;
		406
235	++base;	407	++base;
236	}	408	}
237	}	409	}
238		410
239	static void	411	static void
…		…
241	{	413	{
242	signals [signum - 1].gotsig = 1;	414	signals [signum - 1].gotsig = 1;
243		415
244	if (!gotsig)	416	if (!gotsig)
245	{	417	{
		418	int old_errno = errno;
246	gotsig = 1;	419	gotsig = 1;
247	write (sigpipe [1], &gotsig, 1);	420	write (sigpipe [1], &signum, 1);
		421	errno = old_errno;
248	}	422	}
249	}	423	}
250		424
251	static void	425	static void
252	sigcb (struct ev_io *iow, int revents)	426	sigcb (struct ev_io *iow, int revents)
253	{	427	{
254	struct ev_signal *w;	428	struct ev_signal *w;
255	int sig;	429	int signum;
256		430
		431	read (sigpipe [0], &revents, 1);
257	gotsig = 0;	432	gotsig = 0;
258	read (sigpipe [0], &revents, 1);
259		433
260	for (sig = signalmax; sig--; )	434	for (signum = signalmax; signum--; )
261	if (signals [sig].gotsig)	435	if (signals [signum].gotsig)
262	{	436	{
263	signals [sig].gotsig = 0;	437	signals [signum].gotsig = 0;
264		438
265	for (w = signals [sig].head; w; w = w->next)	439	for (w = signals [signum].head; w; w = w->next)
266	event ((W)w, EV_SIGNAL);	440	event ((W)w, EV_SIGNAL);
267	}	441	}
268	}	442	}
269		443
270	static void	444	static void
271	siginit (void)	445	siginit (void)
272	{	446	{
		447	#ifndef WIN32
273	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
274	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
275		450
276	/* rather than sort out wether we really need nb, set it */	451	/* rather than sort out wether we really need nb, set it */
277	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
278	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		454	#endif
279		455
280	evio_set (&sigev, sigpipe [0], EV_READ);	456	ev_io_set (&sigev, sigpipe [0], EV_READ);
281	evio_start (&sigev);	457	ev_io_start (&sigev);
282	}	458	}
283		459
284	/*****************************************************************************/	460	/*****************************************************************************/
285		461
286	static struct ev_idle **idles;	462	static struct ev_idle **idles;
287	static int idlemax, idlecnt;	463	static int idlemax, idlecnt;
288		464
		465	static struct ev_prepare **prepares;
		466	static int preparemax, preparecnt;
		467
289	static struct ev_check **checks;	468	static struct ev_check **checks;
290	static int checkmax, checkcnt;	469	static int checkmax, checkcnt;
291		470
292	/*****************************************************************************/	471	/*****************************************************************************/
293		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
294	#if HAVE_EPOLL	521	#if EV_USE_EPOLL
295	# include "ev_epoll.c"	522	# include "ev_epoll.c"
296	#endif	523	#endif
		524	#if EV_USE_POLL
		525	# include "ev_poll.c"
		526	#endif
297	#if HAVE_SELECT	527	#if EV_USE_SELECT
298	# include "ev_select.c"	528	# include "ev_select.c"
299	#endif	529	#endif
300		530
301	int ev_init (int flags)	531	int
		532	ev_version_major (void)
302	{	533	{
303	#if HAVE_MONOTONIC	534	return EV_VERSION_MAJOR;
304	{	535	}
305	struct timespec ts;
306	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
307	have_monotonic = 1;
308	}
309	#endif
310		536
311	ev_now = ev_time ();	537	int
312	now = get_clock ();	538	ev_version_minor (void)
313	diff = ev_now - now;	539	{
		540	return EV_VERSION_MINOR;
		541	}
314		542
315	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
316	return 0;	548	return 0;
317		549	#else
318	ev_method = EVMETHOD_NONE;	550	return getuid () != geteuid ()
319	#if HAVE_EPOLL	551	\|\| getgid () != getegid ();
320	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
321	#endif	552	#endif
322	#if HAVE_SELECT	553	}
323	if (ev_method == EVMETHOD_NONE) select_init (flags);
324	#endif
325		554
		555	int ev_init (int methods)
		556	{
326	if (ev_method)	557	if (!ev_method)
		558	{
		559	#if EV_USE_MONOTONIC
327	{	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	{
328	evw_init (&sigev, sigcb);	597	ev_watcher_init (&sigev, sigcb);
		598	ev_set_priority (&sigev, EV_MAXPRI);
329	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	}
330	}	607	}
331		608
332	return ev_method;	609	return ev_method;
333	}	610	}
334		611
335	/*****************************************************************************/	612	/*****************************************************************************/
336		613
337	void ev_prefork (void)	614	void
		615	ev_fork_prepare (void)
338	{	616	{
339	/* nop */	617	/* nop */
340	}	618	}
341		619
		620	void
342	void ev_postfork_parent (void)	621	ev_fork_parent (void)
343	{	622	{
344	/* nop */	623	/* nop */
345	}	624	}
346		625
		626	void
347	void ev_postfork_child (void)	627	ev_fork_child (void)
348	{	628	{
349	#if HAVE_EPOLL	629	#if EV_USE_EPOLL
350	if (ev_method == EVMETHOD_EPOLL)	630	if (ev_method == EVMETHOD_EPOLL)
351	epoll_postfork_child ();	631	epoll_postfork_child ();
352	#endif	632	#endif
353		633
354	evio_stop (&sigev);	634	ev_io_stop (&sigev);
355	close (sigpipe [0]);	635	close (sigpipe [0]);
356	close (sigpipe [1]);	636	close (sigpipe [1]);
357	pipe (sigpipe);	637	pipe (sigpipe);
358	siginit ();	638	siginit ();
359	}	639	}
360		640
361	/*****************************************************************************/	641	/*****************************************************************************/
362		642
363	static void	643	static void
364	fd_reify (void)	644	call_pending (void)
365	{	645	{
366	int i;	646	int pri;
367		647
368	for (i = 0; i < fdchangecnt; ++i)	648	for (pri = NUMPRI; pri--; )
369	{	649	while (pendingcnt [pri])
370	int fd = fdchanges [i];
371	ANFD *anfd = anfds + fd;
372	struct ev_io *w;
373
374	int wev = 0;
375
376	for (w = anfd->head; w; w = w->next)
377	wev \|= w->events;
378
379	if (anfd->wev != wev)
380	{	650	{
381	method_modify (fd, anfd->wev, wev);	651	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
382	anfd->wev = wev;
383	}
384	}
385		652
386	fdchangecnt = 0;
387	}
388
389	static void
390	call_pending ()
391	{
392	int i;
393
394	for (i = 0; i < pendingcnt; ++i)
395	{
396	ANPENDING *p = pendings + i;
397
398	if (p->w)	653	if (p->w)
399	{	654	{
400	p->w->pending = 0;	655	p->w->pending = 0;
401	p->w->cb (p->w, p->events);	656	p->w->cb (p->w, p->events);
402	}	657	}
403	}	658	}
404
405	pendingcnt = 0;
406	}	659	}
407		660
408	static void	661	static void
409	timers_reify ()	662	timers_reify (void)
410	{	663	{
411	while (timercnt && timers [0]->at <= now)	664	while (timercnt && timers [0]->at <= now)
412	{	665	{
413	struct ev_timer *w = timers [0];	666	struct ev_timer *w = timers [0];
414
415	event ((W)w, EV_TIMEOUT);
416		667
417	/* first reschedule or stop timer */	668	/* first reschedule or stop timer */
418	if (w->repeat)	669	if (w->repeat)
419	{	670	{
		671	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
420	w->at = now + w->repeat;	672	w->at = now + w->repeat;
421	assert (("timer timeout in the past, negative repeat?", w->at > now));
422	downheap ((WT *)timers, timercnt, 0);	673	downheap ((WT *)timers, timercnt, 0);
423	}	674	}
424	else	675	else
425	evtimer_stop (w); /* nonrepeating: stop timer */	676	ev_timer_stop (w); /* nonrepeating: stop timer */
426	}
427	}
428		677
		678	event ((W)w, EV_TIMEOUT);
		679	}
		680	}
		681
429	static void	682	static void
430	periodics_reify ()	683	periodics_reify (void)
431	{	684	{
432	while (periodiccnt && periodics [0]->at <= ev_now)	685	while (periodiccnt && periodics [0]->at <= ev_now)
433	{	686	{
434	struct ev_periodic *w = periodics [0];	687	struct ev_periodic *w = periodics [0];
435		688
436	/* first reschedule or stop timer */	689	/* first reschedule or stop timer */
437	if (w->interval)	690	if (w->interval)
438	{	691	{
439	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;
440	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));
441	downheap ((WT *)periodics, periodiccnt, 0);	694	downheap ((WT *)periodics, periodiccnt, 0);
442	}	695	}
443	else	696	else
444	evperiodic_stop (w); /* nonrepeating: stop timer */	697	ev_periodic_stop (w); /* nonrepeating: stop timer */
445		698
446	event ((W)w, EV_TIMEOUT);	699	event ((W)w, EV_PERIODIC);
447	}	700	}
448	}	701	}
449		702
450	static void	703	static void
451	periodics_reschedule (ev_tstamp diff)	704	periodics_reschedule (ev_tstamp diff)
…		…
461	{	714	{
462	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;
463		716
464	if (fabs (diff) >= 1e-4)	717	if (fabs (diff) >= 1e-4)
465	{	718	{
466	evperiodic_stop (w);	719	ev_periodic_stop (w);
467	evperiodic_start (w);	720	ev_periodic_start (w);
468		721
469	i = 0; /* restart loop, inefficient, but time jumps should be rare */	722	i = 0; /* restart loop, inefficient, but time jumps should be rare */
470	}	723	}
471	}	724	}
472	}	725	}
473	}	726	}
474		727
475	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
476	time_update ()	747	time_update (void)
477	{	748	{
478	int i;	749	int i;
479		750
480	ev_now = ev_time ();	751	#if EV_USE_MONOTONIC
481
482	if (have_monotonic)	752	if (expect_true (have_monotonic))
483	{	753	{
484	ev_tstamp odiff = diff;	754	if (time_update_monotonic ())
485
486	for (i = 4; --i; ) /* loop a few times, before making important decisions */
487	{	755	{
488	now = get_clock ();	756	ev_tstamp odiff = diff;
		757
		758	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		759	{
489	diff = ev_now - now;	760	diff = ev_now - now;
490		761
491	if (fabs (odiff - diff) < MIN_TIMEJUMP)	762	if (fabs (odiff - diff) < MIN_TIMEJUMP)
492	return; /* all is well */	763	return; /* all is well */
493		764
494	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 */
495	}	772	}
496
497	periodics_reschedule (diff - odiff);
498	/* no timer adjustment, as the monotonic clock doesn't jump */
499	}	773	}
500	else	774	else
		775	#endif
501	{	776	{
		777	ev_now = ev_time ();
		778
502	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))
503	{	780	{
504	periodics_reschedule (ev_now - now);	781	periodics_reschedule (ev_now - now);
505		782
506	/* 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 */
507	for (i = 0; i < timercnt; ++i)	784	for (i = 0; i < timercnt; ++i)
…		…
515	int ev_loop_done;	792	int ev_loop_done;
516		793
517	void ev_loop (int flags)	794	void ev_loop (int flags)
518	{	795	{
519	double block;	796	double block;
520	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	797	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
521
522	if (checkcnt)
523	{
524	queue_events ((W *)checks, checkcnt, EV_CHECK);
525	call_pending ();
526	}
527		798
528	do	799	do
529	{	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
530	/* update fd-related kernel structures */	808	/* update fd-related kernel structures */
531	fd_reify ();	809	fd_reify ();
532		810
533	/* calculate blocking time */	811	/* calculate blocking time */
534		812
535	/* 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	{
536	ev_now = ev_time ();	821	ev_now = ev_time ();
		822	now = ev_now;
		823	}
537		824
538	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	825	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
539	block = 0.;	826	block = 0.;
540	else	827	else
541	{	828	{
542	block = MAX_BLOCKTIME;	829	block = MAX_BLOCKTIME;
543		830
544	if (timercnt)	831	if (timercnt)
545	{	832	{
546	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	833	ev_tstamp to = timers [0]->at - now + method_fudge;
547	if (block > to) block = to;	834	if (block > to) block = to;
548	}	835	}
549		836
550	if (periodiccnt)	837	if (periodiccnt)
551	{	838	{
…		…
560		847
561	/* update ev_now, do magic */	848	/* update ev_now, do magic */
562	time_update ();	849	time_update ();
563		850
564	/* queue pending timers and reschedule them */	851	/* queue pending timers and reschedule them */
		852	timers_reify (); /* relative timers called last */
565	periodics_reify (); /* absolute timers first */	853	periodics_reify (); /* absolute timers called first */
566	timers_reify (); /* relative timers second */
567		854
568	/* queue idle watchers unless io or timers are pending */	855	/* queue idle watchers unless io or timers are pending */
569	if (!pendingcnt)	856	if (!pendingcnt)
570	queue_events ((W *)idles, idlecnt, EV_IDLE);	857	queue_events ((W *)idles, idlecnt, EV_IDLE);
571		858
572	/* queue check and possibly idle watchers */	859	/* queue check watchers, to be executed first */
		860	if (checkcnt)
573	queue_events ((W *)checks, checkcnt, EV_CHECK);	861	queue_events ((W *)checks, checkcnt, EV_CHECK);
574		862
575	call_pending ();	863	call_pending ();
576	}	864	}
577	while (!ev_loop_done);	865	while (!ev_loop_done);
578		866
…		…
603	head = &(*head)->next;	891	head = &(*head)->next;
604	}	892	}
605	}	893	}
606		894
607	static void	895	static void
608	ev_clear (W w)	896	ev_clear_pending (W w)
609	{	897	{
610	if (w->pending)	898	if (w->pending)
611	{	899	{
612	pendings [w->pending - 1].w = 0;	900	pendings [ABSPRI (w)][w->pending - 1].w = 0;
613	w->pending = 0;	901	w->pending = 0;
614	}	902	}
615	}	903	}
616		904
617	static void	905	static void
618	ev_start (W w, int active)	906	ev_start (W w, int active)
619	{	907	{
		908	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		909	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		910
620	w->active = active;	911	w->active = active;
621	}	912	}
622		913
623	static void	914	static void
624	ev_stop (W w)	915	ev_stop (W w)
…		…
627	}	918	}
628		919
629	/*****************************************************************************/	920	/*****************************************************************************/
630		921
631	void	922	void
632	evio_start (struct ev_io *w)	923	ev_io_start (struct ev_io *w)
633	{	924	{
		925	int fd = w->fd;
		926
634	if (ev_is_active (w))	927	if (ev_is_active (w))
635	return;	928	return;
636		929
637	int fd = w->fd;	930	assert (("ev_io_start called with negative fd", fd >= 0));
638		931
639	ev_start ((W)w, 1);	932	ev_start ((W)w, 1);
640	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	933	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
641	wlist_add ((WL *)&anfds[fd].head, (WL)w);	934	wlist_add ((WL *)&anfds[fd].head, (WL)w);
642		935
643	++fdchangecnt;	936	fd_change (fd);
644	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
645	fdchanges [fdchangecnt - 1] = fd;
646	}	937	}
647		938
648	void	939	void
649	evio_stop (struct ev_io *w)	940	ev_io_stop (struct ev_io *w)
650	{	941	{
651	ev_clear ((W)w);	942	ev_clear_pending ((W)w);
652	if (!ev_is_active (w))	943	if (!ev_is_active (w))
653	return;	944	return;
654		945
655	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	946	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
656	ev_stop ((W)w);	947	ev_stop ((W)w);
657		948
658	++fdchangecnt;	949	fd_change (w->fd);
659	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
660	fdchanges [fdchangecnt - 1] = w->fd;
661	}	950	}
662		951
663	void	952	void
664	evtimer_start (struct ev_timer *w)	953	ev_timer_start (struct ev_timer *w)
665	{	954	{
666	if (ev_is_active (w))	955	if (ev_is_active (w))
667	return;	956	return;
668		957
669	w->at += now;	958	w->at += now;
670		959
671	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.));
672		961
673	ev_start ((W)w, ++timercnt);	962	ev_start ((W)w, ++timercnt);
674	array_needsize (timers, timermax, timercnt, );	963	array_needsize (timers, timermax, timercnt, );
675	timers [timercnt - 1] = w;	964	timers [timercnt - 1] = w;
676	upheap ((WT *)timers, timercnt - 1);	965	upheap ((WT *)timers, timercnt - 1);
677	}	966	}
678		967
679	void	968	void
680	evtimer_stop (struct ev_timer *w)	969	ev_timer_stop (struct ev_timer *w)
681	{	970	{
682	ev_clear ((W)w);	971	ev_clear_pending ((W)w);
683	if (!ev_is_active (w))	972	if (!ev_is_active (w))
684	return;	973	return;
685		974
686	if (w->active < timercnt--)	975	if (w->active < timercnt--)
687	{	976	{
…		…
693		982
694	ev_stop ((W)w);	983	ev_stop ((W)w);
695	}	984	}
696		985
697	void	986	void
698	evtimer_again (struct ev_timer *w)	987	ev_timer_again (struct ev_timer *w)
699	{	988	{
700	if (ev_is_active (w))	989	if (ev_is_active (w))
701	{	990	{
702	if (w->repeat)	991	if (w->repeat)
703	{	992	{
704	w->at = now + w->repeat;	993	w->at = now + w->repeat;
705	downheap ((WT *)timers, timercnt, w->active - 1);	994	downheap ((WT *)timers, timercnt, w->active - 1);
706	}	995	}
707	else	996	else
708	evtimer_stop (w);	997	ev_timer_stop (w);
709	}	998	}
710	else if (w->repeat)	999	else if (w->repeat)
711	evtimer_start (w);	1000	ev_timer_start (w);
712	}	1001	}
713		1002
714	void	1003	void
715	evperiodic_start (struct ev_periodic *w)	1004	ev_periodic_start (struct ev_periodic *w)
716	{	1005	{
717	if (ev_is_active (w))	1006	if (ev_is_active (w))
718	return;	1007	return;
719		1008
720	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.));
721		1010
722	/* 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 */
723	if (w->interval)	1012	if (w->interval)
724	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1013	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
725		1014
…		…
728	periodics [periodiccnt - 1] = w;	1017	periodics [periodiccnt - 1] = w;
729	upheap ((WT *)periodics, periodiccnt - 1);	1018	upheap ((WT *)periodics, periodiccnt - 1);
730	}	1019	}
731		1020
732	void	1021	void
733	evperiodic_stop (struct ev_periodic *w)	1022	ev_periodic_stop (struct ev_periodic *w)
734	{	1023	{
735	ev_clear ((W)w);	1024	ev_clear_pending ((W)w);
736	if (!ev_is_active (w))	1025	if (!ev_is_active (w))
737	return;	1026	return;
738		1027
739	if (w->active < periodiccnt--)	1028	if (w->active < periodiccnt--)
740	{	1029	{
…		…
743	}	1032	}
744		1033
745	ev_stop ((W)w);	1034	ev_stop ((W)w);
746	}	1035	}
747		1036
		1037	#ifndef SA_RESTART
		1038	# define SA_RESTART 0
		1039	#endif
		1040
748	void	1041	void
749	evsignal_start (struct ev_signal *w)	1042	ev_signal_start (struct ev_signal *w)
750	{	1043	{
751	if (ev_is_active (w))	1044	if (ev_is_active (w))
752	return;	1045	return;
		1046
		1047	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
753		1048
754	ev_start ((W)w, 1);	1049	ev_start ((W)w, 1);
755	array_needsize (signals, signalmax, w->signum, signals_init);	1050	array_needsize (signals, signalmax, w->signum, signals_init);
756	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1051	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
757		1052
758	if (!w->next)	1053	if (!w->next)
759	{	1054	{
760	struct sigaction sa;	1055	struct sigaction sa;
761	sa.sa_handler = sighandler;	1056	sa.sa_handler = sighandler;
762	sigfillset (&sa.sa_mask);	1057	sigfillset (&sa.sa_mask);
763	sa.sa_flags = 0;	1058	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
764	sigaction (w->signum, &sa, 0);	1059	sigaction (w->signum, &sa, 0);
765	}	1060	}
766	}	1061	}
767		1062
768	void	1063	void
769	evsignal_stop (struct ev_signal *w)	1064	ev_signal_stop (struct ev_signal *w)
770	{	1065	{
771	ev_clear ((W)w);	1066	ev_clear_pending ((W)w);
772	if (!ev_is_active (w))	1067	if (!ev_is_active (w))
773	return;	1068	return;
774		1069
775	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1070	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
776	ev_stop ((W)w);	1071	ev_stop ((W)w);
777		1072
778	if (!signals [w->signum - 1].head)	1073	if (!signals [w->signum - 1].head)
779	signal (w->signum, SIG_DFL);	1074	signal (w->signum, SIG_DFL);
780	}	1075	}
781		1076
		1077	void
782	void evidle_start (struct ev_idle *w)	1078	ev_idle_start (struct ev_idle *w)
783	{	1079	{
784	if (ev_is_active (w))	1080	if (ev_is_active (w))
785	return;	1081	return;
786		1082
787	ev_start ((W)w, ++idlecnt);	1083	ev_start ((W)w, ++idlecnt);
788	array_needsize (idles, idlemax, idlecnt, );	1084	array_needsize (idles, idlemax, idlecnt, );
789	idles [idlecnt - 1] = w;	1085	idles [idlecnt - 1] = w;
790	}	1086	}
791		1087
		1088	void
792	void evidle_stop (struct ev_idle *w)	1089	ev_idle_stop (struct ev_idle *w)
793	{	1090	{
794	ev_clear ((W)w);	1091	ev_clear_pending ((W)w);
795	if (ev_is_active (w))	1092	if (ev_is_active (w))
796	return;	1093	return;
797		1094
798	idles [w->active - 1] = idles [--idlecnt];	1095	idles [w->active - 1] = idles [--idlecnt];
799	ev_stop ((W)w);	1096	ev_stop ((W)w);
800	}	1097	}
801		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
802	void evcheck_start (struct ev_check *w)	1122	ev_check_start (struct ev_check *w)
803	{	1123	{
804	if (ev_is_active (w))	1124	if (ev_is_active (w))
805	return;	1125	return;
806		1126
807	ev_start ((W)w, ++checkcnt);	1127	ev_start ((W)w, ++checkcnt);
808	array_needsize (checks, checkmax, checkcnt, );	1128	array_needsize (checks, checkmax, checkcnt, );
809	checks [checkcnt - 1] = w;	1129	checks [checkcnt - 1] = w;
810	}	1130	}
811		1131
		1132	void
812	void evcheck_stop (struct ev_check *w)	1133	ev_check_stop (struct ev_check *w)
813	{	1134	{
814	ev_clear ((W)w);	1135	ev_clear_pending ((W)w);
815	if (ev_is_active (w))	1136	if (ev_is_active (w))
816	return;	1137	return;
817		1138
818	checks [w->active - 1] = checks [--checkcnt];	1139	checks [w->active - 1] = checks [--checkcnt];
		1140	ev_stop ((W)w);
		1141	}
		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);
819	ev_stop ((W)w);	1161	ev_stop ((W)w);
820	}	1162	}
821		1163
822	/*****************************************************************************/	1164	/*****************************************************************************/
823		1165
…		…
833	once_cb (struct ev_once *once, int revents)	1175	once_cb (struct ev_once *once, int revents)
834	{	1176	{
835	void (cb)(int revents, void arg) = once->cb;	1177	void (cb)(int revents, void arg) = once->cb;
836	void *arg = once->arg;	1178	void *arg = once->arg;
837		1179
838	evio_stop (&once->io);	1180	ev_io_stop (&once->io);
839	evtimer_stop (&once->to);	1181	ev_timer_stop (&once->to);
840	free (once);	1182	free (once);
841		1183
842	cb (revents, arg);	1184	cb (revents, arg);
843	}	1185	}
844		1186
…		…
858	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1200	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
859	{	1201	{
860	struct ev_once *once = malloc (sizeof (struct ev_once));	1202	struct ev_once *once = malloc (sizeof (struct ev_once));
861		1203
862	if (!once)	1204	if (!once)
863	cb (EV_ERROR, arg);	1205	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
864	else	1206	else
865	{	1207	{
866	once->cb = cb;	1208	once->cb = cb;
867	once->arg = arg;	1209	once->arg = arg;
868		1210
869	evw_init (&once->io, once_cb_io);	1211	ev_watcher_init (&once->io, once_cb_io);
870
871	if (fd >= 0)	1212	if (fd >= 0)
872	{	1213	{
873	evio_set (&once->io, fd, events);	1214	ev_io_set (&once->io, fd, events);
874	evio_start (&once->io);	1215	ev_io_start (&once->io);
875	}	1216	}
876		1217
877	evw_init (&once->to, once_cb_to);	1218	ev_watcher_init (&once->to, once_cb_to);
878
879	if (timeout >= 0.)	1219	if (timeout >= 0.)
880	{	1220	{
881	evtimer_set (&once->to, timeout, 0.);	1221	ev_timer_set (&once->to, timeout, 0.);
882	evtimer_start (&once->to);	1222	ev_timer_start (&once->to);
883	}	1223	}
884	}	1224	}
885	}	1225	}
886		1226
887	/*****************************************************************************/	1227	/*****************************************************************************/
…		…
898		1238
899	static void	1239	static void
900	ocb (struct ev_timer *w, int revents)	1240	ocb (struct ev_timer *w, int revents)
901	{	1241	{
902	//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);
903	evtimer_stop (w);	1243	ev_timer_stop (w);
904	evtimer_start (w);	1244	ev_timer_start (w);
905	}	1245	}
906		1246
907	static void	1247	static void
908	scb (struct ev_signal *w, int revents)	1248	scb (struct ev_signal *w, int revents)
909	{	1249	{
910	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1250	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
911	evio_stop (&wio);	1251	ev_io_stop (&wio);
912	evio_start (&wio);	1252	ev_io_start (&wio);
913	}	1253	}
914		1254
915	static void	1255	static void
916	gcb (struct ev_signal *w, int revents)	1256	gcb (struct ev_signal *w, int revents)
917	{	1257	{
…		…
921		1261
922	int main (void)	1262	int main (void)
923	{	1263	{
924	ev_init (0);	1264	ev_init (0);
925		1265
926	evio_init (&wio, sin_cb, 0, EV_READ);	1266	ev_io_init (&wio, sin_cb, 0, EV_READ);
927	evio_start (&wio);	1267	ev_io_start (&wio);
928		1268
929	struct ev_timer t[10000];	1269	struct ev_timer t[10000];
930		1270
931	#if 0	1271	#if 0
932	int i;	1272	int i;
933	for (i = 0; i < 10000; ++i)	1273	for (i = 0; i < 10000; ++i)
934	{	1274	{
935	struct ev_timer *w = t + i;	1275	struct ev_timer *w = t + i;
936	evw_init (w, ocb, i);	1276	ev_watcher_init (w, ocb, i);
937	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);	1277	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
938	evtimer_start (w);	1278	ev_timer_start (w);
939	if (drand48 () < 0.5)	1279	if (drand48 () < 0.5)
940	evtimer_stop (w);	1280	ev_timer_stop (w);
941	}	1281	}
942	#endif	1282	#endif
943		1283
944	struct ev_timer t1;	1284	struct ev_timer t1;
945	evtimer_init (&t1, ocb, 5, 10);	1285	ev_timer_init (&t1, ocb, 5, 10);
946	evtimer_start (&t1);	1286	ev_timer_start (&t1);
947		1287
948	struct ev_signal sig;	1288	struct ev_signal sig;
949	evsignal_init (&sig, scb, SIGQUIT);	1289	ev_signal_init (&sig, scb, SIGQUIT);
950	evsignal_start (&sig);	1290	ev_signal_start (&sig);
951		1291
952	struct ev_check cw;	1292	struct ev_check cw;
953	evcheck_init (&cw, gcb);	1293	ev_check_init (&cw, gcb);
954	evcheck_start (&cw);	1294	ev_check_start (&cw);
955		1295
956	struct ev_idle iw;	1296	struct ev_idle iw;
957	evidle_init (&iw, gcb);	1297	ev_idle_init (&iw, gcb);
958	evidle_start (&iw);	1298	ev_idle_start (&iw);
959		1299
960	ev_loop (0);	1300	ev_loop (0);
961		1301
962	return 0;	1302	return 0;
963	}	1303	}

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Comparing libev/ev.c (file contents): Revision 1.16 by root, Wed Oct 31 13:57:34 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 1.16 by root, Wed Oct 31 13:57:34 2007 UTC vs.
Revision 1.49 by root, Sat Nov 3 16:16:58 2007 UTC