[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 1.50 by root, Sat Nov 3 19:41:55 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	#ifndef EV_STANDALONE
		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_watcher_list *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	{
139	ANFD *anfd = anfds + fd;	237	ANFD *anfd = anfds + fd;
140	struct ev_io *w;	238	struct ev_io *w;
141		239
142	for (w = anfd->head; w; w = w->next)	240	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
143	{	241	{
144	int ev = w->events & events;	242	int ev = w->events & events;
145		243
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 = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)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	while ((w = (struct ev_io *)anfds [fd].head))
		301	{
		302	ev_io_stop (w);
		303	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		304	}
		305	}
		306
		307	/* called on EBADF to verify fds */
		308	static void
		309	fd_ebadf (void)
		310	{
		311	int fd;
		312
		313	for (fd = 0; fd < anfdmax; ++fd)
		314	if (anfds [fd].events)
		315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		316	fd_kill (fd);
		317	}
		318
		319	/* called on ENOMEM in select/poll to kill some fds and retry */
		320	static void
		321	fd_enomem (void)
		322	{
		323	int fd = anfdmax;
		324
		325	while (fd--)
		326	if (anfds [fd].events)
		327	{
		328	close (fd);
		329	fd_kill (fd);
		330	return;
		331	}
158	}	332	}
159		333
160	/*****************************************************************************/	334	/*****************************************************************************/
161		335
162	static struct ev_timer **timers;	336	static struct ev_timer **timers;
…		…
208		382
209	/*****************************************************************************/	383	/*****************************************************************************/
210		384
211	typedef struct	385	typedef struct
212	{	386	{
213	struct ev_signal *head;	387	struct ev_watcher_list *head;
214	sig_atomic_t gotsig;	388	sig_atomic_t volatile gotsig;
215	} ANSIG;	389	} ANSIG;
216		390
217	static ANSIG *signals;	391	static ANSIG *signals;
218	static int signalmax;	392	static int signalmax;
219		393
220	static int sigpipe [2];	394	static int sigpipe [2];
221	static sig_atomic_t gotsig;	395	static sig_atomic_t volatile gotsig;
222	static struct ev_io sigev;	396	static struct ev_io sigev;
223		397
224	static void	398	static void
225	signals_init (ANSIG *base, int count)	399	signals_init (ANSIG *base, int count)
226	{	400	{
227	while (count--)	401	while (count--)
228	{	402	{
229	base->head = 0;	403	base->head = 0;
230	base->gotsig = 0;	404	base->gotsig = 0;
		405
231	++base;	406	++base;
232	}	407	}
233	}	408	}
234		409
235	static void	410	static void
…		…
237	{	412	{
238	signals [signum - 1].gotsig = 1;	413	signals [signum - 1].gotsig = 1;
239		414
240	if (!gotsig)	415	if (!gotsig)
241	{	416	{
		417	int old_errno = errno;
242	gotsig = 1;	418	gotsig = 1;
243	write (sigpipe [1], &gotsig, 1);	419	write (sigpipe [1], &signum, 1);
		420	errno = old_errno;
244	}	421	}
245	}	422	}
246		423
247	static void	424	static void
248	sigcb (struct ev_io *iow, int revents)	425	sigcb (struct ev_io *iow, int revents)
249	{	426	{
250	struct ev_signal *w;	427	struct ev_watcher_list *w;
251	int sig;	428	int signum;
252		429
		430	read (sigpipe [0], &revents, 1);
253	gotsig = 0;	431	gotsig = 0;
254	read (sigpipe [0], &revents, 1);
255		432
256	for (sig = signalmax; sig--; )	433	for (signum = signalmax; signum--; )
257	if (signals [sig].gotsig)	434	if (signals [signum].gotsig)
258	{	435	{
259	signals [sig].gotsig = 0;	436	signals [signum].gotsig = 0;
260		437
261	for (w = signals [sig].head; w; w = w->next)	438	for (w = signals [signum].head; w; w = w->next)
262	event ((W)w, EV_SIGNAL);	439	event ((W)w, EV_SIGNAL);
263	}	440	}
264	}	441	}
265		442
266	static void	443	static void
267	siginit (void)	444	siginit (void)
268	{	445	{
		446	#ifndef WIN32
269	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
270	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
271		449
272	/* rather than sort out wether we really need nb, set it */	450	/* rather than sort out wether we really need nb, set it */
273	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
274	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		453	#endif
275		454
276	evio_set (&sigev, sigpipe [0], EV_READ);	455	ev_io_set (&sigev, sigpipe [0], EV_READ);
277	evio_start (&sigev);	456	ev_io_start (&sigev);
278	}	457	}
279		458
280	/*****************************************************************************/	459	/*****************************************************************************/
281		460
282	static struct ev_idle **idles;	461	static struct ev_idle **idles;
283	static int idlemax, idlecnt;	462	static int idlemax, idlecnt;
284		463
		464	static struct ev_prepare **prepares;
		465	static int preparemax, preparecnt;
		466
285	static struct ev_check **checks;	467	static struct ev_check **checks;
286	static int checkmax, checkcnt;	468	static int checkmax, checkcnt;
287		469
288	/*****************************************************************************/	470	/*****************************************************************************/
289		471
		472	static struct ev_child *childs [PID_HASHSIZE];
		473	static struct ev_signal childev;
		474
		475	#ifndef WIN32
		476
		477	#ifndef WCONTINUED
		478	# define WCONTINUED 0
		479	#endif
		480
		481	static void
		482	child_reap (struct ev_signal *sw, int chain, int pid, int status)
		483	{
		484	struct ev_child *w;
		485
		486	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		487	if (w->pid == pid \|\| !w->pid)
		488	{
		489	w->priority = sw->priority; /* need to do it now */
		490	w->rpid = pid;
		491	w->rstatus = status;
		492	event ((W)w, EV_CHILD);
		493	}
		494	}
		495
		496	static void
		497	childcb (struct ev_signal *sw, int revents)
		498	{
		499	int pid, status;
		500
		501	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
		502	{
		503	/* make sure we are called again until all childs have been reaped */
		504	event ((W)sw, EV_SIGNAL);
		505
		506	child_reap (sw, pid, pid, status);
		507	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		508	}
		509	}
		510
		511	#endif
		512
		513	/*****************************************************************************/
		514
		515	#if EV_USE_KQUEUE
		516	# include "ev_kqueue.c"
		517	#endif
290	#if HAVE_EPOLL	518	#if EV_USE_EPOLL
291	# include "ev_epoll.c"	519	# include "ev_epoll.c"
292	#endif	520	#endif
		521	#if EV_USE_POLL
		522	# include "ev_poll.c"
		523	#endif
293	#if HAVE_SELECT	524	#if EV_USE_SELECT
294	# include "ev_select.c"	525	# include "ev_select.c"
295	#endif	526	#endif
296		527
297	int ev_init (int flags)	528	int
		529	ev_version_major (void)
298	{	530	{
299	#if HAVE_MONOTONIC	531	return EV_VERSION_MAJOR;
300	{	532	}
301	struct timespec ts;
302	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
303	have_monotonic = 1;
304	}
305	#endif
306		533
307	ev_now = ev_time ();	534	int
308	now = get_clock ();	535	ev_version_minor (void)
309	diff = ev_now - now;	536	{
		537	return EV_VERSION_MINOR;
		538	}
310		539
311	if (pipe (sigpipe))	540	/* return true if we are running with elevated privileges and should ignore env variables */
		541	static int
		542	enable_secure ()
		543	{
		544	#ifdef WIN32
312	return 0;	545	return 0;
313		546	#else
314	ev_method = EVMETHOD_NONE;	547	return getuid () != geteuid ()
315	#if HAVE_EPOLL	548	\|\| getgid () != getegid ();
316	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
317	#endif	549	#endif
318	#if HAVE_SELECT	550	}
319	if (ev_method == EVMETHOD_NONE) select_init (flags);
320	#endif
321		551
		552	int ev_init (int methods)
		553	{
322	if (ev_method)	554	if (!ev_method)
		555	{
		556	#if EV_USE_MONOTONIC
323	{	557	{
		558	struct timespec ts;
		559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		560	have_monotonic = 1;
		561	}
		562	#endif
		563
		564	ev_now = ev_time ();
		565	now = get_clock ();
		566	now_floor = now;
		567	diff = ev_now - now;
		568
		569	if (pipe (sigpipe))
		570	return 0;
		571
		572	if (methods == EVMETHOD_AUTO)
		573	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		574	methods = atoi (getenv ("LIBEV_METHODS"));
		575	else
		576	methods = EVMETHOD_ANY;
		577
		578	ev_method = 0;
		579	#if EV_USE_KQUEUE
		580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);
		581	#endif
		582	#if EV_USE_EPOLL
		583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
		584	#endif
		585	#if EV_USE_POLL
		586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		587	#endif
		588	#if EV_USE_SELECT
		589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
		590	#endif
		591
		592	if (ev_method)
		593	{
324	evw_init (&sigev, sigcb);	594	ev_watcher_init (&sigev, sigcb);
		595	ev_set_priority (&sigev, EV_MAXPRI);
325	siginit ();	596	siginit ();
		597
		598	#ifndef WIN32
		599	ev_signal_init (&childev, childcb, SIGCHLD);
		600	ev_set_priority (&childev, EV_MAXPRI);
		601	ev_signal_start (&childev);
		602	#endif
		603	}
326	}	604	}
327		605
328	return ev_method;	606	return ev_method;
329	}	607	}
330		608
331	/*****************************************************************************/	609	/*****************************************************************************/
332		610
333	void ev_prefork (void)	611	void
		612	ev_fork_prepare (void)
334	{	613	{
335	/* nop */	614	/* nop */
336	}	615	}
337		616
		617	void
338	void ev_postfork_parent (void)	618	ev_fork_parent (void)
339	{	619	{
340	/* nop */	620	/* nop */
341	}	621	}
342		622
		623	void
343	void ev_postfork_child (void)	624	ev_fork_child (void)
344	{	625	{
345	#if HAVE_EPOLL	626	#if EV_USE_EPOLL
346	if (ev_method == EVMETHOD_EPOLL)	627	if (ev_method == EVMETHOD_EPOLL)
347	epoll_postfork_child ();	628	epoll_postfork_child ();
348	#endif	629	#endif
349		630
350	evio_stop (&sigev);	631	ev_io_stop (&sigev);
351	close (sigpipe [0]);	632	close (sigpipe [0]);
352	close (sigpipe [1]);	633	close (sigpipe [1]);
353	pipe (sigpipe);	634	pipe (sigpipe);
354	siginit ();	635	siginit ();
355	}	636	}
356		637
357	/*****************************************************************************/	638	/*****************************************************************************/
358		639
359	static void	640	static void
360	fd_reify (void)	641	call_pending (void)
361	{	642	{
362	int i;	643	int pri;
363		644
364	for (i = 0; i < fdchangecnt; ++i)	645	for (pri = NUMPRI; pri--; )
365	{	646	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	{	647	{
377	method_modify (fd, anfd->wev, wev);	648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
378	anfd->wev = wev;
379	}
380	}
381		649
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)	650	if (p->w)
395	{	651	{
396	p->w->pending = 0;	652	p->w->pending = 0;
397	p->w->cb (p->w, p->events);	653	p->w->cb (p->w, p->events);
398	}	654	}
399	}	655	}
400
401	pendingcnt = 0;
402	}	656	}
403		657
404	static void	658	static void
405	timers_reify ()	659	timers_reify (void)
406	{	660	{
407	while (timercnt && timers [0]->at <= now)	661	while (timercnt && timers [0]->at <= now)
408	{	662	{
409	struct ev_timer *w = timers [0];	663	struct ev_timer *w = timers [0];
410		664
411	/* first reschedule or stop timer */	665	/* first reschedule or stop timer */
412	if (w->repeat)	666	if (w->repeat)
413	{	667	{
		668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
414	w->at = now + w->repeat;	669	w->at = now + w->repeat;
415	assert (("timer timeout in the past, negative repeat?", w->at > now));
416	downheap ((WT *)timers, timercnt, 0);	670	downheap ((WT *)timers, timercnt, 0);
417	}	671	}
418	else	672	else
419	evtimer_stop (w); /* nonrepeating: stop timer */	673	ev_timer_stop (w); /* nonrepeating: stop timer */
420		674
421	event ((W)w, EV_TIMEOUT);	675	event ((W)w, EV_TIMEOUT);
422	}	676	}
423	}	677	}
424		678
425	static void	679	static void
426	periodics_reify ()	680	periodics_reify (void)
427	{	681	{
428	while (periodiccnt && periodics [0]->at <= ev_now)	682	while (periodiccnt && periodics [0]->at <= ev_now)
429	{	683	{
430	struct ev_periodic *w = periodics [0];	684	struct ev_periodic *w = periodics [0];
431		685
432	/* first reschedule or stop timer */	686	/* first reschedule or stop timer */
433	if (w->interval)	687	if (w->interval)
434	{	688	{
435	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	689	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));	690	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
437	downheap ((WT *)periodics, periodiccnt, 0);	691	downheap ((WT *)periodics, periodiccnt, 0);
438	}	692	}
439	else	693	else
440	evperiodic_stop (w); /* nonrepeating: stop timer */	694	ev_periodic_stop (w); /* nonrepeating: stop timer */
441		695
442	event ((W)w, EV_TIMEOUT);	696	event ((W)w, EV_PERIODIC);
443	}	697	}
444	}	698	}
445		699
446	static void	700	static void
447	periodics_reschedule (ev_tstamp diff)	701	periodics_reschedule (ev_tstamp diff)
…		…
457	{	711	{
458	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
459		713
460	if (fabs (diff) >= 1e-4)	714	if (fabs (diff) >= 1e-4)
461	{	715	{
462	evperiodic_stop (w);	716	ev_periodic_stop (w);
463	evperiodic_start (w);	717	ev_periodic_start (w);
464		718
465	i = 0; /* restart loop, inefficient, but time jumps should be rare */	719	i = 0; /* restart loop, inefficient, but time jumps should be rare */
466	}	720	}
467	}	721	}
468	}	722	}
469	}	723	}
470		724
471	static void	725	static int
		726	time_update_monotonic (void)
		727	{
		728	now = get_clock ();
		729
		730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		731	{
		732	ev_now = now + diff;
		733	return 0;
		734	}
		735	else
		736	{
		737	now_floor = now;
		738	ev_now = ev_time ();
		739	return 1;
		740	}
		741	}
		742
		743	static void
472	time_update ()	744	time_update (void)
473	{	745	{
474	int i;	746	int i;
475		747
476	ev_now = ev_time ();	748	#if EV_USE_MONOTONIC
477
478	if (have_monotonic)	749	if (expect_true (have_monotonic))
479	{	750	{
480	ev_tstamp odiff = diff;	751	if (time_update_monotonic ())
481
482	for (i = 4; --i; ) /* loop a few times, before making important decisions */
483	{	752	{
484	now = get_clock ();	753	ev_tstamp odiff = diff;
		754
		755	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		756	{
485	diff = ev_now - now;	757	diff = ev_now - now;
486		758
487	if (fabs (odiff - diff) < MIN_TIMEJUMP)	759	if (fabs (odiff - diff) < MIN_TIMEJUMP)
488	return; /* all is well */	760	return; /* all is well */
489		761
490	ev_now = ev_time ();	762	ev_now = ev_time ();
		763	now = get_clock ();
		764	now_floor = now;
		765	}
		766
		767	periodics_reschedule (diff - odiff);
		768	/* no timer adjustment, as the monotonic clock doesn't jump */
491	}	769	}
492
493	periodics_reschedule (diff - odiff);
494	/* no timer adjustment, as the monotonic clock doesn't jump */
495	}	770	}
496	else	771	else
		772	#endif
497	{	773	{
		774	ev_now = ev_time ();
		775
498	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	776	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
499	{	777	{
500	periodics_reschedule (ev_now - now);	778	periodics_reschedule (ev_now - now);
501		779
502	/* adjust timers. this is easy, as the offset is the same for all */	780	/* adjust timers. this is easy, as the offset is the same for all */
503	for (i = 0; i < timercnt; ++i)	781	for (i = 0; i < timercnt; ++i)
…		…
511	int ev_loop_done;	789	int ev_loop_done;
512		790
513	void ev_loop (int flags)	791	void ev_loop (int flags)
514	{	792	{
515	double block;	793	double block;
516	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	794	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		795
524	do	796	do
525	{	797	{
		798	/* queue check watchers (and execute them) */
		799	if (expect_false (preparecnt))
		800	{
		801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		802	call_pending ();
		803	}
		804
526	/* update fd-related kernel structures */	805	/* update fd-related kernel structures */
527	fd_reify ();	806	fd_reify ();
528		807
529	/* calculate blocking time */	808	/* calculate blocking time */
530		809
531	/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */	810	/* we only need this for !monotonic clockor timers, but as we basically
		811	always have timers, we just calculate it always */
		812	#if EV_USE_MONOTONIC
		813	if (expect_true (have_monotonic))
		814	time_update_monotonic ();
		815	else
		816	#endif
		817	{
532	ev_now = ev_time ();	818	ev_now = ev_time ();
		819	now = ev_now;
		820	}
533		821
534	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	822	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
535	block = 0.;	823	block = 0.;
536	else	824	else
537	{	825	{
538	block = MAX_BLOCKTIME;	826	block = MAX_BLOCKTIME;
539		827
540	if (timercnt)	828	if (timercnt)
541	{	829	{
542	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	830	ev_tstamp to = timers [0]->at - now + method_fudge;
543	if (block > to) block = to;	831	if (block > to) block = to;
544	}	832	}
545		833
546	if (periodiccnt)	834	if (periodiccnt)
547	{	835	{
…		…
556		844
557	/* update ev_now, do magic */	845	/* update ev_now, do magic */
558	time_update ();	846	time_update ();
559		847
560	/* queue pending timers and reschedule them */	848	/* queue pending timers and reschedule them */
		849	timers_reify (); /* relative timers called last */
561	periodics_reify (); /* absolute timers first */	850	periodics_reify (); /* absolute timers called first */
562	timers_reify (); /* relative timers second */
563		851
564	/* queue idle watchers unless io or timers are pending */	852	/* queue idle watchers unless io or timers are pending */
565	if (!pendingcnt)	853	if (!pendingcnt)
566	queue_events ((W *)idles, idlecnt, EV_IDLE);	854	queue_events ((W *)idles, idlecnt, EV_IDLE);
567		855
568	/* queue check and possibly idle watchers */	856	/* queue check watchers, to be executed first */
		857	if (checkcnt)
569	queue_events ((W *)checks, checkcnt, EV_CHECK);	858	queue_events ((W *)checks, checkcnt, EV_CHECK);
570		859
571	call_pending ();	860	call_pending ();
572	}	861	}
573	while (!ev_loop_done);	862	while (!ev_loop_done);
574		863
…		…
599	head = &(*head)->next;	888	head = &(*head)->next;
600	}	889	}
601	}	890	}
602		891
603	static void	892	static void
		893	ev_clear_pending (W w)
		894	{
		895	if (w->pending)
		896	{
		897	pendings [ABSPRI (w)][w->pending - 1].w = 0;
		898	w->pending = 0;
		899	}
		900	}
		901
		902	static void
604	ev_start (W w, int active)	903	ev_start (W w, int active)
605	{	904	{
606	w->pending = 0;	905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		907
607	w->active = active;	908	w->active = active;
608	}	909	}
609		910
610	static void	911	static void
611	ev_stop (W w)	912	ev_stop (W w)
612	{	913	{
613	if (w->pending)
614	pendings [w->pending - 1].w = 0;
615
616	w->active = 0;	914	w->active = 0;
617	}	915	}
618		916
619	/*****************************************************************************/	917	/*****************************************************************************/
620		918
621	void	919	void
622	evio_start (struct ev_io *w)	920	ev_io_start (struct ev_io *w)
623	{	921	{
		922	int fd = w->fd;
		923
624	if (ev_is_active (w))	924	if (ev_is_active (w))
625	return;	925	return;
626		926
627	int fd = w->fd;	927	assert (("ev_io_start called with negative fd", fd >= 0));
628		928
629	ev_start ((W)w, 1);	929	ev_start ((W)w, 1);
630	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
631	wlist_add ((WL *)&anfds[fd].head, (WL)w);	931	wlist_add ((WL *)&anfds[fd].head, (WL)w);
632		932
633	++fdchangecnt;	933	fd_change (fd);
634	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
635	fdchanges [fdchangecnt - 1] = fd;
636	}	934	}
637		935
638	void	936	void
639	evio_stop (struct ev_io *w)	937	ev_io_stop (struct ev_io *w)
640	{	938	{
		939	ev_clear_pending ((W)w);
641	if (!ev_is_active (w))	940	if (!ev_is_active (w))
642	return;	941	return;
643		942
644	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
645	ev_stop ((W)w);	944	ev_stop ((W)w);
646		945
647	++fdchangecnt;	946	fd_change (w->fd);
648	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
649	fdchanges [fdchangecnt - 1] = w->fd;
650	}	947	}
651		948
652
653	void	949	void
654	evtimer_start (struct ev_timer *w)	950	ev_timer_start (struct ev_timer *w)
655	{	951	{
656	if (ev_is_active (w))	952	if (ev_is_active (w))
657	return;	953	return;
658		954
659	w->at += now;	955	w->at += now;
660		956
661	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
662		958
663	ev_start ((W)w, ++timercnt);	959	ev_start ((W)w, ++timercnt);
664	array_needsize (timers, timermax, timercnt, );	960	array_needsize (timers, timermax, timercnt, );
665	timers [timercnt - 1] = w;	961	timers [timercnt - 1] = w;
666	upheap ((WT *)timers, timercnt - 1);	962	upheap ((WT *)timers, timercnt - 1);
667	}	963	}
668		964
669	void	965	void
670	evtimer_stop (struct ev_timer *w)	966	ev_timer_stop (struct ev_timer *w)
671	{	967	{
		968	ev_clear_pending ((W)w);
672	if (!ev_is_active (w))	969	if (!ev_is_active (w))
673	return;	970	return;
674		971
675	if (w->active < timercnt--)	972	if (w->active < timercnt--)
676	{	973	{
…		…
682		979
683	ev_stop ((W)w);	980	ev_stop ((W)w);
684	}	981	}
685		982
686	void	983	void
687	evtimer_again (struct ev_timer *w)	984	ev_timer_again (struct ev_timer *w)
688	{	985	{
689	if (ev_is_active (w))	986	if (ev_is_active (w))
690	{	987	{
691	if (w->repeat)	988	if (w->repeat)
692	{	989	{
693	w->at = now + w->repeat;	990	w->at = now + w->repeat;
694	downheap ((WT *)timers, timercnt, w->active - 1);	991	downheap ((WT *)timers, timercnt, w->active - 1);
695	}	992	}
696	else	993	else
697	evtimer_stop (w);	994	ev_timer_stop (w);
698	}	995	}
699	else if (w->repeat)	996	else if (w->repeat)
700	evtimer_start (w);	997	ev_timer_start (w);
701	}	998	}
702		999
703	void	1000	void
704	evperiodic_start (struct ev_periodic *w)	1001	ev_periodic_start (struct ev_periodic *w)
705	{	1002	{
706	if (ev_is_active (w))	1003	if (ev_is_active (w))
707	return;	1004	return;
708		1005
709	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
710		1007
711	/* this formula differs from the one in periodic_reify because we do not always round up */	1008	/* this formula differs from the one in periodic_reify because we do not always round up */
712	if (w->interval)	1009	if (w->interval)
713	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
714		1011
…		…
717	periodics [periodiccnt - 1] = w;	1014	periodics [periodiccnt - 1] = w;
718	upheap ((WT *)periodics, periodiccnt - 1);	1015	upheap ((WT *)periodics, periodiccnt - 1);
719	}	1016	}
720		1017
721	void	1018	void
722	evperiodic_stop (struct ev_periodic *w)	1019	ev_periodic_stop (struct ev_periodic *w)
723	{	1020	{
		1021	ev_clear_pending ((W)w);
724	if (!ev_is_active (w))	1022	if (!ev_is_active (w))
725	return;	1023	return;
726		1024
727	if (w->active < periodiccnt--)	1025	if (w->active < periodiccnt--)
728	{	1026	{
…		…
731	}	1029	}
732		1030
733	ev_stop ((W)w);	1031	ev_stop ((W)w);
734	}	1032	}
735		1033
		1034	#ifndef SA_RESTART
		1035	# define SA_RESTART 0
		1036	#endif
		1037
736	void	1038	void
737	evsignal_start (struct ev_signal *w)	1039	ev_signal_start (struct ev_signal *w)
738	{	1040	{
739	if (ev_is_active (w))	1041	if (ev_is_active (w))
740	return;	1042	return;
		1043
		1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
741		1045
742	ev_start ((W)w, 1);	1046	ev_start ((W)w, 1);
743	array_needsize (signals, signalmax, w->signum, signals_init);	1047	array_needsize (signals, signalmax, w->signum, signals_init);
744	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
745		1049
746	if (!w->next)	1050	if (!w->next)
747	{	1051	{
748	struct sigaction sa;	1052	struct sigaction sa;
749	sa.sa_handler = sighandler;	1053	sa.sa_handler = sighandler;
750	sigfillset (&sa.sa_mask);	1054	sigfillset (&sa.sa_mask);
751	sa.sa_flags = 0;	1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
752	sigaction (w->signum, &sa, 0);	1056	sigaction (w->signum, &sa, 0);
753	}	1057	}
754	}	1058	}
755		1059
756	void	1060	void
757	evsignal_stop (struct ev_signal *w)	1061	ev_signal_stop (struct ev_signal *w)
758	{	1062	{
		1063	ev_clear_pending ((W)w);
759	if (!ev_is_active (w))	1064	if (!ev_is_active (w))
760	return;	1065	return;
761		1066
762	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
763	ev_stop ((W)w);	1068	ev_stop ((W)w);
764		1069
765	if (!signals [w->signum - 1].head)	1070	if (!signals [w->signum - 1].head)
766	signal (w->signum, SIG_DFL);	1071	signal (w->signum, SIG_DFL);
767	}	1072	}
768		1073
		1074	void
769	void evidle_start (struct ev_idle *w)	1075	ev_idle_start (struct ev_idle *w)
770	{	1076	{
771	if (ev_is_active (w))	1077	if (ev_is_active (w))
772	return;	1078	return;
773		1079
774	ev_start ((W)w, ++idlecnt);	1080	ev_start ((W)w, ++idlecnt);
775	array_needsize (idles, idlemax, idlecnt, );	1081	array_needsize (idles, idlemax, idlecnt, );
776	idles [idlecnt - 1] = w;	1082	idles [idlecnt - 1] = w;
777	}	1083	}
778		1084
		1085	void
779	void evidle_stop (struct ev_idle *w)	1086	ev_idle_stop (struct ev_idle *w)
780	{	1087	{
		1088	ev_clear_pending ((W)w);
		1089	if (ev_is_active (w))
		1090	return;
		1091
781	idles [w->active - 1] = idles [--idlecnt];	1092	idles [w->active - 1] = idles [--idlecnt];
782	ev_stop ((W)w);	1093	ev_stop ((W)w);
783	}	1094	}
784		1095
		1096	void
		1097	ev_prepare_start (struct ev_prepare *w)
		1098	{
		1099	if (ev_is_active (w))
		1100	return;
		1101
		1102	ev_start ((W)w, ++preparecnt);
		1103	array_needsize (prepares, preparemax, preparecnt, );
		1104	prepares [preparecnt - 1] = w;
		1105	}
		1106
		1107	void
		1108	ev_prepare_stop (struct ev_prepare *w)
		1109	{
		1110	ev_clear_pending ((W)w);
		1111	if (ev_is_active (w))
		1112	return;
		1113
		1114	prepares [w->active - 1] = prepares [--preparecnt];
		1115	ev_stop ((W)w);
		1116	}
		1117
		1118	void
785	void evcheck_start (struct ev_check *w)	1119	ev_check_start (struct ev_check *w)
786	{	1120	{
787	if (ev_is_active (w))	1121	if (ev_is_active (w))
788	return;	1122	return;
789		1123
790	ev_start ((W)w, ++checkcnt);	1124	ev_start ((W)w, ++checkcnt);
791	array_needsize (checks, checkmax, checkcnt, );	1125	array_needsize (checks, checkmax, checkcnt, );
792	checks [checkcnt - 1] = w;	1126	checks [checkcnt - 1] = w;
793	}	1127	}
794		1128
		1129	void
795	void evcheck_stop (struct ev_check *w)	1130	ev_check_stop (struct ev_check *w)
796	{	1131	{
		1132	ev_clear_pending ((W)w);
		1133	if (ev_is_active (w))
		1134	return;
		1135
797	checks [w->active - 1] = checks [--checkcnt];	1136	checks [w->active - 1] = checks [--checkcnt];
798	ev_stop ((W)w);	1137	ev_stop ((W)w);
799	}	1138	}
800		1139
		1140	void
		1141	ev_child_start (struct ev_child *w)
		1142	{
		1143	if (ev_is_active (w))
		1144	return;
		1145
		1146	ev_start ((W)w, 1);
		1147	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1148	}
		1149
		1150	void
		1151	ev_child_stop (struct ev_child *w)
		1152	{
		1153	ev_clear_pending ((W)w);
		1154	if (ev_is_active (w))
		1155	return;
		1156
		1157	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1158	ev_stop ((W)w);
		1159	}
		1160
801	/*****************************************************************************/	1161	/*****************************************************************************/
802		1162
		1163	struct ev_once
		1164	{
		1165	struct ev_io io;
		1166	struct ev_timer to;
		1167	void (cb)(int revents, void arg);
		1168	void *arg;
		1169	};
		1170
		1171	static void
		1172	once_cb (struct ev_once *once, int revents)
		1173	{
		1174	void (cb)(int revents, void arg) = once->cb;
		1175	void *arg = once->arg;
		1176
		1177	ev_io_stop (&once->io);
		1178	ev_timer_stop (&once->to);
		1179	free (once);
		1180
		1181	cb (revents, arg);
		1182	}
		1183
		1184	static void
		1185	once_cb_io (struct ev_io *w, int revents)
		1186	{
		1187	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
		1188	}
		1189
		1190	static void
		1191	once_cb_to (struct ev_timer *w, int revents)
		1192	{
		1193	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
		1194	}
		1195
		1196	void
		1197	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
		1198	{
		1199	struct ev_once *once = malloc (sizeof (struct ev_once));
		1200
		1201	if (!once)
		1202	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
		1203	else
		1204	{
		1205	once->cb = cb;
		1206	once->arg = arg;
		1207
		1208	ev_watcher_init (&once->io, once_cb_io);
		1209	if (fd >= 0)
		1210	{
		1211	ev_io_set (&once->io, fd, events);
		1212	ev_io_start (&once->io);
		1213	}
		1214
		1215	ev_watcher_init (&once->to, once_cb_to);
		1216	if (timeout >= 0.)
		1217	{
		1218	ev_timer_set (&once->to, timeout, 0.);
		1219	ev_timer_start (&once->to);
		1220	}
		1221	}
		1222	}
		1223
		1224	/*****************************************************************************/
		1225
803	#if 0	1226	#if 0
804		1227
805	struct ev_io wio;	1228	struct ev_io wio;
806		1229
807	static void	1230	static void
…		…
812		1235
813	static void	1236	static void
814	ocb (struct ev_timer *w, int revents)	1237	ocb (struct ev_timer *w, int revents)
815	{	1238	{
816	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1239	//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);	1240	ev_timer_stop (w);
818	evtimer_start (w);	1241	ev_timer_start (w);
819	}	1242	}
820		1243
821	static void	1244	static void
822	scb (struct ev_signal *w, int revents)	1245	scb (struct ev_signal *w, int revents)
823	{	1246	{
824	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
825	evio_stop (&wio);	1248	ev_io_stop (&wio);
826	evio_start (&wio);	1249	ev_io_start (&wio);
827	}	1250	}
828		1251
829	static void	1252	static void
830	gcb (struct ev_signal *w, int revents)	1253	gcb (struct ev_signal *w, int revents)
831	{	1254	{
…		…
835		1258
836	int main (void)	1259	int main (void)
837	{	1260	{
838	ev_init (0);	1261	ev_init (0);
839		1262
840	evio_init (&wio, sin_cb, 0, EV_READ);	1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
841	evio_start (&wio);	1264	ev_io_start (&wio);
842		1265
843	struct ev_timer t[10000];	1266	struct ev_timer t[10000];
844		1267
845	#if 0	1268	#if 0
846	int i;	1269	int i;
847	for (i = 0; i < 10000; ++i)	1270	for (i = 0; i < 10000; ++i)
848	{	1271	{
849	struct ev_timer *w = t + i;	1272	struct ev_timer *w = t + i;
850	evw_init (w, ocb, i);	1273	ev_watcher_init (w, ocb, i);
851	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);	1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
852	evtimer_start (w);	1275	ev_timer_start (w);
853	if (drand48 () < 0.5)	1276	if (drand48 () < 0.5)
854	evtimer_stop (w);	1277	ev_timer_stop (w);
855	}	1278	}
856	#endif	1279	#endif
857		1280
858	struct ev_timer t1;	1281	struct ev_timer t1;
859	evtimer_init (&t1, ocb, 5, 10);	1282	ev_timer_init (&t1, ocb, 5, 10);
860	evtimer_start (&t1);	1283	ev_timer_start (&t1);
861		1284
862	struct ev_signal sig;	1285	struct ev_signal sig;
863	evsignal_init (&sig, scb, SIGQUIT);	1286	ev_signal_init (&sig, scb, SIGQUIT);
864	evsignal_start (&sig);	1287	ev_signal_start (&sig);
865		1288
866	struct ev_check cw;	1289	struct ev_check cw;
867	evcheck_init (&cw, gcb);	1290	ev_check_init (&cw, gcb);
868	evcheck_start (&cw);	1291	ev_check_start (&cw);
869		1292
870	struct ev_idle iw;	1293	struct ev_idle iw;
871	evidle_init (&iw, gcb);	1294	ev_idle_init (&iw, gcb);
872	evidle_start (&iw);	1295	ev_idle_start (&iw);
873		1296
874	ev_loop (0);	1297	ev_loop (0);
875		1298
876	return 0;	1299	return 0;
877	}	1300	}

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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 1.50 by root, Sat Nov 3 19:41:55 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 1.50 by root, Sat Nov 3 19:41:55 2007 UTC