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

Comparing libev/ev.c (file contents):
Revision 1.18 by root, Wed Oct 31 16:29:52 2007 UTC vs.
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
		31	#ifndef EV_STANDALONE
		32	# include "config.h"
		33	#endif
29		34
30	#include <math.h>	35	#include <math.h>
31	#include <stdlib.h>	36	#include <stdlib.h>
32	#include <unistd.h>	37	#include <unistd.h>
33	#include <fcntl.h>	38	#include <fcntl.h>
…		…
36		41
37	#include <stdio.h>	42	#include <stdio.h>
38		43
39	#include <assert.h>	44	#include <assert.h>
40	#include <errno.h>	45	#include <errno.h>
		46	#include <sys/types.h>
		47	#ifndef WIN32
		48	# include <sys/wait.h>
		49	#endif
41	#include <sys/time.h>	50	#include <sys/time.h>
42	#include <time.h>	51	#include <time.h>
43		52
44	#define HAVE_EPOLL 1	53	/**/
45		54
46	#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
47	# ifdef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
48	# define HAVE_MONOTONIC 1	83	# define EV_USE_MONOTONIC 0
49	# endif	84	#endif
50	#endif
51		85
52	#ifndef HAVE_SELECT
53	# define HAVE_SELECT 1
54	#endif
55
56	#ifndef HAVE_EPOLL
57	# define HAVE_EPOLL 0
58	#endif
59
60	#ifndef HAVE_REALTIME	86	#ifndef CLOCK_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	87	# undef EV_USE_REALTIME
		88	# define EV_USE_REALTIME 0
62	#endif	89	#endif
		90
		91	/**/
63		92
64	#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) */
65	#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 */
66		97
67	#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)
68		113
69	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
70	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
71	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
72		117
73	static ev_tstamp now, diff; /* monotonic clock */	118	static ev_tstamp now_floor, now, diff; /* monotonic clock */
74	ev_tstamp ev_now;	119	ev_tstamp ev_now;
75	int ev_method;	120	int ev_method;
76		121
77	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
78		123
…		…
83	/*****************************************************************************/	128	/*****************************************************************************/
84		129
85	ev_tstamp	130	ev_tstamp
86	ev_time (void)	131	ev_time (void)
87	{	132	{
88	#if HAVE_REALTIME	133	#if EV_USE_REALTIME
89	struct timespec ts;	134	struct timespec ts;
90	clock_gettime (CLOCK_REALTIME, &ts);	135	clock_gettime (CLOCK_REALTIME, &ts);
91	return ts.tv_sec + ts.tv_nsec * 1e-9;	136	return ts.tv_sec + ts.tv_nsec * 1e-9;
92	#else	137	#else
93	struct timeval tv;	138	struct timeval tv;
…		…
97	}	142	}
98		143
99	static ev_tstamp	144	static ev_tstamp
100	get_clock (void)	145	get_clock (void)
101	{	146	{
102	#if HAVE_MONOTONIC	147	#if EV_USE_MONOTONIC
103	if (have_monotonic)	148	if (expect_true (have_monotonic))
104	{	149	{
105	struct timespec ts;	150	struct timespec ts;
106	clock_gettime (CLOCK_MONOTONIC, &ts);	151	clock_gettime (CLOCK_MONOTONIC, &ts);
107	return ts.tv_sec + ts.tv_nsec * 1e-9;	152	return ts.tv_sec + ts.tv_nsec * 1e-9;
108	}	153	}
109	#endif	154	#endif
110		155
111	return ev_time ();	156	return ev_time ();
112	}	157	}
113		158
		159	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		160
114	#define array_needsize(base,cur,cnt,init) \	161	#define array_needsize(base,cur,cnt,init) \
115	if ((cnt) > cur) \	162	if (expect_false ((cnt) > cur)) \
116	{ \	163	{ \
117	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	\
118	base = realloc (base, sizeof (base) (newcnt)); \	171	base = realloc (base, sizeof (base) (newcnt)); \
119	init (base + cur, newcnt - cur); \	172	init (base + cur, newcnt - cur); \
120	cur = newcnt; \	173	cur = newcnt; \
121	}	174	}
122		175
123	/*****************************************************************************/	176	/*****************************************************************************/
124		177
125	typedef struct	178	typedef struct
126	{	179	{
127	struct ev_io *head;	180	struct ev_watcher_list *head;
128	unsigned char wev, rev; /* want, received event set */	181	unsigned char events;
		182	unsigned char reify;
129	} ANFD;	183	} ANFD;
130		184
131	static ANFD *anfds;	185	static ANFD *anfds;
132	static int anfdmax;	186	static int anfdmax;
133		187
134	static int *fdchanges;
135	static int fdchangemax, fdchangecnt;
136
137	static void	188	static void
138	anfds_init (ANFD *base, int count)	189	anfds_init (ANFD *base, int count)
139	{	190	{
140	while (count--)	191	while (count--)
141	{	192	{
142	base->head = 0;	193	base->head = 0;
143	base->wev = base->rev = EV_NONE;	194	base->events = EV_NONE;
		195	base->reify = 0;
		196
144	++base;	197	++base;
145	}	198	}
146	}	199	}
147		200
148	typedef struct	201	typedef struct
149	{	202	{
150	W w;	203	W w;
151	int events;	204	int events;
152	} ANPENDING;	205	} ANPENDING;
153		206
154	static ANPENDING *pendings;	207	static ANPENDING *pendings [NUMPRI];
155	static int pendingmax, pendingcnt;	208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
156		209
157	static void	210	static void
158	event (W w, int events)	211	event (W w, int events)
159	{	212	{
160	if (w->active)	213	if (w->pending)
161	{	214	{
162	w->pending = ++pendingcnt;
163	array_needsize (pendings, pendingmax, pendingcnt, );
164	pendings [pendingcnt - 1].w = w;
165	pendings [pendingcnt - 1].events = events;	215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		216	return;
166	}	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);
167	}	232	}
168		233
169	static void	234	static void
170	fd_event (int fd, int events)	235	fd_event (int fd, int events)
171	{	236	{
172	ANFD *anfd = anfds + fd;	237	ANFD *anfd = anfds + fd;
173	struct ev_io *w;	238	struct ev_io *w;
174		239
175	for (w = anfd->head; w; w = w->next)	240	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
176	{	241	{
177	int ev = w->events & events;	242	int ev = w->events & events;
178		243
179	if (ev)	244	if (ev)
180	event ((W)w, ev);	245	event ((W)w, ev);
181	}	246	}
182	}	247	}
183		248
		249	/*****************************************************************************/
		250
		251	static int *fdchanges;
		252	static int fdchangemax, fdchangecnt;
		253
184	static void	254	static void
185	queue_events (W *events, int eventcnt, int type)	255	fd_reify (void)
186	{	256	{
187	int i;	257	int i;
188		258
189	for (i = 0; i < eventcnt; ++i)	259	for (i = 0; i < fdchangecnt; ++i)
190	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	}
191	}	332	}
192		333
193	/*****************************************************************************/	334	/*****************************************************************************/
194		335
195	static struct ev_timer **timers;	336	static struct ev_timer **timers;
…		…
241		382
242	/*****************************************************************************/	383	/*****************************************************************************/
243		384
244	typedef struct	385	typedef struct
245	{	386	{
246	struct ev_signal *head;	387	struct ev_watcher_list *head;
247	sig_atomic_t gotsig;	388	sig_atomic_t volatile gotsig;
248	} ANSIG;	389	} ANSIG;
249		390
250	static ANSIG *signals;	391	static ANSIG *signals;
251	static int signalmax;	392	static int signalmax;
252		393
253	static int sigpipe [2];	394	static int sigpipe [2];
254	static sig_atomic_t gotsig;	395	static sig_atomic_t volatile gotsig;
255	static struct ev_io sigev;	396	static struct ev_io sigev;
256		397
257	static void	398	static void
258	signals_init (ANSIG *base, int count)	399	signals_init (ANSIG *base, int count)
259	{	400	{
260	while (count--)	401	while (count--)
261	{	402	{
262	base->head = 0;	403	base->head = 0;
263	base->gotsig = 0;	404	base->gotsig = 0;
		405
264	++base;	406	++base;
265	}	407	}
266	}	408	}
267		409
268	static void	410	static void
…		…
270	{	412	{
271	signals [signum - 1].gotsig = 1;	413	signals [signum - 1].gotsig = 1;
272		414
273	if (!gotsig)	415	if (!gotsig)
274	{	416	{
		417	int old_errno = errno;
275	gotsig = 1;	418	gotsig = 1;
276	write (sigpipe [1], &gotsig, 1);	419	write (sigpipe [1], &signum, 1);
		420	errno = old_errno;
277	}	421	}
278	}	422	}
279		423
280	static void	424	static void
281	sigcb (struct ev_io *iow, int revents)	425	sigcb (struct ev_io *iow, int revents)
282	{	426	{
283	struct ev_signal *w;	427	struct ev_watcher_list *w;
284	int sig;	428	int signum;
285		429
		430	read (sigpipe [0], &revents, 1);
286	gotsig = 0;	431	gotsig = 0;
287	read (sigpipe [0], &revents, 1);
288		432
289	for (sig = signalmax; sig--; )	433	for (signum = signalmax; signum--; )
290	if (signals [sig].gotsig)	434	if (signals [signum].gotsig)
291	{	435	{
292	signals [sig].gotsig = 0;	436	signals [signum].gotsig = 0;
293		437
294	for (w = signals [sig].head; w; w = w->next)	438	for (w = signals [signum].head; w; w = w->next)
295	event ((W)w, EV_SIGNAL);	439	event ((W)w, EV_SIGNAL);
296	}	440	}
297	}	441	}
298		442
299	static void	443	static void
300	siginit (void)	444	siginit (void)
301	{	445	{
		446	#ifndef WIN32
302	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
303	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
304		449
305	/* rather than sort out wether we really need nb, set it */	450	/* rather than sort out wether we really need nb, set it */
306	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
307	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		453	#endif
308		454
309	evio_set (&sigev, sigpipe [0], EV_READ);	455	ev_io_set (&sigev, sigpipe [0], EV_READ);
310	evio_start (&sigev);	456	ev_io_start (&sigev);
311	}	457	}
312		458
313	/*****************************************************************************/	459	/*****************************************************************************/
314		460
315	static struct ev_idle **idles;	461	static struct ev_idle **idles;
316	static int idlemax, idlecnt;	462	static int idlemax, idlecnt;
317		463
		464	static struct ev_prepare **prepares;
		465	static int preparemax, preparecnt;
		466
318	static struct ev_check **checks;	467	static struct ev_check **checks;
319	static int checkmax, checkcnt;	468	static int checkmax, checkcnt;
320		469
321	/*****************************************************************************/	470	/*****************************************************************************/
322		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
323	#if HAVE_EPOLL	518	#if EV_USE_EPOLL
324	# include "ev_epoll.c"	519	# include "ev_epoll.c"
325	#endif	520	#endif
		521	#if EV_USE_POLL
		522	# include "ev_poll.c"
		523	#endif
326	#if HAVE_SELECT	524	#if EV_USE_SELECT
327	# include "ev_select.c"	525	# include "ev_select.c"
328	#endif	526	#endif
329		527
330	int ev_init (int flags)	528	int
		529	ev_version_major (void)
331	{	530	{
332	#if HAVE_MONOTONIC	531	return EV_VERSION_MAJOR;
333	{	532	}
334	struct timespec ts;
335	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
336	have_monotonic = 1;
337	}
338	#endif
339		533
340	ev_now = ev_time ();	534	int
341	now = get_clock ();	535	ev_version_minor (void)
342	diff = ev_now - now;	536	{
		537	return EV_VERSION_MINOR;
		538	}
343		539
344	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
345	return 0;	545	return 0;
346		546	#else
347	ev_method = EVMETHOD_NONE;	547	return getuid () != geteuid ()
348	#if HAVE_EPOLL	548	\|\| getgid () != getegid ();
349	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
350	#endif	549	#endif
351	#if HAVE_SELECT	550	}
352	if (ev_method == EVMETHOD_NONE) select_init (flags);
353	#endif
354		551
		552	int ev_init (int methods)
		553	{
355	if (ev_method)	554	if (!ev_method)
		555	{
		556	#if EV_USE_MONOTONIC
356	{	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	{
357	evw_init (&sigev, sigcb);	594	ev_watcher_init (&sigev, sigcb);
		595	ev_set_priority (&sigev, EV_MAXPRI);
358	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	}
359	}	604	}
360		605
361	return ev_method;	606	return ev_method;
362	}	607	}
363		608
364	/*****************************************************************************/	609	/*****************************************************************************/
365		610
366	void ev_prefork (void)	611	void
		612	ev_fork_prepare (void)
367	{	613	{
368	/* nop */	614	/* nop */
369	}	615	}
370		616
		617	void
371	void ev_postfork_parent (void)	618	ev_fork_parent (void)
372	{	619	{
373	/* nop */	620	/* nop */
374	}	621	}
375		622
		623	void
376	void ev_postfork_child (void)	624	ev_fork_child (void)
377	{	625	{
378	#if HAVE_EPOLL	626	#if EV_USE_EPOLL
379	if (ev_method == EVMETHOD_EPOLL)	627	if (ev_method == EVMETHOD_EPOLL)
380	epoll_postfork_child ();	628	epoll_postfork_child ();
381	#endif	629	#endif
382		630
383	evio_stop (&sigev);	631	ev_io_stop (&sigev);
384	close (sigpipe [0]);	632	close (sigpipe [0]);
385	close (sigpipe [1]);	633	close (sigpipe [1]);
386	pipe (sigpipe);	634	pipe (sigpipe);
387	siginit ();	635	siginit ();
388	}	636	}
389		637
390	/*****************************************************************************/	638	/*****************************************************************************/
391		639
392	static void	640	static void
393	fd_reify (void)	641	call_pending (void)
394	{	642	{
395	int i;	643	int pri;
396		644
397	for (i = 0; i < fdchangecnt; ++i)	645	for (pri = NUMPRI; pri--; )
398	{	646	while (pendingcnt [pri])
399	int fd = fdchanges [i];
400	ANFD *anfd = anfds + fd;
401	struct ev_io *w;
402
403	int wev = 0;
404
405	for (w = anfd->head; w; w = w->next)
406	wev \|= w->events;
407
408	if (anfd->wev != wev)
409	{	647	{
410	method_modify (fd, anfd->wev, wev);
411	anfd->wev = wev;
412	}
413	}
414
415	fdchangecnt = 0;
416	}
417
418	static void
419	call_pending ()
420	{
421	while (pendingcnt)
422	{
423	ANPENDING *p = pendings + --pendingcnt;	648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
424		649
425	if (p->w)	650	if (p->w)
426	{	651	{
427	p->w->pending = 0;	652	p->w->pending = 0;
428	p->w->cb (p->w, p->events);	653	p->w->cb (p->w, p->events);
429	}	654	}
430	}	655	}
431	}	656	}
432		657
433	static void	658	static void
434	timers_reify ()	659	timers_reify (void)
435	{	660	{
436	while (timercnt && timers [0]->at <= now)	661	while (timercnt && timers [0]->at <= now)
437	{	662	{
438	struct ev_timer *w = timers [0];	663	struct ev_timer *w = timers [0];
439
440	event ((W)w, EV_TIMEOUT);
441		664
442	/* first reschedule or stop timer */	665	/* first reschedule or stop timer */
443	if (w->repeat)	666	if (w->repeat)
444	{	667	{
		668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
445	w->at = now + w->repeat;	669	w->at = now + w->repeat;
446	assert (("timer timeout in the past, negative repeat?", w->at > now));
447	downheap ((WT *)timers, timercnt, 0);	670	downheap ((WT *)timers, timercnt, 0);
448	}	671	}
449	else	672	else
450	evtimer_stop (w); /* nonrepeating: stop timer */	673	ev_timer_stop (w); /* nonrepeating: stop timer */
451	}
452	}
453		674
		675	event ((W)w, EV_TIMEOUT);
		676	}
		677	}
		678
454	static void	679	static void
455	periodics_reify ()	680	periodics_reify (void)
456	{	681	{
457	while (periodiccnt && periodics [0]->at <= ev_now)	682	while (periodiccnt && periodics [0]->at <= ev_now)
458	{	683	{
459	struct ev_periodic *w = periodics [0];	684	struct ev_periodic *w = periodics [0];
460		685
461	/* first reschedule or stop timer */	686	/* first reschedule or stop timer */
462	if (w->interval)	687	if (w->interval)
463	{	688	{
464	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;
465	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));
466	downheap ((WT *)periodics, periodiccnt, 0);	691	downheap ((WT *)periodics, periodiccnt, 0);
467	}	692	}
468	else	693	else
469	evperiodic_stop (w); /* nonrepeating: stop timer */	694	ev_periodic_stop (w); /* nonrepeating: stop timer */
470		695
471	event ((W)w, EV_TIMEOUT);	696	event ((W)w, EV_PERIODIC);
472	}	697	}
473	}	698	}
474		699
475	static void	700	static void
476	periodics_reschedule (ev_tstamp diff)	701	periodics_reschedule (ev_tstamp diff)
…		…
486	{	711	{
487	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;
488		713
489	if (fabs (diff) >= 1e-4)	714	if (fabs (diff) >= 1e-4)
490	{	715	{
491	evperiodic_stop (w);	716	ev_periodic_stop (w);
492	evperiodic_start (w);	717	ev_periodic_start (w);
493		718
494	i = 0; /* restart loop, inefficient, but time jumps should be rare */	719	i = 0; /* restart loop, inefficient, but time jumps should be rare */
495	}	720	}
496	}	721	}
497	}	722	}
498	}	723	}
499		724
500	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
501	time_update ()	744	time_update (void)
502	{	745	{
503	int i;	746	int i;
504		747
505	ev_now = ev_time ();	748	#if EV_USE_MONOTONIC
506
507	if (have_monotonic)	749	if (expect_true (have_monotonic))
508	{	750	{
509	ev_tstamp odiff = diff;	751	if (time_update_monotonic ())
510
511	for (i = 4; --i; ) /* loop a few times, before making important decisions */
512	{	752	{
513	now = get_clock ();	753	ev_tstamp odiff = diff;
		754
		755	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		756	{
514	diff = ev_now - now;	757	diff = ev_now - now;
515		758
516	if (fabs (odiff - diff) < MIN_TIMEJUMP)	759	if (fabs (odiff - diff) < MIN_TIMEJUMP)
517	return; /* all is well */	760	return; /* all is well */
518		761
519	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 */
520	}	769	}
521
522	periodics_reschedule (diff - odiff);
523	/* no timer adjustment, as the monotonic clock doesn't jump */
524	}	770	}
525	else	771	else
		772	#endif
526	{	773	{
		774	ev_now = ev_time ();
		775
527	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))
528	{	777	{
529	periodics_reschedule (ev_now - now);	778	periodics_reschedule (ev_now - now);
530		779
531	/* 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 */
532	for (i = 0; i < timercnt; ++i)	781	for (i = 0; i < timercnt; ++i)
…		…
540	int ev_loop_done;	789	int ev_loop_done;
541		790
542	void ev_loop (int flags)	791	void ev_loop (int flags)
543	{	792	{
544	double block;	793	double block;
545	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	794	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
546
547	if (checkcnt)
548	{
549	queue_events ((W *)checks, checkcnt, EV_CHECK);
550	call_pending ();
551	}
552		795
553	do	796	do
554	{	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
555	/* update fd-related kernel structures */	805	/* update fd-related kernel structures */
556	fd_reify ();	806	fd_reify ();
557		807
558	/* calculate blocking time */	808	/* calculate blocking time */
559		809
560	/* 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	{
561	ev_now = ev_time ();	818	ev_now = ev_time ();
		819	now = ev_now;
		820	}
562		821
563	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	822	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
564	block = 0.;	823	block = 0.;
565	else	824	else
566	{	825	{
567	block = MAX_BLOCKTIME;	826	block = MAX_BLOCKTIME;
568		827
569	if (timercnt)	828	if (timercnt)
570	{	829	{
571	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	830	ev_tstamp to = timers [0]->at - now + method_fudge;
572	if (block > to) block = to;	831	if (block > to) block = to;
573	}	832	}
574		833
575	if (periodiccnt)	834	if (periodiccnt)
576	{	835	{
…		…
585		844
586	/* update ev_now, do magic */	845	/* update ev_now, do magic */
587	time_update ();	846	time_update ();
588		847
589	/* queue pending timers and reschedule them */	848	/* queue pending timers and reschedule them */
		849	timers_reify (); /* relative timers called last */
590	periodics_reify (); /* absolute timers first */	850	periodics_reify (); /* absolute timers called first */
591	timers_reify (); /* relative timers second */
592		851
593	/* queue idle watchers unless io or timers are pending */	852	/* queue idle watchers unless io or timers are pending */
594	if (!pendingcnt)	853	if (!pendingcnt)
595	queue_events ((W *)idles, idlecnt, EV_IDLE);	854	queue_events ((W *)idles, idlecnt, EV_IDLE);
596		855
597	/* queue check and possibly idle watchers */	856	/* queue check watchers, to be executed first */
		857	if (checkcnt)
598	queue_events ((W *)checks, checkcnt, EV_CHECK);	858	queue_events ((W *)checks, checkcnt, EV_CHECK);
599		859
600	call_pending ();	860	call_pending ();
601	}	861	}
602	while (!ev_loop_done);	862	while (!ev_loop_done);
603		863
…		…
628	head = &(*head)->next;	888	head = &(*head)->next;
629	}	889	}
630	}	890	}
631		891
632	static void	892	static void
633	ev_clear (W w)	893	ev_clear_pending (W w)
634	{	894	{
635	if (w->pending)	895	if (w->pending)
636	{	896	{
637	pendings [w->pending - 1].w = 0;	897	pendings [ABSPRI (w)][w->pending - 1].w = 0;
638	w->pending = 0;	898	w->pending = 0;
639	}	899	}
640	}	900	}
641		901
642	static void	902	static void
643	ev_start (W w, int active)	903	ev_start (W w, int active)
644	{	904	{
		905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		907
645	w->active = active;	908	w->active = active;
646	}	909	}
647		910
648	static void	911	static void
649	ev_stop (W w)	912	ev_stop (W w)
…		…
652	}	915	}
653		916
654	/*****************************************************************************/	917	/*****************************************************************************/
655		918
656	void	919	void
657	evio_start (struct ev_io *w)	920	ev_io_start (struct ev_io *w)
658	{	921	{
		922	int fd = w->fd;
		923
659	if (ev_is_active (w))	924	if (ev_is_active (w))
660	return;	925	return;
661		926
662	int fd = w->fd;	927	assert (("ev_io_start called with negative fd", fd >= 0));
663		928
664	ev_start ((W)w, 1);	929	ev_start ((W)w, 1);
665	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
666	wlist_add ((WL *)&anfds[fd].head, (WL)w);	931	wlist_add ((WL *)&anfds[fd].head, (WL)w);
667		932
668	++fdchangecnt;	933	fd_change (fd);
669	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
670	fdchanges [fdchangecnt - 1] = fd;
671	}	934	}
672		935
673	void	936	void
674	evio_stop (struct ev_io *w)	937	ev_io_stop (struct ev_io *w)
675	{	938	{
676	ev_clear ((W)w);	939	ev_clear_pending ((W)w);
677	if (!ev_is_active (w))	940	if (!ev_is_active (w))
678	return;	941	return;
679		942
680	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
681	ev_stop ((W)w);	944	ev_stop ((W)w);
682		945
683	++fdchangecnt;	946	fd_change (w->fd);
684	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
685	fdchanges [fdchangecnt - 1] = w->fd;
686	}	947	}
687		948
688	void	949	void
689	evtimer_start (struct ev_timer *w)	950	ev_timer_start (struct ev_timer *w)
690	{	951	{
691	if (ev_is_active (w))	952	if (ev_is_active (w))
692	return;	953	return;
693		954
694	w->at += now;	955	w->at += now;
695		956
696	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.));
697		958
698	ev_start ((W)w, ++timercnt);	959	ev_start ((W)w, ++timercnt);
699	array_needsize (timers, timermax, timercnt, );	960	array_needsize (timers, timermax, timercnt, );
700	timers [timercnt - 1] = w;	961	timers [timercnt - 1] = w;
701	upheap ((WT *)timers, timercnt - 1);	962	upheap ((WT *)timers, timercnt - 1);
702	}	963	}
703		964
704	void	965	void
705	evtimer_stop (struct ev_timer *w)	966	ev_timer_stop (struct ev_timer *w)
706	{	967	{
707	ev_clear ((W)w);	968	ev_clear_pending ((W)w);
708	if (!ev_is_active (w))	969	if (!ev_is_active (w))
709	return;	970	return;
710		971
711	if (w->active < timercnt--)	972	if (w->active < timercnt--)
712	{	973	{
…		…
718		979
719	ev_stop ((W)w);	980	ev_stop ((W)w);
720	}	981	}
721		982
722	void	983	void
723	evtimer_again (struct ev_timer *w)	984	ev_timer_again (struct ev_timer *w)
724	{	985	{
725	if (ev_is_active (w))	986	if (ev_is_active (w))
726	{	987	{
727	if (w->repeat)	988	if (w->repeat)
728	{	989	{
729	w->at = now + w->repeat;	990	w->at = now + w->repeat;
730	downheap ((WT *)timers, timercnt, w->active - 1);	991	downheap ((WT *)timers, timercnt, w->active - 1);
731	}	992	}
732	else	993	else
733	evtimer_stop (w);	994	ev_timer_stop (w);
734	}	995	}
735	else if (w->repeat)	996	else if (w->repeat)
736	evtimer_start (w);	997	ev_timer_start (w);
737	}	998	}
738		999
739	void	1000	void
740	evperiodic_start (struct ev_periodic *w)	1001	ev_periodic_start (struct ev_periodic *w)
741	{	1002	{
742	if (ev_is_active (w))	1003	if (ev_is_active (w))
743	return;	1004	return;
744		1005
745	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.));
746		1007
747	/* 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 */
748	if (w->interval)	1009	if (w->interval)
749	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
750		1011
…		…
753	periodics [periodiccnt - 1] = w;	1014	periodics [periodiccnt - 1] = w;
754	upheap ((WT *)periodics, periodiccnt - 1);	1015	upheap ((WT *)periodics, periodiccnt - 1);
755	}	1016	}
756		1017
757	void	1018	void
758	evperiodic_stop (struct ev_periodic *w)	1019	ev_periodic_stop (struct ev_periodic *w)
759	{	1020	{
760	ev_clear ((W)w);	1021	ev_clear_pending ((W)w);
761	if (!ev_is_active (w))	1022	if (!ev_is_active (w))
762	return;	1023	return;
763		1024
764	if (w->active < periodiccnt--)	1025	if (w->active < periodiccnt--)
765	{	1026	{
…		…
768	}	1029	}
769		1030
770	ev_stop ((W)w);	1031	ev_stop ((W)w);
771	}	1032	}
772		1033
		1034	#ifndef SA_RESTART
		1035	# define SA_RESTART 0
		1036	#endif
		1037
773	void	1038	void
774	evsignal_start (struct ev_signal *w)	1039	ev_signal_start (struct ev_signal *w)
775	{	1040	{
776	if (ev_is_active (w))	1041	if (ev_is_active (w))
777	return;	1042	return;
		1043
		1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
778		1045
779	ev_start ((W)w, 1);	1046	ev_start ((W)w, 1);
780	array_needsize (signals, signalmax, w->signum, signals_init);	1047	array_needsize (signals, signalmax, w->signum, signals_init);
781	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
782		1049
783	if (!w->next)	1050	if (!w->next)
784	{	1051	{
785	struct sigaction sa;	1052	struct sigaction sa;
786	sa.sa_handler = sighandler;	1053	sa.sa_handler = sighandler;
787	sigfillset (&sa.sa_mask);	1054	sigfillset (&sa.sa_mask);
788	sa.sa_flags = 0;	1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
789	sigaction (w->signum, &sa, 0);	1056	sigaction (w->signum, &sa, 0);
790	}	1057	}
791	}	1058	}
792		1059
793	void	1060	void
794	evsignal_stop (struct ev_signal *w)	1061	ev_signal_stop (struct ev_signal *w)
795	{	1062	{
796	ev_clear ((W)w);	1063	ev_clear_pending ((W)w);
797	if (!ev_is_active (w))	1064	if (!ev_is_active (w))
798	return;	1065	return;
799		1066
800	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
801	ev_stop ((W)w);	1068	ev_stop ((W)w);
802		1069
803	if (!signals [w->signum - 1].head)	1070	if (!signals [w->signum - 1].head)
804	signal (w->signum, SIG_DFL);	1071	signal (w->signum, SIG_DFL);
805	}	1072	}
806		1073
		1074	void
807	void evidle_start (struct ev_idle *w)	1075	ev_idle_start (struct ev_idle *w)
808	{	1076	{
809	if (ev_is_active (w))	1077	if (ev_is_active (w))
810	return;	1078	return;
811		1079
812	ev_start ((W)w, ++idlecnt);	1080	ev_start ((W)w, ++idlecnt);
813	array_needsize (idles, idlemax, idlecnt, );	1081	array_needsize (idles, idlemax, idlecnt, );
814	idles [idlecnt - 1] = w;	1082	idles [idlecnt - 1] = w;
815	}	1083	}
816		1084
		1085	void
817	void evidle_stop (struct ev_idle *w)	1086	ev_idle_stop (struct ev_idle *w)
818	{	1087	{
819	ev_clear ((W)w);	1088	ev_clear_pending ((W)w);
820	if (ev_is_active (w))	1089	if (ev_is_active (w))
821	return;	1090	return;
822		1091
823	idles [w->active - 1] = idles [--idlecnt];	1092	idles [w->active - 1] = idles [--idlecnt];
824	ev_stop ((W)w);	1093	ev_stop ((W)w);
825	}	1094	}
826		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
827	void evcheck_start (struct ev_check *w)	1119	ev_check_start (struct ev_check *w)
828	{	1120	{
829	if (ev_is_active (w))	1121	if (ev_is_active (w))
830	return;	1122	return;
831		1123
832	ev_start ((W)w, ++checkcnt);	1124	ev_start ((W)w, ++checkcnt);
833	array_needsize (checks, checkmax, checkcnt, );	1125	array_needsize (checks, checkmax, checkcnt, );
834	checks [checkcnt - 1] = w;	1126	checks [checkcnt - 1] = w;
835	}	1127	}
836		1128
		1129	void
837	void evcheck_stop (struct ev_check *w)	1130	ev_check_stop (struct ev_check *w)
838	{	1131	{
839	ev_clear ((W)w);	1132	ev_clear_pending ((W)w);
840	if (ev_is_active (w))	1133	if (ev_is_active (w))
841	return;	1134	return;
842		1135
843	checks [w->active - 1] = checks [--checkcnt];	1136	checks [w->active - 1] = checks [--checkcnt];
		1137	ev_stop ((W)w);
		1138	}
		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);
844	ev_stop ((W)w);	1158	ev_stop ((W)w);
845	}	1159	}
846		1160
847	/*****************************************************************************/	1161	/*****************************************************************************/
848		1162
…		…
858	once_cb (struct ev_once *once, int revents)	1172	once_cb (struct ev_once *once, int revents)
859	{	1173	{
860	void (cb)(int revents, void arg) = once->cb;	1174	void (cb)(int revents, void arg) = once->cb;
861	void *arg = once->arg;	1175	void *arg = once->arg;
862		1176
863	evio_stop (&once->io);	1177	ev_io_stop (&once->io);
864	evtimer_stop (&once->to);	1178	ev_timer_stop (&once->to);
865	free (once);	1179	free (once);
866		1180
867	cb (revents, arg);	1181	cb (revents, arg);
868	}	1182	}
869		1183
…		…
883	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1197	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
884	{	1198	{
885	struct ev_once *once = malloc (sizeof (struct ev_once));	1199	struct ev_once *once = malloc (sizeof (struct ev_once));
886		1200
887	if (!once)	1201	if (!once)
888	cb (EV_ERROR, arg);	1202	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
889	else	1203	else
890	{	1204	{
891	once->cb = cb;	1205	once->cb = cb;
892	once->arg = arg;	1206	once->arg = arg;
893		1207
894	evw_init (&once->io, once_cb_io);	1208	ev_watcher_init (&once->io, once_cb_io);
895
896	if (fd >= 0)	1209	if (fd >= 0)
897	{	1210	{
898	evio_set (&once->io, fd, events);	1211	ev_io_set (&once->io, fd, events);
899	evio_start (&once->io);	1212	ev_io_start (&once->io);
900	}	1213	}
901		1214
902	evw_init (&once->to, once_cb_to);	1215	ev_watcher_init (&once->to, once_cb_to);
903
904	if (timeout >= 0.)	1216	if (timeout >= 0.)
905	{	1217	{
906	evtimer_set (&once->to, timeout, 0.);	1218	ev_timer_set (&once->to, timeout, 0.);
907	evtimer_start (&once->to);	1219	ev_timer_start (&once->to);
908	}	1220	}
909	}	1221	}
910	}	1222	}
911		1223
912	/*****************************************************************************/	1224	/*****************************************************************************/
…		…
923		1235
924	static void	1236	static void
925	ocb (struct ev_timer *w, int revents)	1237	ocb (struct ev_timer *w, int revents)
926	{	1238	{
927	//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);
928	evtimer_stop (w);	1240	ev_timer_stop (w);
929	evtimer_start (w);	1241	ev_timer_start (w);
930	}	1242	}
931		1243
932	static void	1244	static void
933	scb (struct ev_signal *w, int revents)	1245	scb (struct ev_signal *w, int revents)
934	{	1246	{
935	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
936	evio_stop (&wio);	1248	ev_io_stop (&wio);
937	evio_start (&wio);	1249	ev_io_start (&wio);
938	}	1250	}
939		1251
940	static void	1252	static void
941	gcb (struct ev_signal *w, int revents)	1253	gcb (struct ev_signal *w, int revents)
942	{	1254	{
…		…
946		1258
947	int main (void)	1259	int main (void)
948	{	1260	{
949	ev_init (0);	1261	ev_init (0);
950		1262
951	evio_init (&wio, sin_cb, 0, EV_READ);	1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
952	evio_start (&wio);	1264	ev_io_start (&wio);
953		1265
954	struct ev_timer t[10000];	1266	struct ev_timer t[10000];
955		1267
956	#if 0	1268	#if 0
957	int i;	1269	int i;
958	for (i = 0; i < 10000; ++i)	1270	for (i = 0; i < 10000; ++i)
959	{	1271	{
960	struct ev_timer *w = t + i;	1272	struct ev_timer *w = t + i;
961	evw_init (w, ocb, i);	1273	ev_watcher_init (w, ocb, i);
962	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);	1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
963	evtimer_start (w);	1275	ev_timer_start (w);
964	if (drand48 () < 0.5)	1276	if (drand48 () < 0.5)
965	evtimer_stop (w);	1277	ev_timer_stop (w);
966	}	1278	}
967	#endif	1279	#endif
968		1280
969	struct ev_timer t1;	1281	struct ev_timer t1;
970	evtimer_init (&t1, ocb, 5, 10);	1282	ev_timer_init (&t1, ocb, 5, 10);
971	evtimer_start (&t1);	1283	ev_timer_start (&t1);
972		1284
973	struct ev_signal sig;	1285	struct ev_signal sig;
974	evsignal_init (&sig, scb, SIGQUIT);	1286	ev_signal_init (&sig, scb, SIGQUIT);
975	evsignal_start (&sig);	1287	ev_signal_start (&sig);
976		1288
977	struct ev_check cw;	1289	struct ev_check cw;
978	evcheck_init (&cw, gcb);	1290	ev_check_init (&cw, gcb);
979	evcheck_start (&cw);	1291	ev_check_start (&cw);
980		1292
981	struct ev_idle iw;	1293	struct ev_idle iw;
982	evidle_init (&iw, gcb);	1294	ev_idle_init (&iw, gcb);
983	evidle_start (&iw);	1295	ev_idle_start (&iw);
984		1296
985	ev_loop (0);	1297	ev_loop (0);
986		1298
987	return 0;	1299	return 0;
988	}	1300	}

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Comparing libev/ev.c (file contents): Revision 1.18 by root, Wed Oct 31 16:29:52 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 1.18 by root, Wed Oct 31 16:29:52 2007 UTC vs.
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC