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

Comparing libev/ev.c (file contents):
Revision 1.10 by root, Wed Oct 31 07:36:03 2007 UTC vs.
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC

…		…
		1	/*
		2	* libev event processing core, watcher management
		3	*
		4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
		5	* All rights reserved.
		6	*
		7	* Redistribution and use in source and binary forms, with or without
		8	* modification, are permitted provided that the following conditions are
		9	* met:
		10	*
		11	* * Redistributions of source code must retain the above copyright
		12	* notice, this list of conditions and the following disclaimer.
		13	*
		14	* * Redistributions in binary form must reproduce the above
		15	* copyright notice, this list of conditions and the following
		16	* disclaimer in the documentation and/or other materials provided
		17	* with the distribution.
		18	*
		19	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
		20	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
		21	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
		22	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
		23	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
		24	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
		25	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
		26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
		27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
		28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
		29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
		30	*/
		31	#if EV_USE_CONFIG_H
		32	# include "config.h"
		33	#endif
		34
1	#include <math.h>	35	#include <math.h>
2	#include <stdlib.h>	36	#include <stdlib.h>
3	#include <unistd.h>	37	#include <unistd.h>
4	#include <fcntl.h>	38	#include <fcntl.h>
5	#include <signal.h>	39	#include <signal.h>
		40	#include <stddef.h>
6		41
7	#include <stdio.h>	42	#include <stdio.h>
8		43
9	#include <assert.h>	44	#include <assert.h>
10	#include <errno.h>	45	#include <errno.h>
		46	#include <sys/types.h>
		47	#include <sys/wait.h>
11	#include <sys/time.h>	48	#include <sys/time.h>
12	#include <time.h>	49	#include <time.h>
13		50
		51	/**/
		52
14	#ifndef HAVE_MONOTONIC	53	#ifndef EV_USE_MONOTONIC
		54	# define EV_USE_MONOTONIC 1
		55	#endif
		56
		57	#ifndef EV_USE_SELECT
		58	# define EV_USE_SELECT 1
		59	#endif
		60
		61	#ifndef EV_USE_POLL
		62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		63	#endif
		64
		65	#ifndef EV_USE_EPOLL
		66	# define EV_USE_EPOLL 0
		67	#endif
		68
		69	#ifndef EV_USE_KQUEUE
		70	# define EV_USE_KQUEUE 0
		71	#endif
		72
		73	#ifndef EV_USE_REALTIME
		74	# define EV_USE_REALTIME 1
		75	#endif
		76
		77	/**/
		78
15	# ifdef CLOCK_MONOTONIC	79	#ifndef CLOCK_MONOTONIC
		80	# undef EV_USE_MONOTONIC
16	# define HAVE_MONOTONIC 1	81	# define EV_USE_MONOTONIC 0
17	# endif	82	#endif
18	#endif
19		83
20	#ifndef HAVE_SELECT
21	# define HAVE_SELECT 1
22	#endif
23
24	#ifndef HAVE_EPOLL
25	# define HAVE_EPOLL 0
26	#endif
27
28	#ifndef HAVE_REALTIME	84	#ifndef CLOCK_REALTIME
29	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	85	# undef EV_USE_REALTIME
		86	# define EV_USE_REALTIME 0
30	#endif	87	#endif
		88
		89	/**/
31		90
32	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	91	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
33	#define MAX_BLOCKTIME 60.	92	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		93	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		94	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
34		95
35	#include "ev.h"	96	#include "ev.h"
36		97
37	struct ev_watcher {	98	#if __GNUC__ >= 3
38	EV_WATCHER (ev_watcher);	99	# define expect(expr,value) __builtin_expect ((expr),(value))
39	};	100	# define inline inline
		101	#else
		102	# define expect(expr,value) (expr)
		103	# define inline static
		104	#endif
40		105
41	struct ev_watcher_list {	106	#define expect_false(expr) expect ((expr) != 0, 0)
42	EV_WATCHER_LIST (ev_watcher_list);	107	#define expect_true(expr) expect ((expr) != 0, 1)
43	};	108
		109	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		110	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
44		111
45	typedef struct ev_watcher *W;	112	typedef struct ev_watcher *W;
46	typedef struct ev_watcher_list *WL;	113	typedef struct ev_watcher_list *WL;
		114	typedef struct ev_watcher_time *WT;
47		115
48	static ev_tstamp now, diff; /* monotonic clock */	116	static ev_tstamp now_floor, now, diff; /* monotonic clock */
49	ev_tstamp ev_now;	117	ev_tstamp ev_now;
50	int ev_method;	118	int ev_method;
51		119
52	static int have_monotonic; /* runtime */	120	static int have_monotonic; /* runtime */
53		121
58	/*****************************************************************************/	126	/*****************************************************************************/
59		127
60	ev_tstamp	128	ev_tstamp
61	ev_time (void)	129	ev_time (void)
62	{	130	{
63	#if HAVE_REALTIME	131	#if EV_USE_REALTIME
64	struct timespec ts;	132	struct timespec ts;
65	clock_gettime (CLOCK_REALTIME, &ts);	133	clock_gettime (CLOCK_REALTIME, &ts);
66	return ts.tv_sec + ts.tv_nsec * 1e-9;	134	return ts.tv_sec + ts.tv_nsec * 1e-9;
67	#else	135	#else
68	struct timeval tv;	136	struct timeval tv;
…		…
72	}	140	}
73		141
74	static ev_tstamp	142	static ev_tstamp
75	get_clock (void)	143	get_clock (void)
76	{	144	{
77	#if HAVE_MONOTONIC	145	#if EV_USE_MONOTONIC
78	if (have_monotonic)	146	if (expect_true (have_monotonic))
79	{	147	{
80	struct timespec ts;	148	struct timespec ts;
81	clock_gettime (CLOCK_MONOTONIC, &ts);	149	clock_gettime (CLOCK_MONOTONIC, &ts);
82	return ts.tv_sec + ts.tv_nsec * 1e-9;	150	return ts.tv_sec + ts.tv_nsec * 1e-9;
83	}	151	}
84	#endif	152	#endif
85		153
86	return ev_time ();	154	return ev_time ();
87	}	155	}
88		156
		157	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		158
89	#define array_needsize(base,cur,cnt,init) \	159	#define array_needsize(base,cur,cnt,init) \
90	if ((cnt) > cur) \	160	if (expect_false ((cnt) > cur)) \
91	{ \	161	{ \
92	int newcnt = cur ? cur << 1 : 16; \	162	int newcnt = cur; \
93	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	163	do \
		164	{ \
		165	newcnt = array_roundsize (base, newcnt << 1); \
		166	} \
		167	while ((cnt) > newcnt); \
		168	\
94	base = realloc (base, sizeof (base) (newcnt)); \	169	base = realloc (base, sizeof (base) (newcnt)); \
95	init (base + cur, newcnt - cur); \	170	init (base + cur, newcnt - cur); \
96	cur = newcnt; \	171	cur = newcnt; \
97	}	172	}
98		173
99	/*****************************************************************************/	174	/*****************************************************************************/
100		175
101	typedef struct	176	typedef struct
102	{	177	{
103	struct ev_io *head;	178	struct ev_io *head;
104	unsigned char wev, rev; /* want, received event set */	179	unsigned char events;
		180	unsigned char reify;
105	} ANFD;	181	} ANFD;
106		182
107	static ANFD *anfds;	183	static ANFD *anfds;
108	static int anfdmax;	184	static int anfdmax;
109		185
110	static int *fdchanges;
111	static int fdchangemax, fdchangecnt;
112
113	static void	186	static void
114	anfds_init (ANFD *base, int count)	187	anfds_init (ANFD *base, int count)
115	{	188	{
116	while (count--)	189	while (count--)
117	{	190	{
118	base->head = 0;	191	base->head = 0;
119	base->wev = base->rev = EV_NONE;	192	base->events = EV_NONE;
		193	base->reify = 0;
		194
120	++base;	195	++base;
121	}	196	}
122	}	197	}
123		198
124	typedef struct	199	typedef struct
125	{	200	{
126	W w;	201	W w;
127	int events;	202	int events;
128	} ANPENDING;	203	} ANPENDING;
129		204
130	static ANPENDING *pendings;	205	static ANPENDING *pendings [NUMPRI];
131	static int pendingmax, pendingcnt;	206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
132		207
133	static void	208	static void
134	event (W w, int events)	209	event (W w, int events)
135	{	210	{
		211	if (w->pending)
		212	{
		213	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		214	return;
		215	}
		216
136	w->pending = ++pendingcnt;	217	w->pending = ++pendingcnt [ABSPRI (w)];
137	array_needsize (pendings, pendingmax, pendingcnt, );	218	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
138	pendings [pendingcnt - 1].w = w;	219	pendings [ABSPRI (w)][w->pending - 1].w = w;
139	pendings [pendingcnt - 1].events = events;	220	pendings [ABSPRI (w)][w->pending - 1].events = events;
		221	}
		222
		223	static void
		224	queue_events (W *events, int eventcnt, int type)
		225	{
		226	int i;
		227
		228	for (i = 0; i < eventcnt; ++i)
		229	event (events [i], type);
140	}	230	}
141		231
142	static void	232	static void
143	fd_event (int fd, int events)	233	fd_event (int fd, int events)
144	{	234	{
…		…
152	if (ev)	242	if (ev)
153	event ((W)w, ev);	243	event ((W)w, ev);
154	}	244	}
155	}	245	}
156		246
		247	/*****************************************************************************/
		248
		249	static int *fdchanges;
		250	static int fdchangemax, fdchangecnt;
		251
157	static void	252	static void
158	queue_events (W *events, int eventcnt, int type)	253	fd_reify (void)
159	{	254	{
160	int i;	255	int i;
161		256
162	for (i = 0; i < eventcnt; ++i)	257	for (i = 0; i < fdchangecnt; ++i)
163	event (events [i], type);	258	{
164	}	259	int fd = fdchanges [i];
		260	ANFD *anfd = anfds + fd;
		261	struct ev_io *w;
165		262
166	/*****************************************************************************/	263	int events = 0;
167		264
		265	for (w = anfd->head; w; w = w->next)
		266	events \|= w->events;
		267
		268	anfd->reify = 0;
		269
		270	if (anfd->events != events)
		271	{
		272	method_modify (fd, anfd->events, events);
		273	anfd->events = events;
		274	}
		275	}
		276
		277	fdchangecnt = 0;
		278	}
		279
		280	static void
		281	fd_change (int fd)
		282	{
		283	if (anfds [fd].reify \|\| fdchangecnt < 0)
		284	return;
		285
		286	anfds [fd].reify = 1;
		287
		288	++fdchangecnt;
		289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		290	fdchanges [fdchangecnt - 1] = fd;
		291	}
		292
		293	static void
		294	fd_kill (int fd)
		295	{
		296	struct ev_io *w;
		297
		298	printf ("killing fd %d\n", fd);//D
		299	while ((w = anfds [fd].head))
		300	{
		301	ev_io_stop (w);
		302	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		303	}
		304	}
		305
		306	/* called on EBADF to verify fds */
		307	static void
		308	fd_ebadf (void)
		309	{
		310	int fd;
		311
		312	for (fd = 0; fd < anfdmax; ++fd)
		313	if (anfds [fd].events)
		314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		315	fd_kill (fd);
		316	}
		317
		318	/* called on ENOMEM in select/poll to kill some fds and retry */
		319	static void
		320	fd_enomem (void)
		321	{
		322	int fd = anfdmax;
		323
		324	while (fd--)
		325	if (anfds [fd].events)
		326	{
		327	close (fd);
		328	fd_kill (fd);
		329	return;
		330	}
		331	}
		332
		333	/*****************************************************************************/
		334
168	static struct ev_timer **atimers;	335	static struct ev_timer **timers;
169	static int atimermax, atimercnt;	336	static int timermax, timercnt;
170		337
171	static struct ev_timer **rtimers;	338	static struct ev_periodic **periodics;
172	static int rtimermax, rtimercnt;	339	static int periodicmax, periodiccnt;
173		340
174	static void	341	static void
175	upheap (struct ev_timer **timers, int k)	342	upheap (WT *timers, int k)
176	{	343	{
177	struct ev_timer *w = timers [k];	344	WT w = timers [k];
178		345
179	while (k && timers [k >> 1]->at > w->at)	346	while (k && timers [k >> 1]->at > w->at)
180	{	347	{
181	timers [k] = timers [k >> 1];	348	timers [k] = timers [k >> 1];
182	timers [k]->active = k + 1;	349	timers [k]->active = k + 1;
…		…
187	timers [k]->active = k + 1;	354	timers [k]->active = k + 1;
188		355
189	}	356	}
190		357
191	static void	358	static void
192	downheap (struct ev_timer **timers, int N, int k)	359	downheap (WT *timers, int N, int k)
193	{	360	{
194	struct ev_timer *w = timers [k];	361	WT w = timers [k];
195		362
196	while (k < (N >> 1))	363	while (k < (N >> 1))
197	{	364	{
198	int j = k << 1;	365	int j = k << 1;
199		366
…		…
215	/*****************************************************************************/	382	/*****************************************************************************/
216		383
217	typedef struct	384	typedef struct
218	{	385	{
219	struct ev_signal *head;	386	struct ev_signal *head;
220	sig_atomic_t gotsig;	387	sig_atomic_t volatile gotsig;
221	} ANSIG;	388	} ANSIG;
222		389
223	static ANSIG *signals;	390	static ANSIG *signals;
224	static int signalmax;	391	static int signalmax;
225		392
226	static int sigpipe [2];	393	static int sigpipe [2];
227	static sig_atomic_t gotsig;	394	static sig_atomic_t volatile gotsig;
228	static struct ev_io sigev;	395	static struct ev_io sigev;
229		396
230	static void	397	static void
231	signals_init (ANSIG *base, int count)	398	signals_init (ANSIG *base, int count)
232	{	399	{
233	while (count--)	400	while (count--)
234	{	401	{
235	base->head = 0;	402	base->head = 0;
236	base->gotsig = 0;	403	base->gotsig = 0;
		404
237	++base;	405	++base;
238	}	406	}
239	}	407	}
240		408
241	static void	409	static void
…		…
244	signals [signum - 1].gotsig = 1;	412	signals [signum - 1].gotsig = 1;
245		413
246	if (!gotsig)	414	if (!gotsig)
247	{	415	{
248	gotsig = 1;	416	gotsig = 1;
249	write (sigpipe [1], &gotsig, 1);	417	write (sigpipe [1], &signum, 1);
250	}	418	}
251	}	419	}
252		420
253	static void	421	static void
254	sigcb (struct ev_io *iow, int revents)	422	sigcb (struct ev_io *iow, int revents)
255	{	423	{
256	struct ev_signal *w;	424	struct ev_signal *w;
257	int sig;	425	int signum;
258		426
		427	read (sigpipe [0], &revents, 1);
259	gotsig = 0;	428	gotsig = 0;
260	read (sigpipe [0], &revents, 1);
261		429
262	for (sig = signalmax; sig--; )	430	for (signum = signalmax; signum--; )
263	if (signals [sig].gotsig)	431	if (signals [signum].gotsig)
264	{	432	{
265	signals [sig].gotsig = 0;	433	signals [signum].gotsig = 0;
266		434
267	for (w = signals [sig].head; w; w = w->next)	435	for (w = signals [signum].head; w; w = w->next)
268	event ((W)w, EV_SIGNAL);	436	event ((W)w, EV_SIGNAL);
269	}	437	}
270	}	438	}
271		439
272	static void	440	static void
…		…
277		445
278	/* rather than sort out wether we really need nb, set it */	446	/* rather than sort out wether we really need nb, set it */
279	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
280	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
281		449
282	evio_set (&sigev, sigpipe [0], EV_READ);	450	ev_io_set (&sigev, sigpipe [0], EV_READ);
283	evio_start (&sigev);	451	ev_io_start (&sigev);
284	}	452	}
285		453
286	/*****************************************************************************/	454	/*****************************************************************************/
287		455
288	static struct ev_idle **idles;	456	static struct ev_idle **idles;
289	static int idlemax, idlecnt;	457	static int idlemax, idlecnt;
290		458
		459	static struct ev_prepare **prepares;
		460	static int preparemax, preparecnt;
		461
291	static struct ev_check **checks;	462	static struct ev_check **checks;
292	static int checkmax, checkcnt;	463	static int checkmax, checkcnt;
293		464
294	/*****************************************************************************/	465	/*****************************************************************************/
295		466
		467	static struct ev_child *childs [PID_HASHSIZE];
		468	static struct ev_signal childev;
		469
		470	#ifndef WCONTINUED
		471	# define WCONTINUED 0
		472	#endif
		473
		474	static void
		475	childcb (struct ev_signal *sw, int revents)
		476	{
		477	struct ev_child *w;
		478	int pid, status;
		479
		480	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)
		481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)
		482	if (w->pid == pid \|\| !w->pid)
		483	{
		484	w->status = status;
		485	event ((W)w, EV_CHILD);
		486	}
		487	}
		488
		489	/*****************************************************************************/
		490
		491	#if EV_USE_KQUEUE
		492	# include "ev_kqueue.c"
		493	#endif
296	#if HAVE_EPOLL	494	#if EV_USE_EPOLL
297	# include "ev_epoll.c"	495	# include "ev_epoll.c"
298	#endif	496	#endif
		497	#if EV_USE_POLL
		498	# include "ev_poll.c"
		499	#endif
299	#if HAVE_SELECT	500	#if EV_USE_SELECT
300	# include "ev_select.c"	501	# include "ev_select.c"
301	#endif	502	#endif
302		503
		504	int
		505	ev_version_major (void)
		506	{
		507	return EV_VERSION_MAJOR;
		508	}
		509
		510	int
		511	ev_version_minor (void)
		512	{
		513	return EV_VERSION_MINOR;
		514	}
		515
		516	/* return true if we are running with elevated privileges and ignore env variables */
		517	static int
		518	enable_secure ()
		519	{
		520	return getuid () != geteuid ()
		521	\|\| getgid () != getegid ();
		522	}
		523
303	int ev_init (int flags)	524	int ev_init (int methods)
304	{	525	{
305	#if HAVE_MONOTONIC
306	{
307	struct timespec ts;
308	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
309	have_monotonic = 1;
310	}
311	#endif
312
313	ev_now = ev_time ();
314	now = get_clock ();
315	diff = ev_now - now;
316
317	if (pipe (sigpipe))
318	return 0;
319
320	ev_method = EVMETHOD_NONE;
321	#if HAVE_EPOLL
322	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
323	#endif
324	#if HAVE_SELECT
325	if (ev_method == EVMETHOD_NONE) select_init (flags);
326	#endif
327
328	if (ev_method)	526	if (!ev_method)
		527	{
		528	#if EV_USE_MONOTONIC
329	{	529	{
		530	struct timespec ts;
		531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		532	have_monotonic = 1;
		533	}
		534	#endif
		535
		536	ev_now = ev_time ();
		537	now = get_clock ();
		538	now_floor = now;
		539	diff = ev_now - now;
		540
		541	if (pipe (sigpipe))
		542	return 0;
		543
		544	if (methods == EVMETHOD_AUTO)
		545	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		546	methods = atoi (getenv ("LIBEV_METHODS"));
		547	else
		548	methods = EVMETHOD_ANY;
		549
		550	ev_method = 0;
		551	#if EV_USE_KQUEUE
		552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);
		553	#endif
		554	#if EV_USE_EPOLL
		555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
		556	#endif
		557	#if EV_USE_POLL
		558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		559	#endif
		560	#if EV_USE_SELECT
		561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
		562	#endif
		563
		564	if (ev_method)
		565	{
330	evw_init (&sigev, sigcb, 0);	566	ev_watcher_init (&sigev, sigcb);
331	siginit ();	567	siginit ();
		568
		569	ev_signal_init (&childev, childcb, SIGCHLD);
		570	ev_signal_start (&childev);
		571	}
332	}	572	}
333		573
334	return ev_method;	574	return ev_method;
335	}	575	}
336		576
337	/*****************************************************************************/	577	/*****************************************************************************/
338		578
339	void ev_prefork (void)	579	void
		580	ev_fork_prepare (void)
340	{	581	{
		582	/* nop */
341	}	583	}
342		584
		585	void
343	void ev_postfork_parent (void)	586	ev_fork_parent (void)
344	{	587	{
		588	/* nop */
345	}	589	}
346		590
		591	void
347	void ev_postfork_child (void)	592	ev_fork_child (void)
348	{	593	{
349	#if HAVE_EPOLL	594	#if EV_USE_EPOLL
350	if (ev_method == EVMETHOD_EPOLL)	595	if (ev_method == EVMETHOD_EPOLL)
351	epoll_postfork_child ();	596	epoll_postfork_child ();
352	#endif	597	#endif
353		598
354	evio_stop (&sigev);	599	ev_io_stop (&sigev);
355	close (sigpipe [0]);	600	close (sigpipe [0]);
356	close (sigpipe [1]);	601	close (sigpipe [1]);
357	pipe (sigpipe);	602	pipe (sigpipe);
358	siginit ();	603	siginit ();
359	}	604	}
360		605
361	/*****************************************************************************/	606	/*****************************************************************************/
362		607
363	static void	608	static void
364	fd_reify (void)	609	call_pending (void)
365	{	610	{
366	int i;	611	int pri;
367		612
368	for (i = 0; i < fdchangecnt; ++i)	613	for (pri = NUMPRI; pri--; )
369	{	614	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	{	615	{
381	method_modify (fd, anfd->wev, wev);	616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
382	anfd->wev = wev;
383	}
384	}
385		617
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)	618	if (p->w)
399	{	619	{
400	p->w->pending = 0;	620	p->w->pending = 0;
401	p->w->cb (p->w, p->events);	621	p->w->cb (p->w, p->events);
402	}	622	}
403	}	623	}
404
405	pendingcnt = 0;
406	}	624	}
407		625
408	static void	626	static void
409	timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now)	627	timers_reify (void)
410	{	628	{
411	while (timercnt && timers [0]->at <= now)	629	while (timercnt && timers [0]->at <= now)
412	{	630	{
413	struct ev_timer *w = timers [0];	631	struct ev_timer *w = timers [0];
414		632
415	/* first reschedule or stop timer */	633	/* first reschedule or stop timer */
416	if (w->repeat)	634	if (w->repeat)
417	{	635	{
418	if (w->is_abs)	636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
419	w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat;
420	else
421	w->at = now + w->repeat;	637	w->at = now + w->repeat;
422
423	assert (w->at > now);
424
425	downheap (timers, timercnt, 0);	638	downheap ((WT *)timers, timercnt, 0);
426	}	639	}
427	else	640	else
428	{
429	evtimer_stop (w); /* nonrepeating: stop timer */	641	ev_timer_stop (w); /* nonrepeating: stop timer */
430	--timercnt; /* maybe pass by reference instead? */
431	}
432		642
433	event ((W)w, EV_TIMEOUT);	643	event ((W)w, EV_TIMEOUT);
434	}	644	}
435	}	645	}
436		646
437	static void	647	static void
438	time_update ()	648	periodics_reify (void)
		649	{
		650	while (periodiccnt && periodics [0]->at <= ev_now)
		651	{
		652	struct ev_periodic *w = periodics [0];
		653
		654	/* first reschedule or stop timer */
		655	if (w->interval)
		656	{
		657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
		658	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
		659	downheap ((WT *)periodics, periodiccnt, 0);
		660	}
		661	else
		662	ev_periodic_stop (w); /* nonrepeating: stop timer */
		663
		664	event ((W)w, EV_PERIODIC);
		665	}
		666	}
		667
		668	static void
		669	periodics_reschedule (ev_tstamp diff)
439	{	670	{
440	int i;	671	int i;
441	ev_now = ev_time ();
442		672
443	if (have_monotonic)	673	/* adjust periodics after time jump */
		674	for (i = 0; i < periodiccnt; ++i)
444	{	675	{
445	ev_tstamp odiff = diff;	676	struct ev_periodic *w = periodics [i];
446		677
447	/* detecting time jumps is much more difficult */	678	if (w->interval)
448	for (i = 2; --i; ) /* loop a few times, before making important decisions */
449	{
450	now = get_clock ();
451	diff = ev_now - now;
452
453	if (fabs (odiff - diff) < MIN_TIMEJUMP)
454	return; /* all is well */
455
456	ev_now = ev_time ();
457	}	679	{
		680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
458		681
459	/* time jump detected, reschedule atimers */	682	if (fabs (diff) >= 1e-4)
460	for (i = 0; i < atimercnt; ++i)	683	{
		684	ev_periodic_stop (w);
		685	ev_periodic_start (w);
		686
		687	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		688	}
461	{	689	}
462	struct ev_timer *w = atimers [i];	690	}
463	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;	691	}
464	}	692
		693	static int
		694	time_update_monotonic (void)
		695	{
		696	now = get_clock ();
		697
		698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		699	{
		700	ev_now = now + diff;
		701	return 0;
465	}	702	}
466	else	703	else
467	{	704	{
		705	now_floor = now;
		706	ev_now = ev_time ();
		707	return 1;
		708	}
		709	}
		710
		711	static void
		712	time_update (void)
		713	{
		714	int i;
		715
		716	#if EV_USE_MONOTONIC
		717	if (expect_true (have_monotonic))
		718	{
		719	if (time_update_monotonic ())
		720	{
		721	ev_tstamp odiff = diff;
		722
		723	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		724	{
		725	diff = ev_now - now;
		726
		727	if (fabs (odiff - diff) < MIN_TIMEJUMP)
		728	return; /* all is well */
		729
		730	ev_now = ev_time ();
		731	now = get_clock ();
		732	now_floor = now;
		733	}
		734
		735	periodics_reschedule (diff - odiff);
		736	/* no timer adjustment, as the monotonic clock doesn't jump */
		737	}
		738	}
		739	else
		740	#endif
		741	{
		742	ev_now = ev_time ();
		743
468	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	744	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
469	/* time jump detected, adjust rtimers */	745	{
		746	periodics_reschedule (ev_now - now);
		747
		748	/* adjust timers. this is easy, as the offset is the same for all */
470	for (i = 0; i < rtimercnt; ++i)	749	for (i = 0; i < timercnt; ++i)
471	rtimers [i]->at += ev_now - now;	750	timers [i]->at += diff;
		751	}
472		752
473	now = ev_now;	753	now = ev_now;
474	}	754	}
475	}	755	}
476		756
477	int ev_loop_done;	757	int ev_loop_done;
478		758
479	void ev_loop (int flags)	759	void ev_loop (int flags)
480	{	760	{
481	double block;	761	double block;
482	ev_loop_done = flags & EVLOOP_ONESHOT;	762	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
483
484	if (checkcnt)
485	{
486	queue_events ((W *)checks, checkcnt, EV_CHECK);
487	call_pending ();
488	}
489		763
490	do	764	do
491	{	765	{
		766	/* queue check watchers (and execute them) */
		767	if (expect_false (preparecnt))
		768	{
		769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		770	call_pending ();
		771	}
		772
492	/* update fd-related kernel structures */	773	/* update fd-related kernel structures */
493	fd_reify ();	774	fd_reify ();
494		775
495	/* calculate blocking time */	776	/* calculate blocking time */
		777
		778	/* we only need this for !monotonic clockor timers, but as we basically
		779	always have timers, we just calculate it always */
		780	#if EV_USE_MONOTONIC
		781	if (expect_true (have_monotonic))
		782	time_update_monotonic ();
		783	else
		784	#endif
		785	{
		786	ev_now = ev_time ();
		787	now = ev_now;
		788	}
		789
496	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	790	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
497	block = 0.;	791	block = 0.;
498	else	792	else
499	{	793	{
500	block = MAX_BLOCKTIME;	794	block = MAX_BLOCKTIME;
501		795
502	if (rtimercnt)	796	if (timercnt)
503	{	797	{
504	ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge;	798	ev_tstamp to = timers [0]->at - now + method_fudge;
505	if (block > to) block = to;	799	if (block > to) block = to;
506	}	800	}
507		801
508	if (atimercnt)	802	if (periodiccnt)
509	{	803	{
510	ev_tstamp to = atimers [0]->at - ev_time () + method_fudge;	804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;
511	if (block > to) block = to;	805	if (block > to) block = to;
512	}	806	}
513		807
514	if (block < 0.) block = 0.;	808	if (block < 0.) block = 0.;
515	}	809	}
…		…
518		812
519	/* update ev_now, do magic */	813	/* update ev_now, do magic */
520	time_update ();	814	time_update ();
521		815
522	/* queue pending timers and reschedule them */	816	/* queue pending timers and reschedule them */
523	/* absolute timers first */	817	timers_reify (); /* relative timers called last */
524	timers_reify (atimers, atimercnt, ev_now);	818	periodics_reify (); /* absolute timers called first */
525	/* relative timers second */
526	timers_reify (rtimers, rtimercnt, now);
527		819
528	/* queue idle watchers unless io or timers are pending */	820	/* queue idle watchers unless io or timers are pending */
529	if (!pendingcnt)	821	if (!pendingcnt)
530	queue_events ((W *)idles, idlecnt, EV_IDLE);	822	queue_events ((W *)idles, idlecnt, EV_IDLE);
531		823
532	/* queue check and possibly idle watchers */	824	/* queue check watchers, to be executed first */
		825	if (checkcnt)
533	queue_events ((W *)checks, checkcnt, EV_CHECK);	826	queue_events ((W *)checks, checkcnt, EV_CHECK);
534		827
535	call_pending ();	828	call_pending ();
536	}	829	}
537	while (!ev_loop_done);	830	while (!ev_loop_done);
		831
		832	if (ev_loop_done != 2)
		833	ev_loop_done = 0;
538	}	834	}
539		835
540	/*****************************************************************************/	836	/*****************************************************************************/
541		837
542	static void	838	static void
…		…
560	head = &(*head)->next;	856	head = &(*head)->next;
561	}	857	}
562	}	858	}
563		859
564	static void	860	static void
		861	ev_clear_pending (W w)
		862	{
		863	if (w->pending)
		864	{
		865	pendings [ABSPRI (w)][w->pending - 1].w = 0;
		866	w->pending = 0;
		867	}
		868	}
		869
		870	static void
565	ev_start (W w, int active)	871	ev_start (W w, int active)
566	{	872	{
567	w->pending = 0;	873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		875
568	w->active = active;	876	w->active = active;
569	}	877	}
570		878
571	static void	879	static void
572	ev_stop (W w)	880	ev_stop (W w)
573	{	881	{
574	if (w->pending)
575	pendings [w->pending - 1].w = 0;
576
577	w->active = 0;	882	w->active = 0;
578	/* nop */
579	}	883	}
580		884
581	/*****************************************************************************/	885	/*****************************************************************************/
582		886
583	void	887	void
584	evio_start (struct ev_io *w)	888	ev_io_start (struct ev_io *w)
585	{	889	{
		890	int fd = w->fd;
		891
586	if (ev_is_active (w))	892	if (ev_is_active (w))
587	return;	893	return;
588		894
589	int fd = w->fd;	895	assert (("ev_io_start called with negative fd", fd >= 0));
590		896
591	ev_start ((W)w, 1);	897	ev_start ((W)w, 1);
592	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
593	wlist_add ((WL *)&anfds[fd].head, (WL)w);	899	wlist_add ((WL *)&anfds[fd].head, (WL)w);
594		900
595	++fdchangecnt;	901	fd_change (fd);
596	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
597	fdchanges [fdchangecnt - 1] = fd;
598	}	902	}
599		903
600	void	904	void
601	evio_stop (struct ev_io *w)	905	ev_io_stop (struct ev_io *w)
602	{	906	{
		907	ev_clear_pending ((W)w);
603	if (!ev_is_active (w))	908	if (!ev_is_active (w))
604	return;	909	return;
605		910
606	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
607	ev_stop ((W)w);	912	ev_stop ((W)w);
608		913
609	++fdchangecnt;	914	fd_change (w->fd);
610	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
611	fdchanges [fdchangecnt - 1] = w->fd;
612	}	915	}
613		916
614	void	917	void
615	evtimer_start (struct ev_timer *w)	918	ev_timer_start (struct ev_timer *w)
616	{	919	{
617	if (ev_is_active (w))	920	if (ev_is_active (w))
618	return;	921	return;
619		922
620	if (w->is_abs)	923	w->at += now;
		924
		925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		926
		927	ev_start ((W)w, ++timercnt);
		928	array_needsize (timers, timermax, timercnt, );
		929	timers [timercnt - 1] = w;
		930	upheap ((WT *)timers, timercnt - 1);
		931	}
		932
		933	void
		934	ev_timer_stop (struct ev_timer *w)
		935	{
		936	ev_clear_pending ((W)w);
		937	if (!ev_is_active (w))
		938	return;
		939
		940	if (w->active < timercnt--)
		941	{
		942	timers [w->active - 1] = timers [timercnt];
		943	downheap ((WT *)timers, timercnt, w->active - 1);
621	{	944	}
622	/* this formula differs from the one in timer_reify becuse we do not round up */	945
		946	w->at = w->repeat;
		947
		948	ev_stop ((W)w);
		949	}
		950
		951	void
		952	ev_timer_again (struct ev_timer *w)
		953	{
		954	if (ev_is_active (w))
		955	{
623	if (w->repeat)	956	if (w->repeat)
		957	{
		958	w->at = now + w->repeat;
		959	downheap ((WT *)timers, timercnt, w->active - 1);
		960	}
		961	else
		962	ev_timer_stop (w);
		963	}
		964	else if (w->repeat)
		965	ev_timer_start (w);
		966	}
		967
		968	void
		969	ev_periodic_start (struct ev_periodic *w)
		970	{
		971	if (ev_is_active (w))
		972	return;
		973
		974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		975
		976	/* this formula differs from the one in periodic_reify because we do not always round up */
		977	if (w->interval)
624	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;	978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
625		979
626	ev_start ((W)w, ++atimercnt);	980	ev_start ((W)w, ++periodiccnt);
627	array_needsize (atimers, atimermax, atimercnt, );	981	array_needsize (periodics, periodicmax, periodiccnt, );
628	atimers [atimercnt - 1] = w;	982	periodics [periodiccnt - 1] = w;
629	upheap (atimers, atimercnt - 1);	983	upheap ((WT *)periodics, periodiccnt - 1);
630	}
631	else
632	{
633	w->at += now;
634
635	ev_start ((W)w, ++rtimercnt);
636	array_needsize (rtimers, rtimermax, rtimercnt, );
637	rtimers [rtimercnt - 1] = w;
638	upheap (rtimers, rtimercnt - 1);
639	}
640
641	}	984	}
642		985
643	void	986	void
644	evtimer_stop (struct ev_timer *w)	987	ev_periodic_stop (struct ev_periodic *w)
645	{	988	{
		989	ev_clear_pending ((W)w);
646	if (!ev_is_active (w))	990	if (!ev_is_active (w))
647	return;	991	return;
648		992
649	if (w->is_abs)
650	{
651	if (w->active < atimercnt--)	993	if (w->active < periodiccnt--)
652	{
653	atimers [w->active - 1] = atimers [atimercnt];
654	downheap (atimers, atimercnt, w->active - 1);
655	}
656	}	994	{
657	else	995	periodics [w->active - 1] = periodics [periodiccnt];
658	{	996	downheap ((WT *)periodics, periodiccnt, w->active - 1);
659	if (w->active < rtimercnt--)
660	{
661	rtimers [w->active - 1] = rtimers [rtimercnt];
662	downheap (rtimers, rtimercnt, w->active - 1);
663	}
664	}	997	}
665		998
666	ev_stop ((W)w);	999	ev_stop ((W)w);
667	}	1000	}
668		1001
669	void	1002	void
670	evsignal_start (struct ev_signal *w)	1003	ev_signal_start (struct ev_signal *w)
671	{	1004	{
672	if (ev_is_active (w))	1005	if (ev_is_active (w))
673	return;	1006	return;
		1007
		1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
674		1009
675	ev_start ((W)w, 1);	1010	ev_start ((W)w, 1);
676	array_needsize (signals, signalmax, w->signum, signals_init);	1011	array_needsize (signals, signalmax, w->signum, signals_init);
677	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
678		1013
…		…
685	sigaction (w->signum, &sa, 0);	1020	sigaction (w->signum, &sa, 0);
686	}	1021	}
687	}	1022	}
688		1023
689	void	1024	void
690	evsignal_stop (struct ev_signal *w)	1025	ev_signal_stop (struct ev_signal *w)
691	{	1026	{
		1027	ev_clear_pending ((W)w);
692	if (!ev_is_active (w))	1028	if (!ev_is_active (w))
693	return;	1029	return;
694		1030
695	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
696	ev_stop ((W)w);	1032	ev_stop ((W)w);
697		1033
698	if (!signals [w->signum - 1].head)	1034	if (!signals [w->signum - 1].head)
699	signal (w->signum, SIG_DFL);	1035	signal (w->signum, SIG_DFL);
700	}	1036	}
701		1037
		1038	void
702	void evidle_start (struct ev_idle *w)	1039	ev_idle_start (struct ev_idle *w)
703	{	1040	{
704	if (ev_is_active (w))	1041	if (ev_is_active (w))
705	return;	1042	return;
706		1043
707	ev_start ((W)w, ++idlecnt);	1044	ev_start ((W)w, ++idlecnt);
708	array_needsize (idles, idlemax, idlecnt, );	1045	array_needsize (idles, idlemax, idlecnt, );
709	idles [idlecnt - 1] = w;	1046	idles [idlecnt - 1] = w;
710	}	1047	}
711		1048
		1049	void
712	void evidle_stop (struct ev_idle *w)	1050	ev_idle_stop (struct ev_idle *w)
713	{	1051	{
		1052	ev_clear_pending ((W)w);
		1053	if (ev_is_active (w))
		1054	return;
		1055
714	idles [w->active - 1] = idles [--idlecnt];	1056	idles [w->active - 1] = idles [--idlecnt];
715	ev_stop ((W)w);	1057	ev_stop ((W)w);
716	}	1058	}
717		1059
		1060	void
		1061	ev_prepare_start (struct ev_prepare *w)
		1062	{
		1063	if (ev_is_active (w))
		1064	return;
		1065
		1066	ev_start ((W)w, ++preparecnt);
		1067	array_needsize (prepares, preparemax, preparecnt, );
		1068	prepares [preparecnt - 1] = w;
		1069	}
		1070
		1071	void
		1072	ev_prepare_stop (struct ev_prepare *w)
		1073	{
		1074	ev_clear_pending ((W)w);
		1075	if (ev_is_active (w))
		1076	return;
		1077
		1078	prepares [w->active - 1] = prepares [--preparecnt];
		1079	ev_stop ((W)w);
		1080	}
		1081
		1082	void
718	void evcheck_start (struct ev_check *w)	1083	ev_check_start (struct ev_check *w)
719	{	1084	{
720	if (ev_is_active (w))	1085	if (ev_is_active (w))
721	return;	1086	return;
722		1087
723	ev_start ((W)w, ++checkcnt);	1088	ev_start ((W)w, ++checkcnt);
724	array_needsize (checks, checkmax, checkcnt, );	1089	array_needsize (checks, checkmax, checkcnt, );
725	checks [checkcnt - 1] = w;	1090	checks [checkcnt - 1] = w;
726	}	1091	}
727		1092
		1093	void
728	void evcheck_stop (struct ev_check *w)	1094	ev_check_stop (struct ev_check *w)
729	{	1095	{
		1096	ev_clear_pending ((W)w);
		1097	if (ev_is_active (w))
		1098	return;
		1099
730	checks [w->active - 1] = checks [--checkcnt];	1100	checks [w->active - 1] = checks [--checkcnt];
731	ev_stop ((W)w);	1101	ev_stop ((W)w);
732	}	1102	}
733		1103
		1104	void
		1105	ev_child_start (struct ev_child *w)
		1106	{
		1107	if (ev_is_active (w))
		1108	return;
		1109
		1110	ev_start ((W)w, 1);
		1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1112	}
		1113
		1114	void
		1115	ev_child_stop (struct ev_child *w)
		1116	{
		1117	ev_clear_pending ((W)w);
		1118	if (ev_is_active (w))
		1119	return;
		1120
		1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1122	ev_stop ((W)w);
		1123	}
		1124
		1125	/*****************************************************************************/
		1126
		1127	struct ev_once
		1128	{
		1129	struct ev_io io;
		1130	struct ev_timer to;
		1131	void (cb)(int revents, void arg);
		1132	void *arg;
		1133	};
		1134
		1135	static void
		1136	once_cb (struct ev_once *once, int revents)
		1137	{
		1138	void (cb)(int revents, void arg) = once->cb;
		1139	void *arg = once->arg;
		1140
		1141	ev_io_stop (&once->io);
		1142	ev_timer_stop (&once->to);
		1143	free (once);
		1144
		1145	cb (revents, arg);
		1146	}
		1147
		1148	static void
		1149	once_cb_io (struct ev_io *w, int revents)
		1150	{
		1151	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
		1152	}
		1153
		1154	static void
		1155	once_cb_to (struct ev_timer *w, int revents)
		1156	{
		1157	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
		1158	}
		1159
		1160	void
		1161	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
		1162	{
		1163	struct ev_once *once = malloc (sizeof (struct ev_once));
		1164
		1165	if (!once)
		1166	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
		1167	else
		1168	{
		1169	once->cb = cb;
		1170	once->arg = arg;
		1171
		1172	ev_watcher_init (&once->io, once_cb_io);
		1173	if (fd >= 0)
		1174	{
		1175	ev_io_set (&once->io, fd, events);
		1176	ev_io_start (&once->io);
		1177	}
		1178
		1179	ev_watcher_init (&once->to, once_cb_to);
		1180	if (timeout >= 0.)
		1181	{
		1182	ev_timer_set (&once->to, timeout, 0.);
		1183	ev_timer_start (&once->to);
		1184	}
		1185	}
		1186	}
		1187
734	/*****************************************************************************/	1188	/*****************************************************************************/
735		1189
736	#if 0	1190	#if 0
737		1191
		1192	struct ev_io wio;
		1193
738	static void	1194	static void
739	sin_cb (struct ev_io *w, int revents)	1195	sin_cb (struct ev_io *w, int revents)
740	{	1196	{
741	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
742	}	1198	}
743		1199
744	static void	1200	static void
745	ocb (struct ev_timer *w, int revents)	1201	ocb (struct ev_timer *w, int revents)
746	{	1202	{
747	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
748	evtimer_stop (w);	1204	ev_timer_stop (w);
749	evtimer_start (w);	1205	ev_timer_start (w);
750	}	1206	}
751		1207
752	static void	1208	static void
753	scb (struct ev_signal *w, int revents)	1209	scb (struct ev_signal *w, int revents)
754	{	1210	{
755	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1212	ev_io_stop (&wio);
		1213	ev_io_start (&wio);
756	}	1214	}
757		1215
758	static void	1216	static void
759	gcb (struct ev_signal *w, int revents)	1217	gcb (struct ev_signal *w, int revents)
760	{	1218	{
761	fprintf (stderr, "generic %x\n", revents);	1219	fprintf (stderr, "generic %x\n", revents);
		1220
762	}	1221	}
763		1222
764	int main (void)	1223	int main (void)
765	{	1224	{
766	struct ev_io sin;
767
768	ev_init (0);	1225	ev_init (0);
769		1226
770	evw_init (&sin, sin_cb, 55);
771	evio_set (&sin, 0, EV_READ);	1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
772	evio_start (&sin);	1228	ev_io_start (&wio);
773		1229
774	struct ev_timer t[10000];	1230	struct ev_timer t[10000];
775		1231
776	#if 0	1232	#if 0
777	int i;	1233	int i;
778	for (i = 0; i < 10000; ++i)	1234	for (i = 0; i < 10000; ++i)
779	{	1235	{
780	struct ev_timer *w = t + i;	1236	struct ev_timer *w = t + i;
781	evw_init (w, ocb, i);	1237	ev_watcher_init (w, ocb, i);
782	evtimer_set_abs (w, drand48 (), 0.99775533);	1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
783	evtimer_start (w);	1239	ev_timer_start (w);
784	if (drand48 () < 0.5)	1240	if (drand48 () < 0.5)
785	evtimer_stop (w);	1241	ev_timer_stop (w);
786	}	1242	}
787	#endif	1243	#endif
788		1244
789	struct ev_timer t1;	1245	struct ev_timer t1;
790	evw_init (&t1, ocb, 0);	1246	ev_timer_init (&t1, ocb, 5, 10);
791	evtimer_set_abs (&t1, 5, 10);
792	evtimer_start (&t1);	1247	ev_timer_start (&t1);
793		1248
794	struct ev_signal sig;	1249	struct ev_signal sig;
795	evw_init (&sig, scb, 65535);
796	evsignal_set (&sig, SIGQUIT);	1250	ev_signal_init (&sig, scb, SIGQUIT);
797	evsignal_start (&sig);	1251	ev_signal_start (&sig);
798		1252
799	struct ev_check cw;	1253	struct ev_check cw;
800	evw_init (&cw, gcb, 0);	1254	ev_check_init (&cw, gcb);
801	evcheck_start (&cw);	1255	ev_check_start (&cw);
802		1256
803	struct ev_idle iw;	1257	struct ev_idle iw;
804	evw_init (&iw, gcb, 0);	1258	ev_idle_init (&iw, gcb);
805	evidle_start (&iw);	1259	ev_idle_start (&iw);
806		1260
807	ev_loop (0);	1261	ev_loop (0);
808		1262
809	return 0;	1263	return 0;
810	}	1264	}

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Comparing libev/ev.c (file contents): Revision 1.10 by root, Wed Oct 31 07:36:03 2007 UTC vs. Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.10 by root, Wed Oct 31 07:36:03 2007 UTC vs.
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC