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

Comparing libev/ev.c (file contents):
Revision 1.7 by root, Wed Oct 31 00:24:16 2007 UTC vs.
Revision 1.41 by root, Fri Nov 2 16:54:34 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
		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_REALTIME
		70	# define EV_USE_REALTIME 1
		71	#endif
		72
		73	/**/
		74
14	#ifdef CLOCK_MONOTONIC	75	#ifndef CLOCK_MONOTONIC
		76	# undef EV_USE_MONOTONIC
15	# define HAVE_MONOTONIC 1	77	# define EV_USE_MONOTONIC 0
16	#endif	78	#endif
17		79
		80	#ifndef CLOCK_REALTIME
		81	# undef EV_USE_REALTIME
18	#define HAVE_REALTIME 1	82	# define EV_USE_REALTIME 0
19	#define HAVE_EPOLL 1	83	#endif
20	#define HAVE_SELECT 1	84
		85	/**/
21		86
22	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	87	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
23	#define MAX_BLOCKTIME 60.	88	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		89	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		90	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
24		91
25	#include "ev.h"	92	#include "ev.h"
26		93
		94	#if __GNUC__ >= 3
		95	# define expect(expr,value) __builtin_expect ((expr),(value))
		96	# define inline inline
		97	#else
		98	# define expect(expr,value) (expr)
		99	# define inline static
		100	#endif
		101
		102	#define expect_false(expr) expect ((expr) != 0, 0)
		103	#define expect_true(expr) expect ((expr) != 0, 1)
		104
27	struct ev_watcher {	105	typedef struct ev_watcher *W;
28	EV_WATCHER (ev_watcher);
29	};
30
31	struct ev_watcher_list {	106	typedef struct ev_watcher_list *WL;
32	EV_WATCHER_LIST (ev_watcher_list);	107	typedef struct ev_watcher_time *WT;
33	};
34		108
35	static ev_tstamp now, diff; /* monotonic clock */	109	static ev_tstamp now_floor, now, diff; /* monotonic clock */
36	ev_tstamp ev_now;	110	ev_tstamp ev_now;
37	int ev_method;	111	int ev_method;
38		112
39	static int have_monotonic; /* runtime */	113	static int have_monotonic; /* runtime */
40		114
41	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	115	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
42	static void (*method_modify)(int fd, int oev, int nev);	116	static void (*method_modify)(int fd, int oev, int nev);
43	static void (*method_poll)(ev_tstamp timeout);	117	static void (*method_poll)(ev_tstamp timeout);
44		118
		119	/*****************************************************************************/
		120
45	ev_tstamp	121	ev_tstamp
46	ev_time (void)	122	ev_time (void)
47	{	123	{
48	#if HAVE_REALTIME	124	#if EV_USE_REALTIME
49	struct timespec ts;	125	struct timespec ts;
50	clock_gettime (CLOCK_REALTIME, &ts);	126	clock_gettime (CLOCK_REALTIME, &ts);
51	return ts.tv_sec + ts.tv_nsec * 1e-9;	127	return ts.tv_sec + ts.tv_nsec * 1e-9;
52	#else	128	#else
53	struct timeval tv;	129	struct timeval tv;
57	}	133	}
58		134
59	static ev_tstamp	135	static ev_tstamp
60	get_clock (void)	136	get_clock (void)
61	{	137	{
62	#if HAVE_MONOTONIC	138	#if EV_USE_MONOTONIC
63	if (have_monotonic)	139	if (expect_true (have_monotonic))
64	{	140	{
65	struct timespec ts;	141	struct timespec ts;
66	clock_gettime (CLOCK_MONOTONIC, &ts);	142	clock_gettime (CLOCK_MONOTONIC, &ts);
67	return ts.tv_sec + ts.tv_nsec * 1e-9;	143	return ts.tv_sec + ts.tv_nsec * 1e-9;
68	}	144	}
69	#endif	145	#endif
70		146
71	return ev_time ();	147	return ev_time ();
72	}	148	}
73		149
		150	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		151
74	#define array_needsize(base,cur,cnt,init) \	152	#define array_needsize(base,cur,cnt,init) \
75	if ((cnt) > cur) \	153	if (expect_false ((cnt) > cur)) \
76	{ \	154	{ \
77	int newcnt = cur ? cur << 1 : 16; \	155	int newcnt = cur; \
78	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	156	do \
		157	{ \
		158	newcnt = array_roundsize (base, newcnt << 1); \
		159	} \
		160	while ((cnt) > newcnt); \
		161	\
79	base = realloc (base, sizeof (base) (newcnt)); \	162	base = realloc (base, sizeof (base) (newcnt)); \
80	init (base + cur, newcnt - cur); \	163	init (base + cur, newcnt - cur); \
81	cur = newcnt; \	164	cur = newcnt; \
82	}	165	}
83		166
		167	/*****************************************************************************/
		168
84	typedef struct	169	typedef struct
85	{	170	{
86	struct ev_io *head;	171	struct ev_io *head;
87	unsigned char wev, rev; /* want, received event set */	172	unsigned char events;
		173	unsigned char reify;
88	} ANFD;	174	} ANFD;
89		175
90	static ANFD *anfds;	176	static ANFD *anfds;
91	static int anfdmax;	177	static int anfdmax;
92		178
93	static int *fdchanges;
94	static int fdchangemax, fdchangecnt;
95
96	static void	179	static void
97	anfds_init (ANFD *base, int count)	180	anfds_init (ANFD *base, int count)
98	{	181	{
99	while (count--)	182	while (count--)
100	{	183	{
101	base->head = 0;	184	base->head = 0;
102	base->wev = base->rev = EV_NONE;	185	base->events = EV_NONE;
		186	base->reify = 0;
		187
103	++base;	188	++base;
104	}	189	}
105	}	190	}
106		191
107	typedef struct	192	typedef struct
108	{	193	{
109	struct ev_watcher *w;	194	W w;
110	int events;	195	int events;
111	} ANPENDING;	196	} ANPENDING;
112		197
113	static ANPENDING *pendings;	198	static ANPENDING *pendings;
114	static int pendingmax, pendingcnt;	199	static int pendingmax, pendingcnt;
115		200
116	static void	201	static void
117	event (struct ev_watcher *w, int events)	202	event (W w, int events)
118	{	203	{
		204	if (w->pending)
		205	{
		206	pendings [w->pending - 1].events \|= events;
		207	return;
		208	}
		209
119	w->pending = ++pendingcnt;	210	w->pending = ++pendingcnt;
120	array_needsize (pendings, pendingmax, pendingcnt, );	211	array_needsize (pendings, pendingmax, pendingcnt, );
121	pendings [pendingcnt - 1].w = w;	212	pendings [pendingcnt - 1].w = w;
122	pendings [pendingcnt - 1].events = events;	213	pendings [pendingcnt - 1].events = events;
123	}	214	}
124		215
125	static void	216	static void
		217	queue_events (W *events, int eventcnt, int type)
		218	{
		219	int i;
		220
		221	for (i = 0; i < eventcnt; ++i)
		222	event (events [i], type);
		223	}
		224
		225	static void
126	fd_event (int fd, int events)	226	fd_event (int fd, int events)
127	{	227	{
128	ANFD *anfd = anfds + fd;	228	ANFD *anfd = anfds + fd;
129	struct ev_io *w;	229	struct ev_io *w;
130		230
131	for (w = anfd->head; w; w = w->next)	231	for (w = anfd->head; w; w = w->next)
132	{	232	{
133	int ev = w->events & events;	233	int ev = w->events & events;
134		234
135	if (ev)	235	if (ev)
136	event ((struct ev_watcher *)w, ev);	236	event ((W)w, ev);
		237	}
		238	}
		239
		240	/*****************************************************************************/
		241
		242	static int *fdchanges;
		243	static int fdchangemax, fdchangecnt;
		244
		245	static void
		246	fd_reify (void)
		247	{
		248	int i;
		249
		250	for (i = 0; i < fdchangecnt; ++i)
		251	{
		252	int fd = fdchanges [i];
		253	ANFD *anfd = anfds + fd;
		254	struct ev_io *w;
		255
		256	int events = 0;
		257
		258	for (w = anfd->head; w; w = w->next)
		259	events \|= w->events;
		260
		261	anfd->reify = 0;
		262
		263	if (anfd->events != events)
		264	{
		265	method_modify (fd, anfd->events, events);
		266	anfd->events = events;
		267	}
		268	}
		269
		270	fdchangecnt = 0;
		271	}
		272
		273	static void
		274	fd_change (int fd)
		275	{
		276	if (anfds [fd].reify \|\| fdchangecnt < 0)
		277	return;
		278
		279	anfds [fd].reify = 1;
		280
		281	++fdchangecnt;
		282	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		283	fdchanges [fdchangecnt - 1] = fd;
		284	}
		285
		286	static void
		287	fd_kill (int fd)
		288	{
		289	struct ev_io *w;
		290
		291	printf ("killing fd %d\n", fd);//D
		292	while ((w = anfds [fd].head))
		293	{
		294	ev_io_stop (w);
		295	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		296	}
		297	}
		298
		299	/* called on EBADF to verify fds */
		300	static void
		301	fd_ebadf (void)
		302	{
		303	int fd;
		304
		305	for (fd = 0; fd < anfdmax; ++fd)
		306	if (anfds [fd].events)
		307	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		308	fd_kill (fd);
		309	}
		310
		311	/* called on ENOMEM in select/poll to kill some fds and retry */
		312	static void
		313	fd_enomem (void)
		314	{
		315	int fd = anfdmax;
		316
		317	while (fd--)
		318	if (anfds [fd].events)
		319	{
		320	close (fd);
		321	fd_kill (fd);
		322	return;
137	}	323	}
138	}	324	}
139		325
		326	/*****************************************************************************/
		327
140	static struct ev_timer **atimers;	328	static struct ev_timer **timers;
141	static int atimermax, atimercnt;	329	static int timermax, timercnt;
142		330
143	static struct ev_timer **rtimers;	331	static struct ev_periodic **periodics;
144	static int rtimermax, rtimercnt;	332	static int periodicmax, periodiccnt;
145		333
146	static void	334	static void
147	upheap (struct ev_timer **timers, int k)	335	upheap (WT *timers, int k)
148	{	336	{
149	struct ev_timer *w = timers [k];	337	WT w = timers [k];
150		338
151	while (k && timers [k >> 1]->at > w->at)	339	while (k && timers [k >> 1]->at > w->at)
152	{	340	{
153	timers [k] = timers [k >> 1];	341	timers [k] = timers [k >> 1];
154	timers [k]->active = k + 1;	342	timers [k]->active = k + 1;
…		…
159	timers [k]->active = k + 1;	347	timers [k]->active = k + 1;
160		348
161	}	349	}
162		350
163	static void	351	static void
164	downheap (struct ev_timer **timers, int N, int k)	352	downheap (WT *timers, int N, int k)
165	{	353	{
166	struct ev_timer *w = timers [k];	354	WT w = timers [k];
167		355
168	while (k < (N >> 1))	356	while (k < (N >> 1))
169	{	357	{
170	int j = k << 1;	358	int j = k << 1;
171		359
…		…
182		370
183	timers [k] = w;	371	timers [k] = w;
184	timers [k]->active = k + 1;	372	timers [k]->active = k + 1;
185	}	373	}
186		374
		375	/*****************************************************************************/
		376
187	typedef struct	377	typedef struct
188	{	378	{
189	struct ev_signal *head;	379	struct ev_signal *head;
190	sig_atomic_t gotsig;	380	sig_atomic_t volatile gotsig;
191	} ANSIG;	381	} ANSIG;
192		382
193	static ANSIG *signals;	383	static ANSIG *signals;
194	static int signalmax;	384	static int signalmax;
195		385
196	static int sigpipe [2];	386	static int sigpipe [2];
197	static sig_atomic_t gotsig;	387	static sig_atomic_t volatile gotsig;
198	static struct ev_io sigev;	388	static struct ev_io sigev;
199		389
200	static void	390	static void
201	signals_init (ANSIG *base, int count)	391	signals_init (ANSIG *base, int count)
202	{	392	{
203	while (count--)	393	while (count--)
204	{	394	{
205	base->head = 0;	395	base->head = 0;
206	base->gotsig = 0;	396	base->gotsig = 0;
		397
207	++base;	398	++base;
208	}	399	}
209	}	400	}
210		401
211	static void	402	static void
…		…
214	signals [signum - 1].gotsig = 1;	405	signals [signum - 1].gotsig = 1;
215		406
216	if (!gotsig)	407	if (!gotsig)
217	{	408	{
218	gotsig = 1;	409	gotsig = 1;
219	write (sigpipe [1], &gotsig, 1);	410	write (sigpipe [1], &signum, 1);
220	}	411	}
221	}	412	}
222		413
223	static void	414	static void
224	sigcb (struct ev_io *iow, int revents)	415	sigcb (struct ev_io *iow, int revents)
225	{	416	{
226	struct ev_signal *w;	417	struct ev_signal *w;
227	int sig;	418	int signum;
228		419
		420	read (sigpipe [0], &revents, 1);
229	gotsig = 0;	421	gotsig = 0;
230	read (sigpipe [0], &revents, 1);
231		422
232	for (sig = signalmax; sig--; )	423	for (signum = signalmax; signum--; )
233	if (signals [sig].gotsig)	424	if (signals [signum].gotsig)
234	{	425	{
235	signals [sig].gotsig = 0;	426	signals [signum].gotsig = 0;
236		427
237	for (w = signals [sig].head; w; w = w->next)	428	for (w = signals [signum].head; w; w = w->next)
238	event ((struct ev_watcher *)w, EV_SIGNAL);	429	event ((W)w, EV_SIGNAL);
239	}	430	}
240	}	431	}
241		432
242	static void	433	static void
243	siginit (void)	434	siginit (void)
…		…
247		438
248	/* rather than sort out wether we really need nb, set it */	439	/* rather than sort out wether we really need nb, set it */
249	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	440	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
250	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	441	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
251		442
252	evio_set (&sigev, sigpipe [0], EV_READ);	443	ev_io_set (&sigev, sigpipe [0], EV_READ);
253	evio_start (&sigev);	444	ev_io_start (&sigev);
254	}	445	}
255		446
		447	/*****************************************************************************/
		448
		449	static struct ev_idle **idles;
		450	static int idlemax, idlecnt;
		451
		452	static struct ev_prepare **prepares;
		453	static int preparemax, preparecnt;
		454
		455	static struct ev_check **checks;
		456	static int checkmax, checkcnt;
		457
		458	/*****************************************************************************/
		459
		460	static struct ev_child *childs [PID_HASHSIZE];
		461	static struct ev_signal childev;
		462
		463	#ifndef WCONTINUED
		464	# define WCONTINUED 0
		465	#endif
		466
		467	static void
		468	childcb (struct ev_signal *sw, int revents)
		469	{
		470	struct ev_child *w;
		471	int pid, status;
		472
		473	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)
		474	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)
		475	if (w->pid == pid \|\| !w->pid)
		476	{
		477	w->status = status;
		478	event ((W)w, EV_CHILD);
		479	}
		480	}
		481
		482	/*****************************************************************************/
		483
256	#if HAVE_EPOLL	484	#if EV_USE_EPOLL
257	# include "ev_epoll.c"	485	# include "ev_epoll.c"
258	#endif	486	#endif
		487	#if EV_USE_POLL
		488	# include "ev_poll.c"
		489	#endif
259	#if HAVE_SELECT	490	#if EV_USE_SELECT
260	# include "ev_select.c"	491	# include "ev_select.c"
261	#endif	492	#endif
262		493
		494	int
		495	ev_version_major (void)
		496	{
		497	return EV_VERSION_MAJOR;
		498	}
		499
		500	int
		501	ev_version_minor (void)
		502	{
		503	return EV_VERSION_MINOR;
		504	}
		505
		506	/* return true if we are running with elevated privileges and ignore env variables */
		507	static int
		508	enable_secure ()
		509	{
		510	return getuid () != geteuid ()
		511	\|\| getgid () != getegid ();
		512	}
		513
263	int ev_init (int flags)	514	int ev_init (int methods)
264	{	515	{
265	#if HAVE_MONOTONIC
266	{
267	struct timespec ts;
268	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
269	have_monotonic = 1;
270	}
271	#endif
272
273	ev_now = ev_time ();
274	now = get_clock ();
275	diff = ev_now - now;
276
277	if (pipe (sigpipe))
278	return 0;
279
280	ev_method = EVMETHOD_NONE;
281	#if HAVE_EPOLL
282	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
283	#endif
284	#if HAVE_SELECT
285	if (ev_method == EVMETHOD_NONE) select_init (flags);
286	#endif
287
288	if (ev_method)	516	if (!ev_method)
		517	{
		518	#if EV_USE_MONOTONIC
289	{	519	{
		520	struct timespec ts;
		521	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		522	have_monotonic = 1;
		523	}
		524	#endif
		525
		526	ev_now = ev_time ();
		527	now = get_clock ();
		528	now_floor = now;
		529	diff = ev_now - now;
		530
		531	if (pipe (sigpipe))
		532	return 0;
		533
		534	if (methods == EVMETHOD_AUTO)
		535	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		536	methods = atoi (getenv ("LIBEV_METHODS"));
		537	else
		538	methods = EVMETHOD_ANY;
		539
		540	ev_method = 0;
		541	#if EV_USE_EPOLL
		542	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
		543	#endif
		544	#if EV_USE_POLL
		545	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		546	#endif
		547	#if EV_USE_SELECT
		548	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
		549	#endif
		550
		551	if (ev_method)
		552	{
290	evw_init (&sigev, sigcb, 0);	553	ev_watcher_init (&sigev, sigcb);
291	siginit ();	554	siginit ();
		555
		556	ev_signal_init (&childev, childcb, SIGCHLD);
		557	ev_signal_start (&childev);
		558	}
292	}	559	}
293		560
294	return ev_method;	561	return ev_method;
295	}	562	}
296		563
297	void ev_prefork (void)	564	/*****************************************************************************/
298	{
299	}
300		565
		566	void
		567	ev_fork_prepare (void)
		568	{
		569	/* nop */
		570	}
		571
		572	void
301	void ev_postfork_parent (void)	573	ev_fork_parent (void)
302	{	574	{
		575	/* nop */
303	}	576	}
304		577
		578	void
305	void ev_postfork_child (void)	579	ev_fork_child (void)
306	{	580	{
307	#if HAVE_EPOLL	581	#if EV_USE_EPOLL
308	if (ev_method == EVMETHOD_EPOLL)	582	if (ev_method == EVMETHOD_EPOLL)
309	epoll_postfork_child ();	583	epoll_postfork_child ();
310	#endif	584	#endif
311		585
312	evio_stop (&sigev);	586	ev_io_stop (&sigev);
313	close (sigpipe [0]);	587	close (sigpipe [0]);
314	close (sigpipe [1]);	588	close (sigpipe [1]);
315	pipe (sigpipe);	589	pipe (sigpipe);
316	siginit ();	590	siginit ();
317	}	591	}
318		592
319	static void	593	/*****************************************************************************/
320	fd_reify (void)
321	{
322	int i;
323		594
324	for (i = 0; i < fdchangecnt; ++i)
325	{
326	int fd = fdchanges [i];
327	ANFD *anfd = anfds + fd;
328	struct ev_io *w;
329
330	int wev = 0;
331
332	for (w = anfd->head; w; w = w->next)
333	wev \|= w->events;
334
335	if (anfd->wev != wev)
336	{
337	method_modify (fd, anfd->wev, wev);
338	anfd->wev = wev;
339	}
340	}
341
342	fdchangecnt = 0;
343	}
344
345	static void	595	static void
346	call_pending ()	596	call_pending (void)
347	{	597	{
348	int i;	598	while (pendingcnt)
349
350	for (i = 0; i < pendingcnt; ++i)
351	{	599	{
352	ANPENDING *p = pendings + i;	600	ANPENDING *p = pendings + --pendingcnt;
353		601
354	if (p->w)	602	if (p->w)
355	{	603	{
356	p->w->pending = 0;	604	p->w->pending = 0;
357	p->w->cb (p->w, p->events);	605	p->w->cb (p->w, p->events);
358	}	606	}
359	}	607	}
360
361	pendingcnt = 0;
362	}	608	}
363		609
364	static void	610	static void
365	timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now)	611	timers_reify (void)
366	{	612	{
367	while (timercnt && timers [0]->at <= now)	613	while (timercnt && timers [0]->at <= now)
368	{	614	{
369	struct ev_timer *w = timers [0];	615	struct ev_timer *w = timers [0];
370		616
371	/* first reschedule or stop timer */	617	/* first reschedule or stop timer */
372	if (w->repeat)	618	if (w->repeat)
373	{	619	{
374	if (w->is_abs)	620	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
375	w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat;
376	else
377	w->at = now + w->repeat;	621	w->at = now + w->repeat;
378
379	assert (w->at > now);
380
381	downheap (timers, timercnt, 0);	622	downheap ((WT *)timers, timercnt, 0);
382	}	623	}
383	else	624	else
384	{
385	evtimer_stop (w); /* nonrepeating: stop timer */	625	ev_timer_stop (w); /* nonrepeating: stop timer */
386	--timercnt; /* maybe pass by reference instead? */	626
		627	event ((W)w, EV_TIMEOUT);
		628	}
		629	}
		630
		631	static void
		632	periodics_reify (void)
		633	{
		634	while (periodiccnt && periodics [0]->at <= ev_now)
		635	{
		636	struct ev_periodic *w = periodics [0];
		637
		638	/* first reschedule or stop timer */
		639	if (w->interval)
387	}	640	{
		641	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
		642	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
		643	downheap ((WT *)periodics, periodiccnt, 0);
		644	}
		645	else
		646	ev_periodic_stop (w); /* nonrepeating: stop timer */
388		647
389	event ((struct ev_watcher *)w, EV_TIMEOUT);	648	event ((W)w, EV_PERIODIC);
390	}	649	}
391	}	650	}
392		651
393	static void	652	static void
394	time_update ()	653	periodics_reschedule (ev_tstamp diff)
395	{	654	{
396	int i;	655	int i;
397	ev_now = ev_time ();
398		656
399	if (have_monotonic)	657	/* adjust periodics after time jump */
		658	for (i = 0; i < periodiccnt; ++i)
400	{	659	{
401	ev_tstamp odiff = diff;	660	struct ev_periodic *w = periodics [i];
402		661
403	/* detecting time jumps is much more difficult */	662	if (w->interval)
404	for (i = 2; --i; ) /* loop a few times, before making important decisions */
405	{
406	now = get_clock ();
407	diff = ev_now - now;
408
409	if (fabs (odiff - diff) < MIN_TIMEJUMP)
410	return; /* all is well */
411
412	ev_now = ev_time ();
413	}	663	{
		664	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
414		665
415	/* time jump detected, reschedule atimers */	666	if (fabs (diff) >= 1e-4)
416	for (i = 0; i < atimercnt; ++i)	667	{
		668	ev_periodic_stop (w);
		669	ev_periodic_start (w);
		670
		671	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		672	}
417	{	673	}
418	struct ev_timer *w = atimers [i];	674	}
419	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;	675	}
420	}	676
		677	static int
		678	time_update_monotonic (void)
		679	{
		680	now = get_clock ();
		681
		682	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		683	{
		684	ev_now = now + diff;
		685	return 0;
421	}	686	}
422	else	687	else
423	{	688	{
		689	now_floor = now;
		690	ev_now = ev_time ();
		691	return 1;
		692	}
		693	}
		694
		695	static void
		696	time_update (void)
		697	{
		698	int i;
		699
		700	#if EV_USE_MONOTONIC
		701	if (expect_true (have_monotonic))
		702	{
		703	if (time_update_monotonic ())
		704	{
		705	ev_tstamp odiff = diff;
		706
		707	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		708	{
		709	diff = ev_now - now;
		710
		711	if (fabs (odiff - diff) < MIN_TIMEJUMP)
		712	return; /* all is well */
		713
		714	ev_now = ev_time ();
		715	now = get_clock ();
		716	now_floor = now;
		717	}
		718
		719	periodics_reschedule (diff - odiff);
		720	/* no timer adjustment, as the monotonic clock doesn't jump */
		721	}
		722	}
		723	else
		724	#endif
		725	{
		726	ev_now = ev_time ();
		727
424	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	728	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
425	/* time jump detected, adjust rtimers */	729	{
		730	periodics_reschedule (ev_now - now);
		731
		732	/* adjust timers. this is easy, as the offset is the same for all */
426	for (i = 0; i < rtimercnt; ++i)	733	for (i = 0; i < timercnt; ++i)
427	rtimers [i]->at += ev_now - now;	734	timers [i]->at += diff;
		735	}
428		736
429	now = ev_now;	737	now = ev_now;
430	}	738	}
431	}	739	}
432		740
433	int ev_loop_done;	741	int ev_loop_done;
434		742
435	void ev_loop (int flags)	743	void ev_loop (int flags)
436	{	744	{
437	double block;	745	double block;
438	ev_loop_done = flags & EVLOOP_ONESHOT;	746	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
439		747
440	do	748	do
441	{	749	{
		750	/* queue check watchers (and execute them) */
		751	if (expect_false (preparecnt))
		752	{
		753	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		754	call_pending ();
		755	}
		756
442	/* update fd-related kernel structures */	757	/* update fd-related kernel structures */
443	fd_reify ();	758	fd_reify ();
444		759
445	/* calculate blocking time */	760	/* calculate blocking time */
		761
		762	/* we only need this for !monotonic clockor timers, but as we basically
		763	always have timers, we just calculate it always */
		764	#if EV_USE_MONOTONIC
		765	if (expect_true (have_monotonic))
		766	time_update_monotonic ();
		767	else
		768	#endif
		769	{
		770	ev_now = ev_time ();
		771	now = ev_now;
		772	}
		773
446	if (flags & EVLOOP_NONBLOCK)	774	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
447	block = 0.;	775	block = 0.;
448	else	776	else
449	{	777	{
450	block = MAX_BLOCKTIME;	778	block = MAX_BLOCKTIME;
451		779
452	if (rtimercnt)	780	if (timercnt)
453	{	781	{
454	ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge;	782	ev_tstamp to = timers [0]->at - now + method_fudge;
455	if (block > to) block = to;	783	if (block > to) block = to;
456	}	784	}
457		785
458	if (atimercnt)	786	if (periodiccnt)
459	{	787	{
460	ev_tstamp to = atimers [0]->at - ev_time () + method_fudge;	788	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;
461	if (block > to) block = to;	789	if (block > to) block = to;
462	}	790	}
463		791
464	if (block < 0.) block = 0.;	792	if (block < 0.) block = 0.;
465	}	793	}
…		…
467	method_poll (block);	795	method_poll (block);
468		796
469	/* update ev_now, do magic */	797	/* update ev_now, do magic */
470	time_update ();	798	time_update ();
471		799
472	/* put pending timers into pendign queue and reschedule them */	800	/* queue pending timers and reschedule them */
473	/* absolute timers first */	801	timers_reify (); /* relative timers called last */
474	timers_reify (atimers, atimercnt, ev_now);	802	periodics_reify (); /* absolute timers called first */
475	/* relative timers second */	803
476	timers_reify (rtimers, rtimercnt, now);	804	/* queue idle watchers unless io or timers are pending */
		805	if (!pendingcnt)
		806	queue_events ((W *)idles, idlecnt, EV_IDLE);
		807
		808	/* queue check watchers, to be executed first */
		809	if (checkcnt)
		810	queue_events ((W *)checks, checkcnt, EV_CHECK);
477		811
478	call_pending ();	812	call_pending ();
479	}	813	}
480	while (!ev_loop_done);	814	while (!ev_loop_done);
481	}
482		815
		816	if (ev_loop_done != 2)
		817	ev_loop_done = 0;
		818	}
		819
		820	/*****************************************************************************/
		821
483	static void	822	static void
484	wlist_add (struct ev_watcher_list *head, struct ev_watcher_list elem)	823	wlist_add (WL *head, WL elem)
485	{	824	{
486	elem->next = *head;	825	elem->next = *head;
487	*head = elem;	826	*head = elem;
488	}	827	}
489		828
490	static void	829	static void
491	wlist_del (struct ev_watcher_list *head, struct ev_watcher_list elem)	830	wlist_del (WL *head, WL elem)
492	{	831	{
493	while (*head)	832	while (*head)
494	{	833	{
495	if (*head == elem)	834	if (*head == elem)
496	{	835	{
…		…
501	head = &(*head)->next;	840	head = &(*head)->next;
502	}	841	}
503	}	842	}
504		843
505	static void	844	static void
506	ev_start (struct ev_watcher *w, int active)	845	ev_clear_pending (W w)
507	{	846	{
		847	if (w->pending)
		848	{
		849	pendings [w->pending - 1].w = 0;
508	w->pending = 0;	850	w->pending = 0;
		851	}
		852	}
		853
		854	static void
		855	ev_start (W w, int active)
		856	{
509	w->active = active;	857	w->active = active;
510	}	858	}
511		859
512	static void	860	static void
513	ev_stop (struct ev_watcher *w)	861	ev_stop (W w)
514	{	862	{
515	if (w->pending)
516	pendings [w->pending - 1].w = 0;
517
518	w->active = 0;	863	w->active = 0;
519	/* nop */
520	}	864	}
521		865
		866	/*****************************************************************************/
		867
522	void	868	void
523	evio_start (struct ev_io *w)	869	ev_io_start (struct ev_io *w)
524	{	870	{
		871	int fd = w->fd;
		872
525	if (ev_is_active (w))	873	if (ev_is_active (w))
526	return;	874	return;
527		875
528	int fd = w->fd;	876	assert (("ev_io_start called with negative fd", fd >= 0));
529		877
530	ev_start ((struct ev_watcher *)w, 1);	878	ev_start ((W)w, 1);
531	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	879	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
532	wlist_add ((struct ev_watcher_list *)&anfds[fd].head, (struct ev_watcher_list )w);	880	wlist_add ((WL *)&anfds[fd].head, (WL)w);
533		881
534	++fdchangecnt;	882	fd_change (fd);
535	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
536	fdchanges [fdchangecnt - 1] = fd;
537	}	883	}
538		884
539	void	885	void
540	evio_stop (struct ev_io *w)	886	ev_io_stop (struct ev_io *w)
541	{	887	{
		888	ev_clear_pending ((W)w);
542	if (!ev_is_active (w))	889	if (!ev_is_active (w))
543	return;	890	return;
544		891
545	wlist_del ((struct ev_watcher_list *)&anfds[w->fd].head, (struct ev_watcher_list )w);	892	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
546	ev_stop ((struct ev_watcher *)w);	893	ev_stop ((W)w);
547		894
548	++fdchangecnt;	895	fd_change (w->fd);
549	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
550	fdchanges [fdchangecnt - 1] = w->fd;
551	}	896	}
552		897
553	void	898	void
554	evtimer_start (struct ev_timer *w)	899	ev_timer_start (struct ev_timer *w)
555	{	900	{
556	if (ev_is_active (w))	901	if (ev_is_active (w))
557	return;	902	return;
558		903
559	if (w->is_abs)	904	w->at += now;
		905
		906	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		907
		908	ev_start ((W)w, ++timercnt);
		909	array_needsize (timers, timermax, timercnt, );
		910	timers [timercnt - 1] = w;
		911	upheap ((WT *)timers, timercnt - 1);
		912	}
		913
		914	void
		915	ev_timer_stop (struct ev_timer *w)
		916	{
		917	ev_clear_pending ((W)w);
		918	if (!ev_is_active (w))
		919	return;
		920
		921	if (w->active < timercnt--)
		922	{
		923	timers [w->active - 1] = timers [timercnt];
		924	downheap ((WT *)timers, timercnt, w->active - 1);
560	{	925	}
561	/* this formula differs from the one in timer_reify becuse we do not round up */	926
		927	w->at = w->repeat;
		928
		929	ev_stop ((W)w);
		930	}
		931
		932	void
		933	ev_timer_again (struct ev_timer *w)
		934	{
		935	if (ev_is_active (w))
		936	{
562	if (w->repeat)	937	if (w->repeat)
		938	{
		939	w->at = now + w->repeat;
		940	downheap ((WT *)timers, timercnt, w->active - 1);
		941	}
		942	else
		943	ev_timer_stop (w);
		944	}
		945	else if (w->repeat)
		946	ev_timer_start (w);
		947	}
		948
		949	void
		950	ev_periodic_start (struct ev_periodic *w)
		951	{
		952	if (ev_is_active (w))
		953	return;
		954
		955	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		956
		957	/* this formula differs from the one in periodic_reify because we do not always round up */
		958	if (w->interval)
563	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;	959	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
564		960
565	ev_start ((struct ev_watcher *)w, ++atimercnt);	961	ev_start ((W)w, ++periodiccnt);
566	array_needsize (atimers, atimermax, atimercnt, );	962	array_needsize (periodics, periodicmax, periodiccnt, );
567	atimers [atimercnt - 1] = w;	963	periodics [periodiccnt - 1] = w;
568	upheap (atimers, atimercnt - 1);	964	upheap ((WT *)periodics, periodiccnt - 1);
569	}
570	else
571	{
572	w->at += now;
573
574	ev_start ((struct ev_watcher *)w, ++rtimercnt);
575	array_needsize (rtimers, rtimermax, rtimercnt, );
576	rtimers [rtimercnt - 1] = w;
577	upheap (rtimers, rtimercnt - 1);
578	}
579
580	}	965	}
581		966
582	void	967	void
583	evtimer_stop (struct ev_timer *w)	968	ev_periodic_stop (struct ev_periodic *w)
584	{	969	{
		970	ev_clear_pending ((W)w);
585	if (!ev_is_active (w))	971	if (!ev_is_active (w))
586	return;	972	return;
587		973
588	if (w->is_abs)
589	{
590	if (w->active < atimercnt--)	974	if (w->active < periodiccnt--)
591	{
592	atimers [w->active - 1] = atimers [atimercnt];
593	downheap (atimers, atimercnt, w->active - 1);
594	}
595	}	975	{
596	else	976	periodics [w->active - 1] = periodics [periodiccnt];
		977	downheap ((WT *)periodics, periodiccnt, w->active - 1);
597	{	978	}
598	if (w->active < rtimercnt--)
599	{
600	rtimers [w->active - 1] = rtimers [rtimercnt];
601	downheap (rtimers, rtimercnt, w->active - 1);
602	}
603	}
604		979
605	ev_stop ((struct ev_watcher *)w);	980	ev_stop ((W)w);
606	}	981	}
607		982
608	void	983	void
609	evsignal_start (struct ev_signal *w)	984	ev_signal_start (struct ev_signal *w)
610	{	985	{
611	if (ev_is_active (w))	986	if (ev_is_active (w))
612	return;	987	return;
613		988
614	ev_start ((struct ev_watcher *)w, 1);	989	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		990
		991	ev_start ((W)w, 1);
615	array_needsize (signals, signalmax, w->signum, signals_init);	992	array_needsize (signals, signalmax, w->signum, signals_init);
616	wlist_add ((struct ev_watcher_list *)&signals [w->signum - 1].head, (struct ev_watcher_list )w);	993	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
617		994
618	if (!w->next)	995	if (!w->next)
619	{	996	{
620	struct sigaction sa;	997	struct sigaction sa;
621	sa.sa_handler = sighandler;	998	sa.sa_handler = sighandler;
…		…
624	sigaction (w->signum, &sa, 0);	1001	sigaction (w->signum, &sa, 0);
625	}	1002	}
626	}	1003	}
627		1004
628	void	1005	void
629	evsignal_stop (struct ev_signal *w)	1006	ev_signal_stop (struct ev_signal *w)
630	{	1007	{
		1008	ev_clear_pending ((W)w);
631	if (!ev_is_active (w))	1009	if (!ev_is_active (w))
632	return;	1010	return;
633		1011
634	wlist_del ((struct ev_watcher_list *)&signals [w->signum - 1].head, (struct ev_watcher_list )w);	1012	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
635	ev_stop ((struct ev_watcher *)w);	1013	ev_stop ((W)w);
636		1014
637	if (!signals [w->signum - 1].head)	1015	if (!signals [w->signum - 1].head)
638	signal (w->signum, SIG_DFL);	1016	signal (w->signum, SIG_DFL);
639	}	1017	}
640		1018
		1019	void
		1020	ev_idle_start (struct ev_idle *w)
		1021	{
		1022	if (ev_is_active (w))
		1023	return;
		1024
		1025	ev_start ((W)w, ++idlecnt);
		1026	array_needsize (idles, idlemax, idlecnt, );
		1027	idles [idlecnt - 1] = w;
		1028	}
		1029
		1030	void
		1031	ev_idle_stop (struct ev_idle *w)
		1032	{
		1033	ev_clear_pending ((W)w);
		1034	if (ev_is_active (w))
		1035	return;
		1036
		1037	idles [w->active - 1] = idles [--idlecnt];
		1038	ev_stop ((W)w);
		1039	}
		1040
		1041	void
		1042	ev_prepare_start (struct ev_prepare *w)
		1043	{
		1044	if (ev_is_active (w))
		1045	return;
		1046
		1047	ev_start ((W)w, ++preparecnt);
		1048	array_needsize (prepares, preparemax, preparecnt, );
		1049	prepares [preparecnt - 1] = w;
		1050	}
		1051
		1052	void
		1053	ev_prepare_stop (struct ev_prepare *w)
		1054	{
		1055	ev_clear_pending ((W)w);
		1056	if (ev_is_active (w))
		1057	return;
		1058
		1059	prepares [w->active - 1] = prepares [--preparecnt];
		1060	ev_stop ((W)w);
		1061	}
		1062
		1063	void
		1064	ev_check_start (struct ev_check *w)
		1065	{
		1066	if (ev_is_active (w))
		1067	return;
		1068
		1069	ev_start ((W)w, ++checkcnt);
		1070	array_needsize (checks, checkmax, checkcnt, );
		1071	checks [checkcnt - 1] = w;
		1072	}
		1073
		1074	void
		1075	ev_check_stop (struct ev_check *w)
		1076	{
		1077	ev_clear_pending ((W)w);
		1078	if (ev_is_active (w))
		1079	return;
		1080
		1081	checks [w->active - 1] = checks [--checkcnt];
		1082	ev_stop ((W)w);
		1083	}
		1084
		1085	void
		1086	ev_child_start (struct ev_child *w)
		1087	{
		1088	if (ev_is_active (w))
		1089	return;
		1090
		1091	ev_start ((W)w, 1);
		1092	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1093	}
		1094
		1095	void
		1096	ev_child_stop (struct ev_child *w)
		1097	{
		1098	ev_clear_pending ((W)w);
		1099	if (ev_is_active (w))
		1100	return;
		1101
		1102	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1103	ev_stop ((W)w);
		1104	}
		1105
641	/*****************************************************************************/	1106	/*****************************************************************************/
		1107
		1108	struct ev_once
		1109	{
		1110	struct ev_io io;
		1111	struct ev_timer to;
		1112	void (cb)(int revents, void arg);
		1113	void *arg;
		1114	};
		1115
		1116	static void
		1117	once_cb (struct ev_once *once, int revents)
		1118	{
		1119	void (cb)(int revents, void arg) = once->cb;
		1120	void *arg = once->arg;
		1121
		1122	ev_io_stop (&once->io);
		1123	ev_timer_stop (&once->to);
		1124	free (once);
		1125
		1126	cb (revents, arg);
		1127	}
		1128
		1129	static void
		1130	once_cb_io (struct ev_io *w, int revents)
		1131	{
		1132	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
		1133	}
		1134
		1135	static void
		1136	once_cb_to (struct ev_timer *w, int revents)
		1137	{
		1138	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
		1139	}
		1140
		1141	void
		1142	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
		1143	{
		1144	struct ev_once *once = malloc (sizeof (struct ev_once));
		1145
		1146	if (!once)
		1147	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
		1148	else
		1149	{
		1150	once->cb = cb;
		1151	once->arg = arg;
		1152
		1153	ev_watcher_init (&once->io, once_cb_io);
		1154	if (fd >= 0)
		1155	{
		1156	ev_io_set (&once->io, fd, events);
		1157	ev_io_start (&once->io);
		1158	}
		1159
		1160	ev_watcher_init (&once->to, once_cb_to);
		1161	if (timeout >= 0.)
		1162	{
		1163	ev_timer_set (&once->to, timeout, 0.);
		1164	ev_timer_start (&once->to);
		1165	}
		1166	}
		1167	}
		1168
		1169	/*****************************************************************************/
		1170
642	#if 1	1171	#if 0
		1172
		1173	struct ev_io wio;
643		1174
644	static void	1175	static void
645	sin_cb (struct ev_io *w, int revents)	1176	sin_cb (struct ev_io *w, int revents)
646	{	1177	{
647	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1178	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
…		…
649		1180
650	static void	1181	static void
651	ocb (struct ev_timer *w, int revents)	1182	ocb (struct ev_timer *w, int revents)
652	{	1183	{
653	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1184	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
654	evtimer_stop (w);	1185	ev_timer_stop (w);
655	evtimer_start (w);	1186	ev_timer_start (w);
656	}	1187	}
657		1188
658	static void	1189	static void
659	scb (struct ev_signal *w, int revents)	1190	scb (struct ev_signal *w, int revents)
660	{	1191	{
661	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1192	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1193	ev_io_stop (&wio);
		1194	ev_io_start (&wio);
		1195	}
		1196
		1197	static void
		1198	gcb (struct ev_signal *w, int revents)
		1199	{
		1200	fprintf (stderr, "generic %x\n", revents);
		1201
662	}	1202	}
663		1203
664	int main (void)	1204	int main (void)
665	{	1205	{
666	struct ev_io sin;
667
668	ev_init (0);	1206	ev_init (0);
669		1207
670	evw_init (&sin, sin_cb, 55);
671	evio_set (&sin, 0, EV_READ);	1208	ev_io_init (&wio, sin_cb, 0, EV_READ);
672	evio_start (&sin);	1209	ev_io_start (&wio);
673		1210
674	struct ev_timer t[10000];	1211	struct ev_timer t[10000];
675		1212
676	#if 0	1213	#if 0
677	int i;	1214	int i;
678	for (i = 0; i < 10000; ++i)	1215	for (i = 0; i < 10000; ++i)
679	{	1216	{
680	struct ev_timer *w = t + i;	1217	struct ev_timer *w = t + i;
681	evw_init (w, ocb, i);	1218	ev_watcher_init (w, ocb, i);
682	evtimer_set_abs (w, drand48 (), 0.99775533);	1219	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
683	evtimer_start (w);	1220	ev_timer_start (w);
684	if (drand48 () < 0.5)	1221	if (drand48 () < 0.5)
685	evtimer_stop (w);	1222	ev_timer_stop (w);
686	}	1223	}
687	#endif	1224	#endif
688		1225
689	struct ev_timer t1;	1226	struct ev_timer t1;
690	evw_init (&t1, ocb, 0);	1227	ev_timer_init (&t1, ocb, 5, 10);
691	evtimer_set_abs (&t1, 5, 10);
692	evtimer_start (&t1);	1228	ev_timer_start (&t1);
693		1229
694	struct ev_signal sig;	1230	struct ev_signal sig;
695	evw_init (&sig, scb, 65535);
696	evsignal_set (&sig, SIGQUIT);	1231	ev_signal_init (&sig, scb, SIGQUIT);
697	evsignal_start (&sig);	1232	ev_signal_start (&sig);
		1233
		1234	struct ev_check cw;
		1235	ev_check_init (&cw, gcb);
		1236	ev_check_start (&cw);
		1237
		1238	struct ev_idle iw;
		1239	ev_idle_init (&iw, gcb);
		1240	ev_idle_start (&iw);
698		1241
699	ev_loop (0);	1242	ev_loop (0);
700		1243
701	return 0;	1244	return 0;
702	}	1245	}

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Comparing libev/ev.c (file contents): Revision 1.7 by root, Wed Oct 31 00:24:16 2007 UTC vs. Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.7 by root, Wed Oct 31 00:24:16 2007 UTC vs.
Revision 1.41 by root, Fri Nov 2 16:54:34 2007 UTC