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Comparing libev/ev.c (file contents):
Revision 1.8 by root, Wed Oct 31 00:32:33 2007 UTC vs.
Revision 1.43 by root, Fri Nov 2 20:21:33 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
		105	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		106	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		107
27	struct ev_watcher {	108	typedef struct ev_watcher *W;
28	EV_WATCHER (ev_watcher);
29	};
30
31	struct ev_watcher_list {	109	typedef struct ev_watcher_list *WL;
32	EV_WATCHER_LIST (ev_watcher_list);	110	typedef struct ev_watcher_time *WT;
33	};
34		111
35	static ev_tstamp now, diff; /* monotonic clock */	112	static ev_tstamp now_floor, now, diff; /* monotonic clock */
36	ev_tstamp ev_now;	113	ev_tstamp ev_now;
37	int ev_method;	114	int ev_method;
38		115
39	static int have_monotonic; /* runtime */	116	static int have_monotonic; /* runtime */
40		117
…		…
45	/*****************************************************************************/	122	/*****************************************************************************/
46		123
47	ev_tstamp	124	ev_tstamp
48	ev_time (void)	125	ev_time (void)
49	{	126	{
50	#if HAVE_REALTIME	127	#if EV_USE_REALTIME
51	struct timespec ts;	128	struct timespec ts;
52	clock_gettime (CLOCK_REALTIME, &ts);	129	clock_gettime (CLOCK_REALTIME, &ts);
53	return ts.tv_sec + ts.tv_nsec * 1e-9;	130	return ts.tv_sec + ts.tv_nsec * 1e-9;
54	#else	131	#else
55	struct timeval tv;	132	struct timeval tv;
…		…
59	}	136	}
60		137
61	static ev_tstamp	138	static ev_tstamp
62	get_clock (void)	139	get_clock (void)
63	{	140	{
64	#if HAVE_MONOTONIC	141	#if EV_USE_MONOTONIC
65	if (have_monotonic)	142	if (expect_true (have_monotonic))
66	{	143	{
67	struct timespec ts;	144	struct timespec ts;
68	clock_gettime (CLOCK_MONOTONIC, &ts);	145	clock_gettime (CLOCK_MONOTONIC, &ts);
69	return ts.tv_sec + ts.tv_nsec * 1e-9;	146	return ts.tv_sec + ts.tv_nsec * 1e-9;
70	}	147	}
71	#endif	148	#endif
72		149
73	return ev_time ();	150	return ev_time ();
74	}	151	}
75		152
		153	#define array_roundsize(base,n) ((n) | 4 & ~3)
		154
76	#define array_needsize(base,cur,cnt,init) \	155	#define array_needsize(base,cur,cnt,init) \
77	if ((cnt) > cur) \	156	if (expect_false ((cnt) > cur)) \
78	{ \	157	{ \
79	int newcnt = cur ? cur << 1 : 16; \	158	int newcnt = cur; \
80	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	159	do \
		160	{ \
		161	newcnt = array_roundsize (base, newcnt << 1); \
		162	} \
		163	while ((cnt) > newcnt); \
		164	\
81	base = realloc (base, sizeof (*base) * (newcnt)); \	165	base = realloc (base, sizeof (*base) * (newcnt)); \
82	init (base + cur, newcnt - cur); \	166	init (base + cur, newcnt - cur); \
83	cur = newcnt; \	167	cur = newcnt; \
84	}	168	}
85		169
86	/*****************************************************************************/	170	/*****************************************************************************/
87		171
88	typedef struct	172	typedef struct
89	{	173	{
90	struct ev_io *head;	174	struct ev_io *head;
91	unsigned char wev, rev; /* want, received event set */	175	unsigned char events;
		176	unsigned char reify;
92	} ANFD;	177	} ANFD;
93		178
94	static ANFD *anfds;	179	static ANFD *anfds;
95	static int anfdmax;	180	static int anfdmax;
96		181
		182	static void
		183	anfds_init (ANFD *base, int count)
		184	{
		185	while (count--)
		186	{
		187	base->head = 0;
		188	base->events = EV_NONE;
		189	base->reify = 0;
		190
		191	++base;
		192	}
		193	}
		194
		195	typedef struct
		196	{
		197	W w;
		198	int events;
		199	} ANPENDING;
		200
		201	static ANPENDING *pendings [NUMPRI];
		202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
		203
		204	static void
		205	event (W w, int events)
		206	{
		207	if (w->pending)
		208	{
		209	pendings [ABSPRI (w)][w->pending - 1].events |= events;
		210	return;
		211	}
		212
		213	w->pending = ++pendingcnt [ABSPRI (w)];
		214	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
		215	pendings [ABSPRI (w)][w->pending - 1].w = w;
		216	pendings [ABSPRI (w)][w->pending - 1].events = events;
		217	}
		218
		219	static void
		220	queue_events (W *events, int eventcnt, int type)
		221	{
		222	int i;
		223
		224	for (i = 0; i < eventcnt; ++i)
		225	event (events [i], type);
		226	}
		227
		228	static void
		229	fd_event (int fd, int events)
		230	{
		231	ANFD *anfd = anfds + fd;
		232	struct ev_io *w;
		233
		234	for (w = anfd->head; w; w = w->next)
		235	{
		236	int ev = w->events & events;
		237
		238	if (ev)
		239	event ((W)w, ev);
		240	}
		241	}
		242
		243	/*****************************************************************************/
		244
97	static int *fdchanges;	245	static int *fdchanges;
98	static int fdchangemax, fdchangecnt;	246	static int fdchangemax, fdchangecnt;
99		247
100	static void	248	static void
101	anfds_init (ANFD *base, int count)	249	fd_reify (void)
102	{	250	{
103	while (count--)	251	int i;
104	{	252
105	base->head = 0;	253	for (i = 0; i < fdchangecnt; ++i)
106	base->wev = base->rev = EV_NONE;
107	++base;
108	}	254	{
109	}	255	int fd = fdchanges [i];
110
111	typedef struct
112	{
113	struct ev_watcher *w;
114	int events;
115	} ANPENDING;
116
117	static ANPENDING *pendings;
118	static int pendingmax, pendingcnt;
119
120	static void
121	event (struct ev_watcher *w, int events)
122	{
123	w->pending = ++pendingcnt;
124	array_needsize (pendings, pendingmax, pendingcnt, );
125	pendings [pendingcnt - 1].w = w;
126	pendings [pendingcnt - 1].events = events;
127	}
128
129	static void
130	fd_event (int fd, int events)
131	{
132	ANFD *anfd = anfds + fd;	256	ANFD *anfd = anfds + fd;
		257	struct ev_io *w;
		258
		259	int events = 0;
		260
		261	for (w = anfd->head; w; w = w->next)
		262	events |= w->events;
		263
		264	anfd->reify = 0;
		265
		266	if (anfd->events != events)
		267	{
		268	method_modify (fd, anfd->events, events);
		269	anfd->events = events;
		270	}
		271	}
		272
		273	fdchangecnt = 0;
		274	}
		275
		276	static void
		277	fd_change (int fd)
		278	{
		279	if (anfds [fd].reify || fdchangecnt < 0)
		280	return;
		281
		282	anfds [fd].reify = 1;
		283
		284	++fdchangecnt;
		285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		286	fdchanges [fdchangecnt - 1] = fd;
		287	}
		288
		289	static void
		290	fd_kill (int fd)
		291	{
133	struct ev_io *w;	292	struct ev_io *w;
134		293
135	for (w = anfd->head; w; w = w->next)	294	printf ("killing fd %d\n", fd);//D
		295	while ((w = anfds [fd].head))
		296	{
		297	ev_io_stop (w);
		298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);
		299	}
		300	}
		301
		302	/* called on EBADF to verify fds */
		303	static void
		304	fd_ebadf (void)
		305	{
		306	int fd;
		307
		308	for (fd = 0; fd < anfdmax; ++fd)
		309	if (anfds [fd].events)
		310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		311	fd_kill (fd);
		312	}
		313
		314	/* called on ENOMEM in select/poll to kill some fds and retry */
		315	static void
		316	fd_enomem (void)
		317	{
		318	int fd = anfdmax;
		319
		320	while (fd--)
		321	if (anfds [fd].events)
136	{	322	{
137	int ev = w->events & events;	323	close (fd);
138		324	fd_kill (fd);
139	if (ev)	325	return;
140	event ((struct ev_watcher *)w, ev);
141	}	326	}
142	}	327	}
143		328
144	/*****************************************************************************/	329	/*****************************************************************************/
145		330
146	static struct ev_timer **atimers;	331	static struct ev_timer **timers;
147	static int atimermax, atimercnt;	332	static int timermax, timercnt;
148		333
149	static struct ev_timer **rtimers;	334	static struct ev_periodic **periodics;
150	static int rtimermax, rtimercnt;	335	static int periodicmax, periodiccnt;
151		336
152	static void	337	static void
153	upheap (struct ev_timer **timers, int k)	338	upheap (WT *timers, int k)
154	{	339	{
155	struct ev_timer *w = timers [k];	340	WT w = timers [k];
156		341
157	while (k && timers [k >> 1]->at > w->at)	342	while (k && timers [k >> 1]->at > w->at)
158	{	343	{
159	timers [k] = timers [k >> 1];	344	timers [k] = timers [k >> 1];
160	timers [k]->active = k + 1;	345	timers [k]->active = k + 1;
…		…
165	timers [k]->active = k + 1;	350	timers [k]->active = k + 1;
166		351
167	}	352	}
168		353
169	static void	354	static void
170	downheap (struct ev_timer **timers, int N, int k)	355	downheap (WT *timers, int N, int k)
171	{	356	{
172	struct ev_timer *w = timers [k];	357	WT w = timers [k];
173		358
174	while (k < (N >> 1))	359	while (k < (N >> 1))
175	{	360	{
176	int j = k << 1;	361	int j = k << 1;
177		362
…		…
193	/*****************************************************************************/	378	/*****************************************************************************/
194		379
195	typedef struct	380	typedef struct
196	{	381	{
197	struct ev_signal *head;	382	struct ev_signal *head;
198	sig_atomic_t gotsig;	383	sig_atomic_t volatile gotsig;
199	} ANSIG;	384	} ANSIG;
200		385
201	static ANSIG *signals;	386	static ANSIG *signals;
202	static int signalmax;	387	static int signalmax;
203		388
204	static int sigpipe [2];	389	static int sigpipe [2];
205	static sig_atomic_t gotsig;	390	static sig_atomic_t volatile gotsig;
206	static struct ev_io sigev;	391	static struct ev_io sigev;
207		392
208	static void	393	static void
209	signals_init (ANSIG *base, int count)	394	signals_init (ANSIG *base, int count)
210	{	395	{
211	while (count--)	396	while (count--)
212	{	397	{
213	base->head = 0;	398	base->head = 0;
214	base->gotsig = 0;	399	base->gotsig = 0;
		400
215	++base;	401	++base;
216	}	402	}
217	}	403	}
218		404
219	static void	405	static void
…		…
222	signals [signum - 1].gotsig = 1;	408	signals [signum - 1].gotsig = 1;
223		409
224	if (!gotsig)	410	if (!gotsig)
225	{	411	{
226	gotsig = 1;	412	gotsig = 1;
227	write (sigpipe [1], &gotsig, 1);	413	write (sigpipe [1], &signum, 1);
228	}	414	}
229	}	415	}
230		416
231	static void	417	static void
232	sigcb (struct ev_io *iow, int revents)	418	sigcb (struct ev_io *iow, int revents)
233	{	419	{
234	struct ev_signal *w;	420	struct ev_signal *w;
235	int sig;	421	int signum;
236		422
		423	read (sigpipe [0], &revents, 1);
237	gotsig = 0;	424	gotsig = 0;
238	read (sigpipe [0], &revents, 1);
239		425
240	for (sig = signalmax; sig--; )	426	for (signum = signalmax; signum--; )
241	if (signals [sig].gotsig)	427	if (signals [signum].gotsig)
242	{	428	{
243	signals [sig].gotsig = 0;	429	signals [signum].gotsig = 0;
244		430
245	for (w = signals [sig].head; w; w = w->next)	431	for (w = signals [signum].head; w; w = w->next)
246	event ((struct ev_watcher *)w, EV_SIGNAL);	432	event ((W)w, EV_SIGNAL);
247	}	433	}
248	}	434	}
249		435
250	static void	436	static void
251	siginit (void)	437	siginit (void)
…		…
255		441
256	/* rather than sort out wether we really need nb, set it */	442	/* rather than sort out wether we really need nb, set it */
257	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
258	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
259		445
260	evio_set (&sigev, sigpipe [0], EV_READ);	446	ev_io_set (&sigev, sigpipe [0], EV_READ);
261	evio_start (&sigev);	447	ev_io_start (&sigev);
262	}	448	}
263		449
264	/*****************************************************************************/	450	/*****************************************************************************/
265		451
		452	static struct ev_idle **idles;
		453	static int idlemax, idlecnt;
		454
		455	static struct ev_prepare **prepares;
		456	static int preparemax, preparecnt;
		457
		458	static struct ev_check **checks;
		459	static int checkmax, checkcnt;
		460
		461	/*****************************************************************************/
		462
		463	static struct ev_child *childs [PID_HASHSIZE];
		464	static struct ev_signal childev;
		465
		466	#ifndef WCONTINUED
		467	# define WCONTINUED 0
		468	#endif
		469
		470	static void
		471	childcb (struct ev_signal *sw, int revents)
		472	{
		473	struct ev_child *w;
		474	int pid, status;
		475
		476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)
		477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)
		478	if (w->pid == pid || !w->pid)
		479	{
		480	w->status = status;
		481	event ((W)w, EV_CHILD);
		482	}
		483	}
		484
		485	/*****************************************************************************/
		486
266	#if HAVE_EPOLL	487	#if EV_USE_EPOLL
267	# include "ev_epoll.c"	488	# include "ev_epoll.c"
268	#endif	489	#endif
		490	#if EV_USE_POLL
		491	# include "ev_poll.c"
		492	#endif
269	#if HAVE_SELECT	493	#if EV_USE_SELECT
270	# include "ev_select.c"	494	# include "ev_select.c"
271	#endif	495	#endif
272		496
		497	int
		498	ev_version_major (void)
		499	{
		500	return EV_VERSION_MAJOR;
		501	}
		502
		503	int
		504	ev_version_minor (void)
		505	{
		506	return EV_VERSION_MINOR;
		507	}
		508
		509	/* return true if we are running with elevated privileges and ignore env variables */
		510	static int
		511	enable_secure ()
		512	{
		513	return getuid () != geteuid ()
		514	|| getgid () != getegid ();
		515	}
		516
273	int ev_init (int flags)	517	int ev_init (int methods)
274	{	518	{
275	#if HAVE_MONOTONIC
276	{
277	struct timespec ts;
278	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
279	have_monotonic = 1;
280	}
281	#endif
282
283	ev_now = ev_time ();
284	now = get_clock ();
285	diff = ev_now - now;
286
287	if (pipe (sigpipe))
288	return 0;
289
290	ev_method = EVMETHOD_NONE;
291	#if HAVE_EPOLL
292	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
293	#endif
294	#if HAVE_SELECT
295	if (ev_method == EVMETHOD_NONE) select_init (flags);
296	#endif
297
298	if (ev_method)	519	if (!ev_method)
		520	{
		521	#if EV_USE_MONOTONIC
299	{	522	{
		523	struct timespec ts;
		524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		525	have_monotonic = 1;
		526	}
		527	#endif
		528
		529	ev_now = ev_time ();
		530	now = get_clock ();
		531	now_floor = now;
		532	diff = ev_now - now;
		533
		534	if (pipe (sigpipe))
		535	return 0;
		536
		537	if (methods == EVMETHOD_AUTO)
		538	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		539	methods = atoi (getenv ("LIBEV_METHODS"));
		540	else
		541	methods = EVMETHOD_ANY;
		542
		543	ev_method = 0;
		544	#if EV_USE_EPOLL
		545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
		546	#endif
		547	#if EV_USE_POLL
		548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		549	#endif
		550	#if EV_USE_SELECT
		551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
		552	#endif
		553
		554	if (ev_method)
		555	{
300	evw_init (&sigev, sigcb, 0);	556	ev_watcher_init (&sigev, sigcb);
301	siginit ();	557	siginit ();
		558
		559	ev_signal_init (&childev, childcb, SIGCHLD);
		560	ev_signal_start (&childev);
		561	}
302	}	562	}
303		563
304	return ev_method;	564	return ev_method;
305	}	565	}
306		566
307	/*****************************************************************************/	567	/*****************************************************************************/
308		568
309	void ev_prefork (void)	569	void
		570	ev_fork_prepare (void)
310	{	571	{
		572	/* nop */
311	}	573	}
312		574
		575	void
313	void ev_postfork_parent (void)	576	ev_fork_parent (void)
314	{	577	{
		578	/* nop */
315	}	579	}
316		580
		581	void
317	void ev_postfork_child (void)	582	ev_fork_child (void)
318	{	583	{
319	#if HAVE_EPOLL	584	#if EV_USE_EPOLL
320	if (ev_method == EVMETHOD_EPOLL)	585	if (ev_method == EVMETHOD_EPOLL)
321	epoll_postfork_child ();	586	epoll_postfork_child ();
322	#endif	587	#endif
323		588
324	evio_stop (&sigev);	589	ev_io_stop (&sigev);
325	close (sigpipe [0]);	590	close (sigpipe [0]);
326	close (sigpipe [1]);	591	close (sigpipe [1]);
327	pipe (sigpipe);	592	pipe (sigpipe);
328	siginit ();	593	siginit ();
329	}	594	}
330		595
331	/*****************************************************************************/	596	/*****************************************************************************/
332		597
333	static ev_hook hooks [EVHOOK_NUM];
334
335	void
336	ev_hook_register (int type, ev_hook hook)
337	{
338	hooks [type] = hook;
339	}
340
341	void
342	ev_hook_unregister (int type, ev_hook hook)
343	{
344	hooks [type] = 0;
345	}
346
347	static void	598	static void
348	hook_call (int type)	599	call_pending (void)
349	{	600	{
350	if (hooks [type])
351	hooks [type] ();
352	}
353
354	static void
355	fd_reify (void)
356	{
357	int i;	601	int pri;
358		602
359	for (i = 0; i < fdchangecnt; ++i)	603	for (pri = NUMPRI; pri--; )
360	{	604	while (pendingcnt [pri])
361	int fd = fdchanges [i];
362	ANFD *anfd = anfds + fd;
363	struct ev_io *w;
364
365	int wev = 0;
366
367	for (w = anfd->head; w; w = w->next)
368	wev |= w->events;
369
370	if (anfd->wev != wev)
371	{	605	{
372	method_modify (fd, anfd->wev, wev);	606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
373	anfd->wev = wev;
374	}
375	}
376		607
377	fdchangecnt = 0;
378	}
379
380	static void
381	call_pending ()
382	{
383	int i;
384
385	for (i = 0; i < pendingcnt; ++i)
386	{
387	ANPENDING *p = pendings + i;
388
389	if (p->w)	608	if (p->w)
390	{	609	{
391	p->w->pending = 0;	610	p->w->pending = 0;
392	p->w->cb (p->w, p->events);	611	p->w->cb (p->w, p->events);
393	}	612	}
394	}	613	}
395
396	pendingcnt = 0;
397	}	614	}
398		615
399	static void	616	static void
400	timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now)	617	timers_reify (void)
401	{	618	{
402	while (timercnt && timers [0]->at <= now)	619	while (timercnt && timers [0]->at <= now)
403	{	620	{
404	struct ev_timer *w = timers [0];	621	struct ev_timer *w = timers [0];
405		622
406	/* first reschedule or stop timer */	623	/* first reschedule or stop timer */
407	if (w->repeat)	624	if (w->repeat)
408	{	625	{
409	if (w->is_abs)	626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
410	w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat;
411	else
412	w->at = now + w->repeat;	627	w->at = now + w->repeat;
413
414	assert (w->at > now);
415
416	downheap (timers, timercnt, 0);	628	downheap ((WT *)timers, timercnt, 0);
417	}	629	}
418	else	630	else
419	{
420	evtimer_stop (w); /* nonrepeating: stop timer */	631	ev_timer_stop (w); /* nonrepeating: stop timer */
421	--timercnt; /* maybe pass by reference instead? */	632
		633	event ((W)w, EV_TIMEOUT);
		634	}
		635	}
		636
		637	static void
		638	periodics_reify (void)
		639	{
		640	while (periodiccnt && periodics [0]->at <= ev_now)
		641	{
		642	struct ev_periodic *w = periodics [0];
		643
		644	/* first reschedule or stop timer */
		645	if (w->interval)
422	}	646	{
		647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
		648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
		649	downheap ((WT *)periodics, periodiccnt, 0);
		650	}
		651	else
		652	ev_periodic_stop (w); /* nonrepeating: stop timer */
423		653
424	event ((struct ev_watcher *)w, EV_TIMEOUT);	654	event ((W)w, EV_PERIODIC);
425	}	655	}
426	}	656	}
427		657
428	static void	658	static void
429	time_update ()	659	periodics_reschedule (ev_tstamp diff)
430	{	660	{
431	int i;	661	int i;
432	ev_now = ev_time ();
433		662
434	if (have_monotonic)	663	/* adjust periodics after time jump */
		664	for (i = 0; i < periodiccnt; ++i)
435	{	665	{
436	ev_tstamp odiff = diff;	666	struct ev_periodic *w = periodics [i];
437		667
438	/* detecting time jumps is much more difficult */	668	if (w->interval)
439	for (i = 2; --i; ) /* loop a few times, before making important decisions */
440	{
441	now = get_clock ();
442	diff = ev_now - now;
443
444	if (fabs (odiff - diff) < MIN_TIMEJUMP)
445	return; /* all is well */
446
447	ev_now = ev_time ();
448	}	669	{
		670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
449		671
450	/* time jump detected, reschedule atimers */	672	if (fabs (diff) >= 1e-4)
451	for (i = 0; i < atimercnt; ++i)	673	{
		674	ev_periodic_stop (w);
		675	ev_periodic_start (w);
		676
		677	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		678	}
452	{	679	}
453	struct ev_timer *w = atimers [i];	680	}
454	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;	681	}
455	}	682
		683	static int
		684	time_update_monotonic (void)
		685	{
		686	now = get_clock ();
		687
		688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		689	{
		690	ev_now = now + diff;
		691	return 0;
456	}	692	}
457	else	693	else
458	{	694	{
		695	now_floor = now;
		696	ev_now = ev_time ();
		697	return 1;
		698	}
		699	}
		700
		701	static void
		702	time_update (void)
		703	{
		704	int i;
		705
		706	#if EV_USE_MONOTONIC
		707	if (expect_true (have_monotonic))
		708	{
		709	if (time_update_monotonic ())
		710	{
		711	ev_tstamp odiff = diff;
		712
		713	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		714	{
		715	diff = ev_now - now;
		716
		717	if (fabs (odiff - diff) < MIN_TIMEJUMP)
		718	return; /* all is well */
		719
		720	ev_now = ev_time ();
		721	now = get_clock ();
		722	now_floor = now;
		723	}
		724
		725	periodics_reschedule (diff - odiff);
		726	/* no timer adjustment, as the monotonic clock doesn't jump */
		727	}
		728	}
		729	else
		730	#endif
		731	{
		732	ev_now = ev_time ();
		733
459	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
460	/* time jump detected, adjust rtimers */	735	{
		736	periodics_reschedule (ev_now - now);
		737
		738	/* adjust timers. this is easy, as the offset is the same for all */
461	for (i = 0; i < rtimercnt; ++i)	739	for (i = 0; i < timercnt; ++i)
462	rtimers [i]->at += ev_now - now;	740	timers [i]->at += diff;
		741	}
463		742
464	now = ev_now;	743	now = ev_now;
465	}	744	}
466	}	745	}
467		746
468	int ev_loop_done;	747	int ev_loop_done;
469		748
470	void ev_loop (int flags)	749	void ev_loop (int flags)
471	{	750	{
472	double block;	751	double block;
473	ev_loop_done = flags & EVLOOP_ONESHOT;	752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
474		753
475	do	754	do
476	{	755	{
477	hook_call (EVHOOK_PREPOLL);	756	/* queue check watchers (and execute them) */
		757	if (expect_false (preparecnt))
		758	{
		759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		760	call_pending ();
		761	}
478		762
479	/* update fd-related kernel structures */	763	/* update fd-related kernel structures */
480	fd_reify ();	764	fd_reify ();
481		765
482	/* calculate blocking time */	766	/* calculate blocking time */
		767
		768	/* we only need this for !monotonic clockor timers, but as we basically
		769	always have timers, we just calculate it always */
		770	#if EV_USE_MONOTONIC
		771	if (expect_true (have_monotonic))
		772	time_update_monotonic ();
		773	else
		774	#endif
		775	{
		776	ev_now = ev_time ();
		777	now = ev_now;
		778	}
		779
483	if (flags & EVLOOP_NONBLOCK)	780	if (flags & EVLOOP_NONBLOCK || idlecnt)
484	block = 0.;	781	block = 0.;
485	else	782	else
486	{	783	{
487	block = MAX_BLOCKTIME;	784	block = MAX_BLOCKTIME;
488		785
489	if (rtimercnt)	786	if (timercnt)
490	{	787	{
491	ev_tstamp to = rtimers [0]->at - get_clock () + method_fudge;	788	ev_tstamp to = timers [0]->at - now + method_fudge;
492	if (block > to) block = to;	789	if (block > to) block = to;
493	}	790	}
494		791
495	if (atimercnt)	792	if (periodiccnt)
496	{	793	{
497	ev_tstamp to = atimers [0]->at - ev_time () + method_fudge;	794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;
498	if (block > to) block = to;	795	if (block > to) block = to;
499	}	796	}
500		797
501	if (block < 0.) block = 0.;	798	if (block < 0.) block = 0.;
502	}	799	}
…		…
504	method_poll (block);	801	method_poll (block);
505		802
506	/* update ev_now, do magic */	803	/* update ev_now, do magic */
507	time_update ();	804	time_update ();
508		805
509	hook_call (EVHOOK_POSTPOLL);
510
511	/* put pending timers into pendign queue and reschedule them */	806	/* queue pending timers and reschedule them */
512	/* absolute timers first */	807	timers_reify (); /* relative timers called last */
513	timers_reify (atimers, atimercnt, ev_now);	808	periodics_reify (); /* absolute timers called first */
514	/* relative timers second */	809
515	timers_reify (rtimers, rtimercnt, now);	810	/* queue idle watchers unless io or timers are pending */
		811	if (!pendingcnt)
		812	queue_events ((W *)idles, idlecnt, EV_IDLE);
		813
		814	/* queue check watchers, to be executed first */
		815	if (checkcnt)
		816	queue_events ((W *)checks, checkcnt, EV_CHECK);
516		817
517	call_pending ();	818	call_pending ();
518	}	819	}
519	while (!ev_loop_done);	820	while (!ev_loop_done);
520	}
521		821
522	/*****************************************************************************/	822	if (ev_loop_done != 2)
		823	ev_loop_done = 0;
		824	}
523		825
		826	/*****************************************************************************/
		827
524	static void	828	static void
525	wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem)	829	wlist_add (WL *head, WL elem)
526	{	830	{
527	elem->next = *head;	831	elem->next = *head;
528	*head = elem;	832	*head = elem;
529	}	833	}
530		834
531	static void	835	static void
532	wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem)	836	wlist_del (WL *head, WL elem)
533	{	837	{
534	while (*head)	838	while (*head)
535	{	839	{
536	if (*head == elem)	840	if (*head == elem)
537	{	841	{
…		…
542	head = &(*head)->next;	846	head = &(*head)->next;
543	}	847	}
544	}	848	}
545		849
546	static void	850	static void
547	ev_start (struct ev_watcher *w, int active)	851	ev_clear_pending (W w)
548	{	852	{
		853	if (w->pending)
		854	{
		855	pendings [ABSPRI (w)][w->pending - 1].w = 0;
549	w->pending = 0;	856	w->pending = 0;
		857	}
		858	}
		859
		860	static void
		861	ev_start (W w, int active)
		862	{
		863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		865
550	w->active = active;	866	w->active = active;
551	}	867	}
552		868
553	static void	869	static void
554	ev_stop (struct ev_watcher *w)	870	ev_stop (W w)
555	{	871	{
556	if (w->pending)
557	pendings [w->pending - 1].w = 0;
558
559	w->active = 0;	872	w->active = 0;
560	/* nop */
561	}	873	}
562		874
563	/*****************************************************************************/	875	/*****************************************************************************/
564		876
565	void	877	void
566	evio_start (struct ev_io *w)	878	ev_io_start (struct ev_io *w)
567	{	879	{
		880	int fd = w->fd;
		881
568	if (ev_is_active (w))	882	if (ev_is_active (w))
569	return;	883	return;
570		884
571	int fd = w->fd;	885	assert (("ev_io_start called with negative fd", fd >= 0));
572		886
573	ev_start ((struct ev_watcher *)w, 1);	887	ev_start ((W)w, 1);
574	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
575	wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w);	889	wlist_add ((WL *)&anfds[fd].head, (WL)w);
576		890
577	++fdchangecnt;	891	fd_change (fd);
578	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
579	fdchanges [fdchangecnt - 1] = fd;
580	}	892	}
581		893
582	void	894	void
583	evio_stop (struct ev_io *w)	895	ev_io_stop (struct ev_io *w)
584	{	896	{
		897	ev_clear_pending ((W)w);
585	if (!ev_is_active (w))	898	if (!ev_is_active (w))
586	return;	899	return;
587		900
588	wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w);	901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
589	ev_stop ((struct ev_watcher *)w);	902	ev_stop ((W)w);
590		903
591	++fdchangecnt;	904	fd_change (w->fd);
592	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
593	fdchanges [fdchangecnt - 1] = w->fd;
594	}	905	}
595		906
596	void	907	void
597	evtimer_start (struct ev_timer *w)	908	ev_timer_start (struct ev_timer *w)
598	{	909	{
599	if (ev_is_active (w))	910	if (ev_is_active (w))
600	return;	911	return;
601		912
602	if (w->is_abs)	913	w->at += now;
		914
		915	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		916
		917	ev_start ((W)w, ++timercnt);
		918	array_needsize (timers, timermax, timercnt, );
		919	timers [timercnt - 1] = w;
		920	upheap ((WT *)timers, timercnt - 1);
		921	}
		922
		923	void
		924	ev_timer_stop (struct ev_timer *w)
		925	{
		926	ev_clear_pending ((W)w);
		927	if (!ev_is_active (w))
		928	return;
		929
		930	if (w->active < timercnt--)
		931	{
		932	timers [w->active - 1] = timers [timercnt];
		933	downheap ((WT *)timers, timercnt, w->active - 1);
603	{	934	}
604	/* this formula differs from the one in timer_reify becuse we do not round up */	935
		936	w->at = w->repeat;
		937
		938	ev_stop ((W)w);
		939	}
		940
		941	void
		942	ev_timer_again (struct ev_timer *w)
		943	{
		944	if (ev_is_active (w))
		945	{
605	if (w->repeat)	946	if (w->repeat)
		947	{
		948	w->at = now + w->repeat;
		949	downheap ((WT *)timers, timercnt, w->active - 1);
		950	}
		951	else
		952	ev_timer_stop (w);
		953	}
		954	else if (w->repeat)
		955	ev_timer_start (w);
		956	}
		957
		958	void
		959	ev_periodic_start (struct ev_periodic *w)
		960	{
		961	if (ev_is_active (w))
		962	return;
		963
		964	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		965
		966	/* this formula differs from the one in periodic_reify because we do not always round up */
		967	if (w->interval)
606	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;	968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
607		969
608	ev_start ((struct ev_watcher *)w, ++atimercnt);	970	ev_start ((W)w, ++periodiccnt);
609	array_needsize (atimers, atimermax, atimercnt, );	971	array_needsize (periodics, periodicmax, periodiccnt, );
610	atimers [atimercnt - 1] = w;	972	periodics [periodiccnt - 1] = w;
611	upheap (atimers, atimercnt - 1);	973	upheap ((WT *)periodics, periodiccnt - 1);
612	}
613	else
614	{
615	w->at += now;
616
617	ev_start ((struct ev_watcher *)w, ++rtimercnt);
618	array_needsize (rtimers, rtimermax, rtimercnt, );
619	rtimers [rtimercnt - 1] = w;
620	upheap (rtimers, rtimercnt - 1);
621	}
622
623	}	974	}
624		975
625	void	976	void
626	evtimer_stop (struct ev_timer *w)	977	ev_periodic_stop (struct ev_periodic *w)
627	{	978	{
		979	ev_clear_pending ((W)w);
628	if (!ev_is_active (w))	980	if (!ev_is_active (w))
629	return;	981	return;
630		982
631	if (w->is_abs)
632	{
633	if (w->active < atimercnt--)	983	if (w->active < periodiccnt--)
634	{
635	atimers [w->active - 1] = atimers [atimercnt];
636	downheap (atimers, atimercnt, w->active - 1);
637	}
638	}	984	{
639	else	985	periodics [w->active - 1] = periodics [periodiccnt];
		986	downheap ((WT *)periodics, periodiccnt, w->active - 1);
640	{	987	}
641	if (w->active < rtimercnt--)
642	{
643	rtimers [w->active - 1] = rtimers [rtimercnt];
644	downheap (rtimers, rtimercnt, w->active - 1);
645	}
646	}
647		988
648	ev_stop ((struct ev_watcher *)w);	989	ev_stop ((W)w);
649	}	990	}
650		991
651	void	992	void
652	evsignal_start (struct ev_signal *w)	993	ev_signal_start (struct ev_signal *w)
653	{	994	{
654	if (ev_is_active (w))	995	if (ev_is_active (w))
655	return;	996	return;
656		997
657	ev_start ((struct ev_watcher *)w, 1);	998	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		999
		1000	ev_start ((W)w, 1);
658	array_needsize (signals, signalmax, w->signum, signals_init);	1001	array_needsize (signals, signalmax, w->signum, signals_init);
659	wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w);	1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
660		1003
661	if (!w->next)	1004	if (!w->next)
662	{	1005	{
663	struct sigaction sa;	1006	struct sigaction sa;
664	sa.sa_handler = sighandler;	1007	sa.sa_handler = sighandler;
…		…
667	sigaction (w->signum, &sa, 0);	1010	sigaction (w->signum, &sa, 0);
668	}	1011	}
669	}	1012	}
670		1013
671	void	1014	void
672	evsignal_stop (struct ev_signal *w)	1015	ev_signal_stop (struct ev_signal *w)
673	{	1016	{
		1017	ev_clear_pending ((W)w);
674	if (!ev_is_active (w))	1018	if (!ev_is_active (w))
675	return;	1019	return;
676		1020
677	wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w);	1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
678	ev_stop ((struct ev_watcher *)w);	1022	ev_stop ((W)w);
679		1023
680	if (!signals [w->signum - 1].head)	1024	if (!signals [w->signum - 1].head)
681	signal (w->signum, SIG_DFL);	1025	signal (w->signum, SIG_DFL);
682	}	1026	}
683		1027
		1028	void
		1029	ev_idle_start (struct ev_idle *w)
		1030	{
		1031	if (ev_is_active (w))
		1032	return;
		1033
		1034	ev_start ((W)w, ++idlecnt);
		1035	array_needsize (idles, idlemax, idlecnt, );
		1036	idles [idlecnt - 1] = w;
		1037	}
		1038
		1039	void
		1040	ev_idle_stop (struct ev_idle *w)
		1041	{
		1042	ev_clear_pending ((W)w);
		1043	if (ev_is_active (w))
		1044	return;
		1045
		1046	idles [w->active - 1] = idles [--idlecnt];
		1047	ev_stop ((W)w);
		1048	}
		1049
		1050	void
		1051	ev_prepare_start (struct ev_prepare *w)
		1052	{
		1053	if (ev_is_active (w))
		1054	return;
		1055
		1056	ev_start ((W)w, ++preparecnt);
		1057	array_needsize (prepares, preparemax, preparecnt, );
		1058	prepares [preparecnt - 1] = w;
		1059	}
		1060
		1061	void
		1062	ev_prepare_stop (struct ev_prepare *w)
		1063	{
		1064	ev_clear_pending ((W)w);
		1065	if (ev_is_active (w))
		1066	return;
		1067
		1068	prepares [w->active - 1] = prepares [--preparecnt];
		1069	ev_stop ((W)w);
		1070	}
		1071
		1072	void
		1073	ev_check_start (struct ev_check *w)
		1074	{
		1075	if (ev_is_active (w))
		1076	return;
		1077
		1078	ev_start ((W)w, ++checkcnt);
		1079	array_needsize (checks, checkmax, checkcnt, );
		1080	checks [checkcnt - 1] = w;
		1081	}
		1082
		1083	void
		1084	ev_check_stop (struct ev_check *w)
		1085	{
		1086	ev_clear_pending ((W)w);
		1087	if (ev_is_active (w))
		1088	return;
		1089
		1090	checks [w->active - 1] = checks [--checkcnt];
		1091	ev_stop ((W)w);
		1092	}
		1093
		1094	void
		1095	ev_child_start (struct ev_child *w)
		1096	{
		1097	if (ev_is_active (w))
		1098	return;
		1099
		1100	ev_start ((W)w, 1);
		1101	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1102	}
		1103
		1104	void
		1105	ev_child_stop (struct ev_child *w)
		1106	{
		1107	ev_clear_pending ((W)w);
		1108	if (ev_is_active (w))
		1109	return;
		1110
		1111	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1112	ev_stop ((W)w);
		1113	}
		1114
684	/*****************************************************************************/	1115	/*****************************************************************************/
		1116
		1117	struct ev_once
		1118	{
		1119	struct ev_io io;
		1120	struct ev_timer to;
		1121	void (*cb)(int revents, void *arg);
		1122	void *arg;
		1123	};
		1124
		1125	static void
		1126	once_cb (struct ev_once *once, int revents)
		1127	{
		1128	void (*cb)(int revents, void *arg) = once->cb;
		1129	void *arg = once->arg;
		1130
		1131	ev_io_stop (&once->io);
		1132	ev_timer_stop (&once->to);
		1133	free (once);
		1134
		1135	cb (revents, arg);
		1136	}
		1137
		1138	static void
		1139	once_cb_io (struct ev_io *w, int revents)
		1140	{
		1141	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
		1142	}
		1143
		1144	static void
		1145	once_cb_to (struct ev_timer *w, int revents)
		1146	{
		1147	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
		1148	}
		1149
		1150	void
		1151	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
		1152	{
		1153	struct ev_once *once = malloc (sizeof (struct ev_once));
		1154
		1155	if (!once)
		1156	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
		1157	else
		1158	{
		1159	once->cb = cb;
		1160	once->arg = arg;
		1161
		1162	ev_watcher_init (&once->io, once_cb_io);
		1163	if (fd >= 0)
		1164	{
		1165	ev_io_set (&once->io, fd, events);
		1166	ev_io_start (&once->io);
		1167	}
		1168
		1169	ev_watcher_init (&once->to, once_cb_to);
		1170	if (timeout >= 0.)
		1171	{
		1172	ev_timer_set (&once->to, timeout, 0.);
		1173	ev_timer_start (&once->to);
		1174	}
		1175	}
		1176	}
		1177
		1178	/*****************************************************************************/
		1179
685	#if 1	1180	#if 0
		1181
		1182	struct ev_io wio;
686		1183
687	static void	1184	static void
688	sin_cb (struct ev_io *w, int revents)	1185	sin_cb (struct ev_io *w, int revents)
689	{	1186	{
690	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1187	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
…		…
692		1189
693	static void	1190	static void
694	ocb (struct ev_timer *w, int revents)	1191	ocb (struct ev_timer *w, int revents)
695	{	1192	{
696	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1193	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
697	evtimer_stop (w);	1194	ev_timer_stop (w);
698	evtimer_start (w);	1195	ev_timer_start (w);
699	}	1196	}
700		1197
701	static void	1198	static void
702	scb (struct ev_signal *w, int revents)	1199	scb (struct ev_signal *w, int revents)
703	{	1200	{
704	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1201	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1202	ev_io_stop (&wio);
		1203	ev_io_start (&wio);
		1204	}
		1205
		1206	static void
		1207	gcb (struct ev_signal *w, int revents)
		1208	{
		1209	fprintf (stderr, "generic %x\n", revents);
		1210
705	}	1211	}
706		1212
707	int main (void)	1213	int main (void)
708	{	1214	{
709	struct ev_io sin;
710
711	ev_init (0);	1215	ev_init (0);
712		1216
713	evw_init (&sin, sin_cb, 55);
714	evio_set (&sin, 0, EV_READ);	1217	ev_io_init (&wio, sin_cb, 0, EV_READ);
715	evio_start (&sin);	1218	ev_io_start (&wio);
716		1219
717	struct ev_timer t[10000];	1220	struct ev_timer t[10000];
718		1221
719	#if 1	1222	#if 0
720	int i;	1223	int i;
721	for (i = 0; i < 10000; ++i)	1224	for (i = 0; i < 10000; ++i)
722	{	1225	{
723	struct ev_timer *w = t + i;	1226	struct ev_timer *w = t + i;
724	evw_init (w, ocb, i);	1227	ev_watcher_init (w, ocb, i);
725	evtimer_set_abs (w, drand48 (), 0.99775533);	1228	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
726	evtimer_start (w);	1229	ev_timer_start (w);
727	if (drand48 () < 0.5)	1230	if (drand48 () < 0.5)
728	evtimer_stop (w);	1231	ev_timer_stop (w);
729	}	1232	}
730	#endif	1233	#endif
731		1234
732	struct ev_timer t1;	1235	struct ev_timer t1;
733	evw_init (&t1, ocb, 0);	1236	ev_timer_init (&t1, ocb, 5, 10);
734	evtimer_set_abs (&t1, 5, 10);
735	evtimer_start (&t1);	1237	ev_timer_start (&t1);
736		1238
737	struct ev_signal sig;	1239	struct ev_signal sig;
738	evw_init (&sig, scb, 65535);
739	evsignal_set (&sig, SIGQUIT);	1240	ev_signal_init (&sig, scb, SIGQUIT);
740	evsignal_start (&sig);	1241	ev_signal_start (&sig);
		1242
		1243	struct ev_check cw;
		1244	ev_check_init (&cw, gcb);
		1245	ev_check_start (&cw);
		1246
		1247	struct ev_idle iw;
		1248	ev_idle_init (&iw, gcb);
		1249	ev_idle_start (&iw);
741		1250
742	ev_loop (0);	1251	ev_loop (0);
743		1252
744	return 0;	1253	return 0;
745	}	1254	}

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