ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.9 by root, Wed Oct 31 07:24:17 2007 UTC vs.
Revision 1.42 by root, Fri Nov 2 20:05:05 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	static void
145	queue_events (struct ev_watcher **events, int eventcnt, int type)
146	{
147	int i;
148
149	for (i = 0; i < eventcnt; ++i)
150	event (events [i], type);
151	}
152
153	/*****************************************************************************/	329	/*****************************************************************************/
154		330
155	static struct ev_timer **atimers;	331	static struct ev_timer **timers;
156	static int atimermax, atimercnt;	332	static int timermax, timercnt;
157		333
158	static struct ev_timer **rtimers;	334	static struct ev_periodic **periodics;
159	static int rtimermax, rtimercnt;	335	static int periodicmax, periodiccnt;
160		336
161	static void	337	static void
162	upheap (struct ev_timer **timers, int k)	338	upheap (WT *timers, int k)
163	{	339	{
164	struct ev_timer *w = timers [k];	340	WT w = timers [k];
165		341
166	while (k && timers [k >> 1]->at > w->at)	342	while (k && timers [k >> 1]->at > w->at)
167	{	343	{
168	timers [k] = timers [k >> 1];	344	timers [k] = timers [k >> 1];
169	timers [k]->active = k + 1;	345	timers [k]->active = k + 1;
…		…
174	timers [k]->active = k + 1;	350	timers [k]->active = k + 1;
175		351
176	}	352	}
177		353
178	static void	354	static void
179	downheap (struct ev_timer **timers, int N, int k)	355	downheap (WT *timers, int N, int k)
180	{	356	{
181	struct ev_timer *w = timers [k];	357	WT w = timers [k];
182		358
183	while (k < (N >> 1))	359	while (k < (N >> 1))
184	{	360	{
185	int j = k << 1;	361	int j = k << 1;
186		362
…		…
202	/*****************************************************************************/	378	/*****************************************************************************/
203		379
204	typedef struct	380	typedef struct
205	{	381	{
206	struct ev_signal *head;	382	struct ev_signal *head;
207	sig_atomic_t gotsig;	383	sig_atomic_t volatile gotsig;
208	} ANSIG;	384	} ANSIG;
209		385
210	static ANSIG *signals;	386	static ANSIG *signals;
211	static int signalmax;	387	static int signalmax;
212		388
213	static int sigpipe [2];	389	static int sigpipe [2];
214	static sig_atomic_t gotsig;	390	static sig_atomic_t volatile gotsig;
215	static struct ev_io sigev;	391	static struct ev_io sigev;
216		392
217	static void	393	static void
218	signals_init (ANSIG *base, int count)	394	signals_init (ANSIG *base, int count)
219	{	395	{
220	while (count--)	396	while (count--)
221	{	397	{
222	base->head = 0;	398	base->head = 0;
223	base->gotsig = 0;	399	base->gotsig = 0;
		400
224	++base;	401	++base;
225	}	402	}
226	}	403	}
227		404
228	static void	405	static void
…		…
231	signals [signum - 1].gotsig = 1;	408	signals [signum - 1].gotsig = 1;
232		409
233	if (!gotsig)	410	if (!gotsig)
234	{	411	{
235	gotsig = 1;	412	gotsig = 1;
236	write (sigpipe [1], &gotsig, 1);	413	write (sigpipe [1], &signum, 1);
237	}	414	}
238	}	415	}
239		416
240	static void	417	static void
241	sigcb (struct ev_io *iow, int revents)	418	sigcb (struct ev_io *iow, int revents)
242	{	419	{
243	struct ev_signal *w;	420	struct ev_signal *w;
244	int sig;	421	int signum;
245		422
		423	read (sigpipe [0], &revents, 1);
246	gotsig = 0;	424	gotsig = 0;
247	read (sigpipe [0], &revents, 1);
248		425
249	for (sig = signalmax; sig--; )	426	for (signum = signalmax; signum--; )
250	if (signals [sig].gotsig)	427	if (signals [signum].gotsig)
251	{	428	{
252	signals [sig].gotsig = 0;	429	signals [signum].gotsig = 0;
253		430
254	for (w = signals [sig].head; w; w = w->next)	431	for (w = signals [signum].head; w; w = w->next)
255	event ((struct ev_watcher *)w, EV_SIGNAL);	432	event ((W)w, EV_SIGNAL);
256	}	433	}
257	}	434	}
258		435
259	static void	436	static void
260	siginit (void)	437	siginit (void)
…		…
264		441
265	/* rather than sort out wether we really need nb, set it */	442	/* rather than sort out wether we really need nb, set it */
266	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
267	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
268		445
269	evio_set (&sigev, sigpipe [0], EV_READ);	446	ev_io_set (&sigev, sigpipe [0], EV_READ);
270	evio_start (&sigev);	447	ev_io_start (&sigev);
271	}	448	}
272		449
273	/*****************************************************************************/	450	/*****************************************************************************/
274		451
275	static struct ev_idle **idles;	452	static struct ev_idle **idles;
276	static int idlemax, idlecnt;	453	static int idlemax, idlecnt;
277		454
		455	static struct ev_prepare **prepares;
		456	static int preparemax, preparecnt;
		457
278	static struct ev_check **checks;	458	static struct ev_check **checks;
279	static int checkmax, checkcnt;	459	static int checkmax, checkcnt;
280		460
281	/*****************************************************************************/	461	/*****************************************************************************/
282		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
283	#if HAVE_EPOLL	487	#if EV_USE_EPOLL
284	# include "ev_epoll.c"	488	# include "ev_epoll.c"
285	#endif	489	#endif
		490	#if EV_USE_POLL
		491	# include "ev_poll.c"
		492	#endif
286	#if HAVE_SELECT	493	#if EV_USE_SELECT
287	# include "ev_select.c"	494	# include "ev_select.c"
288	#endif	495	#endif
289		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
290	int ev_init (int flags)	517	int ev_init (int methods)
291	{	518	{
292	#if HAVE_MONOTONIC
293	{
294	struct timespec ts;
295	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
296	have_monotonic = 1;
297	}
298	#endif
299
300	ev_now = ev_time ();
301	now = get_clock ();
302	diff = ev_now - now;
303
304	if (pipe (sigpipe))
305	return 0;
306
307	ev_method = EVMETHOD_NONE;
308	#if HAVE_EPOLL
309	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
310	#endif
311	#if HAVE_SELECT
312	if (ev_method == EVMETHOD_NONE) select_init (flags);
313	#endif
314
315	if (ev_method)	519	if (!ev_method)
		520	{
		521	#if EV_USE_MONOTONIC
316	{	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	{
317	evw_init (&sigev, sigcb, 0);	556	ev_watcher_init (&sigev, sigcb);
318	siginit ();	557	siginit ();
		558
		559	ev_signal_init (&childev, childcb, SIGCHLD);
		560	ev_signal_start (&childev);
		561	}
319	}	562	}
320		563
321	return ev_method;	564	return ev_method;
322	}	565	}
323		566
324	/*****************************************************************************/	567	/*****************************************************************************/
325		568
326	void ev_prefork (void)	569	void
		570	ev_fork_prepare (void)
327	{	571	{
		572	/* nop */
328	}	573	}
329		574
		575	void
330	void ev_postfork_parent (void)	576	ev_fork_parent (void)
331	{	577	{
		578	/* nop */
332	}	579	}
333		580
		581	void
334	void ev_postfork_child (void)	582	ev_fork_child (void)
335	{	583	{
336	#if HAVE_EPOLL	584	#if EV_USE_EPOLL
337	if (ev_method == EVMETHOD_EPOLL)	585	if (ev_method == EVMETHOD_EPOLL)
338	epoll_postfork_child ();	586	epoll_postfork_child ();
339	#endif	587	#endif
340		588
341	evio_stop (&sigev);	589	ev_io_stop (&sigev);
342	close (sigpipe [0]);	590	close (sigpipe [0]);
343	close (sigpipe [1]);	591	close (sigpipe [1]);
344	pipe (sigpipe);	592	pipe (sigpipe);
345	siginit ();	593	siginit ();
346	}	594	}
347		595
348	/*****************************************************************************/	596	/*****************************************************************************/
349		597
350	static void	598	static void
351	fd_reify (void)	599	call_pending (void)
352	{	600	{
353	int i;	601	int pri;
354		602
355	for (i = 0; i < fdchangecnt; ++i)	603	for (pri = NUMPRI; pri--; )
356	{	604	while (pendingcnt [pri])
357	int fd = fdchanges [i];
358	ANFD *anfd = anfds + fd;
359	struct ev_io *w;
360
361	int wev = 0;
362
363	for (w = anfd->head; w; w = w->next)
364	wev |= w->events;
365
366	if (anfd->wev != wev)
367	{	605	{
368	method_modify (fd, anfd->wev, wev);	606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
369	anfd->wev = wev;
370	}
371	}
372		607
373	fdchangecnt = 0;
374	}
375
376	static void
377	call_pending ()
378	{
379	int i;
380
381	for (i = 0; i < pendingcnt; ++i)
382	{
383	ANPENDING *p = pendings + i;
384
385	if (p->w)	608	if (p->w)
386	{	609	{
387	p->w->pending = 0;	610	p->w->pending = 0;
388	p->w->cb (p->w, p->events);	611	p->w->cb (p->w, p->events);
389	}	612	}
390	}	613	}
391
392	pendingcnt = 0;
393	}	614	}
394		615
395	static void	616	static void
396	timers_reify (struct ev_timer **timers, int timercnt, ev_tstamp now)	617	timers_reify (void)
397	{	618	{
398	while (timercnt && timers [0]->at <= now)	619	while (timercnt && timers [0]->at <= now)
399	{	620	{
400	struct ev_timer *w = timers [0];	621	struct ev_timer *w = timers [0];
401		622
402	/* first reschedule or stop timer */	623	/* first reschedule or stop timer */
403	if (w->repeat)	624	if (w->repeat)
404	{	625	{
405	if (w->is_abs)	626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
406	w->at += floor ((now - w->at) / w->repeat + 1.) * w->repeat;
407	else
408	w->at = now + w->repeat;	627	w->at = now + w->repeat;
409
410	assert (w->at > now);
411
412	downheap (timers, timercnt, 0);	628	downheap ((WT *)timers, timercnt, 0);
413	}	629	}
414	else	630	else
415	{
416	evtimer_stop (w); /* nonrepeating: stop timer */	631	ev_timer_stop (w); /* nonrepeating: stop timer */
417	--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)
418	}	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 */
419		653
420	event ((struct ev_watcher *)w, EV_TIMEOUT);	654	event ((W)w, EV_PERIODIC);
421	}	655	}
422	}	656	}
423		657
424	static void	658	static void
425	time_update ()	659	periodics_reschedule (ev_tstamp diff)
426	{	660	{
427	int i;	661	int i;
428	ev_now = ev_time ();
429		662
430	if (have_monotonic)	663	/* adjust periodics after time jump */
		664	for (i = 0; i < periodiccnt; ++i)
431	{	665	{
432	ev_tstamp odiff = diff;	666	struct ev_periodic *w = periodics [i];
433		667
434	/* detecting time jumps is much more difficult */	668	if (w->interval)
435	for (i = 2; --i; ) /* loop a few times, before making important decisions */
436	{
437	now = get_clock ();
438	diff = ev_now - now;
439
440	if (fabs (odiff - diff) < MIN_TIMEJUMP)
441	return; /* all is well */
442
443	ev_now = ev_time ();
444	}	669	{
		670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
445		671
446	/* time jump detected, reschedule atimers */	672	if (fabs (diff) >= 1e-4)
447	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	}
448	{	679	}
449	struct ev_timer *w = atimers [i];	680	}
450	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;	681	}
451	}	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;
452	}	692	}
453	else	693	else
454	{	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
455	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))
456	/* 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 */
457	for (i = 0; i < rtimercnt; ++i)	739	for (i = 0; i < timercnt; ++i)
458	rtimers [i]->at += ev_now - now;	740	timers [i]->at += diff;
		741	}
459		742
460	now = ev_now;	743	now = ev_now;
461	}	744	}
462	}	745	}
463		746
464	int ev_loop_done;	747	int ev_loop_done;
465		748
466	void ev_loop (int flags)	749	void ev_loop (int flags)
467	{	750	{
468	double block;	751	double block;
469	ev_loop_done = flags & EVLOOP_ONESHOT;	752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
470
471	if (checkcnt)
472	{
473	queue_events (checks, checkcnt, EV_CHECK);
474	call_pending ();
475	}
476		753
477	do	754	do
478	{	755	{
		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	}
		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 || idlecnt)	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	}
…		…
505		802
506	/* update ev_now, do magic */	803	/* update ev_now, do magic */
507	time_update ();	804	time_update ();
508		805
509	/* queue pending timers and reschedule them */	806	/* queue pending timers and reschedule them */
510	/* absolute timers first */	807	timers_reify (); /* relative timers called last */
511	timers_reify (atimers, atimercnt, ev_now);	808	periodics_reify (); /* absolute timers called first */
512	/* relative timers second */
513	timers_reify (rtimers, rtimercnt, now);
514		809
515	/* queue idle watchers unless io or timers are pending */	810	/* queue idle watchers unless io or timers are pending */
516	if (!pendingcnt)	811	if (!pendingcnt)
517	queue_events (idles, idlecnt, EV_IDLE);	812	queue_events ((W *)idles, idlecnt, EV_IDLE);
518		813
519	/* queue check and possibly idle watchers */	814	/* queue check watchers, to be executed first */
		815	if (checkcnt)
520	queue_events (checks, checkcnt, EV_CHECK);	816	queue_events ((W *)checks, checkcnt, EV_CHECK);
521		817
522	call_pending ();	818	call_pending ();
523	}	819	}
524	while (!ev_loop_done);	820	while (!ev_loop_done);
525	}
526		821
527	/*****************************************************************************/	822	if (ev_loop_done != 2)
		823	ev_loop_done = 0;
		824	}
528		825
		826	/*****************************************************************************/
		827
529	static void	828	static void
530	wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem)	829	wlist_add (WL *head, WL elem)
531	{	830	{
532	elem->next = *head;	831	elem->next = *head;
533	*head = elem;	832	*head = elem;
534	}	833	}
535		834
536	static void	835	static void
537	wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem)	836	wlist_del (WL *head, WL elem)
538	{	837	{
539	while (*head)	838	while (*head)
540	{	839	{
541	if (*head == elem)	840	if (*head == elem)
542	{	841	{
…		…
547	head = &(*head)->next;	846	head = &(*head)->next;
548	}	847	}
549	}	848	}
550		849
551	static void	850	static void
552	ev_start (struct ev_watcher *w, int active)	851	ev_clear_pending (W w)
553	{	852	{
		853	if (w->pending)
		854	{
		855	pendings [ABSPRI (w)][w->pending - 1].w = 0;
554	w->pending = 0;	856	w->pending = 0;
		857	}
		858	}
		859
		860	static void
		861	ev_start (W w, int active)
		862	{
555	w->active = active;	863	w->active = active;
556	}	864	}
557		865
558	static void	866	static void
559	ev_stop (struct ev_watcher *w)	867	ev_stop (W w)
560	{	868	{
561	if (w->pending)
562	pendings [w->pending - 1].w = 0;
563
564	w->active = 0;	869	w->active = 0;
565	/* nop */
566	}	870	}
567		871
568	/*****************************************************************************/	872	/*****************************************************************************/
569		873
570	void	874	void
571	evio_start (struct ev_io *w)	875	ev_io_start (struct ev_io *w)
572	{	876	{
		877	int fd = w->fd;
		878
573	if (ev_is_active (w))	879	if (ev_is_active (w))
574	return;	880	return;
575		881
576	int fd = w->fd;	882	assert (("ev_io_start called with negative fd", fd >= 0));
577		883
578	ev_start ((struct ev_watcher *)w, 1);	884	ev_start ((W)w, 1);
579	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
580	wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w);	886	wlist_add ((WL *)&anfds[fd].head, (WL)w);
581		887
582	++fdchangecnt;	888	fd_change (fd);
583	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
584	fdchanges [fdchangecnt - 1] = fd;
585	}	889	}
586		890
587	void	891	void
588	evio_stop (struct ev_io *w)	892	ev_io_stop (struct ev_io *w)
589	{	893	{
		894	ev_clear_pending ((W)w);
590	if (!ev_is_active (w))	895	if (!ev_is_active (w))
591	return;	896	return;
592		897
593	wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w);	898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
594	ev_stop ((struct ev_watcher *)w);	899	ev_stop ((W)w);
595		900
596	++fdchangecnt;	901	fd_change (w->fd);
597	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
598	fdchanges [fdchangecnt - 1] = w->fd;
599	}	902	}
600		903
601	void	904	void
602	evtimer_start (struct ev_timer *w)	905	ev_timer_start (struct ev_timer *w)
603	{	906	{
604	if (ev_is_active (w))	907	if (ev_is_active (w))
605	return;	908	return;
606		909
607	if (w->is_abs)	910	w->at += now;
		911
		912	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		913
		914	ev_start ((W)w, ++timercnt);
		915	array_needsize (timers, timermax, timercnt, );
		916	timers [timercnt - 1] = w;
		917	upheap ((WT *)timers, timercnt - 1);
		918	}
		919
		920	void
		921	ev_timer_stop (struct ev_timer *w)
		922	{
		923	ev_clear_pending ((W)w);
		924	if (!ev_is_active (w))
		925	return;
		926
		927	if (w->active < timercnt--)
		928	{
		929	timers [w->active - 1] = timers [timercnt];
		930	downheap ((WT *)timers, timercnt, w->active - 1);
608	{	931	}
609	/* this formula differs from the one in timer_reify becuse we do not round up */	932
		933	w->at = w->repeat;
		934
		935	ev_stop ((W)w);
		936	}
		937
		938	void
		939	ev_timer_again (struct ev_timer *w)
		940	{
		941	if (ev_is_active (w))
		942	{
610	if (w->repeat)	943	if (w->repeat)
		944	{
		945	w->at = now + w->repeat;
		946	downheap ((WT *)timers, timercnt, w->active - 1);
		947	}
		948	else
		949	ev_timer_stop (w);
		950	}
		951	else if (w->repeat)
		952	ev_timer_start (w);
		953	}
		954
		955	void
		956	ev_periodic_start (struct ev_periodic *w)
		957	{
		958	if (ev_is_active (w))
		959	return;
		960
		961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		962
		963	/* this formula differs from the one in periodic_reify because we do not always round up */
		964	if (w->interval)
611	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;	965	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
612		966
613	ev_start ((struct ev_watcher *)w, ++atimercnt);	967	ev_start ((W)w, ++periodiccnt);
614	array_needsize (atimers, atimermax, atimercnt, );	968	array_needsize (periodics, periodicmax, periodiccnt, );
615	atimers [atimercnt - 1] = w;	969	periodics [periodiccnt - 1] = w;
616	upheap (atimers, atimercnt - 1);	970	upheap ((WT *)periodics, periodiccnt - 1);
617	}
618	else
619	{
620	w->at += now;
621
622	ev_start ((struct ev_watcher *)w, ++rtimercnt);
623	array_needsize (rtimers, rtimermax, rtimercnt, );
624	rtimers [rtimercnt - 1] = w;
625	upheap (rtimers, rtimercnt - 1);
626	}
627
628	}	971	}
629		972
630	void	973	void
631	evtimer_stop (struct ev_timer *w)	974	ev_periodic_stop (struct ev_periodic *w)
632	{	975	{
		976	ev_clear_pending ((W)w);
633	if (!ev_is_active (w))	977	if (!ev_is_active (w))
634	return;	978	return;
635		979
636	if (w->is_abs)
637	{
638	if (w->active < atimercnt--)	980	if (w->active < periodiccnt--)
639	{
640	atimers [w->active - 1] = atimers [atimercnt];
641	downheap (atimers, atimercnt, w->active - 1);
642	}
643	}	981	{
644	else	982	periodics [w->active - 1] = periodics [periodiccnt];
		983	downheap ((WT *)periodics, periodiccnt, w->active - 1);
645	{	984	}
646	if (w->active < rtimercnt--)
647	{
648	rtimers [w->active - 1] = rtimers [rtimercnt];
649	downheap (rtimers, rtimercnt, w->active - 1);
650	}
651	}
652		985
653	ev_stop ((struct ev_watcher *)w);	986	ev_stop ((W)w);
654	}	987	}
655		988
656	void	989	void
657	evsignal_start (struct ev_signal *w)	990	ev_signal_start (struct ev_signal *w)
658	{	991	{
659	if (ev_is_active (w))	992	if (ev_is_active (w))
660	return;	993	return;
661		994
662	ev_start ((struct ev_watcher *)w, 1);	995	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		996
		997	ev_start ((W)w, 1);
663	array_needsize (signals, signalmax, w->signum, signals_init);	998	array_needsize (signals, signalmax, w->signum, signals_init);
664	wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w);	999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
665		1000
666	if (!w->next)	1001	if (!w->next)
667	{	1002	{
668	struct sigaction sa;	1003	struct sigaction sa;
669	sa.sa_handler = sighandler;	1004	sa.sa_handler = sighandler;
…		…
672	sigaction (w->signum, &sa, 0);	1007	sigaction (w->signum, &sa, 0);
673	}	1008	}
674	}	1009	}
675		1010
676	void	1011	void
677	evsignal_stop (struct ev_signal *w)	1012	ev_signal_stop (struct ev_signal *w)
678	{	1013	{
		1014	ev_clear_pending ((W)w);
679	if (!ev_is_active (w))	1015	if (!ev_is_active (w))
680	return;	1016	return;
681		1017
682	wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1].head, (struct ev_watcher_list *)w);	1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
683	ev_stop ((struct ev_watcher *)w);	1019	ev_stop ((W)w);
684		1020
685	if (!signals [w->signum - 1].head)	1021	if (!signals [w->signum - 1].head)
686	signal (w->signum, SIG_DFL);	1022	signal (w->signum, SIG_DFL);
687	}	1023	}
688		1024
		1025	void
689	void evidle_start (struct ev_idle *w)	1026	ev_idle_start (struct ev_idle *w)
690	{	1027	{
691	if (ev_is_active (w))	1028	if (ev_is_active (w))
692	return;	1029	return;
693		1030
694	ev_start ((struct ev_watcher *)w, ++idlecnt);	1031	ev_start ((W)w, ++idlecnt);
695	array_needsize (idles, idlemax, idlecnt, );	1032	array_needsize (idles, idlemax, idlecnt, );
696	idles [idlecnt - 1] = w;	1033	idles [idlecnt - 1] = w;
697	}	1034	}
698		1035
		1036	void
699	void evidle_stop (struct ev_idle *w)	1037	ev_idle_stop (struct ev_idle *w)
700	{	1038	{
		1039	ev_clear_pending ((W)w);
		1040	if (ev_is_active (w))
		1041	return;
		1042
701	idles [w->active - 1] = idles [--idlecnt];	1043	idles [w->active - 1] = idles [--idlecnt];
702	ev_stop ((struct ev_watcher *)w);	1044	ev_stop ((W)w);
703	}	1045	}
704		1046
705	void evcheck_start (struct ev_check *w)	1047	void
		1048	ev_prepare_start (struct ev_prepare *w)
706	{	1049	{
707	if (ev_is_active (w))	1050	if (ev_is_active (w))
708	return;	1051	return;
709		1052
710	ev_start ((struct ev_watcher *)w, ++checkcnt);	1053	ev_start ((W)w, ++preparecnt);
		1054	array_needsize (prepares, preparemax, preparecnt, );
		1055	prepares [preparecnt - 1] = w;
		1056	}
		1057
		1058	void
		1059	ev_prepare_stop (struct ev_prepare *w)
		1060	{
		1061	ev_clear_pending ((W)w);
		1062	if (ev_is_active (w))
		1063	return;
		1064
		1065	prepares [w->active - 1] = prepares [--preparecnt];
		1066	ev_stop ((W)w);
		1067	}
		1068
		1069	void
		1070	ev_check_start (struct ev_check *w)
		1071	{
		1072	if (ev_is_active (w))
		1073	return;
		1074
		1075	ev_start ((W)w, ++checkcnt);
711	array_needsize (checks, checkmax, checkcnt, );	1076	array_needsize (checks, checkmax, checkcnt, );
712	checks [checkcnt - 1] = w;	1077	checks [checkcnt - 1] = w;
713	}	1078	}
714		1079
		1080	void
715	void evcheck_stop (struct ev_check *w)	1081	ev_check_stop (struct ev_check *w)
716	{	1082	{
		1083	ev_clear_pending ((W)w);
		1084	if (ev_is_active (w))
		1085	return;
		1086
717	checks [w->active - 1] = checks [--checkcnt];	1087	checks [w->active - 1] = checks [--checkcnt];
718	ev_stop ((struct ev_watcher *)w);	1088	ev_stop ((W)w);
719	}	1089	}
720		1090
		1091	void
		1092	ev_child_start (struct ev_child *w)
		1093	{
		1094	if (ev_is_active (w))
		1095	return;
		1096
		1097	ev_start ((W)w, 1);
		1098	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1099	}
		1100
		1101	void
		1102	ev_child_stop (struct ev_child *w)
		1103	{
		1104	ev_clear_pending ((W)w);
		1105	if (ev_is_active (w))
		1106	return;
		1107
		1108	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1109	ev_stop ((W)w);
		1110	}
		1111
721	/*****************************************************************************/	1112	/*****************************************************************************/
		1113
		1114	struct ev_once
		1115	{
		1116	struct ev_io io;
		1117	struct ev_timer to;
		1118	void (*cb)(int revents, void *arg);
		1119	void *arg;
		1120	};
		1121
		1122	static void
		1123	once_cb (struct ev_once *once, int revents)
		1124	{
		1125	void (*cb)(int revents, void *arg) = once->cb;
		1126	void *arg = once->arg;
		1127
		1128	ev_io_stop (&once->io);
		1129	ev_timer_stop (&once->to);
		1130	free (once);
		1131
		1132	cb (revents, arg);
		1133	}
		1134
		1135	static void
		1136	once_cb_io (struct ev_io *w, int revents)
		1137	{
		1138	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
		1139	}
		1140
		1141	static void
		1142	once_cb_to (struct ev_timer *w, int revents)
		1143	{
		1144	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
		1145	}
		1146
		1147	void
		1148	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
		1149	{
		1150	struct ev_once *once = malloc (sizeof (struct ev_once));
		1151
		1152	if (!once)
		1153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
		1154	else
		1155	{
		1156	once->cb = cb;
		1157	once->arg = arg;
		1158
		1159	ev_watcher_init (&once->io, once_cb_io);
		1160	if (fd >= 0)
		1161	{
		1162	ev_io_set (&once->io, fd, events);
		1163	ev_io_start (&once->io);
		1164	}
		1165
		1166	ev_watcher_init (&once->to, once_cb_to);
		1167	if (timeout >= 0.)
		1168	{
		1169	ev_timer_set (&once->to, timeout, 0.);
		1170	ev_timer_start (&once->to);
		1171	}
		1172	}
		1173	}
		1174
		1175	/*****************************************************************************/
		1176
722	#if 1	1177	#if 0
		1178
		1179	struct ev_io wio;
723		1180
724	static void	1181	static void
725	sin_cb (struct ev_io *w, int revents)	1182	sin_cb (struct ev_io *w, int revents)
726	{	1183	{
727	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1184	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
…		…
729		1186
730	static void	1187	static void
731	ocb (struct ev_timer *w, int revents)	1188	ocb (struct ev_timer *w, int revents)
732	{	1189	{
733	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1190	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
734	evtimer_stop (w);	1191	ev_timer_stop (w);
735	evtimer_start (w);	1192	ev_timer_start (w);
736	}	1193	}
737		1194
738	static void	1195	static void
739	scb (struct ev_signal *w, int revents)	1196	scb (struct ev_signal *w, int revents)
740	{	1197	{
741	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1198	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1199	ev_io_stop (&wio);
		1200	ev_io_start (&wio);
742	}	1201	}
743		1202
744	static void	1203	static void
745	gcb (struct ev_signal *w, int revents)	1204	gcb (struct ev_signal *w, int revents)
746	{	1205	{
747	fprintf (stderr, "generic %x\n", revents);	1206	fprintf (stderr, "generic %x\n", revents);
		1207
748	}	1208	}
749		1209
750	int main (void)	1210	int main (void)
751	{	1211	{
752	struct ev_io sin;
753
754	ev_init (0);	1212	ev_init (0);
755		1213
756	evw_init (&sin, sin_cb, 55);
757	evio_set (&sin, 0, EV_READ);	1214	ev_io_init (&wio, sin_cb, 0, EV_READ);
758	evio_start (&sin);	1215	ev_io_start (&wio);
759		1216
760	struct ev_timer t[10000];	1217	struct ev_timer t[10000];
761		1218
762	#if 0	1219	#if 0
763	int i;	1220	int i;
764	for (i = 0; i < 10000; ++i)	1221	for (i = 0; i < 10000; ++i)
765	{	1222	{
766	struct ev_timer *w = t + i;	1223	struct ev_timer *w = t + i;
767	evw_init (w, ocb, i);	1224	ev_watcher_init (w, ocb, i);
768	evtimer_set_abs (w, drand48 (), 0.99775533);	1225	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
769	evtimer_start (w);	1226	ev_timer_start (w);
770	if (drand48 () < 0.5)	1227	if (drand48 () < 0.5)
771	evtimer_stop (w);	1228	ev_timer_stop (w);
772	}	1229	}
773	#endif	1230	#endif
774		1231
775	struct ev_timer t1;	1232	struct ev_timer t1;
776	evw_init (&t1, ocb, 0);	1233	ev_timer_init (&t1, ocb, 5, 10);
777	evtimer_set_abs (&t1, 5, 10);
778	evtimer_start (&t1);	1234	ev_timer_start (&t1);
779		1235
780	struct ev_signal sig;	1236	struct ev_signal sig;
781	evw_init (&sig, scb, 65535);
782	evsignal_set (&sig, SIGQUIT);	1237	ev_signal_init (&sig, scb, SIGQUIT);
783	evsignal_start (&sig);	1238	ev_signal_start (&sig);
784		1239
785	struct ev_check cw;	1240	struct ev_check cw;
786	evw_init (&cw, gcb, 0);	1241	ev_check_init (&cw, gcb);
787	evcheck_start (&cw);	1242	ev_check_start (&cw);
788		1243
789	struct ev_idle iw;	1244	struct ev_idle iw;
790	evw_init (&iw, gcb, 0);	1245	ev_idle_init (&iw, gcb);
791	evidle_start (&iw);	1246	ev_idle_start (&iw);
792		1247
793	ev_loop (0);	1248	ev_loop (0);
794		1249
795	return 0;	1250	return 0;
796	}	1251	}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines