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

Comparing libev/ev.c (file contents):
Revision 1.12 by root, Wed Oct 31 09:23:17 2007 UTC vs.
Revision 1.50 by root, Sat Nov 3 19:41:55 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	#ifndef EV_STANDALONE
		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	#ifndef WIN32
		48	# include <sys/wait.h>
		49	#endif
11	#include <sys/time.h>	50	#include <sys/time.h>
12	#include <time.h>	51	#include <time.h>
13		52
14	#define HAVE_EPOLL 1	53	/**/
15		54
16	#ifndef HAVE_MONOTONIC	55	#ifndef EV_USE_MONOTONIC
		56	# define EV_USE_MONOTONIC 1
		57	#endif
		58
		59	#ifndef EV_USE_SELECT
		60	# define EV_USE_SELECT 1
		61	#endif
		62
		63	#ifndef EV_USE_POLL
		64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		65	#endif
		66
		67	#ifndef EV_USE_EPOLL
		68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
		73	#endif
		74
		75	#ifndef EV_USE_REALTIME
		76	# define EV_USE_REALTIME 1
		77	#endif
		78
		79	/**/
		80
17	# ifdef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
18	# define HAVE_MONOTONIC 1	83	# define EV_USE_MONOTONIC 0
19	# endif	84	#endif
20	#endif
21		85
22	#ifndef HAVE_SELECT
23	# define HAVE_SELECT 1
24	#endif
25
26	#ifndef HAVE_EPOLL
27	# define HAVE_EPOLL 0
28	#endif
29
30	#ifndef HAVE_REALTIME	86	#ifndef CLOCK_REALTIME
31	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	87	# undef EV_USE_REALTIME
		88	# define EV_USE_REALTIME 0
32	#endif	89	#endif
		90
		91	/**/
33		92
34	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
35	#define MAX_BLOCKTIME 60.	94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
36		97
37	#include "ev.h"	98	#include "ev.h"
38		99
39	struct ev_watcher {	100	#if __GNUC__ >= 3
40	EV_WATCHER (ev_watcher);	101	# define expect(expr,value) __builtin_expect ((expr),(value))
41	};	102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
42		107
43	struct ev_watcher_list {	108	#define expect_false(expr) expect ((expr) != 0, 0)
44	EV_WATCHER_LIST (ev_watcher_list);	109	#define expect_true(expr) expect ((expr) != 0, 1)
45	};
46		110
47	struct ev_watcher_time {	111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
48	EV_WATCHER_TIME (ev_watcher_time);	112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
49	};
50		113
51	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
52	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
53	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
54		117
55	static ev_tstamp now, diff; /* monotonic clock */	118	static ev_tstamp now_floor, now, diff; /* monotonic clock */
56	ev_tstamp ev_now;	119	ev_tstamp ev_now;
57	int ev_method;	120	int ev_method;
58		121
59	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
60		123
65	/*****************************************************************************/	128	/*****************************************************************************/
66		129
67	ev_tstamp	130	ev_tstamp
68	ev_time (void)	131	ev_time (void)
69	{	132	{
70	#if HAVE_REALTIME	133	#if EV_USE_REALTIME
71	struct timespec ts;	134	struct timespec ts;
72	clock_gettime (CLOCK_REALTIME, &ts);	135	clock_gettime (CLOCK_REALTIME, &ts);
73	return ts.tv_sec + ts.tv_nsec * 1e-9;	136	return ts.tv_sec + ts.tv_nsec * 1e-9;
74	#else	137	#else
75	struct timeval tv;	138	struct timeval tv;
…		…
79	}	142	}
80		143
81	static ev_tstamp	144	static ev_tstamp
82	get_clock (void)	145	get_clock (void)
83	{	146	{
84	#if HAVE_MONOTONIC	147	#if EV_USE_MONOTONIC
85	if (have_monotonic)	148	if (expect_true (have_monotonic))
86	{	149	{
87	struct timespec ts;	150	struct timespec ts;
88	clock_gettime (CLOCK_MONOTONIC, &ts);	151	clock_gettime (CLOCK_MONOTONIC, &ts);
89	return ts.tv_sec + ts.tv_nsec * 1e-9;	152	return ts.tv_sec + ts.tv_nsec * 1e-9;
90	}	153	}
91	#endif	154	#endif
92		155
93	return ev_time ();	156	return ev_time ();
94	}	157	}
95		158
		159	#define array_roundsize(base,n) ((n) \| 4 & ~3)
		160
96	#define array_needsize(base,cur,cnt,init) \	161	#define array_needsize(base,cur,cnt,init) \
97	if ((cnt) > cur) \	162	if (expect_false ((cnt) > cur)) \
98	{ \	163	{ \
99	int newcnt = cur ? cur << 1 : 16; \	164	int newcnt = cur; \
100	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	165	do \
		166	{ \
		167	newcnt = array_roundsize (base, newcnt << 1); \
		168	} \
		169	while ((cnt) > newcnt); \
		170	\
101	base = realloc (base, sizeof (base) (newcnt)); \	171	base = realloc (base, sizeof (base) (newcnt)); \
102	init (base + cur, newcnt - cur); \	172	init (base + cur, newcnt - cur); \
103	cur = newcnt; \	173	cur = newcnt; \
104	}	174	}
105		175
106	/*****************************************************************************/	176	/*****************************************************************************/
107		177
108	typedef struct	178	typedef struct
109	{	179	{
110	struct ev_io *head;	180	struct ev_watcher_list *head;
111	unsigned char wev, rev; /* want, received event set */	181	unsigned char events;
		182	unsigned char reify;
112	} ANFD;	183	} ANFD;
113		184
114	static ANFD *anfds;	185	static ANFD *anfds;
115	static int anfdmax;	186	static int anfdmax;
116		187
117	static int *fdchanges;
118	static int fdchangemax, fdchangecnt;
119
120	static void	188	static void
121	anfds_init (ANFD *base, int count)	189	anfds_init (ANFD *base, int count)
122	{	190	{
123	while (count--)	191	while (count--)
124	{	192	{
125	base->head = 0;	193	base->head = 0;
126	base->wev = base->rev = EV_NONE;	194	base->events = EV_NONE;
		195	base->reify = 0;
		196
127	++base;	197	++base;
128	}	198	}
129	}	199	}
130		200
131	typedef struct	201	typedef struct
132	{	202	{
133	W w;	203	W w;
134	int events;	204	int events;
135	} ANPENDING;	205	} ANPENDING;
136		206
137	static ANPENDING *pendings;	207	static ANPENDING *pendings [NUMPRI];
138	static int pendingmax, pendingcnt;	208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
139		209
140	static void	210	static void
141	event (W w, int events)	211	event (W w, int events)
142	{	212	{
		213	if (w->pending)
		214	{
		215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
		216	return;
		217	}
		218
143	w->pending = ++pendingcnt;	219	w->pending = ++pendingcnt [ABSPRI (w)];
144	array_needsize (pendings, pendingmax, pendingcnt, );	220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
145	pendings [pendingcnt - 1].w = w;	221	pendings [ABSPRI (w)][w->pending - 1].w = w;
146	pendings [pendingcnt - 1].events = events;	222	pendings [ABSPRI (w)][w->pending - 1].events = events;
		223	}
		224
		225	static void
		226	queue_events (W *events, int eventcnt, int type)
		227	{
		228	int i;
		229
		230	for (i = 0; i < eventcnt; ++i)
		231	event (events [i], type);
147	}	232	}
148		233
149	static void	234	static void
150	fd_event (int fd, int events)	235	fd_event (int fd, int events)
151	{	236	{
152	ANFD *anfd = anfds + fd;	237	ANFD *anfd = anfds + fd;
153	struct ev_io *w;	238	struct ev_io *w;
154		239
155	for (w = anfd->head; w; w = w->next)	240	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
156	{	241	{
157	int ev = w->events & events;	242	int ev = w->events & events;
158		243
159	if (ev)	244	if (ev)
160	event ((W)w, ev);	245	event ((W)w, ev);
161	}	246	}
162	}	247	}
163		248
		249	/*****************************************************************************/
		250
		251	static int *fdchanges;
		252	static int fdchangemax, fdchangecnt;
		253
164	static void	254	static void
165	queue_events (W *events, int eventcnt, int type)	255	fd_reify (void)
166	{	256	{
167	int i;	257	int i;
168		258
169	for (i = 0; i < eventcnt; ++i)	259	for (i = 0; i < fdchangecnt; ++i)
170	event (events [i], type);	260	{
		261	int fd = fdchanges [i];
		262	ANFD *anfd = anfds + fd;
		263	struct ev_io *w;
		264
		265	int events = 0;
		266
		267	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
		268	events \|= w->events;
		269
		270	anfd->reify = 0;
		271
		272	if (anfd->events != events)
		273	{
		274	method_modify (fd, anfd->events, events);
		275	anfd->events = events;
		276	}
		277	}
		278
		279	fdchangecnt = 0;
		280	}
		281
		282	static void
		283	fd_change (int fd)
		284	{
		285	if (anfds [fd].reify \|\| fdchangecnt < 0)
		286	return;
		287
		288	anfds [fd].reify = 1;
		289
		290	++fdchangecnt;
		291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		292	fdchanges [fdchangecnt - 1] = fd;
		293	}
		294
		295	static void
		296	fd_kill (int fd)
		297	{
		298	struct ev_io *w;
		299
		300	while ((w = (struct ev_io *)anfds [fd].head))
		301	{
		302	ev_io_stop (w);
		303	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		304	}
		305	}
		306
		307	/* called on EBADF to verify fds */
		308	static void
		309	fd_ebadf (void)
		310	{
		311	int fd;
		312
		313	for (fd = 0; fd < anfdmax; ++fd)
		314	if (anfds [fd].events)
		315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		316	fd_kill (fd);
		317	}
		318
		319	/* called on ENOMEM in select/poll to kill some fds and retry */
		320	static void
		321	fd_enomem (void)
		322	{
		323	int fd = anfdmax;
		324
		325	while (fd--)
		326	if (anfds [fd].events)
		327	{
		328	close (fd);
		329	fd_kill (fd);
		330	return;
		331	}
171	}	332	}
172		333
173	/*****************************************************************************/	334	/*****************************************************************************/
174		335
175	static struct ev_timer **timers;	336	static struct ev_timer **timers;
…		…
221		382
222	/*****************************************************************************/	383	/*****************************************************************************/
223		384
224	typedef struct	385	typedef struct
225	{	386	{
226	struct ev_signal *head;	387	struct ev_watcher_list *head;
227	sig_atomic_t gotsig;	388	sig_atomic_t volatile gotsig;
228	} ANSIG;	389	} ANSIG;
229		390
230	static ANSIG *signals;	391	static ANSIG *signals;
231	static int signalmax;	392	static int signalmax;
232		393
233	static int sigpipe [2];	394	static int sigpipe [2];
234	static sig_atomic_t gotsig;	395	static sig_atomic_t volatile gotsig;
235	static struct ev_io sigev;	396	static struct ev_io sigev;
236		397
237	static void	398	static void
238	signals_init (ANSIG *base, int count)	399	signals_init (ANSIG *base, int count)
239	{	400	{
240	while (count--)	401	while (count--)
241	{	402	{
242	base->head = 0;	403	base->head = 0;
243	base->gotsig = 0;	404	base->gotsig = 0;
		405
244	++base;	406	++base;
245	}	407	}
246	}	408	}
247		409
248	static void	410	static void
…		…
250	{	412	{
251	signals [signum - 1].gotsig = 1;	413	signals [signum - 1].gotsig = 1;
252		414
253	if (!gotsig)	415	if (!gotsig)
254	{	416	{
		417	int old_errno = errno;
255	gotsig = 1;	418	gotsig = 1;
256	write (sigpipe [1], &gotsig, 1);	419	write (sigpipe [1], &signum, 1);
		420	errno = old_errno;
257	}	421	}
258	}	422	}
259		423
260	static void	424	static void
261	sigcb (struct ev_io *iow, int revents)	425	sigcb (struct ev_io *iow, int revents)
262	{	426	{
263	struct ev_signal *w;	427	struct ev_watcher_list *w;
264	int sig;	428	int signum;
265		429
		430	read (sigpipe [0], &revents, 1);
266	gotsig = 0;	431	gotsig = 0;
267	read (sigpipe [0], &revents, 1);
268		432
269	for (sig = signalmax; sig--; )	433	for (signum = signalmax; signum--; )
270	if (signals [sig].gotsig)	434	if (signals [signum].gotsig)
271	{	435	{
272	signals [sig].gotsig = 0;	436	signals [signum].gotsig = 0;
273		437
274	for (w = signals [sig].head; w; w = w->next)	438	for (w = signals [signum].head; w; w = w->next)
275	event ((W)w, EV_SIGNAL);	439	event ((W)w, EV_SIGNAL);
276	}	440	}
277	}	441	}
278		442
279	static void	443	static void
280	siginit (void)	444	siginit (void)
281	{	445	{
		446	#ifndef WIN32
282	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
283	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
284		449
285	/* rather than sort out wether we really need nb, set it */	450	/* rather than sort out wether we really need nb, set it */
286	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
287	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		453	#endif
288		454
289	evio_set (&sigev, sigpipe [0], EV_READ);	455	ev_io_set (&sigev, sigpipe [0], EV_READ);
290	evio_start (&sigev);	456	ev_io_start (&sigev);
291	}	457	}
292		458
293	/*****************************************************************************/	459	/*****************************************************************************/
294		460
295	static struct ev_idle **idles;	461	static struct ev_idle **idles;
296	static int idlemax, idlecnt;	462	static int idlemax, idlecnt;
297		463
		464	static struct ev_prepare **prepares;
		465	static int preparemax, preparecnt;
		466
298	static struct ev_check **checks;	467	static struct ev_check **checks;
299	static int checkmax, checkcnt;	468	static int checkmax, checkcnt;
300		469
301	/*****************************************************************************/	470	/*****************************************************************************/
302		471
		472	static struct ev_child *childs [PID_HASHSIZE];
		473	static struct ev_signal childev;
		474
		475	#ifndef WIN32
		476
		477	#ifndef WCONTINUED
		478	# define WCONTINUED 0
		479	#endif
		480
		481	static void
		482	child_reap (struct ev_signal *sw, int chain, int pid, int status)
		483	{
		484	struct ev_child *w;
		485
		486	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		487	if (w->pid == pid \|\| !w->pid)
		488	{
		489	w->priority = sw->priority; /* need to do it now */
		490	w->rpid = pid;
		491	w->rstatus = status;
		492	event ((W)w, EV_CHILD);
		493	}
		494	}
		495
		496	static void
		497	childcb (struct ev_signal *sw, int revents)
		498	{
		499	int pid, status;
		500
		501	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
		502	{
		503	/* make sure we are called again until all childs have been reaped */
		504	event ((W)sw, EV_SIGNAL);
		505
		506	child_reap (sw, pid, pid, status);
		507	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		508	}
		509	}
		510
		511	#endif
		512
		513	/*****************************************************************************/
		514
		515	#if EV_USE_KQUEUE
		516	# include "ev_kqueue.c"
		517	#endif
303	#if HAVE_EPOLL	518	#if EV_USE_EPOLL
304	# include "ev_epoll.c"	519	# include "ev_epoll.c"
305	#endif	520	#endif
		521	#if EV_USE_POLL
		522	# include "ev_poll.c"
		523	#endif
306	#if HAVE_SELECT	524	#if EV_USE_SELECT
307	# include "ev_select.c"	525	# include "ev_select.c"
308	#endif	526	#endif
309		527
310	int ev_init (int flags)	528	int
		529	ev_version_major (void)
311	{	530	{
312	#if HAVE_MONOTONIC	531	return EV_VERSION_MAJOR;
313	{	532	}
314	struct timespec ts;
315	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
316	have_monotonic = 1;
317	}
318	#endif
319		533
320	ev_now = ev_time ();	534	int
321	now = get_clock ();	535	ev_version_minor (void)
322	diff = ev_now - now;	536	{
		537	return EV_VERSION_MINOR;
		538	}
323		539
324	if (pipe (sigpipe))	540	/* return true if we are running with elevated privileges and should ignore env variables */
		541	static int
		542	enable_secure ()
		543	{
		544	#ifdef WIN32
325	return 0;	545	return 0;
326		546	#else
327	ev_method = EVMETHOD_NONE;	547	return getuid () != geteuid ()
328	#if HAVE_EPOLL	548	\|\| getgid () != getegid ();
329	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
330	#endif	549	#endif
331	#if HAVE_SELECT	550	}
332	if (ev_method == EVMETHOD_NONE) select_init (flags);
333	#endif
334		551
		552	int ev_init (int methods)
		553	{
335	if (ev_method)	554	if (!ev_method)
		555	{
		556	#if EV_USE_MONOTONIC
336	{	557	{
		558	struct timespec ts;
		559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		560	have_monotonic = 1;
		561	}
		562	#endif
		563
		564	ev_now = ev_time ();
		565	now = get_clock ();
		566	now_floor = now;
		567	diff = ev_now - now;
		568
		569	if (pipe (sigpipe))
		570	return 0;
		571
		572	if (methods == EVMETHOD_AUTO)
		573	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		574	methods = atoi (getenv ("LIBEV_METHODS"));
		575	else
		576	methods = EVMETHOD_ANY;
		577
		578	ev_method = 0;
		579	#if EV_USE_KQUEUE
		580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);
		581	#endif
		582	#if EV_USE_EPOLL
		583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
		584	#endif
		585	#if EV_USE_POLL
		586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		587	#endif
		588	#if EV_USE_SELECT
		589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
		590	#endif
		591
		592	if (ev_method)
		593	{
337	evw_init (&sigev, sigcb);	594	ev_watcher_init (&sigev, sigcb);
		595	ev_set_priority (&sigev, EV_MAXPRI);
338	siginit ();	596	siginit ();
		597
		598	#ifndef WIN32
		599	ev_signal_init (&childev, childcb, SIGCHLD);
		600	ev_set_priority (&childev, EV_MAXPRI);
		601	ev_signal_start (&childev);
		602	#endif
		603	}
339	}	604	}
340		605
341	return ev_method;	606	return ev_method;
342	}	607	}
343		608
344	/*****************************************************************************/	609	/*****************************************************************************/
345		610
346	void ev_prefork (void)	611	void
		612	ev_fork_prepare (void)
347	{	613	{
348	/* nop */	614	/* nop */
349	}	615	}
350		616
		617	void
351	void ev_postfork_parent (void)	618	ev_fork_parent (void)
352	{	619	{
353	/* nop */	620	/* nop */
354	}	621	}
355		622
		623	void
356	void ev_postfork_child (void)	624	ev_fork_child (void)
357	{	625	{
358	#if HAVE_EPOLL	626	#if EV_USE_EPOLL
359	if (ev_method == EVMETHOD_EPOLL)	627	if (ev_method == EVMETHOD_EPOLL)
360	epoll_postfork_child ();	628	epoll_postfork_child ();
361	#endif	629	#endif
362		630
363	evio_stop (&sigev);	631	ev_io_stop (&sigev);
364	close (sigpipe [0]);	632	close (sigpipe [0]);
365	close (sigpipe [1]);	633	close (sigpipe [1]);
366	pipe (sigpipe);	634	pipe (sigpipe);
367	siginit ();	635	siginit ();
368	}	636	}
369		637
370	/*****************************************************************************/	638	/*****************************************************************************/
371		639
372	static void	640	static void
373	fd_reify (void)	641	call_pending (void)
374	{	642	{
375	int i;	643	int pri;
376		644
377	for (i = 0; i < fdchangecnt; ++i)	645	for (pri = NUMPRI; pri--; )
378	{	646	while (pendingcnt [pri])
379	int fd = fdchanges [i];
380	ANFD *anfd = anfds + fd;
381	struct ev_io *w;
382
383	int wev = 0;
384
385	for (w = anfd->head; w; w = w->next)
386	wev \|= w->events;
387
388	if (anfd->wev != wev)
389	{	647	{
390	method_modify (fd, anfd->wev, wev);	648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
391	anfd->wev = wev;
392	}
393	}
394		649
395	fdchangecnt = 0;
396	}
397
398	static void
399	call_pending ()
400	{
401	int i;
402
403	for (i = 0; i < pendingcnt; ++i)
404	{
405	ANPENDING *p = pendings + i;
406
407	if (p->w)	650	if (p->w)
408	{	651	{
409	p->w->pending = 0;	652	p->w->pending = 0;
410	p->w->cb (p->w, p->events);	653	p->w->cb (p->w, p->events);
411	}	654	}
412	}	655	}
413
414	pendingcnt = 0;
415	}	656	}
416		657
417	static void	658	static void
418	timers_reify ()	659	timers_reify (void)
419	{	660	{
420	while (timercnt && timers [0]->at <= now)	661	while (timercnt && timers [0]->at <= now)
421	{	662	{
422	struct ev_timer *w = timers [0];	663	struct ev_timer *w = timers [0];
423		664
424	/* first reschedule or stop timer */	665	/* first reschedule or stop timer */
425	if (w->repeat)	666	if (w->repeat)
426	{	667	{
		668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
427	w->at = now + w->repeat;	669	w->at = now + w->repeat;
428	assert (("timer timeout in the past, negative repeat?", w->at > now));
429	downheap ((WT *)timers, timercnt, 0);	670	downheap ((WT *)timers, timercnt, 0);
430	}	671	}
431	else	672	else
432	evtimer_stop (w); /* nonrepeating: stop timer */	673	ev_timer_stop (w); /* nonrepeating: stop timer */
433		674
434	event ((W)w, EV_TIMEOUT);	675	event ((W)w, EV_TIMEOUT);
435	}	676	}
436	}	677	}
437		678
438	static void	679	static void
439	periodics_reify ()	680	periodics_reify (void)
440	{	681	{
441	while (periodiccnt && periodics [0]->at <= ev_now)	682	while (periodiccnt && periodics [0]->at <= ev_now)
442	{	683	{
443	struct ev_periodic *w = periodics [0];	684	struct ev_periodic *w = periodics [0];
444		685
445	/* first reschedule or stop timer */	686	/* first reschedule or stop timer */
446	if (w->interval)	687	if (w->interval)
447	{	688	{
448	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	689	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
449	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	690	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
450	downheap ((WT *)periodics, periodiccnt, 0);	691	downheap ((WT *)periodics, periodiccnt, 0);
451	}	692	}
452	else	693	else
453	evperiodic_stop (w); /* nonrepeating: stop timer */	694	ev_periodic_stop (w); /* nonrepeating: stop timer */
454		695
455	event ((W)w, EV_TIMEOUT);	696	event ((W)w, EV_PERIODIC);
456	}	697	}
457	}	698	}
458		699
459	static void	700	static void
460	time_jump (ev_tstamp diff)	701	periodics_reschedule (ev_tstamp diff)
461	{	702	{
462	int i;	703	int i;
463		704
464	/* adjust periodics */	705	/* adjust periodics after time jump */
465	for (i = 0; i < periodiccnt; ++i)	706	for (i = 0; i < periodiccnt; ++i)
466	{	707	{
467	struct ev_periodic *w = periodics [i];	708	struct ev_periodic *w = periodics [i];
468		709
469	if (w->interval)	710	if (w->interval)
470	{	711	{
471	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
472		713
473	if (fabs (diff) >= 1e-4)	714	if (fabs (diff) >= 1e-4)
474	{	715	{
475	evperiodic_stop (w);	716	ev_periodic_stop (w);
476	evperiodic_start (w);	717	ev_periodic_start (w);
477		718
478	i = 0; /* restart loop, inefficient, but time jumps should be rare */	719	i = 0; /* restart loop, inefficient, but time jumps should be rare */
479	}	720	}
480	}	721	}
481	}	722	}
482
483	/* adjust timers. this is easy, as the offset is the same for all */
484	for (i = 0; i < timercnt; ++i)
485	timers [i]->at += diff;
486	}	723	}
487		724
488	static void	725	static int
		726	time_update_monotonic (void)
		727	{
		728	now = get_clock ();
		729
		730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		731	{
		732	ev_now = now + diff;
		733	return 0;
		734	}
		735	else
		736	{
		737	now_floor = now;
		738	ev_now = ev_time ();
		739	return 1;
		740	}
		741	}
		742
		743	static void
489	time_update ()	744	time_update (void)
490	{	745	{
491	int i;	746	int i;
492		747
493	ev_now = ev_time ();	748	#if EV_USE_MONOTONIC
494
495	if (have_monotonic)	749	if (expect_true (have_monotonic))
496	{	750	{
497	ev_tstamp odiff = diff;	751	if (time_update_monotonic ())
498
499	for (i = 4; --i; ) /* loop a few times, before making important decisions */
500	{	752	{
501	now = get_clock ();	753	ev_tstamp odiff = diff;
		754
		755	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		756	{
502	diff = ev_now - now;	757	diff = ev_now - now;
503		758
504	if (fabs (odiff - diff) < MIN_TIMEJUMP)	759	if (fabs (odiff - diff) < MIN_TIMEJUMP)
505	return; /* all is well */	760	return; /* all is well */
506		761
507	ev_now = ev_time ();	762	ev_now = ev_time ();
		763	now = get_clock ();
		764	now_floor = now;
		765	}
		766
		767	periodics_reschedule (diff - odiff);
		768	/* no timer adjustment, as the monotonic clock doesn't jump */
508	}	769	}
509
510	time_jump (diff - odiff);
511	}	770	}
512	else	771	else
		772	#endif
513	{	773	{
		774	ev_now = ev_time ();
		775
514	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	776	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
515	time_jump (ev_now - now);	777	{
		778	periodics_reschedule (ev_now - now);
		779
		780	/* adjust timers. this is easy, as the offset is the same for all */
		781	for (i = 0; i < timercnt; ++i)
		782	timers [i]->at += diff;
		783	}
516		784
517	now = ev_now;	785	now = ev_now;
518	}	786	}
519	}	787	}
520		788
521	int ev_loop_done;	789	int ev_loop_done;
522		790
523	void ev_loop (int flags)	791	void ev_loop (int flags)
524	{	792	{
525	double block;	793	double block;
526	ev_loop_done = flags & EVLOOP_ONESHOT;	794	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
527
528	if (checkcnt)
529	{
530	queue_events ((W *)checks, checkcnt, EV_CHECK);
531	call_pending ();
532	}
533		795
534	do	796	do
535	{	797	{
		798	/* queue check watchers (and execute them) */
		799	if (expect_false (preparecnt))
		800	{
		801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		802	call_pending ();
		803	}
		804
536	/* update fd-related kernel structures */	805	/* update fd-related kernel structures */
537	fd_reify ();	806	fd_reify ();
538		807
539	/* calculate blocking time */	808	/* calculate blocking time */
540		809
541	/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */	810	/* we only need this for !monotonic clockor timers, but as we basically
		811	always have timers, we just calculate it always */
		812	#if EV_USE_MONOTONIC
		813	if (expect_true (have_monotonic))
		814	time_update_monotonic ();
		815	else
		816	#endif
		817	{
542	ev_now = ev_time ();	818	ev_now = ev_time ();
		819	now = ev_now;
		820	}
543		821
544	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	822	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
545	block = 0.;	823	block = 0.;
546	else	824	else
547	{	825	{
548	block = MAX_BLOCKTIME;	826	block = MAX_BLOCKTIME;
549		827
550	if (timercnt)	828	if (timercnt)
551	{	829	{
552	ev_tstamp to = timers [0]->at - get_clock () + method_fudge;	830	ev_tstamp to = timers [0]->at - now + method_fudge;
553	if (block > to) block = to;	831	if (block > to) block = to;
554	}	832	}
555		833
556	if (periodiccnt)	834	if (periodiccnt)
557	{	835	{
…		…
566		844
567	/* update ev_now, do magic */	845	/* update ev_now, do magic */
568	time_update ();	846	time_update ();
569		847
570	/* queue pending timers and reschedule them */	848	/* queue pending timers and reschedule them */
		849	timers_reify (); /* relative timers called last */
571	periodics_reify (); /* absolute timers first */	850	periodics_reify (); /* absolute timers called first */
572	timers_reify (); /* relative timers second */
573		851
574	/* queue idle watchers unless io or timers are pending */	852	/* queue idle watchers unless io or timers are pending */
575	if (!pendingcnt)	853	if (!pendingcnt)
576	queue_events ((W *)idles, idlecnt, EV_IDLE);	854	queue_events ((W *)idles, idlecnt, EV_IDLE);
577		855
578	/* queue check and possibly idle watchers */	856	/* queue check watchers, to be executed first */
		857	if (checkcnt)
579	queue_events ((W *)checks, checkcnt, EV_CHECK);	858	queue_events ((W *)checks, checkcnt, EV_CHECK);
580		859
581	call_pending ();	860	call_pending ();
582	}	861	}
583	while (!ev_loop_done);	862	while (!ev_loop_done);
		863
		864	if (ev_loop_done != 2)
		865	ev_loop_done = 0;
584	}	866	}
585		867
586	/*****************************************************************************/	868	/*****************************************************************************/
587		869
588	static void	870	static void
…		…
606	head = &(*head)->next;	888	head = &(*head)->next;
607	}	889	}
608	}	890	}
609		891
610	static void	892	static void
		893	ev_clear_pending (W w)
		894	{
		895	if (w->pending)
		896	{
		897	pendings [ABSPRI (w)][w->pending - 1].w = 0;
		898	w->pending = 0;
		899	}
		900	}
		901
		902	static void
611	ev_start (W w, int active)	903	ev_start (W w, int active)
612	{	904	{
613	w->pending = 0;	905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		907
614	w->active = active;	908	w->active = active;
615	}	909	}
616		910
617	static void	911	static void
618	ev_stop (W w)	912	ev_stop (W w)
619	{	913	{
620	if (w->pending)
621	pendings [w->pending - 1].w = 0;
622
623	w->active = 0;	914	w->active = 0;
624	}	915	}
625		916
626	/*****************************************************************************/	917	/*****************************************************************************/
627		918
628	void	919	void
629	evio_start (struct ev_io *w)	920	ev_io_start (struct ev_io *w)
630	{	921	{
		922	int fd = w->fd;
		923
631	if (ev_is_active (w))	924	if (ev_is_active (w))
632	return;	925	return;
633		926
634	int fd = w->fd;	927	assert (("ev_io_start called with negative fd", fd >= 0));
635		928
636	ev_start ((W)w, 1);	929	ev_start ((W)w, 1);
637	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
638	wlist_add ((WL *)&anfds[fd].head, (WL)w);	931	wlist_add ((WL *)&anfds[fd].head, (WL)w);
639		932
640	++fdchangecnt;	933	fd_change (fd);
641	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
642	fdchanges [fdchangecnt - 1] = fd;
643	}	934	}
644		935
645	void	936	void
646	evio_stop (struct ev_io *w)	937	ev_io_stop (struct ev_io *w)
647	{	938	{
		939	ev_clear_pending ((W)w);
648	if (!ev_is_active (w))	940	if (!ev_is_active (w))
649	return;	941	return;
650		942
651	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
652	ev_stop ((W)w);	944	ev_stop ((W)w);
653		945
654	++fdchangecnt;	946	fd_change (w->fd);
655	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
656	fdchanges [fdchangecnt - 1] = w->fd;
657	}	947	}
658		948
659
660	void	949	void
661	evtimer_start (struct ev_timer *w)	950	ev_timer_start (struct ev_timer *w)
662	{	951	{
663	if (ev_is_active (w))	952	if (ev_is_active (w))
664	return;	953	return;
665		954
666	w->at += now;	955	w->at += now;
		956
		957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
667		958
668	ev_start ((W)w, ++timercnt);	959	ev_start ((W)w, ++timercnt);
669	array_needsize (timers, timermax, timercnt, );	960	array_needsize (timers, timermax, timercnt, );
670	timers [timercnt - 1] = w;	961	timers [timercnt - 1] = w;
671	upheap ((WT *)timers, timercnt - 1);	962	upheap ((WT *)timers, timercnt - 1);
672	}	963	}
673		964
674	void	965	void
675	evtimer_stop (struct ev_timer *w)	966	ev_timer_stop (struct ev_timer *w)
676	{	967	{
		968	ev_clear_pending ((W)w);
677	if (!ev_is_active (w))	969	if (!ev_is_active (w))
678	return;	970	return;
679		971
680	if (w->active < timercnt--)	972	if (w->active < timercnt--)
681	{	973	{
682	timers [w->active - 1] = timers [timercnt];	974	timers [w->active - 1] = timers [timercnt];
683	downheap ((WT *)timers, timercnt, w->active - 1);	975	downheap ((WT *)timers, timercnt, w->active - 1);
684	}	976	}
685		977
		978	w->at = w->repeat;
		979
686	ev_stop ((W)w);	980	ev_stop ((W)w);
687	}	981	}
688		982
689	void	983	void
690	evperiodic_start (struct ev_periodic *w)	984	ev_timer_again (struct ev_timer *w)
691	{	985	{
692	if (ev_is_active (w))	986	if (ev_is_active (w))
		987	{
		988	if (w->repeat)
		989	{
		990	w->at = now + w->repeat;
		991	downheap ((WT *)timers, timercnt, w->active - 1);
		992	}
		993	else
		994	ev_timer_stop (w);
		995	}
		996	else if (w->repeat)
		997	ev_timer_start (w);
		998	}
		999
		1000	void
		1001	ev_periodic_start (struct ev_periodic *w)
		1002	{
		1003	if (ev_is_active (w))
693	return;	1004	return;
		1005
		1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
694		1007
695	/* this formula differs from the one in periodic_reify because we do not always round up */	1008	/* this formula differs from the one in periodic_reify because we do not always round up */
696	if (w->interval)	1009	if (w->interval)
697	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
698		1011
…		…
701	periodics [periodiccnt - 1] = w;	1014	periodics [periodiccnt - 1] = w;
702	upheap ((WT *)periodics, periodiccnt - 1);	1015	upheap ((WT *)periodics, periodiccnt - 1);
703	}	1016	}
704		1017
705	void	1018	void
706	evperiodic_stop (struct ev_periodic *w)	1019	ev_periodic_stop (struct ev_periodic *w)
707	{	1020	{
		1021	ev_clear_pending ((W)w);
708	if (!ev_is_active (w))	1022	if (!ev_is_active (w))
709	return;	1023	return;
710		1024
711	if (w->active < periodiccnt--)	1025	if (w->active < periodiccnt--)
712	{	1026	{
…		…
715	}	1029	}
716		1030
717	ev_stop ((W)w);	1031	ev_stop ((W)w);
718	}	1032	}
719		1033
		1034	#ifndef SA_RESTART
		1035	# define SA_RESTART 0
		1036	#endif
		1037
720	void	1038	void
721	evsignal_start (struct ev_signal *w)	1039	ev_signal_start (struct ev_signal *w)
722	{	1040	{
723	if (ev_is_active (w))	1041	if (ev_is_active (w))
724	return;	1042	return;
		1043
		1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
725		1045
726	ev_start ((W)w, 1);	1046	ev_start ((W)w, 1);
727	array_needsize (signals, signalmax, w->signum, signals_init);	1047	array_needsize (signals, signalmax, w->signum, signals_init);
728	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
729		1049
730	if (!w->next)	1050	if (!w->next)
731	{	1051	{
732	struct sigaction sa;	1052	struct sigaction sa;
733	sa.sa_handler = sighandler;	1053	sa.sa_handler = sighandler;
734	sigfillset (&sa.sa_mask);	1054	sigfillset (&sa.sa_mask);
735	sa.sa_flags = 0;	1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
736	sigaction (w->signum, &sa, 0);	1056	sigaction (w->signum, &sa, 0);
737	}	1057	}
738	}	1058	}
739		1059
740	void	1060	void
741	evsignal_stop (struct ev_signal *w)	1061	ev_signal_stop (struct ev_signal *w)
742	{	1062	{
		1063	ev_clear_pending ((W)w);
743	if (!ev_is_active (w))	1064	if (!ev_is_active (w))
744	return;	1065	return;
745		1066
746	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
747	ev_stop ((W)w);	1068	ev_stop ((W)w);
748		1069
749	if (!signals [w->signum - 1].head)	1070	if (!signals [w->signum - 1].head)
750	signal (w->signum, SIG_DFL);	1071	signal (w->signum, SIG_DFL);
751	}	1072	}
752		1073
		1074	void
753	void evidle_start (struct ev_idle *w)	1075	ev_idle_start (struct ev_idle *w)
754	{	1076	{
755	if (ev_is_active (w))	1077	if (ev_is_active (w))
756	return;	1078	return;
757		1079
758	ev_start ((W)w, ++idlecnt);	1080	ev_start ((W)w, ++idlecnt);
759	array_needsize (idles, idlemax, idlecnt, );	1081	array_needsize (idles, idlemax, idlecnt, );
760	idles [idlecnt - 1] = w;	1082	idles [idlecnt - 1] = w;
761	}	1083	}
762		1084
		1085	void
763	void evidle_stop (struct ev_idle *w)	1086	ev_idle_stop (struct ev_idle *w)
764	{	1087	{
		1088	ev_clear_pending ((W)w);
		1089	if (ev_is_active (w))
		1090	return;
		1091
765	idles [w->active - 1] = idles [--idlecnt];	1092	idles [w->active - 1] = idles [--idlecnt];
766	ev_stop ((W)w);	1093	ev_stop ((W)w);
767	}	1094	}
768		1095
		1096	void
		1097	ev_prepare_start (struct ev_prepare *w)
		1098	{
		1099	if (ev_is_active (w))
		1100	return;
		1101
		1102	ev_start ((W)w, ++preparecnt);
		1103	array_needsize (prepares, preparemax, preparecnt, );
		1104	prepares [preparecnt - 1] = w;
		1105	}
		1106
		1107	void
		1108	ev_prepare_stop (struct ev_prepare *w)
		1109	{
		1110	ev_clear_pending ((W)w);
		1111	if (ev_is_active (w))
		1112	return;
		1113
		1114	prepares [w->active - 1] = prepares [--preparecnt];
		1115	ev_stop ((W)w);
		1116	}
		1117
		1118	void
769	void evcheck_start (struct ev_check *w)	1119	ev_check_start (struct ev_check *w)
770	{	1120	{
771	if (ev_is_active (w))	1121	if (ev_is_active (w))
772	return;	1122	return;
773		1123
774	ev_start ((W)w, ++checkcnt);	1124	ev_start ((W)w, ++checkcnt);
775	array_needsize (checks, checkmax, checkcnt, );	1125	array_needsize (checks, checkmax, checkcnt, );
776	checks [checkcnt - 1] = w;	1126	checks [checkcnt - 1] = w;
777	}	1127	}
778		1128
		1129	void
779	void evcheck_stop (struct ev_check *w)	1130	ev_check_stop (struct ev_check *w)
780	{	1131	{
		1132	ev_clear_pending ((W)w);
		1133	if (ev_is_active (w))
		1134	return;
		1135
781	checks [w->active - 1] = checks [--checkcnt];	1136	checks [w->active - 1] = checks [--checkcnt];
782	ev_stop ((W)w);	1137	ev_stop ((W)w);
783	}	1138	}
784		1139
		1140	void
		1141	ev_child_start (struct ev_child *w)
		1142	{
		1143	if (ev_is_active (w))
		1144	return;
		1145
		1146	ev_start ((W)w, 1);
		1147	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1148	}
		1149
		1150	void
		1151	ev_child_stop (struct ev_child *w)
		1152	{
		1153	ev_clear_pending ((W)w);
		1154	if (ev_is_active (w))
		1155	return;
		1156
		1157	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1158	ev_stop ((W)w);
		1159	}
		1160
785	/*****************************************************************************/	1161	/*****************************************************************************/
786		1162
		1163	struct ev_once
		1164	{
		1165	struct ev_io io;
		1166	struct ev_timer to;
		1167	void (cb)(int revents, void arg);
		1168	void *arg;
		1169	};
		1170
		1171	static void
		1172	once_cb (struct ev_once *once, int revents)
		1173	{
		1174	void (cb)(int revents, void arg) = once->cb;
		1175	void *arg = once->arg;
		1176
		1177	ev_io_stop (&once->io);
		1178	ev_timer_stop (&once->to);
		1179	free (once);
		1180
		1181	cb (revents, arg);
		1182	}
		1183
		1184	static void
		1185	once_cb_io (struct ev_io *w, int revents)
		1186	{
		1187	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
		1188	}
		1189
		1190	static void
		1191	once_cb_to (struct ev_timer *w, int revents)
		1192	{
		1193	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
		1194	}
		1195
		1196	void
		1197	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
		1198	{
		1199	struct ev_once *once = malloc (sizeof (struct ev_once));
		1200
		1201	if (!once)
		1202	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
		1203	else
		1204	{
		1205	once->cb = cb;
		1206	once->arg = arg;
		1207
		1208	ev_watcher_init (&once->io, once_cb_io);
		1209	if (fd >= 0)
		1210	{
		1211	ev_io_set (&once->io, fd, events);
		1212	ev_io_start (&once->io);
		1213	}
		1214
		1215	ev_watcher_init (&once->to, once_cb_to);
		1216	if (timeout >= 0.)
		1217	{
		1218	ev_timer_set (&once->to, timeout, 0.);
		1219	ev_timer_start (&once->to);
		1220	}
		1221	}
		1222	}
		1223
		1224	/*****************************************************************************/
		1225
787	#if 1	1226	#if 0
788		1227
789	struct ev_io wio;	1228	struct ev_io wio;
790		1229
791	static void	1230	static void
792	sin_cb (struct ev_io *w, int revents)	1231	sin_cb (struct ev_io *w, int revents)
…		…
796		1235
797	static void	1236	static void
798	ocb (struct ev_timer *w, int revents)	1237	ocb (struct ev_timer *w, int revents)
799	{	1238	{
800	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1239	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
801	evtimer_stop (w);	1240	ev_timer_stop (w);
802	evtimer_start (w);	1241	ev_timer_start (w);
803	}	1242	}
804		1243
805	static void	1244	static void
806	scb (struct ev_signal *w, int revents)	1245	scb (struct ev_signal *w, int revents)
807	{	1246	{
808	fprintf (stderr, "signal %x,%d\n", revents, w->signum);	1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
809	evio_stop (&wio);	1248	ev_io_stop (&wio);
810	evio_start (&wio);	1249	ev_io_start (&wio);
811	}	1250	}
812		1251
813	static void	1252	static void
814	gcb (struct ev_signal *w, int revents)	1253	gcb (struct ev_signal *w, int revents)
815	{	1254	{
…		…
819		1258
820	int main (void)	1259	int main (void)
821	{	1260	{
822	ev_init (0);	1261	ev_init (0);
823		1262
824	evio_init (&wio, sin_cb, 0, EV_READ);	1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
825	evio_start (&wio);	1264	ev_io_start (&wio);
826		1265
827	struct ev_timer t[10000];	1266	struct ev_timer t[10000];
828		1267
829	#if 0	1268	#if 0
830	int i;	1269	int i;
831	for (i = 0; i < 10000; ++i)	1270	for (i = 0; i < 10000; ++i)
832	{	1271	{
833	struct ev_timer *w = t + i;	1272	struct ev_timer *w = t + i;
834	evw_init (w, ocb, i);	1273	ev_watcher_init (w, ocb, i);
835	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);	1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
836	evtimer_start (w);	1275	ev_timer_start (w);
837	if (drand48 () < 0.5)	1276	if (drand48 () < 0.5)
838	evtimer_stop (w);	1277	ev_timer_stop (w);
839	}	1278	}
840	#endif	1279	#endif
841		1280
842	struct ev_timer t1;	1281	struct ev_timer t1;
843	evtimer_init (&t1, ocb, 5, 10);	1282	ev_timer_init (&t1, ocb, 5, 10);
844	evtimer_start (&t1);	1283	ev_timer_start (&t1);
845		1284
846	struct ev_signal sig;	1285	struct ev_signal sig;
847	evsignal_init (&sig, scb, SIGQUIT);	1286	ev_signal_init (&sig, scb, SIGQUIT);
848	evsignal_start (&sig);	1287	ev_signal_start (&sig);
849		1288
850	struct ev_check cw;	1289	struct ev_check cw;
851	evcheck_init (&cw, gcb);	1290	ev_check_init (&cw, gcb);
852	evcheck_start (&cw);	1291	ev_check_start (&cw);
853		1292
854	struct ev_idle iw;	1293	struct ev_idle iw;
855	evidle_init (&iw, gcb);	1294	ev_idle_init (&iw, gcb);
856	evidle_start (&iw);	1295	ev_idle_start (&iw);
857		1296
858	ev_loop (0);	1297	ev_loop (0);
859		1298
860	return 0;	1299	return 0;
861	}	1300	}

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Comparing libev/ev.c (file contents): Revision 1.12 by root, Wed Oct 31 09:23:17 2007 UTC vs. Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.12 by root, Wed Oct 31 09:23:17 2007 UTC vs.
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC