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Comparing libev/ev.c (file contents):
Revision 1.2 by root, Tue Oct 30 21:42:12 2007 UTC vs.
Revision 1.53 by root, Sat Nov 3 22:31:11 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>
		37	#include <unistd.h>
		38	#include <fcntl.h>
		39	#include <signal.h>
		40	#include <stddef.h>
3		41
4	#include <stdio.h>	42	#include <stdio.h>
5		43
		44	#include <assert.h>
6	#include <errno.h>	45	#include <errno.h>
		46	#include <sys/types.h>
		47	#ifndef WIN32
		48	# include <sys/wait.h>
		49	#endif
7	#include <sys/time.h>	50	#include <sys/time.h>
8	#include <time.h>	51	#include <time.h>
9		52
		53	/**/
		54
		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_USEV_POLL
		64	# define EV_USEV_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
10	#ifdef CLOCK_MONOTONIC	81	#ifndef CLOCK_MONOTONIC
		82	# undef EV_USE_MONOTONIC
11	# define HAVE_MONOTONIC 1	83	# define EV_USE_MONOTONIC 0
12	#endif	84	#endif
13		85
14	#define HAVE_EPOLL 1	86	#ifndef CLOCK_REALTIME
		87	# undef EV_USE_REALTIME
15	#define HAVE_REALTIME 1	88	# define EV_USE_REALTIME 0
16	#define HAVE_SELECT 0	89	#endif
17		90
18	#define MAX_BLOCKTIME 60.	91	/**/
		92
		93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
		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 */
19		97
20	#include "ev.h"	98	#include "ev.h"
21		99
		100	#if __GNUC__ >= 3
		101	# define expect(expr,value) __builtin_expect ((expr),(value))
		102	# define inline inline
		103	#else
		104	# define expect(expr,value) (expr)
		105	# define inline static
		106	#endif
		107
		108	#define expect_false(expr) expect ((expr) != 0, 0)
		109	#define expect_true(expr) expect ((expr) != 0, 1)
		110
		111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		113
22	struct ev_watcher {	114	typedef struct ev_watcher *W;
23	EV_WATCHER (ev_watcher);	115	typedef struct ev_watcher_list *WL;
		116	typedef struct ev_watcher_time *WT;
		117
		118	/*****************************************************************************/
		119
		120	typedef struct
		121	{
		122	struct ev_watcher_list *head;
		123	unsigned char events;
		124	unsigned char reify;
		125	} ANFD;
		126
		127	typedef struct
		128	{
		129	W w;
		130	int events;
		131	} ANPENDING;
		132
		133	#ifdef EV_MULTIPLICITY
		134	struct ev_loop
		135	{
		136	# define VAR(name,decl) decl
		137	# include "ev_vars.h"
24	};	138	};
		139	#else
		140	# define VAR(name,decl) static decl
		141	# include "ev_vars.h"
		142	#endif
		143	#undef VAR
25		144
26	struct ev_watcher_list {	145	/*****************************************************************************/
27	EV_WATCHER_LIST (ev_watcher_list);
28	};
29		146
30	ev_tstamp ev_now;	147	inline ev_tstamp
31	int ev_method;
32
33	static int have_monotonic; /* runtime */
34
35	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
36	static void (*method_reify)(void);
37	static void (*method_poll)(ev_tstamp timeout);
38
39	ev_tstamp
40	ev_time (void)	148	ev_time (void)
41	{	149	{
42	#if HAVE_REALTIME	150	#if EV_USE_REALTIME
43	struct timespec ts;	151	struct timespec ts;
44	clock_gettime (CLOCK_REALTIME, &ts);	152	clock_gettime (CLOCK_REALTIME, &ts);
45	return ts.tv_sec + ts.tv_nsec * 1e-9;	153	return ts.tv_sec + ts.tv_nsec * 1e-9;
46	#else	154	#else
47	struct timeval tv;	155	struct timeval tv;
48	gettimeofday (&tv, 0);	156	gettimeofday (&tv, 0);
49	return tv.tv_sec + tv.tv_usec * 1e-6;	157	return tv.tv_sec + tv.tv_usec * 1e-6;
50	#endif	158	#endif
51	}	159	}
52		160
53	static ev_tstamp	161	inline ev_tstamp
54	get_clock (void)	162	get_clock (void)
55	{	163	{
56	#if HAVE_MONOTONIC	164	#if EV_USE_MONOTONIC
57	if (have_monotonic)	165	if (expect_true (have_monotonic))
58	{	166	{
59	struct timespec ts;	167	struct timespec ts;
60	clock_gettime (CLOCK_MONOTONIC, &ts);	168	clock_gettime (CLOCK_MONOTONIC, &ts);
61	return ts.tv_sec + ts.tv_nsec * 1e-9;	169	return ts.tv_sec + ts.tv_nsec * 1e-9;
62	}	170	}
63	#endif	171	#endif
64		172
65	return ev_time ();	173	return ev_time ();
66	}	174	}
67		175
		176	ev_tstamp
		177	ev_now (EV_P)
		178	{
		179	return rt_now;
		180	}
		181
		182	#define array_roundsize(base,n) ((n) | 4 & ~3)
		183
68	#define array_needsize(base,cur,cnt,init) \	184	#define array_needsize(base,cur,cnt,init) \
69	if ((cnt) > cur) \	185	if (expect_false ((cnt) > cur)) \
70	{ \	186	{ \
71	int newcnt = cur ? cur << 1 : 16; \	187	int newcnt = cur; \
72	fprintf (stderr, "resize(" # base ") from %d to %d\n", cur, newcnt);\	188	do \
		189	{ \
		190	newcnt = array_roundsize (base, newcnt << 1); \
		191	} \
		192	while ((cnt) > newcnt); \
		193	\
73	base = realloc (base, sizeof (*base) * (newcnt)); \	194	base = realloc (base, sizeof (*base) * (newcnt)); \
74	init (base + cur, newcnt - cur); \	195	init (base + cur, newcnt - cur); \
75	cur = newcnt; \	196	cur = newcnt; \
76	}	197	}
77		198
78	typedef struct	199	/*****************************************************************************/
79	{
80	struct ev_io *head;
81	unsigned char wev, rev; /* want, received event set */
82	} ANFD;
83
84	static ANFD *anfds;
85	static int anfdmax;
86
87	static int *fdchanges;
88	static int fdchangemax, fdchangecnt;
89		200
90	static void	201	static void
91	anfds_init (ANFD *base, int count)	202	anfds_init (ANFD *base, int count)
92	{	203	{
93	while (count--)	204	while (count--)
94	{	205	{
95	base->head = 0;	206	base->head = 0;
96	base->wev = base->rev = EV_NONE;	207	base->events = EV_NONE;
		208	base->reify = 0;
		209
97	++base;	210	++base;
98	}	211	}
99	}	212	}
100		213
101	typedef struct
102	{
103	struct ev_watcher *w;
104	int events;
105	} ANPENDING;
106
107	static ANPENDING *pendings;
108	static int pendingmax, pendingcnt;
109
110	static void	214	static void
111	event (struct ev_watcher *w, int events)	215	event (EV_P_ W w, int events)
112	{	216	{
		217	if (w->pending)
		218	{
		219	pendings [ABSPRI (w)][w->pending - 1].events |= events;
		220	return;
		221	}
		222
113	w->pending = ++pendingcnt;	223	w->pending = ++pendingcnt [ABSPRI (w)];
114	array_needsize (pendings, pendingmax, pendingcnt, );	224	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
115	pendings [pendingcnt - 1].w = w;	225	pendings [ABSPRI (w)][w->pending - 1].w = w;
116	pendings [pendingcnt - 1].events = events;	226	pendings [ABSPRI (w)][w->pending - 1].events = events;
117	}	227	}
118		228
119	static void	229	static void
		230	queue_events (EV_P_ W *events, int eventcnt, int type)
		231	{
		232	int i;
		233
		234	for (i = 0; i < eventcnt; ++i)
		235	event (EV_A_ events [i], type);
		236	}
		237
		238	static void
120	fd_event (int fd, int events)	239	fd_event (EV_P_ int fd, int events)
121	{	240	{
122	ANFD *anfd = anfds + fd;	241	ANFD *anfd = anfds + fd;
123	struct ev_io *w;	242	struct ev_io *w;
124		243
125	for (w = anfd->head; w; w = w->next)	244	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
126	{	245	{
127	int ev = w->events & events;	246	int ev = w->events & events;
128		247
129	if (ev)	248	if (ev)
130	event ((struct ev_watcher *)w, ev);	249	event (EV_A_ (W)w, ev);
		250	}
		251	}
		252
		253	/*****************************************************************************/
		254
		255	static void
		256	fd_reify (EV_P)
		257	{
		258	int i;
		259
		260	for (i = 0; i < fdchangecnt; ++i)
		261	{
		262	int fd = fdchanges [i];
		263	ANFD *anfd = anfds + fd;
		264	struct ev_io *w;
		265
		266	int events = 0;
		267
		268	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
		269	events |= w->events;
		270
		271	anfd->reify = 0;
		272
		273	if (anfd->events != events)
		274	{
		275	method_modify (EV_A_ fd, anfd->events, events);
		276	anfd->events = events;
		277	}
		278	}
		279
		280	fdchangecnt = 0;
		281	}
		282
		283	static void
		284	fd_change (EV_P_ int fd)
		285	{
		286	if (anfds [fd].reify || fdchangecnt < 0)
		287	return;
		288
		289	anfds [fd].reify = 1;
		290
		291	++fdchangecnt;
		292	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
		293	fdchanges [fdchangecnt - 1] = fd;
		294	}
		295
		296	static void
		297	fd_kill (EV_P_ int fd)
		298	{
		299	struct ev_io *w;
		300
		301	while ((w = (struct ev_io *)anfds [fd].head))
		302	{
		303	ev_io_stop (EV_A_ w);
		304	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		305	}
		306	}
		307
		308	/* called on EBADF to verify fds */
		309	static void
		310	fd_ebadf (EV_P)
		311	{
		312	int fd;
		313
		314	for (fd = 0; fd < anfdmax; ++fd)
		315	if (anfds [fd].events)
		316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
		317	fd_kill (EV_A_ fd);
		318	}
		319
		320	/* called on ENOMEM in select/poll to kill some fds and retry */
		321	static void
		322	fd_enomem (EV_P)
		323	{
		324	int fd = anfdmax;
		325
		326	while (fd--)
		327	if (anfds [fd].events)
		328	{
		329	close (fd);
		330	fd_kill (EV_A_ fd);
		331	return;
131	}	332	}
132	}	333	}
133		334
134	static struct ev_timer **timers;	335	/*****************************************************************************/
135	static int timermax, timercnt;
136		336
137	static void	337	static void
138	upheap (int k)	338	upheap (WT *timers, int k)
139	{	339	{
140	struct ev_timer *w = timers [k];	340	WT w = timers [k];
141		341
142	while (k && timers [k >> 1]->at > w->at)	342	while (k && timers [k >> 1]->at > w->at)
143	{	343	{
144	timers [k] = timers [k >> 1];	344	timers [k] = timers [k >> 1];
145	timers [k]->active = k + 1;	345	timers [k]->active = k + 1;
…		…
150	timers [k]->active = k + 1;	350	timers [k]->active = k + 1;
151		351
152	}	352	}
153		353
154	static void	354	static void
155	downheap (int k)	355	downheap (WT *timers, int N, int k)
156	{	356	{
157	struct ev_timer *w = timers [k];	357	WT w = timers [k];
158		358
159	while (k < (timercnt >> 1))	359	while (k < (N >> 1))
160	{	360	{
161	int j = k << 1;	361	int j = k << 1;
162		362
163	if (j + 1 < timercnt && timers [j]->at > timers [j + 1]->at)	363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
164	++j;	364	++j;
165		365
166	if (w->at <= timers [j]->at)	366	if (w->at <= timers [j]->at)
167	break;	367	break;
168		368
…		…
173		373
174	timers [k] = w;	374	timers [k] = w;
175	timers [k]->active = k + 1;	375	timers [k]->active = k + 1;
176	}	376	}
177		377
178	static struct ev_signal **signals;	378	/*****************************************************************************/
		379
		380	typedef struct
		381	{
		382	struct ev_watcher_list *head;
		383	sig_atomic_t volatile gotsig;
		384	} ANSIG;
		385
		386	static ANSIG *signals;
179	static int signalmax, signalcnt;	387	static int signalmax;
180		388
		389	static int sigpipe [2];
		390	static sig_atomic_t volatile gotsig;
		391
181	static void	392	static void
182	signals_init (struct ev_signal **base, int count)	393	signals_init (ANSIG *base, int count)
183	{	394	{
184	while (count--)	395	while (count--)
185	*base++ = 0;	396	{
186	}	397	base->head = 0;
		398	base->gotsig = 0;
187		399
		400	++base;
		401	}
		402	}
		403
		404	static void
		405	sighandler (int signum)
		406	{
		407	signals [signum - 1].gotsig = 1;
		408
		409	if (!gotsig)
		410	{
		411	int old_errno = errno;
		412	gotsig = 1;
		413	write (sigpipe [1], &signum, 1);
		414	errno = old_errno;
		415	}
		416	}
		417
		418	static void
		419	sigcb (EV_P_ struct ev_io *iow, int revents)
		420	{
		421	struct ev_watcher_list *w;
		422	int signum;
		423
		424	read (sigpipe [0], &revents, 1);
		425	gotsig = 0;
		426
		427	for (signum = signalmax; signum--; )
		428	if (signals [signum].gotsig)
		429	{
		430	signals [signum].gotsig = 0;
		431
		432	for (w = signals [signum].head; w; w = w->next)
		433	event (EV_A_ (W)w, EV_SIGNAL);
		434	}
		435	}
		436
		437	static void
		438	siginit (EV_P)
		439	{
		440	#ifndef WIN32
		441	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
		442	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
		443
		444	/* rather than sort out wether we really need nb, set it */
		445	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
		446	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		447	#endif
		448
		449	ev_io_set (&sigev, sigpipe [0], EV_READ);
		450	ev_io_start (&sigev);
		451	ev_unref (EV_A); /* child watcher should not keep loop alive */
		452	}
		453
		454	/*****************************************************************************/
		455
		456	#ifndef WIN32
		457
		458	#ifndef WCONTINUED
		459	# define WCONTINUED 0
		460	#endif
		461
		462	static void
		463	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
		464	{
		465	struct ev_child *w;
		466
		467	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		468	if (w->pid == pid || !w->pid)
		469	{
		470	w->priority = sw->priority; /* need to do it *now* */
		471	w->rpid = pid;
		472	w->rstatus = status;
		473	event (EV_A_ (W)w, EV_CHILD);
		474	}
		475	}
		476
		477	static void
		478	childcb (EV_P_ struct ev_signal *sw, int revents)
		479	{
		480	int pid, status;
		481
		482	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
		483	{
		484	/* make sure we are called again until all childs have been reaped */
		485	event (EV_A_ (W)sw, EV_SIGNAL);
		486
		487	child_reap (EV_A_ sw, pid, pid, status);
		488	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		489	}
		490	}
		491
		492	#endif
		493
		494	/*****************************************************************************/
		495
		496	#if EV_USE_KQUEUE
		497	# include "ev_kqueue.c"
		498	#endif
188	#if HAVE_EPOLL	499	#if EV_USE_EPOLL
189	# include "ev_epoll.c"	500	# include "ev_epoll.c"
190	#endif	501	#endif
		502	#if EV_USEV_POLL
		503	# include "ev_poll.c"
		504	#endif
191	#if HAVE_SELECT	505	#if EV_USE_SELECT
192	# include "ev_select.c"	506	# include "ev_select.c"
193	#endif	507	#endif
194		508
195	int ev_init (int flags)	509	int
		510	ev_version_major (void)
196	{	511	{
		512	return EV_VERSION_MAJOR;
		513	}
		514
		515	int
		516	ev_version_minor (void)
		517	{
		518	return EV_VERSION_MINOR;
		519	}
		520
		521	/* return true if we are running with elevated privileges and should ignore env variables */
		522	static int
		523	enable_secure (void)
		524	{
		525	#ifdef WIN32
		526	return 0;
		527	#else
		528	return getuid () != geteuid ()
		529	|| getgid () != getegid ();
		530	#endif
		531	}
		532
		533	int
		534	ev_method (EV_P)
		535	{
		536	return method;
		537	}
		538
		539	int
		540	ev_init (EV_P_ int methods)
		541	{
		542	#ifdef EV_MULTIPLICITY
		543	memset (loop, 0, sizeof (struct ev_loop));
		544	#endif
		545
		546	if (!method)
		547	{
197	#if HAVE_MONOTONIC	548	#if EV_USE_MONOTONIC
198	{	549	{
199	struct timespec ts;	550	struct timespec ts;
200	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	551	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
201	have_monotonic = 1;	552	have_monotonic = 1;
202	}	553	}
203	#endif	554	#endif
204		555
205	ev_now = ev_time ();	556	rt_now = ev_time ();
		557	mn_now = get_clock ();
		558	now_floor = mn_now;
		559	diff = rt_now - mn_now;
206		560
		561	if (pipe (sigpipe))
		562	return 0;
		563
		564	if (methods == EVMETHOD_AUTO)
		565	if (!enable_secure () && getenv ("LIBmethodS"))
		566	methods = atoi (getenv ("LIBmethodS"));
		567	else
		568	methods = EVMETHOD_ANY;
		569
		570	method = 0;
		571	#if EV_USE_KQUEUE
		572	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		573	#endif
207	#if HAVE_EPOLL	574	#if EV_USE_EPOLL
208	if (epoll_init (flags))	575	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
209	return ev_method;
210	#endif	576	#endif
		577	#if EV_USEV_POLL
		578	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		579	#endif
211	#if HAVE_SELECT	580	#if EV_USE_SELECT
212	if (select_init (flags))	581	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
213	return ev_method;
214	#endif	582	#endif
215		583
216	ev_method = EVMETHOD_NONE;	584	if (method)
217	return ev_method;
218	}
219
220	void ev_prefork (void)
221	{
222	}
223
224	void ev_postfork_parent (void)
225	{
226	}
227
228	void ev_postfork_child (void)
229	{
230	#if HAVE_EPOLL
231	epoll_postfork_child ();
232	#endif
233	}
234
235	static void
236	call_pending ()
237	{
238	int i;
239
240	for (i = 0; i < pendingcnt; ++i)
241	{
242	ANPENDING *p = pendings + i;
243
244	if (p->w)
245	{	585	{
246	p->w->pending = 0;	586	ev_watcher_init (&sigev, sigcb);
247	p->w->cb (p->w, p->events);	587	ev_set_priority (&sigev, EV_MAXPRI);
		588	siginit (EV_A);
		589
		590	#ifndef WIN32
		591	ev_signal_init (&childev, childcb, SIGCHLD);
		592	ev_set_priority (&childev, EV_MAXPRI);
		593	ev_signal_start (EV_A_ &childev);
		594	ev_unref (EV_A); /* child watcher should not keep loop alive */
		595	#endif
248	}	596	}
249	}	597	}
250		598
251	pendingcnt = 0;	599	return method;
252	}	600	}
253		601
		602	/*****************************************************************************/
		603
		604	void
		605	ev_fork_prepare (void)
		606	{
		607	/* nop */
		608	}
		609
		610	void
		611	ev_fork_parent (void)
		612	{
		613	/* nop */
		614	}
		615
		616	void
		617	ev_fork_child (void)
		618	{
		619	#if EV_USE_EPOLL
		620	if (method == EVMETHOD_EPOLL)
		621	epoll_postfork_child ();
		622	#endif
		623
		624	ev_io_stop (&sigev);
		625	close (sigpipe [0]);
		626	close (sigpipe [1]);
		627	pipe (sigpipe);
		628	siginit ();
		629	}
		630
		631	/*****************************************************************************/
		632
254	static void	633	static void
		634	call_pending (EV_P)
		635	{
		636	int pri;
		637
		638	for (pri = NUMPRI; pri--; )
		639	while (pendingcnt [pri])
		640	{
		641	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
		642
		643	if (p->w)
		644	{
		645	p->w->pending = 0;
		646	p->w->cb (EV_A_ p->w, p->events);
		647	}
		648	}
		649	}
		650
		651	static void
255	timer_reify (void)	652	timers_reify (EV_P)
256	{	653	{
257	while (timercnt && timers [0]->at <= ev_now)	654	while (timercnt && timers [0]->at <= mn_now)
258	{	655	{
259	struct ev_timer *w = timers [0];	656	struct ev_timer *w = timers [0];
260		657
261	fprintf (stderr, "0 %f, %d c%d\n", w->at, w->active, timercnt);//D
262	/* first reschedule timer */	658	/* first reschedule or stop timer */
263	if (w->repeat)	659	if (w->repeat)
264	{	660	{
265	fprintf (stderr, "a %f now %f repeat %f, %f\n", w->at, ev_now, w->repeat, w->repeat *1e30);//D	661	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
266	if (w->is_abs)
267	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;
268	else
269	w->at = ev_now + w->repeat;	662	w->at = mn_now + w->repeat;
270		663	downheap ((WT *)timers, timercnt, 0);
271	fprintf (stderr, "b %f\n", w->at);//D
272
273	downheap (0);
274	}	664	}
275	else	665	else
		666	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
		667
		668	event ((W)w, EV_TIMEOUT);
		669	}
		670	}
		671
		672	static void
		673	periodics_reify (EV_P)
		674	{
		675	while (periodiccnt && periodics [0]->at <= rt_now)
		676	{
		677	struct ev_periodic *w = periodics [0];
		678
		679	/* first reschedule or stop timer */
		680	if (w->interval)
276	{	681	{
277	fprintf (stderr, "c %f, %d c%d\n", w->at, w->active, timercnt);//D	682	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
278	evtimer_stop (w); /* nonrepeating: stop timer */	683	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
		684	downheap ((WT *)periodics, periodiccnt, 0);
279	}	685	}
		686	else
		687	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
280		688
281	event ((struct ev_watcher *)w, EV_TIMEOUT);	689	event (EV_A_ (W)w, EV_PERIODIC);
		690	}
		691	}
		692
		693	static void
		694	periodics_reschedule (EV_P_ ev_tstamp diff)
		695	{
		696	int i;
		697
		698	/* adjust periodics after time jump */
		699	for (i = 0; i < periodiccnt; ++i)
282	}	700	{
283	}	701	struct ev_periodic *w = periodics [i];
284		702
285	int ev_loop_done;	703	if (w->interval)
		704	{
		705	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
286		706
		707	if (fabs (diff) >= 1e-4)
		708	{
		709	ev_periodic_stop (EV_A_ w);
		710	ev_periodic_start (EV_A_ w);
		711
		712	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		713	}
		714	}
		715	}
		716	}
		717
		718	inline int
		719	time_update_monotonic (EV_P)
		720	{
		721	mn_now = get_clock ();
		722
		723	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		724	{
		725	rt_now = mn_now + diff;
		726	return 0;
		727	}
		728	else
		729	{
		730	now_floor = mn_now;
		731	rt_now = ev_time ();
		732	return 1;
		733	}
		734	}
		735
		736	static void
		737	time_update (EV_P)
		738	{
		739	int i;
		740
		741	#if EV_USE_MONOTONIC
		742	if (expect_true (have_monotonic))
		743	{
		744	if (time_update_monotonic (EV_A))
		745	{
		746	ev_tstamp odiff = diff;
		747
		748	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		749	{
		750	diff = rt_now - mn_now;
		751
		752	if (fabs (odiff - diff) < MIN_TIMEJUMP)
		753	return; /* all is well */
		754
		755	rt_now = ev_time ();
		756	mn_now = get_clock ();
		757	now_floor = mn_now;
		758	}
		759
		760	periodics_reschedule (EV_A_ diff - odiff);
		761	/* no timer adjustment, as the monotonic clock doesn't jump */
		762	}
		763	}
		764	else
		765	#endif
		766	{
		767	rt_now = ev_time ();
		768
		769	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
		770	{
		771	periodics_reschedule (EV_A_ rt_now - mn_now);
		772
		773	/* adjust timers. this is easy, as the offset is the same for all */
		774	for (i = 0; i < timercnt; ++i)
		775	timers [i]->at += diff;
		776	}
		777
		778	mn_now = rt_now;
		779	}
		780	}
		781
		782	void
		783	ev_ref (EV_P)
		784	{
		785	++activecnt;
		786	}
		787
		788	void
		789	ev_unref (EV_P)
		790	{
		791	--activecnt;
		792	}
		793
		794	static int loop_done;
		795
		796	void
287	int ev_loop (int flags)	797	ev_loop (EV_P_ int flags)
288	{	798	{
289	double block;	799	double block;
290	ev_loop_done = flags & EVLOOP_ONESHOT;	800	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
291		801
292	do	802	do
293	{	803	{
		804	/* queue check watchers (and execute them) */
		805	if (expect_false (preparecnt))
		806	{
		807	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
		808	call_pending (EV_A);
		809	}
		810
294	/* update fd-related kernel structures */	811	/* update fd-related kernel structures */
295	method_reify (); fdchangecnt = 0;	812	fd_reify (EV_A);
296		813
297	/* calculate blocking time */	814	/* calculate blocking time */
		815
		816	/* we only need this for !monotonic clockor timers, but as we basically
		817	always have timers, we just calculate it always */
		818	#if EV_USE_MONOTONIC
		819	if (expect_true (have_monotonic))
		820	time_update_monotonic (EV_A);
		821	else
		822	#endif
		823	{
298	ev_now = ev_time ();	824	rt_now = ev_time ();
		825	mn_now = rt_now;
		826	}
299		827
300	if (flags & EVLOOP_NONBLOCK)	828	if (flags & EVLOOP_NONBLOCK || idlecnt)
301	block = 0.;	829	block = 0.;
302	else if (!timercnt)
303	block = MAX_BLOCKTIME;
304	else	830	else
305	{	831	{
		832	block = MAX_BLOCKTIME;
		833
		834	if (timercnt)
		835	{
306	block = timers [0]->at - ev_now + method_fudge;	836	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
		837	if (block > to) block = to;
		838	}
		839
		840	if (periodiccnt)
		841	{
		842	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
		843	if (block > to) block = to;
		844	}
		845
307	if (block < 0.) block = 0.;	846	if (block < 0.) block = 0.;
308	else if (block > MAX_BLOCKTIME) block = MAX_BLOCKTIME;
309	}	847	}
310		848
311	fprintf (stderr, "block %f\n", block);//D
312	method_poll (block);	849	method_poll (EV_A_ block);
313		850
		851	/* update rt_now, do magic */
		852	time_update (EV_A);
		853
314	/* put pending timers into pendign queue and reschedule them */	854	/* queue pending timers and reschedule them */
315	timer_reify ();	855	timers_reify (EV_A); /* relative timers called last */
		856	periodics_reify (EV_A); /* absolute timers called first */
316		857
317	ev_now = ev_time ();	858	/* queue idle watchers unless io or timers are pending */
		859	if (!pendingcnt)
		860	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
		861
		862	/* queue check watchers, to be executed first */
		863	if (checkcnt)
		864	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
		865
318	call_pending ();	866	call_pending (EV_A);
319	}	867	}
320	while (!ev_loop_done);	868	while (activecnt && !loop_done);
321	}
322		869
323	static void	870	if (loop_done != 2)
324	wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem)	871	loop_done = 0;
		872	}
		873
		874	void
		875	ev_unloop (EV_P_ int how)
		876	{
		877	loop_done = how;
		878	}
		879
		880	/*****************************************************************************/
		881
		882	inline void
		883	wlist_add (WL *head, WL elem)
325	{	884	{
326	elem->next = *head;	885	elem->next = *head;
327	*head = elem;	886	*head = elem;
328	}	887	}
329		888
330	static void	889	inline void
331	wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem)	890	wlist_del (WL *head, WL elem)
332	{	891	{
333	while (*head)	892	while (*head)
334	{	893	{
335	if (*head == elem)	894	if (*head == elem)
336	{	895	{
…		…
340		899
341	head = &(*head)->next;	900	head = &(*head)->next;
342	}	901	}
343	}	902	}
344		903
345	static void	904	inline void
346	ev_start (struct ev_watcher *w, int active)	905	ev_clear_pending (EV_P_ W w)
347	{	906	{
		907	if (w->pending)
		908	{
		909	pendings [ABSPRI (w)][w->pending - 1].w = 0;
348	w->pending = 0;	910	w->pending = 0;
		911	}
		912	}
		913
		914	inline void
		915	ev_start (EV_P_ W w, int active)
		916	{
		917	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		918	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		919
349	w->active = active;	920	w->active = active;
		921	ev_ref (EV_A);
350	}	922	}
351		923
352	static void	924	inline void
353	ev_stop (struct ev_watcher *w)	925	ev_stop (EV_P_ W w)
354	{	926	{
355	if (w->pending)	927	ev_unref (EV_A);
356	pendings [w->pending - 1].w = 0;
357
358	w->active = 0;	928	w->active = 0;
359	/* nop */
360	}	929	}
361		930
		931	/*****************************************************************************/
		932
362	void	933	void
363	evio_start (struct ev_io *w)	934	ev_io_start (EV_P_ struct ev_io *w)
364	{	935	{
		936	int fd = w->fd;
		937
365	if (ev_is_active (w))	938	if (ev_is_active (w))
366	return;	939	return;
367		940
368	int fd = w->fd;	941	assert (("ev_io_start called with negative fd", fd >= 0));
369		942
370	ev_start ((struct ev_watcher *)w, 1);	943	ev_start (EV_A_ (W)w, 1);
371	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	944	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
372	wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w);	945	wlist_add ((WL *)&anfds[fd].head, (WL)w);
373		946
374	++fdchangecnt;	947	fd_change (EV_A_ fd);
375	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
376	fdchanges [fdchangecnt - 1] = fd;
377	}	948	}
378		949
379	void	950	void
380	evio_stop (struct ev_io *w)	951	ev_io_stop (EV_P_ struct ev_io *w)
381	{	952	{
		953	ev_clear_pending (EV_A_ (W)w);
382	if (!ev_is_active (w))	954	if (!ev_is_active (w))
383	return;	955	return;
384		956
385	wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w);	957	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
386	ev_stop ((struct ev_watcher *)w);	958	ev_stop (EV_A_ (W)w);
387		959
388	++fdchangecnt;	960	fd_change (EV_A_ w->fd);
389	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
390	fdchanges [fdchangecnt - 1] = w->fd;
391	}	961	}
392		962
393	void	963	void
394	evtimer_start (struct ev_timer *w)	964	ev_timer_start (EV_P_ struct ev_timer *w)
395	{	965	{
396	if (ev_is_active (w))	966	if (ev_is_active (w))
397	return;	967	return;
398		968
399	fprintf (stderr, "t1 %f a %d\n", w->at, w->is_abs);//D
400	if (w->is_abs)
401	{
402	/* this formula differs from the one in timer_reify becuse we do not round up */
403	if (w->repeat)
404	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;
405	}
406	else
407	w->at += ev_now;	969	w->at += mn_now;
408	fprintf (stderr, "t2 %f a %d\n", w->at, w->is_abs);//D
409		970
410	ev_start ((struct ev_watcher *)w, ++timercnt);	971	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		972
		973	ev_start (EV_A_ (W)w, ++timercnt);
411	array_needsize (timers, timermax, timercnt, );	974	array_needsize (timers, timermax, timercnt, );
412	timers [timercnt - 1] = w;	975	timers [timercnt - 1] = w;
413	upheap (timercnt - 1);	976	upheap ((WT *)timers, timercnt - 1);
414	}	977	}
415		978
416	void	979	void
417	evtimer_stop (struct ev_timer *w)	980	ev_timer_stop (EV_P_ struct ev_timer *w)
418	{	981	{
419	fprintf (stderr, "-topping %d, %d\n", w->active, timercnt);//D	982	ev_clear_pending (EV_A_ (W)w);
420	if (!ev_is_active (w))	983	if (!ev_is_active (w))
421	return;	984	return;
422		985
423	fprintf (stderr, "stopping %d, %d\n", w->active, timercnt);//D
424	if (w->active < timercnt)	986	if (w->active < timercnt--)
425	{	987	{
426	timers [w->active - 1] = timers [--timercnt];	988	timers [w->active - 1] = timers [timercnt];
427	downheap (w->active - 1);	989	downheap ((WT *)timers, timercnt, w->active - 1);
428	}	990	}
429		991
430	ev_stop ((struct ev_watcher *)w);	992	w->at = w->repeat;
431	}
432		993
		994	ev_stop (EV_A_ (W)w);
		995	}
		996
433	void	997	void
434	evsignal_start (struct ev_signal *w)	998	ev_timer_again (EV_P_ struct ev_timer *w)
435	{	999	{
436	if (ev_is_active (w))	1000	if (ev_is_active (w))
437	return;	1001	{
		1002	if (w->repeat)
		1003	{
		1004	w->at = mn_now + w->repeat;
		1005	downheap ((WT *)timers, timercnt, w->active - 1);
		1006	}
		1007	else
		1008	ev_timer_stop (EV_A_ w);
		1009	}
		1010	else if (w->repeat)
		1011	ev_timer_start (EV_A_ w);
		1012	}
438		1013
439	ev_start ((struct ev_watcher *)w, 1);	1014	void
		1015	ev_periodic_start (EV_P_ struct ev_periodic *w)
		1016	{
		1017	if (ev_is_active (w))
		1018	return;
		1019
		1020	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		1021
		1022	/* this formula differs from the one in periodic_reify because we do not always round up */
		1023	if (w->interval)
		1024	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
		1025
		1026	ev_start (EV_A_ (W)w, ++periodiccnt);
		1027	array_needsize (periodics, periodicmax, periodiccnt, );
		1028	periodics [periodiccnt - 1] = w;
		1029	upheap ((WT *)periodics, periodiccnt - 1);
		1030	}
		1031
		1032	void
		1033	ev_periodic_stop (EV_P_ struct ev_periodic *w)
		1034	{
		1035	ev_clear_pending (EV_A_ (W)w);
		1036	if (!ev_is_active (w))
		1037	return;
		1038
		1039	if (w->active < periodiccnt--)
		1040	{
		1041	periodics [w->active - 1] = periodics [periodiccnt];
		1042	downheap ((WT *)periodics, periodiccnt, w->active - 1);
		1043	}
		1044
		1045	ev_stop (EV_A_ (W)w);
		1046	}
		1047
		1048	#ifndef SA_RESTART
		1049	# define SA_RESTART 0
		1050	#endif
		1051
		1052	void
		1053	ev_signal_start (EV_P_ struct ev_signal *w)
		1054	{
		1055	if (ev_is_active (w))
		1056	return;
		1057
		1058	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1059
		1060	ev_start (EV_A_ (W)w, 1);
440	array_needsize (signals, signalmax, w->signum, signals_init);	1061	array_needsize (signals, signalmax, w->signum, signals_init);
441	wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w);	1062	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
442	}
443		1063
		1064	if (!w->next)
		1065	{
		1066	struct sigaction sa;
		1067	sa.sa_handler = sighandler;
		1068	sigfillset (&sa.sa_mask);
		1069	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
		1070	sigaction (w->signum, &sa, 0);
		1071	}
		1072	}
		1073
444	void	1074	void
445	evsignal_stop (struct ev_signal *w)	1075	ev_signal_stop (EV_P_ struct ev_signal *w)
446	{	1076	{
		1077	ev_clear_pending (EV_A_ (W)w);
447	if (!ev_is_active (w))	1078	if (!ev_is_active (w))
448	return;	1079	return;
449		1080
450	wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w);	1081	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
451	ev_stop ((struct ev_watcher *)w);	1082	ev_stop (EV_A_ (W)w);
		1083
		1084	if (!signals [w->signum - 1].head)
		1085	signal (w->signum, SIG_DFL);
		1086	}
		1087
		1088	void
		1089	ev_idle_start (EV_P_ struct ev_idle *w)
		1090	{
		1091	if (ev_is_active (w))
		1092	return;
		1093
		1094	ev_start (EV_A_ (W)w, ++idlecnt);
		1095	array_needsize (idles, idlemax, idlecnt, );
		1096	idles [idlecnt - 1] = w;
		1097	}
		1098
		1099	void
		1100	ev_idle_stop (EV_P_ struct ev_idle *w)
		1101	{
		1102	ev_clear_pending (EV_A_ (W)w);
		1103	if (ev_is_active (w))
		1104	return;
		1105
		1106	idles [w->active - 1] = idles [--idlecnt];
		1107	ev_stop (EV_A_ (W)w);
		1108	}
		1109
		1110	void
		1111	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1112	{
		1113	if (ev_is_active (w))
		1114	return;
		1115
		1116	ev_start (EV_A_ (W)w, ++preparecnt);
		1117	array_needsize (prepares, preparemax, preparecnt, );
		1118	prepares [preparecnt - 1] = w;
		1119	}
		1120
		1121	void
		1122	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1123	{
		1124	ev_clear_pending (EV_A_ (W)w);
		1125	if (ev_is_active (w))
		1126	return;
		1127
		1128	prepares [w->active - 1] = prepares [--preparecnt];
		1129	ev_stop (EV_A_ (W)w);
		1130	}
		1131
		1132	void
		1133	ev_check_start (EV_P_ struct ev_check *w)
		1134	{
		1135	if (ev_is_active (w))
		1136	return;
		1137
		1138	ev_start (EV_A_ (W)w, ++checkcnt);
		1139	array_needsize (checks, checkmax, checkcnt, );
		1140	checks [checkcnt - 1] = w;
		1141	}
		1142
		1143	void
		1144	ev_check_stop (EV_P_ struct ev_check *w)
		1145	{
		1146	ev_clear_pending (EV_A_ (W)w);
		1147	if (ev_is_active (w))
		1148	return;
		1149
		1150	checks [w->active - 1] = checks [--checkcnt];
		1151	ev_stop (EV_A_ (W)w);
		1152	}
		1153
		1154	void
		1155	ev_child_start (EV_P_ struct ev_child *w)
		1156	{
		1157	if (ev_is_active (w))
		1158	return;
		1159
		1160	ev_start (EV_A_ (W)w, 1);
		1161	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1162	}
		1163
		1164	void
		1165	ev_child_stop (EV_P_ struct ev_child *w)
		1166	{
		1167	ev_clear_pending (EV_A_ (W)w);
		1168	if (ev_is_active (w))
		1169	return;
		1170
		1171	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1172	ev_stop (EV_A_ (W)w);
452	}	1173	}
453		1174
454	/*****************************************************************************/	1175	/*****************************************************************************/
		1176
		1177	struct ev_once
		1178	{
		1179	struct ev_io io;
		1180	struct ev_timer to;
		1181	void (*cb)(int revents, void *arg);
		1182	void *arg;
		1183	};
		1184
		1185	static void
		1186	once_cb (EV_P_ struct ev_once *once, int revents)
		1187	{
		1188	void (*cb)(int revents, void *arg) = once->cb;
		1189	void *arg = once->arg;
		1190
		1191	ev_io_stop (EV_A_ &once->io);
		1192	ev_timer_stop (EV_A_ &once->to);
		1193	free (once);
		1194
		1195	cb (revents, arg);
		1196	}
		1197
		1198	static void
		1199	once_cb_io (EV_P_ struct ev_io *w, int revents)
		1200	{
		1201	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
		1202	}
		1203
		1204	static void
		1205	once_cb_to (EV_P_ struct ev_timer *w, int revents)
		1206	{
		1207	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
		1208	}
		1209
		1210	void
		1211	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
		1212	{
		1213	struct ev_once *once = malloc (sizeof (struct ev_once));
		1214
		1215	if (!once)
		1216	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
		1217	else
		1218	{
		1219	once->cb = cb;
		1220	once->arg = arg;
		1221
		1222	ev_watcher_init (&once->io, once_cb_io);
		1223	if (fd >= 0)
		1224	{
		1225	ev_io_set (&once->io, fd, events);
		1226	ev_io_start (EV_A_ &once->io);
		1227	}
		1228
		1229	ev_watcher_init (&once->to, once_cb_to);
		1230	if (timeout >= 0.)
		1231	{
		1232	ev_timer_set (&once->to, timeout, 0.);
		1233	ev_timer_start (EV_A_ &once->to);
		1234	}
		1235	}
		1236	}
		1237
		1238	/*****************************************************************************/
		1239
455	#if 1	1240	#if 0
		1241
		1242	struct ev_io wio;
456		1243
457	static void	1244	static void
458	sin_cb (struct ev_io *w, int revents)	1245	sin_cb (struct ev_io *w, int revents)
459	{	1246	{
460	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1247	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
461	}	1248	}
462		1249
463	static void	1250	static void
464	ocb (struct ev_timer *w, int revents)	1251	ocb (struct ev_timer *w, int revents)
465	{	1252	{
466	fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1253	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
		1254	ev_timer_stop (w);
		1255	ev_timer_start (w);
		1256	}
		1257
		1258	static void
		1259	scb (struct ev_signal *w, int revents)
		1260	{
		1261	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1262	ev_io_stop (&wio);
		1263	ev_io_start (&wio);
		1264	}
		1265
		1266	static void
		1267	gcb (struct ev_signal *w, int revents)
		1268	{
		1269	fprintf (stderr, "generic %x\n", revents);
		1270
467	}	1271	}
468		1272
469	int main (void)	1273	int main (void)
470	{	1274	{
471	struct ev_io sin;
472
473	ev_init (0);	1275	ev_init (0);
474		1276
475	evw_init (&sin, sin_cb, 55);
476	evio_set (&sin, 0, EV_READ);	1277	ev_io_init (&wio, sin_cb, 0, EV_READ);
477	evio_start (&sin);	1278	ev_io_start (&wio);
478		1279
479	struct ev_timer t[1000];	1280	struct ev_timer t[10000];
480		1281
		1282	#if 0
481	int i;	1283	int i;
482	for (i = 0; i < 1000; ++i)	1284	for (i = 0; i < 10000; ++i)
483	{	1285	{
484	struct ev_timer *w = t + i;	1286	struct ev_timer *w = t + i;
485	evw_init (w, ocb, i);	1287	ev_watcher_init (w, ocb, i);
486	evtimer_set_rel (w, drand48 (), 0);	1288	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
487	evtimer_start (w);	1289	ev_timer_start (w);
488	if (drand48 () < 0.5)	1290	if (drand48 () < 0.5)
489	evtimer_stop (w);	1291	ev_timer_stop (w);
490	}	1292	}
		1293	#endif
		1294
		1295	struct ev_timer t1;
		1296	ev_timer_init (&t1, ocb, 5, 10);
		1297	ev_timer_start (&t1);
		1298
		1299	struct ev_signal sig;
		1300	ev_signal_init (&sig, scb, SIGQUIT);
		1301	ev_signal_start (&sig);
		1302
		1303	struct ev_check cw;
		1304	ev_check_init (&cw, gcb);
		1305	ev_check_start (&cw);
		1306
		1307	struct ev_idle iw;
		1308	ev_idle_init (&iw, gcb);
		1309	ev_idle_start (&iw);
491		1310
492	ev_loop (0);	1311	ev_loop (0);
493		1312
494	return 0;	1313	return 0;
495	}	1314	}

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