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Comparing libev/ev.c (file contents):
Revision 1.3 by root, Tue Oct 30 21:45:00 2007 UTC vs.
Revision 1.47 by root, Sat Nov 3 11:44:44 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>
		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_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
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);
24	};
25
26	struct ev_watcher_list {	115	typedef struct ev_watcher_list *WL;
27	EV_WATCHER_LIST (ev_watcher_list);	116	typedef struct ev_watcher_time *WT;
28	};
29		117
		118	static ev_tstamp now_floor, now, diff; /* monotonic clock */
30	ev_tstamp ev_now;	119	ev_tstamp ev_now;
31	int ev_method;	120	int ev_method;
32		121
33	static int have_monotonic; /* runtime */	122	static int have_monotonic; /* runtime */
34		123
35	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
36	static void (*method_reify)(void);	125	static void (*method_modify)(int fd, int oev, int nev);
37	static void (*method_poll)(ev_tstamp timeout);	126	static void (*method_poll)(ev_tstamp timeout);
		127
		128	/*****************************************************************************/
38		129
39	ev_tstamp	130	ev_tstamp
40	ev_time (void)	131	ev_time (void)
41	{	132	{
42	#if HAVE_REALTIME	133	#if EV_USE_REALTIME
43	struct timespec ts;	134	struct timespec ts;
44	clock_gettime (CLOCK_REALTIME, &ts);	135	clock_gettime (CLOCK_REALTIME, &ts);
45	return ts.tv_sec + ts.tv_nsec * 1e-9;	136	return ts.tv_sec + ts.tv_nsec * 1e-9;
46	#else	137	#else
47	struct timeval tv;	138	struct timeval tv;
…		…
51	}	142	}
52		143
53	static ev_tstamp	144	static ev_tstamp
54	get_clock (void)	145	get_clock (void)
55	{	146	{
56	#if HAVE_MONOTONIC	147	#if EV_USE_MONOTONIC
57	if (have_monotonic)	148	if (expect_true (have_monotonic))
58	{	149	{
59	struct timespec ts;	150	struct timespec ts;
60	clock_gettime (CLOCK_MONOTONIC, &ts);	151	clock_gettime (CLOCK_MONOTONIC, &ts);
61	return ts.tv_sec + ts.tv_nsec * 1e-9;	152	return ts.tv_sec + ts.tv_nsec * 1e-9;
62	}	153	}
63	#endif	154	#endif
64		155
65	return ev_time ();	156	return ev_time ();
66	}	157	}
67		158
		159	#define array_roundsize(base,n) ((n) | 4 & ~3)
		160
68	#define array_needsize(base,cur,cnt,init) \	161	#define array_needsize(base,cur,cnt,init) \
69	if ((cnt) > cur) \	162	if (expect_false ((cnt) > cur)) \
70	{ \	163	{ \
71	int newcnt = cur ? cur << 1 : 16; \	164	int newcnt = cur; \
72	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	\
73	base = realloc (base, sizeof (*base) * (newcnt)); \	171	base = realloc (base, sizeof (*base) * (newcnt)); \
74	init (base + cur, newcnt - cur); \	172	init (base + cur, newcnt - cur); \
75	cur = newcnt; \	173	cur = newcnt; \
76	}	174	}
77		175
		176	/*****************************************************************************/
		177
78	typedef struct	178	typedef struct
79	{	179	{
80	struct ev_io *head;	180	struct ev_io *head;
81	unsigned char wev, rev; /* want, received event set */	181	unsigned char events;
		182	unsigned char reify;
82	} ANFD;	183	} ANFD;
83		184
84	static ANFD *anfds;	185	static ANFD *anfds;
85	static int anfdmax;	186	static int anfdmax;
86		187
		188	static void
		189	anfds_init (ANFD *base, int count)
		190	{
		191	while (count--)
		192	{
		193	base->head = 0;
		194	base->events = EV_NONE;
		195	base->reify = 0;
		196
		197	++base;
		198	}
		199	}
		200
		201	typedef struct
		202	{
		203	W w;
		204	int events;
		205	} ANPENDING;
		206
		207	static ANPENDING *pendings [NUMPRI];
		208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
		209
		210	static void
		211	event (W w, int events)
		212	{
		213	if (w->pending)
		214	{
		215	pendings [ABSPRI (w)][w->pending - 1].events |= events;
		216	return;
		217	}
		218
		219	w->pending = ++pendingcnt [ABSPRI (w)];
		220	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );
		221	pendings [ABSPRI (w)][w->pending - 1].w = w;
		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);
		232	}
		233
		234	static void
		235	fd_event (int fd, int events)
		236	{
		237	ANFD *anfd = anfds + fd;
		238	struct ev_io *w;
		239
		240	for (w = anfd->head; w; w = w->next)
		241	{
		242	int ev = w->events & events;
		243
		244	if (ev)
		245	event ((W)w, ev);
		246	}
		247	}
		248
		249	/*****************************************************************************/
		250
87	static int *fdchanges;	251	static int *fdchanges;
88	static int fdchangemax, fdchangecnt;	252	static int fdchangemax, fdchangecnt;
89		253
90	static void	254	static void
91	anfds_init (ANFD *base, int count)	255	fd_reify (void)
92	{	256	{
93	while (count--)	257	int i;
94	{	258
95	base->head = 0;	259	for (i = 0; i < fdchangecnt; ++i)
96	base->wev = base->rev = EV_NONE;
97	++base;
98	}	260	{
99	}	261	int fd = fdchanges [i];
100
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
111	event (struct ev_watcher *w, int events)
112	{
113	w->pending = ++pendingcnt;
114	array_needsize (pendings, pendingmax, pendingcnt, );
115	pendings [pendingcnt - 1].w = w;
116	pendings [pendingcnt - 1].events = events;
117	}
118
119	static void
120	fd_event (int fd, int events)
121	{
122	ANFD *anfd = anfds + fd;	262	ANFD *anfd = anfds + fd;
		263	struct ev_io *w;
		264
		265	int events = 0;
		266
		267	for (w = anfd->head; w; w = 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	{
123	struct ev_io *w;	298	struct ev_io *w;
124		299
125	for (w = anfd->head; w; w = w->next)	300	printf ("killing fd %d\n", fd);//D
		301	while ((w = anfds [fd].head))
		302	{
		303	ev_io_stop (w);
		304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);
		305	}
		306	}
		307
		308	/* called on EBADF to verify fds */
		309	static void
		310	fd_ebadf (void)
		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 (fd);
		318	}
		319
		320	/* called on ENOMEM in select/poll to kill some fds and retry */
		321	static void
		322	fd_enomem (void)
		323	{
		324	int fd = anfdmax;
		325
		326	while (fd--)
		327	if (anfds [fd].events)
126	{	328	{
127	int ev = w->events & events;	329	close (fd);
128		330	fd_kill (fd);
129	if (ev)	331	return;
130	event ((struct ev_watcher *)w, ev);
131	}	332	}
132	}	333	}
		334
		335	/*****************************************************************************/
133		336
134	static struct ev_timer **timers;	337	static struct ev_timer **timers;
135	static int timermax, timercnt;	338	static int timermax, timercnt;
136		339
		340	static struct ev_periodic **periodics;
		341	static int periodicmax, periodiccnt;
		342
137	static void	343	static void
138	upheap (int k)	344	upheap (WT *timers, int k)
139	{	345	{
140	struct ev_timer *w = timers [k];	346	WT w = timers [k];
141		347
142	while (k && timers [k >> 1]->at > w->at)	348	while (k && timers [k >> 1]->at > w->at)
143	{	349	{
144	timers [k] = timers [k >> 1];	350	timers [k] = timers [k >> 1];
145	timers [k]->active = k + 1;	351	timers [k]->active = k + 1;
…		…
150	timers [k]->active = k + 1;	356	timers [k]->active = k + 1;
151		357
152	}	358	}
153		359
154	static void	360	static void
155	downheap (int k)	361	downheap (WT *timers, int N, int k)
156	{	362	{
157	struct ev_timer *w = timers [k];	363	WT w = timers [k];
158		364
159	while (k < (timercnt >> 1))	365	while (k < (N >> 1))
160	{	366	{
161	int j = k << 1;	367	int j = k << 1;
162		368
163	if (j + 1 < timercnt && timers [j]->at > timers [j + 1]->at)	369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
164	++j;	370	++j;
165		371
166	if (w->at <= timers [j]->at)	372	if (w->at <= timers [j]->at)
167	break;	373	break;
168		374
…		…
173		379
174	timers [k] = w;	380	timers [k] = w;
175	timers [k]->active = k + 1;	381	timers [k]->active = k + 1;
176	}	382	}
177		383
178	static struct ev_signal **signals;	384	/*****************************************************************************/
		385
		386	typedef struct
		387	{
		388	struct ev_signal *head;
		389	sig_atomic_t volatile gotsig;
		390	} ANSIG;
		391
		392	static ANSIG *signals;
179	static int signalmax, signalcnt;	393	static int signalmax;
180		394
		395	static int sigpipe [2];
		396	static sig_atomic_t volatile gotsig;
		397	static struct ev_io sigev;
		398
181	static void	399	static void
182	signals_init (struct ev_signal **base, int count)	400	signals_init (ANSIG *base, int count)
183	{	401	{
184	while (count--)	402	while (count--)
185	*base++ = 0;	403	{
186	}	404	base->head = 0;
		405	base->gotsig = 0;
187		406
		407	++base;
		408	}
		409	}
		410
		411	static void
		412	sighandler (int signum)
		413	{
		414	signals [signum - 1].gotsig = 1;
		415
		416	if (!gotsig)
		417	{
		418	gotsig = 1;
		419	write (sigpipe [1], &signum, 1);
		420	}
		421	}
		422
		423	static void
		424	sigcb (struct ev_io *iow, int revents)
		425	{
		426	struct ev_signal *w;
		427	int signum;
		428
		429	read (sigpipe [0], &revents, 1);
		430	gotsig = 0;
		431
		432	for (signum = signalmax; signum--; )
		433	if (signals [signum].gotsig)
		434	{
		435	signals [signum].gotsig = 0;
		436
		437	for (w = signals [signum].head; w; w = w->next)
		438	event ((W)w, EV_SIGNAL);
		439	}
		440	}
		441
		442	static void
		443	siginit (void)
		444	{
		445	#ifndef WIN32
		446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
		447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
		448
		449	/* rather than sort out wether we really need nb, set it */
		450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
		451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		452	#endif
		453
		454	ev_io_set (&sigev, sigpipe [0], EV_READ);
		455	ev_io_start (&sigev);
		456	}
		457
		458	/*****************************************************************************/
		459
		460	static struct ev_idle **idles;
		461	static int idlemax, idlecnt;
		462
		463	static struct ev_prepare **prepares;
		464	static int preparemax, preparecnt;
		465
		466	static struct ev_check **checks;
		467	static int checkmax, checkcnt;
		468
		469	/*****************************************************************************/
		470
		471	static struct ev_child *childs [PID_HASHSIZE];
		472	static struct ev_signal childev;
		473
		474	#ifndef WIN32
		475
		476	#ifndef WCONTINUED
		477	# define WCONTINUED 0
		478	#endif
		479
		480	static void
		481	child_reap (struct ev_signal *sw, int chain, int pid, int status)
		482	{
		483	struct ev_child *w;
		484
		485	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)
		486	if (w->pid == pid || !w->pid)
		487	{
		488	w->priority = sw->priority; /* need to do it *now* */
		489	w->rpid = pid;
		490	w->rstatus = status;
		491	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
		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	printf ("chld %x\n", revents);//D
		502	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
		503	{
		504	/* make sure we are called again until all childs have been reaped */
		505	event ((W)sw, EV_SIGNAL);
		506
		507	child_reap (sw, pid, pid, status);
		508	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		509	}
		510	}
		511
		512	#endif
		513
		514	/*****************************************************************************/
		515
		516	#if EV_USE_KQUEUE
		517	# include "ev_kqueue.c"
		518	#endif
188	#if HAVE_EPOLL	519	#if EV_USE_EPOLL
189	# include "ev_epoll.c"	520	# include "ev_epoll.c"
190	#endif	521	#endif
		522	#if EV_USE_POLL
		523	# include "ev_poll.c"
		524	#endif
191	#if HAVE_SELECT	525	#if EV_USE_SELECT
192	# include "ev_select.c"	526	# include "ev_select.c"
193	#endif	527	#endif
194		528
		529	int
		530	ev_version_major (void)
		531	{
		532	return EV_VERSION_MAJOR;
		533	}
		534
		535	int
		536	ev_version_minor (void)
		537	{
		538	return EV_VERSION_MINOR;
		539	}
		540
		541	/* return true if we are running with elevated privileges and ignore env variables */
		542	static int
		543	enable_secure ()
		544	{
		545	return getuid () != geteuid ()
		546	|| getgid () != getegid ();
		547	}
		548
195	int ev_init (int flags)	549	int ev_init (int methods)
196	{	550	{
		551	if (!ev_method)
		552	{
197	#if HAVE_MONOTONIC	553	#if EV_USE_MONOTONIC
198	{	554	{
199	struct timespec ts;	555	struct timespec ts;
200	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	556	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
201	have_monotonic = 1;	557	have_monotonic = 1;
202	}	558	}
203	#endif	559	#endif
204		560
205	ev_now = ev_time ();	561	ev_now = ev_time ();
		562	now = get_clock ();
		563	now_floor = now;
		564	diff = ev_now - now;
206		565
		566	if (pipe (sigpipe))
		567	return 0;
		568
		569	if (methods == EVMETHOD_AUTO)
		570	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		571	methods = atoi (getenv ("LIBEV_METHODS"));
		572	else
		573	methods = EVMETHOD_ANY;
		574
		575	ev_method = 0;
		576	#if EV_USE_KQUEUE
		577	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);
		578	#endif
207	#if HAVE_EPOLL	579	#if EV_USE_EPOLL
208	if (epoll_init (flags))	580	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);
209	return ev_method;
210	#endif	581	#endif
		582	#if EV_USE_POLL
		583	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);
		584	#endif
211	#if HAVE_SELECT	585	#if EV_USE_SELECT
212	if (select_init (flags))	586	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);
213	return ev_method;
214	#endif	587	#endif
215		588
216	ev_method = EVMETHOD_NONE;	589	if (ev_method)
		590	{
		591	ev_watcher_init (&sigev, sigcb);
		592	ev_set_priority (&sigev, EV_MAXPRI);
		593	siginit ();
		594
		595	#ifndef WIN32
		596	ev_signal_init (&childev, childcb, SIGCHLD);
		597	ev_set_priority (&childev, EV_MAXPRI);
		598	ev_signal_start (&childev);
		599	#endif
		600	}
		601	}
		602
217	return ev_method;	603	return ev_method;
218	}	604	}
219		605
220	void ev_prefork (void)	606	/*****************************************************************************/
221	{
222	}
223		607
		608	void
		609	ev_fork_prepare (void)
		610	{
		611	/* nop */
		612	}
		613
		614	void
224	void ev_postfork_parent (void)	615	ev_fork_parent (void)
225	{	616	{
		617	/* nop */
226	}	618	}
227		619
		620	void
228	void ev_postfork_child (void)	621	ev_fork_child (void)
229	{	622	{
230	#if HAVE_EPOLL	623	#if EV_USE_EPOLL
		624	if (ev_method == EVMETHOD_EPOLL)
231	epoll_postfork_child ();	625	epoll_postfork_child ();
232	#endif	626	#endif
233	}
234		627
		628	ev_io_stop (&sigev);
		629	close (sigpipe [0]);
		630	close (sigpipe [1]);
		631	pipe (sigpipe);
		632	siginit ();
		633	}
		634
		635	/*****************************************************************************/
		636
235	static void	637	static void
236	call_pending ()	638	call_pending (void)
237	{	639	{
238	int i;	640	int pri;
239		641
240	for (i = 0; i < pendingcnt; ++i)	642	for (pri = NUMPRI; pri--; )
		643	while (pendingcnt [pri])
241	{	644	{
242	ANPENDING *p = pendings + i;	645	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
243		646
244	if (p->w)	647	if (p->w)
245	{	648	{
246	p->w->pending = 0;	649	p->w->pending = 0;
247	p->w->cb (p->w, p->events);	650	p->w->cb (p->w, p->events);
248	}	651	}
249	}	652	}
250
251	pendingcnt = 0;
252	}	653	}
253		654
254	static void	655	static void
255	timer_reify (void)	656	timers_reify (void)
256	{	657	{
257	while (timercnt && timers [0]->at <= ev_now)	658	while (timercnt && timers [0]->at <= now)
258	{	659	{
259	struct ev_timer *w = timers [0];	660	struct ev_timer *w = timers [0];
260		661
261	/* first reschedule timer */	662	/* first reschedule or stop timer */
262	if (w->repeat)	663	if (w->repeat)
263	{	664	{
264	if (w->is_abs)	665	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
265	w->at += ceil ((ev_now - w->at) / w->repeat + 1.) * w->repeat;
266	else
267	w->at = ev_now + w->repeat;	666	w->at = now + w->repeat;
268		667	downheap ((WT *)timers, timercnt, 0);
269	downheap (0);
270	}	668	}
271	else	669	else
272	evtimer_stop (w); /* nonrepeating: stop timer */	670	ev_timer_stop (w); /* nonrepeating: stop timer */
273		671
274	event ((struct ev_watcher *)w, EV_TIMEOUT);	672	event ((W)w, EV_TIMEOUT);
		673	}
		674	}
		675
		676	static void
		677	periodics_reify (void)
		678	{
		679	while (periodiccnt && periodics [0]->at <= ev_now)
		680	{
		681	struct ev_periodic *w = periodics [0];
		682
		683	/* first reschedule or stop timer */
		684	if (w->interval)
		685	{
		686	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;
		687	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));
		688	downheap ((WT *)periodics, periodiccnt, 0);
		689	}
		690	else
		691	ev_periodic_stop (w); /* nonrepeating: stop timer */
		692
		693	event ((W)w, EV_PERIODIC);
		694	}
		695	}
		696
		697	static void
		698	periodics_reschedule (ev_tstamp diff)
		699	{
		700	int i;
		701
		702	/* adjust periodics after time jump */
		703	for (i = 0; i < periodiccnt; ++i)
		704	{
		705	struct ev_periodic *w = periodics [i];
		706
		707	if (w->interval)
		708	{
		709	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;
		710
		711	if (fabs (diff) >= 1e-4)
		712	{
		713	ev_periodic_stop (w);
		714	ev_periodic_start (w);
		715
		716	i = 0; /* restart loop, inefficient, but time jumps should be rare */
		717	}
		718	}
		719	}
		720	}
		721
		722	static int
		723	time_update_monotonic (void)
		724	{
		725	now = get_clock ();
		726
		727	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))
		728	{
		729	ev_now = now + diff;
		730	return 0;
		731	}
		732	else
		733	{
		734	now_floor = now;
		735	ev_now = ev_time ();
		736	return 1;
		737	}
		738	}
		739
		740	static void
		741	time_update (void)
		742	{
		743	int i;
		744
		745	#if EV_USE_MONOTONIC
		746	if (expect_true (have_monotonic))
		747	{
		748	if (time_update_monotonic ())
		749	{
		750	ev_tstamp odiff = diff;
		751
		752	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		753	{
		754	diff = ev_now - now;
		755
		756	if (fabs (odiff - diff) < MIN_TIMEJUMP)
		757	return; /* all is well */
		758
		759	ev_now = ev_time ();
		760	now = get_clock ();
		761	now_floor = now;
		762	}
		763
		764	periodics_reschedule (diff - odiff);
		765	/* no timer adjustment, as the monotonic clock doesn't jump */
		766	}
		767	}
		768	else
		769	#endif
		770	{
		771	ev_now = ev_time ();
		772
		773	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
		774	{
		775	periodics_reschedule (ev_now - now);
		776
		777	/* adjust timers. this is easy, as the offset is the same for all */
		778	for (i = 0; i < timercnt; ++i)
		779	timers [i]->at += diff;
		780	}
		781
		782	now = ev_now;
275	}	783	}
276	}	784	}
277		785
278	int ev_loop_done;	786	int ev_loop_done;
279		787
280	int ev_loop (int flags)	788	void ev_loop (int flags)
281	{	789	{
282	double block;	790	double block;
283	ev_loop_done = flags & EVLOOP_ONESHOT;	791	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
284		792
285	do	793	do
286	{	794	{
		795	/* queue check watchers (and execute them) */
		796	if (expect_false (preparecnt))
		797	{
		798	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
		799	call_pending ();
		800	}
		801
287	/* update fd-related kernel structures */	802	/* update fd-related kernel structures */
288	method_reify (); fdchangecnt = 0;	803	fd_reify ();
289		804
290	/* calculate blocking time */	805	/* calculate blocking time */
		806
		807	/* we only need this for !monotonic clockor timers, but as we basically
		808	always have timers, we just calculate it always */
		809	#if EV_USE_MONOTONIC
		810	if (expect_true (have_monotonic))
		811	time_update_monotonic ();
		812	else
		813	#endif
		814	{
291	ev_now = ev_time ();	815	ev_now = ev_time ();
		816	now = ev_now;
		817	}
292		818
293	if (flags & EVLOOP_NONBLOCK)	819	if (flags & EVLOOP_NONBLOCK || idlecnt)
294	block = 0.;	820	block = 0.;
295	else if (!timercnt)
296	block = MAX_BLOCKTIME;
297	else	821	else
298	{	822	{
		823	block = MAX_BLOCKTIME;
		824
		825	if (timercnt)
		826	{
299	block = timers [0]->at - ev_now + method_fudge;	827	ev_tstamp to = timers [0]->at - now + method_fudge;
		828	if (block > to) block = to;
		829	}
		830
		831	if (periodiccnt)
		832	{
		833	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;
		834	if (block > to) block = to;
		835	}
		836
300	if (block < 0.) block = 0.;	837	if (block < 0.) block = 0.;
301	else if (block > MAX_BLOCKTIME) block = MAX_BLOCKTIME;
302	}	838	}
303		839
304	method_poll (block);	840	method_poll (block);
305		841
		842	/* update ev_now, do magic */
		843	time_update ();
		844
306	/* put pending timers into pendign queue and reschedule them */	845	/* queue pending timers and reschedule them */
307	timer_reify ();	846	timers_reify (); /* relative timers called last */
		847	periodics_reify (); /* absolute timers called first */
308		848
309	ev_now = ev_time ();	849	/* queue idle watchers unless io or timers are pending */
		850	if (!pendingcnt)
		851	queue_events ((W *)idles, idlecnt, EV_IDLE);
		852
		853	/* queue check watchers, to be executed first */
		854	if (checkcnt)
		855	queue_events ((W *)checks, checkcnt, EV_CHECK);
		856
310	call_pending ();	857	call_pending ();
311	}	858	}
312	while (!ev_loop_done);	859	while (!ev_loop_done);
313	}
314		860
		861	if (ev_loop_done != 2)
		862	ev_loop_done = 0;
		863	}
		864
		865	/*****************************************************************************/
		866
315	static void	867	static void
316	wlist_add (struct ev_watcher_list **head, struct ev_watcher_list *elem)	868	wlist_add (WL *head, WL elem)
317	{	869	{
318	elem->next = *head;	870	elem->next = *head;
319	*head = elem;	871	*head = elem;
320	}	872	}
321		873
322	static void	874	static void
323	wlist_del (struct ev_watcher_list **head, struct ev_watcher_list *elem)	875	wlist_del (WL *head, WL elem)
324	{	876	{
325	while (*head)	877	while (*head)
326	{	878	{
327	if (*head == elem)	879	if (*head == elem)
328	{	880	{
…		…
333	head = &(*head)->next;	885	head = &(*head)->next;
334	}	886	}
335	}	887	}
336		888
337	static void	889	static void
338	ev_start (struct ev_watcher *w, int active)	890	ev_clear_pending (W w)
339	{	891	{
		892	if (w->pending)
		893	{
		894	pendings [ABSPRI (w)][w->pending - 1].w = 0;
340	w->pending = 0;	895	w->pending = 0;
		896	}
		897	}
		898
		899	static void
		900	ev_start (W w, int active)
		901	{
		902	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		903	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		904
341	w->active = active;	905	w->active = active;
342	}	906	}
343		907
344	static void	908	static void
345	ev_stop (struct ev_watcher *w)	909	ev_stop (W w)
346	{	910	{
347	if (w->pending)
348	pendings [w->pending - 1].w = 0;
349
350	w->active = 0;	911	w->active = 0;
351	/* nop */
352	}	912	}
353		913
		914	/*****************************************************************************/
		915
354	void	916	void
355	evio_start (struct ev_io *w)	917	ev_io_start (struct ev_io *w)
356	{	918	{
		919	int fd = w->fd;
		920
357	if (ev_is_active (w))	921	if (ev_is_active (w))
358	return;	922	return;
359		923
360	int fd = w->fd;	924	assert (("ev_io_start called with negative fd", fd >= 0));
361		925
362	ev_start ((struct ev_watcher *)w, 1);	926	ev_start ((W)w, 1);
363	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	927	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
364	wlist_add ((struct ev_watcher_list **)&anfds[fd].head, (struct ev_watcher_list *)w);	928	wlist_add ((WL *)&anfds[fd].head, (WL)w);
365		929
366	++fdchangecnt;	930	fd_change (fd);
367	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
368	fdchanges [fdchangecnt - 1] = fd;
369	}	931	}
370		932
371	void	933	void
372	evio_stop (struct ev_io *w)	934	ev_io_stop (struct ev_io *w)
373	{	935	{
		936	ev_clear_pending ((W)w);
374	if (!ev_is_active (w))	937	if (!ev_is_active (w))
375	return;	938	return;
376		939
377	wlist_del ((struct ev_watcher_list **)&anfds[w->fd].head, (struct ev_watcher_list *)w);	940	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
378	ev_stop ((struct ev_watcher *)w);	941	ev_stop ((W)w);
379		942
380	++fdchangecnt;	943	fd_change (w->fd);
381	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
382	fdchanges [fdchangecnt - 1] = w->fd;
383	}	944	}
384		945
385	void	946	void
386	evtimer_start (struct ev_timer *w)	947	ev_timer_start (struct ev_timer *w)
387	{	948	{
388	if (ev_is_active (w))	949	if (ev_is_active (w))
389	return;	950	return;
390		951
391	if (w->is_abs)
392	{
393	/* this formula differs from the one in timer_reify becuse we do not round up */
394	if (w->repeat)
395	w->at += ceil ((ev_now - w->at) / w->repeat) * w->repeat;
396	}
397	else
398	w->at += ev_now;	952	w->at += now;
399		953
400	ev_start ((struct ev_watcher *)w, ++timercnt);	954	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
		955
		956	ev_start ((W)w, ++timercnt);
401	array_needsize (timers, timermax, timercnt, );	957	array_needsize (timers, timermax, timercnt, );
402	timers [timercnt - 1] = w;	958	timers [timercnt - 1] = w;
403	upheap (timercnt - 1);	959	upheap ((WT *)timers, timercnt - 1);
404	}	960	}
405		961
406	void	962	void
407	evtimer_stop (struct ev_timer *w)	963	ev_timer_stop (struct ev_timer *w)
408	{	964	{
		965	ev_clear_pending ((W)w);
409	if (!ev_is_active (w))	966	if (!ev_is_active (w))
410	return;	967	return;
411		968
412	if (w->active < timercnt--)	969	if (w->active < timercnt--)
413	{	970	{
414	timers [w->active - 1] = timers [timercnt];	971	timers [w->active - 1] = timers [timercnt];
415	downheap (w->active - 1);	972	downheap ((WT *)timers, timercnt, w->active - 1);
416	}	973	}
417		974
418	ev_stop ((struct ev_watcher *)w);	975	w->at = w->repeat;
419	}
420		976
		977	ev_stop ((W)w);
		978	}
		979
421	void	980	void
422	evsignal_start (struct ev_signal *w)	981	ev_timer_again (struct ev_timer *w)
423	{	982	{
424	if (ev_is_active (w))	983	if (ev_is_active (w))
425	return;	984	{
		985	if (w->repeat)
		986	{
		987	w->at = now + w->repeat;
		988	downheap ((WT *)timers, timercnt, w->active - 1);
		989	}
		990	else
		991	ev_timer_stop (w);
		992	}
		993	else if (w->repeat)
		994	ev_timer_start (w);
		995	}
426		996
427	ev_start ((struct ev_watcher *)w, 1);	997	void
		998	ev_periodic_start (struct ev_periodic *w)
		999	{
		1000	if (ev_is_active (w))
		1001	return;
		1002
		1003	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
		1004
		1005	/* this formula differs from the one in periodic_reify because we do not always round up */
		1006	if (w->interval)
		1007	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;
		1008
		1009	ev_start ((W)w, ++periodiccnt);
		1010	array_needsize (periodics, periodicmax, periodiccnt, );
		1011	periodics [periodiccnt - 1] = w;
		1012	upheap ((WT *)periodics, periodiccnt - 1);
		1013	}
		1014
		1015	void
		1016	ev_periodic_stop (struct ev_periodic *w)
		1017	{
		1018	ev_clear_pending ((W)w);
		1019	if (!ev_is_active (w))
		1020	return;
		1021
		1022	if (w->active < periodiccnt--)
		1023	{
		1024	periodics [w->active - 1] = periodics [periodiccnt];
		1025	downheap ((WT *)periodics, periodiccnt, w->active - 1);
		1026	}
		1027
		1028	ev_stop ((W)w);
		1029	}
		1030
		1031	#ifndef SA_RESTART
		1032	# define SA_RESTART 0
		1033	#endif
		1034
		1035	void
		1036	ev_signal_start (struct ev_signal *w)
		1037	{
		1038	if (ev_is_active (w))
		1039	return;
		1040
		1041	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1042
		1043	ev_start ((W)w, 1);
428	array_needsize (signals, signalmax, w->signum, signals_init);	1044	array_needsize (signals, signalmax, w->signum, signals_init);
429	wlist_add ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w);	1045	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
430	}
431		1046
		1047	if (!w->next)
		1048	{
		1049	struct sigaction sa;
		1050	sa.sa_handler = sighandler;
		1051	sigfillset (&sa.sa_mask);
		1052	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
		1053	sigaction (w->signum, &sa, 0);
		1054	}
		1055	}
		1056
432	void	1057	void
433	evsignal_stop (struct ev_signal *w)	1058	ev_signal_stop (struct ev_signal *w)
434	{	1059	{
		1060	ev_clear_pending ((W)w);
435	if (!ev_is_active (w))	1061	if (!ev_is_active (w))
436	return;	1062	return;
437		1063
438	wlist_del ((struct ev_watcher_list **)&signals [w->signum - 1], (struct ev_watcher_list *)w);	1064	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
		1065	ev_stop ((W)w);
		1066
		1067	if (!signals [w->signum - 1].head)
		1068	signal (w->signum, SIG_DFL);
		1069	}
		1070
		1071	void
		1072	ev_idle_start (struct ev_idle *w)
		1073	{
		1074	if (ev_is_active (w))
		1075	return;
		1076
		1077	ev_start ((W)w, ++idlecnt);
		1078	array_needsize (idles, idlemax, idlecnt, );
		1079	idles [idlecnt - 1] = w;
		1080	}
		1081
		1082	void
		1083	ev_idle_stop (struct ev_idle *w)
		1084	{
		1085	ev_clear_pending ((W)w);
		1086	if (ev_is_active (w))
		1087	return;
		1088
		1089	idles [w->active - 1] = idles [--idlecnt];
		1090	ev_stop ((W)w);
		1091	}
		1092
		1093	void
		1094	ev_prepare_start (struct ev_prepare *w)
		1095	{
		1096	if (ev_is_active (w))
		1097	return;
		1098
		1099	ev_start ((W)w, ++preparecnt);
		1100	array_needsize (prepares, preparemax, preparecnt, );
		1101	prepares [preparecnt - 1] = w;
		1102	}
		1103
		1104	void
		1105	ev_prepare_stop (struct ev_prepare *w)
		1106	{
		1107	ev_clear_pending ((W)w);
		1108	if (ev_is_active (w))
		1109	return;
		1110
		1111	prepares [w->active - 1] = prepares [--preparecnt];
		1112	ev_stop ((W)w);
		1113	}
		1114
		1115	void
		1116	ev_check_start (struct ev_check *w)
		1117	{
		1118	if (ev_is_active (w))
		1119	return;
		1120
		1121	ev_start ((W)w, ++checkcnt);
		1122	array_needsize (checks, checkmax, checkcnt, );
		1123	checks [checkcnt - 1] = w;
		1124	}
		1125
		1126	void
439	ev_stop ((struct ev_watcher *)w);	1127	ev_check_stop (struct ev_check *w)
		1128	{
		1129	ev_clear_pending ((W)w);
		1130	if (ev_is_active (w))
		1131	return;
		1132
		1133	checks [w->active - 1] = checks [--checkcnt];
		1134	ev_stop ((W)w);
		1135	}
		1136
		1137	void
		1138	ev_child_start (struct ev_child *w)
		1139	{
		1140	if (ev_is_active (w))
		1141	return;
		1142
		1143	ev_start ((W)w, 1);
		1144	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1145	}
		1146
		1147	void
		1148	ev_child_stop (struct ev_child *w)
		1149	{
		1150	ev_clear_pending ((W)w);
		1151	if (ev_is_active (w))
		1152	return;
		1153
		1154	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
		1155	ev_stop ((W)w);
440	}	1156	}
441		1157
442	/*****************************************************************************/	1158	/*****************************************************************************/
		1159
		1160	struct ev_once
		1161	{
		1162	struct ev_io io;
		1163	struct ev_timer to;
		1164	void (*cb)(int revents, void *arg);
		1165	void *arg;
		1166	};
		1167
		1168	static void
		1169	once_cb (struct ev_once *once, int revents)
		1170	{
		1171	void (*cb)(int revents, void *arg) = once->cb;
		1172	void *arg = once->arg;
		1173
		1174	ev_io_stop (&once->io);
		1175	ev_timer_stop (&once->to);
		1176	free (once);
		1177
		1178	cb (revents, arg);
		1179	}
		1180
		1181	static void
		1182	once_cb_io (struct ev_io *w, int revents)
		1183	{
		1184	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
		1185	}
		1186
		1187	static void
		1188	once_cb_to (struct ev_timer *w, int revents)
		1189	{
		1190	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
		1191	}
		1192
		1193	void
		1194	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
		1195	{
		1196	struct ev_once *once = malloc (sizeof (struct ev_once));
		1197
		1198	if (!once)
		1199	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
		1200	else
		1201	{
		1202	once->cb = cb;
		1203	once->arg = arg;
		1204
		1205	ev_watcher_init (&once->io, once_cb_io);
		1206	if (fd >= 0)
		1207	{
		1208	ev_io_set (&once->io, fd, events);
		1209	ev_io_start (&once->io);
		1210	}
		1211
		1212	ev_watcher_init (&once->to, once_cb_to);
		1213	if (timeout >= 0.)
		1214	{
		1215	ev_timer_set (&once->to, timeout, 0.);
		1216	ev_timer_start (&once->to);
		1217	}
		1218	}
		1219	}
		1220
		1221	/*****************************************************************************/
		1222
443	#if 1	1223	#if 0
		1224
		1225	struct ev_io wio;
444		1226
445	static void	1227	static void
446	sin_cb (struct ev_io *w, int revents)	1228	sin_cb (struct ev_io *w, int revents)
447	{	1229	{
448	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);	1230	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
449	}	1231	}
450		1232
451	static void	1233	static void
452	ocb (struct ev_timer *w, int revents)	1234	ocb (struct ev_timer *w, int revents)
453	{	1235	{
454	fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);	1236	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
		1237	ev_timer_stop (w);
		1238	ev_timer_start (w);
		1239	}
		1240
		1241	static void
		1242	scb (struct ev_signal *w, int revents)
		1243	{
		1244	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
		1245	ev_io_stop (&wio);
		1246	ev_io_start (&wio);
		1247	}
		1248
		1249	static void
		1250	gcb (struct ev_signal *w, int revents)
		1251	{
		1252	fprintf (stderr, "generic %x\n", revents);
		1253
455	}	1254	}
456		1255
457	int main (void)	1256	int main (void)
458	{	1257	{
459	struct ev_io sin;
460
461	ev_init (0);	1258	ev_init (0);
462		1259
463	evw_init (&sin, sin_cb, 55);
464	evio_set (&sin, 0, EV_READ);	1260	ev_io_init (&wio, sin_cb, 0, EV_READ);
465	evio_start (&sin);	1261	ev_io_start (&wio);
466		1262
467	struct ev_timer t[1000];	1263	struct ev_timer t[10000];
468		1264
		1265	#if 0
469	int i;	1266	int i;
470	for (i = 0; i < 1000; ++i)	1267	for (i = 0; i < 10000; ++i)
471	{	1268	{
472	struct ev_timer *w = t + i;	1269	struct ev_timer *w = t + i;
473	evw_init (w, ocb, i);	1270	ev_watcher_init (w, ocb, i);
474	evtimer_set_rel (w, drand48 (), 0);	1271	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
475	evtimer_start (w);	1272	ev_timer_start (w);
476	if (drand48 () < 0.5)	1273	if (drand48 () < 0.5)
477	evtimer_stop (w);	1274	ev_timer_stop (w);
478	}	1275	}
		1276	#endif
		1277
		1278	struct ev_timer t1;
		1279	ev_timer_init (&t1, ocb, 5, 10);
		1280	ev_timer_start (&t1);
		1281
		1282	struct ev_signal sig;
		1283	ev_signal_init (&sig, scb, SIGQUIT);
		1284	ev_signal_start (&sig);
		1285
		1286	struct ev_check cw;
		1287	ev_check_init (&cw, gcb);
		1288	ev_check_start (&cw);
		1289
		1290	struct ev_idle iw;
		1291	ev_idle_init (&iw, gcb);
		1292	ev_idle_start (&iw);
479		1293
480	ev_loop (0);	1294	ev_loop (0);
481		1295
482	return 0;	1296	return 0;
483	}	1297	}

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