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Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.71 by root, Tue Nov 6 13:17:55 2007 UTC

1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
…		…
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
30	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
31	#endif	55	#endif
32		56
33	#include <math.h>	57	#include <math.h>
34	#include <stdlib.h>	58	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	59	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	60	#include <stddef.h>
39		61
40	#include <stdio.h>	62	#include <stdio.h>
41		63
42	#include <assert.h>	64	#include <assert.h>
43	#include <errno.h>	65	#include <errno.h>
44	#include <sys/types.h>	66	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	67	#include <time.h>
48		68
		69	#ifndef PERL
		70	# include <signal.h>
		71	#endif
		72
		73	#ifndef WIN32
		74	# include <unistd.h>
		75	# include <sys/time.h>
		76	# include <sys/wait.h>
		77	#endif
		78	/**/
		79
49	#ifndef EV_USE_MONOTONIC	80	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	81	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	82	#endif
54		83
55	#ifndef EV_USE_SELECT	84	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	85	# define EV_USE_SELECT 1
57	#endif	86	#endif
58		87
		88	#ifndef EV_USE_POLL
		89	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		90	#endif
		91
59	#ifndef EV_USE_EPOLL	92	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	93	# define EV_USE_EPOLL 0
61	#endif	94	#endif
62		95
		96	#ifndef EV_USE_KQUEUE
		97	# define EV_USE_KQUEUE 0
		98	#endif
		99
		100	#ifndef EV_USE_WIN32
		101	# ifdef WIN32
		102	# define EV_USE_WIN32 0 /* it does not exist, use select */
		103	# undef EV_USE_SELECT
		104	# define EV_USE_SELECT 1
		105	# else
		106	# define EV_USE_WIN32 0
		107	# endif
		108	#endif
		109
		110	#ifndef EV_USE_REALTIME
		111	# define EV_USE_REALTIME 1
		112	#endif
		113
		114	/**/
		115
		116	#ifndef CLOCK_MONOTONIC
		117	# undef EV_USE_MONOTONIC
		118	# define EV_USE_MONOTONIC 0
		119	#endif
		120
63	#ifndef CLOCK_REALTIME	121	#ifndef CLOCK_REALTIME
		122	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	123	# define EV_USE_REALTIME 0
65	#endif	124	#endif
66	#ifndef EV_USE_REALTIME	125
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	126	/**/
68	#endif
69		127
70	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	128	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	129	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
72	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	130	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
73	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	131	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
74		132
75	#include "ev.h"	133	#include "ev.h"
		134
		135	#if __GNUC__ >= 3
		136	# define expect(expr,value) __builtin_expect ((expr),(value))
		137	# define inline inline
		138	#else
		139	# define expect(expr,value) (expr)
		140	# define inline static
		141	#endif
		142
		143	#define expect_false(expr) expect ((expr) != 0, 0)
		144	#define expect_true(expr) expect ((expr) != 0, 1)
		145
		146	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		147	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
76		148
77	typedef struct ev_watcher *W;	149	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	150	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	151	typedef struct ev_watcher_time *WT;
80		152
81	static ev_tstamp now, diff; /* monotonic clock */	153	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
82	ev_tstamp ev_now;
83	int ev_method;
84		154
85	static int have_monotonic; /* runtime */	155	#if WIN32
86		156	/* note: the comment below could not be substantiated, but what would I care */
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	157	/* MSDN says this is required to handle SIGFPE */
88	static void (*method_modify)(int fd, int oev, int nev);	158	volatile double SIGFPE_REQ = 0.0f;
89	static void (*method_poll)(ev_tstamp timeout);	159	#endif
90		160
91	/*****************************************************************************/	161	/*****************************************************************************/
92		162
93	ev_tstamp	163	static void (*syserr_cb)(const char *msg);
		164
		165	void ev_set_syserr_cb (void (*cb)(const char *msg))
		166	{
		167	syserr_cb = cb;
		168	}
		169
		170	static void
		171	syserr (const char *msg)
		172	{
		173	if (!msg)
		174	msg = "(libev) system error";
		175
		176	if (syserr_cb)
		177	syserr_cb (msg);
		178	else
		179	{
		180	perror (msg);
		181	abort ();
		182	}
		183	}
		184
		185	static void *(*alloc)(void *ptr, long size);
		186
		187	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		188	{
		189	alloc = cb;
		190	}
		191
		192	static void *
		193	ev_realloc (void *ptr, long size)
		194	{
		195	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		196
		197	if (!ptr && size)
		198	{
		199	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		200	abort ();
		201	}
		202
		203	return ptr;
		204	}
		205
		206	#define ev_malloc(size) ev_realloc (0, (size))
		207	#define ev_free(ptr) ev_realloc ((ptr), 0)
		208
		209	/*****************************************************************************/
		210
		211	typedef struct
		212	{
		213	WL head;
		214	unsigned char events;
		215	unsigned char reify;
		216	} ANFD;
		217
		218	typedef struct
		219	{
		220	W w;
		221	int events;
		222	} ANPENDING;
		223
		224	#if EV_MULTIPLICITY
		225
		226	struct ev_loop
		227	{
		228	# define VAR(name,decl) decl;
		229	# include "ev_vars.h"
		230	};
		231	# undef VAR
		232	# include "ev_wrap.h"
		233
		234	#else
		235
		236	# define VAR(name,decl) static decl;
		237	# include "ev_vars.h"
		238	# undef VAR
		239
		240	#endif
		241
		242	/*****************************************************************************/
		243
		244	inline ev_tstamp
94	ev_time (void)	245	ev_time (void)
95	{	246	{
96	#if EV_USE_REALTIME	247	#if EV_USE_REALTIME
97	struct timespec ts;	248	struct timespec ts;
98	clock_gettime (CLOCK_REALTIME, &ts);	249	clock_gettime (CLOCK_REALTIME, &ts);
…		…
102	gettimeofday (&tv, 0);	253	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	254	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	255	#endif
105	}	256	}
106		257
107	static ev_tstamp	258	inline ev_tstamp
108	get_clock (void)	259	get_clock (void)
109	{	260	{
110	#if EV_USE_MONOTONIC	261	#if EV_USE_MONOTONIC
111	if (have_monotonic)	262	if (expect_true (have_monotonic))
112	{	263	{
113	struct timespec ts;	264	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	265	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	266	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	267	}
117	#endif	268	#endif
118		269
119	return ev_time ();	270	return ev_time ();
120	}	271	}
121		272
		273	ev_tstamp
		274	ev_now (EV_P)
		275	{
		276	return rt_now;
		277	}
		278
122	#define array_roundsize(base,n) ((n) | 4 & ~3)	279	#define array_roundsize(base,n) ((n) | 4 & ~3)
123		280
124	#define array_needsize(base,cur,cnt,init) \	281	#define array_needsize(base,cur,cnt,init) \
125	if ((cnt) > cur) \	282	if (expect_false ((cnt) > cur)) \
126	{ \	283	{ \
127	int newcnt = cur; \	284	int newcnt = cur; \
128	do \	285	do \
129	{ \	286	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	287	newcnt = array_roundsize (base, newcnt << 1); \
131	} \	288	} \
132	while ((cnt) > newcnt); \	289	while ((cnt) > newcnt); \
133	\	290	\
134	base = realloc (base, sizeof (*base) * (newcnt)); \	291	base = ev_realloc (base, sizeof (*base) * (newcnt)); \
135	init (base + cur, newcnt - cur); \	292	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	293	cur = newcnt; \
137	}	294	}
		295
		296	#define array_slim(stem) \
		297	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		298	{ \
		299	stem ## max = array_roundsize (stem ## cnt >> 1); \
		300	base = ev_realloc (base, sizeof (*base) * (stem ## max)); \
		301	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		302	}
		303
		304	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		305	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		306	#define array_free_microshit(stem) \
		307	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		308
		309	#define array_free(stem, idx) \
		310	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		311
139	/*****************************************************************************/	312	/*****************************************************************************/
140
141	typedef struct
142	{
143	struct ev_io *head;
144	int events;
145	} ANFD;
146
147	static ANFD *anfds;
148	static int anfdmax;
149		313
150	static void	314	static void
151	anfds_init (ANFD *base, int count)	315	anfds_init (ANFD *base, int count)
152	{	316	{
153	while (count--)	317	while (count--)
154	{	318	{
155	base->head = 0;	319	base->head = 0;
156	base->events = EV_NONE;	320	base->events = EV_NONE;
		321	base->reify = 0;
		322
157	++base;	323	++base;
158	}	324	}
159	}	325	}
160		326
161	typedef struct
162	{
163	W w;
164	int events;
165	} ANPENDING;
166
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void	327	static void
171	event (W w, int events)	328	event (EV_P_ W w, int events)
172	{	329	{
		330	if (w->pending)
		331	{
		332	pendings [ABSPRI (w)][w->pending - 1].events |= events;
		333	return;
		334	}
		335
173	w->pending = ++pendingcnt;	336	w->pending = ++pendingcnt [ABSPRI (w)];
174	array_needsize (pendings, pendingmax, pendingcnt, );	337	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));
175	pendings [pendingcnt - 1].w = w;	338	pendings [ABSPRI (w)][w->pending - 1].w = w;
176	pendings [pendingcnt - 1].events = events;	339	pendings [ABSPRI (w)][w->pending - 1].events = events;
177	}	340	}
178		341
179	static void	342	static void
180	queue_events (W *events, int eventcnt, int type)	343	queue_events (EV_P_ W *events, int eventcnt, int type)
181	{	344	{
182	int i;	345	int i;
183		346
184	for (i = 0; i < eventcnt; ++i)	347	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);	348	event (EV_A_ events [i], type);
186	}	349	}
187		350
188	static void	351	static void
189	fd_event (int fd, int events)	352	fd_event (EV_P_ int fd, int events)
190	{	353	{
191	ANFD *anfd = anfds + fd;	354	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	355	struct ev_io *w;
193		356
194	for (w = anfd->head; w; w = w->next)	357	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
195	{	358	{
196	int ev = w->events & events;	359	int ev = w->events & events;
197		360
198	if (ev)	361	if (ev)
199	event ((W)w, ev);	362	event (EV_A_ (W)w, ev);
200	}	363	}
201	}	364	}
202		365
203	/*****************************************************************************/	366	/*****************************************************************************/
204		367
205	static int *fdchanges;
206	static int fdchangemax, fdchangecnt;
207
208	static void	368	static void
209	fd_reify (void)	369	fd_reify (EV_P)
210	{	370	{
211	int i;	371	int i;
212		372
213	for (i = 0; i < fdchangecnt; ++i)	373	for (i = 0; i < fdchangecnt; ++i)
214	{	374	{
…		…
216	ANFD *anfd = anfds + fd;	376	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	377	struct ev_io *w;
218		378
219	int events = 0;	379	int events = 0;
220		380
221	for (w = anfd->head; w; w = w->next)	381	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
222	events |= w->events;	382	events |= w->events;
223		383
224	anfd->events &= ~EV_REIFY;	384	anfd->reify = 0;
225		385
226	if (anfd->events != events)
227	{
228	method_modify (fd, anfd->events, events);	386	method_modify (EV_A_ fd, anfd->events, events);
229	anfd->events = events;	387	anfd->events = events;
230	}
231	}	388	}
232		389
233	fdchangecnt = 0;	390	fdchangecnt = 0;
234	}	391	}
235		392
236	static void	393	static void
237	fd_change (int fd)	394	fd_change (EV_P_ int fd)
238	{	395	{
239	if (anfds [fd].events & EV_REIFY || fdchangecnt < 0)	396	if (anfds [fd].reify)
240	return;	397	return;
241		398
242	anfds [fd].events |= EV_REIFY;	399	anfds [fd].reify = 1;
243		400
244	++fdchangecnt;	401	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	402	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));
246	fdchanges [fdchangecnt - 1] = fd;	403	fdchanges [fdchangecnt - 1] = fd;
247	}	404	}
248		405
		406	static void
		407	fd_kill (EV_P_ int fd)
		408	{
		409	struct ev_io *w;
		410
		411	while ((w = (struct ev_io *)anfds [fd].head))
		412	{
		413	ev_io_stop (EV_A_ w);
		414	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		415	}
		416	}
		417
		418	static int
		419	fd_valid (int fd)
		420	{
		421	#ifdef WIN32
		422	return !!win32_get_osfhandle (fd);
		423	#else
		424	return fcntl (fd, F_GETFD) != -1;
		425	#endif
		426	}
		427
249	/* called on EBADF to verify fds */	428	/* called on EBADF to verify fds */
250	static void	429	static void
251	fd_recheck (void)	430	fd_ebadf (EV_P)
252	{	431	{
253	int fd;	432	int fd;
254		433
255	for (fd = 0; fd < anfdmax; ++fd)	434	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	435	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	436	if (!fd_valid (fd) == -1 && errno == EBADF)
258	while (anfds [fd].head)	437	fd_kill (EV_A_ fd);
		438	}
		439
		440	/* called on ENOMEM in select/poll to kill some fds and retry */
		441	static void
		442	fd_enomem (EV_P)
		443	{
		444	int fd;
		445
		446	for (fd = anfdmax; fd--; )
		447	if (anfds [fd].events)
259	{	448	{
260	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT);	449	fd_kill (EV_A_ fd);
261	ev_io_stop (anfds [fd].head);	450	return;
262	}	451	}
		452	}
		453
		454	/* usually called after fork if method needs to re-arm all fds from scratch */
		455	static void
		456	fd_rearm_all (EV_P)
		457	{
		458	int fd;
		459
		460	/* this should be highly optimised to not do anything but set a flag */
		461	for (fd = 0; fd < anfdmax; ++fd)
		462	if (anfds [fd].events)
		463	{
		464	anfds [fd].events = 0;
		465	fd_change (EV_A_ fd);
		466	}
263	}	467	}
264		468
265	/*****************************************************************************/	469	/*****************************************************************************/
266		470
267	static struct ev_timer **timers;
268	static int timermax, timercnt;
269
270	static struct ev_periodic **periodics;
271	static int periodicmax, periodiccnt;
272
273	static void	471	static void
274	upheap (WT *timers, int k)	472	upheap (WT *heap, int k)
275	{	473	{
276	WT w = timers [k];	474	WT w = heap [k];
277		475
278	while (k && timers [k >> 1]->at > w->at)	476	while (k && heap [k >> 1]->at > w->at)
279	{	477	{
280	timers [k] = timers [k >> 1];	478	heap [k] = heap [k >> 1];
281	timers [k]->active = k + 1;	479	((W)heap [k])->active = k + 1;
282	k >>= 1;	480	k >>= 1;
283	}	481	}
284		482
285	timers [k] = w;	483	heap [k] = w;
286	timers [k]->active = k + 1;	484	((W)heap [k])->active = k + 1;
287		485
288	}	486	}
289		487
290	static void	488	static void
291	downheap (WT *timers, int N, int k)	489	downheap (WT *heap, int N, int k)
292	{	490	{
293	WT w = timers [k];	491	WT w = heap [k];
294		492
295	while (k < (N >> 1))	493	while (k < (N >> 1))
296	{	494	{
297	int j = k << 1;	495	int j = k << 1;
298		496
299	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	497	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
300	++j;	498	++j;
301		499
302	if (w->at <= timers [j]->at)	500	if (w->at <= heap [j]->at)
303	break;	501	break;
304		502
305	timers [k] = timers [j];	503	heap [k] = heap [j];
306	timers [k]->active = k + 1;	504	((W)heap [k])->active = k + 1;
307	k = j;	505	k = j;
308	}	506	}
309		507
310	timers [k] = w;	508	heap [k] = w;
311	timers [k]->active = k + 1;	509	((W)heap [k])->active = k + 1;
312	}	510	}
313		511
314	/*****************************************************************************/	512	/*****************************************************************************/
315		513
316	typedef struct	514	typedef struct
317	{	515	{
318	struct ev_signal *head;	516	WL head;
319	sig_atomic_t gotsig;	517	sig_atomic_t volatile gotsig;
320	} ANSIG;	518	} ANSIG;
321		519
322	static ANSIG *signals;	520	static ANSIG *signals;
323	static int signalmax;	521	static int signalmax;
324		522
325	static int sigpipe [2];	523	static int sigpipe [2];
326	static sig_atomic_t gotsig;	524	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;	525	static struct ev_io sigev;
328		526
329	static void	527	static void
330	signals_init (ANSIG *base, int count)	528	signals_init (ANSIG *base, int count)
331	{	529	{
332	while (count--)	530	while (count--)
333	{	531	{
334	base->head = 0;	532	base->head = 0;
335	base->gotsig = 0;	533	base->gotsig = 0;
		534
336	++base;	535	++base;
337	}	536	}
338	}	537	}
339		538
340	static void	539	static void
341	sighandler (int signum)	540	sighandler (int signum)
342	{	541	{
		542	#if WIN32
		543	signal (signum, sighandler);
		544	#endif
		545
343	signals [signum - 1].gotsig = 1;	546	signals [signum - 1].gotsig = 1;
344		547
345	if (!gotsig)	548	if (!gotsig)
346	{	549	{
		550	int old_errno = errno;
347	gotsig = 1;	551	gotsig = 1;
348	write (sigpipe [1], &gotsig, 1);	552	write (sigpipe [1], &signum, 1);
		553	errno = old_errno;
349	}	554	}
350	}	555	}
351		556
352	static void	557	static void
353	sigcb (struct ev_io *iow, int revents)	558	sigcb (EV_P_ struct ev_io *iow, int revents)
354	{	559	{
355	struct ev_signal *w;	560	WL w;
356	int sig;	561	int signum;
357		562
		563	read (sigpipe [0], &revents, 1);
358	gotsig = 0;	564	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		565
361	for (sig = signalmax; sig--; )	566	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	567	if (signals [signum].gotsig)
363	{	568	{
364	signals [sig].gotsig = 0;	569	signals [signum].gotsig = 0;
365		570
366	for (w = signals [sig].head; w; w = w->next)	571	for (w = signals [signum].head; w; w = w->next)
367	event ((W)w, EV_SIGNAL);	572	event (EV_A_ (W)w, EV_SIGNAL);
368	}	573	}
369	}	574	}
370		575
371	static void	576	static void
372	siginit (void)	577	siginit (EV_P)
373	{	578	{
		579	#ifndef WIN32
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	580	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	581	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376		582
377	/* rather than sort out wether we really need nb, set it */	583	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	584	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	585	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		586	#endif
380		587
381	ev_io_set (&sigev, sigpipe [0], EV_READ);	588	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);	589	ev_io_start (EV_A_ &sigev);
		590	ev_unref (EV_A); /* child watcher should not keep loop alive */
383	}	591	}
384		592
385	/*****************************************************************************/	593	/*****************************************************************************/
386		594
387	static struct ev_idle **idles;
388	static int idlemax, idlecnt;
389
390	static struct ev_prepare **prepares;
391	static int preparemax, preparecnt;
392
393	static struct ev_check **checks;
394	static int checkmax, checkcnt;
395
396	/*****************************************************************************/
397
398	static struct ev_child *childs [PID_HASHSIZE];	595	static struct ev_child *childs [PID_HASHSIZE];
		596
		597	#ifndef WIN32
		598
399	static struct ev_signal childev;	599	static struct ev_signal childev;
400		600
401	#ifndef WCONTINUED	601	#ifndef WCONTINUED
402	# define WCONTINUED 0	602	# define WCONTINUED 0
403	#endif	603	#endif
404		604
405	static void	605	static void
406	childcb (struct ev_signal *sw, int revents)	606	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
407	{	607	{
408	struct ev_child *w;	608	struct ev_child *w;
		609
		610	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		611	if (w->pid == pid || !w->pid)
		612	{
		613	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		614	w->rpid = pid;
		615	w->rstatus = status;
		616	event (EV_A_ (W)w, EV_CHILD);
		617	}
		618	}
		619
		620	static void
		621	childcb (EV_P_ struct ev_signal *sw, int revents)
		622	{
409	int pid, status;	623	int pid, status;
410		624
411	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	625	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	626	{
413	if (w->pid == pid || w->pid == -1)	627	/* make sure we are called again until all childs have been reaped */
414	{	628	event (EV_A_ (W)sw, EV_SIGNAL);
415	w->status = status;	629
416	event ((W)w, EV_CHILD);	630	child_reap (EV_A_ sw, pid, pid, status);
417	}	631	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		632	}
418	}	633	}
		634
		635	#endif
419		636
420	/*****************************************************************************/	637	/*****************************************************************************/
421		638
		639	#if EV_USE_KQUEUE
		640	# include "ev_kqueue.c"
		641	#endif
422	#if EV_USE_EPOLL	642	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	643	# include "ev_epoll.c"
424	#endif	644	#endif
		645	#if EV_USE_POLL
		646	# include "ev_poll.c"
		647	#endif
425	#if EV_USE_SELECT	648	#if EV_USE_SELECT
426	# include "ev_select.c"	649	# include "ev_select.c"
427	#endif	650	#endif
428		651
429	int	652	int
…		…
436	ev_version_minor (void)	659	ev_version_minor (void)
437	{	660	{
438	return EV_VERSION_MINOR;	661	return EV_VERSION_MINOR;
439	}	662	}
440		663
441	int ev_init (int flags)	664	/* return true if we are running with elevated privileges and should ignore env variables */
		665	static int
		666	enable_secure (void)
442	{	667	{
		668	#ifdef WIN32
		669	return 0;
		670	#else
		671	return getuid () != geteuid ()
		672	|| getgid () != getegid ();
		673	#endif
		674	}
		675
		676	int
		677	ev_method (EV_P)
		678	{
		679	return method;
		680	}
		681
		682	static void
		683	loop_init (EV_P_ int methods)
		684	{
443	if (!ev_method)	685	if (!method)
444	{	686	{
445	#if EV_USE_MONOTONIC	687	#if EV_USE_MONOTONIC
446	{	688	{
447	struct timespec ts;	689	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	690	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	691	have_monotonic = 1;
450	}	692	}
451	#endif	693	#endif
452		694
453	ev_now = ev_time ();	695	rt_now = ev_time ();
454	now = get_clock ();	696	mn_now = get_clock ();
		697	now_floor = mn_now;
455	diff = ev_now - now;	698	rtmn_diff = rt_now - mn_now;
456		699
457	if (pipe (sigpipe))	700	if (methods == EVMETHOD_AUTO)
458	return 0;	701	if (!enable_secure () && getenv ("LIBEV_METHODS"))
459		702	methods = atoi (getenv ("LIBEV_METHODS"));
		703	else
460	ev_method = EVMETHOD_NONE;	704	methods = EVMETHOD_ANY;
		705
		706	method = 0;
		707	#if EV_USE_WIN32
		708	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		709	#endif
		710	#if EV_USE_KQUEUE
		711	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		712	#endif
461	#if EV_USE_EPOLL	713	#if EV_USE_EPOLL
462	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	714	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		715	#endif
		716	#if EV_USE_POLL
		717	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
463	#endif	718	#endif
464	#if EV_USE_SELECT	719	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	720	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
466	#endif	721	#endif
467		722
		723	ev_watcher_init (&sigev, sigcb);
		724	ev_set_priority (&sigev, EV_MAXPRI);
		725	}
		726	}
		727
		728	void
		729	loop_destroy (EV_P)
		730	{
		731	int i;
		732
		733	#if EV_USE_WIN32
		734	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		735	#endif
		736	#if EV_USE_KQUEUE
		737	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		738	#endif
		739	#if EV_USE_EPOLL
		740	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		741	#endif
		742	#if EV_USE_POLL
		743	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		744	#endif
		745	#if EV_USE_SELECT
		746	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		747	#endif
		748
		749	for (i = NUMPRI; i--; )
		750	array_free (pending, [i]);
		751
		752	/* have to use the microsoft-never-gets-it-right macro */
		753	array_free_microshit (fdchange);
		754	array_free_microshit (timer);
		755	array_free_microshit (periodic);
		756	array_free_microshit (idle);
		757	array_free_microshit (prepare);
		758	array_free_microshit (check);
		759
		760	method = 0;
		761	}
		762
		763	static void
		764	loop_fork (EV_P)
		765	{
		766	#if EV_USE_EPOLL
		767	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		768	#endif
		769	#if EV_USE_KQUEUE
		770	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		771	#endif
		772
		773	if (ev_is_active (&sigev))
		774	{
		775	/* default loop */
		776
		777	ev_ref (EV_A);
		778	ev_io_stop (EV_A_ &sigev);
		779	close (sigpipe [0]);
		780	close (sigpipe [1]);
		781
		782	while (pipe (sigpipe))
		783	syserr ("(libev) error creating pipe");
		784
		785	siginit (EV_A);
		786	}
		787
		788	postfork = 0;
		789	}
		790
		791	#if EV_MULTIPLICITY
		792	struct ev_loop *
		793	ev_loop_new (int methods)
		794	{
		795	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		796
		797	memset (loop, 0, sizeof (struct ev_loop));
		798
		799	loop_init (EV_A_ methods);
		800
		801	if (ev_method (EV_A))
		802	return loop;
		803
		804	return 0;
		805	}
		806
		807	void
		808	ev_loop_destroy (EV_P)
		809	{
		810	loop_destroy (EV_A);
		811	ev_free (loop);
		812	}
		813
		814	void
		815	ev_loop_fork (EV_P)
		816	{
		817	postfork = 1;
		818	}
		819
		820	#endif
		821
		822	#if EV_MULTIPLICITY
		823	struct ev_loop default_loop_struct;
		824	static struct ev_loop *default_loop;
		825
		826	struct ev_loop *
		827	#else
		828	static int default_loop;
		829
		830	int
		831	#endif
		832	ev_default_loop (int methods)
		833	{
		834	if (sigpipe [0] == sigpipe [1])
		835	if (pipe (sigpipe))
		836	return 0;
		837
		838	if (!default_loop)
		839	{
		840	#if EV_MULTIPLICITY
		841	struct ev_loop *loop = default_loop = &default_loop_struct;
		842	#else
		843	default_loop = 1;
		844	#endif
		845
		846	loop_init (EV_A_ methods);
		847
468	if (ev_method)	848	if (ev_method (EV_A))
469	{	849	{
470	ev_watcher_init (&sigev, sigcb);
471	siginit ();	850	siginit (EV_A);
472		851
		852	#ifndef WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	853	ev_signal_init (&childev, childcb, SIGCHLD);
		854	ev_set_priority (&childev, EV_MAXPRI);
474	ev_signal_start (&childev);	855	ev_signal_start (EV_A_ &childev);
		856	ev_unref (EV_A); /* child watcher should not keep loop alive */
		857	#endif
475	}	858	}
		859	else
		860	default_loop = 0;
476	}	861	}
477		862
478	return ev_method;	863	return default_loop;
		864	}
		865
		866	void
		867	ev_default_destroy (void)
		868	{
		869	#if EV_MULTIPLICITY
		870	struct ev_loop *loop = default_loop;
		871	#endif
		872
		873	#ifndef WIN32
		874	ev_ref (EV_A); /* child watcher */
		875	ev_signal_stop (EV_A_ &childev);
		876	#endif
		877
		878	ev_ref (EV_A); /* signal watcher */
		879	ev_io_stop (EV_A_ &sigev);
		880
		881	close (sigpipe [0]); sigpipe [0] = 0;
		882	close (sigpipe [1]); sigpipe [1] = 0;
		883
		884	loop_destroy (EV_A);
		885	}
		886
		887	void
		888	ev_default_fork (void)
		889	{
		890	#if EV_MULTIPLICITY
		891	struct ev_loop *loop = default_loop;
		892	#endif
		893
		894	if (method)
		895	postfork = 1;
479	}	896	}
480		897
481	/*****************************************************************************/	898	/*****************************************************************************/
482		899
483	void
484	ev_prefork (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_parent (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_child (void)
497	{
498	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();
501	#endif
502
503	ev_io_stop (&sigev);
504	close (sigpipe [0]);
505	close (sigpipe [1]);
506	pipe (sigpipe);
507	siginit ();
508	}
509
510	/*****************************************************************************/
511
512	static void	900	static void
513	call_pending (void)	901	call_pending (EV_P)
514	{	902	{
		903	int pri;
		904
		905	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	906	while (pendingcnt [pri])
516	{	907	{
517	ANPENDING *p = pendings + --pendingcnt;	908	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		909
519	if (p->w)	910	if (p->w)
520	{	911	{
521	p->w->pending = 0;	912	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	913	p->w->cb (EV_A_ p->w, p->events);
523	}	914	}
524	}	915	}
525	}	916	}
526		917
527	static void	918	static void
528	timers_reify (void)	919	timers_reify (EV_P)
529	{	920	{
530	while (timercnt && timers [0]->at <= now)	921	while (timercnt && ((WT)timers [0])->at <= mn_now)
531	{	922	{
532	struct ev_timer *w = timers [0];	923	struct ev_timer *w = timers [0];
		924
		925	assert (("inactive timer on timer heap detected", ev_is_active (w)));
533		926
534	/* first reschedule or stop timer */	927	/* first reschedule or stop timer */
535	if (w->repeat)	928	if (w->repeat)
536	{	929	{
		930	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
537	w->at = now + w->repeat;	931	((WT)w)->at = mn_now + w->repeat;
538	assert (("timer timeout in the past, negative repeat?", w->at > now));
539	downheap ((WT *)timers, timercnt, 0);	932	downheap ((WT *)timers, timercnt, 0);
540	}	933	}
541	else	934	else
542	ev_timer_stop (w); /* nonrepeating: stop timer */	935	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
543		936
544	event ((W)w, EV_TIMEOUT);	937	event (EV_A_ (W)w, EV_TIMEOUT);
545	}	938	}
546	}	939	}
547		940
548	static void	941	static void
549	periodics_reify (void)	942	periodics_reify (EV_P)
550	{	943	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	944	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
552	{	945	{
553	struct ev_periodic *w = periodics [0];	946	struct ev_periodic *w = periodics [0];
		947
		948	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
554		949
555	/* first reschedule or stop timer */	950	/* first reschedule or stop timer */
556	if (w->interval)	951	if (w->interval)
557	{	952	{
558	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	953	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
559	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	954	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
560	downheap ((WT *)periodics, periodiccnt, 0);	955	downheap ((WT *)periodics, periodiccnt, 0);
561	}	956	}
562	else	957	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		959
565	event ((W)w, EV_TIMEOUT);	960	event (EV_A_ (W)w, EV_PERIODIC);
566	}	961	}
567	}	962	}
568		963
569	static void	964	static void
570	periodics_reschedule (ev_tstamp diff)	965	periodics_reschedule (EV_P)
571	{	966	{
572	int i;	967	int i;
573		968
574	/* adjust periodics after time jump */	969	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	970	for (i = 0; i < periodiccnt; ++i)
576	{	971	{
577	struct ev_periodic *w = periodics [i];	972	struct ev_periodic *w = periodics [i];
578		973
579	if (w->interval)	974	if (w->interval)
580	{	975	{
581	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	976	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
582		977
583	if (fabs (diff) >= 1e-4)	978	if (fabs (diff) >= 1e-4)
584	{	979	{
585	ev_periodic_stop (w);	980	ev_periodic_stop (EV_A_ w);
586	ev_periodic_start (w);	981	ev_periodic_start (EV_A_ w);
587		982
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	983	i = 0; /* restart loop, inefficient, but time jumps should be rare */
589	}	984	}
590	}	985	}
591	}	986	}
592	}	987	}
593		988
		989	inline int
		990	time_update_monotonic (EV_P)
		991	{
		992	mn_now = get_clock ();
		993
		994	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		995	{
		996	rt_now = rtmn_diff + mn_now;
		997	return 0;
		998	}
		999	else
		1000	{
		1001	now_floor = mn_now;
		1002	rt_now = ev_time ();
		1003	return 1;
		1004	}
		1005	}
		1006
594	static void	1007	static void
595	time_update (void)	1008	time_update (EV_P)
596	{	1009	{
597	int i;	1010	int i;
598		1011
599	ev_now = ev_time ();	1012	#if EV_USE_MONOTONIC
600
601	if (have_monotonic)	1013	if (expect_true (have_monotonic))
602	{	1014	{
603	ev_tstamp odiff = diff;	1015	if (time_update_monotonic (EV_A))
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	1016	{
607	now = get_clock ();	1017	ev_tstamp odiff = rtmn_diff;
		1018
		1019	for (i = 4; --i; ) /* loop a few times, before making important decisions */
		1020	{
608	diff = ev_now - now;	1021	rtmn_diff = rt_now - mn_now;
609		1022
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1023	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
611	return; /* all is well */	1024	return; /* all is well */
612		1025
613	ev_now = ev_time ();	1026	rt_now = ev_time ();
		1027	mn_now = get_clock ();
		1028	now_floor = mn_now;
		1029	}
		1030
		1031	periodics_reschedule (EV_A);
		1032	/* no timer adjustment, as the monotonic clock doesn't jump */
		1033	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
614	}	1034	}
615
616	periodics_reschedule (diff - odiff);
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}	1035	}
619	else	1036	else
		1037	#endif
620	{	1038	{
621	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	1039	rt_now = ev_time ();
		1040
		1041	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
622	{	1042	{
623	periodics_reschedule (ev_now - now);	1043	periodics_reschedule (EV_A);
624		1044
625	/* adjust timers. this is easy, as the offset is the same for all */	1045	/* adjust timers. this is easy, as the offset is the same for all */
626	for (i = 0; i < timercnt; ++i)	1046	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;	1047	((WT)timers [i])->at += rt_now - mn_now;
628	}	1048	}
629		1049
630	now = ev_now;	1050	mn_now = rt_now;
631	}	1051	}
632	}	1052	}
633		1053
634	int ev_loop_done;	1054	void
		1055	ev_ref (EV_P)
		1056	{
		1057	++activecnt;
		1058	}
635		1059
		1060	void
		1061	ev_unref (EV_P)
		1062	{
		1063	--activecnt;
		1064	}
		1065
		1066	static int loop_done;
		1067
		1068	void
636	void ev_loop (int flags)	1069	ev_loop (EV_P_ int flags)
637	{	1070	{
638	double block;	1071	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1072	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
640		1073
641	do	1074	do
642	{	1075	{
643	/* queue check watchers (and execute them) */	1076	/* queue check watchers (and execute them) */
644	if (preparecnt)	1077	if (expect_false (preparecnt))
645	{	1078	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1079	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();	1080	call_pending (EV_A);
648	}	1081	}
649		1082
		1083	/* we might have forked, so reify kernel state if necessary */
		1084	if (expect_false (postfork))
		1085	loop_fork (EV_A);
		1086
650	/* update fd-related kernel structures */	1087	/* update fd-related kernel structures */
651	fd_reify ();	1088	fd_reify (EV_A);
652		1089
653	/* calculate blocking time */	1090	/* calculate blocking time */
654		1091
655	/* we only need this for !monotonic clockor timers, but as we basically	1092	/* we only need this for !monotonic clockor timers, but as we basically
656	always have timers, we just calculate it always */	1093	always have timers, we just calculate it always */
		1094	#if EV_USE_MONOTONIC
		1095	if (expect_true (have_monotonic))
		1096	time_update_monotonic (EV_A);
		1097	else
		1098	#endif
		1099	{
657	ev_now = ev_time ();	1100	rt_now = ev_time ();
		1101	mn_now = rt_now;
		1102	}
658		1103
659	if (flags & EVLOOP_NONBLOCK || idlecnt)	1104	if (flags & EVLOOP_NONBLOCK || idlecnt)
660	block = 0.;	1105	block = 0.;
661	else	1106	else
662	{	1107	{
663	block = MAX_BLOCKTIME;	1108	block = MAX_BLOCKTIME;
664		1109
665	if (timercnt)	1110	if (timercnt)
666	{	1111	{
667	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1112	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
668	if (block > to) block = to;	1113	if (block > to) block = to;
669	}	1114	}
670		1115
671	if (periodiccnt)	1116	if (periodiccnt)
672	{	1117	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1118	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
674	if (block > to) block = to;	1119	if (block > to) block = to;
675	}	1120	}
676		1121
677	if (block < 0.) block = 0.;	1122	if (block < 0.) block = 0.;
678	}	1123	}
679		1124
680	method_poll (block);	1125	method_poll (EV_A_ block);
681		1126
682	/* update ev_now, do magic */	1127	/* update rt_now, do magic */
683	time_update ();	1128	time_update (EV_A);
684		1129
685	/* queue pending timers and reschedule them */	1130	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	1131	timers_reify (EV_A); /* relative timers called last */
687	periodics_reify (); /* absolute timers called first */	1132	periodics_reify (EV_A); /* absolute timers called first */
688		1133
689	/* queue idle watchers unless io or timers are pending */	1134	/* queue idle watchers unless io or timers are pending */
690	if (!pendingcnt)	1135	if (!pendingcnt)
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	1136	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		1137
693	/* queue check watchers, to be executed first */	1138	/* queue check watchers, to be executed first */
694	if (checkcnt)	1139	if (checkcnt)
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	1140	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		1141
697	call_pending ();	1142	call_pending (EV_A);
698	}	1143	}
699	while (!ev_loop_done);	1144	while (activecnt && !loop_done);
700		1145
701	if (ev_loop_done != 2)	1146	if (loop_done != 2)
702	ev_loop_done = 0;	1147	loop_done = 0;
		1148	}
		1149
		1150	void
		1151	ev_unloop (EV_P_ int how)
		1152	{
		1153	loop_done = how;
703	}	1154	}
704		1155
705	/*****************************************************************************/	1156	/*****************************************************************************/
706		1157
707	static void	1158	inline void
708	wlist_add (WL *head, WL elem)	1159	wlist_add (WL *head, WL elem)
709	{	1160	{
710	elem->next = *head;	1161	elem->next = *head;
711	*head = elem;	1162	*head = elem;
712	}	1163	}
713		1164
714	static void	1165	inline void
715	wlist_del (WL *head, WL elem)	1166	wlist_del (WL *head, WL elem)
716	{	1167	{
717	while (*head)	1168	while (*head)
718	{	1169	{
719	if (*head == elem)	1170	if (*head == elem)
…		…
724		1175
725	head = &(*head)->next;	1176	head = &(*head)->next;
726	}	1177	}
727	}	1178	}
728		1179
729	static void	1180	inline void
730	ev_clear (W w)	1181	ev_clear_pending (EV_P_ W w)
731	{	1182	{
732	if (w->pending)	1183	if (w->pending)
733	{	1184	{
734	pendings [w->pending - 1].w = 0;	1185	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	1186	w->pending = 0;
736	}	1187	}
737	}	1188	}
738		1189
739	static void	1190	inline void
740	ev_start (W w, int active)	1191	ev_start (EV_P_ W w, int active)
741	{	1192	{
		1193	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1194	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1195
742	w->active = active;	1196	w->active = active;
		1197	ev_ref (EV_A);
743	}	1198	}
744		1199
745	static void	1200	inline void
746	ev_stop (W w)	1201	ev_stop (EV_P_ W w)
747	{	1202	{
		1203	ev_unref (EV_A);
748	w->active = 0;	1204	w->active = 0;
749	}	1205	}
750		1206
751	/*****************************************************************************/	1207	/*****************************************************************************/
752		1208
753	void	1209	void
754	ev_io_start (struct ev_io *w)	1210	ev_io_start (EV_P_ struct ev_io *w)
755	{	1211	{
		1212	int fd = w->fd;
		1213
756	if (ev_is_active (w))	1214	if (ev_is_active (w))
757	return;	1215	return;
758		1216
759	int fd = w->fd;	1217	assert (("ev_io_start called with negative fd", fd >= 0));
760		1218
761	ev_start ((W)w, 1);	1219	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1220	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1221	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		1222
765	fd_change (fd);	1223	fd_change (EV_A_ fd);
766	}	1224	}
767		1225
768	void	1226	void
769	ev_io_stop (struct ev_io *w)	1227	ev_io_stop (EV_P_ struct ev_io *w)
770	{	1228	{
771	ev_clear ((W)w);	1229	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	1230	if (!ev_is_active (w))
773	return;	1231	return;
774		1232
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1233	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	1234	ev_stop (EV_A_ (W)w);
777		1235
778	fd_change (w->fd);	1236	fd_change (EV_A_ w->fd);
779	}	1237	}
780		1238
781	void	1239	void
782	ev_timer_start (struct ev_timer *w)	1240	ev_timer_start (EV_P_ struct ev_timer *w)
783	{	1241	{
784	if (ev_is_active (w))	1242	if (ev_is_active (w))
785	return;	1243	return;
786		1244
787	w->at += now;	1245	((WT)w)->at += mn_now;
788		1246
789	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1247	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
790		1248
791	ev_start ((W)w, ++timercnt);	1249	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	1250	array_needsize (timers, timermax, timercnt, (void));
793	timers [timercnt - 1] = w;	1251	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	1252	upheap ((WT *)timers, timercnt - 1);
795	}
796		1253
		1254	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1255	}
		1256
797	void	1257	void
798	ev_timer_stop (struct ev_timer *w)	1258	ev_timer_stop (EV_P_ struct ev_timer *w)
799	{	1259	{
800	ev_clear ((W)w);	1260	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1261	if (!ev_is_active (w))
802	return;	1262	return;
803		1263
		1264	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1265
804	if (w->active < timercnt--)	1266	if (((W)w)->active < timercnt--)
805	{	1267	{
806	timers [w->active - 1] = timers [timercnt];	1268	timers [((W)w)->active - 1] = timers [timercnt];
807	downheap ((WT *)timers, timercnt, w->active - 1);	1269	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
808	}	1270	}
809		1271
810	w->at = w->repeat;	1272	((WT)w)->at = w->repeat;
811		1273
812	ev_stop ((W)w);	1274	ev_stop (EV_A_ (W)w);
813	}	1275	}
814		1276
815	void	1277	void
816	ev_timer_again (struct ev_timer *w)	1278	ev_timer_again (EV_P_ struct ev_timer *w)
817	{	1279	{
818	if (ev_is_active (w))	1280	if (ev_is_active (w))
819	{	1281	{
820	if (w->repeat)	1282	if (w->repeat)
821	{	1283	{
822	w->at = now + w->repeat;	1284	((WT)w)->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1285	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
824	}	1286	}
825	else	1287	else
826	ev_timer_stop (w);	1288	ev_timer_stop (EV_A_ w);
827	}	1289	}
828	else if (w->repeat)	1290	else if (w->repeat)
829	ev_timer_start (w);	1291	ev_timer_start (EV_A_ w);
830	}	1292	}
831		1293
832	void	1294	void
833	ev_periodic_start (struct ev_periodic *w)	1295	ev_periodic_start (EV_P_ struct ev_periodic *w)
834	{	1296	{
835	if (ev_is_active (w))	1297	if (ev_is_active (w))
836	return;	1298	return;
837		1299
838	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1300	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
839		1301
840	/* this formula differs from the one in periodic_reify because we do not always round up */	1302	/* this formula differs from the one in periodic_reify because we do not always round up */
841	if (w->interval)	1303	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1304	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
843		1305
844	ev_start ((W)w, ++periodiccnt);	1306	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1307	array_needsize (periodics, periodicmax, periodiccnt, (void));
846	periodics [periodiccnt - 1] = w;	1308	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1309	upheap ((WT *)periodics, periodiccnt - 1);
848	}
849		1310
		1311	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1312	}
		1313
850	void	1314	void
851	ev_periodic_stop (struct ev_periodic *w)	1315	ev_periodic_stop (EV_P_ struct ev_periodic *w)
852	{	1316	{
853	ev_clear ((W)w);	1317	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1318	if (!ev_is_active (w))
855	return;	1319	return;
856		1320
		1321	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1322
857	if (w->active < periodiccnt--)	1323	if (((W)w)->active < periodiccnt--)
858	{	1324	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1325	periodics [((W)w)->active - 1] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1326	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
861	}	1327	}
862		1328
863	ev_stop ((W)w);	1329	ev_stop (EV_A_ (W)w);
864	}	1330	}
865		1331
866	void	1332	void
867	ev_signal_start (struct ev_signal *w)	1333	ev_idle_start (EV_P_ struct ev_idle *w)
868	{	1334	{
869	if (ev_is_active (w))	1335	if (ev_is_active (w))
870	return;	1336	return;
871		1337
		1338	ev_start (EV_A_ (W)w, ++idlecnt);
		1339	array_needsize (idles, idlemax, idlecnt, (void));
		1340	idles [idlecnt - 1] = w;
		1341	}
		1342
		1343	void
		1344	ev_idle_stop (EV_P_ struct ev_idle *w)
		1345	{
		1346	ev_clear_pending (EV_A_ (W)w);
		1347	if (ev_is_active (w))
		1348	return;
		1349
		1350	idles [((W)w)->active - 1] = idles [--idlecnt];
		1351	ev_stop (EV_A_ (W)w);
		1352	}
		1353
		1354	void
		1355	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1356	{
		1357	if (ev_is_active (w))
		1358	return;
		1359
		1360	ev_start (EV_A_ (W)w, ++preparecnt);
		1361	array_needsize (prepares, preparemax, preparecnt, (void));
		1362	prepares [preparecnt - 1] = w;
		1363	}
		1364
		1365	void
		1366	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1367	{
		1368	ev_clear_pending (EV_A_ (W)w);
		1369	if (ev_is_active (w))
		1370	return;
		1371
		1372	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1373	ev_stop (EV_A_ (W)w);
		1374	}
		1375
		1376	void
		1377	ev_check_start (EV_P_ struct ev_check *w)
		1378	{
		1379	if (ev_is_active (w))
		1380	return;
		1381
		1382	ev_start (EV_A_ (W)w, ++checkcnt);
		1383	array_needsize (checks, checkmax, checkcnt, (void));
		1384	checks [checkcnt - 1] = w;
		1385	}
		1386
		1387	void
		1388	ev_check_stop (EV_P_ struct ev_check *w)
		1389	{
		1390	ev_clear_pending (EV_A_ (W)w);
		1391	if (ev_is_active (w))
		1392	return;
		1393
		1394	checks [((W)w)->active - 1] = checks [--checkcnt];
		1395	ev_stop (EV_A_ (W)w);
		1396	}
		1397
		1398	#ifndef SA_RESTART
		1399	# define SA_RESTART 0
		1400	#endif
		1401
		1402	void
		1403	ev_signal_start (EV_P_ struct ev_signal *w)
		1404	{
		1405	#if EV_MULTIPLICITY
		1406	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1407	#endif
		1408	if (ev_is_active (w))
		1409	return;
		1410
		1411	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1412
872	ev_start ((W)w, 1);	1413	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1414	array_needsize (signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1415	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1416
876	if (!w->next)	1417	if (!((WL)w)->next)
877	{	1418	{
		1419	#if WIN32
		1420	signal (w->signum, sighandler);
		1421	#else
878	struct sigaction sa;	1422	struct sigaction sa;
879	sa.sa_handler = sighandler;	1423	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1424	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1425	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1426	sigaction (w->signum, &sa, 0);
		1427	#endif
883	}	1428	}
884	}	1429	}
885		1430
886	void	1431	void
887	ev_signal_stop (struct ev_signal *w)	1432	ev_signal_stop (EV_P_ struct ev_signal *w)
888	{	1433	{
889	ev_clear ((W)w);	1434	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1435	if (!ev_is_active (w))
891	return;	1436	return;
892		1437
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1438	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1439	ev_stop (EV_A_ (W)w);
895		1440
896	if (!signals [w->signum - 1].head)	1441	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1442	signal (w->signum, SIG_DFL);
898	}	1443	}
899		1444
900	void	1445	void
901	ev_idle_start (struct ev_idle *w)	1446	ev_child_start (EV_P_ struct ev_child *w)
902	{	1447	{
		1448	#if EV_MULTIPLICITY
		1449	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1450	#endif
903	if (ev_is_active (w))	1451	if (ev_is_active (w))
904	return;	1452	return;
905		1453
906	ev_start ((W)w, ++idlecnt);	1454	ev_start (EV_A_ (W)w, 1);
907	array_needsize (idles, idlemax, idlecnt, );	1455	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
908	idles [idlecnt - 1] = w;
909	}	1456	}
910		1457
911	void	1458	void
912	ev_idle_stop (struct ev_idle *w)	1459	ev_child_stop (EV_P_ struct ev_child *w)
913	{	1460	{
914	ev_clear ((W)w);	1461	ev_clear_pending (EV_A_ (W)w);
915	if (ev_is_active (w))	1462	if (ev_is_active (w))
916	return;	1463	return;
917		1464
918	idles [w->active - 1] = idles [--idlecnt];
919	ev_stop ((W)w);
920	}
921
922	void
923	ev_prepare_start (struct ev_prepare *w)
924	{
925	if (ev_is_active (w))
926	return;
927
928	ev_start ((W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );
930	prepares [preparecnt - 1] = w;
931	}
932
933	void
934	ev_prepare_stop (struct ev_prepare *w)
935	{
936	ev_clear ((W)w);
937	if (ev_is_active (w))
938	return;
939
940	prepares [w->active - 1] = prepares [--preparecnt];
941	ev_stop ((W)w);
942	}
943
944	void
945	ev_check_start (struct ev_check *w)
946	{
947	if (ev_is_active (w))
948	return;
949
950	ev_start ((W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );
952	checks [checkcnt - 1] = w;
953	}
954
955	void
956	ev_check_stop (struct ev_check *w)
957	{
958	ev_clear ((W)w);
959	if (ev_is_active (w))
960	return;
961
962	checks [w->active - 1] = checks [--checkcnt];
963	ev_stop ((W)w);
964	}
965
966	void
967	ev_child_start (struct ev_child *w)
968	{
969	if (ev_is_active (w))
970	return;
971
972	ev_start ((W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}
975
976	void
977	ev_child_stop (struct ev_child *w)
978	{
979	ev_clear ((W)w);
980	if (ev_is_active (w))
981	return;
982
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1465	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
984	ev_stop ((W)w);	1466	ev_stop (EV_A_ (W)w);
985	}	1467	}
986		1468
987	/*****************************************************************************/	1469	/*****************************************************************************/
988		1470
989	struct ev_once	1471	struct ev_once
…		…
993	void (*cb)(int revents, void *arg);	1475	void (*cb)(int revents, void *arg);
994	void *arg;	1476	void *arg;
995	};	1477	};
996		1478
997	static void	1479	static void
998	once_cb (struct ev_once *once, int revents)	1480	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	1481	{
1000	void (*cb)(int revents, void *arg) = once->cb;	1482	void (*cb)(int revents, void *arg) = once->cb;
1001	void *arg = once->arg;	1483	void *arg = once->arg;
1002		1484
1003	ev_io_stop (&once->io);	1485	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	1486	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	1487	ev_free (once);
1006		1488
1007	cb (revents, arg);	1489	cb (revents, arg);
1008	}	1490	}
1009		1491
1010	static void	1492	static void
1011	once_cb_io (struct ev_io *w, int revents)	1493	once_cb_io (EV_P_ struct ev_io *w, int revents)
1012	{	1494	{
1013	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1495	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1014	}	1496	}
1015		1497
1016	static void	1498	static void
1017	once_cb_to (struct ev_timer *w, int revents)	1499	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1018	{	1500	{
1019	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1501	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1020	}	1502	}
1021		1503
1022	void	1504	void
1023	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1505	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1024	{	1506	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	1507	struct ev_once *once = ev_malloc (sizeof (struct ev_once));
1026		1508
1027	if (!once)	1509	if (!once)
1028	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1510	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1029	else	1511	else
1030	{	1512	{
…		…
1033		1515
1034	ev_watcher_init (&once->io, once_cb_io);	1516	ev_watcher_init (&once->io, once_cb_io);
1035	if (fd >= 0)	1517	if (fd >= 0)
1036	{	1518	{
1037	ev_io_set (&once->io, fd, events);	1519	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	1520	ev_io_start (EV_A_ &once->io);
1039	}	1521	}
1040		1522
1041	ev_watcher_init (&once->to, once_cb_to);	1523	ev_watcher_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	1524	if (timeout >= 0.)
1043	{	1525	{
1044	ev_timer_set (&once->to, timeout, 0.);	1526	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	1527	ev_timer_start (EV_A_ &once->to);
1046	}	1528	}
1047	}	1529	}
1048	}	1530	}
1049		1531
1050	/*****************************************************************************/
1051
1052	#if 0
1053
1054	struct ev_io wio;
1055
1056	static void
1057	sin_cb (struct ev_io *w, int revents)
1058	{
1059	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1060	}
1061
1062	static void
1063	ocb (struct ev_timer *w, int revents)
1064	{
1065	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1066	ev_timer_stop (w);
1067	ev_timer_start (w);
1068	}
1069
1070	static void
1071	scb (struct ev_signal *w, int revents)
1072	{
1073	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1074	ev_io_stop (&wio);
1075	ev_io_start (&wio);
1076	}
1077
1078	static void
1079	gcb (struct ev_signal *w, int revents)
1080	{
1081	fprintf (stderr, "generic %x\n", revents);
1082
1083	}
1084
1085	int main (void)
1086	{
1087	ev_init (0);
1088
1089	ev_io_init (&wio, sin_cb, 0, EV_READ);
1090	ev_io_start (&wio);
1091
1092	struct ev_timer t[10000];
1093
1094	#if 0
1095	int i;
1096	for (i = 0; i < 10000; ++i)
1097	{
1098	struct ev_timer *w = t + i;
1099	ev_watcher_init (w, ocb, i);
1100	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1101	ev_timer_start (w);
1102	if (drand48 () < 0.5)
1103	ev_timer_stop (w);
1104	}
1105	#endif
1106
1107	struct ev_timer t1;
1108	ev_timer_init (&t1, ocb, 5, 10);
1109	ev_timer_start (&t1);
1110
1111	struct ev_signal sig;
1112	ev_signal_init (&sig, scb, SIGQUIT);
1113	ev_signal_start (&sig);
1114
1115	struct ev_check cw;
1116	ev_check_init (&cw, gcb);
1117	ev_check_start (&cw);
1118
1119	struct ev_idle iw;
1120	ev_idle_init (&iw, gcb);
1121	ev_idle_start (&iw);
1122
1123	ev_loop (0);
1124
1125	return 0;
1126	}
1127
1128	#endif
1129
1130
1131
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