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Comparing libev/ev.c (file contents):
Revision 1.17 by root, Wed Oct 31 14:44:15 2007 UTC vs.
Revision 1.97 by root, Sun Nov 11 01:53:07 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
…		…
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		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
		37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
		64	#endif
		65
30	#include <math.h>	66	#include <math.h>
31	#include <stdlib.h>	67	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	68	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	69	#include <stddef.h>
36		70
37	#include <stdio.h>	71	#include <stdio.h>
38		72
39	#include <assert.h>	73	#include <assert.h>
40	#include <errno.h>	74	#include <errno.h>
41	#include <sys/time.h>	75	#include <sys/types.h>
42	#include <time.h>	76	#include <time.h>
43		77
44	#define HAVE_EPOLL 1	78	#include <signal.h>
45		79
		80	#ifndef WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#endif
		85	/**/
		86
46	#ifndef HAVE_MONOTONIC	87	#ifndef EV_USE_MONOTONIC
47	# ifdef CLOCK_MONOTONIC
48	# define HAVE_MONOTONIC 1	88	# define EV_USE_MONOTONIC 1
		89	#endif
		90
		91	#ifndef EV_USE_SELECT
		92	# define EV_USE_SELECT 1
		93	#endif
		94
		95	#ifndef EV_USE_POLL
		96	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		97	#endif
		98
		99	#ifndef EV_USE_EPOLL
		100	# define EV_USE_EPOLL 0
		101	#endif
		102
		103	#ifndef EV_USE_KQUEUE
		104	# define EV_USE_KQUEUE 0
		105	#endif
		106
		107	#ifndef EV_USE_WIN32
		108	# ifdef WIN32
		109	# define EV_USE_WIN32 0 /* it does not exist, use select */
		110	# undef EV_USE_SELECT
		111	# define EV_USE_SELECT 1
		112	# else
		113	# define EV_USE_WIN32 0
49	# endif	114	# endif
50	#endif	115	#endif
51		116
52	#ifndef HAVE_SELECT
53	# define HAVE_SELECT 1
54	#endif
55
56	#ifndef HAVE_EPOLL
57	# define HAVE_EPOLL 0
58	#endif
59
60	#ifndef HAVE_REALTIME	117	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	118	# define EV_USE_REALTIME 1
62	#endif	119	#endif
		120
		121	/**/
		122
		123	#ifndef CLOCK_MONOTONIC
		124	# undef EV_USE_MONOTONIC
		125	# define EV_USE_MONOTONIC 0
		126	#endif
		127
		128	#ifndef CLOCK_REALTIME
		129	# undef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
		131	#endif
		132
		133	/**/
63		134
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	135	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	136	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		138	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
66		139
		140	#ifdef EV_H
		141	# include EV_H
		142	#else
67	#include "ev.h"	143	# include "ev.h"
		144	#endif
		145
		146	#if __GNUC__ >= 3
		147	# define expect(expr,value) __builtin_expect ((expr),(value))
		148	# define inline inline
		149	#else
		150	# define expect(expr,value) (expr)
		151	# define inline static
		152	#endif
		153
		154	#define expect_false(expr) expect ((expr) != 0, 0)
		155	#define expect_true(expr) expect ((expr) != 0, 1)
		156
		157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
68		159
69	typedef struct ev_watcher *W;	160	typedef struct ev_watcher *W;
70	typedef struct ev_watcher_list *WL;	161	typedef struct ev_watcher_list *WL;
71	typedef struct ev_watcher_time *WT;	162	typedef struct ev_watcher_time *WT;
72		163
73	static ev_tstamp now, diff; /* monotonic clock */	164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		165
		166	#include "ev_win32.c"
		167
		168	/*****************************************************************************/
		169
		170	static void (*syserr_cb)(const char *msg);
		171
		172	void ev_set_syserr_cb (void (*cb)(const char *msg))
		173	{
		174	syserr_cb = cb;
		175	}
		176
		177	static void
		178	syserr (const char *msg)
		179	{
		180	if (!msg)
		181	msg = "(libev) system error";
		182
		183	if (syserr_cb)
		184	syserr_cb (msg);
		185	else
		186	{
		187	perror (msg);
		188	abort ();
		189	}
		190	}
		191
		192	static void *(*alloc)(void *ptr, long size);
		193
		194	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		195	{
		196	alloc = cb;
		197	}
		198
		199	static void *
		200	ev_realloc (void *ptr, long size)
		201	{
		202	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		203
		204	if (!ptr && size)
		205	{
		206	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		207	abort ();
		208	}
		209
		210	return ptr;
		211	}
		212
		213	#define ev_malloc(size) ev_realloc (0, (size))
		214	#define ev_free(ptr) ev_realloc ((ptr), 0)
		215
		216	/*****************************************************************************/
		217
		218	typedef struct
		219	{
		220	WL head;
		221	unsigned char events;
		222	unsigned char reify;
		223	} ANFD;
		224
		225	typedef struct
		226	{
		227	W w;
		228	int events;
		229	} ANPENDING;
		230
		231	#if EV_MULTIPLICITY
		232
		233	struct ev_loop
		234	{
		235	ev_tstamp ev_rt_now;
		236	#define VAR(name,decl) decl;
		237	#include "ev_vars.h"
		238	#undef VAR
		239	};
		240	#include "ev_wrap.h"
		241
		242	struct ev_loop default_loop_struct;
		243	static struct ev_loop *default_loop;
		244
		245	#else
		246
74	ev_tstamp ev_now;	247	ev_tstamp ev_rt_now;
75	int ev_method;	248	#define VAR(name,decl) static decl;
		249	#include "ev_vars.h"
		250	#undef VAR
76		251
77	static int have_monotonic; /* runtime */	252	static int default_loop;
78		253
79	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	254	#endif
80	static void (*method_modify)(int fd, int oev, int nev);
81	static void (*method_poll)(ev_tstamp timeout);
82		255
83	/*****************************************************************************/	256	/*****************************************************************************/
84		257
85	ev_tstamp	258	ev_tstamp
86	ev_time (void)	259	ev_time (void)
87	{	260	{
88	#if HAVE_REALTIME	261	#if EV_USE_REALTIME
89	struct timespec ts;	262	struct timespec ts;
90	clock_gettime (CLOCK_REALTIME, &ts);	263	clock_gettime (CLOCK_REALTIME, &ts);
91	return ts.tv_sec + ts.tv_nsec * 1e-9;	264	return ts.tv_sec + ts.tv_nsec * 1e-9;
92	#else	265	#else
93	struct timeval tv;	266	struct timeval tv;
94	gettimeofday (&tv, 0);	267	gettimeofday (&tv, 0);
95	return tv.tv_sec + tv.tv_usec * 1e-6;	268	return tv.tv_sec + tv.tv_usec * 1e-6;
96	#endif	269	#endif
97	}	270	}
98		271
99	static ev_tstamp	272	inline ev_tstamp
100	get_clock (void)	273	get_clock (void)
101	{	274	{
102	#if HAVE_MONOTONIC	275	#if EV_USE_MONOTONIC
103	if (have_monotonic)	276	if (expect_true (have_monotonic))
104	{	277	{
105	struct timespec ts;	278	struct timespec ts;
106	clock_gettime (CLOCK_MONOTONIC, &ts);	279	clock_gettime (CLOCK_MONOTONIC, &ts);
107	return ts.tv_sec + ts.tv_nsec * 1e-9;	280	return ts.tv_sec + ts.tv_nsec * 1e-9;
108	}	281	}
109	#endif	282	#endif
110		283
111	return ev_time ();	284	return ev_time ();
112	}	285	}
113		286
		287	#if EV_MULTIPLICITY
		288	ev_tstamp
		289	ev_now (EV_P)
		290	{
		291	return ev_rt_now;
		292	}
		293	#endif
		294
		295	#define array_roundsize(type,n) ((n) | 4 & ~3)
		296
114	#define array_needsize(base,cur,cnt,init) \	297	#define array_needsize(type,base,cur,cnt,init) \
115	if ((cnt) > cur) \	298	if (expect_false ((cnt) > cur)) \
116	{ \	299	{ \
117	int newcnt = cur ? cur << 1 : 16; \	300	int newcnt = cur; \
		301	do \
		302	{ \
		303	newcnt = array_roundsize (type, newcnt << 1); \
		304	} \
		305	while ((cnt) > newcnt); \
		306	\
118	base = realloc (base, sizeof (*base) * (newcnt)); \	307	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
119	init (base + cur, newcnt - cur); \	308	init (base + cur, newcnt - cur); \
120	cur = newcnt; \	309	cur = newcnt; \
121	}	310	}
		311
		312	#define array_slim(type,stem) \
		313	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		314	{ \
		315	stem ## max = array_roundsize (stem ## cnt >> 1); \
		316	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		317	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		318	}
		319
		320	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		321	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		322	#define array_free_microshit(stem) \
		323	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		324
		325	#define array_free(stem, idx) \
		326	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
122		327
123	/*****************************************************************************/	328	/*****************************************************************************/
124		329
125	typedef struct
126	{
127	struct ev_io *head;
128	unsigned char wev, rev; /* want, received event set */
129	} ANFD;
130
131	static ANFD *anfds;
132	static int anfdmax;
133
134	static int *fdchanges;
135	static int fdchangemax, fdchangecnt;
136
137	static void	330	static void
138	anfds_init (ANFD *base, int count)	331	anfds_init (ANFD *base, int count)
139	{	332	{
140	while (count--)	333	while (count--)
141	{	334	{
142	base->head = 0;	335	base->head = 0;
143	base->wev = base->rev = EV_NONE;	336	base->events = EV_NONE;
		337	base->reify = 0;
		338
144	++base;	339	++base;
145	}	340	}
146	}	341	}
147		342
148	typedef struct	343	void
		344	ev_feed_event (EV_P_ void *w, int revents)
149	{	345	{
150	W w;	346	W w_ = (W)w;
151	int events;
152	} ANPENDING;
153		347
154	static ANPENDING *pendings;	348	if (w_->pending)
155	static int pendingmax, pendingcnt;
156
157	static void
158	event (W w, int events)
159	{
160	if (w->active)
161	{	349	{
162	w->pending = ++pendingcnt;
163	array_needsize (pendings, pendingmax, pendingcnt, );
164	pendings [pendingcnt - 1].w = w;
165	pendings [pendingcnt - 1].events = events;	350	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		351	return;
166	}	352	}
167	}
168		353
		354	w_->pending = ++pendingcnt [ABSPRI (w_)];
		355	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		356	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		357	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		358	}
		359
169	static void	360	static void
		361	queue_events (EV_P_ W *events, int eventcnt, int type)
		362	{
		363	int i;
		364
		365	for (i = 0; i < eventcnt; ++i)
		366	ev_feed_event (EV_A_ events [i], type);
		367	}
		368
		369	inline void
170	fd_event (int fd, int events)	370	fd_event (EV_P_ int fd, int revents)
171	{	371	{
172	ANFD *anfd = anfds + fd;	372	ANFD *anfd = anfds + fd;
173	struct ev_io *w;	373	struct ev_io *w;
174		374
175	for (w = anfd->head; w; w = w->next)	375	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
176	{	376	{
177	int ev = w->events & events;	377	int ev = w->events & revents;
178		378
179	if (ev)	379	if (ev)
180	event ((W)w, ev);	380	ev_feed_event (EV_A_ (W)w, ev);
181	}	381	}
182	}	382	}
183		383
		384	void
		385	ev_feed_fd_event (EV_P_ int fd, int revents)
		386	{
		387	fd_event (EV_A_ fd, revents);
		388	}
		389
		390	/*****************************************************************************/
		391
184	static void	392	static void
185	queue_events (W *events, int eventcnt, int type)	393	fd_reify (EV_P)
186	{	394	{
187	int i;	395	int i;
188		396
189	for (i = 0; i < eventcnt; ++i)	397	for (i = 0; i < fdchangecnt; ++i)
190	event (events [i], type);	398	{
		399	int fd = fdchanges [i];
		400	ANFD *anfd = anfds + fd;
		401	struct ev_io *w;
		402
		403	int events = 0;
		404
		405	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
		406	events |= w->events;
		407
		408	anfd->reify = 0;
		409
		410	method_modify (EV_A_ fd, anfd->events, events);
		411	anfd->events = events;
		412	}
		413
		414	fdchangecnt = 0;
		415	}
		416
		417	static void
		418	fd_change (EV_P_ int fd)
		419	{
		420	if (anfds [fd].reify)
		421	return;
		422
		423	anfds [fd].reify = 1;
		424
		425	++fdchangecnt;
		426	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
		427	fdchanges [fdchangecnt - 1] = fd;
		428	}
		429
		430	static void
		431	fd_kill (EV_P_ int fd)
		432	{
		433	struct ev_io *w;
		434
		435	while ((w = (struct ev_io *)anfds [fd].head))
		436	{
		437	ev_io_stop (EV_A_ w);
		438	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		439	}
		440	}
		441
		442	static int
		443	fd_valid (int fd)
		444	{
		445	#ifdef WIN32
		446	return !!win32_get_osfhandle (fd);
		447	#else
		448	return fcntl (fd, F_GETFD) != -1;
		449	#endif
		450	}
		451
		452	/* called on EBADF to verify fds */
		453	static void
		454	fd_ebadf (EV_P)
		455	{
		456	int fd;
		457
		458	for (fd = 0; fd < anfdmax; ++fd)
		459	if (anfds [fd].events)
		460	if (!fd_valid (fd) == -1 && errno == EBADF)
		461	fd_kill (EV_A_ fd);
		462	}
		463
		464	/* called on ENOMEM in select/poll to kill some fds and retry */
		465	static void
		466	fd_enomem (EV_P)
		467	{
		468	int fd;
		469
		470	for (fd = anfdmax; fd--; )
		471	if (anfds [fd].events)
		472	{
		473	fd_kill (EV_A_ fd);
		474	return;
		475	}
		476	}
		477
		478	/* usually called after fork if method needs to re-arm all fds from scratch */
		479	static void
		480	fd_rearm_all (EV_P)
		481	{
		482	int fd;
		483
		484	/* this should be highly optimised to not do anything but set a flag */
		485	for (fd = 0; fd < anfdmax; ++fd)
		486	if (anfds [fd].events)
		487	{
		488	anfds [fd].events = 0;
		489	fd_change (EV_A_ fd);
		490	}
191	}	491	}
192		492
193	/*****************************************************************************/	493	/*****************************************************************************/
194		494
195	static struct ev_timer **timers;
196	static int timermax, timercnt;
197
198	static struct ev_periodic **periodics;
199	static int periodicmax, periodiccnt;
200
201	static void	495	static void
202	upheap (WT *timers, int k)	496	upheap (WT *heap, int k)
203	{	497	{
204	WT w = timers [k];	498	WT w = heap [k];
205		499
206	while (k && timers [k >> 1]->at > w->at)	500	while (k && heap [k >> 1]->at > w->at)
207	{	501	{
208	timers [k] = timers [k >> 1];	502	heap [k] = heap [k >> 1];
209	timers [k]->active = k + 1;	503	((W)heap [k])->active = k + 1;
210	k >>= 1;	504	k >>= 1;
211	}	505	}
212		506
213	timers [k] = w;	507	heap [k] = w;
214	timers [k]->active = k + 1;	508	((W)heap [k])->active = k + 1;
215		509
216	}	510	}
217		511
218	static void	512	static void
219	downheap (WT *timers, int N, int k)	513	downheap (WT *heap, int N, int k)
220	{	514	{
221	WT w = timers [k];	515	WT w = heap [k];
222		516
223	while (k < (N >> 1))	517	while (k < (N >> 1))
224	{	518	{
225	int j = k << 1;	519	int j = k << 1;
226		520
227	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	521	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
228	++j;	522	++j;
229		523
230	if (w->at <= timers [j]->at)	524	if (w->at <= heap [j]->at)
231	break;	525	break;
232		526
233	timers [k] = timers [j];	527	heap [k] = heap [j];
234	timers [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
235	k = j;	529	k = j;
236	}	530	}
237		531
238	timers [k] = w;	532	heap [k] = w;
239	timers [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
		534	}
		535
		536	inline void
		537	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		538	{
		539	ev_tstamp old_at = heap [k]->at;
		540	heap [k]->at = at;
		541
		542	if (old_at < at)
		543	downheap (heap, N, k);
		544	else
		545	upheap (heap, k);
240	}	546	}
241		547
242	/*****************************************************************************/	548	/*****************************************************************************/
243		549
244	typedef struct	550	typedef struct
245	{	551	{
246	struct ev_signal *head;	552	WL head;
247	sig_atomic_t gotsig;	553	sig_atomic_t volatile gotsig;
248	} ANSIG;	554	} ANSIG;
249		555
250	static ANSIG *signals;	556	static ANSIG *signals;
251	static int signalmax;	557	static int signalmax;
252		558
253	static int sigpipe [2];	559	static int sigpipe [2];
254	static sig_atomic_t gotsig;	560	static sig_atomic_t volatile gotsig;
255	static struct ev_io sigev;	561	static struct ev_io sigev;
256		562
257	static void	563	static void
258	signals_init (ANSIG *base, int count)	564	signals_init (ANSIG *base, int count)
259	{	565	{
260	while (count--)	566	while (count--)
261	{	567	{
262	base->head = 0;	568	base->head = 0;
263	base->gotsig = 0;	569	base->gotsig = 0;
		570
264	++base;	571	++base;
265	}	572	}
266	}	573	}
267		574
268	static void	575	static void
269	sighandler (int signum)	576	sighandler (int signum)
270	{	577	{
		578	#if WIN32
		579	signal (signum, sighandler);
		580	#endif
		581
271	signals [signum - 1].gotsig = 1;	582	signals [signum - 1].gotsig = 1;
272		583
273	if (!gotsig)	584	if (!gotsig)
274	{	585	{
		586	int old_errno = errno;
275	gotsig = 1;	587	gotsig = 1;
		588	#ifdef WIN32
		589	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		590	#else
276	write (sigpipe [1], &gotsig, 1);	591	write (sigpipe [1], &signum, 1);
		592	#endif
		593	errno = old_errno;
277	}	594	}
278	}	595	}
279		596
		597	void
		598	ev_feed_signal_event (EV_P_ int signum)
		599	{
		600	WL w;
		601
		602	#if EV_MULTIPLICITY
		603	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		604	#endif
		605
		606	--signum;
		607
		608	if (signum < 0 || signum >= signalmax)
		609	return;
		610
		611	signals [signum].gotsig = 0;
		612
		613	for (w = signals [signum].head; w; w = w->next)
		614	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		615	}
		616
280	static void	617	static void
281	sigcb (struct ev_io *iow, int revents)	618	sigcb (EV_P_ struct ev_io *iow, int revents)
282	{	619	{
283	struct ev_signal *w;
284	int sig;	620	int signum;
285		621
		622	#ifdef WIN32
		623	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		624	#else
		625	read (sigpipe [0], &revents, 1);
		626	#endif
286	gotsig = 0;	627	gotsig = 0;
287	read (sigpipe [0], &revents, 1);
288		628
289	for (sig = signalmax; sig--; )	629	for (signum = signalmax; signum--; )
290	if (signals [sig].gotsig)	630	if (signals [signum].gotsig)
291	{	631	ev_feed_signal_event (EV_A_ signum + 1);
292	signals [sig].gotsig = 0;
293
294	for (w = signals [sig].head; w; w = w->next)
295	event ((W)w, EV_SIGNAL);
296	}
297	}	632	}
298		633
299	static void	634	static void
300	siginit (void)	635	siginit (EV_P)
301	{	636	{
		637	#ifndef WIN32
302	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	638	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
303	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	639	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
304		640
305	/* rather than sort out wether we really need nb, set it */	641	/* rather than sort out wether we really need nb, set it */
306	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	642	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
307	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	643	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		644	#endif
308		645
309	evio_set (&sigev, sigpipe [0], EV_READ);	646	ev_io_set (&sigev, sigpipe [0], EV_READ);
310	evio_start (&sigev);	647	ev_io_start (EV_A_ &sigev);
		648	ev_unref (EV_A); /* child watcher should not keep loop alive */
311	}	649	}
312		650
313	/*****************************************************************************/	651	/*****************************************************************************/
314		652
315	static struct ev_idle **idles;	653	static struct ev_child *childs [PID_HASHSIZE];
316	static int idlemax, idlecnt;
317		654
318	static struct ev_check **checks;	655	#ifndef WIN32
319	static int checkmax, checkcnt;	656
		657	static struct ev_signal childev;
		658
		659	#ifndef WCONTINUED
		660	# define WCONTINUED 0
		661	#endif
		662
		663	static void
		664	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
		665	{
		666	struct ev_child *w;
		667
		668	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		669	if (w->pid == pid || !w->pid)
		670	{
		671	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		672	w->rpid = pid;
		673	w->rstatus = status;
		674	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		675	}
		676	}
		677
		678	static void
		679	childcb (EV_P_ struct ev_signal *sw, int revents)
		680	{
		681	int pid, status;
		682
		683	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
		684	{
		685	/* make sure we are called again until all childs have been reaped */
		686	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		687
		688	child_reap (EV_A_ sw, pid, pid, status);
		689	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		690	}
		691	}
		692
		693	#endif
320		694
321	/*****************************************************************************/	695	/*****************************************************************************/
322		696
		697	#if EV_USE_KQUEUE
		698	# include "ev_kqueue.c"
		699	#endif
323	#if HAVE_EPOLL	700	#if EV_USE_EPOLL
324	# include "ev_epoll.c"	701	# include "ev_epoll.c"
325	#endif	702	#endif
		703	#if EV_USE_POLL
		704	# include "ev_poll.c"
		705	#endif
326	#if HAVE_SELECT	706	#if EV_USE_SELECT
327	# include "ev_select.c"	707	# include "ev_select.c"
328	#endif	708	#endif
329		709
330	int ev_init (int flags)	710	int
		711	ev_version_major (void)
331	{	712	{
		713	return EV_VERSION_MAJOR;
		714	}
		715
		716	int
		717	ev_version_minor (void)
		718	{
		719	return EV_VERSION_MINOR;
		720	}
		721
		722	/* return true if we are running with elevated privileges and should ignore env variables */
		723	static int
		724	enable_secure (void)
		725	{
		726	#ifdef WIN32
		727	return 0;
		728	#else
		729	return getuid () != geteuid ()
		730	|| getgid () != getegid ();
		731	#endif
		732	}
		733
		734	int
		735	ev_method (EV_P)
		736	{
		737	return method;
		738	}
		739
		740	static void
		741	loop_init (EV_P_ int methods)
		742	{
		743	if (!method)
		744	{
332	#if HAVE_MONOTONIC	745	#if EV_USE_MONOTONIC
333	{	746	{
334	struct timespec ts;	747	struct timespec ts;
335	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	748	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
336	have_monotonic = 1;	749	have_monotonic = 1;
337	}	750	}
338	#endif	751	#endif
339		752
340	ev_now = ev_time ();	753	ev_rt_now = ev_time ();
341	now = get_clock ();	754	mn_now = get_clock ();
342	diff = ev_now - now;	755	now_floor = mn_now;
		756	rtmn_diff = ev_rt_now - mn_now;
343		757
344	if (pipe (sigpipe))	758	if (methods == EVMETHOD_AUTO)
345	return 0;	759	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		760	methods = atoi (getenv ("LIBEV_METHODS"));
		761	else
		762	methods = EVMETHOD_ANY;
346		763
347	ev_method = EVMETHOD_NONE;	764	method = 0;
		765	#if EV_USE_WIN32
		766	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		767	#endif
		768	#if EV_USE_KQUEUE
		769	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		770	#endif
348	#if HAVE_EPOLL	771	#if EV_USE_EPOLL
349	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	772	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
350	#endif	773	#endif
		774	#if EV_USE_POLL
		775	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		776	#endif
351	#if HAVE_SELECT	777	#if EV_USE_SELECT
352	if (ev_method == EVMETHOD_NONE) select_init (flags);	778	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
353	#endif	779	#endif
354		780
355	if (ev_method)
356	{
357	evw_init (&sigev, sigcb);	781	ev_init (&sigev, sigcb);
		782	ev_set_priority (&sigev, EV_MAXPRI);
		783	}
		784	}
		785
		786	void
		787	loop_destroy (EV_P)
		788	{
		789	int i;
		790
		791	#if EV_USE_WIN32
		792	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		793	#endif
		794	#if EV_USE_KQUEUE
		795	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		796	#endif
		797	#if EV_USE_EPOLL
		798	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		799	#endif
		800	#if EV_USE_POLL
		801	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		802	#endif
		803	#if EV_USE_SELECT
		804	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		805	#endif
		806
		807	for (i = NUMPRI; i--; )
		808	array_free (pending, [i]);
		809
		810	/* have to use the microsoft-never-gets-it-right macro */
		811	array_free_microshit (fdchange);
		812	array_free_microshit (timer);
		813	#if EV_PERIODICS
		814	array_free_microshit (periodic);
		815	#endif
		816	array_free_microshit (idle);
		817	array_free_microshit (prepare);
		818	array_free_microshit (check);
		819
		820	method = 0;
		821	}
		822
		823	static void
		824	loop_fork (EV_P)
		825	{
		826	#if EV_USE_EPOLL
		827	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		828	#endif
		829	#if EV_USE_KQUEUE
		830	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		831	#endif
		832
		833	if (ev_is_active (&sigev))
		834	{
		835	/* default loop */
		836
		837	ev_ref (EV_A);
		838	ev_io_stop (EV_A_ &sigev);
		839	close (sigpipe [0]);
		840	close (sigpipe [1]);
		841
		842	while (pipe (sigpipe))
		843	syserr ("(libev) error creating pipe");
		844
358	siginit ();	845	siginit (EV_A);
		846	}
		847
		848	postfork = 0;
		849	}
		850
		851	#if EV_MULTIPLICITY
		852	struct ev_loop *
		853	ev_loop_new (int methods)
		854	{
		855	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		856
		857	memset (loop, 0, sizeof (struct ev_loop));
		858
		859	loop_init (EV_A_ methods);
		860
		861	if (ev_method (EV_A))
		862	return loop;
		863
		864	return 0;
		865	}
		866
		867	void
		868	ev_loop_destroy (EV_P)
		869	{
		870	loop_destroy (EV_A);
		871	ev_free (loop);
		872	}
		873
		874	void
		875	ev_loop_fork (EV_P)
		876	{
		877	postfork = 1;
		878	}
		879
		880	#endif
		881
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *
		884	#else
		885	int
		886	#endif
		887	ev_default_loop (int methods)
		888	{
		889	if (sigpipe [0] == sigpipe [1])
		890	if (pipe (sigpipe))
		891	return 0;
		892
		893	if (!default_loop)
359	}	894	{
		895	#if EV_MULTIPLICITY
		896	struct ev_loop *loop = default_loop = &default_loop_struct;
		897	#else
		898	default_loop = 1;
		899	#endif
360		900
361	return ev_method;	901	loop_init (EV_A_ methods);
		902
		903	if (ev_method (EV_A))
		904	{
		905	siginit (EV_A);
		906
		907	#ifndef WIN32
		908	ev_signal_init (&childev, childcb, SIGCHLD);
		909	ev_set_priority (&childev, EV_MAXPRI);
		910	ev_signal_start (EV_A_ &childev);
		911	ev_unref (EV_A); /* child watcher should not keep loop alive */
		912	#endif
		913	}
		914	else
		915	default_loop = 0;
		916	}
		917
		918	return default_loop;
		919	}
		920
		921	void
		922	ev_default_destroy (void)
		923	{
		924	#if EV_MULTIPLICITY
		925	struct ev_loop *loop = default_loop;
		926	#endif
		927
		928	#ifndef WIN32
		929	ev_ref (EV_A); /* child watcher */
		930	ev_signal_stop (EV_A_ &childev);
		931	#endif
		932
		933	ev_ref (EV_A); /* signal watcher */
		934	ev_io_stop (EV_A_ &sigev);
		935
		936	close (sigpipe [0]); sigpipe [0] = 0;
		937	close (sigpipe [1]); sigpipe [1] = 0;
		938
		939	loop_destroy (EV_A);
		940	}
		941
		942	void
		943	ev_default_fork (void)
		944	{
		945	#if EV_MULTIPLICITY
		946	struct ev_loop *loop = default_loop;
		947	#endif
		948
		949	if (method)
		950	postfork = 1;
362	}	951	}
363		952
364	/*****************************************************************************/	953	/*****************************************************************************/
365		954
366	void ev_prefork (void)
367	{
368	/* nop */
369	}
370
371	void ev_postfork_parent (void)
372	{
373	/* nop */
374	}
375
376	void ev_postfork_child (void)
377	{
378	#if HAVE_EPOLL
379	if (ev_method == EVMETHOD_EPOLL)
380	epoll_postfork_child ();
381	#endif
382
383	evio_stop (&sigev);
384	close (sigpipe [0]);
385	close (sigpipe [1]);
386	pipe (sigpipe);
387	siginit ();
388	}
389
390	/*****************************************************************************/
391
392	static void	955	static int
393	fd_reify (void)	956	any_pending (EV_P)
394	{	957	{
395	int i;	958	int pri;
396		959
397	for (i = 0; i < fdchangecnt; ++i)	960	for (pri = NUMPRI; pri--; )
398	{	961	if (pendingcnt [pri])
399	int fd = fdchanges [i];	962	return 1;
400	ANFD *anfd = anfds + fd;
401	struct ev_io *w;
402		963
403	int wev = 0;	964	return 0;
404
405	for (w = anfd->head; w; w = w->next)
406	wev |= w->events;
407
408	if (anfd->wev != wev)
409	{
410	method_modify (fd, anfd->wev, wev);
411	anfd->wev = wev;
412	}
413	}
414
415	fdchangecnt = 0;
416	}	965	}
417		966
418	static void	967	static void
419	call_pending ()	968	call_pending (EV_P)
420	{	969	{
421	int i;	970	int pri;
422		971
423	for (i = 0; i < pendingcnt; ++i)	972	for (pri = NUMPRI; pri--; )
		973	while (pendingcnt [pri])
424	{	974	{
425	ANPENDING *p = pendings + i;	975	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
426		976
427	if (p->w)	977	if (p->w)
428	{	978	{
429	p->w->pending = 0;	979	p->w->pending = 0;
430	p->w->cb (p->w, p->events);	980	EV_CB_INVOKE (p->w, p->events);
431	}	981	}
432	}	982	}
433
434	pendingcnt = 0;
435	}	983	}
436		984
437	static void	985	static void
438	timers_reify ()	986	timers_reify (EV_P)
439	{	987	{
440	while (timercnt && timers [0]->at <= now)	988	while (timercnt && ((WT)timers [0])->at <= mn_now)
441	{	989	{
442	struct ev_timer *w = timers [0];	990	struct ev_timer *w = timers [0];
443		991
444	event ((W)w, EV_TIMEOUT);	992	assert (("inactive timer on timer heap detected", ev_is_active (w)));
445		993
446	/* first reschedule or stop timer */	994	/* first reschedule or stop timer */
447	if (w->repeat)	995	if (w->repeat)
448	{	996	{
		997	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		998
449	w->at = now + w->repeat;	999	((WT)w)->at += w->repeat;
450	assert (("timer timeout in the past, negative repeat?", w->at > now));	1000	if (((WT)w)->at < mn_now)
		1001	((WT)w)->at = mn_now;
		1002
451	downheap ((WT *)timers, timercnt, 0);	1003	downheap ((WT *)timers, timercnt, 0);
452	}	1004	}
453	else	1005	else
454	evtimer_stop (w); /* nonrepeating: stop timer */	1006	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
455	}
456	}
457		1007
		1008	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1009	}
		1010	}
		1011
		1012	#if EV_PERIODICS
458	static void	1013	static void
459	periodics_reify ()	1014	periodics_reify (EV_P)
460	{	1015	{
461	while (periodiccnt && periodics [0]->at <= ev_now)	1016	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
462	{	1017	{
463	struct ev_periodic *w = periodics [0];	1018	struct ev_periodic *w = periodics [0];
464		1019
		1020	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1021
465	/* first reschedule or stop timer */	1022	/* first reschedule or stop timer */
466	if (w->interval)	1023	if (w->reschedule_cb)
467	{	1024	{
		1025	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1026
		1027	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1028	downheap ((WT *)periodics, periodiccnt, 0);
		1029	}
		1030	else if (w->interval)
		1031	{
468	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1032	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
469	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1033	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
470	downheap ((WT *)periodics, periodiccnt, 0);	1034	downheap ((WT *)periodics, periodiccnt, 0);
471	}	1035	}
472	else	1036	else
473	evperiodic_stop (w); /* nonrepeating: stop timer */	1037	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
474		1038
475	event ((W)w, EV_TIMEOUT);	1039	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
476	}	1040	}
477	}	1041	}
478		1042
479	static void	1043	static void
480	periodics_reschedule (ev_tstamp diff)	1044	periodics_reschedule (EV_P)
481	{	1045	{
482	int i;	1046	int i;
483		1047
484	/* adjust periodics after time jump */	1048	/* adjust periodics after time jump */
485	for (i = 0; i < periodiccnt; ++i)	1049	for (i = 0; i < periodiccnt; ++i)
486	{	1050	{
487	struct ev_periodic *w = periodics [i];	1051	struct ev_periodic *w = periodics [i];
488		1052
		1053	if (w->reschedule_cb)
		1054	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
489	if (w->interval)	1055	else if (w->interval)
		1056	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1057	}
		1058
		1059	/* now rebuild the heap */
		1060	for (i = periodiccnt >> 1; i--; )
		1061	downheap ((WT *)periodics, periodiccnt, i);
		1062	}
		1063	#endif
		1064
		1065	inline int
		1066	time_update_monotonic (EV_P)
		1067	{
		1068	mn_now = get_clock ();
		1069
		1070	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1071	{
		1072	ev_rt_now = rtmn_diff + mn_now;
		1073	return 0;
		1074	}
		1075	else
		1076	{
		1077	now_floor = mn_now;
		1078	ev_rt_now = ev_time ();
		1079	return 1;
		1080	}
		1081	}
		1082
		1083	static void
		1084	time_update (EV_P)
		1085	{
		1086	int i;
		1087
		1088	#if EV_USE_MONOTONIC
		1089	if (expect_true (have_monotonic))
		1090	{
		1091	if (time_update_monotonic (EV_A))
490	{	1092	{
491	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1093	ev_tstamp odiff = rtmn_diff;
492		1094
493	if (fabs (diff) >= 1e-4)	1095	for (i = 4; --i; ) /* loop a few times, before making important decisions */
494	{	1096	{
495	evperiodic_stop (w);	1097	rtmn_diff = ev_rt_now - mn_now;
496	evperiodic_start (w);
497		1098
498	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1099	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1100	return; /* all is well */
		1101
		1102	ev_rt_now = ev_time ();
		1103	mn_now = get_clock ();
		1104	now_floor = mn_now;
499	}	1105	}
		1106
		1107	# if EV_PERIODICS
		1108	periodics_reschedule (EV_A);
		1109	# endif
		1110	/* no timer adjustment, as the monotonic clock doesn't jump */
		1111	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
500	}	1112	}
501	}	1113	}
502	}	1114	else
503		1115	#endif
504	static void	1116	{
505	time_update ()
506	{
507	int i;
508
509	ev_now = ev_time ();	1117	ev_rt_now = ev_time ();
510		1118
511	if (have_monotonic)	1119	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
512	{
513	ev_tstamp odiff = diff;
514
515	for (i = 4; --i; ) /* loop a few times, before making important decisions */
516	{	1120	{
517	now = get_clock ();	1121	#if EV_PERIODICS
518	diff = ev_now - now;
519
520	if (fabs (odiff - diff) < MIN_TIMEJUMP)
521	return; /* all is well */
522
523	ev_now = ev_time ();
524	}
525
526	periodics_reschedule (diff - odiff);
527	/* no timer adjustment, as the monotonic clock doesn't jump */
528	}
529	else
530	{
531	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
532	{
533	periodics_reschedule (ev_now - now);	1122	periodics_reschedule (EV_A);
		1123	#endif
534		1124
535	/* adjust timers. this is easy, as the offset is the same for all */	1125	/* adjust timers. this is easy, as the offset is the same for all */
536	for (i = 0; i < timercnt; ++i)	1126	for (i = 0; i < timercnt; ++i)
537	timers [i]->at += diff;	1127	((WT)timers [i])->at += ev_rt_now - mn_now;
538	}	1128	}
539		1129
540	now = ev_now;	1130	mn_now = ev_rt_now;
541	}	1131	}
542	}	1132	}
543		1133
544	int ev_loop_done;	1134	void
		1135	ev_ref (EV_P)
		1136	{
		1137	++activecnt;
		1138	}
545		1139
		1140	void
		1141	ev_unref (EV_P)
		1142	{
		1143	--activecnt;
		1144	}
		1145
		1146	static int loop_done;
		1147
		1148	void
546	void ev_loop (int flags)	1149	ev_loop (EV_P_ int flags)
547	{	1150	{
548	double block;	1151	double block;
549	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	1152	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
550
551	if (checkcnt)
552	{
553	queue_events ((W *)checks, checkcnt, EV_CHECK);
554	call_pending ();
555	}
556		1153
557	do	1154	do
558	{	1155	{
		1156	/* queue check watchers (and execute them) */
		1157	if (expect_false (preparecnt))
		1158	{
		1159	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
		1160	call_pending (EV_A);
		1161	}
		1162
		1163	/* we might have forked, so reify kernel state if necessary */
		1164	if (expect_false (postfork))
		1165	loop_fork (EV_A);
		1166
559	/* update fd-related kernel structures */	1167	/* update fd-related kernel structures */
560	fd_reify ();	1168	fd_reify (EV_A);
561		1169
562	/* calculate blocking time */	1170	/* calculate blocking time */
563		1171
564	/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */	1172	/* we only need this for !monotonic clock or timers, but as we basically
		1173	always have timers, we just calculate it always */
		1174	#if EV_USE_MONOTONIC
		1175	if (expect_true (have_monotonic))
		1176	time_update_monotonic (EV_A);
		1177	else
		1178	#endif
		1179	{
565	ev_now = ev_time ();	1180	ev_rt_now = ev_time ();
		1181	mn_now = ev_rt_now;
		1182	}
566		1183
567	if (flags & EVLOOP_NONBLOCK || idlecnt)	1184	if (flags & EVLOOP_NONBLOCK || idlecnt)
568	block = 0.;	1185	block = 0.;
569	else	1186	else
570	{	1187	{
571	block = MAX_BLOCKTIME;	1188	block = MAX_BLOCKTIME;
572		1189
573	if (timercnt)	1190	if (timercnt)
574	{	1191	{
575	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1192	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
576	if (block > to) block = to;	1193	if (block > to) block = to;
577	}	1194	}
578		1195
		1196	#if EV_PERIODICS
579	if (periodiccnt)	1197	if (periodiccnt)
580	{	1198	{
581	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1199	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
582	if (block > to) block = to;	1200	if (block > to) block = to;
583	}	1201	}
		1202	#endif
584		1203
585	if (block < 0.) block = 0.;	1204	if (block < 0.) block = 0.;
586	}	1205	}
587		1206
588	method_poll (block);	1207	method_poll (EV_A_ block);
589		1208
590	/* update ev_now, do magic */	1209	/* update ev_rt_now, do magic */
591	time_update ();	1210	time_update (EV_A);
592		1211
593	/* queue pending timers and reschedule them */	1212	/* queue pending timers and reschedule them */
		1213	timers_reify (EV_A); /* relative timers called last */
		1214	#if EV_PERIODICS
594	periodics_reify (); /* absolute timers first */	1215	periodics_reify (EV_A); /* absolute timers called first */
595	timers_reify (); /* relative timers second */	1216	#endif
596		1217
597	/* queue idle watchers unless io or timers are pending */	1218	/* queue idle watchers unless io or timers are pending */
598	if (!pendingcnt)	1219	if (idlecnt && !any_pending (EV_A))
599	queue_events ((W *)idles, idlecnt, EV_IDLE);	1220	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
600		1221
601	/* queue check and possibly idle watchers */	1222	/* queue check watchers, to be executed first */
		1223	if (checkcnt)
602	queue_events ((W *)checks, checkcnt, EV_CHECK);	1224	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
603		1225
604	call_pending ();	1226	call_pending (EV_A);
605	}	1227	}
606	while (!ev_loop_done);	1228	while (activecnt && !loop_done);
607		1229
608	if (ev_loop_done != 2)	1230	if (loop_done != 2)
609	ev_loop_done = 0;	1231	loop_done = 0;
		1232	}
		1233
		1234	void
		1235	ev_unloop (EV_P_ int how)
		1236	{
		1237	loop_done = how;
610	}	1238	}
611		1239
612	/*****************************************************************************/	1240	/*****************************************************************************/
613		1241
614	static void	1242	inline void
615	wlist_add (WL *head, WL elem)	1243	wlist_add (WL *head, WL elem)
616	{	1244	{
617	elem->next = *head;	1245	elem->next = *head;
618	*head = elem;	1246	*head = elem;
619	}	1247	}
620		1248
621	static void	1249	inline void
622	wlist_del (WL *head, WL elem)	1250	wlist_del (WL *head, WL elem)
623	{	1251	{
624	while (*head)	1252	while (*head)
625	{	1253	{
626	if (*head == elem)	1254	if (*head == elem)
…		…
631		1259
632	head = &(*head)->next;	1260	head = &(*head)->next;
633	}	1261	}
634	}	1262	}
635		1263
636	static void	1264	inline void
637	ev_clear (W w)	1265	ev_clear_pending (EV_P_ W w)
638	{	1266	{
639	if (w->pending)	1267	if (w->pending)
640	{	1268	{
641	pendings [w->pending - 1].w = 0;	1269	pendings [ABSPRI (w)][w->pending - 1].w = 0;
642	w->pending = 0;	1270	w->pending = 0;
643	}	1271	}
644	}	1272	}
645		1273
646	static void	1274	inline void
647	ev_start (W w, int active)	1275	ev_start (EV_P_ W w, int active)
648	{	1276	{
		1277	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1278	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1279
649	w->active = active;	1280	w->active = active;
		1281	ev_ref (EV_A);
650	}	1282	}
651		1283
652	static void	1284	inline void
653	ev_stop (W w)	1285	ev_stop (EV_P_ W w)
654	{	1286	{
		1287	ev_unref (EV_A);
655	w->active = 0;	1288	w->active = 0;
656	}	1289	}
657		1290
658	/*****************************************************************************/	1291	/*****************************************************************************/
659		1292
660	void	1293	void
661	evio_start (struct ev_io *w)	1294	ev_io_start (EV_P_ struct ev_io *w)
662	{	1295	{
		1296	int fd = w->fd;
		1297
663	if (ev_is_active (w))	1298	if (ev_is_active (w))
664	return;	1299	return;
665		1300
666	int fd = w->fd;	1301	assert (("ev_io_start called with negative fd", fd >= 0));
667		1302
668	ev_start ((W)w, 1);	1303	ev_start (EV_A_ (W)w, 1);
669	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1304	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
670	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1305	wlist_add ((WL *)&anfds[fd].head, (WL)w);
671		1306
672	++fdchangecnt;	1307	fd_change (EV_A_ fd);
673	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
674	fdchanges [fdchangecnt - 1] = fd;
675	}	1308	}
676		1309
677	void	1310	void
678	evio_stop (struct ev_io *w)	1311	ev_io_stop (EV_P_ struct ev_io *w)
679	{	1312	{
680	ev_clear ((W)w);	1313	ev_clear_pending (EV_A_ (W)w);
681	if (!ev_is_active (w))	1314	if (!ev_is_active (w))
682	return;	1315	return;
683		1316
		1317	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1318
684	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1319	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
685	ev_stop ((W)w);	1320	ev_stop (EV_A_ (W)w);
686		1321
687	++fdchangecnt;	1322	fd_change (EV_A_ w->fd);
688	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
689	fdchanges [fdchangecnt - 1] = w->fd;
690	}	1323	}
691		1324
692	void	1325	void
693	evtimer_start (struct ev_timer *w)	1326	ev_timer_start (EV_P_ struct ev_timer *w)
694	{	1327	{
695	if (ev_is_active (w))	1328	if (ev_is_active (w))
696	return;	1329	return;
697		1330
698	w->at += now;	1331	((WT)w)->at += mn_now;
699		1332
700	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1333	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
701		1334
702	ev_start ((W)w, ++timercnt);	1335	ev_start (EV_A_ (W)w, ++timercnt);
703	array_needsize (timers, timermax, timercnt, );	1336	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
704	timers [timercnt - 1] = w;	1337	timers [timercnt - 1] = w;
705	upheap ((WT *)timers, timercnt - 1);	1338	upheap ((WT *)timers, timercnt - 1);
706	}
707		1339
		1340	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1341	}
		1342
708	void	1343	void
709	evtimer_stop (struct ev_timer *w)	1344	ev_timer_stop (EV_P_ struct ev_timer *w)
710	{	1345	{
711	ev_clear ((W)w);	1346	ev_clear_pending (EV_A_ (W)w);
712	if (!ev_is_active (w))	1347	if (!ev_is_active (w))
713	return;	1348	return;
714		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1351
715	if (w->active < timercnt--)	1352	if (((W)w)->active < timercnt--)
716	{	1353	{
717	timers [w->active - 1] = timers [timercnt];	1354	timers [((W)w)->active - 1] = timers [timercnt];
718	downheap ((WT *)timers, timercnt, w->active - 1);	1355	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
719	}	1356	}
720		1357
721	w->at = w->repeat;	1358	((WT)w)->at -= mn_now;
722		1359
723	ev_stop ((W)w);	1360	ev_stop (EV_A_ (W)w);
724	}	1361	}
725		1362
726	void	1363	void
727	evtimer_again (struct ev_timer *w)	1364	ev_timer_again (EV_P_ struct ev_timer *w)
728	{	1365	{
729	if (ev_is_active (w))	1366	if (ev_is_active (w))
730	{	1367	{
731	if (w->repeat)	1368	if (w->repeat)
732	{
733	w->at = now + w->repeat;
734	downheap ((WT *)timers, timercnt, w->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
735	}
736	else	1370	else
737	evtimer_stop (w);	1371	ev_timer_stop (EV_A_ w);
738	}	1372	}
739	else if (w->repeat)	1373	else if (w->repeat)
740	evtimer_start (w);	1374	ev_timer_start (EV_A_ w);
741	}	1375	}
742		1376
		1377	#if EV_PERIODICS
743	void	1378	void
744	evperiodic_start (struct ev_periodic *w)	1379	ev_periodic_start (EV_P_ struct ev_periodic *w)
745	{	1380	{
746	if (ev_is_active (w))	1381	if (ev_is_active (w))
747	return;	1382	return;
748		1383
749	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1384	if (w->reschedule_cb)
750		1385	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1386	else if (w->interval)
		1387	{
		1388	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
751	/* this formula differs from the one in periodic_reify because we do not always round up */	1389	/* this formula differs from the one in periodic_reify because we do not always round up */
752	if (w->interval)
753	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1390	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1391	}
754		1392
755	ev_start ((W)w, ++periodiccnt);	1393	ev_start (EV_A_ (W)w, ++periodiccnt);
756	array_needsize (periodics, periodicmax, periodiccnt, );	1394	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
757	periodics [periodiccnt - 1] = w;	1395	periodics [periodiccnt - 1] = w;
758	upheap ((WT *)periodics, periodiccnt - 1);	1396	upheap ((WT *)periodics, periodiccnt - 1);
759	}
760		1397
		1398	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1399	}
		1400
761	void	1401	void
762	evperiodic_stop (struct ev_periodic *w)	1402	ev_periodic_stop (EV_P_ struct ev_periodic *w)
763	{	1403	{
764	ev_clear ((W)w);	1404	ev_clear_pending (EV_A_ (W)w);
765	if (!ev_is_active (w))	1405	if (!ev_is_active (w))
766	return;	1406	return;
767		1407
		1408	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1409
768	if (w->active < periodiccnt--)	1410	if (((W)w)->active < periodiccnt--)
769	{	1411	{
770	periodics [w->active - 1] = periodics [periodiccnt];	1412	periodics [((W)w)->active - 1] = periodics [periodiccnt];
771	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1413	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
772	}	1414	}
773		1415
774	ev_stop ((W)w);	1416	ev_stop (EV_A_ (W)w);
775	}	1417	}
776		1418
777	void	1419	void
778	evsignal_start (struct ev_signal *w)	1420	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1421	{
		1422	/* TODO: use adjustheap and recalculation */
		1423	ev_periodic_stop (EV_A_ w);
		1424	ev_periodic_start (EV_A_ w);
		1425	}
		1426	#endif
		1427
		1428	void
		1429	ev_idle_start (EV_P_ struct ev_idle *w)
779	{	1430	{
780	if (ev_is_active (w))	1431	if (ev_is_active (w))
781	return;	1432	return;
782		1433
		1434	ev_start (EV_A_ (W)w, ++idlecnt);
		1435	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1436	idles [idlecnt - 1] = w;
		1437	}
		1438
		1439	void
		1440	ev_idle_stop (EV_P_ struct ev_idle *w)
		1441	{
		1442	ev_clear_pending (EV_A_ (W)w);
		1443	if (ev_is_active (w))
		1444	return;
		1445
		1446	idles [((W)w)->active - 1] = idles [--idlecnt];
		1447	ev_stop (EV_A_ (W)w);
		1448	}
		1449
		1450	void
		1451	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1452	{
		1453	if (ev_is_active (w))
		1454	return;
		1455
		1456	ev_start (EV_A_ (W)w, ++preparecnt);
		1457	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1458	prepares [preparecnt - 1] = w;
		1459	}
		1460
		1461	void
		1462	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1463	{
		1464	ev_clear_pending (EV_A_ (W)w);
		1465	if (ev_is_active (w))
		1466	return;
		1467
		1468	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1469	ev_stop (EV_A_ (W)w);
		1470	}
		1471
		1472	void
		1473	ev_check_start (EV_P_ struct ev_check *w)
		1474	{
		1475	if (ev_is_active (w))
		1476	return;
		1477
		1478	ev_start (EV_A_ (W)w, ++checkcnt);
		1479	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1480	checks [checkcnt - 1] = w;
		1481	}
		1482
		1483	void
		1484	ev_check_stop (EV_P_ struct ev_check *w)
		1485	{
		1486	ev_clear_pending (EV_A_ (W)w);
		1487	if (!ev_is_active (w))
		1488	return;
		1489
		1490	checks [((W)w)->active - 1] = checks [--checkcnt];
		1491	ev_stop (EV_A_ (W)w);
		1492	}
		1493
		1494	#ifndef SA_RESTART
		1495	# define SA_RESTART 0
		1496	#endif
		1497
		1498	void
		1499	ev_signal_start (EV_P_ struct ev_signal *w)
		1500	{
		1501	#if EV_MULTIPLICITY
		1502	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1503	#endif
		1504	if (ev_is_active (w))
		1505	return;
		1506
		1507	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1508
783	ev_start ((W)w, 1);	1509	ev_start (EV_A_ (W)w, 1);
784	array_needsize (signals, signalmax, w->signum, signals_init);	1510	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
785	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1511	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
786		1512
787	if (!w->next)	1513	if (!((WL)w)->next)
788	{	1514	{
		1515	#if WIN32
		1516	signal (w->signum, sighandler);
		1517	#else
789	struct sigaction sa;	1518	struct sigaction sa;
790	sa.sa_handler = sighandler;	1519	sa.sa_handler = sighandler;
791	sigfillset (&sa.sa_mask);	1520	sigfillset (&sa.sa_mask);
792	sa.sa_flags = 0;	1521	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
793	sigaction (w->signum, &sa, 0);	1522	sigaction (w->signum, &sa, 0);
		1523	#endif
794	}	1524	}
795	}	1525	}
796		1526
797	void	1527	void
798	evsignal_stop (struct ev_signal *w)	1528	ev_signal_stop (EV_P_ struct ev_signal *w)
799	{	1529	{
800	ev_clear ((W)w);	1530	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1531	if (!ev_is_active (w))
802	return;	1532	return;
803		1533
804	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1534	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
805	ev_stop ((W)w);	1535	ev_stop (EV_A_ (W)w);
806		1536
807	if (!signals [w->signum - 1].head)	1537	if (!signals [w->signum - 1].head)
808	signal (w->signum, SIG_DFL);	1538	signal (w->signum, SIG_DFL);
809	}	1539	}
810		1540
811	void evidle_start (struct ev_idle *w)	1541	void
		1542	ev_child_start (EV_P_ struct ev_child *w)
812	{	1543	{
		1544	#if EV_MULTIPLICITY
		1545	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1546	#endif
813	if (ev_is_active (w))	1547	if (ev_is_active (w))
814	return;	1548	return;
815		1549
816	ev_start ((W)w, ++idlecnt);	1550	ev_start (EV_A_ (W)w, 1);
817	array_needsize (idles, idlemax, idlecnt, );	1551	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
818	idles [idlecnt - 1] = w;
819	}	1552	}
820		1553
821	void evidle_stop (struct ev_idle *w)	1554	void
		1555	ev_child_stop (EV_P_ struct ev_child *w)
822	{	1556	{
823	ev_clear ((W)w);	1557	ev_clear_pending (EV_A_ (W)w);
824	if (ev_is_active (w))	1558	if (!ev_is_active (w))
825	return;	1559	return;
826		1560
827	idles [w->active - 1] = idles [--idlecnt];	1561	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
828	ev_stop ((W)w);	1562	ev_stop (EV_A_ (W)w);
829	}
830
831	void evcheck_start (struct ev_check *w)
832	{
833	if (ev_is_active (w))
834	return;
835
836	ev_start ((W)w, ++checkcnt);
837	array_needsize (checks, checkmax, checkcnt, );
838	checks [checkcnt - 1] = w;
839	}
840
841	void evcheck_stop (struct ev_check *w)
842	{
843	ev_clear ((W)w);
844	if (ev_is_active (w))
845	return;
846
847	checks [w->active - 1] = checks [--checkcnt];
848	ev_stop ((W)w);
849	}	1563	}
850		1564
851	/*****************************************************************************/	1565	/*****************************************************************************/
852		1566
853	struct ev_once	1567	struct ev_once
…		…
857	void (*cb)(int revents, void *arg);	1571	void (*cb)(int revents, void *arg);
858	void *arg;	1572	void *arg;
859	};	1573	};
860		1574
861	static void	1575	static void
862	once_cb (struct ev_once *once, int revents)	1576	once_cb (EV_P_ struct ev_once *once, int revents)
863	{	1577	{
864	void (*cb)(int revents, void *arg) = once->cb;	1578	void (*cb)(int revents, void *arg) = once->cb;
865	void *arg = once->arg;	1579	void *arg = once->arg;
866		1580
867	evio_stop (&once->io);	1581	ev_io_stop (EV_A_ &once->io);
868	evtimer_stop (&once->to);	1582	ev_timer_stop (EV_A_ &once->to);
869	free (once);	1583	ev_free (once);
870		1584
871	cb (revents, arg);	1585	cb (revents, arg);
872	}	1586	}
873		1587
874	static void	1588	static void
875	once_cb_io (struct ev_io *w, int revents)	1589	once_cb_io (EV_P_ struct ev_io *w, int revents)
876	{	1590	{
877	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1591	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
878	}	1592	}
879		1593
880	static void	1594	static void
881	once_cb_to (struct ev_timer *w, int revents)	1595	once_cb_to (EV_P_ struct ev_timer *w, int revents)
882	{	1596	{
883	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1597	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
884	}	1598	}
885		1599
886	void	1600	void
887	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1601	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
888	{	1602	{
889	struct ev_once *once = malloc (sizeof (struct ev_once));	1603	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
890		1604
891	if (!once)	1605	if (!once)
892	cb (EV_ERROR, arg);	1606	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
893	else	1607	else
894	{	1608	{
895	once->cb = cb;	1609	once->cb = cb;
896	once->arg = arg;	1610	once->arg = arg;
897		1611
898	evw_init (&once->io, once_cb_io);	1612	ev_init (&once->io, once_cb_io);
899
900	if (fd >= 0)	1613	if (fd >= 0)
901	{	1614	{
902	evio_set (&once->io, fd, events);	1615	ev_io_set (&once->io, fd, events);
903	evio_start (&once->io);	1616	ev_io_start (EV_A_ &once->io);
904	}	1617	}
905		1618
906	evw_init (&once->to, once_cb_to);	1619	ev_init (&once->to, once_cb_to);
907
908	if (timeout >= 0.)	1620	if (timeout >= 0.)
909	{	1621	{
910	evtimer_set (&once->to, timeout, 0.);	1622	ev_timer_set (&once->to, timeout, 0.);
911	evtimer_start (&once->to);	1623	ev_timer_start (EV_A_ &once->to);
912	}	1624	}
913	}	1625	}
914	}	1626	}
915		1627
916	/*****************************************************************************/	1628	#ifdef __cplusplus
917
918	#if 0
919
920	struct ev_io wio;
921
922	static void
923	sin_cb (struct ev_io *w, int revents)
924	{
925	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
926	}	1629	}
927
928	static void
929	ocb (struct ev_timer *w, int revents)
930	{
931	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
932	evtimer_stop (w);
933	evtimer_start (w);
934	}
935
936	static void
937	scb (struct ev_signal *w, int revents)
938	{
939	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
940	evio_stop (&wio);
941	evio_start (&wio);
942	}
943
944	static void
945	gcb (struct ev_signal *w, int revents)
946	{
947	fprintf (stderr, "generic %x\n", revents);
948
949	}
950
951	int main (void)
952	{
953	ev_init (0);
954
955	evio_init (&wio, sin_cb, 0, EV_READ);
956	evio_start (&wio);
957
958	struct ev_timer t[10000];
959
960	#if 0
961	int i;
962	for (i = 0; i < 10000; ++i)
963	{
964	struct ev_timer *w = t + i;
965	evw_init (w, ocb, i);
966	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
967	evtimer_start (w);
968	if (drand48 () < 0.5)
969	evtimer_stop (w);
970	}
971	#endif	1630	#endif
972		1631
973	struct ev_timer t1;
974	evtimer_init (&t1, ocb, 5, 10);
975	evtimer_start (&t1);
976
977	struct ev_signal sig;
978	evsignal_init (&sig, scb, SIGQUIT);
979	evsignal_start (&sig);
980
981	struct ev_check cw;
982	evcheck_init (&cw, gcb);
983	evcheck_start (&cw);
984
985	struct ev_idle iw;
986	evidle_init (&iw, gcb);
987	evidle_start (&iw);
988
989	ev_loop (0);
990
991	return 0;
992	}
993
994	#endif
995
996
997
998

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