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Comparing libev/ev.c (file contents):
Revision 1.22 by root, Wed Oct 31 19:07:43 2007 UTC vs.
Revision 1.80 by root, Fri Nov 9 15:30:59 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	*/
		31	#ifndef EV_STANDALONE
		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
		55	#endif
29		56
30	#include <math.h>	57	#include <math.h>
31	#include <stdlib.h>	58	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	59	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	60	#include <stddef.h>
36		61
37	#include <stdio.h>	62	#include <stdio.h>
38		63
39	#include <assert.h>	64	#include <assert.h>
40	#include <errno.h>	65	#include <errno.h>
41	#include <sys/types.h>	66	#include <sys/types.h>
42	#include <sys/wait.h>
43	#include <sys/time.h>
44	#include <time.h>	67	#include <time.h>
45		68
		69	#include <signal.h>
		70
		71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
		74	# include <sys/wait.h>
		75	#endif
		76	/**/
		77
46	#ifndef HAVE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
47	# ifdef CLOCK_MONOTONIC
48	# define HAVE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
		80	#endif
		81
		82	#ifndef EV_USE_SELECT
		83	# define EV_USE_SELECT 1
		84	#endif
		85
		86	#ifndef EV_USE_POLL
		87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		88	#endif
		89
		90	#ifndef EV_USE_EPOLL
		91	# define EV_USE_EPOLL 0
		92	#endif
		93
		94	#ifndef EV_USE_KQUEUE
		95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
49	# endif	105	# endif
50	#endif	106	#endif
51		107
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	108	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	109	# define EV_USE_REALTIME 1
62	#endif	110	#endif
		111
		112	/**/
		113
		114	#ifndef CLOCK_MONOTONIC
		115	# undef EV_USE_MONOTONIC
		116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef CLOCK_REALTIME
		120	# undef EV_USE_REALTIME
		121	# define EV_USE_REALTIME 0
		122	#endif
		123
		124	/**/
63		125
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
67		130
68	#include "ev.h"	131	#include "ev.h"
		132
		133	#if __GNUC__ >= 3
		134	# define expect(expr,value) __builtin_expect ((expr),(value))
		135	# define inline inline
		136	#else
		137	# define expect(expr,value) (expr)
		138	# define inline static
		139	#endif
		140
		141	#define expect_false(expr) expect ((expr) != 0, 0)
		142	#define expect_true(expr) expect ((expr) != 0, 1)
		143
		144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
69		146
70	typedef struct ev_watcher *W;	147	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	148	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	149	typedef struct ev_watcher_time *WT;
73		150
74	static ev_tstamp now, diff; /* monotonic clock */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
75	ev_tstamp ev_now;
76	int ev_method;
77		152
78	static int have_monotonic; /* runtime */	153	#include "ev_win32.c"
79
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		154
84	/*****************************************************************************/	155	/*****************************************************************************/
85		156
86	ev_tstamp	157	static void (*syserr_cb)(const char *msg);
		158
		159	void ev_set_syserr_cb (void (*cb)(const char *msg))
		160	{
		161	syserr_cb = cb;
		162	}
		163
		164	static void
		165	syserr (const char *msg)
		166	{
		167	if (!msg)
		168	msg = "(libev) system error";
		169
		170	if (syserr_cb)
		171	syserr_cb (msg);
		172	else
		173	{
		174	perror (msg);
		175	abort ();
		176	}
		177	}
		178
		179	static void *(*alloc)(void *ptr, long size);
		180
		181	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		182	{
		183	alloc = cb;
		184	}
		185
		186	static void *
		187	ev_realloc (void *ptr, long size)
		188	{
		189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		190
		191	if (!ptr && size)
		192	{
		193	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		194	abort ();
		195	}
		196
		197	return ptr;
		198	}
		199
		200	#define ev_malloc(size) ev_realloc (0, (size))
		201	#define ev_free(ptr) ev_realloc ((ptr), 0)
		202
		203	/*****************************************************************************/
		204
		205	typedef struct
		206	{
		207	WL head;
		208	unsigned char events;
		209	unsigned char reify;
		210	} ANFD;
		211
		212	typedef struct
		213	{
		214	W w;
		215	int events;
		216	} ANPENDING;
		217
		218	#if EV_MULTIPLICITY
		219
		220	struct ev_loop
		221	{
		222	#define VAR(name,decl) decl;
		223	#include "ev_vars.h"
		224	#undef VAR
		225	};
		226	#include "ev_wrap.h"
		227
		228	struct ev_loop default_loop_struct;
		229	static struct ev_loop *default_loop;
		230
		231	#else
		232
		233	#define VAR(name,decl) static decl;
		234	#include "ev_vars.h"
		235	#undef VAR
		236
		237	static int default_loop;
		238
		239	#endif
		240
		241	/*****************************************************************************/
		242
		243	inline ev_tstamp
87	ev_time (void)	244	ev_time (void)
88	{	245	{
89	#if HAVE_REALTIME	246	#if EV_USE_REALTIME
90	struct timespec ts;	247	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	248	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	249	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	250	#else
94	struct timeval tv;	251	struct timeval tv;
95	gettimeofday (&tv, 0);	252	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	253	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	254	#endif
98	}	255	}
99		256
100	static ev_tstamp	257	inline ev_tstamp
101	get_clock (void)	258	get_clock (void)
102	{	259	{
103	#if HAVE_MONOTONIC	260	#if EV_USE_MONOTONIC
104	if (have_monotonic)	261	if (expect_true (have_monotonic))
105	{	262	{
106	struct timespec ts;	263	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	264	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	265	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	266	}
110	#endif	267	#endif
111		268
112	return ev_time ();	269	return ev_time ();
113	}	270	}
114		271
		272	ev_tstamp
		273	ev_now (EV_P)
		274	{
		275	return rt_now;
		276	}
		277
		278	#define array_roundsize(type,n) ((n) | 4 & ~3)
		279
115	#define array_needsize(base,cur,cnt,init) \	280	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	281	if (expect_false ((cnt) > cur)) \
117	{ \	282	{ \
118	int newcnt = cur ? cur << 1 : 16; \	283	int newcnt = cur; \
		284	do \
		285	{ \
		286	newcnt = array_roundsize (type, newcnt << 1); \
		287	} \
		288	while ((cnt) > newcnt); \
		289	\
119	base = realloc (base, sizeof (*base) * (newcnt)); \	290	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
120	init (base + cur, newcnt - cur); \	291	init (base + cur, newcnt - cur); \
121	cur = newcnt; \	292	cur = newcnt; \
122	}	293	}
		294
		295	#define array_slim(type,stem) \
		296	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		297	{ \
		298	stem ## max = array_roundsize (stem ## cnt >> 1); \
		299	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		300	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		301	}
		302
		303	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		304	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		305	#define array_free_microshit(stem) \
		306	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		307
		308	#define array_free(stem, idx) \
		309	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
123		310
124	/*****************************************************************************/	311	/*****************************************************************************/
125		312
126	typedef struct
127	{
128	struct ev_io *head;
129	unsigned char wev, rev; /* want, received event set */
130	} ANFD;
131
132	static ANFD *anfds;
133	static int anfdmax;
134
135	static int *fdchanges;
136	static int fdchangemax, fdchangecnt;
137
138	static void	313	static void
139	anfds_init (ANFD *base, int count)	314	anfds_init (ANFD *base, int count)
140	{	315	{
141	while (count--)	316	while (count--)
142	{	317	{
143	base->head = 0;	318	base->head = 0;
144	base->wev = base->rev = EV_NONE;	319	base->events = EV_NONE;
		320	base->reify = 0;
		321
145	++base;	322	++base;
146	}	323	}
147	}	324	}
148		325
149	typedef struct	326	void
		327	ev_feed_event (EV_P_ void *w, int revents)
150	{	328	{
151	W w;	329	W w_ = (W)w;
152	int events;
153	} ANPENDING;
154		330
155	static ANPENDING *pendings;	331	if (w_->pending)
156	static int pendingmax, pendingcnt;
157
158	static void
159	event (W w, int events)
160	{
161	if (w->active)
162	{	332	{
163	w->pending = ++pendingcnt;
164	array_needsize (pendings, pendingmax, pendingcnt, );
165	pendings [pendingcnt - 1].w = w;
166	pendings [pendingcnt - 1].events = events;	333	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		334	return;
167	}	335	}
168	}
169		336
		337	w_->pending = ++pendingcnt [ABSPRI (w_)];
		338	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		339	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		340	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		341	}
		342
170	static void	343	static void
		344	queue_events (EV_P_ W *events, int eventcnt, int type)
		345	{
		346	int i;
		347
		348	for (i = 0; i < eventcnt; ++i)
		349	ev_feed_event (EV_A_ events [i], type);
		350	}
		351
		352	inline void
171	fd_event (int fd, int events)	353	fd_event (EV_P_ int fd, int revents)
172	{	354	{
173	ANFD *anfd = anfds + fd;	355	ANFD *anfd = anfds + fd;
174	struct ev_io *w;	356	struct ev_io *w;
175		357
176	for (w = anfd->head; w; w = w->next)	358	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
177	{	359	{
178	int ev = w->events & events;	360	int ev = w->events & revents;
179		361
180	if (ev)	362	if (ev)
181	event ((W)w, ev);	363	ev_feed_event (EV_A_ (W)w, ev);
182	}	364	}
183	}	365	}
184		366
		367	void
		368	ev_feed_fd_event (EV_P_ int fd, int revents)
		369	{
		370	fd_event (EV_A_ fd, revents);
		371	}
		372
		373	/*****************************************************************************/
		374
185	static void	375	static void
186	queue_events (W *events, int eventcnt, int type)	376	fd_reify (EV_P)
187	{	377	{
188	int i;	378	int i;
189		379
190	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < fdchangecnt; ++i)
191	event (events [i], type);	381	{
		382	int fd = fdchanges [i];
		383	ANFD *anfd = anfds + fd;
		384	struct ev_io *w;
		385
		386	int events = 0;
		387
		388	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
		389	events |= w->events;
		390
		391	anfd->reify = 0;
		392
		393	method_modify (EV_A_ fd, anfd->events, events);
		394	anfd->events = events;
		395	}
		396
		397	fdchangecnt = 0;
		398	}
		399
		400	static void
		401	fd_change (EV_P_ int fd)
		402	{
		403	if (anfds [fd].reify)
		404	return;
		405
		406	anfds [fd].reify = 1;
		407
		408	++fdchangecnt;
		409	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
		410	fdchanges [fdchangecnt - 1] = fd;
		411	}
		412
		413	static void
		414	fd_kill (EV_P_ int fd)
		415	{
		416	struct ev_io *w;
		417
		418	while ((w = (struct ev_io *)anfds [fd].head))
		419	{
		420	ev_io_stop (EV_A_ w);
		421	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		422	}
		423	}
		424
		425	static int
		426	fd_valid (int fd)
		427	{
		428	#ifdef WIN32
		429	return !!win32_get_osfhandle (fd);
		430	#else
		431	return fcntl (fd, F_GETFD) != -1;
		432	#endif
192	}	433	}
193		434
194	/* called on EBADF to verify fds */	435	/* called on EBADF to verify fds */
195	static void	436	static void
196	fd_recheck ()	437	fd_ebadf (EV_P)
197	{	438	{
198	int fd;	439	int fd;
199		440
200	for (fd = 0; fd < anfdmax; ++fd)	441	for (fd = 0; fd < anfdmax; ++fd)
201	if (anfds [fd].wev)	442	if (anfds [fd].events)
202	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	443	if (!fd_valid (fd) == -1 && errno == EBADF)
203	while (anfds [fd].head)	444	fd_kill (EV_A_ fd);
204	evio_stop (anfds [fd].head);	445	}
		446
		447	/* called on ENOMEM in select/poll to kill some fds and retry */
		448	static void
		449	fd_enomem (EV_P)
		450	{
		451	int fd;
		452
		453	for (fd = anfdmax; fd--; )
		454	if (anfds [fd].events)
		455	{
		456	fd_kill (EV_A_ fd);
		457	return;
		458	}
		459	}
		460
		461	/* usually called after fork if method needs to re-arm all fds from scratch */
		462	static void
		463	fd_rearm_all (EV_P)
		464	{
		465	int fd;
		466
		467	/* this should be highly optimised to not do anything but set a flag */
		468	for (fd = 0; fd < anfdmax; ++fd)
		469	if (anfds [fd].events)
		470	{
		471	anfds [fd].events = 0;
		472	fd_change (EV_A_ fd);
		473	}
205	}	474	}
206		475
207	/*****************************************************************************/	476	/*****************************************************************************/
208		477
209	static struct ev_timer **timers;
210	static int timermax, timercnt;
211
212	static struct ev_periodic **periodics;
213	static int periodicmax, periodiccnt;
214
215	static void	478	static void
216	upheap (WT *timers, int k)	479	upheap (WT *heap, int k)
217	{	480	{
218	WT w = timers [k];	481	WT w = heap [k];
219		482
220	while (k && timers [k >> 1]->at > w->at)	483	while (k && heap [k >> 1]->at > w->at)
221	{	484	{
222	timers [k] = timers [k >> 1];	485	heap [k] = heap [k >> 1];
223	timers [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
224	k >>= 1;	487	k >>= 1;
225	}	488	}
226		489
227	timers [k] = w;	490	heap [k] = w;
228	timers [k]->active = k + 1;	491	((W)heap [k])->active = k + 1;
229		492
230	}	493	}
231		494
232	static void	495	static void
233	downheap (WT *timers, int N, int k)	496	downheap (WT *heap, int N, int k)
234	{	497	{
235	WT w = timers [k];	498	WT w = heap [k];
236		499
237	while (k < (N >> 1))	500	while (k < (N >> 1))
238	{	501	{
239	int j = k << 1;	502	int j = k << 1;
240		503
241	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	504	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
242	++j;	505	++j;
243		506
244	if (w->at <= timers [j]->at)	507	if (w->at <= heap [j]->at)
245	break;	508	break;
246		509
247	timers [k] = timers [j];	510	heap [k] = heap [j];
248	timers [k]->active = k + 1;	511	((W)heap [k])->active = k + 1;
249	k = j;	512	k = j;
250	}	513	}
251		514
252	timers [k] = w;	515	heap [k] = w;
253	timers [k]->active = k + 1;	516	((W)heap [k])->active = k + 1;
254	}	517	}
255		518
256	/*****************************************************************************/	519	/*****************************************************************************/
257		520
258	typedef struct	521	typedef struct
259	{	522	{
260	struct ev_signal *head;	523	WL head;
261	sig_atomic_t gotsig;	524	sig_atomic_t volatile gotsig;
262	} ANSIG;	525	} ANSIG;
263		526
264	static ANSIG *signals;	527	static ANSIG *signals;
265	static int signalmax;	528	static int signalmax;
266		529
267	static int sigpipe [2];	530	static int sigpipe [2];
268	static sig_atomic_t gotsig;	531	static sig_atomic_t volatile gotsig;
269	static struct ev_io sigev;	532	static struct ev_io sigev;
270		533
271	static void	534	static void
272	signals_init (ANSIG *base, int count)	535	signals_init (ANSIG *base, int count)
273	{	536	{
274	while (count--)	537	while (count--)
275	{	538	{
276	base->head = 0;	539	base->head = 0;
277	base->gotsig = 0;	540	base->gotsig = 0;
		541
278	++base;	542	++base;
279	}	543	}
280	}	544	}
281		545
282	static void	546	static void
283	sighandler (int signum)	547	sighandler (int signum)
284	{	548	{
		549	#if WIN32
		550	signal (signum, sighandler);
		551	#endif
		552
285	signals [signum - 1].gotsig = 1;	553	signals [signum - 1].gotsig = 1;
286		554
287	if (!gotsig)	555	if (!gotsig)
288	{	556	{
		557	int old_errno = errno;
289	gotsig = 1;	558	gotsig = 1;
		559	#ifdef WIN32
		560	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		561	#else
290	write (sigpipe [1], &gotsig, 1);	562	write (sigpipe [1], &signum, 1);
		563	#endif
		564	errno = old_errno;
291	}	565	}
292	}	566	}
293		567
		568	void
		569	ev_feed_signal_event (EV_P_ int signum)
		570	{
		571	WL w;
		572
		573	#if EV_MULTIPLICITY
		574	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		575	#endif
		576
		577	--signum;
		578
		579	if (signum < 0 || signum >= signalmax)
		580	return;
		581
		582	signals [signum].gotsig = 0;
		583
		584	for (w = signals [signum].head; w; w = w->next)
		585	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		586	}
		587
294	static void	588	static void
295	sigcb (struct ev_io *iow, int revents)	589	sigcb (EV_P_ struct ev_io *iow, int revents)
296	{	590	{
297	struct ev_signal *w;
298	int sig;	591	int signum;
299		592
		593	#ifdef WIN32
		594	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		595	#else
		596	read (sigpipe [0], &revents, 1);
		597	#endif
300	gotsig = 0;	598	gotsig = 0;
301	read (sigpipe [0], &revents, 1);
302		599
303	for (sig = signalmax; sig--; )	600	for (signum = signalmax; signum--; )
304	if (signals [sig].gotsig)	601	if (signals [signum].gotsig)
305	{	602	ev_feed_signal_event (EV_A_ signum + 1);
306	signals [sig].gotsig = 0;
307
308	for (w = signals [sig].head; w; w = w->next)
309	event ((W)w, EV_SIGNAL);
310	}
311	}	603	}
312		604
313	static void	605	static void
314	siginit (void)	606	siginit (EV_P)
315	{	607	{
		608	#ifndef WIN32
316	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	609	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
317	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	610	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
318		611
319	/* rather than sort out wether we really need nb, set it */	612	/* rather than sort out wether we really need nb, set it */
320	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	613	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
321	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	614	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		615	#endif
322		616
323	evio_set (&sigev, sigpipe [0], EV_READ);	617	ev_io_set (&sigev, sigpipe [0], EV_READ);
324	evio_start (&sigev);	618	ev_io_start (EV_A_ &sigev);
		619	ev_unref (EV_A); /* child watcher should not keep loop alive */
325	}	620	}
326		621
327	/*****************************************************************************/	622	/*****************************************************************************/
328		623
329	static struct ev_idle **idles;
330	static int idlemax, idlecnt;
331
332	static struct ev_prepare **prepares;
333	static int preparemax, preparecnt;
334
335	static struct ev_check **checks;
336	static int checkmax, checkcnt;
337
338	/*****************************************************************************/
339
340	static struct ev_child *childs [PID_HASHSIZE];	624	static struct ev_child *childs [PID_HASHSIZE];
		625
		626	#ifndef WIN32
		627
341	static struct ev_signal childev;	628	static struct ev_signal childev;
342		629
343	#ifndef WCONTINUED	630	#ifndef WCONTINUED
344	# define WCONTINUED 0	631	# define WCONTINUED 0
345	#endif	632	#endif
346		633
347	static void	634	static void
348	childcb (struct ev_signal *sw, int revents)	635	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
349	{	636	{
350	struct ev_child *w;	637	struct ev_child *w;
		638
		639	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		640	if (w->pid == pid || !w->pid)
		641	{
		642	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		643	w->rpid = pid;
		644	w->rstatus = status;
		645	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		646	}
		647	}
		648
		649	static void
		650	childcb (EV_P_ struct ev_signal *sw, int revents)
		651	{
351	int pid, status;	652	int pid, status;
352		653
353	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	654	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
354	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	655	{
355	if (w->pid == pid || w->pid == -1)	656	/* make sure we are called again until all childs have been reaped */
		657	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		658
		659	child_reap (EV_A_ sw, pid, pid, status);
		660	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		661	}
		662	}
		663
		664	#endif
		665
		666	/*****************************************************************************/
		667
		668	#if EV_USE_KQUEUE
		669	# include "ev_kqueue.c"
		670	#endif
		671	#if EV_USE_EPOLL
		672	# include "ev_epoll.c"
		673	#endif
		674	#if EV_USE_POLL
		675	# include "ev_poll.c"
		676	#endif
		677	#if EV_USE_SELECT
		678	# include "ev_select.c"
		679	#endif
		680
		681	int
		682	ev_version_major (void)
		683	{
		684	return EV_VERSION_MAJOR;
		685	}
		686
		687	int
		688	ev_version_minor (void)
		689	{
		690	return EV_VERSION_MINOR;
		691	}
		692
		693	/* return true if we are running with elevated privileges and should ignore env variables */
		694	static int
		695	enable_secure (void)
		696	{
		697	#ifdef WIN32
		698	return 0;
		699	#else
		700	return getuid () != geteuid ()
		701	|| getgid () != getegid ();
		702	#endif
		703	}
		704
		705	int
		706	ev_method (EV_P)
		707	{
		708	return method;
		709	}
		710
		711	static void
		712	loop_init (EV_P_ int methods)
		713	{
		714	if (!method)
		715	{
		716	#if EV_USE_MONOTONIC
		717	{
		718	struct timespec ts;
		719	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		720	have_monotonic = 1;
		721	}
		722	#endif
		723
		724	rt_now = ev_time ();
		725	mn_now = get_clock ();
		726	now_floor = mn_now;
		727	rtmn_diff = rt_now - mn_now;
		728
		729	if (methods == EVMETHOD_AUTO)
		730	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		731	methods = atoi (getenv ("LIBEV_METHODS"));
		732	else
		733	methods = EVMETHOD_ANY;
		734
		735	method = 0;
		736	#if EV_USE_WIN32
		737	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		738	#endif
		739	#if EV_USE_KQUEUE
		740	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		741	#endif
		742	#if EV_USE_EPOLL
		743	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		744	#endif
		745	#if EV_USE_POLL
		746	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		747	#endif
		748	#if EV_USE_SELECT
		749	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
		750	#endif
		751
		752	ev_watcher_init (&sigev, sigcb);
		753	ev_set_priority (&sigev, EV_MAXPRI);
		754	}
		755	}
		756
		757	void
		758	loop_destroy (EV_P)
		759	{
		760	int i;
		761
		762	#if EV_USE_WIN32
		763	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		764	#endif
		765	#if EV_USE_KQUEUE
		766	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		767	#endif
		768	#if EV_USE_EPOLL
		769	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		770	#endif
		771	#if EV_USE_POLL
		772	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		773	#endif
		774	#if EV_USE_SELECT
		775	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		776	#endif
		777
		778	for (i = NUMPRI; i--; )
		779	array_free (pending, [i]);
		780
		781	/* have to use the microsoft-never-gets-it-right macro */
		782	array_free_microshit (fdchange);
		783	array_free_microshit (timer);
		784	array_free_microshit (periodic);
		785	array_free_microshit (idle);
		786	array_free_microshit (prepare);
		787	array_free_microshit (check);
		788
		789	method = 0;
		790	}
		791
		792	static void
		793	loop_fork (EV_P)
		794	{
		795	#if EV_USE_EPOLL
		796	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		797	#endif
		798	#if EV_USE_KQUEUE
		799	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		800	#endif
		801
		802	if (ev_is_active (&sigev))
		803	{
		804	/* default loop */
		805
		806	ev_ref (EV_A);
		807	ev_io_stop (EV_A_ &sigev);
		808	close (sigpipe [0]);
		809	close (sigpipe [1]);
		810
		811	while (pipe (sigpipe))
		812	syserr ("(libev) error creating pipe");
		813
		814	siginit (EV_A);
		815	}
		816
		817	postfork = 0;
		818	}
		819
		820	#if EV_MULTIPLICITY
		821	struct ev_loop *
		822	ev_loop_new (int methods)
		823	{
		824	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		825
		826	memset (loop, 0, sizeof (struct ev_loop));
		827
		828	loop_init (EV_A_ methods);
		829
		830	if (ev_method (EV_A))
		831	return loop;
		832
		833	return 0;
		834	}
		835
		836	void
		837	ev_loop_destroy (EV_P)
		838	{
		839	loop_destroy (EV_A);
		840	ev_free (loop);
		841	}
		842
		843	void
		844	ev_loop_fork (EV_P)
		845	{
		846	postfork = 1;
		847	}
		848
		849	#endif
		850
		851	#if EV_MULTIPLICITY
		852	struct ev_loop *
		853	#else
		854	int
		855	#endif
		856	ev_default_loop (int methods)
		857	{
		858	if (sigpipe [0] == sigpipe [1])
		859	if (pipe (sigpipe))
		860	return 0;
		861
		862	if (!default_loop)
		863	{
		864	#if EV_MULTIPLICITY
		865	struct ev_loop *loop = default_loop = &default_loop_struct;
		866	#else
		867	default_loop = 1;
		868	#endif
		869
		870	loop_init (EV_A_ methods);
		871
		872	if (ev_method (EV_A))
356	{	873	{
357	w->status = status;	874	siginit (EV_A);
358	event ((W)w, EV_CHILD);	875
		876	#ifndef WIN32
		877	ev_signal_init (&childev, childcb, SIGCHLD);
		878	ev_set_priority (&childev, EV_MAXPRI);
		879	ev_signal_start (EV_A_ &childev);
		880	ev_unref (EV_A); /* child watcher should not keep loop alive */
		881	#endif
359	}	882	}
		883	else
		884	default_loop = 0;
		885	}
		886
		887	return default_loop;
		888	}
		889
		890	void
		891	ev_default_destroy (void)
		892	{
		893	#if EV_MULTIPLICITY
		894	struct ev_loop *loop = default_loop;
		895	#endif
		896
		897	#ifndef WIN32
		898	ev_ref (EV_A); /* child watcher */
		899	ev_signal_stop (EV_A_ &childev);
		900	#endif
		901
		902	ev_ref (EV_A); /* signal watcher */
		903	ev_io_stop (EV_A_ &sigev);
		904
		905	close (sigpipe [0]); sigpipe [0] = 0;
		906	close (sigpipe [1]); sigpipe [1] = 0;
		907
		908	loop_destroy (EV_A);
		909	}
		910
		911	void
		912	ev_default_fork (void)
		913	{
		914	#if EV_MULTIPLICITY
		915	struct ev_loop *loop = default_loop;
		916	#endif
		917
		918	if (method)
		919	postfork = 1;
360	}	920	}
361		921
362	/*****************************************************************************/	922	/*****************************************************************************/
363		923
364	#if HAVE_EPOLL	924	static int
365	# include "ev_epoll.c"	925	any_pending (EV_P)
366	#endif
367	#if HAVE_SELECT
368	# include "ev_select.c"
369	#endif
370
371	int ev_init (int flags)
372	{	926	{
373	#if HAVE_MONOTONIC	927	int pri;
374	{
375	struct timespec ts;
376	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
377	have_monotonic = 1;
378	}
379	#endif
380		928
381	ev_now = ev_time ();	929	for (pri = NUMPRI; pri--; )
382	now = get_clock ();	930	if (pendingcnt [pri])
383	diff = ev_now - now;	931	return 1;
384		932
385	if (pipe (sigpipe))
386	return 0;	933	return 0;
387
388	ev_method = EVMETHOD_NONE;
389	#if HAVE_EPOLL
390	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
391	#endif
392	#if HAVE_SELECT
393	if (ev_method == EVMETHOD_NONE) select_init (flags);
394	#endif
395
396	if (ev_method)
397	{
398	evw_init (&sigev, sigcb);
399	siginit ();
400
401	evsignal_init (&childev, childcb, SIGCHLD);
402	evsignal_start (&childev);
403	}
404
405	return ev_method;
406	}	934	}
407		935
408	/*****************************************************************************/
409
410	void ev_prefork (void)
411	{
412	/* nop */
413	}
414
415	void ev_postfork_parent (void)
416	{
417	/* nop */
418	}
419
420	void ev_postfork_child (void)
421	{
422	#if HAVE_EPOLL
423	if (ev_method == EVMETHOD_EPOLL)
424	epoll_postfork_child ();
425	#endif
426
427	evio_stop (&sigev);
428	close (sigpipe [0]);
429	close (sigpipe [1]);
430	pipe (sigpipe);
431	siginit ();
432	}
433
434	/*****************************************************************************/
435
436	static void	936	static void
437	fd_reify (void)	937	call_pending (EV_P)
438	{	938	{
439	int i;	939	int pri;
440		940
441	for (i = 0; i < fdchangecnt; ++i)	941	for (pri = NUMPRI; pri--; )
442	{	942	while (pendingcnt [pri])
443	int fd = fdchanges [i];
444	ANFD *anfd = anfds + fd;
445	struct ev_io *w;
446
447	int wev = 0;
448
449	for (w = anfd->head; w; w = w->next)
450	wev |= w->events;
451
452	if (anfd->wev != wev)
453	{	943	{
454	method_modify (fd, anfd->wev, wev);
455	anfd->wev = wev;
456	}
457	}
458
459	fdchangecnt = 0;
460	}
461
462	static void
463	call_pending ()
464	{
465	while (pendingcnt)
466	{
467	ANPENDING *p = pendings + --pendingcnt;	944	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
468		945
469	if (p->w)	946	if (p->w)
470	{	947	{
471	p->w->pending = 0;	948	p->w->pending = 0;
472	p->w->cb (p->w, p->events);	949	p->w->cb (EV_A_ p->w, p->events);
473	}	950	}
474	}	951	}
475	}	952	}
476		953
477	static void	954	static void
478	timers_reify ()	955	timers_reify (EV_P)
479	{	956	{
480	while (timercnt && timers [0]->at <= now)	957	while (timercnt && ((WT)timers [0])->at <= mn_now)
481	{	958	{
482	struct ev_timer *w = timers [0];	959	struct ev_timer *w = timers [0];
483		960
484	event ((W)w, EV_TIMEOUT);	961	assert (("inactive timer on timer heap detected", ev_is_active (w)));
485		962
486	/* first reschedule or stop timer */	963	/* first reschedule or stop timer */
487	if (w->repeat)	964	if (w->repeat)
488	{	965	{
		966	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
489	w->at = now + w->repeat;	967	((WT)w)->at = mn_now + w->repeat;
490	assert (("timer timeout in the past, negative repeat?", w->at > now));
491	downheap ((WT *)timers, timercnt, 0);	968	downheap ((WT *)timers, timercnt, 0);
492	}	969	}
493	else	970	else
494	evtimer_stop (w); /* nonrepeating: stop timer */	971	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
495	}
496	}
497		972
		973	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		974	}
		975	}
		976
498	static void	977	static void
499	periodics_reify ()	978	periodics_reify (EV_P)
500	{	979	{
501	while (periodiccnt && periodics [0]->at <= ev_now)	980	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
502	{	981	{
503	struct ev_periodic *w = periodics [0];	982	struct ev_periodic *w = periodics [0];
504		983
		984	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		985
505	/* first reschedule or stop timer */	986	/* first reschedule or stop timer */
506	if (w->interval)	987	if (w->reschedule_cb)
507	{	988	{
		989	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		990
		991	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		992	downheap ((WT *)periodics, periodiccnt, 0);
		993	}
		994	else if (w->interval)
		995	{
508	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	996	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
509	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	997	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
510	downheap ((WT *)periodics, periodiccnt, 0);	998	downheap ((WT *)periodics, periodiccnt, 0);
511	}	999	}
512	else	1000	else
513	evperiodic_stop (w); /* nonrepeating: stop timer */	1001	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
514		1002
515	event ((W)w, EV_TIMEOUT);	1003	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
516	}	1004	}
517	}	1005	}
518		1006
519	static void	1007	static void
520	periodics_reschedule (ev_tstamp diff)	1008	periodics_reschedule (EV_P)
521	{	1009	{
522	int i;	1010	int i;
523		1011
524	/* adjust periodics after time jump */	1012	/* adjust periodics after time jump */
525	for (i = 0; i < periodiccnt; ++i)	1013	for (i = 0; i < periodiccnt; ++i)
526	{	1014	{
527	struct ev_periodic *w = periodics [i];	1015	struct ev_periodic *w = periodics [i];
528		1016
		1017	if (w->reschedule_cb)
		1018	((WT)w)->at = w->reschedule_cb (w, rt_now);
529	if (w->interval)	1019	else if (w->interval)
		1020	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1021	}
		1022
		1023	/* now rebuild the heap */
		1024	for (i = periodiccnt >> 1; i--; )
		1025	downheap ((WT *)periodics, periodiccnt, i);
		1026	}
		1027
		1028	inline int
		1029	time_update_monotonic (EV_P)
		1030	{
		1031	mn_now = get_clock ();
		1032
		1033	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1034	{
		1035	rt_now = rtmn_diff + mn_now;
		1036	return 0;
		1037	}
		1038	else
		1039	{
		1040	now_floor = mn_now;
		1041	rt_now = ev_time ();
		1042	return 1;
		1043	}
		1044	}
		1045
		1046	static void
		1047	time_update (EV_P)
		1048	{
		1049	int i;
		1050
		1051	#if EV_USE_MONOTONIC
		1052	if (expect_true (have_monotonic))
		1053	{
		1054	if (time_update_monotonic (EV_A))
530	{	1055	{
531	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1056	ev_tstamp odiff = rtmn_diff;
532		1057
533	if (fabs (diff) >= 1e-4)	1058	for (i = 4; --i; ) /* loop a few times, before making important decisions */
534	{	1059	{
535	evperiodic_stop (w);	1060	rtmn_diff = rt_now - mn_now;
536	evperiodic_start (w);
537		1061
538	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1062	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1063	return; /* all is well */
		1064
		1065	rt_now = ev_time ();
		1066	mn_now = get_clock ();
		1067	now_floor = mn_now;
539	}	1068	}
		1069
		1070	periodics_reschedule (EV_A);
		1071	/* no timer adjustment, as the monotonic clock doesn't jump */
		1072	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
540	}	1073	}
541	}	1074	}
542	}	1075	else
543		1076	#endif
544	static void	1077	{
545	time_update ()
546	{
547	int i;
548
549	ev_now = ev_time ();	1078	rt_now = ev_time ();
550		1079
551	if (have_monotonic)	1080	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
552	{
553	ev_tstamp odiff = diff;
554
555	for (i = 4; --i; ) /* loop a few times, before making important decisions */
556	{	1081	{
557	now = get_clock ();
558	diff = ev_now - now;
559
560	if (fabs (odiff - diff) < MIN_TIMEJUMP)
561	return; /* all is well */
562
563	ev_now = ev_time ();
564	}
565
566	periodics_reschedule (diff - odiff);
567	/* no timer adjustment, as the monotonic clock doesn't jump */
568	}
569	else
570	{
571	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
572	{
573	periodics_reschedule (ev_now - now);	1082	periodics_reschedule (EV_A);
574		1083
575	/* adjust timers. this is easy, as the offset is the same for all */	1084	/* adjust timers. this is easy, as the offset is the same for all */
576	for (i = 0; i < timercnt; ++i)	1085	for (i = 0; i < timercnt; ++i)
577	timers [i]->at += diff;	1086	((WT)timers [i])->at += rt_now - mn_now;
578	}	1087	}
579		1088
580	now = ev_now;	1089	mn_now = rt_now;
581	}	1090	}
582	}	1091	}
583		1092
584	int ev_loop_done;	1093	void
		1094	ev_ref (EV_P)
		1095	{
		1096	++activecnt;
		1097	}
585		1098
		1099	void
		1100	ev_unref (EV_P)
		1101	{
		1102	--activecnt;
		1103	}
		1104
		1105	static int loop_done;
		1106
		1107	void
586	void ev_loop (int flags)	1108	ev_loop (EV_P_ int flags)
587	{	1109	{
588	double block;	1110	double block;
589	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	1111	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
590		1112
591	do	1113	do
592	{	1114	{
593	/* queue check watchers (and execute them) */	1115	/* queue check watchers (and execute them) */
594	if (preparecnt)	1116	if (expect_false (preparecnt))
595	{	1117	{
596	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1118	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
597	call_pending ();	1119	call_pending (EV_A);
598	}	1120	}
599		1121
		1122	/* we might have forked, so reify kernel state if necessary */
		1123	if (expect_false (postfork))
		1124	loop_fork (EV_A);
		1125
600	/* update fd-related kernel structures */	1126	/* update fd-related kernel structures */
601	fd_reify ();	1127	fd_reify (EV_A);
602		1128
603	/* calculate blocking time */	1129	/* calculate blocking time */
604		1130
605	/* we only need this for !monotonic clockor timers, but as we basically	1131	/* we only need this for !monotonic clock or timers, but as we basically
606	always have timers, we just calculate it always */	1132	always have timers, we just calculate it always */
		1133	#if EV_USE_MONOTONIC
		1134	if (expect_true (have_monotonic))
		1135	time_update_monotonic (EV_A);
		1136	else
		1137	#endif
		1138	{
607	ev_now = ev_time ();	1139	rt_now = ev_time ();
		1140	mn_now = rt_now;
		1141	}
608		1142
609	if (flags & EVLOOP_NONBLOCK || idlecnt)	1143	if (flags & EVLOOP_NONBLOCK || idlecnt)
610	block = 0.;	1144	block = 0.;
611	else	1145	else
612	{	1146	{
613	block = MAX_BLOCKTIME;	1147	block = MAX_BLOCKTIME;
614		1148
615	if (timercnt)	1149	if (timercnt)
616	{	1150	{
617	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1151	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
618	if (block > to) block = to;	1152	if (block > to) block = to;
619	}	1153	}
620		1154
621	if (periodiccnt)	1155	if (periodiccnt)
622	{	1156	{
623	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1157	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
624	if (block > to) block = to;	1158	if (block > to) block = to;
625	}	1159	}
626		1160
627	if (block < 0.) block = 0.;	1161	if (block < 0.) block = 0.;
628	}	1162	}
629		1163
630	method_poll (block);	1164	method_poll (EV_A_ block);
631		1165
632	/* update ev_now, do magic */	1166	/* update rt_now, do magic */
633	time_update ();	1167	time_update (EV_A);
634		1168
635	/* queue pending timers and reschedule them */	1169	/* queue pending timers and reschedule them */
636	timers_reify (); /* relative timers called last */	1170	timers_reify (EV_A); /* relative timers called last */
637	periodics_reify (); /* absolute timers called first */	1171	periodics_reify (EV_A); /* absolute timers called first */
638		1172
639	/* queue idle watchers unless io or timers are pending */	1173	/* queue idle watchers unless io or timers are pending */
640	if (!pendingcnt)	1174	if (idlecnt && !any_pending (EV_A))
641	queue_events ((W *)idles, idlecnt, EV_IDLE);	1175	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
642		1176
643	/* queue check watchers, to be executed first */	1177	/* queue check watchers, to be executed first */
644	if (checkcnt)	1178	if (checkcnt)
645	queue_events ((W *)checks, checkcnt, EV_CHECK);	1179	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
646		1180
647	call_pending ();	1181	call_pending (EV_A);
648	}	1182	}
649	while (!ev_loop_done);	1183	while (activecnt && !loop_done);
650		1184
651	if (ev_loop_done != 2)	1185	if (loop_done != 2)
652	ev_loop_done = 0;	1186	loop_done = 0;
		1187	}
		1188
		1189	void
		1190	ev_unloop (EV_P_ int how)
		1191	{
		1192	loop_done = how;
653	}	1193	}
654		1194
655	/*****************************************************************************/	1195	/*****************************************************************************/
656		1196
657	static void	1197	inline void
658	wlist_add (WL *head, WL elem)	1198	wlist_add (WL *head, WL elem)
659	{	1199	{
660	elem->next = *head;	1200	elem->next = *head;
661	*head = elem;	1201	*head = elem;
662	}	1202	}
663		1203
664	static void	1204	inline void
665	wlist_del (WL *head, WL elem)	1205	wlist_del (WL *head, WL elem)
666	{	1206	{
667	while (*head)	1207	while (*head)
668	{	1208	{
669	if (*head == elem)	1209	if (*head == elem)
…		…
674		1214
675	head = &(*head)->next;	1215	head = &(*head)->next;
676	}	1216	}
677	}	1217	}
678		1218
679	static void	1219	inline void
680	ev_clear (W w)	1220	ev_clear_pending (EV_P_ W w)
681	{	1221	{
682	if (w->pending)	1222	if (w->pending)
683	{	1223	{
684	pendings [w->pending - 1].w = 0;	1224	pendings [ABSPRI (w)][w->pending - 1].w = 0;
685	w->pending = 0;	1225	w->pending = 0;
686	}	1226	}
687	}	1227	}
688		1228
689	static void	1229	inline void
690	ev_start (W w, int active)	1230	ev_start (EV_P_ W w, int active)
691	{	1231	{
		1232	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1233	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1234
692	w->active = active;	1235	w->active = active;
		1236	ev_ref (EV_A);
693	}	1237	}
694		1238
695	static void	1239	inline void
696	ev_stop (W w)	1240	ev_stop (EV_P_ W w)
697	{	1241	{
		1242	ev_unref (EV_A);
698	w->active = 0;	1243	w->active = 0;
699	}	1244	}
700		1245
701	/*****************************************************************************/	1246	/*****************************************************************************/
702		1247
703	void	1248	void
704	evio_start (struct ev_io *w)	1249	ev_io_start (EV_P_ struct ev_io *w)
705	{	1250	{
		1251	int fd = w->fd;
		1252
706	if (ev_is_active (w))	1253	if (ev_is_active (w))
707	return;	1254	return;
708		1255
709	int fd = w->fd;	1256	assert (("ev_io_start called with negative fd", fd >= 0));
710		1257
711	ev_start ((W)w, 1);	1258	ev_start (EV_A_ (W)w, 1);
712	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1259	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
713	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1260	wlist_add ((WL *)&anfds[fd].head, (WL)w);
714		1261
715	++fdchangecnt;	1262	fd_change (EV_A_ fd);
716	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
717	fdchanges [fdchangecnt - 1] = fd;
718	}	1263	}
719		1264
720	void	1265	void
721	evio_stop (struct ev_io *w)	1266	ev_io_stop (EV_P_ struct ev_io *w)
722	{	1267	{
723	ev_clear ((W)w);	1268	ev_clear_pending (EV_A_ (W)w);
724	if (!ev_is_active (w))	1269	if (!ev_is_active (w))
725	return;	1270	return;
726		1271
727	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1272	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
728	ev_stop ((W)w);	1273	ev_stop (EV_A_ (W)w);
729		1274
730	++fdchangecnt;	1275	fd_change (EV_A_ w->fd);
731	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
732	fdchanges [fdchangecnt - 1] = w->fd;
733	}	1276	}
734		1277
735	void	1278	void
736	evtimer_start (struct ev_timer *w)	1279	ev_timer_start (EV_P_ struct ev_timer *w)
737	{	1280	{
738	if (ev_is_active (w))	1281	if (ev_is_active (w))
739	return;	1282	return;
740		1283
741	w->at += now;	1284	((WT)w)->at += mn_now;
742		1285
743	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1286	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
744		1287
745	ev_start ((W)w, ++timercnt);	1288	ev_start (EV_A_ (W)w, ++timercnt);
746	array_needsize (timers, timermax, timercnt, );	1289	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
747	timers [timercnt - 1] = w;	1290	timers [timercnt - 1] = w;
748	upheap ((WT *)timers, timercnt - 1);	1291	upheap ((WT *)timers, timercnt - 1);
749	}
750		1292
		1293	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1294	}
		1295
751	void	1296	void
752	evtimer_stop (struct ev_timer *w)	1297	ev_timer_stop (EV_P_ struct ev_timer *w)
753	{	1298	{
754	ev_clear ((W)w);	1299	ev_clear_pending (EV_A_ (W)w);
755	if (!ev_is_active (w))	1300	if (!ev_is_active (w))
756	return;	1301	return;
757		1302
		1303	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1304
758	if (w->active < timercnt--)	1305	if (((W)w)->active < timercnt--)
759	{	1306	{
760	timers [w->active - 1] = timers [timercnt];	1307	timers [((W)w)->active - 1] = timers [timercnt];
761	downheap ((WT *)timers, timercnt, w->active - 1);	1308	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
762	}	1309	}
763		1310
764	w->at = w->repeat;	1311	((WT)w)->at = w->repeat;
765		1312
766	ev_stop ((W)w);	1313	ev_stop (EV_A_ (W)w);
767	}	1314	}
768		1315
769	void	1316	void
770	evtimer_again (struct ev_timer *w)	1317	ev_timer_again (EV_P_ struct ev_timer *w)
771	{	1318	{
772	if (ev_is_active (w))	1319	if (ev_is_active (w))
773	{	1320	{
774	if (w->repeat)	1321	if (w->repeat)
775	{	1322	{
776	w->at = now + w->repeat;	1323	((WT)w)->at = mn_now + w->repeat;
777	downheap ((WT *)timers, timercnt, w->active - 1);	1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
778	}	1325	}
779	else	1326	else
780	evtimer_stop (w);	1327	ev_timer_stop (EV_A_ w);
781	}	1328	}
782	else if (w->repeat)	1329	else if (w->repeat)
783	evtimer_start (w);	1330	ev_timer_start (EV_A_ w);
784	}	1331	}
785		1332
786	void	1333	void
787	evperiodic_start (struct ev_periodic *w)	1334	ev_periodic_start (EV_P_ struct ev_periodic *w)
788	{	1335	{
789	if (ev_is_active (w))	1336	if (ev_is_active (w))
790	return;	1337	return;
791		1338
792	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1339	if (w->reschedule_cb)
793		1340	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1341	else if (w->interval)
		1342	{
		1343	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
794	/* this formula differs from the one in periodic_reify because we do not always round up */	1344	/* this formula differs from the one in periodic_reify because we do not always round up */
795	if (w->interval)
796	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1345	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1346	}
797		1347
798	ev_start ((W)w, ++periodiccnt);	1348	ev_start (EV_A_ (W)w, ++periodiccnt);
799	array_needsize (periodics, periodicmax, periodiccnt, );	1349	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
800	periodics [periodiccnt - 1] = w;	1350	periodics [periodiccnt - 1] = w;
801	upheap ((WT *)periodics, periodiccnt - 1);	1351	upheap ((WT *)periodics, periodiccnt - 1);
802	}
803		1352
		1353	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1354	}
		1355
804	void	1356	void
805	evperiodic_stop (struct ev_periodic *w)	1357	ev_periodic_stop (EV_P_ struct ev_periodic *w)
806	{	1358	{
807	ev_clear ((W)w);	1359	ev_clear_pending (EV_A_ (W)w);
808	if (!ev_is_active (w))	1360	if (!ev_is_active (w))
809	return;	1361	return;
810		1362
		1363	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1364
811	if (w->active < periodiccnt--)	1365	if (((W)w)->active < periodiccnt--)
812	{	1366	{
813	periodics [w->active - 1] = periodics [periodiccnt];	1367	periodics [((W)w)->active - 1] = periodics [periodiccnt];
814	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1368	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
815	}	1369	}
816		1370
817	ev_stop ((W)w);	1371	ev_stop (EV_A_ (W)w);
818	}	1372	}
819		1373
820	void	1374	void
821	evsignal_start (struct ev_signal *w)	1375	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1376	{
		1377	ev_periodic_stop (EV_A_ w);
		1378	ev_periodic_start (EV_A_ w);
		1379	}
		1380
		1381	void
		1382	ev_idle_start (EV_P_ struct ev_idle *w)
822	{	1383	{
823	if (ev_is_active (w))	1384	if (ev_is_active (w))
824	return;	1385	return;
825		1386
		1387	ev_start (EV_A_ (W)w, ++idlecnt);
		1388	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1389	idles [idlecnt - 1] = w;
		1390	}
		1391
		1392	void
		1393	ev_idle_stop (EV_P_ struct ev_idle *w)
		1394	{
		1395	ev_clear_pending (EV_A_ (W)w);
		1396	if (ev_is_active (w))
		1397	return;
		1398
		1399	idles [((W)w)->active - 1] = idles [--idlecnt];
		1400	ev_stop (EV_A_ (W)w);
		1401	}
		1402
		1403	void
		1404	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1405	{
		1406	if (ev_is_active (w))
		1407	return;
		1408
		1409	ev_start (EV_A_ (W)w, ++preparecnt);
		1410	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1411	prepares [preparecnt - 1] = w;
		1412	}
		1413
		1414	void
		1415	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1416	{
		1417	ev_clear_pending (EV_A_ (W)w);
		1418	if (ev_is_active (w))
		1419	return;
		1420
		1421	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1422	ev_stop (EV_A_ (W)w);
		1423	}
		1424
		1425	void
		1426	ev_check_start (EV_P_ struct ev_check *w)
		1427	{
		1428	if (ev_is_active (w))
		1429	return;
		1430
		1431	ev_start (EV_A_ (W)w, ++checkcnt);
		1432	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1433	checks [checkcnt - 1] = w;
		1434	}
		1435
		1436	void
		1437	ev_check_stop (EV_P_ struct ev_check *w)
		1438	{
		1439	ev_clear_pending (EV_A_ (W)w);
		1440	if (ev_is_active (w))
		1441	return;
		1442
		1443	checks [((W)w)->active - 1] = checks [--checkcnt];
		1444	ev_stop (EV_A_ (W)w);
		1445	}
		1446
		1447	#ifndef SA_RESTART
		1448	# define SA_RESTART 0
		1449	#endif
		1450
		1451	void
		1452	ev_signal_start (EV_P_ struct ev_signal *w)
		1453	{
		1454	#if EV_MULTIPLICITY
		1455	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1456	#endif
		1457	if (ev_is_active (w))
		1458	return;
		1459
		1460	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1461
826	ev_start ((W)w, 1);	1462	ev_start (EV_A_ (W)w, 1);
827	array_needsize (signals, signalmax, w->signum, signals_init);	1463	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
828	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1464	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
829		1465
830	if (!w->next)	1466	if (!((WL)w)->next)
831	{	1467	{
		1468	#if WIN32
		1469	signal (w->signum, sighandler);
		1470	#else
832	struct sigaction sa;	1471	struct sigaction sa;
833	sa.sa_handler = sighandler;	1472	sa.sa_handler = sighandler;
834	sigfillset (&sa.sa_mask);	1473	sigfillset (&sa.sa_mask);
835	sa.sa_flags = 0;	1474	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
836	sigaction (w->signum, &sa, 0);	1475	sigaction (w->signum, &sa, 0);
		1476	#endif
837	}	1477	}
838	}	1478	}
839		1479
840	void	1480	void
841	evsignal_stop (struct ev_signal *w)	1481	ev_signal_stop (EV_P_ struct ev_signal *w)
842	{	1482	{
843	ev_clear ((W)w);	1483	ev_clear_pending (EV_A_ (W)w);
844	if (!ev_is_active (w))	1484	if (!ev_is_active (w))
845	return;	1485	return;
846		1486
847	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1487	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
848	ev_stop ((W)w);	1488	ev_stop (EV_A_ (W)w);
849		1489
850	if (!signals [w->signum - 1].head)	1490	if (!signals [w->signum - 1].head)
851	signal (w->signum, SIG_DFL);	1491	signal (w->signum, SIG_DFL);
852	}	1492	}
853		1493
854	void evidle_start (struct ev_idle *w)	1494	void
		1495	ev_child_start (EV_P_ struct ev_child *w)
855	{	1496	{
		1497	#if EV_MULTIPLICITY
		1498	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1499	#endif
856	if (ev_is_active (w))	1500	if (ev_is_active (w))
857	return;	1501	return;
858		1502
859	ev_start ((W)w, ++idlecnt);	1503	ev_start (EV_A_ (W)w, 1);
860	array_needsize (idles, idlemax, idlecnt, );	1504	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
861	idles [idlecnt - 1] = w;
862	}	1505	}
863		1506
864	void evidle_stop (struct ev_idle *w)	1507	void
		1508	ev_child_stop (EV_P_ struct ev_child *w)
865	{	1509	{
866	ev_clear ((W)w);	1510	ev_clear_pending (EV_A_ (W)w);
867	if (ev_is_active (w))	1511	if (ev_is_active (w))
868	return;	1512	return;
869		1513
870	idles [w->active - 1] = idles [--idlecnt];
871	ev_stop ((W)w);
872	}
873
874	void evprepare_start (struct ev_prepare *w)
875	{
876	if (ev_is_active (w))
877	return;
878
879	ev_start ((W)w, ++preparecnt);
880	array_needsize (prepares, preparemax, preparecnt, );
881	prepares [preparecnt - 1] = w;
882	}
883
884	void evprepare_stop (struct ev_prepare *w)
885	{
886	ev_clear ((W)w);
887	if (ev_is_active (w))
888	return;
889
890	prepares [w->active - 1] = prepares [--preparecnt];
891	ev_stop ((W)w);
892	}
893
894	void evcheck_start (struct ev_check *w)
895	{
896	if (ev_is_active (w))
897	return;
898
899	ev_start ((W)w, ++checkcnt);
900	array_needsize (checks, checkmax, checkcnt, );
901	checks [checkcnt - 1] = w;
902	}
903
904	void evcheck_stop (struct ev_check *w)
905	{
906	ev_clear ((W)w);
907	if (ev_is_active (w))
908	return;
909
910	checks [w->active - 1] = checks [--checkcnt];
911	ev_stop ((W)w);
912	}
913
914	void evchild_start (struct ev_child *w)
915	{
916	if (ev_is_active (w))
917	return;
918
919	ev_start ((W)w, 1);
920	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
921	}
922
923	void evchild_stop (struct ev_child *w)
924	{
925	ev_clear ((W)w);
926	if (ev_is_active (w))
927	return;
928
929	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1514	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
930	ev_stop ((W)w);	1515	ev_stop (EV_A_ (W)w);
931	}	1516	}
932		1517
933	/*****************************************************************************/	1518	/*****************************************************************************/
934		1519
935	struct ev_once	1520	struct ev_once
…		…
939	void (*cb)(int revents, void *arg);	1524	void (*cb)(int revents, void *arg);
940	void *arg;	1525	void *arg;
941	};	1526	};
942		1527
943	static void	1528	static void
944	once_cb (struct ev_once *once, int revents)	1529	once_cb (EV_P_ struct ev_once *once, int revents)
945	{	1530	{
946	void (*cb)(int revents, void *arg) = once->cb;	1531	void (*cb)(int revents, void *arg) = once->cb;
947	void *arg = once->arg;	1532	void *arg = once->arg;
948		1533
949	evio_stop (&once->io);	1534	ev_io_stop (EV_A_ &once->io);
950	evtimer_stop (&once->to);	1535	ev_timer_stop (EV_A_ &once->to);
951	free (once);	1536	ev_free (once);
952		1537
953	cb (revents, arg);	1538	cb (revents, arg);
954	}	1539	}
955		1540
956	static void	1541	static void
957	once_cb_io (struct ev_io *w, int revents)	1542	once_cb_io (EV_P_ struct ev_io *w, int revents)
958	{	1543	{
959	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1544	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
960	}	1545	}
961		1546
962	static void	1547	static void
963	once_cb_to (struct ev_timer *w, int revents)	1548	once_cb_to (EV_P_ struct ev_timer *w, int revents)
964	{	1549	{
965	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1550	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
966	}	1551	}
967		1552
968	void	1553	void
969	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1554	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
970	{	1555	{
971	struct ev_once *once = malloc (sizeof (struct ev_once));	1556	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
972		1557
973	if (!once)	1558	if (!once)
974	cb (EV_ERROR, arg);	1559	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
975	else	1560	else
976	{	1561	{
977	once->cb = cb;	1562	once->cb = cb;
978	once->arg = arg;	1563	once->arg = arg;
979		1564
980	evw_init (&once->io, once_cb_io);	1565	ev_watcher_init (&once->io, once_cb_io);
981
982	if (fd >= 0)	1566	if (fd >= 0)
983	{	1567	{
984	evio_set (&once->io, fd, events);	1568	ev_io_set (&once->io, fd, events);
985	evio_start (&once->io);	1569	ev_io_start (EV_A_ &once->io);
986	}	1570	}
987		1571
988	evw_init (&once->to, once_cb_to);	1572	ev_watcher_init (&once->to, once_cb_to);
989
990	if (timeout >= 0.)	1573	if (timeout >= 0.)
991	{	1574	{
992	evtimer_set (&once->to, timeout, 0.);	1575	ev_timer_set (&once->to, timeout, 0.);
993	evtimer_start (&once->to);	1576	ev_timer_start (EV_A_ &once->to);
994	}	1577	}
995	}	1578	}
996	}	1579	}
997		1580
998	/*****************************************************************************/
999
1000	#if 0
1001
1002	struct ev_io wio;
1003
1004	static void
1005	sin_cb (struct ev_io *w, int revents)
1006	{
1007	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1008	}
1009
1010	static void
1011	ocb (struct ev_timer *w, int revents)
1012	{
1013	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1014	evtimer_stop (w);
1015	evtimer_start (w);
1016	}
1017
1018	static void
1019	scb (struct ev_signal *w, int revents)
1020	{
1021	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1022	evio_stop (&wio);
1023	evio_start (&wio);
1024	}
1025
1026	static void
1027	gcb (struct ev_signal *w, int revents)
1028	{
1029	fprintf (stderr, "generic %x\n", revents);
1030
1031	}
1032
1033	int main (void)
1034	{
1035	ev_init (0);
1036
1037	evio_init (&wio, sin_cb, 0, EV_READ);
1038	evio_start (&wio);
1039
1040	struct ev_timer t[10000];
1041
1042	#if 0
1043	int i;
1044	for (i = 0; i < 10000; ++i)
1045	{
1046	struct ev_timer *w = t + i;
1047	evw_init (w, ocb, i);
1048	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
1049	evtimer_start (w);
1050	if (drand48 () < 0.5)
1051	evtimer_stop (w);
1052	}
1053	#endif
1054
1055	struct ev_timer t1;
1056	evtimer_init (&t1, ocb, 5, 10);
1057	evtimer_start (&t1);
1058
1059	struct ev_signal sig;
1060	evsignal_init (&sig, scb, SIGQUIT);
1061	evsignal_start (&sig);
1062
1063	struct ev_check cw;
1064	evcheck_init (&cw, gcb);
1065	evcheck_start (&cw);
1066
1067	struct ev_idle iw;
1068	evidle_init (&iw, gcb);
1069	evidle_start (&iw);
1070
1071	ev_loop (0);
1072
1073	return 0;
1074	}
1075
1076	#endif
1077
1078
1079
1080

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