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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 1.117 by ayin, Thu Nov 15 17:15:56 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_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
46	#ifndef HAVE_MONOTONIC	80	#ifndef _WIN32
47	# ifdef CLOCK_MONOTONIC	81	# include <unistd.h>
48	# define HAVE_MONOTONIC 1	82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
49	# endif	89	# endif
50	#endif	90	#endif
51		91
		92	/**/
		93
		94	#ifndef EV_USE_MONOTONIC
		95	# define EV_USE_MONOTONIC 1
		96	#endif
		97
52	#ifndef HAVE_SELECT	98	#ifndef EV_USE_SELECT
53	# define HAVE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
		101	#endif
		102
		103	#ifndef EV_USE_POLL
		104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
54	#endif	108	# endif
		109	#endif
55		110
56	#ifndef HAVE_EPOLL	111	#ifndef EV_USE_EPOLL
57	# define HAVE_EPOLL 0	112	# define EV_USE_EPOLL 0
58	#endif	113	#endif
59		114
		115	#ifndef EV_USE_KQUEUE
		116	# define EV_USE_KQUEUE 0
		117	#endif
		118
60	#ifndef HAVE_REALTIME	119	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	120	# define EV_USE_REALTIME 1
62	#endif	121	#endif
		122
		123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
		130
		131	#ifndef CLOCK_MONOTONIC
		132	# undef EV_USE_MONOTONIC
		133	# define EV_USE_MONOTONIC 0
		134	#endif
		135
		136	#ifndef CLOCK_REALTIME
		137	# undef EV_USE_REALTIME
		138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
		143	#endif
		144
		145	/**/
63		146
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		150	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
66		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
67	#include "ev.h"	155	# include "ev.h"
		156	#endif
		157
		158	#if __GNUC__ >= 3
		159	# define expect(expr,value) __builtin_expect ((expr),(value))
		160	# define inline inline
		161	#else
		162	# define expect(expr,value) (expr)
		163	# define inline static
		164	#endif
		165
		166	#define expect_false(expr) expect ((expr) != 0, 0)
		167	#define expect_true(expr) expect ((expr) != 0, 1)
		168
		169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
68		174
69	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
70	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
71	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
72		178
73	static ev_tstamp now, diff; /* monotonic clock */	179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		180
		181	#ifdef _WIN32
		182	# include "ev_win32.c"
		183	#endif
		184
		185	/*****************************************************************************/
		186
		187	static void (*syserr_cb)(const char *msg);
		188
		189	void ev_set_syserr_cb (void (*cb)(const char *msg))
		190	{
		191	syserr_cb = cb;
		192	}
		193
		194	static void
		195	syserr (const char *msg)
		196	{
		197	if (!msg)
		198	msg = "(libev) system error";
		199
		200	if (syserr_cb)
		201	syserr_cb (msg);
		202	else
		203	{
		204	perror (msg);
		205	abort ();
		206	}
		207	}
		208
		209	static void *(*alloc)(void *ptr, long size);
		210
		211	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		212	{
		213	alloc = cb;
		214	}
		215
		216	static void *
		217	ev_realloc (void *ptr, long size)
		218	{
		219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		220
		221	if (!ptr && size)
		222	{
		223	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		224	abort ();
		225	}
		226
		227	return ptr;
		228	}
		229
		230	#define ev_malloc(size) ev_realloc (0, (size))
		231	#define ev_free(ptr) ev_realloc ((ptr), 0)
		232
		233	/*****************************************************************************/
		234
		235	typedef struct
		236	{
		237	WL head;
		238	unsigned char events;
		239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
		243	} ANFD;
		244
		245	typedef struct
		246	{
		247	W w;
		248	int events;
		249	} ANPENDING;
		250
		251	#if EV_MULTIPLICITY
		252
		253	struct ev_loop
		254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
		257	#define VAR(name,decl) decl;
		258	#include "ev_vars.h"
		259	#undef VAR
		260	};
		261	#include "ev_wrap.h"
		262
		263	static struct ev_loop default_loop_struct;
		264	struct ev_loop *ev_default_loop_ptr;
		265
		266	#else
		267
74	ev_tstamp ev_now;	268	ev_tstamp ev_rt_now;
75	int ev_method;	269	#define VAR(name,decl) static decl;
		270	#include "ev_vars.h"
		271	#undef VAR
76		272
77	static int have_monotonic; /* runtime */	273	static int ev_default_loop_ptr;
78		274
79	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	275	#endif
80	static void (*method_modify)(int fd, int oev, int nev);
81	static void (*method_poll)(ev_tstamp timeout);
82		276
83	/*****************************************************************************/	277	/*****************************************************************************/
84		278
85	ev_tstamp	279	ev_tstamp
86	ev_time (void)	280	ev_time (void)
87	{	281	{
88	#if HAVE_REALTIME	282	#if EV_USE_REALTIME
89	struct timespec ts;	283	struct timespec ts;
90	clock_gettime (CLOCK_REALTIME, &ts);	284	clock_gettime (CLOCK_REALTIME, &ts);
91	return ts.tv_sec + ts.tv_nsec * 1e-9;	285	return ts.tv_sec + ts.tv_nsec * 1e-9;
92	#else	286	#else
93	struct timeval tv;	287	struct timeval tv;
94	gettimeofday (&tv, 0);	288	gettimeofday (&tv, 0);
95	return tv.tv_sec + tv.tv_usec * 1e-6;	289	return tv.tv_sec + tv.tv_usec * 1e-6;
96	#endif	290	#endif
97	}	291	}
98		292
99	static ev_tstamp	293	inline ev_tstamp
100	get_clock (void)	294	get_clock (void)
101	{	295	{
102	#if HAVE_MONOTONIC	296	#if EV_USE_MONOTONIC
103	if (have_monotonic)	297	if (expect_true (have_monotonic))
104	{	298	{
105	struct timespec ts;	299	struct timespec ts;
106	clock_gettime (CLOCK_MONOTONIC, &ts);	300	clock_gettime (CLOCK_MONOTONIC, &ts);
107	return ts.tv_sec + ts.tv_nsec * 1e-9;	301	return ts.tv_sec + ts.tv_nsec * 1e-9;
108	}	302	}
109	#endif	303	#endif
110		304
111	return ev_time ();	305	return ev_time ();
112	}	306	}
113		307
		308	#if EV_MULTIPLICITY
		309	ev_tstamp
		310	ev_now (EV_P)
		311	{
		312	return ev_rt_now;
		313	}
		314	#endif
		315
		316	#define array_roundsize(type,n) (((n) | 4) & ~3)
		317
114	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
115	if ((cnt) > cur) \	319	if (expect_false ((cnt) > cur)) \
116	{ \	320	{ \
117	int newcnt = cur ? cur << 1 : 16; \	321	int newcnt = cur; \
		322	do \
		323	{ \
		324	newcnt = array_roundsize (type, newcnt << 1); \
		325	} \
		326	while ((cnt) > newcnt); \
		327	\
118	base = realloc (base, sizeof (*base) * (newcnt)); \	328	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
119	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
120	cur = newcnt; \	330	cur = newcnt; \
121	}	331	}
		332
		333	#define array_slim(type,stem) \
		334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		335	{ \
		336	stem ## max = array_roundsize (stem ## cnt >> 1); \
		337	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		339	}
		340
		341	#define array_free(stem, idx) \
		342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
122		343
123	/*****************************************************************************/	344	/*****************************************************************************/
124		345
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	346	static void
138	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
139	{	348	{
140	while (count--)	349	while (count--)
141	{	350	{
142	base->head = 0;	351	base->head = 0;
143	base->wev = base->rev = EV_NONE;	352	base->events = EV_NONE;
		353	base->reify = 0;
		354
144	++base;	355	++base;
145	}	356	}
146	}	357	}
147		358
148	typedef struct	359	void
		360	ev_feed_event (EV_P_ void *w, int revents)
149	{	361	{
150	W w;	362	W w_ = (W)w;
151	int events;
152	} ANPENDING;
153		363
154	static ANPENDING *pendings;	364	if (w_->pending)
155	static int pendingmax, pendingcnt;
156
157	static void
158	event (W w, int events)
159	{
160	if (w->active)
161	{	365	{
162	w->pending = ++pendingcnt;
163	array_needsize (pendings, pendingmax, pendingcnt, );
164	pendings [pendingcnt - 1].w = w;
165	pendings [pendingcnt - 1].events = events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		367	return;
166	}	368	}
167	}
168		369
		370	w_->pending = ++pendingcnt [ABSPRI (w_)];
		371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		374	}
		375
169	static void	376	static void
		377	queue_events (EV_P_ W *events, int eventcnt, int type)
		378	{
		379	int i;
		380
		381	for (i = 0; i < eventcnt; ++i)
		382	ev_feed_event (EV_A_ events [i], type);
		383	}
		384
		385	inline void
170	fd_event (int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
171	{	387	{
172	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
173	struct ev_io *w;	389	struct ev_io *w;
174		390
175	for (w = anfd->head; w; w = w->next)	391	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
176	{	392	{
177	int ev = w->events & events;	393	int ev = w->events & revents;
178		394
179	if (ev)	395	if (ev)
180	event ((W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
181	}	397	}
182	}	398	}
183		399
184	static void	400	void
185	queue_events (W *events, int eventcnt, int type)	401	ev_feed_fd_event (EV_P_ int fd, int revents)
186	{	402	{
187	int i;	403	fd_event (EV_A_ fd, revents);
188
189	for (i = 0; i < eventcnt; ++i)
190	event (events [i], type);
191	}	404	}
192		405
193	/*****************************************************************************/	406	/*****************************************************************************/
194		407
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	408	static void
202	upheap (WT *timers, int k)	409	fd_reify (EV_P)
203	{
204	WT w = timers [k];
205
206	while (k && timers [k >> 1]->at > w->at)
207	{
208	timers [k] = timers [k >> 1];
209	timers [k]->active = k + 1;
210	k >>= 1;
211	}
212
213	timers [k] = w;
214	timers [k]->active = k + 1;
215
216	}
217
218	static void
219	downheap (WT *timers, int N, int k)
220	{
221	WT w = timers [k];
222
223	while (k < (N >> 1))
224	{
225	int j = k << 1;
226
227	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
228	++j;
229
230	if (w->at <= timers [j]->at)
231	break;
232
233	timers [k] = timers [j];
234	timers [k]->active = k + 1;
235	k = j;
236	}
237
238	timers [k] = w;
239	timers [k]->active = k + 1;
240	}
241
242	/*****************************************************************************/
243
244	typedef struct
245	{
246	struct ev_signal *head;
247	sig_atomic_t gotsig;
248	} ANSIG;
249
250	static ANSIG *signals;
251	static int signalmax;
252
253	static int sigpipe [2];
254	static sig_atomic_t gotsig;
255	static struct ev_io sigev;
256
257	static void
258	signals_init (ANSIG *base, int count)
259	{
260	while (count--)
261	{
262	base->head = 0;
263	base->gotsig = 0;
264	++base;
265	}
266	}
267
268	static void
269	sighandler (int signum)
270	{
271	signals [signum - 1].gotsig = 1;
272
273	if (!gotsig)
274	{
275	gotsig = 1;
276	write (sigpipe [1], &gotsig, 1);
277	}
278	}
279
280	static void
281	sigcb (struct ev_io *iow, int revents)
282	{
283	struct ev_signal *w;
284	int sig;
285
286	gotsig = 0;
287	read (sigpipe [0], &revents, 1);
288
289	for (sig = signalmax; sig--; )
290	if (signals [sig].gotsig)
291	{
292	signals [sig].gotsig = 0;
293
294	for (w = signals [sig].head; w; w = w->next)
295	event ((W)w, EV_SIGNAL);
296	}
297	}
298
299	static void
300	siginit (void)
301	{
302	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
303	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
304
305	/* rather than sort out wether we really need nb, set it */
306	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
307	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
308
309	evio_set (&sigev, sigpipe [0], EV_READ);
310	evio_start (&sigev);
311	}
312
313	/*****************************************************************************/
314
315	static struct ev_idle **idles;
316	static int idlemax, idlecnt;
317
318	static struct ev_check **checks;
319	static int checkmax, checkcnt;
320
321	/*****************************************************************************/
322
323	#if HAVE_EPOLL
324	# include "ev_epoll.c"
325	#endif
326	#if HAVE_SELECT
327	# include "ev_select.c"
328	#endif
329
330	int ev_init (int flags)
331	{
332	#if HAVE_MONOTONIC
333	{
334	struct timespec ts;
335	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
336	have_monotonic = 1;
337	}
338	#endif
339
340	ev_now = ev_time ();
341	now = get_clock ();
342	diff = ev_now - now;
343
344	if (pipe (sigpipe))
345	return 0;
346
347	ev_method = EVMETHOD_NONE;
348	#if HAVE_EPOLL
349	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
350	#endif
351	#if HAVE_SELECT
352	if (ev_method == EVMETHOD_NONE) select_init (flags);
353	#endif
354
355	if (ev_method)
356	{
357	evw_init (&sigev, sigcb);
358	siginit ();
359	}
360
361	return ev_method;
362	}
363
364	/*****************************************************************************/
365
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
393	fd_reify (void)
394	{	410	{
395	int i;	411	int i;
396		412
397	for (i = 0; i < fdchangecnt; ++i)	413	for (i = 0; i < fdchangecnt; ++i)
398	{	414	{
399	int fd = fdchanges [i];	415	int fd = fdchanges [i];
400	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
401	struct ev_io *w;	417	struct ev_io *w;
402		418
403	int wev = 0;	419	int events = 0;
404		420
405	for (w = anfd->head; w; w = w->next)	421	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
406	wev |= w->events;	422	events |= w->events;
407		423
408	if (anfd->wev != wev)	424	#if EV_SELECT_IS_WINSOCKET
		425	if (events)
409	{	426	{
410	method_modify (fd, anfd->wev, wev);	427	unsigned long argp;
411	anfd->wev = wev;	428	anfd->handle = _get_osfhandle (fd);
		429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
412	}	430	}
		431	#endif
		432
		433	anfd->reify = 0;
		434
		435	method_modify (EV_A_ fd, anfd->events, events);
		436	anfd->events = events;
413	}	437	}
414		438
415	fdchangecnt = 0;	439	fdchangecnt = 0;
416	}	440	}
417		441
418	static void	442	static void
419	call_pending ()	443	fd_change (EV_P_ int fd)
		444	{
		445	if (anfds [fd].reify)
		446	return;
		447
		448	anfds [fd].reify = 1;
		449
		450	++fdchangecnt;
		451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
		452	fdchanges [fdchangecnt - 1] = fd;
		453	}
		454
		455	static void
		456	fd_kill (EV_P_ int fd)
		457	{
		458	struct ev_io *w;
		459
		460	while ((w = (struct ev_io *)anfds [fd].head))
		461	{
		462	ev_io_stop (EV_A_ w);
		463	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		464	}
		465	}
		466
		467	static int
		468	fd_valid (int fd)
		469	{
		470	#ifdef _WIN32
		471	return _get_osfhandle (fd) != -1;
		472	#else
		473	return fcntl (fd, F_GETFD) != -1;
		474	#endif
		475	}
		476
		477	/* called on EBADF to verify fds */
		478	static void
		479	fd_ebadf (EV_P)
		480	{
		481	int fd;
		482
		483	for (fd = 0; fd < anfdmax; ++fd)
		484	if (anfds [fd].events)
		485	if (!fd_valid (fd) == -1 && errno == EBADF)
		486	fd_kill (EV_A_ fd);
		487	}
		488
		489	/* called on ENOMEM in select/poll to kill some fds and retry */
		490	static void
		491	fd_enomem (EV_P)
		492	{
		493	int fd;
		494
		495	for (fd = anfdmax; fd--; )
		496	if (anfds [fd].events)
		497	{
		498	fd_kill (EV_A_ fd);
		499	return;
		500	}
		501	}
		502
		503	/* usually called after fork if method needs to re-arm all fds from scratch */
		504	static void
		505	fd_rearm_all (EV_P)
		506	{
		507	int fd;
		508
		509	/* this should be highly optimised to not do anything but set a flag */
		510	for (fd = 0; fd < anfdmax; ++fd)
		511	if (anfds [fd].events)
		512	{
		513	anfds [fd].events = 0;
		514	fd_change (EV_A_ fd);
		515	}
		516	}
		517
		518	/*****************************************************************************/
		519
		520	static void
		521	upheap (WT *heap, int k)
		522	{
		523	WT w = heap [k];
		524
		525	while (k && heap [k >> 1]->at > w->at)
		526	{
		527	heap [k] = heap [k >> 1];
		528	((W)heap [k])->active = k + 1;
		529	k >>= 1;
		530	}
		531
		532	heap [k] = w;
		533	((W)heap [k])->active = k + 1;
		534
		535	}
		536
		537	static void
		538	downheap (WT *heap, int N, int k)
		539	{
		540	WT w = heap [k];
		541
		542	while (k < (N >> 1))
		543	{
		544	int j = k << 1;
		545
		546	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
		547	++j;
		548
		549	if (w->at <= heap [j]->at)
		550	break;
		551
		552	heap [k] = heap [j];
		553	((W)heap [k])->active = k + 1;
		554	k = j;
		555	}
		556
		557	heap [k] = w;
		558	((W)heap [k])->active = k + 1;
		559	}
		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
		566	}
		567
		568	/*****************************************************************************/
		569
		570	typedef struct
		571	{
		572	WL head;
		573	sig_atomic_t volatile gotsig;
		574	} ANSIG;
		575
		576	static ANSIG *signals;
		577	static int signalmax;
		578
		579	static int sigpipe [2];
		580	static sig_atomic_t volatile gotsig;
		581	static struct ev_io sigev;
		582
		583	static void
		584	signals_init (ANSIG *base, int count)
		585	{
		586	while (count--)
		587	{
		588	base->head = 0;
		589	base->gotsig = 0;
		590
		591	++base;
		592	}
		593	}
		594
		595	static void
		596	sighandler (int signum)
		597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
		602	signals [signum - 1].gotsig = 1;
		603
		604	if (!gotsig)
		605	{
		606	int old_errno = errno;
		607	gotsig = 1;
		608	write (sigpipe [1], &signum, 1);
		609	errno = old_errno;
		610	}
		611	}
		612
		613	void
		614	ev_feed_signal_event (EV_P_ int signum)
		615	{
		616	WL w;
		617
		618	#if EV_MULTIPLICITY
		619	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		620	#endif
		621
		622	--signum;
		623
		624	if (signum < 0 || signum >= signalmax)
		625	return;
		626
		627	signals [signum].gotsig = 0;
		628
		629	for (w = signals [signum].head; w; w = w->next)
		630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		631	}
		632
		633	static void
		634	sigcb (EV_P_ struct ev_io *iow, int revents)
		635	{
		636	int signum;
		637
		638	read (sigpipe [0], &revents, 1);
		639	gotsig = 0;
		640
		641	for (signum = signalmax; signum--; )
		642	if (signals [signum].gotsig)
		643	ev_feed_signal_event (EV_A_ signum + 1);
		644	}
		645
		646	inline void
		647	fd_intern (int fd)
		648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
		653	fcntl (fd, F_SETFD, FD_CLOEXEC);
		654	fcntl (fd, F_SETFL, O_NONBLOCK);
		655	#endif
		656	}
		657
		658	static void
		659	siginit (EV_P)
		660	{
		661	fd_intern (sigpipe [0]);
		662	fd_intern (sigpipe [1]);
		663
		664	ev_io_set (&sigev, sigpipe [0], EV_READ);
		665	ev_io_start (EV_A_ &sigev);
		666	ev_unref (EV_A); /* child watcher should not keep loop alive */
		667	}
		668
		669	/*****************************************************************************/
		670
		671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
		675	static struct ev_signal childev;
		676
		677	#ifndef WCONTINUED
		678	# define WCONTINUED 0
		679	#endif
		680
		681	static void
		682	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
		683	{
		684	struct ev_child *w;
		685
		686	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		687	if (w->pid == pid || !w->pid)
		688	{
		689	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		690	w->rpid = pid;
		691	w->rstatus = status;
		692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		693	}
		694	}
		695
		696	static void
		697	childcb (EV_P_ struct ev_signal *sw, int revents)
		698	{
		699	int pid, status;
		700
		701	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
		702	{
		703	/* make sure we are called again until all childs have been reaped */
		704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		705
		706	child_reap (EV_A_ sw, pid, pid, status);
		707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		708	}
		709	}
		710
		711	#endif
		712
		713	/*****************************************************************************/
		714
		715	#if EV_USE_KQUEUE
		716	# include "ev_kqueue.c"
		717	#endif
		718	#if EV_USE_EPOLL
		719	# include "ev_epoll.c"
		720	#endif
		721	#if EV_USE_POLL
		722	# include "ev_poll.c"
		723	#endif
		724	#if EV_USE_SELECT
		725	# include "ev_select.c"
		726	#endif
		727
		728	int
		729	ev_version_major (void)
		730	{
		731	return EV_VERSION_MAJOR;
		732	}
		733
		734	int
		735	ev_version_minor (void)
		736	{
		737	return EV_VERSION_MINOR;
		738	}
		739
		740	/* return true if we are running with elevated privileges and should ignore env variables */
		741	static int
		742	enable_secure (void)
		743	{
		744	#ifdef _WIN32
		745	return 0;
		746	#else
		747	return getuid () != geteuid ()
		748	|| getgid () != getegid ();
		749	#endif
		750	}
		751
		752	unsigned int
		753	ev_method (EV_P)
		754	{
		755	return method;
		756	}
		757
		758	static void
		759	loop_init (EV_P_ unsigned int flags)
		760	{
		761	if (!method)
		762	{
		763	#if EV_USE_MONOTONIC
		764	{
		765	struct timespec ts;
		766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		767	have_monotonic = 1;
		768	}
		769	#endif
		770
		771	ev_rt_now = ev_time ();
		772	mn_now = get_clock ();
		773	now_floor = mn_now;
		774	rtmn_diff = ev_rt_now - mn_now;
		775
		776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
		777	flags = atoi (getenv ("LIBEV_FLAGS"));
		778
		779	if (!(flags & 0x0000ffff))
		780	flags |= 0x0000ffff;
		781
		782	method = 0;
		783	#if EV_USE_KQUEUE
		784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		785	#endif
		786	#if EV_USE_EPOLL
		787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		788	#endif
		789	#if EV_USE_POLL
		790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
		791	#endif
		792	#if EV_USE_SELECT
		793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
		794	#endif
		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
		798	}
		799	}
		800
		801	void
		802	loop_destroy (EV_P)
420	{	803	{
421	int i;	804	int i;
422		805
423	for (i = 0; i < pendingcnt; ++i)	806	#if EV_USE_KQUEUE
		807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		808	#endif
		809	#if EV_USE_EPOLL
		810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		811	#endif
		812	#if EV_USE_POLL
		813	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		814	#endif
		815	#if EV_USE_SELECT
		816	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		817	#endif
		818
		819	for (i = NUMPRI; i--; )
		820	array_free (pending, [i]);
		821
		822	/* have to use the microsoft-never-gets-it-right macro */
		823	array_free (fdchange, EMPTY0);
		824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
		826	array_free (periodic, EMPTY0);
		827	#endif
		828	array_free (idle, EMPTY0);
		829	array_free (prepare, EMPTY0);
		830	array_free (check, EMPTY0);
		831
		832	method = 0;
		833	}
		834
		835	static void
		836	loop_fork (EV_P)
		837	{
		838	#if EV_USE_EPOLL
		839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		840	#endif
		841	#if EV_USE_KQUEUE
		842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		843	#endif
		844
		845	if (ev_is_active (&sigev))
		846	{
		847	/* default loop */
		848
		849	ev_ref (EV_A);
		850	ev_io_stop (EV_A_ &sigev);
		851	close (sigpipe [0]);
		852	close (sigpipe [1]);
		853
		854	while (pipe (sigpipe))
		855	syserr ("(libev) error creating pipe");
		856
		857	siginit (EV_A);
424	{	858	}
425	ANPENDING *p = pendings + i;
426		859
427	if (p->w)	860	postfork = 0;
		861	}
		862
		863	#if EV_MULTIPLICITY
		864	struct ev_loop *
		865	ev_loop_new (unsigned int flags)
		866	{
		867	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		868
		869	memset (loop, 0, sizeof (struct ev_loop));
		870
		871	loop_init (EV_A_ flags);
		872
		873	if (ev_method (EV_A))
		874	return loop;
		875
		876	return 0;
		877	}
		878
		879	void
		880	ev_loop_destroy (EV_P)
		881	{
		882	loop_destroy (EV_A);
		883	ev_free (loop);
		884	}
		885
		886	void
		887	ev_loop_fork (EV_P)
		888	{
		889	postfork = 1;
		890	}
		891
		892	#endif
		893
		894	#if EV_MULTIPLICITY
		895	struct ev_loop *
		896	ev_default_loop_ (unsigned int flags)
		897	#else
		898	int
		899	ev_default_loop (unsigned int flags)
		900	#endif
		901	{
		902	if (sigpipe [0] == sigpipe [1])
		903	if (pipe (sigpipe))
		904	return 0;
		905
		906	if (!ev_default_loop_ptr)
		907	{
		908	#if EV_MULTIPLICITY
		909	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		910	#else
		911	ev_default_loop_ptr = 1;
		912	#endif
		913
		914	loop_init (EV_A_ flags);
		915
		916	if (ev_method (EV_A))
428	{	917	{
429	p->w->pending = 0;	918	siginit (EV_A);
430	p->w->cb (p->w, p->events);	919
		920	#ifndef _WIN32
		921	ev_signal_init (&childev, childcb, SIGCHLD);
		922	ev_set_priority (&childev, EV_MAXPRI);
		923	ev_signal_start (EV_A_ &childev);
		924	ev_unref (EV_A); /* child watcher should not keep loop alive */
		925	#endif
431	}	926	}
		927	else
		928	ev_default_loop_ptr = 0;
		929	}
		930
		931	return ev_default_loop_ptr;
		932	}
		933
		934	void
		935	ev_default_destroy (void)
		936	{
		937	#if EV_MULTIPLICITY
		938	struct ev_loop *loop = ev_default_loop_ptr;
		939	#endif
		940
		941	#ifndef _WIN32
		942	ev_ref (EV_A); /* child watcher */
		943	ev_signal_stop (EV_A_ &childev);
		944	#endif
		945
		946	ev_ref (EV_A); /* signal watcher */
		947	ev_io_stop (EV_A_ &sigev);
		948
		949	close (sigpipe [0]); sigpipe [0] = 0;
		950	close (sigpipe [1]); sigpipe [1] = 0;
		951
		952	loop_destroy (EV_A);
		953	}
		954
		955	void
		956	ev_default_fork (void)
		957	{
		958	#if EV_MULTIPLICITY
		959	struct ev_loop *loop = ev_default_loop_ptr;
		960	#endif
		961
		962	if (method)
		963	postfork = 1;
		964	}
		965
		966	/*****************************************************************************/
		967
		968	static int
		969	any_pending (EV_P)
		970	{
		971	int pri;
		972
		973	for (pri = NUMPRI; pri--; )
		974	if (pendingcnt [pri])
		975	return 1;
		976
		977	return 0;
		978	}
		979
		980	static void
		981	call_pending (EV_P)
		982	{
		983	int pri;
		984
		985	for (pri = NUMPRI; pri--; )
		986	while (pendingcnt [pri])
		987	{
		988	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
		989
		990	if (p->w)
		991	{
		992	p->w->pending = 0;
		993	EV_CB_INVOKE (p->w, p->events);
		994	}
432	}	995	}
433
434	pendingcnt = 0;
435	}	996	}
436		997
437	static void	998	static void
438	timers_reify ()	999	timers_reify (EV_P)
439	{	1000	{
440	while (timercnt && timers [0]->at <= now)	1001	while (timercnt && ((WT)timers [0])->at <= mn_now)
441	{	1002	{
442	struct ev_timer *w = timers [0];	1003	struct ev_timer *w = timers [0];
443		1004
444	event ((W)w, EV_TIMEOUT);	1005	assert (("inactive timer on timer heap detected", ev_is_active (w)));
445		1006
446	/* first reschedule or stop timer */	1007	/* first reschedule or stop timer */
447	if (w->repeat)	1008	if (w->repeat)
448	{	1009	{
		1010	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1011
449	w->at = now + w->repeat;	1012	((WT)w)->at += w->repeat;
450	assert (("timer timeout in the past, negative repeat?", w->at > now));	1013	if (((WT)w)->at < mn_now)
		1014	((WT)w)->at = mn_now;
		1015
451	downheap ((WT *)timers, timercnt, 0);	1016	downheap ((WT *)timers, timercnt, 0);
452	}	1017	}
453	else	1018	else
454	evtimer_stop (w); /* nonrepeating: stop timer */	1019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
455	}
456	}
457		1020
		1021	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1022	}
		1023	}
		1024
		1025	#if EV_PERIODICS
458	static void	1026	static void
459	periodics_reify ()	1027	periodics_reify (EV_P)
460	{	1028	{
461	while (periodiccnt && periodics [0]->at <= ev_now)	1029	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
462	{	1030	{
463	struct ev_periodic *w = periodics [0];	1031	struct ev_periodic *w = periodics [0];
464		1032
		1033	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1034
465	/* first reschedule or stop timer */	1035	/* first reschedule or stop timer */
466	if (w->interval)	1036	if (w->reschedule_cb)
467	{	1037	{
		1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1039	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1040	downheap ((WT *)periodics, periodiccnt, 0);
		1041	}
		1042	else if (w->interval)
		1043	{
468	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1044	((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));	1045	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);	1046	downheap ((WT *)periodics, periodiccnt, 0);
471	}	1047	}
472	else	1048	else
473	evperiodic_stop (w); /* nonrepeating: stop timer */	1049	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
474		1050
475	event ((W)w, EV_TIMEOUT);	1051	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
476	}	1052	}
477	}	1053	}
478		1054
479	static void	1055	static void
480	periodics_reschedule (ev_tstamp diff)	1056	periodics_reschedule (EV_P)
481	{	1057	{
482	int i;	1058	int i;
483		1059
484	/* adjust periodics after time jump */	1060	/* adjust periodics after time jump */
485	for (i = 0; i < periodiccnt; ++i)	1061	for (i = 0; i < periodiccnt; ++i)
486	{	1062	{
487	struct ev_periodic *w = periodics [i];	1063	struct ev_periodic *w = periodics [i];
488		1064
		1065	if (w->reschedule_cb)
		1066	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
489	if (w->interval)	1067	else if (w->interval)
		1068	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1069	}
		1070
		1071	/* now rebuild the heap */
		1072	for (i = periodiccnt >> 1; i--; )
		1073	downheap ((WT *)periodics, periodiccnt, i);
		1074	}
		1075	#endif
		1076
		1077	inline int
		1078	time_update_monotonic (EV_P)
		1079	{
		1080	mn_now = get_clock ();
		1081
		1082	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1083	{
		1084	ev_rt_now = rtmn_diff + mn_now;
		1085	return 0;
		1086	}
		1087	else
		1088	{
		1089	now_floor = mn_now;
		1090	ev_rt_now = ev_time ();
		1091	return 1;
		1092	}
		1093	}
		1094
		1095	static void
		1096	time_update (EV_P)
		1097	{
		1098	int i;
		1099
		1100	#if EV_USE_MONOTONIC
		1101	if (expect_true (have_monotonic))
		1102	{
		1103	if (time_update_monotonic (EV_A))
490	{	1104	{
491	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1105	ev_tstamp odiff = rtmn_diff;
492		1106
493	if (fabs (diff) >= 1e-4)	1107	for (i = 4; --i; ) /* loop a few times, before making important decisions */
494	{	1108	{
495	evperiodic_stop (w);	1109	rtmn_diff = ev_rt_now - mn_now;
496	evperiodic_start (w);
497		1110
498	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1111	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1112	return; /* all is well */
		1113
		1114	ev_rt_now = ev_time ();
		1115	mn_now = get_clock ();
		1116	now_floor = mn_now;
499	}	1117	}
		1118
		1119	# if EV_PERIODICS
		1120	periodics_reschedule (EV_A);
		1121	# endif
		1122	/* no timer adjustment, as the monotonic clock doesn't jump */
		1123	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
500	}	1124	}
501	}	1125	}
502	}	1126	else
503		1127	#endif
504	static void	1128	{
505	time_update ()
506	{
507	int i;
508
509	ev_now = ev_time ();	1129	ev_rt_now = ev_time ();
510		1130
511	if (have_monotonic)	1131	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	{	1132	{
517	now = get_clock ();	1133	#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);	1134	periodics_reschedule (EV_A);
		1135	#endif
534		1136
535	/* adjust timers. this is easy, as the offset is the same for all */	1137	/* adjust timers. this is easy, as the offset is the same for all */
536	for (i = 0; i < timercnt; ++i)	1138	for (i = 0; i < timercnt; ++i)
537	timers [i]->at += diff;	1139	((WT)timers [i])->at += ev_rt_now - mn_now;
538	}	1140	}
539		1141
540	now = ev_now;	1142	mn_now = ev_rt_now;
541	}	1143	}
542	}	1144	}
543		1145
544	int ev_loop_done;	1146	void
		1147	ev_ref (EV_P)
		1148	{
		1149	++activecnt;
		1150	}
545		1151
		1152	void
		1153	ev_unref (EV_P)
		1154	{
		1155	--activecnt;
		1156	}
		1157
		1158	static int loop_done;
		1159
		1160	void
546	void ev_loop (int flags)	1161	ev_loop (EV_P_ int flags)
547	{	1162	{
548	double block;	1163	double block;
549	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	1164	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
550		1165
551	if (checkcnt)	1166	while (activecnt)
552	{	1167	{
553	queue_events ((W *)checks, checkcnt, EV_CHECK);	1168	/* queue check watchers (and execute them) */
		1169	if (expect_false (preparecnt))
		1170	{
		1171	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
554	call_pending ();	1172	call_pending (EV_A);
555	}	1173	}
556		1174
557	do	1175	/* we might have forked, so reify kernel state if necessary */
558	{	1176	if (expect_false (postfork))
		1177	loop_fork (EV_A);
		1178
559	/* update fd-related kernel structures */	1179	/* update fd-related kernel structures */
560	fd_reify ();	1180	fd_reify (EV_A);
561		1181
562	/* calculate blocking time */	1182	/* calculate blocking time */
563		1183
564	/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */	1184	/* we only need this for !monotonic clock or timers, but as we basically
		1185	always have timers, we just calculate it always */
		1186	#if EV_USE_MONOTONIC
		1187	if (expect_true (have_monotonic))
		1188	time_update_monotonic (EV_A);
		1189	else
		1190	#endif
		1191	{
565	ev_now = ev_time ();	1192	ev_rt_now = ev_time ();
		1193	mn_now = ev_rt_now;
		1194	}
566		1195
567	if (flags & EVLOOP_NONBLOCK || idlecnt)	1196	if (flags & EVLOOP_NONBLOCK || idlecnt)
568	block = 0.;	1197	block = 0.;
569	else	1198	else
570	{	1199	{
571	block = MAX_BLOCKTIME;	1200	block = MAX_BLOCKTIME;
572		1201
573	if (timercnt)	1202	if (timercnt)
574	{	1203	{
575	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1204	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
576	if (block > to) block = to;	1205	if (block > to) block = to;
577	}	1206	}
578		1207
		1208	#if EV_PERIODICS
579	if (periodiccnt)	1209	if (periodiccnt)
580	{	1210	{
581	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1211	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
582	if (block > to) block = to;	1212	if (block > to) block = to;
583	}	1213	}
		1214	#endif
584		1215
585	if (block < 0.) block = 0.;	1216	if (block < 0.) block = 0.;
586	}	1217	}
587		1218
588	method_poll (block);	1219	method_poll (EV_A_ block);
589		1220
590	/* update ev_now, do magic */	1221	/* update ev_rt_now, do magic */
591	time_update ();	1222	time_update (EV_A);
592		1223
593	/* queue pending timers and reschedule them */	1224	/* queue pending timers and reschedule them */
		1225	timers_reify (EV_A); /* relative timers called last */
		1226	#if EV_PERIODICS
594	periodics_reify (); /* absolute timers first */	1227	periodics_reify (EV_A); /* absolute timers called first */
595	timers_reify (); /* relative timers second */	1228	#endif
596		1229
597	/* queue idle watchers unless io or timers are pending */	1230	/* queue idle watchers unless io or timers are pending */
598	if (!pendingcnt)	1231	if (idlecnt && !any_pending (EV_A))
599	queue_events ((W *)idles, idlecnt, EV_IDLE);	1232	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
600		1233
601	/* queue check and possibly idle watchers */	1234	/* queue check watchers, to be executed first */
		1235	if (checkcnt)
602	queue_events ((W *)checks, checkcnt, EV_CHECK);	1236	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
603		1237
604	call_pending ();	1238	call_pending (EV_A);
605	}
606	while (!ev_loop_done);
607		1239
		1240	if (loop_done)
		1241	break;
		1242	}
		1243
608	if (ev_loop_done != 2)	1244	if (loop_done != 2)
609	ev_loop_done = 0;	1245	loop_done = 0;
		1246	}
		1247
		1248	void
		1249	ev_unloop (EV_P_ int how)
		1250	{
		1251	loop_done = how;
610	}	1252	}
611		1253
612	/*****************************************************************************/	1254	/*****************************************************************************/
613		1255
614	static void	1256	inline void
615	wlist_add (WL *head, WL elem)	1257	wlist_add (WL *head, WL elem)
616	{	1258	{
617	elem->next = *head;	1259	elem->next = *head;
618	*head = elem;	1260	*head = elem;
619	}	1261	}
620		1262
621	static void	1263	inline void
622	wlist_del (WL *head, WL elem)	1264	wlist_del (WL *head, WL elem)
623	{	1265	{
624	while (*head)	1266	while (*head)
625	{	1267	{
626	if (*head == elem)	1268	if (*head == elem)
…		…
631		1273
632	head = &(*head)->next;	1274	head = &(*head)->next;
633	}	1275	}
634	}	1276	}
635		1277
636	static void	1278	inline void
637	ev_clear (W w)	1279	ev_clear_pending (EV_P_ W w)
638	{	1280	{
639	if (w->pending)	1281	if (w->pending)
640	{	1282	{
641	pendings [w->pending - 1].w = 0;	1283	pendings [ABSPRI (w)][w->pending - 1].w = 0;
642	w->pending = 0;	1284	w->pending = 0;
643	}	1285	}
644	}	1286	}
645		1287
646	static void	1288	inline void
647	ev_start (W w, int active)	1289	ev_start (EV_P_ W w, int active)
648	{	1290	{
		1291	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1292	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1293
649	w->active = active;	1294	w->active = active;
		1295	ev_ref (EV_A);
650	}	1296	}
651		1297
652	static void	1298	inline void
653	ev_stop (W w)	1299	ev_stop (EV_P_ W w)
654	{	1300	{
		1301	ev_unref (EV_A);
655	w->active = 0;	1302	w->active = 0;
656	}	1303	}
657		1304
658	/*****************************************************************************/	1305	/*****************************************************************************/
659		1306
660	void	1307	void
661	evio_start (struct ev_io *w)	1308	ev_io_start (EV_P_ struct ev_io *w)
662	{	1309	{
		1310	int fd = w->fd;
		1311
663	if (ev_is_active (w))	1312	if (ev_is_active (w))
664	return;	1313	return;
665		1314
666	int fd = w->fd;	1315	assert (("ev_io_start called with negative fd", fd >= 0));
667		1316
668	ev_start ((W)w, 1);	1317	ev_start (EV_A_ (W)w, 1);
669	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1318	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
670	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1319	wlist_add ((WL *)&anfds[fd].head, (WL)w);
671		1320
672	++fdchangecnt;	1321	fd_change (EV_A_ fd);
673	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
674	fdchanges [fdchangecnt - 1] = fd;
675	}	1322	}
676		1323
677	void	1324	void
678	evio_stop (struct ev_io *w)	1325	ev_io_stop (EV_P_ struct ev_io *w)
679	{	1326	{
680	ev_clear ((W)w);	1327	ev_clear_pending (EV_A_ (W)w);
681	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
682	return;	1329	return;
683		1330
		1331	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1332
684	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1333	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
685	ev_stop ((W)w);	1334	ev_stop (EV_A_ (W)w);
686		1335
687	++fdchangecnt;	1336	fd_change (EV_A_ w->fd);
688	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
689	fdchanges [fdchangecnt - 1] = w->fd;
690	}	1337	}
691		1338
692	void	1339	void
693	evtimer_start (struct ev_timer *w)	1340	ev_timer_start (EV_P_ struct ev_timer *w)
694	{	1341	{
695	if (ev_is_active (w))	1342	if (ev_is_active (w))
696	return;	1343	return;
697		1344
698	w->at += now;	1345	((WT)w)->at += mn_now;
699		1346
700	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1347	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
701		1348
702	ev_start ((W)w, ++timercnt);	1349	ev_start (EV_A_ (W)w, ++timercnt);
703	array_needsize (timers, timermax, timercnt, );	1350	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
704	timers [timercnt - 1] = w;	1351	timers [timercnt - 1] = w;
705	upheap ((WT *)timers, timercnt - 1);	1352	upheap ((WT *)timers, timercnt - 1);
706	}
707		1353
		1354	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1355	}
		1356
708	void	1357	void
709	evtimer_stop (struct ev_timer *w)	1358	ev_timer_stop (EV_P_ struct ev_timer *w)
710	{	1359	{
711	ev_clear ((W)w);	1360	ev_clear_pending (EV_A_ (W)w);
712	if (!ev_is_active (w))	1361	if (!ev_is_active (w))
713	return;	1362	return;
714		1363
		1364	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1365
715	if (w->active < timercnt--)	1366	if (((W)w)->active < timercnt--)
716	{	1367	{
717	timers [w->active - 1] = timers [timercnt];	1368	timers [((W)w)->active - 1] = timers [timercnt];
718	downheap ((WT *)timers, timercnt, w->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
719	}	1370	}
720		1371
721	w->at = w->repeat;	1372	((WT)w)->at -= mn_now;
722		1373
723	ev_stop ((W)w);	1374	ev_stop (EV_A_ (W)w);
724	}	1375	}
725		1376
726	void	1377	void
727	evtimer_again (struct ev_timer *w)	1378	ev_timer_again (EV_P_ struct ev_timer *w)
728	{	1379	{
729	if (ev_is_active (w))	1380	if (ev_is_active (w))
730	{	1381	{
731	if (w->repeat)	1382	if (w->repeat)
732	{	1383	{
733	w->at = now + w->repeat;	1384	((WT)w)->at = mn_now + w->repeat;
734	downheap ((WT *)timers, timercnt, w->active - 1);	1385	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
735	}	1386	}
736	else	1387	else
737	evtimer_stop (w);	1388	ev_timer_stop (EV_A_ w);
738	}	1389	}
739	else if (w->repeat)	1390	else if (w->repeat)
		1391	{
		1392	w->at = w->repeat;
740	evtimer_start (w);	1393	ev_timer_start (EV_A_ w);
		1394	}
741	}	1395	}
742		1396
		1397	#if EV_PERIODICS
743	void	1398	void
744	evperiodic_start (struct ev_periodic *w)	1399	ev_periodic_start (EV_P_ struct ev_periodic *w)
745	{	1400	{
746	if (ev_is_active (w))	1401	if (ev_is_active (w))
747	return;	1402	return;
748		1403
749	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1404	if (w->reschedule_cb)
750		1405	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1406	else if (w->interval)
		1407	{
		1408	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 */	1409	/* 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;	1410	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1411	}
754		1412
755	ev_start ((W)w, ++periodiccnt);	1413	ev_start (EV_A_ (W)w, ++periodiccnt);
756	array_needsize (periodics, periodicmax, periodiccnt, );	1414	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
757	periodics [periodiccnt - 1] = w;	1415	periodics [periodiccnt - 1] = w;
758	upheap ((WT *)periodics, periodiccnt - 1);	1416	upheap ((WT *)periodics, periodiccnt - 1);
759	}
760		1417
		1418	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1419	}
		1420
761	void	1421	void
762	evperiodic_stop (struct ev_periodic *w)	1422	ev_periodic_stop (EV_P_ struct ev_periodic *w)
763	{	1423	{
764	ev_clear ((W)w);	1424	ev_clear_pending (EV_A_ (W)w);
765	if (!ev_is_active (w))	1425	if (!ev_is_active (w))
766	return;	1426	return;
767		1427
		1428	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1429
768	if (w->active < periodiccnt--)	1430	if (((W)w)->active < periodiccnt--)
769	{	1431	{
770	periodics [w->active - 1] = periodics [periodiccnt];	1432	periodics [((W)w)->active - 1] = periodics [periodiccnt];
771	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1433	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
772	}	1434	}
773		1435
774	ev_stop ((W)w);	1436	ev_stop (EV_A_ (W)w);
775	}	1437	}
776		1438
777	void	1439	void
778	evsignal_start (struct ev_signal *w)	1440	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1441	{
		1442	/* TODO: use adjustheap and recalculation */
		1443	ev_periodic_stop (EV_A_ w);
		1444	ev_periodic_start (EV_A_ w);
		1445	}
		1446	#endif
		1447
		1448	void
		1449	ev_idle_start (EV_P_ struct ev_idle *w)
779	{	1450	{
780	if (ev_is_active (w))	1451	if (ev_is_active (w))
781	return;	1452	return;
782		1453
		1454	ev_start (EV_A_ (W)w, ++idlecnt);
		1455	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1456	idles [idlecnt - 1] = w;
		1457	}
		1458
		1459	void
		1460	ev_idle_stop (EV_P_ struct ev_idle *w)
		1461	{
		1462	ev_clear_pending (EV_A_ (W)w);
		1463	if (!ev_is_active (w))
		1464	return;
		1465
		1466	idles [((W)w)->active - 1] = idles [--idlecnt];
		1467	ev_stop (EV_A_ (W)w);
		1468	}
		1469
		1470	void
		1471	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1472	{
		1473	if (ev_is_active (w))
		1474	return;
		1475
		1476	ev_start (EV_A_ (W)w, ++preparecnt);
		1477	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1478	prepares [preparecnt - 1] = w;
		1479	}
		1480
		1481	void
		1482	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1483	{
		1484	ev_clear_pending (EV_A_ (W)w);
		1485	if (!ev_is_active (w))
		1486	return;
		1487
		1488	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1489	ev_stop (EV_A_ (W)w);
		1490	}
		1491
		1492	void
		1493	ev_check_start (EV_P_ struct ev_check *w)
		1494	{
		1495	if (ev_is_active (w))
		1496	return;
		1497
		1498	ev_start (EV_A_ (W)w, ++checkcnt);
		1499	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1500	checks [checkcnt - 1] = w;
		1501	}
		1502
		1503	void
		1504	ev_check_stop (EV_P_ struct ev_check *w)
		1505	{
		1506	ev_clear_pending (EV_A_ (W)w);
		1507	if (!ev_is_active (w))
		1508	return;
		1509
		1510	checks [((W)w)->active - 1] = checks [--checkcnt];
		1511	ev_stop (EV_A_ (W)w);
		1512	}
		1513
		1514	#ifndef SA_RESTART
		1515	# define SA_RESTART 0
		1516	#endif
		1517
		1518	void
		1519	ev_signal_start (EV_P_ struct ev_signal *w)
		1520	{
		1521	#if EV_MULTIPLICITY
		1522	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1523	#endif
		1524	if (ev_is_active (w))
		1525	return;
		1526
		1527	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1528
783	ev_start ((W)w, 1);	1529	ev_start (EV_A_ (W)w, 1);
784	array_needsize (signals, signalmax, w->signum, signals_init);	1530	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
785	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1531	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
786		1532
787	if (!w->next)	1533	if (!((WL)w)->next)
788	{	1534	{
		1535	#if _WIN32
		1536	signal (w->signum, sighandler);
		1537	#else
789	struct sigaction sa;	1538	struct sigaction sa;
790	sa.sa_handler = sighandler;	1539	sa.sa_handler = sighandler;
791	sigfillset (&sa.sa_mask);	1540	sigfillset (&sa.sa_mask);
792	sa.sa_flags = 0;	1541	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
793	sigaction (w->signum, &sa, 0);	1542	sigaction (w->signum, &sa, 0);
		1543	#endif
794	}	1544	}
795	}	1545	}
796		1546
797	void	1547	void
798	evsignal_stop (struct ev_signal *w)	1548	ev_signal_stop (EV_P_ struct ev_signal *w)
799	{	1549	{
800	ev_clear ((W)w);	1550	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1551	if (!ev_is_active (w))
802	return;	1552	return;
803		1553
804	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1554	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
805	ev_stop ((W)w);	1555	ev_stop (EV_A_ (W)w);
806		1556
807	if (!signals [w->signum - 1].head)	1557	if (!signals [w->signum - 1].head)
808	signal (w->signum, SIG_DFL);	1558	signal (w->signum, SIG_DFL);
809	}	1559	}
810		1560
811	void evidle_start (struct ev_idle *w)	1561	void
		1562	ev_child_start (EV_P_ struct ev_child *w)
812	{	1563	{
		1564	#if EV_MULTIPLICITY
		1565	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1566	#endif
813	if (ev_is_active (w))	1567	if (ev_is_active (w))
814	return;	1568	return;
815		1569
816	ev_start ((W)w, ++idlecnt);	1570	ev_start (EV_A_ (W)w, 1);
817	array_needsize (idles, idlemax, idlecnt, );	1571	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
818	idles [idlecnt - 1] = w;
819	}	1572	}
820		1573
821	void evidle_stop (struct ev_idle *w)	1574	void
		1575	ev_child_stop (EV_P_ struct ev_child *w)
822	{	1576	{
823	ev_clear ((W)w);	1577	ev_clear_pending (EV_A_ (W)w);
824	if (ev_is_active (w))	1578	if (!ev_is_active (w))
825	return;	1579	return;
826		1580
827	idles [w->active - 1] = idles [--idlecnt];	1581	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
828	ev_stop ((W)w);	1582	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	}	1583	}
850		1584
851	/*****************************************************************************/	1585	/*****************************************************************************/
852		1586
853	struct ev_once	1587	struct ev_once
…		…
857	void (*cb)(int revents, void *arg);	1591	void (*cb)(int revents, void *arg);
858	void *arg;	1592	void *arg;
859	};	1593	};
860		1594
861	static void	1595	static void
862	once_cb (struct ev_once *once, int revents)	1596	once_cb (EV_P_ struct ev_once *once, int revents)
863	{	1597	{
864	void (*cb)(int revents, void *arg) = once->cb;	1598	void (*cb)(int revents, void *arg) = once->cb;
865	void *arg = once->arg;	1599	void *arg = once->arg;
866		1600
867	evio_stop (&once->io);	1601	ev_io_stop (EV_A_ &once->io);
868	evtimer_stop (&once->to);	1602	ev_timer_stop (EV_A_ &once->to);
869	free (once);	1603	ev_free (once);
870		1604
871	cb (revents, arg);	1605	cb (revents, arg);
872	}	1606	}
873		1607
874	static void	1608	static void
875	once_cb_io (struct ev_io *w, int revents)	1609	once_cb_io (EV_P_ struct ev_io *w, int revents)
876	{	1610	{
877	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1611	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
878	}	1612	}
879		1613
880	static void	1614	static void
881	once_cb_to (struct ev_timer *w, int revents)	1615	once_cb_to (EV_P_ struct ev_timer *w, int revents)
882	{	1616	{
883	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1617	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
884	}	1618	}
885		1619
886	void	1620	void
887	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1621	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
888	{	1622	{
889	struct ev_once *once = malloc (sizeof (struct ev_once));	1623	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
890		1624
891	if (!once)	1625	if (!once)
892	cb (EV_ERROR, arg);	1626	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
893	else	1627	else
894	{	1628	{
895	once->cb = cb;	1629	once->cb = cb;
896	once->arg = arg;	1630	once->arg = arg;
897		1631
898	evw_init (&once->io, once_cb_io);	1632	ev_init (&once->io, once_cb_io);
899
900	if (fd >= 0)	1633	if (fd >= 0)
901	{	1634	{
902	evio_set (&once->io, fd, events);	1635	ev_io_set (&once->io, fd, events);
903	evio_start (&once->io);	1636	ev_io_start (EV_A_ &once->io);
904	}	1637	}
905		1638
906	evw_init (&once->to, once_cb_to);	1639	ev_init (&once->to, once_cb_to);
907
908	if (timeout >= 0.)	1640	if (timeout >= 0.)
909	{	1641	{
910	evtimer_set (&once->to, timeout, 0.);	1642	ev_timer_set (&once->to, timeout, 0.);
911	evtimer_start (&once->to);	1643	ev_timer_start (EV_A_ &once->to);
912	}	1644	}
913	}	1645	}
914	}	1646	}
915		1647
916	/*****************************************************************************/	1648	#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	}	1649	}
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	1650	#endif
972		1651
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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