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Comparing libev/ev.c (file contents):
Revision 1.20 by root, Wed Oct 31 18:28:00 2007 UTC vs.
Revision 1.119 by root, Fri Nov 16 01:43:52 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	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
		68	#endif
		69
30	#include <math.h>	70	#include <math.h>
31	#include <stdlib.h>	71	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	72	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	73	#include <stddef.h>
36		74
37	#include <stdio.h>	75	#include <stdio.h>
38		76
39	#include <assert.h>	77	#include <assert.h>
40	#include <errno.h>	78	#include <errno.h>
41	#include <sys/time.h>	79	#include <sys/types.h>
42	#include <time.h>	80	#include <time.h>
43		81
44	#ifndef HAVE_MONOTONIC	82	#include <signal.h>
45	# ifdef CLOCK_MONOTONIC	83
46	# define HAVE_MONOTONIC 1	84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
		87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
47	# endif	93	# endif
48	#endif	94	#endif
49		95
		96	/**/
		97
		98	#ifndef EV_USE_MONOTONIC
		99	# define EV_USE_MONOTONIC 1
		100	#endif
		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 1
		104	#endif
		105
50	#ifndef HAVE_SELECT	106	#ifndef EV_USE_SELECT
51	# define HAVE_SELECT 1	107	# define EV_USE_SELECT 1
		108	# define EV_SELECT_USE_FD_SET 1
		109	#endif
		110
		111	#ifndef EV_USE_POLL
		112	# ifdef _WIN32
		113	# define EV_USE_POLL 0
		114	# else
		115	# define EV_USE_POLL 1
52	#endif	116	# endif
		117	#endif
53		118
54	#ifndef HAVE_EPOLL	119	#ifndef EV_USE_EPOLL
55	# define HAVE_EPOLL 0	120	# define EV_USE_EPOLL 0
56	#endif	121	#endif
57		122
		123	#ifndef EV_USE_KQUEUE
		124	# define EV_USE_KQUEUE 0
		125	#endif
		126
		127	#ifndef EV_USE_PORT
		128	# define EV_USE_PORT 0
		129	#endif
		130
		131	/**/
		132
		133	/* darwin simply cannot be helped */
		134	#ifdef __APPLE__
		135	# undef EV_USE_POLL
		136	# undef EV_USE_KQUEUE
		137	#endif
		138
		139	#ifndef CLOCK_MONOTONIC
		140	# undef EV_USE_MONOTONIC
		141	# define EV_USE_MONOTONIC 0
		142	#endif
		143
58	#ifndef HAVE_REALTIME	144	#ifndef CLOCK_REALTIME
59	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	145	# undef EV_USE_REALTIME
		146	# define EV_USE_REALTIME 0
60	#endif	147	#endif
		148
		149	#if EV_SELECT_IS_WINSOCKET
		150	# include <winsock.h>
		151	#endif
		152
		153	/**/
61		154
62	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	155	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
63	#define MAX_BLOCKTIME 60.	156	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
		157	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		158	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
64		159
		160	#ifdef EV_H
		161	# include EV_H
		162	#else
65	#include "ev.h"	163	# include "ev.h"
		164	#endif
		165
		166	#if __GNUC__ >= 3
		167	# define expect(expr,value) __builtin_expect ((expr),(value))
		168	# define inline inline
		169	#else
		170	# define expect(expr,value) (expr)
		171	# define inline static
		172	#endif
		173
		174	#define expect_false(expr) expect ((expr) != 0, 0)
		175	#define expect_true(expr) expect ((expr) != 0, 1)
		176
		177	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		178	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		179
		180	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		181	#define EMPTY2(a,b) /* used to suppress some warnings */
66		182
67	typedef struct ev_watcher *W;	183	typedef struct ev_watcher *W;
68	typedef struct ev_watcher_list *WL;	184	typedef struct ev_watcher_list *WL;
69	typedef struct ev_watcher_time *WT;	185	typedef struct ev_watcher_time *WT;
70		186
71	static ev_tstamp now, diff; /* monotonic clock */	187	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		188
		189	#ifdef _WIN32
		190	# include "ev_win32.c"
		191	#endif
		192
		193	/*****************************************************************************/
		194
		195	static void (*syserr_cb)(const char *msg);
		196
		197	void ev_set_syserr_cb (void (*cb)(const char *msg))
		198	{
		199	syserr_cb = cb;
		200	}
		201
		202	static void
		203	syserr (const char *msg)
		204	{
		205	if (!msg)
		206	msg = "(libev) system error";
		207
		208	if (syserr_cb)
		209	syserr_cb (msg);
		210	else
		211	{
		212	perror (msg);
		213	abort ();
		214	}
		215	}
		216
		217	static void *(*alloc)(void *ptr, long size);
		218
		219	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		220	{
		221	alloc = cb;
		222	}
		223
		224	static void *
		225	ev_realloc (void *ptr, long size)
		226	{
		227	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		228
		229	if (!ptr && size)
		230	{
		231	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		232	abort ();
		233	}
		234
		235	return ptr;
		236	}
		237
		238	#define ev_malloc(size) ev_realloc (0, (size))
		239	#define ev_free(ptr) ev_realloc ((ptr), 0)
		240
		241	/*****************************************************************************/
		242
		243	typedef struct
		244	{
		245	WL head;
		246	unsigned char events;
		247	unsigned char reify;
		248	#if EV_SELECT_IS_WINSOCKET
		249	SOCKET handle;
		250	#endif
		251	} ANFD;
		252
		253	typedef struct
		254	{
		255	W w;
		256	int events;
		257	} ANPENDING;
		258
		259	#if EV_MULTIPLICITY
		260
		261	struct ev_loop
		262	{
		263	ev_tstamp ev_rt_now;
		264	#define ev_rt_now ((loop)->ev_rt_now)
		265	#define VAR(name,decl) decl;
		266	#include "ev_vars.h"
		267	#undef VAR
		268	};
		269	#include "ev_wrap.h"
		270
		271	static struct ev_loop default_loop_struct;
		272	struct ev_loop *ev_default_loop_ptr;
		273
		274	#else
		275
72	ev_tstamp ev_now;	276	ev_tstamp ev_rt_now;
73	int ev_method;	277	#define VAR(name,decl) static decl;
		278	#include "ev_vars.h"
		279	#undef VAR
74		280
75	static int have_monotonic; /* runtime */	281	static int ev_default_loop_ptr;
76		282
77	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	283	#endif
78	static void (*method_modify)(int fd, int oev, int nev);
79	static void (*method_poll)(ev_tstamp timeout);
80		284
81	/*****************************************************************************/	285	/*****************************************************************************/
82		286
83	ev_tstamp	287	ev_tstamp
84	ev_time (void)	288	ev_time (void)
85	{	289	{
86	#if HAVE_REALTIME	290	#if EV_USE_REALTIME
87	struct timespec ts;	291	struct timespec ts;
88	clock_gettime (CLOCK_REALTIME, &ts);	292	clock_gettime (CLOCK_REALTIME, &ts);
89	return ts.tv_sec + ts.tv_nsec * 1e-9;	293	return ts.tv_sec + ts.tv_nsec * 1e-9;
90	#else	294	#else
91	struct timeval tv;	295	struct timeval tv;
92	gettimeofday (&tv, 0);	296	gettimeofday (&tv, 0);
93	return tv.tv_sec + tv.tv_usec * 1e-6;	297	return tv.tv_sec + tv.tv_usec * 1e-6;
94	#endif	298	#endif
95	}	299	}
96		300
97	static ev_tstamp	301	inline ev_tstamp
98	get_clock (void)	302	get_clock (void)
99	{	303	{
100	#if HAVE_MONOTONIC	304	#if EV_USE_MONOTONIC
101	if (have_monotonic)	305	if (expect_true (have_monotonic))
102	{	306	{
103	struct timespec ts;	307	struct timespec ts;
104	clock_gettime (CLOCK_MONOTONIC, &ts);	308	clock_gettime (CLOCK_MONOTONIC, &ts);
105	return ts.tv_sec + ts.tv_nsec * 1e-9;	309	return ts.tv_sec + ts.tv_nsec * 1e-9;
106	}	310	}
107	#endif	311	#endif
108		312
109	return ev_time ();	313	return ev_time ();
110	}	314	}
111		315
		316	#if EV_MULTIPLICITY
		317	ev_tstamp
		318	ev_now (EV_P)
		319	{
		320	return ev_rt_now;
		321	}
		322	#endif
		323
		324	#define array_roundsize(type,n) (((n) | 4) & ~3)
		325
112	#define array_needsize(base,cur,cnt,init) \	326	#define array_needsize(type,base,cur,cnt,init) \
113	if ((cnt) > cur) \	327	if (expect_false ((cnt) > cur)) \
114	{ \	328	{ \
115	int newcnt = cur ? cur << 1 : 16; \	329	int newcnt = cur; \
		330	do \
		331	{ \
		332	newcnt = array_roundsize (type, newcnt << 1); \
		333	} \
		334	while ((cnt) > newcnt); \
		335	\
116	base = realloc (base, sizeof (*base) * (newcnt)); \	336	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
117	init (base + cur, newcnt - cur); \	337	init (base + cur, newcnt - cur); \
118	cur = newcnt; \	338	cur = newcnt; \
119	}	339	}
		340
		341	#define array_slim(type,stem) \
		342	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		343	{ \
		344	stem ## max = array_roundsize (stem ## cnt >> 1); \
		345	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		346	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		347	}
		348
		349	#define array_free(stem, idx) \
		350	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
120		351
121	/*****************************************************************************/	352	/*****************************************************************************/
122		353
123	typedef struct
124	{
125	struct ev_io *head;
126	unsigned char wev, rev; /* want, received event set */
127	} ANFD;
128
129	static ANFD *anfds;
130	static int anfdmax;
131
132	static int *fdchanges;
133	static int fdchangemax, fdchangecnt;
134
135	static void	354	static void
136	anfds_init (ANFD *base, int count)	355	anfds_init (ANFD *base, int count)
137	{	356	{
138	while (count--)	357	while (count--)
139	{	358	{
140	base->head = 0;	359	base->head = 0;
141	base->wev = base->rev = EV_NONE;	360	base->events = EV_NONE;
		361	base->reify = 0;
		362
142	++base;	363	++base;
143	}	364	}
144	}	365	}
145		366
146	typedef struct	367	void
		368	ev_feed_event (EV_P_ void *w, int revents)
147	{	369	{
148	W w;	370	W w_ = (W)w;
149	int events;
150	} ANPENDING;
151		371
152	static ANPENDING *pendings;	372	if (w_->pending)
153	static int pendingmax, pendingcnt;
154
155	static void
156	event (W w, int events)
157	{
158	if (w->active)
159	{	373	{
160	w->pending = ++pendingcnt;
161	array_needsize (pendings, pendingmax, pendingcnt, );
162	pendings [pendingcnt - 1].w = w;
163	pendings [pendingcnt - 1].events = events;	374	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		375	return;
164	}	376	}
165	}
166		377
		378	w_->pending = ++pendingcnt [ABSPRI (w_)];
		379	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		380	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		381	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		382	}
		383
167	static void	384	static void
		385	queue_events (EV_P_ W *events, int eventcnt, int type)
		386	{
		387	int i;
		388
		389	for (i = 0; i < eventcnt; ++i)
		390	ev_feed_event (EV_A_ events [i], type);
		391	}
		392
		393	inline void
168	fd_event (int fd, int events)	394	fd_event (EV_P_ int fd, int revents)
169	{	395	{
170	ANFD *anfd = anfds + fd;	396	ANFD *anfd = anfds + fd;
171	struct ev_io *w;	397	struct ev_io *w;
172		398
173	for (w = anfd->head; w; w = w->next)	399	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
174	{	400	{
175	int ev = w->events & events;	401	int ev = w->events & revents;
176		402
177	if (ev)	403	if (ev)
178	event ((W)w, ev);	404	ev_feed_event (EV_A_ (W)w, ev);
179	}	405	}
180	}	406	}
181		407
182	static void	408	void
183	queue_events (W *events, int eventcnt, int type)	409	ev_feed_fd_event (EV_P_ int fd, int revents)
184	{	410	{
185	int i;	411	fd_event (EV_A_ fd, revents);
186
187	for (i = 0; i < eventcnt; ++i)
188	event (events [i], type);
189	}
190
191	/* called on EBADF to verify fds */
192	static void
193	fd_recheck ()
194	{
195	int fd;
196
197	for (fd = 0; fd < anfdmax; ++fd)
198	if (anfds [fd].wev)
199	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
200	while (anfds [fd].head)
201	evio_stop (anfds [fd].head);
202	}	412	}
203		413
204	/*****************************************************************************/	414	/*****************************************************************************/
205		415
206	static struct ev_timer **timers;
207	static int timermax, timercnt;
208
209	static struct ev_periodic **periodics;
210	static int periodicmax, periodiccnt;
211
212	static void	416	static void
213	upheap (WT *timers, int k)	417	fd_reify (EV_P)
214	{
215	WT w = timers [k];
216
217	while (k && timers [k >> 1]->at > w->at)
218	{
219	timers [k] = timers [k >> 1];
220	timers [k]->active = k + 1;
221	k >>= 1;
222	}
223
224	timers [k] = w;
225	timers [k]->active = k + 1;
226
227	}
228
229	static void
230	downheap (WT *timers, int N, int k)
231	{
232	WT w = timers [k];
233
234	while (k < (N >> 1))
235	{
236	int j = k << 1;
237
238	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)
239	++j;
240
241	if (w->at <= timers [j]->at)
242	break;
243
244	timers [k] = timers [j];
245	timers [k]->active = k + 1;
246	k = j;
247	}
248
249	timers [k] = w;
250	timers [k]->active = k + 1;
251	}
252
253	/*****************************************************************************/
254
255	typedef struct
256	{
257	struct ev_signal *head;
258	sig_atomic_t gotsig;
259	} ANSIG;
260
261	static ANSIG *signals;
262	static int signalmax;
263
264	static int sigpipe [2];
265	static sig_atomic_t gotsig;
266	static struct ev_io sigev;
267
268	static void
269	signals_init (ANSIG *base, int count)
270	{
271	while (count--)
272	{
273	base->head = 0;
274	base->gotsig = 0;
275	++base;
276	}
277	}
278
279	static void
280	sighandler (int signum)
281	{
282	signals [signum - 1].gotsig = 1;
283
284	if (!gotsig)
285	{
286	gotsig = 1;
287	write (sigpipe [1], &gotsig, 1);
288	}
289	}
290
291	static void
292	sigcb (struct ev_io *iow, int revents)
293	{
294	struct ev_signal *w;
295	int sig;
296
297	gotsig = 0;
298	read (sigpipe [0], &revents, 1);
299
300	for (sig = signalmax; sig--; )
301	if (signals [sig].gotsig)
302	{
303	signals [sig].gotsig = 0;
304
305	for (w = signals [sig].head; w; w = w->next)
306	event ((W)w, EV_SIGNAL);
307	}
308	}
309
310	static void
311	siginit (void)
312	{
313	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
314	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
315
316	/* rather than sort out wether we really need nb, set it */
317	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
318	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
319
320	evio_set (&sigev, sigpipe [0], EV_READ);
321	evio_start (&sigev);
322	}
323
324	/*****************************************************************************/
325
326	static struct ev_idle **idles;
327	static int idlemax, idlecnt;
328
329	static struct ev_prepare **prepares;
330	static int preparemax, preparecnt;
331
332	static struct ev_check **checks;
333	static int checkmax, checkcnt;
334
335	/*****************************************************************************/
336
337	#if HAVE_EPOLL
338	# include "ev_epoll.c"
339	#endif
340	#if HAVE_SELECT
341	# include "ev_select.c"
342	#endif
343
344	int ev_init (int flags)
345	{
346	#if HAVE_MONOTONIC
347	{
348	struct timespec ts;
349	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
350	have_monotonic = 1;
351	}
352	#endif
353
354	ev_now = ev_time ();
355	now = get_clock ();
356	diff = ev_now - now;
357
358	if (pipe (sigpipe))
359	return 0;
360
361	ev_method = EVMETHOD_NONE;
362	#if HAVE_EPOLL
363	if (ev_method == EVMETHOD_NONE) epoll_init (flags);
364	#endif
365	#if HAVE_SELECT
366	if (ev_method == EVMETHOD_NONE) select_init (flags);
367	#endif
368
369	if (ev_method)
370	{
371	evw_init (&sigev, sigcb);
372	siginit ();
373	}
374
375	return ev_method;
376	}
377
378	/*****************************************************************************/
379
380	void ev_prefork (void)
381	{
382	/* nop */
383	}
384
385	void ev_postfork_parent (void)
386	{
387	/* nop */
388	}
389
390	void ev_postfork_child (void)
391	{
392	#if HAVE_EPOLL
393	if (ev_method == EVMETHOD_EPOLL)
394	epoll_postfork_child ();
395	#endif
396
397	evio_stop (&sigev);
398	close (sigpipe [0]);
399	close (sigpipe [1]);
400	pipe (sigpipe);
401	siginit ();
402	}
403
404	/*****************************************************************************/
405
406	static void
407	fd_reify (void)
408	{	418	{
409	int i;	419	int i;
410		420
411	for (i = 0; i < fdchangecnt; ++i)	421	for (i = 0; i < fdchangecnt; ++i)
412	{	422	{
413	int fd = fdchanges [i];	423	int fd = fdchanges [i];
414	ANFD *anfd = anfds + fd;	424	ANFD *anfd = anfds + fd;
415	struct ev_io *w;	425	struct ev_io *w;
416		426
417	int wev = 0;	427	int events = 0;
418		428
419	for (w = anfd->head; w; w = w->next)	429	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
420	wev |= w->events;	430	events |= w->events;
421		431
422	if (anfd->wev != wev)	432	#if EV_SELECT_IS_WINSOCKET
		433	if (events)
423	{	434	{
424	method_modify (fd, anfd->wev, wev);	435	unsigned long argp;
425	anfd->wev = wev;	436	anfd->handle = _get_osfhandle (fd);
		437	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
426	}	438	}
		439	#endif
		440
		441	anfd->reify = 0;
		442
		443	method_modify (EV_A_ fd, anfd->events, events);
		444	anfd->events = events;
427	}	445	}
428		446
429	fdchangecnt = 0;	447	fdchangecnt = 0;
430	}	448	}
431		449
432	static void	450	static void
433	call_pending ()	451	fd_change (EV_P_ int fd)
434	{	452	{
435	while (pendingcnt)	453	if (anfds [fd].reify)
		454	return;
		455
		456	anfds [fd].reify = 1;
		457
		458	++fdchangecnt;
		459	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
		460	fdchanges [fdchangecnt - 1] = fd;
		461	}
		462
		463	static void
		464	fd_kill (EV_P_ int fd)
		465	{
		466	struct ev_io *w;
		467
		468	while ((w = (struct ev_io *)anfds [fd].head))
		469	{
		470	ev_io_stop (EV_A_ w);
		471	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		472	}
		473	}
		474
		475	static int
		476	fd_valid (int fd)
		477	{
		478	#ifdef _WIN32
		479	return _get_osfhandle (fd) != -1;
		480	#else
		481	return fcntl (fd, F_GETFD) != -1;
		482	#endif
		483	}
		484
		485	/* called on EBADF to verify fds */
		486	static void
		487	fd_ebadf (EV_P)
		488	{
		489	int fd;
		490
		491	for (fd = 0; fd < anfdmax; ++fd)
		492	if (anfds [fd].events)
		493	if (!fd_valid (fd) == -1 && errno == EBADF)
		494	fd_kill (EV_A_ fd);
		495	}
		496
		497	/* called on ENOMEM in select/poll to kill some fds and retry */
		498	static void
		499	fd_enomem (EV_P)
		500	{
		501	int fd;
		502
		503	for (fd = anfdmax; fd--; )
		504	if (anfds [fd].events)
436	{	505	{
437	ANPENDING *p = pendings + --pendingcnt;	506	fd_kill (EV_A_ fd);
		507	return;
		508	}
		509	}
438		510
439	if (p->w)	511	/* usually called after fork if method needs to re-arm all fds from scratch */
		512	static void
		513	fd_rearm_all (EV_P)
		514	{
		515	int fd;
		516
		517	/* this should be highly optimised to not do anything but set a flag */
		518	for (fd = 0; fd < anfdmax; ++fd)
		519	if (anfds [fd].events)
		520	{
		521	anfds [fd].events = 0;
		522	fd_change (EV_A_ fd);
		523	}
		524	}
		525
		526	/*****************************************************************************/
		527
		528	static void
		529	upheap (WT *heap, int k)
		530	{
		531	WT w = heap [k];
		532
		533	while (k && heap [k >> 1]->at > w->at)
		534	{
		535	heap [k] = heap [k >> 1];
		536	((W)heap [k])->active = k + 1;
		537	k >>= 1;
		538	}
		539
		540	heap [k] = w;
		541	((W)heap [k])->active = k + 1;
		542
		543	}
		544
		545	static void
		546	downheap (WT *heap, int N, int k)
		547	{
		548	WT w = heap [k];
		549
		550	while (k < (N >> 1))
		551	{
		552	int j = k << 1;
		553
		554	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
		555	++j;
		556
		557	if (w->at <= heap [j]->at)
		558	break;
		559
		560	heap [k] = heap [j];
		561	((W)heap [k])->active = k + 1;
		562	k = j;
		563	}
		564
		565	heap [k] = w;
		566	((W)heap [k])->active = k + 1;
		567	}
		568
		569	inline void
		570	adjustheap (WT *heap, int N, int k)
		571	{
		572	upheap (heap, k);
		573	downheap (heap, N, k);
		574	}
		575
		576	/*****************************************************************************/
		577
		578	typedef struct
		579	{
		580	WL head;
		581	sig_atomic_t volatile gotsig;
		582	} ANSIG;
		583
		584	static ANSIG *signals;
		585	static int signalmax;
		586
		587	static int sigpipe [2];
		588	static sig_atomic_t volatile gotsig;
		589	static struct ev_io sigev;
		590
		591	static void
		592	signals_init (ANSIG *base, int count)
		593	{
		594	while (count--)
		595	{
		596	base->head = 0;
		597	base->gotsig = 0;
		598
		599	++base;
		600	}
		601	}
		602
		603	static void
		604	sighandler (int signum)
		605	{
		606	#if _WIN32
		607	signal (signum, sighandler);
		608	#endif
		609
		610	signals [signum - 1].gotsig = 1;
		611
		612	if (!gotsig)
		613	{
		614	int old_errno = errno;
		615	gotsig = 1;
		616	write (sigpipe [1], &signum, 1);
		617	errno = old_errno;
		618	}
		619	}
		620
		621	void
		622	ev_feed_signal_event (EV_P_ int signum)
		623	{
		624	WL w;
		625
		626	#if EV_MULTIPLICITY
		627	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		628	#endif
		629
		630	--signum;
		631
		632	if (signum < 0 || signum >= signalmax)
		633	return;
		634
		635	signals [signum].gotsig = 0;
		636
		637	for (w = signals [signum].head; w; w = w->next)
		638	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		639	}
		640
		641	static void
		642	sigcb (EV_P_ struct ev_io *iow, int revents)
		643	{
		644	int signum;
		645
		646	read (sigpipe [0], &revents, 1);
		647	gotsig = 0;
		648
		649	for (signum = signalmax; signum--; )
		650	if (signals [signum].gotsig)
		651	ev_feed_signal_event (EV_A_ signum + 1);
		652	}
		653
		654	inline void
		655	fd_intern (int fd)
		656	{
		657	#ifdef _WIN32
		658	int arg = 1;
		659	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		660	#else
		661	fcntl (fd, F_SETFD, FD_CLOEXEC);
		662	fcntl (fd, F_SETFL, O_NONBLOCK);
		663	#endif
		664	}
		665
		666	static void
		667	siginit (EV_P)
		668	{
		669	fd_intern (sigpipe [0]);
		670	fd_intern (sigpipe [1]);
		671
		672	ev_io_set (&sigev, sigpipe [0], EV_READ);
		673	ev_io_start (EV_A_ &sigev);
		674	ev_unref (EV_A); /* child watcher should not keep loop alive */
		675	}
		676
		677	/*****************************************************************************/
		678
		679	static struct ev_child *childs [PID_HASHSIZE];
		680
		681	#ifndef _WIN32
		682
		683	static struct ev_signal childev;
		684
		685	#ifndef WCONTINUED
		686	# define WCONTINUED 0
		687	#endif
		688
		689	static void
		690	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
		691	{
		692	struct ev_child *w;
		693
		694	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		695	if (w->pid == pid || !w->pid)
		696	{
		697	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		698	w->rpid = pid;
		699	w->rstatus = status;
		700	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		701	}
		702	}
		703
		704	static void
		705	childcb (EV_P_ struct ev_signal *sw, int revents)
		706	{
		707	int pid, status;
		708
		709	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
		710	{
		711	/* make sure we are called again until all childs have been reaped */
		712	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		713
		714	child_reap (EV_A_ sw, pid, pid, status);
		715	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		716	}
		717	}
		718
		719	#endif
		720
		721	/*****************************************************************************/
		722
		723	#if EV_USE_PORT
		724	# include "ev_port.c"
		725	#endif
		726	#if EV_USE_KQUEUE
		727	# include "ev_kqueue.c"
		728	#endif
		729	#if EV_USE_EPOLL
		730	# include "ev_epoll.c"
		731	#endif
		732	#if EV_USE_POLL
		733	# include "ev_poll.c"
		734	#endif
		735	#if EV_USE_SELECT
		736	# include "ev_select.c"
		737	#endif
		738
		739	int
		740	ev_version_major (void)
		741	{
		742	return EV_VERSION_MAJOR;
		743	}
		744
		745	int
		746	ev_version_minor (void)
		747	{
		748	return EV_VERSION_MINOR;
		749	}
		750
		751	/* return true if we are running with elevated privileges and should ignore env variables */
		752	static int
		753	enable_secure (void)
		754	{
		755	#ifdef _WIN32
		756	return 0;
		757	#else
		758	return getuid () != geteuid ()
		759	|| getgid () != getegid ();
		760	#endif
		761	}
		762
		763	unsigned int
		764	ev_method (EV_P)
		765	{
		766	return method;
		767	}
		768
		769	static void
		770	loop_init (EV_P_ unsigned int flags)
		771	{
		772	if (!method)
		773	{
		774	#if EV_USE_MONOTONIC
		775	{
		776	struct timespec ts;
		777	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
		778	have_monotonic = 1;
		779	}
		780	#endif
		781
		782	ev_rt_now = ev_time ();
		783	mn_now = get_clock ();
		784	now_floor = mn_now;
		785	rtmn_diff = ev_rt_now - mn_now;
		786
		787	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
		788	flags = atoi (getenv ("LIBEV_FLAGS"));
		789
		790	if (!(flags & 0x0000ffff))
		791	flags |= 0x0000ffff;
		792
		793	method = 0;
		794	#if EV_USE_PORT
		795	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		796	#endif
		797	#if EV_USE_KQUEUE
		798	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		799	#endif
		800	#if EV_USE_EPOLL
		801	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		802	#endif
		803	#if EV_USE_POLL
		804	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
		805	#endif
		806	#if EV_USE_SELECT
		807	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
		808	#endif
		809
		810	ev_init (&sigev, sigcb);
		811	ev_set_priority (&sigev, EV_MAXPRI);
		812	}
		813	}
		814
		815	void
		816	loop_destroy (EV_P)
		817	{
		818	int i;
		819
		820	#if EV_USE_PORT
		821	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		822	#endif
		823	#if EV_USE_KQUEUE
		824	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		825	#endif
		826	#if EV_USE_EPOLL
		827	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		828	#endif
		829	#if EV_USE_POLL
		830	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		831	#endif
		832	#if EV_USE_SELECT
		833	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		834	#endif
		835
		836	for (i = NUMPRI; i--; )
		837	array_free (pending, [i]);
		838
		839	/* have to use the microsoft-never-gets-it-right macro */
		840	array_free (fdchange, EMPTY0);
		841	array_free (timer, EMPTY0);
		842	#if EV_PERIODICS
		843	array_free (periodic, EMPTY0);
		844	#endif
		845	array_free (idle, EMPTY0);
		846	array_free (prepare, EMPTY0);
		847	array_free (check, EMPTY0);
		848
		849	method = 0;
		850	}
		851
		852	static void
		853	loop_fork (EV_P)
		854	{
		855	#if EV_USE_PORT
		856	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		857	#endif
		858	#if EV_USE_KQUEUE
		859	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		860	#endif
		861	#if EV_USE_EPOLL
		862	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		863	#endif
		864
		865	if (ev_is_active (&sigev))
		866	{
		867	/* default loop */
		868
		869	ev_ref (EV_A);
		870	ev_io_stop (EV_A_ &sigev);
		871	close (sigpipe [0]);
		872	close (sigpipe [1]);
		873
		874	while (pipe (sigpipe))
		875	syserr ("(libev) error creating pipe");
		876
		877	siginit (EV_A);
		878	}
		879
		880	postfork = 0;
		881	}
		882
		883	#if EV_MULTIPLICITY
		884	struct ev_loop *
		885	ev_loop_new (unsigned int flags)
		886	{
		887	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		888
		889	memset (loop, 0, sizeof (struct ev_loop));
		890
		891	loop_init (EV_A_ flags);
		892
		893	if (ev_method (EV_A))
		894	return loop;
		895
		896	return 0;
		897	}
		898
		899	void
		900	ev_loop_destroy (EV_P)
		901	{
		902	loop_destroy (EV_A);
		903	ev_free (loop);
		904	}
		905
		906	void
		907	ev_loop_fork (EV_P)
		908	{
		909	postfork = 1;
		910	}
		911
		912	#endif
		913
		914	#if EV_MULTIPLICITY
		915	struct ev_loop *
		916	ev_default_loop_ (unsigned int flags)
		917	#else
		918	int
		919	ev_default_loop (unsigned int flags)
		920	#endif
		921	{
		922	if (sigpipe [0] == sigpipe [1])
		923	if (pipe (sigpipe))
		924	return 0;
		925
		926	if (!ev_default_loop_ptr)
		927	{
		928	#if EV_MULTIPLICITY
		929	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		930	#else
		931	ev_default_loop_ptr = 1;
		932	#endif
		933
		934	loop_init (EV_A_ flags);
		935
		936	if (ev_method (EV_A))
440	{	937	{
441	p->w->pending = 0;	938	siginit (EV_A);
442	p->w->cb (p->w, p->events);	939
		940	#ifndef _WIN32
		941	ev_signal_init (&childev, childcb, SIGCHLD);
		942	ev_set_priority (&childev, EV_MAXPRI);
		943	ev_signal_start (EV_A_ &childev);
		944	ev_unref (EV_A); /* child watcher should not keep loop alive */
		945	#endif
443	}	946	}
		947	else
		948	ev_default_loop_ptr = 0;
		949	}
		950
		951	return ev_default_loop_ptr;
		952	}
		953
		954	void
		955	ev_default_destroy (void)
		956	{
		957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = ev_default_loop_ptr;
		959	#endif
		960
		961	#ifndef _WIN32
		962	ev_ref (EV_A); /* child watcher */
		963	ev_signal_stop (EV_A_ &childev);
		964	#endif
		965
		966	ev_ref (EV_A); /* signal watcher */
		967	ev_io_stop (EV_A_ &sigev);
		968
		969	close (sigpipe [0]); sigpipe [0] = 0;
		970	close (sigpipe [1]); sigpipe [1] = 0;
		971
		972	loop_destroy (EV_A);
		973	}
		974
		975	void
		976	ev_default_fork (void)
		977	{
		978	#if EV_MULTIPLICITY
		979	struct ev_loop *loop = ev_default_loop_ptr;
		980	#endif
		981
		982	if (method)
		983	postfork = 1;
		984	}
		985
		986	/*****************************************************************************/
		987
		988	static int
		989	any_pending (EV_P)
		990	{
		991	int pri;
		992
		993	for (pri = NUMPRI; pri--; )
		994	if (pendingcnt [pri])
		995	return 1;
		996
		997	return 0;
		998	}
		999
		1000	static void
		1001	call_pending (EV_P)
		1002	{
		1003	int pri;
		1004
		1005	for (pri = NUMPRI; pri--; )
		1006	while (pendingcnt [pri])
		1007	{
		1008	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
		1009
		1010	if (p->w)
		1011	{
		1012	p->w->pending = 0;
		1013	EV_CB_INVOKE (p->w, p->events);
		1014	}
444	}	1015	}
445	}	1016	}
446		1017
447	static void	1018	static void
448	timers_reify ()	1019	timers_reify (EV_P)
449	{	1020	{
450	while (timercnt && timers [0]->at <= now)	1021	while (timercnt && ((WT)timers [0])->at <= mn_now)
451	{	1022	{
452	struct ev_timer *w = timers [0];	1023	struct ev_timer *w = timers [0];
453		1024
454	event ((W)w, EV_TIMEOUT);	1025	assert (("inactive timer on timer heap detected", ev_is_active (w)));
455		1026
456	/* first reschedule or stop timer */	1027	/* first reschedule or stop timer */
457	if (w->repeat)	1028	if (w->repeat)
458	{	1029	{
		1030	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1031
459	w->at = now + w->repeat;	1032	((WT)w)->at += w->repeat;
460	assert (("timer timeout in the past, negative repeat?", w->at > now));	1033	if (((WT)w)->at < mn_now)
		1034	((WT)w)->at = mn_now;
		1035
461	downheap ((WT *)timers, timercnt, 0);	1036	downheap ((WT *)timers, timercnt, 0);
462	}	1037	}
463	else	1038	else
464	evtimer_stop (w); /* nonrepeating: stop timer */	1039	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
465	}
466	}
467		1040
		1041	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1042	}
		1043	}
		1044
		1045	#if EV_PERIODICS
468	static void	1046	static void
469	periodics_reify ()	1047	periodics_reify (EV_P)
470	{	1048	{
471	while (periodiccnt && periodics [0]->at <= ev_now)	1049	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
472	{	1050	{
473	struct ev_periodic *w = periodics [0];	1051	struct ev_periodic *w = periodics [0];
474		1052
		1053	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1054
475	/* first reschedule or stop timer */	1055	/* first reschedule or stop timer */
476	if (w->interval)	1056	if (w->reschedule_cb)
477	{	1057	{
		1058	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1059	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1060	downheap ((WT *)periodics, periodiccnt, 0);
		1061	}
		1062	else if (w->interval)
		1063	{
478	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1064	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
479	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1065	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
480	downheap ((WT *)periodics, periodiccnt, 0);	1066	downheap ((WT *)periodics, periodiccnt, 0);
481	}	1067	}
482	else	1068	else
483	evperiodic_stop (w); /* nonrepeating: stop timer */	1069	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
484		1070
485	event ((W)w, EV_TIMEOUT);	1071	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
486	}	1072	}
487	}	1073	}
488		1074
489	static void	1075	static void
490	periodics_reschedule (ev_tstamp diff)	1076	periodics_reschedule (EV_P)
491	{	1077	{
492	int i;	1078	int i;
493		1079
494	/* adjust periodics after time jump */	1080	/* adjust periodics after time jump */
495	for (i = 0; i < periodiccnt; ++i)	1081	for (i = 0; i < periodiccnt; ++i)
496	{	1082	{
497	struct ev_periodic *w = periodics [i];	1083	struct ev_periodic *w = periodics [i];
498		1084
		1085	if (w->reschedule_cb)
		1086	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
499	if (w->interval)	1087	else if (w->interval)
		1088	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1089	}
		1090
		1091	/* now rebuild the heap */
		1092	for (i = periodiccnt >> 1; i--; )
		1093	downheap ((WT *)periodics, periodiccnt, i);
		1094	}
		1095	#endif
		1096
		1097	inline int
		1098	time_update_monotonic (EV_P)
		1099	{
		1100	mn_now = get_clock ();
		1101
		1102	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1103	{
		1104	ev_rt_now = rtmn_diff + mn_now;
		1105	return 0;
		1106	}
		1107	else
		1108	{
		1109	now_floor = mn_now;
		1110	ev_rt_now = ev_time ();
		1111	return 1;
		1112	}
		1113	}
		1114
		1115	static void
		1116	time_update (EV_P)
		1117	{
		1118	int i;
		1119
		1120	#if EV_USE_MONOTONIC
		1121	if (expect_true (have_monotonic))
		1122	{
		1123	if (time_update_monotonic (EV_A))
500	{	1124	{
501	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1125	ev_tstamp odiff = rtmn_diff;
502		1126
503	if (fabs (diff) >= 1e-4)	1127	for (i = 4; --i; ) /* loop a few times, before making important decisions */
504	{	1128	{
505	evperiodic_stop (w);	1129	rtmn_diff = ev_rt_now - mn_now;
506	evperiodic_start (w);
507		1130
508	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1131	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1132	return; /* all is well */
		1133
		1134	ev_rt_now = ev_time ();
		1135	mn_now = get_clock ();
		1136	now_floor = mn_now;
509	}	1137	}
		1138
		1139	# if EV_PERIODICS
		1140	periodics_reschedule (EV_A);
		1141	# endif
		1142	/* no timer adjustment, as the monotonic clock doesn't jump */
		1143	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
510	}	1144	}
511	}	1145	}
512	}	1146	else
513		1147	#endif
514	static void	1148	{
515	time_update ()
516	{
517	int i;
518
519	ev_now = ev_time ();	1149	ev_rt_now = ev_time ();
520		1150
521	if (have_monotonic)	1151	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
522	{
523	ev_tstamp odiff = diff;
524
525	for (i = 4; --i; ) /* loop a few times, before making important decisions */
526	{	1152	{
527	now = get_clock ();	1153	#if EV_PERIODICS
528	diff = ev_now - now;
529
530	if (fabs (odiff - diff) < MIN_TIMEJUMP)
531	return; /* all is well */
532
533	ev_now = ev_time ();
534	}
535
536	periodics_reschedule (diff - odiff);
537	/* no timer adjustment, as the monotonic clock doesn't jump */
538	}
539	else
540	{
541	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
542	{
543	periodics_reschedule (ev_now - now);	1154	periodics_reschedule (EV_A);
		1155	#endif
544		1156
545	/* adjust timers. this is easy, as the offset is the same for all */	1157	/* adjust timers. this is easy, as the offset is the same for all */
546	for (i = 0; i < timercnt; ++i)	1158	for (i = 0; i < timercnt; ++i)
547	timers [i]->at += diff;	1159	((WT)timers [i])->at += ev_rt_now - mn_now;
548	}	1160	}
549		1161
550	now = ev_now;	1162	mn_now = ev_rt_now;
551	}	1163	}
552	}	1164	}
553		1165
554	int ev_loop_done;	1166	void
		1167	ev_ref (EV_P)
		1168	{
		1169	++activecnt;
		1170	}
555		1171
		1172	void
		1173	ev_unref (EV_P)
		1174	{
		1175	--activecnt;
		1176	}
		1177
		1178	static int loop_done;
		1179
		1180	void
556	void ev_loop (int flags)	1181	ev_loop (EV_P_ int flags)
557	{	1182	{
558	double block;	1183	double block;
559	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	1184	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
560		1185
561	do	1186	while (activecnt)
562	{	1187	{
563	/* queue check watchers (and execute them) */	1188	/* queue check watchers (and execute them) */
564	if (checkcnt)	1189	if (expect_false (preparecnt))
565	{	1190	{
566	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1191	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
567	call_pending ();	1192	call_pending (EV_A);
568	}	1193	}
569		1194
		1195	/* we might have forked, so reify kernel state if necessary */
		1196	if (expect_false (postfork))
		1197	loop_fork (EV_A);
		1198
570	/* update fd-related kernel structures */	1199	/* update fd-related kernel structures */
571	fd_reify ();	1200	fd_reify (EV_A);
572		1201
573	/* calculate blocking time */	1202	/* calculate blocking time */
574		1203
575	/* we only need this for !monotonic clock, but as we always have timers, we just calculate it every time */	1204	/* we only need this for !monotonic clock or timers, but as we basically
		1205	always have timers, we just calculate it always */
		1206	#if EV_USE_MONOTONIC
		1207	if (expect_true (have_monotonic))
		1208	time_update_monotonic (EV_A);
		1209	else
		1210	#endif
		1211	{
576	ev_now = ev_time ();	1212	ev_rt_now = ev_time ();
		1213	mn_now = ev_rt_now;
		1214	}
577		1215
578	if (flags & EVLOOP_NONBLOCK || idlecnt)	1216	if (flags & EVLOOP_NONBLOCK || idlecnt)
579	block = 0.;	1217	block = 0.;
580	else	1218	else
581	{	1219	{
582	block = MAX_BLOCKTIME;	1220	block = MAX_BLOCKTIME;
583		1221
584	if (timercnt)	1222	if (timercnt)
585	{	1223	{
586	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1224	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
587	if (block > to) block = to;	1225	if (block > to) block = to;
588	}	1226	}
589		1227
		1228	#if EV_PERIODICS
590	if (periodiccnt)	1229	if (periodiccnt)
591	{	1230	{
592	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1231	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
593	if (block > to) block = to;	1232	if (block > to) block = to;
594	}	1233	}
		1234	#endif
595		1235
596	if (block < 0.) block = 0.;	1236	if (block < 0.) block = 0.;
597	}	1237	}
598		1238
599	method_poll (block);	1239	method_poll (EV_A_ block);
600		1240
601	/* update ev_now, do magic */	1241	/* update ev_rt_now, do magic */
602	time_update ();	1242	time_update (EV_A);
603		1243
604	/* queue pending timers and reschedule them */	1244	/* queue pending timers and reschedule them */
605	timers_reify (); /* relative timers called last */	1245	timers_reify (EV_A); /* relative timers called last */
		1246	#if EV_PERIODICS
606	periodics_reify (); /* absolute timers called first */	1247	periodics_reify (EV_A); /* absolute timers called first */
		1248	#endif
607		1249
608	/* queue idle watchers unless io or timers are pending */	1250	/* queue idle watchers unless io or timers are pending */
609	if (!pendingcnt)	1251	if (idlecnt && !any_pending (EV_A))
610	queue_events ((W *)idles, idlecnt, EV_IDLE);	1252	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
611		1253
612	/* queue check watchers, to be executed first */	1254	/* queue check watchers, to be executed first */
613	if (checkcnt)	1255	if (checkcnt)
614	queue_events ((W *)checks, checkcnt, EV_CHECK);	1256	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
615		1257
616	call_pending ();	1258	call_pending (EV_A);
617	}
618	while (!ev_loop_done);
619		1259
		1260	if (loop_done)
		1261	break;
		1262	}
		1263
620	if (ev_loop_done != 2)	1264	if (loop_done != 2)
621	ev_loop_done = 0;	1265	loop_done = 0;
		1266	}
		1267
		1268	void
		1269	ev_unloop (EV_P_ int how)
		1270	{
		1271	loop_done = how;
622	}	1272	}
623		1273
624	/*****************************************************************************/	1274	/*****************************************************************************/
625		1275
626	static void	1276	inline void
627	wlist_add (WL *head, WL elem)	1277	wlist_add (WL *head, WL elem)
628	{	1278	{
629	elem->next = *head;	1279	elem->next = *head;
630	*head = elem;	1280	*head = elem;
631	}	1281	}
632		1282
633	static void	1283	inline void
634	wlist_del (WL *head, WL elem)	1284	wlist_del (WL *head, WL elem)
635	{	1285	{
636	while (*head)	1286	while (*head)
637	{	1287	{
638	if (*head == elem)	1288	if (*head == elem)
…		…
643		1293
644	head = &(*head)->next;	1294	head = &(*head)->next;
645	}	1295	}
646	}	1296	}
647		1297
648	static void	1298	inline void
649	ev_clear (W w)	1299	ev_clear_pending (EV_P_ W w)
650	{	1300	{
651	if (w->pending)	1301	if (w->pending)
652	{	1302	{
653	pendings [w->pending - 1].w = 0;	1303	pendings [ABSPRI (w)][w->pending - 1].w = 0;
654	w->pending = 0;	1304	w->pending = 0;
655	}	1305	}
656	}	1306	}
657		1307
658	static void	1308	inline void
659	ev_start (W w, int active)	1309	ev_start (EV_P_ W w, int active)
660	{	1310	{
		1311	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1312	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1313
661	w->active = active;	1314	w->active = active;
		1315	ev_ref (EV_A);
662	}	1316	}
663		1317
664	static void	1318	inline void
665	ev_stop (W w)	1319	ev_stop (EV_P_ W w)
666	{	1320	{
		1321	ev_unref (EV_A);
667	w->active = 0;	1322	w->active = 0;
668	}	1323	}
669		1324
670	/*****************************************************************************/	1325	/*****************************************************************************/
671		1326
672	void	1327	void
673	evio_start (struct ev_io *w)	1328	ev_io_start (EV_P_ struct ev_io *w)
674	{	1329	{
		1330	int fd = w->fd;
		1331
675	if (ev_is_active (w))	1332	if (ev_is_active (w))
676	return;	1333	return;
677		1334
678	int fd = w->fd;	1335	assert (("ev_io_start called with negative fd", fd >= 0));
679		1336
680	ev_start ((W)w, 1);	1337	ev_start (EV_A_ (W)w, 1);
681	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1338	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
682	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1339	wlist_add ((WL *)&anfds[fd].head, (WL)w);
683		1340
684	++fdchangecnt;	1341	fd_change (EV_A_ fd);
685	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
686	fdchanges [fdchangecnt - 1] = fd;
687	}	1342	}
688		1343
689	void	1344	void
690	evio_stop (struct ev_io *w)	1345	ev_io_stop (EV_P_ struct ev_io *w)
691	{	1346	{
692	ev_clear ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
693	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
694	return;	1349	return;
695		1350
		1351	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1352
696	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1353	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
697	ev_stop ((W)w);	1354	ev_stop (EV_A_ (W)w);
698		1355
699	++fdchangecnt;	1356	fd_change (EV_A_ w->fd);
700	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
701	fdchanges [fdchangecnt - 1] = w->fd;
702	}	1357	}
703		1358
704	void	1359	void
705	evtimer_start (struct ev_timer *w)	1360	ev_timer_start (EV_P_ struct ev_timer *w)
706	{	1361	{
707	if (ev_is_active (w))	1362	if (ev_is_active (w))
708	return;	1363	return;
709		1364
710	w->at += now;	1365	((WT)w)->at += mn_now;
711		1366
712	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1367	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
713		1368
714	ev_start ((W)w, ++timercnt);	1369	ev_start (EV_A_ (W)w, ++timercnt);
715	array_needsize (timers, timermax, timercnt, );	1370	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
716	timers [timercnt - 1] = w;	1371	timers [timercnt - 1] = w;
717	upheap ((WT *)timers, timercnt - 1);	1372	upheap ((WT *)timers, timercnt - 1);
718	}
719		1373
		1374	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1375	}
		1376
720	void	1377	void
721	evtimer_stop (struct ev_timer *w)	1378	ev_timer_stop (EV_P_ struct ev_timer *w)
722	{	1379	{
723	ev_clear ((W)w);	1380	ev_clear_pending (EV_A_ (W)w);
724	if (!ev_is_active (w))	1381	if (!ev_is_active (w))
725	return;	1382	return;
726		1383
		1384	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1385
727	if (w->active < timercnt--)	1386	if (((W)w)->active < timercnt--)
728	{	1387	{
729	timers [w->active - 1] = timers [timercnt];	1388	timers [((W)w)->active - 1] = timers [timercnt];
730	downheap ((WT *)timers, timercnt, w->active - 1);	1389	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
731	}	1390	}
732		1391
733	w->at = w->repeat;	1392	((WT)w)->at -= mn_now;
734		1393
735	ev_stop ((W)w);	1394	ev_stop (EV_A_ (W)w);
736	}	1395	}
737		1396
738	void	1397	void
739	evtimer_again (struct ev_timer *w)	1398	ev_timer_again (EV_P_ struct ev_timer *w)
740	{	1399	{
741	if (ev_is_active (w))	1400	if (ev_is_active (w))
742	{	1401	{
743	if (w->repeat)	1402	if (w->repeat)
744	{	1403	{
745	w->at = now + w->repeat;	1404	((WT)w)->at = mn_now + w->repeat;
746	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
747	}	1406	}
748	else	1407	else
749	evtimer_stop (w);	1408	ev_timer_stop (EV_A_ w);
750	}	1409	}
751	else if (w->repeat)	1410	else if (w->repeat)
		1411	{
		1412	w->at = w->repeat;
752	evtimer_start (w);	1413	ev_timer_start (EV_A_ w);
		1414	}
753	}	1415	}
754		1416
		1417	#if EV_PERIODICS
755	void	1418	void
756	evperiodic_start (struct ev_periodic *w)	1419	ev_periodic_start (EV_P_ struct ev_periodic *w)
757	{	1420	{
758	if (ev_is_active (w))	1421	if (ev_is_active (w))
759	return;	1422	return;
760		1423
761	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1424	if (w->reschedule_cb)
762		1425	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1426	else if (w->interval)
		1427	{
		1428	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
763	/* this formula differs from the one in periodic_reify because we do not always round up */	1429	/* this formula differs from the one in periodic_reify because we do not always round up */
764	if (w->interval)
765	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1430	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1431	}
766		1432
767	ev_start ((W)w, ++periodiccnt);	1433	ev_start (EV_A_ (W)w, ++periodiccnt);
768	array_needsize (periodics, periodicmax, periodiccnt, );	1434	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
769	periodics [periodiccnt - 1] = w;	1435	periodics [periodiccnt - 1] = w;
770	upheap ((WT *)periodics, periodiccnt - 1);	1436	upheap ((WT *)periodics, periodiccnt - 1);
771	}
772		1437
		1438	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1439	}
		1440
773	void	1441	void
774	evperiodic_stop (struct ev_periodic *w)	1442	ev_periodic_stop (EV_P_ struct ev_periodic *w)
775	{	1443	{
776	ev_clear ((W)w);	1444	ev_clear_pending (EV_A_ (W)w);
777	if (!ev_is_active (w))	1445	if (!ev_is_active (w))
778	return;	1446	return;
779		1447
		1448	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1449
780	if (w->active < periodiccnt--)	1450	if (((W)w)->active < periodiccnt--)
781	{	1451	{
782	periodics [w->active - 1] = periodics [periodiccnt];	1452	periodics [((W)w)->active - 1] = periodics [periodiccnt];
783	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1453	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
784	}	1454	}
785		1455
786	ev_stop ((W)w);	1456	ev_stop (EV_A_ (W)w);
787	}	1457	}
788		1458
789	void	1459	void
790	evsignal_start (struct ev_signal *w)	1460	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1461	{
		1462	/* TODO: use adjustheap and recalculation */
		1463	ev_periodic_stop (EV_A_ w);
		1464	ev_periodic_start (EV_A_ w);
		1465	}
		1466	#endif
		1467
		1468	void
		1469	ev_idle_start (EV_P_ struct ev_idle *w)
791	{	1470	{
792	if (ev_is_active (w))	1471	if (ev_is_active (w))
793	return;	1472	return;
794		1473
		1474	ev_start (EV_A_ (W)w, ++idlecnt);
		1475	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1476	idles [idlecnt - 1] = w;
		1477	}
		1478
		1479	void
		1480	ev_idle_stop (EV_P_ struct ev_idle *w)
		1481	{
		1482	ev_clear_pending (EV_A_ (W)w);
		1483	if (!ev_is_active (w))
		1484	return;
		1485
		1486	idles [((W)w)->active - 1] = idles [--idlecnt];
		1487	ev_stop (EV_A_ (W)w);
		1488	}
		1489
		1490	void
		1491	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1492	{
		1493	if (ev_is_active (w))
		1494	return;
		1495
		1496	ev_start (EV_A_ (W)w, ++preparecnt);
		1497	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1498	prepares [preparecnt - 1] = w;
		1499	}
		1500
		1501	void
		1502	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1503	{
		1504	ev_clear_pending (EV_A_ (W)w);
		1505	if (!ev_is_active (w))
		1506	return;
		1507
		1508	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1509	ev_stop (EV_A_ (W)w);
		1510	}
		1511
		1512	void
		1513	ev_check_start (EV_P_ struct ev_check *w)
		1514	{
		1515	if (ev_is_active (w))
		1516	return;
		1517
		1518	ev_start (EV_A_ (W)w, ++checkcnt);
		1519	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1520	checks [checkcnt - 1] = w;
		1521	}
		1522
		1523	void
		1524	ev_check_stop (EV_P_ struct ev_check *w)
		1525	{
		1526	ev_clear_pending (EV_A_ (W)w);
		1527	if (!ev_is_active (w))
		1528	return;
		1529
		1530	checks [((W)w)->active - 1] = checks [--checkcnt];
		1531	ev_stop (EV_A_ (W)w);
		1532	}
		1533
		1534	#ifndef SA_RESTART
		1535	# define SA_RESTART 0
		1536	#endif
		1537
		1538	void
		1539	ev_signal_start (EV_P_ struct ev_signal *w)
		1540	{
		1541	#if EV_MULTIPLICITY
		1542	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1543	#endif
		1544	if (ev_is_active (w))
		1545	return;
		1546
		1547	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1548
795	ev_start ((W)w, 1);	1549	ev_start (EV_A_ (W)w, 1);
796	array_needsize (signals, signalmax, w->signum, signals_init);	1550	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
797	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1551	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
798		1552
799	if (!w->next)	1553	if (!((WL)w)->next)
800	{	1554	{
		1555	#if _WIN32
		1556	signal (w->signum, sighandler);
		1557	#else
801	struct sigaction sa;	1558	struct sigaction sa;
802	sa.sa_handler = sighandler;	1559	sa.sa_handler = sighandler;
803	sigfillset (&sa.sa_mask);	1560	sigfillset (&sa.sa_mask);
804	sa.sa_flags = 0;	1561	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
805	sigaction (w->signum, &sa, 0);	1562	sigaction (w->signum, &sa, 0);
		1563	#endif
806	}	1564	}
807	}	1565	}
808		1566
809	void	1567	void
810	evsignal_stop (struct ev_signal *w)	1568	ev_signal_stop (EV_P_ struct ev_signal *w)
811	{	1569	{
812	ev_clear ((W)w);	1570	ev_clear_pending (EV_A_ (W)w);
813	if (!ev_is_active (w))	1571	if (!ev_is_active (w))
814	return;	1572	return;
815		1573
816	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1574	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
817	ev_stop ((W)w);	1575	ev_stop (EV_A_ (W)w);
818		1576
819	if (!signals [w->signum - 1].head)	1577	if (!signals [w->signum - 1].head)
820	signal (w->signum, SIG_DFL);	1578	signal (w->signum, SIG_DFL);
821	}	1579	}
822		1580
823	void evidle_start (struct ev_idle *w)	1581	void
		1582	ev_child_start (EV_P_ struct ev_child *w)
824	{	1583	{
		1584	#if EV_MULTIPLICITY
		1585	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1586	#endif
825	if (ev_is_active (w))	1587	if (ev_is_active (w))
826	return;	1588	return;
827		1589
828	ev_start ((W)w, ++idlecnt);	1590	ev_start (EV_A_ (W)w, 1);
829	array_needsize (idles, idlemax, idlecnt, );	1591	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
830	idles [idlecnt - 1] = w;
831	}	1592	}
832		1593
833	void evidle_stop (struct ev_idle *w)	1594	void
		1595	ev_child_stop (EV_P_ struct ev_child *w)
834	{	1596	{
835	ev_clear ((W)w);	1597	ev_clear_pending (EV_A_ (W)w);
836	if (ev_is_active (w))	1598	if (!ev_is_active (w))
837	return;	1599	return;
838		1600
839	idles [w->active - 1] = idles [--idlecnt];	1601	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
840	ev_stop ((W)w);	1602	ev_stop (EV_A_ (W)w);
841	}
842
843	void evprepare_start (struct ev_prepare *w)
844	{
845	if (ev_is_active (w))
846	return;
847
848	ev_start ((W)w, ++preparecnt);
849	array_needsize (prepares, preparemax, preparecnt, );
850	prepares [preparecnt - 1] = w;
851	}
852
853	void evprepare_stop (struct ev_prepare *w)
854	{
855	ev_clear ((W)w);
856	if (ev_is_active (w))
857	return;
858
859	prepares [w->active - 1] = prepares [--preparecnt];
860	ev_stop ((W)w);
861	}
862
863	void evcheck_start (struct ev_check *w)
864	{
865	if (ev_is_active (w))
866	return;
867
868	ev_start ((W)w, ++checkcnt);
869	array_needsize (checks, checkmax, checkcnt, );
870	checks [checkcnt - 1] = w;
871	}
872
873	void evcheck_stop (struct ev_check *w)
874	{
875	ev_clear ((W)w);
876	if (ev_is_active (w))
877	return;
878
879	checks [w->active - 1] = checks [--checkcnt];
880	ev_stop ((W)w);
881	}	1603	}
882		1604
883	/*****************************************************************************/	1605	/*****************************************************************************/
884		1606
885	struct ev_once	1607	struct ev_once
…		…
889	void (*cb)(int revents, void *arg);	1611	void (*cb)(int revents, void *arg);
890	void *arg;	1612	void *arg;
891	};	1613	};
892		1614
893	static void	1615	static void
894	once_cb (struct ev_once *once, int revents)	1616	once_cb (EV_P_ struct ev_once *once, int revents)
895	{	1617	{
896	void (*cb)(int revents, void *arg) = once->cb;	1618	void (*cb)(int revents, void *arg) = once->cb;
897	void *arg = once->arg;	1619	void *arg = once->arg;
898		1620
899	evio_stop (&once->io);	1621	ev_io_stop (EV_A_ &once->io);
900	evtimer_stop (&once->to);	1622	ev_timer_stop (EV_A_ &once->to);
901	free (once);	1623	ev_free (once);
902		1624
903	cb (revents, arg);	1625	cb (revents, arg);
904	}	1626	}
905		1627
906	static void	1628	static void
907	once_cb_io (struct ev_io *w, int revents)	1629	once_cb_io (EV_P_ struct ev_io *w, int revents)
908	{	1630	{
909	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1631	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
910	}	1632	}
911		1633
912	static void	1634	static void
913	once_cb_to (struct ev_timer *w, int revents)	1635	once_cb_to (EV_P_ struct ev_timer *w, int revents)
914	{	1636	{
915	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1637	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
916	}	1638	}
917		1639
918	void	1640	void
919	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1641	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
920	{	1642	{
921	struct ev_once *once = malloc (sizeof (struct ev_once));	1643	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
922		1644
923	if (!once)	1645	if (!once)
924	cb (EV_ERROR, arg);	1646	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
925	else	1647	else
926	{	1648	{
927	once->cb = cb;	1649	once->cb = cb;
928	once->arg = arg;	1650	once->arg = arg;
929		1651
930	evw_init (&once->io, once_cb_io);	1652	ev_init (&once->io, once_cb_io);
931
932	if (fd >= 0)	1653	if (fd >= 0)
933	{	1654	{
934	evio_set (&once->io, fd, events);	1655	ev_io_set (&once->io, fd, events);
935	evio_start (&once->io);	1656	ev_io_start (EV_A_ &once->io);
936	}	1657	}
937		1658
938	evw_init (&once->to, once_cb_to);	1659	ev_init (&once->to, once_cb_to);
939
940	if (timeout >= 0.)	1660	if (timeout >= 0.)
941	{	1661	{
942	evtimer_set (&once->to, timeout, 0.);	1662	ev_timer_set (&once->to, timeout, 0.);
943	evtimer_start (&once->to);	1663	ev_timer_start (EV_A_ &once->to);
944	}	1664	}
945	}	1665	}
946	}	1666	}
947		1667
948	/*****************************************************************************/	1668	#ifdef __cplusplus
949
950	#if 0
951
952	struct ev_io wio;
953
954	static void
955	sin_cb (struct ev_io *w, int revents)
956	{
957	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
958	}	1669	}
959
960	static void
961	ocb (struct ev_timer *w, int revents)
962	{
963	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
964	evtimer_stop (w);
965	evtimer_start (w);
966	}
967
968	static void
969	scb (struct ev_signal *w, int revents)
970	{
971	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
972	evio_stop (&wio);
973	evio_start (&wio);
974	}
975
976	static void
977	gcb (struct ev_signal *w, int revents)
978	{
979	fprintf (stderr, "generic %x\n", revents);
980
981	}
982
983	int main (void)
984	{
985	ev_init (0);
986
987	evio_init (&wio, sin_cb, 0, EV_READ);
988	evio_start (&wio);
989
990	struct ev_timer t[10000];
991
992	#if 0
993	int i;
994	for (i = 0; i < 10000; ++i)
995	{
996	struct ev_timer *w = t + i;
997	evw_init (w, ocb, i);
998	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
999	evtimer_start (w);
1000	if (drand48 () < 0.5)
1001	evtimer_stop (w);
1002	}
1003	#endif	1670	#endif
1004		1671
1005	struct ev_timer t1;
1006	evtimer_init (&t1, ocb, 5, 10);
1007	evtimer_start (&t1);
1008
1009	struct ev_signal sig;
1010	evsignal_init (&sig, scb, SIGQUIT);
1011	evsignal_start (&sig);
1012
1013	struct ev_check cw;
1014	evcheck_init (&cw, gcb);
1015	evcheck_start (&cw);
1016
1017	struct ev_idle iw;
1018	evidle_init (&iw, gcb);
1019	evidle_start (&iw);
1020
1021	ev_loop (0);
1022
1023	return 0;
1024	}
1025
1026	#endif
1027
1028
1029
1030

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