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Comparing libev/ev.c (file contents):
Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.91 by root, Sun Nov 11 00:06:48 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	# define EV_USE_MONOTONIC 1
		41	# define EV_USE_REALTIME 1
		42	# endif
		43
		44	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		45	# define EV_USE_SELECT 1
		46	# endif
		47
		48	# if HAVE_POLL && HAVE_POLL_H
		49	# define EV_USE_POLL 1
		50	# endif
		51
		52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		53	# define EV_USE_EPOLL 1
		54	# endif
		55
		56	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		57	# define EV_USE_KQUEUE 1
		58	# endif
		59
		60	#endif
		61
30	#include <math.h>	62	#include <math.h>
31	#include <stdlib.h>	63	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	64	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	65	#include <stddef.h>
36		66
37	#include <stdio.h>	67	#include <stdio.h>
38		68
39	#include <assert.h>	69	#include <assert.h>
40	#include <errno.h>	70	#include <errno.h>
41	#include <sys/types.h>	71	#include <sys/types.h>
42	#include <sys/wait.h>
43	#include <sys/time.h>
44	#include <time.h>	72	#include <time.h>
45		73
		74	#include <signal.h>
		75
		76	#ifndef WIN32
		77	# include <unistd.h>
		78	# include <sys/time.h>
		79	# include <sys/wait.h>
		80	#endif
		81	/**/
		82
46	#ifndef HAVE_MONOTONIC	83	#ifndef EV_USE_MONOTONIC
47	# ifdef CLOCK_MONOTONIC
48	# define HAVE_MONOTONIC 1	84	# define EV_USE_MONOTONIC 1
		85	#endif
		86
		87	#ifndef EV_USE_SELECT
		88	# define EV_USE_SELECT 1
		89	#endif
		90
		91	#ifndef EV_USE_POLL
		92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		93	#endif
		94
		95	#ifndef EV_USE_EPOLL
		96	# define EV_USE_EPOLL 0
		97	#endif
		98
		99	#ifndef EV_USE_KQUEUE
		100	# define EV_USE_KQUEUE 0
		101	#endif
		102
		103	#ifndef EV_USE_WIN32
		104	# ifdef WIN32
		105	# define EV_USE_WIN32 0 /* it does not exist, use select */
		106	# undef EV_USE_SELECT
		107	# define EV_USE_SELECT 1
		108	# else
		109	# define EV_USE_WIN32 0
49	# endif	110	# endif
50	#endif	111	#endif
51		112
52	#ifndef HAVE_SELECT
53	# define HAVE_SELECT 1
54	#endif
55
56	#ifndef HAVE_EPOLL
57	# define HAVE_EPOLL 0
58	#endif
59
60	#ifndef HAVE_REALTIME	113	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	114	# define EV_USE_REALTIME 1
62	#endif	115	#endif
		116
		117	/**/
		118
		119	#ifndef CLOCK_MONOTONIC
		120	# undef EV_USE_MONOTONIC
		121	# define EV_USE_MONOTONIC 0
		122	#endif
		123
		124	#ifndef CLOCK_REALTIME
		125	# undef EV_USE_REALTIME
		126	# define EV_USE_REALTIME 0
		127	#endif
		128
		129	/**/
63		130
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	131	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	132	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	133	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		134	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
67		135
		136	#ifdef EV_H
		137	# include EV_H
		138	#else
68	#include "ev.h"	139	# include "ev.h"
		140	#endif
		141
		142	#if __GNUC__ >= 3
		143	# define expect(expr,value) __builtin_expect ((expr),(value))
		144	# define inline inline
		145	#else
		146	# define expect(expr,value) (expr)
		147	# define inline static
		148	#endif
		149
		150	#define expect_false(expr) expect ((expr) != 0, 0)
		151	#define expect_true(expr) expect ((expr) != 0, 1)
		152
		153	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		154	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
69		155
70	typedef struct ev_watcher *W;	156	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	157	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	158	typedef struct ev_watcher_time *WT;
73		159
74	static ev_tstamp now, diff; /* monotonic clock */	160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
75	ev_tstamp ev_now;
76	int ev_method;
77		161
78	static int have_monotonic; /* runtime */	162	#include "ev_win32.c"
79
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		163
84	/*****************************************************************************/	164	/*****************************************************************************/
85		165
86	ev_tstamp	166	static void (*syserr_cb)(const char *msg);
		167
		168	void ev_set_syserr_cb (void (*cb)(const char *msg))
		169	{
		170	syserr_cb = cb;
		171	}
		172
		173	static void
		174	syserr (const char *msg)
		175	{
		176	if (!msg)
		177	msg = "(libev) system error";
		178
		179	if (syserr_cb)
		180	syserr_cb (msg);
		181	else
		182	{
		183	perror (msg);
		184	abort ();
		185	}
		186	}
		187
		188	static void *(*alloc)(void *ptr, long size);
		189
		190	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		191	{
		192	alloc = cb;
		193	}
		194
		195	static void *
		196	ev_realloc (void *ptr, long size)
		197	{
		198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		199
		200	if (!ptr && size)
		201	{
		202	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		203	abort ();
		204	}
		205
		206	return ptr;
		207	}
		208
		209	#define ev_malloc(size) ev_realloc (0, (size))
		210	#define ev_free(ptr) ev_realloc ((ptr), 0)
		211
		212	/*****************************************************************************/
		213
		214	typedef struct
		215	{
		216	WL head;
		217	unsigned char events;
		218	unsigned char reify;
		219	} ANFD;
		220
		221	typedef struct
		222	{
		223	W w;
		224	int events;
		225	} ANPENDING;
		226
		227	#if EV_MULTIPLICITY
		228
		229	struct ev_loop
		230	{
		231	ev_tstamp ev_rt_now;
		232	#define VAR(name,decl) decl;
		233	#include "ev_vars.h"
		234	#undef VAR
		235	};
		236	#include "ev_wrap.h"
		237
		238	struct ev_loop default_loop_struct;
		239	static struct ev_loop *default_loop;
		240
		241	#else
		242
		243	ev_tstamp ev_rt_now;
		244	#define VAR(name,decl) static decl;
		245	#include "ev_vars.h"
		246	#undef VAR
		247
		248	static int default_loop;
		249
		250	#endif
		251
		252	/*****************************************************************************/
		253
		254	inline ev_tstamp
87	ev_time (void)	255	ev_time (void)
88	{	256	{
89	#if HAVE_REALTIME	257	#if EV_USE_REALTIME
90	struct timespec ts;	258	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	259	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	260	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	261	#else
94	struct timeval tv;	262	struct timeval tv;
95	gettimeofday (&tv, 0);	263	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	264	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	265	#endif
98	}	266	}
99		267
100	static ev_tstamp	268	inline ev_tstamp
101	get_clock (void)	269	get_clock (void)
102	{	270	{
103	#if HAVE_MONOTONIC	271	#if EV_USE_MONOTONIC
104	if (have_monotonic)	272	if (expect_true (have_monotonic))
105	{	273	{
106	struct timespec ts;	274	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	275	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	276	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	277	}
110	#endif	278	#endif
111		279
112	return ev_time ();	280	return ev_time ();
113	}	281	}
114		282
		283	#if EV_MULTIPLICITY
		284	ev_tstamp
		285	ev_now (EV_P)
		286	{
		287	return ev_rt_now;
		288	}
		289	#endif
		290
		291	#define array_roundsize(type,n) ((n) | 4 & ~3)
		292
115	#define array_needsize(base,cur,cnt,init) \	293	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	294	if (expect_false ((cnt) > cur)) \
117	{ \	295	{ \
118	int newcnt = cur; \	296	int newcnt = cur; \
119	do \	297	do \
120	{ \	298	{ \
121	newcnt = (newcnt << 1) | 4 & ~3; \	299	newcnt = array_roundsize (type, newcnt << 1); \
122	} \	300	} \
123	while ((cnt) > newcnt); \	301	while ((cnt) > newcnt); \
124	\	302	\
125	base = realloc (base, sizeof (*base) * (newcnt)); \	303	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
126	init (base + cur, newcnt - cur); \	304	init (base + cur, newcnt - cur); \
127	cur = newcnt; \	305	cur = newcnt; \
128	}	306	}
		307
		308	#define array_slim(type,stem) \
		309	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		310	{ \
		311	stem ## max = array_roundsize (stem ## cnt >> 1); \
		312	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		314	}
		315
		316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		318	#define array_free_microshit(stem) \
		319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		320
		321	#define array_free(stem, idx) \
		322	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		323
130	/*****************************************************************************/	324	/*****************************************************************************/
131
132	typedef struct
133	{
134	struct ev_io *head;
135	int events;
136	} ANFD;
137
138	static ANFD *anfds;
139	static int anfdmax;
140		325
141	static void	326	static void
142	anfds_init (ANFD *base, int count)	327	anfds_init (ANFD *base, int count)
143	{	328	{
144	while (count--)	329	while (count--)
145	{	330	{
146	base->head = 0;	331	base->head = 0;
147	base->events = EV_NONE;	332	base->events = EV_NONE;
		333	base->reify = 0;
		334
148	++base;	335	++base;
149	}	336	}
150	}	337	}
151		338
152	typedef struct	339	void
		340	ev_feed_event (EV_P_ void *w, int revents)
153	{	341	{
154	W w;	342	W w_ = (W)w;
155	int events;
156	} ANPENDING;
157		343
158	static ANPENDING *pendings;	344	if (w_->pending)
159	static int pendingmax, pendingcnt;
160
161	static void
162	event (W w, int events)
163	{
164	if (w->active)
165	{	345	{
166	w->pending = ++pendingcnt;
167	array_needsize (pendings, pendingmax, pendingcnt, );
168	pendings [pendingcnt - 1].w = w;
169	pendings [pendingcnt - 1].events = events;	346	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		347	return;
170	}	348	}
171	}
172		349
		350	w_->pending = ++pendingcnt [ABSPRI (w_)];
		351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		354	}
		355
173	static void	356	static void
174	queue_events (W *events, int eventcnt, int type)	357	queue_events (EV_P_ W *events, int eventcnt, int type)
175	{	358	{
176	int i;	359	int i;
177		360
178	for (i = 0; i < eventcnt; ++i)	361	for (i = 0; i < eventcnt; ++i)
179	event (events [i], type);	362	ev_feed_event (EV_A_ events [i], type);
180	}	363	}
181		364
182	static void	365	inline void
183	fd_event (int fd, int events)	366	fd_event (EV_P_ int fd, int revents)
184	{	367	{
185	ANFD *anfd = anfds + fd;	368	ANFD *anfd = anfds + fd;
186	struct ev_io *w;	369	struct ev_io *w;
187		370
188	for (w = anfd->head; w; w = w->next)	371	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
189	{	372	{
190	int ev = w->events & events;	373	int ev = w->events & revents;
191		374
192	if (ev)	375	if (ev)
193	event ((W)w, ev);	376	ev_feed_event (EV_A_ (W)w, ev);
194	}	377	}
		378	}
		379
		380	void
		381	ev_feed_fd_event (EV_P_ int fd, int revents)
		382	{
		383	fd_event (EV_A_ fd, revents);
195	}	384	}
196		385
197	/*****************************************************************************/	386	/*****************************************************************************/
198		387
199	static int *fdchanges;
200	static int fdchangemax, fdchangecnt;
201
202	static void	388	static void
203	fd_reify (void)	389	fd_reify (EV_P)
204	{	390	{
205	int i;	391	int i;
206		392
207	for (i = 0; i < fdchangecnt; ++i)	393	for (i = 0; i < fdchangecnt; ++i)
208	{	394	{
…		…
210	ANFD *anfd = anfds + fd;	396	ANFD *anfd = anfds + fd;
211	struct ev_io *w;	397	struct ev_io *w;
212		398
213	int events = 0;	399	int events = 0;
214		400
215	for (w = anfd->head; w; w = w->next)	401	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
216	events |= w->events;	402	events |= w->events;
217		403
218	anfd->events &= ~EV_REIFY;	404	anfd->reify = 0;
219		405
220	if (anfd->events != events)
221	{
222	method_modify (fd, anfd->events, events);	406	method_modify (EV_A_ fd, anfd->events, events);
223	anfd->events = events;	407	anfd->events = events;
224	}
225	}	408	}
226		409
227	fdchangecnt = 0;	410	fdchangecnt = 0;
228	}	411	}
229		412
230	static void	413	static void
231	fd_change (int fd)	414	fd_change (EV_P_ int fd)
232	{	415	{
233	if (anfds [fd].events & EV_REIFY)	416	if (anfds [fd].reify)
234	return;	417	return;
235		418
236	anfds [fd].events |= EV_REIFY;	419	anfds [fd].reify = 1;
237		420
238	++fdchangecnt;	421	++fdchangecnt;
239	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
240	fdchanges [fdchangecnt - 1] = fd;	423	fdchanges [fdchangecnt - 1] = fd;
241	}	424	}
242		425
		426	static void
		427	fd_kill (EV_P_ int fd)
		428	{
		429	struct ev_io *w;
		430
		431	while ((w = (struct ev_io *)anfds [fd].head))
		432	{
		433	ev_io_stop (EV_A_ w);
		434	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		435	}
		436	}
		437
		438	static int
		439	fd_valid (int fd)
		440	{
		441	#ifdef WIN32
		442	return !!win32_get_osfhandle (fd);
		443	#else
		444	return fcntl (fd, F_GETFD) != -1;
		445	#endif
		446	}
		447
243	/* called on EBADF to verify fds */	448	/* called on EBADF to verify fds */
244	static void	449	static void
245	fd_recheck (void)	450	fd_ebadf (EV_P)
246	{	451	{
247	int fd;	452	int fd;
248		453
249	for (fd = 0; fd < anfdmax; ++fd)	454	for (fd = 0; fd < anfdmax; ++fd)
250	if (anfds [fd].events)	455	if (anfds [fd].events)
251	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	456	if (!fd_valid (fd) == -1 && errno == EBADF)
252	while (anfds [fd].head)	457	fd_kill (EV_A_ fd);
		458	}
		459
		460	/* called on ENOMEM in select/poll to kill some fds and retry */
		461	static void
		462	fd_enomem (EV_P)
		463	{
		464	int fd;
		465
		466	for (fd = anfdmax; fd--; )
		467	if (anfds [fd].events)
253	{	468	{
254	event ((W)anfds [fd].head, EV_ERROR);	469	fd_kill (EV_A_ fd);
255	ev_io_stop (anfds [fd].head);	470	return;
256	}	471	}
		472	}
		473
		474	/* usually called after fork if method needs to re-arm all fds from scratch */
		475	static void
		476	fd_rearm_all (EV_P)
		477	{
		478	int fd;
		479
		480	/* this should be highly optimised to not do anything but set a flag */
		481	for (fd = 0; fd < anfdmax; ++fd)
		482	if (anfds [fd].events)
		483	{
		484	anfds [fd].events = 0;
		485	fd_change (EV_A_ fd);
		486	}
257	}	487	}
258		488
259	/*****************************************************************************/	489	/*****************************************************************************/
260		490
261	static struct ev_timer **timers;
262	static int timermax, timercnt;
263
264	static struct ev_periodic **periodics;
265	static int periodicmax, periodiccnt;
266
267	static void	491	static void
268	upheap (WT *timers, int k)	492	upheap (WT *heap, int k)
269	{	493	{
270	WT w = timers [k];	494	WT w = heap [k];
271		495
272	while (k && timers [k >> 1]->at > w->at)	496	while (k && heap [k >> 1]->at > w->at)
273	{	497	{
274	timers [k] = timers [k >> 1];	498	heap [k] = heap [k >> 1];
275	timers [k]->active = k + 1;	499	((W)heap [k])->active = k + 1;
276	k >>= 1;	500	k >>= 1;
277	}	501	}
278		502
279	timers [k] = w;	503	heap [k] = w;
280	timers [k]->active = k + 1;	504	((W)heap [k])->active = k + 1;
281		505
282	}	506	}
283		507
284	static void	508	static void
285	downheap (WT *timers, int N, int k)	509	downheap (WT *heap, int N, int k)
286	{	510	{
287	WT w = timers [k];	511	WT w = heap [k];
288		512
289	while (k < (N >> 1))	513	while (k < (N >> 1))
290	{	514	{
291	int j = k << 1;	515	int j = k << 1;
292		516
293	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	517	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
294	++j;	518	++j;
295		519
296	if (w->at <= timers [j]->at)	520	if (w->at <= heap [j]->at)
297	break;	521	break;
298		522
299	timers [k] = timers [j];	523	heap [k] = heap [j];
300	timers [k]->active = k + 1;	524	((W)heap [k])->active = k + 1;
301	k = j;	525	k = j;
302	}	526	}
303		527
304	timers [k] = w;	528	heap [k] = w;
305	timers [k]->active = k + 1;	529	((W)heap [k])->active = k + 1;
		530	}
		531
		532	inline void
		533	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		534	{
		535	ev_tstamp old_at = heap [k]->at;
		536	heap [k]->at = at;
		537
		538	if (old_at < at)
		539	downheap (heap, N, k);
		540	else
		541	upheap (heap, k);
306	}	542	}
307		543
308	/*****************************************************************************/	544	/*****************************************************************************/
309		545
310	typedef struct	546	typedef struct
311	{	547	{
312	struct ev_signal *head;	548	WL head;
313	sig_atomic_t gotsig;	549	sig_atomic_t volatile gotsig;
314	} ANSIG;	550	} ANSIG;
315		551
316	static ANSIG *signals;	552	static ANSIG *signals;
317	static int signalmax;	553	static int signalmax;
318		554
319	static int sigpipe [2];	555	static int sigpipe [2];
320	static sig_atomic_t gotsig;	556	static sig_atomic_t volatile gotsig;
321	static struct ev_io sigev;	557	static struct ev_io sigev;
322		558
323	static void	559	static void
324	signals_init (ANSIG *base, int count)	560	signals_init (ANSIG *base, int count)
325	{	561	{
326	while (count--)	562	while (count--)
327	{	563	{
328	base->head = 0;	564	base->head = 0;
329	base->gotsig = 0;	565	base->gotsig = 0;
		566
330	++base;	567	++base;
331	}	568	}
332	}	569	}
333		570
334	static void	571	static void
335	sighandler (int signum)	572	sighandler (int signum)
336	{	573	{
		574	#if WIN32
		575	signal (signum, sighandler);
		576	#endif
		577
337	signals [signum - 1].gotsig = 1;	578	signals [signum - 1].gotsig = 1;
338		579
339	if (!gotsig)	580	if (!gotsig)
340	{	581	{
		582	int old_errno = errno;
341	gotsig = 1;	583	gotsig = 1;
		584	#ifdef WIN32
		585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		586	#else
342	write (sigpipe [1], &gotsig, 1);	587	write (sigpipe [1], &signum, 1);
		588	#endif
		589	errno = old_errno;
343	}	590	}
344	}	591	}
345		592
		593	void
		594	ev_feed_signal_event (EV_P_ int signum)
		595	{
		596	WL w;
		597
		598	#if EV_MULTIPLICITY
		599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		600	#endif
		601
		602	--signum;
		603
		604	if (signum < 0 || signum >= signalmax)
		605	return;
		606
		607	signals [signum].gotsig = 0;
		608
		609	for (w = signals [signum].head; w; w = w->next)
		610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		611	}
		612
346	static void	613	static void
347	sigcb (struct ev_io *iow, int revents)	614	sigcb (EV_P_ struct ev_io *iow, int revents)
348	{	615	{
349	struct ev_signal *w;
350	int sig;	616	int signum;
351		617
		618	#ifdef WIN32
		619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		620	#else
		621	read (sigpipe [0], &revents, 1);
		622	#endif
352	gotsig = 0;	623	gotsig = 0;
353	read (sigpipe [0], &revents, 1);
354		624
355	for (sig = signalmax; sig--; )	625	for (signum = signalmax; signum--; )
356	if (signals [sig].gotsig)	626	if (signals [signum].gotsig)
357	{	627	ev_feed_signal_event (EV_A_ signum + 1);
358	signals [sig].gotsig = 0;
359
360	for (w = signals [sig].head; w; w = w->next)
361	event ((W)w, EV_SIGNAL);
362	}
363	}	628	}
364		629
365	static void	630	static void
366	siginit (void)	631	siginit (EV_P)
367	{	632	{
		633	#ifndef WIN32
368	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	634	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
369	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	635	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
370		636
371	/* rather than sort out wether we really need nb, set it */	637	/* rather than sort out wether we really need nb, set it */
372	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	638	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
373	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	639	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		640	#endif
374		641
375	ev_io_set (&sigev, sigpipe [0], EV_READ);	642	ev_io_set (&sigev, sigpipe [0], EV_READ);
376	ev_io_start (&sigev);	643	ev_io_start (EV_A_ &sigev);
		644	ev_unref (EV_A); /* child watcher should not keep loop alive */
377	}	645	}
378		646
379	/*****************************************************************************/	647	/*****************************************************************************/
380		648
381	static struct ev_idle **idles;
382	static int idlemax, idlecnt;
383
384	static struct ev_prepare **prepares;
385	static int preparemax, preparecnt;
386
387	static struct ev_check **checks;
388	static int checkmax, checkcnt;
389
390	/*****************************************************************************/
391
392	static struct ev_child *childs [PID_HASHSIZE];	649	static struct ev_child *childs [PID_HASHSIZE];
		650
		651	#ifndef WIN32
		652
393	static struct ev_signal childev;	653	static struct ev_signal childev;
394		654
395	#ifndef WCONTINUED	655	#ifndef WCONTINUED
396	# define WCONTINUED 0	656	# define WCONTINUED 0
397	#endif	657	#endif
398		658
399	static void	659	static void
400	childcb (struct ev_signal *sw, int revents)	660	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
401	{	661	{
402	struct ev_child *w;	662	struct ev_child *w;
		663
		664	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		665	if (w->pid == pid || !w->pid)
		666	{
		667	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		668	w->rpid = pid;
		669	w->rstatus = status;
		670	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		671	}
		672	}
		673
		674	static void
		675	childcb (EV_P_ struct ev_signal *sw, int revents)
		676	{
403	int pid, status;	677	int pid, status;
404		678
405	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	679	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
406	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	680	{
407	if (w->pid == pid || w->pid == -1)	681	/* make sure we are called again until all childs have been reaped */
408	{	682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
409	w->status = status;	683
410	event ((W)w, EV_CHILD);	684	child_reap (EV_A_ sw, pid, pid, status);
411	}	685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		686	}
412	}	687	}
		688
		689	#endif
413		690
414	/*****************************************************************************/	691	/*****************************************************************************/
415		692
		693	#if EV_USE_KQUEUE
		694	# include "ev_kqueue.c"
		695	#endif
416	#if HAVE_EPOLL	696	#if EV_USE_EPOLL
417	# include "ev_epoll.c"	697	# include "ev_epoll.c"
418	#endif	698	#endif
		699	#if EV_USE_POLL
		700	# include "ev_poll.c"
		701	#endif
419	#if HAVE_SELECT	702	#if EV_USE_SELECT
420	# include "ev_select.c"	703	# include "ev_select.c"
421	#endif	704	#endif
422		705
423	int	706	int
424	ev_version_major (void)	707	ev_version_major (void)
…		…
430	ev_version_minor (void)	713	ev_version_minor (void)
431	{	714	{
432	return EV_VERSION_MINOR;	715	return EV_VERSION_MINOR;
433	}	716	}
434		717
435	int ev_init (int flags)	718	/* return true if we are running with elevated privileges and should ignore env variables */
		719	static int
		720	enable_secure (void)
436	{	721	{
		722	#ifdef WIN32
		723	return 0;
		724	#else
		725	return getuid () != geteuid ()
		726	|| getgid () != getegid ();
		727	#endif
		728	}
		729
		730	int
		731	ev_method (EV_P)
		732	{
		733	return method;
		734	}
		735
		736	static void
		737	loop_init (EV_P_ int methods)
		738	{
437	if (!ev_method)	739	if (!method)
438	{	740	{
439	#if HAVE_MONOTONIC	741	#if EV_USE_MONOTONIC
440	{	742	{
441	struct timespec ts;	743	struct timespec ts;
442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
443	have_monotonic = 1;	745	have_monotonic = 1;
444	}	746	}
445	#endif	747	#endif
446		748
447	ev_now = ev_time ();	749	ev_rt_now = ev_time ();
448	now = get_clock ();	750	mn_now = get_clock ();
		751	now_floor = mn_now;
449	diff = ev_now - now;	752	rtmn_diff = ev_rt_now - mn_now;
450		753
		754	if (methods == EVMETHOD_AUTO)
		755	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		756	methods = atoi (getenv ("LIBEV_METHODS"));
		757	else
		758	methods = EVMETHOD_ANY;
		759
		760	method = 0;
		761	#if EV_USE_WIN32
		762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		763	#endif
		764	#if EV_USE_KQUEUE
		765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		766	#endif
		767	#if EV_USE_EPOLL
		768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		769	#endif
		770	#if EV_USE_POLL
		771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		772	#endif
		773	#if EV_USE_SELECT
		774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
		775	#endif
		776
		777	ev_init (&sigev, sigcb);
		778	ev_set_priority (&sigev, EV_MAXPRI);
		779	}
		780	}
		781
		782	void
		783	loop_destroy (EV_P)
		784	{
		785	int i;
		786
		787	#if EV_USE_WIN32
		788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		789	#endif
		790	#if EV_USE_KQUEUE
		791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		792	#endif
		793	#if EV_USE_EPOLL
		794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		795	#endif
		796	#if EV_USE_POLL
		797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		798	#endif
		799	#if EV_USE_SELECT
		800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		801	#endif
		802
		803	for (i = NUMPRI; i--; )
		804	array_free (pending, [i]);
		805
		806	/* have to use the microsoft-never-gets-it-right macro */
		807	array_free_microshit (fdchange);
		808	array_free_microshit (timer);
		809	array_free_microshit (periodic);
		810	array_free_microshit (idle);
		811	array_free_microshit (prepare);
		812	array_free_microshit (check);
		813
		814	method = 0;
		815	}
		816
		817	static void
		818	loop_fork (EV_P)
		819	{
		820	#if EV_USE_EPOLL
		821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		822	#endif
		823	#if EV_USE_KQUEUE
		824	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		825	#endif
		826
		827	if (ev_is_active (&sigev))
		828	{
		829	/* default loop */
		830
		831	ev_ref (EV_A);
		832	ev_io_stop (EV_A_ &sigev);
		833	close (sigpipe [0]);
		834	close (sigpipe [1]);
		835
		836	while (pipe (sigpipe))
		837	syserr ("(libev) error creating pipe");
		838
		839	siginit (EV_A);
		840	}
		841
		842	postfork = 0;
		843	}
		844
		845	#if EV_MULTIPLICITY
		846	struct ev_loop *
		847	ev_loop_new (int methods)
		848	{
		849	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		850
		851	memset (loop, 0, sizeof (struct ev_loop));
		852
		853	loop_init (EV_A_ methods);
		854
		855	if (ev_method (EV_A))
		856	return loop;
		857
		858	return 0;
		859	}
		860
		861	void
		862	ev_loop_destroy (EV_P)
		863	{
		864	loop_destroy (EV_A);
		865	ev_free (loop);
		866	}
		867
		868	void
		869	ev_loop_fork (EV_P)
		870	{
		871	postfork = 1;
		872	}
		873
		874	#endif
		875
		876	#if EV_MULTIPLICITY
		877	struct ev_loop *
		878	#else
		879	int
		880	#endif
		881	ev_default_loop (int methods)
		882	{
		883	if (sigpipe [0] == sigpipe [1])
451	if (pipe (sigpipe))	884	if (pipe (sigpipe))
452	return 0;	885	return 0;
453		886
454	ev_method = EVMETHOD_NONE;	887	if (!default_loop)
455	#if HAVE_EPOLL	888	{
456	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	889	#if EV_MULTIPLICITY
		890	struct ev_loop *loop = default_loop = &default_loop_struct;
		891	#else
		892	default_loop = 1;
457	#endif	893	#endif
458	#if HAVE_SELECT
459	if (ev_method == EVMETHOD_NONE) select_init (flags);
460	#endif
461		894
		895	loop_init (EV_A_ methods);
		896
462	if (ev_method)	897	if (ev_method (EV_A))
463	{	898	{
464	ev_watcher_init (&sigev, sigcb);
465	siginit ();	899	siginit (EV_A);
466		900
		901	#ifndef WIN32
467	ev_signal_init (&childev, childcb, SIGCHLD);	902	ev_signal_init (&childev, childcb, SIGCHLD);
		903	ev_set_priority (&childev, EV_MAXPRI);
468	ev_signal_start (&childev);	904	ev_signal_start (EV_A_ &childev);
		905	ev_unref (EV_A); /* child watcher should not keep loop alive */
		906	#endif
469	}	907	}
		908	else
		909	default_loop = 0;
470	}	910	}
471		911
472	return ev_method;	912	return default_loop;
		913	}
		914
		915	void
		916	ev_default_destroy (void)
		917	{
		918	#if EV_MULTIPLICITY
		919	struct ev_loop *loop = default_loop;
		920	#endif
		921
		922	#ifndef WIN32
		923	ev_ref (EV_A); /* child watcher */
		924	ev_signal_stop (EV_A_ &childev);
		925	#endif
		926
		927	ev_ref (EV_A); /* signal watcher */
		928	ev_io_stop (EV_A_ &sigev);
		929
		930	close (sigpipe [0]); sigpipe [0] = 0;
		931	close (sigpipe [1]); sigpipe [1] = 0;
		932
		933	loop_destroy (EV_A);
		934	}
		935
		936	void
		937	ev_default_fork (void)
		938	{
		939	#if EV_MULTIPLICITY
		940	struct ev_loop *loop = default_loop;
		941	#endif
		942
		943	if (method)
		944	postfork = 1;
473	}	945	}
474		946
475	/*****************************************************************************/	947	/*****************************************************************************/
476		948
477	void
478	ev_prefork (void)
479	{
480	/* nop */
481	}
482
483	void
484	ev_postfork_parent (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_child (void)
491	{
492	#if HAVE_EPOLL
493	if (ev_method == EVMETHOD_EPOLL)
494	epoll_postfork_child ();
495	#endif
496
497	ev_io_stop (&sigev);
498	close (sigpipe [0]);
499	close (sigpipe [1]);
500	pipe (sigpipe);
501	siginit ();
502	}
503
504	/*****************************************************************************/
505
506	static void	949	static int
		950	any_pending (EV_P)
		951	{
		952	int pri;
		953
		954	for (pri = NUMPRI; pri--; )
		955	if (pendingcnt [pri])
		956	return 1;
		957
		958	return 0;
		959	}
		960
		961	static void
507	call_pending (void)	962	call_pending (EV_P)
508	{	963	{
		964	int pri;
		965
		966	for (pri = NUMPRI; pri--; )
509	while (pendingcnt)	967	while (pendingcnt [pri])
510	{	968	{
511	ANPENDING *p = pendings + --pendingcnt;	969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
512		970
513	if (p->w)	971	if (p->w)
514	{	972	{
515	p->w->pending = 0;	973	p->w->pending = 0;
516	p->w->cb (p->w, p->events);	974	EV_CB_INVOKE (p->w, p->events);
517	}	975	}
518	}	976	}
519	}	977	}
520		978
521	static void	979	static void
522	timers_reify (void)	980	timers_reify (EV_P)
523	{	981	{
524	while (timercnt && timers [0]->at <= now)	982	while (timercnt && ((WT)timers [0])->at <= mn_now)
525	{	983	{
526	struct ev_timer *w = timers [0];	984	struct ev_timer *w = timers [0];
527		985
528	event ((W)w, EV_TIMEOUT);	986	assert (("inactive timer on timer heap detected", ev_is_active (w)));
529		987
530	/* first reschedule or stop timer */	988	/* first reschedule or stop timer */
531	if (w->repeat)	989	if (w->repeat)
532	{	990	{
		991	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		992
533	w->at = now + w->repeat;	993	((WT)w)->at += w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));	994	if (((WT)w)->at < mn_now)
		995	((WT)w)->at = mn_now;
		996
535	downheap ((WT *)timers, timercnt, 0);	997	downheap ((WT *)timers, timercnt, 0);
536	}	998	}
537	else	999	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	1000	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539	}
540	}
541		1001
		1002	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1003	}
		1004	}
		1005
542	static void	1006	static void
543	periodics_reify (void)	1007	periodics_reify (EV_P)
544	{	1008	{
545	while (periodiccnt && periodics [0]->at <= ev_now)	1009	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
546	{	1010	{
547	struct ev_periodic *w = periodics [0];	1011	struct ev_periodic *w = periodics [0];
548		1012
		1013	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1014
549	/* first reschedule or stop timer */	1015	/* first reschedule or stop timer */
550	if (w->interval)	1016	if (w->reschedule_cb)
551	{	1017	{
		1018	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1019
		1020	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1021	downheap ((WT *)periodics, periodiccnt, 0);
		1022	}
		1023	else if (w->interval)
		1024	{
552	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1025	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
553	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1026	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
554	downheap ((WT *)periodics, periodiccnt, 0);	1027	downheap ((WT *)periodics, periodiccnt, 0);
555	}	1028	}
556	else	1029	else
557	ev_periodic_stop (w); /* nonrepeating: stop timer */	1030	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
558		1031
559	event ((W)w, EV_TIMEOUT);	1032	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
560	}	1033	}
561	}	1034	}
562		1035
563	static void	1036	static void
564	periodics_reschedule (ev_tstamp diff)	1037	periodics_reschedule (EV_P)
565	{	1038	{
566	int i;	1039	int i;
567		1040
568	/* adjust periodics after time jump */	1041	/* adjust periodics after time jump */
569	for (i = 0; i < periodiccnt; ++i)	1042	for (i = 0; i < periodiccnt; ++i)
570	{	1043	{
571	struct ev_periodic *w = periodics [i];	1044	struct ev_periodic *w = periodics [i];
572		1045
		1046	if (w->reschedule_cb)
		1047	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
573	if (w->interval)	1048	else if (w->interval)
		1049	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1050	}
		1051
		1052	/* now rebuild the heap */
		1053	for (i = periodiccnt >> 1; i--; )
		1054	downheap ((WT *)periodics, periodiccnt, i);
		1055	}
		1056
		1057	inline int
		1058	time_update_monotonic (EV_P)
		1059	{
		1060	mn_now = get_clock ();
		1061
		1062	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1063	{
		1064	ev_rt_now = rtmn_diff + mn_now;
		1065	return 0;
		1066	}
		1067	else
		1068	{
		1069	now_floor = mn_now;
		1070	ev_rt_now = ev_time ();
		1071	return 1;
		1072	}
		1073	}
		1074
		1075	static void
		1076	time_update (EV_P)
		1077	{
		1078	int i;
		1079
		1080	#if EV_USE_MONOTONIC
		1081	if (expect_true (have_monotonic))
		1082	{
		1083	if (time_update_monotonic (EV_A))
574	{	1084	{
575	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1085	ev_tstamp odiff = rtmn_diff;
576		1086
577	if (fabs (diff) >= 1e-4)	1087	for (i = 4; --i; ) /* loop a few times, before making important decisions */
578	{	1088	{
579	ev_periodic_stop (w);	1089	rtmn_diff = ev_rt_now - mn_now;
580	ev_periodic_start (w);
581		1090
582	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1091	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1092	return; /* all is well */
		1093
		1094	ev_rt_now = ev_time ();
		1095	mn_now = get_clock ();
		1096	now_floor = mn_now;
583	}	1097	}
		1098
		1099	periodics_reschedule (EV_A);
		1100	/* no timer adjustment, as the monotonic clock doesn't jump */
		1101	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
584	}	1102	}
585	}	1103	}
586	}	1104	else
587		1105	#endif
588	static void	1106	{
589	time_update (void)
590	{
591	int i;
592
593	ev_now = ev_time ();	1107	ev_rt_now = ev_time ();
594		1108
595	if (have_monotonic)	1109	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
596	{
597	ev_tstamp odiff = diff;
598
599	for (i = 4; --i; ) /* loop a few times, before making important decisions */
600	{	1110	{
601	now = get_clock ();
602	diff = ev_now - now;
603
604	if (fabs (odiff - diff) < MIN_TIMEJUMP)
605	return; /* all is well */
606
607	ev_now = ev_time ();
608	}
609
610	periodics_reschedule (diff - odiff);
611	/* no timer adjustment, as the monotonic clock doesn't jump */
612	}
613	else
614	{
615	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
616	{
617	periodics_reschedule (ev_now - now);	1111	periodics_reschedule (EV_A);
618		1112
619	/* adjust timers. this is easy, as the offset is the same for all */	1113	/* adjust timers. this is easy, as the offset is the same for all */
620	for (i = 0; i < timercnt; ++i)	1114	for (i = 0; i < timercnt; ++i)
621	timers [i]->at += diff;	1115	((WT)timers [i])->at += ev_rt_now - mn_now;
622	}	1116	}
623		1117
624	now = ev_now;	1118	mn_now = ev_rt_now;
625	}	1119	}
626	}	1120	}
627		1121
628	int ev_loop_done;	1122	void
		1123	ev_ref (EV_P)
		1124	{
		1125	++activecnt;
		1126	}
629		1127
		1128	void
		1129	ev_unref (EV_P)
		1130	{
		1131	--activecnt;
		1132	}
		1133
		1134	static int loop_done;
		1135
		1136	void
630	void ev_loop (int flags)	1137	ev_loop (EV_P_ int flags)
631	{	1138	{
632	double block;	1139	double block;
633	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1140	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
634		1141
635	do	1142	do
636	{	1143	{
637	/* queue check watchers (and execute them) */	1144	/* queue check watchers (and execute them) */
638	if (preparecnt)	1145	if (expect_false (preparecnt))
639	{	1146	{
640	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1147	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
641	call_pending ();	1148	call_pending (EV_A);
642	}	1149	}
643		1150
		1151	/* we might have forked, so reify kernel state if necessary */
		1152	if (expect_false (postfork))
		1153	loop_fork (EV_A);
		1154
644	/* update fd-related kernel structures */	1155	/* update fd-related kernel structures */
645	fd_reify ();	1156	fd_reify (EV_A);
646		1157
647	/* calculate blocking time */	1158	/* calculate blocking time */
648		1159
649	/* we only need this for !monotonic clockor timers, but as we basically	1160	/* we only need this for !monotonic clock or timers, but as we basically
650	always have timers, we just calculate it always */	1161	always have timers, we just calculate it always */
		1162	#if EV_USE_MONOTONIC
		1163	if (expect_true (have_monotonic))
		1164	time_update_monotonic (EV_A);
		1165	else
		1166	#endif
		1167	{
651	ev_now = ev_time ();	1168	ev_rt_now = ev_time ();
		1169	mn_now = ev_rt_now;
		1170	}
652		1171
653	if (flags & EVLOOP_NONBLOCK || idlecnt)	1172	if (flags & EVLOOP_NONBLOCK || idlecnt)
654	block = 0.;	1173	block = 0.;
655	else	1174	else
656	{	1175	{
657	block = MAX_BLOCKTIME;	1176	block = MAX_BLOCKTIME;
658		1177
659	if (timercnt)	1178	if (timercnt)
660	{	1179	{
661	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1180	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
662	if (block > to) block = to;	1181	if (block > to) block = to;
663	}	1182	}
664		1183
665	if (periodiccnt)	1184	if (periodiccnt)
666	{	1185	{
667	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1186	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
668	if (block > to) block = to;	1187	if (block > to) block = to;
669	}	1188	}
670		1189
671	if (block < 0.) block = 0.;	1190	if (block < 0.) block = 0.;
672	}	1191	}
673		1192
674	method_poll (block);	1193	method_poll (EV_A_ block);
675		1194
676	/* update ev_now, do magic */	1195	/* update ev_rt_now, do magic */
677	time_update ();	1196	time_update (EV_A);
678		1197
679	/* queue pending timers and reschedule them */	1198	/* queue pending timers and reschedule them */
680	timers_reify (); /* relative timers called last */	1199	timers_reify (EV_A); /* relative timers called last */
681	periodics_reify (); /* absolute timers called first */	1200	periodics_reify (EV_A); /* absolute timers called first */
682		1201
683	/* queue idle watchers unless io or timers are pending */	1202	/* queue idle watchers unless io or timers are pending */
684	if (!pendingcnt)	1203	if (idlecnt && !any_pending (EV_A))
685	queue_events ((W *)idles, idlecnt, EV_IDLE);	1204	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
686		1205
687	/* queue check watchers, to be executed first */	1206	/* queue check watchers, to be executed first */
688	if (checkcnt)	1207	if (checkcnt)
689	queue_events ((W *)checks, checkcnt, EV_CHECK);	1208	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
690		1209
691	call_pending ();	1210	call_pending (EV_A);
692	}	1211	}
693	while (!ev_loop_done);	1212	while (activecnt && !loop_done);
694		1213
695	if (ev_loop_done != 2)	1214	if (loop_done != 2)
696	ev_loop_done = 0;	1215	loop_done = 0;
		1216	}
		1217
		1218	void
		1219	ev_unloop (EV_P_ int how)
		1220	{
		1221	loop_done = how;
697	}	1222	}
698		1223
699	/*****************************************************************************/	1224	/*****************************************************************************/
700		1225
701	static void	1226	inline void
702	wlist_add (WL *head, WL elem)	1227	wlist_add (WL *head, WL elem)
703	{	1228	{
704	elem->next = *head;	1229	elem->next = *head;
705	*head = elem;	1230	*head = elem;
706	}	1231	}
707		1232
708	static void	1233	inline void
709	wlist_del (WL *head, WL elem)	1234	wlist_del (WL *head, WL elem)
710	{	1235	{
711	while (*head)	1236	while (*head)
712	{	1237	{
713	if (*head == elem)	1238	if (*head == elem)
…		…
718		1243
719	head = &(*head)->next;	1244	head = &(*head)->next;
720	}	1245	}
721	}	1246	}
722		1247
723	static void	1248	inline void
724	ev_clear (W w)	1249	ev_clear_pending (EV_P_ W w)
725	{	1250	{
726	if (w->pending)	1251	if (w->pending)
727	{	1252	{
728	pendings [w->pending - 1].w = 0;	1253	pendings [ABSPRI (w)][w->pending - 1].w = 0;
729	w->pending = 0;	1254	w->pending = 0;
730	}	1255	}
731	}	1256	}
732		1257
733	static void	1258	inline void
734	ev_start (W w, int active)	1259	ev_start (EV_P_ W w, int active)
735	{	1260	{
		1261	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1262	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1263
736	w->active = active;	1264	w->active = active;
		1265	ev_ref (EV_A);
737	}	1266	}
738		1267
739	static void	1268	inline void
740	ev_stop (W w)	1269	ev_stop (EV_P_ W w)
741	{	1270	{
		1271	ev_unref (EV_A);
742	w->active = 0;	1272	w->active = 0;
743	}	1273	}
744		1274
745	/*****************************************************************************/	1275	/*****************************************************************************/
746		1276
747	void	1277	void
748	ev_io_start (struct ev_io *w)	1278	ev_io_start (EV_P_ struct ev_io *w)
749	{	1279	{
		1280	int fd = w->fd;
		1281
750	if (ev_is_active (w))	1282	if (ev_is_active (w))
751	return;	1283	return;
752		1284
753	int fd = w->fd;	1285	assert (("ev_io_start called with negative fd", fd >= 0));
754		1286
755	ev_start ((W)w, 1);	1287	ev_start (EV_A_ (W)w, 1);
756	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1288	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
757	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1289	wlist_add ((WL *)&anfds[fd].head, (WL)w);
758		1290
759	fd_change (fd);	1291	fd_change (EV_A_ fd);
760	}	1292	}
761		1293
762	void	1294	void
763	ev_io_stop (struct ev_io *w)	1295	ev_io_stop (EV_P_ struct ev_io *w)
764	{	1296	{
765	ev_clear ((W)w);	1297	ev_clear_pending (EV_A_ (W)w);
766	if (!ev_is_active (w))	1298	if (!ev_is_active (w))
767	return;	1299	return;
768		1300
		1301	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1302
769	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1303	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
770	ev_stop ((W)w);	1304	ev_stop (EV_A_ (W)w);
771		1305
772	fd_change (w->fd);	1306	fd_change (EV_A_ w->fd);
773	}	1307	}
774		1308
775	void	1309	void
776	ev_timer_start (struct ev_timer *w)	1310	ev_timer_start (EV_P_ struct ev_timer *w)
777	{	1311	{
778	if (ev_is_active (w))	1312	if (ev_is_active (w))
779	return;	1313	return;
780		1314
781	w->at += now;	1315	((WT)w)->at += mn_now;
782		1316
783	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1317	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
784		1318
785	ev_start ((W)w, ++timercnt);	1319	ev_start (EV_A_ (W)w, ++timercnt);
786	array_needsize (timers, timermax, timercnt, );	1320	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
787	timers [timercnt - 1] = w;	1321	timers [timercnt - 1] = w;
788	upheap ((WT *)timers, timercnt - 1);	1322	upheap ((WT *)timers, timercnt - 1);
789	}
790		1323
		1324	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1325	}
		1326
791	void	1327	void
792	ev_timer_stop (struct ev_timer *w)	1328	ev_timer_stop (EV_P_ struct ev_timer *w)
793	{	1329	{
794	ev_clear ((W)w);	1330	ev_clear_pending (EV_A_ (W)w);
795	if (!ev_is_active (w))	1331	if (!ev_is_active (w))
796	return;	1332	return;
797		1333
		1334	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1335
798	if (w->active < timercnt--)	1336	if (((W)w)->active < timercnt--)
799	{	1337	{
800	timers [w->active - 1] = timers [timercnt];	1338	timers [((W)w)->active - 1] = timers [timercnt];
801	downheap ((WT *)timers, timercnt, w->active - 1);	1339	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
802	}	1340	}
803		1341
804	w->at = w->repeat;	1342	((WT)w)->at -= mn_now;
805		1343
806	ev_stop ((W)w);	1344	ev_stop (EV_A_ (W)w);
807	}	1345	}
808		1346
809	void	1347	void
810	ev_timer_again (struct ev_timer *w)	1348	ev_timer_again (EV_P_ struct ev_timer *w)
811	{	1349	{
812	if (ev_is_active (w))	1350	if (ev_is_active (w))
813	{	1351	{
814	if (w->repeat)	1352	if (w->repeat)
815	{
816	w->at = now + w->repeat;
817	downheap ((WT *)timers, timercnt, w->active - 1);	1353	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
818	}
819	else	1354	else
820	ev_timer_stop (w);	1355	ev_timer_stop (EV_A_ w);
821	}	1356	}
822	else if (w->repeat)	1357	else if (w->repeat)
823	ev_timer_start (w);	1358	ev_timer_start (EV_A_ w);
824	}	1359	}
825		1360
826	void	1361	void
827	ev_periodic_start (struct ev_periodic *w)	1362	ev_periodic_start (EV_P_ struct ev_periodic *w)
828	{	1363	{
829	if (ev_is_active (w))	1364	if (ev_is_active (w))
830	return;	1365	return;
831		1366
832	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1367	if (w->reschedule_cb)
833		1368	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1369	else if (w->interval)
		1370	{
		1371	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
834	/* this formula differs from the one in periodic_reify because we do not always round up */	1372	/* this formula differs from the one in periodic_reify because we do not always round up */
835	if (w->interval)
836	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1373	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1374	}
837		1375
838	ev_start ((W)w, ++periodiccnt);	1376	ev_start (EV_A_ (W)w, ++periodiccnt);
839	array_needsize (periodics, periodicmax, periodiccnt, );	1377	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
840	periodics [periodiccnt - 1] = w;	1378	periodics [periodiccnt - 1] = w;
841	upheap ((WT *)periodics, periodiccnt - 1);	1379	upheap ((WT *)periodics, periodiccnt - 1);
842	}
843		1380
		1381	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1382	}
		1383
844	void	1384	void
845	ev_periodic_stop (struct ev_periodic *w)	1385	ev_periodic_stop (EV_P_ struct ev_periodic *w)
846	{	1386	{
847	ev_clear ((W)w);	1387	ev_clear_pending (EV_A_ (W)w);
848	if (!ev_is_active (w))	1388	if (!ev_is_active (w))
849	return;	1389	return;
850		1390
		1391	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1392
851	if (w->active < periodiccnt--)	1393	if (((W)w)->active < periodiccnt--)
852	{	1394	{
853	periodics [w->active - 1] = periodics [periodiccnt];	1395	periodics [((W)w)->active - 1] = periodics [periodiccnt];
854	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1396	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
855	}	1397	}
856		1398
857	ev_stop ((W)w);	1399	ev_stop (EV_A_ (W)w);
858	}	1400	}
859		1401
860	void	1402	void
		1403	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1404	{
		1405	/* TODO: use adjustheap and recalculation */
		1406	ev_periodic_stop (EV_A_ w);
		1407	ev_periodic_start (EV_A_ w);
		1408	}
		1409
		1410	void
861	ev_signal_start (struct ev_signal *w)	1411	ev_idle_start (EV_P_ struct ev_idle *w)
862	{	1412	{
863	if (ev_is_active (w))	1413	if (ev_is_active (w))
864	return;	1414	return;
865		1415
		1416	ev_start (EV_A_ (W)w, ++idlecnt);
		1417	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1418	idles [idlecnt - 1] = w;
		1419	}
		1420
		1421	void
		1422	ev_idle_stop (EV_P_ struct ev_idle *w)
		1423	{
		1424	ev_clear_pending (EV_A_ (W)w);
		1425	if (ev_is_active (w))
		1426	return;
		1427
		1428	idles [((W)w)->active - 1] = idles [--idlecnt];
		1429	ev_stop (EV_A_ (W)w);
		1430	}
		1431
		1432	void
		1433	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1434	{
		1435	if (ev_is_active (w))
		1436	return;
		1437
		1438	ev_start (EV_A_ (W)w, ++preparecnt);
		1439	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1440	prepares [preparecnt - 1] = w;
		1441	}
		1442
		1443	void
		1444	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1445	{
		1446	ev_clear_pending (EV_A_ (W)w);
		1447	if (ev_is_active (w))
		1448	return;
		1449
		1450	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1451	ev_stop (EV_A_ (W)w);
		1452	}
		1453
		1454	void
		1455	ev_check_start (EV_P_ struct ev_check *w)
		1456	{
		1457	if (ev_is_active (w))
		1458	return;
		1459
		1460	ev_start (EV_A_ (W)w, ++checkcnt);
		1461	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1462	checks [checkcnt - 1] = w;
		1463	}
		1464
		1465	void
		1466	ev_check_stop (EV_P_ struct ev_check *w)
		1467	{
		1468	ev_clear_pending (EV_A_ (W)w);
		1469	if (ev_is_active (w))
		1470	return;
		1471
		1472	checks [((W)w)->active - 1] = checks [--checkcnt];
		1473	ev_stop (EV_A_ (W)w);
		1474	}
		1475
		1476	#ifndef SA_RESTART
		1477	# define SA_RESTART 0
		1478	#endif
		1479
		1480	void
		1481	ev_signal_start (EV_P_ struct ev_signal *w)
		1482	{
		1483	#if EV_MULTIPLICITY
		1484	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1485	#endif
		1486	if (ev_is_active (w))
		1487	return;
		1488
		1489	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1490
866	ev_start ((W)w, 1);	1491	ev_start (EV_A_ (W)w, 1);
867	array_needsize (signals, signalmax, w->signum, signals_init);	1492	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
868	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1493	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
869		1494
870	if (!w->next)	1495	if (!((WL)w)->next)
871	{	1496	{
		1497	#if WIN32
		1498	signal (w->signum, sighandler);
		1499	#else
872	struct sigaction sa;	1500	struct sigaction sa;
873	sa.sa_handler = sighandler;	1501	sa.sa_handler = sighandler;
874	sigfillset (&sa.sa_mask);	1502	sigfillset (&sa.sa_mask);
875	sa.sa_flags = 0;	1503	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
876	sigaction (w->signum, &sa, 0);	1504	sigaction (w->signum, &sa, 0);
		1505	#endif
877	}	1506	}
878	}	1507	}
879		1508
880	void	1509	void
881	ev_signal_stop (struct ev_signal *w)	1510	ev_signal_stop (EV_P_ struct ev_signal *w)
882	{	1511	{
883	ev_clear ((W)w);	1512	ev_clear_pending (EV_A_ (W)w);
884	if (!ev_is_active (w))	1513	if (!ev_is_active (w))
885	return;	1514	return;
886		1515
887	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1516	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
888	ev_stop ((W)w);	1517	ev_stop (EV_A_ (W)w);
889		1518
890	if (!signals [w->signum - 1].head)	1519	if (!signals [w->signum - 1].head)
891	signal (w->signum, SIG_DFL);	1520	signal (w->signum, SIG_DFL);
892	}	1521	}
893		1522
894	void	1523	void
895	ev_idle_start (struct ev_idle *w)	1524	ev_child_start (EV_P_ struct ev_child *w)
896	{	1525	{
		1526	#if EV_MULTIPLICITY
		1527	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1528	#endif
897	if (ev_is_active (w))	1529	if (ev_is_active (w))
898	return;	1530	return;
899		1531
900	ev_start ((W)w, ++idlecnt);	1532	ev_start (EV_A_ (W)w, 1);
901	array_needsize (idles, idlemax, idlecnt, );	1533	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
902	idles [idlecnt - 1] = w;
903	}	1534	}
904		1535
905	void	1536	void
906	ev_idle_stop (struct ev_idle *w)	1537	ev_child_stop (EV_P_ struct ev_child *w)
907	{	1538	{
908	ev_clear ((W)w);	1539	ev_clear_pending (EV_A_ (W)w);
909	if (ev_is_active (w))	1540	if (ev_is_active (w))
910	return;	1541	return;
911		1542
912	idles [w->active - 1] = idles [--idlecnt];
913	ev_stop ((W)w);
914	}
915
916	void
917	ev_prepare_start (struct ev_prepare *w)
918	{
919	if (ev_is_active (w))
920	return;
921
922	ev_start ((W)w, ++preparecnt);
923	array_needsize (prepares, preparemax, preparecnt, );
924	prepares [preparecnt - 1] = w;
925	}
926
927	void
928	ev_prepare_stop (struct ev_prepare *w)
929	{
930	ev_clear ((W)w);
931	if (ev_is_active (w))
932	return;
933
934	prepares [w->active - 1] = prepares [--preparecnt];
935	ev_stop ((W)w);
936	}
937
938	void
939	ev_check_start (struct ev_check *w)
940	{
941	if (ev_is_active (w))
942	return;
943
944	ev_start ((W)w, ++checkcnt);
945	array_needsize (checks, checkmax, checkcnt, );
946	checks [checkcnt - 1] = w;
947	}
948
949	void
950	ev_check_stop (struct ev_check *w)
951	{
952	ev_clear ((W)w);
953	if (ev_is_active (w))
954	return;
955
956	checks [w->active - 1] = checks [--checkcnt];
957	ev_stop ((W)w);
958	}
959
960	void
961	ev_child_start (struct ev_child *w)
962	{
963	if (ev_is_active (w))
964	return;
965
966	ev_start ((W)w, 1);
967	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
968	}
969
970	void
971	ev_child_stop (struct ev_child *w)
972	{
973	ev_clear ((W)w);
974	if (ev_is_active (w))
975	return;
976
977	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1543	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
978	ev_stop ((W)w);	1544	ev_stop (EV_A_ (W)w);
979	}	1545	}
980		1546
981	/*****************************************************************************/	1547	/*****************************************************************************/
982		1548
983	struct ev_once	1549	struct ev_once
…		…
987	void (*cb)(int revents, void *arg);	1553	void (*cb)(int revents, void *arg);
988	void *arg;	1554	void *arg;
989	};	1555	};
990		1556
991	static void	1557	static void
992	once_cb (struct ev_once *once, int revents)	1558	once_cb (EV_P_ struct ev_once *once, int revents)
993	{	1559	{
994	void (*cb)(int revents, void *arg) = once->cb;	1560	void (*cb)(int revents, void *arg) = once->cb;
995	void *arg = once->arg;	1561	void *arg = once->arg;
996		1562
997	ev_io_stop (&once->io);	1563	ev_io_stop (EV_A_ &once->io);
998	ev_timer_stop (&once->to);	1564	ev_timer_stop (EV_A_ &once->to);
999	free (once);	1565	ev_free (once);
1000		1566
1001	cb (revents, arg);	1567	cb (revents, arg);
1002	}	1568	}
1003		1569
1004	static void	1570	static void
1005	once_cb_io (struct ev_io *w, int revents)	1571	once_cb_io (EV_P_ struct ev_io *w, int revents)
1006	{	1572	{
1007	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1573	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1008	}	1574	}
1009		1575
1010	static void	1576	static void
1011	once_cb_to (struct ev_timer *w, int revents)	1577	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1012	{	1578	{
1013	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1579	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1014	}	1580	}
1015		1581
1016	void	1582	void
1017	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1583	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1018	{	1584	{
1019	struct ev_once *once = malloc (sizeof (struct ev_once));	1585	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1020		1586
1021	if (!once)	1587	if (!once)
1022	cb (EV_ERROR, arg);	1588	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1023	else	1589	else
1024	{	1590	{
1025	once->cb = cb;	1591	once->cb = cb;
1026	once->arg = arg;	1592	once->arg = arg;
1027		1593
1028	ev_watcher_init (&once->io, once_cb_io);	1594	ev_init (&once->io, once_cb_io);
1029
1030	if (fd >= 0)	1595	if (fd >= 0)
1031	{	1596	{
1032	ev_io_set (&once->io, fd, events);	1597	ev_io_set (&once->io, fd, events);
1033	ev_io_start (&once->io);	1598	ev_io_start (EV_A_ &once->io);
1034	}	1599	}
1035		1600
1036	ev_watcher_init (&once->to, once_cb_to);	1601	ev_init (&once->to, once_cb_to);
1037
1038	if (timeout >= 0.)	1602	if (timeout >= 0.)
1039	{	1603	{
1040	ev_timer_set (&once->to, timeout, 0.);	1604	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1605	ev_timer_start (EV_A_ &once->to);
1042	}	1606	}
1043	}	1607	}
1044	}	1608	}
1045		1609
1046	/*****************************************************************************/	1610	#ifdef __cplusplus
1047
1048	#if 0
1049
1050	struct ev_io wio;
1051
1052	static void
1053	sin_cb (struct ev_io *w, int revents)
1054	{
1055	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1056	}	1611	}
1057
1058	static void
1059	ocb (struct ev_timer *w, int revents)
1060	{
1061	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1062	ev_timer_stop (w);
1063	ev_timer_start (w);
1064	}
1065
1066	static void
1067	scb (struct ev_signal *w, int revents)
1068	{
1069	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1070	ev_io_stop (&wio);
1071	ev_io_start (&wio);
1072	}
1073
1074	static void
1075	gcb (struct ev_signal *w, int revents)
1076	{
1077	fprintf (stderr, "generic %x\n", revents);
1078
1079	}
1080
1081	int main (void)
1082	{
1083	ev_init (0);
1084
1085	ev_io_init (&wio, sin_cb, 0, EV_READ);
1086	ev_io_start (&wio);
1087
1088	struct ev_timer t[10000];
1089
1090	#if 0
1091	int i;
1092	for (i = 0; i < 10000; ++i)
1093	{
1094	struct ev_timer *w = t + i;
1095	ev_watcher_init (w, ocb, i);
1096	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1097	ev_timer_start (w);
1098	if (drand48 () < 0.5)
1099	ev_timer_stop (w);
1100	}
1101	#endif	1612	#endif
1102		1613
1103	struct ev_timer t1;
1104	ev_timer_init (&t1, ocb, 5, 10);
1105	ev_timer_start (&t1);
1106
1107	struct ev_signal sig;
1108	ev_signal_init (&sig, scb, SIGQUIT);
1109	ev_signal_start (&sig);
1110
1111	struct ev_check cw;
1112	ev_check_init (&cw, gcb);
1113	ev_check_start (&cw);
1114
1115	struct ev_idle iw;
1116	ev_idle_init (&iw, gcb);
1117	ev_idle_start (&iw);
1118
1119	ev_loop (0);
1120
1121	return 0;
1122	}
1123
1124	#endif
1125
1126
1127
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