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Comparing libev/ev.c (file contents):
Revision 1.30 by root, Thu Nov 1 08:28:33 2007 UTC vs.
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC

1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
…		…
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
30	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
31	#endif	55	#endif
32		56
33	#include <math.h>	57	#include <math.h>
34	#include <stdlib.h>	58	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	59	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	60	#include <stddef.h>
39		61
40	#include <stdio.h>	62	#include <stdio.h>
41		63
42	#include <assert.h>	64	#include <assert.h>
43	#include <errno.h>	65	#include <errno.h>
44	#include <sys/types.h>	66	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	67	#include <time.h>
48		68
		69	#include <signal.h>
		70
		71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
		74	# include <sys/wait.h>
		75	#endif
		76	/**/
		77
49	#ifndef EV_USE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	80	#endif
54		81
55	#ifndef EV_USE_SELECT	82	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	83	# define EV_USE_SELECT 1
57	#endif	84	#endif
58		85
		86	#ifndef EV_USE_POLL
		87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		88	#endif
		89
59	#ifndef EV_USE_EPOLL	90	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	91	# define EV_USE_EPOLL 0
61	#endif	92	#endif
62		93
		94	#ifndef EV_USE_KQUEUE
		95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
		105	# endif
		106	#endif
		107
63	#ifndef EV_USE_REALTIME	108	#ifndef EV_USE_REALTIME
64	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	109	# define EV_USE_REALTIME 1
65	#endif	110	#endif
		111
		112	/**/
		113
		114	#ifndef CLOCK_MONOTONIC
		115	# undef EV_USE_MONOTONIC
		116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef CLOCK_REALTIME
		120	# undef EV_USE_REALTIME
		121	# define EV_USE_REALTIME 0
		122	#endif
		123
		124	/**/
66		125
67	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
68	#define MAX_BLOCKTIME 59.731	127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
69	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
70		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
71	#include "ev.h"	134	# include "ev.h"
		135	#endif
		136
		137	#if __GNUC__ >= 3
		138	# define expect(expr,value) __builtin_expect ((expr),(value))
		139	# define inline inline
		140	#else
		141	# define expect(expr,value) (expr)
		142	# define inline static
		143	#endif
		144
		145	#define expect_false(expr) expect ((expr) != 0, 0)
		146	#define expect_true(expr) expect ((expr) != 0, 1)
		147
		148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
72		150
73	typedef struct ev_watcher *W;	151	typedef struct ev_watcher *W;
74	typedef struct ev_watcher_list *WL;	152	typedef struct ev_watcher_list *WL;
75	typedef struct ev_watcher_time *WT;	153	typedef struct ev_watcher_time *WT;
76		154
77	static ev_tstamp now, diff; /* monotonic clock */	155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
78	ev_tstamp ev_now;
79	int ev_method;
80		156
81	static int have_monotonic; /* runtime */	157	#include "ev_win32.c"
82
83	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
84	static void (*method_modify)(int fd, int oev, int nev);
85	static void (*method_poll)(ev_tstamp timeout);
86		158
87	/*****************************************************************************/	159	/*****************************************************************************/
88		160
89	ev_tstamp	161	static void (*syserr_cb)(const char *msg);
		162
		163	void ev_set_syserr_cb (void (*cb)(const char *msg))
		164	{
		165	syserr_cb = cb;
		166	}
		167
		168	static void
		169	syserr (const char *msg)
		170	{
		171	if (!msg)
		172	msg = "(libev) system error";
		173
		174	if (syserr_cb)
		175	syserr_cb (msg);
		176	else
		177	{
		178	perror (msg);
		179	abort ();
		180	}
		181	}
		182
		183	static void *(*alloc)(void *ptr, long size);
		184
		185	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		186	{
		187	alloc = cb;
		188	}
		189
		190	static void *
		191	ev_realloc (void *ptr, long size)
		192	{
		193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		194
		195	if (!ptr && size)
		196	{
		197	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		198	abort ();
		199	}
		200
		201	return ptr;
		202	}
		203
		204	#define ev_malloc(size) ev_realloc (0, (size))
		205	#define ev_free(ptr) ev_realloc ((ptr), 0)
		206
		207	/*****************************************************************************/
		208
		209	typedef struct
		210	{
		211	WL head;
		212	unsigned char events;
		213	unsigned char reify;
		214	} ANFD;
		215
		216	typedef struct
		217	{
		218	W w;
		219	int events;
		220	} ANPENDING;
		221
		222	#if EV_MULTIPLICITY
		223
		224	struct ev_loop
		225	{
		226	#define VAR(name,decl) decl;
		227	#include "ev_vars.h"
		228	#undef VAR
		229	};
		230	#include "ev_wrap.h"
		231
		232	struct ev_loop default_loop_struct;
		233	static struct ev_loop *default_loop;
		234
		235	#else
		236
		237	#define VAR(name,decl) static decl;
		238	#include "ev_vars.h"
		239	#undef VAR
		240
		241	static int default_loop;
		242
		243	#endif
		244
		245	/*****************************************************************************/
		246
		247	inline ev_tstamp
90	ev_time (void)	248	ev_time (void)
91	{	249	{
92	#if EV_USE_REALTIME	250	#if EV_USE_REALTIME
93	struct timespec ts;	251	struct timespec ts;
94	clock_gettime (CLOCK_REALTIME, &ts);	252	clock_gettime (CLOCK_REALTIME, &ts);
…		…
98	gettimeofday (&tv, 0);	256	gettimeofday (&tv, 0);
99	return tv.tv_sec + tv.tv_usec * 1e-6;	257	return tv.tv_sec + tv.tv_usec * 1e-6;
100	#endif	258	#endif
101	}	259	}
102		260
103	static ev_tstamp	261	inline ev_tstamp
104	get_clock (void)	262	get_clock (void)
105	{	263	{
106	#if EV_USE_MONOTONIC	264	#if EV_USE_MONOTONIC
107	if (have_monotonic)	265	if (expect_true (have_monotonic))
108	{	266	{
109	struct timespec ts;	267	struct timespec ts;
110	clock_gettime (CLOCK_MONOTONIC, &ts);	268	clock_gettime (CLOCK_MONOTONIC, &ts);
111	return ts.tv_sec + ts.tv_nsec * 1e-9;	269	return ts.tv_sec + ts.tv_nsec * 1e-9;
112	}	270	}
113	#endif	271	#endif
114		272
115	return ev_time ();	273	return ev_time ();
116	}	274	}
117		275
		276	ev_tstamp
		277	ev_now (EV_P)
		278	{
		279	return rt_now;
		280	}
		281
118	#define array_roundsize(base,n) ((n) | 4 & ~3)	282	#define array_roundsize(type,n) ((n) | 4 & ~3)
119		283
120	#define array_needsize(base,cur,cnt,init) \	284	#define array_needsize(type,base,cur,cnt,init) \
121	if ((cnt) > cur) \	285	if (expect_false ((cnt) > cur)) \
122	{ \	286	{ \
123	int newcnt = cur; \	287	int newcnt = cur; \
124	do \	288	do \
125	{ \	289	{ \
126	newcnt = array_roundsize (base, newcnt << 1); \	290	newcnt = array_roundsize (type, newcnt << 1); \
127	} \	291	} \
128	while ((cnt) > newcnt); \	292	while ((cnt) > newcnt); \
129	\	293	\
130	base = realloc (base, sizeof (*base) * (newcnt)); \	294	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
131	init (base + cur, newcnt - cur); \	295	init (base + cur, newcnt - cur); \
132	cur = newcnt; \	296	cur = newcnt; \
133	}	297	}
		298
		299	#define array_slim(type,stem) \
		300	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		301	{ \
		302	stem ## max = array_roundsize (stem ## cnt >> 1); \
		303	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		305	}
		306
		307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		309	#define array_free_microshit(stem) \
		310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		311
		312	#define array_free(stem, idx) \
		313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
134		314
135	/*****************************************************************************/	315	/*****************************************************************************/
136
137	typedef struct
138	{
139	struct ev_io *head;
140	int events;
141	} ANFD;
142
143	static ANFD *anfds;
144	static int anfdmax;
145		316
146	static void	317	static void
147	anfds_init (ANFD *base, int count)	318	anfds_init (ANFD *base, int count)
148	{	319	{
149	while (count--)	320	while (count--)
150	{	321	{
151	base->head = 0;	322	base->head = 0;
152	base->events = EV_NONE;	323	base->events = EV_NONE;
		324	base->reify = 0;
		325
153	++base;	326	++base;
154	}	327	}
155	}	328	}
156		329
157	typedef struct	330	void
		331	ev_feed_event (EV_P_ void *w, int revents)
158	{	332	{
159	W w;	333	W w_ = (W)w;
160	int events;
161	} ANPENDING;
162		334
163	static ANPENDING *pendings;	335	if (w_->pending)
164	static int pendingmax, pendingcnt;	336	{
		337	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		338	return;
		339	}
165		340
166	static void
167	event (W w, int events)
168	{
169	w->pending = ++pendingcnt;	341	w_->pending = ++pendingcnt [ABSPRI (w_)];
170	array_needsize (pendings, pendingmax, pendingcnt, );	342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
171	pendings [pendingcnt - 1].w = w;	343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
172	pendings [pendingcnt - 1].events = events;	344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
173	}	345	}
174		346
175	static void	347	static void
176	queue_events (W *events, int eventcnt, int type)	348	queue_events (EV_P_ W *events, int eventcnt, int type)
177	{	349	{
178	int i;	350	int i;
179		351
180	for (i = 0; i < eventcnt; ++i)	352	for (i = 0; i < eventcnt; ++i)
181	event (events [i], type);	353	ev_feed_event (EV_A_ events [i], type);
182	}	354	}
183		355
184	static void	356	inline void
185	fd_event (int fd, int events)	357	fd_event (EV_P_ int fd, int revents)
186	{	358	{
187	ANFD *anfd = anfds + fd;	359	ANFD *anfd = anfds + fd;
188	struct ev_io *w;	360	struct ev_io *w;
189		361
190	for (w = anfd->head; w; w = w->next)	362	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
191	{	363	{
192	int ev = w->events & events;	364	int ev = w->events & revents;
193		365
194	if (ev)	366	if (ev)
195	event ((W)w, ev);	367	ev_feed_event (EV_A_ (W)w, ev);
196	}	368	}
		369	}
		370
		371	void
		372	ev_feed_fd_event (EV_P_ int fd, int revents)
		373	{
		374	fd_event (EV_A_ fd, revents);
197	}	375	}
198		376
199	/*****************************************************************************/	377	/*****************************************************************************/
200		378
201	static int *fdchanges;
202	static int fdchangemax, fdchangecnt;
203
204	static void	379	static void
205	fd_reify (void)	380	fd_reify (EV_P)
206	{	381	{
207	int i;	382	int i;
208		383
209	for (i = 0; i < fdchangecnt; ++i)	384	for (i = 0; i < fdchangecnt; ++i)
210	{	385	{
…		…
212	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
213	struct ev_io *w;	388	struct ev_io *w;
214		389
215	int events = 0;	390	int events = 0;
216		391
217	for (w = anfd->head; w; w = w->next)	392	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
218	events |= w->events;	393	events |= w->events;
219		394
220	anfd->events &= ~EV_REIFY;	395	anfd->reify = 0;
221		396
222	if (anfd->events != events)
223	{
224	method_modify (fd, anfd->events, events);	397	method_modify (EV_A_ fd, anfd->events, events);
225	anfd->events = events;	398	anfd->events = events;
226	}
227	}	399	}
228		400
229	fdchangecnt = 0;	401	fdchangecnt = 0;
230	}	402	}
231		403
232	static void	404	static void
233	fd_change (int fd)	405	fd_change (EV_P_ int fd)
234	{	406	{
235	if (anfds [fd].events & EV_REIFY || fdchangecnt < 0)	407	if (anfds [fd].reify)
236	return;	408	return;
237		409
238	anfds [fd].events |= EV_REIFY;	410	anfds [fd].reify = 1;
239		411
240	++fdchangecnt;	412	++fdchangecnt;
241	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
242	fdchanges [fdchangecnt - 1] = fd;	414	fdchanges [fdchangecnt - 1] = fd;
243	}	415	}
244		416
		417	static void
		418	fd_kill (EV_P_ int fd)
		419	{
		420	struct ev_io *w;
		421
		422	while ((w = (struct ev_io *)anfds [fd].head))
		423	{
		424	ev_io_stop (EV_A_ w);
		425	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		426	}
		427	}
		428
		429	static int
		430	fd_valid (int fd)
		431	{
		432	#ifdef WIN32
		433	return !!win32_get_osfhandle (fd);
		434	#else
		435	return fcntl (fd, F_GETFD) != -1;
		436	#endif
		437	}
		438
245	/* called on EBADF to verify fds */	439	/* called on EBADF to verify fds */
246	static void	440	static void
247	fd_recheck (void)	441	fd_ebadf (EV_P)
248	{	442	{
249	int fd;	443	int fd;
250		444
251	for (fd = 0; fd < anfdmax; ++fd)	445	for (fd = 0; fd < anfdmax; ++fd)
252	if (anfds [fd].events)	446	if (anfds [fd].events)
253	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	447	if (!fd_valid (fd) == -1 && errno == EBADF)
254	while (anfds [fd].head)	448	fd_kill (EV_A_ fd);
		449	}
		450
		451	/* called on ENOMEM in select/poll to kill some fds and retry */
		452	static void
		453	fd_enomem (EV_P)
		454	{
		455	int fd;
		456
		457	for (fd = anfdmax; fd--; )
		458	if (anfds [fd].events)
255	{	459	{
256	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT);	460	fd_kill (EV_A_ fd);
257	ev_io_stop (anfds [fd].head);	461	return;
258	}	462	}
		463	}
		464
		465	/* usually called after fork if method needs to re-arm all fds from scratch */
		466	static void
		467	fd_rearm_all (EV_P)
		468	{
		469	int fd;
		470
		471	/* this should be highly optimised to not do anything but set a flag */
		472	for (fd = 0; fd < anfdmax; ++fd)
		473	if (anfds [fd].events)
		474	{
		475	anfds [fd].events = 0;
		476	fd_change (EV_A_ fd);
		477	}
259	}	478	}
260		479
261	/*****************************************************************************/	480	/*****************************************************************************/
262		481
263	static struct ev_timer **timers;
264	static int timermax, timercnt;
265
266	static struct ev_periodic **periodics;
267	static int periodicmax, periodiccnt;
268
269	static void	482	static void
270	upheap (WT *timers, int k)	483	upheap (WT *heap, int k)
271	{	484	{
272	WT w = timers [k];	485	WT w = heap [k];
273		486
274	while (k && timers [k >> 1]->at > w->at)	487	while (k && heap [k >> 1]->at > w->at)
275	{	488	{
276	timers [k] = timers [k >> 1];	489	heap [k] = heap [k >> 1];
277	timers [k]->active = k + 1;	490	((W)heap [k])->active = k + 1;
278	k >>= 1;	491	k >>= 1;
279	}	492	}
280		493
281	timers [k] = w;	494	heap [k] = w;
282	timers [k]->active = k + 1;	495	((W)heap [k])->active = k + 1;
283		496
284	}	497	}
285		498
286	static void	499	static void
287	downheap (WT *timers, int N, int k)	500	downheap (WT *heap, int N, int k)
288	{	501	{
289	WT w = timers [k];	502	WT w = heap [k];
290		503
291	while (k < (N >> 1))	504	while (k < (N >> 1))
292	{	505	{
293	int j = k << 1;	506	int j = k << 1;
294		507
295	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	508	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
296	++j;	509	++j;
297		510
298	if (w->at <= timers [j]->at)	511	if (w->at <= heap [j]->at)
299	break;	512	break;
300		513
301	timers [k] = timers [j];	514	heap [k] = heap [j];
302	timers [k]->active = k + 1;	515	((W)heap [k])->active = k + 1;
303	k = j;	516	k = j;
304	}	517	}
305		518
306	timers [k] = w;	519	heap [k] = w;
307	timers [k]->active = k + 1;	520	((W)heap [k])->active = k + 1;
		521	}
		522
		523	inline void
		524	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		525	{
		526	ev_tstamp old_at = heap [k]->at;
		527	heap [k]->at = at;
		528
		529	if (old_at < at)
		530	downheap (heap, N, k);
		531	else
		532	upheap (heap, k);
308	}	533	}
309		534
310	/*****************************************************************************/	535	/*****************************************************************************/
311		536
312	typedef struct	537	typedef struct
313	{	538	{
314	struct ev_signal *head;	539	WL head;
315	sig_atomic_t gotsig;	540	sig_atomic_t volatile gotsig;
316	} ANSIG;	541	} ANSIG;
317		542
318	static ANSIG *signals;	543	static ANSIG *signals;
319	static int signalmax;	544	static int signalmax;
320		545
321	static int sigpipe [2];	546	static int sigpipe [2];
322	static sig_atomic_t gotsig;	547	static sig_atomic_t volatile gotsig;
323	static struct ev_io sigev;	548	static struct ev_io sigev;
324		549
325	static void	550	static void
326	signals_init (ANSIG *base, int count)	551	signals_init (ANSIG *base, int count)
327	{	552	{
328	while (count--)	553	while (count--)
329	{	554	{
330	base->head = 0;	555	base->head = 0;
331	base->gotsig = 0;	556	base->gotsig = 0;
		557
332	++base;	558	++base;
333	}	559	}
334	}	560	}
335		561
336	static void	562	static void
337	sighandler (int signum)	563	sighandler (int signum)
338	{	564	{
		565	#if WIN32
		566	signal (signum, sighandler);
		567	#endif
		568
339	signals [signum - 1].gotsig = 1;	569	signals [signum - 1].gotsig = 1;
340		570
341	if (!gotsig)	571	if (!gotsig)
342	{	572	{
		573	int old_errno = errno;
343	gotsig = 1;	574	gotsig = 1;
		575	#ifdef WIN32
		576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		577	#else
344	write (sigpipe [1], &gotsig, 1);	578	write (sigpipe [1], &signum, 1);
		579	#endif
		580	errno = old_errno;
345	}	581	}
346	}	582	}
347		583
		584	void
		585	ev_feed_signal_event (EV_P_ int signum)
		586	{
		587	WL w;
		588
		589	#if EV_MULTIPLICITY
		590	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		591	#endif
		592
		593	--signum;
		594
		595	if (signum < 0 || signum >= signalmax)
		596	return;
		597
		598	signals [signum].gotsig = 0;
		599
		600	for (w = signals [signum].head; w; w = w->next)
		601	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		602	}
		603
348	static void	604	static void
349	sigcb (struct ev_io *iow, int revents)	605	sigcb (EV_P_ struct ev_io *iow, int revents)
350	{	606	{
351	struct ev_signal *w;
352	int sig;	607	int signum;
353		608
		609	#ifdef WIN32
		610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		611	#else
		612	read (sigpipe [0], &revents, 1);
		613	#endif
354	gotsig = 0;	614	gotsig = 0;
355	read (sigpipe [0], &revents, 1);
356		615
357	for (sig = signalmax; sig--; )	616	for (signum = signalmax; signum--; )
358	if (signals [sig].gotsig)	617	if (signals [signum].gotsig)
359	{	618	ev_feed_signal_event (EV_A_ signum + 1);
360	signals [sig].gotsig = 0;
361
362	for (w = signals [sig].head; w; w = w->next)
363	event ((W)w, EV_SIGNAL);
364	}
365	}	619	}
366		620
367	static void	621	static void
368	siginit (void)	622	siginit (EV_P)
369	{	623	{
		624	#ifndef WIN32
370	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	625	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
371	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	626	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
372		627
373	/* rather than sort out wether we really need nb, set it */	628	/* rather than sort out wether we really need nb, set it */
374	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	629	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
375	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	630	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		631	#endif
376		632
377	ev_io_set (&sigev, sigpipe [0], EV_READ);	633	ev_io_set (&sigev, sigpipe [0], EV_READ);
378	ev_io_start (&sigev);	634	ev_io_start (EV_A_ &sigev);
		635	ev_unref (EV_A); /* child watcher should not keep loop alive */
379	}	636	}
380		637
381	/*****************************************************************************/	638	/*****************************************************************************/
382		639
383	static struct ev_idle **idles;
384	static int idlemax, idlecnt;
385
386	static struct ev_prepare **prepares;
387	static int preparemax, preparecnt;
388
389	static struct ev_check **checks;
390	static int checkmax, checkcnt;
391
392	/*****************************************************************************/
393
394	static struct ev_child *childs [PID_HASHSIZE];	640	static struct ev_child *childs [PID_HASHSIZE];
		641
		642	#ifndef WIN32
		643
395	static struct ev_signal childev;	644	static struct ev_signal childev;
396		645
397	#ifndef WCONTINUED	646	#ifndef WCONTINUED
398	# define WCONTINUED 0	647	# define WCONTINUED 0
399	#endif	648	#endif
400		649
401	static void	650	static void
402	childcb (struct ev_signal *sw, int revents)	651	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
403	{	652	{
404	struct ev_child *w;	653	struct ev_child *w;
		654
		655	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		656	if (w->pid == pid || !w->pid)
		657	{
		658	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		659	w->rpid = pid;
		660	w->rstatus = status;
		661	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		662	}
		663	}
		664
		665	static void
		666	childcb (EV_P_ struct ev_signal *sw, int revents)
		667	{
405	int pid, status;	668	int pid, status;
406		669
407	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	670	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
408	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	671	{
409	if (w->pid == pid || w->pid == -1)	672	/* make sure we are called again until all childs have been reaped */
410	{	673	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
411	w->status = status;	674
412	event ((W)w, EV_CHILD);	675	child_reap (EV_A_ sw, pid, pid, status);
413	}	676	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		677	}
414	}	678	}
		679
		680	#endif
415		681
416	/*****************************************************************************/	682	/*****************************************************************************/
417		683
		684	#if EV_USE_KQUEUE
		685	# include "ev_kqueue.c"
		686	#endif
418	#if EV_USE_EPOLL	687	#if EV_USE_EPOLL
419	# include "ev_epoll.c"	688	# include "ev_epoll.c"
420	#endif	689	#endif
		690	#if EV_USE_POLL
		691	# include "ev_poll.c"
		692	#endif
421	#if EV_USE_SELECT	693	#if EV_USE_SELECT
422	# include "ev_select.c"	694	# include "ev_select.c"
423	#endif	695	#endif
424		696
425	int	697	int
…		…
432	ev_version_minor (void)	704	ev_version_minor (void)
433	{	705	{
434	return EV_VERSION_MINOR;	706	return EV_VERSION_MINOR;
435	}	707	}
436		708
437	int ev_init (int flags)	709	/* return true if we are running with elevated privileges and should ignore env variables */
		710	static int
		711	enable_secure (void)
438	{	712	{
		713	#ifdef WIN32
		714	return 0;
		715	#else
		716	return getuid () != geteuid ()
		717	|| getgid () != getegid ();
		718	#endif
		719	}
		720
		721	int
		722	ev_method (EV_P)
		723	{
		724	return method;
		725	}
		726
		727	static void
		728	loop_init (EV_P_ int methods)
		729	{
439	if (!ev_method)	730	if (!method)
440	{	731	{
441	#if EV_USE_MONOTONIC	732	#if EV_USE_MONOTONIC
442	{	733	{
443	struct timespec ts;	734	struct timespec ts;
444	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	735	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
445	have_monotonic = 1;	736	have_monotonic = 1;
446	}	737	}
447	#endif	738	#endif
448		739
449	ev_now = ev_time ();	740	rt_now = ev_time ();
450	now = get_clock ();	741	mn_now = get_clock ();
		742	now_floor = mn_now;
451	diff = ev_now - now;	743	rtmn_diff = rt_now - mn_now;
452		744
453	if (pipe (sigpipe))	745	if (methods == EVMETHOD_AUTO)
454	return 0;	746	if (!enable_secure () && getenv ("LIBEV_METHODS"))
455		747	methods = atoi (getenv ("LIBEV_METHODS"));
		748	else
456	ev_method = EVMETHOD_NONE;	749	methods = EVMETHOD_ANY;
		750
		751	method = 0;
		752	#if EV_USE_WIN32
		753	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		754	#endif
		755	#if EV_USE_KQUEUE
		756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		757	#endif
457	#if EV_USE_EPOLL	758	#if EV_USE_EPOLL
458	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		760	#endif
		761	#if EV_USE_POLL
		762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
459	#endif	763	#endif
460	#if EV_USE_SELECT	764	#if EV_USE_SELECT
461	if (ev_method == EVMETHOD_NONE) select_init (flags);	765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
462	#endif	766	#endif
463		767
		768	ev_init (&sigev, sigcb);
		769	ev_set_priority (&sigev, EV_MAXPRI);
		770	}
		771	}
		772
		773	void
		774	loop_destroy (EV_P)
		775	{
		776	int i;
		777
		778	#if EV_USE_WIN32
		779	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		780	#endif
		781	#if EV_USE_KQUEUE
		782	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		783	#endif
		784	#if EV_USE_EPOLL
		785	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		786	#endif
		787	#if EV_USE_POLL
		788	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		789	#endif
		790	#if EV_USE_SELECT
		791	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		792	#endif
		793
		794	for (i = NUMPRI; i--; )
		795	array_free (pending, [i]);
		796
		797	/* have to use the microsoft-never-gets-it-right macro */
		798	array_free_microshit (fdchange);
		799	array_free_microshit (timer);
		800	array_free_microshit (periodic);
		801	array_free_microshit (idle);
		802	array_free_microshit (prepare);
		803	array_free_microshit (check);
		804
		805	method = 0;
		806	}
		807
		808	static void
		809	loop_fork (EV_P)
		810	{
		811	#if EV_USE_EPOLL
		812	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		813	#endif
		814	#if EV_USE_KQUEUE
		815	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		816	#endif
		817
		818	if (ev_is_active (&sigev))
		819	{
		820	/* default loop */
		821
		822	ev_ref (EV_A);
		823	ev_io_stop (EV_A_ &sigev);
		824	close (sigpipe [0]);
		825	close (sigpipe [1]);
		826
		827	while (pipe (sigpipe))
		828	syserr ("(libev) error creating pipe");
		829
		830	siginit (EV_A);
		831	}
		832
		833	postfork = 0;
		834	}
		835
		836	#if EV_MULTIPLICITY
		837	struct ev_loop *
		838	ev_loop_new (int methods)
		839	{
		840	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		841
		842	memset (loop, 0, sizeof (struct ev_loop));
		843
		844	loop_init (EV_A_ methods);
		845
		846	if (ev_method (EV_A))
		847	return loop;
		848
		849	return 0;
		850	}
		851
		852	void
		853	ev_loop_destroy (EV_P)
		854	{
		855	loop_destroy (EV_A);
		856	ev_free (loop);
		857	}
		858
		859	void
		860	ev_loop_fork (EV_P)
		861	{
		862	postfork = 1;
		863	}
		864
		865	#endif
		866
		867	#if EV_MULTIPLICITY
		868	struct ev_loop *
		869	#else
		870	int
		871	#endif
		872	ev_default_loop (int methods)
		873	{
		874	if (sigpipe [0] == sigpipe [1])
		875	if (pipe (sigpipe))
		876	return 0;
		877
		878	if (!default_loop)
		879	{
		880	#if EV_MULTIPLICITY
		881	struct ev_loop *loop = default_loop = &default_loop_struct;
		882	#else
		883	default_loop = 1;
		884	#endif
		885
		886	loop_init (EV_A_ methods);
		887
464	if (ev_method)	888	if (ev_method (EV_A))
465	{	889	{
466	ev_watcher_init (&sigev, sigcb);
467	siginit ();	890	siginit (EV_A);
468		891
		892	#ifndef WIN32
469	ev_signal_init (&childev, childcb, SIGCHLD);	893	ev_signal_init (&childev, childcb, SIGCHLD);
		894	ev_set_priority (&childev, EV_MAXPRI);
470	ev_signal_start (&childev);	895	ev_signal_start (EV_A_ &childev);
		896	ev_unref (EV_A); /* child watcher should not keep loop alive */
		897	#endif
471	}	898	}
		899	else
		900	default_loop = 0;
472	}	901	}
473		902
474	return ev_method;	903	return default_loop;
		904	}
		905
		906	void
		907	ev_default_destroy (void)
		908	{
		909	#if EV_MULTIPLICITY
		910	struct ev_loop *loop = default_loop;
		911	#endif
		912
		913	#ifndef WIN32
		914	ev_ref (EV_A); /* child watcher */
		915	ev_signal_stop (EV_A_ &childev);
		916	#endif
		917
		918	ev_ref (EV_A); /* signal watcher */
		919	ev_io_stop (EV_A_ &sigev);
		920
		921	close (sigpipe [0]); sigpipe [0] = 0;
		922	close (sigpipe [1]); sigpipe [1] = 0;
		923
		924	loop_destroy (EV_A);
		925	}
		926
		927	void
		928	ev_default_fork (void)
		929	{
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *loop = default_loop;
		932	#endif
		933
		934	if (method)
		935	postfork = 1;
475	}	936	}
476		937
477	/*****************************************************************************/	938	/*****************************************************************************/
478		939
479	void
480	ev_prefork (void)
481	{
482	/* nop */
483	}
484
485	void
486	ev_postfork_parent (void)
487	{
488	/* nop */
489	}
490
491	void
492	ev_postfork_child (void)
493	{
494	#if EV_USE_EPOLL
495	if (ev_method == EVMETHOD_EPOLL)
496	epoll_postfork_child ();
497	#endif
498
499	ev_io_stop (&sigev);
500	close (sigpipe [0]);
501	close (sigpipe [1]);
502	pipe (sigpipe);
503	siginit ();
504	}
505
506	/*****************************************************************************/
507
508	static void	940	static int
		941	any_pending (EV_P)
		942	{
		943	int pri;
		944
		945	for (pri = NUMPRI; pri--; )
		946	if (pendingcnt [pri])
		947	return 1;
		948
		949	return 0;
		950	}
		951
		952	static void
509	call_pending (void)	953	call_pending (EV_P)
510	{	954	{
		955	int pri;
		956
		957	for (pri = NUMPRI; pri--; )
511	while (pendingcnt)	958	while (pendingcnt [pri])
512	{	959	{
513	ANPENDING *p = pendings + --pendingcnt;	960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
514		961
515	if (p->w)	962	if (p->w)
516	{	963	{
517	p->w->pending = 0;	964	p->w->pending = 0;
518	p->w->cb (p->w, p->events);	965	EV_CB_INVOKE (p->w, p->events);
519	}	966	}
520	}	967	}
521	}	968	}
522		969
523	static void	970	static void
524	timers_reify (void)	971	timers_reify (EV_P)
525	{	972	{
526	while (timercnt && timers [0]->at <= now)	973	while (timercnt && ((WT)timers [0])->at <= mn_now)
527	{	974	{
528	struct ev_timer *w = timers [0];	975	struct ev_timer *w = timers [0];
		976
		977	assert (("inactive timer on timer heap detected", ev_is_active (w)));
529		978
530	/* first reschedule or stop timer */	979	/* first reschedule or stop timer */
531	if (w->repeat)	980	if (w->repeat)
532	{	981	{
		982	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
533	w->at = now + w->repeat;	983	((WT)w)->at = mn_now + w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));
535	downheap ((WT *)timers, timercnt, 0);	984	downheap ((WT *)timers, timercnt, 0);
536	}	985	}
537	else	986	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539		988
540	event ((W)w, EV_TIMEOUT);	989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
541	}	990	}
542	}	991	}
543		992
544	static void	993	static void
545	periodics_reify (void)	994	periodics_reify (EV_P)
546	{	995	{
547	while (periodiccnt && periodics [0]->at <= ev_now)	996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
548	{	997	{
549	struct ev_periodic *w = periodics [0];	998	struct ev_periodic *w = periodics [0];
550		999
		1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1001
551	/* first reschedule or stop timer */	1002	/* first reschedule or stop timer */
552	if (w->interval)	1003	if (w->reschedule_cb)
553	{	1004	{
		1005	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		1006
		1007	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		1008	downheap ((WT *)periodics, periodiccnt, 0);
		1009	}
		1010	else if (w->interval)
		1011	{
554	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1012	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
555	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1013	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
556	downheap ((WT *)periodics, periodiccnt, 0);	1014	downheap ((WT *)periodics, periodiccnt, 0);
557	}	1015	}
558	else	1016	else
559	ev_periodic_stop (w); /* nonrepeating: stop timer */	1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
560		1018
561	event ((W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
562	}	1020	}
563	}	1021	}
564		1022
565	static void	1023	static void
566	periodics_reschedule (ev_tstamp diff)	1024	periodics_reschedule (EV_P)
567	{	1025	{
568	int i;	1026	int i;
569		1027
570	/* adjust periodics after time jump */	1028	/* adjust periodics after time jump */
571	for (i = 0; i < periodiccnt; ++i)	1029	for (i = 0; i < periodiccnt; ++i)
572	{	1030	{
573	struct ev_periodic *w = periodics [i];	1031	struct ev_periodic *w = periodics [i];
574		1032
		1033	if (w->reschedule_cb)
		1034	((WT)w)->at = w->reschedule_cb (w, rt_now);
575	if (w->interval)	1035	else if (w->interval)
		1036	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1037	}
		1038
		1039	/* now rebuild the heap */
		1040	for (i = periodiccnt >> 1; i--; )
		1041	downheap ((WT *)periodics, periodiccnt, i);
		1042	}
		1043
		1044	inline int
		1045	time_update_monotonic (EV_P)
		1046	{
		1047	mn_now = get_clock ();
		1048
		1049	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1050	{
		1051	rt_now = rtmn_diff + mn_now;
		1052	return 0;
		1053	}
		1054	else
		1055	{
		1056	now_floor = mn_now;
		1057	rt_now = ev_time ();
		1058	return 1;
		1059	}
		1060	}
		1061
		1062	static void
		1063	time_update (EV_P)
		1064	{
		1065	int i;
		1066
		1067	#if EV_USE_MONOTONIC
		1068	if (expect_true (have_monotonic))
		1069	{
		1070	if (time_update_monotonic (EV_A))
576	{	1071	{
577	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1072	ev_tstamp odiff = rtmn_diff;
578		1073
579	if (fabs (diff) >= 1e-4)	1074	for (i = 4; --i; ) /* loop a few times, before making important decisions */
580	{	1075	{
581	ev_periodic_stop (w);	1076	rtmn_diff = rt_now - mn_now;
582	ev_periodic_start (w);
583		1077
584	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1078	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1079	return; /* all is well */
		1080
		1081	rt_now = ev_time ();
		1082	mn_now = get_clock ();
		1083	now_floor = mn_now;
585	}	1084	}
		1085
		1086	periodics_reschedule (EV_A);
		1087	/* no timer adjustment, as the monotonic clock doesn't jump */
		1088	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
586	}	1089	}
587	}	1090	}
588	}	1091	else
589		1092	#endif
590	static void	1093	{
591	time_update (void)
592	{
593	int i;
594
595	ev_now = ev_time ();	1094	rt_now = ev_time ();
596		1095
597	if (have_monotonic)	1096	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
598	{
599	ev_tstamp odiff = diff;
600
601	for (i = 4; --i; ) /* loop a few times, before making important decisions */
602	{	1097	{
603	now = get_clock ();
604	diff = ev_now - now;
605
606	if (fabs (odiff - diff) < MIN_TIMEJUMP)
607	return; /* all is well */
608
609	ev_now = ev_time ();
610	}
611
612	periodics_reschedule (diff - odiff);
613	/* no timer adjustment, as the monotonic clock doesn't jump */
614	}
615	else
616	{
617	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
618	{
619	periodics_reschedule (ev_now - now);	1098	periodics_reschedule (EV_A);
620		1099
621	/* adjust timers. this is easy, as the offset is the same for all */	1100	/* adjust timers. this is easy, as the offset is the same for all */
622	for (i = 0; i < timercnt; ++i)	1101	for (i = 0; i < timercnt; ++i)
623	timers [i]->at += diff;	1102	((WT)timers [i])->at += rt_now - mn_now;
624	}	1103	}
625		1104
626	now = ev_now;	1105	mn_now = rt_now;
627	}	1106	}
628	}	1107	}
629		1108
630	int ev_loop_done;	1109	void
		1110	ev_ref (EV_P)
		1111	{
		1112	++activecnt;
		1113	}
631		1114
		1115	void
		1116	ev_unref (EV_P)
		1117	{
		1118	--activecnt;
		1119	}
		1120
		1121	static int loop_done;
		1122
		1123	void
632	void ev_loop (int flags)	1124	ev_loop (EV_P_ int flags)
633	{	1125	{
634	double block;	1126	double block;
635	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1127	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
636		1128
637	do	1129	do
638	{	1130	{
639	/* queue check watchers (and execute them) */	1131	/* queue check watchers (and execute them) */
640	if (preparecnt)	1132	if (expect_false (preparecnt))
641	{	1133	{
642	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
643	call_pending ();	1135	call_pending (EV_A);
644	}	1136	}
645		1137
		1138	/* we might have forked, so reify kernel state if necessary */
		1139	if (expect_false (postfork))
		1140	loop_fork (EV_A);
		1141
646	/* update fd-related kernel structures */	1142	/* update fd-related kernel structures */
647	fd_reify ();	1143	fd_reify (EV_A);
648		1144
649	/* calculate blocking time */	1145	/* calculate blocking time */
650		1146
651	/* we only need this for !monotonic clockor timers, but as we basically	1147	/* we only need this for !monotonic clock or timers, but as we basically
652	always have timers, we just calculate it always */	1148	always have timers, we just calculate it always */
		1149	#if EV_USE_MONOTONIC
		1150	if (expect_true (have_monotonic))
		1151	time_update_monotonic (EV_A);
		1152	else
		1153	#endif
		1154	{
653	ev_now = ev_time ();	1155	rt_now = ev_time ();
		1156	mn_now = rt_now;
		1157	}
654		1158
655	if (flags & EVLOOP_NONBLOCK || idlecnt)	1159	if (flags & EVLOOP_NONBLOCK || idlecnt)
656	block = 0.;	1160	block = 0.;
657	else	1161	else
658	{	1162	{
659	block = MAX_BLOCKTIME;	1163	block = MAX_BLOCKTIME;
660		1164
661	if (timercnt)	1165	if (timercnt)
662	{	1166	{
663	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
664	if (block > to) block = to;	1168	if (block > to) block = to;
665	}	1169	}
666		1170
667	if (periodiccnt)	1171	if (periodiccnt)
668	{	1172	{
669	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
670	if (block > to) block = to;	1174	if (block > to) block = to;
671	}	1175	}
672		1176
673	if (block < 0.) block = 0.;	1177	if (block < 0.) block = 0.;
674	}	1178	}
675		1179
676	method_poll (block);	1180	method_poll (EV_A_ block);
677		1181
678	/* update ev_now, do magic */	1182	/* update rt_now, do magic */
679	time_update ();	1183	time_update (EV_A);
680		1184
681	/* queue pending timers and reschedule them */	1185	/* queue pending timers and reschedule them */
682	timers_reify (); /* relative timers called last */	1186	timers_reify (EV_A); /* relative timers called last */
683	periodics_reify (); /* absolute timers called first */	1187	periodics_reify (EV_A); /* absolute timers called first */
684		1188
685	/* queue idle watchers unless io or timers are pending */	1189	/* queue idle watchers unless io or timers are pending */
686	if (!pendingcnt)	1190	if (idlecnt && !any_pending (EV_A))
687	queue_events ((W *)idles, idlecnt, EV_IDLE);	1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
688		1192
689	/* queue check watchers, to be executed first */	1193	/* queue check watchers, to be executed first */
690	if (checkcnt)	1194	if (checkcnt)
691	queue_events ((W *)checks, checkcnt, EV_CHECK);	1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
692		1196
693	call_pending ();	1197	call_pending (EV_A);
694	}	1198	}
695	while (!ev_loop_done);	1199	while (activecnt && !loop_done);
696		1200
697	if (ev_loop_done != 2)	1201	if (loop_done != 2)
698	ev_loop_done = 0;	1202	loop_done = 0;
		1203	}
		1204
		1205	void
		1206	ev_unloop (EV_P_ int how)
		1207	{
		1208	loop_done = how;
699	}	1209	}
700		1210
701	/*****************************************************************************/	1211	/*****************************************************************************/
702		1212
703	static void	1213	inline void
704	wlist_add (WL *head, WL elem)	1214	wlist_add (WL *head, WL elem)
705	{	1215	{
706	elem->next = *head;	1216	elem->next = *head;
707	*head = elem;	1217	*head = elem;
708	}	1218	}
709		1219
710	static void	1220	inline void
711	wlist_del (WL *head, WL elem)	1221	wlist_del (WL *head, WL elem)
712	{	1222	{
713	while (*head)	1223	while (*head)
714	{	1224	{
715	if (*head == elem)	1225	if (*head == elem)
…		…
720		1230
721	head = &(*head)->next;	1231	head = &(*head)->next;
722	}	1232	}
723	}	1233	}
724		1234
725	static void	1235	inline void
726	ev_clear (W w)	1236	ev_clear_pending (EV_P_ W w)
727	{	1237	{
728	if (w->pending)	1238	if (w->pending)
729	{	1239	{
730	pendings [w->pending - 1].w = 0;	1240	pendings [ABSPRI (w)][w->pending - 1].w = 0;
731	w->pending = 0;	1241	w->pending = 0;
732	}	1242	}
733	}	1243	}
734		1244
735	static void	1245	inline void
736	ev_start (W w, int active)	1246	ev_start (EV_P_ W w, int active)
737	{	1247	{
		1248	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1249	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1250
738	w->active = active;	1251	w->active = active;
		1252	ev_ref (EV_A);
739	}	1253	}
740		1254
741	static void	1255	inline void
742	ev_stop (W w)	1256	ev_stop (EV_P_ W w)
743	{	1257	{
		1258	ev_unref (EV_A);
744	w->active = 0;	1259	w->active = 0;
745	}	1260	}
746		1261
747	/*****************************************************************************/	1262	/*****************************************************************************/
748		1263
749	void	1264	void
750	ev_io_start (struct ev_io *w)	1265	ev_io_start (EV_P_ struct ev_io *w)
751	{	1266	{
		1267	int fd = w->fd;
		1268
752	if (ev_is_active (w))	1269	if (ev_is_active (w))
753	return;	1270	return;
754		1271
755	int fd = w->fd;	1272	assert (("ev_io_start called with negative fd", fd >= 0));
756		1273
757	ev_start ((W)w, 1);	1274	ev_start (EV_A_ (W)w, 1);
758	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1275	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
759	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1276	wlist_add ((WL *)&anfds[fd].head, (WL)w);
760		1277
761	fd_change (fd);	1278	fd_change (EV_A_ fd);
762	}	1279	}
763		1280
764	void	1281	void
765	ev_io_stop (struct ev_io *w)	1282	ev_io_stop (EV_P_ struct ev_io *w)
766	{	1283	{
767	ev_clear ((W)w);	1284	ev_clear_pending (EV_A_ (W)w);
768	if (!ev_is_active (w))	1285	if (!ev_is_active (w))
769	return;	1286	return;
770		1287
771	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1288	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
772	ev_stop ((W)w);	1289	ev_stop (EV_A_ (W)w);
773		1290
774	fd_change (w->fd);	1291	fd_change (EV_A_ w->fd);
775	}	1292	}
776		1293
777	void	1294	void
778	ev_timer_start (struct ev_timer *w)	1295	ev_timer_start (EV_P_ struct ev_timer *w)
779	{	1296	{
780	if (ev_is_active (w))	1297	if (ev_is_active (w))
781	return;	1298	return;
782		1299
783	w->at += now;	1300	((WT)w)->at += mn_now;
784		1301
785	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1302	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
786		1303
787	ev_start ((W)w, ++timercnt);	1304	ev_start (EV_A_ (W)w, ++timercnt);
788	array_needsize (timers, timermax, timercnt, );	1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
789	timers [timercnt - 1] = w;	1306	timers [timercnt - 1] = w;
790	upheap ((WT *)timers, timercnt - 1);	1307	upheap ((WT *)timers, timercnt - 1);
791	}
792		1308
		1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1310	}
		1311
793	void	1312	void
794	ev_timer_stop (struct ev_timer *w)	1313	ev_timer_stop (EV_P_ struct ev_timer *w)
795	{	1314	{
796	ev_clear ((W)w);	1315	ev_clear_pending (EV_A_ (W)w);
797	if (!ev_is_active (w))	1316	if (!ev_is_active (w))
798	return;	1317	return;
799		1318
		1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1320
800	if (w->active < timercnt--)	1321	if (((W)w)->active < timercnt--)
801	{	1322	{
802	timers [w->active - 1] = timers [timercnt];	1323	timers [((W)w)->active - 1] = timers [timercnt];
803	downheap ((WT *)timers, timercnt, w->active - 1);	1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
804	}	1325	}
805		1326
806	w->at = w->repeat;	1327	((WT)w)->at = w->repeat;
807		1328
808	ev_stop ((W)w);	1329	ev_stop (EV_A_ (W)w);
809	}	1330	}
810		1331
811	void	1332	void
812	ev_timer_again (struct ev_timer *w)	1333	ev_timer_again (EV_P_ struct ev_timer *w)
813	{	1334	{
814	if (ev_is_active (w))	1335	if (ev_is_active (w))
815	{	1336	{
816	if (w->repeat)	1337	if (w->repeat)
817	{
818	w->at = now + w->repeat;
819	downheap ((WT *)timers, timercnt, w->active - 1);	1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
820	}
821	else	1339	else
822	ev_timer_stop (w);	1340	ev_timer_stop (EV_A_ w);
823	}	1341	}
824	else if (w->repeat)	1342	else if (w->repeat)
825	ev_timer_start (w);	1343	ev_timer_start (EV_A_ w);
826	}	1344	}
827		1345
828	void	1346	void
829	ev_periodic_start (struct ev_periodic *w)	1347	ev_periodic_start (EV_P_ struct ev_periodic *w)
830	{	1348	{
831	if (ev_is_active (w))	1349	if (ev_is_active (w))
832	return;	1350	return;
833		1351
834	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1352	if (w->reschedule_cb)
835		1353	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1354	else if (w->interval)
		1355	{
		1356	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
836	/* this formula differs from the one in periodic_reify because we do not always round up */	1357	/* this formula differs from the one in periodic_reify because we do not always round up */
837	if (w->interval)
838	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1358	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1359	}
839		1360
840	ev_start ((W)w, ++periodiccnt);	1361	ev_start (EV_A_ (W)w, ++periodiccnt);
841	array_needsize (periodics, periodicmax, periodiccnt, );	1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
842	periodics [periodiccnt - 1] = w;	1363	periodics [periodiccnt - 1] = w;
843	upheap ((WT *)periodics, periodiccnt - 1);	1364	upheap ((WT *)periodics, periodiccnt - 1);
844	}
845		1365
		1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1367	}
		1368
846	void	1369	void
847	ev_periodic_stop (struct ev_periodic *w)	1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)
848	{	1371	{
849	ev_clear ((W)w);	1372	ev_clear_pending (EV_A_ (W)w);
850	if (!ev_is_active (w))	1373	if (!ev_is_active (w))
851	return;	1374	return;
852		1375
		1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1377
853	if (w->active < periodiccnt--)	1378	if (((W)w)->active < periodiccnt--)
854	{	1379	{
855	periodics [w->active - 1] = periodics [periodiccnt];	1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];
856	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
857	}	1382	}
858		1383
859	ev_stop ((W)w);	1384	ev_stop (EV_A_ (W)w);
860	}	1385	}
861		1386
862	void	1387	void
		1388	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1389	{
		1390	/* TODO: use adjustheap and recalculation */
		1391	ev_periodic_stop (EV_A_ w);
		1392	ev_periodic_start (EV_A_ w);
		1393	}
		1394
		1395	void
863	ev_signal_start (struct ev_signal *w)	1396	ev_idle_start (EV_P_ struct ev_idle *w)
864	{	1397	{
865	if (ev_is_active (w))	1398	if (ev_is_active (w))
866	return;	1399	return;
867		1400
		1401	ev_start (EV_A_ (W)w, ++idlecnt);
		1402	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1403	idles [idlecnt - 1] = w;
		1404	}
		1405
		1406	void
		1407	ev_idle_stop (EV_P_ struct ev_idle *w)
		1408	{
		1409	ev_clear_pending (EV_A_ (W)w);
		1410	if (ev_is_active (w))
		1411	return;
		1412
		1413	idles [((W)w)->active - 1] = idles [--idlecnt];
		1414	ev_stop (EV_A_ (W)w);
		1415	}
		1416
		1417	void
		1418	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1419	{
		1420	if (ev_is_active (w))
		1421	return;
		1422
		1423	ev_start (EV_A_ (W)w, ++preparecnt);
		1424	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1425	prepares [preparecnt - 1] = w;
		1426	}
		1427
		1428	void
		1429	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1430	{
		1431	ev_clear_pending (EV_A_ (W)w);
		1432	if (ev_is_active (w))
		1433	return;
		1434
		1435	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1436	ev_stop (EV_A_ (W)w);
		1437	}
		1438
		1439	void
		1440	ev_check_start (EV_P_ struct ev_check *w)
		1441	{
		1442	if (ev_is_active (w))
		1443	return;
		1444
		1445	ev_start (EV_A_ (W)w, ++checkcnt);
		1446	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1447	checks [checkcnt - 1] = w;
		1448	}
		1449
		1450	void
		1451	ev_check_stop (EV_P_ struct ev_check *w)
		1452	{
		1453	ev_clear_pending (EV_A_ (W)w);
		1454	if (ev_is_active (w))
		1455	return;
		1456
		1457	checks [((W)w)->active - 1] = checks [--checkcnt];
		1458	ev_stop (EV_A_ (W)w);
		1459	}
		1460
		1461	#ifndef SA_RESTART
		1462	# define SA_RESTART 0
		1463	#endif
		1464
		1465	void
		1466	ev_signal_start (EV_P_ struct ev_signal *w)
		1467	{
		1468	#if EV_MULTIPLICITY
		1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1470	#endif
		1471	if (ev_is_active (w))
		1472	return;
		1473
		1474	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1475
868	ev_start ((W)w, 1);	1476	ev_start (EV_A_ (W)w, 1);
869	array_needsize (signals, signalmax, w->signum, signals_init);	1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
870	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
871		1479
872	if (!w->next)	1480	if (!((WL)w)->next)
873	{	1481	{
		1482	#if WIN32
		1483	signal (w->signum, sighandler);
		1484	#else
874	struct sigaction sa;	1485	struct sigaction sa;
875	sa.sa_handler = sighandler;	1486	sa.sa_handler = sighandler;
876	sigfillset (&sa.sa_mask);	1487	sigfillset (&sa.sa_mask);
877	sa.sa_flags = 0;	1488	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
878	sigaction (w->signum, &sa, 0);	1489	sigaction (w->signum, &sa, 0);
		1490	#endif
879	}	1491	}
880	}	1492	}
881		1493
882	void	1494	void
883	ev_signal_stop (struct ev_signal *w)	1495	ev_signal_stop (EV_P_ struct ev_signal *w)
884	{	1496	{
885	ev_clear ((W)w);	1497	ev_clear_pending (EV_A_ (W)w);
886	if (!ev_is_active (w))	1498	if (!ev_is_active (w))
887	return;	1499	return;
888		1500
889	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1501	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
890	ev_stop ((W)w);	1502	ev_stop (EV_A_ (W)w);
891		1503
892	if (!signals [w->signum - 1].head)	1504	if (!signals [w->signum - 1].head)
893	signal (w->signum, SIG_DFL);	1505	signal (w->signum, SIG_DFL);
894	}	1506	}
895		1507
896	void	1508	void
897	ev_idle_start (struct ev_idle *w)	1509	ev_child_start (EV_P_ struct ev_child *w)
898	{	1510	{
		1511	#if EV_MULTIPLICITY
		1512	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1513	#endif
899	if (ev_is_active (w))	1514	if (ev_is_active (w))
900	return;	1515	return;
901		1516
902	ev_start ((W)w, ++idlecnt);	1517	ev_start (EV_A_ (W)w, 1);
903	array_needsize (idles, idlemax, idlecnt, );	1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
904	idles [idlecnt - 1] = w;
905	}	1519	}
906		1520
907	void	1521	void
908	ev_idle_stop (struct ev_idle *w)	1522	ev_child_stop (EV_P_ struct ev_child *w)
909	{	1523	{
910	ev_clear ((W)w);	1524	ev_clear_pending (EV_A_ (W)w);
911	if (ev_is_active (w))	1525	if (ev_is_active (w))
912	return;	1526	return;
913		1527
914	idles [w->active - 1] = idles [--idlecnt];
915	ev_stop ((W)w);
916	}
917
918	void
919	ev_prepare_start (struct ev_prepare *w)
920	{
921	if (ev_is_active (w))
922	return;
923
924	ev_start ((W)w, ++preparecnt);
925	array_needsize (prepares, preparemax, preparecnt, );
926	prepares [preparecnt - 1] = w;
927	}
928
929	void
930	ev_prepare_stop (struct ev_prepare *w)
931	{
932	ev_clear ((W)w);
933	if (ev_is_active (w))
934	return;
935
936	prepares [w->active - 1] = prepares [--preparecnt];
937	ev_stop ((W)w);
938	}
939
940	void
941	ev_check_start (struct ev_check *w)
942	{
943	if (ev_is_active (w))
944	return;
945
946	ev_start ((W)w, ++checkcnt);
947	array_needsize (checks, checkmax, checkcnt, );
948	checks [checkcnt - 1] = w;
949	}
950
951	void
952	ev_check_stop (struct ev_check *w)
953	{
954	ev_clear ((W)w);
955	if (ev_is_active (w))
956	return;
957
958	checks [w->active - 1] = checks [--checkcnt];
959	ev_stop ((W)w);
960	}
961
962	void
963	ev_child_start (struct ev_child *w)
964	{
965	if (ev_is_active (w))
966	return;
967
968	ev_start ((W)w, 1);
969	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
970	}
971
972	void
973	ev_child_stop (struct ev_child *w)
974	{
975	ev_clear ((W)w);
976	if (ev_is_active (w))
977	return;
978
979	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1528	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	ev_stop ((W)w);	1529	ev_stop (EV_A_ (W)w);
981	}	1530	}
982		1531
983	/*****************************************************************************/	1532	/*****************************************************************************/
984		1533
985	struct ev_once	1534	struct ev_once
…		…
989	void (*cb)(int revents, void *arg);	1538	void (*cb)(int revents, void *arg);
990	void *arg;	1539	void *arg;
991	};	1540	};
992		1541
993	static void	1542	static void
994	once_cb (struct ev_once *once, int revents)	1543	once_cb (EV_P_ struct ev_once *once, int revents)
995	{	1544	{
996	void (*cb)(int revents, void *arg) = once->cb;	1545	void (*cb)(int revents, void *arg) = once->cb;
997	void *arg = once->arg;	1546	void *arg = once->arg;
998		1547
999	ev_io_stop (&once->io);	1548	ev_io_stop (EV_A_ &once->io);
1000	ev_timer_stop (&once->to);	1549	ev_timer_stop (EV_A_ &once->to);
1001	free (once);	1550	ev_free (once);
1002		1551
1003	cb (revents, arg);	1552	cb (revents, arg);
1004	}	1553	}
1005		1554
1006	static void	1555	static void
1007	once_cb_io (struct ev_io *w, int revents)	1556	once_cb_io (EV_P_ struct ev_io *w, int revents)
1008	{	1557	{
1009	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1558	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1010	}	1559	}
1011		1560
1012	static void	1561	static void
1013	once_cb_to (struct ev_timer *w, int revents)	1562	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1014	{	1563	{
1015	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1564	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1016	}	1565	}
1017		1566
1018	void	1567	void
1019	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1568	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1020	{	1569	{
1021	struct ev_once *once = malloc (sizeof (struct ev_once));	1570	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1022		1571
1023	if (!once)	1572	if (!once)
1024	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1573	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1025	else	1574	else
1026	{	1575	{
1027	once->cb = cb;	1576	once->cb = cb;
1028	once->arg = arg;	1577	once->arg = arg;
1029		1578
1030	ev_watcher_init (&once->io, once_cb_io);	1579	ev_init (&once->io, once_cb_io);
1031	if (fd >= 0)	1580	if (fd >= 0)
1032	{	1581	{
1033	ev_io_set (&once->io, fd, events);	1582	ev_io_set (&once->io, fd, events);
1034	ev_io_start (&once->io);	1583	ev_io_start (EV_A_ &once->io);
1035	}	1584	}
1036		1585
1037	ev_watcher_init (&once->to, once_cb_to);	1586	ev_init (&once->to, once_cb_to);
1038	if (timeout >= 0.)	1587	if (timeout >= 0.)
1039	{	1588	{
1040	ev_timer_set (&once->to, timeout, 0.);	1589	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1590	ev_timer_start (EV_A_ &once->to);
1042	}	1591	}
1043	}	1592	}
1044	}	1593	}
1045		1594
1046	/*****************************************************************************/
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	}
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
1102
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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