[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.23 by root, Wed Oct 31 20:10:17 2007 UTC vs.
Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
		37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
		64	#endif
		65
30	#include <math.h>	66	#include <math.h>
31	#include <stdlib.h>	67	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	68	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	69	#include <stddef.h>
36		70
37	#include <stdio.h>	71	#include <stdio.h>
38		72
39	#include <assert.h>	73	#include <assert.h>
40	#include <errno.h>	74	#include <errno.h>
41	#include <sys/types.h>	75	#include <sys/types.h>
42	#include <sys/wait.h>
43	#include <sys/time.h>
44	#include <time.h>	76	#include <time.h>
45		77
		78	#include <signal.h>
		79
		80	#ifndef WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#endif
		85	/**/
		86
46	#ifndef HAVE_MONOTONIC	87	#ifndef EV_USE_MONOTONIC
47	# ifdef CLOCK_MONOTONIC
48	# define HAVE_MONOTONIC 1	88	# define EV_USE_MONOTONIC 1
		89	#endif
		90
		91	#ifndef EV_USE_SELECT
		92	# define EV_USE_SELECT 1
		93	#endif
		94
		95	#ifndef EV_USE_POLL
		96	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		97	#endif
		98
		99	#ifndef EV_USE_EPOLL
		100	# define EV_USE_EPOLL 0
		101	#endif
		102
		103	#ifndef EV_USE_KQUEUE
		104	# define EV_USE_KQUEUE 0
		105	#endif
		106
		107	#ifndef EV_USE_WIN32
		108	# ifdef WIN32
		109	# define EV_USE_WIN32 0 /* it does not exist, use select */
		110	# undef EV_USE_SELECT
		111	# define EV_USE_SELECT 1
		112	# else
		113	# define EV_USE_WIN32 0
49	# endif	114	# endif
50	#endif	115	#endif
51		116
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	117	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	118	# define EV_USE_REALTIME 1
62	#endif	119	#endif
		120
		121	/**/
		122
		123	#ifndef CLOCK_MONOTONIC
		124	# undef EV_USE_MONOTONIC
		125	# define EV_USE_MONOTONIC 0
		126	#endif
		127
		128	#ifndef CLOCK_REALTIME
		129	# undef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
		131	#endif
		132
		133	/**/
63		134
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	135	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	136	#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 */	137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		138	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
67		139
		140	#ifdef EV_H
		141	# include EV_H
		142	#else
68	#include "ev.h"	143	# include "ev.h"
		144	#endif
		145
		146	#if __GNUC__ >= 3
		147	# define expect(expr,value) __builtin_expect ((expr),(value))
		148	# define inline inline
		149	#else
		150	# define expect(expr,value) (expr)
		151	# define inline static
		152	#endif
		153
		154	#define expect_false(expr) expect ((expr) != 0, 0)
		155	#define expect_true(expr) expect ((expr) != 0, 1)
		156
		157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
69		159
70	typedef struct ev_watcher *W;	160	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	161	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	162	typedef struct ev_watcher_time *WT;
73		163
74	static ev_tstamp now, diff; /* monotonic clock */	164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		165
		166	#ifdef WIN32
		167	# include "ev_win32.c"
		168	#endif
		169
		170	/*****************************************************************************/
		171
		172	static void (syserr_cb)(const char msg);
		173
		174	void ev_set_syserr_cb (void (cb)(const char msg))
		175	{
		176	syserr_cb = cb;
		177	}
		178
		179	static void
		180	syserr (const char *msg)
		181	{
		182	if (!msg)
		183	msg = "(libev) system error";
		184
		185	if (syserr_cb)
		186	syserr_cb (msg);
		187	else
		188	{
		189	perror (msg);
		190	abort ();
		191	}
		192	}
		193
		194	static void (alloc)(void *ptr, long size);
		195
		196	void ev_set_allocator (void (cb)(void *ptr, long size))
		197	{
		198	alloc = cb;
		199	}
		200
		201	static void *
		202	ev_realloc (void *ptr, long size)
		203	{
		204	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		205
		206	if (!ptr && size)
		207	{
		208	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		209	abort ();
		210	}
		211
		212	return ptr;
		213	}
		214
		215	#define ev_malloc(size) ev_realloc (0, (size))
		216	#define ev_free(ptr) ev_realloc ((ptr), 0)
		217
		218	/*****************************************************************************/
		219
		220	typedef struct
		221	{
		222	WL head;
		223	unsigned char events;
		224	unsigned char reify;
		225	} ANFD;
		226
		227	typedef struct
		228	{
		229	W w;
		230	int events;
		231	} ANPENDING;
		232
		233	#if EV_MULTIPLICITY
		234
		235	struct ev_loop
		236	{
		237	ev_tstamp ev_rt_now;
		238	#define VAR(name,decl) decl;
		239	#include "ev_vars.h"
		240	#undef VAR
		241	};
		242	#include "ev_wrap.h"
		243
		244	struct ev_loop default_loop_struct;
		245	static struct ev_loop *default_loop;
		246
		247	#else
		248
75	ev_tstamp ev_now;	249	ev_tstamp ev_rt_now;
76	int ev_method;	250	#define VAR(name,decl) static decl;
		251	#include "ev_vars.h"
		252	#undef VAR
77		253
78	static int have_monotonic; /* runtime */	254	static int default_loop;
79		255
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	256	#endif
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		257
84	/*****************************************************************************/	258	/*****************************************************************************/
85		259
86	ev_tstamp	260	ev_tstamp
87	ev_time (void)	261	ev_time (void)
88	{	262	{
89	#if HAVE_REALTIME	263	#if EV_USE_REALTIME
90	struct timespec ts;	264	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	265	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	266	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	267	#else
94	struct timeval tv;	268	struct timeval tv;
95	gettimeofday (&tv, 0);	269	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	270	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	271	#endif
98	}	272	}
99		273
100	static ev_tstamp	274	inline ev_tstamp
101	get_clock (void)	275	get_clock (void)
102	{	276	{
103	#if HAVE_MONOTONIC	277	#if EV_USE_MONOTONIC
104	if (have_monotonic)	278	if (expect_true (have_monotonic))
105	{	279	{
106	struct timespec ts;	280	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	281	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	282	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	283	}
110	#endif	284	#endif
111		285
112	return ev_time ();	286	return ev_time ();
113	}	287	}
114		288
		289	#if EV_MULTIPLICITY
		290	ev_tstamp
		291	ev_now (EV_P)
		292	{
		293	return ev_rt_now;
		294	}
		295	#endif
		296
		297	#define array_roundsize(type,n) ((n) \| 4 & ~3)
		298
115	#define array_needsize(base,cur,cnt,init) \	299	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	300	if (expect_false ((cnt) > cur)) \
117	{ \	301	{ \
118	int newcnt = cur; \	302	int newcnt = cur; \
119	do \	303	do \
120	{ \	304	{ \
121	newcnt = (newcnt << 1) \| 4 & ~3; \	305	newcnt = array_roundsize (type, newcnt << 1); \
122	} \	306	} \
123	while ((cnt) > newcnt); \	307	while ((cnt) > newcnt); \
124	\	308	\
125	base = realloc (base, sizeof (base) (newcnt)); \	309	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
126	init (base + cur, newcnt - cur); \	310	init (base + cur, newcnt - cur); \
127	cur = newcnt; \	311	cur = newcnt; \
128	}	312	}
		313
		314	#define array_slim(type,stem) \
		315	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		316	{ \
		317	stem ## max = array_roundsize (stem ## cnt >> 1); \
		318	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		319	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		320	}
		321
		322	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		323	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		324	#define array_free_microshit(stem) \
		325	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		326
		327	#define array_free(stem, idx) \
		328	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		329
130	/*****************************************************************************/	330	/*****************************************************************************/
131		331
132	typedef struct
133	{
134	struct ev_io *head;
135	unsigned char wev, rev; /* want, received event set */
136	} ANFD;
137
138	static ANFD *anfds;
139	static int anfdmax;
140
141	static int *fdchanges;
142	static int fdchangemax, fdchangecnt;
143
144	static void	332	static void
145	anfds_init (ANFD *base, int count)	333	anfds_init (ANFD *base, int count)
146	{	334	{
147	while (count--)	335	while (count--)
148	{	336	{
149	base->head = 0;	337	base->head = 0;
150	base->wev = base->rev = EV_NONE;	338	base->events = EV_NONE;
		339	base->reify = 0;
		340
151	++base;	341	++base;
152	}	342	}
153	}	343	}
154		344
155	typedef struct	345	void
		346	ev_feed_event (EV_P_ void *w, int revents)
156	{	347	{
157	W w;	348	W w_ = (W)w;
158	int events;
159	} ANPENDING;
160		349
161	static ANPENDING *pendings;	350	if (w_->pending)
162	static int pendingmax, pendingcnt;
163
164	static void
165	event (W w, int events)
166	{
167	if (w->active)
168	{	351	{
169	w->pending = ++pendingcnt;
170	array_needsize (pendings, pendingmax, pendingcnt, );
171	pendings [pendingcnt - 1].w = w;
172	pendings [pendingcnt - 1].events = events;	352	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		353	return;
173	}	354	}
174	}
175		355
		356	w_->pending = ++pendingcnt [ABSPRI (w_)];
		357	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		358	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		359	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		360	}
		361
176	static void	362	static void
		363	queue_events (EV_P_ W *events, int eventcnt, int type)
		364	{
		365	int i;
		366
		367	for (i = 0; i < eventcnt; ++i)
		368	ev_feed_event (EV_A_ events [i], type);
		369	}
		370
		371	inline void
177	fd_event (int fd, int events)	372	fd_event (EV_P_ int fd, int revents)
178	{	373	{
179	ANFD *anfd = anfds + fd;	374	ANFD *anfd = anfds + fd;
180	struct ev_io *w;	375	struct ev_io *w;
181		376
182	for (w = anfd->head; w; w = w->next)	377	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
183	{	378	{
184	int ev = w->events & events;	379	int ev = w->events & revents;
185		380
186	if (ev)	381	if (ev)
187	event ((W)w, ev);	382	ev_feed_event (EV_A_ (W)w, ev);
188	}	383	}
189	}	384	}
190		385
		386	void
		387	ev_feed_fd_event (EV_P_ int fd, int revents)
		388	{
		389	fd_event (EV_A_ fd, revents);
		390	}
		391
		392	/*****************************************************************************/
		393
191	static void	394	static void
192	queue_events (W *events, int eventcnt, int type)	395	fd_reify (EV_P)
193	{	396	{
194	int i;	397	int i;
195		398
196	for (i = 0; i < eventcnt; ++i)	399	for (i = 0; i < fdchangecnt; ++i)
197	event (events [i], type);	400	{
		401	int fd = fdchanges [i];
		402	ANFD *anfd = anfds + fd;
		403	struct ev_io *w;
		404
		405	int events = 0;
		406
		407	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
		408	events \|= w->events;
		409
		410	anfd->reify = 0;
		411
		412	method_modify (EV_A_ fd, anfd->events, events);
		413	anfd->events = events;
		414	}
		415
		416	fdchangecnt = 0;
		417	}
		418
		419	static void
		420	fd_change (EV_P_ int fd)
		421	{
		422	if (anfds [fd].reify)
		423	return;
		424
		425	anfds [fd].reify = 1;
		426
		427	++fdchangecnt;
		428	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
		429	fdchanges [fdchangecnt - 1] = fd;
		430	}
		431
		432	static void
		433	fd_kill (EV_P_ int fd)
		434	{
		435	struct ev_io *w;
		436
		437	while ((w = (struct ev_io *)anfds [fd].head))
		438	{
		439	ev_io_stop (EV_A_ w);
		440	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		441	}
		442	}
		443
		444	static int
		445	fd_valid (int fd)
		446	{
		447	#ifdef WIN32
		448	return !!win32_get_osfhandle (fd);
		449	#else
		450	return fcntl (fd, F_GETFD) != -1;
		451	#endif
198	}	452	}
199		453
200	/* called on EBADF to verify fds */	454	/* called on EBADF to verify fds */
201	static void	455	static void
202	fd_recheck ()	456	fd_ebadf (EV_P)
203	{	457	{
204	int fd;	458	int fd;
205		459
206	for (fd = 0; fd < anfdmax; ++fd)	460	for (fd = 0; fd < anfdmax; ++fd)
207	if (anfds [fd].wev)	461	if (anfds [fd].events)
208	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	462	if (!fd_valid (fd) == -1 && errno == EBADF)
209	while (anfds [fd].head)	463	fd_kill (EV_A_ fd);
210	evio_stop (anfds [fd].head);	464	}
		465
		466	/* called on ENOMEM in select/poll to kill some fds and retry */
		467	static void
		468	fd_enomem (EV_P)
		469	{
		470	int fd;
		471
		472	for (fd = anfdmax; fd--; )
		473	if (anfds [fd].events)
		474	{
		475	fd_kill (EV_A_ fd);
		476	return;
		477	}
		478	}
		479
		480	/* usually called after fork if method needs to re-arm all fds from scratch */
		481	static void
		482	fd_rearm_all (EV_P)
		483	{
		484	int fd;
		485
		486	/* this should be highly optimised to not do anything but set a flag */
		487	for (fd = 0; fd < anfdmax; ++fd)
		488	if (anfds [fd].events)
		489	{
		490	anfds [fd].events = 0;
		491	fd_change (EV_A_ fd);
		492	}
211	}	493	}
212		494
213	/*****************************************************************************/	495	/*****************************************************************************/
214		496
215	static struct ev_timer **timers;
216	static int timermax, timercnt;
217
218	static struct ev_periodic **periodics;
219	static int periodicmax, periodiccnt;
220
221	static void	497	static void
222	upheap (WT *timers, int k)	498	upheap (WT *heap, int k)
223	{	499	{
224	WT w = timers [k];	500	WT w = heap [k];
225		501
226	while (k && timers [k >> 1]->at > w->at)	502	while (k && heap [k >> 1]->at > w->at)
227	{	503	{
228	timers [k] = timers [k >> 1];	504	heap [k] = heap [k >> 1];
229	timers [k]->active = k + 1;	505	((W)heap [k])->active = k + 1;
230	k >>= 1;	506	k >>= 1;
231	}	507	}
232		508
233	timers [k] = w;	509	heap [k] = w;
234	timers [k]->active = k + 1;	510	((W)heap [k])->active = k + 1;
235		511
236	}	512	}
237		513
238	static void	514	static void
239	downheap (WT *timers, int N, int k)	515	downheap (WT *heap, int N, int k)
240	{	516	{
241	WT w = timers [k];	517	WT w = heap [k];
242		518
243	while (k < (N >> 1))	519	while (k < (N >> 1))
244	{	520	{
245	int j = k << 1;	521	int j = k << 1;
246		522
247	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	523	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
248	++j;	524	++j;
249		525
250	if (w->at <= timers [j]->at)	526	if (w->at <= heap [j]->at)
251	break;	527	break;
252		528
253	timers [k] = timers [j];	529	heap [k] = heap [j];
254	timers [k]->active = k + 1;	530	((W)heap [k])->active = k + 1;
255	k = j;	531	k = j;
256	}	532	}
257		533
258	timers [k] = w;	534	heap [k] = w;
259	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
		536	}
		537
		538	inline void
		539	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		540	{
		541	ev_tstamp old_at = heap [k]->at;
		542	heap [k]->at = at;
		543
		544	if (old_at < at)
		545	downheap (heap, N, k);
		546	else
		547	upheap (heap, k);
260	}	548	}
261		549
262	/*****************************************************************************/	550	/*****************************************************************************/
263		551
264	typedef struct	552	typedef struct
265	{	553	{
266	struct ev_signal *head;	554	WL head;
267	sig_atomic_t gotsig;	555	sig_atomic_t volatile gotsig;
268	} ANSIG;	556	} ANSIG;
269		557
270	static ANSIG *signals;	558	static ANSIG *signals;
271	static int signalmax;	559	static int signalmax;
272		560
273	static int sigpipe [2];	561	static int sigpipe [2];
274	static sig_atomic_t gotsig;	562	static sig_atomic_t volatile gotsig;
275	static struct ev_io sigev;	563	static struct ev_io sigev;
276		564
277	static void	565	static void
278	signals_init (ANSIG *base, int count)	566	signals_init (ANSIG *base, int count)
279	{	567	{
280	while (count--)	568	while (count--)
281	{	569	{
282	base->head = 0;	570	base->head = 0;
283	base->gotsig = 0;	571	base->gotsig = 0;
		572
284	++base;	573	++base;
285	}	574	}
286	}	575	}
287		576
288	static void	577	static void
289	sighandler (int signum)	578	sighandler (int signum)
290	{	579	{
		580	#if WIN32
		581	signal (signum, sighandler);
		582	#endif
		583
291	signals [signum - 1].gotsig = 1;	584	signals [signum - 1].gotsig = 1;
292		585
293	if (!gotsig)	586	if (!gotsig)
294	{	587	{
		588	int old_errno = errno;
295	gotsig = 1;	589	gotsig = 1;
		590	#ifdef WIN32
		591	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		592	#else
296	write (sigpipe [1], &gotsig, 1);	593	write (sigpipe [1], &signum, 1);
		594	#endif
		595	errno = old_errno;
297	}	596	}
298	}	597	}
299		598
		599	void
		600	ev_feed_signal_event (EV_P_ int signum)
		601	{
		602	WL w;
		603
		604	#if EV_MULTIPLICITY
		605	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		606	#endif
		607
		608	--signum;
		609
		610	if (signum < 0 \|\| signum >= signalmax)
		611	return;
		612
		613	signals [signum].gotsig = 0;
		614
		615	for (w = signals [signum].head; w; w = w->next)
		616	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		617	}
		618
300	static void	619	static void
301	sigcb (struct ev_io *iow, int revents)	620	sigcb (EV_P_ struct ev_io *iow, int revents)
302	{	621	{
303	struct ev_signal *w;
304	int sig;	622	int signum;
305		623
		624	#ifdef WIN32
		625	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		626	#else
		627	read (sigpipe [0], &revents, 1);
		628	#endif
306	gotsig = 0;	629	gotsig = 0;
307	read (sigpipe [0], &revents, 1);
308		630
309	for (sig = signalmax; sig--; )	631	for (signum = signalmax; signum--; )
310	if (signals [sig].gotsig)	632	if (signals [signum].gotsig)
311	{	633	ev_feed_signal_event (EV_A_ signum + 1);
312	signals [sig].gotsig = 0;
313
314	for (w = signals [sig].head; w; w = w->next)
315	event ((W)w, EV_SIGNAL);
316	}
317	}	634	}
318		635
319	static void	636	static void
320	siginit (void)	637	siginit (EV_P)
321	{	638	{
		639	#ifndef WIN32
322	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	640	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
323	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	641	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
324		642
325	/* rather than sort out wether we really need nb, set it */	643	/* rather than sort out wether we really need nb, set it */
326	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	644	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
327	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	645	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		646	#endif
328		647
329	evio_set (&sigev, sigpipe [0], EV_READ);	648	ev_io_set (&sigev, sigpipe [0], EV_READ);
330	evio_start (&sigev);	649	ev_io_start (EV_A_ &sigev);
		650	ev_unref (EV_A); /* child watcher should not keep loop alive */
331	}	651	}
332		652
333	/*****************************************************************************/	653	/*****************************************************************************/
334		654
335	static struct ev_idle **idles;
336	static int idlemax, idlecnt;
337
338	static struct ev_prepare **prepares;
339	static int preparemax, preparecnt;
340
341	static struct ev_check **checks;
342	static int checkmax, checkcnt;
343
344	/*****************************************************************************/
345
346	static struct ev_child *childs [PID_HASHSIZE];	655	static struct ev_child *childs [PID_HASHSIZE];
		656
		657	#ifndef WIN32
		658
347	static struct ev_signal childev;	659	static struct ev_signal childev;
348		660
349	#ifndef WCONTINUED	661	#ifndef WCONTINUED
350	# define WCONTINUED 0	662	# define WCONTINUED 0
351	#endif	663	#endif
352		664
353	static void	665	static void
354	childcb (struct ev_signal *sw, int revents)	666	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
355	{	667	{
356	struct ev_child *w;	668	struct ev_child *w;
		669
		670	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		671	if (w->pid == pid \|\| !w->pid)
		672	{
		673	ev_priority (w) = ev_priority (sw); /* need to do it now */
		674	w->rpid = pid;
		675	w->rstatus = status;
		676	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		677	}
		678	}
		679
		680	static void
		681	childcb (EV_P_ struct ev_signal *sw, int revents)
		682	{
357	int pid, status;	683	int pid, status;
358		684
359	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	685	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
360	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	686	{
361	if (w->pid == pid \|\| w->pid == -1)	687	/* make sure we are called again until all childs have been reaped */
362	{	688	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
363	w->status = status;	689
364	event ((W)w, EV_CHILD);	690	child_reap (EV_A_ sw, pid, pid, status);
365	}	691	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		692	}
366	}	693	}
		694
		695	#endif
367		696
368	/*****************************************************************************/	697	/*****************************************************************************/
369		698
		699	#if EV_USE_KQUEUE
		700	# include "ev_kqueue.c"
		701	#endif
370	#if HAVE_EPOLL	702	#if EV_USE_EPOLL
371	# include "ev_epoll.c"	703	# include "ev_epoll.c"
372	#endif	704	#endif
		705	#if EV_USE_POLL
		706	# include "ev_poll.c"
		707	#endif
373	#if HAVE_SELECT	708	#if EV_USE_SELECT
374	# include "ev_select.c"	709	# include "ev_select.c"
375	#endif	710	#endif
376		711
377	int ev_init (int flags)	712	int
		713	ev_version_major (void)
378	{	714	{
		715	return EV_VERSION_MAJOR;
		716	}
		717
		718	int
		719	ev_version_minor (void)
		720	{
		721	return EV_VERSION_MINOR;
		722	}
		723
		724	/* return true if we are running with elevated privileges and should ignore env variables */
		725	static int
		726	enable_secure (void)
		727	{
		728	#ifdef WIN32
		729	return 0;
		730	#else
		731	return getuid () != geteuid ()
		732	\|\| getgid () != getegid ();
		733	#endif
		734	}
		735
		736	int
		737	ev_method (EV_P)
		738	{
		739	return method;
		740	}
		741
		742	static void
		743	loop_init (EV_P_ int methods)
		744	{
379	if (!ev_method)	745	if (!method)
380	{	746	{
381	#if HAVE_MONOTONIC	747	#if EV_USE_MONOTONIC
382	{	748	{
383	struct timespec ts;	749	struct timespec ts;
384	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	750	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
385	have_monotonic = 1;	751	have_monotonic = 1;
386	}	752	}
387	#endif	753	#endif
388		754
389	ev_now = ev_time ();	755	ev_rt_now = ev_time ();
390	now = get_clock ();	756	mn_now = get_clock ();
		757	now_floor = mn_now;
391	diff = ev_now - now;	758	rtmn_diff = ev_rt_now - mn_now;
392		759
		760	if (methods == EVMETHOD_AUTO)
		761	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		762	methods = atoi (getenv ("LIBEV_METHODS"));
		763	else
		764	methods = EVMETHOD_ANY;
		765
		766	method = 0;
		767	#if EV_USE_WIN32
		768	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		769	#endif
		770	#if EV_USE_KQUEUE
		771	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		772	#endif
		773	#if EV_USE_EPOLL
		774	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		775	#endif
		776	#if EV_USE_POLL
		777	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		778	#endif
		779	#if EV_USE_SELECT
		780	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
		781	#endif
		782
		783	ev_init (&sigev, sigcb);
		784	ev_set_priority (&sigev, EV_MAXPRI);
		785	}
		786	}
		787
		788	void
		789	loop_destroy (EV_P)
		790	{
		791	int i;
		792
		793	#if EV_USE_WIN32
		794	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		795	#endif
		796	#if EV_USE_KQUEUE
		797	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		798	#endif
		799	#if EV_USE_EPOLL
		800	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		801	#endif
		802	#if EV_USE_POLL
		803	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		804	#endif
		805	#if EV_USE_SELECT
		806	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		807	#endif
		808
		809	for (i = NUMPRI; i--; )
		810	array_free (pending, [i]);
		811
		812	/* have to use the microsoft-never-gets-it-right macro */
		813	array_free_microshit (fdchange);
		814	array_free_microshit (timer);
		815	#if EV_PERIODICS
		816	array_free_microshit (periodic);
		817	#endif
		818	array_free_microshit (idle);
		819	array_free_microshit (prepare);
		820	array_free_microshit (check);
		821
		822	method = 0;
		823	}
		824
		825	static void
		826	loop_fork (EV_P)
		827	{
		828	#if EV_USE_EPOLL
		829	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		830	#endif
		831	#if EV_USE_KQUEUE
		832	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		833	#endif
		834
		835	if (ev_is_active (&sigev))
		836	{
		837	/* default loop */
		838
		839	ev_ref (EV_A);
		840	ev_io_stop (EV_A_ &sigev);
		841	close (sigpipe [0]);
		842	close (sigpipe [1]);
		843
		844	while (pipe (sigpipe))
		845	syserr ("(libev) error creating pipe");
		846
		847	siginit (EV_A);
		848	}
		849
		850	postfork = 0;
		851	}
		852
		853	#if EV_MULTIPLICITY
		854	struct ev_loop *
		855	ev_loop_new (int methods)
		856	{
		857	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		858
		859	memset (loop, 0, sizeof (struct ev_loop));
		860
		861	loop_init (EV_A_ methods);
		862
		863	if (ev_method (EV_A))
		864	return loop;
		865
		866	return 0;
		867	}
		868
		869	void
		870	ev_loop_destroy (EV_P)
		871	{
		872	loop_destroy (EV_A);
		873	ev_free (loop);
		874	}
		875
		876	void
		877	ev_loop_fork (EV_P)
		878	{
		879	postfork = 1;
		880	}
		881
		882	#endif
		883
		884	#if EV_MULTIPLICITY
		885	struct ev_loop *
		886	#else
		887	int
		888	#endif
		889	ev_default_loop (int methods)
		890	{
		891	if (sigpipe [0] == sigpipe [1])
393	if (pipe (sigpipe))	892	if (pipe (sigpipe))
394	return 0;	893	return 0;
395		894
396	ev_method = EVMETHOD_NONE;	895	if (!default_loop)
397	#if HAVE_EPOLL	896	{
398	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	897	#if EV_MULTIPLICITY
		898	struct ev_loop *loop = default_loop = &default_loop_struct;
		899	#else
		900	default_loop = 1;
399	#endif	901	#endif
400	#if HAVE_SELECT
401	if (ev_method == EVMETHOD_NONE) select_init (flags);
402	#endif
403		902
		903	loop_init (EV_A_ methods);
		904
404	if (ev_method)	905	if (ev_method (EV_A))
405	{	906	{
406	evw_init (&sigev, sigcb);
407	siginit ();	907	siginit (EV_A);
408		908
		909	#ifndef WIN32
409	evsignal_init (&childev, childcb, SIGCHLD);	910	ev_signal_init (&childev, childcb, SIGCHLD);
		911	ev_set_priority (&childev, EV_MAXPRI);
410	evsignal_start (&childev);	912	ev_signal_start (EV_A_ &childev);
		913	ev_unref (EV_A); /* child watcher should not keep loop alive */
		914	#endif
411	}	915	}
		916	else
		917	default_loop = 0;
412	}	918	}
413		919
414	return ev_method;	920	return default_loop;
		921	}
		922
		923	void
		924	ev_default_destroy (void)
		925	{
		926	#if EV_MULTIPLICITY
		927	struct ev_loop *loop = default_loop;
		928	#endif
		929
		930	#ifndef WIN32
		931	ev_ref (EV_A); /* child watcher */
		932	ev_signal_stop (EV_A_ &childev);
		933	#endif
		934
		935	ev_ref (EV_A); /* signal watcher */
		936	ev_io_stop (EV_A_ &sigev);
		937
		938	close (sigpipe [0]); sigpipe [0] = 0;
		939	close (sigpipe [1]); sigpipe [1] = 0;
		940
		941	loop_destroy (EV_A);
		942	}
		943
		944	void
		945	ev_default_fork (void)
		946	{
		947	#if EV_MULTIPLICITY
		948	struct ev_loop *loop = default_loop;
		949	#endif
		950
		951	if (method)
		952	postfork = 1;
415	}	953	}
416		954
417	/*****************************************************************************/	955	/*****************************************************************************/
418		956
419	void ev_prefork (void)
420	{
421	/* nop */
422	}
423
424	void ev_postfork_parent (void)
425	{
426	/* nop */
427	}
428
429	void ev_postfork_child (void)
430	{
431	#if HAVE_EPOLL
432	if (ev_method == EVMETHOD_EPOLL)
433	epoll_postfork_child ();
434	#endif
435
436	evio_stop (&sigev);
437	close (sigpipe [0]);
438	close (sigpipe [1]);
439	pipe (sigpipe);
440	siginit ();
441	}
442
443	/*****************************************************************************/
444
445	static void	957	static int
446	fd_reify (void)	958	any_pending (EV_P)
447	{	959	{
448	int i;	960	int pri;
449		961
450	for (i = 0; i < fdchangecnt; ++i)	962	for (pri = NUMPRI; pri--; )
451	{	963	if (pendingcnt [pri])
452	int fd = fdchanges [i];	964	return 1;
453	ANFD *anfd = anfds + fd;
454	struct ev_io *w;
455		965
456	int wev = 0;	966	return 0;
457
458	for (w = anfd->head; w; w = w->next)
459	wev \|= w->events;
460
461	if (anfd->wev != wev)
462	{
463	method_modify (fd, anfd->wev, wev);
464	anfd->wev = wev;
465	}
466	}
467
468	fdchangecnt = 0;
469	}	967	}
470		968
471	static void	969	static void
472	call_pending ()	970	call_pending (EV_P)
473	{	971	{
		972	int pri;
		973
		974	for (pri = NUMPRI; pri--; )
474	while (pendingcnt)	975	while (pendingcnt [pri])
475	{	976	{
476	ANPENDING *p = pendings + --pendingcnt;	977	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
477		978
478	if (p->w)	979	if (p->w)
479	{	980	{
480	p->w->pending = 0;	981	p->w->pending = 0;
481	p->w->cb (p->w, p->events);	982	EV_CB_INVOKE (p->w, p->events);
482	}	983	}
483	}	984	}
484	}	985	}
485		986
486	static void	987	static void
487	timers_reify ()	988	timers_reify (EV_P)
488	{	989	{
489	while (timercnt && timers [0]->at <= now)	990	while (timercnt && ((WT)timers [0])->at <= mn_now)
490	{	991	{
491	struct ev_timer *w = timers [0];	992	struct ev_timer *w = timers [0];
492		993
493	event ((W)w, EV_TIMEOUT);	994	assert (("inactive timer on timer heap detected", ev_is_active (w)));
494		995
495	/* first reschedule or stop timer */	996	/* first reschedule or stop timer */
496	if (w->repeat)	997	if (w->repeat)
497	{	998	{
		999	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1000
498	w->at = now + w->repeat;	1001	((WT)w)->at += w->repeat;
499	assert (("timer timeout in the past, negative repeat?", w->at > now));	1002	if (((WT)w)->at < mn_now)
		1003	((WT)w)->at = mn_now;
		1004
500	downheap ((WT *)timers, timercnt, 0);	1005	downheap ((WT *)timers, timercnt, 0);
501	}	1006	}
502	else	1007	else
503	evtimer_stop (w); /* nonrepeating: stop timer */	1008	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
504	}
505	}
506		1009
		1010	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1011	}
		1012	}
		1013
		1014	#if EV_PERIODICS
507	static void	1015	static void
508	periodics_reify ()	1016	periodics_reify (EV_P)
509	{	1017	{
510	while (periodiccnt && periodics [0]->at <= ev_now)	1018	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
511	{	1019	{
512	struct ev_periodic *w = periodics [0];	1020	struct ev_periodic *w = periodics [0];
513		1021
		1022	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1023
514	/* first reschedule or stop timer */	1024	/* first reschedule or stop timer */
515	if (w->interval)	1025	if (w->reschedule_cb)
516	{	1026	{
		1027	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1028
		1029	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1030	downheap ((WT *)periodics, periodiccnt, 0);
		1031	}
		1032	else if (w->interval)
		1033	{
517	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1034	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
518	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1035	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
519	downheap ((WT *)periodics, periodiccnt, 0);	1036	downheap ((WT *)periodics, periodiccnt, 0);
520	}	1037	}
521	else	1038	else
522	evperiodic_stop (w); /* nonrepeating: stop timer */	1039	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
523		1040
524	event ((W)w, EV_TIMEOUT);	1041	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
525	}	1042	}
526	}	1043	}
527		1044
528	static void	1045	static void
529	periodics_reschedule (ev_tstamp diff)	1046	periodics_reschedule (EV_P)
530	{	1047	{
531	int i;	1048	int i;
532		1049
533	/* adjust periodics after time jump */	1050	/* adjust periodics after time jump */
534	for (i = 0; i < periodiccnt; ++i)	1051	for (i = 0; i < periodiccnt; ++i)
535	{	1052	{
536	struct ev_periodic *w = periodics [i];	1053	struct ev_periodic *w = periodics [i];
537		1054
		1055	if (w->reschedule_cb)
		1056	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
538	if (w->interval)	1057	else if (w->interval)
		1058	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1059	}
		1060
		1061	/* now rebuild the heap */
		1062	for (i = periodiccnt >> 1; i--; )
		1063	downheap ((WT *)periodics, periodiccnt, i);
		1064	}
		1065	#endif
		1066
		1067	inline int
		1068	time_update_monotonic (EV_P)
		1069	{
		1070	mn_now = get_clock ();
		1071
		1072	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1073	{
		1074	ev_rt_now = rtmn_diff + mn_now;
		1075	return 0;
		1076	}
		1077	else
		1078	{
		1079	now_floor = mn_now;
		1080	ev_rt_now = ev_time ();
		1081	return 1;
		1082	}
		1083	}
		1084
		1085	static void
		1086	time_update (EV_P)
		1087	{
		1088	int i;
		1089
		1090	#if EV_USE_MONOTONIC
		1091	if (expect_true (have_monotonic))
		1092	{
		1093	if (time_update_monotonic (EV_A))
539	{	1094	{
540	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1095	ev_tstamp odiff = rtmn_diff;
541		1096
542	if (fabs (diff) >= 1e-4)	1097	for (i = 4; --i; ) /* loop a few times, before making important decisions */
543	{	1098	{
544	evperiodic_stop (w);	1099	rtmn_diff = ev_rt_now - mn_now;
545	evperiodic_start (w);
546		1100
547	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1101	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1102	return; /* all is well */
		1103
		1104	ev_rt_now = ev_time ();
		1105	mn_now = get_clock ();
		1106	now_floor = mn_now;
548	}	1107	}
		1108
		1109	# if EV_PERIODICS
		1110	periodics_reschedule (EV_A);
		1111	# endif
		1112	/* no timer adjustment, as the monotonic clock doesn't jump */
		1113	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
549	}	1114	}
550	}	1115	}
551	}	1116	else
552		1117	#endif
553	static void	1118	{
554	time_update ()
555	{
556	int i;
557
558	ev_now = ev_time ();	1119	ev_rt_now = ev_time ();
559		1120
560	if (have_monotonic)	1121	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
561	{
562	ev_tstamp odiff = diff;
563
564	for (i = 4; --i; ) /* loop a few times, before making important decisions */
565	{	1122	{
566	now = get_clock ();	1123	#if EV_PERIODICS
567	diff = ev_now - now;
568
569	if (fabs (odiff - diff) < MIN_TIMEJUMP)
570	return; /* all is well */
571
572	ev_now = ev_time ();
573	}
574
575	periodics_reschedule (diff - odiff);
576	/* no timer adjustment, as the monotonic clock doesn't jump */
577	}
578	else
579	{
580	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
581	{
582	periodics_reschedule (ev_now - now);	1124	periodics_reschedule (EV_A);
		1125	#endif
583		1126
584	/* adjust timers. this is easy, as the offset is the same for all */	1127	/* adjust timers. this is easy, as the offset is the same for all */
585	for (i = 0; i < timercnt; ++i)	1128	for (i = 0; i < timercnt; ++i)
586	timers [i]->at += diff;	1129	((WT)timers [i])->at += ev_rt_now - mn_now;
587	}	1130	}
588		1131
589	now = ev_now;	1132	mn_now = ev_rt_now;
590	}	1133	}
591	}	1134	}
592		1135
593	int ev_loop_done;	1136	void
		1137	ev_ref (EV_P)
		1138	{
		1139	++activecnt;
		1140	}
594		1141
		1142	void
		1143	ev_unref (EV_P)
		1144	{
		1145	--activecnt;
		1146	}
		1147
		1148	static int loop_done;
		1149
		1150	void
595	void ev_loop (int flags)	1151	ev_loop (EV_P_ int flags)
596	{	1152	{
597	double block;	1153	double block;
598	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	1154	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
599		1155
600	do	1156	do
601	{	1157	{
602	/* queue check watchers (and execute them) */	1158	/* queue check watchers (and execute them) */
603	if (preparecnt)	1159	if (expect_false (preparecnt))
604	{	1160	{
605	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1161	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
606	call_pending ();	1162	call_pending (EV_A);
607	}	1163	}
608		1164
		1165	/* we might have forked, so reify kernel state if necessary */
		1166	if (expect_false (postfork))
		1167	loop_fork (EV_A);
		1168
609	/* update fd-related kernel structures */	1169	/* update fd-related kernel structures */
610	fd_reify ();	1170	fd_reify (EV_A);
611		1171
612	/* calculate blocking time */	1172	/* calculate blocking time */
613		1173
614	/* we only need this for !monotonic clockor timers, but as we basically	1174	/* we only need this for !monotonic clock or timers, but as we basically
615	always have timers, we just calculate it always */	1175	always have timers, we just calculate it always */
		1176	#if EV_USE_MONOTONIC
		1177	if (expect_true (have_monotonic))
		1178	time_update_monotonic (EV_A);
		1179	else
		1180	#endif
		1181	{
616	ev_now = ev_time ();	1182	ev_rt_now = ev_time ();
		1183	mn_now = ev_rt_now;
		1184	}
617		1185
618	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1186	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
619	block = 0.;	1187	block = 0.;
620	else	1188	else
621	{	1189	{
622	block = MAX_BLOCKTIME;	1190	block = MAX_BLOCKTIME;
623		1191
624	if (timercnt)	1192	if (timercnt)
625	{	1193	{
626	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1194	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
627	if (block > to) block = to;	1195	if (block > to) block = to;
628	}	1196	}
629		1197
		1198	#if EV_PERIODICS
630	if (periodiccnt)	1199	if (periodiccnt)
631	{	1200	{
632	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1201	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
633	if (block > to) block = to;	1202	if (block > to) block = to;
634	}	1203	}
		1204	#endif
635		1205
636	if (block < 0.) block = 0.;	1206	if (block < 0.) block = 0.;
637	}	1207	}
638		1208
639	method_poll (block);	1209	method_poll (EV_A_ block);
640		1210
641	/* update ev_now, do magic */	1211	/* update ev_rt_now, do magic */
642	time_update ();	1212	time_update (EV_A);
643		1213
644	/* queue pending timers and reschedule them */	1214	/* queue pending timers and reschedule them */
645	timers_reify (); /* relative timers called last */	1215	timers_reify (EV_A); /* relative timers called last */
		1216	#if EV_PERIODICS
646	periodics_reify (); /* absolute timers called first */	1217	periodics_reify (EV_A); /* absolute timers called first */
		1218	#endif
647		1219
648	/* queue idle watchers unless io or timers are pending */	1220	/* queue idle watchers unless io or timers are pending */
649	if (!pendingcnt)	1221	if (idlecnt && !any_pending (EV_A))
650	queue_events ((W *)idles, idlecnt, EV_IDLE);	1222	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
651		1223
652	/* queue check watchers, to be executed first */	1224	/* queue check watchers, to be executed first */
653	if (checkcnt)	1225	if (checkcnt)
654	queue_events ((W *)checks, checkcnt, EV_CHECK);	1226	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
655		1227
656	call_pending ();	1228	call_pending (EV_A);
657	}	1229	}
658	while (!ev_loop_done);	1230	while (activecnt && !loop_done);
659		1231
660	if (ev_loop_done != 2)	1232	if (loop_done != 2)
661	ev_loop_done = 0;	1233	loop_done = 0;
		1234	}
		1235
		1236	void
		1237	ev_unloop (EV_P_ int how)
		1238	{
		1239	loop_done = how;
662	}	1240	}
663		1241
664	/*****************************************************************************/	1242	/*****************************************************************************/
665		1243
666	static void	1244	inline void
667	wlist_add (WL *head, WL elem)	1245	wlist_add (WL *head, WL elem)
668	{	1246	{
669	elem->next = *head;	1247	elem->next = *head;
670	*head = elem;	1248	*head = elem;
671	}	1249	}
672		1250
673	static void	1251	inline void
674	wlist_del (WL *head, WL elem)	1252	wlist_del (WL *head, WL elem)
675	{	1253	{
676	while (*head)	1254	while (*head)
677	{	1255	{
678	if (*head == elem)	1256	if (*head == elem)
…		…
683		1261
684	head = &(*head)->next;	1262	head = &(*head)->next;
685	}	1263	}
686	}	1264	}
687		1265
688	static void	1266	inline void
689	ev_clear (W w)	1267	ev_clear_pending (EV_P_ W w)
690	{	1268	{
691	if (w->pending)	1269	if (w->pending)
692	{	1270	{
693	pendings [w->pending - 1].w = 0;	1271	pendings [ABSPRI (w)][w->pending - 1].w = 0;
694	w->pending = 0;	1272	w->pending = 0;
695	}	1273	}
696	}	1274	}
697		1275
698	static void	1276	inline void
699	ev_start (W w, int active)	1277	ev_start (EV_P_ W w, int active)
700	{	1278	{
		1279	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1280	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1281
701	w->active = active;	1282	w->active = active;
		1283	ev_ref (EV_A);
702	}	1284	}
703		1285
704	static void	1286	inline void
705	ev_stop (W w)	1287	ev_stop (EV_P_ W w)
706	{	1288	{
		1289	ev_unref (EV_A);
707	w->active = 0;	1290	w->active = 0;
708	}	1291	}
709		1292
710	/*****************************************************************************/	1293	/*****************************************************************************/
711		1294
712	void	1295	void
713	evio_start (struct ev_io *w)	1296	ev_io_start (EV_P_ struct ev_io *w)
714	{	1297	{
		1298	int fd = w->fd;
		1299
715	if (ev_is_active (w))	1300	if (ev_is_active (w))
716	return;	1301	return;
717		1302
718	int fd = w->fd;	1303	assert (("ev_io_start called with negative fd", fd >= 0));
719		1304
720	ev_start ((W)w, 1);	1305	ev_start (EV_A_ (W)w, 1);
721	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1306	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
722	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1307	wlist_add ((WL *)&anfds[fd].head, (WL)w);
723		1308
724	++fdchangecnt;	1309	fd_change (EV_A_ fd);
725	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
726	fdchanges [fdchangecnt - 1] = fd;
727	}	1310	}
728		1311
729	void	1312	void
730	evio_stop (struct ev_io *w)	1313	ev_io_stop (EV_P_ struct ev_io *w)
731	{	1314	{
732	ev_clear ((W)w);	1315	ev_clear_pending (EV_A_ (W)w);
733	if (!ev_is_active (w))	1316	if (!ev_is_active (w))
734	return;	1317	return;
735		1318
		1319	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1320
736	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1321	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
737	ev_stop ((W)w);	1322	ev_stop (EV_A_ (W)w);
738		1323
739	++fdchangecnt;	1324	fd_change (EV_A_ w->fd);
740	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
741	fdchanges [fdchangecnt - 1] = w->fd;
742	}	1325	}
743		1326
744	void	1327	void
745	evtimer_start (struct ev_timer *w)	1328	ev_timer_start (EV_P_ struct ev_timer *w)
746	{	1329	{
747	if (ev_is_active (w))	1330	if (ev_is_active (w))
748	return;	1331	return;
749		1332
750	w->at += now;	1333	((WT)w)->at += mn_now;
751		1334
752	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1335	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
753		1336
754	ev_start ((W)w, ++timercnt);	1337	ev_start (EV_A_ (W)w, ++timercnt);
755	array_needsize (timers, timermax, timercnt, );	1338	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
756	timers [timercnt - 1] = w;	1339	timers [timercnt - 1] = w;
757	upheap ((WT *)timers, timercnt - 1);	1340	upheap ((WT *)timers, timercnt - 1);
758	}
759		1341
		1342	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1343	}
		1344
760	void	1345	void
761	evtimer_stop (struct ev_timer *w)	1346	ev_timer_stop (EV_P_ struct ev_timer *w)
762	{	1347	{
763	ev_clear ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
764	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
765	return;	1350	return;
766		1351
		1352	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1353
767	if (w->active < timercnt--)	1354	if (((W)w)->active < timercnt--)
768	{	1355	{
769	timers [w->active - 1] = timers [timercnt];	1356	timers [((W)w)->active - 1] = timers [timercnt];
770	downheap ((WT *)timers, timercnt, w->active - 1);	1357	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
771	}	1358	}
772		1359
773	w->at = w->repeat;	1360	((WT)w)->at -= mn_now;
774		1361
775	ev_stop ((W)w);	1362	ev_stop (EV_A_ (W)w);
776	}	1363	}
777		1364
778	void	1365	void
779	evtimer_again (struct ev_timer *w)	1366	ev_timer_again (EV_P_ struct ev_timer *w)
780	{	1367	{
781	if (ev_is_active (w))	1368	if (ev_is_active (w))
782	{	1369	{
783	if (w->repeat)	1370	if (w->repeat)
784	{
785	w->at = now + w->repeat;
786	downheap ((WT *)timers, timercnt, w->active - 1);	1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
787	}
788	else	1372	else
789	evtimer_stop (w);	1373	ev_timer_stop (EV_A_ w);
790	}	1374	}
791	else if (w->repeat)	1375	else if (w->repeat)
792	evtimer_start (w);	1376	ev_timer_start (EV_A_ w);
793	}	1377	}
794		1378
		1379	#if EV_PERIODICS
795	void	1380	void
796	evperiodic_start (struct ev_periodic *w)	1381	ev_periodic_start (EV_P_ struct ev_periodic *w)
797	{	1382	{
798	if (ev_is_active (w))	1383	if (ev_is_active (w))
799	return;	1384	return;
800		1385
801	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1386	if (w->reschedule_cb)
802		1387	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1388	else if (w->interval)
		1389	{
		1390	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
803	/* this formula differs from the one in periodic_reify because we do not always round up */	1391	/* this formula differs from the one in periodic_reify because we do not always round up */
804	if (w->interval)
805	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1392	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1393	}
806		1394
807	ev_start ((W)w, ++periodiccnt);	1395	ev_start (EV_A_ (W)w, ++periodiccnt);
808	array_needsize (periodics, periodicmax, periodiccnt, );	1396	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
809	periodics [periodiccnt - 1] = w;	1397	periodics [periodiccnt - 1] = w;
810	upheap ((WT *)periodics, periodiccnt - 1);	1398	upheap ((WT *)periodics, periodiccnt - 1);
811	}
812		1399
		1400	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1401	}
		1402
813	void	1403	void
814	evperiodic_stop (struct ev_periodic *w)	1404	ev_periodic_stop (EV_P_ struct ev_periodic *w)
815	{	1405	{
816	ev_clear ((W)w);	1406	ev_clear_pending (EV_A_ (W)w);
817	if (!ev_is_active (w))	1407	if (!ev_is_active (w))
818	return;	1408	return;
819		1409
		1410	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1411
820	if (w->active < periodiccnt--)	1412	if (((W)w)->active < periodiccnt--)
821	{	1413	{
822	periodics [w->active - 1] = periodics [periodiccnt];	1414	periodics [((W)w)->active - 1] = periodics [periodiccnt];
823	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1415	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
824	}	1416	}
825		1417
826	ev_stop ((W)w);	1418	ev_stop (EV_A_ (W)w);
827	}	1419	}
828		1420
829	void	1421	void
830	evsignal_start (struct ev_signal *w)	1422	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1423	{
		1424	/* TODO: use adjustheap and recalculation */
		1425	ev_periodic_stop (EV_A_ w);
		1426	ev_periodic_start (EV_A_ w);
		1427	}
		1428	#endif
		1429
		1430	void
		1431	ev_idle_start (EV_P_ struct ev_idle *w)
831	{	1432	{
832	if (ev_is_active (w))	1433	if (ev_is_active (w))
833	return;	1434	return;
834		1435
		1436	ev_start (EV_A_ (W)w, ++idlecnt);
		1437	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1438	idles [idlecnt - 1] = w;
		1439	}
		1440
		1441	void
		1442	ev_idle_stop (EV_P_ struct ev_idle *w)
		1443	{
		1444	ev_clear_pending (EV_A_ (W)w);
		1445	if (ev_is_active (w))
		1446	return;
		1447
		1448	idles [((W)w)->active - 1] = idles [--idlecnt];
		1449	ev_stop (EV_A_ (W)w);
		1450	}
		1451
		1452	void
		1453	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1454	{
		1455	if (ev_is_active (w))
		1456	return;
		1457
		1458	ev_start (EV_A_ (W)w, ++preparecnt);
		1459	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1460	prepares [preparecnt - 1] = w;
		1461	}
		1462
		1463	void
		1464	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1465	{
		1466	ev_clear_pending (EV_A_ (W)w);
		1467	if (ev_is_active (w))
		1468	return;
		1469
		1470	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1471	ev_stop (EV_A_ (W)w);
		1472	}
		1473
		1474	void
		1475	ev_check_start (EV_P_ struct ev_check *w)
		1476	{
		1477	if (ev_is_active (w))
		1478	return;
		1479
		1480	ev_start (EV_A_ (W)w, ++checkcnt);
		1481	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1482	checks [checkcnt - 1] = w;
		1483	}
		1484
		1485	void
		1486	ev_check_stop (EV_P_ struct ev_check *w)
		1487	{
		1488	ev_clear_pending (EV_A_ (W)w);
		1489	if (!ev_is_active (w))
		1490	return;
		1491
		1492	checks [((W)w)->active - 1] = checks [--checkcnt];
		1493	ev_stop (EV_A_ (W)w);
		1494	}
		1495
		1496	#ifndef SA_RESTART
		1497	# define SA_RESTART 0
		1498	#endif
		1499
		1500	void
		1501	ev_signal_start (EV_P_ struct ev_signal *w)
		1502	{
		1503	#if EV_MULTIPLICITY
		1504	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1505	#endif
		1506	if (ev_is_active (w))
		1507	return;
		1508
		1509	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1510
835	ev_start ((W)w, 1);	1511	ev_start (EV_A_ (W)w, 1);
836	array_needsize (signals, signalmax, w->signum, signals_init);	1512	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
837	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1513	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
838		1514
839	if (!w->next)	1515	if (!((WL)w)->next)
840	{	1516	{
		1517	#if WIN32
		1518	signal (w->signum, sighandler);
		1519	#else
841	struct sigaction sa;	1520	struct sigaction sa;
842	sa.sa_handler = sighandler;	1521	sa.sa_handler = sighandler;
843	sigfillset (&sa.sa_mask);	1522	sigfillset (&sa.sa_mask);
844	sa.sa_flags = 0;	1523	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
845	sigaction (w->signum, &sa, 0);	1524	sigaction (w->signum, &sa, 0);
		1525	#endif
846	}	1526	}
847	}	1527	}
848		1528
849	void	1529	void
850	evsignal_stop (struct ev_signal *w)	1530	ev_signal_stop (EV_P_ struct ev_signal *w)
851	{	1531	{
852	ev_clear ((W)w);	1532	ev_clear_pending (EV_A_ (W)w);
853	if (!ev_is_active (w))	1533	if (!ev_is_active (w))
854	return;	1534	return;
855		1535
856	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1536	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
857	ev_stop ((W)w);	1537	ev_stop (EV_A_ (W)w);
858		1538
859	if (!signals [w->signum - 1].head)	1539	if (!signals [w->signum - 1].head)
860	signal (w->signum, SIG_DFL);	1540	signal (w->signum, SIG_DFL);
861	}	1541	}
862		1542
863	void evidle_start (struct ev_idle *w)	1543	void
		1544	ev_child_start (EV_P_ struct ev_child *w)
864	{	1545	{
		1546	#if EV_MULTIPLICITY
		1547	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1548	#endif
865	if (ev_is_active (w))	1549	if (ev_is_active (w))
866	return;	1550	return;
867		1551
868	ev_start ((W)w, ++idlecnt);
869	array_needsize (idles, idlemax, idlecnt, );
870	idles [idlecnt - 1] = w;
871	}
872
873	void evidle_stop (struct ev_idle *w)
874	{
875	ev_clear ((W)w);
876	if (ev_is_active (w))
877	return;
878
879	idles [w->active - 1] = idles [--idlecnt];
880	ev_stop ((W)w);
881	}
882
883	void evprepare_start (struct ev_prepare *w)
884	{
885	if (ev_is_active (w))
886	return;
887
888	ev_start ((W)w, ++preparecnt);
889	array_needsize (prepares, preparemax, preparecnt, );
890	prepares [preparecnt - 1] = w;
891	}
892
893	void evprepare_stop (struct ev_prepare *w)
894	{
895	ev_clear ((W)w);
896	if (ev_is_active (w))
897	return;
898
899	prepares [w->active - 1] = prepares [--preparecnt];
900	ev_stop ((W)w);
901	}
902
903	void evcheck_start (struct ev_check *w)
904	{
905	if (ev_is_active (w))
906	return;
907
908	ev_start ((W)w, ++checkcnt);
909	array_needsize (checks, checkmax, checkcnt, );
910	checks [checkcnt - 1] = w;
911	}
912
913	void evcheck_stop (struct ev_check *w)
914	{
915	ev_clear ((W)w);
916	if (ev_is_active (w))
917	return;
918
919	checks [w->active - 1] = checks [--checkcnt];
920	ev_stop ((W)w);
921	}
922
923	void evchild_start (struct ev_child *w)
924	{
925	if (ev_is_active (w))
926	return;
927
928	ev_start ((W)w, 1);	1552	ev_start (EV_A_ (W)w, 1);
929	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1553	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
930	}	1554	}
931		1555
		1556	void
932	void evchild_stop (struct ev_child *w)	1557	ev_child_stop (EV_P_ struct ev_child *w)
933	{	1558	{
934	ev_clear ((W)w);	1559	ev_clear_pending (EV_A_ (W)w);
935	if (ev_is_active (w))	1560	if (!ev_is_active (w))
936	return;	1561	return;
937		1562
938	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1563	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
939	ev_stop ((W)w);	1564	ev_stop (EV_A_ (W)w);
940	}	1565	}
941		1566
942	/*****************************************************************************/	1567	/*****************************************************************************/
943		1568
944	struct ev_once	1569	struct ev_once
…		…
948	void (cb)(int revents, void arg);	1573	void (cb)(int revents, void arg);
949	void *arg;	1574	void *arg;
950	};	1575	};
951		1576
952	static void	1577	static void
953	once_cb (struct ev_once *once, int revents)	1578	once_cb (EV_P_ struct ev_once *once, int revents)
954	{	1579	{
955	void (cb)(int revents, void arg) = once->cb;	1580	void (cb)(int revents, void arg) = once->cb;
956	void *arg = once->arg;	1581	void *arg = once->arg;
957		1582
958	evio_stop (&once->io);	1583	ev_io_stop (EV_A_ &once->io);
959	evtimer_stop (&once->to);	1584	ev_timer_stop (EV_A_ &once->to);
960	free (once);	1585	ev_free (once);
961		1586
962	cb (revents, arg);	1587	cb (revents, arg);
963	}	1588	}
964		1589
965	static void	1590	static void
966	once_cb_io (struct ev_io *w, int revents)	1591	once_cb_io (EV_P_ struct ev_io *w, int revents)
967	{	1592	{
968	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1593	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
969	}	1594	}
970		1595
971	static void	1596	static void
972	once_cb_to (struct ev_timer *w, int revents)	1597	once_cb_to (EV_P_ struct ev_timer *w, int revents)
973	{	1598	{
974	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1599	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
975	}	1600	}
976		1601
977	void	1602	void
978	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1603	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
979	{	1604	{
980	struct ev_once *once = malloc (sizeof (struct ev_once));	1605	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
981		1606
982	if (!once)	1607	if (!once)
983	cb (EV_ERROR, arg);	1608	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
984	else	1609	else
985	{	1610	{
986	once->cb = cb;	1611	once->cb = cb;
987	once->arg = arg;	1612	once->arg = arg;
988		1613
989	evw_init (&once->io, once_cb_io);	1614	ev_init (&once->io, once_cb_io);
990
991	if (fd >= 0)	1615	if (fd >= 0)
992	{	1616	{
993	evio_set (&once->io, fd, events);	1617	ev_io_set (&once->io, fd, events);
994	evio_start (&once->io);	1618	ev_io_start (EV_A_ &once->io);
995	}	1619	}
996		1620
997	evw_init (&once->to, once_cb_to);	1621	ev_init (&once->to, once_cb_to);
998
999	if (timeout >= 0.)	1622	if (timeout >= 0.)
1000	{	1623	{
1001	evtimer_set (&once->to, timeout, 0.);	1624	ev_timer_set (&once->to, timeout, 0.);
1002	evtimer_start (&once->to);	1625	ev_timer_start (EV_A_ &once->to);
1003	}	1626	}
1004	}	1627	}
1005	}	1628	}
1006		1629
1007	/*****************************************************************************/	1630	#ifdef __cplusplus
1008
1009	#if 0
1010
1011	struct ev_io wio;
1012
1013	static void
1014	sin_cb (struct ev_io *w, int revents)
1015	{
1016	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1017	}	1631	}
1018
1019	static void
1020	ocb (struct ev_timer *w, int revents)
1021	{
1022	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1023	evtimer_stop (w);
1024	evtimer_start (w);
1025	}
1026
1027	static void
1028	scb (struct ev_signal *w, int revents)
1029	{
1030	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1031	evio_stop (&wio);
1032	evio_start (&wio);
1033	}
1034
1035	static void
1036	gcb (struct ev_signal *w, int revents)
1037	{
1038	fprintf (stderr, "generic %x\n", revents);
1039
1040	}
1041
1042	int main (void)
1043	{
1044	ev_init (0);
1045
1046	evio_init (&wio, sin_cb, 0, EV_READ);
1047	evio_start (&wio);
1048
1049	struct ev_timer t[10000];
1050
1051	#if 0
1052	int i;
1053	for (i = 0; i < 10000; ++i)
1054	{
1055	struct ev_timer *w = t + i;
1056	evw_init (w, ocb, i);
1057	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
1058	evtimer_start (w);
1059	if (drand48 () < 0.5)
1060	evtimer_stop (w);
1061	}
1062	#endif	1632	#endif
1063		1633
1064	struct ev_timer t1;
1065	evtimer_init (&t1, ocb, 5, 10);
1066	evtimer_start (&t1);
1067
1068	struct ev_signal sig;
1069	evsignal_init (&sig, scb, SIGQUIT);
1070	evsignal_start (&sig);
1071
1072	struct ev_check cw;
1073	evcheck_init (&cw, gcb);
1074	evcheck_start (&cw);
1075
1076	struct ev_idle iw;
1077	evidle_init (&iw, gcb);
1078	evidle_start (&iw);
1079
1080	ev_loop (0);
1081
1082	return 0;
1083	}
1084
1085	#endif
1086
1087
1088
1089

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.23 by root, Wed Oct 31 20:10:17 2007 UTC vs. Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.23 by root, Wed Oct 31 20:10:17 2007 UTC vs.
Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC