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Comparing libev/ev.c (file contents):
Revision 1.34 by root, Thu Nov 1 11:43:11 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
…		…
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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
30	# include "config.h"	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
31	#endif	64	#endif
32		65
33	#include <math.h>	66	#include <math.h>
34	#include <stdlib.h>	67	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	68	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	69	#include <stddef.h>
39		70
40	#include <stdio.h>	71	#include <stdio.h>
41		72
42	#include <assert.h>	73	#include <assert.h>
43	#include <errno.h>	74	#include <errno.h>
44	#include <sys/types.h>	75	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	76	#include <time.h>
48		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
49	#ifndef EV_USE_MONOTONIC	87	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	88	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	89	#endif
54		90
55	#ifndef EV_USE_SELECT	91	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	92	# define EV_USE_SELECT 1
57	#endif	93	#endif
58		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
59	#ifndef EV_USE_EPOLL	99	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	100	# define EV_USE_EPOLL 0
61	#endif	101	#endif
62		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
		114	# endif
		115	#endif
		116
		117	#ifndef EV_USE_REALTIME
		118	# define EV_USE_REALTIME 1
		119	#endif
		120
		121	/**/
		122
		123	#ifndef CLOCK_MONOTONIC
		124	# undef EV_USE_MONOTONIC
		125	# define EV_USE_MONOTONIC 0
		126	#endif
		127
63	#ifndef CLOCK_REALTIME	128	#ifndef CLOCK_REALTIME
		129	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	130	# define EV_USE_REALTIME 0
65	#endif	131	#endif
66	#ifndef EV_USE_REALTIME	132
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	133	/**/
68	#endif
69		134
70	#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) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	136	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
72	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
73	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	138	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
74		139
		140	#ifdef EV_H
		141	# include EV_H
		142	#else
75	#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)
76		159
77	typedef struct ev_watcher *W;	160	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	161	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	162	typedef struct ev_watcher_time *WT;
80		163
81	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
82	ev_tstamp ev_now;	249	ev_tstamp ev_rt_now;
83	int ev_method;	250	#define VAR(name,decl) static decl;
		251	#include "ev_vars.h"
		252	#undef VAR
84		253
85	static int have_monotonic; /* runtime */	254	static int default_loop;
86		255
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	256	#endif
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		257
91	/*****************************************************************************/	258	/*****************************************************************************/
92		259
93	ev_tstamp	260	ev_tstamp
94	ev_time (void)	261	ev_time (void)
…		…
102	gettimeofday (&tv, 0);	269	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	270	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	271	#endif
105	}	272	}
106		273
107	static ev_tstamp	274	inline ev_tstamp
108	get_clock (void)	275	get_clock (void)
109	{	276	{
110	#if EV_USE_MONOTONIC	277	#if EV_USE_MONOTONIC
111	if (have_monotonic)	278	if (expect_true (have_monotonic))
112	{	279	{
113	struct timespec ts;	280	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	281	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	282	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	283	}
117	#endif	284	#endif
118		285
119	return ev_time ();	286	return ev_time ();
120	}	287	}
121		288
		289	#if EV_MULTIPLICITY
		290	ev_tstamp
		291	ev_now (EV_P)
		292	{
		293	return ev_rt_now;
		294	}
		295	#endif
		296
122	#define array_roundsize(base,n) ((n) | 4 & ~3)	297	#define array_roundsize(type,n) ((n) | 4 & ~3)
123		298
124	#define array_needsize(base,cur,cnt,init) \	299	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	300	if (expect_false ((cnt) > cur)) \
126	{ \	301	{ \
127	int newcnt = cur; \	302	int newcnt = cur; \
128	do \	303	do \
129	{ \	304	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	305	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	306	} \
132	while ((cnt) > newcnt); \	307	while ((cnt) > newcnt); \
133	\	308	\
134	base = realloc (base, sizeof (*base) * (newcnt)); \	309	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
135	init (base + cur, newcnt - cur); \	310	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	311	cur = newcnt; \
137	}	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;
138		329
139	/*****************************************************************************/	330	/*****************************************************************************/
140
141	typedef struct
142	{
143	struct ev_io *head;
144	unsigned char events;
145	unsigned char reify;
146	} ANFD;
147
148	static ANFD *anfds;
149	static int anfdmax;
150		331
151	static void	332	static void
152	anfds_init (ANFD *base, int count)	333	anfds_init (ANFD *base, int count)
153	{	334	{
154	while (count--)	335	while (count--)
…		…
159		340
160	++base;	341	++base;
161	}	342	}
162	}	343	}
163		344
164	typedef struct	345	void
		346	ev_feed_event (EV_P_ void *w, int revents)
165	{	347	{
166	W w;	348	W w_ = (W)w;
167	int events;
168	} ANPENDING;
169		349
170	static ANPENDING *pendings;
171	static int pendingmax, pendingcnt;
172
173	static void
174	event (W w, int events)
175	{
176	if (w->pending)	350	if (w_->pending)
177	{	351	{
178	pendings [w->pending - 1].events |= events;	352	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
179	return;	353	return;
180	}	354	}
181		355
182	w->pending = ++pendingcnt;	356	w_->pending = ++pendingcnt [ABSPRI (w_)];
183	array_needsize (pendings, pendingmax, pendingcnt, );	357	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
184	pendings [pendingcnt - 1].w = w;	358	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
185	pendings [pendingcnt - 1].events = events;	359	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
186	}	360	}
187		361
188	static void	362	static void
189	queue_events (W *events, int eventcnt, int type)	363	queue_events (EV_P_ W *events, int eventcnt, int type)
190	{	364	{
191	int i;	365	int i;
192		366
193	for (i = 0; i < eventcnt; ++i)	367	for (i = 0; i < eventcnt; ++i)
194	event (events [i], type);	368	ev_feed_event (EV_A_ events [i], type);
195	}	369	}
196		370
197	static void	371	inline void
198	fd_event (int fd, int events)	372	fd_event (EV_P_ int fd, int revents)
199	{	373	{
200	ANFD *anfd = anfds + fd;	374	ANFD *anfd = anfds + fd;
201	struct ev_io *w;	375	struct ev_io *w;
202		376
203	for (w = anfd->head; w; w = w->next)	377	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
204	{	378	{
205	int ev = w->events & events;	379	int ev = w->events & revents;
206		380
207	if (ev)	381	if (ev)
208	event ((W)w, ev);	382	ev_feed_event (EV_A_ (W)w, ev);
209	}	383	}
		384	}
		385
		386	void
		387	ev_feed_fd_event (EV_P_ int fd, int revents)
		388	{
		389	fd_event (EV_A_ fd, revents);
210	}	390	}
211		391
212	/*****************************************************************************/	392	/*****************************************************************************/
213		393
214	static int *fdchanges;
215	static int fdchangemax, fdchangecnt;
216
217	static void	394	static void
218	fd_reify (void)	395	fd_reify (EV_P)
219	{	396	{
220	int i;	397	int i;
221		398
222	for (i = 0; i < fdchangecnt; ++i)	399	for (i = 0; i < fdchangecnt; ++i)
223	{	400	{
…		…
225	ANFD *anfd = anfds + fd;	402	ANFD *anfd = anfds + fd;
226	struct ev_io *w;	403	struct ev_io *w;
227		404
228	int events = 0;	405	int events = 0;
229		406
230	for (w = anfd->head; w; w = w->next)	407	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
231	events |= w->events;	408	events |= w->events;
232		409
233	anfd->reify = 0;	410	anfd->reify = 0;
234		411
235	if (anfd->events != events)
236	{
237	method_modify (fd, anfd->events, events);	412	method_modify (EV_A_ fd, anfd->events, events);
238	anfd->events = events;	413	anfd->events = events;
239	}
240	}	414	}
241		415
242	fdchangecnt = 0;	416	fdchangecnt = 0;
243	}	417	}
244		418
245	static void	419	static void
246	fd_change (int fd)	420	fd_change (EV_P_ int fd)
247	{	421	{
248	if (anfds [fd].reify || fdchangecnt < 0)	422	if (anfds [fd].reify)
249	return;	423	return;
250		424
251	anfds [fd].reify = 1;	425	anfds [fd].reify = 1;
252		426
253	++fdchangecnt;	427	++fdchangecnt;
254	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	428	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
255	fdchanges [fdchangecnt - 1] = fd;	429	fdchanges [fdchangecnt - 1] = fd;
256	}	430	}
257		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
		452	}
		453
258	/* called on EBADF to verify fds */	454	/* called on EBADF to verify fds */
259	static void	455	static void
260	fd_recheck (void)	456	fd_ebadf (EV_P)
261	{	457	{
262	int fd;	458	int fd;
263		459
264	for (fd = 0; fd < anfdmax; ++fd)	460	for (fd = 0; fd < anfdmax; ++fd)
265	if (anfds [fd].events)	461	if (anfds [fd].events)
266	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	462	if (!fd_valid (fd) == -1 && errno == EBADF)
267	while (anfds [fd].head)	463	fd_kill (EV_A_ fd);
		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)
268	{	474	{
269	ev_io_stop (anfds [fd].head);	475	fd_kill (EV_A_ fd);
270	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	476	return;
271	}	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	}
272	}	493	}
273		494
274	/*****************************************************************************/	495	/*****************************************************************************/
275		496
276	static struct ev_timer **timers;
277	static int timermax, timercnt;
278
279	static struct ev_periodic **periodics;
280	static int periodicmax, periodiccnt;
281
282	static void	497	static void
283	upheap (WT *timers, int k)	498	upheap (WT *heap, int k)
284	{	499	{
285	WT w = timers [k];	500	WT w = heap [k];
286		501
287	while (k && timers [k >> 1]->at > w->at)	502	while (k && heap [k >> 1]->at > w->at)
288	{	503	{
289	timers [k] = timers [k >> 1];	504	heap [k] = heap [k >> 1];
290	timers [k]->active = k + 1;	505	((W)heap [k])->active = k + 1;
291	k >>= 1;	506	k >>= 1;
292	}	507	}
293		508
294	timers [k] = w;	509	heap [k] = w;
295	timers [k]->active = k + 1;	510	((W)heap [k])->active = k + 1;
296		511
297	}	512	}
298		513
299	static void	514	static void
300	downheap (WT *timers, int N, int k)	515	downheap (WT *heap, int N, int k)
301	{	516	{
302	WT w = timers [k];	517	WT w = heap [k];
303		518
304	while (k < (N >> 1))	519	while (k < (N >> 1))
305	{	520	{
306	int j = k << 1;	521	int j = k << 1;
307		522
308	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	523	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
309	++j;	524	++j;
310		525
311	if (w->at <= timers [j]->at)	526	if (w->at <= heap [j]->at)
312	break;	527	break;
313		528
314	timers [k] = timers [j];	529	heap [k] = heap [j];
315	timers [k]->active = k + 1;	530	((W)heap [k])->active = k + 1;
316	k = j;	531	k = j;
317	}	532	}
318		533
319	timers [k] = w;	534	heap [k] = w;
320	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);
321	}	548	}
322		549
323	/*****************************************************************************/	550	/*****************************************************************************/
324		551
325	typedef struct	552	typedef struct
326	{	553	{
327	struct ev_signal *head;	554	WL head;
328	sig_atomic_t volatile gotsig;	555	sig_atomic_t volatile gotsig;
329	} ANSIG;	556	} ANSIG;
330		557
331	static ANSIG *signals;	558	static ANSIG *signals;
332	static int signalmax;	559	static int signalmax;
…		…
348	}	575	}
349		576
350	static void	577	static void
351	sighandler (int signum)	578	sighandler (int signum)
352	{	579	{
		580	#if WIN32
		581	signal (signum, sighandler);
		582	#endif
		583
353	signals [signum - 1].gotsig = 1;	584	signals [signum - 1].gotsig = 1;
354		585
355	if (!gotsig)	586	if (!gotsig)
356	{	587	{
		588	int old_errno = errno;
357	gotsig = 1;	589	gotsig = 1;
		590	#ifdef WIN32
		591	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		592	#else
358	write (sigpipe [1], &signum, 1);	593	write (sigpipe [1], &signum, 1);
		594	#endif
		595	errno = old_errno;
359	}	596	}
360	}	597	}
361		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
362	static void	619	static void
363	sigcb (struct ev_io *iow, int revents)	620	sigcb (EV_P_ struct ev_io *iow, int revents)
364	{	621	{
365	struct ev_signal *w;
366	int sig;	622	int signum;
367		623
		624	#ifdef WIN32
		625	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		626	#else
368	read (sigpipe [0], &revents, 1);	627	read (sigpipe [0], &revents, 1);
		628	#endif
369	gotsig = 0;	629	gotsig = 0;
370		630
371	for (sig = signalmax; sig--; )	631	for (signum = signalmax; signum--; )
372	if (signals [sig].gotsig)	632	if (signals [signum].gotsig)
373	{	633	ev_feed_signal_event (EV_A_ signum + 1);
374	signals [sig].gotsig = 0;
375
376	for (w = signals [sig].head; w; w = w->next)
377	event ((W)w, EV_SIGNAL);
378	}
379	}	634	}
380		635
381	static void	636	static void
382	siginit (void)	637	siginit (EV_P)
383	{	638	{
		639	#ifndef WIN32
384	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	640	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
385	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	641	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
386		642
387	/* rather than sort out wether we really need nb, set it */	643	/* rather than sort out wether we really need nb, set it */
388	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	644	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
389	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	645	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		646	#endif
390		647
391	ev_io_set (&sigev, sigpipe [0], EV_READ);	648	ev_io_set (&sigev, sigpipe [0], EV_READ);
392	ev_io_start (&sigev);	649	ev_io_start (EV_A_ &sigev);
		650	ev_unref (EV_A); /* child watcher should not keep loop alive */
393	}	651	}
394		652
395	/*****************************************************************************/	653	/*****************************************************************************/
396		654
397	static struct ev_idle **idles;
398	static int idlemax, idlecnt;
399
400	static struct ev_prepare **prepares;
401	static int preparemax, preparecnt;
402
403	static struct ev_check **checks;
404	static int checkmax, checkcnt;
405
406	/*****************************************************************************/
407
408	static struct ev_child *childs [PID_HASHSIZE];	655	static struct ev_child *childs [PID_HASHSIZE];
		656
		657	#ifndef WIN32
		658
409	static struct ev_signal childev;	659	static struct ev_signal childev;
410		660
411	#ifndef WCONTINUED	661	#ifndef WCONTINUED
412	# define WCONTINUED 0	662	# define WCONTINUED 0
413	#endif	663	#endif
414		664
415	static void	665	static void
416	childcb (struct ev_signal *sw, int revents)	666	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
417	{	667	{
418	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	{
419	int pid, status;	683	int pid, status;
420		684
421	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	685	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
422	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	686	{
423	if (w->pid == pid || w->pid == -1)	687	/* make sure we are called again until all childs have been reaped */
424	{	688	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
425	w->status = status;	689
426	event ((W)w, EV_CHILD);	690	child_reap (EV_A_ sw, pid, pid, status);
427	}	691	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		692	}
428	}	693	}
		694
		695	#endif
429		696
430	/*****************************************************************************/	697	/*****************************************************************************/
431		698
		699	#if EV_USE_KQUEUE
		700	# include "ev_kqueue.c"
		701	#endif
432	#if EV_USE_EPOLL	702	#if EV_USE_EPOLL
433	# include "ev_epoll.c"	703	# include "ev_epoll.c"
434	#endif	704	#endif
		705	#if EV_USE_POLL
		706	# include "ev_poll.c"
		707	#endif
435	#if EV_USE_SELECT	708	#if EV_USE_SELECT
436	# include "ev_select.c"	709	# include "ev_select.c"
437	#endif	710	#endif
438		711
439	int	712	int
…		…
446	ev_version_minor (void)	719	ev_version_minor (void)
447	{	720	{
448	return EV_VERSION_MINOR;	721	return EV_VERSION_MINOR;
449	}	722	}
450		723
451	int ev_init (int flags)	724	/* return true if we are running with elevated privileges and should ignore env variables */
		725	static int
		726	enable_secure (void)
452	{	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	{
453	if (!ev_method)	745	if (!method)
454	{	746	{
455	#if EV_USE_MONOTONIC	747	#if EV_USE_MONOTONIC
456	{	748	{
457	struct timespec ts;	749	struct timespec ts;
458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	750	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
459	have_monotonic = 1;	751	have_monotonic = 1;
460	}	752	}
461	#endif	753	#endif
462		754
463	ev_now = ev_time ();	755	ev_rt_now = ev_time ();
464	now = get_clock ();	756	mn_now = get_clock ();
		757	now_floor = mn_now;
465	diff = ev_now - now;	758	rtmn_diff = ev_rt_now - mn_now;
466		759
467	if (pipe (sigpipe))	760	if (methods == EVMETHOD_AUTO)
468	return 0;	761	if (!enable_secure () && getenv ("LIBEV_METHODS"))
469		762	methods = atoi (getenv ("LIBEV_METHODS"));
		763	else
470	ev_method = EVMETHOD_NONE;	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
471	#if EV_USE_EPOLL	773	#if EV_USE_EPOLL
472	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	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);
473	#endif	778	#endif
474	#if EV_USE_SELECT	779	#if EV_USE_SELECT
475	if (ev_method == EVMETHOD_NONE) select_init (flags);	780	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
476	#endif	781	#endif
477		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])
		892	if (pipe (sigpipe))
		893	return 0;
		894
		895	if (!default_loop)
		896	{
		897	#if EV_MULTIPLICITY
		898	struct ev_loop *loop = default_loop = &default_loop_struct;
		899	#else
		900	default_loop = 1;
		901	#endif
		902
		903	loop_init (EV_A_ methods);
		904
478	if (ev_method)	905	if (ev_method (EV_A))
479	{	906	{
480	ev_watcher_init (&sigev, sigcb);
481	siginit ();	907	siginit (EV_A);
482		908
		909	#ifndef WIN32
483	ev_signal_init (&childev, childcb, SIGCHLD);	910	ev_signal_init (&childev, childcb, SIGCHLD);
		911	ev_set_priority (&childev, EV_MAXPRI);
484	ev_signal_start (&childev);	912	ev_signal_start (EV_A_ &childev);
		913	ev_unref (EV_A); /* child watcher should not keep loop alive */
		914	#endif
485	}	915	}
		916	else
		917	default_loop = 0;
486	}	918	}
487		919
488	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;
489	}	953	}
490		954
491	/*****************************************************************************/	955	/*****************************************************************************/
492		956
493	void
494	ev_prefork (void)
495	{
496	/* nop */
497	}
498
499	void
500	ev_postfork_parent (void)
501	{
502	/* nop */
503	}
504
505	void
506	ev_postfork_child (void)
507	{
508	#if EV_USE_EPOLL
509	if (ev_method == EVMETHOD_EPOLL)
510	epoll_postfork_child ();
511	#endif
512
513	ev_io_stop (&sigev);
514	close (sigpipe [0]);
515	close (sigpipe [1]);
516	pipe (sigpipe);
517	siginit ();
518	}
519
520	/*****************************************************************************/
521
522	static void	957	static int
		958	any_pending (EV_P)
		959	{
		960	int pri;
		961
		962	for (pri = NUMPRI; pri--; )
		963	if (pendingcnt [pri])
		964	return 1;
		965
		966	return 0;
		967	}
		968
		969	static void
523	call_pending (void)	970	call_pending (EV_P)
524	{	971	{
		972	int pri;
		973
		974	for (pri = NUMPRI; pri--; )
525	while (pendingcnt)	975	while (pendingcnt [pri])
526	{	976	{
527	ANPENDING *p = pendings + --pendingcnt;	977	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
528		978
529	if (p->w)	979	if (p->w)
530	{	980	{
531	p->w->pending = 0;	981	p->w->pending = 0;
532	p->w->cb (p->w, p->events);	982	EV_CB_INVOKE (p->w, p->events);
533	}	983	}
534	}	984	}
535	}	985	}
536		986
537	static void	987	static void
538	timers_reify (void)	988	timers_reify (EV_P)
539	{	989	{
540	while (timercnt && timers [0]->at <= now)	990	while (timercnt && ((WT)timers [0])->at <= mn_now)
541	{	991	{
542	struct ev_timer *w = timers [0];	992	struct ev_timer *w = timers [0];
		993
		994	assert (("inactive timer on timer heap detected", ev_is_active (w)));
543		995
544	/* first reschedule or stop timer */	996	/* first reschedule or stop timer */
545	if (w->repeat)	997	if (w->repeat)
546	{	998	{
547	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	999	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1000
548	w->at = now + w->repeat;	1001	((WT)w)->at += w->repeat;
		1002	if (((WT)w)->at < mn_now)
		1003	((WT)w)->at = mn_now;
		1004
549	downheap ((WT *)timers, timercnt, 0);	1005	downheap ((WT *)timers, timercnt, 0);
550	}	1006	}
551	else	1007	else
552	ev_timer_stop (w); /* nonrepeating: stop timer */	1008	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
553		1009
554	event ((W)w, EV_TIMEOUT);	1010	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
555	}	1011	}
556	}	1012	}
557		1013
		1014	#if EV_PERIODICS
558	static void	1015	static void
559	periodics_reify (void)	1016	periodics_reify (EV_P)
560	{	1017	{
561	while (periodiccnt && periodics [0]->at <= ev_now)	1018	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
562	{	1019	{
563	struct ev_periodic *w = periodics [0];	1020	struct ev_periodic *w = periodics [0];
564		1021
		1022	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1023
565	/* first reschedule or stop timer */	1024	/* first reschedule or stop timer */
566	if (w->interval)	1025	if (w->reschedule_cb)
567	{	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	{
568	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;
569	assert (("ev_periodic timeout in the past detected while processing timers, 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));
570	downheap ((WT *)periodics, periodiccnt, 0);	1036	downheap ((WT *)periodics, periodiccnt, 0);
571	}	1037	}
572	else	1038	else
573	ev_periodic_stop (w); /* nonrepeating: stop timer */	1039	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
574		1040
575	event ((W)w, EV_PERIODIC);	1041	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
576	}	1042	}
577	}	1043	}
578		1044
579	static void	1045	static void
580	periodics_reschedule (ev_tstamp diff)	1046	periodics_reschedule (EV_P)
581	{	1047	{
582	int i;	1048	int i;
583		1049
584	/* adjust periodics after time jump */	1050	/* adjust periodics after time jump */
585	for (i = 0; i < periodiccnt; ++i)	1051	for (i = 0; i < periodiccnt; ++i)
586	{	1052	{
587	struct ev_periodic *w = periodics [i];	1053	struct ev_periodic *w = periodics [i];
588		1054
		1055	if (w->reschedule_cb)
		1056	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
589	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))
590	{	1094	{
591	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1095	ev_tstamp odiff = rtmn_diff;
592		1096
593	if (fabs (diff) >= 1e-4)	1097	for (i = 4; --i; ) /* loop a few times, before making important decisions */
594	{	1098	{
595	ev_periodic_stop (w);	1099	rtmn_diff = ev_rt_now - mn_now;
596	ev_periodic_start (w);
597		1100
598	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;
599	}	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) */
600	}	1114	}
601	}	1115	}
602	}	1116	else
603		1117	#endif
604	static void	1118	{
605	time_update (void)
606	{
607	int i;
608
609	ev_now = ev_time ();	1119	ev_rt_now = ev_time ();
610		1120
611	if (have_monotonic)	1121	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
612	{
613	ev_tstamp odiff = diff;
614
615	for (i = 4; --i; ) /* loop a few times, before making important decisions */
616	{	1122	{
617	now = get_clock ();	1123	#if EV_PERIODICS
618	diff = ev_now - now;
619
620	if (fabs (odiff - diff) < MIN_TIMEJUMP)
621	return; /* all is well */
622
623	ev_now = ev_time ();
624	}
625
626	periodics_reschedule (diff - odiff);
627	/* no timer adjustment, as the monotonic clock doesn't jump */
628	}
629	else
630	{
631	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
632	{
633	periodics_reschedule (ev_now - now);	1124	periodics_reschedule (EV_A);
		1125	#endif
634		1126
635	/* 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 */
636	for (i = 0; i < timercnt; ++i)	1128	for (i = 0; i < timercnt; ++i)
637	timers [i]->at += diff;	1129	((WT)timers [i])->at += ev_rt_now - mn_now;
638	}	1130	}
639		1131
640	now = ev_now;	1132	mn_now = ev_rt_now;
641	}	1133	}
642	}	1134	}
643		1135
644	int ev_loop_done;	1136	void
		1137	ev_ref (EV_P)
		1138	{
		1139	++activecnt;
		1140	}
645		1141
		1142	void
		1143	ev_unref (EV_P)
		1144	{
		1145	--activecnt;
		1146	}
		1147
		1148	static int loop_done;
		1149
		1150	void
646	void ev_loop (int flags)	1151	ev_loop (EV_P_ int flags)
647	{	1152	{
648	double block;	1153	double block;
649	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1154	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
650		1155
651	do	1156	do
652	{	1157	{
653	/* queue check watchers (and execute them) */	1158	/* queue check watchers (and execute them) */
654	if (preparecnt)	1159	if (expect_false (preparecnt))
655	{	1160	{
656	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1161	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
657	call_pending ();	1162	call_pending (EV_A);
658	}	1163	}
659		1164
		1165	/* we might have forked, so reify kernel state if necessary */
		1166	if (expect_false (postfork))
		1167	loop_fork (EV_A);
		1168
660	/* update fd-related kernel structures */	1169	/* update fd-related kernel structures */
661	fd_reify ();	1170	fd_reify (EV_A);
662		1171
663	/* calculate blocking time */	1172	/* calculate blocking time */
664		1173
665	/* 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
666	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	{
667	ev_now = ev_time ();	1182	ev_rt_now = ev_time ();
		1183	mn_now = ev_rt_now;
		1184	}
668		1185
669	if (flags & EVLOOP_NONBLOCK || idlecnt)	1186	if (flags & EVLOOP_NONBLOCK || idlecnt)
670	block = 0.;	1187	block = 0.;
671	else	1188	else
672	{	1189	{
673	block = MAX_BLOCKTIME;	1190	block = MAX_BLOCKTIME;
674		1191
675	if (timercnt)	1192	if (timercnt)
676	{	1193	{
677	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;
678	if (block > to) block = to;	1195	if (block > to) block = to;
679	}	1196	}
680		1197
		1198	#if EV_PERIODICS
681	if (periodiccnt)	1199	if (periodiccnt)
682	{	1200	{
683	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1201	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
684	if (block > to) block = to;	1202	if (block > to) block = to;
685	}	1203	}
		1204	#endif
686		1205
687	if (block < 0.) block = 0.;	1206	if (block < 0.) block = 0.;
688	}	1207	}
689		1208
690	method_poll (block);	1209	method_poll (EV_A_ block);
691		1210
692	/* update ev_now, do magic */	1211	/* update ev_rt_now, do magic */
693	time_update ();	1212	time_update (EV_A);
694		1213
695	/* queue pending timers and reschedule them */	1214	/* queue pending timers and reschedule them */
696	timers_reify (); /* relative timers called last */	1215	timers_reify (EV_A); /* relative timers called last */
		1216	#if EV_PERIODICS
697	periodics_reify (); /* absolute timers called first */	1217	periodics_reify (EV_A); /* absolute timers called first */
		1218	#endif
698		1219
699	/* queue idle watchers unless io or timers are pending */	1220	/* queue idle watchers unless io or timers are pending */
700	if (!pendingcnt)	1221	if (idlecnt && !any_pending (EV_A))
701	queue_events ((W *)idles, idlecnt, EV_IDLE);	1222	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
702		1223
703	/* queue check watchers, to be executed first */	1224	/* queue check watchers, to be executed first */
704	if (checkcnt)	1225	if (checkcnt)
705	queue_events ((W *)checks, checkcnt, EV_CHECK);	1226	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
706		1227
707	call_pending ();	1228	call_pending (EV_A);
708	}	1229	}
709	while (!ev_loop_done);	1230	while (activecnt && !loop_done);
710		1231
711	if (ev_loop_done != 2)	1232	if (loop_done != 2)
712	ev_loop_done = 0;	1233	loop_done = 0;
		1234	}
		1235
		1236	void
		1237	ev_unloop (EV_P_ int how)
		1238	{
		1239	loop_done = how;
713	}	1240	}
714		1241
715	/*****************************************************************************/	1242	/*****************************************************************************/
716		1243
717	static void	1244	inline void
718	wlist_add (WL *head, WL elem)	1245	wlist_add (WL *head, WL elem)
719	{	1246	{
720	elem->next = *head;	1247	elem->next = *head;
721	*head = elem;	1248	*head = elem;
722	}	1249	}
723		1250
724	static void	1251	inline void
725	wlist_del (WL *head, WL elem)	1252	wlist_del (WL *head, WL elem)
726	{	1253	{
727	while (*head)	1254	while (*head)
728	{	1255	{
729	if (*head == elem)	1256	if (*head == elem)
…		…
734		1261
735	head = &(*head)->next;	1262	head = &(*head)->next;
736	}	1263	}
737	}	1264	}
738		1265
739	static void	1266	inline void
740	ev_clear_pending (W w)	1267	ev_clear_pending (EV_P_ W w)
741	{	1268	{
742	if (w->pending)	1269	if (w->pending)
743	{	1270	{
744	pendings [w->pending - 1].w = 0;	1271	pendings [ABSPRI (w)][w->pending - 1].w = 0;
745	w->pending = 0;	1272	w->pending = 0;
746	}	1273	}
747	}	1274	}
748		1275
749	static void	1276	inline void
750	ev_start (W w, int active)	1277	ev_start (EV_P_ W w, int active)
751	{	1278	{
		1279	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1280	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1281
752	w->active = active;	1282	w->active = active;
		1283	ev_ref (EV_A);
753	}	1284	}
754		1285
755	static void	1286	inline void
756	ev_stop (W w)	1287	ev_stop (EV_P_ W w)
757	{	1288	{
		1289	ev_unref (EV_A);
758	w->active = 0;	1290	w->active = 0;
759	}	1291	}
760		1292
761	/*****************************************************************************/	1293	/*****************************************************************************/
762		1294
763	void	1295	void
764	ev_io_start (struct ev_io *w)	1296	ev_io_start (EV_P_ struct ev_io *w)
765	{	1297	{
		1298	int fd = w->fd;
		1299
766	if (ev_is_active (w))	1300	if (ev_is_active (w))
767	return;	1301	return;
768		1302
769	int fd = w->fd;
770
771	assert (("ev_io_start called with negative fd", fd >= 0));	1303	assert (("ev_io_start called with negative fd", fd >= 0));
772		1304
773	ev_start ((W)w, 1);	1305	ev_start (EV_A_ (W)w, 1);
774	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1306	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
775	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1307	wlist_add ((WL *)&anfds[fd].head, (WL)w);
776		1308
777	fd_change (fd);	1309	fd_change (EV_A_ fd);
778	}	1310	}
779		1311
780	void	1312	void
781	ev_io_stop (struct ev_io *w)	1313	ev_io_stop (EV_P_ struct ev_io *w)
782	{	1314	{
783	ev_clear_pending ((W)w);	1315	ev_clear_pending (EV_A_ (W)w);
784	if (!ev_is_active (w))	1316	if (!ev_is_active (w))
785	return;	1317	return;
786		1318
		1319	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1320
787	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1321	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
788	ev_stop ((W)w);	1322	ev_stop (EV_A_ (W)w);
789		1323
790	fd_change (w->fd);	1324	fd_change (EV_A_ w->fd);
791	}	1325	}
792		1326
793	void	1327	void
794	ev_timer_start (struct ev_timer *w)	1328	ev_timer_start (EV_P_ struct ev_timer *w)
795	{	1329	{
796	if (ev_is_active (w))	1330	if (ev_is_active (w))
797	return;	1331	return;
798		1332
799	w->at += now;	1333	((WT)w)->at += mn_now;
800		1334
801	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1335	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
802		1336
803	ev_start ((W)w, ++timercnt);	1337	ev_start (EV_A_ (W)w, ++timercnt);
804	array_needsize (timers, timermax, timercnt, );	1338	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
805	timers [timercnt - 1] = w;	1339	timers [timercnt - 1] = w;
806	upheap ((WT *)timers, timercnt - 1);	1340	upheap ((WT *)timers, timercnt - 1);
807	}
808		1341
		1342	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1343	}
		1344
809	void	1345	void
810	ev_timer_stop (struct ev_timer *w)	1346	ev_timer_stop (EV_P_ struct ev_timer *w)
811	{	1347	{
812	ev_clear_pending ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
813	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
814	return;	1350	return;
815		1351
		1352	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1353
816	if (w->active < timercnt--)	1354	if (((W)w)->active < timercnt--)
817	{	1355	{
818	timers [w->active - 1] = timers [timercnt];	1356	timers [((W)w)->active - 1] = timers [timercnt];
819	downheap ((WT *)timers, timercnt, w->active - 1);	1357	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
820	}	1358	}
821		1359
822	w->at = w->repeat;	1360	((WT)w)->at -= mn_now;
823		1361
824	ev_stop ((W)w);	1362	ev_stop (EV_A_ (W)w);
825	}	1363	}
826		1364
827	void	1365	void
828	ev_timer_again (struct ev_timer *w)	1366	ev_timer_again (EV_P_ struct ev_timer *w)
829	{	1367	{
830	if (ev_is_active (w))	1368	if (ev_is_active (w))
831	{	1369	{
832	if (w->repeat)	1370	if (w->repeat)
833	{
834	w->at = now + w->repeat;
835	downheap ((WT *)timers, timercnt, w->active - 1);	1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
836	}
837	else	1372	else
838	ev_timer_stop (w);	1373	ev_timer_stop (EV_A_ w);
839	}	1374	}
840	else if (w->repeat)	1375	else if (w->repeat)
841	ev_timer_start (w);	1376	ev_timer_start (EV_A_ w);
842	}	1377	}
843		1378
		1379	#if EV_PERIODICS
844	void	1380	void
845	ev_periodic_start (struct ev_periodic *w)	1381	ev_periodic_start (EV_P_ struct ev_periodic *w)
846	{	1382	{
847	if (ev_is_active (w))	1383	if (ev_is_active (w))
848	return;	1384	return;
849		1385
		1386	if (w->reschedule_cb)
		1387	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1388	else if (w->interval)
		1389	{
850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1390	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
851
852	/* 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 */
853	if (w->interval)
854	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	}
855		1394
856	ev_start ((W)w, ++periodiccnt);	1395	ev_start (EV_A_ (W)w, ++periodiccnt);
857	array_needsize (periodics, periodicmax, periodiccnt, );	1396	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
858	periodics [periodiccnt - 1] = w;	1397	periodics [periodiccnt - 1] = w;
859	upheap ((WT *)periodics, periodiccnt - 1);	1398	upheap ((WT *)periodics, periodiccnt - 1);
860	}
861		1399
		1400	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1401	}
		1402
862	void	1403	void
863	ev_periodic_stop (struct ev_periodic *w)	1404	ev_periodic_stop (EV_P_ struct ev_periodic *w)
864	{	1405	{
865	ev_clear_pending ((W)w);	1406	ev_clear_pending (EV_A_ (W)w);
866	if (!ev_is_active (w))	1407	if (!ev_is_active (w))
867	return;	1408	return;
868		1409
		1410	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1411
869	if (w->active < periodiccnt--)	1412	if (((W)w)->active < periodiccnt--)
870	{	1413	{
871	periodics [w->active - 1] = periodics [periodiccnt];	1414	periodics [((W)w)->active - 1] = periodics [periodiccnt];
872	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1415	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
873	}	1416	}
874		1417
875	ev_stop ((W)w);	1418	ev_stop (EV_A_ (W)w);
876	}	1419	}
877		1420
878	void	1421	void
		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
879	ev_signal_start (struct ev_signal *w)	1431	ev_idle_start (EV_P_ struct ev_idle *w)
880	{	1432	{
881	if (ev_is_active (w))	1433	if (ev_is_active (w))
882	return;	1434	return;
883		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
884	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1509	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
885		1510
886	ev_start ((W)w, 1);	1511	ev_start (EV_A_ (W)w, 1);
887	array_needsize (signals, signalmax, w->signum, signals_init);	1512	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
888	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1513	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
889		1514
890	if (!w->next)	1515	if (!((WL)w)->next)
891	{	1516	{
		1517	#if WIN32
		1518	signal (w->signum, sighandler);
		1519	#else
892	struct sigaction sa;	1520	struct sigaction sa;
893	sa.sa_handler = sighandler;	1521	sa.sa_handler = sighandler;
894	sigfillset (&sa.sa_mask);	1522	sigfillset (&sa.sa_mask);
895	sa.sa_flags = 0;	1523	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
896	sigaction (w->signum, &sa, 0);	1524	sigaction (w->signum, &sa, 0);
		1525	#endif
897	}	1526	}
898	}	1527	}
899		1528
900	void	1529	void
901	ev_signal_stop (struct ev_signal *w)	1530	ev_signal_stop (EV_P_ struct ev_signal *w)
902	{	1531	{
903	ev_clear_pending ((W)w);	1532	ev_clear_pending (EV_A_ (W)w);
904	if (!ev_is_active (w))	1533	if (!ev_is_active (w))
905	return;	1534	return;
906		1535
907	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1536	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
908	ev_stop ((W)w);	1537	ev_stop (EV_A_ (W)w);
909		1538
910	if (!signals [w->signum - 1].head)	1539	if (!signals [w->signum - 1].head)
911	signal (w->signum, SIG_DFL);	1540	signal (w->signum, SIG_DFL);
912	}	1541	}
913		1542
914	void	1543	void
915	ev_idle_start (struct ev_idle *w)	1544	ev_child_start (EV_P_ struct ev_child *w)
916	{	1545	{
		1546	#if EV_MULTIPLICITY
		1547	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1548	#endif
917	if (ev_is_active (w))	1549	if (ev_is_active (w))
918	return;	1550	return;
919		1551
920	ev_start ((W)w, ++idlecnt);
921	array_needsize (idles, idlemax, idlecnt, );
922	idles [idlecnt - 1] = w;
923	}
924
925	void
926	ev_idle_stop (struct ev_idle *w)
927	{
928	ev_clear_pending ((W)w);
929	if (ev_is_active (w))
930	return;
931
932	idles [w->active - 1] = idles [--idlecnt];
933	ev_stop ((W)w);
934	}
935
936	void
937	ev_prepare_start (struct ev_prepare *w)
938	{
939	if (ev_is_active (w))
940	return;
941
942	ev_start ((W)w, ++preparecnt);
943	array_needsize (prepares, preparemax, preparecnt, );
944	prepares [preparecnt - 1] = w;
945	}
946
947	void
948	ev_prepare_stop (struct ev_prepare *w)
949	{
950	ev_clear_pending ((W)w);
951	if (ev_is_active (w))
952	return;
953
954	prepares [w->active - 1] = prepares [--preparecnt];
955	ev_stop ((W)w);
956	}
957
958	void
959	ev_check_start (struct ev_check *w)
960	{
961	if (ev_is_active (w))
962	return;
963
964	ev_start ((W)w, ++checkcnt);
965	array_needsize (checks, checkmax, checkcnt, );
966	checks [checkcnt - 1] = w;
967	}
968
969	void
970	ev_check_stop (struct ev_check *w)
971	{
972	ev_clear_pending ((W)w);
973	if (ev_is_active (w))
974	return;
975
976	checks [w->active - 1] = checks [--checkcnt];
977	ev_stop ((W)w);
978	}
979
980	void
981	ev_child_start (struct ev_child *w)
982	{
983	if (ev_is_active (w))
984	return;
985
986	ev_start ((W)w, 1);	1552	ev_start (EV_A_ (W)w, 1);
987	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1553	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
988	}	1554	}
989		1555
990	void	1556	void
991	ev_child_stop (struct ev_child *w)	1557	ev_child_stop (EV_P_ struct ev_child *w)
992	{	1558	{
993	ev_clear_pending ((W)w);	1559	ev_clear_pending (EV_A_ (W)w);
994	if (ev_is_active (w))	1560	if (!ev_is_active (w))
995	return;	1561	return;
996		1562
997	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1563	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
998	ev_stop ((W)w);	1564	ev_stop (EV_A_ (W)w);
999	}	1565	}
1000		1566
1001	/*****************************************************************************/	1567	/*****************************************************************************/
1002		1568
1003	struct ev_once	1569	struct ev_once
…		…
1007	void (*cb)(int revents, void *arg);	1573	void (*cb)(int revents, void *arg);
1008	void *arg;	1574	void *arg;
1009	};	1575	};
1010		1576
1011	static void	1577	static void
1012	once_cb (struct ev_once *once, int revents)	1578	once_cb (EV_P_ struct ev_once *once, int revents)
1013	{	1579	{
1014	void (*cb)(int revents, void *arg) = once->cb;	1580	void (*cb)(int revents, void *arg) = once->cb;
1015	void *arg = once->arg;	1581	void *arg = once->arg;
1016		1582
1017	ev_io_stop (&once->io);	1583	ev_io_stop (EV_A_ &once->io);
1018	ev_timer_stop (&once->to);	1584	ev_timer_stop (EV_A_ &once->to);
1019	free (once);	1585	ev_free (once);
1020		1586
1021	cb (revents, arg);	1587	cb (revents, arg);
1022	}	1588	}
1023		1589
1024	static void	1590	static void
1025	once_cb_io (struct ev_io *w, int revents)	1591	once_cb_io (EV_P_ struct ev_io *w, int revents)
1026	{	1592	{
1027	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);
1028	}	1594	}
1029		1595
1030	static void	1596	static void
1031	once_cb_to (struct ev_timer *w, int revents)	1597	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1032	{	1598	{
1033	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);
1034	}	1600	}
1035		1601
1036	void	1602	void
1037	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)
1038	{	1604	{
1039	struct ev_once *once = malloc (sizeof (struct ev_once));	1605	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1040		1606
1041	if (!once)	1607	if (!once)
1042	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1608	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1043	else	1609	else
1044	{	1610	{
1045	once->cb = cb;	1611	once->cb = cb;
1046	once->arg = arg;	1612	once->arg = arg;
1047		1613
1048	ev_watcher_init (&once->io, once_cb_io);	1614	ev_init (&once->io, once_cb_io);
1049	if (fd >= 0)	1615	if (fd >= 0)
1050	{	1616	{
1051	ev_io_set (&once->io, fd, events);	1617	ev_io_set (&once->io, fd, events);
1052	ev_io_start (&once->io);	1618	ev_io_start (EV_A_ &once->io);
1053	}	1619	}
1054		1620
1055	ev_watcher_init (&once->to, once_cb_to);	1621	ev_init (&once->to, once_cb_to);
1056	if (timeout >= 0.)	1622	if (timeout >= 0.)
1057	{	1623	{
1058	ev_timer_set (&once->to, timeout, 0.);	1624	ev_timer_set (&once->to, timeout, 0.);
1059	ev_timer_start (&once->to);	1625	ev_timer_start (EV_A_ &once->to);
1060	}	1626	}
1061	}	1627	}
1062	}	1628	}
1063		1629
1064	/*****************************************************************************/	1630	#ifdef __cplusplus
1065
1066	#if 0
1067
1068	struct ev_io wio;
1069
1070	static void
1071	sin_cb (struct ev_io *w, int revents)
1072	{
1073	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1074	}	1631	}
1075
1076	static void
1077	ocb (struct ev_timer *w, int revents)
1078	{
1079	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1080	ev_timer_stop (w);
1081	ev_timer_start (w);
1082	}
1083
1084	static void
1085	scb (struct ev_signal *w, int revents)
1086	{
1087	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1088	ev_io_stop (&wio);
1089	ev_io_start (&wio);
1090	}
1091
1092	static void
1093	gcb (struct ev_signal *w, int revents)
1094	{
1095	fprintf (stderr, "generic %x\n", revents);
1096
1097	}
1098
1099	int main (void)
1100	{
1101	ev_init (0);
1102
1103	ev_io_init (&wio, sin_cb, 0, EV_READ);
1104	ev_io_start (&wio);
1105
1106	struct ev_timer t[10000];
1107
1108	#if 0
1109	int i;
1110	for (i = 0; i < 10000; ++i)
1111	{
1112	struct ev_timer *w = t + i;
1113	ev_watcher_init (w, ocb, i);
1114	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1115	ev_timer_start (w);
1116	if (drand48 () < 0.5)
1117	ev_timer_stop (w);
1118	}
1119	#endif	1632	#endif
1120		1633
1121	struct ev_timer t1;
1122	ev_timer_init (&t1, ocb, 5, 10);
1123	ev_timer_start (&t1);
1124
1125	struct ev_signal sig;
1126	ev_signal_init (&sig, scb, SIGQUIT);
1127	ev_signal_start (&sig);
1128
1129	struct ev_check cw;
1130	ev_check_init (&cw, gcb);
1131	ev_check_start (&cw);
1132
1133	struct ev_idle iw;
1134	ev_idle_init (&iw, gcb);
1135	ev_idle_start (&iw);
1136
1137	ev_loop (0);
1138
1139	return 0;
1140	}
1141
1142	#endif
1143
1144
1145
1146

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