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

Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.101 by root, Sun Nov 11 04:04:23 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 ev_rt_now ((loop)->ev_rt_now)
		239	#define VAR(name,decl) decl;
		240	#include "ev_vars.h"
		241	#undef VAR
		242	};
		243	#include "ev_wrap.h"
		244
		245	struct ev_loop default_loop_struct;
		246	static struct ev_loop *default_loop;
		247
		248	#else
		249
82	ev_tstamp ev_now;	250	ev_tstamp ev_rt_now;
83	int ev_method;	251	#define VAR(name,decl) static decl;
		252	#include "ev_vars.h"
		253	#undef VAR
84		254
85	static int have_monotonic; /* runtime */	255	static int default_loop;
86		256
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	257	#endif
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		258
91	/*****************************************************************************/	259	/*****************************************************************************/
92		260
93	ev_tstamp	261	ev_tstamp
94	ev_time (void)	262	ev_time (void)
…		…
102	gettimeofday (&tv, 0);	270	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	271	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	272	#endif
105	}	273	}
106		274
107	static ev_tstamp	275	inline ev_tstamp
108	get_clock (void)	276	get_clock (void)
109	{	277	{
110	#if EV_USE_MONOTONIC	278	#if EV_USE_MONOTONIC
111	if (have_monotonic)	279	if (expect_true (have_monotonic))
112	{	280	{
113	struct timespec ts;	281	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	282	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	283	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	284	}
117	#endif	285	#endif
118		286
119	return ev_time ();	287	return ev_time ();
120	}	288	}
121		289
		290	#if EV_MULTIPLICITY
		291	ev_tstamp
		292	ev_now (EV_P)
		293	{
		294	return ev_rt_now;
		295	}
		296	#endif
		297
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	298	#define array_roundsize(type,n) ((n) \| 4 & ~3)
123		299
124	#define array_needsize(base,cur,cnt,init) \	300	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	301	if (expect_false ((cnt) > cur)) \
126	{ \	302	{ \
127	int newcnt = cur; \	303	int newcnt = cur; \
128	do \	304	do \
129	{ \	305	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	306	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	307	} \
132	while ((cnt) > newcnt); \	308	while ((cnt) > newcnt); \
133	\	309	\
134	base = realloc (base, sizeof (base) (newcnt)); \	310	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	311	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	312	cur = newcnt; \
137	}	313	}
		314
		315	#define array_slim(type,stem) \
		316	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		317	{ \
		318	stem ## max = array_roundsize (stem ## cnt >> 1); \
		319	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		320	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		321	}
		322
		323	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		324	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		325	#define array_free_microshit(stem) \
		326	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		327
		328	#define array_free(stem, idx) \
		329	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		330
139	/*****************************************************************************/	331	/*****************************************************************************/
140
141	typedef struct
142	{
143	struct ev_io *head;
144	int events;
145	} ANFD;
146
147	static ANFD *anfds;
148	static int anfdmax;
149		332
150	static void	333	static void
151	anfds_init (ANFD *base, int count)	334	anfds_init (ANFD *base, int count)
152	{	335	{
153	while (count--)	336	while (count--)
154	{	337	{
155	base->head = 0;	338	base->head = 0;
156	base->events = EV_NONE;	339	base->events = EV_NONE;
		340	base->reify = 0;
		341
157	++base;	342	++base;
158	}	343	}
159	}	344	}
160		345
161	typedef struct	346	void
		347	ev_feed_event (EV_P_ void *w, int revents)
162	{	348	{
163	W w;	349	W w_ = (W)w;
164	int events;
165	} ANPENDING;
166		350
167	static ANPENDING *pendings;	351	if (w_->pending)
168	static int pendingmax, pendingcnt;	352	{
		353	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		354	return;
		355	}
169		356
170	static void
171	event (W w, int events)
172	{
173	w->pending = ++pendingcnt;	357	w_->pending = ++pendingcnt [ABSPRI (w_)];
174	array_needsize (pendings, pendingmax, pendingcnt, );	358	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
175	pendings [pendingcnt - 1].w = w;	359	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
176	pendings [pendingcnt - 1].events = events;	360	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
177	}	361	}
178		362
179	static void	363	static void
180	queue_events (W *events, int eventcnt, int type)	364	queue_events (EV_P_ W *events, int eventcnt, int type)
181	{	365	{
182	int i;	366	int i;
183		367
184	for (i = 0; i < eventcnt; ++i)	368	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);	369	ev_feed_event (EV_A_ events [i], type);
186	}	370	}
187		371
188	static void	372	inline void
189	fd_event (int fd, int events)	373	fd_event (EV_P_ int fd, int revents)
190	{	374	{
191	ANFD *anfd = anfds + fd;	375	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	376	struct ev_io *w;
193		377
194	for (w = anfd->head; w; w = w->next)	378	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
195	{	379	{
196	int ev = w->events & events;	380	int ev = w->events & revents;
197		381
198	if (ev)	382	if (ev)
199	event ((W)w, ev);	383	ev_feed_event (EV_A_ (W)w, ev);
200	}	384	}
		385	}
		386
		387	void
		388	ev_feed_fd_event (EV_P_ int fd, int revents)
		389	{
		390	fd_event (EV_A_ fd, revents);
201	}	391	}
202		392
203	/*****************************************************************************/	393	/*****************************************************************************/
204		394
205	static int *fdchanges;
206	static int fdchangemax, fdchangecnt;
207
208	static void	395	static void
209	fd_reify (void)	396	fd_reify (EV_P)
210	{	397	{
211	int i;	398	int i;
212		399
213	for (i = 0; i < fdchangecnt; ++i)	400	for (i = 0; i < fdchangecnt; ++i)
214	{	401	{
…		…
216	ANFD *anfd = anfds + fd;	403	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	404	struct ev_io *w;
218		405
219	int events = 0;	406	int events = 0;
220		407
221	for (w = anfd->head; w; w = w->next)	408	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
222	events \|= w->events;	409	events \|= w->events;
223		410
224	anfd->events &= ~EV_REIFY;	411	anfd->reify = 0;
225		412
226	if (anfd->events != events)
227	{
228	method_modify (fd, anfd->events, events);	413	method_modify (EV_A_ fd, anfd->events, events);
229	anfd->events = events;	414	anfd->events = events;
230	}
231	}	415	}
232		416
233	fdchangecnt = 0;	417	fdchangecnt = 0;
234	}	418	}
235		419
236	static void	420	static void
237	fd_change (int fd)	421	fd_change (EV_P_ int fd)
238	{	422	{
239	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	423	if (anfds [fd].reify)
240	return;	424	return;
241		425
242	anfds [fd].events \|= EV_REIFY;	426	anfds [fd].reify = 1;
243		427
244	++fdchangecnt;	428	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	429	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
246	fdchanges [fdchangecnt - 1] = fd;	430	fdchanges [fdchangecnt - 1] = fd;
247	}	431	}
248		432
		433	static void
		434	fd_kill (EV_P_ int fd)
		435	{
		436	struct ev_io *w;
		437
		438	while ((w = (struct ev_io *)anfds [fd].head))
		439	{
		440	ev_io_stop (EV_A_ w);
		441	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		442	}
		443	}
		444
		445	static int
		446	fd_valid (int fd)
		447	{
		448	#ifdef WIN32
		449	return !!win32_get_osfhandle (fd);
		450	#else
		451	return fcntl (fd, F_GETFD) != -1;
		452	#endif
		453	}
		454
249	/* called on EBADF to verify fds */	455	/* called on EBADF to verify fds */
250	static void	456	static void
251	fd_recheck (void)	457	fd_ebadf (EV_P)
252	{	458	{
253	int fd;	459	int fd;
254		460
255	for (fd = 0; fd < anfdmax; ++fd)	461	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	462	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	463	if (!fd_valid (fd) == -1 && errno == EBADF)
258	while (anfds [fd].head)	464	fd_kill (EV_A_ fd);
		465	}
		466
		467	/* called on ENOMEM in select/poll to kill some fds and retry */
		468	static void
		469	fd_enomem (EV_P)
		470	{
		471	int fd;
		472
		473	for (fd = anfdmax; fd--; )
		474	if (anfds [fd].events)
259	{	475	{
260	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	476	fd_kill (EV_A_ fd);
261	ev_io_stop (anfds [fd].head);	477	return;
262	}	478	}
		479	}
		480
		481	/* usually called after fork if method needs to re-arm all fds from scratch */
		482	static void
		483	fd_rearm_all (EV_P)
		484	{
		485	int fd;
		486
		487	/* this should be highly optimised to not do anything but set a flag */
		488	for (fd = 0; fd < anfdmax; ++fd)
		489	if (anfds [fd].events)
		490	{
		491	anfds [fd].events = 0;
		492	fd_change (EV_A_ fd);
		493	}
263	}	494	}
264		495
265	/*****************************************************************************/	496	/*****************************************************************************/
266		497
267	static struct ev_timer **timers;
268	static int timermax, timercnt;
269
270	static struct ev_periodic **periodics;
271	static int periodicmax, periodiccnt;
272
273	static void	498	static void
274	upheap (WT *timers, int k)	499	upheap (WT *heap, int k)
275	{	500	{
276	WT w = timers [k];	501	WT w = heap [k];
277		502
278	while (k && timers [k >> 1]->at > w->at)	503	while (k && heap [k >> 1]->at > w->at)
279	{	504	{
280	timers [k] = timers [k >> 1];	505	heap [k] = heap [k >> 1];
281	timers [k]->active = k + 1;	506	((W)heap [k])->active = k + 1;
282	k >>= 1;	507	k >>= 1;
283	}	508	}
284		509
285	timers [k] = w;	510	heap [k] = w;
286	timers [k]->active = k + 1;	511	((W)heap [k])->active = k + 1;
287		512
288	}	513	}
289		514
290	static void	515	static void
291	downheap (WT *timers, int N, int k)	516	downheap (WT *heap, int N, int k)
292	{	517	{
293	WT w = timers [k];	518	WT w = heap [k];
294		519
295	while (k < (N >> 1))	520	while (k < (N >> 1))
296	{	521	{
297	int j = k << 1;	522	int j = k << 1;
298		523
299	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	524	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
300	++j;	525	++j;
301		526
302	if (w->at <= timers [j]->at)	527	if (w->at <= heap [j]->at)
303	break;	528	break;
304		529
305	timers [k] = timers [j];	530	heap [k] = heap [j];
306	timers [k]->active = k + 1;	531	((W)heap [k])->active = k + 1;
307	k = j;	532	k = j;
308	}	533	}
309		534
310	timers [k] = w;	535	heap [k] = w;
311	timers [k]->active = k + 1;	536	((W)heap [k])->active = k + 1;
		537	}
		538
		539	inline void
		540	adjustheap (WT *heap, int N, int k)
		541	{
		542	upheap (heap, k);
		543	downheap (heap, N, k);
312	}	544	}
313		545
314	/*****************************************************************************/	546	/*****************************************************************************/
315		547
316	typedef struct	548	typedef struct
317	{	549	{
318	struct ev_signal *head;	550	WL head;
319	sig_atomic_t gotsig;	551	sig_atomic_t volatile gotsig;
320	} ANSIG;	552	} ANSIG;
321		553
322	static ANSIG *signals;	554	static ANSIG *signals;
323	static int signalmax;	555	static int signalmax;
324		556
325	static int sigpipe [2];	557	static int sigpipe [2];
326	static sig_atomic_t gotsig;	558	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;	559	static struct ev_io sigev;
328		560
329	static void	561	static void
330	signals_init (ANSIG *base, int count)	562	signals_init (ANSIG *base, int count)
331	{	563	{
332	while (count--)	564	while (count--)
333	{	565	{
334	base->head = 0;	566	base->head = 0;
335	base->gotsig = 0;	567	base->gotsig = 0;
		568
336	++base;	569	++base;
337	}	570	}
338	}	571	}
339		572
340	static void	573	static void
341	sighandler (int signum)	574	sighandler (int signum)
342	{	575	{
		576	#if WIN32
		577	signal (signum, sighandler);
		578	#endif
		579
343	signals [signum - 1].gotsig = 1;	580	signals [signum - 1].gotsig = 1;
344		581
345	if (!gotsig)	582	if (!gotsig)
346	{	583	{
		584	int old_errno = errno;
347	gotsig = 1;	585	gotsig = 1;
		586	#ifdef WIN32
		587	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		588	#else
348	write (sigpipe [1], &gotsig, 1);	589	write (sigpipe [1], &signum, 1);
		590	#endif
		591	errno = old_errno;
349	}	592	}
350	}	593	}
351		594
		595	void
		596	ev_feed_signal_event (EV_P_ int signum)
		597	{
		598	WL w;
		599
		600	#if EV_MULTIPLICITY
		601	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		602	#endif
		603
		604	--signum;
		605
		606	if (signum < 0 \|\| signum >= signalmax)
		607	return;
		608
		609	signals [signum].gotsig = 0;
		610
		611	for (w = signals [signum].head; w; w = w->next)
		612	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		613	}
		614
352	static void	615	static void
353	sigcb (struct ev_io *iow, int revents)	616	sigcb (EV_P_ struct ev_io *iow, int revents)
354	{	617	{
355	struct ev_signal *w;
356	int sig;	618	int signum;
357		619
		620	#ifdef WIN32
		621	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		622	#else
		623	read (sigpipe [0], &revents, 1);
		624	#endif
358	gotsig = 0;	625	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		626
361	for (sig = signalmax; sig--; )	627	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	628	if (signals [signum].gotsig)
363	{	629	ev_feed_signal_event (EV_A_ signum + 1);
364	signals [sig].gotsig = 0;
365
366	for (w = signals [sig].head; w; w = w->next)
367	event ((W)w, EV_SIGNAL);
368	}
369	}	630	}
370		631
371	static void	632	static void
372	siginit (void)	633	siginit (EV_P)
373	{	634	{
		635	#ifndef WIN32
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	636	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	637	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376		638
377	/* rather than sort out wether we really need nb, set it */	639	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	640	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	641	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		642	#endif
380		643
381	ev_io_set (&sigev, sigpipe [0], EV_READ);	644	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);	645	ev_io_start (EV_A_ &sigev);
		646	ev_unref (EV_A); /* child watcher should not keep loop alive */
383	}	647	}
384		648
385	/*****************************************************************************/	649	/*****************************************************************************/
386		650
387	static struct ev_idle **idles;
388	static int idlemax, idlecnt;
389
390	static struct ev_prepare **prepares;
391	static int preparemax, preparecnt;
392
393	static struct ev_check **checks;
394	static int checkmax, checkcnt;
395
396	/*****************************************************************************/
397
398	static struct ev_child *childs [PID_HASHSIZE];	651	static struct ev_child *childs [PID_HASHSIZE];
		652
		653	#ifndef WIN32
		654
399	static struct ev_signal childev;	655	static struct ev_signal childev;
400		656
401	#ifndef WCONTINUED	657	#ifndef WCONTINUED
402	# define WCONTINUED 0	658	# define WCONTINUED 0
403	#endif	659	#endif
404		660
405	static void	661	static void
406	childcb (struct ev_signal *sw, int revents)	662	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
407	{	663	{
408	struct ev_child *w;	664	struct ev_child *w;
		665
		666	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		667	if (w->pid == pid \|\| !w->pid)
		668	{
		669	ev_priority (w) = ev_priority (sw); /* need to do it now */
		670	w->rpid = pid;
		671	w->rstatus = status;
		672	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		673	}
		674	}
		675
		676	static void
		677	childcb (EV_P_ struct ev_signal *sw, int revents)
		678	{
409	int pid, status;	679	int pid, status;
410		680
411	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	681	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	682	{
413	if (w->pid == pid \|\| w->pid == -1)	683	/* make sure we are called again until all childs have been reaped */
414	{	684	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
415	w->status = status;	685
416	event ((W)w, EV_CHILD);	686	child_reap (EV_A_ sw, pid, pid, status);
417	}	687	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		688	}
418	}	689	}
		690
		691	#endif
419		692
420	/*****************************************************************************/	693	/*****************************************************************************/
421		694
		695	#if EV_USE_KQUEUE
		696	# include "ev_kqueue.c"
		697	#endif
422	#if EV_USE_EPOLL	698	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	699	# include "ev_epoll.c"
424	#endif	700	#endif
		701	#if EV_USE_POLL
		702	# include "ev_poll.c"
		703	#endif
425	#if EV_USE_SELECT	704	#if EV_USE_SELECT
426	# include "ev_select.c"	705	# include "ev_select.c"
427	#endif	706	#endif
428		707
429	int	708	int
…		…
436	ev_version_minor (void)	715	ev_version_minor (void)
437	{	716	{
438	return EV_VERSION_MINOR;	717	return EV_VERSION_MINOR;
439	}	718	}
440		719
441	int ev_init (int flags)	720	/* return true if we are running with elevated privileges and should ignore env variables */
		721	static int
		722	enable_secure (void)
442	{	723	{
		724	#ifdef WIN32
		725	return 0;
		726	#else
		727	return getuid () != geteuid ()
		728	\|\| getgid () != getegid ();
		729	#endif
		730	}
		731
		732	int
		733	ev_method (EV_P)
		734	{
		735	return method;
		736	}
		737
		738	static void
		739	loop_init (EV_P_ int methods)
		740	{
443	if (!ev_method)	741	if (!method)
444	{	742	{
445	#if EV_USE_MONOTONIC	743	#if EV_USE_MONOTONIC
446	{	744	{
447	struct timespec ts;	745	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	746	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	747	have_monotonic = 1;
450	}	748	}
451	#endif	749	#endif
452		750
453	ev_now = ev_time ();	751	ev_rt_now = ev_time ();
454	now = get_clock ();	752	mn_now = get_clock ();
		753	now_floor = mn_now;
455	diff = ev_now - now;	754	rtmn_diff = ev_rt_now - mn_now;
456		755
457	if (pipe (sigpipe))	756	if (methods == EVMETHOD_AUTO)
458	return 0;	757	if (!enable_secure () && getenv ("LIBEV_METHODS"))
459		758	methods = atoi (getenv ("LIBEV_METHODS"));
		759	else
460	ev_method = EVMETHOD_NONE;	760	methods = EVMETHOD_ANY;
		761
		762	method = 0;
		763	#if EV_USE_WIN32
		764	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		765	#endif
		766	#if EV_USE_KQUEUE
		767	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		768	#endif
461	#if EV_USE_EPOLL	769	#if EV_USE_EPOLL
462	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	770	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		771	#endif
		772	#if EV_USE_POLL
		773	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
463	#endif	774	#endif
464	#if EV_USE_SELECT	775	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	776	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
466	#endif	777	#endif
467		778
		779	ev_init (&sigev, sigcb);
		780	ev_set_priority (&sigev, EV_MAXPRI);
		781	}
		782	}
		783
		784	void
		785	loop_destroy (EV_P)
		786	{
		787	int i;
		788
		789	#if EV_USE_WIN32
		790	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		791	#endif
		792	#if EV_USE_KQUEUE
		793	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		794	#endif
		795	#if EV_USE_EPOLL
		796	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		797	#endif
		798	#if EV_USE_POLL
		799	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		800	#endif
		801	#if EV_USE_SELECT
		802	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		803	#endif
		804
		805	for (i = NUMPRI; i--; )
		806	array_free (pending, [i]);
		807
		808	/* have to use the microsoft-never-gets-it-right macro */
		809	array_free_microshit (fdchange);
		810	array_free_microshit (timer);
		811	#if EV_PERIODICS
		812	array_free_microshit (periodic);
		813	#endif
		814	array_free_microshit (idle);
		815	array_free_microshit (prepare);
		816	array_free_microshit (check);
		817
		818	method = 0;
		819	}
		820
		821	static void
		822	loop_fork (EV_P)
		823	{
		824	#if EV_USE_EPOLL
		825	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		826	#endif
		827	#if EV_USE_KQUEUE
		828	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		829	#endif
		830
		831	if (ev_is_active (&sigev))
		832	{
		833	/* default loop */
		834
		835	ev_ref (EV_A);
		836	ev_io_stop (EV_A_ &sigev);
		837	close (sigpipe [0]);
		838	close (sigpipe [1]);
		839
		840	while (pipe (sigpipe))
		841	syserr ("(libev) error creating pipe");
		842
		843	siginit (EV_A);
		844	}
		845
		846	postfork = 0;
		847	}
		848
		849	#if EV_MULTIPLICITY
		850	struct ev_loop *
		851	ev_loop_new (int methods)
		852	{
		853	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		854
		855	memset (loop, 0, sizeof (struct ev_loop));
		856
		857	loop_init (EV_A_ methods);
		858
		859	if (ev_method (EV_A))
		860	return loop;
		861
		862	return 0;
		863	}
		864
		865	void
		866	ev_loop_destroy (EV_P)
		867	{
		868	loop_destroy (EV_A);
		869	ev_free (loop);
		870	}
		871
		872	void
		873	ev_loop_fork (EV_P)
		874	{
		875	postfork = 1;
		876	}
		877
		878	#endif
		879
		880	#if EV_MULTIPLICITY
		881	struct ev_loop *
		882	#else
		883	int
		884	#endif
		885	ev_default_loop (int methods)
		886	{
		887	if (sigpipe [0] == sigpipe [1])
		888	if (pipe (sigpipe))
		889	return 0;
		890
		891	if (!default_loop)
		892	{
		893	#if EV_MULTIPLICITY
		894	struct ev_loop *loop = default_loop = &default_loop_struct;
		895	#else
		896	default_loop = 1;
		897	#endif
		898
		899	loop_init (EV_A_ methods);
		900
468	if (ev_method)	901	if (ev_method (EV_A))
469	{	902	{
470	ev_watcher_init (&sigev, sigcb);
471	siginit ();	903	siginit (EV_A);
472		904
		905	#ifndef WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	906	ev_signal_init (&childev, childcb, SIGCHLD);
		907	ev_set_priority (&childev, EV_MAXPRI);
474	ev_signal_start (&childev);	908	ev_signal_start (EV_A_ &childev);
		909	ev_unref (EV_A); /* child watcher should not keep loop alive */
		910	#endif
475	}	911	}
		912	else
		913	default_loop = 0;
476	}	914	}
477		915
478	return ev_method;	916	return default_loop;
		917	}
		918
		919	void
		920	ev_default_destroy (void)
		921	{
		922	#if EV_MULTIPLICITY
		923	struct ev_loop *loop = default_loop;
		924	#endif
		925
		926	#ifndef WIN32
		927	ev_ref (EV_A); /* child watcher */
		928	ev_signal_stop (EV_A_ &childev);
		929	#endif
		930
		931	ev_ref (EV_A); /* signal watcher */
		932	ev_io_stop (EV_A_ &sigev);
		933
		934	close (sigpipe [0]); sigpipe [0] = 0;
		935	close (sigpipe [1]); sigpipe [1] = 0;
		936
		937	loop_destroy (EV_A);
		938	}
		939
		940	void
		941	ev_default_fork (void)
		942	{
		943	#if EV_MULTIPLICITY
		944	struct ev_loop *loop = default_loop;
		945	#endif
		946
		947	if (method)
		948	postfork = 1;
479	}	949	}
480		950
481	/*****************************************************************************/	951	/*****************************************************************************/
482		952
483	void
484	ev_prefork (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_parent (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_child (void)
497	{
498	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();
501	#endif
502
503	ev_io_stop (&sigev);
504	close (sigpipe [0]);
505	close (sigpipe [1]);
506	pipe (sigpipe);
507	siginit ();
508	}
509
510	/*****************************************************************************/
511
512	static void	953	static int
		954	any_pending (EV_P)
		955	{
		956	int pri;
		957
		958	for (pri = NUMPRI; pri--; )
		959	if (pendingcnt [pri])
		960	return 1;
		961
		962	return 0;
		963	}
		964
		965	static void
513	call_pending (void)	966	call_pending (EV_P)
514	{	967	{
		968	int pri;
		969
		970	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	971	while (pendingcnt [pri])
516	{	972	{
517	ANPENDING *p = pendings + --pendingcnt;	973	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		974
519	if (p->w)	975	if (p->w)
520	{	976	{
521	p->w->pending = 0;	977	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	978	EV_CB_INVOKE (p->w, p->events);
523	}	979	}
524	}	980	}
525	}	981	}
526		982
527	static void	983	static void
528	timers_reify (void)	984	timers_reify (EV_P)
529	{	985	{
530	while (timercnt && timers [0]->at <= now)	986	while (timercnt && ((WT)timers [0])->at <= mn_now)
531	{	987	{
532	struct ev_timer *w = timers [0];	988	struct ev_timer *w = timers [0];
		989
		990	assert (("inactive timer on timer heap detected", ev_is_active (w)));
533		991
534	/* first reschedule or stop timer */	992	/* first reschedule or stop timer */
535	if (w->repeat)	993	if (w->repeat)
536	{	994	{
		995	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		996
537	w->at = now + w->repeat;	997	((WT)w)->at += w->repeat;
538	assert (("timer timeout in the past, negative repeat?", w->at > now));	998	if (((WT)w)->at < mn_now)
		999	((WT)w)->at = mn_now;
		1000
539	downheap ((WT *)timers, timercnt, 0);	1001	downheap ((WT *)timers, timercnt, 0);
540	}	1002	}
541	else	1003	else
542	ev_timer_stop (w); /* nonrepeating: stop timer */	1004	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
543		1005
544	event ((W)w, EV_TIMEOUT);	1006	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
545	}	1007	}
546	}	1008	}
547		1009
		1010	#if EV_PERIODICS
548	static void	1011	static void
549	periodics_reify (void)	1012	periodics_reify (EV_P)
550	{	1013	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	1014	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
552	{	1015	{
553	struct ev_periodic *w = periodics [0];	1016	struct ev_periodic *w = periodics [0];
554		1017
		1018	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1019
555	/* first reschedule or stop timer */	1020	/* first reschedule or stop timer */
556	if (w->interval)	1021	if (w->reschedule_cb)
557	{	1022	{
		1023	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1024
		1025	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1026	downheap ((WT *)periodics, periodiccnt, 0);
		1027	}
		1028	else if (w->interval)
		1029	{
558	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1030	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
559	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1031	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
560	downheap ((WT *)periodics, periodiccnt, 0);	1032	downheap ((WT *)periodics, periodiccnt, 0);
561	}	1033	}
562	else	1034	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	1035	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		1036
565	event ((W)w, EV_TIMEOUT);	1037	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
566	}	1038	}
567	}	1039	}
568		1040
569	static void	1041	static void
570	periodics_reschedule (ev_tstamp diff)	1042	periodics_reschedule (EV_P)
571	{	1043	{
572	int i;	1044	int i;
573		1045
574	/* adjust periodics after time jump */	1046	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	1047	for (i = 0; i < periodiccnt; ++i)
576	{	1048	{
577	struct ev_periodic *w = periodics [i];	1049	struct ev_periodic *w = periodics [i];
578		1050
		1051	if (w->reschedule_cb)
		1052	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
579	if (w->interval)	1053	else if (w->interval)
		1054	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1055	}
		1056
		1057	/* now rebuild the heap */
		1058	for (i = periodiccnt >> 1; i--; )
		1059	downheap ((WT *)periodics, periodiccnt, i);
		1060	}
		1061	#endif
		1062
		1063	inline int
		1064	time_update_monotonic (EV_P)
		1065	{
		1066	mn_now = get_clock ();
		1067
		1068	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1069	{
		1070	ev_rt_now = rtmn_diff + mn_now;
		1071	return 0;
		1072	}
		1073	else
		1074	{
		1075	now_floor = mn_now;
		1076	ev_rt_now = ev_time ();
		1077	return 1;
		1078	}
		1079	}
		1080
		1081	static void
		1082	time_update (EV_P)
		1083	{
		1084	int i;
		1085
		1086	#if EV_USE_MONOTONIC
		1087	if (expect_true (have_monotonic))
		1088	{
		1089	if (time_update_monotonic (EV_A))
580	{	1090	{
581	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1091	ev_tstamp odiff = rtmn_diff;
582		1092
583	if (fabs (diff) >= 1e-4)	1093	for (i = 4; --i; ) /* loop a few times, before making important decisions */
584	{	1094	{
585	ev_periodic_stop (w);	1095	rtmn_diff = ev_rt_now - mn_now;
586	ev_periodic_start (w);
587		1096
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1097	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1098	return; /* all is well */
		1099
		1100	ev_rt_now = ev_time ();
		1101	mn_now = get_clock ();
		1102	now_floor = mn_now;
589	}	1103	}
		1104
		1105	# if EV_PERIODICS
		1106	periodics_reschedule (EV_A);
		1107	# endif
		1108	/* no timer adjustment, as the monotonic clock doesn't jump */
		1109	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
590	}	1110	}
591	}	1111	}
592	}	1112	else
593		1113	#endif
594	static void	1114	{
595	time_update (void)
596	{
597	int i;
598
599	ev_now = ev_time ();	1115	ev_rt_now = ev_time ();
600		1116
601	if (have_monotonic)	1117	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
602	{
603	ev_tstamp odiff = diff;
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	1118	{
607	now = get_clock ();	1119	#if EV_PERIODICS
608	diff = ev_now - now;
609
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)
611	return; /* all is well */
612
613	ev_now = ev_time ();
614	}
615
616	periodics_reschedule (diff - odiff);
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}
619	else
620	{
621	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
622	{
623	periodics_reschedule (ev_now - now);	1120	periodics_reschedule (EV_A);
		1121	#endif
624		1122
625	/* adjust timers. this is easy, as the offset is the same for all */	1123	/* adjust timers. this is easy, as the offset is the same for all */
626	for (i = 0; i < timercnt; ++i)	1124	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;	1125	((WT)timers [i])->at += ev_rt_now - mn_now;
628	}	1126	}
629		1127
630	now = ev_now;	1128	mn_now = ev_rt_now;
631	}	1129	}
632	}	1130	}
633		1131
634	int ev_loop_done;	1132	void
		1133	ev_ref (EV_P)
		1134	{
		1135	++activecnt;
		1136	}
635		1137
		1138	void
		1139	ev_unref (EV_P)
		1140	{
		1141	--activecnt;
		1142	}
		1143
		1144	static int loop_done;
		1145
		1146	void
636	void ev_loop (int flags)	1147	ev_loop (EV_P_ int flags)
637	{	1148	{
638	double block;	1149	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1150	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
640		1151
641	do	1152	do
642	{	1153	{
643	/* queue check watchers (and execute them) */	1154	/* queue check watchers (and execute them) */
644	if (preparecnt)	1155	if (expect_false (preparecnt))
645	{	1156	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1157	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();	1158	call_pending (EV_A);
648	}	1159	}
649		1160
		1161	/* we might have forked, so reify kernel state if necessary */
		1162	if (expect_false (postfork))
		1163	loop_fork (EV_A);
		1164
650	/* update fd-related kernel structures */	1165	/* update fd-related kernel structures */
651	fd_reify ();	1166	fd_reify (EV_A);
652		1167
653	/* calculate blocking time */	1168	/* calculate blocking time */
654		1169
655	/* we only need this for !monotonic clockor timers, but as we basically	1170	/* we only need this for !monotonic clock or timers, but as we basically
656	always have timers, we just calculate it always */	1171	always have timers, we just calculate it always */
		1172	#if EV_USE_MONOTONIC
		1173	if (expect_true (have_monotonic))
		1174	time_update_monotonic (EV_A);
		1175	else
		1176	#endif
		1177	{
657	ev_now = ev_time ();	1178	ev_rt_now = ev_time ();
		1179	mn_now = ev_rt_now;
		1180	}
658		1181
659	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1182	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
660	block = 0.;	1183	block = 0.;
661	else	1184	else
662	{	1185	{
663	block = MAX_BLOCKTIME;	1186	block = MAX_BLOCKTIME;
664		1187
665	if (timercnt)	1188	if (timercnt)
666	{	1189	{
667	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1190	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
668	if (block > to) block = to;	1191	if (block > to) block = to;
669	}	1192	}
670		1193
		1194	#if EV_PERIODICS
671	if (periodiccnt)	1195	if (periodiccnt)
672	{	1196	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1197	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
674	if (block > to) block = to;	1198	if (block > to) block = to;
675	}	1199	}
		1200	#endif
676		1201
677	if (block < 0.) block = 0.;	1202	if (block < 0.) block = 0.;
678	}	1203	}
679		1204
680	method_poll (block);	1205	method_poll (EV_A_ block);
681		1206
682	/* update ev_now, do magic */	1207	/* update ev_rt_now, do magic */
683	time_update ();	1208	time_update (EV_A);
684		1209
685	/* queue pending timers and reschedule them */	1210	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	1211	timers_reify (EV_A); /* relative timers called last */
		1212	#if EV_PERIODICS
687	periodics_reify (); /* absolute timers called first */	1213	periodics_reify (EV_A); /* absolute timers called first */
		1214	#endif
688		1215
689	/* queue idle watchers unless io or timers are pending */	1216	/* queue idle watchers unless io or timers are pending */
690	if (!pendingcnt)	1217	if (idlecnt && !any_pending (EV_A))
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	1218	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		1219
693	/* queue check watchers, to be executed first */	1220	/* queue check watchers, to be executed first */
694	if (checkcnt)	1221	if (checkcnt)
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	1222	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		1223
697	call_pending ();	1224	call_pending (EV_A);
698	}	1225	}
699	while (!ev_loop_done);	1226	while (activecnt && !loop_done);
700		1227
701	if (ev_loop_done != 2)	1228	if (loop_done != 2)
702	ev_loop_done = 0;	1229	loop_done = 0;
		1230	}
		1231
		1232	void
		1233	ev_unloop (EV_P_ int how)
		1234	{
		1235	loop_done = how;
703	}	1236	}
704		1237
705	/*****************************************************************************/	1238	/*****************************************************************************/
706		1239
707	static void	1240	inline void
708	wlist_add (WL *head, WL elem)	1241	wlist_add (WL *head, WL elem)
709	{	1242	{
710	elem->next = *head;	1243	elem->next = *head;
711	*head = elem;	1244	*head = elem;
712	}	1245	}
713		1246
714	static void	1247	inline void
715	wlist_del (WL *head, WL elem)	1248	wlist_del (WL *head, WL elem)
716	{	1249	{
717	while (*head)	1250	while (*head)
718	{	1251	{
719	if (*head == elem)	1252	if (*head == elem)
…		…
724		1257
725	head = &(*head)->next;	1258	head = &(*head)->next;
726	}	1259	}
727	}	1260	}
728		1261
729	static void	1262	inline void
730	ev_clear (W w)	1263	ev_clear_pending (EV_P_ W w)
731	{	1264	{
732	if (w->pending)	1265	if (w->pending)
733	{	1266	{
734	pendings [w->pending - 1].w = 0;	1267	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	1268	w->pending = 0;
736	}	1269	}
737	}	1270	}
738		1271
739	static void	1272	inline void
740	ev_start (W w, int active)	1273	ev_start (EV_P_ W w, int active)
741	{	1274	{
		1275	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1276	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1277
742	w->active = active;	1278	w->active = active;
		1279	ev_ref (EV_A);
743	}	1280	}
744		1281
745	static void	1282	inline void
746	ev_stop (W w)	1283	ev_stop (EV_P_ W w)
747	{	1284	{
		1285	ev_unref (EV_A);
748	w->active = 0;	1286	w->active = 0;
749	}	1287	}
750		1288
751	/*****************************************************************************/	1289	/*****************************************************************************/
752		1290
753	void	1291	void
754	ev_io_start (struct ev_io *w)	1292	ev_io_start (EV_P_ struct ev_io *w)
755	{	1293	{
		1294	int fd = w->fd;
		1295
756	if (ev_is_active (w))	1296	if (ev_is_active (w))
757	return;	1297	return;
758		1298
759	int fd = w->fd;	1299	assert (("ev_io_start called with negative fd", fd >= 0));
760		1300
761	ev_start ((W)w, 1);	1301	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1302	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1303	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		1304
765	fd_change (fd);	1305	fd_change (EV_A_ fd);
766	}	1306	}
767		1307
768	void	1308	void
769	ev_io_stop (struct ev_io *w)	1309	ev_io_stop (EV_P_ struct ev_io *w)
770	{	1310	{
771	ev_clear ((W)w);	1311	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	1312	if (!ev_is_active (w))
773	return;	1313	return;
774		1314
		1315	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1316
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1317	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	1318	ev_stop (EV_A_ (W)w);
777		1319
778	fd_change (w->fd);	1320	fd_change (EV_A_ w->fd);
779	}	1321	}
780		1322
781	void	1323	void
782	ev_timer_start (struct ev_timer *w)	1324	ev_timer_start (EV_P_ struct ev_timer *w)
783	{	1325	{
784	if (ev_is_active (w))	1326	if (ev_is_active (w))
785	return;	1327	return;
786		1328
787	w->at += now;	1329	((WT)w)->at += mn_now;
788		1330
789	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1331	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
790		1332
791	ev_start ((W)w, ++timercnt);	1333	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	1334	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
793	timers [timercnt - 1] = w;	1335	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	1336	upheap ((WT *)timers, timercnt - 1);
795	}
796		1337
		1338	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1339	}
		1340
797	void	1341	void
798	ev_timer_stop (struct ev_timer *w)	1342	ev_timer_stop (EV_P_ struct ev_timer *w)
799	{	1343	{
800	ev_clear ((W)w);	1344	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1345	if (!ev_is_active (w))
802	return;	1346	return;
803		1347
		1348	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1349
804	if (w->active < timercnt--)	1350	if (((W)w)->active < timercnt--)
805	{	1351	{
806	timers [w->active - 1] = timers [timercnt];	1352	timers [((W)w)->active - 1] = timers [timercnt];
807	downheap ((WT *)timers, timercnt, w->active - 1);	1353	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
808	}	1354	}
809		1355
810	w->at = w->repeat;	1356	((WT)w)->at -= mn_now;
811		1357
812	ev_stop ((W)w);	1358	ev_stop (EV_A_ (W)w);
813	}	1359	}
814		1360
815	void	1361	void
816	ev_timer_again (struct ev_timer *w)	1362	ev_timer_again (EV_P_ struct ev_timer *w)
817	{	1363	{
818	if (ev_is_active (w))	1364	if (ev_is_active (w))
819	{	1365	{
820	if (w->repeat)	1366	if (w->repeat)
821	{	1367	{
822	w->at = now + w->repeat;	1368	((WT)w)->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
824	}	1370	}
825	else	1371	else
826	ev_timer_stop (w);	1372	ev_timer_stop (EV_A_ w);
827	}	1373	}
828	else if (w->repeat)	1374	else if (w->repeat)
829	ev_timer_start (w);	1375	ev_timer_start (EV_A_ w);
830	}	1376	}
831		1377
		1378	#if EV_PERIODICS
832	void	1379	void
833	ev_periodic_start (struct ev_periodic *w)	1380	ev_periodic_start (EV_P_ struct ev_periodic *w)
834	{	1381	{
835	if (ev_is_active (w))	1382	if (ev_is_active (w))
836	return;	1383	return;
837		1384
838	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1385	if (w->reschedule_cb)
839		1386	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1387	else if (w->interval)
		1388	{
		1389	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
840	/* this formula differs from the one in periodic_reify because we do not always round up */	1390	/* this formula differs from the one in periodic_reify because we do not always round up */
841	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1391	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1392	}
843		1393
844	ev_start ((W)w, ++periodiccnt);	1394	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1395	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
846	periodics [periodiccnt - 1] = w;	1396	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1397	upheap ((WT *)periodics, periodiccnt - 1);
848	}
849		1398
		1399	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1400	}
		1401
850	void	1402	void
851	ev_periodic_stop (struct ev_periodic *w)	1403	ev_periodic_stop (EV_P_ struct ev_periodic *w)
852	{	1404	{
853	ev_clear ((W)w);	1405	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1406	if (!ev_is_active (w))
855	return;	1407	return;
856		1408
		1409	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1410
857	if (w->active < periodiccnt--)	1411	if (((W)w)->active < periodiccnt--)
858	{	1412	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1413	periodics [((W)w)->active - 1] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1414	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
861	}	1415	}
862		1416
863	ev_stop ((W)w);	1417	ev_stop (EV_A_ (W)w);
864	}	1418	}
865		1419
866	void	1420	void
		1421	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1422	{
		1423	/* TODO: use adjustheap and recalculation */
		1424	ev_periodic_stop (EV_A_ w);
		1425	ev_periodic_start (EV_A_ w);
		1426	}
		1427	#endif
		1428
		1429	void
867	ev_signal_start (struct ev_signal *w)	1430	ev_idle_start (EV_P_ struct ev_idle *w)
868	{	1431	{
869	if (ev_is_active (w))	1432	if (ev_is_active (w))
870	return;	1433	return;
871		1434
		1435	ev_start (EV_A_ (W)w, ++idlecnt);
		1436	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1437	idles [idlecnt - 1] = w;
		1438	}
		1439
		1440	void
		1441	ev_idle_stop (EV_P_ struct ev_idle *w)
		1442	{
		1443	ev_clear_pending (EV_A_ (W)w);
		1444	if (!ev_is_active (w))
		1445	return;
		1446
		1447	idles [((W)w)->active - 1] = idles [--idlecnt];
		1448	ev_stop (EV_A_ (W)w);
		1449	}
		1450
		1451	void
		1452	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1453	{
		1454	if (ev_is_active (w))
		1455	return;
		1456
		1457	ev_start (EV_A_ (W)w, ++preparecnt);
		1458	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1459	prepares [preparecnt - 1] = w;
		1460	}
		1461
		1462	void
		1463	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1464	{
		1465	ev_clear_pending (EV_A_ (W)w);
		1466	if (!ev_is_active (w))
		1467	return;
		1468
		1469	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1470	ev_stop (EV_A_ (W)w);
		1471	}
		1472
		1473	void
		1474	ev_check_start (EV_P_ struct ev_check *w)
		1475	{
		1476	if (ev_is_active (w))
		1477	return;
		1478
		1479	ev_start (EV_A_ (W)w, ++checkcnt);
		1480	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1481	checks [checkcnt - 1] = w;
		1482	}
		1483
		1484	void
		1485	ev_check_stop (EV_P_ struct ev_check *w)
		1486	{
		1487	ev_clear_pending (EV_A_ (W)w);
		1488	if (!ev_is_active (w))
		1489	return;
		1490
		1491	checks [((W)w)->active - 1] = checks [--checkcnt];
		1492	ev_stop (EV_A_ (W)w);
		1493	}
		1494
		1495	#ifndef SA_RESTART
		1496	# define SA_RESTART 0
		1497	#endif
		1498
		1499	void
		1500	ev_signal_start (EV_P_ struct ev_signal *w)
		1501	{
		1502	#if EV_MULTIPLICITY
		1503	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1504	#endif
		1505	if (ev_is_active (w))
		1506	return;
		1507
		1508	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1509
872	ev_start ((W)w, 1);	1510	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1511	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1512	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1513
876	if (!w->next)	1514	if (!((WL)w)->next)
877	{	1515	{
		1516	#if WIN32
		1517	signal (w->signum, sighandler);
		1518	#else
878	struct sigaction sa;	1519	struct sigaction sa;
879	sa.sa_handler = sighandler;	1520	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1521	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1522	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1523	sigaction (w->signum, &sa, 0);
		1524	#endif
883	}	1525	}
884	}	1526	}
885		1527
886	void	1528	void
887	ev_signal_stop (struct ev_signal *w)	1529	ev_signal_stop (EV_P_ struct ev_signal *w)
888	{	1530	{
889	ev_clear ((W)w);	1531	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1532	if (!ev_is_active (w))
891	return;	1533	return;
892		1534
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1535	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1536	ev_stop (EV_A_ (W)w);
895		1537
896	if (!signals [w->signum - 1].head)	1538	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1539	signal (w->signum, SIG_DFL);
898	}	1540	}
899		1541
900	void	1542	void
901	ev_idle_start (struct ev_idle *w)	1543	ev_child_start (EV_P_ struct ev_child *w)
902	{	1544	{
		1545	#if EV_MULTIPLICITY
		1546	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1547	#endif
903	if (ev_is_active (w))	1548	if (ev_is_active (w))
904	return;	1549	return;
905		1550
906	ev_start ((W)w, ++idlecnt);
907	array_needsize (idles, idlemax, idlecnt, );
908	idles [idlecnt - 1] = w;
909	}
910
911	void
912	ev_idle_stop (struct ev_idle *w)
913	{
914	ev_clear ((W)w);
915	if (ev_is_active (w))
916	return;
917
918	idles [w->active - 1] = idles [--idlecnt];
919	ev_stop ((W)w);
920	}
921
922	void
923	ev_prepare_start (struct ev_prepare *w)
924	{
925	if (ev_is_active (w))
926	return;
927
928	ev_start ((W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );
930	prepares [preparecnt - 1] = w;
931	}
932
933	void
934	ev_prepare_stop (struct ev_prepare *w)
935	{
936	ev_clear ((W)w);
937	if (ev_is_active (w))
938	return;
939
940	prepares [w->active - 1] = prepares [--preparecnt];
941	ev_stop ((W)w);
942	}
943
944	void
945	ev_check_start (struct ev_check *w)
946	{
947	if (ev_is_active (w))
948	return;
949
950	ev_start ((W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );
952	checks [checkcnt - 1] = w;
953	}
954
955	void
956	ev_check_stop (struct ev_check *w)
957	{
958	ev_clear ((W)w);
959	if (ev_is_active (w))
960	return;
961
962	checks [w->active - 1] = checks [--checkcnt];
963	ev_stop ((W)w);
964	}
965
966	void
967	ev_child_start (struct ev_child *w)
968	{
969	if (ev_is_active (w))
970	return;
971
972	ev_start ((W)w, 1);	1551	ev_start (EV_A_ (W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1552	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}	1553	}
975		1554
976	void	1555	void
977	ev_child_stop (struct ev_child *w)	1556	ev_child_stop (EV_P_ struct ev_child *w)
978	{	1557	{
979	ev_clear ((W)w);	1558	ev_clear_pending (EV_A_ (W)w);
980	if (ev_is_active (w))	1559	if (!ev_is_active (w))
981	return;	1560	return;
982		1561
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1562	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
984	ev_stop ((W)w);	1563	ev_stop (EV_A_ (W)w);
985	}	1564	}
986		1565
987	/*****************************************************************************/	1566	/*****************************************************************************/
988		1567
989	struct ev_once	1568	struct ev_once
…		…
993	void (cb)(int revents, void arg);	1572	void (cb)(int revents, void arg);
994	void *arg;	1573	void *arg;
995	};	1574	};
996		1575
997	static void	1576	static void
998	once_cb (struct ev_once *once, int revents)	1577	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	1578	{
1000	void (cb)(int revents, void arg) = once->cb;	1579	void (cb)(int revents, void arg) = once->cb;
1001	void *arg = once->arg;	1580	void *arg = once->arg;
1002		1581
1003	ev_io_stop (&once->io);	1582	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	1583	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	1584	ev_free (once);
1006		1585
1007	cb (revents, arg);	1586	cb (revents, arg);
1008	}	1587	}
1009		1588
1010	static void	1589	static void
1011	once_cb_io (struct ev_io *w, int revents)	1590	once_cb_io (EV_P_ struct ev_io *w, int revents)
1012	{	1591	{
1013	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1592	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1014	}	1593	}
1015		1594
1016	static void	1595	static void
1017	once_cb_to (struct ev_timer *w, int revents)	1596	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1018	{	1597	{
1019	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1598	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1020	}	1599	}
1021		1600
1022	void	1601	void
1023	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1602	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1024	{	1603	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	1604	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1026		1605
1027	if (!once)	1606	if (!once)
1028	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1607	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1029	else	1608	else
1030	{	1609	{
1031	once->cb = cb;	1610	once->cb = cb;
1032	once->arg = arg;	1611	once->arg = arg;
1033		1612
1034	ev_watcher_init (&once->io, once_cb_io);	1613	ev_init (&once->io, once_cb_io);
1035	if (fd >= 0)	1614	if (fd >= 0)
1036	{	1615	{
1037	ev_io_set (&once->io, fd, events);	1616	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	1617	ev_io_start (EV_A_ &once->io);
1039	}	1618	}
1040		1619
1041	ev_watcher_init (&once->to, once_cb_to);	1620	ev_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	1621	if (timeout >= 0.)
1043	{	1622	{
1044	ev_timer_set (&once->to, timeout, 0.);	1623	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	1624	ev_timer_start (EV_A_ &once->to);
1046	}	1625	}
1047	}	1626	}
1048	}	1627	}
1049		1628
1050	/*****************************************************************************/	1629	#ifdef __cplusplus
1051
1052	#if 0
1053
1054	struct ev_io wio;
1055
1056	static void
1057	sin_cb (struct ev_io *w, int revents)
1058	{
1059	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1060	}	1630	}
1061
1062	static void
1063	ocb (struct ev_timer *w, int revents)
1064	{
1065	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1066	ev_timer_stop (w);
1067	ev_timer_start (w);
1068	}
1069
1070	static void
1071	scb (struct ev_signal *w, int revents)
1072	{
1073	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1074	ev_io_stop (&wio);
1075	ev_io_start (&wio);
1076	}
1077
1078	static void
1079	gcb (struct ev_signal *w, int revents)
1080	{
1081	fprintf (stderr, "generic %x\n", revents);
1082
1083	}
1084
1085	int main (void)
1086	{
1087	ev_init (0);
1088
1089	ev_io_init (&wio, sin_cb, 0, EV_READ);
1090	ev_io_start (&wio);
1091
1092	struct ev_timer t[10000];
1093
1094	#if 0
1095	int i;
1096	for (i = 0; i < 10000; ++i)
1097	{
1098	struct ev_timer *w = t + i;
1099	ev_watcher_init (w, ocb, i);
1100	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1101	ev_timer_start (w);
1102	if (drand48 () < 0.5)
1103	ev_timer_stop (w);
1104	}
1105	#endif	1631	#endif
1106		1632
1107	struct ev_timer t1;
1108	ev_timer_init (&t1, ocb, 5, 10);
1109	ev_timer_start (&t1);
1110
1111	struct ev_signal sig;
1112	ev_signal_init (&sig, scb, SIGQUIT);
1113	ev_signal_start (&sig);
1114
1115	struct ev_check cw;
1116	ev_check_init (&cw, gcb);
1117	ev_check_start (&cw);
1118
1119	struct ev_idle iw;
1120	ev_idle_init (&iw, gcb);
1121	ev_idle_start (&iw);
1122
1123	ev_loop (0);
1124
1125	return 0;
1126	}
1127
1128	#endif
1129
1130
1131
1132

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Comparing libev/ev.c (file contents): Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs. Revision 1.101 by root, Sun Nov 11 04:04:23 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.101 by root, Sun Nov 11 04:04:23 2007 UTC