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

Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs.
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
30	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
31	#endif	55	#endif
32		56
33	#include <math.h>	57	#include <math.h>
34	#include <stdlib.h>	58	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	59	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	60	#include <stddef.h>
39		61
40	#include <stdio.h>	62	#include <stdio.h>
41		63
42	#include <assert.h>	64	#include <assert.h>
43	#include <errno.h>	65	#include <errno.h>
44	#include <sys/types.h>	66	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	67	#include <time.h>
48		68
		69	#include <signal.h>
		70
		71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
		74	# include <sys/wait.h>
		75	#endif
		76	/**/
		77
49	#ifndef EV_USE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	80	#endif
54		81
55	#ifndef EV_USE_SELECT	82	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	83	# define EV_USE_SELECT 1
57	#endif	84	#endif
58		85
		86	#ifndef EV_USE_POLL
		87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		88	#endif
		89
59	#ifndef EV_USE_EPOLL	90	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	91	# define EV_USE_EPOLL 0
61	#endif	92	#endif
62		93
		94	#ifndef EV_USE_KQUEUE
		95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
		105	# endif
		106	#endif
		107
		108	#ifndef EV_USE_REALTIME
		109	# define EV_USE_REALTIME 1
		110	#endif
		111
		112	/**/
		113
		114	#ifndef CLOCK_MONOTONIC
		115	# undef EV_USE_MONOTONIC
		116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
63	#ifndef CLOCK_REALTIME	119	#ifndef CLOCK_REALTIME
		120	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	121	# define EV_USE_REALTIME 0
65	#endif	122	#endif
66	#ifndef EV_USE_REALTIME	123
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	124	/**/
68	#endif
69		125
70	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	127	#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 */	128	#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 */	129	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
74		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
75	#include "ev.h"	134	# include "ev.h"
		135	#endif
		136
		137	#if __GNUC__ >= 3
		138	# define expect(expr,value) __builtin_expect ((expr),(value))
		139	# define inline inline
		140	#else
		141	# define expect(expr,value) (expr)
		142	# define inline static
		143	#endif
		144
		145	#define expect_false(expr) expect ((expr) != 0, 0)
		146	#define expect_true(expr) expect ((expr) != 0, 1)
		147
		148	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		149	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
76		150
77	typedef struct ev_watcher *W;	151	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	152	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	153	typedef struct ev_watcher_time *WT;
80		154
81	static ev_tstamp now, diff; /* monotonic clock */	155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
82	ev_tstamp ev_now;
83	int ev_method;
84		156
85	static int have_monotonic; /* runtime */	157	#include "ev_win32.c"
86
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		158
91	/*****************************************************************************/	159	/*****************************************************************************/
92		160
93	ev_tstamp	161	static void (syserr_cb)(const char msg);
		162
		163	void ev_set_syserr_cb (void (cb)(const char msg))
		164	{
		165	syserr_cb = cb;
		166	}
		167
		168	static void
		169	syserr (const char *msg)
		170	{
		171	if (!msg)
		172	msg = "(libev) system error";
		173
		174	if (syserr_cb)
		175	syserr_cb (msg);
		176	else
		177	{
		178	perror (msg);
		179	abort ();
		180	}
		181	}
		182
		183	static void (alloc)(void *ptr, long size);
		184
		185	void ev_set_allocator (void (cb)(void *ptr, long size))
		186	{
		187	alloc = cb;
		188	}
		189
		190	static void *
		191	ev_realloc (void *ptr, long size)
		192	{
		193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		194
		195	if (!ptr && size)
		196	{
		197	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		198	abort ();
		199	}
		200
		201	return ptr;
		202	}
		203
		204	#define ev_malloc(size) ev_realloc (0, (size))
		205	#define ev_free(ptr) ev_realloc ((ptr), 0)
		206
		207	/*****************************************************************************/
		208
		209	typedef struct
		210	{
		211	WL head;
		212	unsigned char events;
		213	unsigned char reify;
		214	} ANFD;
		215
		216	typedef struct
		217	{
		218	W w;
		219	int events;
		220	} ANPENDING;
		221
		222	#if EV_MULTIPLICITY
		223
		224	struct ev_loop
		225	{
		226	#define VAR(name,decl) decl;
		227	#include "ev_vars.h"
		228	#undef VAR
		229	};
		230	#include "ev_wrap.h"
		231
		232	struct ev_loop default_loop_struct;
		233	static struct ev_loop *default_loop;
		234
		235	#else
		236
		237	#define VAR(name,decl) static decl;
		238	#include "ev_vars.h"
		239	#undef VAR
		240
		241	static int default_loop;
		242
		243	#endif
		244
		245	/*****************************************************************************/
		246
		247	inline ev_tstamp
94	ev_time (void)	248	ev_time (void)
95	{	249	{
96	#if EV_USE_REALTIME	250	#if EV_USE_REALTIME
97	struct timespec ts;	251	struct timespec ts;
98	clock_gettime (CLOCK_REALTIME, &ts);	252	clock_gettime (CLOCK_REALTIME, &ts);
…		…
102	gettimeofday (&tv, 0);	256	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	257	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	258	#endif
105	}	259	}
106		260
107	static ev_tstamp	261	inline ev_tstamp
108	get_clock (void)	262	get_clock (void)
109	{	263	{
110	#if EV_USE_MONOTONIC	264	#if EV_USE_MONOTONIC
111	if (have_monotonic)	265	if (expect_true (have_monotonic))
112	{	266	{
113	struct timespec ts;	267	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	268	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	269	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	270	}
117	#endif	271	#endif
118		272
119	return ev_time ();	273	return ev_time ();
120	}	274	}
121		275
		276	#if EV_MULTIPLICITY
		277	ev_tstamp
		278	ev_now (EV_P)
		279	{
		280	return ev_rt_now;
		281	}
		282	#endif
		283
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	284	#define array_roundsize(type,n) ((n) \| 4 & ~3)
123		285
124	#define array_needsize(base,cur,cnt,init) \	286	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	287	if (expect_false ((cnt) > cur)) \
126	{ \	288	{ \
127	int newcnt = cur; \	289	int newcnt = cur; \
128	do \	290	do \
129	{ \	291	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	292	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	293	} \
132	while ((cnt) > newcnt); \	294	while ((cnt) > newcnt); \
133	\	295	\
134	base = realloc (base, sizeof (base) (newcnt)); \	296	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	297	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	298	cur = newcnt; \
137	}	299	}
		300
		301	#define array_slim(type,stem) \
		302	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		303	{ \
		304	stem ## max = array_roundsize (stem ## cnt >> 1); \
		305	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		306	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		307	}
		308
		309	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		310	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		311	#define array_free_microshit(stem) \
		312	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		313
		314	#define array_free(stem, idx) \
		315	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		316
139	/*****************************************************************************/	317	/*****************************************************************************/
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		318
150	static void	319	static void
151	anfds_init (ANFD *base, int count)	320	anfds_init (ANFD *base, int count)
152	{	321	{
153	while (count--)	322	while (count--)
154	{	323	{
155	base->head = 0;	324	base->head = 0;
156	base->events = EV_NONE;	325	base->events = EV_NONE;
		326	base->reify = 0;
		327
157	++base;	328	++base;
158	}	329	}
159	}	330	}
160		331
161	typedef struct	332	void
		333	ev_feed_event (EV_P_ void *w, int revents)
162	{	334	{
163	W w;	335	W w_ = (W)w;
164	int events;
165	} ANPENDING;
166		336
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void
171	event (W w, int events)
172	{
173	if (w->pending)	337	if (w_->pending)
174	{	338	{
175	pendings [w->pending - 1].events \|= events;	339	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
176	return;	340	return;
177	}	341	}
178		342
179	w->pending = ++pendingcnt;	343	w_->pending = ++pendingcnt [ABSPRI (w_)];
180	array_needsize (pendings, pendingmax, pendingcnt, );	344	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
181	pendings [pendingcnt - 1].w = w;	345	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
182	pendings [pendingcnt - 1].events = events;	346	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
183	}	347	}
184		348
185	static void	349	static void
186	queue_events (W *events, int eventcnt, int type)	350	queue_events (EV_P_ W *events, int eventcnt, int type)
187	{	351	{
188	int i;	352	int i;
189		353
190	for (i = 0; i < eventcnt; ++i)	354	for (i = 0; i < eventcnt; ++i)
191	event (events [i], type);	355	ev_feed_event (EV_A_ events [i], type);
192	}	356	}
193		357
194	static void	358	inline void
195	fd_event (int fd, int events)	359	fd_event (EV_P_ int fd, int revents)
196	{	360	{
197	ANFD *anfd = anfds + fd;	361	ANFD *anfd = anfds + fd;
198	struct ev_io *w;	362	struct ev_io *w;
199		363
200	for (w = anfd->head; w; w = w->next)	364	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
201	{	365	{
202	int ev = w->events & events;	366	int ev = w->events & revents;
203		367
204	if (ev)	368	if (ev)
205	event ((W)w, ev);	369	ev_feed_event (EV_A_ (W)w, ev);
206	}	370	}
		371	}
		372
		373	void
		374	ev_feed_fd_event (EV_P_ int fd, int revents)
		375	{
		376	fd_event (EV_A_ fd, revents);
207	}	377	}
208		378
209	/*****************************************************************************/	379	/*****************************************************************************/
210		380
211	static int *fdchanges;
212	static int fdchangemax, fdchangecnt;
213
214	static void	381	static void
215	fd_reify (void)	382	fd_reify (EV_P)
216	{	383	{
217	int i;	384	int i;
218		385
219	for (i = 0; i < fdchangecnt; ++i)	386	for (i = 0; i < fdchangecnt; ++i)
220	{	387	{
…		…
222	ANFD *anfd = anfds + fd;	389	ANFD *anfd = anfds + fd;
223	struct ev_io *w;	390	struct ev_io *w;
224		391
225	int events = 0;	392	int events = 0;
226		393
227	for (w = anfd->head; w; w = w->next)	394	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
228	events \|= w->events;	395	events \|= w->events;
229		396
230	anfd->events &= ~EV_REIFY;	397	anfd->reify = 0;
231		398
232	if (anfd->events != events)
233	{
234	method_modify (fd, anfd->events, events);	399	method_modify (EV_A_ fd, anfd->events, events);
235	anfd->events = events;	400	anfd->events = events;
236	}
237	}	401	}
238		402
239	fdchangecnt = 0;	403	fdchangecnt = 0;
240	}	404	}
241		405
242	static void	406	static void
243	fd_change (int fd)	407	fd_change (EV_P_ int fd)
244	{	408	{
245	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	409	if (anfds [fd].reify)
246	return;	410	return;
247		411
248	anfds [fd].events \|= EV_REIFY;	412	anfds [fd].reify = 1;
249		413
250	++fdchangecnt;	414	++fdchangecnt;
251	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	415	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
252	fdchanges [fdchangecnt - 1] = fd;	416	fdchanges [fdchangecnt - 1] = fd;
253	}	417	}
254		418
		419	static void
		420	fd_kill (EV_P_ int fd)
		421	{
		422	struct ev_io *w;
		423
		424	while ((w = (struct ev_io *)anfds [fd].head))
		425	{
		426	ev_io_stop (EV_A_ w);
		427	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		428	}
		429	}
		430
		431	static int
		432	fd_valid (int fd)
		433	{
		434	#ifdef WIN32
		435	return !!win32_get_osfhandle (fd);
		436	#else
		437	return fcntl (fd, F_GETFD) != -1;
		438	#endif
		439	}
		440
255	/* called on EBADF to verify fds */	441	/* called on EBADF to verify fds */
256	static void	442	static void
257	fd_recheck (void)	443	fd_ebadf (EV_P)
258	{	444	{
259	int fd;	445	int fd;
260		446
261	for (fd = 0; fd < anfdmax; ++fd)	447	for (fd = 0; fd < anfdmax; ++fd)
262	if (anfds [fd].events)	448	if (anfds [fd].events)
263	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	449	if (!fd_valid (fd) == -1 && errno == EBADF)
264	while (anfds [fd].head)	450	fd_kill (EV_A_ fd);
		451	}
		452
		453	/* called on ENOMEM in select/poll to kill some fds and retry */
		454	static void
		455	fd_enomem (EV_P)
		456	{
		457	int fd;
		458
		459	for (fd = anfdmax; fd--; )
		460	if (anfds [fd].events)
265	{	461	{
266	ev_io_stop (anfds [fd].head);	462	fd_kill (EV_A_ fd);
267	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	463	return;
268	}	464	}
		465	}
		466
		467	/* usually called after fork if method needs to re-arm all fds from scratch */
		468	static void
		469	fd_rearm_all (EV_P)
		470	{
		471	int fd;
		472
		473	/* this should be highly optimised to not do anything but set a flag */
		474	for (fd = 0; fd < anfdmax; ++fd)
		475	if (anfds [fd].events)
		476	{
		477	anfds [fd].events = 0;
		478	fd_change (EV_A_ fd);
		479	}
269	}	480	}
270		481
271	/*****************************************************************************/	482	/*****************************************************************************/
272		483
273	static struct ev_timer **timers;
274	static int timermax, timercnt;
275
276	static struct ev_periodic **periodics;
277	static int periodicmax, periodiccnt;
278
279	static void	484	static void
280	upheap (WT *timers, int k)	485	upheap (WT *heap, int k)
281	{	486	{
282	WT w = timers [k];	487	WT w = heap [k];
283		488
284	while (k && timers [k >> 1]->at > w->at)	489	while (k && heap [k >> 1]->at > w->at)
285	{	490	{
286	timers [k] = timers [k >> 1];	491	heap [k] = heap [k >> 1];
287	timers [k]->active = k + 1;	492	((W)heap [k])->active = k + 1;
288	k >>= 1;	493	k >>= 1;
289	}	494	}
290		495
291	timers [k] = w;	496	heap [k] = w;
292	timers [k]->active = k + 1;	497	((W)heap [k])->active = k + 1;
293		498
294	}	499	}
295		500
296	static void	501	static void
297	downheap (WT *timers, int N, int k)	502	downheap (WT *heap, int N, int k)
298	{	503	{
299	WT w = timers [k];	504	WT w = heap [k];
300		505
301	while (k < (N >> 1))	506	while (k < (N >> 1))
302	{	507	{
303	int j = k << 1;	508	int j = k << 1;
304		509
305	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	510	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
306	++j;	511	++j;
307		512
308	if (w->at <= timers [j]->at)	513	if (w->at <= heap [j]->at)
309	break;	514	break;
310		515
311	timers [k] = timers [j];	516	heap [k] = heap [j];
312	timers [k]->active = k + 1;	517	((W)heap [k])->active = k + 1;
313	k = j;	518	k = j;
314	}	519	}
315		520
316	timers [k] = w;	521	heap [k] = w;
317	timers [k]->active = k + 1;	522	((W)heap [k])->active = k + 1;
		523	}
		524
		525	inline void
		526	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		527	{
		528	ev_tstamp old_at = heap [k]->at;
		529	heap [k]->at = at;
		530
		531	if (old_at < at)
		532	downheap (heap, N, k);
		533	else
		534	upheap (heap, k);
318	}	535	}
319		536
320	/*****************************************************************************/	537	/*****************************************************************************/
321		538
322	typedef struct	539	typedef struct
323	{	540	{
324	struct ev_signal *head;	541	WL head;
325	sig_atomic_t gotsig;	542	sig_atomic_t volatile gotsig;
326	} ANSIG;	543	} ANSIG;
327		544
328	static ANSIG *signals;	545	static ANSIG *signals;
329	static int signalmax;	546	static int signalmax;
330		547
331	static int sigpipe [2];	548	static int sigpipe [2];
332	static sig_atomic_t gotsig;	549	static sig_atomic_t volatile gotsig;
333	static struct ev_io sigev;	550	static struct ev_io sigev;
334		551
335	static void	552	static void
336	signals_init (ANSIG *base, int count)	553	signals_init (ANSIG *base, int count)
337	{	554	{
338	while (count--)	555	while (count--)
339	{	556	{
340	base->head = 0;	557	base->head = 0;
341	base->gotsig = 0;	558	base->gotsig = 0;
		559
342	++base;	560	++base;
343	}	561	}
344	}	562	}
345		563
346	static void	564	static void
347	sighandler (int signum)	565	sighandler (int signum)
348	{	566	{
		567	#if WIN32
		568	signal (signum, sighandler);
		569	#endif
		570
349	signals [signum - 1].gotsig = 1;	571	signals [signum - 1].gotsig = 1;
350		572
351	if (!gotsig)	573	if (!gotsig)
352	{	574	{
		575	int old_errno = errno;
353	gotsig = 1;	576	gotsig = 1;
		577	#ifdef WIN32
		578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		579	#else
354	write (sigpipe [1], &gotsig, 1);	580	write (sigpipe [1], &signum, 1);
		581	#endif
		582	errno = old_errno;
355	}	583	}
356	}	584	}
357		585
		586	void
		587	ev_feed_signal_event (EV_P_ int signum)
		588	{
		589	WL w;
		590
		591	#if EV_MULTIPLICITY
		592	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		593	#endif
		594
		595	--signum;
		596
		597	if (signum < 0 \|\| signum >= signalmax)
		598	return;
		599
		600	signals [signum].gotsig = 0;
		601
		602	for (w = signals [signum].head; w; w = w->next)
		603	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		604	}
		605
358	static void	606	static void
359	sigcb (struct ev_io *iow, int revents)	607	sigcb (EV_P_ struct ev_io *iow, int revents)
360	{	608	{
361	struct ev_signal *w;
362	int sig;	609	int signum;
363		610
		611	#ifdef WIN32
		612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		613	#else
		614	read (sigpipe [0], &revents, 1);
		615	#endif
364	gotsig = 0;	616	gotsig = 0;
365	read (sigpipe [0], &revents, 1);
366		617
367	for (sig = signalmax; sig--; )	618	for (signum = signalmax; signum--; )
368	if (signals [sig].gotsig)	619	if (signals [signum].gotsig)
369	{	620	ev_feed_signal_event (EV_A_ signum + 1);
370	signals [sig].gotsig = 0;
371
372	for (w = signals [sig].head; w; w = w->next)
373	event ((W)w, EV_SIGNAL);
374	}
375	}	621	}
376		622
377	static void	623	static void
378	siginit (void)	624	siginit (EV_P)
379	{	625	{
		626	#ifndef WIN32
380	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	627	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
381	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	628	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
382		629
383	/* rather than sort out wether we really need nb, set it */	630	/* rather than sort out wether we really need nb, set it */
384	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	631	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
385	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	632	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		633	#endif
386		634
387	ev_io_set (&sigev, sigpipe [0], EV_READ);	635	ev_io_set (&sigev, sigpipe [0], EV_READ);
388	ev_io_start (&sigev);	636	ev_io_start (EV_A_ &sigev);
		637	ev_unref (EV_A); /* child watcher should not keep loop alive */
389	}	638	}
390		639
391	/*****************************************************************************/	640	/*****************************************************************************/
392		641
393	static struct ev_idle **idles;
394	static int idlemax, idlecnt;
395
396	static struct ev_prepare **prepares;
397	static int preparemax, preparecnt;
398
399	static struct ev_check **checks;
400	static int checkmax, checkcnt;
401
402	/*****************************************************************************/
403
404	static struct ev_child *childs [PID_HASHSIZE];	642	static struct ev_child *childs [PID_HASHSIZE];
		643
		644	#ifndef WIN32
		645
405	static struct ev_signal childev;	646	static struct ev_signal childev;
406		647
407	#ifndef WCONTINUED	648	#ifndef WCONTINUED
408	# define WCONTINUED 0	649	# define WCONTINUED 0
409	#endif	650	#endif
410		651
411	static void	652	static void
412	childcb (struct ev_signal *sw, int revents)	653	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
413	{	654	{
414	struct ev_child *w;	655	struct ev_child *w;
		656
		657	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		658	if (w->pid == pid \|\| !w->pid)
		659	{
		660	ev_priority (w) = ev_priority (sw); /* need to do it now */
		661	w->rpid = pid;
		662	w->rstatus = status;
		663	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		664	}
		665	}
		666
		667	static void
		668	childcb (EV_P_ struct ev_signal *sw, int revents)
		669	{
415	int pid, status;	670	int pid, status;
416		671
417	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	672	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
418	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	673	{
419	if (w->pid == pid \|\| w->pid == -1)	674	/* make sure we are called again until all childs have been reaped */
420	{	675	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
421	w->status = status;	676
422	event ((W)w, EV_CHILD);	677	child_reap (EV_A_ sw, pid, pid, status);
423	}	678	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		679	}
424	}	680	}
		681
		682	#endif
425		683
426	/*****************************************************************************/	684	/*****************************************************************************/
427		685
		686	#if EV_USE_KQUEUE
		687	# include "ev_kqueue.c"
		688	#endif
428	#if EV_USE_EPOLL	689	#if EV_USE_EPOLL
429	# include "ev_epoll.c"	690	# include "ev_epoll.c"
430	#endif	691	#endif
		692	#if EV_USE_POLL
		693	# include "ev_poll.c"
		694	#endif
431	#if EV_USE_SELECT	695	#if EV_USE_SELECT
432	# include "ev_select.c"	696	# include "ev_select.c"
433	#endif	697	#endif
434		698
435	int	699	int
…		…
442	ev_version_minor (void)	706	ev_version_minor (void)
443	{	707	{
444	return EV_VERSION_MINOR;	708	return EV_VERSION_MINOR;
445	}	709	}
446		710
447	int ev_init (int flags)	711	/* return true if we are running with elevated privileges and should ignore env variables */
		712	static int
		713	enable_secure (void)
448	{	714	{
		715	#ifdef WIN32
		716	return 0;
		717	#else
		718	return getuid () != geteuid ()
		719	\|\| getgid () != getegid ();
		720	#endif
		721	}
		722
		723	int
		724	ev_method (EV_P)
		725	{
		726	return method;
		727	}
		728
		729	static void
		730	loop_init (EV_P_ int methods)
		731	{
449	if (!ev_method)	732	if (!method)
450	{	733	{
451	#if EV_USE_MONOTONIC	734	#if EV_USE_MONOTONIC
452	{	735	{
453	struct timespec ts;	736	struct timespec ts;
454	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
455	have_monotonic = 1;	738	have_monotonic = 1;
456	}	739	}
457	#endif	740	#endif
458		741
459	ev_now = ev_time ();	742	ev_rt_now = ev_time ();
460	now = get_clock ();	743	mn_now = get_clock ();
		744	now_floor = mn_now;
461	diff = ev_now - now;	745	rtmn_diff = ev_rt_now - mn_now;
462		746
463	if (pipe (sigpipe))	747	if (methods == EVMETHOD_AUTO)
464	return 0;	748	if (!enable_secure () && getenv ("LIBEV_METHODS"))
465		749	methods = atoi (getenv ("LIBEV_METHODS"));
		750	else
466	ev_method = EVMETHOD_NONE;	751	methods = EVMETHOD_ANY;
		752
		753	method = 0;
		754	#if EV_USE_WIN32
		755	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		756	#endif
		757	#if EV_USE_KQUEUE
		758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		759	#endif
467	#if EV_USE_EPOLL	760	#if EV_USE_EPOLL
468	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		762	#endif
		763	#if EV_USE_POLL
		764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
469	#endif	765	#endif
470	#if EV_USE_SELECT	766	#if EV_USE_SELECT
471	if (ev_method == EVMETHOD_NONE) select_init (flags);	767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
472	#endif	768	#endif
473		769
		770	ev_init (&sigev, sigcb);
		771	ev_set_priority (&sigev, EV_MAXPRI);
		772	}
		773	}
		774
		775	void
		776	loop_destroy (EV_P)
		777	{
		778	int i;
		779
		780	#if EV_USE_WIN32
		781	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		782	#endif
		783	#if EV_USE_KQUEUE
		784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		785	#endif
		786	#if EV_USE_EPOLL
		787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		788	#endif
		789	#if EV_USE_POLL
		790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		791	#endif
		792	#if EV_USE_SELECT
		793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		794	#endif
		795
		796	for (i = NUMPRI; i--; )
		797	array_free (pending, [i]);
		798
		799	/* have to use the microsoft-never-gets-it-right macro */
		800	array_free_microshit (fdchange);
		801	array_free_microshit (timer);
		802	array_free_microshit (periodic);
		803	array_free_microshit (idle);
		804	array_free_microshit (prepare);
		805	array_free_microshit (check);
		806
		807	method = 0;
		808	}
		809
		810	static void
		811	loop_fork (EV_P)
		812	{
		813	#if EV_USE_EPOLL
		814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		815	#endif
		816	#if EV_USE_KQUEUE
		817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		818	#endif
		819
		820	if (ev_is_active (&sigev))
		821	{
		822	/* default loop */
		823
		824	ev_ref (EV_A);
		825	ev_io_stop (EV_A_ &sigev);
		826	close (sigpipe [0]);
		827	close (sigpipe [1]);
		828
		829	while (pipe (sigpipe))
		830	syserr ("(libev) error creating pipe");
		831
		832	siginit (EV_A);
		833	}
		834
		835	postfork = 0;
		836	}
		837
		838	#if EV_MULTIPLICITY
		839	struct ev_loop *
		840	ev_loop_new (int methods)
		841	{
		842	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		843
		844	memset (loop, 0, sizeof (struct ev_loop));
		845
		846	loop_init (EV_A_ methods);
		847
		848	if (ev_method (EV_A))
		849	return loop;
		850
		851	return 0;
		852	}
		853
		854	void
		855	ev_loop_destroy (EV_P)
		856	{
		857	loop_destroy (EV_A);
		858	ev_free (loop);
		859	}
		860
		861	void
		862	ev_loop_fork (EV_P)
		863	{
		864	postfork = 1;
		865	}
		866
		867	#endif
		868
		869	#if EV_MULTIPLICITY
		870	struct ev_loop *
		871	#else
		872	int
		873	#endif
		874	ev_default_loop (int methods)
		875	{
		876	if (sigpipe [0] == sigpipe [1])
		877	if (pipe (sigpipe))
		878	return 0;
		879
		880	if (!default_loop)
		881	{
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *loop = default_loop = &default_loop_struct;
		884	#else
		885	default_loop = 1;
		886	#endif
		887
		888	loop_init (EV_A_ methods);
		889
474	if (ev_method)	890	if (ev_method (EV_A))
475	{	891	{
476	ev_watcher_init (&sigev, sigcb);
477	siginit ();	892	siginit (EV_A);
478		893
		894	#ifndef WIN32
479	ev_signal_init (&childev, childcb, SIGCHLD);	895	ev_signal_init (&childev, childcb, SIGCHLD);
		896	ev_set_priority (&childev, EV_MAXPRI);
480	ev_signal_start (&childev);	897	ev_signal_start (EV_A_ &childev);
		898	ev_unref (EV_A); /* child watcher should not keep loop alive */
		899	#endif
481	}	900	}
		901	else
		902	default_loop = 0;
482	}	903	}
483		904
484	return ev_method;	905	return default_loop;
		906	}
		907
		908	void
		909	ev_default_destroy (void)
		910	{
		911	#if EV_MULTIPLICITY
		912	struct ev_loop *loop = default_loop;
		913	#endif
		914
		915	#ifndef WIN32
		916	ev_ref (EV_A); /* child watcher */
		917	ev_signal_stop (EV_A_ &childev);
		918	#endif
		919
		920	ev_ref (EV_A); /* signal watcher */
		921	ev_io_stop (EV_A_ &sigev);
		922
		923	close (sigpipe [0]); sigpipe [0] = 0;
		924	close (sigpipe [1]); sigpipe [1] = 0;
		925
		926	loop_destroy (EV_A);
		927	}
		928
		929	void
		930	ev_default_fork (void)
		931	{
		932	#if EV_MULTIPLICITY
		933	struct ev_loop *loop = default_loop;
		934	#endif
		935
		936	if (method)
		937	postfork = 1;
485	}	938	}
486		939
487	/*****************************************************************************/	940	/*****************************************************************************/
488		941
489	void
490	ev_prefork (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_parent (void)
497	{
498	/* nop */
499	}
500
501	void
502	ev_postfork_child (void)
503	{
504	#if EV_USE_EPOLL
505	if (ev_method == EVMETHOD_EPOLL)
506	epoll_postfork_child ();
507	#endif
508
509	ev_io_stop (&sigev);
510	close (sigpipe [0]);
511	close (sigpipe [1]);
512	pipe (sigpipe);
513	siginit ();
514	}
515
516	/*****************************************************************************/
517
518	static void	942	static int
		943	any_pending (EV_P)
		944	{
		945	int pri;
		946
		947	for (pri = NUMPRI; pri--; )
		948	if (pendingcnt [pri])
		949	return 1;
		950
		951	return 0;
		952	}
		953
		954	static void
519	call_pending (void)	955	call_pending (EV_P)
520	{	956	{
		957	int pri;
		958
		959	for (pri = NUMPRI; pri--; )
521	while (pendingcnt)	960	while (pendingcnt [pri])
522	{	961	{
523	ANPENDING *p = pendings + --pendingcnt;	962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
524		963
525	if (p->w)	964	if (p->w)
526	{	965	{
527	p->w->pending = 0;	966	p->w->pending = 0;
528	p->w->cb (p->w, p->events);	967	EV_CB_INVOKE (p->w, p->events);
529	}	968	}
530	}	969	}
531	}	970	}
532		971
533	static void	972	static void
534	timers_reify (void)	973	timers_reify (EV_P)
535	{	974	{
536	while (timercnt && timers [0]->at <= now)	975	while (timercnt && ((WT)timers [0])->at <= mn_now)
537	{	976	{
538	struct ev_timer *w = timers [0];	977	struct ev_timer *w = timers [0];
		978
		979	assert (("inactive timer on timer heap detected", ev_is_active (w)));
539		980
540	/* first reschedule or stop timer */	981	/* first reschedule or stop timer */
541	if (w->repeat)	982	if (w->repeat)
542	{	983	{
		984	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
543	w->at = now + w->repeat;	985	((WT)w)->at = mn_now + w->repeat;
544	assert (("timer timeout in the past, negative repeat?", w->at > now));
545	downheap ((WT *)timers, timercnt, 0);	986	downheap ((WT *)timers, timercnt, 0);
546	}	987	}
547	else	988	else
548	ev_timer_stop (w); /* nonrepeating: stop timer */	989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
549		990
550	event ((W)w, EV_TIMEOUT);	991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
551	}	992	}
552	}	993	}
553		994
554	static void	995	static void
555	periodics_reify (void)	996	periodics_reify (EV_P)
556	{	997	{
557	while (periodiccnt && periodics [0]->at <= ev_now)	998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
558	{	999	{
559	struct ev_periodic *w = periodics [0];	1000	struct ev_periodic *w = periodics [0];
560		1001
		1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1003
561	/* first reschedule or stop timer */	1004	/* first reschedule or stop timer */
562	if (w->interval)	1005	if (w->reschedule_cb)
563	{	1006	{
		1007	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1008
		1009	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1010	downheap ((WT *)periodics, periodiccnt, 0);
		1011	}
		1012	else if (w->interval)
		1013	{
564	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1014	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
565	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1015	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
566	downheap ((WT *)periodics, periodiccnt, 0);	1016	downheap ((WT *)periodics, periodiccnt, 0);
567	}	1017	}
568	else	1018	else
569	ev_periodic_stop (w); /* nonrepeating: stop timer */	1019	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
570		1020
571	event ((W)w, EV_TIMEOUT);	1021	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
572	}	1022	}
573	}	1023	}
574		1024
575	static void	1025	static void
576	periodics_reschedule (ev_tstamp diff)	1026	periodics_reschedule (EV_P)
577	{	1027	{
578	int i;	1028	int i;
579		1029
580	/* adjust periodics after time jump */	1030	/* adjust periodics after time jump */
581	for (i = 0; i < periodiccnt; ++i)	1031	for (i = 0; i < periodiccnt; ++i)
582	{	1032	{
583	struct ev_periodic *w = periodics [i];	1033	struct ev_periodic *w = periodics [i];
584		1034
		1035	if (w->reschedule_cb)
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
585	if (w->interval)	1037	else if (w->interval)
		1038	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1039	}
		1040
		1041	/* now rebuild the heap */
		1042	for (i = periodiccnt >> 1; i--; )
		1043	downheap ((WT *)periodics, periodiccnt, i);
		1044	}
		1045
		1046	inline int
		1047	time_update_monotonic (EV_P)
		1048	{
		1049	mn_now = get_clock ();
		1050
		1051	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1052	{
		1053	ev_rt_now = rtmn_diff + mn_now;
		1054	return 0;
		1055	}
		1056	else
		1057	{
		1058	now_floor = mn_now;
		1059	ev_rt_now = ev_time ();
		1060	return 1;
		1061	}
		1062	}
		1063
		1064	static void
		1065	time_update (EV_P)
		1066	{
		1067	int i;
		1068
		1069	#if EV_USE_MONOTONIC
		1070	if (expect_true (have_monotonic))
		1071	{
		1072	if (time_update_monotonic (EV_A))
586	{	1073	{
587	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1074	ev_tstamp odiff = rtmn_diff;
588		1075
589	if (fabs (diff) >= 1e-4)	1076	for (i = 4; --i; ) /* loop a few times, before making important decisions */
590	{	1077	{
591	ev_periodic_stop (w);	1078	rtmn_diff = ev_rt_now - mn_now;
592	ev_periodic_start (w);
593		1079
594	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1080	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1081	return; /* all is well */
		1082
		1083	ev_rt_now = ev_time ();
		1084	mn_now = get_clock ();
		1085	now_floor = mn_now;
595	}	1086	}
		1087
		1088	periodics_reschedule (EV_A);
		1089	/* no timer adjustment, as the monotonic clock doesn't jump */
		1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
596	}	1091	}
597	}	1092	}
598	}	1093	else
599		1094	#endif
600	static void	1095	{
601	time_update (void)
602	{
603	int i;
604
605	ev_now = ev_time ();	1096	ev_rt_now = ev_time ();
606		1097
607	if (have_monotonic)	1098	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
608	{
609	ev_tstamp odiff = diff;
610
611	for (i = 4; --i; ) /* loop a few times, before making important decisions */
612	{	1099	{
613	now = get_clock ();
614	diff = ev_now - now;
615
616	if (fabs (odiff - diff) < MIN_TIMEJUMP)
617	return; /* all is well */
618
619	ev_now = ev_time ();
620	}
621
622	periodics_reschedule (diff - odiff);
623	/* no timer adjustment, as the monotonic clock doesn't jump */
624	}
625	else
626	{
627	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
628	{
629	periodics_reschedule (ev_now - now);	1100	periodics_reschedule (EV_A);
630		1101
631	/* adjust timers. this is easy, as the offset is the same for all */	1102	/* adjust timers. this is easy, as the offset is the same for all */
632	for (i = 0; i < timercnt; ++i)	1103	for (i = 0; i < timercnt; ++i)
633	timers [i]->at += diff;	1104	((WT)timers [i])->at += ev_rt_now - mn_now;
634	}	1105	}
635		1106
636	now = ev_now;	1107	mn_now = ev_rt_now;
637	}	1108	}
638	}	1109	}
639		1110
640	int ev_loop_done;	1111	void
		1112	ev_ref (EV_P)
		1113	{
		1114	++activecnt;
		1115	}
641		1116
		1117	void
		1118	ev_unref (EV_P)
		1119	{
		1120	--activecnt;
		1121	}
		1122
		1123	static int loop_done;
		1124
		1125	void
642	void ev_loop (int flags)	1126	ev_loop (EV_P_ int flags)
643	{	1127	{
644	double block;	1128	double block;
645	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1129	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
646		1130
647	do	1131	do
648	{	1132	{
649	/* queue check watchers (and execute them) */	1133	/* queue check watchers (and execute them) */
650	if (preparecnt)	1134	if (expect_false (preparecnt))
651	{	1135	{
652	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
653	call_pending ();	1137	call_pending (EV_A);
654	}	1138	}
655		1139
		1140	/* we might have forked, so reify kernel state if necessary */
		1141	if (expect_false (postfork))
		1142	loop_fork (EV_A);
		1143
656	/* update fd-related kernel structures */	1144	/* update fd-related kernel structures */
657	fd_reify ();	1145	fd_reify (EV_A);
658		1146
659	/* calculate blocking time */	1147	/* calculate blocking time */
660		1148
661	/* we only need this for !monotonic clockor timers, but as we basically	1149	/* we only need this for !monotonic clock or timers, but as we basically
662	always have timers, we just calculate it always */	1150	always have timers, we just calculate it always */
		1151	#if EV_USE_MONOTONIC
		1152	if (expect_true (have_monotonic))
		1153	time_update_monotonic (EV_A);
		1154	else
		1155	#endif
		1156	{
663	ev_now = ev_time ();	1157	ev_rt_now = ev_time ();
		1158	mn_now = ev_rt_now;
		1159	}
664		1160
665	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1161	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
666	block = 0.;	1162	block = 0.;
667	else	1163	else
668	{	1164	{
669	block = MAX_BLOCKTIME;	1165	block = MAX_BLOCKTIME;
670		1166
671	if (timercnt)	1167	if (timercnt)
672	{	1168	{
673	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
674	if (block > to) block = to;	1170	if (block > to) block = to;
675	}	1171	}
676		1172
677	if (periodiccnt)	1173	if (periodiccnt)
678	{	1174	{
679	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1175	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
680	if (block > to) block = to;	1176	if (block > to) block = to;
681	}	1177	}
682		1178
683	if (block < 0.) block = 0.;	1179	if (block < 0.) block = 0.;
684	}	1180	}
685		1181
686	method_poll (block);	1182	method_poll (EV_A_ block);
687		1183
688	/* update ev_now, do magic */	1184	/* update ev_rt_now, do magic */
689	time_update ();	1185	time_update (EV_A);
690		1186
691	/* queue pending timers and reschedule them */	1187	/* queue pending timers and reschedule them */
692	timers_reify (); /* relative timers called last */	1188	timers_reify (EV_A); /* relative timers called last */
693	periodics_reify (); /* absolute timers called first */	1189	periodics_reify (EV_A); /* absolute timers called first */
694		1190
695	/* queue idle watchers unless io or timers are pending */	1191	/* queue idle watchers unless io or timers are pending */
696	if (!pendingcnt)	1192	if (idlecnt && !any_pending (EV_A))
697	queue_events ((W *)idles, idlecnt, EV_IDLE);	1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
698		1194
699	/* queue check watchers, to be executed first */	1195	/* queue check watchers, to be executed first */
700	if (checkcnt)	1196	if (checkcnt)
701	queue_events ((W *)checks, checkcnt, EV_CHECK);	1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
702		1198
703	call_pending ();	1199	call_pending (EV_A);
704	}	1200	}
705	while (!ev_loop_done);	1201	while (activecnt && !loop_done);
706		1202
707	if (ev_loop_done != 2)	1203	if (loop_done != 2)
708	ev_loop_done = 0;	1204	loop_done = 0;
		1205	}
		1206
		1207	void
		1208	ev_unloop (EV_P_ int how)
		1209	{
		1210	loop_done = how;
709	}	1211	}
710		1212
711	/*****************************************************************************/	1213	/*****************************************************************************/
712		1214
713	static void	1215	inline void
714	wlist_add (WL *head, WL elem)	1216	wlist_add (WL *head, WL elem)
715	{	1217	{
716	elem->next = *head;	1218	elem->next = *head;
717	*head = elem;	1219	*head = elem;
718	}	1220	}
719		1221
720	static void	1222	inline void
721	wlist_del (WL *head, WL elem)	1223	wlist_del (WL *head, WL elem)
722	{	1224	{
723	while (*head)	1225	while (*head)
724	{	1226	{
725	if (*head == elem)	1227	if (*head == elem)
…		…
730		1232
731	head = &(*head)->next;	1233	head = &(*head)->next;
732	}	1234	}
733	}	1235	}
734		1236
735	static void	1237	inline void
736	ev_clear (W w)	1238	ev_clear_pending (EV_P_ W w)
737	{	1239	{
738	if (w->pending)	1240	if (w->pending)
739	{	1241	{
740	pendings [w->pending - 1].w = 0;	1242	pendings [ABSPRI (w)][w->pending - 1].w = 0;
741	w->pending = 0;	1243	w->pending = 0;
742	}	1244	}
743	}	1245	}
744		1246
745	static void	1247	inline void
746	ev_start (W w, int active)	1248	ev_start (EV_P_ W w, int active)
747	{	1249	{
		1250	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1251	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1252
748	w->active = active;	1253	w->active = active;
		1254	ev_ref (EV_A);
749	}	1255	}
750		1256
751	static void	1257	inline void
752	ev_stop (W w)	1258	ev_stop (EV_P_ W w)
753	{	1259	{
		1260	ev_unref (EV_A);
754	w->active = 0;	1261	w->active = 0;
755	}	1262	}
756		1263
757	/*****************************************************************************/	1264	/*****************************************************************************/
758		1265
759	void	1266	void
760	ev_io_start (struct ev_io *w)	1267	ev_io_start (EV_P_ struct ev_io *w)
761	{	1268	{
		1269	int fd = w->fd;
		1270
762	if (ev_is_active (w))	1271	if (ev_is_active (w))
763	return;	1272	return;
764		1273
765	int fd = w->fd;	1274	assert (("ev_io_start called with negative fd", fd >= 0));
766		1275
767	ev_start ((W)w, 1);	1276	ev_start (EV_A_ (W)w, 1);
768	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1277	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
769	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1278	wlist_add ((WL *)&anfds[fd].head, (WL)w);
770		1279
771	fd_change (fd);	1280	fd_change (EV_A_ fd);
772	}	1281	}
773		1282
774	void	1283	void
775	ev_io_stop (struct ev_io *w)	1284	ev_io_stop (EV_P_ struct ev_io *w)
776	{	1285	{
777	ev_clear ((W)w);	1286	ev_clear_pending (EV_A_ (W)w);
778	if (!ev_is_active (w))	1287	if (!ev_is_active (w))
779	return;	1288	return;
780		1289
781	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1290	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
782	ev_stop ((W)w);	1291	ev_stop (EV_A_ (W)w);
783		1292
784	fd_change (w->fd);	1293	fd_change (EV_A_ w->fd);
785	}	1294	}
786		1295
787	void	1296	void
788	ev_timer_start (struct ev_timer *w)	1297	ev_timer_start (EV_P_ struct ev_timer *w)
789	{	1298	{
790	if (ev_is_active (w))	1299	if (ev_is_active (w))
791	return;	1300	return;
792		1301
793	w->at += now;	1302	((WT)w)->at += mn_now;
794		1303
795	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1304	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
796		1305
797	ev_start ((W)w, ++timercnt);	1306	ev_start (EV_A_ (W)w, ++timercnt);
798	array_needsize (timers, timermax, timercnt, );	1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
799	timers [timercnt - 1] = w;	1308	timers [timercnt - 1] = w;
800	upheap ((WT *)timers, timercnt - 1);	1309	upheap ((WT *)timers, timercnt - 1);
801	}
802		1310
		1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1312	}
		1313
803	void	1314	void
804	ev_timer_stop (struct ev_timer *w)	1315	ev_timer_stop (EV_P_ struct ev_timer *w)
805	{	1316	{
806	ev_clear ((W)w);	1317	ev_clear_pending (EV_A_ (W)w);
807	if (!ev_is_active (w))	1318	if (!ev_is_active (w))
808	return;	1319	return;
809		1320
		1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1322
810	if (w->active < timercnt--)	1323	if (((W)w)->active < timercnt--)
811	{	1324	{
812	timers [w->active - 1] = timers [timercnt];	1325	timers [((W)w)->active - 1] = timers [timercnt];
813	downheap ((WT *)timers, timercnt, w->active - 1);	1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
814	}	1327	}
815		1328
816	w->at = w->repeat;	1329	((WT)w)->at = w->repeat;
817		1330
818	ev_stop ((W)w);	1331	ev_stop (EV_A_ (W)w);
819	}	1332	}
820		1333
821	void	1334	void
822	ev_timer_again (struct ev_timer *w)	1335	ev_timer_again (EV_P_ struct ev_timer *w)
823	{	1336	{
824	if (ev_is_active (w))	1337	if (ev_is_active (w))
825	{	1338	{
826	if (w->repeat)	1339	if (w->repeat)
827	{
828	w->at = now + w->repeat;
829	downheap ((WT *)timers, timercnt, w->active - 1);	1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
830	}
831	else	1341	else
832	ev_timer_stop (w);	1342	ev_timer_stop (EV_A_ w);
833	}	1343	}
834	else if (w->repeat)	1344	else if (w->repeat)
835	ev_timer_start (w);	1345	ev_timer_start (EV_A_ w);
836	}	1346	}
837		1347
838	void	1348	void
839	ev_periodic_start (struct ev_periodic *w)	1349	ev_periodic_start (EV_P_ struct ev_periodic *w)
840	{	1350	{
841	if (ev_is_active (w))	1351	if (ev_is_active (w))
842	return;	1352	return;
843		1353
844	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1354	if (w->reschedule_cb)
845		1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1356	else if (w->interval)
		1357	{
		1358	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
846	/* this formula differs from the one in periodic_reify because we do not always round up */	1359	/* this formula differs from the one in periodic_reify because we do not always round up */
847	if (w->interval)
848	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1360	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1361	}
849		1362
850	ev_start ((W)w, ++periodiccnt);	1363	ev_start (EV_A_ (W)w, ++periodiccnt);
851	array_needsize (periodics, periodicmax, periodiccnt, );	1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
852	periodics [periodiccnt - 1] = w;	1365	periodics [periodiccnt - 1] = w;
853	upheap ((WT *)periodics, periodiccnt - 1);	1366	upheap ((WT *)periodics, periodiccnt - 1);
854	}
855		1367
		1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1369	}
		1370
856	void	1371	void
857	ev_periodic_stop (struct ev_periodic *w)	1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)
858	{	1373	{
859	ev_clear ((W)w);	1374	ev_clear_pending (EV_A_ (W)w);
860	if (!ev_is_active (w))	1375	if (!ev_is_active (w))
861	return;	1376	return;
862		1377
		1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1379
863	if (w->active < periodiccnt--)	1380	if (((W)w)->active < periodiccnt--)
864	{	1381	{
865	periodics [w->active - 1] = periodics [periodiccnt];	1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];
866	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
867	}	1384	}
868		1385
869	ev_stop ((W)w);	1386	ev_stop (EV_A_ (W)w);
870	}	1387	}
871		1388
872	void	1389	void
		1390	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1391	{
		1392	/* TODO: use adjustheap and recalculation */
		1393	ev_periodic_stop (EV_A_ w);
		1394	ev_periodic_start (EV_A_ w);
		1395	}
		1396
		1397	void
873	ev_signal_start (struct ev_signal *w)	1398	ev_idle_start (EV_P_ struct ev_idle *w)
874	{	1399	{
875	if (ev_is_active (w))	1400	if (ev_is_active (w))
876	return;	1401	return;
877		1402
		1403	ev_start (EV_A_ (W)w, ++idlecnt);
		1404	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1405	idles [idlecnt - 1] = w;
		1406	}
		1407
		1408	void
		1409	ev_idle_stop (EV_P_ struct ev_idle *w)
		1410	{
		1411	ev_clear_pending (EV_A_ (W)w);
		1412	if (ev_is_active (w))
		1413	return;
		1414
		1415	idles [((W)w)->active - 1] = idles [--idlecnt];
		1416	ev_stop (EV_A_ (W)w);
		1417	}
		1418
		1419	void
		1420	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1421	{
		1422	if (ev_is_active (w))
		1423	return;
		1424
		1425	ev_start (EV_A_ (W)w, ++preparecnt);
		1426	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1427	prepares [preparecnt - 1] = w;
		1428	}
		1429
		1430	void
		1431	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1432	{
		1433	ev_clear_pending (EV_A_ (W)w);
		1434	if (ev_is_active (w))
		1435	return;
		1436
		1437	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1438	ev_stop (EV_A_ (W)w);
		1439	}
		1440
		1441	void
		1442	ev_check_start (EV_P_ struct ev_check *w)
		1443	{
		1444	if (ev_is_active (w))
		1445	return;
		1446
		1447	ev_start (EV_A_ (W)w, ++checkcnt);
		1448	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1449	checks [checkcnt - 1] = w;
		1450	}
		1451
		1452	void
		1453	ev_check_stop (EV_P_ struct ev_check *w)
		1454	{
		1455	ev_clear_pending (EV_A_ (W)w);
		1456	if (ev_is_active (w))
		1457	return;
		1458
		1459	checks [((W)w)->active - 1] = checks [--checkcnt];
		1460	ev_stop (EV_A_ (W)w);
		1461	}
		1462
		1463	#ifndef SA_RESTART
		1464	# define SA_RESTART 0
		1465	#endif
		1466
		1467	void
		1468	ev_signal_start (EV_P_ struct ev_signal *w)
		1469	{
		1470	#if EV_MULTIPLICITY
		1471	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1472	#endif
		1473	if (ev_is_active (w))
		1474	return;
		1475
		1476	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1477
878	ev_start ((W)w, 1);	1478	ev_start (EV_A_ (W)w, 1);
879	array_needsize (signals, signalmax, w->signum, signals_init);	1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
880	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
881		1481
882	if (!w->next)	1482	if (!((WL)w)->next)
883	{	1483	{
		1484	#if WIN32
		1485	signal (w->signum, sighandler);
		1486	#else
884	struct sigaction sa;	1487	struct sigaction sa;
885	sa.sa_handler = sighandler;	1488	sa.sa_handler = sighandler;
886	sigfillset (&sa.sa_mask);	1489	sigfillset (&sa.sa_mask);
887	sa.sa_flags = 0;	1490	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
888	sigaction (w->signum, &sa, 0);	1491	sigaction (w->signum, &sa, 0);
		1492	#endif
889	}	1493	}
890	}	1494	}
891		1495
892	void	1496	void
893	ev_signal_stop (struct ev_signal *w)	1497	ev_signal_stop (EV_P_ struct ev_signal *w)
894	{	1498	{
895	ev_clear ((W)w);	1499	ev_clear_pending (EV_A_ (W)w);
896	if (!ev_is_active (w))	1500	if (!ev_is_active (w))
897	return;	1501	return;
898		1502
899	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1503	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
900	ev_stop ((W)w);	1504	ev_stop (EV_A_ (W)w);
901		1505
902	if (!signals [w->signum - 1].head)	1506	if (!signals [w->signum - 1].head)
903	signal (w->signum, SIG_DFL);	1507	signal (w->signum, SIG_DFL);
904	}	1508	}
905		1509
906	void	1510	void
907	ev_idle_start (struct ev_idle *w)	1511	ev_child_start (EV_P_ struct ev_child *w)
908	{	1512	{
		1513	#if EV_MULTIPLICITY
		1514	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1515	#endif
909	if (ev_is_active (w))	1516	if (ev_is_active (w))
910	return;	1517	return;
911		1518
912	ev_start ((W)w, ++idlecnt);	1519	ev_start (EV_A_ (W)w, 1);
913	array_needsize (idles, idlemax, idlecnt, );	1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
914	idles [idlecnt - 1] = w;
915	}	1521	}
916		1522
917	void	1523	void
918	ev_idle_stop (struct ev_idle *w)	1524	ev_child_stop (EV_P_ struct ev_child *w)
919	{	1525	{
920	ev_clear ((W)w);	1526	ev_clear_pending (EV_A_ (W)w);
921	if (ev_is_active (w))	1527	if (ev_is_active (w))
922	return;	1528	return;
923		1529
924	idles [w->active - 1] = idles [--idlecnt];
925	ev_stop ((W)w);
926	}
927
928	void
929	ev_prepare_start (struct ev_prepare *w)
930	{
931	if (ev_is_active (w))
932	return;
933
934	ev_start ((W)w, ++preparecnt);
935	array_needsize (prepares, preparemax, preparecnt, );
936	prepares [preparecnt - 1] = w;
937	}
938
939	void
940	ev_prepare_stop (struct ev_prepare *w)
941	{
942	ev_clear ((W)w);
943	if (ev_is_active (w))
944	return;
945
946	prepares [w->active - 1] = prepares [--preparecnt];
947	ev_stop ((W)w);
948	}
949
950	void
951	ev_check_start (struct ev_check *w)
952	{
953	if (ev_is_active (w))
954	return;
955
956	ev_start ((W)w, ++checkcnt);
957	array_needsize (checks, checkmax, checkcnt, );
958	checks [checkcnt - 1] = w;
959	}
960
961	void
962	ev_check_stop (struct ev_check *w)
963	{
964	ev_clear ((W)w);
965	if (ev_is_active (w))
966	return;
967
968	checks [w->active - 1] = checks [--checkcnt];
969	ev_stop ((W)w);
970	}
971
972	void
973	ev_child_start (struct ev_child *w)
974	{
975	if (ev_is_active (w))
976	return;
977
978	ev_start ((W)w, 1);
979	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	}
981
982	void
983	ev_child_stop (struct ev_child *w)
984	{
985	ev_clear ((W)w);
986	if (ev_is_active (w))
987	return;
988
989	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1530	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	ev_stop ((W)w);	1531	ev_stop (EV_A_ (W)w);
991	}	1532	}
992		1533
993	/*****************************************************************************/	1534	/*****************************************************************************/
994		1535
995	struct ev_once	1536	struct ev_once
…		…
999	void (cb)(int revents, void arg);	1540	void (cb)(int revents, void arg);
1000	void *arg;	1541	void *arg;
1001	};	1542	};
1002		1543
1003	static void	1544	static void
1004	once_cb (struct ev_once *once, int revents)	1545	once_cb (EV_P_ struct ev_once *once, int revents)
1005	{	1546	{
1006	void (cb)(int revents, void arg) = once->cb;	1547	void (cb)(int revents, void arg) = once->cb;
1007	void *arg = once->arg;	1548	void *arg = once->arg;
1008		1549
1009	ev_io_stop (&once->io);	1550	ev_io_stop (EV_A_ &once->io);
1010	ev_timer_stop (&once->to);	1551	ev_timer_stop (EV_A_ &once->to);
1011	free (once);	1552	ev_free (once);
1012		1553
1013	cb (revents, arg);	1554	cb (revents, arg);
1014	}	1555	}
1015		1556
1016	static void	1557	static void
1017	once_cb_io (struct ev_io *w, int revents)	1558	once_cb_io (EV_P_ struct ev_io *w, int revents)
1018	{	1559	{
1019	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1560	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1020	}	1561	}
1021		1562
1022	static void	1563	static void
1023	once_cb_to (struct ev_timer *w, int revents)	1564	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1024	{	1565	{
1025	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1566	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1026	}	1567	}
1027		1568
1028	void	1569	void
1029	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1570	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1030	{	1571	{
1031	struct ev_once *once = malloc (sizeof (struct ev_once));	1572	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1032		1573
1033	if (!once)	1574	if (!once)
1034	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1575	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1035	else	1576	else
1036	{	1577	{
1037	once->cb = cb;	1578	once->cb = cb;
1038	once->arg = arg;	1579	once->arg = arg;
1039		1580
1040	ev_watcher_init (&once->io, once_cb_io);	1581	ev_init (&once->io, once_cb_io);
1041	if (fd >= 0)	1582	if (fd >= 0)
1042	{	1583	{
1043	ev_io_set (&once->io, fd, events);	1584	ev_io_set (&once->io, fd, events);
1044	ev_io_start (&once->io);	1585	ev_io_start (EV_A_ &once->io);
1045	}	1586	}
1046		1587
1047	ev_watcher_init (&once->to, once_cb_to);	1588	ev_init (&once->to, once_cb_to);
1048	if (timeout >= 0.)	1589	if (timeout >= 0.)
1049	{	1590	{
1050	ev_timer_set (&once->to, timeout, 0.);	1591	ev_timer_set (&once->to, timeout, 0.);
1051	ev_timer_start (&once->to);	1592	ev_timer_start (EV_A_ &once->to);
1052	}	1593	}
1053	}	1594	}
1054	}	1595	}
1055		1596
1056	/*****************************************************************************/
1057
1058	#if 0
1059
1060	struct ev_io wio;
1061
1062	static void
1063	sin_cb (struct ev_io *w, int revents)
1064	{
1065	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1066	}
1067
1068	static void
1069	ocb (struct ev_timer *w, int revents)
1070	{
1071	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1072	ev_timer_stop (w);
1073	ev_timer_start (w);
1074	}
1075
1076	static void
1077	scb (struct ev_signal *w, int revents)
1078	{
1079	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1080	ev_io_stop (&wio);
1081	ev_io_start (&wio);
1082	}
1083
1084	static void
1085	gcb (struct ev_signal *w, int revents)
1086	{
1087	fprintf (stderr, "generic %x\n", revents);
1088
1089	}
1090
1091	int main (void)
1092	{
1093	ev_init (0);
1094
1095	ev_io_init (&wio, sin_cb, 0, EV_READ);
1096	ev_io_start (&wio);
1097
1098	struct ev_timer t[10000];
1099
1100	#if 0
1101	int i;
1102	for (i = 0; i < 10000; ++i)
1103	{
1104	struct ev_timer *w = t + i;
1105	ev_watcher_init (w, ocb, i);
1106	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1107	ev_timer_start (w);
1108	if (drand48 () < 0.5)
1109	ev_timer_stop (w);
1110	}
1111	#endif
1112
1113	struct ev_timer t1;
1114	ev_timer_init (&t1, ocb, 5, 10);
1115	ev_timer_start (&t1);
1116
1117	struct ev_signal sig;
1118	ev_signal_init (&sig, scb, SIGQUIT);
1119	ev_signal_start (&sig);
1120
1121	struct ev_check cw;
1122	ev_check_init (&cw, gcb);
1123	ev_check_start (&cw);
1124
1125	struct ev_idle iw;
1126	ev_idle_init (&iw, gcb);
1127	ev_idle_start (&iw);
1128
1129	ev_loop (0);
1130
1131	return 0;
1132	}
1133
1134	#endif
1135
1136
1137
1138

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Comparing libev/ev.c (file contents): Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs. Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs.
Revision 1.85 by root, Sat Nov 10 03:13:50 2007 UTC