[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 1.84 by root, Fri Nov 9 23:04:35 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
30	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
31	#endif	55	#endif
32		56
33	#include <math.h>	57	#include <math.h>
34	#include <stdlib.h>	58	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	59	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	60	#include <stddef.h>
39		61
40	#include <stdio.h>	62	#include <stdio.h>
41		63
42	#include <assert.h>	64	#include <assert.h>
43	#include <errno.h>	65	#include <errno.h>
44	#include <sys/types.h>	66	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	67	#include <time.h>
48		68
		69	#include <signal.h>
		70
		71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
		74	# include <sys/wait.h>
		75	#endif
		76	/**/
		77
49	#ifndef EV_USE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	80	#endif
54		81
55	#ifndef EV_USE_SELECT	82	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	83	# define EV_USE_SELECT 1
57	#endif	84	#endif
58		85
		86	#ifndef EV_USE_POLL
		87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		88	#endif
		89
59	#ifndef EV_USE_EPOLL	90	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	91	# define EV_USE_EPOLL 0
61	#endif	92	#endif
62		93
		94	#ifndef EV_USE_KQUEUE
		95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
		105	# endif
		106	#endif
		107
		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	ev_tstamp
		277	ev_now (EV_P)
		278	{
		279	return rt_now;
		280	}
		281
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	282	#define array_roundsize(type,n) ((n) \| 4 & ~3)
123		283
124	#define array_needsize(base,cur,cnt,init) \	284	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	285	if (expect_false ((cnt) > cur)) \
126	{ \	286	{ \
127	int newcnt = cur; \	287	int newcnt = cur; \
128	do \	288	do \
129	{ \	289	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	290	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	291	} \
132	while ((cnt) > newcnt); \	292	while ((cnt) > newcnt); \
133	\	293	\
134	base = realloc (base, sizeof (base) (newcnt)); \	294	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	295	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	296	cur = newcnt; \
137	}	297	}
		298
		299	#define array_slim(type,stem) \
		300	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		301	{ \
		302	stem ## max = array_roundsize (stem ## cnt >> 1); \
		303	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		305	}
		306
		307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		309	#define array_free_microshit(stem) \
		310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		311
		312	#define array_free(stem, idx) \
		313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		314
139	/*****************************************************************************/	315	/*****************************************************************************/
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		316
150	static void	317	static void
151	anfds_init (ANFD *base, int count)	318	anfds_init (ANFD *base, int count)
152	{	319	{
153	while (count--)	320	while (count--)
154	{	321	{
155	base->head = 0;	322	base->head = 0;
156	base->events = EV_NONE;	323	base->events = EV_NONE;
		324	base->reify = 0;
		325
157	++base;	326	++base;
158	}	327	}
159	}	328	}
160		329
161	typedef struct	330	void
		331	ev_feed_event (EV_P_ void *w, int revents)
162	{	332	{
163	W w;	333	W w_ = (W)w;
164	int events;
165	} ANPENDING;
166		334
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void
171	event (W w, int events)
172	{
173	if (w->pending)	335	if (w_->pending)
174	{	336	{
175	pendings [w->pending - 1].events \|= events;	337	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
176	return;	338	return;
177	}	339	}
178		340
179	w->pending = ++pendingcnt;	341	w_->pending = ++pendingcnt [ABSPRI (w_)];
180	array_needsize (pendings, pendingmax, pendingcnt, );	342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
181	pendings [pendingcnt - 1].w = w;	343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
182	pendings [pendingcnt - 1].events = events;	344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
183	}	345	}
184		346
185	static void	347	static void
186	queue_events (W *events, int eventcnt, int type)	348	queue_events (EV_P_ W *events, int eventcnt, int type)
187	{	349	{
188	int i;	350	int i;
189		351
190	for (i = 0; i < eventcnt; ++i)	352	for (i = 0; i < eventcnt; ++i)
191	event (events [i], type);	353	ev_feed_event (EV_A_ events [i], type);
192	}	354	}
193		355
194	static void	356	inline void
195	fd_event (int fd, int events)	357	fd_event (EV_P_ int fd, int revents)
196	{	358	{
197	ANFD *anfd = anfds + fd;	359	ANFD *anfd = anfds + fd;
198	struct ev_io *w;	360	struct ev_io *w;
199		361
200	for (w = anfd->head; w; w = w->next)	362	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
201	{	363	{
202	int ev = w->events & events;	364	int ev = w->events & revents;
203		365
204	if (ev)	366	if (ev)
205	event ((W)w, ev);	367	ev_feed_event (EV_A_ (W)w, ev);
206	}	368	}
		369	}
		370
		371	void
		372	ev_feed_fd_event (EV_P_ int fd, int revents)
		373	{
		374	fd_event (EV_A_ fd, revents);
207	}	375	}
208		376
209	/*****************************************************************************/	377	/*****************************************************************************/
210		378
211	static int *fdchanges;
212	static int fdchangemax, fdchangecnt;
213
214	static void	379	static void
215	fd_reify (void)	380	fd_reify (EV_P)
216	{	381	{
217	int i;	382	int i;
218		383
219	for (i = 0; i < fdchangecnt; ++i)	384	for (i = 0; i < fdchangecnt; ++i)
220	{	385	{
…		…
222	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
223	struct ev_io *w;	388	struct ev_io *w;
224		389
225	int events = 0;	390	int events = 0;
226		391
227	for (w = anfd->head; w; w = w->next)	392	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
228	events \|= w->events;	393	events \|= w->events;
229		394
230	anfd->events &= ~EV_REIFY;	395	anfd->reify = 0;
231		396
232	if (anfd->events != events)
233	{
234	method_modify (fd, anfd->events, events);	397	method_modify (EV_A_ fd, anfd->events, events);
235	anfd->events = events;	398	anfd->events = events;
236	}
237	}	399	}
238		400
239	fdchangecnt = 0;	401	fdchangecnt = 0;
240	}	402	}
241		403
242	static void	404	static void
243	fd_change (int fd)	405	fd_change (EV_P_ int fd)
244	{	406	{
245	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	407	if (anfds [fd].reify)
246	return;	408	return;
247		409
248	anfds [fd].events \|= EV_REIFY;	410	anfds [fd].reify = 1;
249		411
250	++fdchangecnt;	412	++fdchangecnt;
251	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
252	fdchanges [fdchangecnt - 1] = fd;	414	fdchanges [fdchangecnt - 1] = fd;
253	}	415	}
254		416
		417	static void
		418	fd_kill (EV_P_ int fd)
		419	{
		420	struct ev_io *w;
		421
		422	while ((w = (struct ev_io *)anfds [fd].head))
		423	{
		424	ev_io_stop (EV_A_ w);
		425	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		426	}
		427	}
		428
		429	static int
		430	fd_valid (int fd)
		431	{
		432	#ifdef WIN32
		433	return !!win32_get_osfhandle (fd);
		434	#else
		435	return fcntl (fd, F_GETFD) != -1;
		436	#endif
		437	}
		438
255	/* called on EBADF to verify fds */	439	/* called on EBADF to verify fds */
256	static void	440	static void
257	fd_recheck (void)	441	fd_ebadf (EV_P)
258	{	442	{
259	int fd;	443	int fd;
260		444
261	for (fd = 0; fd < anfdmax; ++fd)	445	for (fd = 0; fd < anfdmax; ++fd)
262	if (anfds [fd].events)	446	if (anfds [fd].events)
263	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	447	if (!fd_valid (fd) == -1 && errno == EBADF)
264	while (anfds [fd].head)	448	fd_kill (EV_A_ fd);
		449	}
		450
		451	/* called on ENOMEM in select/poll to kill some fds and retry */
		452	static void
		453	fd_enomem (EV_P)
		454	{
		455	int fd;
		456
		457	for (fd = anfdmax; fd--; )
		458	if (anfds [fd].events)
265	{	459	{
266	ev_io_stop (anfds [fd].head);	460	fd_kill (EV_A_ fd);
267	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	461	return;
268	}	462	}
		463	}
		464
		465	/* usually called after fork if method needs to re-arm all fds from scratch */
		466	static void
		467	fd_rearm_all (EV_P)
		468	{
		469	int fd;
		470
		471	/* this should be highly optimised to not do anything but set a flag */
		472	for (fd = 0; fd < anfdmax; ++fd)
		473	if (anfds [fd].events)
		474	{
		475	anfds [fd].events = 0;
		476	fd_change (EV_A_ fd);
		477	}
269	}	478	}
270		479
271	/*****************************************************************************/	480	/*****************************************************************************/
272		481
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	482	static void
280	upheap (WT *timers, int k)	483	upheap (WT *heap, int k)
281	{	484	{
282	WT w = timers [k];	485	WT w = heap [k];
283		486
284	while (k && timers [k >> 1]->at > w->at)	487	while (k && heap [k >> 1]->at > w->at)
285	{	488	{
286	timers [k] = timers [k >> 1];	489	heap [k] = heap [k >> 1];
287	timers [k]->active = k + 1;	490	((W)heap [k])->active = k + 1;
288	k >>= 1;	491	k >>= 1;
289	}	492	}
290		493
291	timers [k] = w;	494	heap [k] = w;
292	timers [k]->active = k + 1;	495	((W)heap [k])->active = k + 1;
293		496
294	}	497	}
295		498
296	static void	499	static void
297	downheap (WT *timers, int N, int k)	500	downheap (WT *heap, int N, int k)
298	{	501	{
299	WT w = timers [k];	502	WT w = heap [k];
300		503
301	while (k < (N >> 1))	504	while (k < (N >> 1))
302	{	505	{
303	int j = k << 1;	506	int j = k << 1;
304		507
305	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	508	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
306	++j;	509	++j;
307		510
308	if (w->at <= timers [j]->at)	511	if (w->at <= heap [j]->at)
309	break;	512	break;
310		513
311	timers [k] = timers [j];	514	heap [k] = heap [j];
312	timers [k]->active = k + 1;	515	((W)heap [k])->active = k + 1;
313	k = j;	516	k = j;
314	}	517	}
315		518
316	timers [k] = w;	519	heap [k] = w;
317	timers [k]->active = k + 1;	520	((W)heap [k])->active = k + 1;
		521	}
		522
		523	inline void
		524	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		525	{
		526	ev_tstamp old_at = heap [k]->at;
		527	heap [k]->at = at;
		528
		529	if (old_at < at)
		530	downheap (heap, N, k);
		531	else
		532	upheap (heap, k);
318	}	533	}
319		534
320	/*****************************************************************************/	535	/*****************************************************************************/
321		536
322	typedef struct	537	typedef struct
323	{	538	{
324	struct ev_signal *head;	539	WL head;
325	sig_atomic_t gotsig;	540	sig_atomic_t volatile gotsig;
326	} ANSIG;	541	} ANSIG;
327		542
328	static ANSIG *signals;	543	static ANSIG *signals;
329	static int signalmax;	544	static int signalmax;
330		545
331	static int sigpipe [2];	546	static int sigpipe [2];
332	static sig_atomic_t gotsig;	547	static sig_atomic_t volatile gotsig;
333	static struct ev_io sigev;	548	static struct ev_io sigev;
334		549
335	static void	550	static void
336	signals_init (ANSIG *base, int count)	551	signals_init (ANSIG *base, int count)
337	{	552	{
338	while (count--)	553	while (count--)
339	{	554	{
340	base->head = 0;	555	base->head = 0;
341	base->gotsig = 0;	556	base->gotsig = 0;
		557
342	++base;	558	++base;
343	}	559	}
344	}	560	}
345		561
346	static void	562	static void
347	sighandler (int signum)	563	sighandler (int signum)
348	{	564	{
		565	#if WIN32
		566	signal (signum, sighandler);
		567	#endif
		568
349	signals [signum - 1].gotsig = 1;	569	signals [signum - 1].gotsig = 1;
350		570
351	if (!gotsig)	571	if (!gotsig)
352	{	572	{
		573	int old_errno = errno;
353	gotsig = 1;	574	gotsig = 1;
		575	#ifdef WIN32
		576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		577	#else
354	write (sigpipe [1], &gotsig, 1);	578	write (sigpipe [1], &signum, 1);
		579	#endif
		580	errno = old_errno;
355	}	581	}
356	}	582	}
357		583
		584	void
		585	ev_feed_signal_event (EV_P_ int signum)
		586	{
		587	WL w;
		588
		589	#if EV_MULTIPLICITY
		590	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		591	#endif
		592
		593	--signum;
		594
		595	if (signum < 0 \|\| signum >= signalmax)
		596	return;
		597
		598	signals [signum].gotsig = 0;
		599
		600	for (w = signals [signum].head; w; w = w->next)
		601	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		602	}
		603
358	static void	604	static void
359	sigcb (struct ev_io *iow, int revents)	605	sigcb (EV_P_ struct ev_io *iow, int revents)
360	{	606	{
361	struct ev_signal *w;
362	int sig;	607	int signum;
363		608
		609	#ifdef WIN32
		610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		611	#else
		612	read (sigpipe [0], &revents, 1);
		613	#endif
364	gotsig = 0;	614	gotsig = 0;
365	read (sigpipe [0], &revents, 1);
366		615
367	for (sig = signalmax; sig--; )	616	for (signum = signalmax; signum--; )
368	if (signals [sig].gotsig)	617	if (signals [signum].gotsig)
369	{	618	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	}	619	}
376		620
377	static void	621	static void
378	siginit (void)	622	siginit (EV_P)
379	{	623	{
		624	#ifndef WIN32
380	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	625	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
381	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	626	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
382		627
383	/* rather than sort out wether we really need nb, set it */	628	/* rather than sort out wether we really need nb, set it */
384	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	629	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
385	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	630	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		631	#endif
386		632
387	ev_io_set (&sigev, sigpipe [0], EV_READ);	633	ev_io_set (&sigev, sigpipe [0], EV_READ);
388	ev_io_start (&sigev);	634	ev_io_start (EV_A_ &sigev);
		635	ev_unref (EV_A); /* child watcher should not keep loop alive */
389	}	636	}
390		637
391	/*****************************************************************************/	638	/*****************************************************************************/
392		639
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];	640	static struct ev_child *childs [PID_HASHSIZE];
		641
		642	#ifndef WIN32
		643
405	static struct ev_signal childev;	644	static struct ev_signal childev;
406		645
407	#ifndef WCONTINUED	646	#ifndef WCONTINUED
408	# define WCONTINUED 0	647	# define WCONTINUED 0
409	#endif	648	#endif
410		649
411	static void	650	static void
412	childcb (struct ev_signal *sw, int revents)	651	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
413	{	652	{
414	struct ev_child *w;	653	struct ev_child *w;
		654
		655	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		656	if (w->pid == pid \|\| !w->pid)
		657	{
		658	ev_priority (w) = ev_priority (sw); /* need to do it now */
		659	w->rpid = pid;
		660	w->rstatus = status;
		661	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		662	}
		663	}
		664
		665	static void
		666	childcb (EV_P_ struct ev_signal *sw, int revents)
		667	{
415	int pid, status;	668	int pid, status;
416		669
417	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	670	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
418	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	671	{
419	if (w->pid == pid \|\| w->pid == -1)	672	/* make sure we are called again until all childs have been reaped */
420	{	673	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
421	w->status = status;	674
422	event ((W)w, EV_CHILD);	675	child_reap (EV_A_ sw, pid, pid, status);
423	}	676	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		677	}
424	}	678	}
		679
		680	#endif
425		681
426	/*****************************************************************************/	682	/*****************************************************************************/
427		683
		684	#if EV_USE_KQUEUE
		685	# include "ev_kqueue.c"
		686	#endif
428	#if EV_USE_EPOLL	687	#if EV_USE_EPOLL
429	# include "ev_epoll.c"	688	# include "ev_epoll.c"
430	#endif	689	#endif
		690	#if EV_USE_POLL
		691	# include "ev_poll.c"
		692	#endif
431	#if EV_USE_SELECT	693	#if EV_USE_SELECT
432	# include "ev_select.c"	694	# include "ev_select.c"
433	#endif	695	#endif
434		696
435	int	697	int
…		…
442	ev_version_minor (void)	704	ev_version_minor (void)
443	{	705	{
444	return EV_VERSION_MINOR;	706	return EV_VERSION_MINOR;
445	}	707	}
446		708
447	int ev_init (int flags)	709	/* return true if we are running with elevated privileges and should ignore env variables */
		710	static int
		711	enable_secure (void)
448	{	712	{
		713	#ifdef WIN32
		714	return 0;
		715	#else
		716	return getuid () != geteuid ()
		717	\|\| getgid () != getegid ();
		718	#endif
		719	}
		720
		721	int
		722	ev_method (EV_P)
		723	{
		724	return method;
		725	}
		726
		727	static void
		728	loop_init (EV_P_ int methods)
		729	{
449	if (!ev_method)	730	if (!method)
450	{	731	{
451	#if EV_USE_MONOTONIC	732	#if EV_USE_MONOTONIC
452	{	733	{
453	struct timespec ts;	734	struct timespec ts;
454	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	735	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
455	have_monotonic = 1;	736	have_monotonic = 1;
456	}	737	}
457	#endif	738	#endif
458		739
459	ev_now = ev_time ();	740	rt_now = ev_time ();
460	now = get_clock ();	741	mn_now = get_clock ();
		742	now_floor = mn_now;
461	diff = ev_now - now;	743	rtmn_diff = rt_now - mn_now;
462		744
463	if (pipe (sigpipe))	745	if (methods == EVMETHOD_AUTO)
464	return 0;	746	if (!enable_secure () && getenv ("LIBEV_METHODS"))
465		747	methods = atoi (getenv ("LIBEV_METHODS"));
		748	else
466	ev_method = EVMETHOD_NONE;	749	methods = EVMETHOD_ANY;
		750
		751	method = 0;
		752	#if EV_USE_WIN32
		753	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		754	#endif
		755	#if EV_USE_KQUEUE
		756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		757	#endif
467	#if EV_USE_EPOLL	758	#if EV_USE_EPOLL
468	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		760	#endif
		761	#if EV_USE_POLL
		762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
469	#endif	763	#endif
470	#if EV_USE_SELECT	764	#if EV_USE_SELECT
471	if (ev_method == EVMETHOD_NONE) select_init (flags);	765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
472	#endif	766	#endif
473		767
		768	ev_init (&sigev, sigcb);
		769	ev_set_priority (&sigev, EV_MAXPRI);
		770	}
		771	}
		772
		773	void
		774	loop_destroy (EV_P)
		775	{
		776	int i;
		777
		778	#if EV_USE_WIN32
		779	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		780	#endif
		781	#if EV_USE_KQUEUE
		782	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		783	#endif
		784	#if EV_USE_EPOLL
		785	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		786	#endif
		787	#if EV_USE_POLL
		788	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		789	#endif
		790	#if EV_USE_SELECT
		791	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		792	#endif
		793
		794	for (i = NUMPRI; i--; )
		795	array_free (pending, [i]);
		796
		797	/* have to use the microsoft-never-gets-it-right macro */
		798	array_free_microshit (fdchange);
		799	array_free_microshit (timer);
		800	array_free_microshit (periodic);
		801	array_free_microshit (idle);
		802	array_free_microshit (prepare);
		803	array_free_microshit (check);
		804
		805	method = 0;
		806	}
		807
		808	static void
		809	loop_fork (EV_P)
		810	{
		811	#if EV_USE_EPOLL
		812	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		813	#endif
		814	#if EV_USE_KQUEUE
		815	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		816	#endif
		817
		818	if (ev_is_active (&sigev))
		819	{
		820	/* default loop */
		821
		822	ev_ref (EV_A);
		823	ev_io_stop (EV_A_ &sigev);
		824	close (sigpipe [0]);
		825	close (sigpipe [1]);
		826
		827	while (pipe (sigpipe))
		828	syserr ("(libev) error creating pipe");
		829
		830	siginit (EV_A);
		831	}
		832
		833	postfork = 0;
		834	}
		835
		836	#if EV_MULTIPLICITY
		837	struct ev_loop *
		838	ev_loop_new (int methods)
		839	{
		840	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		841
		842	memset (loop, 0, sizeof (struct ev_loop));
		843
		844	loop_init (EV_A_ methods);
		845
		846	if (ev_method (EV_A))
		847	return loop;
		848
		849	return 0;
		850	}
		851
		852	void
		853	ev_loop_destroy (EV_P)
		854	{
		855	loop_destroy (EV_A);
		856	ev_free (loop);
		857	}
		858
		859	void
		860	ev_loop_fork (EV_P)
		861	{
		862	postfork = 1;
		863	}
		864
		865	#endif
		866
		867	#if EV_MULTIPLICITY
		868	struct ev_loop *
		869	#else
		870	int
		871	#endif
		872	ev_default_loop (int methods)
		873	{
		874	if (sigpipe [0] == sigpipe [1])
		875	if (pipe (sigpipe))
		876	return 0;
		877
		878	if (!default_loop)
		879	{
		880	#if EV_MULTIPLICITY
		881	struct ev_loop *loop = default_loop = &default_loop_struct;
		882	#else
		883	default_loop = 1;
		884	#endif
		885
		886	loop_init (EV_A_ methods);
		887
474	if (ev_method)	888	if (ev_method (EV_A))
475	{	889	{
476	ev_watcher_init (&sigev, sigcb);
477	siginit ();	890	siginit (EV_A);
478		891
		892	#ifndef WIN32
479	ev_signal_init (&childev, childcb, SIGCHLD);	893	ev_signal_init (&childev, childcb, SIGCHLD);
		894	ev_set_priority (&childev, EV_MAXPRI);
480	ev_signal_start (&childev);	895	ev_signal_start (EV_A_ &childev);
		896	ev_unref (EV_A); /* child watcher should not keep loop alive */
		897	#endif
481	}	898	}
		899	else
		900	default_loop = 0;
482	}	901	}
483		902
484	return ev_method;	903	return default_loop;
		904	}
		905
		906	void
		907	ev_default_destroy (void)
		908	{
		909	#if EV_MULTIPLICITY
		910	struct ev_loop *loop = default_loop;
		911	#endif
		912
		913	#ifndef WIN32
		914	ev_ref (EV_A); /* child watcher */
		915	ev_signal_stop (EV_A_ &childev);
		916	#endif
		917
		918	ev_ref (EV_A); /* signal watcher */
		919	ev_io_stop (EV_A_ &sigev);
		920
		921	close (sigpipe [0]); sigpipe [0] = 0;
		922	close (sigpipe [1]); sigpipe [1] = 0;
		923
		924	loop_destroy (EV_A);
		925	}
		926
		927	void
		928	ev_default_fork (void)
		929	{
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *loop = default_loop;
		932	#endif
		933
		934	if (method)
		935	postfork = 1;
485	}	936	}
486		937
487	/*****************************************************************************/	938	/*****************************************************************************/
488		939
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	940	static int
		941	any_pending (EV_P)
		942	{
		943	int pri;
		944
		945	for (pri = NUMPRI; pri--; )
		946	if (pendingcnt [pri])
		947	return 1;
		948
		949	return 0;
		950	}
		951
		952	static void
519	call_pending (void)	953	call_pending (EV_P)
520	{	954	{
		955	int pri;
		956
		957	for (pri = NUMPRI; pri--; )
521	while (pendingcnt)	958	while (pendingcnt [pri])
522	{	959	{
523	ANPENDING *p = pendings + --pendingcnt;	960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
524		961
525	if (p->w)	962	if (p->w)
526	{	963	{
527	p->w->pending = 0;	964	p->w->pending = 0;
528	p->w->cb (p->w, p->events);	965	EV_CB_INVOKE (p->w, p->events);
529	}	966	}
530	}	967	}
531	}	968	}
532		969
533	static void	970	static void
534	timers_reify (void)	971	timers_reify (EV_P)
535	{	972	{
536	while (timercnt && timers [0]->at <= now)	973	while (timercnt && ((WT)timers [0])->at <= mn_now)
537	{	974	{
538	struct ev_timer *w = timers [0];	975	struct ev_timer *w = timers [0];
		976
		977	assert (("inactive timer on timer heap detected", ev_is_active (w)));
539		978
540	/* first reschedule or stop timer */	979	/* first reschedule or stop timer */
541	if (w->repeat)	980	if (w->repeat)
542	{	981	{
		982	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
543	w->at = now + w->repeat;	983	((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);	984	downheap ((WT *)timers, timercnt, 0);
546	}	985	}
547	else	986	else
548	ev_timer_stop (w); /* nonrepeating: stop timer */	987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
549		988
550	event ((W)w, EV_TIMEOUT);	989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
551	}	990	}
552	}	991	}
553		992
554	static void	993	static void
555	periodics_reify (void)	994	periodics_reify (EV_P)
556	{	995	{
557	while (periodiccnt && periodics [0]->at <= ev_now)	996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
558	{	997	{
559	struct ev_periodic *w = periodics [0];	998	struct ev_periodic *w = periodics [0];
560		999
		1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1001
561	/* first reschedule or stop timer */	1002	/* first reschedule or stop timer */
562	if (w->interval)	1003	if (w->reschedule_cb)
563	{	1004	{
		1005	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		1006
		1007	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		1008	downheap ((WT *)periodics, periodiccnt, 0);
		1009	}
		1010	else if (w->interval)
		1011	{
564	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1012	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
565	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1013	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
566	downheap ((WT *)periodics, periodiccnt, 0);	1014	downheap ((WT *)periodics, periodiccnt, 0);
567	}	1015	}
568	else	1016	else
569	ev_periodic_stop (w); /* nonrepeating: stop timer */	1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
570		1018
571	event ((W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
572	}	1020	}
573	}	1021	}
574		1022
575	static void	1023	static void
576	periodics_reschedule (ev_tstamp diff)	1024	periodics_reschedule (EV_P)
577	{	1025	{
578	int i;	1026	int i;
579		1027
580	/* adjust periodics after time jump */	1028	/* adjust periodics after time jump */
581	for (i = 0; i < periodiccnt; ++i)	1029	for (i = 0; i < periodiccnt; ++i)
582	{	1030	{
583	struct ev_periodic *w = periodics [i];	1031	struct ev_periodic *w = periodics [i];
584		1032
		1033	if (w->reschedule_cb)
		1034	((WT)w)->at = w->reschedule_cb (w, rt_now);
585	if (w->interval)	1035	else if (w->interval)
		1036	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1037	}
		1038
		1039	/* now rebuild the heap */
		1040	for (i = periodiccnt >> 1; i--; )
		1041	downheap ((WT *)periodics, periodiccnt, i);
		1042	}
		1043
		1044	inline int
		1045	time_update_monotonic (EV_P)
		1046	{
		1047	mn_now = get_clock ();
		1048
		1049	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1050	{
		1051	rt_now = rtmn_diff + mn_now;
		1052	return 0;
		1053	}
		1054	else
		1055	{
		1056	now_floor = mn_now;
		1057	rt_now = ev_time ();
		1058	return 1;
		1059	}
		1060	}
		1061
		1062	static void
		1063	time_update (EV_P)
		1064	{
		1065	int i;
		1066
		1067	#if EV_USE_MONOTONIC
		1068	if (expect_true (have_monotonic))
		1069	{
		1070	if (time_update_monotonic (EV_A))
586	{	1071	{
587	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1072	ev_tstamp odiff = rtmn_diff;
588		1073
589	if (fabs (diff) >= 1e-4)	1074	for (i = 4; --i; ) /* loop a few times, before making important decisions */
590	{	1075	{
591	ev_periodic_stop (w);	1076	rtmn_diff = rt_now - mn_now;
592	ev_periodic_start (w);
593		1077
594	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1078	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1079	return; /* all is well */
		1080
		1081	rt_now = ev_time ();
		1082	mn_now = get_clock ();
		1083	now_floor = mn_now;
595	}	1084	}
		1085
		1086	periodics_reschedule (EV_A);
		1087	/* no timer adjustment, as the monotonic clock doesn't jump */
		1088	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
596	}	1089	}
597	}	1090	}
598	}	1091	else
599		1092	#endif
600	static void	1093	{
601	time_update (void)
602	{
603	int i;
604
605	ev_now = ev_time ();	1094	rt_now = ev_time ();
606		1095
607	if (have_monotonic)	1096	if (expect_false (mn_now > rt_now \|\| mn_now < 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	{	1097	{
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);	1098	periodics_reschedule (EV_A);
630		1099
631	/* adjust timers. this is easy, as the offset is the same for all */	1100	/* adjust timers. this is easy, as the offset is the same for all */
632	for (i = 0; i < timercnt; ++i)	1101	for (i = 0; i < timercnt; ++i)
633	timers [i]->at += diff;	1102	((WT)timers [i])->at += rt_now - mn_now;
634	}	1103	}
635		1104
636	now = ev_now;	1105	mn_now = rt_now;
637	}	1106	}
638	}	1107	}
639		1108
640	int ev_loop_done;	1109	void
		1110	ev_ref (EV_P)
		1111	{
		1112	++activecnt;
		1113	}
641		1114
		1115	void
		1116	ev_unref (EV_P)
		1117	{
		1118	--activecnt;
		1119	}
		1120
		1121	static int loop_done;
		1122
		1123	void
642	void ev_loop (int flags)	1124	ev_loop (EV_P_ int flags)
643	{	1125	{
644	double block;	1126	double block;
645	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1127	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
646		1128
647	do	1129	do
648	{	1130	{
649	/* queue check watchers (and execute them) */	1131	/* queue check watchers (and execute them) */
650	if (preparecnt)	1132	if (expect_false (preparecnt))
651	{	1133	{
652	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
653	call_pending ();	1135	call_pending (EV_A);
654	}	1136	}
655		1137
		1138	/* we might have forked, so reify kernel state if necessary */
		1139	if (expect_false (postfork))
		1140	loop_fork (EV_A);
		1141
656	/* update fd-related kernel structures */	1142	/* update fd-related kernel structures */
657	fd_reify ();	1143	fd_reify (EV_A);
658		1144
659	/* calculate blocking time */	1145	/* calculate blocking time */
660		1146
661	/* we only need this for !monotonic clockor timers, but as we basically	1147	/* we only need this for !monotonic clock or timers, but as we basically
662	always have timers, we just calculate it always */	1148	always have timers, we just calculate it always */
		1149	#if EV_USE_MONOTONIC
		1150	if (expect_true (have_monotonic))
		1151	time_update_monotonic (EV_A);
		1152	else
		1153	#endif
		1154	{
663	ev_now = ev_time ();	1155	rt_now = ev_time ();
		1156	mn_now = rt_now;
		1157	}
664		1158
665	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1159	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
666	block = 0.;	1160	block = 0.;
667	else	1161	else
668	{	1162	{
669	block = MAX_BLOCKTIME;	1163	block = MAX_BLOCKTIME;
670		1164
671	if (timercnt)	1165	if (timercnt)
672	{	1166	{
673	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
674	if (block > to) block = to;	1168	if (block > to) block = to;
675	}	1169	}
676		1170
677	if (periodiccnt)	1171	if (periodiccnt)
678	{	1172	{
679	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
680	if (block > to) block = to;	1174	if (block > to) block = to;
681	}	1175	}
682		1176
683	if (block < 0.) block = 0.;	1177	if (block < 0.) block = 0.;
684	}	1178	}
685		1179
686	method_poll (block);	1180	method_poll (EV_A_ block);
687		1181
688	/* update ev_now, do magic */	1182	/* update rt_now, do magic */
689	time_update ();	1183	time_update (EV_A);
690		1184
691	/* queue pending timers and reschedule them */	1185	/* queue pending timers and reschedule them */
692	timers_reify (); /* relative timers called last */	1186	timers_reify (EV_A); /* relative timers called last */
693	periodics_reify (); /* absolute timers called first */	1187	periodics_reify (EV_A); /* absolute timers called first */
694		1188
695	/* queue idle watchers unless io or timers are pending */	1189	/* queue idle watchers unless io or timers are pending */
696	if (!pendingcnt)	1190	if (idlecnt && !any_pending (EV_A))
697	queue_events ((W *)idles, idlecnt, EV_IDLE);	1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
698		1192
699	/* queue check watchers, to be executed first */	1193	/* queue check watchers, to be executed first */
700	if (checkcnt)	1194	if (checkcnt)
701	queue_events ((W *)checks, checkcnt, EV_CHECK);	1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
702		1196
703	call_pending ();	1197	call_pending (EV_A);
704	}	1198	}
705	while (!ev_loop_done);	1199	while (activecnt && !loop_done);
706		1200
707	if (ev_loop_done != 2)	1201	if (loop_done != 2)
708	ev_loop_done = 0;	1202	loop_done = 0;
		1203	}
		1204
		1205	void
		1206	ev_unloop (EV_P_ int how)
		1207	{
		1208	loop_done = how;
709	}	1209	}
710		1210
711	/*****************************************************************************/	1211	/*****************************************************************************/
712		1212
713	static void	1213	inline void
714	wlist_add (WL *head, WL elem)	1214	wlist_add (WL *head, WL elem)
715	{	1215	{
716	elem->next = *head;	1216	elem->next = *head;
717	*head = elem;	1217	*head = elem;
718	}	1218	}
719		1219
720	static void	1220	inline void
721	wlist_del (WL *head, WL elem)	1221	wlist_del (WL *head, WL elem)
722	{	1222	{
723	while (*head)	1223	while (*head)
724	{	1224	{
725	if (*head == elem)	1225	if (*head == elem)
…		…
730		1230
731	head = &(*head)->next;	1231	head = &(*head)->next;
732	}	1232	}
733	}	1233	}
734		1234
735	static void	1235	inline void
736	ev_clear (W w)	1236	ev_clear_pending (EV_P_ W w)
737	{	1237	{
738	if (w->pending)	1238	if (w->pending)
739	{	1239	{
740	pendings [w->pending - 1].w = 0;	1240	pendings [ABSPRI (w)][w->pending - 1].w = 0;
741	w->pending = 0;	1241	w->pending = 0;
742	}	1242	}
743	}	1243	}
744		1244
745	static void	1245	inline void
746	ev_start (W w, int active)	1246	ev_start (EV_P_ W w, int active)
747	{	1247	{
		1248	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1249	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1250
748	w->active = active;	1251	w->active = active;
		1252	ev_ref (EV_A);
749	}	1253	}
750		1254
751	static void	1255	inline void
752	ev_stop (W w)	1256	ev_stop (EV_P_ W w)
753	{	1257	{
		1258	ev_unref (EV_A);
754	w->active = 0;	1259	w->active = 0;
755	}	1260	}
756		1261
757	/*****************************************************************************/	1262	/*****************************************************************************/
758		1263
759	void	1264	void
760	ev_io_start (struct ev_io *w)	1265	ev_io_start (EV_P_ struct ev_io *w)
761	{	1266	{
		1267	int fd = w->fd;
		1268
762	if (ev_is_active (w))	1269	if (ev_is_active (w))
763	return;	1270	return;
764		1271
765	int fd = w->fd;	1272	assert (("ev_io_start called with negative fd", fd >= 0));
766		1273
767	ev_start ((W)w, 1);	1274	ev_start (EV_A_ (W)w, 1);
768	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1275	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
769	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1276	wlist_add ((WL *)&anfds[fd].head, (WL)w);
770		1277
771	fd_change (fd);	1278	fd_change (EV_A_ fd);
772	}	1279	}
773		1280
774	void	1281	void
775	ev_io_stop (struct ev_io *w)	1282	ev_io_stop (EV_P_ struct ev_io *w)
776	{	1283	{
777	ev_clear ((W)w);	1284	ev_clear_pending (EV_A_ (W)w);
778	if (!ev_is_active (w))	1285	if (!ev_is_active (w))
779	return;	1286	return;
780		1287
781	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1288	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
782	ev_stop ((W)w);	1289	ev_stop (EV_A_ (W)w);
783		1290
784	fd_change (w->fd);	1291	fd_change (EV_A_ w->fd);
785	}	1292	}
786		1293
787	void	1294	void
788	ev_timer_start (struct ev_timer *w)	1295	ev_timer_start (EV_P_ struct ev_timer *w)
789	{	1296	{
790	if (ev_is_active (w))	1297	if (ev_is_active (w))
791	return;	1298	return;
792		1299
793	w->at += now;	1300	((WT)w)->at += mn_now;
794		1301
795	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1302	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
796		1303
797	ev_start ((W)w, ++timercnt);	1304	ev_start (EV_A_ (W)w, ++timercnt);
798	array_needsize (timers, timermax, timercnt, );	1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
799	timers [timercnt - 1] = w;	1306	timers [timercnt - 1] = w;
800	upheap ((WT *)timers, timercnt - 1);	1307	upheap ((WT *)timers, timercnt - 1);
801	}
802		1308
		1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1310	}
		1311
803	void	1312	void
804	ev_timer_stop (struct ev_timer *w)	1313	ev_timer_stop (EV_P_ struct ev_timer *w)
805	{	1314	{
806	ev_clear ((W)w);	1315	ev_clear_pending (EV_A_ (W)w);
807	if (!ev_is_active (w))	1316	if (!ev_is_active (w))
808	return;	1317	return;
809		1318
		1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1320
810	if (w->active < timercnt--)	1321	if (((W)w)->active < timercnt--)
811	{	1322	{
812	timers [w->active - 1] = timers [timercnt];	1323	timers [((W)w)->active - 1] = timers [timercnt];
813	downheap ((WT *)timers, timercnt, w->active - 1);	1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
814	}	1325	}
815		1326
816	w->at = w->repeat;	1327	((WT)w)->at = w->repeat;
817		1328
818	ev_stop ((W)w);	1329	ev_stop (EV_A_ (W)w);
819	}	1330	}
820		1331
821	void	1332	void
822	ev_timer_again (struct ev_timer *w)	1333	ev_timer_again (EV_P_ struct ev_timer *w)
823	{	1334	{
824	if (ev_is_active (w))	1335	if (ev_is_active (w))
825	{	1336	{
826	if (w->repeat)	1337	if (w->repeat)
827	{
828	w->at = now + w->repeat;
829	downheap ((WT *)timers, timercnt, w->active - 1);	1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
830	}
831	else	1339	else
832	ev_timer_stop (w);	1340	ev_timer_stop (EV_A_ w);
833	}	1341	}
834	else if (w->repeat)	1342	else if (w->repeat)
835	ev_timer_start (w);	1343	ev_timer_start (EV_A_ w);
836	}	1344	}
837		1345
838	void	1346	void
839	ev_periodic_start (struct ev_periodic *w)	1347	ev_periodic_start (EV_P_ struct ev_periodic *w)
840	{	1348	{
841	if (ev_is_active (w))	1349	if (ev_is_active (w))
842	return;	1350	return;
843		1351
844	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1352	if (w->reschedule_cb)
845		1353	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1354	else if (w->interval)
		1355	{
		1356	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
846	/* this formula differs from the one in periodic_reify because we do not always round up */	1357	/* this formula differs from the one in periodic_reify because we do not always round up */
847	if (w->interval)
848	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1358	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1359	}
849		1360
850	ev_start ((W)w, ++periodiccnt);	1361	ev_start (EV_A_ (W)w, ++periodiccnt);
851	array_needsize (periodics, periodicmax, periodiccnt, );	1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
852	periodics [periodiccnt - 1] = w;	1363	periodics [periodiccnt - 1] = w;
853	upheap ((WT *)periodics, periodiccnt - 1);	1364	upheap ((WT *)periodics, periodiccnt - 1);
854	}
855		1365
		1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1367	}
		1368
856	void	1369	void
857	ev_periodic_stop (struct ev_periodic *w)	1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)
858	{	1371	{
859	ev_clear ((W)w);	1372	ev_clear_pending (EV_A_ (W)w);
860	if (!ev_is_active (w))	1373	if (!ev_is_active (w))
861	return;	1374	return;
862		1375
		1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1377
863	if (w->active < periodiccnt--)	1378	if (((W)w)->active < periodiccnt--)
864	{	1379	{
865	periodics [w->active - 1] = periodics [periodiccnt];	1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];
866	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
867	}	1382	}
868		1383
869	ev_stop ((W)w);	1384	ev_stop (EV_A_ (W)w);
870	}	1385	}
871		1386
872	void	1387	void
		1388	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1389	{
		1390	/* TODO: use adjustheap and recalculation */
		1391	ev_periodic_stop (EV_A_ w);
		1392	ev_periodic_start (EV_A_ w);
		1393	}
		1394
		1395	void
873	ev_signal_start (struct ev_signal *w)	1396	ev_idle_start (EV_P_ struct ev_idle *w)
874	{	1397	{
875	if (ev_is_active (w))	1398	if (ev_is_active (w))
876	return;	1399	return;
877		1400
		1401	ev_start (EV_A_ (W)w, ++idlecnt);
		1402	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1403	idles [idlecnt - 1] = w;
		1404	}
		1405
		1406	void
		1407	ev_idle_stop (EV_P_ struct ev_idle *w)
		1408	{
		1409	ev_clear_pending (EV_A_ (W)w);
		1410	if (ev_is_active (w))
		1411	return;
		1412
		1413	idles [((W)w)->active - 1] = idles [--idlecnt];
		1414	ev_stop (EV_A_ (W)w);
		1415	}
		1416
		1417	void
		1418	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1419	{
		1420	if (ev_is_active (w))
		1421	return;
		1422
		1423	ev_start (EV_A_ (W)w, ++preparecnt);
		1424	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1425	prepares [preparecnt - 1] = w;
		1426	}
		1427
		1428	void
		1429	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1430	{
		1431	ev_clear_pending (EV_A_ (W)w);
		1432	if (ev_is_active (w))
		1433	return;
		1434
		1435	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1436	ev_stop (EV_A_ (W)w);
		1437	}
		1438
		1439	void
		1440	ev_check_start (EV_P_ struct ev_check *w)
		1441	{
		1442	if (ev_is_active (w))
		1443	return;
		1444
		1445	ev_start (EV_A_ (W)w, ++checkcnt);
		1446	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1447	checks [checkcnt - 1] = w;
		1448	}
		1449
		1450	void
		1451	ev_check_stop (EV_P_ struct ev_check *w)
		1452	{
		1453	ev_clear_pending (EV_A_ (W)w);
		1454	if (ev_is_active (w))
		1455	return;
		1456
		1457	checks [((W)w)->active - 1] = checks [--checkcnt];
		1458	ev_stop (EV_A_ (W)w);
		1459	}
		1460
		1461	#ifndef SA_RESTART
		1462	# define SA_RESTART 0
		1463	#endif
		1464
		1465	void
		1466	ev_signal_start (EV_P_ struct ev_signal *w)
		1467	{
		1468	#if EV_MULTIPLICITY
		1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1470	#endif
		1471	if (ev_is_active (w))
		1472	return;
		1473
		1474	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1475
878	ev_start ((W)w, 1);	1476	ev_start (EV_A_ (W)w, 1);
879	array_needsize (signals, signalmax, w->signum, signals_init);	1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
880	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
881		1479
882	if (!w->next)	1480	if (!((WL)w)->next)
883	{	1481	{
		1482	#if WIN32
		1483	signal (w->signum, sighandler);
		1484	#else
884	struct sigaction sa;	1485	struct sigaction sa;
885	sa.sa_handler = sighandler;	1486	sa.sa_handler = sighandler;
886	sigfillset (&sa.sa_mask);	1487	sigfillset (&sa.sa_mask);
887	sa.sa_flags = 0;	1488	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
888	sigaction (w->signum, &sa, 0);	1489	sigaction (w->signum, &sa, 0);
		1490	#endif
889	}	1491	}
890	}	1492	}
891		1493
892	void	1494	void
893	ev_signal_stop (struct ev_signal *w)	1495	ev_signal_stop (EV_P_ struct ev_signal *w)
894	{	1496	{
895	ev_clear ((W)w);	1497	ev_clear_pending (EV_A_ (W)w);
896	if (!ev_is_active (w))	1498	if (!ev_is_active (w))
897	return;	1499	return;
898		1500
899	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1501	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
900	ev_stop ((W)w);	1502	ev_stop (EV_A_ (W)w);
901		1503
902	if (!signals [w->signum - 1].head)	1504	if (!signals [w->signum - 1].head)
903	signal (w->signum, SIG_DFL);	1505	signal (w->signum, SIG_DFL);
904	}	1506	}
905		1507
906	void	1508	void
907	ev_idle_start (struct ev_idle *w)	1509	ev_child_start (EV_P_ struct ev_child *w)
908	{	1510	{
		1511	#if EV_MULTIPLICITY
		1512	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1513	#endif
909	if (ev_is_active (w))	1514	if (ev_is_active (w))
910	return;	1515	return;
911		1516
912	ev_start ((W)w, ++idlecnt);	1517	ev_start (EV_A_ (W)w, 1);
913	array_needsize (idles, idlemax, idlecnt, );	1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
914	idles [idlecnt - 1] = w;
915	}	1519	}
916		1520
917	void	1521	void
918	ev_idle_stop (struct ev_idle *w)	1522	ev_child_stop (EV_P_ struct ev_child *w)
919	{	1523	{
920	ev_clear ((W)w);	1524	ev_clear_pending (EV_A_ (W)w);
921	if (ev_is_active (w))	1525	if (ev_is_active (w))
922	return;	1526	return;
923		1527
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);	1528	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	ev_stop ((W)w);	1529	ev_stop (EV_A_ (W)w);
991	}	1530	}
992		1531
993	/*****************************************************************************/	1532	/*****************************************************************************/
994		1533
995	struct ev_once	1534	struct ev_once
…		…
999	void (cb)(int revents, void arg);	1538	void (cb)(int revents, void arg);
1000	void *arg;	1539	void *arg;
1001	};	1540	};
1002		1541
1003	static void	1542	static void
1004	once_cb (struct ev_once *once, int revents)	1543	once_cb (EV_P_ struct ev_once *once, int revents)
1005	{	1544	{
1006	void (cb)(int revents, void arg) = once->cb;	1545	void (cb)(int revents, void arg) = once->cb;
1007	void *arg = once->arg;	1546	void *arg = once->arg;
1008		1547
1009	ev_io_stop (&once->io);	1548	ev_io_stop (EV_A_ &once->io);
1010	ev_timer_stop (&once->to);	1549	ev_timer_stop (EV_A_ &once->to);
1011	free (once);	1550	ev_free (once);
1012		1551
1013	cb (revents, arg);	1552	cb (revents, arg);
1014	}	1553	}
1015		1554
1016	static void	1555	static void
1017	once_cb_io (struct ev_io *w, int revents)	1556	once_cb_io (EV_P_ struct ev_io *w, int revents)
1018	{	1557	{
1019	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1558	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1020	}	1559	}
1021		1560
1022	static void	1561	static void
1023	once_cb_to (struct ev_timer *w, int revents)	1562	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1024	{	1563	{
1025	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1564	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1026	}	1565	}
1027		1566
1028	void	1567	void
1029	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1568	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1030	{	1569	{
1031	struct ev_once *once = malloc (sizeof (struct ev_once));	1570	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1032		1571
1033	if (!once)	1572	if (!once)
1034	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1573	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1035	else	1574	else
1036	{	1575	{
1037	once->cb = cb;	1576	once->cb = cb;
1038	once->arg = arg;	1577	once->arg = arg;
1039		1578
1040	ev_watcher_init (&once->io, once_cb_io);	1579	ev_init (&once->io, once_cb_io);
1041	if (fd >= 0)	1580	if (fd >= 0)
1042	{	1581	{
1043	ev_io_set (&once->io, fd, events);	1582	ev_io_set (&once->io, fd, events);
1044	ev_io_start (&once->io);	1583	ev_io_start (EV_A_ &once->io);
1045	}	1584	}
1046		1585
1047	ev_watcher_init (&once->to, once_cb_to);	1586	ev_init (&once->to, once_cb_to);
1048	if (timeout >= 0.)	1587	if (timeout >= 0.)
1049	{	1588	{
1050	ev_timer_set (&once->to, timeout, 0.);	1589	ev_timer_set (&once->to, timeout, 0.);
1051	ev_timer_start (&once->to);	1590	ev_timer_start (EV_A_ &once->to);
1052	}	1591	}
1053	}	1592	}
1054	}	1593	}
1055		1594
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 1.84 by root, Fri Nov 9 23:04:35 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 1.84 by root, Fri Nov 9 23:04:35 2007 UTC