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Comparing libev/ev.c (file contents):
Revision 1.29 by root, Thu Nov 1 08:10:03 2007 UTC vs.
Revision 1.79 by root, Fri Nov 9 15:15:20 2007 UTC

1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
…		…
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31	#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
63	#ifndef EV_USE_REALTIME	108	#ifndef EV_USE_REALTIME
64	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	109	# define EV_USE_REALTIME 1
65	#endif	110	#endif
		111
		112	/**/
		113
		114	#ifndef CLOCK_MONOTONIC
		115	# undef EV_USE_MONOTONIC
		116	# define EV_USE_MONOTONIC 0
		117	#endif
		118
		119	#ifndef CLOCK_REALTIME
		120	# undef EV_USE_REALTIME
		121	# define EV_USE_REALTIME 0
		122	#endif
		123
		124	/**/
66		125
67	#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) */
68	#define MAX_BLOCKTIME 59.731	127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
69	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		129	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
70		130
71	#include "ev.h"	131	#include "ev.h"
		132
		133	#if __GNUC__ >= 3
		134	# define expect(expr,value) __builtin_expect ((expr),(value))
		135	# define inline inline
		136	#else
		137	# define expect(expr,value) (expr)
		138	# define inline static
		139	#endif
		140
		141	#define expect_false(expr) expect ((expr) != 0, 0)
		142	#define expect_true(expr) expect ((expr) != 0, 1)
		143
		144	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		145	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
72		146
73	typedef struct ev_watcher *W;	147	typedef struct ev_watcher *W;
74	typedef struct ev_watcher_list *WL;	148	typedef struct ev_watcher_list *WL;
75	typedef struct ev_watcher_time *WT;	149	typedef struct ev_watcher_time *WT;
76		150
77	static ev_tstamp now, diff; /* monotonic clock */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
78	ev_tstamp ev_now;
79	int ev_method;
80		152
81	static int have_monotonic; /* runtime */	153	#include "ev_win32.c"
82
83	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
84	static void (*method_modify)(int fd, int oev, int nev);
85	static void (*method_poll)(ev_tstamp timeout);
86		154
87	/*****************************************************************************/	155	/*****************************************************************************/
88		156
89	ev_tstamp	157	static void (*syserr_cb)(const char *msg);
		158
		159	void ev_set_syserr_cb (void (*cb)(const char *msg))
		160	{
		161	syserr_cb = cb;
		162	}
		163
		164	static void
		165	syserr (const char *msg)
		166	{
		167	if (!msg)
		168	msg = "(libev) system error";
		169
		170	if (syserr_cb)
		171	syserr_cb (msg);
		172	else
		173	{
		174	perror (msg);
		175	abort ();
		176	}
		177	}
		178
		179	static void *(*alloc)(void *ptr, long size);
		180
		181	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		182	{
		183	alloc = cb;
		184	}
		185
		186	static void *
		187	ev_realloc (void *ptr, long size)
		188	{
		189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		190
		191	if (!ptr && size)
		192	{
		193	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		194	abort ();
		195	}
		196
		197	return ptr;
		198	}
		199
		200	#define ev_malloc(size) ev_realloc (0, (size))
		201	#define ev_free(ptr) ev_realloc ((ptr), 0)
		202
		203	/*****************************************************************************/
		204
		205	typedef struct
		206	{
		207	WL head;
		208	unsigned char events;
		209	unsigned char reify;
		210	} ANFD;
		211
		212	typedef struct
		213	{
		214	W w;
		215	int events;
		216	} ANPENDING;
		217
		218	#if EV_MULTIPLICITY
		219
		220	struct ev_loop
		221	{
		222	# define VAR(name,decl) decl;
		223	# include "ev_vars.h"
		224	};
		225	# undef VAR
		226	# include "ev_wrap.h"
		227
		228	#else
		229
		230	# define VAR(name,decl) static decl;
		231	# include "ev_vars.h"
		232	# undef VAR
		233
		234	#endif
		235
		236	/*****************************************************************************/
		237
		238	inline ev_tstamp
90	ev_time (void)	239	ev_time (void)
91	{	240	{
92	#if EV_USE_REALTIME	241	#if EV_USE_REALTIME
93	struct timespec ts;	242	struct timespec ts;
94	clock_gettime (CLOCK_REALTIME, &ts);	243	clock_gettime (CLOCK_REALTIME, &ts);
…		…
98	gettimeofday (&tv, 0);	247	gettimeofday (&tv, 0);
99	return tv.tv_sec + tv.tv_usec * 1e-6;	248	return tv.tv_sec + tv.tv_usec * 1e-6;
100	#endif	249	#endif
101	}	250	}
102		251
103	static ev_tstamp	252	inline ev_tstamp
104	get_clock (void)	253	get_clock (void)
105	{	254	{
106	#if EV_USE_MONOTONIC	255	#if EV_USE_MONOTONIC
107	if (have_monotonic)	256	if (expect_true (have_monotonic))
108	{	257	{
109	struct timespec ts;	258	struct timespec ts;
110	clock_gettime (CLOCK_MONOTONIC, &ts);	259	clock_gettime (CLOCK_MONOTONIC, &ts);
111	return ts.tv_sec + ts.tv_nsec * 1e-9;	260	return ts.tv_sec + ts.tv_nsec * 1e-9;
112	}	261	}
113	#endif	262	#endif
114		263
115	return ev_time ();	264	return ev_time ();
116	}	265	}
117		266
		267	ev_tstamp
		268	ev_now (EV_P)
		269	{
		270	return rt_now;
		271	}
		272
118	#define array_nextsize(n) (((n) << 1) | 4 & ~3)	273	#define array_roundsize(type,n) ((n) | 4 & ~3)
119	#define array_prevsize(n) (((n) >> 1) | 4 & ~3)
120		274
121	#define array_needsize(base,cur,cnt,init) \	275	#define array_needsize(type,base,cur,cnt,init) \
122	if ((cnt) > cur) \	276	if (expect_false ((cnt) > cur)) \
123	{ \	277	{ \
124	int newcnt = cur; \	278	int newcnt = cur; \
125	do \	279	do \
126	{ \	280	{ \
127	newcnt = array_nextsize (newcnt); \	281	newcnt = array_roundsize (type, newcnt << 1); \
128	} \	282	} \
129	while ((cnt) > newcnt); \	283	while ((cnt) > newcnt); \
130	\	284	\
131	base = realloc (base, sizeof (*base) * (newcnt)); \	285	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
132	init (base + cur, newcnt - cur); \	286	init (base + cur, newcnt - cur); \
133	cur = newcnt; \	287	cur = newcnt; \
134	}	288	}
		289
		290	#define array_slim(type,stem) \
		291	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		292	{ \
		293	stem ## max = array_roundsize (stem ## cnt >> 1); \
		294	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		296	}
		297
		298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		300	#define array_free_microshit(stem) \
		301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		302
		303	#define array_free(stem, idx) \
		304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
135		305
136	/*****************************************************************************/	306	/*****************************************************************************/
137
138	typedef struct
139	{
140	struct ev_io *head;
141	int events;
142	} ANFD;
143
144	static ANFD *anfds;
145	static int anfdmax;
146		307
147	static void	308	static void
148	anfds_init (ANFD *base, int count)	309	anfds_init (ANFD *base, int count)
149	{	310	{
150	while (count--)	311	while (count--)
151	{	312	{
152	base->head = 0;	313	base->head = 0;
153	base->events = EV_NONE;	314	base->events = EV_NONE;
		315	base->reify = 0;
		316
154	++base;	317	++base;
155	}	318	}
156	}	319	}
157		320
158	typedef struct	321	void
		322	ev_feed_event (EV_P_ void *w, int revents)
159	{	323	{
160	W w;	324	W w_ = (W)w;
161	int events;
162	} ANPENDING;
163		325
164	static ANPENDING *pendings;	326	if (w_->pending)
165	static int pendingmax, pendingcnt;
166
167	static void
168	event (W w, int events)
169	{
170	if (w->active)
171	{	327	{
172	w->pending = ++pendingcnt;
173	array_needsize (pendings, pendingmax, pendingcnt, );
174	pendings [pendingcnt - 1].w = w;
175	pendings [pendingcnt - 1].events = events;	328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		329	return;
176	}	330	}
177	}
178		331
		332	w_->pending = ++pendingcnt [ABSPRI (w_)];
		333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		336	}
		337
179	static void	338	static void
180	queue_events (W *events, int eventcnt, int type)	339	queue_events (EV_P_ W *events, int eventcnt, int type)
181	{	340	{
182	int i;	341	int i;
183		342
184	for (i = 0; i < eventcnt; ++i)	343	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);	344	ev_feed_event (EV_A_ events [i], type);
186	}	345	}
187		346
188	static void	347	inline void
189	fd_event (int fd, int events)	348	fd_event (EV_P_ int fd, int revents)
190	{	349	{
191	ANFD *anfd = anfds + fd;	350	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	351	struct ev_io *w;
193		352
194	for (w = anfd->head; w; w = w->next)	353	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
195	{	354	{
196	int ev = w->events & events;	355	int ev = w->events & revents;
197		356
198	if (ev)	357	if (ev)
199	event ((W)w, ev);	358	ev_feed_event (EV_A_ (W)w, ev);
200	}	359	}
		360	}
		361
		362	void
		363	ev_feed_fd_event (EV_P_ int fd, int revents)
		364	{
		365	fd_event (EV_A_ fd, revents);
201	}	366	}
202		367
203	/*****************************************************************************/	368	/*****************************************************************************/
204		369
205	static int *fdchanges;
206	static int fdchangemax, fdchangecnt;
207
208	static void	370	static void
209	fd_reify (void)	371	fd_reify (EV_P)
210	{	372	{
211	int i;	373	int i;
212		374
213	for (i = 0; i < fdchangecnt; ++i)	375	for (i = 0; i < fdchangecnt; ++i)
214	{	376	{
…		…
216	ANFD *anfd = anfds + fd;	378	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	379	struct ev_io *w;
218		380
219	int events = 0;	381	int events = 0;
220		382
221	for (w = anfd->head; w; w = w->next)	383	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
222	events |= w->events;	384	events |= w->events;
223		385
224	anfd->events &= ~EV_REIFY;	386	anfd->reify = 0;
225		387
226	if (anfd->events != events)
227	{
228	method_modify (fd, anfd->events, events);	388	method_modify (EV_A_ fd, anfd->events, events);
229	anfd->events = events;	389	anfd->events = events;
230	}
231	}	390	}
232		391
233	fdchangecnt = 0;	392	fdchangecnt = 0;
234	}	393	}
235		394
236	static void	395	static void
237	fd_change (int fd)	396	fd_change (EV_P_ int fd)
238	{	397	{
239	if (anfds [fd].events & EV_REIFY || fdchangecnt < 0)	398	if (anfds [fd].reify)
240	return;	399	return;
241		400
242	anfds [fd].events |= EV_REIFY;	401	anfds [fd].reify = 1;
243		402
244	++fdchangecnt;	403	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	404	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
246	fdchanges [fdchangecnt - 1] = fd;	405	fdchanges [fdchangecnt - 1] = fd;
247	}	406	}
248		407
		408	static void
		409	fd_kill (EV_P_ int fd)
		410	{
		411	struct ev_io *w;
		412
		413	while ((w = (struct ev_io *)anfds [fd].head))
		414	{
		415	ev_io_stop (EV_A_ w);
		416	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		417	}
		418	}
		419
		420	static int
		421	fd_valid (int fd)
		422	{
		423	#ifdef WIN32
		424	return !!win32_get_osfhandle (fd);
		425	#else
		426	return fcntl (fd, F_GETFD) != -1;
		427	#endif
		428	}
		429
249	/* called on EBADF to verify fds */	430	/* called on EBADF to verify fds */
250	static void	431	static void
251	fd_recheck (void)	432	fd_ebadf (EV_P)
252	{	433	{
253	int fd;	434	int fd;
254		435
255	for (fd = 0; fd < anfdmax; ++fd)	436	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	437	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	438	if (!fd_valid (fd) == -1 && errno == EBADF)
258	while (anfds [fd].head)	439	fd_kill (EV_A_ fd);
		440	}
		441
		442	/* called on ENOMEM in select/poll to kill some fds and retry */
		443	static void
		444	fd_enomem (EV_P)
		445	{
		446	int fd;
		447
		448	for (fd = anfdmax; fd--; )
		449	if (anfds [fd].events)
259	{	450	{
260	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT);	451	fd_kill (EV_A_ fd);
261	ev_io_stop (anfds [fd].head);	452	return;
262	}	453	}
		454	}
		455
		456	/* usually called after fork if method needs to re-arm all fds from scratch */
		457	static void
		458	fd_rearm_all (EV_P)
		459	{
		460	int fd;
		461
		462	/* this should be highly optimised to not do anything but set a flag */
		463	for (fd = 0; fd < anfdmax; ++fd)
		464	if (anfds [fd].events)
		465	{
		466	anfds [fd].events = 0;
		467	fd_change (EV_A_ fd);
		468	}
263	}	469	}
264		470
265	/*****************************************************************************/	471	/*****************************************************************************/
266		472
267	static struct ev_timer **timers;
268	static int timermax, timercnt;
269
270	static struct ev_periodic **periodics;
271	static int periodicmax, periodiccnt;
272
273	static void	473	static void
274	upheap (WT *timers, int k)	474	upheap (WT *heap, int k)
275	{	475	{
276	WT w = timers [k];	476	WT w = heap [k];
277		477
278	while (k && timers [k >> 1]->at > w->at)	478	while (k && heap [k >> 1]->at > w->at)
279	{	479	{
280	timers [k] = timers [k >> 1];	480	heap [k] = heap [k >> 1];
281	timers [k]->active = k + 1;	481	((W)heap [k])->active = k + 1;
282	k >>= 1;	482	k >>= 1;
283	}	483	}
284		484
285	timers [k] = w;	485	heap [k] = w;
286	timers [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
287		487
288	}	488	}
289		489
290	static void	490	static void
291	downheap (WT *timers, int N, int k)	491	downheap (WT *heap, int N, int k)
292	{	492	{
293	WT w = timers [k];	493	WT w = heap [k];
294		494
295	while (k < (N >> 1))	495	while (k < (N >> 1))
296	{	496	{
297	int j = k << 1;	497	int j = k << 1;
298		498
299	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	499	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
300	++j;	500	++j;
301		501
302	if (w->at <= timers [j]->at)	502	if (w->at <= heap [j]->at)
303	break;	503	break;
304		504
305	timers [k] = timers [j];	505	heap [k] = heap [j];
306	timers [k]->active = k + 1;	506	((W)heap [k])->active = k + 1;
307	k = j;	507	k = j;
308	}	508	}
309		509
310	timers [k] = w;	510	heap [k] = w;
311	timers [k]->active = k + 1;	511	((W)heap [k])->active = k + 1;
312	}	512	}
313		513
314	/*****************************************************************************/	514	/*****************************************************************************/
315		515
316	typedef struct	516	typedef struct
317	{	517	{
318	struct ev_signal *head;	518	WL head;
319	sig_atomic_t gotsig;	519	sig_atomic_t volatile gotsig;
320	} ANSIG;	520	} ANSIG;
321		521
322	static ANSIG *signals;	522	static ANSIG *signals;
323	static int signalmax;	523	static int signalmax;
324		524
325	static int sigpipe [2];	525	static int sigpipe [2];
326	static sig_atomic_t gotsig;	526	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;	527	static struct ev_io sigev;
328		528
329	static void	529	static void
330	signals_init (ANSIG *base, int count)	530	signals_init (ANSIG *base, int count)
331	{	531	{
332	while (count--)	532	while (count--)
333	{	533	{
334	base->head = 0;	534	base->head = 0;
335	base->gotsig = 0;	535	base->gotsig = 0;
		536
336	++base;	537	++base;
337	}	538	}
338	}	539	}
339		540
340	static void	541	static void
341	sighandler (int signum)	542	sighandler (int signum)
342	{	543	{
		544	#if WIN32
		545	signal (signum, sighandler);
		546	#endif
		547
343	signals [signum - 1].gotsig = 1;	548	signals [signum - 1].gotsig = 1;
344		549
345	if (!gotsig)	550	if (!gotsig)
346	{	551	{
		552	int old_errno = errno;
347	gotsig = 1;	553	gotsig = 1;
		554	#ifdef WIN32
		555	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		556	#else
348	write (sigpipe [1], &gotsig, 1);	557	write (sigpipe [1], &signum, 1);
		558	#endif
		559	errno = old_errno;
349	}	560	}
350	}	561	}
351		562
		563	void
		564	ev_feed_signal_event (EV_P_ int signum)
		565	{
		566	#if EV_MULTIPLICITY
		567	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		568	#endif
		569
		570	--signum;
		571
		572	if (signum < 0 || signum >= signalmax)
		573	return;
		574
		575	signals [signum].gotsig = 0;
		576
		577	for (w = signals [signum].head; w; w = w->next)
		578	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		579	}
		580
352	static void	581	static void
353	sigcb (struct ev_io *iow, int revents)	582	sigcb (EV_P_ struct ev_io *iow, int revents)
354	{	583	{
355	struct ev_signal *w;	584	WL w;
356	int sig;	585	int signum;
357		586
		587	#ifdef WIN32
		588	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		589	#else
		590	read (sigpipe [0], &revents, 1);
		591	#endif
358	gotsig = 0;	592	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		593
361	for (sig = signalmax; sig--; )	594	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	595	if (signals [signum].gotsig)
363	{	596	sigevent (EV_A_ signum + 1);
364	signals [sig].gotsig = 0;
365
366	for (w = signals [sig].head; w; w = w->next)
367	event ((W)w, EV_SIGNAL);
368	}
369	}	597	}
370		598
371	static void	599	static void
372	siginit (void)	600	siginit (EV_P)
373	{	601	{
		602	#ifndef WIN32
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	603	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	604	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376		605
377	/* rather than sort out wether we really need nb, set it */	606	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	607	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	608	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		609	#endif
380		610
381	ev_io_set (&sigev, sigpipe [0], EV_READ);	611	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);	612	ev_io_start (EV_A_ &sigev);
		613	ev_unref (EV_A); /* child watcher should not keep loop alive */
383	}	614	}
384		615
385	/*****************************************************************************/	616	/*****************************************************************************/
386		617
387	static struct ev_idle **idles;
388	static int idlemax, idlecnt;
389
390	static struct ev_prepare **prepares;
391	static int preparemax, preparecnt;
392
393	static struct ev_check **checks;
394	static int checkmax, checkcnt;
395
396	/*****************************************************************************/
397
398	static struct ev_child *childs [PID_HASHSIZE];	618	static struct ev_child *childs [PID_HASHSIZE];
		619
		620	#ifndef WIN32
		621
399	static struct ev_signal childev;	622	static struct ev_signal childev;
400		623
401	#ifndef WCONTINUED	624	#ifndef WCONTINUED
402	# define WCONTINUED 0	625	# define WCONTINUED 0
403	#endif	626	#endif
404		627
405	static void	628	static void
406	childcb (struct ev_signal *sw, int revents)	629	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
407	{	630	{
408	struct ev_child *w;	631	struct ev_child *w;
		632
		633	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		634	if (w->pid == pid || !w->pid)
		635	{
		636	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		637	w->rpid = pid;
		638	w->rstatus = status;
		639	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		640	}
		641	}
		642
		643	static void
		644	childcb (EV_P_ struct ev_signal *sw, int revents)
		645	{
409	int pid, status;	646	int pid, status;
410		647
411	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	648	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	649	{
413	if (w->pid == pid || w->pid == -1)	650	/* make sure we are called again until all childs have been reaped */
414	{	651	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
415	w->status = status;	652
416	event ((W)w, EV_CHILD);	653	child_reap (EV_A_ sw, pid, pid, status);
417	}	654	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		655	}
418	}	656	}
		657
		658	#endif
419		659
420	/*****************************************************************************/	660	/*****************************************************************************/
421		661
		662	#if EV_USE_KQUEUE
		663	# include "ev_kqueue.c"
		664	#endif
422	#if EV_USE_EPOLL	665	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	666	# include "ev_epoll.c"
424	#endif	667	#endif
		668	#if EV_USE_POLL
		669	# include "ev_poll.c"
		670	#endif
425	#if EV_USE_SELECT	671	#if EV_USE_SELECT
426	# include "ev_select.c"	672	# include "ev_select.c"
427	#endif	673	#endif
428		674
429	int	675	int
…		…
436	ev_version_minor (void)	682	ev_version_minor (void)
437	{	683	{
438	return EV_VERSION_MINOR;	684	return EV_VERSION_MINOR;
439	}	685	}
440		686
441	int ev_init (int flags)	687	/* return true if we are running with elevated privileges and should ignore env variables */
		688	static int
		689	enable_secure (void)
442	{	690	{
		691	#ifdef WIN32
		692	return 0;
		693	#else
		694	return getuid () != geteuid ()
		695	|| getgid () != getegid ();
		696	#endif
		697	}
		698
		699	int
		700	ev_method (EV_P)
		701	{
		702	return method;
		703	}
		704
		705	static void
		706	loop_init (EV_P_ int methods)
		707	{
443	if (!ev_method)	708	if (!method)
444	{	709	{
445	#if EV_USE_MONOTONIC	710	#if EV_USE_MONOTONIC
446	{	711	{
447	struct timespec ts;	712	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	713	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	714	have_monotonic = 1;
450	}	715	}
451	#endif	716	#endif
452		717
453	ev_now = ev_time ();	718	rt_now = ev_time ();
454	now = get_clock ();	719	mn_now = get_clock ();
		720	now_floor = mn_now;
455	diff = ev_now - now;	721	rtmn_diff = rt_now - mn_now;
456		722
457	if (pipe (sigpipe))	723	if (methods == EVMETHOD_AUTO)
458	return 0;	724	if (!enable_secure () && getenv ("LIBEV_METHODS"))
459		725	methods = atoi (getenv ("LIBEV_METHODS"));
		726	else
460	ev_method = EVMETHOD_NONE;	727	methods = EVMETHOD_ANY;
		728
		729	method = 0;
		730	#if EV_USE_WIN32
		731	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		732	#endif
		733	#if EV_USE_KQUEUE
		734	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		735	#endif
461	#if EV_USE_EPOLL	736	#if EV_USE_EPOLL
462	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	737	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		738	#endif
		739	#if EV_USE_POLL
		740	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
463	#endif	741	#endif
464	#if EV_USE_SELECT	742	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	743	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
466	#endif	744	#endif
467		745
		746	ev_watcher_init (&sigev, sigcb);
		747	ev_set_priority (&sigev, EV_MAXPRI);
		748	}
		749	}
		750
		751	void
		752	loop_destroy (EV_P)
		753	{
		754	int i;
		755
		756	#if EV_USE_WIN32
		757	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		758	#endif
		759	#if EV_USE_KQUEUE
		760	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		761	#endif
		762	#if EV_USE_EPOLL
		763	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		764	#endif
		765	#if EV_USE_POLL
		766	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		767	#endif
		768	#if EV_USE_SELECT
		769	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		770	#endif
		771
		772	for (i = NUMPRI; i--; )
		773	array_free (pending, [i]);
		774
		775	/* have to use the microsoft-never-gets-it-right macro */
		776	array_free_microshit (fdchange);
		777	array_free_microshit (timer);
		778	array_free_microshit (periodic);
		779	array_free_microshit (idle);
		780	array_free_microshit (prepare);
		781	array_free_microshit (check);
		782
		783	method = 0;
		784	}
		785
		786	static void
		787	loop_fork (EV_P)
		788	{
		789	#if EV_USE_EPOLL
		790	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		791	#endif
		792	#if EV_USE_KQUEUE
		793	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		794	#endif
		795
		796	if (ev_is_active (&sigev))
		797	{
		798	/* default loop */
		799
		800	ev_ref (EV_A);
		801	ev_io_stop (EV_A_ &sigev);
		802	close (sigpipe [0]);
		803	close (sigpipe [1]);
		804
		805	while (pipe (sigpipe))
		806	syserr ("(libev) error creating pipe");
		807
		808	siginit (EV_A);
		809	}
		810
		811	postfork = 0;
		812	}
		813
		814	#if EV_MULTIPLICITY
		815	struct ev_loop *
		816	ev_loop_new (int methods)
		817	{
		818	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		819
		820	memset (loop, 0, sizeof (struct ev_loop));
		821
		822	loop_init (EV_A_ methods);
		823
		824	if (ev_method (EV_A))
		825	return loop;
		826
		827	return 0;
		828	}
		829
		830	void
		831	ev_loop_destroy (EV_P)
		832	{
		833	loop_destroy (EV_A);
		834	ev_free (loop);
		835	}
		836
		837	void
		838	ev_loop_fork (EV_P)
		839	{
		840	postfork = 1;
		841	}
		842
		843	#endif
		844
		845	#if EV_MULTIPLICITY
		846	struct ev_loop default_loop_struct;
		847	static struct ev_loop *default_loop;
		848
		849	struct ev_loop *
		850	#else
		851	static int default_loop;
		852
		853	int
		854	#endif
		855	ev_default_loop (int methods)
		856	{
		857	if (sigpipe [0] == sigpipe [1])
		858	if (pipe (sigpipe))
		859	return 0;
		860
		861	if (!default_loop)
		862	{
		863	#if EV_MULTIPLICITY
		864	struct ev_loop *loop = default_loop = &default_loop_struct;
		865	#else
		866	default_loop = 1;
		867	#endif
		868
		869	loop_init (EV_A_ methods);
		870
468	if (ev_method)	871	if (ev_method (EV_A))
469	{	872	{
470	ev_watcher_init (&sigev, sigcb);
471	siginit ();	873	siginit (EV_A);
472		874
		875	#ifndef WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	876	ev_signal_init (&childev, childcb, SIGCHLD);
		877	ev_set_priority (&childev, EV_MAXPRI);
474	ev_signal_start (&childev);	878	ev_signal_start (EV_A_ &childev);
		879	ev_unref (EV_A); /* child watcher should not keep loop alive */
		880	#endif
475	}	881	}
		882	else
		883	default_loop = 0;
476	}	884	}
477		885
478	return ev_method;	886	return default_loop;
		887	}
		888
		889	void
		890	ev_default_destroy (void)
		891	{
		892	#if EV_MULTIPLICITY
		893	struct ev_loop *loop = default_loop;
		894	#endif
		895
		896	#ifndef WIN32
		897	ev_ref (EV_A); /* child watcher */
		898	ev_signal_stop (EV_A_ &childev);
		899	#endif
		900
		901	ev_ref (EV_A); /* signal watcher */
		902	ev_io_stop (EV_A_ &sigev);
		903
		904	close (sigpipe [0]); sigpipe [0] = 0;
		905	close (sigpipe [1]); sigpipe [1] = 0;
		906
		907	loop_destroy (EV_A);
		908	}
		909
		910	void
		911	ev_default_fork (void)
		912	{
		913	#if EV_MULTIPLICITY
		914	struct ev_loop *loop = default_loop;
		915	#endif
		916
		917	if (method)
		918	postfork = 1;
479	}	919	}
480		920
481	/*****************************************************************************/	921	/*****************************************************************************/
482		922
483	void
484	ev_prefork (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_parent (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_child (void)
497	{
498	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();
501	#endif
502
503	ev_io_stop (&sigev);
504	close (sigpipe [0]);
505	close (sigpipe [1]);
506	pipe (sigpipe);
507	siginit ();
508	}
509
510	/*****************************************************************************/
511
512	static void	923	static int
		924	any_pending (EV_P)
		925	{
		926	int pri;
		927
		928	for (pri = NUMPRI; pri--; )
		929	if (pendingcnt [pri])
		930	return 1;
		931
		932	return 0;
		933	}
		934
		935	static void
513	call_pending (void)	936	call_pending (EV_P)
514	{	937	{
		938	int pri;
		939
		940	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	941	while (pendingcnt [pri])
516	{	942	{
517	ANPENDING *p = pendings + --pendingcnt;	943	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		944
519	if (p->w)	945	if (p->w)
520	{	946	{
521	p->w->pending = 0;	947	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	948	p->w->cb (EV_A_ p->w, p->events);
523	}	949	}
524	}	950	}
525	}	951	}
526		952
527	static void	953	static void
528	timers_reify (void)	954	timers_reify (EV_P)
529	{	955	{
530	while (timercnt && timers [0]->at <= now)	956	while (timercnt && ((WT)timers [0])->at <= mn_now)
531	{	957	{
532	struct ev_timer *w = timers [0];	958	struct ev_timer *w = timers [0];
533		959
534	event ((W)w, EV_TIMEOUT);	960	assert (("inactive timer on timer heap detected", ev_is_active (w)));
535		961
536	/* first reschedule or stop timer */	962	/* first reschedule or stop timer */
537	if (w->repeat)	963	if (w->repeat)
538	{	964	{
		965	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
539	w->at = now + w->repeat;	966	((WT)w)->at = mn_now + w->repeat;
540	assert (("timer timeout in the past, negative repeat?", w->at > now));
541	downheap ((WT *)timers, timercnt, 0);	967	downheap ((WT *)timers, timercnt, 0);
542	}	968	}
543	else	969	else
544	ev_timer_stop (w); /* nonrepeating: stop timer */	970	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
545	}
546	}
547		971
		972	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		973	}
		974	}
		975
548	static void	976	static void
549	periodics_reify (void)	977	periodics_reify (EV_P)
550	{	978	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	979	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
552	{	980	{
553	struct ev_periodic *w = periodics [0];	981	struct ev_periodic *w = periodics [0];
554		982
		983	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		984
555	/* first reschedule or stop timer */	985	/* first reschedule or stop timer */
556	if (w->interval)	986	if (w->reschedule_cb)
557	{	987	{
		988	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		989
		990	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		991	downheap ((WT *)periodics, periodiccnt, 0);
		992	}
		993	else if (w->interval)
		994	{
558	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	995	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
559	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	996	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
560	downheap ((WT *)periodics, periodiccnt, 0);	997	downheap ((WT *)periodics, periodiccnt, 0);
561	}	998	}
562	else	999	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	1000	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		1001
565	event ((W)w, EV_TIMEOUT);	1002	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
566	}	1003	}
567	}	1004	}
568		1005
569	static void	1006	static void
570	periodics_reschedule (ev_tstamp diff)	1007	periodics_reschedule (EV_P)
571	{	1008	{
572	int i;	1009	int i;
573		1010
574	/* adjust periodics after time jump */	1011	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	1012	for (i = 0; i < periodiccnt; ++i)
576	{	1013	{
577	struct ev_periodic *w = periodics [i];	1014	struct ev_periodic *w = periodics [i];
578		1015
		1016	if (w->reschedule_cb)
		1017	((WT)w)->at = w->reschedule_cb (w, rt_now);
579	if (w->interval)	1018	else if (w->interval)
		1019	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1020	}
		1021
		1022	/* now rebuild the heap */
		1023	for (i = periodiccnt >> 1; i--; )
		1024	downheap ((WT *)periodics, periodiccnt, i);
		1025	}
		1026
		1027	inline int
		1028	time_update_monotonic (EV_P)
		1029	{
		1030	mn_now = get_clock ();
		1031
		1032	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1033	{
		1034	rt_now = rtmn_diff + mn_now;
		1035	return 0;
		1036	}
		1037	else
		1038	{
		1039	now_floor = mn_now;
		1040	rt_now = ev_time ();
		1041	return 1;
		1042	}
		1043	}
		1044
		1045	static void
		1046	time_update (EV_P)
		1047	{
		1048	int i;
		1049
		1050	#if EV_USE_MONOTONIC
		1051	if (expect_true (have_monotonic))
		1052	{
		1053	if (time_update_monotonic (EV_A))
580	{	1054	{
581	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1055	ev_tstamp odiff = rtmn_diff;
582		1056
583	if (fabs (diff) >= 1e-4)	1057	for (i = 4; --i; ) /* loop a few times, before making important decisions */
584	{	1058	{
585	ev_periodic_stop (w);	1059	rtmn_diff = rt_now - mn_now;
586	ev_periodic_start (w);
587		1060
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1061	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1062	return; /* all is well */
		1063
		1064	rt_now = ev_time ();
		1065	mn_now = get_clock ();
		1066	now_floor = mn_now;
589	}	1067	}
		1068
		1069	periodics_reschedule (EV_A);
		1070	/* no timer adjustment, as the monotonic clock doesn't jump */
		1071	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
590	}	1072	}
591	}	1073	}
592	}	1074	else
593		1075	#endif
594	static void	1076	{
595	time_update (void)
596	{
597	int i;
598
599	ev_now = ev_time ();	1077	rt_now = ev_time ();
600		1078
601	if (have_monotonic)	1079	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
602	{
603	ev_tstamp odiff = diff;
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	1080	{
607	now = get_clock ();
608	diff = ev_now - now;
609
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)
611	return; /* all is well */
612
613	ev_now = ev_time ();
614	}
615
616	periodics_reschedule (diff - odiff);
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}
619	else
620	{
621	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
622	{
623	periodics_reschedule (ev_now - now);	1081	periodics_reschedule (EV_A);
624		1082
625	/* adjust timers. this is easy, as the offset is the same for all */	1083	/* adjust timers. this is easy, as the offset is the same for all */
626	for (i = 0; i < timercnt; ++i)	1084	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;	1085	((WT)timers [i])->at += rt_now - mn_now;
628	}	1086	}
629		1087
630	now = ev_now;	1088	mn_now = rt_now;
631	}	1089	}
632	}	1090	}
633		1091
634	int ev_loop_done;	1092	void
		1093	ev_ref (EV_P)
		1094	{
		1095	++activecnt;
		1096	}
635		1097
		1098	void
		1099	ev_unref (EV_P)
		1100	{
		1101	--activecnt;
		1102	}
		1103
		1104	static int loop_done;
		1105
		1106	void
636	void ev_loop (int flags)	1107	ev_loop (EV_P_ int flags)
637	{	1108	{
638	double block;	1109	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1110	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
640		1111
641	do	1112	do
642	{	1113	{
643	/* queue check watchers (and execute them) */	1114	/* queue check watchers (and execute them) */
644	if (preparecnt)	1115	if (expect_false (preparecnt))
645	{	1116	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1117	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();	1118	call_pending (EV_A);
648	}	1119	}
649		1120
		1121	/* we might have forked, so reify kernel state if necessary */
		1122	if (expect_false (postfork))
		1123	loop_fork (EV_A);
		1124
650	/* update fd-related kernel structures */	1125	/* update fd-related kernel structures */
651	fd_reify ();	1126	fd_reify (EV_A);
652		1127
653	/* calculate blocking time */	1128	/* calculate blocking time */
654		1129
655	/* we only need this for !monotonic clockor timers, but as we basically	1130	/* we only need this for !monotonic clock or timers, but as we basically
656	always have timers, we just calculate it always */	1131	always have timers, we just calculate it always */
		1132	#if EV_USE_MONOTONIC
		1133	if (expect_true (have_monotonic))
		1134	time_update_monotonic (EV_A);
		1135	else
		1136	#endif
		1137	{
657	ev_now = ev_time ();	1138	rt_now = ev_time ();
		1139	mn_now = rt_now;
		1140	}
658		1141
659	if (flags & EVLOOP_NONBLOCK || idlecnt)	1142	if (flags & EVLOOP_NONBLOCK || idlecnt)
660	block = 0.;	1143	block = 0.;
661	else	1144	else
662	{	1145	{
663	block = MAX_BLOCKTIME;	1146	block = MAX_BLOCKTIME;
664		1147
665	if (timercnt)	1148	if (timercnt)
666	{	1149	{
667	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1150	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
668	if (block > to) block = to;	1151	if (block > to) block = to;
669	}	1152	}
670		1153
671	if (periodiccnt)	1154	if (periodiccnt)
672	{	1155	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1156	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
674	if (block > to) block = to;	1157	if (block > to) block = to;
675	}	1158	}
676		1159
677	if (block < 0.) block = 0.;	1160	if (block < 0.) block = 0.;
678	}	1161	}
679		1162
680	method_poll (block);	1163	method_poll (EV_A_ block);
681		1164
682	/* update ev_now, do magic */	1165	/* update rt_now, do magic */
683	time_update ();	1166	time_update (EV_A);
684		1167
685	/* queue pending timers and reschedule them */	1168	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	1169	timers_reify (EV_A); /* relative timers called last */
687	periodics_reify (); /* absolute timers called first */	1170	periodics_reify (EV_A); /* absolute timers called first */
688		1171
689	/* queue idle watchers unless io or timers are pending */	1172	/* queue idle watchers unless io or timers are pending */
690	if (!pendingcnt)	1173	if (idlecnt && !any_pending (EV_A))
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	1174	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		1175
693	/* queue check watchers, to be executed first */	1176	/* queue check watchers, to be executed first */
694	if (checkcnt)	1177	if (checkcnt)
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	1178	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		1179
697	call_pending ();	1180	call_pending (EV_A);
698	}	1181	}
699	while (!ev_loop_done);	1182	while (activecnt && !loop_done);
700		1183
701	if (ev_loop_done != 2)	1184	if (loop_done != 2)
702	ev_loop_done = 0;	1185	loop_done = 0;
		1186	}
		1187
		1188	void
		1189	ev_unloop (EV_P_ int how)
		1190	{
		1191	loop_done = how;
703	}	1192	}
704		1193
705	/*****************************************************************************/	1194	/*****************************************************************************/
706		1195
707	static void	1196	inline void
708	wlist_add (WL *head, WL elem)	1197	wlist_add (WL *head, WL elem)
709	{	1198	{
710	elem->next = *head;	1199	elem->next = *head;
711	*head = elem;	1200	*head = elem;
712	}	1201	}
713		1202
714	static void	1203	inline void
715	wlist_del (WL *head, WL elem)	1204	wlist_del (WL *head, WL elem)
716	{	1205	{
717	while (*head)	1206	while (*head)
718	{	1207	{
719	if (*head == elem)	1208	if (*head == elem)
…		…
724		1213
725	head = &(*head)->next;	1214	head = &(*head)->next;
726	}	1215	}
727	}	1216	}
728		1217
729	static void	1218	inline void
730	ev_clear (W w)	1219	ev_clear_pending (EV_P_ W w)
731	{	1220	{
732	if (w->pending)	1221	if (w->pending)
733	{	1222	{
734	pendings [w->pending - 1].w = 0;	1223	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	1224	w->pending = 0;
736	}	1225	}
737	}	1226	}
738		1227
739	static void	1228	inline void
740	ev_start (W w, int active)	1229	ev_start (EV_P_ W w, int active)
741	{	1230	{
		1231	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1232	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1233
742	w->active = active;	1234	w->active = active;
		1235	ev_ref (EV_A);
743	}	1236	}
744		1237
745	static void	1238	inline void
746	ev_stop (W w)	1239	ev_stop (EV_P_ W w)
747	{	1240	{
		1241	ev_unref (EV_A);
748	w->active = 0;	1242	w->active = 0;
749	}	1243	}
750		1244
751	/*****************************************************************************/	1245	/*****************************************************************************/
752		1246
753	void	1247	void
754	ev_io_start (struct ev_io *w)	1248	ev_io_start (EV_P_ struct ev_io *w)
755	{	1249	{
		1250	int fd = w->fd;
		1251
756	if (ev_is_active (w))	1252	if (ev_is_active (w))
757	return;	1253	return;
758		1254
759	int fd = w->fd;	1255	assert (("ev_io_start called with negative fd", fd >= 0));
760		1256
761	ev_start ((W)w, 1);	1257	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1258	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1259	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		1260
765	fd_change (fd);	1261	fd_change (EV_A_ fd);
766	}	1262	}
767		1263
768	void	1264	void
769	ev_io_stop (struct ev_io *w)	1265	ev_io_stop (EV_P_ struct ev_io *w)
770	{	1266	{
771	ev_clear ((W)w);	1267	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	1268	if (!ev_is_active (w))
773	return;	1269	return;
774		1270
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1271	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	1272	ev_stop (EV_A_ (W)w);
777		1273
778	fd_change (w->fd);	1274	fd_change (EV_A_ w->fd);
779	}	1275	}
780		1276
781	void	1277	void
782	ev_timer_start (struct ev_timer *w)	1278	ev_timer_start (EV_P_ struct ev_timer *w)
783	{	1279	{
784	if (ev_is_active (w))	1280	if (ev_is_active (w))
785	return;	1281	return;
786		1282
787	w->at += now;	1283	((WT)w)->at += mn_now;
788		1284
789	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1285	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
790		1286
791	ev_start ((W)w, ++timercnt);	1287	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	1288	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
793	timers [timercnt - 1] = w;	1289	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	1290	upheap ((WT *)timers, timercnt - 1);
795	}
796		1291
		1292	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1293	}
		1294
797	void	1295	void
798	ev_timer_stop (struct ev_timer *w)	1296	ev_timer_stop (EV_P_ struct ev_timer *w)
799	{	1297	{
800	ev_clear ((W)w);	1298	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1299	if (!ev_is_active (w))
802	return;	1300	return;
803		1301
		1302	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1303
804	if (w->active < timercnt--)	1304	if (((W)w)->active < timercnt--)
805	{	1305	{
806	timers [w->active - 1] = timers [timercnt];	1306	timers [((W)w)->active - 1] = timers [timercnt];
807	downheap ((WT *)timers, timercnt, w->active - 1);	1307	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
808	}	1308	}
809		1309
810	w->at = w->repeat;	1310	((WT)w)->at = w->repeat;
811		1311
812	ev_stop ((W)w);	1312	ev_stop (EV_A_ (W)w);
813	}	1313	}
814		1314
815	void	1315	void
816	ev_timer_again (struct ev_timer *w)	1316	ev_timer_again (EV_P_ struct ev_timer *w)
817	{	1317	{
818	if (ev_is_active (w))	1318	if (ev_is_active (w))
819	{	1319	{
820	if (w->repeat)	1320	if (w->repeat)
821	{	1321	{
822	w->at = now + w->repeat;	1322	((WT)w)->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1323	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
824	}	1324	}
825	else	1325	else
826	ev_timer_stop (w);	1326	ev_timer_stop (EV_A_ w);
827	}	1327	}
828	else if (w->repeat)	1328	else if (w->repeat)
829	ev_timer_start (w);	1329	ev_timer_start (EV_A_ w);
830	}	1330	}
831		1331
832	void	1332	void
833	ev_periodic_start (struct ev_periodic *w)	1333	ev_periodic_start (EV_P_ struct ev_periodic *w)
834	{	1334	{
835	if (ev_is_active (w))	1335	if (ev_is_active (w))
836	return;	1336	return;
837		1337
838	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1338	if (w->reschedule_cb)
839		1339	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1340	else if (w->interval)
		1341	{
		1342	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
840	/* this formula differs from the one in periodic_reify because we do not always round up */	1343	/* this formula differs from the one in periodic_reify because we do not always round up */
841	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1344	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1345	}
843		1346
844	ev_start ((W)w, ++periodiccnt);	1347	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1348	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
846	periodics [periodiccnt - 1] = w;	1349	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1350	upheap ((WT *)periodics, periodiccnt - 1);
848	}
849		1351
		1352	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1353	}
		1354
850	void	1355	void
851	ev_periodic_stop (struct ev_periodic *w)	1356	ev_periodic_stop (EV_P_ struct ev_periodic *w)
852	{	1357	{
853	ev_clear ((W)w);	1358	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1359	if (!ev_is_active (w))
855	return;	1360	return;
856		1361
		1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1363
857	if (w->active < periodiccnt--)	1364	if (((W)w)->active < periodiccnt--)
858	{	1365	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1366	periodics [((W)w)->active - 1] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1367	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
861	}	1368	}
862		1369
863	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
864	}	1371	}
865		1372
866	void	1373	void
		1374	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1375	{
		1376	ev_periodic_stop (EV_A_ w);
		1377	ev_periodic_start (EV_A_ w);
		1378	}
		1379
		1380	void
867	ev_signal_start (struct ev_signal *w)	1381	ev_idle_start (EV_P_ struct ev_idle *w)
868	{	1382	{
869	if (ev_is_active (w))	1383	if (ev_is_active (w))
870	return;	1384	return;
871		1385
		1386	ev_start (EV_A_ (W)w, ++idlecnt);
		1387	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1388	idles [idlecnt - 1] = w;
		1389	}
		1390
		1391	void
		1392	ev_idle_stop (EV_P_ struct ev_idle *w)
		1393	{
		1394	ev_clear_pending (EV_A_ (W)w);
		1395	if (ev_is_active (w))
		1396	return;
		1397
		1398	idles [((W)w)->active - 1] = idles [--idlecnt];
		1399	ev_stop (EV_A_ (W)w);
		1400	}
		1401
		1402	void
		1403	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1404	{
		1405	if (ev_is_active (w))
		1406	return;
		1407
		1408	ev_start (EV_A_ (W)w, ++preparecnt);
		1409	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1410	prepares [preparecnt - 1] = w;
		1411	}
		1412
		1413	void
		1414	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1415	{
		1416	ev_clear_pending (EV_A_ (W)w);
		1417	if (ev_is_active (w))
		1418	return;
		1419
		1420	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1421	ev_stop (EV_A_ (W)w);
		1422	}
		1423
		1424	void
		1425	ev_check_start (EV_P_ struct ev_check *w)
		1426	{
		1427	if (ev_is_active (w))
		1428	return;
		1429
		1430	ev_start (EV_A_ (W)w, ++checkcnt);
		1431	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1432	checks [checkcnt - 1] = w;
		1433	}
		1434
		1435	void
		1436	ev_check_stop (EV_P_ struct ev_check *w)
		1437	{
		1438	ev_clear_pending (EV_A_ (W)w);
		1439	if (ev_is_active (w))
		1440	return;
		1441
		1442	checks [((W)w)->active - 1] = checks [--checkcnt];
		1443	ev_stop (EV_A_ (W)w);
		1444	}
		1445
		1446	#ifndef SA_RESTART
		1447	# define SA_RESTART 0
		1448	#endif
		1449
		1450	void
		1451	ev_signal_start (EV_P_ struct ev_signal *w)
		1452	{
		1453	#if EV_MULTIPLICITY
		1454	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1455	#endif
		1456	if (ev_is_active (w))
		1457	return;
		1458
		1459	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1460
872	ev_start ((W)w, 1);	1461	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1462	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1463	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1464
876	if (!w->next)	1465	if (!((WL)w)->next)
877	{	1466	{
		1467	#if WIN32
		1468	signal (w->signum, sighandler);
		1469	#else
878	struct sigaction sa;	1470	struct sigaction sa;
879	sa.sa_handler = sighandler;	1471	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1472	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1473	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1474	sigaction (w->signum, &sa, 0);
		1475	#endif
883	}	1476	}
884	}	1477	}
885		1478
886	void	1479	void
887	ev_signal_stop (struct ev_signal *w)	1480	ev_signal_stop (EV_P_ struct ev_signal *w)
888	{	1481	{
889	ev_clear ((W)w);	1482	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1483	if (!ev_is_active (w))
891	return;	1484	return;
892		1485
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1486	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1487	ev_stop (EV_A_ (W)w);
895		1488
896	if (!signals [w->signum - 1].head)	1489	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1490	signal (w->signum, SIG_DFL);
898	}	1491	}
899		1492
900	void	1493	void
901	ev_idle_start (struct ev_idle *w)	1494	ev_child_start (EV_P_ struct ev_child *w)
902	{	1495	{
		1496	#if EV_MULTIPLICITY
		1497	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1498	#endif
903	if (ev_is_active (w))	1499	if (ev_is_active (w))
904	return;	1500	return;
905		1501
906	ev_start ((W)w, ++idlecnt);	1502	ev_start (EV_A_ (W)w, 1);
907	array_needsize (idles, idlemax, idlecnt, );	1503	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
908	idles [idlecnt - 1] = w;
909	}	1504	}
910		1505
911	void	1506	void
912	ev_idle_stop (struct ev_idle *w)	1507	ev_child_stop (EV_P_ struct ev_child *w)
913	{	1508	{
914	ev_clear ((W)w);	1509	ev_clear_pending (EV_A_ (W)w);
915	if (ev_is_active (w))	1510	if (ev_is_active (w))
916	return;	1511	return;
917		1512
918	idles [w->active - 1] = idles [--idlecnt];
919	ev_stop ((W)w);
920	}
921
922	void
923	ev_prepare_start (struct ev_prepare *w)
924	{
925	if (ev_is_active (w))
926	return;
927
928	ev_start ((W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );
930	prepares [preparecnt - 1] = w;
931	}
932
933	void
934	ev_prepare_stop (struct ev_prepare *w)
935	{
936	ev_clear ((W)w);
937	if (ev_is_active (w))
938	return;
939
940	prepares [w->active - 1] = prepares [--preparecnt];
941	ev_stop ((W)w);
942	}
943
944	void
945	ev_check_start (struct ev_check *w)
946	{
947	if (ev_is_active (w))
948	return;
949
950	ev_start ((W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );
952	checks [checkcnt - 1] = w;
953	}
954
955	void
956	ev_check_stop (struct ev_check *w)
957	{
958	ev_clear ((W)w);
959	if (ev_is_active (w))
960	return;
961
962	checks [w->active - 1] = checks [--checkcnt];
963	ev_stop ((W)w);
964	}
965
966	void
967	ev_child_start (struct ev_child *w)
968	{
969	if (ev_is_active (w))
970	return;
971
972	ev_start ((W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}
975
976	void
977	ev_child_stop (struct ev_child *w)
978	{
979	ev_clear ((W)w);
980	if (ev_is_active (w))
981	return;
982
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1513	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
984	ev_stop ((W)w);	1514	ev_stop (EV_A_ (W)w);
985	}	1515	}
986		1516
987	/*****************************************************************************/	1517	/*****************************************************************************/
988		1518
989	struct ev_once	1519	struct ev_once
…		…
993	void (*cb)(int revents, void *arg);	1523	void (*cb)(int revents, void *arg);
994	void *arg;	1524	void *arg;
995	};	1525	};
996		1526
997	static void	1527	static void
998	once_cb (struct ev_once *once, int revents)	1528	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	1529	{
1000	void (*cb)(int revents, void *arg) = once->cb;	1530	void (*cb)(int revents, void *arg) = once->cb;
1001	void *arg = once->arg;	1531	void *arg = once->arg;
1002		1532
1003	ev_io_stop (&once->io);	1533	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	1534	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	1535	ev_free (once);
1006		1536
1007	cb (revents, arg);	1537	cb (revents, arg);
1008	}	1538	}
1009		1539
1010	static void	1540	static void
1011	once_cb_io (struct ev_io *w, int revents)	1541	once_cb_io (EV_P_ struct ev_io *w, int revents)
1012	{	1542	{
1013	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1543	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1014	}	1544	}
1015		1545
1016	static void	1546	static void
1017	once_cb_to (struct ev_timer *w, int revents)	1547	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1018	{	1548	{
1019	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1549	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1020	}	1550	}
1021		1551
1022	void	1552	void
1023	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1553	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1024	{	1554	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	1555	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1026		1556
1027	if (!once)	1557	if (!once)
1028	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1558	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1029	else	1559	else
1030	{	1560	{
…		…
1033		1563
1034	ev_watcher_init (&once->io, once_cb_io);	1564	ev_watcher_init (&once->io, once_cb_io);
1035	if (fd >= 0)	1565	if (fd >= 0)
1036	{	1566	{
1037	ev_io_set (&once->io, fd, events);	1567	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	1568	ev_io_start (EV_A_ &once->io);
1039	}	1569	}
1040		1570
1041	ev_watcher_init (&once->to, once_cb_to);	1571	ev_watcher_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	1572	if (timeout >= 0.)
1043	{	1573	{
1044	ev_timer_set (&once->to, timeout, 0.);	1574	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	1575	ev_timer_start (EV_A_ &once->to);
1046	}	1576	}
1047	}	1577	}
1048	}	1578	}
1049		1579
1050	/*****************************************************************************/
1051
1052	#if 0
1053
1054	struct ev_io wio;
1055
1056	static void
1057	sin_cb (struct ev_io *w, int revents)
1058	{
1059	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1060	}
1061
1062	static void
1063	ocb (struct ev_timer *w, int revents)
1064	{
1065	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1066	ev_timer_stop (w);
1067	ev_timer_start (w);
1068	}
1069
1070	static void
1071	scb (struct ev_signal *w, int revents)
1072	{
1073	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1074	ev_io_stop (&wio);
1075	ev_io_start (&wio);
1076	}
1077
1078	static void
1079	gcb (struct ev_signal *w, int revents)
1080	{
1081	fprintf (stderr, "generic %x\n", revents);
1082
1083	}
1084
1085	int main (void)
1086	{
1087	ev_init (0);
1088
1089	ev_io_init (&wio, sin_cb, 0, EV_READ);
1090	ev_io_start (&wio);
1091
1092	struct ev_timer t[10000];
1093
1094	#if 0
1095	int i;
1096	for (i = 0; i < 10000; ++i)
1097	{
1098	struct ev_timer *w = t + i;
1099	ev_watcher_init (w, ocb, i);
1100	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1101	ev_timer_start (w);
1102	if (drand48 () < 0.5)
1103	ev_timer_stop (w);
1104	}
1105	#endif
1106
1107	struct ev_timer t1;
1108	ev_timer_init (&t1, ocb, 5, 10);
1109	ev_timer_start (&t1);
1110
1111	struct ev_signal sig;
1112	ev_signal_init (&sig, scb, SIGQUIT);
1113	ev_signal_start (&sig);
1114
1115	struct ev_check cw;
1116	ev_check_init (&cw, gcb);
1117	ev_check_start (&cw);
1118
1119	struct ev_idle iw;
1120	ev_idle_init (&iw, gcb);
1121	ev_idle_start (&iw);
1122
1123	ev_loop (0);
1124
1125	return 0;
1126	}
1127
1128	#endif
1129
1130
1131
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