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Comparing libev/ev.c (file contents):
Revision 1.33 by root, Thu Nov 1 11:11:22 2007 UTC vs.
Revision 1.78 by root, Thu Nov 8 21:08:56 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
75	#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)
76		146
77	typedef struct ev_watcher *W;	147	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	148	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	149	typedef struct ev_watcher_time *WT;
80		150
81	static ev_tstamp now, diff; /* monotonic clock */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
82	ev_tstamp ev_now;
83	int ev_method;
84		152
85	static int have_monotonic; /* runtime */	153	#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		154
91	/*****************************************************************************/	155	/*****************************************************************************/
92		156
93	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
94	ev_time (void)	239	ev_time (void)
95	{	240	{
96	#if EV_USE_REALTIME	241	#if EV_USE_REALTIME
97	struct timespec ts;	242	struct timespec ts;
98	clock_gettime (CLOCK_REALTIME, &ts);	243	clock_gettime (CLOCK_REALTIME, &ts);
…		…
102	gettimeofday (&tv, 0);	247	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	248	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	249	#endif
105	}	250	}
106		251
107	static ev_tstamp	252	inline ev_tstamp
108	get_clock (void)	253	get_clock (void)
109	{	254	{
110	#if EV_USE_MONOTONIC	255	#if EV_USE_MONOTONIC
111	if (have_monotonic)	256	if (expect_true (have_monotonic))
112	{	257	{
113	struct timespec ts;	258	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	259	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	260	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	261	}
117	#endif	262	#endif
118		263
119	return ev_time ();	264	return ev_time ();
120	}	265	}
121		266
		267	ev_tstamp
		268	ev_now (EV_P)
		269	{
		270	return rt_now;
		271	}
		272
122	#define array_roundsize(base,n) ((n) | 4 & ~3)	273	#define array_roundsize(type,n) ((n) | 4 & ~3)
123		274
124	#define array_needsize(base,cur,cnt,init) \	275	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	276	if (expect_false ((cnt) > cur)) \
126	{ \	277	{ \
127	int newcnt = cur; \	278	int newcnt = cur; \
128	do \	279	do \
129	{ \	280	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	281	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	282	} \
132	while ((cnt) > newcnt); \	283	while ((cnt) > newcnt); \
133	\	284	\
134	base = realloc (base, sizeof (*base) * (newcnt)); \	285	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
135	init (base + cur, newcnt - cur); \	286	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	287	cur = newcnt; \
137	}	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;
138		305
139	/*****************************************************************************/	306	/*****************************************************************************/
140
141	typedef struct
142	{
143	struct ev_io *head;
144	unsigned char events;
145	unsigned char reify;
146	} ANFD;
147
148	static ANFD *anfds;
149	static int anfdmax;
150		307
151	static void	308	static void
152	anfds_init (ANFD *base, int count)	309	anfds_init (ANFD *base, int count)
153	{	310	{
154	while (count--)	311	while (count--)
…		…
159		316
160	++base;	317	++base;
161	}	318	}
162	}	319	}
163		320
164	typedef struct	321	void
		322	ev_feed_event (EV_P_ void *w, int revents)
165	{	323	{
166	W w;	324	W w_ = (W)w;
167	int events;
168	} ANPENDING;
169		325
170	static ANPENDING *pendings;
171	static int pendingmax, pendingcnt;
172
173	static void
174	event (W w, int events)
175	{
176	if (w->pending)	326	if (w_->pending)
177	{	327	{
178	pendings [w->pending - 1].events |= events;	328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
179	return;	329	return;
180	}	330	}
181		331
182	w->pending = ++pendingcnt;	332	w_->pending = ++pendingcnt [ABSPRI (w_)];
183	array_needsize (pendings, pendingmax, pendingcnt, );	333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
184	pendings [pendingcnt - 1].w = w;	334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
185	pendings [pendingcnt - 1].events = events;	335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
186	}	336	}
187		337
188	static void	338	static void
189	queue_events (W *events, int eventcnt, int type)	339	queue_events (EV_P_ W *events, int eventcnt, int type)
190	{	340	{
191	int i;	341	int i;
192		342
193	for (i = 0; i < eventcnt; ++i)	343	for (i = 0; i < eventcnt; ++i)
194	event (events [i], type);	344	ev_feed_event (EV_A_ events [i], type);
195	}	345	}
196		346
197	static void	347	static void
198	fd_event (int fd, int events)	348	fd_event (EV_P_ int fd, int events)
199	{	349	{
200	ANFD *anfd = anfds + fd;	350	ANFD *anfd = anfds + fd;
201	struct ev_io *w;	351	struct ev_io *w;
202		352
203	for (w = anfd->head; w; w = w->next)	353	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
204	{	354	{
205	int ev = w->events & events;	355	int ev = w->events & events;
206		356
207	if (ev)	357	if (ev)
208	event ((W)w, ev);	358	ev_feed_event (EV_A_ (W)w, ev);
209	}	359	}
210	}	360	}
211		361
212	/*****************************************************************************/	362	/*****************************************************************************/
213		363
214	static int *fdchanges;
215	static int fdchangemax, fdchangecnt;
216
217	static void	364	static void
218	fd_reify (void)	365	fd_reify (EV_P)
219	{	366	{
220	int i;	367	int i;
221		368
222	for (i = 0; i < fdchangecnt; ++i)	369	for (i = 0; i < fdchangecnt; ++i)
223	{	370	{
…		…
225	ANFD *anfd = anfds + fd;	372	ANFD *anfd = anfds + fd;
226	struct ev_io *w;	373	struct ev_io *w;
227		374
228	int events = 0;	375	int events = 0;
229		376
230	for (w = anfd->head; w; w = w->next)	377	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
231	events |= w->events;	378	events |= w->events;
232		379
233	anfd->reify = 0;	380	anfd->reify = 0;
234		381
235	if (anfd->events != events)
236	{
237	method_modify (fd, anfd->events, events);	382	method_modify (EV_A_ fd, anfd->events, events);
238	anfd->events = events;	383	anfd->events = events;
239	}
240	}	384	}
241		385
242	fdchangecnt = 0;	386	fdchangecnt = 0;
243	}	387	}
244		388
245	static void	389	static void
246	fd_change (int fd)	390	fd_change (EV_P_ int fd)
247	{	391	{
248	if (anfds [fd].reify || fdchangecnt < 0)	392	if (anfds [fd].reify)
249	return;	393	return;
250		394
251	anfds [fd].reify = 1;	395	anfds [fd].reify = 1;
252		396
253	++fdchangecnt;	397	++fdchangecnt;
254	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	398	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
255	fdchanges [fdchangecnt - 1] = fd;	399	fdchanges [fdchangecnt - 1] = fd;
256	}	400	}
257		401
		402	static void
		403	fd_kill (EV_P_ int fd)
		404	{
		405	struct ev_io *w;
		406
		407	while ((w = (struct ev_io *)anfds [fd].head))
		408	{
		409	ev_io_stop (EV_A_ w);
		410	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		411	}
		412	}
		413
		414	static int
		415	fd_valid (int fd)
		416	{
		417	#ifdef WIN32
		418	return !!win32_get_osfhandle (fd);
		419	#else
		420	return fcntl (fd, F_GETFD) != -1;
		421	#endif
		422	}
		423
258	/* called on EBADF to verify fds */	424	/* called on EBADF to verify fds */
259	static void	425	static void
260	fd_recheck (void)	426	fd_ebadf (EV_P)
261	{	427	{
262	int fd;	428	int fd;
263		429
264	for (fd = 0; fd < anfdmax; ++fd)	430	for (fd = 0; fd < anfdmax; ++fd)
265	if (anfds [fd].events)	431	if (anfds [fd].events)
266	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	432	if (!fd_valid (fd) == -1 && errno == EBADF)
267	while (anfds [fd].head)	433	fd_kill (EV_A_ fd);
		434	}
		435
		436	/* called on ENOMEM in select/poll to kill some fds and retry */
		437	static void
		438	fd_enomem (EV_P)
		439	{
		440	int fd;
		441
		442	for (fd = anfdmax; fd--; )
		443	if (anfds [fd].events)
268	{	444	{
269	ev_io_stop (anfds [fd].head);	445	fd_kill (EV_A_ fd);
270	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	446	return;
271	}	447	}
		448	}
		449
		450	/* usually called after fork if method needs to re-arm all fds from scratch */
		451	static void
		452	fd_rearm_all (EV_P)
		453	{
		454	int fd;
		455
		456	/* this should be highly optimised to not do anything but set a flag */
		457	for (fd = 0; fd < anfdmax; ++fd)
		458	if (anfds [fd].events)
		459	{
		460	anfds [fd].events = 0;
		461	fd_change (EV_A_ fd);
		462	}
272	}	463	}
273		464
274	/*****************************************************************************/	465	/*****************************************************************************/
275		466
276	static struct ev_timer **timers;
277	static int timermax, timercnt;
278
279	static struct ev_periodic **periodics;
280	static int periodicmax, periodiccnt;
281
282	static void	467	static void
283	upheap (WT *timers, int k)	468	upheap (WT *heap, int k)
284	{	469	{
285	WT w = timers [k];	470	WT w = heap [k];
286		471
287	while (k && timers [k >> 1]->at > w->at)	472	while (k && heap [k >> 1]->at > w->at)
288	{	473	{
289	timers [k] = timers [k >> 1];	474	heap [k] = heap [k >> 1];
290	timers [k]->active = k + 1;	475	((W)heap [k])->active = k + 1;
291	k >>= 1;	476	k >>= 1;
292	}	477	}
293		478
294	timers [k] = w;	479	heap [k] = w;
295	timers [k]->active = k + 1;	480	((W)heap [k])->active = k + 1;
296		481
297	}	482	}
298		483
299	static void	484	static void
300	downheap (WT *timers, int N, int k)	485	downheap (WT *heap, int N, int k)
301	{	486	{
302	WT w = timers [k];	487	WT w = heap [k];
303		488
304	while (k < (N >> 1))	489	while (k < (N >> 1))
305	{	490	{
306	int j = k << 1;	491	int j = k << 1;
307		492
308	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	493	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
309	++j;	494	++j;
310		495
311	if (w->at <= timers [j]->at)	496	if (w->at <= heap [j]->at)
312	break;	497	break;
313		498
314	timers [k] = timers [j];	499	heap [k] = heap [j];
315	timers [k]->active = k + 1;	500	((W)heap [k])->active = k + 1;
316	k = j;	501	k = j;
317	}	502	}
318		503
319	timers [k] = w;	504	heap [k] = w;
320	timers [k]->active = k + 1;	505	((W)heap [k])->active = k + 1;
321	}	506	}
322		507
323	/*****************************************************************************/	508	/*****************************************************************************/
324		509
325	typedef struct	510	typedef struct
326	{	511	{
327	struct ev_signal *head;	512	WL head;
328	sig_atomic_t gotsig;	513	sig_atomic_t volatile gotsig;
329	} ANSIG;	514	} ANSIG;
330		515
331	static ANSIG *signals;	516	static ANSIG *signals;
332	static int signalmax;	517	static int signalmax;
333		518
334	static int sigpipe [2];	519	static int sigpipe [2];
335	static sig_atomic_t gotsig;	520	static sig_atomic_t volatile gotsig;
336	static struct ev_io sigev;	521	static struct ev_io sigev;
337		522
338	static void	523	static void
339	signals_init (ANSIG *base, int count)	524	signals_init (ANSIG *base, int count)
340	{	525	{
…		…
348	}	533	}
349		534
350	static void	535	static void
351	sighandler (int signum)	536	sighandler (int signum)
352	{	537	{
		538	#if WIN32
		539	signal (signum, sighandler);
		540	#endif
		541
353	signals [signum - 1].gotsig = 1;	542	signals [signum - 1].gotsig = 1;
354		543
355	if (!gotsig)	544	if (!gotsig)
356	{	545	{
		546	int old_errno = errno;
357	gotsig = 1;	547	gotsig = 1;
		548	#ifdef WIN32
		549	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		550	#else
358	write (sigpipe [1], &gotsig, 1);	551	write (sigpipe [1], &signum, 1);
		552	#endif
		553	errno = old_errno;
359	}	554	}
360	}	555	}
361		556
362	static void	557	static void
363	sigcb (struct ev_io *iow, int revents)	558	sigcb (EV_P_ struct ev_io *iow, int revents)
364	{	559	{
365	struct ev_signal *w;	560	WL w;
366	int sig;	561	int signum;
367		562
		563	#ifdef WIN32
		564	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		565	#else
		566	read (sigpipe [0], &revents, 1);
		567	#endif
368	gotsig = 0;	568	gotsig = 0;
369	read (sigpipe [0], &revents, 1);
370		569
371	for (sig = signalmax; sig--; )	570	for (signum = signalmax; signum--; )
372	if (signals [sig].gotsig)	571	if (signals [signum].gotsig)
373	{	572	{
374	signals [sig].gotsig = 0;	573	signals [signum].gotsig = 0;
375		574
376	for (w = signals [sig].head; w; w = w->next)	575	for (w = signals [signum].head; w; w = w->next)
377	event ((W)w, EV_SIGNAL);	576	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
378	}	577	}
379	}	578	}
380		579
381	static void	580	static void
382	siginit (void)	581	siginit (EV_P)
383	{	582	{
		583	#ifndef WIN32
384	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	584	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
385	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	585	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
386		586
387	/* rather than sort out wether we really need nb, set it */	587	/* rather than sort out wether we really need nb, set it */
388	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	588	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
389	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	589	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		590	#endif
390		591
391	ev_io_set (&sigev, sigpipe [0], EV_READ);	592	ev_io_set (&sigev, sigpipe [0], EV_READ);
392	ev_io_start (&sigev);	593	ev_io_start (EV_A_ &sigev);
		594	ev_unref (EV_A); /* child watcher should not keep loop alive */
393	}	595	}
394		596
395	/*****************************************************************************/	597	/*****************************************************************************/
396		598
397	static struct ev_idle **idles;
398	static int idlemax, idlecnt;
399
400	static struct ev_prepare **prepares;
401	static int preparemax, preparecnt;
402
403	static struct ev_check **checks;
404	static int checkmax, checkcnt;
405
406	/*****************************************************************************/
407
408	static struct ev_child *childs [PID_HASHSIZE];	599	static struct ev_child *childs [PID_HASHSIZE];
		600
		601	#ifndef WIN32
		602
409	static struct ev_signal childev;	603	static struct ev_signal childev;
410		604
411	#ifndef WCONTINUED	605	#ifndef WCONTINUED
412	# define WCONTINUED 0	606	# define WCONTINUED 0
413	#endif	607	#endif
414		608
415	static void	609	static void
416	childcb (struct ev_signal *sw, int revents)	610	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
417	{	611	{
418	struct ev_child *w;	612	struct ev_child *w;
		613
		614	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		615	if (w->pid == pid || !w->pid)
		616	{
		617	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		618	w->rpid = pid;
		619	w->rstatus = status;
		620	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		621	}
		622	}
		623
		624	static void
		625	childcb (EV_P_ struct ev_signal *sw, int revents)
		626	{
419	int pid, status;	627	int pid, status;
420		628
421	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	629	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
422	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	630	{
423	if (w->pid == pid || w->pid == -1)	631	/* make sure we are called again until all childs have been reaped */
424	{	632	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
425	w->status = status;	633
426	event ((W)w, EV_CHILD);	634	child_reap (EV_A_ sw, pid, pid, status);
427	}	635	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		636	}
428	}	637	}
		638
		639	#endif
429		640
430	/*****************************************************************************/	641	/*****************************************************************************/
431		642
		643	#if EV_USE_KQUEUE
		644	# include "ev_kqueue.c"
		645	#endif
432	#if EV_USE_EPOLL	646	#if EV_USE_EPOLL
433	# include "ev_epoll.c"	647	# include "ev_epoll.c"
434	#endif	648	#endif
		649	#if EV_USE_POLL
		650	# include "ev_poll.c"
		651	#endif
435	#if EV_USE_SELECT	652	#if EV_USE_SELECT
436	# include "ev_select.c"	653	# include "ev_select.c"
437	#endif	654	#endif
438		655
439	int	656	int
…		…
446	ev_version_minor (void)	663	ev_version_minor (void)
447	{	664	{
448	return EV_VERSION_MINOR;	665	return EV_VERSION_MINOR;
449	}	666	}
450		667
451	int ev_init (int flags)	668	/* return true if we are running with elevated privileges and should ignore env variables */
		669	static int
		670	enable_secure (void)
452	{	671	{
		672	#ifdef WIN32
		673	return 0;
		674	#else
		675	return getuid () != geteuid ()
		676	|| getgid () != getegid ();
		677	#endif
		678	}
		679
		680	int
		681	ev_method (EV_P)
		682	{
		683	return method;
		684	}
		685
		686	static void
		687	loop_init (EV_P_ int methods)
		688	{
453	if (!ev_method)	689	if (!method)
454	{	690	{
455	#if EV_USE_MONOTONIC	691	#if EV_USE_MONOTONIC
456	{	692	{
457	struct timespec ts;	693	struct timespec ts;
458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	694	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
459	have_monotonic = 1;	695	have_monotonic = 1;
460	}	696	}
461	#endif	697	#endif
462		698
463	ev_now = ev_time ();	699	rt_now = ev_time ();
464	now = get_clock ();	700	mn_now = get_clock ();
		701	now_floor = mn_now;
465	diff = ev_now - now;	702	rtmn_diff = rt_now - mn_now;
466		703
467	if (pipe (sigpipe))	704	if (methods == EVMETHOD_AUTO)
468	return 0;	705	if (!enable_secure () && getenv ("LIBEV_METHODS"))
469		706	methods = atoi (getenv ("LIBEV_METHODS"));
		707	else
470	ev_method = EVMETHOD_NONE;	708	methods = EVMETHOD_ANY;
		709
		710	method = 0;
		711	#if EV_USE_WIN32
		712	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		713	#endif
		714	#if EV_USE_KQUEUE
		715	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		716	#endif
471	#if EV_USE_EPOLL	717	#if EV_USE_EPOLL
472	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	718	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		719	#endif
		720	#if EV_USE_POLL
		721	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
473	#endif	722	#endif
474	#if EV_USE_SELECT	723	#if EV_USE_SELECT
475	if (ev_method == EVMETHOD_NONE) select_init (flags);	724	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
476	#endif	725	#endif
477		726
		727	ev_watcher_init (&sigev, sigcb);
		728	ev_set_priority (&sigev, EV_MAXPRI);
		729	}
		730	}
		731
		732	void
		733	loop_destroy (EV_P)
		734	{
		735	int i;
		736
		737	#if EV_USE_WIN32
		738	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		739	#endif
		740	#if EV_USE_KQUEUE
		741	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		742	#endif
		743	#if EV_USE_EPOLL
		744	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		745	#endif
		746	#if EV_USE_POLL
		747	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		748	#endif
		749	#if EV_USE_SELECT
		750	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		751	#endif
		752
		753	for (i = NUMPRI; i--; )
		754	array_free (pending, [i]);
		755
		756	/* have to use the microsoft-never-gets-it-right macro */
		757	array_free_microshit (fdchange);
		758	array_free_microshit (timer);
		759	array_free_microshit (periodic);
		760	array_free_microshit (idle);
		761	array_free_microshit (prepare);
		762	array_free_microshit (check);
		763
		764	method = 0;
		765	}
		766
		767	static void
		768	loop_fork (EV_P)
		769	{
		770	#if EV_USE_EPOLL
		771	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		772	#endif
		773	#if EV_USE_KQUEUE
		774	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		775	#endif
		776
		777	if (ev_is_active (&sigev))
		778	{
		779	/* default loop */
		780
		781	ev_ref (EV_A);
		782	ev_io_stop (EV_A_ &sigev);
		783	close (sigpipe [0]);
		784	close (sigpipe [1]);
		785
		786	while (pipe (sigpipe))
		787	syserr ("(libev) error creating pipe");
		788
		789	siginit (EV_A);
		790	}
		791
		792	postfork = 0;
		793	}
		794
		795	#if EV_MULTIPLICITY
		796	struct ev_loop *
		797	ev_loop_new (int methods)
		798	{
		799	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		800
		801	memset (loop, 0, sizeof (struct ev_loop));
		802
		803	loop_init (EV_A_ methods);
		804
		805	if (ev_method (EV_A))
		806	return loop;
		807
		808	return 0;
		809	}
		810
		811	void
		812	ev_loop_destroy (EV_P)
		813	{
		814	loop_destroy (EV_A);
		815	ev_free (loop);
		816	}
		817
		818	void
		819	ev_loop_fork (EV_P)
		820	{
		821	postfork = 1;
		822	}
		823
		824	#endif
		825
		826	#if EV_MULTIPLICITY
		827	struct ev_loop default_loop_struct;
		828	static struct ev_loop *default_loop;
		829
		830	struct ev_loop *
		831	#else
		832	static int default_loop;
		833
		834	int
		835	#endif
		836	ev_default_loop (int methods)
		837	{
		838	if (sigpipe [0] == sigpipe [1])
		839	if (pipe (sigpipe))
		840	return 0;
		841
		842	if (!default_loop)
		843	{
		844	#if EV_MULTIPLICITY
		845	struct ev_loop *loop = default_loop = &default_loop_struct;
		846	#else
		847	default_loop = 1;
		848	#endif
		849
		850	loop_init (EV_A_ methods);
		851
478	if (ev_method)	852	if (ev_method (EV_A))
479	{	853	{
480	ev_watcher_init (&sigev, sigcb);
481	siginit ();	854	siginit (EV_A);
482		855
		856	#ifndef WIN32
483	ev_signal_init (&childev, childcb, SIGCHLD);	857	ev_signal_init (&childev, childcb, SIGCHLD);
		858	ev_set_priority (&childev, EV_MAXPRI);
484	ev_signal_start (&childev);	859	ev_signal_start (EV_A_ &childev);
		860	ev_unref (EV_A); /* child watcher should not keep loop alive */
		861	#endif
485	}	862	}
		863	else
		864	default_loop = 0;
486	}	865	}
487		866
488	return ev_method;	867	return default_loop;
		868	}
		869
		870	void
		871	ev_default_destroy (void)
		872	{
		873	#if EV_MULTIPLICITY
		874	struct ev_loop *loop = default_loop;
		875	#endif
		876
		877	#ifndef WIN32
		878	ev_ref (EV_A); /* child watcher */
		879	ev_signal_stop (EV_A_ &childev);
		880	#endif
		881
		882	ev_ref (EV_A); /* signal watcher */
		883	ev_io_stop (EV_A_ &sigev);
		884
		885	close (sigpipe [0]); sigpipe [0] = 0;
		886	close (sigpipe [1]); sigpipe [1] = 0;
		887
		888	loop_destroy (EV_A);
		889	}
		890
		891	void
		892	ev_default_fork (void)
		893	{
		894	#if EV_MULTIPLICITY
		895	struct ev_loop *loop = default_loop;
		896	#endif
		897
		898	if (method)
		899	postfork = 1;
489	}	900	}
490		901
491	/*****************************************************************************/	902	/*****************************************************************************/
492		903
493	void
494	ev_prefork (void)
495	{
496	/* nop */
497	}
498
499	void
500	ev_postfork_parent (void)
501	{
502	/* nop */
503	}
504
505	void
506	ev_postfork_child (void)
507	{
508	#if EV_USE_EPOLL
509	if (ev_method == EVMETHOD_EPOLL)
510	epoll_postfork_child ();
511	#endif
512
513	ev_io_stop (&sigev);
514	close (sigpipe [0]);
515	close (sigpipe [1]);
516	pipe (sigpipe);
517	siginit ();
518	}
519
520	/*****************************************************************************/
521
522	static void	904	static int
		905	any_pending (EV_P)
		906	{
		907	int pri;
		908
		909	for (pri = NUMPRI; pri--; )
		910	if (pendingcnt [pri])
		911	return 1;
		912
		913	return 0;
		914	}
		915
		916	static void
523	call_pending (void)	917	call_pending (EV_P)
524	{	918	{
		919	int pri;
		920
		921	for (pri = NUMPRI; pri--; )
525	while (pendingcnt)	922	while (pendingcnt [pri])
526	{	923	{
527	ANPENDING *p = pendings + --pendingcnt;	924	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
528		925
529	if (p->w)	926	if (p->w)
530	{	927	{
531	p->w->pending = 0;	928	p->w->pending = 0;
532	p->w->cb (p->w, p->events);	929	p->w->cb (EV_A_ p->w, p->events);
533	}	930	}
534	}	931	}
535	}	932	}
536		933
537	static void	934	static void
538	timers_reify (void)	935	timers_reify (EV_P)
539	{	936	{
540	while (timercnt && timers [0]->at <= now)	937	while (timercnt && ((WT)timers [0])->at <= mn_now)
541	{	938	{
542	struct ev_timer *w = timers [0];	939	struct ev_timer *w = timers [0];
		940
		941	assert (("inactive timer on timer heap detected", ev_is_active (w)));
543		942
544	/* first reschedule or stop timer */	943	/* first reschedule or stop timer */
545	if (w->repeat)	944	if (w->repeat)
546	{	945	{
547	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	946	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
548	w->at = now + w->repeat;	947	((WT)w)->at = mn_now + w->repeat;
549	downheap ((WT *)timers, timercnt, 0);	948	downheap ((WT *)timers, timercnt, 0);
550	}	949	}
551	else	950	else
552	ev_timer_stop (w); /* nonrepeating: stop timer */	951	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
553		952
554	event ((W)w, EV_TIMEOUT);	953	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
555	}	954	}
556	}	955	}
557		956
558	static void	957	static void
559	periodics_reify (void)	958	periodics_reify (EV_P)
560	{	959	{
561	while (periodiccnt && periodics [0]->at <= ev_now)	960	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
562	{	961	{
563	struct ev_periodic *w = periodics [0];	962	struct ev_periodic *w = periodics [0];
564		963
		964	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		965
565	/* first reschedule or stop timer */	966	/* first reschedule or stop timer */
566	if (w->interval)	967	if (w->reschedule_cb)
567	{	968	{
		969	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		970
		971	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		972	downheap ((WT *)periodics, periodiccnt, 0);
		973	}
		974	else if (w->interval)
		975	{
568	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	976	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
569	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	977	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
570	downheap ((WT *)periodics, periodiccnt, 0);	978	downheap ((WT *)periodics, periodiccnt, 0);
571	}	979	}
572	else	980	else
573	ev_periodic_stop (w); /* nonrepeating: stop timer */	981	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
574		982
575	event ((W)w, EV_PERIODIC);	983	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
576	}	984	}
577	}	985	}
578		986
579	static void	987	static void
580	periodics_reschedule (ev_tstamp diff)	988	periodics_reschedule (EV_P)
581	{	989	{
582	int i;	990	int i;
583		991
584	/* adjust periodics after time jump */	992	/* adjust periodics after time jump */
585	for (i = 0; i < periodiccnt; ++i)	993	for (i = 0; i < periodiccnt; ++i)
586	{	994	{
587	struct ev_periodic *w = periodics [i];	995	struct ev_periodic *w = periodics [i];
588		996
		997	if (w->reschedule_cb)
		998	((WT)w)->at = w->reschedule_cb (w, rt_now);
589	if (w->interval)	999	else if (w->interval)
		1000	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1001	}
		1002
		1003	/* now rebuild the heap */
		1004	for (i = periodiccnt >> 1; i--; )
		1005	downheap ((WT *)periodics, periodiccnt, i);
		1006	}
		1007
		1008	inline int
		1009	time_update_monotonic (EV_P)
		1010	{
		1011	mn_now = get_clock ();
		1012
		1013	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1014	{
		1015	rt_now = rtmn_diff + mn_now;
		1016	return 0;
		1017	}
		1018	else
		1019	{
		1020	now_floor = mn_now;
		1021	rt_now = ev_time ();
		1022	return 1;
		1023	}
		1024	}
		1025
		1026	static void
		1027	time_update (EV_P)
		1028	{
		1029	int i;
		1030
		1031	#if EV_USE_MONOTONIC
		1032	if (expect_true (have_monotonic))
		1033	{
		1034	if (time_update_monotonic (EV_A))
590	{	1035	{
591	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1036	ev_tstamp odiff = rtmn_diff;
592		1037
593	if (fabs (diff) >= 1e-4)	1038	for (i = 4; --i; ) /* loop a few times, before making important decisions */
594	{	1039	{
595	ev_periodic_stop (w);	1040	rtmn_diff = rt_now - mn_now;
596	ev_periodic_start (w);
597		1041
598	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1042	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1043	return; /* all is well */
		1044
		1045	rt_now = ev_time ();
		1046	mn_now = get_clock ();
		1047	now_floor = mn_now;
599	}	1048	}
		1049
		1050	periodics_reschedule (EV_A);
		1051	/* no timer adjustment, as the monotonic clock doesn't jump */
		1052	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
600	}	1053	}
601	}	1054	}
602	}	1055	else
603		1056	#endif
604	static void	1057	{
605	time_update (void)
606	{
607	int i;
608
609	ev_now = ev_time ();	1058	rt_now = ev_time ();
610		1059
611	if (have_monotonic)	1060	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
612	{
613	ev_tstamp odiff = diff;
614
615	for (i = 4; --i; ) /* loop a few times, before making important decisions */
616	{	1061	{
617	now = get_clock ();
618	diff = ev_now - now;
619
620	if (fabs (odiff - diff) < MIN_TIMEJUMP)
621	return; /* all is well */
622
623	ev_now = ev_time ();
624	}
625
626	periodics_reschedule (diff - odiff);
627	/* no timer adjustment, as the monotonic clock doesn't jump */
628	}
629	else
630	{
631	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
632	{
633	periodics_reschedule (ev_now - now);	1062	periodics_reschedule (EV_A);
634		1063
635	/* adjust timers. this is easy, as the offset is the same for all */	1064	/* adjust timers. this is easy, as the offset is the same for all */
636	for (i = 0; i < timercnt; ++i)	1065	for (i = 0; i < timercnt; ++i)
637	timers [i]->at += diff;	1066	((WT)timers [i])->at += rt_now - mn_now;
638	}	1067	}
639		1068
640	now = ev_now;	1069	mn_now = rt_now;
641	}	1070	}
642	}	1071	}
643		1072
644	int ev_loop_done;	1073	void
		1074	ev_ref (EV_P)
		1075	{
		1076	++activecnt;
		1077	}
645		1078
		1079	void
		1080	ev_unref (EV_P)
		1081	{
		1082	--activecnt;
		1083	}
		1084
		1085	static int loop_done;
		1086
		1087	void
646	void ev_loop (int flags)	1088	ev_loop (EV_P_ int flags)
647	{	1089	{
648	double block;	1090	double block;
649	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1091	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
650		1092
651	do	1093	do
652	{	1094	{
653	/* queue check watchers (and execute them) */	1095	/* queue check watchers (and execute them) */
654	if (preparecnt)	1096	if (expect_false (preparecnt))
655	{	1097	{
656	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1098	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
657	call_pending ();	1099	call_pending (EV_A);
658	}	1100	}
659		1101
		1102	/* we might have forked, so reify kernel state if necessary */
		1103	if (expect_false (postfork))
		1104	loop_fork (EV_A);
		1105
660	/* update fd-related kernel structures */	1106	/* update fd-related kernel structures */
661	fd_reify ();	1107	fd_reify (EV_A);
662		1108
663	/* calculate blocking time */	1109	/* calculate blocking time */
664		1110
665	/* we only need this for !monotonic clockor timers, but as we basically	1111	/* we only need this for !monotonic clock or timers, but as we basically
666	always have timers, we just calculate it always */	1112	always have timers, we just calculate it always */
		1113	#if EV_USE_MONOTONIC
		1114	if (expect_true (have_monotonic))
		1115	time_update_monotonic (EV_A);
		1116	else
		1117	#endif
		1118	{
667	ev_now = ev_time ();	1119	rt_now = ev_time ();
		1120	mn_now = rt_now;
		1121	}
668		1122
669	if (flags & EVLOOP_NONBLOCK || idlecnt)	1123	if (flags & EVLOOP_NONBLOCK || idlecnt)
670	block = 0.;	1124	block = 0.;
671	else	1125	else
672	{	1126	{
673	block = MAX_BLOCKTIME;	1127	block = MAX_BLOCKTIME;
674		1128
675	if (timercnt)	1129	if (timercnt)
676	{	1130	{
677	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1131	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
678	if (block > to) block = to;	1132	if (block > to) block = to;
679	}	1133	}
680		1134
681	if (periodiccnt)	1135	if (periodiccnt)
682	{	1136	{
683	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1137	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
684	if (block > to) block = to;	1138	if (block > to) block = to;
685	}	1139	}
686		1140
687	if (block < 0.) block = 0.;	1141	if (block < 0.) block = 0.;
688	}	1142	}
689		1143
690	method_poll (block);	1144	method_poll (EV_A_ block);
691		1145
692	/* update ev_now, do magic */	1146	/* update rt_now, do magic */
693	time_update ();	1147	time_update (EV_A);
694		1148
695	/* queue pending timers and reschedule them */	1149	/* queue pending timers and reschedule them */
696	timers_reify (); /* relative timers called last */	1150	timers_reify (EV_A); /* relative timers called last */
697	periodics_reify (); /* absolute timers called first */	1151	periodics_reify (EV_A); /* absolute timers called first */
698		1152
699	/* queue idle watchers unless io or timers are pending */	1153	/* queue idle watchers unless io or timers are pending */
700	if (!pendingcnt)	1154	if (idlecnt && !any_pending (EV_A))
701	queue_events ((W *)idles, idlecnt, EV_IDLE);	1155	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
702		1156
703	/* queue check watchers, to be executed first */	1157	/* queue check watchers, to be executed first */
704	if (checkcnt)	1158	if (checkcnt)
705	queue_events ((W *)checks, checkcnt, EV_CHECK);	1159	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
706		1160
707	call_pending ();	1161	call_pending (EV_A);
708	}	1162	}
709	while (!ev_loop_done);	1163	while (activecnt && !loop_done);
710		1164
711	if (ev_loop_done != 2)	1165	if (loop_done != 2)
712	ev_loop_done = 0;	1166	loop_done = 0;
		1167	}
		1168
		1169	void
		1170	ev_unloop (EV_P_ int how)
		1171	{
		1172	loop_done = how;
713	}	1173	}
714		1174
715	/*****************************************************************************/	1175	/*****************************************************************************/
716		1176
717	static void	1177	inline void
718	wlist_add (WL *head, WL elem)	1178	wlist_add (WL *head, WL elem)
719	{	1179	{
720	elem->next = *head;	1180	elem->next = *head;
721	*head = elem;	1181	*head = elem;
722	}	1182	}
723		1183
724	static void	1184	inline void
725	wlist_del (WL *head, WL elem)	1185	wlist_del (WL *head, WL elem)
726	{	1186	{
727	while (*head)	1187	while (*head)
728	{	1188	{
729	if (*head == elem)	1189	if (*head == elem)
…		…
734		1194
735	head = &(*head)->next;	1195	head = &(*head)->next;
736	}	1196	}
737	}	1197	}
738		1198
739	static void	1199	inline void
740	ev_clear_pending (W w)	1200	ev_clear_pending (EV_P_ W w)
741	{	1201	{
742	if (w->pending)	1202	if (w->pending)
743	{	1203	{
744	pendings [w->pending - 1].w = 0;	1204	pendings [ABSPRI (w)][w->pending - 1].w = 0;
745	w->pending = 0;	1205	w->pending = 0;
746	}	1206	}
747	}	1207	}
748		1208
749	static void	1209	inline void
750	ev_start (W w, int active)	1210	ev_start (EV_P_ W w, int active)
751	{	1211	{
		1212	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1213	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1214
752	w->active = active;	1215	w->active = active;
		1216	ev_ref (EV_A);
753	}	1217	}
754		1218
755	static void	1219	inline void
756	ev_stop (W w)	1220	ev_stop (EV_P_ W w)
757	{	1221	{
		1222	ev_unref (EV_A);
758	w->active = 0;	1223	w->active = 0;
759	}	1224	}
760		1225
761	/*****************************************************************************/	1226	/*****************************************************************************/
762		1227
763	void	1228	void
764	ev_io_start (struct ev_io *w)	1229	ev_io_start (EV_P_ struct ev_io *w)
765	{	1230	{
		1231	int fd = w->fd;
		1232
766	if (ev_is_active (w))	1233	if (ev_is_active (w))
767	return;	1234	return;
768		1235
769	int fd = w->fd;
770
771	assert (("ev_io_start called with negative fd", fd >= 0));	1236	assert (("ev_io_start called with negative fd", fd >= 0));
772		1237
773	ev_start ((W)w, 1);	1238	ev_start (EV_A_ (W)w, 1);
774	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1239	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
775	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1240	wlist_add ((WL *)&anfds[fd].head, (WL)w);
776		1241
777	fd_change (fd);	1242	fd_change (EV_A_ fd);
778	}	1243	}
779		1244
780	void	1245	void
781	ev_io_stop (struct ev_io *w)	1246	ev_io_stop (EV_P_ struct ev_io *w)
782	{	1247	{
783	ev_clear_pending ((W)w);	1248	ev_clear_pending (EV_A_ (W)w);
784	if (!ev_is_active (w))	1249	if (!ev_is_active (w))
785	return;	1250	return;
786		1251
787	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1252	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
788	ev_stop ((W)w);	1253	ev_stop (EV_A_ (W)w);
789		1254
790	fd_change (w->fd);	1255	fd_change (EV_A_ w->fd);
791	}	1256	}
792		1257
793	void	1258	void
794	ev_timer_start (struct ev_timer *w)	1259	ev_timer_start (EV_P_ struct ev_timer *w)
795	{	1260	{
796	if (ev_is_active (w))	1261	if (ev_is_active (w))
797	return;	1262	return;
798		1263
799	w->at += now;	1264	((WT)w)->at += mn_now;
800		1265
801	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1266	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
802		1267
803	ev_start ((W)w, ++timercnt);	1268	ev_start (EV_A_ (W)w, ++timercnt);
804	array_needsize (timers, timermax, timercnt, );	1269	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
805	timers [timercnt - 1] = w;	1270	timers [timercnt - 1] = w;
806	upheap ((WT *)timers, timercnt - 1);	1271	upheap ((WT *)timers, timercnt - 1);
807	}
808		1272
		1273	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1274	}
		1275
809	void	1276	void
810	ev_timer_stop (struct ev_timer *w)	1277	ev_timer_stop (EV_P_ struct ev_timer *w)
811	{	1278	{
812	ev_clear_pending ((W)w);	1279	ev_clear_pending (EV_A_ (W)w);
813	if (!ev_is_active (w))	1280	if (!ev_is_active (w))
814	return;	1281	return;
815		1282
		1283	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1284
816	if (w->active < timercnt--)	1285	if (((W)w)->active < timercnt--)
817	{	1286	{
818	timers [w->active - 1] = timers [timercnt];	1287	timers [((W)w)->active - 1] = timers [timercnt];
819	downheap ((WT *)timers, timercnt, w->active - 1);	1288	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
820	}	1289	}
821		1290
822	w->at = w->repeat;	1291	((WT)w)->at = w->repeat;
823		1292
824	ev_stop ((W)w);	1293	ev_stop (EV_A_ (W)w);
825	}	1294	}
826		1295
827	void	1296	void
828	ev_timer_again (struct ev_timer *w)	1297	ev_timer_again (EV_P_ struct ev_timer *w)
829	{	1298	{
830	if (ev_is_active (w))	1299	if (ev_is_active (w))
831	{	1300	{
832	if (w->repeat)	1301	if (w->repeat)
833	{	1302	{
834	w->at = now + w->repeat;	1303	((WT)w)->at = mn_now + w->repeat;
835	downheap ((WT *)timers, timercnt, w->active - 1);	1304	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
836	}	1305	}
837	else	1306	else
838	ev_timer_stop (w);	1307	ev_timer_stop (EV_A_ w);
839	}	1308	}
840	else if (w->repeat)	1309	else if (w->repeat)
841	ev_timer_start (w);	1310	ev_timer_start (EV_A_ w);
842	}	1311	}
843		1312
844	void	1313	void
845	ev_periodic_start (struct ev_periodic *w)	1314	ev_periodic_start (EV_P_ struct ev_periodic *w)
846	{	1315	{
847	if (ev_is_active (w))	1316	if (ev_is_active (w))
848	return;	1317	return;
849		1318
		1319	if (w->reschedule_cb)
		1320	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1321	else if (w->interval)
		1322	{
850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1323	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
851
852	/* this formula differs from the one in periodic_reify because we do not always round up */	1324	/* this formula differs from the one in periodic_reify because we do not always round up */
853	if (w->interval)
854	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1325	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1326	}
855		1327
856	ev_start ((W)w, ++periodiccnt);	1328	ev_start (EV_A_ (W)w, ++periodiccnt);
857	array_needsize (periodics, periodicmax, periodiccnt, );	1329	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
858	periodics [periodiccnt - 1] = w;	1330	periodics [periodiccnt - 1] = w;
859	upheap ((WT *)periodics, periodiccnt - 1);	1331	upheap ((WT *)periodics, periodiccnt - 1);
860	}
861		1332
		1333	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1334	}
		1335
862	void	1336	void
863	ev_periodic_stop (struct ev_periodic *w)	1337	ev_periodic_stop (EV_P_ struct ev_periodic *w)
864	{	1338	{
865	ev_clear_pending ((W)w);	1339	ev_clear_pending (EV_A_ (W)w);
866	if (!ev_is_active (w))	1340	if (!ev_is_active (w))
867	return;	1341	return;
868		1342
		1343	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1344
869	if (w->active < periodiccnt--)	1345	if (((W)w)->active < periodiccnt--)
870	{	1346	{
871	periodics [w->active - 1] = periodics [periodiccnt];	1347	periodics [((W)w)->active - 1] = periodics [periodiccnt];
872	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1348	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
873	}	1349	}
874		1350
875	ev_stop ((W)w);	1351	ev_stop (EV_A_ (W)w);
876	}	1352	}
877		1353
878	void	1354	void
		1355	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1356	{
		1357	ev_periodic_stop (EV_A_ w);
		1358	ev_periodic_start (EV_A_ w);
		1359	}
		1360
		1361	void
879	ev_signal_start (struct ev_signal *w)	1362	ev_idle_start (EV_P_ struct ev_idle *w)
880	{	1363	{
881	if (ev_is_active (w))	1364	if (ev_is_active (w))
882	return;	1365	return;
883		1366
		1367	ev_start (EV_A_ (W)w, ++idlecnt);
		1368	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1369	idles [idlecnt - 1] = w;
		1370	}
		1371
		1372	void
		1373	ev_idle_stop (EV_P_ struct ev_idle *w)
		1374	{
		1375	ev_clear_pending (EV_A_ (W)w);
		1376	if (ev_is_active (w))
		1377	return;
		1378
		1379	idles [((W)w)->active - 1] = idles [--idlecnt];
		1380	ev_stop (EV_A_ (W)w);
		1381	}
		1382
		1383	void
		1384	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1385	{
		1386	if (ev_is_active (w))
		1387	return;
		1388
		1389	ev_start (EV_A_ (W)w, ++preparecnt);
		1390	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1391	prepares [preparecnt - 1] = w;
		1392	}
		1393
		1394	void
		1395	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1396	{
		1397	ev_clear_pending (EV_A_ (W)w);
		1398	if (ev_is_active (w))
		1399	return;
		1400
		1401	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1402	ev_stop (EV_A_ (W)w);
		1403	}
		1404
		1405	void
		1406	ev_check_start (EV_P_ struct ev_check *w)
		1407	{
		1408	if (ev_is_active (w))
		1409	return;
		1410
		1411	ev_start (EV_A_ (W)w, ++checkcnt);
		1412	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1413	checks [checkcnt - 1] = w;
		1414	}
		1415
		1416	void
		1417	ev_check_stop (EV_P_ struct ev_check *w)
		1418	{
		1419	ev_clear_pending (EV_A_ (W)w);
		1420	if (ev_is_active (w))
		1421	return;
		1422
		1423	checks [((W)w)->active - 1] = checks [--checkcnt];
		1424	ev_stop (EV_A_ (W)w);
		1425	}
		1426
		1427	#ifndef SA_RESTART
		1428	# define SA_RESTART 0
		1429	#endif
		1430
		1431	void
		1432	ev_signal_start (EV_P_ struct ev_signal *w)
		1433	{
		1434	#if EV_MULTIPLICITY
		1435	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1436	#endif
		1437	if (ev_is_active (w))
		1438	return;
		1439
884	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1440	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
885		1441
886	ev_start ((W)w, 1);	1442	ev_start (EV_A_ (W)w, 1);
887	array_needsize (signals, signalmax, w->signum, signals_init);	1443	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
888	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1444	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
889		1445
890	if (!w->next)	1446	if (!((WL)w)->next)
891	{	1447	{
		1448	#if WIN32
		1449	signal (w->signum, sighandler);
		1450	#else
892	struct sigaction sa;	1451	struct sigaction sa;
893	sa.sa_handler = sighandler;	1452	sa.sa_handler = sighandler;
894	sigfillset (&sa.sa_mask);	1453	sigfillset (&sa.sa_mask);
895	sa.sa_flags = 0;	1454	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
896	sigaction (w->signum, &sa, 0);	1455	sigaction (w->signum, &sa, 0);
		1456	#endif
897	}	1457	}
898	}	1458	}
899		1459
900	void	1460	void
901	ev_signal_stop (struct ev_signal *w)	1461	ev_signal_stop (EV_P_ struct ev_signal *w)
902	{	1462	{
903	ev_clear_pending ((W)w);	1463	ev_clear_pending (EV_A_ (W)w);
904	if (!ev_is_active (w))	1464	if (!ev_is_active (w))
905	return;	1465	return;
906		1466
907	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1467	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
908	ev_stop ((W)w);	1468	ev_stop (EV_A_ (W)w);
909		1469
910	if (!signals [w->signum - 1].head)	1470	if (!signals [w->signum - 1].head)
911	signal (w->signum, SIG_DFL);	1471	signal (w->signum, SIG_DFL);
912	}	1472	}
913		1473
914	void	1474	void
915	ev_idle_start (struct ev_idle *w)	1475	ev_child_start (EV_P_ struct ev_child *w)
916	{	1476	{
		1477	#if EV_MULTIPLICITY
		1478	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1479	#endif
917	if (ev_is_active (w))	1480	if (ev_is_active (w))
918	return;	1481	return;
919		1482
920	ev_start ((W)w, ++idlecnt);	1483	ev_start (EV_A_ (W)w, 1);
921	array_needsize (idles, idlemax, idlecnt, );	1484	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
922	idles [idlecnt - 1] = w;
923	}	1485	}
924		1486
925	void	1487	void
926	ev_idle_stop (struct ev_idle *w)	1488	ev_child_stop (EV_P_ struct ev_child *w)
927	{	1489	{
928	ev_clear_pending ((W)w);	1490	ev_clear_pending (EV_A_ (W)w);
929	if (ev_is_active (w))	1491	if (ev_is_active (w))
930	return;	1492	return;
931		1493
932	idles [w->active - 1] = idles [--idlecnt];
933	ev_stop ((W)w);
934	}
935
936	void
937	ev_prepare_start (struct ev_prepare *w)
938	{
939	if (ev_is_active (w))
940	return;
941
942	ev_start ((W)w, ++preparecnt);
943	array_needsize (prepares, preparemax, preparecnt, );
944	prepares [preparecnt - 1] = w;
945	}
946
947	void
948	ev_prepare_stop (struct ev_prepare *w)
949	{
950	ev_clear_pending ((W)w);
951	if (ev_is_active (w))
952	return;
953
954	prepares [w->active - 1] = prepares [--preparecnt];
955	ev_stop ((W)w);
956	}
957
958	void
959	ev_check_start (struct ev_check *w)
960	{
961	if (ev_is_active (w))
962	return;
963
964	ev_start ((W)w, ++checkcnt);
965	array_needsize (checks, checkmax, checkcnt, );
966	checks [checkcnt - 1] = w;
967	}
968
969	void
970	ev_check_stop (struct ev_check *w)
971	{
972	ev_clear_pending ((W)w);
973	if (ev_is_active (w))
974	return;
975
976	checks [w->active - 1] = checks [--checkcnt];
977	ev_stop ((W)w);
978	}
979
980	void
981	ev_child_start (struct ev_child *w)
982	{
983	if (ev_is_active (w))
984	return;
985
986	ev_start ((W)w, 1);
987	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
988	}
989
990	void
991	ev_child_stop (struct ev_child *w)
992	{
993	ev_clear_pending ((W)w);
994	if (ev_is_active (w))
995	return;
996
997	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1494	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
998	ev_stop ((W)w);	1495	ev_stop (EV_A_ (W)w);
999	}	1496	}
1000		1497
1001	/*****************************************************************************/	1498	/*****************************************************************************/
1002		1499
1003	struct ev_once	1500	struct ev_once
…		…
1007	void (*cb)(int revents, void *arg);	1504	void (*cb)(int revents, void *arg);
1008	void *arg;	1505	void *arg;
1009	};	1506	};
1010		1507
1011	static void	1508	static void
1012	once_cb (struct ev_once *once, int revents)	1509	once_cb (EV_P_ struct ev_once *once, int revents)
1013	{	1510	{
1014	void (*cb)(int revents, void *arg) = once->cb;	1511	void (*cb)(int revents, void *arg) = once->cb;
1015	void *arg = once->arg;	1512	void *arg = once->arg;
1016		1513
1017	ev_io_stop (&once->io);	1514	ev_io_stop (EV_A_ &once->io);
1018	ev_timer_stop (&once->to);	1515	ev_timer_stop (EV_A_ &once->to);
1019	free (once);	1516	ev_free (once);
1020		1517
1021	cb (revents, arg);	1518	cb (revents, arg);
1022	}	1519	}
1023		1520
1024	static void	1521	static void
1025	once_cb_io (struct ev_io *w, int revents)	1522	once_cb_io (EV_P_ struct ev_io *w, int revents)
1026	{	1523	{
1027	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1524	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1028	}	1525	}
1029		1526
1030	static void	1527	static void
1031	once_cb_to (struct ev_timer *w, int revents)	1528	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1032	{	1529	{
1033	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1530	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1034	}	1531	}
1035		1532
1036	void	1533	void
1037	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1534	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1038	{	1535	{
1039	struct ev_once *once = malloc (sizeof (struct ev_once));	1536	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1040		1537
1041	if (!once)	1538	if (!once)
1042	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1539	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1043	else	1540	else
1044	{	1541	{
…		…
1047		1544
1048	ev_watcher_init (&once->io, once_cb_io);	1545	ev_watcher_init (&once->io, once_cb_io);
1049	if (fd >= 0)	1546	if (fd >= 0)
1050	{	1547	{
1051	ev_io_set (&once->io, fd, events);	1548	ev_io_set (&once->io, fd, events);
1052	ev_io_start (&once->io);	1549	ev_io_start (EV_A_ &once->io);
1053	}	1550	}
1054		1551
1055	ev_watcher_init (&once->to, once_cb_to);	1552	ev_watcher_init (&once->to, once_cb_to);
1056	if (timeout >= 0.)	1553	if (timeout >= 0.)
1057	{	1554	{
1058	ev_timer_set (&once->to, timeout, 0.);	1555	ev_timer_set (&once->to, timeout, 0.);
1059	ev_timer_start (&once->to);	1556	ev_timer_start (EV_A_ &once->to);
1060	}	1557	}
1061	}	1558	}
1062	}	1559	}
1063		1560
1064	/*****************************************************************************/
1065
1066	#if 0
1067
1068	struct ev_io wio;
1069
1070	static void
1071	sin_cb (struct ev_io *w, int revents)
1072	{
1073	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1074	}
1075
1076	static void
1077	ocb (struct ev_timer *w, int revents)
1078	{
1079	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1080	ev_timer_stop (w);
1081	ev_timer_start (w);
1082	}
1083
1084	static void
1085	scb (struct ev_signal *w, int revents)
1086	{
1087	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1088	ev_io_stop (&wio);
1089	ev_io_start (&wio);
1090	}
1091
1092	static void
1093	gcb (struct ev_signal *w, int revents)
1094	{
1095	fprintf (stderr, "generic %x\n", revents);
1096
1097	}
1098
1099	int main (void)
1100	{
1101	ev_init (0);
1102
1103	ev_io_init (&wio, sin_cb, 0, EV_READ);
1104	ev_io_start (&wio);
1105
1106	struct ev_timer t[10000];
1107
1108	#if 0
1109	int i;
1110	for (i = 0; i < 10000; ++i)
1111	{
1112	struct ev_timer *w = t + i;
1113	ev_watcher_init (w, ocb, i);
1114	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1115	ev_timer_start (w);
1116	if (drand48 () < 0.5)
1117	ev_timer_stop (w);
1118	}
1119	#endif
1120
1121	struct ev_timer t1;
1122	ev_timer_init (&t1, ocb, 5, 10);
1123	ev_timer_start (&t1);
1124
1125	struct ev_signal sig;
1126	ev_signal_init (&sig, scb, SIGQUIT);
1127	ev_signal_start (&sig);
1128
1129	struct ev_check cw;
1130	ev_check_init (&cw, gcb);
1131	ev_check_start (&cw);
1132
1133	struct ev_idle iw;
1134	ev_idle_init (&iw, gcb);
1135	ev_idle_start (&iw);
1136
1137	ev_loop (0);
1138
1139	return 0;
1140	}
1141
1142	#endif
1143
1144
1145
1146

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