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Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs.
Revision 1.79 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
		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	int events;
145	} ANFD;
146
147	static ANFD *anfds;
148	static int anfdmax;
149		307
150	static void	308	static void
151	anfds_init (ANFD *base, int count)	309	anfds_init (ANFD *base, int count)
152	{	310	{
153	while (count--)	311	while (count--)
154	{	312	{
155	base->head = 0;	313	base->head = 0;
156	base->events = EV_NONE;	314	base->events = EV_NONE;
		315	base->reify = 0;
		316
157	++base;	317	++base;
158	}	318	}
159	}	319	}
160		320
161	typedef struct	321	void
		322	ev_feed_event (EV_P_ void *w, int revents)
162	{	323	{
163	W w;	324	W w_ = (W)w;
164	int events;
165	} ANPENDING;
166		325
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void
171	event (W w, int events)
172	{
173	if (w->pending)	326	if (w_->pending)
174	{	327	{
175	pendings [w->pending - 1].events |= events;	328	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
176	return;	329	return;
177	}	330	}
178		331
179	w->pending = ++pendingcnt;	332	w_->pending = ++pendingcnt [ABSPRI (w_)];
180	array_needsize (pendings, pendingmax, pendingcnt, );	333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
181	pendings [pendingcnt - 1].w = w;	334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
182	pendings [pendingcnt - 1].events = events;	335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
183	}	336	}
184		337
185	static void	338	static void
186	queue_events (W *events, int eventcnt, int type)	339	queue_events (EV_P_ W *events, int eventcnt, int type)
187	{	340	{
188	int i;	341	int i;
189		342
190	for (i = 0; i < eventcnt; ++i)	343	for (i = 0; i < eventcnt; ++i)
191	event (events [i], type);	344	ev_feed_event (EV_A_ events [i], type);
192	}	345	}
193		346
194	static void	347	inline void
195	fd_event (int fd, int events)	348	fd_event (EV_P_ int fd, int revents)
196	{	349	{
197	ANFD *anfd = anfds + fd;	350	ANFD *anfd = anfds + fd;
198	struct ev_io *w;	351	struct ev_io *w;
199		352
200	for (w = anfd->head; w; w = w->next)	353	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
201	{	354	{
202	int ev = w->events & events;	355	int ev = w->events & revents;
203		356
204	if (ev)	357	if (ev)
205	event ((W)w, ev);	358	ev_feed_event (EV_A_ (W)w, ev);
206	}	359	}
		360	}
		361
		362	void
		363	ev_feed_fd_event (EV_P_ int fd, int revents)
		364	{
		365	fd_event (EV_A_ fd, revents);
207	}	366	}
208		367
209	/*****************************************************************************/	368	/*****************************************************************************/
210		369
211	static int *fdchanges;
212	static int fdchangemax, fdchangecnt;
213
214	static void	370	static void
215	fd_reify (void)	371	fd_reify (EV_P)
216	{	372	{
217	int i;	373	int i;
218		374
219	for (i = 0; i < fdchangecnt; ++i)	375	for (i = 0; i < fdchangecnt; ++i)
220	{	376	{
…		…
222	ANFD *anfd = anfds + fd;	378	ANFD *anfd = anfds + fd;
223	struct ev_io *w;	379	struct ev_io *w;
224		380
225	int events = 0;	381	int events = 0;
226		382
227	for (w = anfd->head; w; w = w->next)	383	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
228	events |= w->events;	384	events |= w->events;
229		385
230	anfd->events &= ~EV_REIFY;	386	anfd->reify = 0;
231		387
232	if (anfd->events != events)
233	{
234	method_modify (fd, anfd->events, events);	388	method_modify (EV_A_ fd, anfd->events, events);
235	anfd->events = events;	389	anfd->events = events;
236	}
237	}	390	}
238		391
239	fdchangecnt = 0;	392	fdchangecnt = 0;
240	}	393	}
241		394
242	static void	395	static void
243	fd_change (int fd)	396	fd_change (EV_P_ int fd)
244	{	397	{
245	if (anfds [fd].events & EV_REIFY || fdchangecnt < 0)	398	if (anfds [fd].reify)
246	return;	399	return;
247		400
248	anfds [fd].events |= EV_REIFY;	401	anfds [fd].reify = 1;
249		402
250	++fdchangecnt;	403	++fdchangecnt;
251	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	404	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
252	fdchanges [fdchangecnt - 1] = fd;	405	fdchanges [fdchangecnt - 1] = fd;
253	}	406	}
254		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
255	/* called on EBADF to verify fds */	430	/* called on EBADF to verify fds */
256	static void	431	static void
257	fd_recheck (void)	432	fd_ebadf (EV_P)
258	{	433	{
259	int fd;	434	int fd;
260		435
261	for (fd = 0; fd < anfdmax; ++fd)	436	for (fd = 0; fd < anfdmax; ++fd)
262	if (anfds [fd].events)	437	if (anfds [fd].events)
263	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	438	if (!fd_valid (fd) == -1 && errno == EBADF)
264	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)
265	{	450	{
266	ev_io_stop (anfds [fd].head);	451	fd_kill (EV_A_ fd);
267	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT);	452	return;
268	}	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	}
269	}	469	}
270		470
271	/*****************************************************************************/	471	/*****************************************************************************/
272		472
273	static struct ev_timer **timers;
274	static int timermax, timercnt;
275
276	static struct ev_periodic **periodics;
277	static int periodicmax, periodiccnt;
278
279	static void	473	static void
280	upheap (WT *timers, int k)	474	upheap (WT *heap, int k)
281	{	475	{
282	WT w = timers [k];	476	WT w = heap [k];
283		477
284	while (k && timers [k >> 1]->at > w->at)	478	while (k && heap [k >> 1]->at > w->at)
285	{	479	{
286	timers [k] = timers [k >> 1];	480	heap [k] = heap [k >> 1];
287	timers [k]->active = k + 1;	481	((W)heap [k])->active = k + 1;
288	k >>= 1;	482	k >>= 1;
289	}	483	}
290		484
291	timers [k] = w;	485	heap [k] = w;
292	timers [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
293		487
294	}	488	}
295		489
296	static void	490	static void
297	downheap (WT *timers, int N, int k)	491	downheap (WT *heap, int N, int k)
298	{	492	{
299	WT w = timers [k];	493	WT w = heap [k];
300		494
301	while (k < (N >> 1))	495	while (k < (N >> 1))
302	{	496	{
303	int j = k << 1;	497	int j = k << 1;
304		498
305	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	499	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
306	++j;	500	++j;
307		501
308	if (w->at <= timers [j]->at)	502	if (w->at <= heap [j]->at)
309	break;	503	break;
310		504
311	timers [k] = timers [j];	505	heap [k] = heap [j];
312	timers [k]->active = k + 1;	506	((W)heap [k])->active = k + 1;
313	k = j;	507	k = j;
314	}	508	}
315		509
316	timers [k] = w;	510	heap [k] = w;
317	timers [k]->active = k + 1;	511	((W)heap [k])->active = k + 1;
318	}	512	}
319		513
320	/*****************************************************************************/	514	/*****************************************************************************/
321		515
322	typedef struct	516	typedef struct
323	{	517	{
324	struct ev_signal *head;	518	WL head;
325	sig_atomic_t gotsig;	519	sig_atomic_t volatile gotsig;
326	} ANSIG;	520	} ANSIG;
327		521
328	static ANSIG *signals;	522	static ANSIG *signals;
329	static int signalmax;	523	static int signalmax;
330		524
331	static int sigpipe [2];	525	static int sigpipe [2];
332	static sig_atomic_t gotsig;	526	static sig_atomic_t volatile gotsig;
333	static struct ev_io sigev;	527	static struct ev_io sigev;
334		528
335	static void	529	static void
336	signals_init (ANSIG *base, int count)	530	signals_init (ANSIG *base, int count)
337	{	531	{
338	while (count--)	532	while (count--)
339	{	533	{
340	base->head = 0;	534	base->head = 0;
341	base->gotsig = 0;	535	base->gotsig = 0;
		536
342	++base;	537	++base;
343	}	538	}
344	}	539	}
345		540
346	static void	541	static void
347	sighandler (int signum)	542	sighandler (int signum)
348	{	543	{
		544	#if WIN32
		545	signal (signum, sighandler);
		546	#endif
		547
349	signals [signum - 1].gotsig = 1;	548	signals [signum - 1].gotsig = 1;
350		549
351	if (!gotsig)	550	if (!gotsig)
352	{	551	{
		552	int old_errno = errno;
353	gotsig = 1;	553	gotsig = 1;
		554	#ifdef WIN32
		555	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		556	#else
354	write (sigpipe [1], &gotsig, 1);	557	write (sigpipe [1], &signum, 1);
		558	#endif
		559	errno = old_errno;
355	}	560	}
356	}	561	}
357		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
358	static void	581	static void
359	sigcb (struct ev_io *iow, int revents)	582	sigcb (EV_P_ struct ev_io *iow, int revents)
360	{	583	{
361	struct ev_signal *w;	584	WL w;
362	int sig;	585	int signum;
363		586
		587	#ifdef WIN32
		588	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		589	#else
		590	read (sigpipe [0], &revents, 1);
		591	#endif
364	gotsig = 0;	592	gotsig = 0;
365	read (sigpipe [0], &revents, 1);
366		593
367	for (sig = signalmax; sig--; )	594	for (signum = signalmax; signum--; )
368	if (signals [sig].gotsig)	595	if (signals [signum].gotsig)
369	{	596	sigevent (EV_A_ signum + 1);
370	signals [sig].gotsig = 0;
371
372	for (w = signals [sig].head; w; w = w->next)
373	event ((W)w, EV_SIGNAL);
374	}
375	}	597	}
376		598
377	static void	599	static void
378	siginit (void)	600	siginit (EV_P)
379	{	601	{
		602	#ifndef WIN32
380	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	603	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
381	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	604	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
382		605
383	/* rather than sort out wether we really need nb, set it */	606	/* rather than sort out wether we really need nb, set it */
384	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	607	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
385	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	608	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		609	#endif
386		610
387	ev_io_set (&sigev, sigpipe [0], EV_READ);	611	ev_io_set (&sigev, sigpipe [0], EV_READ);
388	ev_io_start (&sigev);	612	ev_io_start (EV_A_ &sigev);
		613	ev_unref (EV_A); /* child watcher should not keep loop alive */
389	}	614	}
390		615
391	/*****************************************************************************/	616	/*****************************************************************************/
392		617
393	static struct ev_idle **idles;
394	static int idlemax, idlecnt;
395
396	static struct ev_prepare **prepares;
397	static int preparemax, preparecnt;
398
399	static struct ev_check **checks;
400	static int checkmax, checkcnt;
401
402	/*****************************************************************************/
403
404	static struct ev_child *childs [PID_HASHSIZE];	618	static struct ev_child *childs [PID_HASHSIZE];
		619
		620	#ifndef WIN32
		621
405	static struct ev_signal childev;	622	static struct ev_signal childev;
406		623
407	#ifndef WCONTINUED	624	#ifndef WCONTINUED
408	# define WCONTINUED 0	625	# define WCONTINUED 0
409	#endif	626	#endif
410		627
411	static void	628	static void
412	childcb (struct ev_signal *sw, int revents)	629	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
413	{	630	{
414	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	{
415	int pid, status;	646	int pid, status;
416		647
417	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	648	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
418	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	649	{
419	if (w->pid == pid || w->pid == -1)	650	/* make sure we are called again until all childs have been reaped */
420	{	651	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
421	w->status = status;	652
422	event ((W)w, EV_CHILD);	653	child_reap (EV_A_ sw, pid, pid, status);
423	}	654	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		655	}
424	}	656	}
		657
		658	#endif
425		659
426	/*****************************************************************************/	660	/*****************************************************************************/
427		661
		662	#if EV_USE_KQUEUE
		663	# include "ev_kqueue.c"
		664	#endif
428	#if EV_USE_EPOLL	665	#if EV_USE_EPOLL
429	# include "ev_epoll.c"	666	# include "ev_epoll.c"
430	#endif	667	#endif
		668	#if EV_USE_POLL
		669	# include "ev_poll.c"
		670	#endif
431	#if EV_USE_SELECT	671	#if EV_USE_SELECT
432	# include "ev_select.c"	672	# include "ev_select.c"
433	#endif	673	#endif
434		674
435	int	675	int
…		…
442	ev_version_minor (void)	682	ev_version_minor (void)
443	{	683	{
444	return EV_VERSION_MINOR;	684	return EV_VERSION_MINOR;
445	}	685	}
446		686
447	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)
448	{	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	{
449	if (!ev_method)	708	if (!method)
450	{	709	{
451	#if EV_USE_MONOTONIC	710	#if EV_USE_MONOTONIC
452	{	711	{
453	struct timespec ts;	712	struct timespec ts;
454	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	713	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
455	have_monotonic = 1;	714	have_monotonic = 1;
456	}	715	}
457	#endif	716	#endif
458		717
459	ev_now = ev_time ();	718	rt_now = ev_time ();
460	now = get_clock ();	719	mn_now = get_clock ();
		720	now_floor = mn_now;
461	diff = ev_now - now;	721	rtmn_diff = rt_now - mn_now;
462		722
463	if (pipe (sigpipe))	723	if (methods == EVMETHOD_AUTO)
464	return 0;	724	if (!enable_secure () && getenv ("LIBEV_METHODS"))
465		725	methods = atoi (getenv ("LIBEV_METHODS"));
		726	else
466	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
467	#if EV_USE_EPOLL	736	#if EV_USE_EPOLL
468	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);
469	#endif	741	#endif
470	#if EV_USE_SELECT	742	#if EV_USE_SELECT
471	if (ev_method == EVMETHOD_NONE) select_init (flags);	743	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
472	#endif	744	#endif
473		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
474	if (ev_method)	871	if (ev_method (EV_A))
475	{	872	{
476	ev_watcher_init (&sigev, sigcb);
477	siginit ();	873	siginit (EV_A);
478		874
		875	#ifndef WIN32
479	ev_signal_init (&childev, childcb, SIGCHLD);	876	ev_signal_init (&childev, childcb, SIGCHLD);
		877	ev_set_priority (&childev, EV_MAXPRI);
480	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
481	}	881	}
		882	else
		883	default_loop = 0;
482	}	884	}
483		885
484	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;
485	}	919	}
486		920
487	/*****************************************************************************/	921	/*****************************************************************************/
488		922
489	void
490	ev_prefork (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_parent (void)
497	{
498	/* nop */
499	}
500
501	void
502	ev_postfork_child (void)
503	{
504	#if EV_USE_EPOLL
505	if (ev_method == EVMETHOD_EPOLL)
506	epoll_postfork_child ();
507	#endif
508
509	ev_io_stop (&sigev);
510	close (sigpipe [0]);
511	close (sigpipe [1]);
512	pipe (sigpipe);
513	siginit ();
514	}
515
516	/*****************************************************************************/
517
518	static void	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
519	call_pending (void)	936	call_pending (EV_P)
520	{	937	{
		938	int pri;
		939
		940	for (pri = NUMPRI; pri--; )
521	while (pendingcnt)	941	while (pendingcnt [pri])
522	{	942	{
523	ANPENDING *p = pendings + --pendingcnt;	943	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
524		944
525	if (p->w)	945	if (p->w)
526	{	946	{
527	p->w->pending = 0;	947	p->w->pending = 0;
528	p->w->cb (p->w, p->events);	948	p->w->cb (EV_A_ p->w, p->events);
529	}	949	}
530	}	950	}
531	}	951	}
532		952
533	static void	953	static void
534	timers_reify (void)	954	timers_reify (EV_P)
535	{	955	{
536	while (timercnt && timers [0]->at <= now)	956	while (timercnt && ((WT)timers [0])->at <= mn_now)
537	{	957	{
538	struct ev_timer *w = timers [0];	958	struct ev_timer *w = timers [0];
		959
		960	assert (("inactive timer on timer heap detected", ev_is_active (w)));
539		961
540	/* first reschedule or stop timer */	962	/* first reschedule or stop timer */
541	if (w->repeat)	963	if (w->repeat)
542	{	964	{
		965	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
543	w->at = now + w->repeat;	966	((WT)w)->at = mn_now + w->repeat;
544	assert (("timer timeout in the past, negative repeat?", w->at > now));
545	downheap ((WT *)timers, timercnt, 0);	967	downheap ((WT *)timers, timercnt, 0);
546	}	968	}
547	else	969	else
548	ev_timer_stop (w); /* nonrepeating: stop timer */	970	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
549		971
550	event ((W)w, EV_TIMEOUT);	972	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
551	}	973	}
552	}	974	}
553		975
554	static void	976	static void
555	periodics_reify (void)	977	periodics_reify (EV_P)
556	{	978	{
557	while (periodiccnt && periodics [0]->at <= ev_now)	979	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
558	{	980	{
559	struct ev_periodic *w = periodics [0];	981	struct ev_periodic *w = periodics [0];
560		982
		983	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		984
561	/* first reschedule or stop timer */	985	/* first reschedule or stop timer */
562	if (w->interval)	986	if (w->reschedule_cb)
563	{	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	{
564	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;
565	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));
566	downheap ((WT *)periodics, periodiccnt, 0);	997	downheap ((WT *)periodics, periodiccnt, 0);
567	}	998	}
568	else	999	else
569	ev_periodic_stop (w); /* nonrepeating: stop timer */	1000	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
570		1001
571	event ((W)w, EV_TIMEOUT);	1002	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
572	}	1003	}
573	}	1004	}
574		1005
575	static void	1006	static void
576	periodics_reschedule (ev_tstamp diff)	1007	periodics_reschedule (EV_P)
577	{	1008	{
578	int i;	1009	int i;
579		1010
580	/* adjust periodics after time jump */	1011	/* adjust periodics after time jump */
581	for (i = 0; i < periodiccnt; ++i)	1012	for (i = 0; i < periodiccnt; ++i)
582	{	1013	{
583	struct ev_periodic *w = periodics [i];	1014	struct ev_periodic *w = periodics [i];
584		1015
		1016	if (w->reschedule_cb)
		1017	((WT)w)->at = w->reschedule_cb (w, rt_now);
585	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))
586	{	1054	{
587	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1055	ev_tstamp odiff = rtmn_diff;
588		1056
589	if (fabs (diff) >= 1e-4)	1057	for (i = 4; --i; ) /* loop a few times, before making important decisions */
590	{	1058	{
591	ev_periodic_stop (w);	1059	rtmn_diff = rt_now - mn_now;
592	ev_periodic_start (w);
593		1060
594	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;
595	}	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) */
596	}	1072	}
597	}	1073	}
598	}	1074	else
599		1075	#endif
600	static void	1076	{
601	time_update (void)
602	{
603	int i;
604
605	ev_now = ev_time ();	1077	rt_now = ev_time ();
606		1078
607	if (have_monotonic)	1079	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
608	{
609	ev_tstamp odiff = diff;
610
611	for (i = 4; --i; ) /* loop a few times, before making important decisions */
612	{	1080	{
613	now = get_clock ();
614	diff = ev_now - now;
615
616	if (fabs (odiff - diff) < MIN_TIMEJUMP)
617	return; /* all is well */
618
619	ev_now = ev_time ();
620	}
621
622	periodics_reschedule (diff - odiff);
623	/* no timer adjustment, as the monotonic clock doesn't jump */
624	}
625	else
626	{
627	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
628	{
629	periodics_reschedule (ev_now - now);	1081	periodics_reschedule (EV_A);
630		1082
631	/* 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 */
632	for (i = 0; i < timercnt; ++i)	1084	for (i = 0; i < timercnt; ++i)
633	timers [i]->at += diff;	1085	((WT)timers [i])->at += rt_now - mn_now;
634	}	1086	}
635		1087
636	now = ev_now;	1088	mn_now = rt_now;
637	}	1089	}
638	}	1090	}
639		1091
640	int ev_loop_done;	1092	void
		1093	ev_ref (EV_P)
		1094	{
		1095	++activecnt;
		1096	}
641		1097
		1098	void
		1099	ev_unref (EV_P)
		1100	{
		1101	--activecnt;
		1102	}
		1103
		1104	static int loop_done;
		1105
		1106	void
642	void ev_loop (int flags)	1107	ev_loop (EV_P_ int flags)
643	{	1108	{
644	double block;	1109	double block;
645	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1110	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
646		1111
647	do	1112	do
648	{	1113	{
649	/* queue check watchers (and execute them) */	1114	/* queue check watchers (and execute them) */
650	if (preparecnt)	1115	if (expect_false (preparecnt))
651	{	1116	{
652	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1117	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
653	call_pending ();	1118	call_pending (EV_A);
654	}	1119	}
655		1120
		1121	/* we might have forked, so reify kernel state if necessary */
		1122	if (expect_false (postfork))
		1123	loop_fork (EV_A);
		1124
656	/* update fd-related kernel structures */	1125	/* update fd-related kernel structures */
657	fd_reify ();	1126	fd_reify (EV_A);
658		1127
659	/* calculate blocking time */	1128	/* calculate blocking time */
660		1129
661	/* 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
662	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	{
663	ev_now = ev_time ();	1138	rt_now = ev_time ();
		1139	mn_now = rt_now;
		1140	}
664		1141
665	if (flags & EVLOOP_NONBLOCK || idlecnt)	1142	if (flags & EVLOOP_NONBLOCK || idlecnt)
666	block = 0.;	1143	block = 0.;
667	else	1144	else
668	{	1145	{
669	block = MAX_BLOCKTIME;	1146	block = MAX_BLOCKTIME;
670		1147
671	if (timercnt)	1148	if (timercnt)
672	{	1149	{
673	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;
674	if (block > to) block = to;	1151	if (block > to) block = to;
675	}	1152	}
676		1153
677	if (periodiccnt)	1154	if (periodiccnt)
678	{	1155	{
679	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1156	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
680	if (block > to) block = to;	1157	if (block > to) block = to;
681	}	1158	}
682		1159
683	if (block < 0.) block = 0.;	1160	if (block < 0.) block = 0.;
684	}	1161	}
685		1162
686	method_poll (block);	1163	method_poll (EV_A_ block);
687		1164
688	/* update ev_now, do magic */	1165	/* update rt_now, do magic */
689	time_update ();	1166	time_update (EV_A);
690		1167
691	/* queue pending timers and reschedule them */	1168	/* queue pending timers and reschedule them */
692	timers_reify (); /* relative timers called last */	1169	timers_reify (EV_A); /* relative timers called last */
693	periodics_reify (); /* absolute timers called first */	1170	periodics_reify (EV_A); /* absolute timers called first */
694		1171
695	/* queue idle watchers unless io or timers are pending */	1172	/* queue idle watchers unless io or timers are pending */
696	if (!pendingcnt)	1173	if (idlecnt && !any_pending (EV_A))
697	queue_events ((W *)idles, idlecnt, EV_IDLE);	1174	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
698		1175
699	/* queue check watchers, to be executed first */	1176	/* queue check watchers, to be executed first */
700	if (checkcnt)	1177	if (checkcnt)
701	queue_events ((W *)checks, checkcnt, EV_CHECK);	1178	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
702		1179
703	call_pending ();	1180	call_pending (EV_A);
704	}	1181	}
705	while (!ev_loop_done);	1182	while (activecnt && !loop_done);
706		1183
707	if (ev_loop_done != 2)	1184	if (loop_done != 2)
708	ev_loop_done = 0;	1185	loop_done = 0;
		1186	}
		1187
		1188	void
		1189	ev_unloop (EV_P_ int how)
		1190	{
		1191	loop_done = how;
709	}	1192	}
710		1193
711	/*****************************************************************************/	1194	/*****************************************************************************/
712		1195
713	static void	1196	inline void
714	wlist_add (WL *head, WL elem)	1197	wlist_add (WL *head, WL elem)
715	{	1198	{
716	elem->next = *head;	1199	elem->next = *head;
717	*head = elem;	1200	*head = elem;
718	}	1201	}
719		1202
720	static void	1203	inline void
721	wlist_del (WL *head, WL elem)	1204	wlist_del (WL *head, WL elem)
722	{	1205	{
723	while (*head)	1206	while (*head)
724	{	1207	{
725	if (*head == elem)	1208	if (*head == elem)
…		…
730		1213
731	head = &(*head)->next;	1214	head = &(*head)->next;
732	}	1215	}
733	}	1216	}
734		1217
735	static void	1218	inline void
736	ev_clear (W w)	1219	ev_clear_pending (EV_P_ W w)
737	{	1220	{
738	if (w->pending)	1221	if (w->pending)
739	{	1222	{
740	pendings [w->pending - 1].w = 0;	1223	pendings [ABSPRI (w)][w->pending - 1].w = 0;
741	w->pending = 0;	1224	w->pending = 0;
742	}	1225	}
743	}	1226	}
744		1227
745	static void	1228	inline void
746	ev_start (W w, int active)	1229	ev_start (EV_P_ W w, int active)
747	{	1230	{
		1231	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1232	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1233
748	w->active = active;	1234	w->active = active;
		1235	ev_ref (EV_A);
749	}	1236	}
750		1237
751	static void	1238	inline void
752	ev_stop (W w)	1239	ev_stop (EV_P_ W w)
753	{	1240	{
		1241	ev_unref (EV_A);
754	w->active = 0;	1242	w->active = 0;
755	}	1243	}
756		1244
757	/*****************************************************************************/	1245	/*****************************************************************************/
758		1246
759	void	1247	void
760	ev_io_start (struct ev_io *w)	1248	ev_io_start (EV_P_ struct ev_io *w)
761	{	1249	{
		1250	int fd = w->fd;
		1251
762	if (ev_is_active (w))	1252	if (ev_is_active (w))
763	return;	1253	return;
764		1254
765	int fd = w->fd;	1255	assert (("ev_io_start called with negative fd", fd >= 0));
766		1256
767	ev_start ((W)w, 1);	1257	ev_start (EV_A_ (W)w, 1);
768	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1258	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
769	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1259	wlist_add ((WL *)&anfds[fd].head, (WL)w);
770		1260
771	fd_change (fd);	1261	fd_change (EV_A_ fd);
772	}	1262	}
773		1263
774	void	1264	void
775	ev_io_stop (struct ev_io *w)	1265	ev_io_stop (EV_P_ struct ev_io *w)
776	{	1266	{
777	ev_clear ((W)w);	1267	ev_clear_pending (EV_A_ (W)w);
778	if (!ev_is_active (w))	1268	if (!ev_is_active (w))
779	return;	1269	return;
780		1270
781	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1271	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
782	ev_stop ((W)w);	1272	ev_stop (EV_A_ (W)w);
783		1273
784	fd_change (w->fd);	1274	fd_change (EV_A_ w->fd);
785	}	1275	}
786		1276
787	void	1277	void
788	ev_timer_start (struct ev_timer *w)	1278	ev_timer_start (EV_P_ struct ev_timer *w)
789	{	1279	{
790	if (ev_is_active (w))	1280	if (ev_is_active (w))
791	return;	1281	return;
792		1282
793	w->at += now;	1283	((WT)w)->at += mn_now;
794		1284
795	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.));
796		1286
797	ev_start ((W)w, ++timercnt);	1287	ev_start (EV_A_ (W)w, ++timercnt);
798	array_needsize (timers, timermax, timercnt, );	1288	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
799	timers [timercnt - 1] = w;	1289	timers [timercnt - 1] = w;
800	upheap ((WT *)timers, timercnt - 1);	1290	upheap ((WT *)timers, timercnt - 1);
801	}
802		1291
		1292	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1293	}
		1294
803	void	1295	void
804	ev_timer_stop (struct ev_timer *w)	1296	ev_timer_stop (EV_P_ struct ev_timer *w)
805	{	1297	{
806	ev_clear ((W)w);	1298	ev_clear_pending (EV_A_ (W)w);
807	if (!ev_is_active (w))	1299	if (!ev_is_active (w))
808	return;	1300	return;
809		1301
		1302	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1303
810	if (w->active < timercnt--)	1304	if (((W)w)->active < timercnt--)
811	{	1305	{
812	timers [w->active - 1] = timers [timercnt];	1306	timers [((W)w)->active - 1] = timers [timercnt];
813	downheap ((WT *)timers, timercnt, w->active - 1);	1307	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
814	}	1308	}
815		1309
816	w->at = w->repeat;	1310	((WT)w)->at = w->repeat;
817		1311
818	ev_stop ((W)w);	1312	ev_stop (EV_A_ (W)w);
819	}	1313	}
820		1314
821	void	1315	void
822	ev_timer_again (struct ev_timer *w)	1316	ev_timer_again (EV_P_ struct ev_timer *w)
823	{	1317	{
824	if (ev_is_active (w))	1318	if (ev_is_active (w))
825	{	1319	{
826	if (w->repeat)	1320	if (w->repeat)
827	{	1321	{
828	w->at = now + w->repeat;	1322	((WT)w)->at = mn_now + w->repeat;
829	downheap ((WT *)timers, timercnt, w->active - 1);	1323	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
830	}	1324	}
831	else	1325	else
832	ev_timer_stop (w);	1326	ev_timer_stop (EV_A_ w);
833	}	1327	}
834	else if (w->repeat)	1328	else if (w->repeat)
835	ev_timer_start (w);	1329	ev_timer_start (EV_A_ w);
836	}	1330	}
837		1331
838	void	1332	void
839	ev_periodic_start (struct ev_periodic *w)	1333	ev_periodic_start (EV_P_ struct ev_periodic *w)
840	{	1334	{
841	if (ev_is_active (w))	1335	if (ev_is_active (w))
842	return;	1336	return;
843		1337
844	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1338	if (w->reschedule_cb)
845		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.));
846	/* 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 */
847	if (w->interval)
848	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	}
849		1346
850	ev_start ((W)w, ++periodiccnt);	1347	ev_start (EV_A_ (W)w, ++periodiccnt);
851	array_needsize (periodics, periodicmax, periodiccnt, );	1348	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
852	periodics [periodiccnt - 1] = w;	1349	periodics [periodiccnt - 1] = w;
853	upheap ((WT *)periodics, periodiccnt - 1);	1350	upheap ((WT *)periodics, periodiccnt - 1);
854	}
855		1351
		1352	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1353	}
		1354
856	void	1355	void
857	ev_periodic_stop (struct ev_periodic *w)	1356	ev_periodic_stop (EV_P_ struct ev_periodic *w)
858	{	1357	{
859	ev_clear ((W)w);	1358	ev_clear_pending (EV_A_ (W)w);
860	if (!ev_is_active (w))	1359	if (!ev_is_active (w))
861	return;	1360	return;
862		1361
		1362	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1363
863	if (w->active < periodiccnt--)	1364	if (((W)w)->active < periodiccnt--)
864	{	1365	{
865	periodics [w->active - 1] = periodics [periodiccnt];	1366	periodics [((W)w)->active - 1] = periodics [periodiccnt];
866	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1367	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
867	}	1368	}
868		1369
869	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
870	}	1371	}
871		1372
872	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
873	ev_signal_start (struct ev_signal *w)	1381	ev_idle_start (EV_P_ struct ev_idle *w)
874	{	1382	{
875	if (ev_is_active (w))	1383	if (ev_is_active (w))
876	return;	1384	return;
877		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
878	ev_start ((W)w, 1);	1461	ev_start (EV_A_ (W)w, 1);
879	array_needsize (signals, signalmax, w->signum, signals_init);	1462	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
880	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1463	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
881		1464
882	if (!w->next)	1465	if (!((WL)w)->next)
883	{	1466	{
		1467	#if WIN32
		1468	signal (w->signum, sighandler);
		1469	#else
884	struct sigaction sa;	1470	struct sigaction sa;
885	sa.sa_handler = sighandler;	1471	sa.sa_handler = sighandler;
886	sigfillset (&sa.sa_mask);	1472	sigfillset (&sa.sa_mask);
887	sa.sa_flags = 0;	1473	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
888	sigaction (w->signum, &sa, 0);	1474	sigaction (w->signum, &sa, 0);
		1475	#endif
889	}	1476	}
890	}	1477	}
891		1478
892	void	1479	void
893	ev_signal_stop (struct ev_signal *w)	1480	ev_signal_stop (EV_P_ struct ev_signal *w)
894	{	1481	{
895	ev_clear ((W)w);	1482	ev_clear_pending (EV_A_ (W)w);
896	if (!ev_is_active (w))	1483	if (!ev_is_active (w))
897	return;	1484	return;
898		1485
899	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1486	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
900	ev_stop ((W)w);	1487	ev_stop (EV_A_ (W)w);
901		1488
902	if (!signals [w->signum - 1].head)	1489	if (!signals [w->signum - 1].head)
903	signal (w->signum, SIG_DFL);	1490	signal (w->signum, SIG_DFL);
904	}	1491	}
905		1492
906	void	1493	void
907	ev_idle_start (struct ev_idle *w)	1494	ev_child_start (EV_P_ struct ev_child *w)
908	{	1495	{
		1496	#if EV_MULTIPLICITY
		1497	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1498	#endif
909	if (ev_is_active (w))	1499	if (ev_is_active (w))
910	return;	1500	return;
911		1501
912	ev_start ((W)w, ++idlecnt);	1502	ev_start (EV_A_ (W)w, 1);
913	array_needsize (idles, idlemax, idlecnt, );	1503	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
914	idles [idlecnt - 1] = w;
915	}	1504	}
916		1505
917	void	1506	void
918	ev_idle_stop (struct ev_idle *w)	1507	ev_child_stop (EV_P_ struct ev_child *w)
919	{	1508	{
920	ev_clear ((W)w);	1509	ev_clear_pending (EV_A_ (W)w);
921	if (ev_is_active (w))	1510	if (ev_is_active (w))
922	return;	1511	return;
923		1512
924	idles [w->active - 1] = idles [--idlecnt];
925	ev_stop ((W)w);
926	}
927
928	void
929	ev_prepare_start (struct ev_prepare *w)
930	{
931	if (ev_is_active (w))
932	return;
933
934	ev_start ((W)w, ++preparecnt);
935	array_needsize (prepares, preparemax, preparecnt, );
936	prepares [preparecnt - 1] = w;
937	}
938
939	void
940	ev_prepare_stop (struct ev_prepare *w)
941	{
942	ev_clear ((W)w);
943	if (ev_is_active (w))
944	return;
945
946	prepares [w->active - 1] = prepares [--preparecnt];
947	ev_stop ((W)w);
948	}
949
950	void
951	ev_check_start (struct ev_check *w)
952	{
953	if (ev_is_active (w))
954	return;
955
956	ev_start ((W)w, ++checkcnt);
957	array_needsize (checks, checkmax, checkcnt, );
958	checks [checkcnt - 1] = w;
959	}
960
961	void
962	ev_check_stop (struct ev_check *w)
963	{
964	ev_clear ((W)w);
965	if (ev_is_active (w))
966	return;
967
968	checks [w->active - 1] = checks [--checkcnt];
969	ev_stop ((W)w);
970	}
971
972	void
973	ev_child_start (struct ev_child *w)
974	{
975	if (ev_is_active (w))
976	return;
977
978	ev_start ((W)w, 1);
979	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	}
981
982	void
983	ev_child_stop (struct ev_child *w)
984	{
985	ev_clear ((W)w);
986	if (ev_is_active (w))
987	return;
988
989	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1513	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	ev_stop ((W)w);	1514	ev_stop (EV_A_ (W)w);
991	}	1515	}
992		1516
993	/*****************************************************************************/	1517	/*****************************************************************************/
994		1518
995	struct ev_once	1519	struct ev_once
…		…
999	void (*cb)(int revents, void *arg);	1523	void (*cb)(int revents, void *arg);
1000	void *arg;	1524	void *arg;
1001	};	1525	};
1002		1526
1003	static void	1527	static void
1004	once_cb (struct ev_once *once, int revents)	1528	once_cb (EV_P_ struct ev_once *once, int revents)
1005	{	1529	{
1006	void (*cb)(int revents, void *arg) = once->cb;	1530	void (*cb)(int revents, void *arg) = once->cb;
1007	void *arg = once->arg;	1531	void *arg = once->arg;
1008		1532
1009	ev_io_stop (&once->io);	1533	ev_io_stop (EV_A_ &once->io);
1010	ev_timer_stop (&once->to);	1534	ev_timer_stop (EV_A_ &once->to);
1011	free (once);	1535	ev_free (once);
1012		1536
1013	cb (revents, arg);	1537	cb (revents, arg);
1014	}	1538	}
1015		1539
1016	static void	1540	static void
1017	once_cb_io (struct ev_io *w, int revents)	1541	once_cb_io (EV_P_ struct ev_io *w, int revents)
1018	{	1542	{
1019	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);
1020	}	1544	}
1021		1545
1022	static void	1546	static void
1023	once_cb_to (struct ev_timer *w, int revents)	1547	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1024	{	1548	{
1025	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);
1026	}	1550	}
1027		1551
1028	void	1552	void
1029	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)
1030	{	1554	{
1031	struct ev_once *once = malloc (sizeof (struct ev_once));	1555	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1032		1556
1033	if (!once)	1557	if (!once)
1034	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1558	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1035	else	1559	else
1036	{	1560	{
…		…
1039		1563
1040	ev_watcher_init (&once->io, once_cb_io);	1564	ev_watcher_init (&once->io, once_cb_io);
1041	if (fd >= 0)	1565	if (fd >= 0)
1042	{	1566	{
1043	ev_io_set (&once->io, fd, events);	1567	ev_io_set (&once->io, fd, events);
1044	ev_io_start (&once->io);	1568	ev_io_start (EV_A_ &once->io);
1045	}	1569	}
1046		1570
1047	ev_watcher_init (&once->to, once_cb_to);	1571	ev_watcher_init (&once->to, once_cb_to);
1048	if (timeout >= 0.)	1572	if (timeout >= 0.)
1049	{	1573	{
1050	ev_timer_set (&once->to, timeout, 0.);	1574	ev_timer_set (&once->to, timeout, 0.);
1051	ev_timer_start (&once->to);	1575	ev_timer_start (EV_A_ &once->to);
1052	}	1576	}
1053	}	1577	}
1054	}	1578	}
1055		1579
1056	/*****************************************************************************/
1057
1058	#if 0
1059
1060	struct ev_io wio;
1061
1062	static void
1063	sin_cb (struct ev_io *w, int revents)
1064	{
1065	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1066	}
1067
1068	static void
1069	ocb (struct ev_timer *w, int revents)
1070	{
1071	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1072	ev_timer_stop (w);
1073	ev_timer_start (w);
1074	}
1075
1076	static void
1077	scb (struct ev_signal *w, int revents)
1078	{
1079	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1080	ev_io_stop (&wio);
1081	ev_io_start (&wio);
1082	}
1083
1084	static void
1085	gcb (struct ev_signal *w, int revents)
1086	{
1087	fprintf (stderr, "generic %x\n", revents);
1088
1089	}
1090
1091	int main (void)
1092	{
1093	ev_init (0);
1094
1095	ev_io_init (&wio, sin_cb, 0, EV_READ);
1096	ev_io_start (&wio);
1097
1098	struct ev_timer t[10000];
1099
1100	#if 0
1101	int i;
1102	for (i = 0; i < 10000; ++i)
1103	{
1104	struct ev_timer *w = t + i;
1105	ev_watcher_init (w, ocb, i);
1106	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1107	ev_timer_start (w);
1108	if (drand48 () < 0.5)
1109	ev_timer_stop (w);
1110	}
1111	#endif
1112
1113	struct ev_timer t1;
1114	ev_timer_init (&t1, ocb, 5, 10);
1115	ev_timer_start (&t1);
1116
1117	struct ev_signal sig;
1118	ev_signal_init (&sig, scb, SIGQUIT);
1119	ev_signal_start (&sig);
1120
1121	struct ev_check cw;
1122	ev_check_init (&cw, gcb);
1123	ev_check_start (&cw);
1124
1125	struct ev_idle iw;
1126	ev_idle_init (&iw, gcb);
1127	ev_idle_start (&iw);
1128
1129	ev_loop (0);
1130
1131	return 0;
1132	}
1133
1134	#endif
1135
1136
1137
1138

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