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

Comparing libev/ev.c (file contents):
Revision 1.25 by root, Wed Oct 31 21:34:45 2007 UTC vs.
Revision 1.113 by root, Mon Nov 12 08:00:05 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
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		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
		37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
		64	#endif
		65
30	#include <math.h>	66	#include <math.h>
31	#include <stdlib.h>	67	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	68	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	69	#include <stddef.h>
36		70
37	#include <stdio.h>	71	#include <stdio.h>
38		72
39	#include <assert.h>	73	#include <assert.h>
40	#include <errno.h>	74	#include <errno.h>
41	#include <sys/types.h>	75	#include <sys/types.h>
42	#include <sys/wait.h>
43	#include <sys/time.h>
44	#include <time.h>	76	#include <time.h>
45		77
46	#ifndef HAVE_MONOTONIC	78	#include <signal.h>
47	# ifdef CLOCK_MONOTONIC	79
48	# define HAVE_MONOTONIC 1	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
49	# endif	89	# endif
50	#endif	90	#endif
51		91
		92	/**/
		93
		94	#ifndef EV_USE_MONOTONIC
		95	# define EV_USE_MONOTONIC 1
		96	#endif
		97
52	#ifndef HAVE_SELECT	98	#ifndef EV_USE_SELECT
53	# define HAVE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
		101	#endif
		102
		103	#ifndef EV_USE_POLL
		104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
54	#endif	108	# endif
		109	#endif
55		110
56	#ifndef HAVE_EPOLL	111	#ifndef EV_USE_EPOLL
57	# define HAVE_EPOLL 0	112	# define EV_USE_EPOLL 0
58	#endif	113	#endif
59		114
		115	#ifndef EV_USE_KQUEUE
		116	# define EV_USE_KQUEUE 0
		117	#endif
		118
60	#ifndef HAVE_REALTIME	119	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	120	# define EV_USE_REALTIME 1
62	#endif	121	#endif
		122
		123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
		130
		131	#ifndef CLOCK_MONOTONIC
		132	# undef EV_USE_MONOTONIC
		133	# define EV_USE_MONOTONIC 0
		134	#endif
		135
		136	#ifndef CLOCK_REALTIME
		137	# undef EV_USE_REALTIME
		138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
		143	#endif
		144
		145	/**/
63		146
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
67		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
68	#include "ev.h"	155	# include "ev.h"
		156	#endif
		157
		158	#if __GNUC__ >= 3
		159	# define expect(expr,value) __builtin_expect ((expr),(value))
		160	# define inline inline
		161	#else
		162	# define expect(expr,value) (expr)
		163	# define inline static
		164	#endif
		165
		166	#define expect_false(expr) expect ((expr) != 0, 0)
		167	#define expect_true(expr) expect ((expr) != 0, 1)
		168
		169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		171
		172	#define EMPTY /* required for microsofts broken pseudo-c compiler */
69		173
70	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
73		177
74	static ev_tstamp now, diff; /* monotonic clock */	178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		179
		180	#ifdef _WIN32
		181	# include "ev_win32.c"
		182	#endif
		183
		184	/*****************************************************************************/
		185
		186	static void (syserr_cb)(const char msg);
		187
		188	void ev_set_syserr_cb (void (cb)(const char msg))
		189	{
		190	syserr_cb = cb;
		191	}
		192
		193	static void
		194	syserr (const char *msg)
		195	{
		196	if (!msg)
		197	msg = "(libev) system error";
		198
		199	if (syserr_cb)
		200	syserr_cb (msg);
		201	else
		202	{
		203	perror (msg);
		204	abort ();
		205	}
		206	}
		207
		208	static void (alloc)(void *ptr, long size);
		209
		210	void ev_set_allocator (void (cb)(void *ptr, long size))
		211	{
		212	alloc = cb;
		213	}
		214
		215	static void *
		216	ev_realloc (void *ptr, long size)
		217	{
		218	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		219
		220	if (!ptr && size)
		221	{
		222	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		223	abort ();
		224	}
		225
		226	return ptr;
		227	}
		228
		229	#define ev_malloc(size) ev_realloc (0, (size))
		230	#define ev_free(ptr) ev_realloc ((ptr), 0)
		231
		232	/*****************************************************************************/
		233
		234	typedef struct
		235	{
		236	WL head;
		237	unsigned char events;
		238	unsigned char reify;
		239	#if EV_SELECT_IS_WINSOCKET
		240	SOCKET handle;
		241	#endif
		242	} ANFD;
		243
		244	typedef struct
		245	{
		246	W w;
		247	int events;
		248	} ANPENDING;
		249
		250	#if EV_MULTIPLICITY
		251
		252	struct ev_loop
		253	{
		254	ev_tstamp ev_rt_now;
		255	#define ev_rt_now ((loop)->ev_rt_now)
		256	#define VAR(name,decl) decl;
		257	#include "ev_vars.h"
		258	#undef VAR
		259	};
		260	#include "ev_wrap.h"
		261
		262	struct ev_loop default_loop_struct;
		263	static struct ev_loop *default_loop;
		264
		265	#else
		266
75	ev_tstamp ev_now;	267	ev_tstamp ev_rt_now;
76	int ev_method;	268	#define VAR(name,decl) static decl;
		269	#include "ev_vars.h"
		270	#undef VAR
77		271
78	static int have_monotonic; /* runtime */	272	static int default_loop;
79		273
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	274	#endif
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		275
84	/*****************************************************************************/	276	/*****************************************************************************/
85		277
86	ev_tstamp	278	ev_tstamp
87	ev_time (void)	279	ev_time (void)
88	{	280	{
89	#if HAVE_REALTIME	281	#if EV_USE_REALTIME
90	struct timespec ts;	282	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	283	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	284	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	285	#else
94	struct timeval tv;	286	struct timeval tv;
95	gettimeofday (&tv, 0);	287	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	288	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	289	#endif
98	}	290	}
99		291
100	static ev_tstamp	292	inline ev_tstamp
101	get_clock (void)	293	get_clock (void)
102	{	294	{
103	#if HAVE_MONOTONIC	295	#if EV_USE_MONOTONIC
104	if (have_monotonic)	296	if (expect_true (have_monotonic))
105	{	297	{
106	struct timespec ts;	298	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	299	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	300	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	301	}
110	#endif	302	#endif
111		303
112	return ev_time ();	304	return ev_time ();
113	}	305	}
114		306
		307	#if EV_MULTIPLICITY
		308	ev_tstamp
		309	ev_now (EV_P)
		310	{
		311	return ev_rt_now;
		312	}
		313	#endif
		314
		315	#define array_roundsize(type,n) (((n) \| 4) & ~3)
		316
115	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	318	if (expect_false ((cnt) > cur)) \
117	{ \	319	{ \
118	int newcnt = cur; \	320	int newcnt = cur; \
119	do \	321	do \
120	{ \	322	{ \
121	newcnt = (newcnt << 1) \| 4 & ~3; \	323	newcnt = array_roundsize (type, newcnt << 1); \
122	} \	324	} \
123	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
124	\	326	\
125	base = realloc (base, sizeof (base) (newcnt)); \	327	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
126	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
127	cur = newcnt; \	329	cur = newcnt; \
128	}	330	}
		331
		332	#define array_slim(type,stem) \
		333	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		334	{ \
		335	stem ## max = array_roundsize (stem ## cnt >> 1); \
		336	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		337	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		338	}
		339
		340	#define array_free(stem, idx) \
		341	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		342
130	/*****************************************************************************/	343	/*****************************************************************************/
131		344
132	typedef struct
133	{
134	struct ev_io *head;
135	unsigned char wev, rev; /* want, received event set */
136	} ANFD;
137
138	static ANFD *anfds;
139	static int anfdmax;
140
141	static int *fdchanges;
142	static int fdchangemax, fdchangecnt;
143
144	static void	345	static void
145	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
146	{	347	{
147	while (count--)	348	while (count--)
148	{	349	{
149	base->head = 0;	350	base->head = 0;
150	base->wev = base->rev = EV_NONE;	351	base->events = EV_NONE;
		352	base->reify = 0;
		353
151	++base;	354	++base;
152	}	355	}
153	}	356	}
154		357
155	typedef struct	358	void
		359	ev_feed_event (EV_P_ void *w, int revents)
156	{	360	{
157	W w;	361	W w_ = (W)w;
158	int events;
159	} ANPENDING;
160		362
161	static ANPENDING *pendings;	363	if (w_->pending)
162	static int pendingmax, pendingcnt;
163
164	static void
165	event (W w, int events)
166	{
167	if (w->active)
168	{	364	{
169	w->pending = ++pendingcnt;
170	array_needsize (pendings, pendingmax, pendingcnt, );
171	pendings [pendingcnt - 1].w = w;
172	pendings [pendingcnt - 1].events = events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		366	return;
173	}	367	}
174	}
175		368
		369	w_->pending = ++pendingcnt [ABSPRI (w_)];
		370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		373	}
		374
176	static void	375	static void
		376	queue_events (EV_P_ W *events, int eventcnt, int type)
		377	{
		378	int i;
		379
		380	for (i = 0; i < eventcnt; ++i)
		381	ev_feed_event (EV_A_ events [i], type);
		382	}
		383
		384	inline void
177	fd_event (int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
178	{	386	{
179	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
180	struct ev_io *w;	388	struct ev_io *w;
181		389
182	for (w = anfd->head; w; w = w->next)	390	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
183	{	391	{
184	int ev = w->events & events;	392	int ev = w->events & revents;
185		393
186	if (ev)	394	if (ev)
187	event ((W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
188	}	396	}
189	}	397	}
190		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
		403	}
		404
		405	/*****************************************************************************/
		406
191	static void	407	static void
192	queue_events (W *events, int eventcnt, int type)	408	fd_reify (EV_P)
193	{	409	{
194	int i;	410	int i;
195		411
196	for (i = 0; i < eventcnt; ++i)	412	for (i = 0; i < fdchangecnt; ++i)
197	event (events [i], type);	413	{
		414	int fd = fdchanges [i];
		415	ANFD *anfd = anfds + fd;
		416	struct ev_io *w;
		417
		418	int events = 0;
		419
		420	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
		421	events \|= w->events;
		422
		423	#if EV_SELECT_IS_WINSOCKET
		424	if (events)
		425	{
		426	unsigned long argp;
		427	anfd->handle = _get_osfhandle (fd);
		428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		429	}
		430	#endif
		431
		432	anfd->reify = 0;
		433
		434	method_modify (EV_A_ fd, anfd->events, events);
		435	anfd->events = events;
		436	}
		437
		438	fdchangecnt = 0;
		439	}
		440
		441	static void
		442	fd_change (EV_P_ int fd)
		443	{
		444	if (anfds [fd].reify)
		445	return;
		446
		447	anfds [fd].reify = 1;
		448
		449	++fdchangecnt;
		450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
		451	fdchanges [fdchangecnt - 1] = fd;
		452	}
		453
		454	static void
		455	fd_kill (EV_P_ int fd)
		456	{
		457	struct ev_io *w;
		458
		459	while ((w = (struct ev_io *)anfds [fd].head))
		460	{
		461	ev_io_stop (EV_A_ w);
		462	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		463	}
		464	}
		465
		466	static int
		467	fd_valid (int fd)
		468	{
		469	#ifdef _WIN32
		470	return _get_osfhandle (fd) != -1;
		471	#else
		472	return fcntl (fd, F_GETFD) != -1;
		473	#endif
198	}	474	}
199		475
200	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
201	static void	477	static void
202	fd_recheck (void)	478	fd_ebadf (EV_P)
203	{	479	{
204	int fd;	480	int fd;
205		481
206	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
207	if (anfds [fd].wev)	483	if (anfds [fd].events)
208	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
209	while (anfds [fd].head)	485	fd_kill (EV_A_ fd);
		486	}
		487
		488	/* called on ENOMEM in select/poll to kill some fds and retry */
		489	static void
		490	fd_enomem (EV_P)
		491	{
		492	int fd;
		493
		494	for (fd = anfdmax; fd--; )
		495	if (anfds [fd].events)
210	{	496	{
211	event ((W)anfds [fd].head, EV_ERROR);	497	fd_kill (EV_A_ fd);
212	evio_stop (anfds [fd].head);	498	return;
213	}	499	}
		500	}
		501
		502	/* usually called after fork if method needs to re-arm all fds from scratch */
		503	static void
		504	fd_rearm_all (EV_P)
		505	{
		506	int fd;
		507
		508	/* this should be highly optimised to not do anything but set a flag */
		509	for (fd = 0; fd < anfdmax; ++fd)
		510	if (anfds [fd].events)
		511	{
		512	anfds [fd].events = 0;
		513	fd_change (EV_A_ fd);
		514	}
214	}	515	}
215		516
216	/*****************************************************************************/	517	/*****************************************************************************/
217		518
218	static struct ev_timer **timers;
219	static int timermax, timercnt;
220
221	static struct ev_periodic **periodics;
222	static int periodicmax, periodiccnt;
223
224	static void	519	static void
225	upheap (WT *timers, int k)	520	upheap (WT *heap, int k)
226	{	521	{
227	WT w = timers [k];	522	WT w = heap [k];
228		523
229	while (k && timers [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
230	{	525	{
231	timers [k] = timers [k >> 1];	526	heap [k] = heap [k >> 1];
232	timers [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
233	k >>= 1;	528	k >>= 1;
234	}	529	}
235		530
236	timers [k] = w;	531	heap [k] = w;
237	timers [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
238		533
239	}	534	}
240		535
241	static void	536	static void
242	downheap (WT *timers, int N, int k)	537	downheap (WT *heap, int N, int k)
243	{	538	{
244	WT w = timers [k];	539	WT w = heap [k];
245		540
246	while (k < (N >> 1))	541	while (k < (N >> 1))
247	{	542	{
248	int j = k << 1;	543	int j = k << 1;
249		544
250	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
251	++j;	546	++j;
252		547
253	if (w->at <= timers [j]->at)	548	if (w->at <= heap [j]->at)
254	break;	549	break;
255		550
256	timers [k] = timers [j];	551	heap [k] = heap [j];
257	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
258	k = j;	553	k = j;
259	}	554	}
260		555
261	timers [k] = w;	556	heap [k] = w;
262	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
		558	}
		559
		560	inline void
		561	adjustheap (WT *heap, int N, int k)
		562	{
		563	upheap (heap, k);
		564	downheap (heap, N, k);
263	}	565	}
264		566
265	/*****************************************************************************/	567	/*****************************************************************************/
266		568
267	typedef struct	569	typedef struct
268	{	570	{
269	struct ev_signal *head;	571	WL head;
270	sig_atomic_t gotsig;	572	sig_atomic_t volatile gotsig;
271	} ANSIG;	573	} ANSIG;
272		574
273	static ANSIG *signals;	575	static ANSIG *signals;
274	static int signalmax;	576	static int signalmax;
275		577
276	static int sigpipe [2];	578	static int sigpipe [2];
277	static sig_atomic_t gotsig;	579	static sig_atomic_t volatile gotsig;
278	static struct ev_io sigev;	580	static struct ev_io sigev;
279		581
280	static void	582	static void
281	signals_init (ANSIG *base, int count)	583	signals_init (ANSIG *base, int count)
282	{	584	{
283	while (count--)	585	while (count--)
284	{	586	{
285	base->head = 0;	587	base->head = 0;
286	base->gotsig = 0;	588	base->gotsig = 0;
		589
287	++base;	590	++base;
288	}	591	}
289	}	592	}
290		593
291	static void	594	static void
292	sighandler (int signum)	595	sighandler (int signum)
293	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
294	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
295		602
296	if (!gotsig)	603	if (!gotsig)
297	{	604	{
		605	int old_errno = errno;
298	gotsig = 1;	606	gotsig = 1;
299	write (sigpipe [1], &gotsig, 1);	607	write (sigpipe [1], &signum, 1);
		608	errno = old_errno;
300	}	609	}
301	}	610	}
302		611
		612	void
		613	ev_feed_signal_event (EV_P_ int signum)
		614	{
		615	WL w;
		616
		617	#if EV_MULTIPLICITY
		618	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		619	#endif
		620
		621	--signum;
		622
		623	if (signum < 0 \|\| signum >= signalmax)
		624	return;
		625
		626	signals [signum].gotsig = 0;
		627
		628	for (w = signals [signum].head; w; w = w->next)
		629	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		630	}
		631
303	static void	632	static void
304	sigcb (struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
305	{	634	{
306	struct ev_signal *w;
307	int sig;	635	int signum;
308		636
		637	read (sigpipe [0], &revents, 1);
309	gotsig = 0;	638	gotsig = 0;
310	read (sigpipe [0], &revents, 1);
311		639
312	for (sig = signalmax; sig--; )	640	for (signum = signalmax; signum--; )
313	if (signals [sig].gotsig)	641	if (signals [signum].gotsig)
314	{	642	ev_feed_signal_event (EV_A_ signum + 1);
315	signals [sig].gotsig = 0;
316
317	for (w = signals [sig].head; w; w = w->next)
318	event ((W)w, EV_SIGNAL);
319	}
320	}	643	}
321		644
322	static void	645	inline void
323	siginit (void)	646	fd_intern (int fd)
324	{	647	{
		648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
325	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	652	fcntl (fd, F_SETFD, FD_CLOEXEC);
326	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
327
328	/* rather than sort out wether we really need nb, set it */
329	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	653	fcntl (fd, F_SETFL, O_NONBLOCK);
330	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	654	#endif
		655	}
331		656
		657	static void
		658	siginit (EV_P)
		659	{
		660	fd_intern (sigpipe [0]);
		661	fd_intern (sigpipe [1]);
		662
332	evio_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
333	evio_start (&sigev);	664	ev_io_start (EV_A_ &sigev);
		665	ev_unref (EV_A); /* child watcher should not keep loop alive */
334	}	666	}
335		667
336	/*****************************************************************************/	668	/*****************************************************************************/
337		669
338	static struct ev_idle **idles;
339	static int idlemax, idlecnt;
340
341	static struct ev_prepare **prepares;
342	static int preparemax, preparecnt;
343
344	static struct ev_check **checks;
345	static int checkmax, checkcnt;
346
347	/*****************************************************************************/
348
349	static struct ev_child *childs [PID_HASHSIZE];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
350	static struct ev_signal childev;	674	static struct ev_signal childev;
351		675
352	#ifndef WCONTINUED	676	#ifndef WCONTINUED
353	# define WCONTINUED 0	677	# define WCONTINUED 0
354	#endif	678	#endif
355		679
356	static void	680	static void
357	childcb (struct ev_signal *sw, int revents)	681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
358	{	682	{
359	struct ev_child *w;	683	struct ev_child *w;
		684
		685	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		686	if (w->pid == pid \|\| !w->pid)
		687	{
		688	ev_priority (w) = ev_priority (sw); /* need to do it now */
		689	w->rpid = pid;
		690	w->rstatus = status;
		691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		692	}
		693	}
		694
		695	static void
		696	childcb (EV_P_ struct ev_signal *sw, int revents)
		697	{
360	int pid, status;	698	int pid, status;
361		699
362	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
363	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	701	{
364	if (w->pid == pid \|\| w->pid == -1)	702	/* make sure we are called again until all childs have been reaped */
365	{	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
366	w->status = status;	704
367	event ((W)w, EV_CHILD);	705	child_reap (EV_A_ sw, pid, pid, status);
368	}	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		707	}
369	}	708	}
		709
		710	#endif
370		711
371	/*****************************************************************************/	712	/*****************************************************************************/
372		713
		714	#if EV_USE_KQUEUE
		715	# include "ev_kqueue.c"
		716	#endif
373	#if HAVE_EPOLL	717	#if EV_USE_EPOLL
374	# include "ev_epoll.c"	718	# include "ev_epoll.c"
375	#endif	719	#endif
		720	#if EV_USE_POLL
		721	# include "ev_poll.c"
		722	#endif
376	#if HAVE_SELECT	723	#if EV_USE_SELECT
377	# include "ev_select.c"	724	# include "ev_select.c"
378	#endif	725	#endif
379		726
380	int	727	int
381	ev_version_major (void)	728	ev_version_major (void)
…		…
387	ev_version_minor (void)	734	ev_version_minor (void)
388	{	735	{
389	return EV_VERSION_MINOR;	736	return EV_VERSION_MINOR;
390	}	737	}
391		738
392	int ev_init (int flags)	739	/* return true if we are running with elevated privileges and should ignore env variables */
		740	static int
		741	enable_secure (void)
393	{	742	{
		743	#ifdef _WIN32
		744	return 0;
		745	#else
		746	return getuid () != geteuid ()
		747	\|\| getgid () != getegid ();
		748	#endif
		749	}
		750
		751	unsigned int
		752	ev_method (EV_P)
		753	{
		754	return method;
		755	}
		756
		757	static void
		758	loop_init (EV_P_ unsigned int flags)
		759	{
394	if (!ev_method)	760	if (!method)
395	{	761	{
396	#if HAVE_MONOTONIC	762	#if EV_USE_MONOTONIC
397	{	763	{
398	struct timespec ts;	764	struct timespec ts;
399	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
400	have_monotonic = 1;	766	have_monotonic = 1;
401	}	767	}
402	#endif	768	#endif
403		769
404	ev_now = ev_time ();	770	ev_rt_now = ev_time ();
405	now = get_clock ();	771	mn_now = get_clock ();
		772	now_floor = mn_now;
406	diff = ev_now - now;	773	rtmn_diff = ev_rt_now - mn_now;
407		774
		775	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
		776	flags = atoi (getenv ("LIBEV_FLAGS"));
		777
		778	if (!(flags & 0x0000ffff))
		779	flags \|= 0x0000ffff;
		780
		781	method = 0;
		782	#if EV_USE_KQUEUE
		783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		784	#endif
		785	#if EV_USE_EPOLL
		786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		787	#endif
		788	#if EV_USE_POLL
		789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
		790	#endif
		791	#if EV_USE_SELECT
		792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
		793	#endif
		794
		795	ev_init (&sigev, sigcb);
		796	ev_set_priority (&sigev, EV_MAXPRI);
		797	}
		798	}
		799
		800	void
		801	loop_destroy (EV_P)
		802	{
		803	int i;
		804
		805	#if EV_USE_KQUEUE
		806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		807	#endif
		808	#if EV_USE_EPOLL
		809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		810	#endif
		811	#if EV_USE_POLL
		812	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		813	#endif
		814	#if EV_USE_SELECT
		815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		816	#endif
		817
		818	for (i = NUMPRI; i--; )
		819	array_free (pending, [i]);
		820
		821	/* have to use the microsoft-never-gets-it-right macro */
		822	array_free (fdchange, EMPTY);
		823	array_free (timer, EMPTY);
		824	#if EV_PERIODICS
		825	array_free (periodic, EMPTY);
		826	#endif
		827	array_free (idle, EMPTY);
		828	array_free (prepare, EMPTY);
		829	array_free (check, EMPTY);
		830
		831	method = 0;
		832	}
		833
		834	static void
		835	loop_fork (EV_P)
		836	{
		837	#if EV_USE_EPOLL
		838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		839	#endif
		840	#if EV_USE_KQUEUE
		841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		842	#endif
		843
		844	if (ev_is_active (&sigev))
		845	{
		846	/* default loop */
		847
		848	ev_ref (EV_A);
		849	ev_io_stop (EV_A_ &sigev);
		850	close (sigpipe [0]);
		851	close (sigpipe [1]);
		852
		853	while (pipe (sigpipe))
		854	syserr ("(libev) error creating pipe");
		855
		856	siginit (EV_A);
		857	}
		858
		859	postfork = 0;
		860	}
		861
		862	#if EV_MULTIPLICITY
		863	struct ev_loop *
		864	ev_loop_new (unsigned int flags)
		865	{
		866	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		867
		868	memset (loop, 0, sizeof (struct ev_loop));
		869
		870	loop_init (EV_A_ flags);
		871
		872	if (ev_method (EV_A))
		873	return loop;
		874
		875	return 0;
		876	}
		877
		878	void
		879	ev_loop_destroy (EV_P)
		880	{
		881	loop_destroy (EV_A);
		882	ev_free (loop);
		883	}
		884
		885	void
		886	ev_loop_fork (EV_P)
		887	{
		888	postfork = 1;
		889	}
		890
		891	#endif
		892
		893	#if EV_MULTIPLICITY
		894	struct ev_loop *
		895	#else
		896	int
		897	#endif
		898	ev_default_loop (unsigned int flags)
		899	{
		900	if (sigpipe [0] == sigpipe [1])
408	if (pipe (sigpipe))	901	if (pipe (sigpipe))
409	return 0;	902	return 0;
410		903
411	ev_method = EVMETHOD_NONE;	904	if (!default_loop)
412	#if HAVE_EPOLL	905	{
413	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	906	#if EV_MULTIPLICITY
		907	struct ev_loop *loop = default_loop = &default_loop_struct;
		908	#else
		909	default_loop = 1;
414	#endif	910	#endif
415	#if HAVE_SELECT
416	if (ev_method == EVMETHOD_NONE) select_init (flags);
417	#endif
418		911
		912	loop_init (EV_A_ flags);
		913
419	if (ev_method)	914	if (ev_method (EV_A))
420	{	915	{
421	evw_init (&sigev, sigcb);
422	siginit ();	916	siginit (EV_A);
423		917
		918	#ifndef _WIN32
424	evsignal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
		920	ev_set_priority (&childev, EV_MAXPRI);
425	evsignal_start (&childev);	921	ev_signal_start (EV_A_ &childev);
		922	ev_unref (EV_A); /* child watcher should not keep loop alive */
		923	#endif
426	}	924	}
		925	else
		926	default_loop = 0;
427	}	927	}
428		928
429	return ev_method;	929	return default_loop;
		930	}
		931
		932	void
		933	ev_default_destroy (void)
		934	{
		935	#if EV_MULTIPLICITY
		936	struct ev_loop *loop = default_loop;
		937	#endif
		938
		939	#ifndef _WIN32
		940	ev_ref (EV_A); /* child watcher */
		941	ev_signal_stop (EV_A_ &childev);
		942	#endif
		943
		944	ev_ref (EV_A); /* signal watcher */
		945	ev_io_stop (EV_A_ &sigev);
		946
		947	close (sigpipe [0]); sigpipe [0] = 0;
		948	close (sigpipe [1]); sigpipe [1] = 0;
		949
		950	loop_destroy (EV_A);
		951	}
		952
		953	void
		954	ev_default_fork (void)
		955	{
		956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = default_loop;
		958	#endif
		959
		960	if (method)
		961	postfork = 1;
430	}	962	}
431		963
432	/*****************************************************************************/	964	/*****************************************************************************/
433		965
434	void
435	ev_prefork (void)
436	{
437	/* nop */
438	}
439
440	void
441	ev_postfork_parent (void)
442	{
443	/* nop */
444	}
445
446	void
447	ev_postfork_child (void)
448	{
449	#if HAVE_EPOLL
450	if (ev_method == EVMETHOD_EPOLL)
451	epoll_postfork_child ();
452	#endif
453
454	evio_stop (&sigev);
455	close (sigpipe [0]);
456	close (sigpipe [1]);
457	pipe (sigpipe);
458	siginit ();
459	}
460
461	/*****************************************************************************/
462
463	static void	966	static int
464	fd_reify (void)	967	any_pending (EV_P)
465	{	968	{
466	int i;	969	int pri;
467		970
468	for (i = 0; i < fdchangecnt; ++i)	971	for (pri = NUMPRI; pri--; )
469	{	972	if (pendingcnt [pri])
470	int fd = fdchanges [i];	973	return 1;
471	ANFD *anfd = anfds + fd;
472	struct ev_io *w;
473		974
474	int wev = 0;	975	return 0;
		976	}
475		977
476	for (w = anfd->head; w; w = w->next)	978	static void
477	wev \|= w->events;	979	call_pending (EV_P)
		980	{
		981	int pri;
478		982
479	if (anfd->wev != wev)	983	for (pri = NUMPRI; pri--; )
		984	while (pendingcnt [pri])
480	{	985	{
481	method_modify (fd, anfd->wev, wev);
482	anfd->wev = wev;
483	}
484	}
485
486	fdchangecnt = 0;
487	}
488
489	static void
490	call_pending (void)
491	{
492	while (pendingcnt)
493	{
494	ANPENDING *p = pendings + --pendingcnt;	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
495		987
496	if (p->w)	988	if (p->w)
497	{	989	{
498	p->w->pending = 0;	990	p->w->pending = 0;
499	p->w->cb (p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
500	}	992	}
501	}	993	}
502	}	994	}
503		995
504	static void	996	static void
505	timers_reify (void)	997	timers_reify (EV_P)
506	{	998	{
507	while (timercnt && timers [0]->at <= now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
508	{	1000	{
509	struct ev_timer *w = timers [0];	1001	struct ev_timer *w = timers [0];
510		1002
511	event ((W)w, EV_TIMEOUT);	1003	assert (("inactive timer on timer heap detected", ev_is_active (w)));
512		1004
513	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
514	if (w->repeat)	1006	if (w->repeat)
515	{	1007	{
		1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1009
516	w->at = now + w->repeat;	1010	((WT)w)->at += w->repeat;
517	assert (("timer timeout in the past, negative repeat?", w->at > now));	1011	if (((WT)w)->at < mn_now)
		1012	((WT)w)->at = mn_now;
		1013
518	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
519	}	1015	}
520	else	1016	else
521	evtimer_stop (w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
522	}
523	}
524		1018
		1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1020	}
		1021	}
		1022
		1023	#if EV_PERIODICS
525	static void	1024	static void
526	periodics_reify (void)	1025	periodics_reify (EV_P)
527	{	1026	{
528	while (periodiccnt && periodics [0]->at <= ev_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
529	{	1028	{
530	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
531		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
532	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
533	if (w->interval)	1034	if (w->reschedule_cb)
534	{	1035	{
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1037	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1038	downheap ((WT *)periodics, periodiccnt, 0);
		1039	}
		1040	else if (w->interval)
		1041	{
535	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1042	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
536	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1043	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
537	downheap ((WT *)periodics, periodiccnt, 0);	1044	downheap ((WT *)periodics, periodiccnt, 0);
538	}	1045	}
539	else	1046	else
540	evperiodic_stop (w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
541		1048
542	event ((W)w, EV_TIMEOUT);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
543	}	1050	}
544	}	1051	}
545		1052
546	static void	1053	static void
547	periodics_reschedule (ev_tstamp diff)	1054	periodics_reschedule (EV_P)
548	{	1055	{
549	int i;	1056	int i;
550		1057
551	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
552	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
553	{	1060	{
554	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
555		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
556	if (w->interval)	1065	else if (w->interval)
		1066	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1067	}
		1068
		1069	/* now rebuild the heap */
		1070	for (i = periodiccnt >> 1; i--; )
		1071	downheap ((WT *)periodics, periodiccnt, i);
		1072	}
		1073	#endif
		1074
		1075	inline int
		1076	time_update_monotonic (EV_P)
		1077	{
		1078	mn_now = get_clock ();
		1079
		1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1081	{
		1082	ev_rt_now = rtmn_diff + mn_now;
		1083	return 0;
		1084	}
		1085	else
		1086	{
		1087	now_floor = mn_now;
		1088	ev_rt_now = ev_time ();
		1089	return 1;
		1090	}
		1091	}
		1092
		1093	static void
		1094	time_update (EV_P)
		1095	{
		1096	int i;
		1097
		1098	#if EV_USE_MONOTONIC
		1099	if (expect_true (have_monotonic))
		1100	{
		1101	if (time_update_monotonic (EV_A))
557	{	1102	{
558	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1103	ev_tstamp odiff = rtmn_diff;
559		1104
560	if (fabs (diff) >= 1e-4)	1105	for (i = 4; --i; ) /* loop a few times, before making important decisions */
561	{	1106	{
562	evperiodic_stop (w);	1107	rtmn_diff = ev_rt_now - mn_now;
563	evperiodic_start (w);
564		1108
565	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1110	return; /* all is well */
		1111
		1112	ev_rt_now = ev_time ();
		1113	mn_now = get_clock ();
		1114	now_floor = mn_now;
566	}	1115	}
		1116
		1117	# if EV_PERIODICS
		1118	periodics_reschedule (EV_A);
		1119	# endif
		1120	/* no timer adjustment, as the monotonic clock doesn't jump */
		1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
567	}	1122	}
568	}	1123	}
569	}	1124	else
570		1125	#endif
571	static void	1126	{
572	time_update (void)
573	{
574	int i;
575
576	ev_now = ev_time ();	1127	ev_rt_now = ev_time ();
577		1128
578	if (have_monotonic)	1129	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
579	{
580	ev_tstamp odiff = diff;
581
582	for (i = 4; --i; ) /* loop a few times, before making important decisions */
583	{	1130	{
584	now = get_clock ();	1131	#if EV_PERIODICS
585	diff = ev_now - now;
586
587	if (fabs (odiff - diff) < MIN_TIMEJUMP)
588	return; /* all is well */
589
590	ev_now = ev_time ();
591	}
592
593	periodics_reschedule (diff - odiff);
594	/* no timer adjustment, as the monotonic clock doesn't jump */
595	}
596	else
597	{
598	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
599	{
600	periodics_reschedule (ev_now - now);	1132	periodics_reschedule (EV_A);
		1133	#endif
601		1134
602	/* adjust timers. this is easy, as the offset is the same for all */	1135	/* adjust timers. this is easy, as the offset is the same for all */
603	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
604	timers [i]->at += diff;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
605	}	1138	}
606		1139
607	now = ev_now;	1140	mn_now = ev_rt_now;
608	}	1141	}
609	}	1142	}
610		1143
611	int ev_loop_done;	1144	void
		1145	ev_ref (EV_P)
		1146	{
		1147	++activecnt;
		1148	}
612		1149
		1150	void
		1151	ev_unref (EV_P)
		1152	{
		1153	--activecnt;
		1154	}
		1155
		1156	static int loop_done;
		1157
		1158	void
613	void ev_loop (int flags)	1159	ev_loop (EV_P_ int flags)
614	{	1160	{
615	double block;	1161	double block;
616	ev_loop_done = flags & EVLOOP_ONESHOT ? 1 : 0;	1162	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
617		1163
618	do	1164	do
619	{	1165	{
620	/* queue check watchers (and execute them) */	1166	/* queue check watchers (and execute them) */
621	if (preparecnt)	1167	if (expect_false (preparecnt))
622	{	1168	{
623	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
624	call_pending ();	1170	call_pending (EV_A);
625	}	1171	}
626		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
627	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
628	fd_reify ();	1178	fd_reify (EV_A);
629		1179
630	/* calculate blocking time */	1180	/* calculate blocking time */
631		1181
632	/* we only need this for !monotonic clockor timers, but as we basically	1182	/* we only need this for !monotonic clock or timers, but as we basically
633	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
		1184	#if EV_USE_MONOTONIC
		1185	if (expect_true (have_monotonic))
		1186	time_update_monotonic (EV_A);
		1187	else
		1188	#endif
		1189	{
634	ev_now = ev_time ();	1190	ev_rt_now = ev_time ();
		1191	mn_now = ev_rt_now;
		1192	}
635		1193
636	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1194	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
637	block = 0.;	1195	block = 0.;
638	else	1196	else
639	{	1197	{
640	block = MAX_BLOCKTIME;	1198	block = MAX_BLOCKTIME;
641		1199
642	if (timercnt)	1200	if (timercnt)
643	{	1201	{
644	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
645	if (block > to) block = to;	1203	if (block > to) block = to;
646	}	1204	}
647		1205
		1206	#if EV_PERIODICS
648	if (periodiccnt)	1207	if (periodiccnt)
649	{	1208	{
650	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
651	if (block > to) block = to;	1210	if (block > to) block = to;
652	}	1211	}
		1212	#endif
653		1213
654	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
655	}	1215	}
656		1216
657	method_poll (block);	1217	method_poll (EV_A_ block);
658		1218
659	/* update ev_now, do magic */	1219	/* update ev_rt_now, do magic */
660	time_update ();	1220	time_update (EV_A);
661		1221
662	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
663	timers_reify (); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
664	periodics_reify (); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
665		1227
666	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
667	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
668	queue_events ((W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
669		1231
670	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
671	if (checkcnt)	1233	if (checkcnt)
672	queue_events ((W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
673		1235
674	call_pending ();	1236	call_pending (EV_A);
675	}	1237	}
676	while (!ev_loop_done);	1238	while (activecnt && !loop_done);
677		1239
678	if (ev_loop_done != 2)	1240	if (loop_done != 2)
679	ev_loop_done = 0;	1241	loop_done = 0;
		1242	}
		1243
		1244	void
		1245	ev_unloop (EV_P_ int how)
		1246	{
		1247	loop_done = how;
680	}	1248	}
681		1249
682	/*****************************************************************************/	1250	/*****************************************************************************/
683		1251
684	static void	1252	inline void
685	wlist_add (WL *head, WL elem)	1253	wlist_add (WL *head, WL elem)
686	{	1254	{
687	elem->next = *head;	1255	elem->next = *head;
688	*head = elem;	1256	*head = elem;
689	}	1257	}
690		1258
691	static void	1259	inline void
692	wlist_del (WL *head, WL elem)	1260	wlist_del (WL *head, WL elem)
693	{	1261	{
694	while (*head)	1262	while (*head)
695	{	1263	{
696	if (*head == elem)	1264	if (*head == elem)
…		…
701		1269
702	head = &(*head)->next;	1270	head = &(*head)->next;
703	}	1271	}
704	}	1272	}
705		1273
706	static void	1274	inline void
707	ev_clear (W w)	1275	ev_clear_pending (EV_P_ W w)
708	{	1276	{
709	if (w->pending)	1277	if (w->pending)
710	{	1278	{
711	pendings [w->pending - 1].w = 0;	1279	pendings [ABSPRI (w)][w->pending - 1].w = 0;
712	w->pending = 0;	1280	w->pending = 0;
713	}	1281	}
714	}	1282	}
715		1283
716	static void	1284	inline void
717	ev_start (W w, int active)	1285	ev_start (EV_P_ W w, int active)
718	{	1286	{
		1287	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1288	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1289
719	w->active = active;	1290	w->active = active;
		1291	ev_ref (EV_A);
720	}	1292	}
721		1293
722	static void	1294	inline void
723	ev_stop (W w)	1295	ev_stop (EV_P_ W w)
724	{	1296	{
		1297	ev_unref (EV_A);
725	w->active = 0;	1298	w->active = 0;
726	}	1299	}
727		1300
728	/*****************************************************************************/	1301	/*****************************************************************************/
729		1302
730	void	1303	void
731	evio_start (struct ev_io *w)	1304	ev_io_start (EV_P_ struct ev_io *w)
732	{	1305	{
		1306	int fd = w->fd;
		1307
733	if (ev_is_active (w))	1308	if (ev_is_active (w))
734	return;	1309	return;
735		1310
736	int fd = w->fd;	1311	assert (("ev_io_start called with negative fd", fd >= 0));
737		1312
738	ev_start ((W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
739	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
740	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
741		1316
742	++fdchangecnt;	1317	fd_change (EV_A_ fd);
743	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
744	fdchanges [fdchangecnt - 1] = fd;
745
746	if (w->fd == 9)
747	printf ("start %p:%x\n", w, w->events);//D
748	}	1318	}
749		1319
750	void	1320	void
751	evio_stop (struct ev_io *w)	1321	ev_io_stop (EV_P_ struct ev_io *w)
752	{	1322	{
753	if (w->fd == 9)	1323	ev_clear_pending (EV_A_ (W)w);
754	printf ("stop %p:%x\n", w, w->events);//D
755	ev_clear ((W)w);
756	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
757	return;	1325	return;
758		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
759	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
760	ev_stop ((W)w);	1330	ev_stop (EV_A_ (W)w);
761		1331
762	++fdchangecnt;	1332	fd_change (EV_A_ w->fd);
763	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
764	fdchanges [fdchangecnt - 1] = w->fd;
765	}	1333	}
766		1334
767	void	1335	void
768	evtimer_start (struct ev_timer *w)	1336	ev_timer_start (EV_P_ struct ev_timer *w)
769	{	1337	{
770	if (ev_is_active (w))	1338	if (ev_is_active (w))
771	return;	1339	return;
772		1340
773	w->at += now;	1341	((WT)w)->at += mn_now;
774		1342
775	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1343	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
776		1344
777	ev_start ((W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
778	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
779	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
780	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
781	}
782		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1351	}
		1352
783	void	1353	void
784	evtimer_stop (struct ev_timer *w)	1354	ev_timer_stop (EV_P_ struct ev_timer *w)
785	{	1355	{
786	ev_clear ((W)w);	1356	ev_clear_pending (EV_A_ (W)w);
787	if (!ev_is_active (w))	1357	if (!ev_is_active (w))
788	return;	1358	return;
789		1359
		1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1361
790	if (w->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
791	{	1363	{
792	timers [w->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
793	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
794	}	1366	}
795		1367
796	w->at = w->repeat;	1368	((WT)w)->at -= mn_now;
797		1369
798	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
799	}	1371	}
800		1372
801	void	1373	void
802	evtimer_again (struct ev_timer *w)	1374	ev_timer_again (EV_P_ struct ev_timer *w)
803	{	1375	{
804	if (ev_is_active (w))	1376	if (ev_is_active (w))
805	{	1377	{
806	if (w->repeat)	1378	if (w->repeat)
807	{	1379	{
808	w->at = now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
809	downheap ((WT *)timers, timercnt, w->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
810	}	1382	}
811	else	1383	else
812	evtimer_stop (w);	1384	ev_timer_stop (EV_A_ w);
813	}	1385	}
814	else if (w->repeat)	1386	else if (w->repeat)
		1387	{
		1388	w->at = w->repeat;
815	evtimer_start (w);	1389	ev_timer_start (EV_A_ w);
		1390	}
816	}	1391	}
817		1392
		1393	#if EV_PERIODICS
818	void	1394	void
819	evperiodic_start (struct ev_periodic *w)	1395	ev_periodic_start (EV_P_ struct ev_periodic *w)
820	{	1396	{
821	if (ev_is_active (w))	1397	if (ev_is_active (w))
822	return;	1398	return;
823		1399
824	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1400	if (w->reschedule_cb)
825		1401	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1402	else if (w->interval)
		1403	{
		1404	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
826	/* this formula differs from the one in periodic_reify because we do not always round up */	1405	/* this formula differs from the one in periodic_reify because we do not always round up */
827	if (w->interval)
828	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1406	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1407	}
829		1408
830	ev_start ((W)w, ++periodiccnt);	1409	ev_start (EV_A_ (W)w, ++periodiccnt);
831	array_needsize (periodics, periodicmax, periodiccnt, );	1410	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
832	periodics [periodiccnt - 1] = w;	1411	periodics [periodiccnt - 1] = w;
833	upheap ((WT *)periodics, periodiccnt - 1);	1412	upheap ((WT *)periodics, periodiccnt - 1);
834	}
835		1413
		1414	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1415	}
		1416
836	void	1417	void
837	evperiodic_stop (struct ev_periodic *w)	1418	ev_periodic_stop (EV_P_ struct ev_periodic *w)
838	{	1419	{
839	ev_clear ((W)w);	1420	ev_clear_pending (EV_A_ (W)w);
840	if (!ev_is_active (w))	1421	if (!ev_is_active (w))
841	return;	1422	return;
842		1423
		1424	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1425
843	if (w->active < periodiccnt--)	1426	if (((W)w)->active < periodiccnt--)
844	{	1427	{
845	periodics [w->active - 1] = periodics [periodiccnt];	1428	periodics [((W)w)->active - 1] = periodics [periodiccnt];
846	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1429	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
847	}	1430	}
848		1431
849	ev_stop ((W)w);	1432	ev_stop (EV_A_ (W)w);
850	}	1433	}
851		1434
852	void	1435	void
853	evsignal_start (struct ev_signal *w)	1436	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1437	{
		1438	/* TODO: use adjustheap and recalculation */
		1439	ev_periodic_stop (EV_A_ w);
		1440	ev_periodic_start (EV_A_ w);
		1441	}
		1442	#endif
		1443
		1444	void
		1445	ev_idle_start (EV_P_ struct ev_idle *w)
854	{	1446	{
855	if (ev_is_active (w))	1447	if (ev_is_active (w))
856	return;	1448	return;
857		1449
		1450	ev_start (EV_A_ (W)w, ++idlecnt);
		1451	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1452	idles [idlecnt - 1] = w;
		1453	}
		1454
		1455	void
		1456	ev_idle_stop (EV_P_ struct ev_idle *w)
		1457	{
		1458	ev_clear_pending (EV_A_ (W)w);
		1459	if (!ev_is_active (w))
		1460	return;
		1461
		1462	idles [((W)w)->active - 1] = idles [--idlecnt];
		1463	ev_stop (EV_A_ (W)w);
		1464	}
		1465
		1466	void
		1467	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1468	{
		1469	if (ev_is_active (w))
		1470	return;
		1471
		1472	ev_start (EV_A_ (W)w, ++preparecnt);
		1473	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1474	prepares [preparecnt - 1] = w;
		1475	}
		1476
		1477	void
		1478	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1479	{
		1480	ev_clear_pending (EV_A_ (W)w);
		1481	if (!ev_is_active (w))
		1482	return;
		1483
		1484	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1485	ev_stop (EV_A_ (W)w);
		1486	}
		1487
		1488	void
		1489	ev_check_start (EV_P_ struct ev_check *w)
		1490	{
		1491	if (ev_is_active (w))
		1492	return;
		1493
		1494	ev_start (EV_A_ (W)w, ++checkcnt);
		1495	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1496	checks [checkcnt - 1] = w;
		1497	}
		1498
		1499	void
		1500	ev_check_stop (EV_P_ struct ev_check *w)
		1501	{
		1502	ev_clear_pending (EV_A_ (W)w);
		1503	if (!ev_is_active (w))
		1504	return;
		1505
		1506	checks [((W)w)->active - 1] = checks [--checkcnt];
		1507	ev_stop (EV_A_ (W)w);
		1508	}
		1509
		1510	#ifndef SA_RESTART
		1511	# define SA_RESTART 0
		1512	#endif
		1513
		1514	void
		1515	ev_signal_start (EV_P_ struct ev_signal *w)
		1516	{
		1517	#if EV_MULTIPLICITY
		1518	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1519	#endif
		1520	if (ev_is_active (w))
		1521	return;
		1522
		1523	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1524
858	ev_start ((W)w, 1);	1525	ev_start (EV_A_ (W)w, 1);
859	array_needsize (signals, signalmax, w->signum, signals_init);	1526	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
860	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1527	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
861		1528
862	if (!w->next)	1529	if (!((WL)w)->next)
863	{	1530	{
		1531	#if _WIN32
		1532	signal (w->signum, sighandler);
		1533	#else
864	struct sigaction sa;	1534	struct sigaction sa;
865	sa.sa_handler = sighandler;	1535	sa.sa_handler = sighandler;
866	sigfillset (&sa.sa_mask);	1536	sigfillset (&sa.sa_mask);
867	sa.sa_flags = 0;	1537	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
868	sigaction (w->signum, &sa, 0);	1538	sigaction (w->signum, &sa, 0);
		1539	#endif
869	}	1540	}
870	}	1541	}
871		1542
872	void	1543	void
873	evsignal_stop (struct ev_signal *w)	1544	ev_signal_stop (EV_P_ struct ev_signal *w)
874	{	1545	{
875	ev_clear ((W)w);	1546	ev_clear_pending (EV_A_ (W)w);
876	if (!ev_is_active (w))	1547	if (!ev_is_active (w))
877	return;	1548	return;
878		1549
879	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
880	ev_stop ((W)w);	1551	ev_stop (EV_A_ (W)w);
881		1552
882	if (!signals [w->signum - 1].head)	1553	if (!signals [w->signum - 1].head)
883	signal (w->signum, SIG_DFL);	1554	signal (w->signum, SIG_DFL);
884	}	1555	}
885		1556
886	void evidle_start (struct ev_idle *w)	1557	void
		1558	ev_child_start (EV_P_ struct ev_child *w)
887	{	1559	{
		1560	#if EV_MULTIPLICITY
		1561	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1562	#endif
888	if (ev_is_active (w))	1563	if (ev_is_active (w))
889	return;	1564	return;
890		1565
891	ev_start ((W)w, ++idlecnt);
892	array_needsize (idles, idlemax, idlecnt, );
893	idles [idlecnt - 1] = w;
894	}
895
896	void evidle_stop (struct ev_idle *w)
897	{
898	ev_clear ((W)w);
899	if (ev_is_active (w))
900	return;
901
902	idles [w->active - 1] = idles [--idlecnt];
903	ev_stop ((W)w);
904	}
905
906	void evprepare_start (struct ev_prepare *w)
907	{
908	if (ev_is_active (w))
909	return;
910
911	ev_start ((W)w, ++preparecnt);
912	array_needsize (prepares, preparemax, preparecnt, );
913	prepares [preparecnt - 1] = w;
914	}
915
916	void evprepare_stop (struct ev_prepare *w)
917	{
918	ev_clear ((W)w);
919	if (ev_is_active (w))
920	return;
921
922	prepares [w->active - 1] = prepares [--preparecnt];
923	ev_stop ((W)w);
924	}
925
926	void evcheck_start (struct ev_check *w)
927	{
928	if (ev_is_active (w))
929	return;
930
931	ev_start ((W)w, ++checkcnt);
932	array_needsize (checks, checkmax, checkcnt, );
933	checks [checkcnt - 1] = w;
934	}
935
936	void evcheck_stop (struct ev_check *w)
937	{
938	ev_clear ((W)w);
939	if (ev_is_active (w))
940	return;
941
942	checks [w->active - 1] = checks [--checkcnt];
943	ev_stop ((W)w);
944	}
945
946	void evchild_start (struct ev_child *w)
947	{
948	if (ev_is_active (w))
949	return;
950
951	ev_start ((W)w, 1);	1566	ev_start (EV_A_ (W)w, 1);
952	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1567	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
953	}	1568	}
954		1569
		1570	void
955	void evchild_stop (struct ev_child *w)	1571	ev_child_stop (EV_P_ struct ev_child *w)
956	{	1572	{
957	ev_clear ((W)w);	1573	ev_clear_pending (EV_A_ (W)w);
958	if (ev_is_active (w))	1574	if (!ev_is_active (w))
959	return;	1575	return;
960		1576
961	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1577	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
962	ev_stop ((W)w);	1578	ev_stop (EV_A_ (W)w);
963	}	1579	}
964		1580
965	/*****************************************************************************/	1581	/*****************************************************************************/
966		1582
967	struct ev_once	1583	struct ev_once
…		…
971	void (cb)(int revents, void arg);	1587	void (cb)(int revents, void arg);
972	void *arg;	1588	void *arg;
973	};	1589	};
974		1590
975	static void	1591	static void
976	once_cb (struct ev_once *once, int revents)	1592	once_cb (EV_P_ struct ev_once *once, int revents)
977	{	1593	{
978	void (cb)(int revents, void arg) = once->cb;	1594	void (cb)(int revents, void arg) = once->cb;
979	void *arg = once->arg;	1595	void *arg = once->arg;
980		1596
981	evio_stop (&once->io);	1597	ev_io_stop (EV_A_ &once->io);
982	evtimer_stop (&once->to);	1598	ev_timer_stop (EV_A_ &once->to);
983	free (once);	1599	ev_free (once);
984		1600
985	cb (revents, arg);	1601	cb (revents, arg);
986	}	1602	}
987		1603
988	static void	1604	static void
989	once_cb_io (struct ev_io *w, int revents)	1605	once_cb_io (EV_P_ struct ev_io *w, int revents)
990	{	1606	{
991	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1607	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
992	}	1608	}
993		1609
994	static void	1610	static void
995	once_cb_to (struct ev_timer *w, int revents)	1611	once_cb_to (EV_P_ struct ev_timer *w, int revents)
996	{	1612	{
997	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1613	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
998	}	1614	}
999		1615
1000	void	1616	void
1001	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1617	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1002	{	1618	{
1003	struct ev_once *once = malloc (sizeof (struct ev_once));	1619	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1004		1620
1005	if (!once)	1621	if (!once)
1006	cb (EV_ERROR, arg);	1622	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1007	else	1623	else
1008	{	1624	{
1009	once->cb = cb;	1625	once->cb = cb;
1010	once->arg = arg;	1626	once->arg = arg;
1011		1627
1012	evw_init (&once->io, once_cb_io);	1628	ev_init (&once->io, once_cb_io);
1013
1014	if (fd >= 0)	1629	if (fd >= 0)
1015	{	1630	{
1016	evio_set (&once->io, fd, events);	1631	ev_io_set (&once->io, fd, events);
1017	evio_start (&once->io);	1632	ev_io_start (EV_A_ &once->io);
1018	}	1633	}
1019		1634
1020	evw_init (&once->to, once_cb_to);	1635	ev_init (&once->to, once_cb_to);
1021
1022	if (timeout >= 0.)	1636	if (timeout >= 0.)
1023	{	1637	{
1024	evtimer_set (&once->to, timeout, 0.);	1638	ev_timer_set (&once->to, timeout, 0.);
1025	evtimer_start (&once->to);	1639	ev_timer_start (EV_A_ &once->to);
1026	}	1640	}
1027	}	1641	}
1028	}	1642	}
1029		1643
1030	/*****************************************************************************/	1644	#ifdef __cplusplus
1031
1032	#if 0
1033
1034	struct ev_io wio;
1035
1036	static void
1037	sin_cb (struct ev_io *w, int revents)
1038	{
1039	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1040	}	1645	}
1041
1042	static void
1043	ocb (struct ev_timer *w, int revents)
1044	{
1045	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1046	evtimer_stop (w);
1047	evtimer_start (w);
1048	}
1049
1050	static void
1051	scb (struct ev_signal *w, int revents)
1052	{
1053	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1054	evio_stop (&wio);
1055	evio_start (&wio);
1056	}
1057
1058	static void
1059	gcb (struct ev_signal *w, int revents)
1060	{
1061	fprintf (stderr, "generic %x\n", revents);
1062
1063	}
1064
1065	int main (void)
1066	{
1067	ev_init (0);
1068
1069	evio_init (&wio, sin_cb, 0, EV_READ);
1070	evio_start (&wio);
1071
1072	struct ev_timer t[10000];
1073
1074	#if 0
1075	int i;
1076	for (i = 0; i < 10000; ++i)
1077	{
1078	struct ev_timer *w = t + i;
1079	evw_init (w, ocb, i);
1080	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
1081	evtimer_start (w);
1082	if (drand48 () < 0.5)
1083	evtimer_stop (w);
1084	}
1085	#endif	1646	#endif
1086		1647
1087	struct ev_timer t1;
1088	evtimer_init (&t1, ocb, 5, 10);
1089	evtimer_start (&t1);
1090
1091	struct ev_signal sig;
1092	evsignal_init (&sig, scb, SIGQUIT);
1093	evsignal_start (&sig);
1094
1095	struct ev_check cw;
1096	evcheck_init (&cw, gcb);
1097	evcheck_start (&cw);
1098
1099	struct ev_idle iw;
1100	evidle_init (&iw, gcb);
1101	evidle_start (&iw);
1102
1103	ev_loop (0);
1104
1105	return 0;
1106	}
1107
1108	#endif
1109
1110
1111
1112

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Comparing libev/ev.c (file contents): Revision 1.25 by root, Wed Oct 31 21:34:45 2007 UTC vs. Revision 1.113 by root, Mon Nov 12 08:00:05 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.25 by root, Wed Oct 31 21:34:45 2007 UTC vs.
Revision 1.113 by root, Mon Nov 12 08:00:05 2007 UTC