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

Comparing libev/ev.c (file contents):
Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.98 by root, Sun Nov 11 02:05:20 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
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 && 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
		78	#include <signal.h>
		79
		80	#ifndef WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#endif
		85	/**/
		86
46	#ifndef HAVE_MONOTONIC	87	#ifndef EV_USE_MONOTONIC
47	# ifdef CLOCK_MONOTONIC
48	# define HAVE_MONOTONIC 1	88	# define EV_USE_MONOTONIC 1
		89	#endif
		90
		91	#ifndef EV_USE_SELECT
		92	# define EV_USE_SELECT 1
		93	#endif
		94
		95	#ifndef EV_USE_POLL
		96	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		97	#endif
		98
		99	#ifndef EV_USE_EPOLL
		100	# define EV_USE_EPOLL 0
		101	#endif
		102
		103	#ifndef EV_USE_KQUEUE
		104	# define EV_USE_KQUEUE 0
		105	#endif
		106
		107	#ifndef EV_USE_WIN32
		108	# ifdef WIN32
		109	# define EV_USE_WIN32 0 /* it does not exist, use select */
		110	# undef EV_USE_SELECT
		111	# define EV_USE_SELECT 1
		112	# else
		113	# define EV_USE_WIN32 0
49	# endif	114	# endif
50	#endif	115	#endif
51		116
52	#ifndef HAVE_SELECT
53	# define HAVE_SELECT 1
54	#endif
55
56	#ifndef HAVE_EPOLL
57	# define HAVE_EPOLL 0
58	#endif
59
60	#ifndef HAVE_REALTIME	117	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	118	# define EV_USE_REALTIME 1
62	#endif	119	#endif
		120
		121	/**/
		122
		123	#ifndef CLOCK_MONOTONIC
		124	# undef EV_USE_MONOTONIC
		125	# define EV_USE_MONOTONIC 0
		126	#endif
		127
		128	#ifndef CLOCK_REALTIME
		129	# undef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
		131	#endif
		132
		133	/**/
63		134
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	135	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	136	#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 */	137	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		138	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
67		139
		140	#ifdef EV_H
		141	# include EV_H
		142	#else
68	#include "ev.h"	143	# include "ev.h"
		144	#endif
		145
		146	#if __GNUC__ >= 3
		147	# define expect(expr,value) __builtin_expect ((expr),(value))
		148	# define inline inline
		149	#else
		150	# define expect(expr,value) (expr)
		151	# define inline static
		152	#endif
		153
		154	#define expect_false(expr) expect ((expr) != 0, 0)
		155	#define expect_true(expr) expect ((expr) != 0, 1)
		156
		157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
69		159
70	typedef struct ev_watcher *W;	160	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	161	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	162	typedef struct ev_watcher_time *WT;
73		163
74	static ev_tstamp now, diff; /* monotonic clock */	164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		165
		166	#ifdef WIN32
		167	# include "ev_win32.c"
		168	#endif
		169
		170	/*****************************************************************************/
		171
		172	static void (syserr_cb)(const char msg);
		173
		174	void ev_set_syserr_cb (void (cb)(const char msg))
		175	{
		176	syserr_cb = cb;
		177	}
		178
		179	static void
		180	syserr (const char *msg)
		181	{
		182	if (!msg)
		183	msg = "(libev) system error";
		184
		185	if (syserr_cb)
		186	syserr_cb (msg);
		187	else
		188	{
		189	perror (msg);
		190	abort ();
		191	}
		192	}
		193
		194	static void (alloc)(void *ptr, long size);
		195
		196	void ev_set_allocator (void (cb)(void *ptr, long size))
		197	{
		198	alloc = cb;
		199	}
		200
		201	static void *
		202	ev_realloc (void *ptr, long size)
		203	{
		204	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		205
		206	if (!ptr && size)
		207	{
		208	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		209	abort ();
		210	}
		211
		212	return ptr;
		213	}
		214
		215	#define ev_malloc(size) ev_realloc (0, (size))
		216	#define ev_free(ptr) ev_realloc ((ptr), 0)
		217
		218	/*****************************************************************************/
		219
		220	typedef struct
		221	{
		222	WL head;
		223	unsigned char events;
		224	unsigned char reify;
		225	} ANFD;
		226
		227	typedef struct
		228	{
		229	W w;
		230	int events;
		231	} ANPENDING;
		232
		233	#if EV_MULTIPLICITY
		234
		235	struct ev_loop
		236	{
		237	ev_tstamp ev_rt_now;
		238	#define VAR(name,decl) decl;
		239	#include "ev_vars.h"
		240	#undef VAR
		241	};
		242	#include "ev_wrap.h"
		243
		244	struct ev_loop default_loop_struct;
		245	static struct ev_loop *default_loop;
		246
		247	#else
		248
75	ev_tstamp ev_now;	249	ev_tstamp ev_rt_now;
76	int ev_method;	250	#define VAR(name,decl) static decl;
		251	#include "ev_vars.h"
		252	#undef VAR
77		253
78	static int have_monotonic; /* runtime */	254	static int default_loop;
79		255
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	256	#endif
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		257
84	/*****************************************************************************/	258	/*****************************************************************************/
85		259
86	ev_tstamp	260	ev_tstamp
87	ev_time (void)	261	ev_time (void)
88	{	262	{
89	#if HAVE_REALTIME	263	#if EV_USE_REALTIME
90	struct timespec ts;	264	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	265	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	266	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	267	#else
94	struct timeval tv;	268	struct timeval tv;
95	gettimeofday (&tv, 0);	269	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	270	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	271	#endif
98	}	272	}
99		273
100	static ev_tstamp	274	inline ev_tstamp
101	get_clock (void)	275	get_clock (void)
102	{	276	{
103	#if HAVE_MONOTONIC	277	#if EV_USE_MONOTONIC
104	if (have_monotonic)	278	if (expect_true (have_monotonic))
105	{	279	{
106	struct timespec ts;	280	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	281	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	282	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	283	}
110	#endif	284	#endif
111		285
112	return ev_time ();	286	return ev_time ();
113	}	287	}
114		288
		289	#if EV_MULTIPLICITY
		290	ev_tstamp
		291	ev_now (EV_P)
		292	{
		293	return ev_rt_now;
		294	}
		295	#endif
		296
		297	#define array_roundsize(type,n) ((n) \| 4 & ~3)
		298
115	#define array_needsize(base,cur,cnt,init) \	299	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	300	if (expect_false ((cnt) > cur)) \
117	{ \	301	{ \
118	int newcnt = cur; \	302	int newcnt = cur; \
119	do \	303	do \
120	{ \	304	{ \
121	newcnt = (newcnt << 1) \| 4 & ~3; \	305	newcnt = array_roundsize (type, newcnt << 1); \
122	} \	306	} \
123	while ((cnt) > newcnt); \	307	while ((cnt) > newcnt); \
124	\	308	\
125	base = realloc (base, sizeof (base) (newcnt)); \	309	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
126	init (base + cur, newcnt - cur); \	310	init (base + cur, newcnt - cur); \
127	cur = newcnt; \	311	cur = newcnt; \
128	}	312	}
		313
		314	#define array_slim(type,stem) \
		315	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		316	{ \
		317	stem ## max = array_roundsize (stem ## cnt >> 1); \
		318	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		319	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		320	}
		321
		322	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		323	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		324	#define array_free_microshit(stem) \
		325	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		326
		327	#define array_free(stem, idx) \
		328	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		329
130	/*****************************************************************************/	330	/*****************************************************************************/
131
132	typedef struct
133	{
134	struct ev_io *head;
135	int events;
136	} ANFD;
137
138	static ANFD *anfds;
139	static int anfdmax;
140		331
141	static void	332	static void
142	anfds_init (ANFD *base, int count)	333	anfds_init (ANFD *base, int count)
143	{	334	{
144	while (count--)	335	while (count--)
145	{	336	{
146	base->head = 0;	337	base->head = 0;
147	base->events = EV_NONE;	338	base->events = EV_NONE;
		339	base->reify = 0;
		340
148	++base;	341	++base;
149	}	342	}
150	}	343	}
151		344
152	typedef struct	345	void
		346	ev_feed_event (EV_P_ void *w, int revents)
153	{	347	{
154	W w;	348	W w_ = (W)w;
155	int events;
156	} ANPENDING;
157		349
158	static ANPENDING *pendings;	350	if (w_->pending)
159	static int pendingmax, pendingcnt;
160
161	static void
162	event (W w, int events)
163	{
164	if (w->active)
165	{	351	{
166	w->pending = ++pendingcnt;
167	array_needsize (pendings, pendingmax, pendingcnt, );
168	pendings [pendingcnt - 1].w = w;
169	pendings [pendingcnt - 1].events = events;	352	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		353	return;
170	}	354	}
171	}
172		355
		356	w_->pending = ++pendingcnt [ABSPRI (w_)];
		357	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		358	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		359	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		360	}
		361
173	static void	362	static void
174	queue_events (W *events, int eventcnt, int type)	363	queue_events (EV_P_ W *events, int eventcnt, int type)
175	{	364	{
176	int i;	365	int i;
177		366
178	for (i = 0; i < eventcnt; ++i)	367	for (i = 0; i < eventcnt; ++i)
179	event (events [i], type);	368	ev_feed_event (EV_A_ events [i], type);
180	}	369	}
181		370
182	static void	371	inline void
183	fd_event (int fd, int events)	372	fd_event (EV_P_ int fd, int revents)
184	{	373	{
185	ANFD *anfd = anfds + fd;	374	ANFD *anfd = anfds + fd;
186	struct ev_io *w;	375	struct ev_io *w;
187		376
188	for (w = anfd->head; w; w = w->next)	377	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
189	{	378	{
190	int ev = w->events & events;	379	int ev = w->events & revents;
191		380
192	if (ev)	381	if (ev)
193	event ((W)w, ev);	382	ev_feed_event (EV_A_ (W)w, ev);
194	}	383	}
		384	}
		385
		386	void
		387	ev_feed_fd_event (EV_P_ int fd, int revents)
		388	{
		389	fd_event (EV_A_ fd, revents);
195	}	390	}
196		391
197	/*****************************************************************************/	392	/*****************************************************************************/
198		393
199	static int *fdchanges;
200	static int fdchangemax, fdchangecnt;
201
202	static void	394	static void
203	fd_reify (void)	395	fd_reify (EV_P)
204	{	396	{
205	int i;	397	int i;
206		398
207	for (i = 0; i < fdchangecnt; ++i)	399	for (i = 0; i < fdchangecnt; ++i)
208	{	400	{
…		…
210	ANFD *anfd = anfds + fd;	402	ANFD *anfd = anfds + fd;
211	struct ev_io *w;	403	struct ev_io *w;
212		404
213	int events = 0;	405	int events = 0;
214		406
215	for (w = anfd->head; w; w = w->next)	407	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
216	events \|= w->events;	408	events \|= w->events;
217		409
218	anfd->events &= ~EV_REIFY;	410	anfd->reify = 0;
219		411
220	if (anfd->events != events)
221	{
222	method_modify (fd, anfd->events, events);	412	method_modify (EV_A_ fd, anfd->events, events);
223	anfd->events = events;	413	anfd->events = events;
224	}
225	}	414	}
226		415
227	fdchangecnt = 0;	416	fdchangecnt = 0;
228	}	417	}
229		418
230	static void	419	static void
231	fd_change (int fd)	420	fd_change (EV_P_ int fd)
232	{	421	{
233	if (anfds [fd].events & EV_REIFY)	422	if (anfds [fd].reify)
234	return;	423	return;
235		424
236	anfds [fd].events \|= EV_REIFY;	425	anfds [fd].reify = 1;
237		426
238	++fdchangecnt;	427	++fdchangecnt;
239	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	428	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
240	fdchanges [fdchangecnt - 1] = fd;	429	fdchanges [fdchangecnt - 1] = fd;
241	}	430	}
242		431
		432	static void
		433	fd_kill (EV_P_ int fd)
		434	{
		435	struct ev_io *w;
		436
		437	while ((w = (struct ev_io *)anfds [fd].head))
		438	{
		439	ev_io_stop (EV_A_ w);
		440	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		441	}
		442	}
		443
		444	static int
		445	fd_valid (int fd)
		446	{
		447	#ifdef WIN32
		448	return !!win32_get_osfhandle (fd);
		449	#else
		450	return fcntl (fd, F_GETFD) != -1;
		451	#endif
		452	}
		453
243	/* called on EBADF to verify fds */	454	/* called on EBADF to verify fds */
244	static void	455	static void
245	fd_recheck (void)	456	fd_ebadf (EV_P)
246	{	457	{
247	int fd;	458	int fd;
248		459
249	for (fd = 0; fd < anfdmax; ++fd)	460	for (fd = 0; fd < anfdmax; ++fd)
250	if (anfds [fd].events)	461	if (anfds [fd].events)
251	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	462	if (!fd_valid (fd) == -1 && errno == EBADF)
252	while (anfds [fd].head)	463	fd_kill (EV_A_ fd);
		464	}
		465
		466	/* called on ENOMEM in select/poll to kill some fds and retry */
		467	static void
		468	fd_enomem (EV_P)
		469	{
		470	int fd;
		471
		472	for (fd = anfdmax; fd--; )
		473	if (anfds [fd].events)
253	{	474	{
254	event ((W)anfds [fd].head, EV_ERROR);	475	fd_kill (EV_A_ fd);
255	ev_io_stop (anfds [fd].head);	476	return;
256	}	477	}
		478	}
		479
		480	/* usually called after fork if method needs to re-arm all fds from scratch */
		481	static void
		482	fd_rearm_all (EV_P)
		483	{
		484	int fd;
		485
		486	/* this should be highly optimised to not do anything but set a flag */
		487	for (fd = 0; fd < anfdmax; ++fd)
		488	if (anfds [fd].events)
		489	{
		490	anfds [fd].events = 0;
		491	fd_change (EV_A_ fd);
		492	}
257	}	493	}
258		494
259	/*****************************************************************************/	495	/*****************************************************************************/
260		496
261	static struct ev_timer **timers;
262	static int timermax, timercnt;
263
264	static struct ev_periodic **periodics;
265	static int periodicmax, periodiccnt;
266
267	static void	497	static void
268	upheap (WT *timers, int k)	498	upheap (WT *heap, int k)
269	{	499	{
270	WT w = timers [k];	500	WT w = heap [k];
271		501
272	while (k && timers [k >> 1]->at > w->at)	502	while (k && heap [k >> 1]->at > w->at)
273	{	503	{
274	timers [k] = timers [k >> 1];	504	heap [k] = heap [k >> 1];
275	timers [k]->active = k + 1;	505	((W)heap [k])->active = k + 1;
276	k >>= 1;	506	k >>= 1;
277	}	507	}
278		508
279	timers [k] = w;	509	heap [k] = w;
280	timers [k]->active = k + 1;	510	((W)heap [k])->active = k + 1;
281		511
282	}	512	}
283		513
284	static void	514	static void
285	downheap (WT *timers, int N, int k)	515	downheap (WT *heap, int N, int k)
286	{	516	{
287	WT w = timers [k];	517	WT w = heap [k];
288		518
289	while (k < (N >> 1))	519	while (k < (N >> 1))
290	{	520	{
291	int j = k << 1;	521	int j = k << 1;
292		522
293	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	523	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
294	++j;	524	++j;
295		525
296	if (w->at <= timers [j]->at)	526	if (w->at <= heap [j]->at)
297	break;	527	break;
298		528
299	timers [k] = timers [j];	529	heap [k] = heap [j];
300	timers [k]->active = k + 1;	530	((W)heap [k])->active = k + 1;
301	k = j;	531	k = j;
302	}	532	}
303		533
304	timers [k] = w;	534	heap [k] = w;
305	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
		536	}
		537
		538	inline void
		539	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		540	{
		541	ev_tstamp old_at = heap [k]->at;
		542	heap [k]->at = at;
		543
		544	if (old_at < at)
		545	downheap (heap, N, k);
		546	else
		547	upheap (heap, k);
306	}	548	}
307		549
308	/*****************************************************************************/	550	/*****************************************************************************/
309		551
310	typedef struct	552	typedef struct
311	{	553	{
312	struct ev_signal *head;	554	WL head;
313	sig_atomic_t gotsig;	555	sig_atomic_t volatile gotsig;
314	} ANSIG;	556	} ANSIG;
315		557
316	static ANSIG *signals;	558	static ANSIG *signals;
317	static int signalmax;	559	static int signalmax;
318		560
319	static int sigpipe [2];	561	static int sigpipe [2];
320	static sig_atomic_t gotsig;	562	static sig_atomic_t volatile gotsig;
321	static struct ev_io sigev;	563	static struct ev_io sigev;
322		564
323	static void	565	static void
324	signals_init (ANSIG *base, int count)	566	signals_init (ANSIG *base, int count)
325	{	567	{
326	while (count--)	568	while (count--)
327	{	569	{
328	base->head = 0;	570	base->head = 0;
329	base->gotsig = 0;	571	base->gotsig = 0;
		572
330	++base;	573	++base;
331	}	574	}
332	}	575	}
333		576
334	static void	577	static void
335	sighandler (int signum)	578	sighandler (int signum)
336	{	579	{
		580	#if WIN32
		581	signal (signum, sighandler);
		582	#endif
		583
337	signals [signum - 1].gotsig = 1;	584	signals [signum - 1].gotsig = 1;
338		585
339	if (!gotsig)	586	if (!gotsig)
340	{	587	{
		588	int old_errno = errno;
341	gotsig = 1;	589	gotsig = 1;
		590	#ifdef WIN32
		591	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		592	#else
342	write (sigpipe [1], &gotsig, 1);	593	write (sigpipe [1], &signum, 1);
		594	#endif
		595	errno = old_errno;
343	}	596	}
344	}	597	}
345		598
		599	void
		600	ev_feed_signal_event (EV_P_ int signum)
		601	{
		602	WL w;
		603
		604	#if EV_MULTIPLICITY
		605	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		606	#endif
		607
		608	--signum;
		609
		610	if (signum < 0 \|\| signum >= signalmax)
		611	return;
		612
		613	signals [signum].gotsig = 0;
		614
		615	for (w = signals [signum].head; w; w = w->next)
		616	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		617	}
		618
346	static void	619	static void
347	sigcb (struct ev_io *iow, int revents)	620	sigcb (EV_P_ struct ev_io *iow, int revents)
348	{	621	{
349	struct ev_signal *w;
350	int sig;	622	int signum;
351		623
		624	#ifdef WIN32
		625	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		626	#else
		627	read (sigpipe [0], &revents, 1);
		628	#endif
352	gotsig = 0;	629	gotsig = 0;
353	read (sigpipe [0], &revents, 1);
354		630
355	for (sig = signalmax; sig--; )	631	for (signum = signalmax; signum--; )
356	if (signals [sig].gotsig)	632	if (signals [signum].gotsig)
357	{	633	ev_feed_signal_event (EV_A_ signum + 1);
358	signals [sig].gotsig = 0;
359
360	for (w = signals [sig].head; w; w = w->next)
361	event ((W)w, EV_SIGNAL);
362	}
363	}	634	}
364		635
365	static void	636	static void
366	siginit (void)	637	siginit (EV_P)
367	{	638	{
		639	#ifndef WIN32
368	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	640	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
369	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	641	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
370		642
371	/* rather than sort out wether we really need nb, set it */	643	/* rather than sort out wether we really need nb, set it */
372	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	644	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
373	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	645	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		646	#endif
374		647
375	ev_io_set (&sigev, sigpipe [0], EV_READ);	648	ev_io_set (&sigev, sigpipe [0], EV_READ);
376	ev_io_start (&sigev);	649	ev_io_start (EV_A_ &sigev);
		650	ev_unref (EV_A); /* child watcher should not keep loop alive */
377	}	651	}
378		652
379	/*****************************************************************************/	653	/*****************************************************************************/
380		654
381	static struct ev_idle **idles;
382	static int idlemax, idlecnt;
383
384	static struct ev_prepare **prepares;
385	static int preparemax, preparecnt;
386
387	static struct ev_check **checks;
388	static int checkmax, checkcnt;
389
390	/*****************************************************************************/
391
392	static struct ev_child *childs [PID_HASHSIZE];	655	static struct ev_child *childs [PID_HASHSIZE];
		656
		657	#ifndef WIN32
		658
393	static struct ev_signal childev;	659	static struct ev_signal childev;
394		660
395	#ifndef WCONTINUED	661	#ifndef WCONTINUED
396	# define WCONTINUED 0	662	# define WCONTINUED 0
397	#endif	663	#endif
398		664
399	static void	665	static void
400	childcb (struct ev_signal *sw, int revents)	666	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
401	{	667	{
402	struct ev_child *w;	668	struct ev_child *w;
		669
		670	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		671	if (w->pid == pid \|\| !w->pid)
		672	{
		673	ev_priority (w) = ev_priority (sw); /* need to do it now */
		674	w->rpid = pid;
		675	w->rstatus = status;
		676	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		677	}
		678	}
		679
		680	static void
		681	childcb (EV_P_ struct ev_signal *sw, int revents)
		682	{
403	int pid, status;	683	int pid, status;
404		684
405	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	685	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
406	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	686	{
407	if (w->pid == pid \|\| w->pid == -1)	687	/* make sure we are called again until all childs have been reaped */
408	{	688	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
409	w->status = status;	689
410	event ((W)w, EV_CHILD);	690	child_reap (EV_A_ sw, pid, pid, status);
411	}	691	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		692	}
412	}	693	}
		694
		695	#endif
413		696
414	/*****************************************************************************/	697	/*****************************************************************************/
415		698
		699	#if EV_USE_KQUEUE
		700	# include "ev_kqueue.c"
		701	#endif
416	#if HAVE_EPOLL	702	#if EV_USE_EPOLL
417	# include "ev_epoll.c"	703	# include "ev_epoll.c"
418	#endif	704	#endif
		705	#if EV_USE_POLL
		706	# include "ev_poll.c"
		707	#endif
419	#if HAVE_SELECT	708	#if EV_USE_SELECT
420	# include "ev_select.c"	709	# include "ev_select.c"
421	#endif	710	#endif
422		711
423	int	712	int
424	ev_version_major (void)	713	ev_version_major (void)
…		…
430	ev_version_minor (void)	719	ev_version_minor (void)
431	{	720	{
432	return EV_VERSION_MINOR;	721	return EV_VERSION_MINOR;
433	}	722	}
434		723
435	int ev_init (int flags)	724	/* return true if we are running with elevated privileges and should ignore env variables */
		725	static int
		726	enable_secure (void)
436	{	727	{
		728	#ifdef WIN32
		729	return 0;
		730	#else
		731	return getuid () != geteuid ()
		732	\|\| getgid () != getegid ();
		733	#endif
		734	}
		735
		736	int
		737	ev_method (EV_P)
		738	{
		739	return method;
		740	}
		741
		742	static void
		743	loop_init (EV_P_ int methods)
		744	{
437	if (!ev_method)	745	if (!method)
438	{	746	{
439	#if HAVE_MONOTONIC	747	#if EV_USE_MONOTONIC
440	{	748	{
441	struct timespec ts;	749	struct timespec ts;
442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	750	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
443	have_monotonic = 1;	751	have_monotonic = 1;
444	}	752	}
445	#endif	753	#endif
446		754
447	ev_now = ev_time ();	755	ev_rt_now = ev_time ();
448	now = get_clock ();	756	mn_now = get_clock ();
		757	now_floor = mn_now;
449	diff = ev_now - now;	758	rtmn_diff = ev_rt_now - mn_now;
450		759
		760	if (methods == EVMETHOD_AUTO)
		761	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		762	methods = atoi (getenv ("LIBEV_METHODS"));
		763	else
		764	methods = EVMETHOD_ANY;
		765
		766	method = 0;
		767	#if EV_USE_WIN32
		768	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		769	#endif
		770	#if EV_USE_KQUEUE
		771	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		772	#endif
		773	#if EV_USE_EPOLL
		774	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		775	#endif
		776	#if EV_USE_POLL
		777	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		778	#endif
		779	#if EV_USE_SELECT
		780	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
		781	#endif
		782
		783	ev_init (&sigev, sigcb);
		784	ev_set_priority (&sigev, EV_MAXPRI);
		785	}
		786	}
		787
		788	void
		789	loop_destroy (EV_P)
		790	{
		791	int i;
		792
		793	#if EV_USE_WIN32
		794	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		795	#endif
		796	#if EV_USE_KQUEUE
		797	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		798	#endif
		799	#if EV_USE_EPOLL
		800	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		801	#endif
		802	#if EV_USE_POLL
		803	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		804	#endif
		805	#if EV_USE_SELECT
		806	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		807	#endif
		808
		809	for (i = NUMPRI; i--; )
		810	array_free (pending, [i]);
		811
		812	/* have to use the microsoft-never-gets-it-right macro */
		813	array_free_microshit (fdchange);
		814	array_free_microshit (timer);
		815	#if EV_PERIODICS
		816	array_free_microshit (periodic);
		817	#endif
		818	array_free_microshit (idle);
		819	array_free_microshit (prepare);
		820	array_free_microshit (check);
		821
		822	method = 0;
		823	}
		824
		825	static void
		826	loop_fork (EV_P)
		827	{
		828	#if EV_USE_EPOLL
		829	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		830	#endif
		831	#if EV_USE_KQUEUE
		832	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		833	#endif
		834
		835	if (ev_is_active (&sigev))
		836	{
		837	/* default loop */
		838
		839	ev_ref (EV_A);
		840	ev_io_stop (EV_A_ &sigev);
		841	close (sigpipe [0]);
		842	close (sigpipe [1]);
		843
		844	while (pipe (sigpipe))
		845	syserr ("(libev) error creating pipe");
		846
		847	siginit (EV_A);
		848	}
		849
		850	postfork = 0;
		851	}
		852
		853	#if EV_MULTIPLICITY
		854	struct ev_loop *
		855	ev_loop_new (int methods)
		856	{
		857	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		858
		859	memset (loop, 0, sizeof (struct ev_loop));
		860
		861	loop_init (EV_A_ methods);
		862
		863	if (ev_method (EV_A))
		864	return loop;
		865
		866	return 0;
		867	}
		868
		869	void
		870	ev_loop_destroy (EV_P)
		871	{
		872	loop_destroy (EV_A);
		873	ev_free (loop);
		874	}
		875
		876	void
		877	ev_loop_fork (EV_P)
		878	{
		879	postfork = 1;
		880	}
		881
		882	#endif
		883
		884	#if EV_MULTIPLICITY
		885	struct ev_loop *
		886	#else
		887	int
		888	#endif
		889	ev_default_loop (int methods)
		890	{
		891	if (sigpipe [0] == sigpipe [1])
451	if (pipe (sigpipe))	892	if (pipe (sigpipe))
452	return 0;	893	return 0;
453		894
454	ev_method = EVMETHOD_NONE;	895	if (!default_loop)
455	#if HAVE_EPOLL	896	{
456	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	897	#if EV_MULTIPLICITY
		898	struct ev_loop *loop = default_loop = &default_loop_struct;
		899	#else
		900	default_loop = 1;
457	#endif	901	#endif
458	#if HAVE_SELECT
459	if (ev_method == EVMETHOD_NONE) select_init (flags);
460	#endif
461		902
		903	loop_init (EV_A_ methods);
		904
462	if (ev_method)	905	if (ev_method (EV_A))
463	{	906	{
464	ev_watcher_init (&sigev, sigcb);
465	siginit ();	907	siginit (EV_A);
466		908
		909	#ifndef WIN32
467	ev_signal_init (&childev, childcb, SIGCHLD);	910	ev_signal_init (&childev, childcb, SIGCHLD);
		911	ev_set_priority (&childev, EV_MAXPRI);
468	ev_signal_start (&childev);	912	ev_signal_start (EV_A_ &childev);
		913	ev_unref (EV_A); /* child watcher should not keep loop alive */
		914	#endif
469	}	915	}
		916	else
		917	default_loop = 0;
470	}	918	}
471		919
472	return ev_method;	920	return default_loop;
		921	}
		922
		923	void
		924	ev_default_destroy (void)
		925	{
		926	#if EV_MULTIPLICITY
		927	struct ev_loop *loop = default_loop;
		928	#endif
		929
		930	#ifndef WIN32
		931	ev_ref (EV_A); /* child watcher */
		932	ev_signal_stop (EV_A_ &childev);
		933	#endif
		934
		935	ev_ref (EV_A); /* signal watcher */
		936	ev_io_stop (EV_A_ &sigev);
		937
		938	close (sigpipe [0]); sigpipe [0] = 0;
		939	close (sigpipe [1]); sigpipe [1] = 0;
		940
		941	loop_destroy (EV_A);
		942	}
		943
		944	void
		945	ev_default_fork (void)
		946	{
		947	#if EV_MULTIPLICITY
		948	struct ev_loop *loop = default_loop;
		949	#endif
		950
		951	if (method)
		952	postfork = 1;
473	}	953	}
474		954
475	/*****************************************************************************/	955	/*****************************************************************************/
476		956
477	void
478	ev_prefork (void)
479	{
480	/* nop */
481	}
482
483	void
484	ev_postfork_parent (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_child (void)
491	{
492	#if HAVE_EPOLL
493	if (ev_method == EVMETHOD_EPOLL)
494	epoll_postfork_child ();
495	#endif
496
497	ev_io_stop (&sigev);
498	close (sigpipe [0]);
499	close (sigpipe [1]);
500	pipe (sigpipe);
501	siginit ();
502	}
503
504	/*****************************************************************************/
505
506	static void	957	static int
		958	any_pending (EV_P)
		959	{
		960	int pri;
		961
		962	for (pri = NUMPRI; pri--; )
		963	if (pendingcnt [pri])
		964	return 1;
		965
		966	return 0;
		967	}
		968
		969	static void
507	call_pending (void)	970	call_pending (EV_P)
508	{	971	{
		972	int pri;
		973
		974	for (pri = NUMPRI; pri--; )
509	while (pendingcnt)	975	while (pendingcnt [pri])
510	{	976	{
511	ANPENDING *p = pendings + --pendingcnt;	977	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
512		978
513	if (p->w)	979	if (p->w)
514	{	980	{
515	p->w->pending = 0;	981	p->w->pending = 0;
516	p->w->cb (p->w, p->events);	982	EV_CB_INVOKE (p->w, p->events);
517	}	983	}
518	}	984	}
519	}	985	}
520		986
521	static void	987	static void
522	timers_reify (void)	988	timers_reify (EV_P)
523	{	989	{
524	while (timercnt && timers [0]->at <= now)	990	while (timercnt && ((WT)timers [0])->at <= mn_now)
525	{	991	{
526	struct ev_timer *w = timers [0];	992	struct ev_timer *w = timers [0];
527		993
528	event ((W)w, EV_TIMEOUT);	994	assert (("inactive timer on timer heap detected", ev_is_active (w)));
529		995
530	/* first reschedule or stop timer */	996	/* first reschedule or stop timer */
531	if (w->repeat)	997	if (w->repeat)
532	{	998	{
		999	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1000
533	w->at = now + w->repeat;	1001	((WT)w)->at += w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));	1002	if (((WT)w)->at < mn_now)
		1003	((WT)w)->at = mn_now;
		1004
535	downheap ((WT *)timers, timercnt, 0);	1005	downheap ((WT *)timers, timercnt, 0);
536	}	1006	}
537	else	1007	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	1008	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539	}
540	}
541		1009
		1010	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1011	}
		1012	}
		1013
		1014	#if EV_PERIODICS
542	static void	1015	static void
543	periodics_reify (void)	1016	periodics_reify (EV_P)
544	{	1017	{
545	while (periodiccnt && periodics [0]->at <= ev_now)	1018	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
546	{	1019	{
547	struct ev_periodic *w = periodics [0];	1020	struct ev_periodic *w = periodics [0];
548		1021
		1022	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1023
549	/* first reschedule or stop timer */	1024	/* first reschedule or stop timer */
550	if (w->interval)	1025	if (w->reschedule_cb)
551	{	1026	{
		1027	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1028
		1029	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1030	downheap ((WT *)periodics, periodiccnt, 0);
		1031	}
		1032	else if (w->interval)
		1033	{
552	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1034	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
553	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1035	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
554	downheap ((WT *)periodics, periodiccnt, 0);	1036	downheap ((WT *)periodics, periodiccnt, 0);
555	}	1037	}
556	else	1038	else
557	ev_periodic_stop (w); /* nonrepeating: stop timer */	1039	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
558		1040
559	event ((W)w, EV_TIMEOUT);	1041	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
560	}	1042	}
561	}	1043	}
562		1044
563	static void	1045	static void
564	periodics_reschedule (ev_tstamp diff)	1046	periodics_reschedule (EV_P)
565	{	1047	{
566	int i;	1048	int i;
567		1049
568	/* adjust periodics after time jump */	1050	/* adjust periodics after time jump */
569	for (i = 0; i < periodiccnt; ++i)	1051	for (i = 0; i < periodiccnt; ++i)
570	{	1052	{
571	struct ev_periodic *w = periodics [i];	1053	struct ev_periodic *w = periodics [i];
572		1054
		1055	if (w->reschedule_cb)
		1056	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
573	if (w->interval)	1057	else if (w->interval)
		1058	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1059	}
		1060
		1061	/* now rebuild the heap */
		1062	for (i = periodiccnt >> 1; i--; )
		1063	downheap ((WT *)periodics, periodiccnt, i);
		1064	}
		1065	#endif
		1066
		1067	inline int
		1068	time_update_monotonic (EV_P)
		1069	{
		1070	mn_now = get_clock ();
		1071
		1072	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1073	{
		1074	ev_rt_now = rtmn_diff + mn_now;
		1075	return 0;
		1076	}
		1077	else
		1078	{
		1079	now_floor = mn_now;
		1080	ev_rt_now = ev_time ();
		1081	return 1;
		1082	}
		1083	}
		1084
		1085	static void
		1086	time_update (EV_P)
		1087	{
		1088	int i;
		1089
		1090	#if EV_USE_MONOTONIC
		1091	if (expect_true (have_monotonic))
		1092	{
		1093	if (time_update_monotonic (EV_A))
574	{	1094	{
575	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1095	ev_tstamp odiff = rtmn_diff;
576		1096
577	if (fabs (diff) >= 1e-4)	1097	for (i = 4; --i; ) /* loop a few times, before making important decisions */
578	{	1098	{
579	ev_periodic_stop (w);	1099	rtmn_diff = ev_rt_now - mn_now;
580	ev_periodic_start (w);
581		1100
582	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1101	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1102	return; /* all is well */
		1103
		1104	ev_rt_now = ev_time ();
		1105	mn_now = get_clock ();
		1106	now_floor = mn_now;
583	}	1107	}
		1108
		1109	# if EV_PERIODICS
		1110	periodics_reschedule (EV_A);
		1111	# endif
		1112	/* no timer adjustment, as the monotonic clock doesn't jump */
		1113	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
584	}	1114	}
585	}	1115	}
586	}	1116	else
587		1117	#endif
588	static void	1118	{
589	time_update (void)
590	{
591	int i;
592
593	ev_now = ev_time ();	1119	ev_rt_now = ev_time ();
594		1120
595	if (have_monotonic)	1121	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
596	{
597	ev_tstamp odiff = diff;
598
599	for (i = 4; --i; ) /* loop a few times, before making important decisions */
600	{	1122	{
601	now = get_clock ();	1123	#if EV_PERIODICS
602	diff = ev_now - now;
603
604	if (fabs (odiff - diff) < MIN_TIMEJUMP)
605	return; /* all is well */
606
607	ev_now = ev_time ();
608	}
609
610	periodics_reschedule (diff - odiff);
611	/* no timer adjustment, as the monotonic clock doesn't jump */
612	}
613	else
614	{
615	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
616	{
617	periodics_reschedule (ev_now - now);	1124	periodics_reschedule (EV_A);
		1125	#endif
618		1126
619	/* adjust timers. this is easy, as the offset is the same for all */	1127	/* adjust timers. this is easy, as the offset is the same for all */
620	for (i = 0; i < timercnt; ++i)	1128	for (i = 0; i < timercnt; ++i)
621	timers [i]->at += diff;	1129	((WT)timers [i])->at += ev_rt_now - mn_now;
622	}	1130	}
623		1131
624	now = ev_now;	1132	mn_now = ev_rt_now;
625	}	1133	}
626	}	1134	}
627		1135
628	int ev_loop_done;	1136	void
		1137	ev_ref (EV_P)
		1138	{
		1139	++activecnt;
		1140	}
629		1141
		1142	void
		1143	ev_unref (EV_P)
		1144	{
		1145	--activecnt;
		1146	}
		1147
		1148	static int loop_done;
		1149
		1150	void
630	void ev_loop (int flags)	1151	ev_loop (EV_P_ int flags)
631	{	1152	{
632	double block;	1153	double block;
633	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1154	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
634		1155
635	do	1156	do
636	{	1157	{
637	/* queue check watchers (and execute them) */	1158	/* queue check watchers (and execute them) */
638	if (preparecnt)	1159	if (expect_false (preparecnt))
639	{	1160	{
640	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1161	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
641	call_pending ();	1162	call_pending (EV_A);
642	}	1163	}
643		1164
		1165	/* we might have forked, so reify kernel state if necessary */
		1166	if (expect_false (postfork))
		1167	loop_fork (EV_A);
		1168
644	/* update fd-related kernel structures */	1169	/* update fd-related kernel structures */
645	fd_reify ();	1170	fd_reify (EV_A);
646		1171
647	/* calculate blocking time */	1172	/* calculate blocking time */
648		1173
649	/* we only need this for !monotonic clockor timers, but as we basically	1174	/* we only need this for !monotonic clock or timers, but as we basically
650	always have timers, we just calculate it always */	1175	always have timers, we just calculate it always */
		1176	#if EV_USE_MONOTONIC
		1177	if (expect_true (have_monotonic))
		1178	time_update_monotonic (EV_A);
		1179	else
		1180	#endif
		1181	{
651	ev_now = ev_time ();	1182	ev_rt_now = ev_time ();
		1183	mn_now = ev_rt_now;
		1184	}
652		1185
653	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1186	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
654	block = 0.;	1187	block = 0.;
655	else	1188	else
656	{	1189	{
657	block = MAX_BLOCKTIME;	1190	block = MAX_BLOCKTIME;
658		1191
659	if (timercnt)	1192	if (timercnt)
660	{	1193	{
661	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1194	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
662	if (block > to) block = to;	1195	if (block > to) block = to;
663	}	1196	}
664		1197
		1198	#if EV_PERIODICS
665	if (periodiccnt)	1199	if (periodiccnt)
666	{	1200	{
667	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1201	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
668	if (block > to) block = to;	1202	if (block > to) block = to;
669	}	1203	}
		1204	#endif
670		1205
671	if (block < 0.) block = 0.;	1206	if (block < 0.) block = 0.;
672	}	1207	}
673		1208
674	method_poll (block);	1209	method_poll (EV_A_ block);
675		1210
676	/* update ev_now, do magic */	1211	/* update ev_rt_now, do magic */
677	time_update ();	1212	time_update (EV_A);
678		1213
679	/* queue pending timers and reschedule them */	1214	/* queue pending timers and reschedule them */
680	timers_reify (); /* relative timers called last */	1215	timers_reify (EV_A); /* relative timers called last */
		1216	#if EV_PERIODICS
681	periodics_reify (); /* absolute timers called first */	1217	periodics_reify (EV_A); /* absolute timers called first */
		1218	#endif
682		1219
683	/* queue idle watchers unless io or timers are pending */	1220	/* queue idle watchers unless io or timers are pending */
684	if (!pendingcnt)	1221	if (idlecnt && !any_pending (EV_A))
685	queue_events ((W *)idles, idlecnt, EV_IDLE);	1222	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
686		1223
687	/* queue check watchers, to be executed first */	1224	/* queue check watchers, to be executed first */
688	if (checkcnt)	1225	if (checkcnt)
689	queue_events ((W *)checks, checkcnt, EV_CHECK);	1226	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
690		1227
691	call_pending ();	1228	call_pending (EV_A);
692	}	1229	}
693	while (!ev_loop_done);	1230	while (activecnt && !loop_done);
694		1231
695	if (ev_loop_done != 2)	1232	if (loop_done != 2)
696	ev_loop_done = 0;	1233	loop_done = 0;
		1234	}
		1235
		1236	void
		1237	ev_unloop (EV_P_ int how)
		1238	{
		1239	loop_done = how;
697	}	1240	}
698		1241
699	/*****************************************************************************/	1242	/*****************************************************************************/
700		1243
701	static void	1244	inline void
702	wlist_add (WL *head, WL elem)	1245	wlist_add (WL *head, WL elem)
703	{	1246	{
704	elem->next = *head;	1247	elem->next = *head;
705	*head = elem;	1248	*head = elem;
706	}	1249	}
707		1250
708	static void	1251	inline void
709	wlist_del (WL *head, WL elem)	1252	wlist_del (WL *head, WL elem)
710	{	1253	{
711	while (*head)	1254	while (*head)
712	{	1255	{
713	if (*head == elem)	1256	if (*head == elem)
…		…
718		1261
719	head = &(*head)->next;	1262	head = &(*head)->next;
720	}	1263	}
721	}	1264	}
722		1265
723	static void	1266	inline void
724	ev_clear (W w)	1267	ev_clear_pending (EV_P_ W w)
725	{	1268	{
726	if (w->pending)	1269	if (w->pending)
727	{	1270	{
728	pendings [w->pending - 1].w = 0;	1271	pendings [ABSPRI (w)][w->pending - 1].w = 0;
729	w->pending = 0;	1272	w->pending = 0;
730	}	1273	}
731	}	1274	}
732		1275
733	static void	1276	inline void
734	ev_start (W w, int active)	1277	ev_start (EV_P_ W w, int active)
735	{	1278	{
		1279	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1280	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1281
736	w->active = active;	1282	w->active = active;
		1283	ev_ref (EV_A);
737	}	1284	}
738		1285
739	static void	1286	inline void
740	ev_stop (W w)	1287	ev_stop (EV_P_ W w)
741	{	1288	{
		1289	ev_unref (EV_A);
742	w->active = 0;	1290	w->active = 0;
743	}	1291	}
744		1292
745	/*****************************************************************************/	1293	/*****************************************************************************/
746		1294
747	void	1295	void
748	ev_io_start (struct ev_io *w)	1296	ev_io_start (EV_P_ struct ev_io *w)
749	{	1297	{
		1298	int fd = w->fd;
		1299
750	if (ev_is_active (w))	1300	if (ev_is_active (w))
751	return;	1301	return;
752		1302
753	int fd = w->fd;	1303	assert (("ev_io_start called with negative fd", fd >= 0));
754		1304
755	ev_start ((W)w, 1);	1305	ev_start (EV_A_ (W)w, 1);
756	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1306	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
757	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1307	wlist_add ((WL *)&anfds[fd].head, (WL)w);
758		1308
759	fd_change (fd);	1309	fd_change (EV_A_ fd);
760	}	1310	}
761		1311
762	void	1312	void
763	ev_io_stop (struct ev_io *w)	1313	ev_io_stop (EV_P_ struct ev_io *w)
764	{	1314	{
765	ev_clear ((W)w);	1315	ev_clear_pending (EV_A_ (W)w);
766	if (!ev_is_active (w))	1316	if (!ev_is_active (w))
767	return;	1317	return;
768		1318
		1319	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1320
769	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1321	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
770	ev_stop ((W)w);	1322	ev_stop (EV_A_ (W)w);
771		1323
772	fd_change (w->fd);	1324	fd_change (EV_A_ w->fd);
773	}	1325	}
774		1326
775	void	1327	void
776	ev_timer_start (struct ev_timer *w)	1328	ev_timer_start (EV_P_ struct ev_timer *w)
777	{	1329	{
778	if (ev_is_active (w))	1330	if (ev_is_active (w))
779	return;	1331	return;
780		1332
781	w->at += now;	1333	((WT)w)->at += mn_now;
782		1334
783	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1335	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
784		1336
785	ev_start ((W)w, ++timercnt);	1337	ev_start (EV_A_ (W)w, ++timercnt);
786	array_needsize (timers, timermax, timercnt, );	1338	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
787	timers [timercnt - 1] = w;	1339	timers [timercnt - 1] = w;
788	upheap ((WT *)timers, timercnt - 1);	1340	upheap ((WT *)timers, timercnt - 1);
789	}
790		1341
		1342	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1343	}
		1344
791	void	1345	void
792	ev_timer_stop (struct ev_timer *w)	1346	ev_timer_stop (EV_P_ struct ev_timer *w)
793	{	1347	{
794	ev_clear ((W)w);	1348	ev_clear_pending (EV_A_ (W)w);
795	if (!ev_is_active (w))	1349	if (!ev_is_active (w))
796	return;	1350	return;
797		1351
		1352	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1353
798	if (w->active < timercnt--)	1354	if (((W)w)->active < timercnt--)
799	{	1355	{
800	timers [w->active - 1] = timers [timercnt];	1356	timers [((W)w)->active - 1] = timers [timercnt];
801	downheap ((WT *)timers, timercnt, w->active - 1);	1357	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
802	}	1358	}
803		1359
804	w->at = w->repeat;	1360	((WT)w)->at -= mn_now;
805		1361
806	ev_stop ((W)w);	1362	ev_stop (EV_A_ (W)w);
807	}	1363	}
808		1364
809	void	1365	void
810	ev_timer_again (struct ev_timer *w)	1366	ev_timer_again (EV_P_ struct ev_timer *w)
811	{	1367	{
812	if (ev_is_active (w))	1368	if (ev_is_active (w))
813	{	1369	{
814	if (w->repeat)	1370	if (w->repeat)
815	{
816	w->at = now + w->repeat;
817	downheap ((WT *)timers, timercnt, w->active - 1);	1371	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
818	}
819	else	1372	else
820	ev_timer_stop (w);	1373	ev_timer_stop (EV_A_ w);
821	}	1374	}
822	else if (w->repeat)	1375	else if (w->repeat)
823	ev_timer_start (w);	1376	ev_timer_start (EV_A_ w);
824	}	1377	}
825		1378
		1379	#if EV_PERIODICS
826	void	1380	void
827	ev_periodic_start (struct ev_periodic *w)	1381	ev_periodic_start (EV_P_ struct ev_periodic *w)
828	{	1382	{
829	if (ev_is_active (w))	1383	if (ev_is_active (w))
830	return;	1384	return;
831		1385
832	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1386	if (w->reschedule_cb)
833		1387	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1388	else if (w->interval)
		1389	{
		1390	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
834	/* this formula differs from the one in periodic_reify because we do not always round up */	1391	/* this formula differs from the one in periodic_reify because we do not always round up */
835	if (w->interval)
836	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1392	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1393	}
837		1394
838	ev_start ((W)w, ++periodiccnt);	1395	ev_start (EV_A_ (W)w, ++periodiccnt);
839	array_needsize (periodics, periodicmax, periodiccnt, );	1396	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
840	periodics [periodiccnt - 1] = w;	1397	periodics [periodiccnt - 1] = w;
841	upheap ((WT *)periodics, periodiccnt - 1);	1398	upheap ((WT *)periodics, periodiccnt - 1);
842	}
843		1399
		1400	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1401	}
		1402
844	void	1403	void
845	ev_periodic_stop (struct ev_periodic *w)	1404	ev_periodic_stop (EV_P_ struct ev_periodic *w)
846	{	1405	{
847	ev_clear ((W)w);	1406	ev_clear_pending (EV_A_ (W)w);
848	if (!ev_is_active (w))	1407	if (!ev_is_active (w))
849	return;	1408	return;
850		1409
		1410	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1411
851	if (w->active < periodiccnt--)	1412	if (((W)w)->active < periodiccnt--)
852	{	1413	{
853	periodics [w->active - 1] = periodics [periodiccnt];	1414	periodics [((W)w)->active - 1] = periodics [periodiccnt];
854	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1415	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
855	}	1416	}
856		1417
857	ev_stop ((W)w);	1418	ev_stop (EV_A_ (W)w);
858	}	1419	}
859		1420
860	void	1421	void
		1422	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1423	{
		1424	/* TODO: use adjustheap and recalculation */
		1425	ev_periodic_stop (EV_A_ w);
		1426	ev_periodic_start (EV_A_ w);
		1427	}
		1428	#endif
		1429
		1430	void
861	ev_signal_start (struct ev_signal *w)	1431	ev_idle_start (EV_P_ struct ev_idle *w)
862	{	1432	{
863	if (ev_is_active (w))	1433	if (ev_is_active (w))
864	return;	1434	return;
865		1435
		1436	ev_start (EV_A_ (W)w, ++idlecnt);
		1437	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1438	idles [idlecnt - 1] = w;
		1439	}
		1440
		1441	void
		1442	ev_idle_stop (EV_P_ struct ev_idle *w)
		1443	{
		1444	ev_clear_pending (EV_A_ (W)w);
		1445	if (ev_is_active (w))
		1446	return;
		1447
		1448	idles [((W)w)->active - 1] = idles [--idlecnt];
		1449	ev_stop (EV_A_ (W)w);
		1450	}
		1451
		1452	void
		1453	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1454	{
		1455	if (ev_is_active (w))
		1456	return;
		1457
		1458	ev_start (EV_A_ (W)w, ++preparecnt);
		1459	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1460	prepares [preparecnt - 1] = w;
		1461	}
		1462
		1463	void
		1464	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1465	{
		1466	ev_clear_pending (EV_A_ (W)w);
		1467	if (ev_is_active (w))
		1468	return;
		1469
		1470	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1471	ev_stop (EV_A_ (W)w);
		1472	}
		1473
		1474	void
		1475	ev_check_start (EV_P_ struct ev_check *w)
		1476	{
		1477	if (ev_is_active (w))
		1478	return;
		1479
		1480	ev_start (EV_A_ (W)w, ++checkcnt);
		1481	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1482	checks [checkcnt - 1] = w;
		1483	}
		1484
		1485	void
		1486	ev_check_stop (EV_P_ struct ev_check *w)
		1487	{
		1488	ev_clear_pending (EV_A_ (W)w);
		1489	if (!ev_is_active (w))
		1490	return;
		1491
		1492	checks [((W)w)->active - 1] = checks [--checkcnt];
		1493	ev_stop (EV_A_ (W)w);
		1494	}
		1495
		1496	#ifndef SA_RESTART
		1497	# define SA_RESTART 0
		1498	#endif
		1499
		1500	void
		1501	ev_signal_start (EV_P_ struct ev_signal *w)
		1502	{
		1503	#if EV_MULTIPLICITY
		1504	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1505	#endif
		1506	if (ev_is_active (w))
		1507	return;
		1508
		1509	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1510
866	ev_start ((W)w, 1);	1511	ev_start (EV_A_ (W)w, 1);
867	array_needsize (signals, signalmax, w->signum, signals_init);	1512	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
868	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1513	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
869		1514
870	if (!w->next)	1515	if (!((WL)w)->next)
871	{	1516	{
		1517	#if WIN32
		1518	signal (w->signum, sighandler);
		1519	#else
872	struct sigaction sa;	1520	struct sigaction sa;
873	sa.sa_handler = sighandler;	1521	sa.sa_handler = sighandler;
874	sigfillset (&sa.sa_mask);	1522	sigfillset (&sa.sa_mask);
875	sa.sa_flags = 0;	1523	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
876	sigaction (w->signum, &sa, 0);	1524	sigaction (w->signum, &sa, 0);
		1525	#endif
877	}	1526	}
878	}	1527	}
879		1528
880	void	1529	void
881	ev_signal_stop (struct ev_signal *w)	1530	ev_signal_stop (EV_P_ struct ev_signal *w)
882	{	1531	{
883	ev_clear ((W)w);	1532	ev_clear_pending (EV_A_ (W)w);
884	if (!ev_is_active (w))	1533	if (!ev_is_active (w))
885	return;	1534	return;
886		1535
887	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1536	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
888	ev_stop ((W)w);	1537	ev_stop (EV_A_ (W)w);
889		1538
890	if (!signals [w->signum - 1].head)	1539	if (!signals [w->signum - 1].head)
891	signal (w->signum, SIG_DFL);	1540	signal (w->signum, SIG_DFL);
892	}	1541	}
893		1542
894	void	1543	void
895	ev_idle_start (struct ev_idle *w)	1544	ev_child_start (EV_P_ struct ev_child *w)
896	{	1545	{
		1546	#if EV_MULTIPLICITY
		1547	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1548	#endif
897	if (ev_is_active (w))	1549	if (ev_is_active (w))
898	return;	1550	return;
899		1551
900	ev_start ((W)w, ++idlecnt);
901	array_needsize (idles, idlemax, idlecnt, );
902	idles [idlecnt - 1] = w;
903	}
904
905	void
906	ev_idle_stop (struct ev_idle *w)
907	{
908	ev_clear ((W)w);
909	if (ev_is_active (w))
910	return;
911
912	idles [w->active - 1] = idles [--idlecnt];
913	ev_stop ((W)w);
914	}
915
916	void
917	ev_prepare_start (struct ev_prepare *w)
918	{
919	if (ev_is_active (w))
920	return;
921
922	ev_start ((W)w, ++preparecnt);
923	array_needsize (prepares, preparemax, preparecnt, );
924	prepares [preparecnt - 1] = w;
925	}
926
927	void
928	ev_prepare_stop (struct ev_prepare *w)
929	{
930	ev_clear ((W)w);
931	if (ev_is_active (w))
932	return;
933
934	prepares [w->active - 1] = prepares [--preparecnt];
935	ev_stop ((W)w);
936	}
937
938	void
939	ev_check_start (struct ev_check *w)
940	{
941	if (ev_is_active (w))
942	return;
943
944	ev_start ((W)w, ++checkcnt);
945	array_needsize (checks, checkmax, checkcnt, );
946	checks [checkcnt - 1] = w;
947	}
948
949	void
950	ev_check_stop (struct ev_check *w)
951	{
952	ev_clear ((W)w);
953	if (ev_is_active (w))
954	return;
955
956	checks [w->active - 1] = checks [--checkcnt];
957	ev_stop ((W)w);
958	}
959
960	void
961	ev_child_start (struct ev_child *w)
962	{
963	if (ev_is_active (w))
964	return;
965
966	ev_start ((W)w, 1);	1552	ev_start (EV_A_ (W)w, 1);
967	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1553	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
968	}	1554	}
969		1555
970	void	1556	void
971	ev_child_stop (struct ev_child *w)	1557	ev_child_stop (EV_P_ struct ev_child *w)
972	{	1558	{
973	ev_clear ((W)w);	1559	ev_clear_pending (EV_A_ (W)w);
974	if (ev_is_active (w))	1560	if (!ev_is_active (w))
975	return;	1561	return;
976		1562
977	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1563	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
978	ev_stop ((W)w);	1564	ev_stop (EV_A_ (W)w);
979	}	1565	}
980		1566
981	/*****************************************************************************/	1567	/*****************************************************************************/
982		1568
983	struct ev_once	1569	struct ev_once
…		…
987	void (cb)(int revents, void arg);	1573	void (cb)(int revents, void arg);
988	void *arg;	1574	void *arg;
989	};	1575	};
990		1576
991	static void	1577	static void
992	once_cb (struct ev_once *once, int revents)	1578	once_cb (EV_P_ struct ev_once *once, int revents)
993	{	1579	{
994	void (cb)(int revents, void arg) = once->cb;	1580	void (cb)(int revents, void arg) = once->cb;
995	void *arg = once->arg;	1581	void *arg = once->arg;
996		1582
997	ev_io_stop (&once->io);	1583	ev_io_stop (EV_A_ &once->io);
998	ev_timer_stop (&once->to);	1584	ev_timer_stop (EV_A_ &once->to);
999	free (once);	1585	ev_free (once);
1000		1586
1001	cb (revents, arg);	1587	cb (revents, arg);
1002	}	1588	}
1003		1589
1004	static void	1590	static void
1005	once_cb_io (struct ev_io *w, int revents)	1591	once_cb_io (EV_P_ struct ev_io *w, int revents)
1006	{	1592	{
1007	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1593	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1008	}	1594	}
1009		1595
1010	static void	1596	static void
1011	once_cb_to (struct ev_timer *w, int revents)	1597	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1012	{	1598	{
1013	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1599	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1014	}	1600	}
1015		1601
1016	void	1602	void
1017	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1603	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1018	{	1604	{
1019	struct ev_once *once = malloc (sizeof (struct ev_once));	1605	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1020		1606
1021	if (!once)	1607	if (!once)
1022	cb (EV_ERROR, arg);	1608	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1023	else	1609	else
1024	{	1610	{
1025	once->cb = cb;	1611	once->cb = cb;
1026	once->arg = arg;	1612	once->arg = arg;
1027		1613
1028	ev_watcher_init (&once->io, once_cb_io);	1614	ev_init (&once->io, once_cb_io);
1029
1030	if (fd >= 0)	1615	if (fd >= 0)
1031	{	1616	{
1032	ev_io_set (&once->io, fd, events);	1617	ev_io_set (&once->io, fd, events);
1033	ev_io_start (&once->io);	1618	ev_io_start (EV_A_ &once->io);
1034	}	1619	}
1035		1620
1036	ev_watcher_init (&once->to, once_cb_to);	1621	ev_init (&once->to, once_cb_to);
1037
1038	if (timeout >= 0.)	1622	if (timeout >= 0.)
1039	{	1623	{
1040	ev_timer_set (&once->to, timeout, 0.);	1624	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1625	ev_timer_start (EV_A_ &once->to);
1042	}	1626	}
1043	}	1627	}
1044	}	1628	}
1045		1629
1046	/*****************************************************************************/	1630	#ifdef __cplusplus
1047
1048	#if 0
1049
1050	struct ev_io wio;
1051
1052	static void
1053	sin_cb (struct ev_io *w, int revents)
1054	{
1055	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1056	}	1631	}
1057
1058	static void
1059	ocb (struct ev_timer *w, int revents)
1060	{
1061	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1062	ev_timer_stop (w);
1063	ev_timer_start (w);
1064	}
1065
1066	static void
1067	scb (struct ev_signal *w, int revents)
1068	{
1069	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1070	ev_io_stop (&wio);
1071	ev_io_start (&wio);
1072	}
1073
1074	static void
1075	gcb (struct ev_signal *w, int revents)
1076	{
1077	fprintf (stderr, "generic %x\n", revents);
1078
1079	}
1080
1081	int main (void)
1082	{
1083	ev_init (0);
1084
1085	ev_io_init (&wio, sin_cb, 0, EV_READ);
1086	ev_io_start (&wio);
1087
1088	struct ev_timer t[10000];
1089
1090	#if 0
1091	int i;
1092	for (i = 0; i < 10000; ++i)
1093	{
1094	struct ev_timer *w = t + i;
1095	ev_watcher_init (w, ocb, i);
1096	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1097	ev_timer_start (w);
1098	if (drand48 () < 0.5)
1099	ev_timer_stop (w);
1100	}
1101	#endif	1632	#endif
1102		1633
1103	struct ev_timer t1;
1104	ev_timer_init (&t1, ocb, 5, 10);
1105	ev_timer_start (&t1);
1106
1107	struct ev_signal sig;
1108	ev_signal_init (&sig, scb, SIGQUIT);
1109	ev_signal_start (&sig);
1110
1111	struct ev_check cw;
1112	ev_check_init (&cw, gcb);
1113	ev_check_start (&cw);
1114
1115	struct ev_idle iw;
1116	ev_idle_init (&iw, gcb);
1117	ev_idle_start (&iw);
1118
1119	ev_loop (0);
1120
1121	return 0;
1122	}
1123
1124	#endif
1125
1126
1127
1128

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Comparing libev/ev.c (file contents): Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs. Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.98 by root, Sun Nov 11 02:05:20 2007 UTC