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

Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.116 by root, Thu Nov 15 09:19:42 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
30	# include "config.h"	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
31	#endif	64	#endif
32		65
33	#include <math.h>	66	#include <math.h>
34	#include <stdlib.h>	67	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	68	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	69	#include <stddef.h>
39		70
40	#include <stdio.h>	71	#include <stdio.h>
41		72
42	#include <assert.h>	73	#include <assert.h>
43	#include <errno.h>	74	#include <errno.h>
44	#include <sys/types.h>	75	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	76	#include <time.h>
48		77
		78	#include <signal.h>
		79
		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
		89	# endif
		90	#endif
		91
		92	/**/
		93
49	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
52	# endif
53	#endif	96	#endif
54		97
55	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
56	# define EV_USE_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
		108	# endif
57	#endif	109	#endif
58		110
59	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
61	#endif	113	#endif
62		114
		115	#ifndef EV_USE_KQUEUE
		116	# define EV_USE_KQUEUE 0
		117	#endif
		118
		119	#ifndef EV_USE_REALTIME
		120	# define EV_USE_REALTIME 1
		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
63	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
		137	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
65	#endif	139	#endif
66	#ifndef EV_USE_REALTIME	140
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
68	#endif	143	#endif
		144
		145	/**/
69		146
70	#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) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
72	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
73	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
74		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
75	#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 EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
76		174
77	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
80		178
81	static ev_tstamp now, diff; /* monotonic clock */	179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		180
		181	#ifdef _WIN32
		182	# include "ev_win32.c"
		183	#endif
		184
		185	/*****************************************************************************/
		186
		187	static void (syserr_cb)(const char msg);
		188
		189	void ev_set_syserr_cb (void (cb)(const char msg))
		190	{
		191	syserr_cb = cb;
		192	}
		193
		194	static void
		195	syserr (const char *msg)
		196	{
		197	if (!msg)
		198	msg = "(libev) system error";
		199
		200	if (syserr_cb)
		201	syserr_cb (msg);
		202	else
		203	{
		204	perror (msg);
		205	abort ();
		206	}
		207	}
		208
		209	static void (alloc)(void *ptr, long size);
		210
		211	void ev_set_allocator (void (cb)(void *ptr, long size))
		212	{
		213	alloc = cb;
		214	}
		215
		216	static void *
		217	ev_realloc (void *ptr, long size)
		218	{
		219	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		220
		221	if (!ptr && size)
		222	{
		223	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		224	abort ();
		225	}
		226
		227	return ptr;
		228	}
		229
		230	#define ev_malloc(size) ev_realloc (0, (size))
		231	#define ev_free(ptr) ev_realloc ((ptr), 0)
		232
		233	/*****************************************************************************/
		234
		235	typedef struct
		236	{
		237	WL head;
		238	unsigned char events;
		239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
		243	} ANFD;
		244
		245	typedef struct
		246	{
		247	W w;
		248	int events;
		249	} ANPENDING;
		250
		251	#if EV_MULTIPLICITY
		252
		253	struct ev_loop
		254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
		257	#define VAR(name,decl) decl;
		258	#include "ev_vars.h"
		259	#undef VAR
		260	};
		261	#include "ev_wrap.h"
		262
		263	static struct ev_loop default_loop_struct;
		264	struct ev_loop *ev_default_loop_ptr;
		265
		266	#else
		267
82	ev_tstamp ev_now;	268	ev_tstamp ev_rt_now;
83	int ev_method;	269	#define VAR(name,decl) static decl;
		270	#include "ev_vars.h"
		271	#undef VAR
84		272
85	static int have_monotonic; /* runtime */	273	static int ev_default_loop_ptr;
86		274
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	275	#endif
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		276
91	/*****************************************************************************/	277	/*****************************************************************************/
92		278
93	ev_tstamp	279	ev_tstamp
94	ev_time (void)	280	ev_time (void)
…		…
102	gettimeofday (&tv, 0);	288	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	289	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	290	#endif
105	}	291	}
106		292
107	static ev_tstamp	293	inline ev_tstamp
108	get_clock (void)	294	get_clock (void)
109	{	295	{
110	#if EV_USE_MONOTONIC	296	#if EV_USE_MONOTONIC
111	if (have_monotonic)	297	if (expect_true (have_monotonic))
112	{	298	{
113	struct timespec ts;	299	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	300	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	301	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	302	}
117	#endif	303	#endif
118		304
119	return ev_time ();	305	return ev_time ();
120	}	306	}
121		307
		308	#if EV_MULTIPLICITY
		309	ev_tstamp
		310	ev_now (EV_P)
		311	{
		312	return ev_rt_now;
		313	}
		314	#endif
		315
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
123		317
124	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	319	if (expect_false ((cnt) > cur)) \
126	{ \	320	{ \
127	int newcnt = cur; \	321	int newcnt = cur; \
128	do \	322	do \
129	{ \	323	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	325	} \
132	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
133	\	327	\
134	base = realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	330	cur = newcnt; \
137	}	331	}
		332
		333	#define array_slim(type,stem) \
		334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		335	{ \
		336	stem ## max = array_roundsize (stem ## cnt >> 1); \
		337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		339	}
		340
		341	#define array_free(stem, idx) \
		342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		343
139	/*****************************************************************************/	344	/*****************************************************************************/
140
141	typedef struct
142	{
143	struct ev_io *head;
144	int events;
145	} ANFD;
146
147	static ANFD *anfds;
148	static int anfdmax;
149		345
150	static void	346	static void
151	anfds_init (ANFD *base, int count)	347	anfds_init (ANFD *base, int count)
152	{	348	{
153	while (count--)	349	while (count--)
154	{	350	{
155	base->head = 0;	351	base->head = 0;
156	base->events = EV_NONE;	352	base->events = EV_NONE;
		353	base->reify = 0;
		354
157	++base;	355	++base;
158	}	356	}
159	}	357	}
160		358
161	typedef struct	359	void
		360	ev_feed_event (EV_P_ void *w, int revents)
162	{	361	{
163	W w;	362	W w_ = (W)w;
164	int events;
165	} ANPENDING;
166		363
167	static ANPENDING *pendings;	364	if (w_->pending)
168	static int pendingmax, pendingcnt;	365	{
		366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		367	return;
		368	}
169		369
170	static void
171	event (W w, int events)
172	{
173	w->pending = ++pendingcnt;	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
174	array_needsize (pendings, pendingmax, pendingcnt, );	371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
175	pendings [pendingcnt - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
176	pendings [pendingcnt - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
177	}	374	}
178		375
179	static void	376	static void
180	queue_events (W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
181	{	378	{
182	int i;	379	int i;
183		380
184	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
186	}	383	}
187		384
188	static void	385	inline void
189	fd_event (int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
190	{	387	{
191	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	389	struct ev_io *w;
193		390
194	for (w = anfd->head; w; w = w->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
195	{	392	{
196	int ev = w->events & events;	393	int ev = w->events & revents;
197		394
198	if (ev)	395	if (ev)
199	event ((W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
200	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
201	}	404	}
202		405
203	/*****************************************************************************/	406	/*****************************************************************************/
204		407
205	static int *fdchanges;
206	static int fdchangemax, fdchangecnt;
207
208	static void	408	static void
209	fd_reify (void)	409	fd_reify (EV_P)
210	{	410	{
211	int i;	411	int i;
212		412
213	for (i = 0; i < fdchangecnt; ++i)	413	for (i = 0; i < fdchangecnt; ++i)
214	{	414	{
…		…
216	ANFD *anfd = anfds + fd;	416	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	417	struct ev_io *w;
218		418
219	int events = 0;	419	int events = 0;
220		420
221	for (w = anfd->head; w; w = w->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
222	events \|= w->events;	422	events \|= w->events;
223		423
224	anfd->events &= ~EV_REIFY;	424	#if EV_SELECT_IS_WINSOCKET
225		425	if (events)
226	if (anfd->events != events)
227	{	426	{
228	method_modify (fd, anfd->events, events);	427	unsigned long argp;
229	anfd->events = events;	428	anfd->handle = _get_osfhandle (fd);
		429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
230	}	430	}
		431	#endif
		432
		433	anfd->reify = 0;
		434
		435	method_modify (EV_A_ fd, anfd->events, events);
		436	anfd->events = events;
231	}	437	}
232		438
233	fdchangecnt = 0;	439	fdchangecnt = 0;
234	}	440	}
235		441
236	static void	442	static void
237	fd_change (int fd)	443	fd_change (EV_P_ int fd)
238	{	444	{
239	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	445	if (anfds [fd].reify)
240	return;	446	return;
241		447
242	anfds [fd].events \|= EV_REIFY;	448	anfds [fd].reify = 1;
243		449
244	++fdchangecnt;	450	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
246	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
247	}	453	}
248		454
		455	static void
		456	fd_kill (EV_P_ int fd)
		457	{
		458	struct ev_io *w;
		459
		460	while ((w = (struct ev_io *)anfds [fd].head))
		461	{
		462	ev_io_stop (EV_A_ w);
		463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		464	}
		465	}
		466
		467	static int
		468	fd_valid (int fd)
		469	{
		470	#ifdef _WIN32
		471	return _get_osfhandle (fd) != -1;
		472	#else
		473	return fcntl (fd, F_GETFD) != -1;
		474	#endif
		475	}
		476
249	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
250	static void	478	static void
251	fd_recheck (void)	479	fd_ebadf (EV_P)
252	{	480	{
253	int fd;	481	int fd;
254		482
255	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	484	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
258	while (anfds [fd].head)	486	fd_kill (EV_A_ fd);
		487	}
		488
		489	/* called on ENOMEM in select/poll to kill some fds and retry */
		490	static void
		491	fd_enomem (EV_P)
		492	{
		493	int fd;
		494
		495	for (fd = anfdmax; fd--; )
		496	if (anfds [fd].events)
259	{	497	{
260	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	498	fd_kill (EV_A_ fd);
261	ev_io_stop (anfds [fd].head);	499	return;
262	}	500	}
		501	}
		502
		503	/* usually called after fork if method needs to re-arm all fds from scratch */
		504	static void
		505	fd_rearm_all (EV_P)
		506	{
		507	int fd;
		508
		509	/* this should be highly optimised to not do anything but set a flag */
		510	for (fd = 0; fd < anfdmax; ++fd)
		511	if (anfds [fd].events)
		512	{
		513	anfds [fd].events = 0;
		514	fd_change (EV_A_ fd);
		515	}
263	}	516	}
264		517
265	/*****************************************************************************/	518	/*****************************************************************************/
266		519
267	static struct ev_timer **timers;
268	static int timermax, timercnt;
269
270	static struct ev_periodic **periodics;
271	static int periodicmax, periodiccnt;
272
273	static void	520	static void
274	upheap (WT *timers, int k)	521	upheap (WT *heap, int k)
275	{	522	{
276	WT w = timers [k];	523	WT w = heap [k];
277		524
278	while (k && timers [k >> 1]->at > w->at)	525	while (k && heap [k >> 1]->at > w->at)
279	{	526	{
280	timers [k] = timers [k >> 1];	527	heap [k] = heap [k >> 1];
281	timers [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
282	k >>= 1;	529	k >>= 1;
283	}	530	}
284		531
285	timers [k] = w;	532	heap [k] = w;
286	timers [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
287		534
288	}	535	}
289		536
290	static void	537	static void
291	downheap (WT *timers, int N, int k)	538	downheap (WT *heap, int N, int k)
292	{	539	{
293	WT w = timers [k];	540	WT w = heap [k];
294		541
295	while (k < (N >> 1))	542	while (k < (N >> 1))
296	{	543	{
297	int j = k << 1;	544	int j = k << 1;
298		545
299	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	546	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
300	++j;	547	++j;
301		548
302	if (w->at <= timers [j]->at)	549	if (w->at <= heap [j]->at)
303	break;	550	break;
304		551
305	timers [k] = timers [j];	552	heap [k] = heap [j];
306	timers [k]->active = k + 1;	553	((W)heap [k])->active = k + 1;
307	k = j;	554	k = j;
308	}	555	}
309		556
310	timers [k] = w;	557	heap [k] = w;
311	timers [k]->active = k + 1;	558	((W)heap [k])->active = k + 1;
		559	}
		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
312	}	566	}
313		567
314	/*****************************************************************************/	568	/*****************************************************************************/
315		569
316	typedef struct	570	typedef struct
317	{	571	{
318	struct ev_signal *head;	572	WL head;
319	sig_atomic_t gotsig;	573	sig_atomic_t volatile gotsig;
320	} ANSIG;	574	} ANSIG;
321		575
322	static ANSIG *signals;	576	static ANSIG *signals;
323	static int signalmax;	577	static int signalmax;
324		578
325	static int sigpipe [2];	579	static int sigpipe [2];
326	static sig_atomic_t gotsig;	580	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;	581	static struct ev_io sigev;
328		582
329	static void	583	static void
330	signals_init (ANSIG *base, int count)	584	signals_init (ANSIG *base, int count)
331	{	585	{
332	while (count--)	586	while (count--)
333	{	587	{
334	base->head = 0;	588	base->head = 0;
335	base->gotsig = 0;	589	base->gotsig = 0;
		590
336	++base;	591	++base;
337	}	592	}
338	}	593	}
339		594
340	static void	595	static void
341	sighandler (int signum)	596	sighandler (int signum)
342	{	597	{
		598	#if _WIN32
		599	signal (signum, sighandler);
		600	#endif
		601
343	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
344		603
345	if (!gotsig)	604	if (!gotsig)
346	{	605	{
		606	int old_errno = errno;
347	gotsig = 1;	607	gotsig = 1;
348	write (sigpipe [1], &gotsig, 1);	608	write (sigpipe [1], &signum, 1);
		609	errno = old_errno;
349	}	610	}
350	}	611	}
351		612
		613	void
		614	ev_feed_signal_event (EV_P_ int signum)
		615	{
		616	WL w;
		617
		618	#if EV_MULTIPLICITY
		619	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		620	#endif
		621
		622	--signum;
		623
		624	if (signum < 0 \|\| signum >= signalmax)
		625	return;
		626
		627	signals [signum].gotsig = 0;
		628
		629	for (w = signals [signum].head; w; w = w->next)
		630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		631	}
		632
352	static void	633	static void
353	sigcb (struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
354	{	635	{
355	struct ev_signal *w;
356	int sig;	636	int signum;
357		637
		638	read (sigpipe [0], &revents, 1);
358	gotsig = 0;	639	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		640
361	for (sig = signalmax; sig--; )	641	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	642	if (signals [signum].gotsig)
363	{	643	ev_feed_signal_event (EV_A_ signum + 1);
364	signals [sig].gotsig = 0;
365
366	for (w = signals [sig].head; w; w = w->next)
367	event ((W)w, EV_SIGNAL);
368	}
369	}	644	}
370		645
371	static void	646	inline void
372	siginit (void)	647	fd_intern (int fd)
373	{	648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	653	fcntl (fd, F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376
377	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	654	fcntl (fd, F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	655	#endif
		656	}
		657
		658	static void
		659	siginit (EV_P)
		660	{
		661	fd_intern (sigpipe [0]);
		662	fd_intern (sigpipe [1]);
380		663
381	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);	665	ev_io_start (EV_A_ &sigev);
		666	ev_unref (EV_A); /* child watcher should not keep loop alive */
383	}	667	}
384		668
385	/*****************************************************************************/	669	/*****************************************************************************/
386		670
387	static struct ev_idle **idles;
388	static int idlemax, idlecnt;
389
390	static struct ev_prepare **prepares;
391	static int preparemax, preparecnt;
392
393	static struct ev_check **checks;
394	static int checkmax, checkcnt;
395
396	/*****************************************************************************/
397
398	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
399	static struct ev_signal childev;	675	static struct ev_signal childev;
400		676
401	#ifndef WCONTINUED	677	#ifndef WCONTINUED
402	# define WCONTINUED 0	678	# define WCONTINUED 0
403	#endif	679	#endif
404		680
405	static void	681	static void
406	childcb (struct ev_signal *sw, int revents)	682	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
407	{	683	{
408	struct ev_child *w;	684	struct ev_child *w;
		685
		686	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		687	if (w->pid == pid \|\| !w->pid)
		688	{
		689	ev_priority (w) = ev_priority (sw); /* need to do it now */
		690	w->rpid = pid;
		691	w->rstatus = status;
		692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		693	}
		694	}
		695
		696	static void
		697	childcb (EV_P_ struct ev_signal *sw, int revents)
		698	{
409	int pid, status;	699	int pid, status;
410		700
411	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	702	{
413	if (w->pid == pid \|\| w->pid == -1)	703	/* make sure we are called again until all childs have been reaped */
414	{	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
415	w->status = status;	705
416	event ((W)w, EV_CHILD);	706	child_reap (EV_A_ sw, pid, pid, status);
417	}	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		708	}
418	}	709	}
		710
		711	#endif
419		712
420	/*****************************************************************************/	713	/*****************************************************************************/
421		714
		715	#if EV_USE_KQUEUE
		716	# include "ev_kqueue.c"
		717	#endif
422	#if EV_USE_EPOLL	718	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	719	# include "ev_epoll.c"
424	#endif	720	#endif
		721	#if EV_USE_POLL
		722	# include "ev_poll.c"
		723	#endif
425	#if EV_USE_SELECT	724	#if EV_USE_SELECT
426	# include "ev_select.c"	725	# include "ev_select.c"
427	#endif	726	#endif
428		727
429	int	728	int
…		…
436	ev_version_minor (void)	735	ev_version_minor (void)
437	{	736	{
438	return EV_VERSION_MINOR;	737	return EV_VERSION_MINOR;
439	}	738	}
440		739
441	int ev_init (int flags)	740	/* return true if we are running with elevated privileges and should ignore env variables */
		741	static int
		742	enable_secure (void)
442	{	743	{
		744	#ifdef _WIN32
		745	return 0;
		746	#else
		747	return getuid () != geteuid ()
		748	\|\| getgid () != getegid ();
		749	#endif
		750	}
		751
		752	unsigned int
		753	ev_method (EV_P)
		754	{
		755	return method;
		756	}
		757
		758	static void
		759	loop_init (EV_P_ unsigned int flags)
		760	{
443	if (!ev_method)	761	if (!method)
444	{	762	{
445	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
446	{	764	{
447	struct timespec ts;	765	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	767	have_monotonic = 1;
450	}	768	}
451	#endif	769	#endif
452		770
453	ev_now = ev_time ();	771	ev_rt_now = ev_time ();
454	now = get_clock ();	772	mn_now = get_clock ();
		773	now_floor = mn_now;
455	diff = ev_now - now;	774	rtmn_diff = ev_rt_now - mn_now;
456		775
457	if (pipe (sigpipe))	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
458	return 0;	777	flags = atoi (getenv ("LIBEV_FLAGS"));
459		778
460	ev_method = EVMETHOD_NONE;	779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
		781
		782	method = 0;
		783	#if EV_USE_KQUEUE
		784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		785	#endif
461	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
462	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		788	#endif
		789	#if EV_USE_POLL
		790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
463	#endif	791	#endif
464	#if EV_USE_SELECT	792	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
466	#endif	794	#endif
467		795
		796	ev_init (&sigev, sigcb);
		797	ev_set_priority (&sigev, EV_MAXPRI);
		798	}
		799	}
		800
		801	void
		802	loop_destroy (EV_P)
		803	{
		804	int i;
		805
		806	#if EV_USE_KQUEUE
		807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		808	#endif
		809	#if EV_USE_EPOLL
		810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		811	#endif
		812	#if EV_USE_POLL
		813	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		814	#endif
		815	#if EV_USE_SELECT
		816	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		817	#endif
		818
		819	for (i = NUMPRI; i--; )
		820	array_free (pending, [i]);
		821
		822	/* have to use the microsoft-never-gets-it-right macro */
		823	array_free (fdchange, EMPTY0);
		824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
		826	array_free (periodic, EMPTY0);
		827	#endif
		828	array_free (idle, EMPTY0);
		829	array_free (prepare, EMPTY0);
		830	array_free (check, EMPTY0);
		831
		832	method = 0;
		833	}
		834
		835	static void
		836	loop_fork (EV_P)
		837	{
		838	#if EV_USE_EPOLL
		839	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		840	#endif
		841	#if EV_USE_KQUEUE
		842	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		843	#endif
		844
		845	if (ev_is_active (&sigev))
		846	{
		847	/* default loop */
		848
		849	ev_ref (EV_A);
		850	ev_io_stop (EV_A_ &sigev);
		851	close (sigpipe [0]);
		852	close (sigpipe [1]);
		853
		854	while (pipe (sigpipe))
		855	syserr ("(libev) error creating pipe");
		856
		857	siginit (EV_A);
		858	}
		859
		860	postfork = 0;
		861	}
		862
		863	#if EV_MULTIPLICITY
		864	struct ev_loop *
		865	ev_loop_new (unsigned int flags)
		866	{
		867	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		868
		869	memset (loop, 0, sizeof (struct ev_loop));
		870
		871	loop_init (EV_A_ flags);
		872
		873	if (ev_method (EV_A))
		874	return loop;
		875
		876	return 0;
		877	}
		878
		879	void
		880	ev_loop_destroy (EV_P)
		881	{
		882	loop_destroy (EV_A);
		883	ev_free (loop);
		884	}
		885
		886	void
		887	ev_loop_fork (EV_P)
		888	{
		889	postfork = 1;
		890	}
		891
		892	#endif
		893
		894	#if EV_MULTIPLICITY
		895	struct ev_loop *
		896	ev_default_loop_ (unsigned int flags)
		897	#else
		898	int
		899	ev_default_loop (unsigned int flags)
		900	#endif
		901	{
		902	if (sigpipe [0] == sigpipe [1])
		903	if (pipe (sigpipe))
		904	return 0;
		905
		906	if (!ev_default_loop_ptr)
		907	{
		908	#if EV_MULTIPLICITY
		909	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		910	#else
		911	ev_default_default_loop_ptr = 1;
		912	#endif
		913
		914	loop_init (EV_A_ flags);
		915
468	if (ev_method)	916	if (ev_method (EV_A))
469	{	917	{
470	ev_watcher_init (&sigev, sigcb);
471	siginit ();	918	siginit (EV_A);
472		919
		920	#ifndef _WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	921	ev_signal_init (&childev, childcb, SIGCHLD);
		922	ev_set_priority (&childev, EV_MAXPRI);
474	ev_signal_start (&childev);	923	ev_signal_start (EV_A_ &childev);
		924	ev_unref (EV_A); /* child watcher should not keep loop alive */
		925	#endif
475	}	926	}
		927	else
		928	ev_default_loop_ptr = 0;
476	}	929	}
477		930
478	return ev_method;	931	return ev_default_loop_ptr;
		932	}
		933
		934	void
		935	ev_default_destroy (void)
		936	{
		937	#if EV_MULTIPLICITY
		938	struct ev_loop *loop = ev_default_loop_ptr;
		939	#endif
		940
		941	#ifndef _WIN32
		942	ev_ref (EV_A); /* child watcher */
		943	ev_signal_stop (EV_A_ &childev);
		944	#endif
		945
		946	ev_ref (EV_A); /* signal watcher */
		947	ev_io_stop (EV_A_ &sigev);
		948
		949	close (sigpipe [0]); sigpipe [0] = 0;
		950	close (sigpipe [1]); sigpipe [1] = 0;
		951
		952	loop_destroy (EV_A);
		953	}
		954
		955	void
		956	ev_default_fork (void)
		957	{
		958	#if EV_MULTIPLICITY
		959	struct ev_loop *loop = ev_default_loop_ptr;
		960	#endif
		961
		962	if (method)
		963	postfork = 1;
479	}	964	}
480		965
481	/*****************************************************************************/	966	/*****************************************************************************/
482		967
483	void
484	ev_prefork (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_parent (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_child (void)
497	{
498	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();
501	#endif
502
503	ev_io_stop (&sigev);
504	close (sigpipe [0]);
505	close (sigpipe [1]);
506	pipe (sigpipe);
507	siginit ();
508	}
509
510	/*****************************************************************************/
511
512	static void	968	static int
		969	any_pending (EV_P)
		970	{
		971	int pri;
		972
		973	for (pri = NUMPRI; pri--; )
		974	if (pendingcnt [pri])
		975	return 1;
		976
		977	return 0;
		978	}
		979
		980	static void
513	call_pending (void)	981	call_pending (EV_P)
514	{	982	{
		983	int pri;
		984
		985	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	986	while (pendingcnt [pri])
516	{	987	{
517	ANPENDING *p = pendings + --pendingcnt;	988	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		989
519	if (p->w)	990	if (p->w)
520	{	991	{
521	p->w->pending = 0;	992	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	993	EV_CB_INVOKE (p->w, p->events);
523	}	994	}
524	}	995	}
525	}	996	}
526		997
527	static void	998	static void
528	timers_reify (void)	999	timers_reify (EV_P)
529	{	1000	{
530	while (timercnt && timers [0]->at <= now)	1001	while (timercnt && ((WT)timers [0])->at <= mn_now)
531	{	1002	{
532	struct ev_timer *w = timers [0];	1003	struct ev_timer *w = timers [0];
		1004
		1005	assert (("inactive timer on timer heap detected", ev_is_active (w)));
533		1006
534	/* first reschedule or stop timer */	1007	/* first reschedule or stop timer */
535	if (w->repeat)	1008	if (w->repeat)
536	{	1009	{
		1010	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1011
537	w->at = now + w->repeat;	1012	((WT)w)->at += w->repeat;
538	assert (("timer timeout in the past, negative repeat?", w->at > now));	1013	if (((WT)w)->at < mn_now)
		1014	((WT)w)->at = mn_now;
		1015
539	downheap ((WT *)timers, timercnt, 0);	1016	downheap ((WT *)timers, timercnt, 0);
540	}	1017	}
541	else	1018	else
542	ev_timer_stop (w); /* nonrepeating: stop timer */	1019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
543		1020
544	event ((W)w, EV_TIMEOUT);	1021	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
545	}	1022	}
546	}	1023	}
547		1024
		1025	#if EV_PERIODICS
548	static void	1026	static void
549	periodics_reify (void)	1027	periodics_reify (EV_P)
550	{	1028	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	1029	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
552	{	1030	{
553	struct ev_periodic *w = periodics [0];	1031	struct ev_periodic *w = periodics [0];
554		1032
		1033	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1034
555	/* first reschedule or stop timer */	1035	/* first reschedule or stop timer */
556	if (w->interval)	1036	if (w->reschedule_cb)
557	{	1037	{
		1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1039	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1040	downheap ((WT *)periodics, periodiccnt, 0);
		1041	}
		1042	else if (w->interval)
		1043	{
558	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1044	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
559	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1045	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
560	downheap ((WT *)periodics, periodiccnt, 0);	1046	downheap ((WT *)periodics, periodiccnt, 0);
561	}	1047	}
562	else	1048	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	1049	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		1050
565	event ((W)w, EV_TIMEOUT);	1051	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
566	}	1052	}
567	}	1053	}
568		1054
569	static void	1055	static void
570	periodics_reschedule (ev_tstamp diff)	1056	periodics_reschedule (EV_P)
571	{	1057	{
572	int i;	1058	int i;
573		1059
574	/* adjust periodics after time jump */	1060	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	1061	for (i = 0; i < periodiccnt; ++i)
576	{	1062	{
577	struct ev_periodic *w = periodics [i];	1063	struct ev_periodic *w = periodics [i];
578		1064
		1065	if (w->reschedule_cb)
		1066	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
579	if (w->interval)	1067	else if (w->interval)
		1068	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1069	}
		1070
		1071	/* now rebuild the heap */
		1072	for (i = periodiccnt >> 1; i--; )
		1073	downheap ((WT *)periodics, periodiccnt, i);
		1074	}
		1075	#endif
		1076
		1077	inline int
		1078	time_update_monotonic (EV_P)
		1079	{
		1080	mn_now = get_clock ();
		1081
		1082	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1083	{
		1084	ev_rt_now = rtmn_diff + mn_now;
		1085	return 0;
		1086	}
		1087	else
		1088	{
		1089	now_floor = mn_now;
		1090	ev_rt_now = ev_time ();
		1091	return 1;
		1092	}
		1093	}
		1094
		1095	static void
		1096	time_update (EV_P)
		1097	{
		1098	int i;
		1099
		1100	#if EV_USE_MONOTONIC
		1101	if (expect_true (have_monotonic))
		1102	{
		1103	if (time_update_monotonic (EV_A))
580	{	1104	{
581	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1105	ev_tstamp odiff = rtmn_diff;
582		1106
583	if (fabs (diff) >= 1e-4)	1107	for (i = 4; --i; ) /* loop a few times, before making important decisions */
584	{	1108	{
585	ev_periodic_stop (w);	1109	rtmn_diff = ev_rt_now - mn_now;
586	ev_periodic_start (w);
587		1110
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1111	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1112	return; /* all is well */
		1113
		1114	ev_rt_now = ev_time ();
		1115	mn_now = get_clock ();
		1116	now_floor = mn_now;
589	}	1117	}
		1118
		1119	# if EV_PERIODICS
		1120	periodics_reschedule (EV_A);
		1121	# endif
		1122	/* no timer adjustment, as the monotonic clock doesn't jump */
		1123	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
590	}	1124	}
591	}	1125	}
592	}	1126	else
593		1127	#endif
594	static void	1128	{
595	time_update (void)
596	{
597	int i;
598
599	ev_now = ev_time ();	1129	ev_rt_now = ev_time ();
600		1130
601	if (have_monotonic)	1131	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
602	{
603	ev_tstamp odiff = diff;
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	1132	{
607	now = get_clock ();	1133	#if EV_PERIODICS
608	diff = ev_now - now;
609
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)
611	return; /* all is well */
612
613	ev_now = ev_time ();
614	}
615
616	periodics_reschedule (diff - odiff);
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}
619	else
620	{
621	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
622	{
623	periodics_reschedule (ev_now - now);	1134	periodics_reschedule (EV_A);
		1135	#endif
624		1136
625	/* adjust timers. this is easy, as the offset is the same for all */	1137	/* adjust timers. this is easy, as the offset is the same for all */
626	for (i = 0; i < timercnt; ++i)	1138	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;	1139	((WT)timers [i])->at += ev_rt_now - mn_now;
628	}	1140	}
629		1141
630	now = ev_now;	1142	mn_now = ev_rt_now;
631	}	1143	}
632	}	1144	}
633		1145
634	int ev_loop_done;	1146	void
		1147	ev_ref (EV_P)
		1148	{
		1149	++activecnt;
		1150	}
635		1151
		1152	void
		1153	ev_unref (EV_P)
		1154	{
		1155	--activecnt;
		1156	}
		1157
		1158	static int loop_done;
		1159
		1160	void
636	void ev_loop (int flags)	1161	ev_loop (EV_P_ int flags)
637	{	1162	{
638	double block;	1163	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1164	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
640		1165
641	do	1166	while (activecnt)
642	{	1167	{
643	/* queue check watchers (and execute them) */	1168	/* queue check watchers (and execute them) */
644	if (preparecnt)	1169	if (expect_false (preparecnt))
645	{	1170	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1171	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();	1172	call_pending (EV_A);
648	}	1173	}
649		1174
		1175	/* we might have forked, so reify kernel state if necessary */
		1176	if (expect_false (postfork))
		1177	loop_fork (EV_A);
		1178
650	/* update fd-related kernel structures */	1179	/* update fd-related kernel structures */
651	fd_reify ();	1180	fd_reify (EV_A);
652		1181
653	/* calculate blocking time */	1182	/* calculate blocking time */
654		1183
655	/* we only need this for !monotonic clockor timers, but as we basically	1184	/* we only need this for !monotonic clock or timers, but as we basically
656	always have timers, we just calculate it always */	1185	always have timers, we just calculate it always */
		1186	#if EV_USE_MONOTONIC
		1187	if (expect_true (have_monotonic))
		1188	time_update_monotonic (EV_A);
		1189	else
		1190	#endif
		1191	{
657	ev_now = ev_time ();	1192	ev_rt_now = ev_time ();
		1193	mn_now = ev_rt_now;
		1194	}
658		1195
659	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1196	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
660	block = 0.;	1197	block = 0.;
661	else	1198	else
662	{	1199	{
663	block = MAX_BLOCKTIME;	1200	block = MAX_BLOCKTIME;
664		1201
665	if (timercnt)	1202	if (timercnt)
666	{	1203	{
667	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1204	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
668	if (block > to) block = to;	1205	if (block > to) block = to;
669	}	1206	}
670		1207
		1208	#if EV_PERIODICS
671	if (periodiccnt)	1209	if (periodiccnt)
672	{	1210	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1211	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
674	if (block > to) block = to;	1212	if (block > to) block = to;
675	}	1213	}
		1214	#endif
676		1215
677	if (block < 0.) block = 0.;	1216	if (block < 0.) block = 0.;
678	}	1217	}
679		1218
680	method_poll (block);	1219	method_poll (EV_A_ block);
681		1220
682	/* update ev_now, do magic */	1221	/* update ev_rt_now, do magic */
683	time_update ();	1222	time_update (EV_A);
684		1223
685	/* queue pending timers and reschedule them */	1224	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	1225	timers_reify (EV_A); /* relative timers called last */
		1226	#if EV_PERIODICS
687	periodics_reify (); /* absolute timers called first */	1227	periodics_reify (EV_A); /* absolute timers called first */
		1228	#endif
688		1229
689	/* queue idle watchers unless io or timers are pending */	1230	/* queue idle watchers unless io or timers are pending */
690	if (!pendingcnt)	1231	if (idlecnt && !any_pending (EV_A))
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	1232	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		1233
693	/* queue check watchers, to be executed first */	1234	/* queue check watchers, to be executed first */
694	if (checkcnt)	1235	if (checkcnt)
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	1236	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		1237
697	call_pending ();	1238	call_pending (EV_A);
698	}
699	while (!ev_loop_done);
700		1239
		1240	if (loop_done)
		1241	break;
		1242	}
		1243
701	if (ev_loop_done != 2)	1244	if (loop_done != 2)
702	ev_loop_done = 0;	1245	loop_done = 0;
		1246	}
		1247
		1248	void
		1249	ev_unloop (EV_P_ int how)
		1250	{
		1251	loop_done = how;
703	}	1252	}
704		1253
705	/*****************************************************************************/	1254	/*****************************************************************************/
706		1255
707	static void	1256	inline void
708	wlist_add (WL *head, WL elem)	1257	wlist_add (WL *head, WL elem)
709	{	1258	{
710	elem->next = *head;	1259	elem->next = *head;
711	*head = elem;	1260	*head = elem;
712	}	1261	}
713		1262
714	static void	1263	inline void
715	wlist_del (WL *head, WL elem)	1264	wlist_del (WL *head, WL elem)
716	{	1265	{
717	while (*head)	1266	while (*head)
718	{	1267	{
719	if (*head == elem)	1268	if (*head == elem)
…		…
724		1273
725	head = &(*head)->next;	1274	head = &(*head)->next;
726	}	1275	}
727	}	1276	}
728		1277
729	static void	1278	inline void
730	ev_clear (W w)	1279	ev_clear_pending (EV_P_ W w)
731	{	1280	{
732	if (w->pending)	1281	if (w->pending)
733	{	1282	{
734	pendings [w->pending - 1].w = 0;	1283	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	1284	w->pending = 0;
736	}	1285	}
737	}	1286	}
738		1287
739	static void	1288	inline void
740	ev_start (W w, int active)	1289	ev_start (EV_P_ W w, int active)
741	{	1290	{
		1291	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1292	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1293
742	w->active = active;	1294	w->active = active;
		1295	ev_ref (EV_A);
743	}	1296	}
744		1297
745	static void	1298	inline void
746	ev_stop (W w)	1299	ev_stop (EV_P_ W w)
747	{	1300	{
		1301	ev_unref (EV_A);
748	w->active = 0;	1302	w->active = 0;
749	}	1303	}
750		1304
751	/*****************************************************************************/	1305	/*****************************************************************************/
752		1306
753	void	1307	void
754	ev_io_start (struct ev_io *w)	1308	ev_io_start (EV_P_ struct ev_io *w)
755	{	1309	{
		1310	int fd = w->fd;
		1311
756	if (ev_is_active (w))	1312	if (ev_is_active (w))
757	return;	1313	return;
758		1314
759	int fd = w->fd;	1315	assert (("ev_io_start called with negative fd", fd >= 0));
760		1316
761	ev_start ((W)w, 1);	1317	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1318	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1319	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		1320
765	fd_change (fd);	1321	fd_change (EV_A_ fd);
766	}	1322	}
767		1323
768	void	1324	void
769	ev_io_stop (struct ev_io *w)	1325	ev_io_stop (EV_P_ struct ev_io *w)
770	{	1326	{
771	ev_clear ((W)w);	1327	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
773	return;	1329	return;
774		1330
		1331	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1332
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1333	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	1334	ev_stop (EV_A_ (W)w);
777		1335
778	fd_change (w->fd);	1336	fd_change (EV_A_ w->fd);
779	}	1337	}
780		1338
781	void	1339	void
782	ev_timer_start (struct ev_timer *w)	1340	ev_timer_start (EV_P_ struct ev_timer *w)
783	{	1341	{
784	if (ev_is_active (w))	1342	if (ev_is_active (w))
785	return;	1343	return;
786		1344
787	w->at += now;	1345	((WT)w)->at += mn_now;
788		1346
789	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1347	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
790		1348
791	ev_start ((W)w, ++timercnt);	1349	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	1350	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
793	timers [timercnt - 1] = w;	1351	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	1352	upheap ((WT *)timers, timercnt - 1);
795	}
796		1353
		1354	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1355	}
		1356
797	void	1357	void
798	ev_timer_stop (struct ev_timer *w)	1358	ev_timer_stop (EV_P_ struct ev_timer *w)
799	{	1359	{
800	ev_clear ((W)w);	1360	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1361	if (!ev_is_active (w))
802	return;	1362	return;
803		1363
		1364	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1365
804	if (w->active < timercnt--)	1366	if (((W)w)->active < timercnt--)
805	{	1367	{
806	timers [w->active - 1] = timers [timercnt];	1368	timers [((W)w)->active - 1] = timers [timercnt];
807	downheap ((WT *)timers, timercnt, w->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
808	}	1370	}
809		1371
810	w->at = w->repeat;	1372	((WT)w)->at -= mn_now;
811		1373
812	ev_stop ((W)w);	1374	ev_stop (EV_A_ (W)w);
813	}	1375	}
814		1376
815	void	1377	void
816	ev_timer_again (struct ev_timer *w)	1378	ev_timer_again (EV_P_ struct ev_timer *w)
817	{	1379	{
818	if (ev_is_active (w))	1380	if (ev_is_active (w))
819	{	1381	{
820	if (w->repeat)	1382	if (w->repeat)
821	{	1383	{
822	w->at = now + w->repeat;	1384	((WT)w)->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1385	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
824	}	1386	}
825	else	1387	else
826	ev_timer_stop (w);	1388	ev_timer_stop (EV_A_ w);
827	}	1389	}
828	else if (w->repeat)	1390	else if (w->repeat)
		1391	{
		1392	w->at = w->repeat;
829	ev_timer_start (w);	1393	ev_timer_start (EV_A_ w);
		1394	}
830	}	1395	}
831		1396
		1397	#if EV_PERIODICS
832	void	1398	void
833	ev_periodic_start (struct ev_periodic *w)	1399	ev_periodic_start (EV_P_ struct ev_periodic *w)
834	{	1400	{
835	if (ev_is_active (w))	1401	if (ev_is_active (w))
836	return;	1402	return;
837		1403
838	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1404	if (w->reschedule_cb)
839		1405	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1406	else if (w->interval)
		1407	{
		1408	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
840	/* this formula differs from the one in periodic_reify because we do not always round up */	1409	/* this formula differs from the one in periodic_reify because we do not always round up */
841	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1410	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1411	}
843		1412
844	ev_start ((W)w, ++periodiccnt);	1413	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1414	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
846	periodics [periodiccnt - 1] = w;	1415	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1416	upheap ((WT *)periodics, periodiccnt - 1);
848	}
849		1417
		1418	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1419	}
		1420
850	void	1421	void
851	ev_periodic_stop (struct ev_periodic *w)	1422	ev_periodic_stop (EV_P_ struct ev_periodic *w)
852	{	1423	{
853	ev_clear ((W)w);	1424	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1425	if (!ev_is_active (w))
855	return;	1426	return;
856		1427
		1428	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1429
857	if (w->active < periodiccnt--)	1430	if (((W)w)->active < periodiccnt--)
858	{	1431	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1432	periodics [((W)w)->active - 1] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1433	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
861	}	1434	}
862		1435
863	ev_stop ((W)w);	1436	ev_stop (EV_A_ (W)w);
864	}	1437	}
865		1438
866	void	1439	void
		1440	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1441	{
		1442	/* TODO: use adjustheap and recalculation */
		1443	ev_periodic_stop (EV_A_ w);
		1444	ev_periodic_start (EV_A_ w);
		1445	}
		1446	#endif
		1447
		1448	void
867	ev_signal_start (struct ev_signal *w)	1449	ev_idle_start (EV_P_ struct ev_idle *w)
868	{	1450	{
869	if (ev_is_active (w))	1451	if (ev_is_active (w))
870	return;	1452	return;
871		1453
		1454	ev_start (EV_A_ (W)w, ++idlecnt);
		1455	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1456	idles [idlecnt - 1] = w;
		1457	}
		1458
		1459	void
		1460	ev_idle_stop (EV_P_ struct ev_idle *w)
		1461	{
		1462	ev_clear_pending (EV_A_ (W)w);
		1463	if (!ev_is_active (w))
		1464	return;
		1465
		1466	idles [((W)w)->active - 1] = idles [--idlecnt];
		1467	ev_stop (EV_A_ (W)w);
		1468	}
		1469
		1470	void
		1471	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1472	{
		1473	if (ev_is_active (w))
		1474	return;
		1475
		1476	ev_start (EV_A_ (W)w, ++preparecnt);
		1477	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1478	prepares [preparecnt - 1] = w;
		1479	}
		1480
		1481	void
		1482	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1483	{
		1484	ev_clear_pending (EV_A_ (W)w);
		1485	if (!ev_is_active (w))
		1486	return;
		1487
		1488	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1489	ev_stop (EV_A_ (W)w);
		1490	}
		1491
		1492	void
		1493	ev_check_start (EV_P_ struct ev_check *w)
		1494	{
		1495	if (ev_is_active (w))
		1496	return;
		1497
		1498	ev_start (EV_A_ (W)w, ++checkcnt);
		1499	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1500	checks [checkcnt - 1] = w;
		1501	}
		1502
		1503	void
		1504	ev_check_stop (EV_P_ struct ev_check *w)
		1505	{
		1506	ev_clear_pending (EV_A_ (W)w);
		1507	if (!ev_is_active (w))
		1508	return;
		1509
		1510	checks [((W)w)->active - 1] = checks [--checkcnt];
		1511	ev_stop (EV_A_ (W)w);
		1512	}
		1513
		1514	#ifndef SA_RESTART
		1515	# define SA_RESTART 0
		1516	#endif
		1517
		1518	void
		1519	ev_signal_start (EV_P_ struct ev_signal *w)
		1520	{
		1521	#if EV_MULTIPLICITY
		1522	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1523	#endif
		1524	if (ev_is_active (w))
		1525	return;
		1526
		1527	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1528
872	ev_start ((W)w, 1);	1529	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1530	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1531	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1532
876	if (!w->next)	1533	if (!((WL)w)->next)
877	{	1534	{
		1535	#if _WIN32
		1536	signal (w->signum, sighandler);
		1537	#else
878	struct sigaction sa;	1538	struct sigaction sa;
879	sa.sa_handler = sighandler;	1539	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1540	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1541	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1542	sigaction (w->signum, &sa, 0);
		1543	#endif
883	}	1544	}
884	}	1545	}
885		1546
886	void	1547	void
887	ev_signal_stop (struct ev_signal *w)	1548	ev_signal_stop (EV_P_ struct ev_signal *w)
888	{	1549	{
889	ev_clear ((W)w);	1550	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1551	if (!ev_is_active (w))
891	return;	1552	return;
892		1553
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1554	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1555	ev_stop (EV_A_ (W)w);
895		1556
896	if (!signals [w->signum - 1].head)	1557	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1558	signal (w->signum, SIG_DFL);
898	}	1559	}
899		1560
900	void	1561	void
901	ev_idle_start (struct ev_idle *w)	1562	ev_child_start (EV_P_ struct ev_child *w)
902	{	1563	{
		1564	#if EV_MULTIPLICITY
		1565	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1566	#endif
903	if (ev_is_active (w))	1567	if (ev_is_active (w))
904	return;	1568	return;
905		1569
906	ev_start ((W)w, ++idlecnt);
907	array_needsize (idles, idlemax, idlecnt, );
908	idles [idlecnt - 1] = w;
909	}
910
911	void
912	ev_idle_stop (struct ev_idle *w)
913	{
914	ev_clear ((W)w);
915	if (ev_is_active (w))
916	return;
917
918	idles [w->active - 1] = idles [--idlecnt];
919	ev_stop ((W)w);
920	}
921
922	void
923	ev_prepare_start (struct ev_prepare *w)
924	{
925	if (ev_is_active (w))
926	return;
927
928	ev_start ((W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );
930	prepares [preparecnt - 1] = w;
931	}
932
933	void
934	ev_prepare_stop (struct ev_prepare *w)
935	{
936	ev_clear ((W)w);
937	if (ev_is_active (w))
938	return;
939
940	prepares [w->active - 1] = prepares [--preparecnt];
941	ev_stop ((W)w);
942	}
943
944	void
945	ev_check_start (struct ev_check *w)
946	{
947	if (ev_is_active (w))
948	return;
949
950	ev_start ((W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );
952	checks [checkcnt - 1] = w;
953	}
954
955	void
956	ev_check_stop (struct ev_check *w)
957	{
958	ev_clear ((W)w);
959	if (ev_is_active (w))
960	return;
961
962	checks [w->active - 1] = checks [--checkcnt];
963	ev_stop ((W)w);
964	}
965
966	void
967	ev_child_start (struct ev_child *w)
968	{
969	if (ev_is_active (w))
970	return;
971
972	ev_start ((W)w, 1);	1570	ev_start (EV_A_ (W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1571	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}	1572	}
975		1573
976	void	1574	void
977	ev_child_stop (struct ev_child *w)	1575	ev_child_stop (EV_P_ struct ev_child *w)
978	{	1576	{
979	ev_clear ((W)w);	1577	ev_clear_pending (EV_A_ (W)w);
980	if (ev_is_active (w))	1578	if (!ev_is_active (w))
981	return;	1579	return;
982		1580
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1581	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
984	ev_stop ((W)w);	1582	ev_stop (EV_A_ (W)w);
985	}	1583	}
986		1584
987	/*****************************************************************************/	1585	/*****************************************************************************/
988		1586
989	struct ev_once	1587	struct ev_once
…		…
993	void (cb)(int revents, void arg);	1591	void (cb)(int revents, void arg);
994	void *arg;	1592	void *arg;
995	};	1593	};
996		1594
997	static void	1595	static void
998	once_cb (struct ev_once *once, int revents)	1596	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	1597	{
1000	void (cb)(int revents, void arg) = once->cb;	1598	void (cb)(int revents, void arg) = once->cb;
1001	void *arg = once->arg;	1599	void *arg = once->arg;
1002		1600
1003	ev_io_stop (&once->io);	1601	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	1602	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	1603	ev_free (once);
1006		1604
1007	cb (revents, arg);	1605	cb (revents, arg);
1008	}	1606	}
1009		1607
1010	static void	1608	static void
1011	once_cb_io (struct ev_io *w, int revents)	1609	once_cb_io (EV_P_ struct ev_io *w, int revents)
1012	{	1610	{
1013	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1611	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1014	}	1612	}
1015		1613
1016	static void	1614	static void
1017	once_cb_to (struct ev_timer *w, int revents)	1615	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1018	{	1616	{
1019	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1617	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1020	}	1618	}
1021		1619
1022	void	1620	void
1023	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1621	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1024	{	1622	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	1623	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1026		1624
1027	if (!once)	1625	if (!once)
1028	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1626	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1029	else	1627	else
1030	{	1628	{
1031	once->cb = cb;	1629	once->cb = cb;
1032	once->arg = arg;	1630	once->arg = arg;
1033		1631
1034	ev_watcher_init (&once->io, once_cb_io);	1632	ev_init (&once->io, once_cb_io);
1035	if (fd >= 0)	1633	if (fd >= 0)
1036	{	1634	{
1037	ev_io_set (&once->io, fd, events);	1635	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	1636	ev_io_start (EV_A_ &once->io);
1039	}	1637	}
1040		1638
1041	ev_watcher_init (&once->to, once_cb_to);	1639	ev_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	1640	if (timeout >= 0.)
1043	{	1641	{
1044	ev_timer_set (&once->to, timeout, 0.);	1642	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	1643	ev_timer_start (EV_A_ &once->to);
1046	}	1644	}
1047	}	1645	}
1048	}	1646	}
1049		1647
1050	/*****************************************************************************/	1648	#ifdef __cplusplus
1051
1052	#if 0
1053
1054	struct ev_io wio;
1055
1056	static void
1057	sin_cb (struct ev_io *w, int revents)
1058	{
1059	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1060	}	1649	}
1061
1062	static void
1063	ocb (struct ev_timer *w, int revents)
1064	{
1065	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1066	ev_timer_stop (w);
1067	ev_timer_start (w);
1068	}
1069
1070	static void
1071	scb (struct ev_signal *w, int revents)
1072	{
1073	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1074	ev_io_stop (&wio);
1075	ev_io_start (&wio);
1076	}
1077
1078	static void
1079	gcb (struct ev_signal *w, int revents)
1080	{
1081	fprintf (stderr, "generic %x\n", revents);
1082
1083	}
1084
1085	int main (void)
1086	{
1087	ev_init (0);
1088
1089	ev_io_init (&wio, sin_cb, 0, EV_READ);
1090	ev_io_start (&wio);
1091
1092	struct ev_timer t[10000];
1093
1094	#if 0
1095	int i;
1096	for (i = 0; i < 10000; ++i)
1097	{
1098	struct ev_timer *w = t + i;
1099	ev_watcher_init (w, ocb, i);
1100	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1101	ev_timer_start (w);
1102	if (drand48 () < 0.5)
1103	ev_timer_stop (w);
1104	}
1105	#endif	1650	#endif
1106		1651
1107	struct ev_timer t1;
1108	ev_timer_init (&t1, ocb, 5, 10);
1109	ev_timer_start (&t1);
1110
1111	struct ev_signal sig;
1112	ev_signal_init (&sig, scb, SIGQUIT);
1113	ev_signal_start (&sig);
1114
1115	struct ev_check cw;
1116	ev_check_init (&cw, gcb);
1117	ev_check_start (&cw);
1118
1119	struct ev_idle iw;
1120	ev_idle_init (&iw, gcb);
1121	ev_idle_start (&iw);
1122
1123	ev_loop (0);
1124
1125	return 0;
1126	}
1127
1128	#endif
1129
1130
1131
1132

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Comparing libev/ev.c (file contents): Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs. Revision 1.116 by root, Thu Nov 15 09:19:42 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.31 by root, Thu Nov 1 09:05:33 2007 UTC vs.
Revision 1.116 by root, Thu Nov 15 09:19:42 2007 UTC