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

Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs.
Revision 1.120 by root, Fri Nov 16 01:54:25 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
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
31	#endif	68	#endif
32		69
33	#include <math.h>	70	#include <math.h>
34	#include <stdlib.h>	71	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	72	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	73	#include <stddef.h>
39		74
40	#include <stdio.h>	75	#include <stdio.h>
41		76
42	#include <assert.h>	77	#include <assert.h>
43	#include <errno.h>	78	#include <errno.h>
44	#include <sys/types.h>	79	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	80	#include <time.h>
48		81
		82	#include <signal.h>
		83
		84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
		87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
		93	# endif
		94	#endif
		95
		96	/**/
		97
49	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 1
52	# endif	100	#endif
		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 1
53	#endif	104	#endif
54		105
55	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
		108	# define EV_SELECT_USE_FD_SET 1
		109	#endif
		110
		111	#ifndef EV_USE_POLL
		112	# ifdef _WIN32
		113	# define EV_USE_POLL 0
		114	# else
		115	# define EV_USE_POLL 1
		116	# endif
57	#endif	117	#endif
58		118
59	#ifndef EV_USE_EPOLL	119	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	120	# define EV_USE_EPOLL 0
61	#endif	121	#endif
62		122
		123	#ifndef EV_USE_KQUEUE
		124	# define EV_USE_KQUEUE 0
		125	#endif
		126
		127	#ifndef EV_USE_PORT
		128	# define EV_USE_PORT 0
		129	#endif
		130
		131	/**/
		132
		133	/* darwin simply cannot be helped */
		134	#ifdef __APPLE__
		135	# undef EV_USE_POLL
		136	# undef EV_USE_KQUEUE
		137	#endif
		138
		139	#ifndef CLOCK_MONOTONIC
		140	# undef EV_USE_MONOTONIC
		141	# define EV_USE_MONOTONIC 0
		142	#endif
		143
63	#ifndef CLOCK_REALTIME	144	#ifndef CLOCK_REALTIME
		145	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	146	# define EV_USE_REALTIME 0
65	#endif	147	#endif
66	#ifndef EV_USE_REALTIME	148
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	149	#if EV_SELECT_IS_WINSOCKET
		150	# include <winsock.h>
68	#endif	151	#endif
		152
		153	/**/
69		154
70	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	155	#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) */	156	#define MAX_BLOCKTIME 59.743 /* 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 */	157	#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 */	158	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
74		159
		160	#ifdef EV_H
		161	# include EV_H
		162	#else
75	#include "ev.h"	163	# include "ev.h"
		164	#endif
		165
		166	#if __GNUC__ >= 3
		167	# define expect(expr,value) __builtin_expect ((expr),(value))
		168	# define inline inline
		169	#else
		170	# define expect(expr,value) (expr)
		171	# define inline static
		172	#endif
		173
		174	#define expect_false(expr) expect ((expr) != 0, 0)
		175	#define expect_true(expr) expect ((expr) != 0, 1)
		176
		177	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		178	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		179
		180	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		181	#define EMPTY2(a,b) /* used to suppress some warnings */
76		182
77	typedef struct ev_watcher *W;	183	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	184	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	185	typedef struct ev_watcher_time *WT;
80		186
81	static ev_tstamp now, diff; /* monotonic clock */	187	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		188
		189	#ifdef _WIN32
		190	# include "ev_win32.c"
		191	#endif
		192
		193	/*****************************************************************************/
		194
		195	static void (syserr_cb)(const char msg);
		196
		197	void ev_set_syserr_cb (void (cb)(const char msg))
		198	{
		199	syserr_cb = cb;
		200	}
		201
		202	static void
		203	syserr (const char *msg)
		204	{
		205	if (!msg)
		206	msg = "(libev) system error";
		207
		208	if (syserr_cb)
		209	syserr_cb (msg);
		210	else
		211	{
		212	perror (msg);
		213	abort ();
		214	}
		215	}
		216
		217	static void (alloc)(void *ptr, long size);
		218
		219	void ev_set_allocator (void (cb)(void *ptr, long size))
		220	{
		221	alloc = cb;
		222	}
		223
		224	static void *
		225	ev_realloc (void *ptr, long size)
		226	{
		227	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		228
		229	if (!ptr && size)
		230	{
		231	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		232	abort ();
		233	}
		234
		235	return ptr;
		236	}
		237
		238	#define ev_malloc(size) ev_realloc (0, (size))
		239	#define ev_free(ptr) ev_realloc ((ptr), 0)
		240
		241	/*****************************************************************************/
		242
		243	typedef struct
		244	{
		245	WL head;
		246	unsigned char events;
		247	unsigned char reify;
		248	#if EV_SELECT_IS_WINSOCKET
		249	SOCKET handle;
		250	#endif
		251	} ANFD;
		252
		253	typedef struct
		254	{
		255	W w;
		256	int events;
		257	} ANPENDING;
		258
		259	#if EV_MULTIPLICITY
		260
		261	struct ev_loop
		262	{
		263	ev_tstamp ev_rt_now;
		264	#define ev_rt_now ((loop)->ev_rt_now)
		265	#define VAR(name,decl) decl;
		266	#include "ev_vars.h"
		267	#undef VAR
		268	};
		269	#include "ev_wrap.h"
		270
		271	static struct ev_loop default_loop_struct;
		272	struct ev_loop *ev_default_loop_ptr;
		273
		274	#else
		275
82	ev_tstamp ev_now;	276	ev_tstamp ev_rt_now;
83	int ev_method;	277	#define VAR(name,decl) static decl;
		278	#include "ev_vars.h"
		279	#undef VAR
84		280
85	static int have_monotonic; /* runtime */	281	static int ev_default_loop_ptr;
86		282
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	283	#endif
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		284
91	/*****************************************************************************/	285	/*****************************************************************************/
92		286
93	ev_tstamp	287	ev_tstamp
94	ev_time (void)	288	ev_time (void)
…		…
102	gettimeofday (&tv, 0);	296	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	297	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	298	#endif
105	}	299	}
106		300
107	static ev_tstamp	301	inline ev_tstamp
108	get_clock (void)	302	get_clock (void)
109	{	303	{
110	#if EV_USE_MONOTONIC	304	#if EV_USE_MONOTONIC
111	if (have_monotonic)	305	if (expect_true (have_monotonic))
112	{	306	{
113	struct timespec ts;	307	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	308	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	309	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	310	}
117	#endif	311	#endif
118		312
119	return ev_time ();	313	return ev_time ();
120	}	314	}
121		315
		316	#if EV_MULTIPLICITY
		317	ev_tstamp
		318	ev_now (EV_P)
		319	{
		320	return ev_rt_now;
		321	}
		322	#endif
		323
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	324	#define array_roundsize(type,n) (((n) \| 4) & ~3)
123		325
124	#define array_needsize(base,cur,cnt,init) \	326	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	327	if (expect_false ((cnt) > cur)) \
126	{ \	328	{ \
127	int newcnt = cur; \	329	int newcnt = cur; \
128	do \	330	do \
129	{ \	331	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	332	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	333	} \
132	while ((cnt) > newcnt); \	334	while ((cnt) > newcnt); \
133	\	335	\
134	base = realloc (base, sizeof (base) (newcnt)); \	336	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	337	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	338	cur = newcnt; \
137	}	339	}
		340
		341	#define array_slim(type,stem) \
		342	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		343	{ \
		344	stem ## max = array_roundsize (stem ## cnt >> 1); \
		345	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		346	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		347	}
		348
		349	#define array_free(stem, idx) \
		350	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		351
139	/*****************************************************************************/	352	/*****************************************************************************/
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		353
150	static void	354	static void
151	anfds_init (ANFD *base, int count)	355	anfds_init (ANFD *base, int count)
152	{	356	{
153	while (count--)	357	while (count--)
154	{	358	{
155	base->head = 0;	359	base->head = 0;
156	base->events = EV_NONE;	360	base->events = EV_NONE;
		361	base->reify = 0;
		362
157	++base;	363	++base;
158	}	364	}
159	}	365	}
160		366
161	typedef struct	367	void
		368	ev_feed_event (EV_P_ void *w, int revents)
162	{	369	{
163	W w;	370	W w_ = (W)w;
164	int events;
165	} ANPENDING;
166		371
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void
171	event (W w, int events)
172	{
173	if (w->pending)	372	if (w_->pending)
174	{	373	{
175	pendings [w->pending - 1].events \|= events;	374	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
176	return;	375	return;
177	}	376	}
178		377
179	w->pending = ++pendingcnt;	378	w_->pending = ++pendingcnt [ABSPRI (w_)];
180	array_needsize (pendings, pendingmax, pendingcnt, );	379	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
181	pendings [pendingcnt - 1].w = w;	380	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
182	pendings [pendingcnt - 1].events = events;	381	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
183	}	382	}
184		383
185	static void	384	static void
186	queue_events (W *events, int eventcnt, int type)	385	queue_events (EV_P_ W *events, int eventcnt, int type)
187	{	386	{
188	int i;	387	int i;
189		388
190	for (i = 0; i < eventcnt; ++i)	389	for (i = 0; i < eventcnt; ++i)
191	event (events [i], type);	390	ev_feed_event (EV_A_ events [i], type);
192	}	391	}
193		392
194	static void	393	inline void
195	fd_event (int fd, int events)	394	fd_event (EV_P_ int fd, int revents)
196	{	395	{
197	ANFD *anfd = anfds + fd;	396	ANFD *anfd = anfds + fd;
198	struct ev_io *w;	397	struct ev_io *w;
199		398
200	for (w = anfd->head; w; w = w->next)	399	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
201	{	400	{
202	int ev = w->events & events;	401	int ev = w->events & revents;
203		402
204	if (ev)	403	if (ev)
205	event ((W)w, ev);	404	ev_feed_event (EV_A_ (W)w, ev);
206	}	405	}
		406	}
		407
		408	void
		409	ev_feed_fd_event (EV_P_ int fd, int revents)
		410	{
		411	fd_event (EV_A_ fd, revents);
207	}	412	}
208		413
209	/*****************************************************************************/	414	/*****************************************************************************/
210		415
211	static int *fdchanges;
212	static int fdchangemax, fdchangecnt;
213
214	static void	416	static void
215	fd_reify (void)	417	fd_reify (EV_P)
216	{	418	{
217	int i;	419	int i;
218		420
219	for (i = 0; i < fdchangecnt; ++i)	421	for (i = 0; i < fdchangecnt; ++i)
220	{	422	{
…		…
222	ANFD *anfd = anfds + fd;	424	ANFD *anfd = anfds + fd;
223	struct ev_io *w;	425	struct ev_io *w;
224		426
225	int events = 0;	427	int events = 0;
226		428
227	for (w = anfd->head; w; w = w->next)	429	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
228	events \|= w->events;	430	events \|= w->events;
229		431
230	anfd->events &= ~EV_REIFY;	432	#if EV_SELECT_IS_WINSOCKET
231		433	if (events)
232	if (anfd->events != events)
233	{	434	{
234	method_modify (fd, anfd->events, events);	435	unsigned long argp;
235	anfd->events = events;	436	anfd->handle = _get_osfhandle (fd);
		437	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
236	}	438	}
		439	#endif
		440
		441	anfd->reify = 0;
		442
		443	method_modify (EV_A_ fd, anfd->events, events);
		444	anfd->events = events;
237	}	445	}
238		446
239	fdchangecnt = 0;	447	fdchangecnt = 0;
240	}	448	}
241		449
242	static void	450	static void
243	fd_change (int fd)	451	fd_change (EV_P_ int fd)
244	{	452	{
245	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	453	if (anfds [fd].reify)
246	return;	454	return;
247		455
248	anfds [fd].events \|= EV_REIFY;	456	anfds [fd].reify = 1;
249		457
250	++fdchangecnt;	458	++fdchangecnt;
251	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	459	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
252	fdchanges [fdchangecnt - 1] = fd;	460	fdchanges [fdchangecnt - 1] = fd;
253	}	461	}
254		462
		463	static void
		464	fd_kill (EV_P_ int fd)
		465	{
		466	struct ev_io *w;
		467
		468	while ((w = (struct ev_io *)anfds [fd].head))
		469	{
		470	ev_io_stop (EV_A_ w);
		471	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		472	}
		473	}
		474
		475	static int
		476	fd_valid (int fd)
		477	{
		478	#ifdef _WIN32
		479	return _get_osfhandle (fd) != -1;
		480	#else
		481	return fcntl (fd, F_GETFD) != -1;
		482	#endif
		483	}
		484
255	/* called on EBADF to verify fds */	485	/* called on EBADF to verify fds */
256	static void	486	static void
257	fd_recheck (void)	487	fd_ebadf (EV_P)
258	{	488	{
259	int fd;	489	int fd;
260		490
261	for (fd = 0; fd < anfdmax; ++fd)	491	for (fd = 0; fd < anfdmax; ++fd)
262	if (anfds [fd].events)	492	if (anfds [fd].events)
263	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	493	if (!fd_valid (fd) == -1 && errno == EBADF)
264	while (anfds [fd].head)	494	fd_kill (EV_A_ fd);
		495	}
		496
		497	/* called on ENOMEM in select/poll to kill some fds and retry */
		498	static void
		499	fd_enomem (EV_P)
		500	{
		501	int fd;
		502
		503	for (fd = anfdmax; fd--; )
		504	if (anfds [fd].events)
265	{	505	{
266	ev_io_stop (anfds [fd].head);	506	fd_kill (EV_A_ fd);
267	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	507	return;
268	}	508	}
		509	}
		510
		511	/* usually called after fork if method needs to re-arm all fds from scratch */
		512	static void
		513	fd_rearm_all (EV_P)
		514	{
		515	int fd;
		516
		517	/* this should be highly optimised to not do anything but set a flag */
		518	for (fd = 0; fd < anfdmax; ++fd)
		519	if (anfds [fd].events)
		520	{
		521	anfds [fd].events = 0;
		522	fd_change (EV_A_ fd);
		523	}
269	}	524	}
270		525
271	/*****************************************************************************/	526	/*****************************************************************************/
272		527
273	static struct ev_timer **timers;
274	static int timermax, timercnt;
275
276	static struct ev_periodic **periodics;
277	static int periodicmax, periodiccnt;
278
279	static void	528	static void
280	upheap (WT *timers, int k)	529	upheap (WT *heap, int k)
281	{	530	{
282	WT w = timers [k];	531	WT w = heap [k];
283		532
284	while (k && timers [k >> 1]->at > w->at)	533	while (k && heap [k >> 1]->at > w->at)
285	{	534	{
286	timers [k] = timers [k >> 1];	535	heap [k] = heap [k >> 1];
287	timers [k]->active = k + 1;	536	((W)heap [k])->active = k + 1;
288	k >>= 1;	537	k >>= 1;
289	}	538	}
290		539
291	timers [k] = w;	540	heap [k] = w;
292	timers [k]->active = k + 1;	541	((W)heap [k])->active = k + 1;
293		542
294	}	543	}
295		544
296	static void	545	static void
297	downheap (WT *timers, int N, int k)	546	downheap (WT *heap, int N, int k)
298	{	547	{
299	WT w = timers [k];	548	WT w = heap [k];
300		549
301	while (k < (N >> 1))	550	while (k < (N >> 1))
302	{	551	{
303	int j = k << 1;	552	int j = k << 1;
304		553
305	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	554	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
306	++j;	555	++j;
307		556
308	if (w->at <= timers [j]->at)	557	if (w->at <= heap [j]->at)
309	break;	558	break;
310		559
311	timers [k] = timers [j];	560	heap [k] = heap [j];
312	timers [k]->active = k + 1;	561	((W)heap [k])->active = k + 1;
313	k = j;	562	k = j;
314	}	563	}
315		564
316	timers [k] = w;	565	heap [k] = w;
317	timers [k]->active = k + 1;	566	((W)heap [k])->active = k + 1;
		567	}
		568
		569	inline void
		570	adjustheap (WT *heap, int N, int k)
		571	{
		572	upheap (heap, k);
		573	downheap (heap, N, k);
318	}	574	}
319		575
320	/*****************************************************************************/	576	/*****************************************************************************/
321		577
322	typedef struct	578	typedef struct
323	{	579	{
324	struct ev_signal *head;	580	WL head;
325	sig_atomic_t gotsig;	581	sig_atomic_t volatile gotsig;
326	} ANSIG;	582	} ANSIG;
327		583
328	static ANSIG *signals;	584	static ANSIG *signals;
329	static int signalmax;	585	static int signalmax;
330		586
331	static int sigpipe [2];	587	static int sigpipe [2];
332	static sig_atomic_t gotsig;	588	static sig_atomic_t volatile gotsig;
333	static struct ev_io sigev;	589	static struct ev_io sigev;
334		590
335	static void	591	static void
336	signals_init (ANSIG *base, int count)	592	signals_init (ANSIG *base, int count)
337	{	593	{
338	while (count--)	594	while (count--)
339	{	595	{
340	base->head = 0;	596	base->head = 0;
341	base->gotsig = 0;	597	base->gotsig = 0;
		598
342	++base;	599	++base;
343	}	600	}
344	}	601	}
345		602
346	static void	603	static void
347	sighandler (int signum)	604	sighandler (int signum)
348	{	605	{
		606	#if _WIN32
		607	signal (signum, sighandler);
		608	#endif
		609
349	signals [signum - 1].gotsig = 1;	610	signals [signum - 1].gotsig = 1;
350		611
351	if (!gotsig)	612	if (!gotsig)
352	{	613	{
		614	int old_errno = errno;
353	gotsig = 1;	615	gotsig = 1;
354	write (sigpipe [1], &gotsig, 1);	616	write (sigpipe [1], &signum, 1);
		617	errno = old_errno;
355	}	618	}
356	}	619	}
357		620
		621	void
		622	ev_feed_signal_event (EV_P_ int signum)
		623	{
		624	WL w;
		625
		626	#if EV_MULTIPLICITY
		627	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		628	#endif
		629
		630	--signum;
		631
		632	if (signum < 0 \|\| signum >= signalmax)
		633	return;
		634
		635	signals [signum].gotsig = 0;
		636
		637	for (w = signals [signum].head; w; w = w->next)
		638	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		639	}
		640
358	static void	641	static void
359	sigcb (struct ev_io *iow, int revents)	642	sigcb (EV_P_ struct ev_io *iow, int revents)
360	{	643	{
361	struct ev_signal *w;
362	int sig;	644	int signum;
363		645
		646	read (sigpipe [0], &revents, 1);
364	gotsig = 0;	647	gotsig = 0;
365	read (sigpipe [0], &revents, 1);
366		648
367	for (sig = signalmax; sig--; )	649	for (signum = signalmax; signum--; )
368	if (signals [sig].gotsig)	650	if (signals [signum].gotsig)
369	{	651	ev_feed_signal_event (EV_A_ signum + 1);
370	signals [sig].gotsig = 0;
371
372	for (w = signals [sig].head; w; w = w->next)
373	event ((W)w, EV_SIGNAL);
374	}
375	}	652	}
376		653
377	static void	654	inline void
378	siginit (void)	655	fd_intern (int fd)
379	{	656	{
		657	#ifdef _WIN32
		658	int arg = 1;
		659	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		660	#else
380	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	661	fcntl (fd, F_SETFD, FD_CLOEXEC);
381	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
382
383	/* rather than sort out wether we really need nb, set it */
384	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	662	fcntl (fd, F_SETFL, O_NONBLOCK);
385	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	663	#endif
		664	}
		665
		666	static void
		667	siginit (EV_P)
		668	{
		669	fd_intern (sigpipe [0]);
		670	fd_intern (sigpipe [1]);
386		671
387	ev_io_set (&sigev, sigpipe [0], EV_READ);	672	ev_io_set (&sigev, sigpipe [0], EV_READ);
388	ev_io_start (&sigev);	673	ev_io_start (EV_A_ &sigev);
		674	ev_unref (EV_A); /* child watcher should not keep loop alive */
389	}	675	}
390		676
391	/*****************************************************************************/	677	/*****************************************************************************/
392		678
393	static struct ev_idle **idles;
394	static int idlemax, idlecnt;
395
396	static struct ev_prepare **prepares;
397	static int preparemax, preparecnt;
398
399	static struct ev_check **checks;
400	static int checkmax, checkcnt;
401
402	/*****************************************************************************/
403
404	static struct ev_child *childs [PID_HASHSIZE];	679	static struct ev_child *childs [PID_HASHSIZE];
		680
		681	#ifndef _WIN32
		682
405	static struct ev_signal childev;	683	static struct ev_signal childev;
406		684
407	#ifndef WCONTINUED	685	#ifndef WCONTINUED
408	# define WCONTINUED 0	686	# define WCONTINUED 0
409	#endif	687	#endif
410		688
411	static void	689	static void
412	childcb (struct ev_signal *sw, int revents)	690	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
413	{	691	{
414	struct ev_child *w;	692	struct ev_child *w;
		693
		694	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		695	if (w->pid == pid \|\| !w->pid)
		696	{
		697	ev_priority (w) = ev_priority (sw); /* need to do it now */
		698	w->rpid = pid;
		699	w->rstatus = status;
		700	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		701	}
		702	}
		703
		704	static void
		705	childcb (EV_P_ struct ev_signal *sw, int revents)
		706	{
415	int pid, status;	707	int pid, status;
416		708
417	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	709	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
418	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	710	{
419	if (w->pid == pid \|\| w->pid == -1)	711	/* make sure we are called again until all childs have been reaped */
420	{	712	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
421	w->status = status;	713
422	event ((W)w, EV_CHILD);	714	child_reap (EV_A_ sw, pid, pid, status);
423	}	715	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		716	}
424	}	717	}
		718
		719	#endif
425		720
426	/*****************************************************************************/	721	/*****************************************************************************/
427		722
		723	#if EV_USE_PORT
		724	# include "ev_port.c"
		725	#endif
		726	#if EV_USE_KQUEUE
		727	# include "ev_kqueue.c"
		728	#endif
428	#if EV_USE_EPOLL	729	#if EV_USE_EPOLL
429	# include "ev_epoll.c"	730	# include "ev_epoll.c"
430	#endif	731	#endif
		732	#if EV_USE_POLL
		733	# include "ev_poll.c"
		734	#endif
431	#if EV_USE_SELECT	735	#if EV_USE_SELECT
432	# include "ev_select.c"	736	# include "ev_select.c"
433	#endif	737	#endif
434		738
435	int	739	int
…		…
442	ev_version_minor (void)	746	ev_version_minor (void)
443	{	747	{
444	return EV_VERSION_MINOR;	748	return EV_VERSION_MINOR;
445	}	749	}
446		750
447	int ev_init (int flags)	751	/* return true if we are running with elevated privileges and should ignore env variables */
		752	static int
		753	enable_secure (void)
448	{	754	{
		755	#ifdef _WIN32
		756	return 0;
		757	#else
		758	return getuid () != geteuid ()
		759	\|\| getgid () != getegid ();
		760	#endif
		761	}
		762
		763	unsigned int
		764	ev_method (EV_P)
		765	{
		766	return method;
		767	}
		768
		769	static void
		770	loop_init (EV_P_ unsigned int flags)
		771	{
449	if (!ev_method)	772	if (!method)
450	{	773	{
451	#if EV_USE_MONOTONIC	774	#if EV_USE_MONOTONIC
452	{	775	{
453	struct timespec ts;	776	struct timespec ts;
454	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	777	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
455	have_monotonic = 1;	778	have_monotonic = 1;
456	}	779	}
457	#endif	780	#endif
458		781
459	ev_now = ev_time ();	782	ev_rt_now = ev_time ();
460	now = get_clock ();	783	mn_now = get_clock ();
		784	now_floor = mn_now;
461	diff = ev_now - now;	785	rtmn_diff = ev_rt_now - mn_now;
462		786
463	if (pipe (sigpipe))	787	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
464	return 0;	788	flags = atoi (getenv ("LIBEV_FLAGS"));
465		789
466	ev_method = EVMETHOD_NONE;	790	if (!(flags & 0x0000ffff))
		791	flags \|= 0x0000ffff;
		792
		793	method = 0;
		794	#if EV_USE_PORT
		795	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		796	#endif
		797	#if EV_USE_KQUEUE
		798	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		799	#endif
467	#if EV_USE_EPOLL	800	#if EV_USE_EPOLL
468	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	801	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		802	#endif
		803	#if EV_USE_POLL
		804	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
469	#endif	805	#endif
470	#if EV_USE_SELECT	806	#if EV_USE_SELECT
471	if (ev_method == EVMETHOD_NONE) select_init (flags);	807	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
472	#endif	808	#endif
473		809
		810	ev_init (&sigev, sigcb);
		811	ev_set_priority (&sigev, EV_MAXPRI);
		812	}
		813	}
		814
		815	void
		816	loop_destroy (EV_P)
		817	{
		818	int i;
		819
		820	#if EV_USE_PORT
		821	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		822	#endif
		823	#if EV_USE_KQUEUE
		824	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		825	#endif
		826	#if EV_USE_EPOLL
		827	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		828	#endif
		829	#if EV_USE_POLL
		830	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		831	#endif
		832	#if EV_USE_SELECT
		833	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		834	#endif
		835
		836	for (i = NUMPRI; i--; )
		837	array_free (pending, [i]);
		838
		839	/* have to use the microsoft-never-gets-it-right macro */
		840	array_free (fdchange, EMPTY0);
		841	array_free (timer, EMPTY0);
		842	#if EV_PERIODICS
		843	array_free (periodic, EMPTY0);
		844	#endif
		845	array_free (idle, EMPTY0);
		846	array_free (prepare, EMPTY0);
		847	array_free (check, EMPTY0);
		848
		849	method = 0;
		850	}
		851
		852	static void
		853	loop_fork (EV_P)
		854	{
		855	#if EV_USE_PORT
		856	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		857	#endif
		858	#if EV_USE_KQUEUE
		859	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		860	#endif
		861	#if EV_USE_EPOLL
		862	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		863	#endif
		864
		865	if (ev_is_active (&sigev))
		866	{
		867	/* default loop */
		868
		869	ev_ref (EV_A);
		870	ev_io_stop (EV_A_ &sigev);
		871	close (sigpipe [0]);
		872	close (sigpipe [1]);
		873
		874	while (pipe (sigpipe))
		875	syserr ("(libev) error creating pipe");
		876
		877	siginit (EV_A);
		878	}
		879
		880	postfork = 0;
		881	}
		882
		883	#if EV_MULTIPLICITY
		884	struct ev_loop *
		885	ev_loop_new (unsigned int flags)
		886	{
		887	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		888
		889	memset (loop, 0, sizeof (struct ev_loop));
		890
		891	loop_init (EV_A_ flags);
		892
		893	if (ev_method (EV_A))
		894	return loop;
		895
		896	return 0;
		897	}
		898
		899	void
		900	ev_loop_destroy (EV_P)
		901	{
		902	loop_destroy (EV_A);
		903	ev_free (loop);
		904	}
		905
		906	void
		907	ev_loop_fork (EV_P)
		908	{
		909	postfork = 1;
		910	}
		911
		912	#endif
		913
		914	#if EV_MULTIPLICITY
		915	struct ev_loop *
		916	ev_default_loop_ (unsigned int flags)
		917	#else
		918	int
		919	ev_default_loop (unsigned int flags)
		920	#endif
		921	{
		922	if (sigpipe [0] == sigpipe [1])
		923	if (pipe (sigpipe))
		924	return 0;
		925
		926	if (!ev_default_loop_ptr)
		927	{
		928	#if EV_MULTIPLICITY
		929	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		930	#else
		931	ev_default_loop_ptr = 1;
		932	#endif
		933
		934	loop_init (EV_A_ flags);
		935
474	if (ev_method)	936	if (ev_method (EV_A))
475	{	937	{
476	ev_watcher_init (&sigev, sigcb);
477	siginit ();	938	siginit (EV_A);
478		939
		940	#ifndef _WIN32
479	ev_signal_init (&childev, childcb, SIGCHLD);	941	ev_signal_init (&childev, childcb, SIGCHLD);
		942	ev_set_priority (&childev, EV_MAXPRI);
480	ev_signal_start (&childev);	943	ev_signal_start (EV_A_ &childev);
		944	ev_unref (EV_A); /* child watcher should not keep loop alive */
		945	#endif
481	}	946	}
		947	else
		948	ev_default_loop_ptr = 0;
482	}	949	}
483		950
484	return ev_method;	951	return ev_default_loop_ptr;
		952	}
		953
		954	void
		955	ev_default_destroy (void)
		956	{
		957	#if EV_MULTIPLICITY
		958	struct ev_loop *loop = ev_default_loop_ptr;
		959	#endif
		960
		961	#ifndef _WIN32
		962	ev_ref (EV_A); /* child watcher */
		963	ev_signal_stop (EV_A_ &childev);
		964	#endif
		965
		966	ev_ref (EV_A); /* signal watcher */
		967	ev_io_stop (EV_A_ &sigev);
		968
		969	close (sigpipe [0]); sigpipe [0] = 0;
		970	close (sigpipe [1]); sigpipe [1] = 0;
		971
		972	loop_destroy (EV_A);
		973	}
		974
		975	void
		976	ev_default_fork (void)
		977	{
		978	#if EV_MULTIPLICITY
		979	struct ev_loop *loop = ev_default_loop_ptr;
		980	#endif
		981
		982	if (method)
		983	postfork = 1;
485	}	984	}
486		985
487	/*****************************************************************************/	986	/*****************************************************************************/
488		987
489	void
490	ev_prefork (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_parent (void)
497	{
498	/* nop */
499	}
500
501	void
502	ev_postfork_child (void)
503	{
504	#if EV_USE_EPOLL
505	if (ev_method == EVMETHOD_EPOLL)
506	epoll_postfork_child ();
507	#endif
508
509	ev_io_stop (&sigev);
510	close (sigpipe [0]);
511	close (sigpipe [1]);
512	pipe (sigpipe);
513	siginit ();
514	}
515
516	/*****************************************************************************/
517
518	static void	988	static int
		989	any_pending (EV_P)
		990	{
		991	int pri;
		992
		993	for (pri = NUMPRI; pri--; )
		994	if (pendingcnt [pri])
		995	return 1;
		996
		997	return 0;
		998	}
		999
		1000	static void
519	call_pending (void)	1001	call_pending (EV_P)
520	{	1002	{
		1003	int pri;
		1004
		1005	for (pri = NUMPRI; pri--; )
521	while (pendingcnt)	1006	while (pendingcnt [pri])
522	{	1007	{
523	ANPENDING *p = pendings + --pendingcnt;	1008	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
524		1009
525	if (p->w)	1010	if (p->w)
526	{	1011	{
527	p->w->pending = 0;	1012	p->w->pending = 0;
528	p->w->cb (p->w, p->events);	1013	EV_CB_INVOKE (p->w, p->events);
529	}	1014	}
530	}	1015	}
531	}	1016	}
532		1017
533	static void	1018	static void
534	timers_reify (void)	1019	timers_reify (EV_P)
535	{	1020	{
536	while (timercnt && timers [0]->at <= now)	1021	while (timercnt && ((WT)timers [0])->at <= mn_now)
537	{	1022	{
538	struct ev_timer *w = timers [0];	1023	struct ev_timer *w = timers [0];
		1024
		1025	assert (("inactive timer on timer heap detected", ev_is_active (w)));
539		1026
540	/* first reschedule or stop timer */	1027	/* first reschedule or stop timer */
541	if (w->repeat)	1028	if (w->repeat)
542	{	1029	{
		1030	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1031
543	w->at = now + w->repeat;	1032	((WT)w)->at += w->repeat;
544	assert (("timer timeout in the past, negative repeat?", w->at > now));	1033	if (((WT)w)->at < mn_now)
		1034	((WT)w)->at = mn_now;
		1035
545	downheap ((WT *)timers, timercnt, 0);	1036	downheap ((WT *)timers, timercnt, 0);
546	}	1037	}
547	else	1038	else
548	ev_timer_stop (w); /* nonrepeating: stop timer */	1039	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
549		1040
550	event ((W)w, EV_TIMEOUT);	1041	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
551	}	1042	}
552	}	1043	}
553		1044
		1045	#if EV_PERIODICS
554	static void	1046	static void
555	periodics_reify (void)	1047	periodics_reify (EV_P)
556	{	1048	{
557	while (periodiccnt && periodics [0]->at <= ev_now)	1049	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
558	{	1050	{
559	struct ev_periodic *w = periodics [0];	1051	struct ev_periodic *w = periodics [0];
560		1052
		1053	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1054
561	/* first reschedule or stop timer */	1055	/* first reschedule or stop timer */
562	if (w->interval)	1056	if (w->reschedule_cb)
563	{	1057	{
		1058	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1059	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1060	downheap ((WT *)periodics, periodiccnt, 0);
		1061	}
		1062	else if (w->interval)
		1063	{
564	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1064	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
565	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1065	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
566	downheap ((WT *)periodics, periodiccnt, 0);	1066	downheap ((WT *)periodics, periodiccnt, 0);
567	}	1067	}
568	else	1068	else
569	ev_periodic_stop (w); /* nonrepeating: stop timer */	1069	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
570		1070
571	event ((W)w, EV_TIMEOUT);	1071	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
572	}	1072	}
573	}	1073	}
574		1074
575	static void	1075	static void
576	periodics_reschedule (ev_tstamp diff)	1076	periodics_reschedule (EV_P)
577	{	1077	{
578	int i;	1078	int i;
579		1079
580	/* adjust periodics after time jump */	1080	/* adjust periodics after time jump */
581	for (i = 0; i < periodiccnt; ++i)	1081	for (i = 0; i < periodiccnt; ++i)
582	{	1082	{
583	struct ev_periodic *w = periodics [i];	1083	struct ev_periodic *w = periodics [i];
584		1084
		1085	if (w->reschedule_cb)
		1086	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
585	if (w->interval)	1087	else if (w->interval)
		1088	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1089	}
		1090
		1091	/* now rebuild the heap */
		1092	for (i = periodiccnt >> 1; i--; )
		1093	downheap ((WT *)periodics, periodiccnt, i);
		1094	}
		1095	#endif
		1096
		1097	inline int
		1098	time_update_monotonic (EV_P)
		1099	{
		1100	mn_now = get_clock ();
		1101
		1102	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1103	{
		1104	ev_rt_now = rtmn_diff + mn_now;
		1105	return 0;
		1106	}
		1107	else
		1108	{
		1109	now_floor = mn_now;
		1110	ev_rt_now = ev_time ();
		1111	return 1;
		1112	}
		1113	}
		1114
		1115	static void
		1116	time_update (EV_P)
		1117	{
		1118	int i;
		1119
		1120	#if EV_USE_MONOTONIC
		1121	if (expect_true (have_monotonic))
		1122	{
		1123	if (time_update_monotonic (EV_A))
586	{	1124	{
587	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1125	ev_tstamp odiff = rtmn_diff;
588		1126
589	if (fabs (diff) >= 1e-4)	1127	for (i = 4; --i; ) /* loop a few times, before making important decisions */
590	{	1128	{
591	ev_periodic_stop (w);	1129	rtmn_diff = ev_rt_now - mn_now;
592	ev_periodic_start (w);
593		1130
594	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1131	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1132	return; /* all is well */
		1133
		1134	ev_rt_now = ev_time ();
		1135	mn_now = get_clock ();
		1136	now_floor = mn_now;
595	}	1137	}
		1138
		1139	# if EV_PERIODICS
		1140	periodics_reschedule (EV_A);
		1141	# endif
		1142	/* no timer adjustment, as the monotonic clock doesn't jump */
		1143	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
596	}	1144	}
597	}	1145	}
598	}	1146	else
599		1147	#endif
600	static void	1148	{
601	time_update (void)
602	{
603	int i;
604
605	ev_now = ev_time ();	1149	ev_rt_now = ev_time ();
606		1150
607	if (have_monotonic)	1151	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
608	{
609	ev_tstamp odiff = diff;
610
611	for (i = 4; --i; ) /* loop a few times, before making important decisions */
612	{	1152	{
613	now = get_clock ();	1153	#if EV_PERIODICS
614	diff = ev_now - now;
615
616	if (fabs (odiff - diff) < MIN_TIMEJUMP)
617	return; /* all is well */
618
619	ev_now = ev_time ();
620	}
621
622	periodics_reschedule (diff - odiff);
623	/* no timer adjustment, as the monotonic clock doesn't jump */
624	}
625	else
626	{
627	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
628	{
629	periodics_reschedule (ev_now - now);	1154	periodics_reschedule (EV_A);
		1155	#endif
630		1156
631	/* adjust timers. this is easy, as the offset is the same for all */	1157	/* adjust timers. this is easy, as the offset is the same for all */
632	for (i = 0; i < timercnt; ++i)	1158	for (i = 0; i < timercnt; ++i)
633	timers [i]->at += diff;	1159	((WT)timers [i])->at += ev_rt_now - mn_now;
634	}	1160	}
635		1161
636	now = ev_now;	1162	mn_now = ev_rt_now;
637	}	1163	}
638	}	1164	}
639		1165
640	int ev_loop_done;	1166	void
		1167	ev_ref (EV_P)
		1168	{
		1169	++activecnt;
		1170	}
641		1171
		1172	void
		1173	ev_unref (EV_P)
		1174	{
		1175	--activecnt;
		1176	}
		1177
		1178	static int loop_done;
		1179
		1180	void
642	void ev_loop (int flags)	1181	ev_loop (EV_P_ int flags)
643	{	1182	{
644	double block;	1183	double block;
645	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1184	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
646		1185
647	do	1186	while (activecnt)
648	{	1187	{
649	/* queue check watchers (and execute them) */	1188	/* queue check watchers (and execute them) */
650	if (preparecnt)	1189	if (expect_false (preparecnt))
651	{	1190	{
652	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1191	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
653	call_pending ();	1192	call_pending (EV_A);
654	}	1193	}
655		1194
		1195	/* we might have forked, so reify kernel state if necessary */
		1196	if (expect_false (postfork))
		1197	loop_fork (EV_A);
		1198
656	/* update fd-related kernel structures */	1199	/* update fd-related kernel structures */
657	fd_reify ();	1200	fd_reify (EV_A);
658		1201
659	/* calculate blocking time */	1202	/* calculate blocking time */
660		1203
661	/* we only need this for !monotonic clockor timers, but as we basically	1204	/* we only need this for !monotonic clock or timers, but as we basically
662	always have timers, we just calculate it always */	1205	always have timers, we just calculate it always */
		1206	#if EV_USE_MONOTONIC
		1207	if (expect_true (have_monotonic))
		1208	time_update_monotonic (EV_A);
		1209	else
		1210	#endif
		1211	{
663	ev_now = ev_time ();	1212	ev_rt_now = ev_time ();
		1213	mn_now = ev_rt_now;
		1214	}
664		1215
665	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1216	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
666	block = 0.;	1217	block = 0.;
667	else	1218	else
668	{	1219	{
669	block = MAX_BLOCKTIME;	1220	block = MAX_BLOCKTIME;
670		1221
671	if (timercnt)	1222	if (timercnt)
672	{	1223	{
673	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1224	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
674	if (block > to) block = to;	1225	if (block > to) block = to;
675	}	1226	}
676		1227
		1228	#if EV_PERIODICS
677	if (periodiccnt)	1229	if (periodiccnt)
678	{	1230	{
679	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1231	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
680	if (block > to) block = to;	1232	if (block > to) block = to;
681	}	1233	}
		1234	#endif
682		1235
683	if (block < 0.) block = 0.;	1236	if (block < 0.) block = 0.;
684	}	1237	}
685		1238
686	method_poll (block);	1239	method_poll (EV_A_ block);
687		1240
688	/* update ev_now, do magic */	1241	/* update ev_rt_now, do magic */
689	time_update ();	1242	time_update (EV_A);
690		1243
691	/* queue pending timers and reschedule them */	1244	/* queue pending timers and reschedule them */
692	timers_reify (); /* relative timers called last */	1245	timers_reify (EV_A); /* relative timers called last */
		1246	#if EV_PERIODICS
693	periodics_reify (); /* absolute timers called first */	1247	periodics_reify (EV_A); /* absolute timers called first */
		1248	#endif
694		1249
695	/* queue idle watchers unless io or timers are pending */	1250	/* queue idle watchers unless io or timers are pending */
696	if (!pendingcnt)	1251	if (idlecnt && !any_pending (EV_A))
697	queue_events ((W *)idles, idlecnt, EV_IDLE);	1252	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
698		1253
699	/* queue check watchers, to be executed first */	1254	/* queue check watchers, to be executed first */
700	if (checkcnt)	1255	if (checkcnt)
701	queue_events ((W *)checks, checkcnt, EV_CHECK);	1256	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
702		1257
703	call_pending ();	1258	call_pending (EV_A);
704	}
705	while (!ev_loop_done);
706		1259
		1260	if (loop_done)
		1261	break;
		1262	}
		1263
707	if (ev_loop_done != 2)	1264	if (loop_done != 2)
708	ev_loop_done = 0;	1265	loop_done = 0;
		1266	}
		1267
		1268	void
		1269	ev_unloop (EV_P_ int how)
		1270	{
		1271	loop_done = how;
709	}	1272	}
710		1273
711	/*****************************************************************************/	1274	/*****************************************************************************/
712		1275
713	static void	1276	inline void
714	wlist_add (WL *head, WL elem)	1277	wlist_add (WL *head, WL elem)
715	{	1278	{
716	elem->next = *head;	1279	elem->next = *head;
717	*head = elem;	1280	*head = elem;
718	}	1281	}
719		1282
720	static void	1283	inline void
721	wlist_del (WL *head, WL elem)	1284	wlist_del (WL *head, WL elem)
722	{	1285	{
723	while (*head)	1286	while (*head)
724	{	1287	{
725	if (*head == elem)	1288	if (*head == elem)
…		…
730		1293
731	head = &(*head)->next;	1294	head = &(*head)->next;
732	}	1295	}
733	}	1296	}
734		1297
735	static void	1298	inline void
736	ev_clear (W w)	1299	ev_clear_pending (EV_P_ W w)
737	{	1300	{
738	if (w->pending)	1301	if (w->pending)
739	{	1302	{
740	pendings [w->pending - 1].w = 0;	1303	pendings [ABSPRI (w)][w->pending - 1].w = 0;
741	w->pending = 0;	1304	w->pending = 0;
742	}	1305	}
743	}	1306	}
744		1307
745	static void	1308	inline void
746	ev_start (W w, int active)	1309	ev_start (EV_P_ W w, int active)
747	{	1310	{
		1311	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1312	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1313
748	w->active = active;	1314	w->active = active;
		1315	ev_ref (EV_A);
749	}	1316	}
750		1317
751	static void	1318	inline void
752	ev_stop (W w)	1319	ev_stop (EV_P_ W w)
753	{	1320	{
		1321	ev_unref (EV_A);
754	w->active = 0;	1322	w->active = 0;
755	}	1323	}
756		1324
757	/*****************************************************************************/	1325	/*****************************************************************************/
758		1326
759	void	1327	void
760	ev_io_start (struct ev_io *w)	1328	ev_io_start (EV_P_ struct ev_io *w)
761	{	1329	{
		1330	int fd = w->fd;
		1331
762	if (ev_is_active (w))	1332	if (ev_is_active (w))
763	return;	1333	return;
764		1334
765	int fd = w->fd;	1335	assert (("ev_io_start called with negative fd", fd >= 0));
766		1336
767	ev_start ((W)w, 1);	1337	ev_start (EV_A_ (W)w, 1);
768	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1338	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
769	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1339	wlist_add ((WL *)&anfds[fd].head, (WL)w);
770		1340
771	fd_change (fd);	1341	fd_change (EV_A_ fd);
772	}	1342	}
773		1343
774	void	1344	void
775	ev_io_stop (struct ev_io *w)	1345	ev_io_stop (EV_P_ struct ev_io *w)
776	{	1346	{
777	ev_clear ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
778	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
779	return;	1349	return;
780		1350
		1351	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1352
781	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1353	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
782	ev_stop ((W)w);	1354	ev_stop (EV_A_ (W)w);
783		1355
784	fd_change (w->fd);	1356	fd_change (EV_A_ w->fd);
785	}	1357	}
786		1358
787	void	1359	void
788	ev_timer_start (struct ev_timer *w)	1360	ev_timer_start (EV_P_ struct ev_timer *w)
789	{	1361	{
790	if (ev_is_active (w))	1362	if (ev_is_active (w))
791	return;	1363	return;
792		1364
793	w->at += now;	1365	((WT)w)->at += mn_now;
794		1366
795	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1367	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
796		1368
797	ev_start ((W)w, ++timercnt);	1369	ev_start (EV_A_ (W)w, ++timercnt);
798	array_needsize (timers, timermax, timercnt, );	1370	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
799	timers [timercnt - 1] = w;	1371	timers [timercnt - 1] = w;
800	upheap ((WT *)timers, timercnt - 1);	1372	upheap ((WT *)timers, timercnt - 1);
801	}
802		1373
		1374	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1375	}
		1376
803	void	1377	void
804	ev_timer_stop (struct ev_timer *w)	1378	ev_timer_stop (EV_P_ struct ev_timer *w)
805	{	1379	{
806	ev_clear ((W)w);	1380	ev_clear_pending (EV_A_ (W)w);
807	if (!ev_is_active (w))	1381	if (!ev_is_active (w))
808	return;	1382	return;
809		1383
		1384	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1385
810	if (w->active < timercnt--)	1386	if (((W)w)->active < timercnt--)
811	{	1387	{
812	timers [w->active - 1] = timers [timercnt];	1388	timers [((W)w)->active - 1] = timers [timercnt];
813	downheap ((WT *)timers, timercnt, w->active - 1);	1389	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
814	}	1390	}
815		1391
816	w->at = w->repeat;	1392	((WT)w)->at -= mn_now;
817		1393
818	ev_stop ((W)w);	1394	ev_stop (EV_A_ (W)w);
819	}	1395	}
820		1396
821	void	1397	void
822	ev_timer_again (struct ev_timer *w)	1398	ev_timer_again (EV_P_ struct ev_timer *w)
823	{	1399	{
824	if (ev_is_active (w))	1400	if (ev_is_active (w))
825	{	1401	{
826	if (w->repeat)	1402	if (w->repeat)
827	{	1403	{
828	w->at = now + w->repeat;	1404	((WT)w)->at = mn_now + w->repeat;
829	downheap ((WT *)timers, timercnt, w->active - 1);	1405	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
830	}	1406	}
831	else	1407	else
832	ev_timer_stop (w);	1408	ev_timer_stop (EV_A_ w);
833	}	1409	}
834	else if (w->repeat)	1410	else if (w->repeat)
		1411	{
		1412	w->at = w->repeat;
835	ev_timer_start (w);	1413	ev_timer_start (EV_A_ w);
		1414	}
836	}	1415	}
837		1416
		1417	#if EV_PERIODICS
838	void	1418	void
839	ev_periodic_start (struct ev_periodic *w)	1419	ev_periodic_start (EV_P_ struct ev_periodic *w)
840	{	1420	{
841	if (ev_is_active (w))	1421	if (ev_is_active (w))
842	return;	1422	return;
843		1423
844	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1424	if (w->reschedule_cb)
845		1425	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1426	else if (w->interval)
		1427	{
		1428	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
846	/* this formula differs from the one in periodic_reify because we do not always round up */	1429	/* this formula differs from the one in periodic_reify because we do not always round up */
847	if (w->interval)
848	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1430	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1431	}
849		1432
850	ev_start ((W)w, ++periodiccnt);	1433	ev_start (EV_A_ (W)w, ++periodiccnt);
851	array_needsize (periodics, periodicmax, periodiccnt, );	1434	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
852	periodics [periodiccnt - 1] = w;	1435	periodics [periodiccnt - 1] = w;
853	upheap ((WT *)periodics, periodiccnt - 1);	1436	upheap ((WT *)periodics, periodiccnt - 1);
854	}
855		1437
		1438	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1439	}
		1440
856	void	1441	void
857	ev_periodic_stop (struct ev_periodic *w)	1442	ev_periodic_stop (EV_P_ struct ev_periodic *w)
858	{	1443	{
859	ev_clear ((W)w);	1444	ev_clear_pending (EV_A_ (W)w);
860	if (!ev_is_active (w))	1445	if (!ev_is_active (w))
861	return;	1446	return;
862		1447
		1448	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1449
863	if (w->active < periodiccnt--)	1450	if (((W)w)->active < periodiccnt--)
864	{	1451	{
865	periodics [w->active - 1] = periodics [periodiccnt];	1452	periodics [((W)w)->active - 1] = periodics [periodiccnt];
866	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1453	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
867	}	1454	}
868		1455
869	ev_stop ((W)w);	1456	ev_stop (EV_A_ (W)w);
870	}	1457	}
871		1458
872	void	1459	void
		1460	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1461	{
		1462	/* TODO: use adjustheap and recalculation */
		1463	ev_periodic_stop (EV_A_ w);
		1464	ev_periodic_start (EV_A_ w);
		1465	}
		1466	#endif
		1467
		1468	void
873	ev_signal_start (struct ev_signal *w)	1469	ev_idle_start (EV_P_ struct ev_idle *w)
874	{	1470	{
875	if (ev_is_active (w))	1471	if (ev_is_active (w))
876	return;	1472	return;
877		1473
		1474	ev_start (EV_A_ (W)w, ++idlecnt);
		1475	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1476	idles [idlecnt - 1] = w;
		1477	}
		1478
		1479	void
		1480	ev_idle_stop (EV_P_ struct ev_idle *w)
		1481	{
		1482	ev_clear_pending (EV_A_ (W)w);
		1483	if (!ev_is_active (w))
		1484	return;
		1485
		1486	idles [((W)w)->active - 1] = idles [--idlecnt];
		1487	ev_stop (EV_A_ (W)w);
		1488	}
		1489
		1490	void
		1491	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1492	{
		1493	if (ev_is_active (w))
		1494	return;
		1495
		1496	ev_start (EV_A_ (W)w, ++preparecnt);
		1497	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1498	prepares [preparecnt - 1] = w;
		1499	}
		1500
		1501	void
		1502	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1503	{
		1504	ev_clear_pending (EV_A_ (W)w);
		1505	if (!ev_is_active (w))
		1506	return;
		1507
		1508	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1509	ev_stop (EV_A_ (W)w);
		1510	}
		1511
		1512	void
		1513	ev_check_start (EV_P_ struct ev_check *w)
		1514	{
		1515	if (ev_is_active (w))
		1516	return;
		1517
		1518	ev_start (EV_A_ (W)w, ++checkcnt);
		1519	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1520	checks [checkcnt - 1] = w;
		1521	}
		1522
		1523	void
		1524	ev_check_stop (EV_P_ struct ev_check *w)
		1525	{
		1526	ev_clear_pending (EV_A_ (W)w);
		1527	if (!ev_is_active (w))
		1528	return;
		1529
		1530	checks [((W)w)->active - 1] = checks [--checkcnt];
		1531	ev_stop (EV_A_ (W)w);
		1532	}
		1533
		1534	#ifndef SA_RESTART
		1535	# define SA_RESTART 0
		1536	#endif
		1537
		1538	void
		1539	ev_signal_start (EV_P_ struct ev_signal *w)
		1540	{
		1541	#if EV_MULTIPLICITY
		1542	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1543	#endif
		1544	if (ev_is_active (w))
		1545	return;
		1546
		1547	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1548
878	ev_start ((W)w, 1);	1549	ev_start (EV_A_ (W)w, 1);
879	array_needsize (signals, signalmax, w->signum, signals_init);	1550	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
880	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1551	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
881		1552
882	if (!w->next)	1553	if (!((WL)w)->next)
883	{	1554	{
		1555	#if _WIN32
		1556	signal (w->signum, sighandler);
		1557	#else
884	struct sigaction sa;	1558	struct sigaction sa;
885	sa.sa_handler = sighandler;	1559	sa.sa_handler = sighandler;
886	sigfillset (&sa.sa_mask);	1560	sigfillset (&sa.sa_mask);
887	sa.sa_flags = 0;	1561	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
888	sigaction (w->signum, &sa, 0);	1562	sigaction (w->signum, &sa, 0);
		1563	#endif
889	}	1564	}
890	}	1565	}
891		1566
892	void	1567	void
893	ev_signal_stop (struct ev_signal *w)	1568	ev_signal_stop (EV_P_ struct ev_signal *w)
894	{	1569	{
895	ev_clear ((W)w);	1570	ev_clear_pending (EV_A_ (W)w);
896	if (!ev_is_active (w))	1571	if (!ev_is_active (w))
897	return;	1572	return;
898		1573
899	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1574	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
900	ev_stop ((W)w);	1575	ev_stop (EV_A_ (W)w);
901		1576
902	if (!signals [w->signum - 1].head)	1577	if (!signals [w->signum - 1].head)
903	signal (w->signum, SIG_DFL);	1578	signal (w->signum, SIG_DFL);
904	}	1579	}
905		1580
906	void	1581	void
907	ev_idle_start (struct ev_idle *w)	1582	ev_child_start (EV_P_ struct ev_child *w)
908	{	1583	{
		1584	#if EV_MULTIPLICITY
		1585	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1586	#endif
909	if (ev_is_active (w))	1587	if (ev_is_active (w))
910	return;	1588	return;
911		1589
912	ev_start ((W)w, ++idlecnt);
913	array_needsize (idles, idlemax, idlecnt, );
914	idles [idlecnt - 1] = w;
915	}
916
917	void
918	ev_idle_stop (struct ev_idle *w)
919	{
920	ev_clear ((W)w);
921	if (ev_is_active (w))
922	return;
923
924	idles [w->active - 1] = idles [--idlecnt];
925	ev_stop ((W)w);
926	}
927
928	void
929	ev_prepare_start (struct ev_prepare *w)
930	{
931	if (ev_is_active (w))
932	return;
933
934	ev_start ((W)w, ++preparecnt);
935	array_needsize (prepares, preparemax, preparecnt, );
936	prepares [preparecnt - 1] = w;
937	}
938
939	void
940	ev_prepare_stop (struct ev_prepare *w)
941	{
942	ev_clear ((W)w);
943	if (ev_is_active (w))
944	return;
945
946	prepares [w->active - 1] = prepares [--preparecnt];
947	ev_stop ((W)w);
948	}
949
950	void
951	ev_check_start (struct ev_check *w)
952	{
953	if (ev_is_active (w))
954	return;
955
956	ev_start ((W)w, ++checkcnt);
957	array_needsize (checks, checkmax, checkcnt, );
958	checks [checkcnt - 1] = w;
959	}
960
961	void
962	ev_check_stop (struct ev_check *w)
963	{
964	ev_clear ((W)w);
965	if (ev_is_active (w))
966	return;
967
968	checks [w->active - 1] = checks [--checkcnt];
969	ev_stop ((W)w);
970	}
971
972	void
973	ev_child_start (struct ev_child *w)
974	{
975	if (ev_is_active (w))
976	return;
977
978	ev_start ((W)w, 1);	1590	ev_start (EV_A_ (W)w, 1);
979	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1591	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	}	1592	}
981		1593
982	void	1594	void
983	ev_child_stop (struct ev_child *w)	1595	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1596	{
985	ev_clear ((W)w);	1597	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1598	if (!ev_is_active (w))
987	return;	1599	return;
988		1600
989	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1601	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	ev_stop ((W)w);	1602	ev_stop (EV_A_ (W)w);
991	}	1603	}
992		1604
993	/*****************************************************************************/	1605	/*****************************************************************************/
994		1606
995	struct ev_once	1607	struct ev_once
…		…
999	void (cb)(int revents, void arg);	1611	void (cb)(int revents, void arg);
1000	void *arg;	1612	void *arg;
1001	};	1613	};
1002		1614
1003	static void	1615	static void
1004	once_cb (struct ev_once *once, int revents)	1616	once_cb (EV_P_ struct ev_once *once, int revents)
1005	{	1617	{
1006	void (cb)(int revents, void arg) = once->cb;	1618	void (cb)(int revents, void arg) = once->cb;
1007	void *arg = once->arg;	1619	void *arg = once->arg;
1008		1620
1009	ev_io_stop (&once->io);	1621	ev_io_stop (EV_A_ &once->io);
1010	ev_timer_stop (&once->to);	1622	ev_timer_stop (EV_A_ &once->to);
1011	free (once);	1623	ev_free (once);
1012		1624
1013	cb (revents, arg);	1625	cb (revents, arg);
1014	}	1626	}
1015		1627
1016	static void	1628	static void
1017	once_cb_io (struct ev_io *w, int revents)	1629	once_cb_io (EV_P_ struct ev_io *w, int revents)
1018	{	1630	{
1019	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1631	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1020	}	1632	}
1021		1633
1022	static void	1634	static void
1023	once_cb_to (struct ev_timer *w, int revents)	1635	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1024	{	1636	{
1025	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1637	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1026	}	1638	}
1027		1639
1028	void	1640	void
1029	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1641	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1030	{	1642	{
1031	struct ev_once *once = malloc (sizeof (struct ev_once));	1643	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1032		1644
1033	if (!once)	1645	if (!once)
1034	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1646	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1035	else	1647	else
1036	{	1648	{
1037	once->cb = cb;	1649	once->cb = cb;
1038	once->arg = arg;	1650	once->arg = arg;
1039		1651
1040	ev_watcher_init (&once->io, once_cb_io);	1652	ev_init (&once->io, once_cb_io);
1041	if (fd >= 0)	1653	if (fd >= 0)
1042	{	1654	{
1043	ev_io_set (&once->io, fd, events);	1655	ev_io_set (&once->io, fd, events);
1044	ev_io_start (&once->io);	1656	ev_io_start (EV_A_ &once->io);
1045	}	1657	}
1046		1658
1047	ev_watcher_init (&once->to, once_cb_to);	1659	ev_init (&once->to, once_cb_to);
1048	if (timeout >= 0.)	1660	if (timeout >= 0.)
1049	{	1661	{
1050	ev_timer_set (&once->to, timeout, 0.);	1662	ev_timer_set (&once->to, timeout, 0.);
1051	ev_timer_start (&once->to);	1663	ev_timer_start (EV_A_ &once->to);
1052	}	1664	}
1053	}	1665	}
1054	}	1666	}
1055		1667
1056	/*****************************************************************************/	1668	#ifdef __cplusplus
1057
1058	#if 0
1059
1060	struct ev_io wio;
1061
1062	static void
1063	sin_cb (struct ev_io *w, int revents)
1064	{
1065	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1066	}	1669	}
1067
1068	static void
1069	ocb (struct ev_timer *w, int revents)
1070	{
1071	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1072	ev_timer_stop (w);
1073	ev_timer_start (w);
1074	}
1075
1076	static void
1077	scb (struct ev_signal *w, int revents)
1078	{
1079	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1080	ev_io_stop (&wio);
1081	ev_io_start (&wio);
1082	}
1083
1084	static void
1085	gcb (struct ev_signal *w, int revents)
1086	{
1087	fprintf (stderr, "generic %x\n", revents);
1088
1089	}
1090
1091	int main (void)
1092	{
1093	ev_init (0);
1094
1095	ev_io_init (&wio, sin_cb, 0, EV_READ);
1096	ev_io_start (&wio);
1097
1098	struct ev_timer t[10000];
1099
1100	#if 0
1101	int i;
1102	for (i = 0; i < 10000; ++i)
1103	{
1104	struct ev_timer *w = t + i;
1105	ev_watcher_init (w, ocb, i);
1106	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1107	ev_timer_start (w);
1108	if (drand48 () < 0.5)
1109	ev_timer_stop (w);
1110	}
1111	#endif	1670	#endif
1112		1671
1113	struct ev_timer t1;
1114	ev_timer_init (&t1, ocb, 5, 10);
1115	ev_timer_start (&t1);
1116
1117	struct ev_signal sig;
1118	ev_signal_init (&sig, scb, SIGQUIT);
1119	ev_signal_start (&sig);
1120
1121	struct ev_check cw;
1122	ev_check_init (&cw, gcb);
1123	ev_check_start (&cw);
1124
1125	struct ev_idle iw;
1126	ev_idle_init (&iw, gcb);
1127	ev_idle_start (&iw);
1128
1129	ev_loop (0);
1130
1131	return 0;
1132	}
1133
1134	#endif
1135
1136
1137
1138

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Comparing libev/ev.c (file contents): Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs. Revision 1.120 by root, Fri Nov 16 01:54:25 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs.
Revision 1.120 by root, Fri Nov 16 01:54:25 2007 UTC