[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 1.108 by root, Mon Nov 12 05:40:55 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 EMPTY /* required for microsofts broken pseudo-c compiler */
76		173
77	typedef struct ev_watcher *W;	174	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	175	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	176	typedef struct ev_watcher_time *WT;
80		177
81	static ev_tstamp now, diff; /* monotonic clock */	178	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		179
		180	#ifdef _WIN32
		181	# include "ev_win32.c"
		182	#endif
		183
		184	/*****************************************************************************/
		185
		186	static void (syserr_cb)(const char msg);
		187
		188	void ev_set_syserr_cb (void (cb)(const char msg))
		189	{
		190	syserr_cb = cb;
		191	}
		192
		193	static void
		194	syserr (const char *msg)
		195	{
		196	if (!msg)
		197	msg = "(libev) system error";
		198
		199	if (syserr_cb)
		200	syserr_cb (msg);
		201	else
		202	{
		203	perror (msg);
		204	abort ();
		205	}
		206	}
		207
		208	static void (alloc)(void *ptr, long size);
		209
		210	void ev_set_allocator (void (cb)(void *ptr, long size))
		211	{
		212	alloc = cb;
		213	}
		214
		215	static void *
		216	ev_realloc (void *ptr, long size)
		217	{
		218	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		219
		220	if (!ptr && size)
		221	{
		222	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		223	abort ();
		224	}
		225
		226	return ptr;
		227	}
		228
		229	#define ev_malloc(size) ev_realloc (0, (size))
		230	#define ev_free(ptr) ev_realloc ((ptr), 0)
		231
		232	/*****************************************************************************/
		233
		234	typedef struct
		235	{
		236	WL head;
		237	unsigned char events;
		238	unsigned char reify;
		239	#if EV_SELECT_IS_WINSOCKET
		240	SOCKET handle;
		241	#endif
		242	} ANFD;
		243
		244	typedef struct
		245	{
		246	W w;
		247	int events;
		248	} ANPENDING;
		249
		250	#if EV_MULTIPLICITY
		251
		252	struct ev_loop
		253	{
		254	ev_tstamp ev_rt_now;
		255	#define ev_rt_now ((loop)->ev_rt_now)
		256	#define VAR(name,decl) decl;
		257	#include "ev_vars.h"
		258	#undef VAR
		259	};
		260	#include "ev_wrap.h"
		261
		262	struct ev_loop default_loop_struct;
		263	static struct ev_loop *default_loop;
		264
		265	#else
		266
82	ev_tstamp ev_now;	267	ev_tstamp ev_rt_now;
83	int ev_method;	268	#define VAR(name,decl) static decl;
		269	#include "ev_vars.h"
		270	#undef VAR
84		271
85	static int have_monotonic; /* runtime */	272	static int default_loop;
86		273
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	274	#endif
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		275
91	/*****************************************************************************/	276	/*****************************************************************************/
92		277
93	ev_tstamp	278	ev_tstamp
94	ev_time (void)	279	ev_time (void)
…		…
102	gettimeofday (&tv, 0);	287	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	288	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	289	#endif
105	}	290	}
106		291
107	static ev_tstamp	292	inline ev_tstamp
108	get_clock (void)	293	get_clock (void)
109	{	294	{
110	#if EV_USE_MONOTONIC	295	#if EV_USE_MONOTONIC
111	if (have_monotonic)	296	if (expect_true (have_monotonic))
112	{	297	{
113	struct timespec ts;	298	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	299	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	300	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	301	}
117	#endif	302	#endif
118		303
119	return ev_time ();	304	return ev_time ();
120	}	305	}
121		306
		307	#if EV_MULTIPLICITY
		308	ev_tstamp
		309	ev_now (EV_P)
		310	{
		311	return ev_rt_now;
		312	}
		313	#endif
		314
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	315	#define array_roundsize(type,n) (((n) \| 4) & ~3)
123		316
124	#define array_needsize(base,cur,cnt,init) \	317	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	318	if (expect_false ((cnt) > cur)) \
126	{ \	319	{ \
127	int newcnt = cur; \	320	int newcnt = cur; \
128	do \	321	do \
129	{ \	322	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	323	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	324	} \
132	while ((cnt) > newcnt); \	325	while ((cnt) > newcnt); \
133	\	326	\
134	base = realloc (base, sizeof (base) (newcnt)); \	327	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	328	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	329	cur = newcnt; \
137	}	330	}
		331
		332	#define array_slim(type,stem) \
		333	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		334	{ \
		335	stem ## max = array_roundsize (stem ## cnt >> 1); \
		336	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		337	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		338	}
		339
		340	#define array_free(stem, idx) \
		341	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		342
139	/*****************************************************************************/	343	/*****************************************************************************/
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		344
150	static void	345	static void
151	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
152	{	347	{
153	while (count--)	348	while (count--)
154	{	349	{
155	base->head = 0;	350	base->head = 0;
156	base->events = EV_NONE;	351	base->events = EV_NONE;
		352	base->reify = 0;
		353
157	++base;	354	++base;
158	}	355	}
159	}	356	}
160		357
161	typedef struct	358	void
		359	ev_feed_event (EV_P_ void *w, int revents)
162	{	360	{
163	W w;	361	W w_ = (W)w;
164	int events;
165	} ANPENDING;
166		362
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void
171	event (W w, int events)
172	{
173	if (w->pending)	363	if (w_->pending)
174	{	364	{
175	pendings [w->pending - 1].events \|= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
176	return;	366	return;
177	}	367	}
178		368
179	w->pending = ++pendingcnt;	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
180	array_needsize (pendings, pendingmax, pendingcnt, );	370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
181	pendings [pendingcnt - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
182	pendings [pendingcnt - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
183	}	373	}
184		374
185	static void	375	static void
186	queue_events (W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
187	{	377	{
188	int i;	378	int i;
189		379
190	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
191	event (events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
192	}	382	}
193		383
194	static void	384	inline void
195	fd_event (int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
196	{	386	{
197	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
198	struct ev_io *w;	388	struct ev_io *w;
199		389
200	for (w = anfd->head; w; w = w->next)	390	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
201	{	391	{
202	int ev = w->events & events;	392	int ev = w->events & revents;
203		393
204	if (ev)	394	if (ev)
205	event ((W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
206	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
207	}	403	}
208		404
209	/*****************************************************************************/	405	/*****************************************************************************/
210		406
211	static int *fdchanges;
212	static int fdchangemax, fdchangecnt;
213
214	static void	407	static void
215	fd_reify (void)	408	fd_reify (EV_P)
216	{	409	{
217	int i;	410	int i;
218		411
219	for (i = 0; i < fdchangecnt; ++i)	412	for (i = 0; i < fdchangecnt; ++i)
220	{	413	{
…		…
222	ANFD *anfd = anfds + fd;	415	ANFD *anfd = anfds + fd;
223	struct ev_io *w;	416	struct ev_io *w;
224		417
225	int events = 0;	418	int events = 0;
226		419
227	for (w = anfd->head; w; w = w->next)	420	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
228	events \|= w->events;	421	events \|= w->events;
229		422
230	anfd->events &= ~EV_REIFY;	423	#if EV_SELECT_IS_WINSOCKET
231		424	if (events)
232	if (anfd->events != events)
233	{	425	{
234	method_modify (fd, anfd->events, events);	426	unsigned long argp;
235	anfd->events = events;	427	anfd->handle = _get_osfhandle (fd);
		428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
236	}	429	}
		430	#endif
		431
		432	anfd->reify = 0;
		433
		434	method_modify (EV_A_ fd, anfd->events, events);
		435	anfd->events = events;
237	}	436	}
238		437
239	fdchangecnt = 0;	438	fdchangecnt = 0;
240	}	439	}
241		440
242	static void	441	static void
243	fd_change (int fd)	442	fd_change (EV_P_ int fd)
244	{	443	{
245	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	444	if (anfds [fd].reify)
246	return;	445	return;
247		446
248	anfds [fd].events \|= EV_REIFY;	447	anfds [fd].reify = 1;
249		448
250	++fdchangecnt;	449	++fdchangecnt;
251	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
252	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
253	}	452	}
254		453
		454	static void
		455	fd_kill (EV_P_ int fd)
		456	{
		457	struct ev_io *w;
		458
		459	while ((w = (struct ev_io *)anfds [fd].head))
		460	{
		461	ev_io_stop (EV_A_ w);
		462	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		463	}
		464	}
		465
		466	static int
		467	fd_valid (int fd)
		468	{
		469	#ifdef _WIN32
		470	return _get_osfhandle (fd) != -1;
		471	#else
		472	return fcntl (fd, F_GETFD) != -1;
		473	#endif
		474	}
		475
255	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
256	static void	477	static void
257	fd_recheck (void)	478	fd_ebadf (EV_P)
258	{	479	{
259	int fd;	480	int fd;
260		481
261	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
262	if (anfds [fd].events)	483	if (anfds [fd].events)
263	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
264	while (anfds [fd].head)	485	fd_kill (EV_A_ fd);
		486	}
		487
		488	/* called on ENOMEM in select/poll to kill some fds and retry */
		489	static void
		490	fd_enomem (EV_P)
		491	{
		492	int fd;
		493
		494	for (fd = anfdmax; fd--; )
		495	if (anfds [fd].events)
265	{	496	{
266	ev_io_stop (anfds [fd].head);	497	fd_kill (EV_A_ fd);
267	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	498	return;
268	}	499	}
		500	}
		501
		502	/* usually called after fork if method needs to re-arm all fds from scratch */
		503	static void
		504	fd_rearm_all (EV_P)
		505	{
		506	int fd;
		507
		508	/* this should be highly optimised to not do anything but set a flag */
		509	for (fd = 0; fd < anfdmax; ++fd)
		510	if (anfds [fd].events)
		511	{
		512	anfds [fd].events = 0;
		513	fd_change (EV_A_ fd);
		514	}
269	}	515	}
270		516
271	/*****************************************************************************/	517	/*****************************************************************************/
272		518
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	519	static void
280	upheap (WT *timers, int k)	520	upheap (WT *heap, int k)
281	{	521	{
282	WT w = timers [k];	522	WT w = heap [k];
283		523
284	while (k && timers [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
285	{	525	{
286	timers [k] = timers [k >> 1];	526	heap [k] = heap [k >> 1];
287	timers [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
288	k >>= 1;	528	k >>= 1;
289	}	529	}
290		530
291	timers [k] = w;	531	heap [k] = w;
292	timers [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
293		533
294	}	534	}
295		535
296	static void	536	static void
297	downheap (WT *timers, int N, int k)	537	downheap (WT *heap, int N, int k)
298	{	538	{
299	WT w = timers [k];	539	WT w = heap [k];
300		540
301	while (k < (N >> 1))	541	while (k < (N >> 1))
302	{	542	{
303	int j = k << 1;	543	int j = k << 1;
304		544
305	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
306	++j;	546	++j;
307		547
308	if (w->at <= timers [j]->at)	548	if (w->at <= heap [j]->at)
309	break;	549	break;
310		550
311	timers [k] = timers [j];	551	heap [k] = heap [j];
312	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
313	k = j;	553	k = j;
314	}	554	}
315		555
316	timers [k] = w;	556	heap [k] = w;
317	timers [k]->active = k + 1;	557	((W)heap [k])->active = k + 1;
		558	}
		559
		560	inline void
		561	adjustheap (WT *heap, int N, int k)
		562	{
		563	upheap (heap, k);
		564	downheap (heap, N, k);
318	}	565	}
319		566
320	/*****************************************************************************/	567	/*****************************************************************************/
321		568
322	typedef struct	569	typedef struct
323	{	570	{
324	struct ev_signal *head;	571	WL head;
325	sig_atomic_t gotsig;	572	sig_atomic_t volatile gotsig;
326	} ANSIG;	573	} ANSIG;
327		574
328	static ANSIG *signals;	575	static ANSIG *signals;
329	static int signalmax;	576	static int signalmax;
330		577
331	static int sigpipe [2];	578	static int sigpipe [2];
332	static sig_atomic_t gotsig;	579	static sig_atomic_t volatile gotsig;
333	static struct ev_io sigev;	580	static struct ev_io sigev;
334		581
335	static void	582	static void
336	signals_init (ANSIG *base, int count)	583	signals_init (ANSIG *base, int count)
337	{	584	{
338	while (count--)	585	while (count--)
339	{	586	{
340	base->head = 0;	587	base->head = 0;
341	base->gotsig = 0;	588	base->gotsig = 0;
		589
342	++base;	590	++base;
343	}	591	}
344	}	592	}
345		593
346	static void	594	static void
347	sighandler (int signum)	595	sighandler (int signum)
348	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
349	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
350		602
351	if (!gotsig)	603	if (!gotsig)
352	{	604	{
		605	int old_errno = errno;
353	gotsig = 1;	606	gotsig = 1;
354	write (sigpipe [1], &gotsig, 1);	607	write (sigpipe [1], &signum, 1);
		608	errno = old_errno;
355	}	609	}
356	}	610	}
357		611
		612	void
		613	ev_feed_signal_event (EV_P_ int signum)
		614	{
		615	WL w;
		616
		617	#if EV_MULTIPLICITY
		618	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		619	#endif
		620
		621	--signum;
		622
		623	if (signum < 0 \|\| signum >= signalmax)
		624	return;
		625
		626	signals [signum].gotsig = 0;
		627
		628	for (w = signals [signum].head; w; w = w->next)
		629	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		630	}
		631
358	static void	632	static void
359	sigcb (struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
360	{	634	{
361	struct ev_signal *w;
362	int sig;	635	int signum;
363		636
		637	read (sigpipe [0], &revents, 1);
364	gotsig = 0;	638	gotsig = 0;
365	read (sigpipe [0], &revents, 1);
366		639
367	for (sig = signalmax; sig--; )	640	for (signum = signalmax; signum--; )
368	if (signals [sig].gotsig)	641	if (signals [signum].gotsig)
369	{	642	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	}	643	}
376		644
377	static void	645	inline void
378	siginit (void)	646	fd_intern (int fd)
379	{	647	{
		648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
380	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	652	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);	653	fcntl (fd, F_SETFL, O_NONBLOCK);
385	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	654	#endif
		655	}
		656
		657	static void
		658	siginit (EV_P)
		659	{
		660	fd_intern (sigpipe [0]);
		661	fd_intern (sigpipe [1]);
386		662
387	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
388	ev_io_start (&sigev);	664	ev_io_start (EV_A_ &sigev);
		665	ev_unref (EV_A); /* child watcher should not keep loop alive */
389	}	666	}
390		667
391	/*****************************************************************************/	668	/*****************************************************************************/
392		669
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];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
405	static struct ev_signal childev;	674	static struct ev_signal childev;
406		675
407	#ifndef WCONTINUED	676	#ifndef WCONTINUED
408	# define WCONTINUED 0	677	# define WCONTINUED 0
409	#endif	678	#endif
410		679
411	static void	680	static void
412	childcb (struct ev_signal *sw, int revents)	681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
413	{	682	{
414	struct ev_child *w;	683	struct ev_child *w;
		684
		685	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		686	if (w->pid == pid \|\| !w->pid)
		687	{
		688	ev_priority (w) = ev_priority (sw); /* need to do it now */
		689	w->rpid = pid;
		690	w->rstatus = status;
		691	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		692	}
		693	}
		694
		695	static void
		696	childcb (EV_P_ struct ev_signal *sw, int revents)
		697	{
415	int pid, status;	698	int pid, status;
416		699
417	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
418	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	701	{
419	if (w->pid == pid \|\| w->pid == -1)	702	/* make sure we are called again until all childs have been reaped */
420	{	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
421	w->status = status;	704
422	event ((W)w, EV_CHILD);	705	child_reap (EV_A_ sw, pid, pid, status);
423	}	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		707	}
424	}	708	}
		709
		710	#endif
425		711
426	/*****************************************************************************/	712	/*****************************************************************************/
427		713
		714	#if EV_USE_KQUEUE
		715	# include "ev_kqueue.c"
		716	#endif
428	#if EV_USE_EPOLL	717	#if EV_USE_EPOLL
429	# include "ev_epoll.c"	718	# include "ev_epoll.c"
430	#endif	719	#endif
		720	#if EV_USE_POLL
		721	# include "ev_poll.c"
		722	#endif
431	#if EV_USE_SELECT	723	#if EV_USE_SELECT
432	# include "ev_select.c"	724	# include "ev_select.c"
433	#endif	725	#endif
434		726
435	int	727	int
…		…
442	ev_version_minor (void)	734	ev_version_minor (void)
443	{	735	{
444	return EV_VERSION_MINOR;	736	return EV_VERSION_MINOR;
445	}	737	}
446		738
447	int ev_init (int flags)	739	/* return true if we are running with elevated privileges and should ignore env variables */
		740	static int
		741	enable_secure (void)
448	{	742	{
		743	#ifdef _WIN32
		744	return 0;
		745	#else
		746	return getuid () != geteuid ()
		747	\|\| getgid () != getegid ();
		748	#endif
		749	}
		750
		751	int
		752	ev_method (EV_P)
		753	{
		754	return method;
		755	}
		756
		757	static void
		758	loop_init (EV_P_ unsigned int flags)
		759	{
449	if (!ev_method)	760	if (!method)
450	{	761	{
451	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
452	{	763	{
453	struct timespec ts;	764	struct timespec ts;
454	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
455	have_monotonic = 1;	766	have_monotonic = 1;
456	}	767	}
457	#endif	768	#endif
458		769
459	ev_now = ev_time ();	770	ev_rt_now = ev_time ();
460	now = get_clock ();	771	mn_now = get_clock ();
		772	now_floor = mn_now;
461	diff = ev_now - now;	773	rtmn_diff = ev_rt_now - mn_now;
462		774
463	if (pipe (sigpipe))	775	if (!(flags & EVMETHOD_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
464	return 0;	776	flags = atoi (getenv ("LIBEV_FLAGS"));
465		777
466	ev_method = EVMETHOD_NONE;	778	if (!(flags & 0x0000ffff))
		779	flags \|= 0x0000ffff;
		780
		781	method = 0;
		782	#if EV_USE_KQUEUE
		783	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		784	#endif
467	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
468	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	786	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		787	#endif
		788	#if EV_USE_POLL
		789	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
469	#endif	790	#endif
470	#if EV_USE_SELECT	791	#if EV_USE_SELECT
471	if (ev_method == EVMETHOD_NONE) select_init (flags);	792	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
472	#endif	793	#endif
473		794
		795	ev_init (&sigev, sigcb);
		796	ev_set_priority (&sigev, EV_MAXPRI);
		797	}
		798	}
		799
		800	void
		801	loop_destroy (EV_P)
		802	{
		803	int i;
		804
		805	#if EV_USE_KQUEUE
		806	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		807	#endif
		808	#if EV_USE_EPOLL
		809	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		810	#endif
		811	#if EV_USE_POLL
		812	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		813	#endif
		814	#if EV_USE_SELECT
		815	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		816	#endif
		817
		818	for (i = NUMPRI; i--; )
		819	array_free (pending, [i]);
		820
		821	/* have to use the microsoft-never-gets-it-right macro */
		822	array_free (fdchange, EMPTY);
		823	array_free (timer, EMPTY);
		824	#if EV_PERIODICS
		825	array_free (periodic, EMPTY);
		826	#endif
		827	array_free (idle, EMPTY);
		828	array_free (prepare, EMPTY);
		829	array_free (check, EMPTY);
		830
		831	method = 0;
		832	}
		833
		834	static void
		835	loop_fork (EV_P)
		836	{
		837	#if EV_USE_EPOLL
		838	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		839	#endif
		840	#if EV_USE_KQUEUE
		841	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		842	#endif
		843
		844	if (ev_is_active (&sigev))
		845	{
		846	/* default loop */
		847
		848	ev_ref (EV_A);
		849	ev_io_stop (EV_A_ &sigev);
		850	close (sigpipe [0]);
		851	close (sigpipe [1]);
		852
		853	while (pipe (sigpipe))
		854	syserr ("(libev) error creating pipe");
		855
		856	siginit (EV_A);
		857	}
		858
		859	postfork = 0;
		860	}
		861
		862	#if EV_MULTIPLICITY
		863	struct ev_loop *
		864	ev_loop_new (unsigned int flags)
		865	{
		866	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		867
		868	memset (loop, 0, sizeof (struct ev_loop));
		869
		870	loop_init (EV_A_ flags);
		871
		872	if (ev_method (EV_A))
		873	return loop;
		874
		875	return 0;
		876	}
		877
		878	void
		879	ev_loop_destroy (EV_P)
		880	{
		881	loop_destroy (EV_A);
		882	ev_free (loop);
		883	}
		884
		885	void
		886	ev_loop_fork (EV_P)
		887	{
		888	postfork = 1;
		889	}
		890
		891	#endif
		892
		893	#if EV_MULTIPLICITY
		894	struct ev_loop *
		895	#else
		896	int
		897	#endif
		898	ev_default_loop (unsigned int methods)
		899	{
		900	if (sigpipe [0] == sigpipe [1])
		901	if (pipe (sigpipe))
		902	return 0;
		903
		904	if (!default_loop)
		905	{
		906	#if EV_MULTIPLICITY
		907	struct ev_loop *loop = default_loop = &default_loop_struct;
		908	#else
		909	default_loop = 1;
		910	#endif
		911
		912	loop_init (EV_A_ methods);
		913
474	if (ev_method)	914	if (ev_method (EV_A))
475	{	915	{
476	ev_watcher_init (&sigev, sigcb);
477	siginit ();	916	siginit (EV_A);
478		917
		918	#ifndef _WIN32
479	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
		920	ev_set_priority (&childev, EV_MAXPRI);
480	ev_signal_start (&childev);	921	ev_signal_start (EV_A_ &childev);
		922	ev_unref (EV_A); /* child watcher should not keep loop alive */
		923	#endif
481	}	924	}
		925	else
		926	default_loop = 0;
482	}	927	}
483		928
484	return ev_method;	929	return default_loop;
		930	}
		931
		932	void
		933	ev_default_destroy (void)
		934	{
		935	#if EV_MULTIPLICITY
		936	struct ev_loop *loop = default_loop;
		937	#endif
		938
		939	#ifndef _WIN32
		940	ev_ref (EV_A); /* child watcher */
		941	ev_signal_stop (EV_A_ &childev);
		942	#endif
		943
		944	ev_ref (EV_A); /* signal watcher */
		945	ev_io_stop (EV_A_ &sigev);
		946
		947	close (sigpipe [0]); sigpipe [0] = 0;
		948	close (sigpipe [1]); sigpipe [1] = 0;
		949
		950	loop_destroy (EV_A);
		951	}
		952
		953	void
		954	ev_default_fork (void)
		955	{
		956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = default_loop;
		958	#endif
		959
		960	if (method)
		961	postfork = 1;
485	}	962	}
486		963
487	/*****************************************************************************/	964	/*****************************************************************************/
488		965
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	966	static int
		967	any_pending (EV_P)
		968	{
		969	int pri;
		970
		971	for (pri = NUMPRI; pri--; )
		972	if (pendingcnt [pri])
		973	return 1;
		974
		975	return 0;
		976	}
		977
		978	static void
519	call_pending (void)	979	call_pending (EV_P)
520	{	980	{
		981	int pri;
		982
		983	for (pri = NUMPRI; pri--; )
521	while (pendingcnt)	984	while (pendingcnt [pri])
522	{	985	{
523	ANPENDING *p = pendings + --pendingcnt;	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
524		987
525	if (p->w)	988	if (p->w)
526	{	989	{
527	p->w->pending = 0;	990	p->w->pending = 0;
528	p->w->cb (p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
529	}	992	}
530	}	993	}
531	}	994	}
532		995
533	static void	996	static void
534	timers_reify (void)	997	timers_reify (EV_P)
535	{	998	{
536	while (timercnt && timers [0]->at <= now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
537	{	1000	{
538	struct ev_timer *w = timers [0];	1001	struct ev_timer *w = timers [0];
		1002
		1003	assert (("inactive timer on timer heap detected", ev_is_active (w)));
539		1004
540	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
541	if (w->repeat)	1006	if (w->repeat)
542	{	1007	{
		1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1009
543	w->at = now + w->repeat;	1010	((WT)w)->at += w->repeat;
544	assert (("timer timeout in the past, negative repeat?", w->at > now));	1011	if (((WT)w)->at < mn_now)
		1012	((WT)w)->at = mn_now;
		1013
545	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
546	}	1015	}
547	else	1016	else
548	ev_timer_stop (w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
549		1018
550	event ((W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
551	}	1020	}
552	}	1021	}
553		1022
		1023	#if EV_PERIODICS
554	static void	1024	static void
555	periodics_reify (void)	1025	periodics_reify (EV_P)
556	{	1026	{
557	while (periodiccnt && periodics [0]->at <= ev_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
558	{	1028	{
559	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
560		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
561	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
562	if (w->interval)	1034	if (w->reschedule_cb)
563	{	1035	{
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1037	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1038	downheap ((WT *)periodics, periodiccnt, 0);
		1039	}
		1040	else if (w->interval)
		1041	{
564	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1042	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
565	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1043	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
566	downheap ((WT *)periodics, periodiccnt, 0);	1044	downheap ((WT *)periodics, periodiccnt, 0);
567	}	1045	}
568	else	1046	else
569	ev_periodic_stop (w); /* nonrepeating: stop timer */	1047	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
570		1048
571	event ((W)w, EV_TIMEOUT);	1049	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
572	}	1050	}
573	}	1051	}
574		1052
575	static void	1053	static void
576	periodics_reschedule (ev_tstamp diff)	1054	periodics_reschedule (EV_P)
577	{	1055	{
578	int i;	1056	int i;
579		1057
580	/* adjust periodics after time jump */	1058	/* adjust periodics after time jump */
581	for (i = 0; i < periodiccnt; ++i)	1059	for (i = 0; i < periodiccnt; ++i)
582	{	1060	{
583	struct ev_periodic *w = periodics [i];	1061	struct ev_periodic *w = periodics [i];
584		1062
		1063	if (w->reschedule_cb)
		1064	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
585	if (w->interval)	1065	else if (w->interval)
		1066	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1067	}
		1068
		1069	/* now rebuild the heap */
		1070	for (i = periodiccnt >> 1; i--; )
		1071	downheap ((WT *)periodics, periodiccnt, i);
		1072	}
		1073	#endif
		1074
		1075	inline int
		1076	time_update_monotonic (EV_P)
		1077	{
		1078	mn_now = get_clock ();
		1079
		1080	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1081	{
		1082	ev_rt_now = rtmn_diff + mn_now;
		1083	return 0;
		1084	}
		1085	else
		1086	{
		1087	now_floor = mn_now;
		1088	ev_rt_now = ev_time ();
		1089	return 1;
		1090	}
		1091	}
		1092
		1093	static void
		1094	time_update (EV_P)
		1095	{
		1096	int i;
		1097
		1098	#if EV_USE_MONOTONIC
		1099	if (expect_true (have_monotonic))
		1100	{
		1101	if (time_update_monotonic (EV_A))
586	{	1102	{
587	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1103	ev_tstamp odiff = rtmn_diff;
588		1104
589	if (fabs (diff) >= 1e-4)	1105	for (i = 4; --i; ) /* loop a few times, before making important decisions */
590	{	1106	{
591	ev_periodic_stop (w);	1107	rtmn_diff = ev_rt_now - mn_now;
592	ev_periodic_start (w);
593		1108
594	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1109	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1110	return; /* all is well */
		1111
		1112	ev_rt_now = ev_time ();
		1113	mn_now = get_clock ();
		1114	now_floor = mn_now;
595	}	1115	}
		1116
		1117	# if EV_PERIODICS
		1118	periodics_reschedule (EV_A);
		1119	# endif
		1120	/* no timer adjustment, as the monotonic clock doesn't jump */
		1121	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
596	}	1122	}
597	}	1123	}
598	}	1124	else
599		1125	#endif
600	static void	1126	{
601	time_update (void)
602	{
603	int i;
604
605	ev_now = ev_time ();	1127	ev_rt_now = ev_time ();
606		1128
607	if (have_monotonic)	1129	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	{	1130	{
613	now = get_clock ();	1131	#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);	1132	periodics_reschedule (EV_A);
		1133	#endif
630		1134
631	/* adjust timers. this is easy, as the offset is the same for all */	1135	/* adjust timers. this is easy, as the offset is the same for all */
632	for (i = 0; i < timercnt; ++i)	1136	for (i = 0; i < timercnt; ++i)
633	timers [i]->at += diff;	1137	((WT)timers [i])->at += ev_rt_now - mn_now;
634	}	1138	}
635		1139
636	now = ev_now;	1140	mn_now = ev_rt_now;
637	}	1141	}
638	}	1142	}
639		1143
640	int ev_loop_done;	1144	void
		1145	ev_ref (EV_P)
		1146	{
		1147	++activecnt;
		1148	}
641		1149
		1150	void
		1151	ev_unref (EV_P)
		1152	{
		1153	--activecnt;
		1154	}
		1155
		1156	static int loop_done;
		1157
		1158	void
642	void ev_loop (int flags)	1159	ev_loop (EV_P_ int flags)
643	{	1160	{
644	double block;	1161	double block;
645	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1162	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
646		1163
647	do	1164	do
648	{	1165	{
649	/* queue check watchers (and execute them) */	1166	/* queue check watchers (and execute them) */
650	if (preparecnt)	1167	if (expect_false (preparecnt))
651	{	1168	{
652	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1169	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
653	call_pending ();	1170	call_pending (EV_A);
654	}	1171	}
655		1172
		1173	/* we might have forked, so reify kernel state if necessary */
		1174	if (expect_false (postfork))
		1175	loop_fork (EV_A);
		1176
656	/* update fd-related kernel structures */	1177	/* update fd-related kernel structures */
657	fd_reify ();	1178	fd_reify (EV_A);
658		1179
659	/* calculate blocking time */	1180	/* calculate blocking time */
660		1181
661	/* we only need this for !monotonic clockor timers, but as we basically	1182	/* we only need this for !monotonic clock or timers, but as we basically
662	always have timers, we just calculate it always */	1183	always have timers, we just calculate it always */
		1184	#if EV_USE_MONOTONIC
		1185	if (expect_true (have_monotonic))
		1186	time_update_monotonic (EV_A);
		1187	else
		1188	#endif
		1189	{
663	ev_now = ev_time ();	1190	ev_rt_now = ev_time ();
		1191	mn_now = ev_rt_now;
		1192	}
664		1193
665	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1194	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
666	block = 0.;	1195	block = 0.;
667	else	1196	else
668	{	1197	{
669	block = MAX_BLOCKTIME;	1198	block = MAX_BLOCKTIME;
670		1199
671	if (timercnt)	1200	if (timercnt)
672	{	1201	{
673	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1202	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
674	if (block > to) block = to;	1203	if (block > to) block = to;
675	}	1204	}
676		1205
		1206	#if EV_PERIODICS
677	if (periodiccnt)	1207	if (periodiccnt)
678	{	1208	{
679	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1209	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
680	if (block > to) block = to;	1210	if (block > to) block = to;
681	}	1211	}
		1212	#endif
682		1213
683	if (block < 0.) block = 0.;	1214	if (block < 0.) block = 0.;
684	}	1215	}
685		1216
686	method_poll (block);	1217	method_poll (EV_A_ block);
687		1218
688	/* update ev_now, do magic */	1219	/* update ev_rt_now, do magic */
689	time_update ();	1220	time_update (EV_A);
690		1221
691	/* queue pending timers and reschedule them */	1222	/* queue pending timers and reschedule them */
692	timers_reify (); /* relative timers called last */	1223	timers_reify (EV_A); /* relative timers called last */
		1224	#if EV_PERIODICS
693	periodics_reify (); /* absolute timers called first */	1225	periodics_reify (EV_A); /* absolute timers called first */
		1226	#endif
694		1227
695	/* queue idle watchers unless io or timers are pending */	1228	/* queue idle watchers unless io or timers are pending */
696	if (!pendingcnt)	1229	if (idlecnt && !any_pending (EV_A))
697	queue_events ((W *)idles, idlecnt, EV_IDLE);	1230	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
698		1231
699	/* queue check watchers, to be executed first */	1232	/* queue check watchers, to be executed first */
700	if (checkcnt)	1233	if (checkcnt)
701	queue_events ((W *)checks, checkcnt, EV_CHECK);	1234	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
702		1235
703	call_pending ();	1236	call_pending (EV_A);
704	}	1237	}
705	while (!ev_loop_done);	1238	while (activecnt && !loop_done);
706		1239
707	if (ev_loop_done != 2)	1240	if (loop_done != 2)
708	ev_loop_done = 0;	1241	loop_done = 0;
		1242	}
		1243
		1244	void
		1245	ev_unloop (EV_P_ int how)
		1246	{
		1247	loop_done = how;
709	}	1248	}
710		1249
711	/*****************************************************************************/	1250	/*****************************************************************************/
712		1251
713	static void	1252	inline void
714	wlist_add (WL *head, WL elem)	1253	wlist_add (WL *head, WL elem)
715	{	1254	{
716	elem->next = *head;	1255	elem->next = *head;
717	*head = elem;	1256	*head = elem;
718	}	1257	}
719		1258
720	static void	1259	inline void
721	wlist_del (WL *head, WL elem)	1260	wlist_del (WL *head, WL elem)
722	{	1261	{
723	while (*head)	1262	while (*head)
724	{	1263	{
725	if (*head == elem)	1264	if (*head == elem)
…		…
730		1269
731	head = &(*head)->next;	1270	head = &(*head)->next;
732	}	1271	}
733	}	1272	}
734		1273
735	static void	1274	inline void
736	ev_clear (W w)	1275	ev_clear_pending (EV_P_ W w)
737	{	1276	{
738	if (w->pending)	1277	if (w->pending)
739	{	1278	{
740	pendings [w->pending - 1].w = 0;	1279	pendings [ABSPRI (w)][w->pending - 1].w = 0;
741	w->pending = 0;	1280	w->pending = 0;
742	}	1281	}
743	}	1282	}
744		1283
745	static void	1284	inline void
746	ev_start (W w, int active)	1285	ev_start (EV_P_ W w, int active)
747	{	1286	{
		1287	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1288	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1289
748	w->active = active;	1290	w->active = active;
		1291	ev_ref (EV_A);
749	}	1292	}
750		1293
751	static void	1294	inline void
752	ev_stop (W w)	1295	ev_stop (EV_P_ W w)
753	{	1296	{
		1297	ev_unref (EV_A);
754	w->active = 0;	1298	w->active = 0;
755	}	1299	}
756		1300
757	/*****************************************************************************/	1301	/*****************************************************************************/
758		1302
759	void	1303	void
760	ev_io_start (struct ev_io *w)	1304	ev_io_start (EV_P_ struct ev_io *w)
761	{	1305	{
		1306	int fd = w->fd;
		1307
762	if (ev_is_active (w))	1308	if (ev_is_active (w))
763	return;	1309	return;
764		1310
765	int fd = w->fd;	1311	assert (("ev_io_start called with negative fd", fd >= 0));
766		1312
767	ev_start ((W)w, 1);	1313	ev_start (EV_A_ (W)w, 1);
768	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1314	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
769	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1315	wlist_add ((WL *)&anfds[fd].head, (WL)w);
770		1316
771	fd_change (fd);	1317	fd_change (EV_A_ fd);
772	}	1318	}
773		1319
774	void	1320	void
775	ev_io_stop (struct ev_io *w)	1321	ev_io_stop (EV_P_ struct ev_io *w)
776	{	1322	{
777	ev_clear ((W)w);	1323	ev_clear_pending (EV_A_ (W)w);
778	if (!ev_is_active (w))	1324	if (!ev_is_active (w))
779	return;	1325	return;
780		1326
		1327	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1328
781	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1329	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
782	ev_stop ((W)w);	1330	ev_stop (EV_A_ (W)w);
783		1331
784	fd_change (w->fd);	1332	fd_change (EV_A_ w->fd);
785	}	1333	}
786		1334
787	void	1335	void
788	ev_timer_start (struct ev_timer *w)	1336	ev_timer_start (EV_P_ struct ev_timer *w)
789	{	1337	{
790	if (ev_is_active (w))	1338	if (ev_is_active (w))
791	return;	1339	return;
792		1340
793	w->at += now;	1341	((WT)w)->at += mn_now;
794		1342
795	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1343	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
796		1344
797	ev_start ((W)w, ++timercnt);	1345	ev_start (EV_A_ (W)w, ++timercnt);
798	array_needsize (timers, timermax, timercnt, );	1346	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
799	timers [timercnt - 1] = w;	1347	timers [timercnt - 1] = w;
800	upheap ((WT *)timers, timercnt - 1);	1348	upheap ((WT *)timers, timercnt - 1);
801	}
802		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1351	}
		1352
803	void	1353	void
804	ev_timer_stop (struct ev_timer *w)	1354	ev_timer_stop (EV_P_ struct ev_timer *w)
805	{	1355	{
806	ev_clear ((W)w);	1356	ev_clear_pending (EV_A_ (W)w);
807	if (!ev_is_active (w))	1357	if (!ev_is_active (w))
808	return;	1358	return;
809		1359
		1360	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1361
810	if (w->active < timercnt--)	1362	if (((W)w)->active < timercnt--)
811	{	1363	{
812	timers [w->active - 1] = timers [timercnt];	1364	timers [((W)w)->active - 1] = timers [timercnt];
813	downheap ((WT *)timers, timercnt, w->active - 1);	1365	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
814	}	1366	}
815		1367
816	w->at = w->repeat;	1368	((WT)w)->at -= mn_now;
817		1369
818	ev_stop ((W)w);	1370	ev_stop (EV_A_ (W)w);
819	}	1371	}
820		1372
821	void	1373	void
822	ev_timer_again (struct ev_timer *w)	1374	ev_timer_again (EV_P_ struct ev_timer *w)
823	{	1375	{
824	if (ev_is_active (w))	1376	if (ev_is_active (w))
825	{	1377	{
826	if (w->repeat)	1378	if (w->repeat)
827	{	1379	{
828	w->at = now + w->repeat;	1380	((WT)w)->at = mn_now + w->repeat;
829	downheap ((WT *)timers, timercnt, w->active - 1);	1381	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
830	}	1382	}
831	else	1383	else
832	ev_timer_stop (w);	1384	ev_timer_stop (EV_A_ w);
833	}	1385	}
834	else if (w->repeat)	1386	else if (w->repeat)
835	ev_timer_start (w);	1387	ev_timer_start (EV_A_ w);
836	}	1388	}
837		1389
		1390	#if EV_PERIODICS
838	void	1391	void
839	ev_periodic_start (struct ev_periodic *w)	1392	ev_periodic_start (EV_P_ struct ev_periodic *w)
840	{	1393	{
841	if (ev_is_active (w))	1394	if (ev_is_active (w))
842	return;	1395	return;
843		1396
844	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1397	if (w->reschedule_cb)
845		1398	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1399	else if (w->interval)
		1400	{
		1401	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 */	1402	/* 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;	1403	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1404	}
849		1405
850	ev_start ((W)w, ++periodiccnt);	1406	ev_start (EV_A_ (W)w, ++periodiccnt);
851	array_needsize (periodics, periodicmax, periodiccnt, );	1407	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
852	periodics [periodiccnt - 1] = w;	1408	periodics [periodiccnt - 1] = w;
853	upheap ((WT *)periodics, periodiccnt - 1);	1409	upheap ((WT *)periodics, periodiccnt - 1);
854	}
855		1410
		1411	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1412	}
		1413
856	void	1414	void
857	ev_periodic_stop (struct ev_periodic *w)	1415	ev_periodic_stop (EV_P_ struct ev_periodic *w)
858	{	1416	{
859	ev_clear ((W)w);	1417	ev_clear_pending (EV_A_ (W)w);
860	if (!ev_is_active (w))	1418	if (!ev_is_active (w))
861	return;	1419	return;
862		1420
		1421	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1422
863	if (w->active < periodiccnt--)	1423	if (((W)w)->active < periodiccnt--)
864	{	1424	{
865	periodics [w->active - 1] = periodics [periodiccnt];	1425	periodics [((W)w)->active - 1] = periodics [periodiccnt];
866	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1426	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
867	}	1427	}
868		1428
869	ev_stop ((W)w);	1429	ev_stop (EV_A_ (W)w);
870	}	1430	}
871		1431
872	void	1432	void
		1433	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1434	{
		1435	/* TODO: use adjustheap and recalculation */
		1436	ev_periodic_stop (EV_A_ w);
		1437	ev_periodic_start (EV_A_ w);
		1438	}
		1439	#endif
		1440
		1441	void
873	ev_signal_start (struct ev_signal *w)	1442	ev_idle_start (EV_P_ struct ev_idle *w)
874	{	1443	{
875	if (ev_is_active (w))	1444	if (ev_is_active (w))
876	return;	1445	return;
877		1446
		1447	ev_start (EV_A_ (W)w, ++idlecnt);
		1448	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1449	idles [idlecnt - 1] = w;
		1450	}
		1451
		1452	void
		1453	ev_idle_stop (EV_P_ struct ev_idle *w)
		1454	{
		1455	ev_clear_pending (EV_A_ (W)w);
		1456	if (!ev_is_active (w))
		1457	return;
		1458
		1459	idles [((W)w)->active - 1] = idles [--idlecnt];
		1460	ev_stop (EV_A_ (W)w);
		1461	}
		1462
		1463	void
		1464	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1465	{
		1466	if (ev_is_active (w))
		1467	return;
		1468
		1469	ev_start (EV_A_ (W)w, ++preparecnt);
		1470	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1471	prepares [preparecnt - 1] = w;
		1472	}
		1473
		1474	void
		1475	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1476	{
		1477	ev_clear_pending (EV_A_ (W)w);
		1478	if (!ev_is_active (w))
		1479	return;
		1480
		1481	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1482	ev_stop (EV_A_ (W)w);
		1483	}
		1484
		1485	void
		1486	ev_check_start (EV_P_ struct ev_check *w)
		1487	{
		1488	if (ev_is_active (w))
		1489	return;
		1490
		1491	ev_start (EV_A_ (W)w, ++checkcnt);
		1492	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1493	checks [checkcnt - 1] = w;
		1494	}
		1495
		1496	void
		1497	ev_check_stop (EV_P_ struct ev_check *w)
		1498	{
		1499	ev_clear_pending (EV_A_ (W)w);
		1500	if (!ev_is_active (w))
		1501	return;
		1502
		1503	checks [((W)w)->active - 1] = checks [--checkcnt];
		1504	ev_stop (EV_A_ (W)w);
		1505	}
		1506
		1507	#ifndef SA_RESTART
		1508	# define SA_RESTART 0
		1509	#endif
		1510
		1511	void
		1512	ev_signal_start (EV_P_ struct ev_signal *w)
		1513	{
		1514	#if EV_MULTIPLICITY
		1515	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1516	#endif
		1517	if (ev_is_active (w))
		1518	return;
		1519
		1520	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1521
878	ev_start ((W)w, 1);	1522	ev_start (EV_A_ (W)w, 1);
879	array_needsize (signals, signalmax, w->signum, signals_init);	1523	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
880	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1524	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
881		1525
882	if (!w->next)	1526	if (!((WL)w)->next)
883	{	1527	{
		1528	#if _WIN32
		1529	signal (w->signum, sighandler);
		1530	#else
884	struct sigaction sa;	1531	struct sigaction sa;
885	sa.sa_handler = sighandler;	1532	sa.sa_handler = sighandler;
886	sigfillset (&sa.sa_mask);	1533	sigfillset (&sa.sa_mask);
887	sa.sa_flags = 0;	1534	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
888	sigaction (w->signum, &sa, 0);	1535	sigaction (w->signum, &sa, 0);
		1536	#endif
889	}	1537	}
890	}	1538	}
891		1539
892	void	1540	void
893	ev_signal_stop (struct ev_signal *w)	1541	ev_signal_stop (EV_P_ struct ev_signal *w)
894	{	1542	{
895	ev_clear ((W)w);	1543	ev_clear_pending (EV_A_ (W)w);
896	if (!ev_is_active (w))	1544	if (!ev_is_active (w))
897	return;	1545	return;
898		1546
899	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1547	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
900	ev_stop ((W)w);	1548	ev_stop (EV_A_ (W)w);
901		1549
902	if (!signals [w->signum - 1].head)	1550	if (!signals [w->signum - 1].head)
903	signal (w->signum, SIG_DFL);	1551	signal (w->signum, SIG_DFL);
904	}	1552	}
905		1553
906	void	1554	void
907	ev_idle_start (struct ev_idle *w)	1555	ev_child_start (EV_P_ struct ev_child *w)
908	{	1556	{
		1557	#if EV_MULTIPLICITY
		1558	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1559	#endif
909	if (ev_is_active (w))	1560	if (ev_is_active (w))
910	return;	1561	return;
911		1562
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);	1563	ev_start (EV_A_ (W)w, 1);
979	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1564	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	}	1565	}
981		1566
982	void	1567	void
983	ev_child_stop (struct ev_child *w)	1568	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1569	{
985	ev_clear ((W)w);	1570	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1571	if (!ev_is_active (w))
987	return;	1572	return;
988		1573
989	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1574	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	ev_stop ((W)w);	1575	ev_stop (EV_A_ (W)w);
991	}	1576	}
992		1577
993	/*****************************************************************************/	1578	/*****************************************************************************/
994		1579
995	struct ev_once	1580	struct ev_once
…		…
999	void (cb)(int revents, void arg);	1584	void (cb)(int revents, void arg);
1000	void *arg;	1585	void *arg;
1001	};	1586	};
1002		1587
1003	static void	1588	static void
1004	once_cb (struct ev_once *once, int revents)	1589	once_cb (EV_P_ struct ev_once *once, int revents)
1005	{	1590	{
1006	void (cb)(int revents, void arg) = once->cb;	1591	void (cb)(int revents, void arg) = once->cb;
1007	void *arg = once->arg;	1592	void *arg = once->arg;
1008		1593
1009	ev_io_stop (&once->io);	1594	ev_io_stop (EV_A_ &once->io);
1010	ev_timer_stop (&once->to);	1595	ev_timer_stop (EV_A_ &once->to);
1011	free (once);	1596	ev_free (once);
1012		1597
1013	cb (revents, arg);	1598	cb (revents, arg);
1014	}	1599	}
1015		1600
1016	static void	1601	static void
1017	once_cb_io (struct ev_io *w, int revents)	1602	once_cb_io (EV_P_ struct ev_io *w, int revents)
1018	{	1603	{
1019	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1604	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1020	}	1605	}
1021		1606
1022	static void	1607	static void
1023	once_cb_to (struct ev_timer *w, int revents)	1608	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1024	{	1609	{
1025	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1610	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1026	}	1611	}
1027		1612
1028	void	1613	void
1029	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1614	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1030	{	1615	{
1031	struct ev_once *once = malloc (sizeof (struct ev_once));	1616	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1032		1617
1033	if (!once)	1618	if (!once)
1034	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1619	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1035	else	1620	else
1036	{	1621	{
1037	once->cb = cb;	1622	once->cb = cb;
1038	once->arg = arg;	1623	once->arg = arg;
1039		1624
1040	ev_watcher_init (&once->io, once_cb_io);	1625	ev_init (&once->io, once_cb_io);
1041	if (fd >= 0)	1626	if (fd >= 0)
1042	{	1627	{
1043	ev_io_set (&once->io, fd, events);	1628	ev_io_set (&once->io, fd, events);
1044	ev_io_start (&once->io);	1629	ev_io_start (EV_A_ &once->io);
1045	}	1630	}
1046		1631
1047	ev_watcher_init (&once->to, once_cb_to);	1632	ev_init (&once->to, once_cb_to);
1048	if (timeout >= 0.)	1633	if (timeout >= 0.)
1049	{	1634	{
1050	ev_timer_set (&once->to, timeout, 0.);	1635	ev_timer_set (&once->to, timeout, 0.);
1051	ev_timer_start (&once->to);	1636	ev_timer_start (EV_A_ &once->to);
1052	}	1637	}
1053	}	1638	}
1054	}	1639	}
1055		1640
1056	/*****************************************************************************/	1641	#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	}	1642	}
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	1643	#endif
1112		1644
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 1.108 by root, Mon Nov 12 05:40:55 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 1.108 by root, Mon Nov 12 05:40:55 2007 UTC