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

Comparing libev/ev.c (file contents):
Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs.
Revision 1.107 by root, Mon Nov 12 01:20:25 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
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	unsigned char events;
145	unsigned char reify;
146	} ANFD;
147
148	static ANFD *anfds;
149	static int anfdmax;
150		344
151	static void	345	static void
152	anfds_init (ANFD *base, int count)	346	anfds_init (ANFD *base, int count)
153	{	347	{
154	while (count--)	348	while (count--)
…		…
159		353
160	++base;	354	++base;
161	}	355	}
162	}	356	}
163		357
164	typedef struct	358	void
		359	ev_feed_event (EV_P_ void *w, int revents)
165	{	360	{
166	W w;	361	W w_ = (W)w;
167	int events;
168	} ANPENDING;
169		362
170	static ANPENDING *pendings;
171	static int pendingmax, pendingcnt;
172
173	static void
174	event (W w, int events)
175	{
176	if (w->pending)	363	if (w_->pending)
177	{	364	{
178	pendings [w->pending - 1].events \|= events;	365	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
179	return;	366	return;
180	}	367	}
181		368
182	w->pending = ++pendingcnt;	369	w_->pending = ++pendingcnt [ABSPRI (w_)];
183	array_needsize (pendings, pendingmax, pendingcnt, );	370	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
184	pendings [pendingcnt - 1].w = w;	371	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
185	pendings [pendingcnt - 1].events = events;	372	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
186	}	373	}
187		374
188	static void	375	static void
189	queue_events (W *events, int eventcnt, int type)	376	queue_events (EV_P_ W *events, int eventcnt, int type)
190	{	377	{
191	int i;	378	int i;
192		379
193	for (i = 0; i < eventcnt; ++i)	380	for (i = 0; i < eventcnt; ++i)
194	event (events [i], type);	381	ev_feed_event (EV_A_ events [i], type);
195	}	382	}
196		383
197	static void	384	inline void
198	fd_event (int fd, int events)	385	fd_event (EV_P_ int fd, int revents)
199	{	386	{
200	ANFD *anfd = anfds + fd;	387	ANFD *anfd = anfds + fd;
201	struct ev_io *w;	388	struct ev_io *w;
202		389
203	for (w = anfd->head; w; w = w->next)	390	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
204	{	391	{
205	int ev = w->events & events;	392	int ev = w->events & revents;
206		393
207	if (ev)	394	if (ev)
208	event ((W)w, ev);	395	ev_feed_event (EV_A_ (W)w, ev);
209	}	396	}
		397	}
		398
		399	void
		400	ev_feed_fd_event (EV_P_ int fd, int revents)
		401	{
		402	fd_event (EV_A_ fd, revents);
210	}	403	}
211		404
212	/*****************************************************************************/	405	/*****************************************************************************/
213		406
214	static int *fdchanges;
215	static int fdchangemax, fdchangecnt;
216
217	static void	407	static void
218	fd_reify (void)	408	fd_reify (EV_P)
219	{	409	{
220	int i;	410	int i;
221		411
222	for (i = 0; i < fdchangecnt; ++i)	412	for (i = 0; i < fdchangecnt; ++i)
223	{	413	{
…		…
225	ANFD *anfd = anfds + fd;	415	ANFD *anfd = anfds + fd;
226	struct ev_io *w;	416	struct ev_io *w;
227		417
228	int events = 0;	418	int events = 0;
229		419
230	for (w = anfd->head; w; w = w->next)	420	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
231	events \|= w->events;	421	events \|= w->events;
232		422
		423	#if EV_SELECT_IS_WINSOCKET
		424	if (events)
		425	{
		426	unsigned long argp;
		427	anfd->handle = _get_osfhandle (fd);
		428	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		429	}
		430	#endif
		431
233	anfd->reify = 0;	432	anfd->reify = 0;
234		433
235	if (anfd->events != events)
236	{
237	method_modify (fd, anfd->events, events);	434	method_modify (EV_A_ fd, anfd->events, events);
238	anfd->events = events;	435	anfd->events = events;
239	}
240	}	436	}
241		437
242	fdchangecnt = 0;	438	fdchangecnt = 0;
243	}	439	}
244		440
245	static void	441	static void
246	fd_change (int fd)	442	fd_change (EV_P_ int fd)
247	{	443	{
248	if (anfds [fd].reify \|\| fdchangecnt < 0)	444	if (anfds [fd].reify)
249	return;	445	return;
250		446
251	anfds [fd].reify = 1;	447	anfds [fd].reify = 1;
252		448
253	++fdchangecnt;	449	++fdchangecnt;
254	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	450	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
255	fdchanges [fdchangecnt - 1] = fd;	451	fdchanges [fdchangecnt - 1] = fd;
256	}	452	}
257		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
258	/* called on EBADF to verify fds */	476	/* called on EBADF to verify fds */
259	static void	477	static void
260	fd_recheck (void)	478	fd_ebadf (EV_P)
261	{	479	{
262	int fd;	480	int fd;
263		481
264	for (fd = 0; fd < anfdmax; ++fd)	482	for (fd = 0; fd < anfdmax; ++fd)
265	if (anfds [fd].events)	483	if (anfds [fd].events)
266	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	484	if (!fd_valid (fd) == -1 && errno == EBADF)
267	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)
268	{	496	{
269	ev_io_stop (anfds [fd].head);	497	fd_kill (EV_A_ fd);
270	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	498	return;
271	}	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	}
272	}	515	}
273		516
274	/*****************************************************************************/	517	/*****************************************************************************/
275		518
276	static struct ev_timer **timers;
277	static int timermax, timercnt;
278
279	static struct ev_periodic **periodics;
280	static int periodicmax, periodiccnt;
281
282	static void	519	static void
283	upheap (WT *timers, int k)	520	upheap (WT *heap, int k)
284	{	521	{
285	WT w = timers [k];	522	WT w = heap [k];
286		523
287	while (k && timers [k >> 1]->at > w->at)	524	while (k && heap [k >> 1]->at > w->at)
288	{	525	{
289	timers [k] = timers [k >> 1];	526	heap [k] = heap [k >> 1];
290	timers [k]->active = k + 1;	527	((W)heap [k])->active = k + 1;
291	k >>= 1;	528	k >>= 1;
292	}	529	}
293		530
294	timers [k] = w;	531	heap [k] = w;
295	timers [k]->active = k + 1;	532	((W)heap [k])->active = k + 1;
296		533
297	}	534	}
298		535
299	static void	536	static void
300	downheap (WT *timers, int N, int k)	537	downheap (WT *heap, int N, int k)
301	{	538	{
302	WT w = timers [k];	539	WT w = heap [k];
303		540
304	while (k < (N >> 1))	541	while (k < (N >> 1))
305	{	542	{
306	int j = k << 1;	543	int j = k << 1;
307		544
308	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	545	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
309	++j;	546	++j;
310		547
311	if (w->at <= timers [j]->at)	548	if (w->at <= heap [j]->at)
312	break;	549	break;
313		550
314	timers [k] = timers [j];	551	heap [k] = heap [j];
315	timers [k]->active = k + 1;	552	((W)heap [k])->active = k + 1;
316	k = j;	553	k = j;
317	}	554	}
318		555
319	timers [k] = w;	556	heap [k] = w;
320	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);
321	}	565	}
322		566
323	/*****************************************************************************/	567	/*****************************************************************************/
324		568
325	typedef struct	569	typedef struct
326	{	570	{
327	struct ev_signal *head;	571	WL head;
328	sig_atomic_t volatile gotsig;	572	sig_atomic_t volatile gotsig;
329	} ANSIG;	573	} ANSIG;
330		574
331	static ANSIG *signals;	575	static ANSIG *signals;
332	static int signalmax;	576	static int signalmax;
…		…
348	}	592	}
349		593
350	static void	594	static void
351	sighandler (int signum)	595	sighandler (int signum)
352	{	596	{
		597	#if _WIN32
		598	signal (signum, sighandler);
		599	#endif
		600
353	signals [signum - 1].gotsig = 1;	601	signals [signum - 1].gotsig = 1;
354		602
355	if (!gotsig)	603	if (!gotsig)
356	{	604	{
		605	int old_errno = errno;
357	gotsig = 1;	606	gotsig = 1;
358	write (sigpipe [1], &signum, 1);	607	write (sigpipe [1], &signum, 1);
		608	errno = old_errno;
359	}	609	}
360	}	610	}
361		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
362	static void	632	static void
363	sigcb (struct ev_io *iow, int revents)	633	sigcb (EV_P_ struct ev_io *iow, int revents)
364	{	634	{
365	struct ev_signal *w;
366	int sig;	635	int signum;
367		636
368	read (sigpipe [0], &revents, 1);	637	read (sigpipe [0], &revents, 1);
369	gotsig = 0;	638	gotsig = 0;
370		639
371	for (sig = signalmax; sig--; )	640	for (signum = signalmax; signum--; )
372	if (signals [sig].gotsig)	641	if (signals [signum].gotsig)
373	{	642	ev_feed_signal_event (EV_A_ signum + 1);
374	signals [sig].gotsig = 0;
375
376	for (w = signals [sig].head; w; w = w->next)
377	event ((W)w, EV_SIGNAL);
378	}
379	}	643	}
380		644
381	static void	645	inline void
382	siginit (void)	646	fd_intern (int fd)
383	{	647	{
		648	#ifdef _WIN32
		649	int arg = 1;
		650	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		651	#else
384	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	652	fcntl (fd, F_SETFD, FD_CLOEXEC);
385	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
386
387	/* rather than sort out wether we really need nb, set it */
388	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	653	fcntl (fd, F_SETFL, O_NONBLOCK);
389	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]);
390		662
391	ev_io_set (&sigev, sigpipe [0], EV_READ);	663	ev_io_set (&sigev, sigpipe [0], EV_READ);
392	ev_io_start (&sigev);	664	ev_io_start (EV_A_ &sigev);
		665	ev_unref (EV_A); /* child watcher should not keep loop alive */
393	}	666	}
394		667
395	/*****************************************************************************/	668	/*****************************************************************************/
396		669
397	static struct ev_idle **idles;
398	static int idlemax, idlecnt;
399
400	static struct ev_prepare **prepares;
401	static int preparemax, preparecnt;
402
403	static struct ev_check **checks;
404	static int checkmax, checkcnt;
405
406	/*****************************************************************************/
407
408	static struct ev_child *childs [PID_HASHSIZE];	670	static struct ev_child *childs [PID_HASHSIZE];
		671
		672	#ifndef _WIN32
		673
409	static struct ev_signal childev;	674	static struct ev_signal childev;
410		675
411	#ifndef WCONTINUED	676	#ifndef WCONTINUED
412	# define WCONTINUED 0	677	# define WCONTINUED 0
413	#endif	678	#endif
414		679
415	static void	680	static void
416	childcb (struct ev_signal *sw, int revents)	681	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
417	{	682	{
418	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	{
419	int pid, status;	698	int pid, status;
420		699
421	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	700	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
422	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	701	{
423	if (w->pid == pid \|\| w->pid == -1)	702	/* make sure we are called again until all childs have been reaped */
424	{	703	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
425	w->status = status;	704
426	event ((W)w, EV_CHILD);	705	child_reap (EV_A_ sw, pid, pid, status);
427	}	706	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		707	}
428	}	708	}
		709
		710	#endif
429		711
430	/*****************************************************************************/	712	/*****************************************************************************/
431		713
		714	#if EV_USE_KQUEUE
		715	# include "ev_kqueue.c"
		716	#endif
432	#if EV_USE_EPOLL	717	#if EV_USE_EPOLL
433	# include "ev_epoll.c"	718	# include "ev_epoll.c"
434	#endif	719	#endif
		720	#if EV_USE_POLL
		721	# include "ev_poll.c"
		722	#endif
435	#if EV_USE_SELECT	723	#if EV_USE_SELECT
436	# include "ev_select.c"	724	# include "ev_select.c"
437	#endif	725	#endif
438		726
439	int	727	int
…		…
446	ev_version_minor (void)	734	ev_version_minor (void)
447	{	735	{
448	return EV_VERSION_MINOR;	736	return EV_VERSION_MINOR;
449	}	737	}
450		738
451	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)
452	{	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_ int methods)
		759	{
453	if (!ev_method)	760	if (!method)
454	{	761	{
455	#if EV_USE_MONOTONIC	762	#if EV_USE_MONOTONIC
456	{	763	{
457	struct timespec ts;	764	struct timespec ts;
458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	765	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
459	have_monotonic = 1;	766	have_monotonic = 1;
460	}	767	}
461	#endif	768	#endif
462		769
463	ev_now = ev_time ();	770	ev_rt_now = ev_time ();
464	now = get_clock ();	771	mn_now = get_clock ();
		772	now_floor = mn_now;
465	diff = ev_now - now;	773	rtmn_diff = ev_rt_now - mn_now;
466		774
467	if (pipe (sigpipe))	775	if (methods == EVMETHOD_AUTO)
468	return 0;	776	if (!enable_secure () && getenv ("LIBEV_METHODS"))
469		777	methods = atoi (getenv ("LIBEV_METHODS"));
		778	else
470	ev_method = EVMETHOD_NONE;	779	methods = EVMETHOD_ANY;
		780
		781	method = 0;
		782	#if EV_USE_KQUEUE
		783	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		784	#endif
471	#if EV_USE_EPOLL	785	#if EV_USE_EPOLL
472	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	786	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		787	#endif
		788	#if EV_USE_POLL
		789	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
473	#endif	790	#endif
474	#if EV_USE_SELECT	791	#if EV_USE_SELECT
475	if (ev_method == EVMETHOD_NONE) select_init (flags);	792	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
476	#endif	793	#endif
477		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 (int methods)
		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_ methods);
		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 (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
478	if (ev_method)	914	if (ev_method (EV_A))
479	{	915	{
480	ev_watcher_init (&sigev, sigcb);
481	siginit ();	916	siginit (EV_A);
482		917
		918	#ifndef _WIN32
483	ev_signal_init (&childev, childcb, SIGCHLD);	919	ev_signal_init (&childev, childcb, SIGCHLD);
		920	ev_set_priority (&childev, EV_MAXPRI);
484	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
485	}	924	}
		925	else
		926	default_loop = 0;
486	}	927	}
487		928
488	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;
489	}	962	}
490		963
491	/*****************************************************************************/	964	/*****************************************************************************/
492		965
493	void
494	ev_fork_prepare (void)
495	{
496	/* nop */
497	}
498
499	void
500	ev_fork_parent (void)
501	{
502	/* nop */
503	}
504
505	void
506	ev_fork_child (void)
507	{
508	#if EV_USE_EPOLL
509	if (ev_method == EVMETHOD_EPOLL)
510	epoll_postfork_child ();
511	#endif
512
513	ev_io_stop (&sigev);
514	close (sigpipe [0]);
515	close (sigpipe [1]);
516	pipe (sigpipe);
517	siginit ();
518	}
519
520	/*****************************************************************************/
521
522	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
523	call_pending (void)	979	call_pending (EV_P)
524	{	980	{
		981	int pri;
		982
		983	for (pri = NUMPRI; pri--; )
525	while (pendingcnt)	984	while (pendingcnt [pri])
526	{	985	{
527	ANPENDING *p = pendings + --pendingcnt;	986	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
528		987
529	if (p->w)	988	if (p->w)
530	{	989	{
531	p->w->pending = 0;	990	p->w->pending = 0;
532	p->w->cb (p->w, p->events);	991	EV_CB_INVOKE (p->w, p->events);
533	}	992	}
534	}	993	}
535	}	994	}
536		995
537	static void	996	static void
538	timers_reify (void)	997	timers_reify (EV_P)
539	{	998	{
540	while (timercnt && timers [0]->at <= now)	999	while (timercnt && ((WT)timers [0])->at <= mn_now)
541	{	1000	{
542	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)));
543		1004
544	/* first reschedule or stop timer */	1005	/* first reschedule or stop timer */
545	if (w->repeat)	1006	if (w->repeat)
546	{	1007	{
547	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1008	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1009
548	w->at = now + w->repeat;	1010	((WT)w)->at += w->repeat;
		1011	if (((WT)w)->at < mn_now)
		1012	((WT)w)->at = mn_now;
		1013
549	downheap ((WT *)timers, timercnt, 0);	1014	downheap ((WT *)timers, timercnt, 0);
550	}	1015	}
551	else	1016	else
552	ev_timer_stop (w); /* nonrepeating: stop timer */	1017	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
553		1018
554	event ((W)w, EV_TIMEOUT);	1019	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
555	}	1020	}
556	}	1021	}
557		1022
		1023	#if EV_PERIODICS
558	static void	1024	static void
559	periodics_reify (void)	1025	periodics_reify (EV_P)
560	{	1026	{
561	while (periodiccnt && periodics [0]->at <= ev_now)	1027	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
562	{	1028	{
563	struct ev_periodic *w = periodics [0];	1029	struct ev_periodic *w = periodics [0];
564		1030
		1031	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1032
565	/* first reschedule or stop timer */	1033	/* first reschedule or stop timer */
566	if (w->interval)	1034	if (w->reschedule_cb)
567	{	1035	{
		1036	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1037
		1038	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1039	downheap ((WT *)periodics, periodiccnt, 0);
		1040	}
		1041	else if (w->interval)
		1042	{
568	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1043	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
569	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1044	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
570	downheap ((WT *)periodics, periodiccnt, 0);	1045	downheap ((WT *)periodics, periodiccnt, 0);
571	}	1046	}
572	else	1047	else
573	ev_periodic_stop (w); /* nonrepeating: stop timer */	1048	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
574		1049
575	event ((W)w, EV_PERIODIC);	1050	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
576	}	1051	}
577	}	1052	}
578		1053
579	static void	1054	static void
580	periodics_reschedule (ev_tstamp diff)	1055	periodics_reschedule (EV_P)
581	{	1056	{
582	int i;	1057	int i;
583		1058
584	/* adjust periodics after time jump */	1059	/* adjust periodics after time jump */
585	for (i = 0; i < periodiccnt; ++i)	1060	for (i = 0; i < periodiccnt; ++i)
586	{	1061	{
587	struct ev_periodic *w = periodics [i];	1062	struct ev_periodic *w = periodics [i];
588		1063
		1064	if (w->reschedule_cb)
		1065	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
589	if (w->interval)	1066	else if (w->interval)
		1067	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1068	}
		1069
		1070	/* now rebuild the heap */
		1071	for (i = periodiccnt >> 1; i--; )
		1072	downheap ((WT *)periodics, periodiccnt, i);
		1073	}
		1074	#endif
		1075
		1076	inline int
		1077	time_update_monotonic (EV_P)
		1078	{
		1079	mn_now = get_clock ();
		1080
		1081	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1082	{
		1083	ev_rt_now = rtmn_diff + mn_now;
		1084	return 0;
		1085	}
		1086	else
		1087	{
		1088	now_floor = mn_now;
		1089	ev_rt_now = ev_time ();
		1090	return 1;
		1091	}
		1092	}
		1093
		1094	static void
		1095	time_update (EV_P)
		1096	{
		1097	int i;
		1098
		1099	#if EV_USE_MONOTONIC
		1100	if (expect_true (have_monotonic))
		1101	{
		1102	if (time_update_monotonic (EV_A))
590	{	1103	{
591	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1104	ev_tstamp odiff = rtmn_diff;
592		1105
593	if (fabs (diff) >= 1e-4)	1106	for (i = 4; --i; ) /* loop a few times, before making important decisions */
594	{	1107	{
595	ev_periodic_stop (w);	1108	rtmn_diff = ev_rt_now - mn_now;
596	ev_periodic_start (w);
597		1109
598	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1110	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1111	return; /* all is well */
		1112
		1113	ev_rt_now = ev_time ();
		1114	mn_now = get_clock ();
		1115	now_floor = mn_now;
599	}	1116	}
		1117
		1118	# if EV_PERIODICS
		1119	periodics_reschedule (EV_A);
		1120	# endif
		1121	/* no timer adjustment, as the monotonic clock doesn't jump */
		1122	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
600	}	1123	}
601	}	1124	}
602	}	1125	else
603		1126	#endif
604	static void	1127	{
605	time_update (void)
606	{
607	int i;
608
609	ev_now = ev_time ();	1128	ev_rt_now = ev_time ();
610		1129
611	if (have_monotonic)	1130	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
612	{
613	ev_tstamp odiff = diff;
614
615	for (i = 4; --i; ) /* loop a few times, before making important decisions */
616	{	1131	{
617	now = get_clock ();	1132	#if EV_PERIODICS
618	diff = ev_now - now;
619
620	if (fabs (odiff - diff) < MIN_TIMEJUMP)
621	return; /* all is well */
622
623	ev_now = ev_time ();
624	}
625
626	periodics_reschedule (diff - odiff);
627	/* no timer adjustment, as the monotonic clock doesn't jump */
628	}
629	else
630	{
631	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
632	{
633	periodics_reschedule (ev_now - now);	1133	periodics_reschedule (EV_A);
		1134	#endif
634		1135
635	/* adjust timers. this is easy, as the offset is the same for all */	1136	/* adjust timers. this is easy, as the offset is the same for all */
636	for (i = 0; i < timercnt; ++i)	1137	for (i = 0; i < timercnt; ++i)
637	timers [i]->at += diff;	1138	((WT)timers [i])->at += ev_rt_now - mn_now;
638	}	1139	}
639		1140
640	now = ev_now;	1141	mn_now = ev_rt_now;
641	}	1142	}
642	}	1143	}
643		1144
644	int ev_loop_done;	1145	void
		1146	ev_ref (EV_P)
		1147	{
		1148	++activecnt;
		1149	}
645		1150
		1151	void
		1152	ev_unref (EV_P)
		1153	{
		1154	--activecnt;
		1155	}
		1156
		1157	static int loop_done;
		1158
		1159	void
646	void ev_loop (int flags)	1160	ev_loop (EV_P_ int flags)
647	{	1161	{
648	double block;	1162	double block;
649	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1163	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
650		1164
651	do	1165	do
652	{	1166	{
653	/* queue check watchers (and execute them) */	1167	/* queue check watchers (and execute them) */
654	if (preparecnt)	1168	if (expect_false (preparecnt))
655	{	1169	{
656	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1170	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
657	call_pending ();	1171	call_pending (EV_A);
658	}	1172	}
659		1173
		1174	/* we might have forked, so reify kernel state if necessary */
		1175	if (expect_false (postfork))
		1176	loop_fork (EV_A);
		1177
660	/* update fd-related kernel structures */	1178	/* update fd-related kernel structures */
661	fd_reify ();	1179	fd_reify (EV_A);
662		1180
663	/* calculate blocking time */	1181	/* calculate blocking time */
664		1182
665	/* we only need this for !monotonic clockor timers, but as we basically	1183	/* we only need this for !monotonic clock or timers, but as we basically
666	always have timers, we just calculate it always */	1184	always have timers, we just calculate it always */
		1185	#if EV_USE_MONOTONIC
		1186	if (expect_true (have_monotonic))
		1187	time_update_monotonic (EV_A);
		1188	else
		1189	#endif
		1190	{
667	ev_now = ev_time ();	1191	ev_rt_now = ev_time ();
		1192	mn_now = ev_rt_now;
		1193	}
668		1194
669	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1195	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
670	block = 0.;	1196	block = 0.;
671	else	1197	else
672	{	1198	{
673	block = MAX_BLOCKTIME;	1199	block = MAX_BLOCKTIME;
674		1200
675	if (timercnt)	1201	if (timercnt)
676	{	1202	{
677	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1203	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
678	if (block > to) block = to;	1204	if (block > to) block = to;
679	}	1205	}
680		1206
		1207	#if EV_PERIODICS
681	if (periodiccnt)	1208	if (periodiccnt)
682	{	1209	{
683	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1210	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
684	if (block > to) block = to;	1211	if (block > to) block = to;
685	}	1212	}
		1213	#endif
686		1214
687	if (block < 0.) block = 0.;	1215	if (block < 0.) block = 0.;
688	}	1216	}
689		1217
690	method_poll (block);	1218	method_poll (EV_A_ block);
691		1219
692	/* update ev_now, do magic */	1220	/* update ev_rt_now, do magic */
693	time_update ();	1221	time_update (EV_A);
694		1222
695	/* queue pending timers and reschedule them */	1223	/* queue pending timers and reschedule them */
696	timers_reify (); /* relative timers called last */	1224	timers_reify (EV_A); /* relative timers called last */
		1225	#if EV_PERIODICS
697	periodics_reify (); /* absolute timers called first */	1226	periodics_reify (EV_A); /* absolute timers called first */
		1227	#endif
698		1228
699	/* queue idle watchers unless io or timers are pending */	1229	/* queue idle watchers unless io or timers are pending */
700	if (!pendingcnt)	1230	if (idlecnt && !any_pending (EV_A))
701	queue_events ((W *)idles, idlecnt, EV_IDLE);	1231	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
702		1232
703	/* queue check watchers, to be executed first */	1233	/* queue check watchers, to be executed first */
704	if (checkcnt)	1234	if (checkcnt)
705	queue_events ((W *)checks, checkcnt, EV_CHECK);	1235	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
706		1236
707	call_pending ();	1237	call_pending (EV_A);
708	}	1238	}
709	while (!ev_loop_done);	1239	while (activecnt && !loop_done);
710		1240
711	if (ev_loop_done != 2)	1241	if (loop_done != 2)
712	ev_loop_done = 0;	1242	loop_done = 0;
		1243	}
		1244
		1245	void
		1246	ev_unloop (EV_P_ int how)
		1247	{
		1248	loop_done = how;
713	}	1249	}
714		1250
715	/*****************************************************************************/	1251	/*****************************************************************************/
716		1252
717	static void	1253	inline void
718	wlist_add (WL *head, WL elem)	1254	wlist_add (WL *head, WL elem)
719	{	1255	{
720	elem->next = *head;	1256	elem->next = *head;
721	*head = elem;	1257	*head = elem;
722	}	1258	}
723		1259
724	static void	1260	inline void
725	wlist_del (WL *head, WL elem)	1261	wlist_del (WL *head, WL elem)
726	{	1262	{
727	while (*head)	1263	while (*head)
728	{	1264	{
729	if (*head == elem)	1265	if (*head == elem)
…		…
734		1270
735	head = &(*head)->next;	1271	head = &(*head)->next;
736	}	1272	}
737	}	1273	}
738		1274
739	static void	1275	inline void
740	ev_clear_pending (W w)	1276	ev_clear_pending (EV_P_ W w)
741	{	1277	{
742	if (w->pending)	1278	if (w->pending)
743	{	1279	{
744	pendings [w->pending - 1].w = 0;	1280	pendings [ABSPRI (w)][w->pending - 1].w = 0;
745	w->pending = 0;	1281	w->pending = 0;
746	}	1282	}
747	}	1283	}
748		1284
749	static void	1285	inline void
750	ev_start (W w, int active)	1286	ev_start (EV_P_ W w, int active)
751	{	1287	{
		1288	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1289	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1290
752	w->active = active;	1291	w->active = active;
		1292	ev_ref (EV_A);
753	}	1293	}
754		1294
755	static void	1295	inline void
756	ev_stop (W w)	1296	ev_stop (EV_P_ W w)
757	{	1297	{
		1298	ev_unref (EV_A);
758	w->active = 0;	1299	w->active = 0;
759	}	1300	}
760		1301
761	/*****************************************************************************/	1302	/*****************************************************************************/
762		1303
763	void	1304	void
764	ev_io_start (struct ev_io *w)	1305	ev_io_start (EV_P_ struct ev_io *w)
765	{	1306	{
		1307	int fd = w->fd;
		1308
766	if (ev_is_active (w))	1309	if (ev_is_active (w))
767	return;	1310	return;
768		1311
769	int fd = w->fd;
770
771	assert (("ev_io_start called with negative fd", fd >= 0));	1312	assert (("ev_io_start called with negative fd", fd >= 0));
772		1313
773	ev_start ((W)w, 1);	1314	ev_start (EV_A_ (W)w, 1);
774	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1315	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
775	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1316	wlist_add ((WL *)&anfds[fd].head, (WL)w);
776		1317
777	fd_change (fd);	1318	fd_change (EV_A_ fd);
778	}	1319	}
779		1320
780	void	1321	void
781	ev_io_stop (struct ev_io *w)	1322	ev_io_stop (EV_P_ struct ev_io *w)
782	{	1323	{
783	ev_clear_pending ((W)w);	1324	ev_clear_pending (EV_A_ (W)w);
784	if (!ev_is_active (w))	1325	if (!ev_is_active (w))
785	return;	1326	return;
786		1327
		1328	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1329
787	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1330	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
788	ev_stop ((W)w);	1331	ev_stop (EV_A_ (W)w);
789		1332
790	fd_change (w->fd);	1333	fd_change (EV_A_ w->fd);
791	}	1334	}
792		1335
793	void	1336	void
794	ev_timer_start (struct ev_timer *w)	1337	ev_timer_start (EV_P_ struct ev_timer *w)
795	{	1338	{
796	if (ev_is_active (w))	1339	if (ev_is_active (w))
797	return;	1340	return;
798		1341
799	w->at += now;	1342	((WT)w)->at += mn_now;
800		1343
801	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1344	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
802		1345
803	ev_start ((W)w, ++timercnt);	1346	ev_start (EV_A_ (W)w, ++timercnt);
804	array_needsize (timers, timermax, timercnt, );	1347	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
805	timers [timercnt - 1] = w;	1348	timers [timercnt - 1] = w;
806	upheap ((WT *)timers, timercnt - 1);	1349	upheap ((WT *)timers, timercnt - 1);
807	}
808		1350
		1351	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1352	}
		1353
809	void	1354	void
810	ev_timer_stop (struct ev_timer *w)	1355	ev_timer_stop (EV_P_ struct ev_timer *w)
811	{	1356	{
812	ev_clear_pending ((W)w);	1357	ev_clear_pending (EV_A_ (W)w);
813	if (!ev_is_active (w))	1358	if (!ev_is_active (w))
814	return;	1359	return;
815		1360
		1361	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1362
816	if (w->active < timercnt--)	1363	if (((W)w)->active < timercnt--)
817	{	1364	{
818	timers [w->active - 1] = timers [timercnt];	1365	timers [((W)w)->active - 1] = timers [timercnt];
819	downheap ((WT *)timers, timercnt, w->active - 1);	1366	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
820	}	1367	}
821		1368
822	w->at = w->repeat;	1369	((WT)w)->at -= mn_now;
823		1370
824	ev_stop ((W)w);	1371	ev_stop (EV_A_ (W)w);
825	}	1372	}
826		1373
827	void	1374	void
828	ev_timer_again (struct ev_timer *w)	1375	ev_timer_again (EV_P_ struct ev_timer *w)
829	{	1376	{
830	if (ev_is_active (w))	1377	if (ev_is_active (w))
831	{	1378	{
832	if (w->repeat)	1379	if (w->repeat)
833	{	1380	{
834	w->at = now + w->repeat;	1381	((WT)w)->at = mn_now + w->repeat;
835	downheap ((WT *)timers, timercnt, w->active - 1);	1382	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
836	}	1383	}
837	else	1384	else
838	ev_timer_stop (w);	1385	ev_timer_stop (EV_A_ w);
839	}	1386	}
840	else if (w->repeat)	1387	else if (w->repeat)
841	ev_timer_start (w);	1388	ev_timer_start (EV_A_ w);
842	}	1389	}
843		1390
		1391	#if EV_PERIODICS
844	void	1392	void
845	ev_periodic_start (struct ev_periodic *w)	1393	ev_periodic_start (EV_P_ struct ev_periodic *w)
846	{	1394	{
847	if (ev_is_active (w))	1395	if (ev_is_active (w))
848	return;	1396	return;
849		1397
		1398	if (w->reschedule_cb)
		1399	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1400	else if (w->interval)
		1401	{
850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1402	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
851
852	/* this formula differs from the one in periodic_reify because we do not always round up */	1403	/* this formula differs from the one in periodic_reify because we do not always round up */
853	if (w->interval)
854	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1404	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1405	}
855		1406
856	ev_start ((W)w, ++periodiccnt);	1407	ev_start (EV_A_ (W)w, ++periodiccnt);
857	array_needsize (periodics, periodicmax, periodiccnt, );	1408	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
858	periodics [periodiccnt - 1] = w;	1409	periodics [periodiccnt - 1] = w;
859	upheap ((WT *)periodics, periodiccnt - 1);	1410	upheap ((WT *)periodics, periodiccnt - 1);
860	}
861		1411
		1412	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1413	}
		1414
862	void	1415	void
863	ev_periodic_stop (struct ev_periodic *w)	1416	ev_periodic_stop (EV_P_ struct ev_periodic *w)
864	{	1417	{
865	ev_clear_pending ((W)w);	1418	ev_clear_pending (EV_A_ (W)w);
866	if (!ev_is_active (w))	1419	if (!ev_is_active (w))
867	return;	1420	return;
868		1421
		1422	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1423
869	if (w->active < periodiccnt--)	1424	if (((W)w)->active < periodiccnt--)
870	{	1425	{
871	periodics [w->active - 1] = periodics [periodiccnt];	1426	periodics [((W)w)->active - 1] = periodics [periodiccnt];
872	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1427	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
873	}	1428	}
874		1429
875	ev_stop ((W)w);	1430	ev_stop (EV_A_ (W)w);
876	}	1431	}
877		1432
878	void	1433	void
		1434	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1435	{
		1436	/* TODO: use adjustheap and recalculation */
		1437	ev_periodic_stop (EV_A_ w);
		1438	ev_periodic_start (EV_A_ w);
		1439	}
		1440	#endif
		1441
		1442	void
879	ev_signal_start (struct ev_signal *w)	1443	ev_idle_start (EV_P_ struct ev_idle *w)
880	{	1444	{
881	if (ev_is_active (w))	1445	if (ev_is_active (w))
882	return;	1446	return;
883		1447
		1448	ev_start (EV_A_ (W)w, ++idlecnt);
		1449	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1450	idles [idlecnt - 1] = w;
		1451	}
		1452
		1453	void
		1454	ev_idle_stop (EV_P_ struct ev_idle *w)
		1455	{
		1456	ev_clear_pending (EV_A_ (W)w);
		1457	if (!ev_is_active (w))
		1458	return;
		1459
		1460	idles [((W)w)->active - 1] = idles [--idlecnt];
		1461	ev_stop (EV_A_ (W)w);
		1462	}
		1463
		1464	void
		1465	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1466	{
		1467	if (ev_is_active (w))
		1468	return;
		1469
		1470	ev_start (EV_A_ (W)w, ++preparecnt);
		1471	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1472	prepares [preparecnt - 1] = w;
		1473	}
		1474
		1475	void
		1476	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1477	{
		1478	ev_clear_pending (EV_A_ (W)w);
		1479	if (!ev_is_active (w))
		1480	return;
		1481
		1482	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1483	ev_stop (EV_A_ (W)w);
		1484	}
		1485
		1486	void
		1487	ev_check_start (EV_P_ struct ev_check *w)
		1488	{
		1489	if (ev_is_active (w))
		1490	return;
		1491
		1492	ev_start (EV_A_ (W)w, ++checkcnt);
		1493	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1494	checks [checkcnt - 1] = w;
		1495	}
		1496
		1497	void
		1498	ev_check_stop (EV_P_ struct ev_check *w)
		1499	{
		1500	ev_clear_pending (EV_A_ (W)w);
		1501	if (!ev_is_active (w))
		1502	return;
		1503
		1504	checks [((W)w)->active - 1] = checks [--checkcnt];
		1505	ev_stop (EV_A_ (W)w);
		1506	}
		1507
		1508	#ifndef SA_RESTART
		1509	# define SA_RESTART 0
		1510	#endif
		1511
		1512	void
		1513	ev_signal_start (EV_P_ struct ev_signal *w)
		1514	{
		1515	#if EV_MULTIPLICITY
		1516	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1517	#endif
		1518	if (ev_is_active (w))
		1519	return;
		1520
884	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1521	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
885		1522
886	ev_start ((W)w, 1);	1523	ev_start (EV_A_ (W)w, 1);
887	array_needsize (signals, signalmax, w->signum, signals_init);	1524	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
888	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1525	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
889		1526
890	if (!w->next)	1527	if (!((WL)w)->next)
891	{	1528	{
		1529	#if _WIN32
		1530	signal (w->signum, sighandler);
		1531	#else
892	struct sigaction sa;	1532	struct sigaction sa;
893	sa.sa_handler = sighandler;	1533	sa.sa_handler = sighandler;
894	sigfillset (&sa.sa_mask);	1534	sigfillset (&sa.sa_mask);
895	sa.sa_flags = 0;	1535	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
896	sigaction (w->signum, &sa, 0);	1536	sigaction (w->signum, &sa, 0);
		1537	#endif
897	}	1538	}
898	}	1539	}
899		1540
900	void	1541	void
901	ev_signal_stop (struct ev_signal *w)	1542	ev_signal_stop (EV_P_ struct ev_signal *w)
902	{	1543	{
903	ev_clear_pending ((W)w);	1544	ev_clear_pending (EV_A_ (W)w);
904	if (!ev_is_active (w))	1545	if (!ev_is_active (w))
905	return;	1546	return;
906		1547
907	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1548	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
908	ev_stop ((W)w);	1549	ev_stop (EV_A_ (W)w);
909		1550
910	if (!signals [w->signum - 1].head)	1551	if (!signals [w->signum - 1].head)
911	signal (w->signum, SIG_DFL);	1552	signal (w->signum, SIG_DFL);
912	}	1553	}
913		1554
914	void	1555	void
915	ev_idle_start (struct ev_idle *w)	1556	ev_child_start (EV_P_ struct ev_child *w)
916	{	1557	{
		1558	#if EV_MULTIPLICITY
		1559	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1560	#endif
917	if (ev_is_active (w))	1561	if (ev_is_active (w))
918	return;	1562	return;
919		1563
920	ev_start ((W)w, ++idlecnt);
921	array_needsize (idles, idlemax, idlecnt, );
922	idles [idlecnt - 1] = w;
923	}
924
925	void
926	ev_idle_stop (struct ev_idle *w)
927	{
928	ev_clear_pending ((W)w);
929	if (ev_is_active (w))
930	return;
931
932	idles [w->active - 1] = idles [--idlecnt];
933	ev_stop ((W)w);
934	}
935
936	void
937	ev_prepare_start (struct ev_prepare *w)
938	{
939	if (ev_is_active (w))
940	return;
941
942	ev_start ((W)w, ++preparecnt);
943	array_needsize (prepares, preparemax, preparecnt, );
944	prepares [preparecnt - 1] = w;
945	}
946
947	void
948	ev_prepare_stop (struct ev_prepare *w)
949	{
950	ev_clear_pending ((W)w);
951	if (ev_is_active (w))
952	return;
953
954	prepares [w->active - 1] = prepares [--preparecnt];
955	ev_stop ((W)w);
956	}
957
958	void
959	ev_check_start (struct ev_check *w)
960	{
961	if (ev_is_active (w))
962	return;
963
964	ev_start ((W)w, ++checkcnt);
965	array_needsize (checks, checkmax, checkcnt, );
966	checks [checkcnt - 1] = w;
967	}
968
969	void
970	ev_check_stop (struct ev_check *w)
971	{
972	ev_clear_pending ((W)w);
973	if (ev_is_active (w))
974	return;
975
976	checks [w->active - 1] = checks [--checkcnt];
977	ev_stop ((W)w);
978	}
979
980	void
981	ev_child_start (struct ev_child *w)
982	{
983	if (ev_is_active (w))
984	return;
985
986	ev_start ((W)w, 1);	1564	ev_start (EV_A_ (W)w, 1);
987	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1565	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
988	}	1566	}
989		1567
990	void	1568	void
991	ev_child_stop (struct ev_child *w)	1569	ev_child_stop (EV_P_ struct ev_child *w)
992	{	1570	{
993	ev_clear_pending ((W)w);	1571	ev_clear_pending (EV_A_ (W)w);
994	if (ev_is_active (w))	1572	if (!ev_is_active (w))
995	return;	1573	return;
996		1574
997	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1575	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
998	ev_stop ((W)w);	1576	ev_stop (EV_A_ (W)w);
999	}	1577	}
1000		1578
1001	/*****************************************************************************/	1579	/*****************************************************************************/
1002		1580
1003	struct ev_once	1581	struct ev_once
…		…
1007	void (cb)(int revents, void arg);	1585	void (cb)(int revents, void arg);
1008	void *arg;	1586	void *arg;
1009	};	1587	};
1010		1588
1011	static void	1589	static void
1012	once_cb (struct ev_once *once, int revents)	1590	once_cb (EV_P_ struct ev_once *once, int revents)
1013	{	1591	{
1014	void (cb)(int revents, void arg) = once->cb;	1592	void (cb)(int revents, void arg) = once->cb;
1015	void *arg = once->arg;	1593	void *arg = once->arg;
1016		1594
1017	ev_io_stop (&once->io);	1595	ev_io_stop (EV_A_ &once->io);
1018	ev_timer_stop (&once->to);	1596	ev_timer_stop (EV_A_ &once->to);
1019	free (once);	1597	ev_free (once);
1020		1598
1021	cb (revents, arg);	1599	cb (revents, arg);
1022	}	1600	}
1023		1601
1024	static void	1602	static void
1025	once_cb_io (struct ev_io *w, int revents)	1603	once_cb_io (EV_P_ struct ev_io *w, int revents)
1026	{	1604	{
1027	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1605	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1028	}	1606	}
1029		1607
1030	static void	1608	static void
1031	once_cb_to (struct ev_timer *w, int revents)	1609	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1032	{	1610	{
1033	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1611	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1034	}	1612	}
1035		1613
1036	void	1614	void
1037	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1615	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1038	{	1616	{
1039	struct ev_once *once = malloc (sizeof (struct ev_once));	1617	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1040		1618
1041	if (!once)	1619	if (!once)
1042	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1620	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1043	else	1621	else
1044	{	1622	{
1045	once->cb = cb;	1623	once->cb = cb;
1046	once->arg = arg;	1624	once->arg = arg;
1047		1625
1048	ev_watcher_init (&once->io, once_cb_io);	1626	ev_init (&once->io, once_cb_io);
1049	if (fd >= 0)	1627	if (fd >= 0)
1050	{	1628	{
1051	ev_io_set (&once->io, fd, events);	1629	ev_io_set (&once->io, fd, events);
1052	ev_io_start (&once->io);	1630	ev_io_start (EV_A_ &once->io);
1053	}	1631	}
1054		1632
1055	ev_watcher_init (&once->to, once_cb_to);	1633	ev_init (&once->to, once_cb_to);
1056	if (timeout >= 0.)	1634	if (timeout >= 0.)
1057	{	1635	{
1058	ev_timer_set (&once->to, timeout, 0.);	1636	ev_timer_set (&once->to, timeout, 0.);
1059	ev_timer_start (&once->to);	1637	ev_timer_start (EV_A_ &once->to);
1060	}	1638	}
1061	}	1639	}
1062	}	1640	}
1063		1641
1064	/*****************************************************************************/	1642	#ifdef __cplusplus
1065
1066	#if 0
1067
1068	struct ev_io wio;
1069
1070	static void
1071	sin_cb (struct ev_io *w, int revents)
1072	{
1073	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1074	}	1643	}
1075
1076	static void
1077	ocb (struct ev_timer *w, int revents)
1078	{
1079	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1080	ev_timer_stop (w);
1081	ev_timer_start (w);
1082	}
1083
1084	static void
1085	scb (struct ev_signal *w, int revents)
1086	{
1087	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1088	ev_io_stop (&wio);
1089	ev_io_start (&wio);
1090	}
1091
1092	static void
1093	gcb (struct ev_signal *w, int revents)
1094	{
1095	fprintf (stderr, "generic %x\n", revents);
1096
1097	}
1098
1099	int main (void)
1100	{
1101	ev_init (0);
1102
1103	ev_io_init (&wio, sin_cb, 0, EV_READ);
1104	ev_io_start (&wio);
1105
1106	struct ev_timer t[10000];
1107
1108	#if 0
1109	int i;
1110	for (i = 0; i < 10000; ++i)
1111	{
1112	struct ev_timer *w = t + i;
1113	ev_watcher_init (w, ocb, i);
1114	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1115	ev_timer_start (w);
1116	if (drand48 () < 0.5)
1117	ev_timer_stop (w);
1118	}
1119	#endif	1644	#endif
1120		1645
1121	struct ev_timer t1;
1122	ev_timer_init (&t1, ocb, 5, 10);
1123	ev_timer_start (&t1);
1124
1125	struct ev_signal sig;
1126	ev_signal_init (&sig, scb, SIGQUIT);
1127	ev_signal_start (&sig);
1128
1129	struct ev_check cw;
1130	ev_check_init (&cw, gcb);
1131	ev_check_start (&cw);
1132
1133	struct ev_idle iw;
1134	ev_idle_init (&iw, gcb);
1135	ev_idle_start (&iw);
1136
1137	ev_loop (0);
1138
1139	return 0;
1140	}
1141
1142	#endif
1143
1144
1145
1146

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Comparing libev/ev.c (file contents): Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs. Revision 1.107 by root, Mon Nov 12 01:20:25 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs.
Revision 1.107 by root, Mon Nov 12 01:20:25 2007 UTC