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

Comparing libev/ev.c (file contents):
Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.104 by root, Mon Nov 12 00:39:45 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
		37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
		64	#endif
		65
30	#include <math.h>	66	#include <math.h>
31	#include <stdlib.h>	67	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	68	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	69	#include <stddef.h>
36		70
37	#include <stdio.h>	71	#include <stdio.h>
38		72
39	#include <assert.h>	73	#include <assert.h>
40	#include <errno.h>	74	#include <errno.h>
41	#include <sys/types.h>	75	#include <sys/types.h>
42	#include <sys/wait.h>
43	#include <sys/time.h>
44	#include <time.h>	76	#include <time.h>
45		77
46	#ifndef HAVE_MONOTONIC	78	#include <signal.h>
47	# ifdef CLOCK_MONOTONIC	79
48	# define HAVE_MONOTONIC 1	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
49	# endif	89	# endif
50	#endif	90	#endif
51		91
		92	/**/
		93
		94	#ifndef EV_USE_MONOTONIC
		95	# define EV_USE_MONOTONIC 1
		96	#endif
		97
52	#ifndef HAVE_SELECT	98	#ifndef EV_USE_SELECT
53	# define HAVE_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
54	#endif	108	# endif
		109	#endif
55		110
56	#ifndef HAVE_EPOLL	111	#ifndef EV_USE_EPOLL
57	# define HAVE_EPOLL 0	112	# define EV_USE_EPOLL 0
58	#endif	113	#endif
59		114
		115	#ifndef EV_USE_KQUEUE
		116	# define EV_USE_KQUEUE 0
		117	#endif
		118
60	#ifndef HAVE_REALTIME	119	#ifndef EV_USE_REALTIME
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	120	# define EV_USE_REALTIME 1
62	#endif	121	#endif
		122
		123	/**/
		124
		125	#ifndef CLOCK_MONOTONIC
		126	# undef EV_USE_MONOTONIC
		127	# define EV_USE_MONOTONIC 0
		128	#endif
		129
		130	#ifndef CLOCK_REALTIME
		131	# undef EV_USE_REALTIME
		132	# define EV_USE_REALTIME 0
		133	#endif
		134
		135	#if EV_SELECT_IS_WINSOCKET
		136	# include <winsock.h>
		137	#endif
		138
		139	/**/
63		140
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	141	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	142	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	143	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		144	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
67		145
		146	#ifdef EV_H
		147	# include EV_H
		148	#else
68	#include "ev.h"	149	# include "ev.h"
		150	#endif
		151
		152	#if __GNUC__ >= 3
		153	# define expect(expr,value) __builtin_expect ((expr),(value))
		154	# define inline inline
		155	#else
		156	# define expect(expr,value) (expr)
		157	# define inline static
		158	#endif
		159
		160	#define expect_false(expr) expect ((expr) != 0, 0)
		161	#define expect_true(expr) expect ((expr) != 0, 1)
		162
		163	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		164	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		165
		166	#define EMPTY /* required for microsofts broken pseudo-c compiler */
69		167
70	typedef struct ev_watcher *W;	168	typedef struct ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	169	typedef struct ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	170	typedef struct ev_watcher_time *WT;
73		171
74	static ev_tstamp now, diff; /* monotonic clock */	172	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		173
		174	#ifdef _WIN32
		175	# include "ev_win32.c"
		176	#endif
		177
		178	/*****************************************************************************/
		179
		180	static void (syserr_cb)(const char msg);
		181
		182	void ev_set_syserr_cb (void (cb)(const char msg))
		183	{
		184	syserr_cb = cb;
		185	}
		186
		187	static void
		188	syserr (const char *msg)
		189	{
		190	if (!msg)
		191	msg = "(libev) system error";
		192
		193	if (syserr_cb)
		194	syserr_cb (msg);
		195	else
		196	{
		197	perror (msg);
		198	abort ();
		199	}
		200	}
		201
		202	static void (alloc)(void *ptr, long size);
		203
		204	void ev_set_allocator (void (cb)(void *ptr, long size))
		205	{
		206	alloc = cb;
		207	}
		208
		209	static void *
		210	ev_realloc (void *ptr, long size)
		211	{
		212	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		213
		214	if (!ptr && size)
		215	{
		216	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		217	abort ();
		218	}
		219
		220	return ptr;
		221	}
		222
		223	#define ev_malloc(size) ev_realloc (0, (size))
		224	#define ev_free(ptr) ev_realloc ((ptr), 0)
		225
		226	/*****************************************************************************/
		227
		228	typedef struct
		229	{
		230	WL head;
		231	unsigned char events;
		232	unsigned char reify;
		233	#if EV_SELECT_IS_WINSOCKET
		234	SOCKET handle;
		235	#endif
		236	} ANFD;
		237
		238	typedef struct
		239	{
		240	W w;
		241	int events;
		242	} ANPENDING;
		243
		244	#if EV_MULTIPLICITY
		245
		246	struct ev_loop
		247	{
		248	ev_tstamp ev_rt_now;
		249	#define ev_rt_now ((loop)->ev_rt_now)
		250	#define VAR(name,decl) decl;
		251	#include "ev_vars.h"
		252	#undef VAR
		253	};
		254	#include "ev_wrap.h"
		255
		256	struct ev_loop default_loop_struct;
		257	static struct ev_loop *default_loop;
		258
		259	#else
		260
75	ev_tstamp ev_now;	261	ev_tstamp ev_rt_now;
76	int ev_method;	262	#define VAR(name,decl) static decl;
		263	#include "ev_vars.h"
		264	#undef VAR
77		265
78	static int have_monotonic; /* runtime */	266	static int default_loop;
79		267
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	268	#endif
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		269
84	/*****************************************************************************/	270	/*****************************************************************************/
85		271
86	ev_tstamp	272	ev_tstamp
87	ev_time (void)	273	ev_time (void)
88	{	274	{
89	#if HAVE_REALTIME	275	#if EV_USE_REALTIME
90	struct timespec ts;	276	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	277	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	278	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	279	#else
94	struct timeval tv;	280	struct timeval tv;
95	gettimeofday (&tv, 0);	281	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	282	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	283	#endif
98	}	284	}
99		285
100	static ev_tstamp	286	inline ev_tstamp
101	get_clock (void)	287	get_clock (void)
102	{	288	{
103	#if HAVE_MONOTONIC	289	#if EV_USE_MONOTONIC
104	if (have_monotonic)	290	if (expect_true (have_monotonic))
105	{	291	{
106	struct timespec ts;	292	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	293	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	294	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	295	}
110	#endif	296	#endif
111		297
112	return ev_time ();	298	return ev_time ();
113	}	299	}
114		300
		301	#if EV_MULTIPLICITY
		302	ev_tstamp
		303	ev_now (EV_P)
		304	{
		305	return ev_rt_now;
		306	}
		307	#endif
		308
		309	#define array_roundsize(type,n) ((n) \| 4 & ~3)
		310
115	#define array_needsize(base,cur,cnt,init) \	311	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	312	if (expect_false ((cnt) > cur)) \
117	{ \	313	{ \
118	int newcnt = cur; \	314	int newcnt = cur; \
119	do \	315	do \
120	{ \	316	{ \
121	newcnt = (newcnt << 1) \| 4 & ~3; \	317	newcnt = array_roundsize (type, newcnt << 1); \
122	} \	318	} \
123	while ((cnt) > newcnt); \	319	while ((cnt) > newcnt); \
124	\	320	\
125	base = realloc (base, sizeof (base) (newcnt)); \	321	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
126	init (base + cur, newcnt - cur); \	322	init (base + cur, newcnt - cur); \
127	cur = newcnt; \	323	cur = newcnt; \
128	}	324	}
		325
		326	#define array_slim(type,stem) \
		327	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		328	{ \
		329	stem ## max = array_roundsize (stem ## cnt >> 1); \
		330	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		331	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		332	}
		333
		334	#define array_free(stem, idx) \
		335	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		336
130	/*****************************************************************************/	337	/*****************************************************************************/
131
132	typedef struct
133	{
134	struct ev_io *head;
135	int events;
136	} ANFD;
137
138	static ANFD *anfds;
139	static int anfdmax;
140		338
141	static void	339	static void
142	anfds_init (ANFD *base, int count)	340	anfds_init (ANFD *base, int count)
143	{	341	{
144	while (count--)	342	while (count--)
145	{	343	{
146	base->head = 0;	344	base->head = 0;
147	base->events = EV_NONE;	345	base->events = EV_NONE;
		346	base->reify = 0;
		347
148	++base;	348	++base;
149	}	349	}
150	}	350	}
151		351
152	typedef struct	352	void
		353	ev_feed_event (EV_P_ void *w, int revents)
153	{	354	{
154	W w;	355	W w_ = (W)w;
155	int events;
156	} ANPENDING;
157		356
158	static ANPENDING *pendings;	357	if (w_->pending)
159	static int pendingmax, pendingcnt;
160
161	static void
162	event (W w, int events)
163	{
164	if (w->active)
165	{	358	{
166	w->pending = ++pendingcnt;
167	array_needsize (pendings, pendingmax, pendingcnt, );
168	pendings [pendingcnt - 1].w = w;
169	pendings [pendingcnt - 1].events = events;	359	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		360	return;
170	}	361	}
171	}
172		362
		363	w_->pending = ++pendingcnt [ABSPRI (w_)];
		364	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
		365	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		366	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		367	}
		368
173	static void	369	static void
174	queue_events (W *events, int eventcnt, int type)	370	queue_events (EV_P_ W *events, int eventcnt, int type)
175	{	371	{
176	int i;	372	int i;
177		373
178	for (i = 0; i < eventcnt; ++i)	374	for (i = 0; i < eventcnt; ++i)
179	event (events [i], type);	375	ev_feed_event (EV_A_ events [i], type);
180	}	376	}
181		377
182	static void	378	inline void
183	fd_event (int fd, int events)	379	fd_event (EV_P_ int fd, int revents)
184	{	380	{
185	ANFD *anfd = anfds + fd;	381	ANFD *anfd = anfds + fd;
186	struct ev_io *w;	382	struct ev_io *w;
187		383
188	for (w = anfd->head; w; w = w->next)	384	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
189	{	385	{
190	int ev = w->events & events;	386	int ev = w->events & revents;
191		387
192	if (ev)	388	if (ev)
193	event ((W)w, ev);	389	ev_feed_event (EV_A_ (W)w, ev);
194	}	390	}
		391	}
		392
		393	void
		394	ev_feed_fd_event (EV_P_ int fd, int revents)
		395	{
		396	fd_event (EV_A_ fd, revents);
195	}	397	}
196		398
197	/*****************************************************************************/	399	/*****************************************************************************/
198		400
199	static int *fdchanges;
200	static int fdchangemax, fdchangecnt;
201
202	static void	401	static void
203	fd_reify (void)	402	fd_reify (EV_P)
204	{	403	{
205	int i;	404	int i;
206		405
207	for (i = 0; i < fdchangecnt; ++i)	406	for (i = 0; i < fdchangecnt; ++i)
208	{	407	{
…		…
210	ANFD *anfd = anfds + fd;	409	ANFD *anfd = anfds + fd;
211	struct ev_io *w;	410	struct ev_io *w;
212		411
213	int events = 0;	412	int events = 0;
214		413
215	for (w = anfd->head; w; w = w->next)	414	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
216	events \|= w->events;	415	events \|= w->events;
217		416
218	anfd->events &= ~EV_REIFY;	417	#if EV_SELECT_IS_WINSOCKET
219		418	if (events)
220	if (anfd->events != events)
221	{	419	{
222	method_modify (fd, anfd->events, events);	420	unsigned long argp;
223	anfd->events = events;	421	anfd->handle = _get_osfhandle (fd);
		422	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
224	}	423	}
		424	#endif
		425
		426	anfd->reify = 0;
		427
		428	method_modify (EV_A_ fd, anfd->events, events);
		429	anfd->events = events;
225	}	430	}
226		431
227	fdchangecnt = 0;	432	fdchangecnt = 0;
228	}	433	}
229		434
230	static void	435	static void
231	fd_change (int fd)	436	fd_change (EV_P_ int fd)
232	{	437	{
233	if (anfds [fd].events & EV_REIFY)	438	if (anfds [fd].reify)
234	return;	439	return;
235		440
236	anfds [fd].events \|= EV_REIFY;	441	anfds [fd].reify = 1;
237		442
238	++fdchangecnt;	443	++fdchangecnt;
239	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	444	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
240	fdchanges [fdchangecnt - 1] = fd;	445	fdchanges [fdchangecnt - 1] = fd;
241	}	446	}
242		447
		448	static void
		449	fd_kill (EV_P_ int fd)
		450	{
		451	struct ev_io *w;
		452
		453	while ((w = (struct ev_io *)anfds [fd].head))
		454	{
		455	ev_io_stop (EV_A_ w);
		456	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		457	}
		458	}
		459
		460	static int
		461	fd_valid (int fd)
		462	{
		463	#ifdef _WIN32
		464	return _get_osfhandle (fd) != -1;
		465	#else
		466	return fcntl (fd, F_GETFD) != -1;
		467	#endif
		468	}
		469
243	/* called on EBADF to verify fds */	470	/* called on EBADF to verify fds */
244	static void	471	static void
245	fd_recheck (void)	472	fd_ebadf (EV_P)
246	{	473	{
247	int fd;	474	int fd;
248		475
249	for (fd = 0; fd < anfdmax; ++fd)	476	for (fd = 0; fd < anfdmax; ++fd)
250	if (anfds [fd].events)	477	if (anfds [fd].events)
251	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	478	if (!fd_valid (fd) == -1 && errno == EBADF)
252	while (anfds [fd].head)	479	fd_kill (EV_A_ fd);
		480	}
		481
		482	/* called on ENOMEM in select/poll to kill some fds and retry */
		483	static void
		484	fd_enomem (EV_P)
		485	{
		486	int fd;
		487
		488	for (fd = anfdmax; fd--; )
		489	if (anfds [fd].events)
253	{	490	{
254	event ((W)anfds [fd].head, EV_ERROR);	491	fd_kill (EV_A_ fd);
255	ev_io_stop (anfds [fd].head);	492	return;
256	}	493	}
		494	}
		495
		496	/* usually called after fork if method needs to re-arm all fds from scratch */
		497	static void
		498	fd_rearm_all (EV_P)
		499	{
		500	int fd;
		501
		502	/* this should be highly optimised to not do anything but set a flag */
		503	for (fd = 0; fd < anfdmax; ++fd)
		504	if (anfds [fd].events)
		505	{
		506	anfds [fd].events = 0;
		507	fd_change (EV_A_ fd);
		508	}
257	}	509	}
258		510
259	/*****************************************************************************/	511	/*****************************************************************************/
260		512
261	static struct ev_timer **timers;
262	static int timermax, timercnt;
263
264	static struct ev_periodic **periodics;
265	static int periodicmax, periodiccnt;
266
267	static void	513	static void
268	upheap (WT *timers, int k)	514	upheap (WT *heap, int k)
269	{	515	{
270	WT w = timers [k];	516	WT w = heap [k];
271		517
272	while (k && timers [k >> 1]->at > w->at)	518	while (k && heap [k >> 1]->at > w->at)
273	{	519	{
274	timers [k] = timers [k >> 1];	520	heap [k] = heap [k >> 1];
275	timers [k]->active = k + 1;	521	((W)heap [k])->active = k + 1;
276	k >>= 1;	522	k >>= 1;
277	}	523	}
278		524
279	timers [k] = w;	525	heap [k] = w;
280	timers [k]->active = k + 1;	526	((W)heap [k])->active = k + 1;
281		527
282	}	528	}
283		529
284	static void	530	static void
285	downheap (WT *timers, int N, int k)	531	downheap (WT *heap, int N, int k)
286	{	532	{
287	WT w = timers [k];	533	WT w = heap [k];
288		534
289	while (k < (N >> 1))	535	while (k < (N >> 1))
290	{	536	{
291	int j = k << 1;	537	int j = k << 1;
292		538
293	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	539	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
294	++j;	540	++j;
295		541
296	if (w->at <= timers [j]->at)	542	if (w->at <= heap [j]->at)
297	break;	543	break;
298		544
299	timers [k] = timers [j];	545	heap [k] = heap [j];
300	timers [k]->active = k + 1;	546	((W)heap [k])->active = k + 1;
301	k = j;	547	k = j;
302	}	548	}
303		549
304	timers [k] = w;	550	heap [k] = w;
305	timers [k]->active = k + 1;	551	((W)heap [k])->active = k + 1;
		552	}
		553
		554	inline void
		555	adjustheap (WT *heap, int N, int k)
		556	{
		557	upheap (heap, k);
		558	downheap (heap, N, k);
306	}	559	}
307		560
308	/*****************************************************************************/	561	/*****************************************************************************/
309		562
310	typedef struct	563	typedef struct
311	{	564	{
312	struct ev_signal *head;	565	WL head;
313	sig_atomic_t gotsig;	566	sig_atomic_t volatile gotsig;
314	} ANSIG;	567	} ANSIG;
315		568
316	static ANSIG *signals;	569	static ANSIG *signals;
317	static int signalmax;	570	static int signalmax;
318		571
319	static int sigpipe [2];	572	static int sigpipe [2];
320	static sig_atomic_t gotsig;	573	static sig_atomic_t volatile gotsig;
321	static struct ev_io sigev;	574	static struct ev_io sigev;
322		575
323	static void	576	static void
324	signals_init (ANSIG *base, int count)	577	signals_init (ANSIG *base, int count)
325	{	578	{
326	while (count--)	579	while (count--)
327	{	580	{
328	base->head = 0;	581	base->head = 0;
329	base->gotsig = 0;	582	base->gotsig = 0;
		583
330	++base;	584	++base;
331	}	585	}
332	}	586	}
333		587
334	static void	588	static void
335	sighandler (int signum)	589	sighandler (int signum)
336	{	590	{
		591	#if _WIN32
		592	signal (signum, sighandler);
		593	#endif
		594
337	signals [signum - 1].gotsig = 1;	595	signals [signum - 1].gotsig = 1;
338		596
339	if (!gotsig)	597	if (!gotsig)
340	{	598	{
		599	int old_errno = errno;
341	gotsig = 1;	600	gotsig = 1;
342	write (sigpipe [1], &gotsig, 1);	601	write (sigpipe [1], &signum, 1);
		602	errno = old_errno;
343	}	603	}
344	}	604	}
345		605
		606	void
		607	ev_feed_signal_event (EV_P_ int signum)
		608	{
		609	WL w;
		610
		611	#if EV_MULTIPLICITY
		612	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		613	#endif
		614
		615	--signum;
		616
		617	if (signum < 0 \|\| signum >= signalmax)
		618	return;
		619
		620	signals [signum].gotsig = 0;
		621
		622	for (w = signals [signum].head; w; w = w->next)
		623	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		624	}
		625
346	static void	626	static void
347	sigcb (struct ev_io *iow, int revents)	627	sigcb (EV_P_ struct ev_io *iow, int revents)
348	{	628	{
349	struct ev_signal *w;
350	int sig;	629	int signum;
351		630
		631	read (sigpipe [0], &revents, 1);
352	gotsig = 0;	632	gotsig = 0;
353	read (sigpipe [0], &revents, 1);
354		633
355	for (sig = signalmax; sig--; )	634	for (signum = signalmax; signum--; )
356	if (signals [sig].gotsig)	635	if (signals [signum].gotsig)
357	{	636	ev_feed_signal_event (EV_A_ signum + 1);
358	signals [sig].gotsig = 0;
359
360	for (w = signals [sig].head; w; w = w->next)
361	event ((W)w, EV_SIGNAL);
362	}
363	}	637	}
364		638
365	static void	639	inline void
366	siginit (void)	640	fd_intern (int fd)
367	{	641	{
		642	#ifdef _WIN32
		643	int arg = 1;
		644	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		645	#else
368	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	646	fcntl (fd, F_SETFD, FD_CLOEXEC);
369	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
370
371	/* rather than sort out wether we really need nb, set it */
372	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	647	fcntl (fd, F_SETFL, O_NONBLOCK);
373	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	648	#endif
		649	}
		650
		651	static void
		652	siginit (EV_P)
		653	{
		654	fd_intern (sigpipe [0]);
		655	fd_intern (sigpipe [1]);
374		656
375	ev_io_set (&sigev, sigpipe [0], EV_READ);	657	ev_io_set (&sigev, sigpipe [0], EV_READ);
376	ev_io_start (&sigev);	658	ev_io_start (EV_A_ &sigev);
		659	ev_unref (EV_A); /* child watcher should not keep loop alive */
377	}	660	}
378		661
379	/*****************************************************************************/	662	/*****************************************************************************/
380		663
381	static struct ev_idle **idles;
382	static int idlemax, idlecnt;
383
384	static struct ev_prepare **prepares;
385	static int preparemax, preparecnt;
386
387	static struct ev_check **checks;
388	static int checkmax, checkcnt;
389
390	/*****************************************************************************/
391
392	static struct ev_child *childs [PID_HASHSIZE];	664	static struct ev_child *childs [PID_HASHSIZE];
		665
		666	#ifndef _WIN32
		667
393	static struct ev_signal childev;	668	static struct ev_signal childev;
394		669
395	#ifndef WCONTINUED	670	#ifndef WCONTINUED
396	# define WCONTINUED 0	671	# define WCONTINUED 0
397	#endif	672	#endif
398		673
399	static void	674	static void
400	childcb (struct ev_signal *sw, int revents)	675	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
401	{	676	{
402	struct ev_child *w;	677	struct ev_child *w;
		678
		679	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		680	if (w->pid == pid \|\| !w->pid)
		681	{
		682	ev_priority (w) = ev_priority (sw); /* need to do it now */
		683	w->rpid = pid;
		684	w->rstatus = status;
		685	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		686	}
		687	}
		688
		689	static void
		690	childcb (EV_P_ struct ev_signal *sw, int revents)
		691	{
403	int pid, status;	692	int pid, status;
404		693
405	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	694	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
406	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	695	{
407	if (w->pid == pid \|\| w->pid == -1)	696	/* make sure we are called again until all childs have been reaped */
408	{	697	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
409	w->status = status;	698
410	event ((W)w, EV_CHILD);	699	child_reap (EV_A_ sw, pid, pid, status);
411	}	700	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		701	}
412	}	702	}
		703
		704	#endif
413		705
414	/*****************************************************************************/	706	/*****************************************************************************/
415		707
		708	#if EV_USE_KQUEUE
		709	# include "ev_kqueue.c"
		710	#endif
416	#if HAVE_EPOLL	711	#if EV_USE_EPOLL
417	# include "ev_epoll.c"	712	# include "ev_epoll.c"
418	#endif	713	#endif
		714	#if EV_USE_POLL
		715	# include "ev_poll.c"
		716	#endif
419	#if HAVE_SELECT	717	#if EV_USE_SELECT
420	# include "ev_select.c"	718	# include "ev_select.c"
421	#endif	719	#endif
422		720
423	int	721	int
424	ev_version_major (void)	722	ev_version_major (void)
…		…
430	ev_version_minor (void)	728	ev_version_minor (void)
431	{	729	{
432	return EV_VERSION_MINOR;	730	return EV_VERSION_MINOR;
433	}	731	}
434		732
435	int ev_init (int flags)	733	/* return true if we are running with elevated privileges and should ignore env variables */
		734	static int
		735	enable_secure (void)
436	{	736	{
		737	#ifdef _WIN32
		738	return 0;
		739	#else
		740	return getuid () != geteuid ()
		741	\|\| getgid () != getegid ();
		742	#endif
		743	}
		744
		745	int
		746	ev_method (EV_P)
		747	{
		748	return method;
		749	}
		750
		751	static void
		752	loop_init (EV_P_ int methods)
		753	{
437	if (!ev_method)	754	if (!method)
438	{	755	{
439	#if HAVE_MONOTONIC	756	#if EV_USE_MONOTONIC
440	{	757	{
441	struct timespec ts;	758	struct timespec ts;
442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	759	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
443	have_monotonic = 1;	760	have_monotonic = 1;
444	}	761	}
445	#endif	762	#endif
446		763
447	ev_now = ev_time ();	764	ev_rt_now = ev_time ();
448	now = get_clock ();	765	mn_now = get_clock ();
		766	now_floor = mn_now;
449	diff = ev_now - now;	767	rtmn_diff = ev_rt_now - mn_now;
450		768
		769	if (methods == EVMETHOD_AUTO)
		770	if (!enable_secure () && getenv ("LIBEV_METHODS"))
		771	methods = atoi (getenv ("LIBEV_METHODS"));
		772	else
		773	methods = EVMETHOD_ANY;
		774
		775	method = 0;
		776	#if EV_USE_KQUEUE
		777	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		778	#endif
		779	#if EV_USE_EPOLL
		780	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		781	#endif
		782	#if EV_USE_POLL
		783	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
		784	#endif
		785	#if EV_USE_SELECT
		786	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
		787	#endif
		788
		789	ev_init (&sigev, sigcb);
		790	ev_set_priority (&sigev, EV_MAXPRI);
		791	}
		792	}
		793
		794	void
		795	loop_destroy (EV_P)
		796	{
		797	int i;
		798
		799	#if EV_USE_KQUEUE
		800	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		801	#endif
		802	#if EV_USE_EPOLL
		803	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		804	#endif
		805	#if EV_USE_POLL
		806	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		807	#endif
		808	#if EV_USE_SELECT
		809	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		810	#endif
		811
		812	for (i = NUMPRI; i--; )
		813	array_free (pending, [i]);
		814
		815	/* have to use the microsoft-never-gets-it-right macro */
		816	array_free (fdchange, EMPTY);
		817	array_free (timer, EMPTY);
		818	#if EV_PERIODICS
		819	array_free (periodic, EMPTY);
		820	#endif
		821	array_free (idle, EMPTY);
		822	array_free (prepare, EMPTY);
		823	array_free (check, EMPTY);
		824
		825	method = 0;
		826	}
		827
		828	static void
		829	loop_fork (EV_P)
		830	{
		831	#if EV_USE_EPOLL
		832	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		833	#endif
		834	#if EV_USE_KQUEUE
		835	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		836	#endif
		837
		838	if (ev_is_active (&sigev))
		839	{
		840	/* default loop */
		841
		842	ev_ref (EV_A);
		843	ev_io_stop (EV_A_ &sigev);
		844	close (sigpipe [0]);
		845	close (sigpipe [1]);
		846
		847	while (pipe (sigpipe))
		848	syserr ("(libev) error creating pipe");
		849
		850	siginit (EV_A);
		851	}
		852
		853	postfork = 0;
		854	}
		855
		856	#if EV_MULTIPLICITY
		857	struct ev_loop *
		858	ev_loop_new (int methods)
		859	{
		860	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		861
		862	memset (loop, 0, sizeof (struct ev_loop));
		863
		864	loop_init (EV_A_ methods);
		865
		866	if (ev_method (EV_A))
		867	return loop;
		868
		869	return 0;
		870	}
		871
		872	void
		873	ev_loop_destroy (EV_P)
		874	{
		875	loop_destroy (EV_A);
		876	ev_free (loop);
		877	}
		878
		879	void
		880	ev_loop_fork (EV_P)
		881	{
		882	postfork = 1;
		883	}
		884
		885	#endif
		886
		887	#if EV_MULTIPLICITY
		888	struct ev_loop *
		889	#else
		890	int
		891	#endif
		892	ev_default_loop (int methods)
		893	{
		894	if (sigpipe [0] == sigpipe [1])
451	if (pipe (sigpipe))	895	if (pipe (sigpipe))
452	return 0;	896	return 0;
453		897
454	ev_method = EVMETHOD_NONE;	898	if (!default_loop)
455	#if HAVE_EPOLL	899	{
456	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	900	#if EV_MULTIPLICITY
		901	struct ev_loop *loop = default_loop = &default_loop_struct;
		902	#else
		903	default_loop = 1;
457	#endif	904	#endif
458	#if HAVE_SELECT
459	if (ev_method == EVMETHOD_NONE) select_init (flags);
460	#endif
461		905
		906	loop_init (EV_A_ methods);
		907
462	if (ev_method)	908	if (ev_method (EV_A))
463	{	909	{
464	ev_watcher_init (&sigev, sigcb);
465	siginit ();	910	siginit (EV_A);
466		911
		912	#ifndef _WIN32
467	ev_signal_init (&childev, childcb, SIGCHLD);	913	ev_signal_init (&childev, childcb, SIGCHLD);
		914	ev_set_priority (&childev, EV_MAXPRI);
468	ev_signal_start (&childev);	915	ev_signal_start (EV_A_ &childev);
		916	ev_unref (EV_A); /* child watcher should not keep loop alive */
		917	#endif
469	}	918	}
		919	else
		920	default_loop = 0;
470	}	921	}
471		922
472	return ev_method;	923	return default_loop;
		924	}
		925
		926	void
		927	ev_default_destroy (void)
		928	{
		929	#if EV_MULTIPLICITY
		930	struct ev_loop *loop = default_loop;
		931	#endif
		932
		933	#ifndef _WIN32
		934	ev_ref (EV_A); /* child watcher */
		935	ev_signal_stop (EV_A_ &childev);
		936	#endif
		937
		938	ev_ref (EV_A); /* signal watcher */
		939	ev_io_stop (EV_A_ &sigev);
		940
		941	close (sigpipe [0]); sigpipe [0] = 0;
		942	close (sigpipe [1]); sigpipe [1] = 0;
		943
		944	loop_destroy (EV_A);
		945	}
		946
		947	void
		948	ev_default_fork (void)
		949	{
		950	#if EV_MULTIPLICITY
		951	struct ev_loop *loop = default_loop;
		952	#endif
		953
		954	if (method)
		955	postfork = 1;
473	}	956	}
474		957
475	/*****************************************************************************/	958	/*****************************************************************************/
476		959
477	void
478	ev_prefork (void)
479	{
480	/* nop */
481	}
482
483	void
484	ev_postfork_parent (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_child (void)
491	{
492	#if HAVE_EPOLL
493	if (ev_method == EVMETHOD_EPOLL)
494	epoll_postfork_child ();
495	#endif
496
497	ev_io_stop (&sigev);
498	close (sigpipe [0]);
499	close (sigpipe [1]);
500	pipe (sigpipe);
501	siginit ();
502	}
503
504	/*****************************************************************************/
505
506	static void	960	static int
		961	any_pending (EV_P)
		962	{
		963	int pri;
		964
		965	for (pri = NUMPRI; pri--; )
		966	if (pendingcnt [pri])
		967	return 1;
		968
		969	return 0;
		970	}
		971
		972	static void
507	call_pending (void)	973	call_pending (EV_P)
508	{	974	{
		975	int pri;
		976
		977	for (pri = NUMPRI; pri--; )
509	while (pendingcnt)	978	while (pendingcnt [pri])
510	{	979	{
511	ANPENDING *p = pendings + --pendingcnt;	980	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
512		981
513	if (p->w)	982	if (p->w)
514	{	983	{
515	p->w->pending = 0;	984	p->w->pending = 0;
516	p->w->cb (p->w, p->events);	985	EV_CB_INVOKE (p->w, p->events);
517	}	986	}
518	}	987	}
519	}	988	}
520		989
521	static void	990	static void
522	timers_reify (void)	991	timers_reify (EV_P)
523	{	992	{
524	while (timercnt && timers [0]->at <= now)	993	while (timercnt && ((WT)timers [0])->at <= mn_now)
525	{	994	{
526	struct ev_timer *w = timers [0];	995	struct ev_timer *w = timers [0];
527		996
528	event ((W)w, EV_TIMEOUT);	997	assert (("inactive timer on timer heap detected", ev_is_active (w)));
529		998
530	/* first reschedule or stop timer */	999	/* first reschedule or stop timer */
531	if (w->repeat)	1000	if (w->repeat)
532	{	1001	{
		1002	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1003
533	w->at = now + w->repeat;	1004	((WT)w)->at += w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));	1005	if (((WT)w)->at < mn_now)
		1006	((WT)w)->at = mn_now;
		1007
535	downheap ((WT *)timers, timercnt, 0);	1008	downheap ((WT *)timers, timercnt, 0);
536	}	1009	}
537	else	1010	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	1011	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539	}
540	}
541		1012
		1013	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1014	}
		1015	}
		1016
		1017	#if EV_PERIODICS
542	static void	1018	static void
543	periodics_reify (void)	1019	periodics_reify (EV_P)
544	{	1020	{
545	while (periodiccnt && periodics [0]->at <= ev_now)	1021	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
546	{	1022	{
547	struct ev_periodic *w = periodics [0];	1023	struct ev_periodic *w = periodics [0];
548		1024
		1025	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1026
549	/* first reschedule or stop timer */	1027	/* first reschedule or stop timer */
550	if (w->interval)	1028	if (w->reschedule_cb)
551	{	1029	{
		1030	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1031
		1032	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1033	downheap ((WT *)periodics, periodiccnt, 0);
		1034	}
		1035	else if (w->interval)
		1036	{
552	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1037	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
553	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1038	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
554	downheap ((WT *)periodics, periodiccnt, 0);	1039	downheap ((WT *)periodics, periodiccnt, 0);
555	}	1040	}
556	else	1041	else
557	ev_periodic_stop (w); /* nonrepeating: stop timer */	1042	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
558		1043
559	event ((W)w, EV_TIMEOUT);	1044	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
560	}	1045	}
561	}	1046	}
562		1047
563	static void	1048	static void
564	periodics_reschedule (ev_tstamp diff)	1049	periodics_reschedule (EV_P)
565	{	1050	{
566	int i;	1051	int i;
567		1052
568	/* adjust periodics after time jump */	1053	/* adjust periodics after time jump */
569	for (i = 0; i < periodiccnt; ++i)	1054	for (i = 0; i < periodiccnt; ++i)
570	{	1055	{
571	struct ev_periodic *w = periodics [i];	1056	struct ev_periodic *w = periodics [i];
572		1057
		1058	if (w->reschedule_cb)
		1059	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
573	if (w->interval)	1060	else if (w->interval)
		1061	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1062	}
		1063
		1064	/* now rebuild the heap */
		1065	for (i = periodiccnt >> 1; i--; )
		1066	downheap ((WT *)periodics, periodiccnt, i);
		1067	}
		1068	#endif
		1069
		1070	inline int
		1071	time_update_monotonic (EV_P)
		1072	{
		1073	mn_now = get_clock ();
		1074
		1075	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1076	{
		1077	ev_rt_now = rtmn_diff + mn_now;
		1078	return 0;
		1079	}
		1080	else
		1081	{
		1082	now_floor = mn_now;
		1083	ev_rt_now = ev_time ();
		1084	return 1;
		1085	}
		1086	}
		1087
		1088	static void
		1089	time_update (EV_P)
		1090	{
		1091	int i;
		1092
		1093	#if EV_USE_MONOTONIC
		1094	if (expect_true (have_monotonic))
		1095	{
		1096	if (time_update_monotonic (EV_A))
574	{	1097	{
575	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1098	ev_tstamp odiff = rtmn_diff;
576		1099
577	if (fabs (diff) >= 1e-4)	1100	for (i = 4; --i; ) /* loop a few times, before making important decisions */
578	{	1101	{
579	ev_periodic_stop (w);	1102	rtmn_diff = ev_rt_now - mn_now;
580	ev_periodic_start (w);
581		1103
582	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1104	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1105	return; /* all is well */
		1106
		1107	ev_rt_now = ev_time ();
		1108	mn_now = get_clock ();
		1109	now_floor = mn_now;
583	}	1110	}
		1111
		1112	# if EV_PERIODICS
		1113	periodics_reschedule (EV_A);
		1114	# endif
		1115	/* no timer adjustment, as the monotonic clock doesn't jump */
		1116	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
584	}	1117	}
585	}	1118	}
586	}	1119	else
587		1120	#endif
588	static void	1121	{
589	time_update (void)
590	{
591	int i;
592
593	ev_now = ev_time ();	1122	ev_rt_now = ev_time ();
594		1123
595	if (have_monotonic)	1124	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
596	{
597	ev_tstamp odiff = diff;
598
599	for (i = 4; --i; ) /* loop a few times, before making important decisions */
600	{	1125	{
601	now = get_clock ();	1126	#if EV_PERIODICS
602	diff = ev_now - now;
603
604	if (fabs (odiff - diff) < MIN_TIMEJUMP)
605	return; /* all is well */
606
607	ev_now = ev_time ();
608	}
609
610	periodics_reschedule (diff - odiff);
611	/* no timer adjustment, as the monotonic clock doesn't jump */
612	}
613	else
614	{
615	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
616	{
617	periodics_reschedule (ev_now - now);	1127	periodics_reschedule (EV_A);
		1128	#endif
618		1129
619	/* adjust timers. this is easy, as the offset is the same for all */	1130	/* adjust timers. this is easy, as the offset is the same for all */
620	for (i = 0; i < timercnt; ++i)	1131	for (i = 0; i < timercnt; ++i)
621	timers [i]->at += diff;	1132	((WT)timers [i])->at += ev_rt_now - mn_now;
622	}	1133	}
623		1134
624	now = ev_now;	1135	mn_now = ev_rt_now;
625	}	1136	}
626	}	1137	}
627		1138
628	int ev_loop_done;	1139	void
		1140	ev_ref (EV_P)
		1141	{
		1142	++activecnt;
		1143	}
629		1144
		1145	void
		1146	ev_unref (EV_P)
		1147	{
		1148	--activecnt;
		1149	}
		1150
		1151	static int loop_done;
		1152
		1153	void
630	void ev_loop (int flags)	1154	ev_loop (EV_P_ int flags)
631	{	1155	{
632	double block;	1156	double block;
633	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1157	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
634		1158
635	do	1159	do
636	{	1160	{
637	/* queue check watchers (and execute them) */	1161	/* queue check watchers (and execute them) */
638	if (preparecnt)	1162	if (expect_false (preparecnt))
639	{	1163	{
640	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1164	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
641	call_pending ();	1165	call_pending (EV_A);
642	}	1166	}
643		1167
		1168	/* we might have forked, so reify kernel state if necessary */
		1169	if (expect_false (postfork))
		1170	loop_fork (EV_A);
		1171
644	/* update fd-related kernel structures */	1172	/* update fd-related kernel structures */
645	fd_reify ();	1173	fd_reify (EV_A);
646		1174
647	/* calculate blocking time */	1175	/* calculate blocking time */
648		1176
649	/* we only need this for !monotonic clockor timers, but as we basically	1177	/* we only need this for !monotonic clock or timers, but as we basically
650	always have timers, we just calculate it always */	1178	always have timers, we just calculate it always */
		1179	#if EV_USE_MONOTONIC
		1180	if (expect_true (have_monotonic))
		1181	time_update_monotonic (EV_A);
		1182	else
		1183	#endif
		1184	{
651	ev_now = ev_time ();	1185	ev_rt_now = ev_time ();
		1186	mn_now = ev_rt_now;
		1187	}
652		1188
653	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1189	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
654	block = 0.;	1190	block = 0.;
655	else	1191	else
656	{	1192	{
657	block = MAX_BLOCKTIME;	1193	block = MAX_BLOCKTIME;
658		1194
659	if (timercnt)	1195	if (timercnt)
660	{	1196	{
661	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1197	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
662	if (block > to) block = to;	1198	if (block > to) block = to;
663	}	1199	}
664		1200
		1201	#if EV_PERIODICS
665	if (periodiccnt)	1202	if (periodiccnt)
666	{	1203	{
667	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1204	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
668	if (block > to) block = to;	1205	if (block > to) block = to;
669	}	1206	}
		1207	#endif
670		1208
671	if (block < 0.) block = 0.;	1209	if (block < 0.) block = 0.;
672	}	1210	}
673		1211
674	method_poll (block);	1212	method_poll (EV_A_ block);
675		1213
676	/* update ev_now, do magic */	1214	/* update ev_rt_now, do magic */
677	time_update ();	1215	time_update (EV_A);
678		1216
679	/* queue pending timers and reschedule them */	1217	/* queue pending timers and reschedule them */
680	timers_reify (); /* relative timers called last */	1218	timers_reify (EV_A); /* relative timers called last */
		1219	#if EV_PERIODICS
681	periodics_reify (); /* absolute timers called first */	1220	periodics_reify (EV_A); /* absolute timers called first */
		1221	#endif
682		1222
683	/* queue idle watchers unless io or timers are pending */	1223	/* queue idle watchers unless io or timers are pending */
684	if (!pendingcnt)	1224	if (idlecnt && !any_pending (EV_A))
685	queue_events ((W *)idles, idlecnt, EV_IDLE);	1225	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
686		1226
687	/* queue check watchers, to be executed first */	1227	/* queue check watchers, to be executed first */
688	if (checkcnt)	1228	if (checkcnt)
689	queue_events ((W *)checks, checkcnt, EV_CHECK);	1229	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
690		1230
691	call_pending ();	1231	call_pending (EV_A);
692	}	1232	}
693	while (!ev_loop_done);	1233	while (activecnt && !loop_done);
694		1234
695	if (ev_loop_done != 2)	1235	if (loop_done != 2)
696	ev_loop_done = 0;	1236	loop_done = 0;
		1237	}
		1238
		1239	void
		1240	ev_unloop (EV_P_ int how)
		1241	{
		1242	loop_done = how;
697	}	1243	}
698		1244
699	/*****************************************************************************/	1245	/*****************************************************************************/
700		1246
701	static void	1247	inline void
702	wlist_add (WL *head, WL elem)	1248	wlist_add (WL *head, WL elem)
703	{	1249	{
704	elem->next = *head;	1250	elem->next = *head;
705	*head = elem;	1251	*head = elem;
706	}	1252	}
707		1253
708	static void	1254	inline void
709	wlist_del (WL *head, WL elem)	1255	wlist_del (WL *head, WL elem)
710	{	1256	{
711	while (*head)	1257	while (*head)
712	{	1258	{
713	if (*head == elem)	1259	if (*head == elem)
…		…
718		1264
719	head = &(*head)->next;	1265	head = &(*head)->next;
720	}	1266	}
721	}	1267	}
722		1268
723	static void	1269	inline void
724	ev_clear (W w)	1270	ev_clear_pending (EV_P_ W w)
725	{	1271	{
726	if (w->pending)	1272	if (w->pending)
727	{	1273	{
728	pendings [w->pending - 1].w = 0;	1274	pendings [ABSPRI (w)][w->pending - 1].w = 0;
729	w->pending = 0;	1275	w->pending = 0;
730	}	1276	}
731	}	1277	}
732		1278
733	static void	1279	inline void
734	ev_start (W w, int active)	1280	ev_start (EV_P_ W w, int active)
735	{	1281	{
		1282	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1283	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1284
736	w->active = active;	1285	w->active = active;
		1286	ev_ref (EV_A);
737	}	1287	}
738		1288
739	static void	1289	inline void
740	ev_stop (W w)	1290	ev_stop (EV_P_ W w)
741	{	1291	{
		1292	ev_unref (EV_A);
742	w->active = 0;	1293	w->active = 0;
743	}	1294	}
744		1295
745	/*****************************************************************************/	1296	/*****************************************************************************/
746		1297
747	void	1298	void
748	ev_io_start (struct ev_io *w)	1299	ev_io_start (EV_P_ struct ev_io *w)
749	{	1300	{
		1301	int fd = w->fd;
		1302
750	if (ev_is_active (w))	1303	if (ev_is_active (w))
751	return;	1304	return;
752		1305
753	int fd = w->fd;	1306	assert (("ev_io_start called with negative fd", fd >= 0));
754		1307
755	ev_start ((W)w, 1);	1308	ev_start (EV_A_ (W)w, 1);
756	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1309	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
757	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1310	wlist_add ((WL *)&anfds[fd].head, (WL)w);
758		1311
759	fd_change (fd);	1312	fd_change (EV_A_ fd);
760	}	1313	}
761		1314
762	void	1315	void
763	ev_io_stop (struct ev_io *w)	1316	ev_io_stop (EV_P_ struct ev_io *w)
764	{	1317	{
765	ev_clear ((W)w);	1318	ev_clear_pending (EV_A_ (W)w);
766	if (!ev_is_active (w))	1319	if (!ev_is_active (w))
767	return;	1320	return;
768		1321
		1322	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1323
769	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1324	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
770	ev_stop ((W)w);	1325	ev_stop (EV_A_ (W)w);
771		1326
772	fd_change (w->fd);	1327	fd_change (EV_A_ w->fd);
773	}	1328	}
774		1329
775	void	1330	void
776	ev_timer_start (struct ev_timer *w)	1331	ev_timer_start (EV_P_ struct ev_timer *w)
777	{	1332	{
778	if (ev_is_active (w))	1333	if (ev_is_active (w))
779	return;	1334	return;
780		1335
781	w->at += now;	1336	((WT)w)->at += mn_now;
782		1337
783	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1338	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
784		1339
785	ev_start ((W)w, ++timercnt);	1340	ev_start (EV_A_ (W)w, ++timercnt);
786	array_needsize (timers, timermax, timercnt, );	1341	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
787	timers [timercnt - 1] = w;	1342	timers [timercnt - 1] = w;
788	upheap ((WT *)timers, timercnt - 1);	1343	upheap ((WT *)timers, timercnt - 1);
789	}
790		1344
		1345	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1346	}
		1347
791	void	1348	void
792	ev_timer_stop (struct ev_timer *w)	1349	ev_timer_stop (EV_P_ struct ev_timer *w)
793	{	1350	{
794	ev_clear ((W)w);	1351	ev_clear_pending (EV_A_ (W)w);
795	if (!ev_is_active (w))	1352	if (!ev_is_active (w))
796	return;	1353	return;
797		1354
		1355	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1356
798	if (w->active < timercnt--)	1357	if (((W)w)->active < timercnt--)
799	{	1358	{
800	timers [w->active - 1] = timers [timercnt];	1359	timers [((W)w)->active - 1] = timers [timercnt];
801	downheap ((WT *)timers, timercnt, w->active - 1);	1360	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
802	}	1361	}
803		1362
804	w->at = w->repeat;	1363	((WT)w)->at -= mn_now;
805		1364
806	ev_stop ((W)w);	1365	ev_stop (EV_A_ (W)w);
807	}	1366	}
808		1367
809	void	1368	void
810	ev_timer_again (struct ev_timer *w)	1369	ev_timer_again (EV_P_ struct ev_timer *w)
811	{	1370	{
812	if (ev_is_active (w))	1371	if (ev_is_active (w))
813	{	1372	{
814	if (w->repeat)	1373	if (w->repeat)
815	{	1374	{
816	w->at = now + w->repeat;	1375	((WT)w)->at = mn_now + w->repeat;
817	downheap ((WT *)timers, timercnt, w->active - 1);	1376	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
818	}	1377	}
819	else	1378	else
820	ev_timer_stop (w);	1379	ev_timer_stop (EV_A_ w);
821	}	1380	}
822	else if (w->repeat)	1381	else if (w->repeat)
823	ev_timer_start (w);	1382	ev_timer_start (EV_A_ w);
824	}	1383	}
825		1384
		1385	#if EV_PERIODICS
826	void	1386	void
827	ev_periodic_start (struct ev_periodic *w)	1387	ev_periodic_start (EV_P_ struct ev_periodic *w)
828	{	1388	{
829	if (ev_is_active (w))	1389	if (ev_is_active (w))
830	return;	1390	return;
831		1391
832	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1392	if (w->reschedule_cb)
833		1393	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1394	else if (w->interval)
		1395	{
		1396	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
834	/* this formula differs from the one in periodic_reify because we do not always round up */	1397	/* this formula differs from the one in periodic_reify because we do not always round up */
835	if (w->interval)
836	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1398	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1399	}
837		1400
838	ev_start ((W)w, ++periodiccnt);	1401	ev_start (EV_A_ (W)w, ++periodiccnt);
839	array_needsize (periodics, periodicmax, periodiccnt, );	1402	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
840	periodics [periodiccnt - 1] = w;	1403	periodics [periodiccnt - 1] = w;
841	upheap ((WT *)periodics, periodiccnt - 1);	1404	upheap ((WT *)periodics, periodiccnt - 1);
842	}
843		1405
		1406	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1407	}
		1408
844	void	1409	void
845	ev_periodic_stop (struct ev_periodic *w)	1410	ev_periodic_stop (EV_P_ struct ev_periodic *w)
846	{	1411	{
847	ev_clear ((W)w);	1412	ev_clear_pending (EV_A_ (W)w);
848	if (!ev_is_active (w))	1413	if (!ev_is_active (w))
849	return;	1414	return;
850		1415
		1416	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1417
851	if (w->active < periodiccnt--)	1418	if (((W)w)->active < periodiccnt--)
852	{	1419	{
853	periodics [w->active - 1] = periodics [periodiccnt];	1420	periodics [((W)w)->active - 1] = periodics [periodiccnt];
854	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1421	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
855	}	1422	}
856		1423
857	ev_stop ((W)w);	1424	ev_stop (EV_A_ (W)w);
858	}	1425	}
859		1426
860	void	1427	void
		1428	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1429	{
		1430	/* TODO: use adjustheap and recalculation */
		1431	ev_periodic_stop (EV_A_ w);
		1432	ev_periodic_start (EV_A_ w);
		1433	}
		1434	#endif
		1435
		1436	void
861	ev_signal_start (struct ev_signal *w)	1437	ev_idle_start (EV_P_ struct ev_idle *w)
862	{	1438	{
863	if (ev_is_active (w))	1439	if (ev_is_active (w))
864	return;	1440	return;
865		1441
		1442	ev_start (EV_A_ (W)w, ++idlecnt);
		1443	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1444	idles [idlecnt - 1] = w;
		1445	}
		1446
		1447	void
		1448	ev_idle_stop (EV_P_ struct ev_idle *w)
		1449	{
		1450	ev_clear_pending (EV_A_ (W)w);
		1451	if (!ev_is_active (w))
		1452	return;
		1453
		1454	idles [((W)w)->active - 1] = idles [--idlecnt];
		1455	ev_stop (EV_A_ (W)w);
		1456	}
		1457
		1458	void
		1459	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1460	{
		1461	if (ev_is_active (w))
		1462	return;
		1463
		1464	ev_start (EV_A_ (W)w, ++preparecnt);
		1465	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1466	prepares [preparecnt - 1] = w;
		1467	}
		1468
		1469	void
		1470	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1471	{
		1472	ev_clear_pending (EV_A_ (W)w);
		1473	if (!ev_is_active (w))
		1474	return;
		1475
		1476	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1477	ev_stop (EV_A_ (W)w);
		1478	}
		1479
		1480	void
		1481	ev_check_start (EV_P_ struct ev_check *w)
		1482	{
		1483	if (ev_is_active (w))
		1484	return;
		1485
		1486	ev_start (EV_A_ (W)w, ++checkcnt);
		1487	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1488	checks [checkcnt - 1] = w;
		1489	}
		1490
		1491	void
		1492	ev_check_stop (EV_P_ struct ev_check *w)
		1493	{
		1494	ev_clear_pending (EV_A_ (W)w);
		1495	if (!ev_is_active (w))
		1496	return;
		1497
		1498	checks [((W)w)->active - 1] = checks [--checkcnt];
		1499	ev_stop (EV_A_ (W)w);
		1500	}
		1501
		1502	#ifndef SA_RESTART
		1503	# define SA_RESTART 0
		1504	#endif
		1505
		1506	void
		1507	ev_signal_start (EV_P_ struct ev_signal *w)
		1508	{
		1509	#if EV_MULTIPLICITY
		1510	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1511	#endif
		1512	if (ev_is_active (w))
		1513	return;
		1514
		1515	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1516
866	ev_start ((W)w, 1);	1517	ev_start (EV_A_ (W)w, 1);
867	array_needsize (signals, signalmax, w->signum, signals_init);	1518	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
868	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1519	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
869		1520
870	if (!w->next)	1521	if (!((WL)w)->next)
871	{	1522	{
		1523	#if _WIN32
		1524	signal (w->signum, sighandler);
		1525	#else
872	struct sigaction sa;	1526	struct sigaction sa;
873	sa.sa_handler = sighandler;	1527	sa.sa_handler = sighandler;
874	sigfillset (&sa.sa_mask);	1528	sigfillset (&sa.sa_mask);
875	sa.sa_flags = 0;	1529	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
876	sigaction (w->signum, &sa, 0);	1530	sigaction (w->signum, &sa, 0);
		1531	#endif
877	}	1532	}
878	}	1533	}
879		1534
880	void	1535	void
881	ev_signal_stop (struct ev_signal *w)	1536	ev_signal_stop (EV_P_ struct ev_signal *w)
882	{	1537	{
883	ev_clear ((W)w);	1538	ev_clear_pending (EV_A_ (W)w);
884	if (!ev_is_active (w))	1539	if (!ev_is_active (w))
885	return;	1540	return;
886		1541
887	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1542	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
888	ev_stop ((W)w);	1543	ev_stop (EV_A_ (W)w);
889		1544
890	if (!signals [w->signum - 1].head)	1545	if (!signals [w->signum - 1].head)
891	signal (w->signum, SIG_DFL);	1546	signal (w->signum, SIG_DFL);
892	}	1547	}
893		1548
894	void	1549	void
895	ev_idle_start (struct ev_idle *w)	1550	ev_child_start (EV_P_ struct ev_child *w)
896	{	1551	{
		1552	#if EV_MULTIPLICITY
		1553	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1554	#endif
897	if (ev_is_active (w))	1555	if (ev_is_active (w))
898	return;	1556	return;
899		1557
900	ev_start ((W)w, ++idlecnt);
901	array_needsize (idles, idlemax, idlecnt, );
902	idles [idlecnt - 1] = w;
903	}
904
905	void
906	ev_idle_stop (struct ev_idle *w)
907	{
908	ev_clear ((W)w);
909	if (ev_is_active (w))
910	return;
911
912	idles [w->active - 1] = idles [--idlecnt];
913	ev_stop ((W)w);
914	}
915
916	void
917	ev_prepare_start (struct ev_prepare *w)
918	{
919	if (ev_is_active (w))
920	return;
921
922	ev_start ((W)w, ++preparecnt);
923	array_needsize (prepares, preparemax, preparecnt, );
924	prepares [preparecnt - 1] = w;
925	}
926
927	void
928	ev_prepare_stop (struct ev_prepare *w)
929	{
930	ev_clear ((W)w);
931	if (ev_is_active (w))
932	return;
933
934	prepares [w->active - 1] = prepares [--preparecnt];
935	ev_stop ((W)w);
936	}
937
938	void
939	ev_check_start (struct ev_check *w)
940	{
941	if (ev_is_active (w))
942	return;
943
944	ev_start ((W)w, ++checkcnt);
945	array_needsize (checks, checkmax, checkcnt, );
946	checks [checkcnt - 1] = w;
947	}
948
949	void
950	ev_check_stop (struct ev_check *w)
951	{
952	ev_clear ((W)w);
953	if (ev_is_active (w))
954	return;
955
956	checks [w->active - 1] = checks [--checkcnt];
957	ev_stop ((W)w);
958	}
959
960	void
961	ev_child_start (struct ev_child *w)
962	{
963	if (ev_is_active (w))
964	return;
965
966	ev_start ((W)w, 1);	1558	ev_start (EV_A_ (W)w, 1);
967	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1559	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
968	}	1560	}
969		1561
970	void	1562	void
971	ev_child_stop (struct ev_child *w)	1563	ev_child_stop (EV_P_ struct ev_child *w)
972	{	1564	{
973	ev_clear ((W)w);	1565	ev_clear_pending (EV_A_ (W)w);
974	if (ev_is_active (w))	1566	if (!ev_is_active (w))
975	return;	1567	return;
976		1568
977	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1569	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
978	ev_stop ((W)w);	1570	ev_stop (EV_A_ (W)w);
979	}	1571	}
980		1572
981	/*****************************************************************************/	1573	/*****************************************************************************/
982		1574
983	struct ev_once	1575	struct ev_once
…		…
987	void (cb)(int revents, void arg);	1579	void (cb)(int revents, void arg);
988	void *arg;	1580	void *arg;
989	};	1581	};
990		1582
991	static void	1583	static void
992	once_cb (struct ev_once *once, int revents)	1584	once_cb (EV_P_ struct ev_once *once, int revents)
993	{	1585	{
994	void (cb)(int revents, void arg) = once->cb;	1586	void (cb)(int revents, void arg) = once->cb;
995	void *arg = once->arg;	1587	void *arg = once->arg;
996		1588
997	ev_io_stop (&once->io);	1589	ev_io_stop (EV_A_ &once->io);
998	ev_timer_stop (&once->to);	1590	ev_timer_stop (EV_A_ &once->to);
999	free (once);	1591	ev_free (once);
1000		1592
1001	cb (revents, arg);	1593	cb (revents, arg);
1002	}	1594	}
1003		1595
1004	static void	1596	static void
1005	once_cb_io (struct ev_io *w, int revents)	1597	once_cb_io (EV_P_ struct ev_io *w, int revents)
1006	{	1598	{
1007	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1599	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1008	}	1600	}
1009		1601
1010	static void	1602	static void
1011	once_cb_to (struct ev_timer *w, int revents)	1603	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1012	{	1604	{
1013	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1605	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1014	}	1606	}
1015		1607
1016	void	1608	void
1017	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1609	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1018	{	1610	{
1019	struct ev_once *once = malloc (sizeof (struct ev_once));	1611	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1020		1612
1021	if (!once)	1613	if (!once)
1022	cb (EV_ERROR, arg);	1614	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1023	else	1615	else
1024	{	1616	{
1025	once->cb = cb;	1617	once->cb = cb;
1026	once->arg = arg;	1618	once->arg = arg;
1027		1619
1028	ev_watcher_init (&once->io, once_cb_io);	1620	ev_init (&once->io, once_cb_io);
1029
1030	if (fd >= 0)	1621	if (fd >= 0)
1031	{	1622	{
1032	ev_io_set (&once->io, fd, events);	1623	ev_io_set (&once->io, fd, events);
1033	ev_io_start (&once->io);	1624	ev_io_start (EV_A_ &once->io);
1034	}	1625	}
1035		1626
1036	ev_watcher_init (&once->to, once_cb_to);	1627	ev_init (&once->to, once_cb_to);
1037
1038	if (timeout >= 0.)	1628	if (timeout >= 0.)
1039	{	1629	{
1040	ev_timer_set (&once->to, timeout, 0.);	1630	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1631	ev_timer_start (EV_A_ &once->to);
1042	}	1632	}
1043	}	1633	}
1044	}	1634	}
1045		1635
1046	/*****************************************************************************/	1636	#ifdef __cplusplus
1047
1048	#if 0
1049
1050	struct ev_io wio;
1051
1052	static void
1053	sin_cb (struct ev_io *w, int revents)
1054	{
1055	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1056	}	1637	}
1057
1058	static void
1059	ocb (struct ev_timer *w, int revents)
1060	{
1061	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1062	ev_timer_stop (w);
1063	ev_timer_start (w);
1064	}
1065
1066	static void
1067	scb (struct ev_signal *w, int revents)
1068	{
1069	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1070	ev_io_stop (&wio);
1071	ev_io_start (&wio);
1072	}
1073
1074	static void
1075	gcb (struct ev_signal *w, int revents)
1076	{
1077	fprintf (stderr, "generic %x\n", revents);
1078
1079	}
1080
1081	int main (void)
1082	{
1083	ev_init (0);
1084
1085	ev_io_init (&wio, sin_cb, 0, EV_READ);
1086	ev_io_start (&wio);
1087
1088	struct ev_timer t[10000];
1089
1090	#if 0
1091	int i;
1092	for (i = 0; i < 10000; ++i)
1093	{
1094	struct ev_timer *w = t + i;
1095	ev_watcher_init (w, ocb, i);
1096	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1097	ev_timer_start (w);
1098	if (drand48 () < 0.5)
1099	ev_timer_stop (w);
1100	}
1101	#endif	1638	#endif
1102		1639
1103	struct ev_timer t1;
1104	ev_timer_init (&t1, ocb, 5, 10);
1105	ev_timer_start (&t1);
1106
1107	struct ev_signal sig;
1108	ev_signal_init (&sig, scb, SIGQUIT);
1109	ev_signal_start (&sig);
1110
1111	struct ev_check cw;
1112	ev_check_init (&cw, gcb);
1113	ev_check_start (&cw);
1114
1115	struct ev_idle iw;
1116	ev_idle_init (&iw, gcb);
1117	ev_idle_start (&iw);
1118
1119	ev_loop (0);
1120
1121	return 0;
1122	}
1123
1124	#endif
1125
1126
1127
1128

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Comparing libev/ev.c (file contents): Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs. Revision 1.104 by root, Mon Nov 12 00:39:45 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.28 by root, Thu Nov 1 06:48:49 2007 UTC vs.
Revision 1.104 by root, Mon Nov 12 00:39:45 2007 UTC