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

Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs.
Revision 1.105 by root, Mon Nov 12 01:02:09 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) && !defined (__APPLE__)
		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) && !defined (__APPLE__)
		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	#ifndef CLOCK_MONOTONIC
		126	# undef EV_USE_MONOTONIC
		127	# define EV_USE_MONOTONIC 0
		128	#endif
		129
63	#ifndef CLOCK_REALTIME	130	#ifndef CLOCK_REALTIME
		131	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	132	# define EV_USE_REALTIME 0
65	#endif	133	#endif
66	#ifndef EV_USE_REALTIME	134
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	135	#if EV_SELECT_IS_WINSOCKET
		136	# include <winsock.h>
68	#endif	137	#endif
		138
		139	/**/
69		140
70	#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) */
71	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	142	#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 */	143	#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 */	144	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
74		145
		146	#ifdef EV_H
		147	# include EV_H
		148	#else
75	#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 */
76		167
77	typedef struct ev_watcher *W;	168	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	169	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	170	typedef struct ev_watcher_time *WT;
80		171
81	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
82	ev_tstamp ev_now;	261	ev_tstamp ev_rt_now;
83	int ev_method;	262	#define VAR(name,decl) static decl;
		263	#include "ev_vars.h"
		264	#undef VAR
84		265
85	static int have_monotonic; /* runtime */	266	static int default_loop;
86		267
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	268	#endif
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		269
91	/*****************************************************************************/	270	/*****************************************************************************/
92		271
93	ev_tstamp	272	ev_tstamp
94	ev_time (void)	273	ev_time (void)
…		…
102	gettimeofday (&tv, 0);	281	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	282	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	283	#endif
105	}	284	}
106		285
107	static ev_tstamp	286	inline ev_tstamp
108	get_clock (void)	287	get_clock (void)
109	{	288	{
110	#if EV_USE_MONOTONIC	289	#if EV_USE_MONOTONIC
111	if (have_monotonic)	290	if (expect_true (have_monotonic))
112	{	291	{
113	struct timespec ts;	292	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	293	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	294	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	295	}
117	#endif	296	#endif
118		297
119	return ev_time ();	298	return ev_time ();
120	}	299	}
121		300
		301	#if EV_MULTIPLICITY
		302	ev_tstamp
		303	ev_now (EV_P)
		304	{
		305	return ev_rt_now;
		306	}
		307	#endif
		308
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	309	#define array_roundsize(type,n) ((n) \| 4 & ~3)
123		310
124	#define array_needsize(base,cur,cnt,init) \	311	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	312	if (expect_false ((cnt) > cur)) \
126	{ \	313	{ \
127	int newcnt = cur; \	314	int newcnt = cur; \
128	do \	315	do \
129	{ \	316	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	317	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	318	} \
132	while ((cnt) > newcnt); \	319	while ((cnt) > newcnt); \
133	\	320	\
134	base = realloc (base, sizeof (base) (newcnt)); \	321	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	322	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	323	cur = newcnt; \
137	}	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;
138		336
139	/*****************************************************************************/	337	/*****************************************************************************/
140
141	typedef struct
142	{
143	struct ev_io *head;
144	int events;
145	} ANFD;
146
147	static ANFD *anfds;
148	static int anfdmax;
149		338
150	static void	339	static void
151	anfds_init (ANFD *base, int count)	340	anfds_init (ANFD *base, int count)
152	{	341	{
153	while (count--)	342	while (count--)
154	{	343	{
155	base->head = 0;	344	base->head = 0;
156	base->events = EV_NONE;	345	base->events = EV_NONE;
		346	base->reify = 0;
		347
157	++base;	348	++base;
158	}	349	}
159	}	350	}
160		351
161	typedef struct	352	void
		353	ev_feed_event (EV_P_ void *w, int revents)
162	{	354	{
163	W w;	355	W w_ = (W)w;
164	int events;
165	} ANPENDING;
166		356
167	static ANPENDING *pendings;
168	static int pendingmax, pendingcnt;
169
170	static void
171	event (W w, int events)
172	{
173	if (w->pending)	357	if (w_->pending)
174	{	358	{
175	pendings [w->pending - 1].events \|= events;	359	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
176	return;	360	return;
177	}	361	}
178		362
179	w->pending = ++pendingcnt;	363	w_->pending = ++pendingcnt [ABSPRI (w_)];
180	array_needsize (pendings, pendingmax, pendingcnt, );	364	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
181	pendings [pendingcnt - 1].w = w;	365	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
182	pendings [pendingcnt - 1].events = events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
183	}	367	}
184		368
185	static void	369	static void
186	queue_events (W *events, int eventcnt, int type)	370	queue_events (EV_P_ W *events, int eventcnt, int type)
187	{	371	{
188	int i;	372	int i;
189		373
190	for (i = 0; i < eventcnt; ++i)	374	for (i = 0; i < eventcnt; ++i)
191	event (events [i], type);	375	ev_feed_event (EV_A_ events [i], type);
192	}	376	}
193		377
194	static void	378	inline void
195	fd_event (int fd, int events)	379	fd_event (EV_P_ int fd, int revents)
196	{	380	{
197	ANFD *anfd = anfds + fd;	381	ANFD *anfd = anfds + fd;
198	struct ev_io *w;	382	struct ev_io *w;
199		383
200	for (w = anfd->head; w; w = w->next)	384	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
201	{	385	{
202	int ev = w->events & events;	386	int ev = w->events & revents;
203		387
204	if (ev)	388	if (ev)
205	event ((W)w, ev);	389	ev_feed_event (EV_A_ (W)w, ev);
206	}	390	}
		391	}
		392
		393	void
		394	ev_feed_fd_event (EV_P_ int fd, int revents)
		395	{
		396	fd_event (EV_A_ fd, revents);
207	}	397	}
208		398
209	/*****************************************************************************/	399	/*****************************************************************************/
210		400
211	static int *fdchanges;
212	static int fdchangemax, fdchangecnt;
213
214	static void	401	static void
215	fd_reify (void)	402	fd_reify (EV_P)
216	{	403	{
217	int i;	404	int i;
218		405
219	for (i = 0; i < fdchangecnt; ++i)	406	for (i = 0; i < fdchangecnt; ++i)
220	{	407	{
…		…
222	ANFD *anfd = anfds + fd;	409	ANFD *anfd = anfds + fd;
223	struct ev_io *w;	410	struct ev_io *w;
224		411
225	int events = 0;	412	int events = 0;
226		413
227	for (w = anfd->head; w; w = w->next)	414	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
228	events \|= w->events;	415	events \|= w->events;
229		416
230	anfd->events &= ~EV_REIFY;	417	#if EV_SELECT_IS_WINSOCKET
231		418	if (events)
232	if (anfd->events != events)
233	{	419	{
234	method_modify (fd, anfd->events, events);	420	unsigned long argp;
235	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));
236	}	423	}
		424	#endif
		425
		426	anfd->reify = 0;
		427
		428	method_modify (EV_A_ fd, anfd->events, events);
		429	anfd->events = events;
237	}	430	}
238		431
239	fdchangecnt = 0;	432	fdchangecnt = 0;
240	}	433	}
241		434
242	static void	435	static void
243	fd_change (int fd)	436	fd_change (EV_P_ int fd)
244	{	437	{
245	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	438	if (anfds [fd].reify)
246	return;	439	return;
247		440
248	anfds [fd].events \|= EV_REIFY;	441	anfds [fd].reify = 1;
249		442
250	++fdchangecnt;	443	++fdchangecnt;
251	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	444	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
252	fdchanges [fdchangecnt - 1] = fd;	445	fdchanges [fdchangecnt - 1] = fd;
253	}	446	}
254		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
255	/* called on EBADF to verify fds */	470	/* called on EBADF to verify fds */
256	static void	471	static void
257	fd_recheck (void)	472	fd_ebadf (EV_P)
258	{	473	{
259	int fd;	474	int fd;
260		475
261	for (fd = 0; fd < anfdmax; ++fd)	476	for (fd = 0; fd < anfdmax; ++fd)
262	if (anfds [fd].events)	477	if (anfds [fd].events)
263	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	478	if (!fd_valid (fd) == -1 && errno == EBADF)
264	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)
265	{	490	{
266	ev_io_stop (anfds [fd].head);	491	fd_kill (EV_A_ fd);
267	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	492	return;
268	}	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	}
269	}	509	}
270		510
271	/*****************************************************************************/	511	/*****************************************************************************/
272		512
273	static struct ev_timer **timers;
274	static int timermax, timercnt;
275
276	static struct ev_periodic **periodics;
277	static int periodicmax, periodiccnt;
278
279	static void	513	static void
280	upheap (WT *timers, int k)	514	upheap (WT *heap, int k)
281	{	515	{
282	WT w = timers [k];	516	WT w = heap [k];
283		517
284	while (k && timers [k >> 1]->at > w->at)	518	while (k && heap [k >> 1]->at > w->at)
285	{	519	{
286	timers [k] = timers [k >> 1];	520	heap [k] = heap [k >> 1];
287	timers [k]->active = k + 1;	521	((W)heap [k])->active = k + 1;
288	k >>= 1;	522	k >>= 1;
289	}	523	}
290		524
291	timers [k] = w;	525	heap [k] = w;
292	timers [k]->active = k + 1;	526	((W)heap [k])->active = k + 1;
293		527
294	}	528	}
295		529
296	static void	530	static void
297	downheap (WT *timers, int N, int k)	531	downheap (WT *heap, int N, int k)
298	{	532	{
299	WT w = timers [k];	533	WT w = heap [k];
300		534
301	while (k < (N >> 1))	535	while (k < (N >> 1))
302	{	536	{
303	int j = k << 1;	537	int j = k << 1;
304		538
305	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	539	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
306	++j;	540	++j;
307		541
308	if (w->at <= timers [j]->at)	542	if (w->at <= heap [j]->at)
309	break;	543	break;
310		544
311	timers [k] = timers [j];	545	heap [k] = heap [j];
312	timers [k]->active = k + 1;	546	((W)heap [k])->active = k + 1;
313	k = j;	547	k = j;
314	}	548	}
315		549
316	timers [k] = w;	550	heap [k] = w;
317	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);
318	}	559	}
319		560
320	/*****************************************************************************/	561	/*****************************************************************************/
321		562
322	typedef struct	563	typedef struct
323	{	564	{
324	struct ev_signal *head;	565	WL head;
325	sig_atomic_t gotsig;	566	sig_atomic_t volatile gotsig;
326	} ANSIG;	567	} ANSIG;
327		568
328	static ANSIG *signals;	569	static ANSIG *signals;
329	static int signalmax;	570	static int signalmax;
330		571
331	static int sigpipe [2];	572	static int sigpipe [2];
332	static sig_atomic_t gotsig;	573	static sig_atomic_t volatile gotsig;
333	static struct ev_io sigev;	574	static struct ev_io sigev;
334		575
335	static void	576	static void
336	signals_init (ANSIG *base, int count)	577	signals_init (ANSIG *base, int count)
337	{	578	{
338	while (count--)	579	while (count--)
339	{	580	{
340	base->head = 0;	581	base->head = 0;
341	base->gotsig = 0;	582	base->gotsig = 0;
		583
342	++base;	584	++base;
343	}	585	}
344	}	586	}
345		587
346	static void	588	static void
347	sighandler (int signum)	589	sighandler (int signum)
348	{	590	{
		591	#if _WIN32
		592	signal (signum, sighandler);
		593	#endif
		594
349	signals [signum - 1].gotsig = 1;	595	signals [signum - 1].gotsig = 1;
350		596
351	if (!gotsig)	597	if (!gotsig)
352	{	598	{
		599	int old_errno = errno;
353	gotsig = 1;	600	gotsig = 1;
354	write (sigpipe [1], &gotsig, 1);	601	write (sigpipe [1], &signum, 1);
		602	errno = old_errno;
355	}	603	}
356	}	604	}
357		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
358	static void	626	static void
359	sigcb (struct ev_io *iow, int revents)	627	sigcb (EV_P_ struct ev_io *iow, int revents)
360	{	628	{
361	struct ev_signal *w;
362	int sig;	629	int signum;
363		630
		631	read (sigpipe [0], &revents, 1);
364	gotsig = 0;	632	gotsig = 0;
365	read (sigpipe [0], &revents, 1);
366		633
367	for (sig = signalmax; sig--; )	634	for (signum = signalmax; signum--; )
368	if (signals [sig].gotsig)	635	if (signals [signum].gotsig)
369	{	636	ev_feed_signal_event (EV_A_ signum + 1);
370	signals [sig].gotsig = 0;
371
372	for (w = signals [sig].head; w; w = w->next)
373	event ((W)w, EV_SIGNAL);
374	}
375	}	637	}
376		638
377	static void	639	inline void
378	siginit (void)	640	fd_intern (int fd)
379	{	641	{
		642	#ifdef _WIN32
		643	int arg = 1;
		644	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		645	#else
380	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	646	fcntl (fd, F_SETFD, FD_CLOEXEC);
381	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
382
383	/* rather than sort out wether we really need nb, set it */
384	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	647	fcntl (fd, F_SETFL, O_NONBLOCK);
385	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]);
386		656
387	ev_io_set (&sigev, sigpipe [0], EV_READ);	657	ev_io_set (&sigev, sigpipe [0], EV_READ);
388	ev_io_start (&sigev);	658	ev_io_start (EV_A_ &sigev);
		659	ev_unref (EV_A); /* child watcher should not keep loop alive */
389	}	660	}
390		661
391	/*****************************************************************************/	662	/*****************************************************************************/
392		663
393	static struct ev_idle **idles;
394	static int idlemax, idlecnt;
395
396	static struct ev_prepare **prepares;
397	static int preparemax, preparecnt;
398
399	static struct ev_check **checks;
400	static int checkmax, checkcnt;
401
402	/*****************************************************************************/
403
404	static struct ev_child *childs [PID_HASHSIZE];	664	static struct ev_child *childs [PID_HASHSIZE];
		665
		666	#ifndef _WIN32
		667
405	static struct ev_signal childev;	668	static struct ev_signal childev;
406		669
407	#ifndef WCONTINUED	670	#ifndef WCONTINUED
408	# define WCONTINUED 0	671	# define WCONTINUED 0
409	#endif	672	#endif
410		673
411	static void	674	static void
412	childcb (struct ev_signal *sw, int revents)	675	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
413	{	676	{
414	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	{
415	int pid, status;	692	int pid, status;
416		693
417	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	694	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
418	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	695	{
419	if (w->pid == pid \|\| w->pid == -1)	696	/* make sure we are called again until all childs have been reaped */
420	{	697	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
421	w->status = status;	698
422	event ((W)w, EV_CHILD);	699	child_reap (EV_A_ sw, pid, pid, status);
423	}	700	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		701	}
424	}	702	}
		703
		704	#endif
425		705
426	/*****************************************************************************/	706	/*****************************************************************************/
427		707
		708	#if EV_USE_KQUEUE
		709	# include "ev_kqueue.c"
		710	#endif
428	#if EV_USE_EPOLL	711	#if EV_USE_EPOLL
429	# include "ev_epoll.c"	712	# include "ev_epoll.c"
430	#endif	713	#endif
		714	#if EV_USE_POLL
		715	# include "ev_poll.c"
		716	#endif
431	#if EV_USE_SELECT	717	#if EV_USE_SELECT
432	# include "ev_select.c"	718	# include "ev_select.c"
433	#endif	719	#endif
434		720
435	int	721	int
…		…
442	ev_version_minor (void)	728	ev_version_minor (void)
443	{	729	{
444	return EV_VERSION_MINOR;	730	return EV_VERSION_MINOR;
445	}	731	}
446		732
447	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)
448	{	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	{
449	if (!ev_method)	754	if (!method)
450	{	755	{
451	#if EV_USE_MONOTONIC	756	#if EV_USE_MONOTONIC
452	{	757	{
453	struct timespec ts;	758	struct timespec ts;
454	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	759	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
455	have_monotonic = 1;	760	have_monotonic = 1;
456	}	761	}
457	#endif	762	#endif
458		763
459	ev_now = ev_time ();	764	ev_rt_now = ev_time ();
460	now = get_clock ();	765	mn_now = get_clock ();
		766	now_floor = mn_now;
461	diff = ev_now - now;	767	rtmn_diff = ev_rt_now - mn_now;
462		768
463	if (pipe (sigpipe))	769	if (methods == EVMETHOD_AUTO)
464	return 0;	770	if (!enable_secure () && getenv ("LIBEV_METHODS"))
465		771	methods = atoi (getenv ("LIBEV_METHODS"));
		772	else
466	ev_method = EVMETHOD_NONE;	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
467	#if EV_USE_EPOLL	779	#if EV_USE_EPOLL
468	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	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);
469	#endif	784	#endif
470	#if EV_USE_SELECT	785	#if EV_USE_SELECT
471	if (ev_method == EVMETHOD_NONE) select_init (flags);	786	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
472	#endif	787	#endif
473		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])
		895	if (pipe (sigpipe))
		896	return 0;
		897
		898	if (!default_loop)
		899	{
		900	#if EV_MULTIPLICITY
		901	struct ev_loop *loop = default_loop = &default_loop_struct;
		902	#else
		903	default_loop = 1;
		904	#endif
		905
		906	loop_init (EV_A_ methods);
		907
474	if (ev_method)	908	if (ev_method (EV_A))
475	{	909	{
476	ev_watcher_init (&sigev, sigcb);
477	siginit ();	910	siginit (EV_A);
478		911
		912	#ifndef _WIN32
479	ev_signal_init (&childev, childcb, SIGCHLD);	913	ev_signal_init (&childev, childcb, SIGCHLD);
		914	ev_set_priority (&childev, EV_MAXPRI);
480	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
481	}	918	}
		919	else
		920	default_loop = 0;
482	}	921	}
483		922
484	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;
485	}	956	}
486		957
487	/*****************************************************************************/	958	/*****************************************************************************/
488		959
489	void
490	ev_prefork (void)
491	{
492	/* nop */
493	}
494
495	void
496	ev_postfork_parent (void)
497	{
498	/* nop */
499	}
500
501	void
502	ev_postfork_child (void)
503	{
504	#if EV_USE_EPOLL
505	if (ev_method == EVMETHOD_EPOLL)
506	epoll_postfork_child ();
507	#endif
508
509	ev_io_stop (&sigev);
510	close (sigpipe [0]);
511	close (sigpipe [1]);
512	pipe (sigpipe);
513	siginit ();
514	}
515
516	/*****************************************************************************/
517
518	static void	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
519	call_pending (void)	973	call_pending (EV_P)
520	{	974	{
		975	int pri;
		976
		977	for (pri = NUMPRI; pri--; )
521	while (pendingcnt)	978	while (pendingcnt [pri])
522	{	979	{
523	ANPENDING *p = pendings + --pendingcnt;	980	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
524		981
525	if (p->w)	982	if (p->w)
526	{	983	{
527	p->w->pending = 0;	984	p->w->pending = 0;
528	p->w->cb (p->w, p->events);	985	EV_CB_INVOKE (p->w, p->events);
529	}	986	}
530	}	987	}
531	}	988	}
532		989
533	static void	990	static void
534	timers_reify (void)	991	timers_reify (EV_P)
535	{	992	{
536	while (timercnt && timers [0]->at <= now)	993	while (timercnt && ((WT)timers [0])->at <= mn_now)
537	{	994	{
538	struct ev_timer *w = timers [0];	995	struct ev_timer *w = timers [0];
		996
		997	assert (("inactive timer on timer heap detected", ev_is_active (w)));
539		998
540	/* first reschedule or stop timer */	999	/* first reschedule or stop timer */
541	if (w->repeat)	1000	if (w->repeat)
542	{	1001	{
		1002	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1003
543	w->at = now + w->repeat;	1004	((WT)w)->at += w->repeat;
544	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
545	downheap ((WT *)timers, timercnt, 0);	1008	downheap ((WT *)timers, timercnt, 0);
546	}	1009	}
547	else	1010	else
548	ev_timer_stop (w); /* nonrepeating: stop timer */	1011	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
549		1012
550	event ((W)w, EV_TIMEOUT);	1013	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
551	}	1014	}
552	}	1015	}
553		1016
		1017	#if EV_PERIODICS
554	static void	1018	static void
555	periodics_reify (void)	1019	periodics_reify (EV_P)
556	{	1020	{
557	while (periodiccnt && periodics [0]->at <= ev_now)	1021	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
558	{	1022	{
559	struct ev_periodic *w = periodics [0];	1023	struct ev_periodic *w = periodics [0];
560		1024
		1025	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1026
561	/* first reschedule or stop timer */	1027	/* first reschedule or stop timer */
562	if (w->interval)	1028	if (w->reschedule_cb)
563	{	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	{
564	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;
565	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));
566	downheap ((WT *)periodics, periodiccnt, 0);	1039	downheap ((WT *)periodics, periodiccnt, 0);
567	}	1040	}
568	else	1041	else
569	ev_periodic_stop (w); /* nonrepeating: stop timer */	1042	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
570		1043
571	event ((W)w, EV_TIMEOUT);	1044	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
572	}	1045	}
573	}	1046	}
574		1047
575	static void	1048	static void
576	periodics_reschedule (ev_tstamp diff)	1049	periodics_reschedule (EV_P)
577	{	1050	{
578	int i;	1051	int i;
579		1052
580	/* adjust periodics after time jump */	1053	/* adjust periodics after time jump */
581	for (i = 0; i < periodiccnt; ++i)	1054	for (i = 0; i < periodiccnt; ++i)
582	{	1055	{
583	struct ev_periodic *w = periodics [i];	1056	struct ev_periodic *w = periodics [i];
584		1057
		1058	if (w->reschedule_cb)
		1059	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
585	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))
586	{	1097	{
587	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1098	ev_tstamp odiff = rtmn_diff;
588		1099
589	if (fabs (diff) >= 1e-4)	1100	for (i = 4; --i; ) /* loop a few times, before making important decisions */
590	{	1101	{
591	ev_periodic_stop (w);	1102	rtmn_diff = ev_rt_now - mn_now;
592	ev_periodic_start (w);
593		1103
594	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;
595	}	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) */
596	}	1117	}
597	}	1118	}
598	}	1119	else
599		1120	#endif
600	static void	1121	{
601	time_update (void)
602	{
603	int i;
604
605	ev_now = ev_time ();	1122	ev_rt_now = ev_time ();
606		1123
607	if (have_monotonic)	1124	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
608	{
609	ev_tstamp odiff = diff;
610
611	for (i = 4; --i; ) /* loop a few times, before making important decisions */
612	{	1125	{
613	now = get_clock ();	1126	#if EV_PERIODICS
614	diff = ev_now - now;
615
616	if (fabs (odiff - diff) < MIN_TIMEJUMP)
617	return; /* all is well */
618
619	ev_now = ev_time ();
620	}
621
622	periodics_reschedule (diff - odiff);
623	/* no timer adjustment, as the monotonic clock doesn't jump */
624	}
625	else
626	{
627	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
628	{
629	periodics_reschedule (ev_now - now);	1127	periodics_reschedule (EV_A);
		1128	#endif
630		1129
631	/* 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 */
632	for (i = 0; i < timercnt; ++i)	1131	for (i = 0; i < timercnt; ++i)
633	timers [i]->at += diff;	1132	((WT)timers [i])->at += ev_rt_now - mn_now;
634	}	1133	}
635		1134
636	now = ev_now;	1135	mn_now = ev_rt_now;
637	}	1136	}
638	}	1137	}
639		1138
640	int ev_loop_done;	1139	void
		1140	ev_ref (EV_P)
		1141	{
		1142	++activecnt;
		1143	}
641		1144
		1145	void
		1146	ev_unref (EV_P)
		1147	{
		1148	--activecnt;
		1149	}
		1150
		1151	static int loop_done;
		1152
		1153	void
642	void ev_loop (int flags)	1154	ev_loop (EV_P_ int flags)
643	{	1155	{
644	double block;	1156	double block;
645	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1157	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
646		1158
647	do	1159	do
648	{	1160	{
649	/* queue check watchers (and execute them) */	1161	/* queue check watchers (and execute them) */
650	if (preparecnt)	1162	if (expect_false (preparecnt))
651	{	1163	{
652	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1164	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
653	call_pending ();	1165	call_pending (EV_A);
654	}	1166	}
655		1167
		1168	/* we might have forked, so reify kernel state if necessary */
		1169	if (expect_false (postfork))
		1170	loop_fork (EV_A);
		1171
656	/* update fd-related kernel structures */	1172	/* update fd-related kernel structures */
657	fd_reify ();	1173	fd_reify (EV_A);
658		1174
659	/* calculate blocking time */	1175	/* calculate blocking time */
660		1176
661	/* 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
662	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	{
663	ev_now = ev_time ();	1185	ev_rt_now = ev_time ();
		1186	mn_now = ev_rt_now;
		1187	}
664		1188
665	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1189	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
666	block = 0.;	1190	block = 0.;
667	else	1191	else
668	{	1192	{
669	block = MAX_BLOCKTIME;	1193	block = MAX_BLOCKTIME;
670		1194
671	if (timercnt)	1195	if (timercnt)
672	{	1196	{
673	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;
674	if (block > to) block = to;	1198	if (block > to) block = to;
675	}	1199	}
676		1200
		1201	#if EV_PERIODICS
677	if (periodiccnt)	1202	if (periodiccnt)
678	{	1203	{
679	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1204	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
680	if (block > to) block = to;	1205	if (block > to) block = to;
681	}	1206	}
		1207	#endif
682		1208
683	if (block < 0.) block = 0.;	1209	if (block < 0.) block = 0.;
684	}	1210	}
685		1211
686	method_poll (block);	1212	method_poll (EV_A_ block);
687		1213
688	/* update ev_now, do magic */	1214	/* update ev_rt_now, do magic */
689	time_update ();	1215	time_update (EV_A);
690		1216
691	/* queue pending timers and reschedule them */	1217	/* queue pending timers and reschedule them */
692	timers_reify (); /* relative timers called last */	1218	timers_reify (EV_A); /* relative timers called last */
		1219	#if EV_PERIODICS
693	periodics_reify (); /* absolute timers called first */	1220	periodics_reify (EV_A); /* absolute timers called first */
		1221	#endif
694		1222
695	/* queue idle watchers unless io or timers are pending */	1223	/* queue idle watchers unless io or timers are pending */
696	if (!pendingcnt)	1224	if (idlecnt && !any_pending (EV_A))
697	queue_events ((W *)idles, idlecnt, EV_IDLE);	1225	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
698		1226
699	/* queue check watchers, to be executed first */	1227	/* queue check watchers, to be executed first */
700	if (checkcnt)	1228	if (checkcnt)
701	queue_events ((W *)checks, checkcnt, EV_CHECK);	1229	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
702		1230
703	call_pending ();	1231	call_pending (EV_A);
704	}	1232	}
705	while (!ev_loop_done);	1233	while (activecnt && !loop_done);
706		1234
707	if (ev_loop_done != 2)	1235	if (loop_done != 2)
708	ev_loop_done = 0;	1236	loop_done = 0;
		1237	}
		1238
		1239	void
		1240	ev_unloop (EV_P_ int how)
		1241	{
		1242	loop_done = how;
709	}	1243	}
710		1244
711	/*****************************************************************************/	1245	/*****************************************************************************/
712		1246
713	static void	1247	inline void
714	wlist_add (WL *head, WL elem)	1248	wlist_add (WL *head, WL elem)
715	{	1249	{
716	elem->next = *head;	1250	elem->next = *head;
717	*head = elem;	1251	*head = elem;
718	}	1252	}
719		1253
720	static void	1254	inline void
721	wlist_del (WL *head, WL elem)	1255	wlist_del (WL *head, WL elem)
722	{	1256	{
723	while (*head)	1257	while (*head)
724	{	1258	{
725	if (*head == elem)	1259	if (*head == elem)
…		…
730		1264
731	head = &(*head)->next;	1265	head = &(*head)->next;
732	}	1266	}
733	}	1267	}
734		1268
735	static void	1269	inline void
736	ev_clear (W w)	1270	ev_clear_pending (EV_P_ W w)
737	{	1271	{
738	if (w->pending)	1272	if (w->pending)
739	{	1273	{
740	pendings [w->pending - 1].w = 0;	1274	pendings [ABSPRI (w)][w->pending - 1].w = 0;
741	w->pending = 0;	1275	w->pending = 0;
742	}	1276	}
743	}	1277	}
744		1278
745	static void	1279	inline void
746	ev_start (W w, int active)	1280	ev_start (EV_P_ W w, int active)
747	{	1281	{
		1282	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1283	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1284
748	w->active = active;	1285	w->active = active;
		1286	ev_ref (EV_A);
749	}	1287	}
750		1288
751	static void	1289	inline void
752	ev_stop (W w)	1290	ev_stop (EV_P_ W w)
753	{	1291	{
		1292	ev_unref (EV_A);
754	w->active = 0;	1293	w->active = 0;
755	}	1294	}
756		1295
757	/*****************************************************************************/	1296	/*****************************************************************************/
758		1297
759	void	1298	void
760	ev_io_start (struct ev_io *w)	1299	ev_io_start (EV_P_ struct ev_io *w)
761	{	1300	{
		1301	int fd = w->fd;
		1302
762	if (ev_is_active (w))	1303	if (ev_is_active (w))
763	return;	1304	return;
764		1305
765	int fd = w->fd;	1306	assert (("ev_io_start called with negative fd", fd >= 0));
766		1307
767	ev_start ((W)w, 1);	1308	ev_start (EV_A_ (W)w, 1);
768	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1309	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
769	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1310	wlist_add ((WL *)&anfds[fd].head, (WL)w);
770		1311
771	fd_change (fd);	1312	fd_change (EV_A_ fd);
772	}	1313	}
773		1314
774	void	1315	void
775	ev_io_stop (struct ev_io *w)	1316	ev_io_stop (EV_P_ struct ev_io *w)
776	{	1317	{
777	ev_clear ((W)w);	1318	ev_clear_pending (EV_A_ (W)w);
778	if (!ev_is_active (w))	1319	if (!ev_is_active (w))
779	return;	1320	return;
780		1321
		1322	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1323
781	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1324	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
782	ev_stop ((W)w);	1325	ev_stop (EV_A_ (W)w);
783		1326
784	fd_change (w->fd);	1327	fd_change (EV_A_ w->fd);
785	}	1328	}
786		1329
787	void	1330	void
788	ev_timer_start (struct ev_timer *w)	1331	ev_timer_start (EV_P_ struct ev_timer *w)
789	{	1332	{
790	if (ev_is_active (w))	1333	if (ev_is_active (w))
791	return;	1334	return;
792		1335
793	w->at += now;	1336	((WT)w)->at += mn_now;
794		1337
795	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.));
796		1339
797	ev_start ((W)w, ++timercnt);	1340	ev_start (EV_A_ (W)w, ++timercnt);
798	array_needsize (timers, timermax, timercnt, );	1341	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
799	timers [timercnt - 1] = w;	1342	timers [timercnt - 1] = w;
800	upheap ((WT *)timers, timercnt - 1);	1343	upheap ((WT *)timers, timercnt - 1);
801	}
802		1344
		1345	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1346	}
		1347
803	void	1348	void
804	ev_timer_stop (struct ev_timer *w)	1349	ev_timer_stop (EV_P_ struct ev_timer *w)
805	{	1350	{
806	ev_clear ((W)w);	1351	ev_clear_pending (EV_A_ (W)w);
807	if (!ev_is_active (w))	1352	if (!ev_is_active (w))
808	return;	1353	return;
809		1354
		1355	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1356
810	if (w->active < timercnt--)	1357	if (((W)w)->active < timercnt--)
811	{	1358	{
812	timers [w->active - 1] = timers [timercnt];	1359	timers [((W)w)->active - 1] = timers [timercnt];
813	downheap ((WT *)timers, timercnt, w->active - 1);	1360	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
814	}	1361	}
815		1362
816	w->at = w->repeat;	1363	((WT)w)->at -= mn_now;
817		1364
818	ev_stop ((W)w);	1365	ev_stop (EV_A_ (W)w);
819	}	1366	}
820		1367
821	void	1368	void
822	ev_timer_again (struct ev_timer *w)	1369	ev_timer_again (EV_P_ struct ev_timer *w)
823	{	1370	{
824	if (ev_is_active (w))	1371	if (ev_is_active (w))
825	{	1372	{
826	if (w->repeat)	1373	if (w->repeat)
827	{	1374	{
828	w->at = now + w->repeat;	1375	((WT)w)->at = mn_now + w->repeat;
829	downheap ((WT *)timers, timercnt, w->active - 1);	1376	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
830	}	1377	}
831	else	1378	else
832	ev_timer_stop (w);	1379	ev_timer_stop (EV_A_ w);
833	}	1380	}
834	else if (w->repeat)	1381	else if (w->repeat)
835	ev_timer_start (w);	1382	ev_timer_start (EV_A_ w);
836	}	1383	}
837		1384
		1385	#if EV_PERIODICS
838	void	1386	void
839	ev_periodic_start (struct ev_periodic *w)	1387	ev_periodic_start (EV_P_ struct ev_periodic *w)
840	{	1388	{
841	if (ev_is_active (w))	1389	if (ev_is_active (w))
842	return;	1390	return;
843		1391
844	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1392	if (w->reschedule_cb)
845		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.));
846	/* 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 */
847	if (w->interval)
848	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	}
849		1400
850	ev_start ((W)w, ++periodiccnt);	1401	ev_start (EV_A_ (W)w, ++periodiccnt);
851	array_needsize (periodics, periodicmax, periodiccnt, );	1402	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
852	periodics [periodiccnt - 1] = w;	1403	periodics [periodiccnt - 1] = w;
853	upheap ((WT *)periodics, periodiccnt - 1);	1404	upheap ((WT *)periodics, periodiccnt - 1);
854	}
855		1405
		1406	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1407	}
		1408
856	void	1409	void
857	ev_periodic_stop (struct ev_periodic *w)	1410	ev_periodic_stop (EV_P_ struct ev_periodic *w)
858	{	1411	{
859	ev_clear ((W)w);	1412	ev_clear_pending (EV_A_ (W)w);
860	if (!ev_is_active (w))	1413	if (!ev_is_active (w))
861	return;	1414	return;
862		1415
		1416	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1417
863	if (w->active < periodiccnt--)	1418	if (((W)w)->active < periodiccnt--)
864	{	1419	{
865	periodics [w->active - 1] = periodics [periodiccnt];	1420	periodics [((W)w)->active - 1] = periodics [periodiccnt];
866	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1421	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
867	}	1422	}
868		1423
869	ev_stop ((W)w);	1424	ev_stop (EV_A_ (W)w);
870	}	1425	}
871		1426
872	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
873	ev_signal_start (struct ev_signal *w)	1437	ev_idle_start (EV_P_ struct ev_idle *w)
874	{	1438	{
875	if (ev_is_active (w))	1439	if (ev_is_active (w))
876	return;	1440	return;
877		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
878	ev_start ((W)w, 1);	1517	ev_start (EV_A_ (W)w, 1);
879	array_needsize (signals, signalmax, w->signum, signals_init);	1518	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
880	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1519	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
881		1520
882	if (!w->next)	1521	if (!((WL)w)->next)
883	{	1522	{
		1523	#if _WIN32
		1524	signal (w->signum, sighandler);
		1525	#else
884	struct sigaction sa;	1526	struct sigaction sa;
885	sa.sa_handler = sighandler;	1527	sa.sa_handler = sighandler;
886	sigfillset (&sa.sa_mask);	1528	sigfillset (&sa.sa_mask);
887	sa.sa_flags = 0;	1529	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
888	sigaction (w->signum, &sa, 0);	1530	sigaction (w->signum, &sa, 0);
		1531	#endif
889	}	1532	}
890	}	1533	}
891		1534
892	void	1535	void
893	ev_signal_stop (struct ev_signal *w)	1536	ev_signal_stop (EV_P_ struct ev_signal *w)
894	{	1537	{
895	ev_clear ((W)w);	1538	ev_clear_pending (EV_A_ (W)w);
896	if (!ev_is_active (w))	1539	if (!ev_is_active (w))
897	return;	1540	return;
898		1541
899	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1542	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
900	ev_stop ((W)w);	1543	ev_stop (EV_A_ (W)w);
901		1544
902	if (!signals [w->signum - 1].head)	1545	if (!signals [w->signum - 1].head)
903	signal (w->signum, SIG_DFL);	1546	signal (w->signum, SIG_DFL);
904	}	1547	}
905		1548
906	void	1549	void
907	ev_idle_start (struct ev_idle *w)	1550	ev_child_start (EV_P_ struct ev_child *w)
908	{	1551	{
		1552	#if EV_MULTIPLICITY
		1553	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1554	#endif
909	if (ev_is_active (w))	1555	if (ev_is_active (w))
910	return;	1556	return;
911		1557
912	ev_start ((W)w, ++idlecnt);
913	array_needsize (idles, idlemax, idlecnt, );
914	idles [idlecnt - 1] = w;
915	}
916
917	void
918	ev_idle_stop (struct ev_idle *w)
919	{
920	ev_clear ((W)w);
921	if (ev_is_active (w))
922	return;
923
924	idles [w->active - 1] = idles [--idlecnt];
925	ev_stop ((W)w);
926	}
927
928	void
929	ev_prepare_start (struct ev_prepare *w)
930	{
931	if (ev_is_active (w))
932	return;
933
934	ev_start ((W)w, ++preparecnt);
935	array_needsize (prepares, preparemax, preparecnt, );
936	prepares [preparecnt - 1] = w;
937	}
938
939	void
940	ev_prepare_stop (struct ev_prepare *w)
941	{
942	ev_clear ((W)w);
943	if (ev_is_active (w))
944	return;
945
946	prepares [w->active - 1] = prepares [--preparecnt];
947	ev_stop ((W)w);
948	}
949
950	void
951	ev_check_start (struct ev_check *w)
952	{
953	if (ev_is_active (w))
954	return;
955
956	ev_start ((W)w, ++checkcnt);
957	array_needsize (checks, checkmax, checkcnt, );
958	checks [checkcnt - 1] = w;
959	}
960
961	void
962	ev_check_stop (struct ev_check *w)
963	{
964	ev_clear ((W)w);
965	if (ev_is_active (w))
966	return;
967
968	checks [w->active - 1] = checks [--checkcnt];
969	ev_stop ((W)w);
970	}
971
972	void
973	ev_child_start (struct ev_child *w)
974	{
975	if (ev_is_active (w))
976	return;
977
978	ev_start ((W)w, 1);	1558	ev_start (EV_A_ (W)w, 1);
979	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1559	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	}	1560	}
981		1561
982	void	1562	void
983	ev_child_stop (struct ev_child *w)	1563	ev_child_stop (EV_P_ struct ev_child *w)
984	{	1564	{
985	ev_clear ((W)w);	1565	ev_clear_pending (EV_A_ (W)w);
986	if (ev_is_active (w))	1566	if (!ev_is_active (w))
987	return;	1567	return;
988		1568
989	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1569	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
990	ev_stop ((W)w);	1570	ev_stop (EV_A_ (W)w);
991	}	1571	}
992		1572
993	/*****************************************************************************/	1573	/*****************************************************************************/
994		1574
995	struct ev_once	1575	struct ev_once
…		…
999	void (cb)(int revents, void arg);	1579	void (cb)(int revents, void arg);
1000	void *arg;	1580	void *arg;
1001	};	1581	};
1002		1582
1003	static void	1583	static void
1004	once_cb (struct ev_once *once, int revents)	1584	once_cb (EV_P_ struct ev_once *once, int revents)
1005	{	1585	{
1006	void (cb)(int revents, void arg) = once->cb;	1586	void (cb)(int revents, void arg) = once->cb;
1007	void *arg = once->arg;	1587	void *arg = once->arg;
1008		1588
1009	ev_io_stop (&once->io);	1589	ev_io_stop (EV_A_ &once->io);
1010	ev_timer_stop (&once->to);	1590	ev_timer_stop (EV_A_ &once->to);
1011	free (once);	1591	ev_free (once);
1012		1592
1013	cb (revents, arg);	1593	cb (revents, arg);
1014	}	1594	}
1015		1595
1016	static void	1596	static void
1017	once_cb_io (struct ev_io *w, int revents)	1597	once_cb_io (EV_P_ struct ev_io *w, int revents)
1018	{	1598	{
1019	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);
1020	}	1600	}
1021		1601
1022	static void	1602	static void
1023	once_cb_to (struct ev_timer *w, int revents)	1603	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1024	{	1604	{
1025	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);
1026	}	1606	}
1027		1607
1028	void	1608	void
1029	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)
1030	{	1610	{
1031	struct ev_once *once = malloc (sizeof (struct ev_once));	1611	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1032		1612
1033	if (!once)	1613	if (!once)
1034	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1614	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1035	else	1615	else
1036	{	1616	{
1037	once->cb = cb;	1617	once->cb = cb;
1038	once->arg = arg;	1618	once->arg = arg;
1039		1619
1040	ev_watcher_init (&once->io, once_cb_io);	1620	ev_init (&once->io, once_cb_io);
1041	if (fd >= 0)	1621	if (fd >= 0)
1042	{	1622	{
1043	ev_io_set (&once->io, fd, events);	1623	ev_io_set (&once->io, fd, events);
1044	ev_io_start (&once->io);	1624	ev_io_start (EV_A_ &once->io);
1045	}	1625	}
1046		1626
1047	ev_watcher_init (&once->to, once_cb_to);	1627	ev_init (&once->to, once_cb_to);
1048	if (timeout >= 0.)	1628	if (timeout >= 0.)
1049	{	1629	{
1050	ev_timer_set (&once->to, timeout, 0.);	1630	ev_timer_set (&once->to, timeout, 0.);
1051	ev_timer_start (&once->to);	1631	ev_timer_start (EV_A_ &once->to);
1052	}	1632	}
1053	}	1633	}
1054	}	1634	}
1055		1635
1056	/*****************************************************************************/	1636	#ifdef __cplusplus
1057
1058	#if 0
1059
1060	struct ev_io wio;
1061
1062	static void
1063	sin_cb (struct ev_io *w, int revents)
1064	{
1065	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1066	}	1637	}
1067
1068	static void
1069	ocb (struct ev_timer *w, int revents)
1070	{
1071	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1072	ev_timer_stop (w);
1073	ev_timer_start (w);
1074	}
1075
1076	static void
1077	scb (struct ev_signal *w, int revents)
1078	{
1079	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1080	ev_io_stop (&wio);
1081	ev_io_start (&wio);
1082	}
1083
1084	static void
1085	gcb (struct ev_signal *w, int revents)
1086	{
1087	fprintf (stderr, "generic %x\n", revents);
1088
1089	}
1090
1091	int main (void)
1092	{
1093	ev_init (0);
1094
1095	ev_io_init (&wio, sin_cb, 0, EV_READ);
1096	ev_io_start (&wio);
1097
1098	struct ev_timer t[10000];
1099
1100	#if 0
1101	int i;
1102	for (i = 0; i < 10000; ++i)
1103	{
1104	struct ev_timer *w = t + i;
1105	ev_watcher_init (w, ocb, i);
1106	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1107	ev_timer_start (w);
1108	if (drand48 () < 0.5)
1109	ev_timer_stop (w);
1110	}
1111	#endif	1638	#endif
1112		1639
1113	struct ev_timer t1;
1114	ev_timer_init (&t1, ocb, 5, 10);
1115	ev_timer_start (&t1);
1116
1117	struct ev_signal sig;
1118	ev_signal_init (&sig, scb, SIGQUIT);
1119	ev_signal_start (&sig);
1120
1121	struct ev_check cw;
1122	ev_check_init (&cw, gcb);
1123	ev_check_start (&cw);
1124
1125	struct ev_idle iw;
1126	ev_idle_init (&iw, gcb);
1127	ev_idle_start (&iw);
1128
1129	ev_loop (0);
1130
1131	return 0;
1132	}
1133
1134	#endif
1135
1136
1137
1138

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Comparing libev/ev.c (file contents): Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs. Revision 1.105 by root, Mon Nov 12 01:02:09 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.32 by root, Thu Nov 1 09:21:51 2007 UTC vs.
Revision 1.105 by root, Mon Nov 12 01:02:09 2007 UTC