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

Comparing libev/ev.c (file contents):
Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs.
Revision 1.125 by root, Sat Nov 17 02:28:43 2007 UTC

…		…
1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
30	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
		66	# endif
		67
31	#endif	68	#endif
32		69
33	#include <math.h>	70	#include <math.h>
34	#include <stdlib.h>	71	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	72	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	73	#include <stddef.h>
39		74
40	#include <stdio.h>	75	#include <stdio.h>
41		76
42	#include <assert.h>	77	#include <assert.h>
43	#include <errno.h>	78	#include <errno.h>
44	#include <sys/types.h>	79	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	80	#include <time.h>
48		81
		82	#include <signal.h>
		83
		84	#ifndef _WIN32
		85	# include <unistd.h>
		86	# include <sys/time.h>
		87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
		93	# endif
		94	#endif
		95
		96	/**/
		97
49	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 0
52	# endif	100	#endif
		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 0
53	#endif	104	#endif
54		105
55	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
57	#endif	108	#endif
58		109
		110	#ifndef EV_USE_POLL
		111	# ifdef _WIN32
		112	# define EV_USE_POLL 0
		113	# else
		114	# define EV_USE_POLL 1
		115	# endif
		116	#endif
		117
59	#ifndef EV_USE_EPOLL	118	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	119	# define EV_USE_EPOLL 0
61	#endif	120	#endif
62		121
		122	#ifndef EV_USE_KQUEUE
		123	# define EV_USE_KQUEUE 0
		124	#endif
		125
		126	#ifndef EV_USE_PORT
		127	# define EV_USE_PORT 0
		128	#endif
		129
		130	/**/
		131
		132	/* darwin simply cannot be helped */
		133	#ifdef __APPLE__
		134	# undef EV_USE_POLL
		135	# undef EV_USE_KQUEUE
		136	#endif
		137
		138	#ifndef CLOCK_MONOTONIC
		139	# undef EV_USE_MONOTONIC
		140	# define EV_USE_MONOTONIC 0
		141	#endif
		142
63	#ifndef CLOCK_REALTIME	143	#ifndef CLOCK_REALTIME
		144	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	145	# define EV_USE_REALTIME 0
65	#endif	146	#endif
66	#ifndef EV_USE_REALTIME	147
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	148	#if EV_SELECT_IS_WINSOCKET
		149	# include <winsock.h>
68	#endif	150	#endif
		151
		152	/**/
69		153
70	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	154	#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) */	155	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
72	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	156	#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 */	157	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
74		158
		159	#ifdef EV_H
		160	# include EV_H
		161	#else
75	#include "ev.h"	162	# include "ev.h"
		163	#endif
		164
		165	#if __GNUC__ >= 3
		166	# define expect(expr,value) __builtin_expect ((expr),(value))
		167	# define inline static inline
		168	#else
		169	# define expect(expr,value) (expr)
		170	# define inline static
		171	#endif
		172
		173	#define expect_false(expr) expect ((expr) != 0, 0)
		174	#define expect_true(expr) expect ((expr) != 0, 1)
		175
		176	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		177	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		178
		179	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		180	#define EMPTY2(a,b) /* used to suppress some warnings */
76		181
77	typedef struct ev_watcher *W;	182	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	183	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	184	typedef struct ev_watcher_time *WT;
80		185
81	static ev_tstamp now, diff; /* monotonic clock */	186	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		187
		188	#ifdef _WIN32
		189	# include "ev_win32.c"
		190	#endif
		191
		192	/*****************************************************************************/
		193
		194	static void (syserr_cb)(const char msg);
		195
		196	void ev_set_syserr_cb (void (cb)(const char msg))
		197	{
		198	syserr_cb = cb;
		199	}
		200
		201	static void
		202	syserr (const char *msg)
		203	{
		204	if (!msg)
		205	msg = "(libev) system error";
		206
		207	if (syserr_cb)
		208	syserr_cb (msg);
		209	else
		210	{
		211	perror (msg);
		212	abort ();
		213	}
		214	}
		215
		216	static void (alloc)(void *ptr, long size);
		217
		218	void ev_set_allocator (void (cb)(void *ptr, long size))
		219	{
		220	alloc = cb;
		221	}
		222
		223	static void *
		224	ev_realloc (void *ptr, long size)
		225	{
		226	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		227
		228	if (!ptr && size)
		229	{
		230	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		231	abort ();
		232	}
		233
		234	return ptr;
		235	}
		236
		237	#define ev_malloc(size) ev_realloc (0, (size))
		238	#define ev_free(ptr) ev_realloc ((ptr), 0)
		239
		240	/*****************************************************************************/
		241
		242	typedef struct
		243	{
		244	WL head;
		245	unsigned char events;
		246	unsigned char reify;
		247	#if EV_SELECT_IS_WINSOCKET
		248	SOCKET handle;
		249	#endif
		250	} ANFD;
		251
		252	typedef struct
		253	{
		254	W w;
		255	int events;
		256	} ANPENDING;
		257
		258	#if EV_MULTIPLICITY
		259
		260	struct ev_loop
		261	{
		262	ev_tstamp ev_rt_now;
		263	#define ev_rt_now ((loop)->ev_rt_now)
		264	#define VAR(name,decl) decl;
		265	#include "ev_vars.h"
		266	#undef VAR
		267	};
		268	#include "ev_wrap.h"
		269
		270	static struct ev_loop default_loop_struct;
		271	struct ev_loop *ev_default_loop_ptr;
		272
		273	#else
		274
82	ev_tstamp ev_now;	275	ev_tstamp ev_rt_now;
83	int ev_method;	276	#define VAR(name,decl) static decl;
		277	#include "ev_vars.h"
		278	#undef VAR
84		279
85	static int have_monotonic; /* runtime */	280	static int ev_default_loop_ptr;
86		281
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	282	#endif
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		283
91	/*****************************************************************************/	284	/*****************************************************************************/
92		285
93	ev_tstamp	286	ev_tstamp
94	ev_time (void)	287	ev_time (void)
…		…
102	gettimeofday (&tv, 0);	295	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	296	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	297	#endif
105	}	298	}
106		299
107	static ev_tstamp	300	inline ev_tstamp
108	get_clock (void)	301	get_clock (void)
109	{	302	{
110	#if EV_USE_MONOTONIC	303	#if EV_USE_MONOTONIC
111	if (have_monotonic)	304	if (expect_true (have_monotonic))
112	{	305	{
113	struct timespec ts;	306	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	307	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	308	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	309	}
117	#endif	310	#endif
118		311
119	return ev_time ();	312	return ev_time ();
120	}	313	}
121		314
		315	#if EV_MULTIPLICITY
		316	ev_tstamp
		317	ev_now (EV_P)
		318	{
		319	return ev_rt_now;
		320	}
		321	#endif
		322
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	323	#define array_roundsize(type,n) (((n) \| 4) & ~3)
123		324
124	#define array_needsize(base,cur,cnt,init) \	325	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	326	if (expect_false ((cnt) > cur)) \
126	{ \	327	{ \
127	int newcnt = cur; \	328	int newcnt = cur; \
128	do \	329	do \
129	{ \	330	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	331	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	332	} \
132	while ((cnt) > newcnt); \	333	while ((cnt) > newcnt); \
133	\	334	\
134	base = realloc (base, sizeof (base) (newcnt)); \	335	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	336	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	337	cur = newcnt; \
137	}	338	}
		339
		340	#define array_slim(type,stem) \
		341	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		342	{ \
		343	stem ## max = array_roundsize (stem ## cnt >> 1); \
		344	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		345	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		346	}
		347
		348	#define array_free(stem, idx) \
		349	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		350
139	/*****************************************************************************/	351	/*****************************************************************************/
140
141	typedef struct
142	{
143	struct ev_io *head;
144	unsigned char events;
145	unsigned char reify;
146	} ANFD;
147
148	static ANFD *anfds;
149	static int anfdmax;
150		352
151	static void	353	static void
152	anfds_init (ANFD *base, int count)	354	anfds_init (ANFD *base, int count)
153	{	355	{
154	while (count--)	356	while (count--)
…		…
159		361
160	++base;	362	++base;
161	}	363	}
162	}	364	}
163		365
164	typedef struct	366	void
		367	ev_feed_event (EV_P_ void *w, int revents)
165	{	368	{
166	W w;	369	W w_ = (W)w;
167	int events;
168	} ANPENDING;
169		370
170	static ANPENDING *pendings;	371	if (expect_false (w_->pending))
171	static int pendingmax, pendingcnt;
172
173	static void
174	event (W w, int events)
175	{
176	if (w->pending)
177	{	372	{
178	pendings [w->pending - 1].events \|= events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
179	return;	374	return;
180	}	375	}
181		376
182	w->pending = ++pendingcnt;	377	w_->pending = ++pendingcnt [ABSPRI (w_)];
183	array_needsize (pendings, pendingmax, pendingcnt, );	378	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
184	pendings [pendingcnt - 1].w = w;	379	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
185	pendings [pendingcnt - 1].events = events;	380	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
186	}	381	}
187		382
188	static void	383	static void
189	queue_events (W *events, int eventcnt, int type)	384	queue_events (EV_P_ W *events, int eventcnt, int type)
190	{	385	{
191	int i;	386	int i;
192		387
193	for (i = 0; i < eventcnt; ++i)	388	for (i = 0; i < eventcnt; ++i)
194	event (events [i], type);	389	ev_feed_event (EV_A_ events [i], type);
195	}	390	}
196		391
197	static void	392	inline void
198	fd_event (int fd, int events)	393	fd_event (EV_P_ int fd, int revents)
199	{	394	{
200	ANFD *anfd = anfds + fd;	395	ANFD *anfd = anfds + fd;
201	struct ev_io *w;	396	struct ev_io *w;
202		397
203	for (w = anfd->head; w; w = w->next)	398	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
204	{	399	{
205	int ev = w->events & events;	400	int ev = w->events & revents;
206		401
207	if (ev)	402	if (ev)
208	event ((W)w, ev);	403	ev_feed_event (EV_A_ (W)w, ev);
209	}	404	}
		405	}
		406
		407	void
		408	ev_feed_fd_event (EV_P_ int fd, int revents)
		409	{
		410	fd_event (EV_A_ fd, revents);
210	}	411	}
211		412
212	/*****************************************************************************/	413	/*****************************************************************************/
213		414
214	static int *fdchanges;	415	inline void
215	static int fdchangemax, fdchangecnt;	416	fd_reify (EV_P)
216
217	static void
218	fd_reify (void)
219	{	417	{
220	int i;	418	int i;
221		419
222	for (i = 0; i < fdchangecnt; ++i)	420	for (i = 0; i < fdchangecnt; ++i)
223	{	421	{
…		…
225	ANFD *anfd = anfds + fd;	423	ANFD *anfd = anfds + fd;
226	struct ev_io *w;	424	struct ev_io *w;
227		425
228	int events = 0;	426	int events = 0;
229		427
230	for (w = anfd->head; w; w = w->next)	428	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
231	events \|= w->events;	429	events \|= w->events;
232		430
		431	#if EV_SELECT_IS_WINSOCKET
		432	if (events)
		433	{
		434	unsigned long argp;
		435	anfd->handle = _get_osfhandle (fd);
		436	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		437	}
		438	#endif
		439
233	anfd->reify = 0;	440	anfd->reify = 0;
234		441
235	if (anfd->events != events)
236	{
237	method_modify (fd, anfd->events, events);	442	method_modify (EV_A_ fd, anfd->events, events);
238	anfd->events = events;	443	anfd->events = events;
239	}
240	}	444	}
241		445
242	fdchangecnt = 0;	446	fdchangecnt = 0;
243	}	447	}
244		448
245	static void	449	static void
246	fd_change (int fd)	450	fd_change (EV_P_ int fd)
247	{	451	{
248	if (anfds [fd].reify \|\| fdchangecnt < 0)	452	if (expect_false (anfds [fd].reify))
249	return;	453	return;
250		454
251	anfds [fd].reify = 1;	455	anfds [fd].reify = 1;
252		456
253	++fdchangecnt;	457	++fdchangecnt;
254	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	458	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
255	fdchanges [fdchangecnt - 1] = fd;	459	fdchanges [fdchangecnt - 1] = fd;
256	}	460	}
257		461
		462	static void
		463	fd_kill (EV_P_ int fd)
		464	{
		465	struct ev_io *w;
		466
		467	while ((w = (struct ev_io *)anfds [fd].head))
		468	{
		469	ev_io_stop (EV_A_ w);
		470	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		471	}
		472	}
		473
		474	inline int
		475	fd_valid (int fd)
		476	{
		477	#ifdef _WIN32
		478	return _get_osfhandle (fd) != -1;
		479	#else
		480	return fcntl (fd, F_GETFD) != -1;
		481	#endif
		482	}
		483
258	/* called on EBADF to verify fds */	484	/* called on EBADF to verify fds */
259	static void	485	static void
260	fd_recheck (void)	486	fd_ebadf (EV_P)
261	{	487	{
262	int fd;	488	int fd;
263		489
264	for (fd = 0; fd < anfdmax; ++fd)	490	for (fd = 0; fd < anfdmax; ++fd)
265	if (anfds [fd].events)	491	if (anfds [fd].events)
266	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	492	if (!fd_valid (fd) == -1 && errno == EBADF)
267	while (anfds [fd].head)	493	fd_kill (EV_A_ fd);
		494	}
		495
		496	/* called on ENOMEM in select/poll to kill some fds and retry */
		497	static void
		498	fd_enomem (EV_P)
		499	{
		500	int fd;
		501
		502	for (fd = anfdmax; fd--; )
		503	if (anfds [fd].events)
268	{	504	{
269	ev_io_stop (anfds [fd].head);	505	fd_kill (EV_A_ fd);
270	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	506	return;
271	}	507	}
		508	}
		509
		510	/* usually called after fork if method needs to re-arm all fds from scratch */
		511	static void
		512	fd_rearm_all (EV_P)
		513	{
		514	int fd;
		515
		516	/* this should be highly optimised to not do anything but set a flag */
		517	for (fd = 0; fd < anfdmax; ++fd)
		518	if (anfds [fd].events)
		519	{
		520	anfds [fd].events = 0;
		521	fd_change (EV_A_ fd);
		522	}
272	}	523	}
273		524
274	/*****************************************************************************/	525	/*****************************************************************************/
275		526
276	static struct ev_timer **timers;
277	static int timermax, timercnt;
278
279	static struct ev_periodic **periodics;
280	static int periodicmax, periodiccnt;
281
282	static void	527	static void
283	upheap (WT *timers, int k)	528	upheap (WT *heap, int k)
284	{	529	{
285	WT w = timers [k];	530	WT w = heap [k];
286		531
287	while (k && timers [k >> 1]->at > w->at)	532	while (k && heap [k >> 1]->at > w->at)
288	{	533	{
289	timers [k] = timers [k >> 1];	534	heap [k] = heap [k >> 1];
290	timers [k]->active = k + 1;	535	((W)heap [k])->active = k + 1;
291	k >>= 1;	536	k >>= 1;
292	}	537	}
293		538
294	timers [k] = w;	539	heap [k] = w;
295	timers [k]->active = k + 1;	540	((W)heap [k])->active = k + 1;
296		541
297	}	542	}
298		543
299	static void	544	static void
300	downheap (WT *timers, int N, int k)	545	downheap (WT *heap, int N, int k)
301	{	546	{
302	WT w = timers [k];	547	WT w = heap [k];
303		548
304	while (k < (N >> 1))	549	while (k < (N >> 1))
305	{	550	{
306	int j = k << 1;	551	int j = k << 1;
307		552
308	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	553	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
309	++j;	554	++j;
310		555
311	if (w->at <= timers [j]->at)	556	if (w->at <= heap [j]->at)
312	break;	557	break;
313		558
314	timers [k] = timers [j];	559	heap [k] = heap [j];
315	timers [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
316	k = j;	561	k = j;
317	}	562	}
318		563
319	timers [k] = w;	564	heap [k] = w;
320	timers [k]->active = k + 1;	565	((W)heap [k])->active = k + 1;
		566	}
		567
		568	inline void
		569	adjustheap (WT *heap, int N, int k)
		570	{
		571	upheap (heap, k);
		572	downheap (heap, N, k);
321	}	573	}
322		574
323	/*****************************************************************************/	575	/*****************************************************************************/
324		576
325	typedef struct	577	typedef struct
326	{	578	{
327	struct ev_signal *head;	579	WL head;
328	sig_atomic_t volatile gotsig;	580	sig_atomic_t volatile gotsig;
329	} ANSIG;	581	} ANSIG;
330		582
331	static ANSIG *signals;	583	static ANSIG *signals;
332	static int signalmax;	584	static int signalmax;
…		…
348	}	600	}
349		601
350	static void	602	static void
351	sighandler (int signum)	603	sighandler (int signum)
352	{	604	{
		605	#if _WIN32
		606	signal (signum, sighandler);
		607	#endif
		608
353	signals [signum - 1].gotsig = 1;	609	signals [signum - 1].gotsig = 1;
354		610
355	if (!gotsig)	611	if (!gotsig)
356	{	612	{
		613	int old_errno = errno;
357	gotsig = 1;	614	gotsig = 1;
358	write (sigpipe [1], &signum, 1);	615	write (sigpipe [1], &signum, 1);
		616	errno = old_errno;
359	}	617	}
360	}	618	}
361		619
		620	void
		621	ev_feed_signal_event (EV_P_ int signum)
		622	{
		623	WL w;
		624
		625	#if EV_MULTIPLICITY
		626	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		627	#endif
		628
		629	--signum;
		630
		631	if (signum < 0 \|\| signum >= signalmax)
		632	return;
		633
		634	signals [signum].gotsig = 0;
		635
		636	for (w = signals [signum].head; w; w = w->next)
		637	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		638	}
		639
362	static void	640	static void
363	sigcb (struct ev_io *iow, int revents)	641	sigcb (EV_P_ struct ev_io *iow, int revents)
364	{	642	{
365	struct ev_signal *w;
366	int sig;	643	int signum;
367		644
368	read (sigpipe [0], &revents, 1);	645	read (sigpipe [0], &revents, 1);
369	gotsig = 0;	646	gotsig = 0;
370		647
371	for (sig = signalmax; sig--; )	648	for (signum = signalmax; signum--; )
372	if (signals [sig].gotsig)	649	if (signals [signum].gotsig)
373	{	650	ev_feed_signal_event (EV_A_ signum + 1);
374	signals [sig].gotsig = 0;
375
376	for (w = signals [sig].head; w; w = w->next)
377	event ((W)w, EV_SIGNAL);
378	}
379	}	651	}
380		652
381	static void	653	static void
382	siginit (void)	654	fd_intern (int fd)
383	{	655	{
		656	#ifdef _WIN32
		657	int arg = 1;
		658	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		659	#else
384	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	660	fcntl (fd, F_SETFD, FD_CLOEXEC);
385	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
386
387	/* rather than sort out wether we really need nb, set it */
388	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	661	fcntl (fd, F_SETFL, O_NONBLOCK);
389	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	662	#endif
		663	}
		664
		665	static void
		666	siginit (EV_P)
		667	{
		668	fd_intern (sigpipe [0]);
		669	fd_intern (sigpipe [1]);
390		670
391	ev_io_set (&sigev, sigpipe [0], EV_READ);	671	ev_io_set (&sigev, sigpipe [0], EV_READ);
392	ev_io_start (&sigev);	672	ev_io_start (EV_A_ &sigev);
		673	ev_unref (EV_A); /* child watcher should not keep loop alive */
393	}	674	}
394		675
395	/*****************************************************************************/	676	/*****************************************************************************/
396		677
397	static struct ev_idle **idles;
398	static int idlemax, idlecnt;
399
400	static struct ev_prepare **prepares;
401	static int preparemax, preparecnt;
402
403	static struct ev_check **checks;
404	static int checkmax, checkcnt;
405
406	/*****************************************************************************/
407
408	static struct ev_child *childs [PID_HASHSIZE];	678	static struct ev_child *childs [PID_HASHSIZE];
		679
		680	#ifndef _WIN32
		681
409	static struct ev_signal childev;	682	static struct ev_signal childev;
410		683
411	#ifndef WCONTINUED	684	#ifndef WCONTINUED
412	# define WCONTINUED 0	685	# define WCONTINUED 0
413	#endif	686	#endif
414		687
415	static void	688	static void
416	childcb (struct ev_signal *sw, int revents)	689	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
417	{	690	{
418	struct ev_child *w;	691	struct ev_child *w;
		692
		693	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		694	if (w->pid == pid \|\| !w->pid)
		695	{
		696	ev_priority (w) = ev_priority (sw); /* need to do it now */
		697	w->rpid = pid;
		698	w->rstatus = status;
		699	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		700	}
		701	}
		702
		703	static void
		704	childcb (EV_P_ struct ev_signal *sw, int revents)
		705	{
419	int pid, status;	706	int pid, status;
420		707
421	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	708	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
422	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	709	{
423	if (w->pid == pid \|\| w->pid == -1)	710	/* make sure we are called again until all childs have been reaped */
424	{	711	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
425	w->status = status;	712
426	event ((W)w, EV_CHILD);	713	child_reap (EV_A_ sw, pid, pid, status);
427	}	714	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		715	}
428	}	716	}
		717
		718	#endif
429		719
430	/*****************************************************************************/	720	/*****************************************************************************/
431		721
		722	#if EV_USE_PORT
		723	# include "ev_port.c"
		724	#endif
		725	#if EV_USE_KQUEUE
		726	# include "ev_kqueue.c"
		727	#endif
432	#if EV_USE_EPOLL	728	#if EV_USE_EPOLL
433	# include "ev_epoll.c"	729	# include "ev_epoll.c"
434	#endif	730	#endif
		731	#if EV_USE_POLL
		732	# include "ev_poll.c"
		733	#endif
435	#if EV_USE_SELECT	734	#if EV_USE_SELECT
436	# include "ev_select.c"	735	# include "ev_select.c"
437	#endif	736	#endif
438		737
439	int	738	int
…		…
446	ev_version_minor (void)	745	ev_version_minor (void)
447	{	746	{
448	return EV_VERSION_MINOR;	747	return EV_VERSION_MINOR;
449	}	748	}
450		749
451	int ev_init (int flags)	750	/* return true if we are running with elevated privileges and should ignore env variables */
		751	static int
		752	enable_secure (void)
452	{	753	{
		754	#ifdef _WIN32
		755	return 0;
		756	#else
		757	return getuid () != geteuid ()
		758	\|\| getgid () != getegid ();
		759	#endif
		760	}
		761
		762	unsigned int
		763	ev_method (EV_P)
		764	{
		765	return method;
		766	}
		767
		768	static void
		769	loop_init (EV_P_ unsigned int flags)
		770	{
453	if (!ev_method)	771	if (!method)
454	{	772	{
455	#if EV_USE_MONOTONIC	773	#if EV_USE_MONOTONIC
456	{	774	{
457	struct timespec ts;	775	struct timespec ts;
458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	776	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
459	have_monotonic = 1;	777	have_monotonic = 1;
460	}	778	}
461	#endif	779	#endif
462		780
463	ev_now = ev_time ();	781	ev_rt_now = ev_time ();
464	now = get_clock ();	782	mn_now = get_clock ();
		783	now_floor = mn_now;
465	diff = ev_now - now;	784	rtmn_diff = ev_rt_now - mn_now;
466		785
467	if (pipe (sigpipe))	786	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
468	return 0;	787	flags = atoi (getenv ("LIBEV_FLAGS"));
469		788
470	ev_method = EVMETHOD_NONE;	789	if (!(flags & 0x0000ffff))
		790	flags \|= 0x0000ffff;
		791
		792	method = 0;
		793	#if EV_USE_PORT
		794	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		795	#endif
		796	#if EV_USE_KQUEUE
		797	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		798	#endif
471	#if EV_USE_EPOLL	799	#if EV_USE_EPOLL
472	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	800	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		801	#endif
		802	#if EV_USE_POLL
		803	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
473	#endif	804	#endif
474	#if EV_USE_SELECT	805	#if EV_USE_SELECT
475	if (ev_method == EVMETHOD_NONE) select_init (flags);	806	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
476	#endif	807	#endif
477		808
		809	ev_init (&sigev, sigcb);
		810	ev_set_priority (&sigev, EV_MAXPRI);
		811	}
		812	}
		813
		814	static void
		815	loop_destroy (EV_P)
		816	{
		817	int i;
		818
		819	#if EV_USE_PORT
		820	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		821	#endif
		822	#if EV_USE_KQUEUE
		823	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		824	#endif
		825	#if EV_USE_EPOLL
		826	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		827	#endif
		828	#if EV_USE_POLL
		829	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		830	#endif
		831	#if EV_USE_SELECT
		832	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		833	#endif
		834
		835	for (i = NUMPRI; i--; )
		836	array_free (pending, [i]);
		837
		838	/* have to use the microsoft-never-gets-it-right macro */
		839	array_free (fdchange, EMPTY0);
		840	array_free (timer, EMPTY0);
		841	#if EV_PERIODICS
		842	array_free (periodic, EMPTY0);
		843	#endif
		844	array_free (idle, EMPTY0);
		845	array_free (prepare, EMPTY0);
		846	array_free (check, EMPTY0);
		847
		848	method = 0;
		849	}
		850
		851	static void
		852	loop_fork (EV_P)
		853	{
		854	#if EV_USE_PORT
		855	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		856	#endif
		857	#if EV_USE_KQUEUE
		858	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		859	#endif
		860	#if EV_USE_EPOLL
		861	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		862	#endif
		863
		864	if (ev_is_active (&sigev))
		865	{
		866	/* default loop */
		867
		868	ev_ref (EV_A);
		869	ev_io_stop (EV_A_ &sigev);
		870	close (sigpipe [0]);
		871	close (sigpipe [1]);
		872
		873	while (pipe (sigpipe))
		874	syserr ("(libev) error creating pipe");
		875
		876	siginit (EV_A);
		877	}
		878
		879	postfork = 0;
		880	}
		881
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *
		884	ev_loop_new (unsigned int flags)
		885	{
		886	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		887
		888	memset (loop, 0, sizeof (struct ev_loop));
		889
		890	loop_init (EV_A_ flags);
		891
		892	if (ev_method (EV_A))
		893	return loop;
		894
		895	return 0;
		896	}
		897
		898	void
		899	ev_loop_destroy (EV_P)
		900	{
		901	loop_destroy (EV_A);
		902	ev_free (loop);
		903	}
		904
		905	void
		906	ev_loop_fork (EV_P)
		907	{
		908	postfork = 1;
		909	}
		910
		911	#endif
		912
		913	#if EV_MULTIPLICITY
		914	struct ev_loop *
		915	ev_default_loop_init (unsigned int flags)
		916	#else
		917	int
		918	ev_default_loop (unsigned int flags)
		919	#endif
		920	{
		921	if (sigpipe [0] == sigpipe [1])
		922	if (pipe (sigpipe))
		923	return 0;
		924
		925	if (!ev_default_loop_ptr)
		926	{
		927	#if EV_MULTIPLICITY
		928	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		929	#else
		930	ev_default_loop_ptr = 1;
		931	#endif
		932
		933	loop_init (EV_A_ flags);
		934
478	if (ev_method)	935	if (ev_method (EV_A))
479	{	936	{
480	ev_watcher_init (&sigev, sigcb);
481	siginit ();	937	siginit (EV_A);
482		938
		939	#ifndef _WIN32
483	ev_signal_init (&childev, childcb, SIGCHLD);	940	ev_signal_init (&childev, childcb, SIGCHLD);
		941	ev_set_priority (&childev, EV_MAXPRI);
484	ev_signal_start (&childev);	942	ev_signal_start (EV_A_ &childev);
		943	ev_unref (EV_A); /* child watcher should not keep loop alive */
		944	#endif
485	}	945	}
		946	else
		947	ev_default_loop_ptr = 0;
486	}	948	}
487		949
488	return ev_method;	950	return ev_default_loop_ptr;
		951	}
		952
		953	void
		954	ev_default_destroy (void)
		955	{
		956	#if EV_MULTIPLICITY
		957	struct ev_loop *loop = ev_default_loop_ptr;
		958	#endif
		959
		960	#ifndef _WIN32
		961	ev_ref (EV_A); /* child watcher */
		962	ev_signal_stop (EV_A_ &childev);
		963	#endif
		964
		965	ev_ref (EV_A); /* signal watcher */
		966	ev_io_stop (EV_A_ &sigev);
		967
		968	close (sigpipe [0]); sigpipe [0] = 0;
		969	close (sigpipe [1]); sigpipe [1] = 0;
		970
		971	loop_destroy (EV_A);
		972	}
		973
		974	void
		975	ev_default_fork (void)
		976	{
		977	#if EV_MULTIPLICITY
		978	struct ev_loop *loop = ev_default_loop_ptr;
		979	#endif
		980
		981	if (method)
		982	postfork = 1;
489	}	983	}
490		984
491	/*****************************************************************************/	985	/*****************************************************************************/
492		986
493	void
494	ev_fork_prepare (void)
495	{
496	/* nop */
497	}
498
499	void
500	ev_fork_parent (void)
501	{
502	/* nop */
503	}
504
505	void
506	ev_fork_child (void)
507	{
508	#if EV_USE_EPOLL
509	if (ev_method == EVMETHOD_EPOLL)
510	epoll_postfork_child ();
511	#endif
512
513	ev_io_stop (&sigev);
514	close (sigpipe [0]);
515	close (sigpipe [1]);
516	pipe (sigpipe);
517	siginit ();
518	}
519
520	/*****************************************************************************/
521
522	static void	987	static int
		988	any_pending (EV_P)
		989	{
		990	int pri;
		991
		992	for (pri = NUMPRI; pri--; )
		993	if (pendingcnt [pri])
		994	return 1;
		995
		996	return 0;
		997	}
		998
		999	inline void
523	call_pending (void)	1000	call_pending (EV_P)
524	{	1001	{
		1002	int pri;
		1003
		1004	for (pri = NUMPRI; pri--; )
525	while (pendingcnt)	1005	while (pendingcnt [pri])
526	{	1006	{
527	ANPENDING *p = pendings + --pendingcnt;	1007	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
528		1008
529	if (p->w)	1009	if (expect_true (p->w))
530	{	1010	{
531	p->w->pending = 0;	1011	p->w->pending = 0;
532	p->w->cb (p->w, p->events);	1012	EV_CB_INVOKE (p->w, p->events);
533	}	1013	}
534	}	1014	}
535	}	1015	}
536		1016
537	static void	1017	inline void
538	timers_reify (void)	1018	timers_reify (EV_P)
539	{	1019	{
540	while (timercnt && timers [0]->at <= now)	1020	while (timercnt && ((WT)timers [0])->at <= mn_now)
541	{	1021	{
542	struct ev_timer *w = timers [0];	1022	struct ev_timer *w = timers [0];
		1023
		1024	assert (("inactive timer on timer heap detected", ev_is_active (w)));
543		1025
544	/* first reschedule or stop timer */	1026	/* first reschedule or stop timer */
545	if (w->repeat)	1027	if (w->repeat)
546	{	1028	{
547	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1029	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1030
548	w->at = now + w->repeat;	1031	((WT)w)->at += w->repeat;
		1032	if (((WT)w)->at < mn_now)
		1033	((WT)w)->at = mn_now;
		1034
549	downheap ((WT *)timers, timercnt, 0);	1035	downheap ((WT *)timers, timercnt, 0);
550	}	1036	}
551	else	1037	else
552	ev_timer_stop (w); /* nonrepeating: stop timer */	1038	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
553		1039
554	event ((W)w, EV_TIMEOUT);	1040	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
555	}	1041	}
556	}	1042	}
557		1043
558	static void	1044	#if EV_PERIODICS
		1045	inline void
559	periodics_reify (void)	1046	periodics_reify (EV_P)
560	{	1047	{
561	while (periodiccnt && periodics [0]->at <= ev_now)	1048	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
562	{	1049	{
563	struct ev_periodic *w = periodics [0];	1050	struct ev_periodic *w = periodics [0];
564		1051
		1052	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1053
565	/* first reschedule or stop timer */	1054	/* first reschedule or stop timer */
566	if (w->interval)	1055	if (w->reschedule_cb)
567	{	1056	{
		1057	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1058	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1059	downheap ((WT *)periodics, periodiccnt, 0);
		1060	}
		1061	else if (w->interval)
		1062	{
568	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1063	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
569	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1064	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
570	downheap ((WT *)periodics, periodiccnt, 0);	1065	downheap ((WT *)periodics, periodiccnt, 0);
571	}	1066	}
572	else	1067	else
573	ev_periodic_stop (w); /* nonrepeating: stop timer */	1068	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
574		1069
575	event ((W)w, EV_PERIODIC);	1070	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
576	}	1071	}
577	}	1072	}
578		1073
579	static void	1074	static void
580	periodics_reschedule (ev_tstamp diff)	1075	periodics_reschedule (EV_P)
581	{	1076	{
582	int i;	1077	int i;
583		1078
584	/* adjust periodics after time jump */	1079	/* adjust periodics after time jump */
585	for (i = 0; i < periodiccnt; ++i)	1080	for (i = 0; i < periodiccnt; ++i)
586	{	1081	{
587	struct ev_periodic *w = periodics [i];	1082	struct ev_periodic *w = periodics [i];
588		1083
		1084	if (w->reschedule_cb)
		1085	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
589	if (w->interval)	1086	else if (w->interval)
		1087	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1088	}
		1089
		1090	/* now rebuild the heap */
		1091	for (i = periodiccnt >> 1; i--; )
		1092	downheap ((WT *)periodics, periodiccnt, i);
		1093	}
		1094	#endif
		1095
		1096	inline int
		1097	time_update_monotonic (EV_P)
		1098	{
		1099	mn_now = get_clock ();
		1100
		1101	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1102	{
		1103	ev_rt_now = rtmn_diff + mn_now;
		1104	return 0;
		1105	}
		1106	else
		1107	{
		1108	now_floor = mn_now;
		1109	ev_rt_now = ev_time ();
		1110	return 1;
		1111	}
		1112	}
		1113
		1114	inline void
		1115	time_update (EV_P)
		1116	{
		1117	int i;
		1118
		1119	#if EV_USE_MONOTONIC
		1120	if (expect_true (have_monotonic))
		1121	{
		1122	if (time_update_monotonic (EV_A))
590	{	1123	{
591	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1124	ev_tstamp odiff = rtmn_diff;
592		1125
593	if (fabs (diff) >= 1e-4)	1126	for (i = 4; --i; ) /* loop a few times, before making important decisions */
594	{	1127	{
595	ev_periodic_stop (w);	1128	rtmn_diff = ev_rt_now - mn_now;
596	ev_periodic_start (w);
597		1129
598	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1130	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1131	return; /* all is well */
		1132
		1133	ev_rt_now = ev_time ();
		1134	mn_now = get_clock ();
		1135	now_floor = mn_now;
599	}	1136	}
		1137
		1138	# if EV_PERIODICS
		1139	periodics_reschedule (EV_A);
		1140	# endif
		1141	/* no timer adjustment, as the monotonic clock doesn't jump */
		1142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
600	}	1143	}
601	}	1144	}
602	}	1145	else
603		1146	#endif
604	static void	1147	{
605	time_update (void)
606	{
607	int i;
608
609	ev_now = ev_time ();	1148	ev_rt_now = ev_time ();
610		1149
611	if (have_monotonic)	1150	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
612	{
613	ev_tstamp odiff = diff;
614
615	for (i = 4; --i; ) /* loop a few times, before making important decisions */
616	{	1151	{
617	now = get_clock ();	1152	#if EV_PERIODICS
618	diff = ev_now - now;
619
620	if (fabs (odiff - diff) < MIN_TIMEJUMP)
621	return; /* all is well */
622
623	ev_now = ev_time ();
624	}
625
626	periodics_reschedule (diff - odiff);
627	/* no timer adjustment, as the monotonic clock doesn't jump */
628	}
629	else
630	{
631	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
632	{
633	periodics_reschedule (ev_now - now);	1153	periodics_reschedule (EV_A);
		1154	#endif
634		1155
635	/* adjust timers. this is easy, as the offset is the same for all */	1156	/* adjust timers. this is easy, as the offset is the same for all */
636	for (i = 0; i < timercnt; ++i)	1157	for (i = 0; i < timercnt; ++i)
637	timers [i]->at += diff;	1158	((WT)timers [i])->at += ev_rt_now - mn_now;
638	}	1159	}
639		1160
640	now = ev_now;	1161	mn_now = ev_rt_now;
641	}	1162	}
642	}	1163	}
643		1164
644	int ev_loop_done;	1165	void
		1166	ev_ref (EV_P)
		1167	{
		1168	++activecnt;
		1169	}
645		1170
		1171	void
		1172	ev_unref (EV_P)
		1173	{
		1174	--activecnt;
		1175	}
		1176
		1177	static int loop_done;
		1178
		1179	void
646	void ev_loop (int flags)	1180	ev_loop (EV_P_ int flags)
647	{	1181	{
648	double block;	1182	double block;
649	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1183	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
650		1184
651	do	1185	while (activecnt)
652	{	1186	{
653	/* queue check watchers (and execute them) */	1187	/* queue check watchers (and execute them) */
654	if (preparecnt)	1188	if (expect_false (preparecnt))
655	{	1189	{
656	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1190	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
657	call_pending ();	1191	call_pending (EV_A);
658	}	1192	}
659		1193
		1194	/* we might have forked, so reify kernel state if necessary */
		1195	if (expect_false (postfork))
		1196	loop_fork (EV_A);
		1197
660	/* update fd-related kernel structures */	1198	/* update fd-related kernel structures */
661	fd_reify ();	1199	fd_reify (EV_A);
662		1200
663	/* calculate blocking time */	1201	/* calculate blocking time */
664		1202
665	/* we only need this for !monotonic clockor timers, but as we basically	1203	/* we only need this for !monotonic clock or timers, but as we basically
666	always have timers, we just calculate it always */	1204	always have timers, we just calculate it always */
		1205	#if EV_USE_MONOTONIC
		1206	if (expect_true (have_monotonic))
		1207	time_update_monotonic (EV_A);
		1208	else
		1209	#endif
		1210	{
667	ev_now = ev_time ();	1211	ev_rt_now = ev_time ();
		1212	mn_now = ev_rt_now;
		1213	}
668		1214
669	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1215	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
670	block = 0.;	1216	block = 0.;
671	else	1217	else
672	{	1218	{
673	block = MAX_BLOCKTIME;	1219	block = MAX_BLOCKTIME;
674		1220
675	if (timercnt)	1221	if (timercnt)
676	{	1222	{
677	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1223	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
678	if (block > to) block = to;	1224	if (block > to) block = to;
679	}	1225	}
680		1226
		1227	#if EV_PERIODICS
681	if (periodiccnt)	1228	if (periodiccnt)
682	{	1229	{
683	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1230	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
684	if (block > to) block = to;	1231	if (block > to) block = to;
685	}	1232	}
		1233	#endif
686		1234
687	if (block < 0.) block = 0.;	1235	if (expect_false (block < 0.)) block = 0.;
688	}	1236	}
689		1237
690	method_poll (block);	1238	method_poll (EV_A_ block);
691		1239
692	/* update ev_now, do magic */	1240	/* update ev_rt_now, do magic */
693	time_update ();	1241	time_update (EV_A);
694		1242
695	/* queue pending timers and reschedule them */	1243	/* queue pending timers and reschedule them */
696	timers_reify (); /* relative timers called last */	1244	timers_reify (EV_A); /* relative timers called last */
		1245	#if EV_PERIODICS
697	periodics_reify (); /* absolute timers called first */	1246	periodics_reify (EV_A); /* absolute timers called first */
		1247	#endif
698		1248
699	/* queue idle watchers unless io or timers are pending */	1249	/* queue idle watchers unless io or timers are pending */
700	if (!pendingcnt)	1250	if (idlecnt && !any_pending (EV_A))
701	queue_events ((W *)idles, idlecnt, EV_IDLE);	1251	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
702		1252
703	/* queue check watchers, to be executed first */	1253	/* queue check watchers, to be executed first */
704	if (checkcnt)	1254	if (expect_false (checkcnt))
705	queue_events ((W *)checks, checkcnt, EV_CHECK);	1255	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
706		1256
707	call_pending ();	1257	call_pending (EV_A);
708	}
709	while (!ev_loop_done);
710		1258
		1259	if (expect_false (loop_done))
		1260	break;
		1261	}
		1262
711	if (ev_loop_done != 2)	1263	if (loop_done != 2)
712	ev_loop_done = 0;	1264	loop_done = 0;
		1265	}
		1266
		1267	void
		1268	ev_unloop (EV_P_ int how)
		1269	{
		1270	loop_done = how;
713	}	1271	}
714		1272
715	/*****************************************************************************/	1273	/*****************************************************************************/
716		1274
717	static void	1275	inline void
718	wlist_add (WL *head, WL elem)	1276	wlist_add (WL *head, WL elem)
719	{	1277	{
720	elem->next = *head;	1278	elem->next = *head;
721	*head = elem;	1279	*head = elem;
722	}	1280	}
723		1281
724	static void	1282	inline void
725	wlist_del (WL *head, WL elem)	1283	wlist_del (WL *head, WL elem)
726	{	1284	{
727	while (*head)	1285	while (*head)
728	{	1286	{
729	if (*head == elem)	1287	if (*head == elem)
…		…
734		1292
735	head = &(*head)->next;	1293	head = &(*head)->next;
736	}	1294	}
737	}	1295	}
738		1296
739	static void	1297	inline void
740	ev_clear_pending (W w)	1298	ev_clear_pending (EV_P_ W w)
741	{	1299	{
742	if (w->pending)	1300	if (w->pending)
743	{	1301	{
744	pendings [w->pending - 1].w = 0;	1302	pendings [ABSPRI (w)][w->pending - 1].w = 0;
745	w->pending = 0;	1303	w->pending = 0;
746	}	1304	}
747	}	1305	}
748		1306
749	static void	1307	inline void
750	ev_start (W w, int active)	1308	ev_start (EV_P_ W w, int active)
751	{	1309	{
		1310	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1311	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1312
752	w->active = active;	1313	w->active = active;
		1314	ev_ref (EV_A);
753	}	1315	}
754		1316
755	static void	1317	inline void
756	ev_stop (W w)	1318	ev_stop (EV_P_ W w)
757	{	1319	{
		1320	ev_unref (EV_A);
758	w->active = 0;	1321	w->active = 0;
759	}	1322	}
760		1323
761	/*****************************************************************************/	1324	/*****************************************************************************/
762		1325
763	void	1326	void
764	ev_io_start (struct ev_io *w)	1327	ev_io_start (EV_P_ struct ev_io *w)
765	{	1328	{
766	if (ev_is_active (w))
767	return;
768
769	int fd = w->fd;	1329	int fd = w->fd;
770		1330
		1331	if (expect_false (ev_is_active (w)))
		1332	return;
		1333
771	assert (("ev_io_start called with negative fd", fd >= 0));	1334	assert (("ev_io_start called with negative fd", fd >= 0));
772		1335
773	ev_start ((W)w, 1);	1336	ev_start (EV_A_ (W)w, 1);
774	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1337	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
775	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1338	wlist_add ((WL *)&anfds[fd].head, (WL)w);
776		1339
777	fd_change (fd);	1340	fd_change (EV_A_ fd);
778	}	1341	}
779		1342
780	void	1343	void
781	ev_io_stop (struct ev_io *w)	1344	ev_io_stop (EV_P_ struct ev_io *w)
782	{	1345	{
783	ev_clear_pending ((W)w);	1346	ev_clear_pending (EV_A_ (W)w);
784	if (!ev_is_active (w))	1347	if (expect_false (!ev_is_active (w)))
785	return;	1348	return;
		1349
		1350	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
786		1351
787	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1352	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
788	ev_stop ((W)w);	1353	ev_stop (EV_A_ (W)w);
789		1354
790	fd_change (w->fd);	1355	fd_change (EV_A_ w->fd);
791	}	1356	}
792		1357
793	void	1358	void
794	ev_timer_start (struct ev_timer *w)	1359	ev_timer_start (EV_P_ struct ev_timer *w)
795	{	1360	{
796	if (ev_is_active (w))	1361	if (expect_false (ev_is_active (w)))
797	return;	1362	return;
798		1363
799	w->at += now;	1364	((WT)w)->at += mn_now;
800		1365
801	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1366	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
802		1367
803	ev_start ((W)w, ++timercnt);	1368	ev_start (EV_A_ (W)w, ++timercnt);
804	array_needsize (timers, timermax, timercnt, );	1369	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
805	timers [timercnt - 1] = w;	1370	timers [timercnt - 1] = w;
806	upheap ((WT *)timers, timercnt - 1);	1371	upheap ((WT *)timers, timercnt - 1);
807	}
808		1372
		1373	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1374	}
		1375
809	void	1376	void
810	ev_timer_stop (struct ev_timer *w)	1377	ev_timer_stop (EV_P_ struct ev_timer *w)
811	{	1378	{
812	ev_clear_pending ((W)w);	1379	ev_clear_pending (EV_A_ (W)w);
813	if (!ev_is_active (w))	1380	if (expect_false (!ev_is_active (w)))
814	return;	1381	return;
815		1382
		1383	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1384
816	if (w->active < timercnt--)	1385	if (expect_true (((W)w)->active < timercnt--))
817	{	1386	{
818	timers [w->active - 1] = timers [timercnt];	1387	timers [((W)w)->active - 1] = timers [timercnt];
819	downheap ((WT *)timers, timercnt, w->active - 1);	1388	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
820	}	1389	}
821		1390
822	w->at = w->repeat;	1391	((WT)w)->at -= mn_now;
823		1392
824	ev_stop ((W)w);	1393	ev_stop (EV_A_ (W)w);
825	}	1394	}
826		1395
827	void	1396	void
828	ev_timer_again (struct ev_timer *w)	1397	ev_timer_again (EV_P_ struct ev_timer *w)
829	{	1398	{
830	if (ev_is_active (w))	1399	if (ev_is_active (w))
831	{	1400	{
832	if (w->repeat)	1401	if (w->repeat)
833	{	1402	{
834	w->at = now + w->repeat;	1403	((WT)w)->at = mn_now + w->repeat;
835	downheap ((WT *)timers, timercnt, w->active - 1);	1404	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
836	}	1405	}
837	else	1406	else
838	ev_timer_stop (w);	1407	ev_timer_stop (EV_A_ w);
839	}	1408	}
840	else if (w->repeat)	1409	else if (w->repeat)
		1410	{
		1411	w->at = w->repeat;
841	ev_timer_start (w);	1412	ev_timer_start (EV_A_ w);
		1413	}
842	}	1414	}
843		1415
		1416	#if EV_PERIODICS
844	void	1417	void
845	ev_periodic_start (struct ev_periodic *w)	1418	ev_periodic_start (EV_P_ struct ev_periodic *w)
846	{	1419	{
847	if (ev_is_active (w))	1420	if (expect_false (ev_is_active (w)))
848	return;	1421	return;
849		1422
		1423	if (w->reschedule_cb)
		1424	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1425	else if (w->interval)
		1426	{
850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1427	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
851
852	/* this formula differs from the one in periodic_reify because we do not always round up */	1428	/* this formula differs from the one in periodic_reify because we do not always round up */
853	if (w->interval)
854	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1429	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1430	}
855		1431
856	ev_start ((W)w, ++periodiccnt);	1432	ev_start (EV_A_ (W)w, ++periodiccnt);
857	array_needsize (periodics, periodicmax, periodiccnt, );	1433	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
858	periodics [periodiccnt - 1] = w;	1434	periodics [periodiccnt - 1] = w;
859	upheap ((WT *)periodics, periodiccnt - 1);	1435	upheap ((WT *)periodics, periodiccnt - 1);
860	}
861		1436
		1437	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1438	}
		1439
862	void	1440	void
863	ev_periodic_stop (struct ev_periodic *w)	1441	ev_periodic_stop (EV_P_ struct ev_periodic *w)
864	{	1442	{
865	ev_clear_pending ((W)w);	1443	ev_clear_pending (EV_A_ (W)w);
866	if (!ev_is_active (w))	1444	if (expect_false (!ev_is_active (w)))
867	return;	1445	return;
868		1446
		1447	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1448
869	if (w->active < periodiccnt--)	1449	if (expect_true (((W)w)->active < periodiccnt--))
870	{	1450	{
871	periodics [w->active - 1] = periodics [periodiccnt];	1451	periodics [((W)w)->active - 1] = periodics [periodiccnt];
872	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1452	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
873	}	1453	}
874		1454
875	ev_stop ((W)w);	1455	ev_stop (EV_A_ (W)w);
876	}	1456	}
877		1457
878	void	1458	void
		1459	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1460	{
		1461	/* TODO: use adjustheap and recalculation */
		1462	ev_periodic_stop (EV_A_ w);
		1463	ev_periodic_start (EV_A_ w);
		1464	}
		1465	#endif
		1466
		1467	void
		1468	ev_idle_start (EV_P_ struct ev_idle *w)
		1469	{
		1470	if (expect_false (ev_is_active (w)))
		1471	return;
		1472
		1473	ev_start (EV_A_ (W)w, ++idlecnt);
		1474	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1475	idles [idlecnt - 1] = w;
		1476	}
		1477
		1478	void
		1479	ev_idle_stop (EV_P_ struct ev_idle *w)
		1480	{
		1481	ev_clear_pending (EV_A_ (W)w);
		1482	if (expect_false (!ev_is_active (w)))
		1483	return;
		1484
		1485	idles [((W)w)->active - 1] = idles [--idlecnt];
		1486	ev_stop (EV_A_ (W)w);
		1487	}
		1488
		1489	void
		1490	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1491	{
		1492	if (expect_false (ev_is_active (w)))
		1493	return;
		1494
		1495	ev_start (EV_A_ (W)w, ++preparecnt);
		1496	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1497	prepares [preparecnt - 1] = w;
		1498	}
		1499
		1500	void
		1501	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1502	{
		1503	ev_clear_pending (EV_A_ (W)w);
		1504	if (expect_false (!ev_is_active (w)))
		1505	return;
		1506
		1507	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1508	ev_stop (EV_A_ (W)w);
		1509	}
		1510
		1511	void
		1512	ev_check_start (EV_P_ struct ev_check *w)
		1513	{
		1514	if (expect_false (ev_is_active (w)))
		1515	return;
		1516
		1517	ev_start (EV_A_ (W)w, ++checkcnt);
		1518	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1519	checks [checkcnt - 1] = w;
		1520	}
		1521
		1522	void
		1523	ev_check_stop (EV_P_ struct ev_check *w)
		1524	{
		1525	ev_clear_pending (EV_A_ (W)w);
		1526	if (expect_false (!ev_is_active (w)))
		1527	return;
		1528
		1529	checks [((W)w)->active - 1] = checks [--checkcnt];
		1530	ev_stop (EV_A_ (W)w);
		1531	}
		1532
		1533	#ifndef SA_RESTART
		1534	# define SA_RESTART 0
		1535	#endif
		1536
		1537	void
879	ev_signal_start (struct ev_signal *w)	1538	ev_signal_start (EV_P_ struct ev_signal *w)
880	{	1539	{
		1540	#if EV_MULTIPLICITY
		1541	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1542	#endif
881	if (ev_is_active (w))	1543	if (expect_false (ev_is_active (w)))
882	return;	1544	return;
883		1545
884	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1546	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
885		1547
886	ev_start ((W)w, 1);	1548	ev_start (EV_A_ (W)w, 1);
887	array_needsize (signals, signalmax, w->signum, signals_init);	1549	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
888	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
889		1551
890	if (!w->next)	1552	if (!((WL)w)->next)
891	{	1553	{
		1554	#if _WIN32
		1555	signal (w->signum, sighandler);
		1556	#else
892	struct sigaction sa;	1557	struct sigaction sa;
893	sa.sa_handler = sighandler;	1558	sa.sa_handler = sighandler;
894	sigfillset (&sa.sa_mask);	1559	sigfillset (&sa.sa_mask);
895	sa.sa_flags = 0;	1560	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
896	sigaction (w->signum, &sa, 0);	1561	sigaction (w->signum, &sa, 0);
		1562	#endif
897	}	1563	}
898	}	1564	}
899		1565
900	void	1566	void
901	ev_signal_stop (struct ev_signal *w)	1567	ev_signal_stop (EV_P_ struct ev_signal *w)
902	{	1568	{
903	ev_clear_pending ((W)w);	1569	ev_clear_pending (EV_A_ (W)w);
904	if (!ev_is_active (w))	1570	if (expect_false (!ev_is_active (w)))
905	return;	1571	return;
906		1572
907	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1573	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
908	ev_stop ((W)w);	1574	ev_stop (EV_A_ (W)w);
909		1575
910	if (!signals [w->signum - 1].head)	1576	if (!signals [w->signum - 1].head)
911	signal (w->signum, SIG_DFL);	1577	signal (w->signum, SIG_DFL);
912	}	1578	}
913		1579
914	void	1580	void
915	ev_idle_start (struct ev_idle *w)
916	{
917	if (ev_is_active (w))
918	return;
919
920	ev_start ((W)w, ++idlecnt);
921	array_needsize (idles, idlemax, idlecnt, );
922	idles [idlecnt - 1] = w;
923	}
924
925	void
926	ev_idle_stop (struct ev_idle *w)
927	{
928	ev_clear_pending ((W)w);
929	if (ev_is_active (w))
930	return;
931
932	idles [w->active - 1] = idles [--idlecnt];
933	ev_stop ((W)w);
934	}
935
936	void
937	ev_prepare_start (struct ev_prepare *w)
938	{
939	if (ev_is_active (w))
940	return;
941
942	ev_start ((W)w, ++preparecnt);
943	array_needsize (prepares, preparemax, preparecnt, );
944	prepares [preparecnt - 1] = w;
945	}
946
947	void
948	ev_prepare_stop (struct ev_prepare *w)
949	{
950	ev_clear_pending ((W)w);
951	if (ev_is_active (w))
952	return;
953
954	prepares [w->active - 1] = prepares [--preparecnt];
955	ev_stop ((W)w);
956	}
957
958	void
959	ev_check_start (struct ev_check *w)
960	{
961	if (ev_is_active (w))
962	return;
963
964	ev_start ((W)w, ++checkcnt);
965	array_needsize (checks, checkmax, checkcnt, );
966	checks [checkcnt - 1] = w;
967	}
968
969	void
970	ev_check_stop (struct ev_check *w)
971	{
972	ev_clear_pending ((W)w);
973	if (ev_is_active (w))
974	return;
975
976	checks [w->active - 1] = checks [--checkcnt];
977	ev_stop ((W)w);
978	}
979
980	void
981	ev_child_start (struct ev_child *w)	1581	ev_child_start (EV_P_ struct ev_child *w)
982	{	1582	{
		1583	#if EV_MULTIPLICITY
		1584	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1585	#endif
983	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
984	return;	1587	return;
985		1588
986	ev_start ((W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
987	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1590	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
988	}	1591	}
989		1592
990	void	1593	void
991	ev_child_stop (struct ev_child *w)	1594	ev_child_stop (EV_P_ struct ev_child *w)
992	{	1595	{
993	ev_clear_pending ((W)w);	1596	ev_clear_pending (EV_A_ (W)w);
994	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
995	return;	1598	return;
996		1599
997	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1600	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
998	ev_stop ((W)w);	1601	ev_stop (EV_A_ (W)w);
999	}	1602	}
1000		1603
1001	/*****************************************************************************/	1604	/*****************************************************************************/
1002		1605
1003	struct ev_once	1606	struct ev_once
…		…
1007	void (cb)(int revents, void arg);	1610	void (cb)(int revents, void arg);
1008	void *arg;	1611	void *arg;
1009	};	1612	};
1010		1613
1011	static void	1614	static void
1012	once_cb (struct ev_once *once, int revents)	1615	once_cb (EV_P_ struct ev_once *once, int revents)
1013	{	1616	{
1014	void (cb)(int revents, void arg) = once->cb;	1617	void (cb)(int revents, void arg) = once->cb;
1015	void *arg = once->arg;	1618	void *arg = once->arg;
1016		1619
1017	ev_io_stop (&once->io);	1620	ev_io_stop (EV_A_ &once->io);
1018	ev_timer_stop (&once->to);	1621	ev_timer_stop (EV_A_ &once->to);
1019	free (once);	1622	ev_free (once);
1020		1623
1021	cb (revents, arg);	1624	cb (revents, arg);
1022	}	1625	}
1023		1626
1024	static void	1627	static void
1025	once_cb_io (struct ev_io *w, int revents)	1628	once_cb_io (EV_P_ struct ev_io *w, int revents)
1026	{	1629	{
1027	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1630	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1028	}	1631	}
1029		1632
1030	static void	1633	static void
1031	once_cb_to (struct ev_timer *w, int revents)	1634	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1032	{	1635	{
1033	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1636	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1034	}	1637	}
1035		1638
1036	void	1639	void
1037	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1640	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1038	{	1641	{
1039	struct ev_once *once = malloc (sizeof (struct ev_once));	1642	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1040		1643
1041	if (!once)	1644	if (expect_false (!once))
		1645	{
1042	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1646	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1043	else	1647	return;
1044	{	1648	}
		1649
1045	once->cb = cb;	1650	once->cb = cb;
1046	once->arg = arg;	1651	once->arg = arg;
1047		1652
1048	ev_watcher_init (&once->io, once_cb_io);	1653	ev_init (&once->io, once_cb_io);
1049	if (fd >= 0)	1654	if (fd >= 0)
1050	{	1655	{
1051	ev_io_set (&once->io, fd, events);	1656	ev_io_set (&once->io, fd, events);
1052	ev_io_start (&once->io);	1657	ev_io_start (EV_A_ &once->io);
1053	}	1658	}
1054		1659
1055	ev_watcher_init (&once->to, once_cb_to);	1660	ev_init (&once->to, once_cb_to);
1056	if (timeout >= 0.)	1661	if (timeout >= 0.)
1057	{	1662	{
1058	ev_timer_set (&once->to, timeout, 0.);	1663	ev_timer_set (&once->to, timeout, 0.);
1059	ev_timer_start (&once->to);	1664	ev_timer_start (EV_A_ &once->to);
1060	}
1061	}
1062	}
1063
1064	/*****************************************************************************/
1065
1066	#if 0
1067
1068	struct ev_io wio;
1069
1070	static void
1071	sin_cb (struct ev_io *w, int revents)
1072	{
1073	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1074	}
1075
1076	static void
1077	ocb (struct ev_timer *w, int revents)
1078	{
1079	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1080	ev_timer_stop (w);
1081	ev_timer_start (w);
1082	}
1083
1084	static void
1085	scb (struct ev_signal *w, int revents)
1086	{
1087	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1088	ev_io_stop (&wio);
1089	ev_io_start (&wio);
1090	}
1091
1092	static void
1093	gcb (struct ev_signal *w, int revents)
1094	{
1095	fprintf (stderr, "generic %x\n", revents);
1096
1097	}
1098
1099	int main (void)
1100	{
1101	ev_init (0);
1102
1103	ev_io_init (&wio, sin_cb, 0, EV_READ);
1104	ev_io_start (&wio);
1105
1106	struct ev_timer t[10000];
1107
1108	#if 0
1109	int i;
1110	for (i = 0; i < 10000; ++i)
1111	{	1665	}
1112	struct ev_timer *w = t + i;
1113	ev_watcher_init (w, ocb, i);
1114	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1115	ev_timer_start (w);
1116	if (drand48 () < 0.5)
1117	ev_timer_stop (w);
1118	}
1119	#endif
1120
1121	struct ev_timer t1;
1122	ev_timer_init (&t1, ocb, 5, 10);
1123	ev_timer_start (&t1);
1124
1125	struct ev_signal sig;
1126	ev_signal_init (&sig, scb, SIGQUIT);
1127	ev_signal_start (&sig);
1128
1129	struct ev_check cw;
1130	ev_check_init (&cw, gcb);
1131	ev_check_start (&cw);
1132
1133	struct ev_idle iw;
1134	ev_idle_init (&iw, gcb);
1135	ev_idle_start (&iw);
1136
1137	ev_loop (0);
1138
1139	return 0;
1140	}	1666	}
1141		1667
		1668	#ifdef __cplusplus
		1669	}
1142	#endif	1670	#endif
1143		1671
1144
1145
1146

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Comparing libev/ev.c (file contents): Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs. Revision 1.125 by root, Sat Nov 17 02:28:43 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.35 by root, Thu Nov 1 11:55:54 2007 UTC vs.
Revision 1.125 by root, Sat Nov 17 02:28:43 2007 UTC