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

Comparing libev/ev.c (file contents):
Revision 1.34 by root, Thu Nov 1 11:43:11 2007 UTC vs.
Revision 1.127 by root, Sun Nov 18 02:17:57 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	# else
		47	# ifndef EV_USE_MONOTONIC
		48	# define EV_USE_MONOTONIC 0
		49	# endif
		50	# ifndef EV_USE_REALTIME
		51	# define EV_USE_REALTIME 0
		52	# endif
		53	# endif
		54
		55	# ifndef EV_USE_SELECT
		56	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		57	# define EV_USE_SELECT 1
		58	# else
		59	# define EV_USE_SELECT 0
		60	# endif
		61	# endif
		62
		63	# ifndef EV_USE_POLL
		64	# if HAVE_POLL && HAVE_POLL_H
		65	# define EV_USE_POLL 1
		66	# else
		67	# define EV_USE_POLL 0
		68	# endif
		69	# endif
		70
		71	# ifndef EV_USE_EPOLL
		72	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		73	# define EV_USE_EPOLL 1
		74	# else
		75	# define EV_USE_EPOLL 0
		76	# endif
		77	# endif
		78
		79	# ifndef EV_USE_KQUEUE
		80	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		81	# define EV_USE_KQUEUE 1
		82	# else
		83	# define EV_USE_KQUEUE 0
		84	# endif
		85	# endif
		86
		87	# ifndef EV_USE_PORT
		88	# if HAVE_PORT_H && HAVE_PORT_CREATE
		89	# define EV_USE_PORT 1
		90	# else
		91	# define EV_USE_PORT 0
		92	# endif
		93	# endif
		94
31	#endif	95	#endif
32		96
33	#include <math.h>	97	#include <math.h>
34	#include <stdlib.h>	98	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	99	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	100	#include <stddef.h>
39		101
40	#include <stdio.h>	102	#include <stdio.h>
41		103
42	#include <assert.h>	104	#include <assert.h>
43	#include <errno.h>	105	#include <errno.h>
44	#include <sys/types.h>	106	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	107	#include <time.h>
48		108
		109	#include <signal.h>
		110
		111	#ifndef _WIN32
		112	# include <unistd.h>
		113	# include <sys/time.h>
		114	# include <sys/wait.h>
		115	#else
		116	# define WIN32_LEAN_AND_MEAN
		117	# include <windows.h>
		118	# ifndef EV_SELECT_IS_WINSOCKET
		119	# define EV_SELECT_IS_WINSOCKET 1
		120	# endif
		121	#endif
		122
		123	/**/
		124
49	#ifndef EV_USE_MONOTONIC	125	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	126	# define EV_USE_MONOTONIC 0
52	# endif	127	#endif
		128
		129	#ifndef EV_USE_REALTIME
		130	# define EV_USE_REALTIME 0
53	#endif	131	#endif
54		132
55	#ifndef EV_USE_SELECT	133	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	134	# define EV_USE_SELECT 1
57	#endif	135	#endif
58		136
		137	#ifndef EV_USE_POLL
		138	# ifdef _WIN32
		139	# define EV_USE_POLL 0
		140	# else
		141	# define EV_USE_POLL 1
		142	# endif
		143	#endif
		144
59	#ifndef EV_USE_EPOLL	145	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	146	# define EV_USE_EPOLL 0
61	#endif	147	#endif
62		148
		149	#ifndef EV_USE_KQUEUE
		150	# define EV_USE_KQUEUE 0
		151	#endif
		152
		153	#ifndef EV_USE_PORT
		154	# define EV_USE_PORT 0
		155	#endif
		156
		157	/**/
		158
		159	/* darwin simply cannot be helped */
		160	#ifdef __APPLE__
		161	# undef EV_USE_POLL
		162	# undef EV_USE_KQUEUE
		163	#endif
		164
		165	#ifndef CLOCK_MONOTONIC
		166	# undef EV_USE_MONOTONIC
		167	# define EV_USE_MONOTONIC 0
		168	#endif
		169
63	#ifndef CLOCK_REALTIME	170	#ifndef CLOCK_REALTIME
		171	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 0	172	# define EV_USE_REALTIME 0
65	#endif	173	#endif
66	#ifndef EV_USE_REALTIME	174
67	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	175	#if EV_SELECT_IS_WINSOCKET
		176	# include <winsock.h>
68	#endif	177	#endif
		178
		179	/**/
69		180
70	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	181	#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) */	182	#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 */	183	#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 */	184	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
74		185
		186	#ifdef EV_H
		187	# include EV_H
		188	#else
75	#include "ev.h"	189	# include "ev.h"
		190	#endif
		191
		192	#if __GNUC__ >= 3
		193	# define expect(expr,value) __builtin_expect ((expr),(value))
		194	# define inline static inline
		195	#else
		196	# define expect(expr,value) (expr)
		197	# define inline static
		198	#endif
		199
		200	#define expect_false(expr) expect ((expr) != 0, 0)
		201	#define expect_true(expr) expect ((expr) != 0, 1)
		202
		203	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		204	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
		205
		206	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		207	#define EMPTY2(a,b) /* used to suppress some warnings */
76		208
77	typedef struct ev_watcher *W;	209	typedef struct ev_watcher *W;
78	typedef struct ev_watcher_list *WL;	210	typedef struct ev_watcher_list *WL;
79	typedef struct ev_watcher_time *WT;	211	typedef struct ev_watcher_time *WT;
80		212
81	static ev_tstamp now, diff; /* monotonic clock */	213	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		214
		215	#ifdef _WIN32
		216	# include "ev_win32.c"
		217	#endif
		218
		219	/*****************************************************************************/
		220
		221	static void (syserr_cb)(const char msg);
		222
		223	void ev_set_syserr_cb (void (cb)(const char msg))
		224	{
		225	syserr_cb = cb;
		226	}
		227
		228	static void
		229	syserr (const char *msg)
		230	{
		231	if (!msg)
		232	msg = "(libev) system error";
		233
		234	if (syserr_cb)
		235	syserr_cb (msg);
		236	else
		237	{
		238	perror (msg);
		239	abort ();
		240	}
		241	}
		242
		243	static void (alloc)(void *ptr, long size);
		244
		245	void ev_set_allocator (void (cb)(void *ptr, long size))
		246	{
		247	alloc = cb;
		248	}
		249
		250	static void *
		251	ev_realloc (void *ptr, long size)
		252	{
		253	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		254
		255	if (!ptr && size)
		256	{
		257	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		258	abort ();
		259	}
		260
		261	return ptr;
		262	}
		263
		264	#define ev_malloc(size) ev_realloc (0, (size))
		265	#define ev_free(ptr) ev_realloc ((ptr), 0)
		266
		267	/*****************************************************************************/
		268
		269	typedef struct
		270	{
		271	WL head;
		272	unsigned char events;
		273	unsigned char reify;
		274	#if EV_SELECT_IS_WINSOCKET
		275	SOCKET handle;
		276	#endif
		277	} ANFD;
		278
		279	typedef struct
		280	{
		281	W w;
		282	int events;
		283	} ANPENDING;
		284
		285	#if EV_MULTIPLICITY
		286
		287	struct ev_loop
		288	{
		289	ev_tstamp ev_rt_now;
		290	#define ev_rt_now ((loop)->ev_rt_now)
		291	#define VAR(name,decl) decl;
		292	#include "ev_vars.h"
		293	#undef VAR
		294	};
		295	#include "ev_wrap.h"
		296
		297	static struct ev_loop default_loop_struct;
		298	struct ev_loop *ev_default_loop_ptr;
		299
		300	#else
		301
82	ev_tstamp ev_now;	302	ev_tstamp ev_rt_now;
83	int ev_method;	303	#define VAR(name,decl) static decl;
		304	#include "ev_vars.h"
		305	#undef VAR
84		306
85	static int have_monotonic; /* runtime */	307	static int ev_default_loop_ptr;
86		308
87	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	309	#endif
88	static void (*method_modify)(int fd, int oev, int nev);
89	static void (*method_poll)(ev_tstamp timeout);
90		310
91	/*****************************************************************************/	311	/*****************************************************************************/
92		312
93	ev_tstamp	313	ev_tstamp
94	ev_time (void)	314	ev_time (void)
…		…
102	gettimeofday (&tv, 0);	322	gettimeofday (&tv, 0);
103	return tv.tv_sec + tv.tv_usec * 1e-6;	323	return tv.tv_sec + tv.tv_usec * 1e-6;
104	#endif	324	#endif
105	}	325	}
106		326
107	static ev_tstamp	327	inline ev_tstamp
108	get_clock (void)	328	get_clock (void)
109	{	329	{
110	#if EV_USE_MONOTONIC	330	#if EV_USE_MONOTONIC
111	if (have_monotonic)	331	if (expect_true (have_monotonic))
112	{	332	{
113	struct timespec ts;	333	struct timespec ts;
114	clock_gettime (CLOCK_MONOTONIC, &ts);	334	clock_gettime (CLOCK_MONOTONIC, &ts);
115	return ts.tv_sec + ts.tv_nsec * 1e-9;	335	return ts.tv_sec + ts.tv_nsec * 1e-9;
116	}	336	}
117	#endif	337	#endif
118		338
119	return ev_time ();	339	return ev_time ();
120	}	340	}
121		341
		342	#if EV_MULTIPLICITY
		343	ev_tstamp
		344	ev_now (EV_P)
		345	{
		346	return ev_rt_now;
		347	}
		348	#endif
		349
122	#define array_roundsize(base,n) ((n) \| 4 & ~3)	350	#define array_roundsize(type,n) (((n) \| 4) & ~3)
123		351
124	#define array_needsize(base,cur,cnt,init) \	352	#define array_needsize(type,base,cur,cnt,init) \
125	if ((cnt) > cur) \	353	if (expect_false ((cnt) > cur)) \
126	{ \	354	{ \
127	int newcnt = cur; \	355	int newcnt = cur; \
128	do \	356	do \
129	{ \	357	{ \
130	newcnt = array_roundsize (base, newcnt << 1); \	358	newcnt = array_roundsize (type, newcnt << 1); \
131	} \	359	} \
132	while ((cnt) > newcnt); \	360	while ((cnt) > newcnt); \
133	\	361	\
134	base = realloc (base, sizeof (base) (newcnt)); \	362	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
135	init (base + cur, newcnt - cur); \	363	init (base + cur, newcnt - cur); \
136	cur = newcnt; \	364	cur = newcnt; \
137	}	365	}
		366
		367	#define array_slim(type,stem) \
		368	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		369	{ \
		370	stem ## max = array_roundsize (stem ## cnt >> 1); \
		371	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		372	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		373	}
		374
		375	#define array_free(stem, idx) \
		376	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
138		377
139	/*****************************************************************************/	378	/*****************************************************************************/
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		379
151	static void	380	static void
152	anfds_init (ANFD *base, int count)	381	anfds_init (ANFD *base, int count)
153	{	382	{
154	while (count--)	383	while (count--)
…		…
159		388
160	++base;	389	++base;
161	}	390	}
162	}	391	}
163		392
164	typedef struct	393	void
		394	ev_feed_event (EV_P_ void *w, int revents)
165	{	395	{
166	W w;	396	W w_ = (W)w;
167	int events;
168	} ANPENDING;
169		397
170	static ANPENDING *pendings;	398	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	{	399	{
178	pendings [w->pending - 1].events \|= events;	400	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
179	return;	401	return;
180	}	402	}
181		403
182	w->pending = ++pendingcnt;	404	w_->pending = ++pendingcnt [ABSPRI (w_)];
183	array_needsize (pendings, pendingmax, pendingcnt, );	405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
184	pendings [pendingcnt - 1].w = w;	406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
185	pendings [pendingcnt - 1].events = events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
186	}	408	}
187		409
188	static void	410	static void
189	queue_events (W *events, int eventcnt, int type)	411	queue_events (EV_P_ W *events, int eventcnt, int type)
190	{	412	{
191	int i;	413	int i;
192		414
193	for (i = 0; i < eventcnt; ++i)	415	for (i = 0; i < eventcnt; ++i)
194	event (events [i], type);	416	ev_feed_event (EV_A_ events [i], type);
195	}	417	}
196		418
197	static void	419	inline void
198	fd_event (int fd, int events)	420	fd_event (EV_P_ int fd, int revents)
199	{	421	{
200	ANFD *anfd = anfds + fd;	422	ANFD *anfd = anfds + fd;
201	struct ev_io *w;	423	struct ev_io *w;
202		424
203	for (w = anfd->head; w; w = w->next)	425	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
204	{	426	{
205	int ev = w->events & events;	427	int ev = w->events & revents;
206		428
207	if (ev)	429	if (ev)
208	event ((W)w, ev);	430	ev_feed_event (EV_A_ (W)w, ev);
209	}	431	}
		432	}
		433
		434	void
		435	ev_feed_fd_event (EV_P_ int fd, int revents)
		436	{
		437	fd_event (EV_A_ fd, revents);
210	}	438	}
211		439
212	/*****************************************************************************/	440	/*****************************************************************************/
213		441
214	static int *fdchanges;	442	inline void
215	static int fdchangemax, fdchangecnt;	443	fd_reify (EV_P)
216
217	static void
218	fd_reify (void)
219	{	444	{
220	int i;	445	int i;
221		446
222	for (i = 0; i < fdchangecnt; ++i)	447	for (i = 0; i < fdchangecnt; ++i)
223	{	448	{
…		…
225	ANFD *anfd = anfds + fd;	450	ANFD *anfd = anfds + fd;
226	struct ev_io *w;	451	struct ev_io *w;
227		452
228	int events = 0;	453	int events = 0;
229		454
230	for (w = anfd->head; w; w = w->next)	455	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
231	events \|= w->events;	456	events \|= w->events;
232		457
		458	#if EV_SELECT_IS_WINSOCKET
		459	if (events)
		460	{
		461	unsigned long argp;
		462	anfd->handle = _get_osfhandle (fd);
		463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		464	}
		465	#endif
		466
233	anfd->reify = 0;	467	anfd->reify = 0;
234		468
235	if (anfd->events != events)
236	{
237	method_modify (fd, anfd->events, events);	469	method_modify (EV_A_ fd, anfd->events, events);
238	anfd->events = events;	470	anfd->events = events;
239	}
240	}	471	}
241		472
242	fdchangecnt = 0;	473	fdchangecnt = 0;
243	}	474	}
244		475
245	static void	476	static void
246	fd_change (int fd)	477	fd_change (EV_P_ int fd)
247	{	478	{
248	if (anfds [fd].reify \|\| fdchangecnt < 0)	479	if (expect_false (anfds [fd].reify))
249	return;	480	return;
250		481
251	anfds [fd].reify = 1;	482	anfds [fd].reify = 1;
252		483
253	++fdchangecnt;	484	++fdchangecnt;
254	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
255	fdchanges [fdchangecnt - 1] = fd;	486	fdchanges [fdchangecnt - 1] = fd;
256	}	487	}
257		488
		489	static void
		490	fd_kill (EV_P_ int fd)
		491	{
		492	struct ev_io *w;
		493
		494	while ((w = (struct ev_io *)anfds [fd].head))
		495	{
		496	ev_io_stop (EV_A_ w);
		497	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
		498	}
		499	}
		500
		501	inline int
		502	fd_valid (int fd)
		503	{
		504	#ifdef _WIN32
		505	return _get_osfhandle (fd) != -1;
		506	#else
		507	return fcntl (fd, F_GETFD) != -1;
		508	#endif
		509	}
		510
258	/* called on EBADF to verify fds */	511	/* called on EBADF to verify fds */
259	static void	512	static void
260	fd_recheck (void)	513	fd_ebadf (EV_P)
261	{	514	{
262	int fd;	515	int fd;
263		516
264	for (fd = 0; fd < anfdmax; ++fd)	517	for (fd = 0; fd < anfdmax; ++fd)
265	if (anfds [fd].events)	518	if (anfds [fd].events)
266	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	519	if (!fd_valid (fd) == -1 && errno == EBADF)
267	while (anfds [fd].head)	520	fd_kill (EV_A_ fd);
		521	}
		522
		523	/* called on ENOMEM in select/poll to kill some fds and retry */
		524	static void
		525	fd_enomem (EV_P)
		526	{
		527	int fd;
		528
		529	for (fd = anfdmax; fd--; )
		530	if (anfds [fd].events)
268	{	531	{
269	ev_io_stop (anfds [fd].head);	532	fd_kill (EV_A_ fd);
270	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE);	533	return;
271	}	534	}
		535	}
		536
		537	/* usually called after fork if method needs to re-arm all fds from scratch */
		538	static void
		539	fd_rearm_all (EV_P)
		540	{
		541	int fd;
		542
		543	/* this should be highly optimised to not do anything but set a flag */
		544	for (fd = 0; fd < anfdmax; ++fd)
		545	if (anfds [fd].events)
		546	{
		547	anfds [fd].events = 0;
		548	fd_change (EV_A_ fd);
		549	}
272	}	550	}
273		551
274	/*****************************************************************************/	552	/*****************************************************************************/
275		553
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	554	static void
283	upheap (WT *timers, int k)	555	upheap (WT *heap, int k)
284	{	556	{
285	WT w = timers [k];	557	WT w = heap [k];
286		558
287	while (k && timers [k >> 1]->at > w->at)	559	while (k && heap [k >> 1]->at > w->at)
288	{	560	{
289	timers [k] = timers [k >> 1];	561	heap [k] = heap [k >> 1];
290	timers [k]->active = k + 1;	562	((W)heap [k])->active = k + 1;
291	k >>= 1;	563	k >>= 1;
292	}	564	}
293		565
294	timers [k] = w;	566	heap [k] = w;
295	timers [k]->active = k + 1;	567	((W)heap [k])->active = k + 1;
296		568
297	}	569	}
298		570
299	static void	571	static void
300	downheap (WT *timers, int N, int k)	572	downheap (WT *heap, int N, int k)
301	{	573	{
302	WT w = timers [k];	574	WT w = heap [k];
303		575
304	while (k < (N >> 1))	576	while (k < (N >> 1))
305	{	577	{
306	int j = k << 1;	578	int j = k << 1;
307		579
308	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
309	++j;	581	++j;
310		582
311	if (w->at <= timers [j]->at)	583	if (w->at <= heap [j]->at)
312	break;	584	break;
313		585
314	timers [k] = timers [j];	586	heap [k] = heap [j];
315	timers [k]->active = k + 1;	587	((W)heap [k])->active = k + 1;
316	k = j;	588	k = j;
317	}	589	}
318		590
319	timers [k] = w;	591	heap [k] = w;
320	timers [k]->active = k + 1;	592	((W)heap [k])->active = k + 1;
		593	}
		594
		595	inline void
		596	adjustheap (WT *heap, int N, int k)
		597	{
		598	upheap (heap, k);
		599	downheap (heap, N, k);
321	}	600	}
322		601
323	/*****************************************************************************/	602	/*****************************************************************************/
324		603
325	typedef struct	604	typedef struct
326	{	605	{
327	struct ev_signal *head;	606	WL head;
328	sig_atomic_t volatile gotsig;	607	sig_atomic_t volatile gotsig;
329	} ANSIG;	608	} ANSIG;
330		609
331	static ANSIG *signals;	610	static ANSIG *signals;
332	static int signalmax;	611	static int signalmax;
…		…
348	}	627	}
349		628
350	static void	629	static void
351	sighandler (int signum)	630	sighandler (int signum)
352	{	631	{
		632	#if _WIN32
		633	signal (signum, sighandler);
		634	#endif
		635
353	signals [signum - 1].gotsig = 1;	636	signals [signum - 1].gotsig = 1;
354		637
355	if (!gotsig)	638	if (!gotsig)
356	{	639	{
		640	int old_errno = errno;
357	gotsig = 1;	641	gotsig = 1;
358	write (sigpipe [1], &signum, 1);	642	write (sigpipe [1], &signum, 1);
		643	errno = old_errno;
359	}	644	}
360	}	645	}
361		646
		647	void
		648	ev_feed_signal_event (EV_P_ int signum)
		649	{
		650	WL w;
		651
		652	#if EV_MULTIPLICITY
		653	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		654	#endif
		655
		656	--signum;
		657
		658	if (signum < 0 \|\| signum >= signalmax)
		659	return;
		660
		661	signals [signum].gotsig = 0;
		662
		663	for (w = signals [signum].head; w; w = w->next)
		664	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		665	}
		666
362	static void	667	static void
363	sigcb (struct ev_io *iow, int revents)	668	sigcb (EV_P_ struct ev_io *iow, int revents)
364	{	669	{
365	struct ev_signal *w;
366	int sig;	670	int signum;
367		671
368	read (sigpipe [0], &revents, 1);	672	read (sigpipe [0], &revents, 1);
369	gotsig = 0;	673	gotsig = 0;
370		674
371	for (sig = signalmax; sig--; )	675	for (signum = signalmax; signum--; )
372	if (signals [sig].gotsig)	676	if (signals [signum].gotsig)
373	{	677	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	}	678	}
380		679
381	static void	680	static void
382	siginit (void)	681	fd_intern (int fd)
383	{	682	{
		683	#ifdef _WIN32
		684	int arg = 1;
		685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		686	#else
384	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	687	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);	688	fcntl (fd, F_SETFL, O_NONBLOCK);
389	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	689	#endif
		690	}
		691
		692	static void
		693	siginit (EV_P)
		694	{
		695	fd_intern (sigpipe [0]);
		696	fd_intern (sigpipe [1]);
390		697
391	ev_io_set (&sigev, sigpipe [0], EV_READ);	698	ev_io_set (&sigev, sigpipe [0], EV_READ);
392	ev_io_start (&sigev);	699	ev_io_start (EV_A_ &sigev);
		700	ev_unref (EV_A); /* child watcher should not keep loop alive */
393	}	701	}
394		702
395	/*****************************************************************************/	703	/*****************************************************************************/
396		704
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];	705	static struct ev_child *childs [PID_HASHSIZE];
		706
		707	#ifndef _WIN32
		708
409	static struct ev_signal childev;	709	static struct ev_signal childev;
410		710
411	#ifndef WCONTINUED	711	#ifndef WCONTINUED
412	# define WCONTINUED 0	712	# define WCONTINUED 0
413	#endif	713	#endif
414		714
415	static void	715	static void
416	childcb (struct ev_signal *sw, int revents)	716	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
417	{	717	{
418	struct ev_child *w;	718	struct ev_child *w;
		719
		720	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		721	if (w->pid == pid \|\| !w->pid)
		722	{
		723	ev_priority (w) = ev_priority (sw); /* need to do it now */
		724	w->rpid = pid;
		725	w->rstatus = status;
		726	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		727	}
		728	}
		729
		730	static void
		731	childcb (EV_P_ struct ev_signal *sw, int revents)
		732	{
419	int pid, status;	733	int pid, status;
420		734
421	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	735	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
422	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	736	{
423	if (w->pid == pid \|\| w->pid == -1)	737	/* make sure we are called again until all childs have been reaped */
424	{	738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
425	w->status = status;	739
426	event ((W)w, EV_CHILD);	740	child_reap (EV_A_ sw, pid, pid, status);
427	}	741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		742	}
428	}	743	}
		744
		745	#endif
429		746
430	/*****************************************************************************/	747	/*****************************************************************************/
431		748
		749	#if EV_USE_PORT
		750	# include "ev_port.c"
		751	#endif
		752	#if EV_USE_KQUEUE
		753	# include "ev_kqueue.c"
		754	#endif
432	#if EV_USE_EPOLL	755	#if EV_USE_EPOLL
433	# include "ev_epoll.c"	756	# include "ev_epoll.c"
434	#endif	757	#endif
		758	#if EV_USE_POLL
		759	# include "ev_poll.c"
		760	#endif
435	#if EV_USE_SELECT	761	#if EV_USE_SELECT
436	# include "ev_select.c"	762	# include "ev_select.c"
437	#endif	763	#endif
438		764
439	int	765	int
…		…
446	ev_version_minor (void)	772	ev_version_minor (void)
447	{	773	{
448	return EV_VERSION_MINOR;	774	return EV_VERSION_MINOR;
449	}	775	}
450		776
451	int ev_init (int flags)	777	/* return true if we are running with elevated privileges and should ignore env variables */
		778	static int
		779	enable_secure (void)
452	{	780	{
		781	#ifdef _WIN32
		782	return 0;
		783	#else
		784	return getuid () != geteuid ()
		785	\|\| getgid () != getegid ();
		786	#endif
		787	}
		788
		789	unsigned int
		790	ev_method (EV_P)
		791	{
		792	return method;
		793	}
		794
		795	static void
		796	loop_init (EV_P_ unsigned int flags)
		797	{
453	if (!ev_method)	798	if (!method)
454	{	799	{
455	#if EV_USE_MONOTONIC	800	#if EV_USE_MONOTONIC
456	{	801	{
457	struct timespec ts;	802	struct timespec ts;
458	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
459	have_monotonic = 1;	804	have_monotonic = 1;
460	}	805	}
461	#endif	806	#endif
462		807
463	ev_now = ev_time ();	808	ev_rt_now = ev_time ();
464	now = get_clock ();	809	mn_now = get_clock ();
		810	now_floor = mn_now;
465	diff = ev_now - now;	811	rtmn_diff = ev_rt_now - mn_now;
466		812
467	if (pipe (sigpipe))	813	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
468	return 0;	814	flags = atoi (getenv ("LIBEV_FLAGS"));
469		815
470	ev_method = EVMETHOD_NONE;	816	if (!(flags & 0x0000ffff))
		817	flags \|= 0x0000ffff;
		818
		819	method = 0;
		820	#if EV_USE_PORT
		821	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		822	#endif
		823	#if EV_USE_KQUEUE
		824	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		825	#endif
471	#if EV_USE_EPOLL	826	#if EV_USE_EPOLL
472	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	827	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		828	#endif
		829	#if EV_USE_POLL
		830	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
473	#endif	831	#endif
474	#if EV_USE_SELECT	832	#if EV_USE_SELECT
475	if (ev_method == EVMETHOD_NONE) select_init (flags);	833	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
476	#endif	834	#endif
477		835
		836	ev_init (&sigev, sigcb);
		837	ev_set_priority (&sigev, EV_MAXPRI);
		838	}
		839	}
		840
		841	static void
		842	loop_destroy (EV_P)
		843	{
		844	int i;
		845
		846	#if EV_USE_PORT
		847	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		848	#endif
		849	#if EV_USE_KQUEUE
		850	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		851	#endif
		852	#if EV_USE_EPOLL
		853	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		854	#endif
		855	#if EV_USE_POLL
		856	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		857	#endif
		858	#if EV_USE_SELECT
		859	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		860	#endif
		861
		862	for (i = NUMPRI; i--; )
		863	array_free (pending, [i]);
		864
		865	/* have to use the microsoft-never-gets-it-right macro */
		866	array_free (fdchange, EMPTY0);
		867	array_free (timer, EMPTY0);
		868	#if EV_PERIODICS
		869	array_free (periodic, EMPTY0);
		870	#endif
		871	array_free (idle, EMPTY0);
		872	array_free (prepare, EMPTY0);
		873	array_free (check, EMPTY0);
		874
		875	method = 0;
		876	}
		877
		878	static void
		879	loop_fork (EV_P)
		880	{
		881	#if EV_USE_PORT
		882	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		883	#endif
		884	#if EV_USE_KQUEUE
		885	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		886	#endif
		887	#if EV_USE_EPOLL
		888	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		889	#endif
		890
		891	if (ev_is_active (&sigev))
		892	{
		893	/* default loop */
		894
		895	ev_ref (EV_A);
		896	ev_io_stop (EV_A_ &sigev);
		897	close (sigpipe [0]);
		898	close (sigpipe [1]);
		899
		900	while (pipe (sigpipe))
		901	syserr ("(libev) error creating pipe");
		902
		903	siginit (EV_A);
		904	}
		905
		906	postfork = 0;
		907	}
		908
		909	#if EV_MULTIPLICITY
		910	struct ev_loop *
		911	ev_loop_new (unsigned int flags)
		912	{
		913	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		914
		915	memset (loop, 0, sizeof (struct ev_loop));
		916
		917	loop_init (EV_A_ flags);
		918
		919	if (ev_method (EV_A))
		920	return loop;
		921
		922	return 0;
		923	}
		924
		925	void
		926	ev_loop_destroy (EV_P)
		927	{
		928	loop_destroy (EV_A);
		929	ev_free (loop);
		930	}
		931
		932	void
		933	ev_loop_fork (EV_P)
		934	{
		935	postfork = 1;
		936	}
		937
		938	#endif
		939
		940	#if EV_MULTIPLICITY
		941	struct ev_loop *
		942	ev_default_loop_init (unsigned int flags)
		943	#else
		944	int
		945	ev_default_loop (unsigned int flags)
		946	#endif
		947	{
		948	if (sigpipe [0] == sigpipe [1])
		949	if (pipe (sigpipe))
		950	return 0;
		951
		952	if (!ev_default_loop_ptr)
		953	{
		954	#if EV_MULTIPLICITY
		955	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		956	#else
		957	ev_default_loop_ptr = 1;
		958	#endif
		959
		960	loop_init (EV_A_ flags);
		961
478	if (ev_method)	962	if (ev_method (EV_A))
479	{	963	{
480	ev_watcher_init (&sigev, sigcb);
481	siginit ();	964	siginit (EV_A);
482		965
		966	#ifndef _WIN32
483	ev_signal_init (&childev, childcb, SIGCHLD);	967	ev_signal_init (&childev, childcb, SIGCHLD);
		968	ev_set_priority (&childev, EV_MAXPRI);
484	ev_signal_start (&childev);	969	ev_signal_start (EV_A_ &childev);
		970	ev_unref (EV_A); /* child watcher should not keep loop alive */
		971	#endif
485	}	972	}
		973	else
		974	ev_default_loop_ptr = 0;
486	}	975	}
487		976
488	return ev_method;	977	return ev_default_loop_ptr;
		978	}
		979
		980	void
		981	ev_default_destroy (void)
		982	{
		983	#if EV_MULTIPLICITY
		984	struct ev_loop *loop = ev_default_loop_ptr;
		985	#endif
		986
		987	#ifndef _WIN32
		988	ev_ref (EV_A); /* child watcher */
		989	ev_signal_stop (EV_A_ &childev);
		990	#endif
		991
		992	ev_ref (EV_A); /* signal watcher */
		993	ev_io_stop (EV_A_ &sigev);
		994
		995	close (sigpipe [0]); sigpipe [0] = 0;
		996	close (sigpipe [1]); sigpipe [1] = 0;
		997
		998	loop_destroy (EV_A);
		999	}
		1000
		1001	void
		1002	ev_default_fork (void)
		1003	{
		1004	#if EV_MULTIPLICITY
		1005	struct ev_loop *loop = ev_default_loop_ptr;
		1006	#endif
		1007
		1008	if (method)
		1009	postfork = 1;
489	}	1010	}
490		1011
491	/*****************************************************************************/	1012	/*****************************************************************************/
492		1013
493	void
494	ev_prefork (void)
495	{
496	/* nop */
497	}
498
499	void
500	ev_postfork_parent (void)
501	{
502	/* nop */
503	}
504
505	void
506	ev_postfork_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	1014	static int
		1015	any_pending (EV_P)
		1016	{
		1017	int pri;
		1018
		1019	for (pri = NUMPRI; pri--; )
		1020	if (pendingcnt [pri])
		1021	return 1;
		1022
		1023	return 0;
		1024	}
		1025
		1026	inline void
523	call_pending (void)	1027	call_pending (EV_P)
524	{	1028	{
		1029	int pri;
		1030
		1031	for (pri = NUMPRI; pri--; )
525	while (pendingcnt)	1032	while (pendingcnt [pri])
526	{	1033	{
527	ANPENDING *p = pendings + --pendingcnt;	1034	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
528		1035
529	if (p->w)	1036	if (expect_true (p->w))
530	{	1037	{
531	p->w->pending = 0;	1038	p->w->pending = 0;
532	p->w->cb (p->w, p->events);	1039	EV_CB_INVOKE (p->w, p->events);
533	}	1040	}
534	}	1041	}
535	}	1042	}
536		1043
537	static void	1044	inline void
538	timers_reify (void)	1045	timers_reify (EV_P)
539	{	1046	{
540	while (timercnt && timers [0]->at <= now)	1047	while (timercnt && ((WT)timers [0])->at <= mn_now)
541	{	1048	{
542	struct ev_timer *w = timers [0];	1049	struct ev_timer *w = timers [0];
		1050
		1051	assert (("inactive timer on timer heap detected", ev_is_active (w)));
543		1052
544	/* first reschedule or stop timer */	1053	/* first reschedule or stop timer */
545	if (w->repeat)	1054	if (w->repeat)
546	{	1055	{
547	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1056	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1057
548	w->at = now + w->repeat;	1058	((WT)w)->at += w->repeat;
		1059	if (((WT)w)->at < mn_now)
		1060	((WT)w)->at = mn_now;
		1061
549	downheap ((WT *)timers, timercnt, 0);	1062	downheap ((WT *)timers, timercnt, 0);
550	}	1063	}
551	else	1064	else
552	ev_timer_stop (w); /* nonrepeating: stop timer */	1065	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
553		1066
554	event ((W)w, EV_TIMEOUT);	1067	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
555	}	1068	}
556	}	1069	}
557		1070
558	static void	1071	#if EV_PERIODICS
		1072	inline void
559	periodics_reify (void)	1073	periodics_reify (EV_P)
560	{	1074	{
561	while (periodiccnt && periodics [0]->at <= ev_now)	1075	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
562	{	1076	{
563	struct ev_periodic *w = periodics [0];	1077	struct ev_periodic *w = periodics [0];
564		1078
		1079	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1080
565	/* first reschedule or stop timer */	1081	/* first reschedule or stop timer */
566	if (w->interval)	1082	if (w->reschedule_cb)
567	{	1083	{
		1084	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1085	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1086	downheap ((WT *)periodics, periodiccnt, 0);
		1087	}
		1088	else if (w->interval)
		1089	{
568	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1090	((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));	1091	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);	1092	downheap ((WT *)periodics, periodiccnt, 0);
571	}	1093	}
572	else	1094	else
573	ev_periodic_stop (w); /* nonrepeating: stop timer */	1095	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
574		1096
575	event ((W)w, EV_PERIODIC);	1097	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
576	}	1098	}
577	}	1099	}
578		1100
579	static void	1101	static void
580	periodics_reschedule (ev_tstamp diff)	1102	periodics_reschedule (EV_P)
581	{	1103	{
582	int i;	1104	int i;
583		1105
584	/* adjust periodics after time jump */	1106	/* adjust periodics after time jump */
585	for (i = 0; i < periodiccnt; ++i)	1107	for (i = 0; i < periodiccnt; ++i)
586	{	1108	{
587	struct ev_periodic *w = periodics [i];	1109	struct ev_periodic *w = periodics [i];
588		1110
		1111	if (w->reschedule_cb)
		1112	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
589	if (w->interval)	1113	else if (w->interval)
		1114	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1115	}
		1116
		1117	/* now rebuild the heap */
		1118	for (i = periodiccnt >> 1; i--; )
		1119	downheap ((WT *)periodics, periodiccnt, i);
		1120	}
		1121	#endif
		1122
		1123	inline int
		1124	time_update_monotonic (EV_P)
		1125	{
		1126	mn_now = get_clock ();
		1127
		1128	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1129	{
		1130	ev_rt_now = rtmn_diff + mn_now;
		1131	return 0;
		1132	}
		1133	else
		1134	{
		1135	now_floor = mn_now;
		1136	ev_rt_now = ev_time ();
		1137	return 1;
		1138	}
		1139	}
		1140
		1141	inline void
		1142	time_update (EV_P)
		1143	{
		1144	int i;
		1145
		1146	#if EV_USE_MONOTONIC
		1147	if (expect_true (have_monotonic))
		1148	{
		1149	if (time_update_monotonic (EV_A))
590	{	1150	{
591	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1151	ev_tstamp odiff = rtmn_diff;
592		1152
593	if (fabs (diff) >= 1e-4)	1153	for (i = 4; --i; ) /* loop a few times, before making important decisions */
594	{	1154	{
595	ev_periodic_stop (w);	1155	rtmn_diff = ev_rt_now - mn_now;
596	ev_periodic_start (w);
597		1156
598	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1157	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1158	return; /* all is well */
		1159
		1160	ev_rt_now = ev_time ();
		1161	mn_now = get_clock ();
		1162	now_floor = mn_now;
599	}	1163	}
		1164
		1165	# if EV_PERIODICS
		1166	periodics_reschedule (EV_A);
		1167	# endif
		1168	/* no timer adjustment, as the monotonic clock doesn't jump */
		1169	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
600	}	1170	}
601	}	1171	}
602	}	1172	else
603		1173	#endif
604	static void	1174	{
605	time_update (void)
606	{
607	int i;
608
609	ev_now = ev_time ();	1175	ev_rt_now = ev_time ();
610		1176
611	if (have_monotonic)	1177	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	{	1178	{
617	now = get_clock ();	1179	#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);	1180	periodics_reschedule (EV_A);
		1181	#endif
634		1182
635	/* adjust timers. this is easy, as the offset is the same for all */	1183	/* adjust timers. this is easy, as the offset is the same for all */
636	for (i = 0; i < timercnt; ++i)	1184	for (i = 0; i < timercnt; ++i)
637	timers [i]->at += diff;	1185	((WT)timers [i])->at += ev_rt_now - mn_now;
638	}	1186	}
639		1187
640	now = ev_now;	1188	mn_now = ev_rt_now;
641	}	1189	}
642	}	1190	}
643		1191
644	int ev_loop_done;	1192	void
		1193	ev_ref (EV_P)
		1194	{
		1195	++activecnt;
		1196	}
645		1197
		1198	void
		1199	ev_unref (EV_P)
		1200	{
		1201	--activecnt;
		1202	}
		1203
		1204	static int loop_done;
		1205
		1206	void
646	void ev_loop (int flags)	1207	ev_loop (EV_P_ int flags)
647	{	1208	{
648	double block;	1209	double block;
649	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1210	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
650		1211
651	do	1212	while (activecnt)
652	{	1213	{
653	/* queue check watchers (and execute them) */	1214	/* queue check watchers (and execute them) */
654	if (preparecnt)	1215	if (expect_false (preparecnt))
655	{	1216	{
656	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1217	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
657	call_pending ();	1218	call_pending (EV_A);
658	}	1219	}
659		1220
		1221	/* we might have forked, so reify kernel state if necessary */
		1222	if (expect_false (postfork))
		1223	loop_fork (EV_A);
		1224
660	/* update fd-related kernel structures */	1225	/* update fd-related kernel structures */
661	fd_reify ();	1226	fd_reify (EV_A);
662		1227
663	/* calculate blocking time */	1228	/* calculate blocking time */
664		1229
665	/* we only need this for !monotonic clockor timers, but as we basically	1230	/* we only need this for !monotonic clock or timers, but as we basically
666	always have timers, we just calculate it always */	1231	always have timers, we just calculate it always */
		1232	#if EV_USE_MONOTONIC
		1233	if (expect_true (have_monotonic))
		1234	time_update_monotonic (EV_A);
		1235	else
		1236	#endif
		1237	{
667	ev_now = ev_time ();	1238	ev_rt_now = ev_time ();
		1239	mn_now = ev_rt_now;
		1240	}
668		1241
669	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1242	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
670	block = 0.;	1243	block = 0.;
671	else	1244	else
672	{	1245	{
673	block = MAX_BLOCKTIME;	1246	block = MAX_BLOCKTIME;
674		1247
675	if (timercnt)	1248	if (timercnt)
676	{	1249	{
677	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1250	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
678	if (block > to) block = to;	1251	if (block > to) block = to;
679	}	1252	}
680		1253
		1254	#if EV_PERIODICS
681	if (periodiccnt)	1255	if (periodiccnt)
682	{	1256	{
683	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1257	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
684	if (block > to) block = to;	1258	if (block > to) block = to;
685	}	1259	}
		1260	#endif
686		1261
687	if (block < 0.) block = 0.;	1262	if (expect_false (block < 0.)) block = 0.;
688	}	1263	}
689		1264
690	method_poll (block);	1265	method_poll (EV_A_ block);
691		1266
692	/* update ev_now, do magic */	1267	/* update ev_rt_now, do magic */
693	time_update ();	1268	time_update (EV_A);
694		1269
695	/* queue pending timers and reschedule them */	1270	/* queue pending timers and reschedule them */
696	timers_reify (); /* relative timers called last */	1271	timers_reify (EV_A); /* relative timers called last */
		1272	#if EV_PERIODICS
697	periodics_reify (); /* absolute timers called first */	1273	periodics_reify (EV_A); /* absolute timers called first */
		1274	#endif
698		1275
699	/* queue idle watchers unless io or timers are pending */	1276	/* queue idle watchers unless io or timers are pending */
700	if (!pendingcnt)	1277	if (idlecnt && !any_pending (EV_A))
701	queue_events ((W *)idles, idlecnt, EV_IDLE);	1278	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
702		1279
703	/* queue check watchers, to be executed first */	1280	/* queue check watchers, to be executed first */
704	if (checkcnt)	1281	if (expect_false (checkcnt))
705	queue_events ((W *)checks, checkcnt, EV_CHECK);	1282	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
706		1283
707	call_pending ();	1284	call_pending (EV_A);
708	}
709	while (!ev_loop_done);
710		1285
		1286	if (expect_false (loop_done))
		1287	break;
		1288	}
		1289
711	if (ev_loop_done != 2)	1290	if (loop_done != 2)
712	ev_loop_done = 0;	1291	loop_done = 0;
		1292	}
		1293
		1294	void
		1295	ev_unloop (EV_P_ int how)
		1296	{
		1297	loop_done = how;
713	}	1298	}
714		1299
715	/*****************************************************************************/	1300	/*****************************************************************************/
716		1301
717	static void	1302	inline void
718	wlist_add (WL *head, WL elem)	1303	wlist_add (WL *head, WL elem)
719	{	1304	{
720	elem->next = *head;	1305	elem->next = *head;
721	*head = elem;	1306	*head = elem;
722	}	1307	}
723		1308
724	static void	1309	inline void
725	wlist_del (WL *head, WL elem)	1310	wlist_del (WL *head, WL elem)
726	{	1311	{
727	while (*head)	1312	while (*head)
728	{	1313	{
729	if (*head == elem)	1314	if (*head == elem)
…		…
734		1319
735	head = &(*head)->next;	1320	head = &(*head)->next;
736	}	1321	}
737	}	1322	}
738		1323
739	static void	1324	inline void
740	ev_clear_pending (W w)	1325	ev_clear_pending (EV_P_ W w)
741	{	1326	{
742	if (w->pending)	1327	if (w->pending)
743	{	1328	{
744	pendings [w->pending - 1].w = 0;	1329	pendings [ABSPRI (w)][w->pending - 1].w = 0;
745	w->pending = 0;	1330	w->pending = 0;
746	}	1331	}
747	}	1332	}
748		1333
749	static void	1334	inline void
750	ev_start (W w, int active)	1335	ev_start (EV_P_ W w, int active)
751	{	1336	{
		1337	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1338	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1339
752	w->active = active;	1340	w->active = active;
		1341	ev_ref (EV_A);
753	}	1342	}
754		1343
755	static void	1344	inline void
756	ev_stop (W w)	1345	ev_stop (EV_P_ W w)
757	{	1346	{
		1347	ev_unref (EV_A);
758	w->active = 0;	1348	w->active = 0;
759	}	1349	}
760		1350
761	/*****************************************************************************/	1351	/*****************************************************************************/
762		1352
763	void	1353	void
764	ev_io_start (struct ev_io *w)	1354	ev_io_start (EV_P_ struct ev_io *w)
765	{	1355	{
766	if (ev_is_active (w))
767	return;
768
769	int fd = w->fd;	1356	int fd = w->fd;
770		1357
		1358	if (expect_false (ev_is_active (w)))
		1359	return;
		1360
771	assert (("ev_io_start called with negative fd", fd >= 0));	1361	assert (("ev_io_start called with negative fd", fd >= 0));
772		1362
773	ev_start ((W)w, 1);	1363	ev_start (EV_A_ (W)w, 1);
774	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1364	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
775	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1365	wlist_add ((WL *)&anfds[fd].head, (WL)w);
776		1366
777	fd_change (fd);	1367	fd_change (EV_A_ fd);
778	}	1368	}
779		1369
780	void	1370	void
781	ev_io_stop (struct ev_io *w)	1371	ev_io_stop (EV_P_ struct ev_io *w)
782	{	1372	{
783	ev_clear_pending ((W)w);	1373	ev_clear_pending (EV_A_ (W)w);
784	if (!ev_is_active (w))	1374	if (expect_false (!ev_is_active (w)))
785	return;	1375	return;
		1376
		1377	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
786		1378
787	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1379	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
788	ev_stop ((W)w);	1380	ev_stop (EV_A_ (W)w);
789		1381
790	fd_change (w->fd);	1382	fd_change (EV_A_ w->fd);
791	}	1383	}
792		1384
793	void	1385	void
794	ev_timer_start (struct ev_timer *w)	1386	ev_timer_start (EV_P_ struct ev_timer *w)
795	{	1387	{
796	if (ev_is_active (w))	1388	if (expect_false (ev_is_active (w)))
797	return;	1389	return;
798		1390
799	w->at += now;	1391	((WT)w)->at += mn_now;
800		1392
801	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1393	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
802		1394
803	ev_start ((W)w, ++timercnt);	1395	ev_start (EV_A_ (W)w, ++timercnt);
804	array_needsize (timers, timermax, timercnt, );	1396	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
805	timers [timercnt - 1] = w;	1397	timers [timercnt - 1] = w;
806	upheap ((WT *)timers, timercnt - 1);	1398	upheap ((WT *)timers, timercnt - 1);
807	}
808		1399
		1400	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1401	}
		1402
809	void	1403	void
810	ev_timer_stop (struct ev_timer *w)	1404	ev_timer_stop (EV_P_ struct ev_timer *w)
811	{	1405	{
812	ev_clear_pending ((W)w);	1406	ev_clear_pending (EV_A_ (W)w);
813	if (!ev_is_active (w))	1407	if (expect_false (!ev_is_active (w)))
814	return;	1408	return;
815		1409
		1410	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1411
816	if (w->active < timercnt--)	1412	if (expect_true (((W)w)->active < timercnt--))
817	{	1413	{
818	timers [w->active - 1] = timers [timercnt];	1414	timers [((W)w)->active - 1] = timers [timercnt];
819	downheap ((WT *)timers, timercnt, w->active - 1);	1415	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
820	}	1416	}
821		1417
822	w->at = w->repeat;	1418	((WT)w)->at -= mn_now;
823		1419
824	ev_stop ((W)w);	1420	ev_stop (EV_A_ (W)w);
825	}	1421	}
826		1422
827	void	1423	void
828	ev_timer_again (struct ev_timer *w)	1424	ev_timer_again (EV_P_ struct ev_timer *w)
829	{	1425	{
830	if (ev_is_active (w))	1426	if (ev_is_active (w))
831	{	1427	{
832	if (w->repeat)	1428	if (w->repeat)
833	{	1429	{
834	w->at = now + w->repeat;	1430	((WT)w)->at = mn_now + w->repeat;
835	downheap ((WT *)timers, timercnt, w->active - 1);	1431	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
836	}	1432	}
837	else	1433	else
838	ev_timer_stop (w);	1434	ev_timer_stop (EV_A_ w);
839	}	1435	}
840	else if (w->repeat)	1436	else if (w->repeat)
		1437	{
		1438	w->at = w->repeat;
841	ev_timer_start (w);	1439	ev_timer_start (EV_A_ w);
		1440	}
842	}	1441	}
843		1442
		1443	#if EV_PERIODICS
844	void	1444	void
845	ev_periodic_start (struct ev_periodic *w)	1445	ev_periodic_start (EV_P_ struct ev_periodic *w)
846	{	1446	{
847	if (ev_is_active (w))	1447	if (expect_false (ev_is_active (w)))
848	return;	1448	return;
849		1449
		1450	if (w->reschedule_cb)
		1451	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1452	else if (w->interval)
		1453	{
850	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1454	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 */	1455	/* 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;	1456	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1457	}
855		1458
856	ev_start ((W)w, ++periodiccnt);	1459	ev_start (EV_A_ (W)w, ++periodiccnt);
857	array_needsize (periodics, periodicmax, periodiccnt, );	1460	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
858	periodics [periodiccnt - 1] = w;	1461	periodics [periodiccnt - 1] = w;
859	upheap ((WT *)periodics, periodiccnt - 1);	1462	upheap ((WT *)periodics, periodiccnt - 1);
860	}
861		1463
		1464	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1465	}
		1466
862	void	1467	void
863	ev_periodic_stop (struct ev_periodic *w)	1468	ev_periodic_stop (EV_P_ struct ev_periodic *w)
864	{	1469	{
865	ev_clear_pending ((W)w);	1470	ev_clear_pending (EV_A_ (W)w);
866	if (!ev_is_active (w))	1471	if (expect_false (!ev_is_active (w)))
867	return;	1472	return;
868		1473
		1474	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1475
869	if (w->active < periodiccnt--)	1476	if (expect_true (((W)w)->active < periodiccnt--))
870	{	1477	{
871	periodics [w->active - 1] = periodics [periodiccnt];	1478	periodics [((W)w)->active - 1] = periodics [periodiccnt];
872	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1479	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
873	}	1480	}
874		1481
875	ev_stop ((W)w);	1482	ev_stop (EV_A_ (W)w);
876	}	1483	}
877		1484
878	void	1485	void
		1486	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1487	{
		1488	/* TODO: use adjustheap and recalculation */
		1489	ev_periodic_stop (EV_A_ w);
		1490	ev_periodic_start (EV_A_ w);
		1491	}
		1492	#endif
		1493
		1494	void
		1495	ev_idle_start (EV_P_ struct ev_idle *w)
		1496	{
		1497	if (expect_false (ev_is_active (w)))
		1498	return;
		1499
		1500	ev_start (EV_A_ (W)w, ++idlecnt);
		1501	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1502	idles [idlecnt - 1] = w;
		1503	}
		1504
		1505	void
		1506	ev_idle_stop (EV_P_ struct ev_idle *w)
		1507	{
		1508	ev_clear_pending (EV_A_ (W)w);
		1509	if (expect_false (!ev_is_active (w)))
		1510	return;
		1511
		1512	idles [((W)w)->active - 1] = idles [--idlecnt];
		1513	ev_stop (EV_A_ (W)w);
		1514	}
		1515
		1516	void
		1517	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1518	{
		1519	if (expect_false (ev_is_active (w)))
		1520	return;
		1521
		1522	ev_start (EV_A_ (W)w, ++preparecnt);
		1523	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1524	prepares [preparecnt - 1] = w;
		1525	}
		1526
		1527	void
		1528	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1529	{
		1530	ev_clear_pending (EV_A_ (W)w);
		1531	if (expect_false (!ev_is_active (w)))
		1532	return;
		1533
		1534	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1535	ev_stop (EV_A_ (W)w);
		1536	}
		1537
		1538	void
		1539	ev_check_start (EV_P_ struct ev_check *w)
		1540	{
		1541	if (expect_false (ev_is_active (w)))
		1542	return;
		1543
		1544	ev_start (EV_A_ (W)w, ++checkcnt);
		1545	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1546	checks [checkcnt - 1] = w;
		1547	}
		1548
		1549	void
		1550	ev_check_stop (EV_P_ struct ev_check *w)
		1551	{
		1552	ev_clear_pending (EV_A_ (W)w);
		1553	if (expect_false (!ev_is_active (w)))
		1554	return;
		1555
		1556	checks [((W)w)->active - 1] = checks [--checkcnt];
		1557	ev_stop (EV_A_ (W)w);
		1558	}
		1559
		1560	#ifndef SA_RESTART
		1561	# define SA_RESTART 0
		1562	#endif
		1563
		1564	void
879	ev_signal_start (struct ev_signal *w)	1565	ev_signal_start (EV_P_ struct ev_signal *w)
880	{	1566	{
		1567	#if EV_MULTIPLICITY
		1568	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1569	#endif
881	if (ev_is_active (w))	1570	if (expect_false (ev_is_active (w)))
882	return;	1571	return;
883		1572
884	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1573	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
885		1574
886	ev_start ((W)w, 1);	1575	ev_start (EV_A_ (W)w, 1);
887	array_needsize (signals, signalmax, w->signum, signals_init);	1576	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
888	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1577	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
889		1578
890	if (!w->next)	1579	if (!((WL)w)->next)
891	{	1580	{
		1581	#if _WIN32
		1582	signal (w->signum, sighandler);
		1583	#else
892	struct sigaction sa;	1584	struct sigaction sa;
893	sa.sa_handler = sighandler;	1585	sa.sa_handler = sighandler;
894	sigfillset (&sa.sa_mask);	1586	sigfillset (&sa.sa_mask);
895	sa.sa_flags = 0;	1587	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
896	sigaction (w->signum, &sa, 0);	1588	sigaction (w->signum, &sa, 0);
		1589	#endif
897	}	1590	}
898	}	1591	}
899		1592
900	void	1593	void
901	ev_signal_stop (struct ev_signal *w)	1594	ev_signal_stop (EV_P_ struct ev_signal *w)
902	{	1595	{
903	ev_clear_pending ((W)w);	1596	ev_clear_pending (EV_A_ (W)w);
904	if (!ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
905	return;	1598	return;
906		1599
907	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1600	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
908	ev_stop ((W)w);	1601	ev_stop (EV_A_ (W)w);
909		1602
910	if (!signals [w->signum - 1].head)	1603	if (!signals [w->signum - 1].head)
911	signal (w->signum, SIG_DFL);	1604	signal (w->signum, SIG_DFL);
912	}	1605	}
913		1606
914	void	1607	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)	1608	ev_child_start (EV_P_ struct ev_child *w)
982	{	1609	{
		1610	#if EV_MULTIPLICITY
		1611	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1612	#endif
983	if (ev_is_active (w))	1613	if (expect_false (ev_is_active (w)))
984	return;	1614	return;
985		1615
986	ev_start ((W)w, 1);	1616	ev_start (EV_A_ (W)w, 1);
987	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1617	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
988	}	1618	}
989		1619
990	void	1620	void
991	ev_child_stop (struct ev_child *w)	1621	ev_child_stop (EV_P_ struct ev_child *w)
992	{	1622	{
993	ev_clear_pending ((W)w);	1623	ev_clear_pending (EV_A_ (W)w);
994	if (ev_is_active (w))	1624	if (expect_false (!ev_is_active (w)))
995	return;	1625	return;
996		1626
997	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1627	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
998	ev_stop ((W)w);	1628	ev_stop (EV_A_ (W)w);
999	}	1629	}
1000		1630
1001	/*****************************************************************************/	1631	/*****************************************************************************/
1002		1632
1003	struct ev_once	1633	struct ev_once
…		…
1007	void (cb)(int revents, void arg);	1637	void (cb)(int revents, void arg);
1008	void *arg;	1638	void *arg;
1009	};	1639	};
1010		1640
1011	static void	1641	static void
1012	once_cb (struct ev_once *once, int revents)	1642	once_cb (EV_P_ struct ev_once *once, int revents)
1013	{	1643	{
1014	void (cb)(int revents, void arg) = once->cb;	1644	void (cb)(int revents, void arg) = once->cb;
1015	void *arg = once->arg;	1645	void *arg = once->arg;
1016		1646
1017	ev_io_stop (&once->io);	1647	ev_io_stop (EV_A_ &once->io);
1018	ev_timer_stop (&once->to);	1648	ev_timer_stop (EV_A_ &once->to);
1019	free (once);	1649	ev_free (once);
1020		1650
1021	cb (revents, arg);	1651	cb (revents, arg);
1022	}	1652	}
1023		1653
1024	static void	1654	static void
1025	once_cb_io (struct ev_io *w, int revents)	1655	once_cb_io (EV_P_ struct ev_io *w, int revents)
1026	{	1656	{
1027	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1657	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1028	}	1658	}
1029		1659
1030	static void	1660	static void
1031	once_cb_to (struct ev_timer *w, int revents)	1661	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1032	{	1662	{
1033	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1663	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1034	}	1664	}
1035		1665
1036	void	1666	void
1037	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1667	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1038	{	1668	{
1039	struct ev_once *once = malloc (sizeof (struct ev_once));	1669	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1040		1670
1041	if (!once)	1671	if (expect_false (!once))
		1672	{
1042	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1673	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1043	else	1674	return;
1044	{	1675	}
		1676
1045	once->cb = cb;	1677	once->cb = cb;
1046	once->arg = arg;	1678	once->arg = arg;
1047		1679
1048	ev_watcher_init (&once->io, once_cb_io);	1680	ev_init (&once->io, once_cb_io);
1049	if (fd >= 0)	1681	if (fd >= 0)
1050	{	1682	{
1051	ev_io_set (&once->io, fd, events);	1683	ev_io_set (&once->io, fd, events);
1052	ev_io_start (&once->io);	1684	ev_io_start (EV_A_ &once->io);
1053	}	1685	}
1054		1686
1055	ev_watcher_init (&once->to, once_cb_to);	1687	ev_init (&once->to, once_cb_to);
1056	if (timeout >= 0.)	1688	if (timeout >= 0.)
1057	{	1689	{
1058	ev_timer_set (&once->to, timeout, 0.);	1690	ev_timer_set (&once->to, timeout, 0.);
1059	ev_timer_start (&once->to);	1691	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	{	1692	}
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	}	1693	}
1141		1694
		1695	#ifdef __cplusplus
		1696	}
1142	#endif	1697	#endif
1143		1698
1144
1145
1146

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Comparing libev/ev.c (file contents): Revision 1.34 by root, Thu Nov 1 11:43:11 2007 UTC vs. Revision 1.127 by root, Sun Nov 18 02:17:57 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.34 by root, Thu Nov 1 11:43:11 2007 UTC vs.
Revision 1.127 by root, Sun Nov 18 02:17:57 2007 UTC