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

Comparing libev/ev.c (file contents):
Revision 1.30 by root, Thu Nov 1 08:28:33 2007 UTC vs.
Revision 1.128 by root, Thu Nov 22 12:28:27 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
		170	#ifndef CLOCK_REALTIME
63	#ifndef EV_USE_REALTIME	171	# undef EV_USE_REALTIME
64	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	172	# define EV_USE_REALTIME 0
65	#endif	173	#endif
		174
		175	#if EV_SELECT_IS_WINSOCKET
		176	# include <winsock.h>
		177	#endif
		178
		179	/**/
66		180
67	#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) */
68	#define MAX_BLOCKTIME 59.731	182	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
69	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	183	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
		184	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
70		185
		186	#ifdef EV_H
		187	# include EV_H
		188	#else
71	#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 */
72		208
73	typedef struct ev_watcher *W;	209	typedef struct ev_watcher *W;
74	typedef struct ev_watcher_list *WL;	210	typedef struct ev_watcher_list *WL;
75	typedef struct ev_watcher_time *WT;	211	typedef struct ev_watcher_time *WT;
76		212
77	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
78	ev_tstamp ev_now;	302	ev_tstamp ev_rt_now;
79	int ev_method;	303	#define VAR(name,decl) static decl;
		304	#include "ev_vars.h"
		305	#undef VAR
80		306
81	static int have_monotonic; /* runtime */	307	static int ev_default_loop_ptr;
82		308
83	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	309	#endif
84	static void (*method_modify)(int fd, int oev, int nev);
85	static void (*method_poll)(ev_tstamp timeout);
86		310
87	/*****************************************************************************/	311	/*****************************************************************************/
88		312
89	ev_tstamp	313	ev_tstamp
90	ev_time (void)	314	ev_time (void)
…		…
98	gettimeofday (&tv, 0);	322	gettimeofday (&tv, 0);
99	return tv.tv_sec + tv.tv_usec * 1e-6;	323	return tv.tv_sec + tv.tv_usec * 1e-6;
100	#endif	324	#endif
101	}	325	}
102		326
103	static ev_tstamp	327	inline ev_tstamp
104	get_clock (void)	328	get_clock (void)
105	{	329	{
106	#if EV_USE_MONOTONIC	330	#if EV_USE_MONOTONIC
107	if (have_monotonic)	331	if (expect_true (have_monotonic))
108	{	332	{
109	struct timespec ts;	333	struct timespec ts;
110	clock_gettime (CLOCK_MONOTONIC, &ts);	334	clock_gettime (CLOCK_MONOTONIC, &ts);
111	return ts.tv_sec + ts.tv_nsec * 1e-9;	335	return ts.tv_sec + ts.tv_nsec * 1e-9;
112	}	336	}
113	#endif	337	#endif
114		338
115	return ev_time ();	339	return ev_time ();
116	}	340	}
117		341
		342	#if EV_MULTIPLICITY
		343	ev_tstamp
		344	ev_now (EV_P)
		345	{
		346	return ev_rt_now;
		347	}
		348	#endif
		349
118	#define array_roundsize(base,n) ((n) \| 4 & ~3)	350	#define array_roundsize(type,n) (((n) \| 4) & ~3)
119		351
120	#define array_needsize(base,cur,cnt,init) \	352	#define array_needsize(type,base,cur,cnt,init) \
121	if ((cnt) > cur) \	353	if (expect_false ((cnt) > cur)) \
122	{ \	354	{ \
123	int newcnt = cur; \	355	int newcnt = cur; \
124	do \	356	do \
125	{ \	357	{ \
126	newcnt = array_roundsize (base, newcnt << 1); \	358	newcnt = array_roundsize (type, newcnt << 1); \
127	} \	359	} \
128	while ((cnt) > newcnt); \	360	while ((cnt) > newcnt); \
129	\	361	\
130	base = realloc (base, sizeof (base) (newcnt)); \	362	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
131	init (base + cur, newcnt - cur); \	363	init (base + cur, newcnt - cur); \
132	cur = newcnt; \	364	cur = newcnt; \
133	}	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;
134		377
135	/*****************************************************************************/	378	/*****************************************************************************/
136
137	typedef struct
138	{
139	struct ev_io *head;
140	int events;
141	} ANFD;
142
143	static ANFD *anfds;
144	static int anfdmax;
145		379
146	static void	380	static void
147	anfds_init (ANFD *base, int count)	381	anfds_init (ANFD *base, int count)
148	{	382	{
149	while (count--)	383	while (count--)
150	{	384	{
151	base->head = 0;	385	base->head = 0;
152	base->events = EV_NONE;	386	base->events = EV_NONE;
		387	base->reify = 0;
		388
153	++base;	389	++base;
154	}	390	}
155	}	391	}
156		392
157	typedef struct	393	void
		394	ev_feed_event (EV_P_ void *w, int revents)
158	{	395	{
159	W w;	396	W w_ = (W)w;
160	int events;
161	} ANPENDING;
162		397
163	static ANPENDING *pendings;	398	if (expect_false (w_->pending))
164	static int pendingmax, pendingcnt;	399	{
		400	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
		401	return;
		402	}
165		403
166	static void
167	event (W w, int events)
168	{
169	w->pending = ++pendingcnt;	404	w_->pending = ++pendingcnt [ABSPRI (w_)];
170	array_needsize (pendings, pendingmax, pendingcnt, );	405	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
171	pendings [pendingcnt - 1].w = w;	406	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
172	pendings [pendingcnt - 1].events = events;	407	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
173	}	408	}
174		409
175	static void	410	static void
176	queue_events (W *events, int eventcnt, int type)	411	queue_events (EV_P_ W *events, int eventcnt, int type)
177	{	412	{
178	int i;	413	int i;
179		414
180	for (i = 0; i < eventcnt; ++i)	415	for (i = 0; i < eventcnt; ++i)
181	event (events [i], type);	416	ev_feed_event (EV_A_ events [i], type);
182	}	417	}
183		418
184	static void	419	inline void
185	fd_event (int fd, int events)	420	fd_event (EV_P_ int fd, int revents)
186	{	421	{
187	ANFD *anfd = anfds + fd;	422	ANFD *anfd = anfds + fd;
188	struct ev_io *w;	423	struct ev_io *w;
189		424
190	for (w = anfd->head; w; w = w->next)	425	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
191	{	426	{
192	int ev = w->events & events;	427	int ev = w->events & revents;
193		428
194	if (ev)	429	if (ev)
195	event ((W)w, ev);	430	ev_feed_event (EV_A_ (W)w, ev);
196	}	431	}
		432	}
		433
		434	void
		435	ev_feed_fd_event (EV_P_ int fd, int revents)
		436	{
		437	fd_event (EV_A_ fd, revents);
197	}	438	}
198		439
199	/*****************************************************************************/	440	/*****************************************************************************/
200		441
201	static int *fdchanges;	442	inline void
202	static int fdchangemax, fdchangecnt;	443	fd_reify (EV_P)
203
204	static void
205	fd_reify (void)
206	{	444	{
207	int i;	445	int i;
208		446
209	for (i = 0; i < fdchangecnt; ++i)	447	for (i = 0; i < fdchangecnt; ++i)
210	{	448	{
…		…
212	ANFD *anfd = anfds + fd;	450	ANFD *anfd = anfds + fd;
213	struct ev_io *w;	451	struct ev_io *w;
214		452
215	int events = 0;	453	int events = 0;
216		454
217	for (w = anfd->head; w; w = w->next)	455	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
218	events \|= w->events;	456	events \|= w->events;
219		457
220	anfd->events &= ~EV_REIFY;	458	#if EV_SELECT_IS_WINSOCKET
221		459	if (events)
222	if (anfd->events != events)
223	{	460	{
224	method_modify (fd, anfd->events, events);	461	unsigned long argp;
225	anfd->events = events;	462	anfd->handle = _get_osfhandle (fd);
		463	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
226	}	464	}
		465	#endif
		466
		467	anfd->reify = 0;
		468
		469	method_modify (EV_A_ fd, anfd->events, events);
		470	anfd->events = events;
227	}	471	}
228		472
229	fdchangecnt = 0;	473	fdchangecnt = 0;
230	}	474	}
231		475
232	static void	476	static void
233	fd_change (int fd)	477	fd_change (EV_P_ int fd)
234	{	478	{
235	if (anfds [fd].events & EV_REIFY \|\| fdchangecnt < 0)	479	if (expect_false (anfds [fd].reify))
236	return;	480	return;
237		481
238	anfds [fd].events \|= EV_REIFY;	482	anfds [fd].reify = 1;
239		483
240	++fdchangecnt;	484	++fdchangecnt;
241	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	485	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
242	fdchanges [fdchangecnt - 1] = fd;	486	fdchanges [fdchangecnt - 1] = fd;
243	}	487	}
244		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
245	/* called on EBADF to verify fds */	511	/* called on EBADF to verify fds */
246	static void	512	static void
247	fd_recheck (void)	513	fd_ebadf (EV_P)
248	{	514	{
249	int fd;	515	int fd;
250		516
251	for (fd = 0; fd < anfdmax; ++fd)	517	for (fd = 0; fd < anfdmax; ++fd)
252	if (anfds [fd].events)	518	if (anfds [fd].events)
253	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	519	if (!fd_valid (fd) == -1 && errno == EBADF)
254	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)
255	{	531	{
256	event ((W)anfds [fd].head, EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT);	532	fd_kill (EV_A_ fd);
257	ev_io_stop (anfds [fd].head);	533	return;
258	}	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	}
259	}	550	}
260		551
261	/*****************************************************************************/	552	/*****************************************************************************/
262		553
263	static struct ev_timer **timers;
264	static int timermax, timercnt;
265
266	static struct ev_periodic **periodics;
267	static int periodicmax, periodiccnt;
268
269	static void	554	static void
270	upheap (WT *timers, int k)	555	upheap (WT *heap, int k)
271	{	556	{
272	WT w = timers [k];	557	WT w = heap [k];
273		558
274	while (k && timers [k >> 1]->at > w->at)	559	while (k && heap [k >> 1]->at > w->at)
275	{	560	{
276	timers [k] = timers [k >> 1];	561	heap [k] = heap [k >> 1];
277	timers [k]->active = k + 1;	562	((W)heap [k])->active = k + 1;
278	k >>= 1;	563	k >>= 1;
279	}	564	}
280		565
281	timers [k] = w;	566	heap [k] = w;
282	timers [k]->active = k + 1;	567	((W)heap [k])->active = k + 1;
283		568
284	}	569	}
285		570
286	static void	571	static void
287	downheap (WT *timers, int N, int k)	572	downheap (WT *heap, int N, int k)
288	{	573	{
289	WT w = timers [k];	574	WT w = heap [k];
290		575
291	while (k < (N >> 1))	576	while (k < (N >> 1))
292	{	577	{
293	int j = k << 1;	578	int j = k << 1;
294		579
295	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	580	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
296	++j;	581	++j;
297		582
298	if (w->at <= timers [j]->at)	583	if (w->at <= heap [j]->at)
299	break;	584	break;
300		585
301	timers [k] = timers [j];	586	heap [k] = heap [j];
302	timers [k]->active = k + 1;	587	((W)heap [k])->active = k + 1;
303	k = j;	588	k = j;
304	}	589	}
305		590
306	timers [k] = w;	591	heap [k] = w;
307	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);
308	}	600	}
309		601
310	/*****************************************************************************/	602	/*****************************************************************************/
311		603
312	typedef struct	604	typedef struct
313	{	605	{
314	struct ev_signal *head;	606	WL head;
315	sig_atomic_t gotsig;	607	sig_atomic_t volatile gotsig;
316	} ANSIG;	608	} ANSIG;
317		609
318	static ANSIG *signals;	610	static ANSIG *signals;
319	static int signalmax;	611	static int signalmax;
320		612
321	static int sigpipe [2];	613	static int sigpipe [2];
322	static sig_atomic_t gotsig;	614	static sig_atomic_t volatile gotsig;
323	static struct ev_io sigev;	615	static struct ev_io sigev;
324		616
325	static void	617	static void
326	signals_init (ANSIG *base, int count)	618	signals_init (ANSIG *base, int count)
327	{	619	{
328	while (count--)	620	while (count--)
329	{	621	{
330	base->head = 0;	622	base->head = 0;
331	base->gotsig = 0;	623	base->gotsig = 0;
		624
332	++base;	625	++base;
333	}	626	}
334	}	627	}
335		628
336	static void	629	static void
337	sighandler (int signum)	630	sighandler (int signum)
338	{	631	{
		632	#if _WIN32
		633	signal (signum, sighandler);
		634	#endif
		635
339	signals [signum - 1].gotsig = 1;	636	signals [signum - 1].gotsig = 1;
340		637
341	if (!gotsig)	638	if (!gotsig)
342	{	639	{
		640	int old_errno = errno;
343	gotsig = 1;	641	gotsig = 1;
344	write (sigpipe [1], &gotsig, 1);	642	write (sigpipe [1], &signum, 1);
		643	errno = old_errno;
345	}	644	}
346	}	645	}
347		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
348	static void	667	static void
349	sigcb (struct ev_io *iow, int revents)	668	sigcb (EV_P_ struct ev_io *iow, int revents)
350	{	669	{
351	struct ev_signal *w;
352	int sig;	670	int signum;
353		671
		672	read (sigpipe [0], &revents, 1);
354	gotsig = 0;	673	gotsig = 0;
355	read (sigpipe [0], &revents, 1);
356		674
357	for (sig = signalmax; sig--; )	675	for (signum = signalmax; signum--; )
358	if (signals [sig].gotsig)	676	if (signals [signum].gotsig)
359	{	677	ev_feed_signal_event (EV_A_ signum + 1);
360	signals [sig].gotsig = 0;
361
362	for (w = signals [sig].head; w; w = w->next)
363	event ((W)w, EV_SIGNAL);
364	}
365	}	678	}
366		679
367	static void	680	static void
368	siginit (void)	681	fd_intern (int fd)
369	{	682	{
		683	#ifdef _WIN32
		684	int arg = 1;
		685	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		686	#else
370	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	687	fcntl (fd, F_SETFD, FD_CLOEXEC);
371	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
372
373	/* rather than sort out wether we really need nb, set it */
374	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	688	fcntl (fd, F_SETFL, O_NONBLOCK);
375	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]);
376		697
377	ev_io_set (&sigev, sigpipe [0], EV_READ);	698	ev_io_set (&sigev, sigpipe [0], EV_READ);
378	ev_io_start (&sigev);	699	ev_io_start (EV_A_ &sigev);
		700	ev_unref (EV_A); /* child watcher should not keep loop alive */
379	}	701	}
380		702
381	/*****************************************************************************/	703	/*****************************************************************************/
382		704
383	static struct ev_idle **idles;
384	static int idlemax, idlecnt;
385
386	static struct ev_prepare **prepares;
387	static int preparemax, preparecnt;
388
389	static struct ev_check **checks;
390	static int checkmax, checkcnt;
391
392	/*****************************************************************************/
393
394	static struct ev_child *childs [PID_HASHSIZE];	705	static struct ev_child *childs [PID_HASHSIZE];
		706
		707	#ifndef _WIN32
		708
395	static struct ev_signal childev;	709	static struct ev_signal childev;
396		710
397	#ifndef WCONTINUED	711	#ifndef WCONTINUED
398	# define WCONTINUED 0	712	# define WCONTINUED 0
399	#endif	713	#endif
400		714
401	static void	715	static void
402	childcb (struct ev_signal *sw, int revents)	716	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
403	{	717	{
404	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	{
405	int pid, status;	733	int pid, status;
406		734
407	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	735	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
408	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	736	{
409	if (w->pid == pid \|\| w->pid == -1)	737	/* make sure we are called again until all childs have been reaped */
410	{	738	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
411	w->status = status;	739
412	event ((W)w, EV_CHILD);	740	child_reap (EV_A_ sw, pid, pid, status);
413	}	741	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		742	}
414	}	743	}
		744
		745	#endif
415		746
416	/*****************************************************************************/	747	/*****************************************************************************/
417		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
418	#if EV_USE_EPOLL	755	#if EV_USE_EPOLL
419	# include "ev_epoll.c"	756	# include "ev_epoll.c"
420	#endif	757	#endif
		758	#if EV_USE_POLL
		759	# include "ev_poll.c"
		760	#endif
421	#if EV_USE_SELECT	761	#if EV_USE_SELECT
422	# include "ev_select.c"	762	# include "ev_select.c"
423	#endif	763	#endif
424		764
425	int	765	int
…		…
432	ev_version_minor (void)	772	ev_version_minor (void)
433	{	773	{
434	return EV_VERSION_MINOR;	774	return EV_VERSION_MINOR;
435	}	775	}
436		776
437	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)
438	{	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	{
439	if (!ev_method)	798	if (!method)
440	{	799	{
441	#if EV_USE_MONOTONIC	800	#if EV_USE_MONOTONIC
442	{	801	{
443	struct timespec ts;	802	struct timespec ts;
444	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	803	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
445	have_monotonic = 1;	804	have_monotonic = 1;
446	}	805	}
447	#endif	806	#endif
448		807
449	ev_now = ev_time ();	808	ev_rt_now = ev_time ();
450	now = get_clock ();	809	mn_now = get_clock ();
		810	now_floor = mn_now;
451	diff = ev_now - now;	811	rtmn_diff = ev_rt_now - mn_now;
452		812
453	if (pipe (sigpipe))	813	if (!(flags & EVFLAG_NOENV)
454	return 0;	814	&& !enable_secure ()
		815	&& getenv ("LIBEV_FLAGS"))
		816	flags = atoi (getenv ("LIBEV_FLAGS"));
455		817
456	ev_method = EVMETHOD_NONE;	818	if (!(flags & EVMETHOD_ALL))
		819	{
		820	flags \|= EVMETHOD_ALL;
		821	#if EV_USE_KQUEUE && !defined (__NetBSD__)
		822	/* kqueue is borked on everything but netbsd apparently */
		823	/* it usually doesn't work correctly on anything but sockets and pipes */
		824	flags &= ~EVMETHOD_KQUEUE;
		825	#endif
		826	}
		827
		828	method = 0;
		829	#if EV_USE_PORT
		830	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
		831	#endif
		832	#if EV_USE_KQUEUE
		833	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
		834	#endif
457	#if EV_USE_EPOLL	835	#if EV_USE_EPOLL
458	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	836	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
		837	#endif
		838	#if EV_USE_POLL
		839	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
459	#endif	840	#endif
460	#if EV_USE_SELECT	841	#if EV_USE_SELECT
461	if (ev_method == EVMETHOD_NONE) select_init (flags);	842	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
462	#endif	843	#endif
463		844
		845	ev_init (&sigev, sigcb);
		846	ev_set_priority (&sigev, EV_MAXPRI);
		847	}
		848	}
		849
		850	static void
		851	loop_destroy (EV_P)
		852	{
		853	int i;
		854
		855	#if EV_USE_PORT
		856	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
		857	#endif
		858	#if EV_USE_KQUEUE
		859	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		860	#endif
		861	#if EV_USE_EPOLL
		862	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		863	#endif
		864	#if EV_USE_POLL
		865	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		866	#endif
		867	#if EV_USE_SELECT
		868	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		869	#endif
		870
		871	for (i = NUMPRI; i--; )
		872	array_free (pending, [i]);
		873
		874	/* have to use the microsoft-never-gets-it-right macro */
		875	array_free (fdchange, EMPTY0);
		876	array_free (timer, EMPTY0);
		877	#if EV_PERIODICS
		878	array_free (periodic, EMPTY0);
		879	#endif
		880	array_free (idle, EMPTY0);
		881	array_free (prepare, EMPTY0);
		882	array_free (check, EMPTY0);
		883
		884	method = 0;
		885	}
		886
		887	static void
		888	loop_fork (EV_P)
		889	{
		890	#if EV_USE_PORT
		891	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		892	#endif
		893	#if EV_USE_KQUEUE
		894	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		895	#endif
		896	#if EV_USE_EPOLL
		897	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		898	#endif
		899
		900	if (ev_is_active (&sigev))
		901	{
		902	/* default loop */
		903
		904	ev_ref (EV_A);
		905	ev_io_stop (EV_A_ &sigev);
		906	close (sigpipe [0]);
		907	close (sigpipe [1]);
		908
		909	while (pipe (sigpipe))
		910	syserr ("(libev) error creating pipe");
		911
		912	siginit (EV_A);
		913	}
		914
		915	postfork = 0;
		916	}
		917
		918	#if EV_MULTIPLICITY
		919	struct ev_loop *
		920	ev_loop_new (unsigned int flags)
		921	{
		922	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		923
		924	memset (loop, 0, sizeof (struct ev_loop));
		925
		926	loop_init (EV_A_ flags);
		927
		928	if (ev_method (EV_A))
		929	return loop;
		930
		931	return 0;
		932	}
		933
		934	void
		935	ev_loop_destroy (EV_P)
		936	{
		937	loop_destroy (EV_A);
		938	ev_free (loop);
		939	}
		940
		941	void
		942	ev_loop_fork (EV_P)
		943	{
		944	postfork = 1;
		945	}
		946
		947	#endif
		948
		949	#if EV_MULTIPLICITY
		950	struct ev_loop *
		951	ev_default_loop_init (unsigned int flags)
		952	#else
		953	int
		954	ev_default_loop (unsigned int flags)
		955	#endif
		956	{
		957	if (sigpipe [0] == sigpipe [1])
		958	if (pipe (sigpipe))
		959	return 0;
		960
		961	if (!ev_default_loop_ptr)
		962	{
		963	#if EV_MULTIPLICITY
		964	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		965	#else
		966	ev_default_loop_ptr = 1;
		967	#endif
		968
		969	loop_init (EV_A_ flags);
		970
464	if (ev_method)	971	if (ev_method (EV_A))
465	{	972	{
466	ev_watcher_init (&sigev, sigcb);
467	siginit ();	973	siginit (EV_A);
468		974
		975	#ifndef _WIN32
469	ev_signal_init (&childev, childcb, SIGCHLD);	976	ev_signal_init (&childev, childcb, SIGCHLD);
		977	ev_set_priority (&childev, EV_MAXPRI);
470	ev_signal_start (&childev);	978	ev_signal_start (EV_A_ &childev);
		979	ev_unref (EV_A); /* child watcher should not keep loop alive */
		980	#endif
471	}	981	}
		982	else
		983	ev_default_loop_ptr = 0;
472	}	984	}
473		985
474	return ev_method;	986	return ev_default_loop_ptr;
		987	}
		988
		989	void
		990	ev_default_destroy (void)
		991	{
		992	#if EV_MULTIPLICITY
		993	struct ev_loop *loop = ev_default_loop_ptr;
		994	#endif
		995
		996	#ifndef _WIN32
		997	ev_ref (EV_A); /* child watcher */
		998	ev_signal_stop (EV_A_ &childev);
		999	#endif
		1000
		1001	ev_ref (EV_A); /* signal watcher */
		1002	ev_io_stop (EV_A_ &sigev);
		1003
		1004	close (sigpipe [0]); sigpipe [0] = 0;
		1005	close (sigpipe [1]); sigpipe [1] = 0;
		1006
		1007	loop_destroy (EV_A);
		1008	}
		1009
		1010	void
		1011	ev_default_fork (void)
		1012	{
		1013	#if EV_MULTIPLICITY
		1014	struct ev_loop *loop = ev_default_loop_ptr;
		1015	#endif
		1016
		1017	if (method)
		1018	postfork = 1;
475	}	1019	}
476		1020
477	/*****************************************************************************/	1021	/*****************************************************************************/
478		1022
479	void
480	ev_prefork (void)
481	{
482	/* nop */
483	}
484
485	void
486	ev_postfork_parent (void)
487	{
488	/* nop */
489	}
490
491	void
492	ev_postfork_child (void)
493	{
494	#if EV_USE_EPOLL
495	if (ev_method == EVMETHOD_EPOLL)
496	epoll_postfork_child ();
497	#endif
498
499	ev_io_stop (&sigev);
500	close (sigpipe [0]);
501	close (sigpipe [1]);
502	pipe (sigpipe);
503	siginit ();
504	}
505
506	/*****************************************************************************/
507
508	static void	1023	static int
		1024	any_pending (EV_P)
		1025	{
		1026	int pri;
		1027
		1028	for (pri = NUMPRI; pri--; )
		1029	if (pendingcnt [pri])
		1030	return 1;
		1031
		1032	return 0;
		1033	}
		1034
		1035	inline void
509	call_pending (void)	1036	call_pending (EV_P)
510	{	1037	{
		1038	int pri;
		1039
		1040	for (pri = NUMPRI; pri--; )
511	while (pendingcnt)	1041	while (pendingcnt [pri])
512	{	1042	{
513	ANPENDING *p = pendings + --pendingcnt;	1043	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
514		1044
515	if (p->w)	1045	if (expect_true (p->w))
516	{	1046	{
517	p->w->pending = 0;	1047	p->w->pending = 0;
518	p->w->cb (p->w, p->events);	1048	EV_CB_INVOKE (p->w, p->events);
519	}	1049	}
520	}	1050	}
521	}	1051	}
522		1052
523	static void	1053	inline void
524	timers_reify (void)	1054	timers_reify (EV_P)
525	{	1055	{
526	while (timercnt && timers [0]->at <= now)	1056	while (timercnt && ((WT)timers [0])->at <= mn_now)
527	{	1057	{
528	struct ev_timer *w = timers [0];	1058	struct ev_timer *w = timers [0];
		1059
		1060	assert (("inactive timer on timer heap detected", ev_is_active (w)));
529		1061
530	/* first reschedule or stop timer */	1062	/* first reschedule or stop timer */
531	if (w->repeat)	1063	if (w->repeat)
532	{	1064	{
		1065	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1066
533	w->at = now + w->repeat;	1067	((WT)w)->at += w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));	1068	if (((WT)w)->at < mn_now)
		1069	((WT)w)->at = mn_now;
		1070
535	downheap ((WT *)timers, timercnt, 0);	1071	downheap ((WT *)timers, timercnt, 0);
536	}	1072	}
537	else	1073	else
538	ev_timer_stop (w); /* nonrepeating: stop timer */	1074	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539		1075
540	event ((W)w, EV_TIMEOUT);	1076	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
541	}	1077	}
542	}	1078	}
543		1079
544	static void	1080	#if EV_PERIODICS
		1081	inline void
545	periodics_reify (void)	1082	periodics_reify (EV_P)
546	{	1083	{
547	while (periodiccnt && periodics [0]->at <= ev_now)	1084	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
548	{	1085	{
549	struct ev_periodic *w = periodics [0];	1086	struct ev_periodic *w = periodics [0];
550		1087
		1088	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1089
551	/* first reschedule or stop timer */	1090	/* first reschedule or stop timer */
552	if (w->interval)	1091	if (w->reschedule_cb)
553	{	1092	{
		1093	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1094	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1095	downheap ((WT *)periodics, periodiccnt, 0);
		1096	}
		1097	else if (w->interval)
		1098	{
554	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1099	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
555	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1100	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
556	downheap ((WT *)periodics, periodiccnt, 0);	1101	downheap ((WT *)periodics, periodiccnt, 0);
557	}	1102	}
558	else	1103	else
559	ev_periodic_stop (w); /* nonrepeating: stop timer */	1104	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
560		1105
561	event ((W)w, EV_TIMEOUT);	1106	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
562	}	1107	}
563	}	1108	}
564		1109
565	static void	1110	static void
566	periodics_reschedule (ev_tstamp diff)	1111	periodics_reschedule (EV_P)
567	{	1112	{
568	int i;	1113	int i;
569		1114
570	/* adjust periodics after time jump */	1115	/* adjust periodics after time jump */
571	for (i = 0; i < periodiccnt; ++i)	1116	for (i = 0; i < periodiccnt; ++i)
572	{	1117	{
573	struct ev_periodic *w = periodics [i];	1118	struct ev_periodic *w = periodics [i];
574		1119
		1120	if (w->reschedule_cb)
		1121	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
575	if (w->interval)	1122	else if (w->interval)
		1123	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1124	}
		1125
		1126	/* now rebuild the heap */
		1127	for (i = periodiccnt >> 1; i--; )
		1128	downheap ((WT *)periodics, periodiccnt, i);
		1129	}
		1130	#endif
		1131
		1132	inline int
		1133	time_update_monotonic (EV_P)
		1134	{
		1135	mn_now = get_clock ();
		1136
		1137	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1138	{
		1139	ev_rt_now = rtmn_diff + mn_now;
		1140	return 0;
		1141	}
		1142	else
		1143	{
		1144	now_floor = mn_now;
		1145	ev_rt_now = ev_time ();
		1146	return 1;
		1147	}
		1148	}
		1149
		1150	inline void
		1151	time_update (EV_P)
		1152	{
		1153	int i;
		1154
		1155	#if EV_USE_MONOTONIC
		1156	if (expect_true (have_monotonic))
		1157	{
		1158	if (time_update_monotonic (EV_A))
576	{	1159	{
577	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1160	ev_tstamp odiff = rtmn_diff;
578		1161
579	if (fabs (diff) >= 1e-4)	1162	for (i = 4; --i; ) /* loop a few times, before making important decisions */
580	{	1163	{
581	ev_periodic_stop (w);	1164	rtmn_diff = ev_rt_now - mn_now;
582	ev_periodic_start (w);
583		1165
584	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1166	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1167	return; /* all is well */
		1168
		1169	ev_rt_now = ev_time ();
		1170	mn_now = get_clock ();
		1171	now_floor = mn_now;
585	}	1172	}
		1173
		1174	# if EV_PERIODICS
		1175	periodics_reschedule (EV_A);
		1176	# endif
		1177	/* no timer adjustment, as the monotonic clock doesn't jump */
		1178	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
586	}	1179	}
587	}	1180	}
588	}	1181	else
589		1182	#endif
590	static void	1183	{
591	time_update (void)
592	{
593	int i;
594
595	ev_now = ev_time ();	1184	ev_rt_now = ev_time ();
596		1185
597	if (have_monotonic)	1186	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
598	{
599	ev_tstamp odiff = diff;
600
601	for (i = 4; --i; ) /* loop a few times, before making important decisions */
602	{	1187	{
603	now = get_clock ();	1188	#if EV_PERIODICS
604	diff = ev_now - now;
605
606	if (fabs (odiff - diff) < MIN_TIMEJUMP)
607	return; /* all is well */
608
609	ev_now = ev_time ();
610	}
611
612	periodics_reschedule (diff - odiff);
613	/* no timer adjustment, as the monotonic clock doesn't jump */
614	}
615	else
616	{
617	if (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
618	{
619	periodics_reschedule (ev_now - now);	1189	periodics_reschedule (EV_A);
		1190	#endif
620		1191
621	/* adjust timers. this is easy, as the offset is the same for all */	1192	/* adjust timers. this is easy, as the offset is the same for all */
622	for (i = 0; i < timercnt; ++i)	1193	for (i = 0; i < timercnt; ++i)
623	timers [i]->at += diff;	1194	((WT)timers [i])->at += ev_rt_now - mn_now;
624	}	1195	}
625		1196
626	now = ev_now;	1197	mn_now = ev_rt_now;
627	}	1198	}
628	}	1199	}
629		1200
630	int ev_loop_done;	1201	void
		1202	ev_ref (EV_P)
		1203	{
		1204	++activecnt;
		1205	}
631		1206
		1207	void
		1208	ev_unref (EV_P)
		1209	{
		1210	--activecnt;
		1211	}
		1212
		1213	static int loop_done;
		1214
		1215	void
632	void ev_loop (int flags)	1216	ev_loop (EV_P_ int flags)
633	{	1217	{
634	double block;	1218	double block;
635	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1219	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
636		1220
637	do	1221	while (activecnt)
638	{	1222	{
639	/* queue check watchers (and execute them) */	1223	/* queue check watchers (and execute them) */
640	if (preparecnt)	1224	if (expect_false (preparecnt))
641	{	1225	{
642	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1226	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
643	call_pending ();	1227	call_pending (EV_A);
644	}	1228	}
645		1229
		1230	/* we might have forked, so reify kernel state if necessary */
		1231	if (expect_false (postfork))
		1232	loop_fork (EV_A);
		1233
646	/* update fd-related kernel structures */	1234	/* update fd-related kernel structures */
647	fd_reify ();	1235	fd_reify (EV_A);
648		1236
649	/* calculate blocking time */	1237	/* calculate blocking time */
650		1238
651	/* we only need this for !monotonic clockor timers, but as we basically	1239	/* we only need this for !monotonic clock or timers, but as we basically
652	always have timers, we just calculate it always */	1240	always have timers, we just calculate it always */
		1241	#if EV_USE_MONOTONIC
		1242	if (expect_true (have_monotonic))
		1243	time_update_monotonic (EV_A);
		1244	else
		1245	#endif
		1246	{
653	ev_now = ev_time ();	1247	ev_rt_now = ev_time ();
		1248	mn_now = ev_rt_now;
		1249	}
654		1250
655	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1251	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
656	block = 0.;	1252	block = 0.;
657	else	1253	else
658	{	1254	{
659	block = MAX_BLOCKTIME;	1255	block = MAX_BLOCKTIME;
660		1256
661	if (timercnt)	1257	if (timercnt)
662	{	1258	{
663	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1259	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
664	if (block > to) block = to;	1260	if (block > to) block = to;
665	}	1261	}
666		1262
		1263	#if EV_PERIODICS
667	if (periodiccnt)	1264	if (periodiccnt)
668	{	1265	{
669	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1266	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
670	if (block > to) block = to;	1267	if (block > to) block = to;
671	}	1268	}
		1269	#endif
672		1270
673	if (block < 0.) block = 0.;	1271	if (expect_false (block < 0.)) block = 0.;
674	}	1272	}
675		1273
676	method_poll (block);	1274	method_poll (EV_A_ block);
677		1275
678	/* update ev_now, do magic */	1276	/* update ev_rt_now, do magic */
679	time_update ();	1277	time_update (EV_A);
680		1278
681	/* queue pending timers and reschedule them */	1279	/* queue pending timers and reschedule them */
682	timers_reify (); /* relative timers called last */	1280	timers_reify (EV_A); /* relative timers called last */
		1281	#if EV_PERIODICS
683	periodics_reify (); /* absolute timers called first */	1282	periodics_reify (EV_A); /* absolute timers called first */
		1283	#endif
684		1284
685	/* queue idle watchers unless io or timers are pending */	1285	/* queue idle watchers unless io or timers are pending */
686	if (!pendingcnt)	1286	if (idlecnt && !any_pending (EV_A))
687	queue_events ((W *)idles, idlecnt, EV_IDLE);	1287	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
688		1288
689	/* queue check watchers, to be executed first */	1289	/* queue check watchers, to be executed first */
690	if (checkcnt)	1290	if (expect_false (checkcnt))
691	queue_events ((W *)checks, checkcnt, EV_CHECK);	1291	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
692		1292
693	call_pending ();	1293	call_pending (EV_A);
694	}
695	while (!ev_loop_done);
696		1294
		1295	if (expect_false (loop_done))
		1296	break;
		1297	}
		1298
697	if (ev_loop_done != 2)	1299	if (loop_done != 2)
698	ev_loop_done = 0;	1300	loop_done = 0;
		1301	}
		1302
		1303	void
		1304	ev_unloop (EV_P_ int how)
		1305	{
		1306	loop_done = how;
699	}	1307	}
700		1308
701	/*****************************************************************************/	1309	/*****************************************************************************/
702		1310
703	static void	1311	inline void
704	wlist_add (WL *head, WL elem)	1312	wlist_add (WL *head, WL elem)
705	{	1313	{
706	elem->next = *head;	1314	elem->next = *head;
707	*head = elem;	1315	*head = elem;
708	}	1316	}
709		1317
710	static void	1318	inline void
711	wlist_del (WL *head, WL elem)	1319	wlist_del (WL *head, WL elem)
712	{	1320	{
713	while (*head)	1321	while (*head)
714	{	1322	{
715	if (*head == elem)	1323	if (*head == elem)
…		…
720		1328
721	head = &(*head)->next;	1329	head = &(*head)->next;
722	}	1330	}
723	}	1331	}
724		1332
725	static void	1333	inline void
726	ev_clear (W w)	1334	ev_clear_pending (EV_P_ W w)
727	{	1335	{
728	if (w->pending)	1336	if (w->pending)
729	{	1337	{
730	pendings [w->pending - 1].w = 0;	1338	pendings [ABSPRI (w)][w->pending - 1].w = 0;
731	w->pending = 0;	1339	w->pending = 0;
732	}	1340	}
733	}	1341	}
734		1342
735	static void	1343	inline void
736	ev_start (W w, int active)	1344	ev_start (EV_P_ W w, int active)
737	{	1345	{
		1346	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1347	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1348
738	w->active = active;	1349	w->active = active;
		1350	ev_ref (EV_A);
739	}	1351	}
740		1352
741	static void	1353	inline void
742	ev_stop (W w)	1354	ev_stop (EV_P_ W w)
743	{	1355	{
		1356	ev_unref (EV_A);
744	w->active = 0;	1357	w->active = 0;
745	}	1358	}
746		1359
747	/*****************************************************************************/	1360	/*****************************************************************************/
748		1361
749	void	1362	void
750	ev_io_start (struct ev_io *w)	1363	ev_io_start (EV_P_ struct ev_io *w)
751	{	1364	{
		1365	int fd = w->fd;
		1366
752	if (ev_is_active (w))	1367	if (expect_false (ev_is_active (w)))
753	return;	1368	return;
754		1369
755	int fd = w->fd;	1370	assert (("ev_io_start called with negative fd", fd >= 0));
756		1371
757	ev_start ((W)w, 1);	1372	ev_start (EV_A_ (W)w, 1);
758	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1373	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
759	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1374	wlist_add ((WL *)&anfds[fd].head, (WL)w);
760		1375
761	fd_change (fd);	1376	fd_change (EV_A_ fd);
762	}	1377	}
763		1378
764	void	1379	void
765	ev_io_stop (struct ev_io *w)	1380	ev_io_stop (EV_P_ struct ev_io *w)
766	{	1381	{
767	ev_clear ((W)w);	1382	ev_clear_pending (EV_A_ (W)w);
768	if (!ev_is_active (w))	1383	if (expect_false (!ev_is_active (w)))
769	return;	1384	return;
770		1385
		1386	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1387
771	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1388	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
772	ev_stop ((W)w);	1389	ev_stop (EV_A_ (W)w);
773		1390
774	fd_change (w->fd);	1391	fd_change (EV_A_ w->fd);
775	}	1392	}
776		1393
777	void	1394	void
778	ev_timer_start (struct ev_timer *w)	1395	ev_timer_start (EV_P_ struct ev_timer *w)
779	{	1396	{
780	if (ev_is_active (w))	1397	if (expect_false (ev_is_active (w)))
781	return;	1398	return;
782		1399
783	w->at += now;	1400	((WT)w)->at += mn_now;
784		1401
785	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1402	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
786		1403
787	ev_start ((W)w, ++timercnt);	1404	ev_start (EV_A_ (W)w, ++timercnt);
788	array_needsize (timers, timermax, timercnt, );	1405	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
789	timers [timercnt - 1] = w;	1406	timers [timercnt - 1] = w;
790	upheap ((WT *)timers, timercnt - 1);	1407	upheap ((WT *)timers, timercnt - 1);
791	}
792		1408
		1409	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1410	}
		1411
793	void	1412	void
794	ev_timer_stop (struct ev_timer *w)	1413	ev_timer_stop (EV_P_ struct ev_timer *w)
795	{	1414	{
796	ev_clear ((W)w);	1415	ev_clear_pending (EV_A_ (W)w);
797	if (!ev_is_active (w))	1416	if (expect_false (!ev_is_active (w)))
798	return;	1417	return;
799		1418
		1419	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1420
800	if (w->active < timercnt--)	1421	if (expect_true (((W)w)->active < timercnt--))
801	{	1422	{
802	timers [w->active - 1] = timers [timercnt];	1423	timers [((W)w)->active - 1] = timers [timercnt];
803	downheap ((WT *)timers, timercnt, w->active - 1);	1424	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
804	}	1425	}
805		1426
806	w->at = w->repeat;	1427	((WT)w)->at -= mn_now;
807		1428
808	ev_stop ((W)w);	1429	ev_stop (EV_A_ (W)w);
809	}	1430	}
810		1431
811	void	1432	void
812	ev_timer_again (struct ev_timer *w)	1433	ev_timer_again (EV_P_ struct ev_timer *w)
813	{	1434	{
814	if (ev_is_active (w))	1435	if (ev_is_active (w))
815	{	1436	{
816	if (w->repeat)	1437	if (w->repeat)
817	{	1438	{
818	w->at = now + w->repeat;	1439	((WT)w)->at = mn_now + w->repeat;
819	downheap ((WT *)timers, timercnt, w->active - 1);	1440	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
820	}	1441	}
821	else	1442	else
822	ev_timer_stop (w);	1443	ev_timer_stop (EV_A_ w);
823	}	1444	}
824	else if (w->repeat)	1445	else if (w->repeat)
		1446	{
		1447	w->at = w->repeat;
825	ev_timer_start (w);	1448	ev_timer_start (EV_A_ w);
		1449	}
826	}	1450	}
827		1451
		1452	#if EV_PERIODICS
828	void	1453	void
829	ev_periodic_start (struct ev_periodic *w)	1454	ev_periodic_start (EV_P_ struct ev_periodic *w)
830	{	1455	{
831	if (ev_is_active (w))	1456	if (expect_false (ev_is_active (w)))
832	return;	1457	return;
833		1458
834	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1459	if (w->reschedule_cb)
835		1460	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1461	else if (w->interval)
		1462	{
		1463	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
836	/* this formula differs from the one in periodic_reify because we do not always round up */	1464	/* this formula differs from the one in periodic_reify because we do not always round up */
837	if (w->interval)
838	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1465	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1466	}
839		1467
840	ev_start ((W)w, ++periodiccnt);	1468	ev_start (EV_A_ (W)w, ++periodiccnt);
841	array_needsize (periodics, periodicmax, periodiccnt, );	1469	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
842	periodics [periodiccnt - 1] = w;	1470	periodics [periodiccnt - 1] = w;
843	upheap ((WT *)periodics, periodiccnt - 1);	1471	upheap ((WT *)periodics, periodiccnt - 1);
844	}
845		1472
		1473	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1474	}
		1475
846	void	1476	void
847	ev_periodic_stop (struct ev_periodic *w)	1477	ev_periodic_stop (EV_P_ struct ev_periodic *w)
848	{	1478	{
849	ev_clear ((W)w);	1479	ev_clear_pending (EV_A_ (W)w);
850	if (!ev_is_active (w))	1480	if (expect_false (!ev_is_active (w)))
851	return;	1481	return;
852		1482
		1483	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1484
853	if (w->active < periodiccnt--)	1485	if (expect_true (((W)w)->active < periodiccnt--))
854	{	1486	{
855	periodics [w->active - 1] = periodics [periodiccnt];	1487	periodics [((W)w)->active - 1] = periodics [periodiccnt];
856	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1488	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
857	}	1489	}
858		1490
859	ev_stop ((W)w);	1491	ev_stop (EV_A_ (W)w);
860	}	1492	}
861		1493
862	void	1494	void
		1495	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1496	{
		1497	/* TODO: use adjustheap and recalculation */
		1498	ev_periodic_stop (EV_A_ w);
		1499	ev_periodic_start (EV_A_ w);
		1500	}
		1501	#endif
		1502
		1503	void
863	ev_signal_start (struct ev_signal *w)	1504	ev_idle_start (EV_P_ struct ev_idle *w)
864	{	1505	{
865	if (ev_is_active (w))	1506	if (expect_false (ev_is_active (w)))
866	return;	1507	return;
867		1508
		1509	ev_start (EV_A_ (W)w, ++idlecnt);
		1510	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1511	idles [idlecnt - 1] = w;
		1512	}
		1513
		1514	void
		1515	ev_idle_stop (EV_P_ struct ev_idle *w)
		1516	{
		1517	ev_clear_pending (EV_A_ (W)w);
		1518	if (expect_false (!ev_is_active (w)))
		1519	return;
		1520
		1521	idles [((W)w)->active - 1] = idles [--idlecnt];
		1522	ev_stop (EV_A_ (W)w);
		1523	}
		1524
		1525	void
		1526	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1527	{
		1528	if (expect_false (ev_is_active (w)))
		1529	return;
		1530
		1531	ev_start (EV_A_ (W)w, ++preparecnt);
		1532	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1533	prepares [preparecnt - 1] = w;
		1534	}
		1535
		1536	void
		1537	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1538	{
		1539	ev_clear_pending (EV_A_ (W)w);
		1540	if (expect_false (!ev_is_active (w)))
		1541	return;
		1542
		1543	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1544	ev_stop (EV_A_ (W)w);
		1545	}
		1546
		1547	void
		1548	ev_check_start (EV_P_ struct ev_check *w)
		1549	{
		1550	if (expect_false (ev_is_active (w)))
		1551	return;
		1552
		1553	ev_start (EV_A_ (W)w, ++checkcnt);
		1554	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1555	checks [checkcnt - 1] = w;
		1556	}
		1557
		1558	void
		1559	ev_check_stop (EV_P_ struct ev_check *w)
		1560	{
		1561	ev_clear_pending (EV_A_ (W)w);
		1562	if (expect_false (!ev_is_active (w)))
		1563	return;
		1564
		1565	checks [((W)w)->active - 1] = checks [--checkcnt];
		1566	ev_stop (EV_A_ (W)w);
		1567	}
		1568
		1569	#ifndef SA_RESTART
		1570	# define SA_RESTART 0
		1571	#endif
		1572
		1573	void
		1574	ev_signal_start (EV_P_ struct ev_signal *w)
		1575	{
		1576	#if EV_MULTIPLICITY
		1577	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1578	#endif
		1579	if (expect_false (ev_is_active (w)))
		1580	return;
		1581
		1582	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1583
868	ev_start ((W)w, 1);	1584	ev_start (EV_A_ (W)w, 1);
869	array_needsize (signals, signalmax, w->signum, signals_init);	1585	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
870	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1586	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
871		1587
872	if (!w->next)	1588	if (!((WL)w)->next)
873	{	1589	{
		1590	#if _WIN32
		1591	signal (w->signum, sighandler);
		1592	#else
874	struct sigaction sa;	1593	struct sigaction sa;
875	sa.sa_handler = sighandler;	1594	sa.sa_handler = sighandler;
876	sigfillset (&sa.sa_mask);	1595	sigfillset (&sa.sa_mask);
877	sa.sa_flags = 0;	1596	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
878	sigaction (w->signum, &sa, 0);	1597	sigaction (w->signum, &sa, 0);
		1598	#endif
879	}	1599	}
880	}	1600	}
881		1601
882	void	1602	void
883	ev_signal_stop (struct ev_signal *w)	1603	ev_signal_stop (EV_P_ struct ev_signal *w)
884	{	1604	{
885	ev_clear ((W)w);	1605	ev_clear_pending (EV_A_ (W)w);
886	if (!ev_is_active (w))	1606	if (expect_false (!ev_is_active (w)))
887	return;	1607	return;
888		1608
889	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1609	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
890	ev_stop ((W)w);	1610	ev_stop (EV_A_ (W)w);
891		1611
892	if (!signals [w->signum - 1].head)	1612	if (!signals [w->signum - 1].head)
893	signal (w->signum, SIG_DFL);	1613	signal (w->signum, SIG_DFL);
894	}	1614	}
895		1615
896	void	1616	void
897	ev_idle_start (struct ev_idle *w)	1617	ev_child_start (EV_P_ struct ev_child *w)
898	{	1618	{
		1619	#if EV_MULTIPLICITY
		1620	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1621	#endif
899	if (ev_is_active (w))	1622	if (expect_false (ev_is_active (w)))
900	return;	1623	return;
901		1624
902	ev_start ((W)w, ++idlecnt);	1625	ev_start (EV_A_ (W)w, 1);
903	array_needsize (idles, idlemax, idlecnt, );	1626	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
904	idles [idlecnt - 1] = w;
905	}	1627	}
906		1628
907	void	1629	void
908	ev_idle_stop (struct ev_idle *w)	1630	ev_child_stop (EV_P_ struct ev_child *w)
909	{	1631	{
910	ev_clear ((W)w);	1632	ev_clear_pending (EV_A_ (W)w);
911	if (ev_is_active (w))	1633	if (expect_false (!ev_is_active (w)))
912	return;	1634	return;
913		1635
914	idles [w->active - 1] = idles [--idlecnt];
915	ev_stop ((W)w);
916	}
917
918	void
919	ev_prepare_start (struct ev_prepare *w)
920	{
921	if (ev_is_active (w))
922	return;
923
924	ev_start ((W)w, ++preparecnt);
925	array_needsize (prepares, preparemax, preparecnt, );
926	prepares [preparecnt - 1] = w;
927	}
928
929	void
930	ev_prepare_stop (struct ev_prepare *w)
931	{
932	ev_clear ((W)w);
933	if (ev_is_active (w))
934	return;
935
936	prepares [w->active - 1] = prepares [--preparecnt];
937	ev_stop ((W)w);
938	}
939
940	void
941	ev_check_start (struct ev_check *w)
942	{
943	if (ev_is_active (w))
944	return;
945
946	ev_start ((W)w, ++checkcnt);
947	array_needsize (checks, checkmax, checkcnt, );
948	checks [checkcnt - 1] = w;
949	}
950
951	void
952	ev_check_stop (struct ev_check *w)
953	{
954	ev_clear ((W)w);
955	if (ev_is_active (w))
956	return;
957
958	checks [w->active - 1] = checks [--checkcnt];
959	ev_stop ((W)w);
960	}
961
962	void
963	ev_child_start (struct ev_child *w)
964	{
965	if (ev_is_active (w))
966	return;
967
968	ev_start ((W)w, 1);
969	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
970	}
971
972	void
973	ev_child_stop (struct ev_child *w)
974	{
975	ev_clear ((W)w);
976	if (ev_is_active (w))
977	return;
978
979	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1636	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
980	ev_stop ((W)w);	1637	ev_stop (EV_A_ (W)w);
981	}	1638	}
982		1639
983	/*****************************************************************************/	1640	/*****************************************************************************/
984		1641
985	struct ev_once	1642	struct ev_once
…		…
989	void (cb)(int revents, void arg);	1646	void (cb)(int revents, void arg);
990	void *arg;	1647	void *arg;
991	};	1648	};
992		1649
993	static void	1650	static void
994	once_cb (struct ev_once *once, int revents)	1651	once_cb (EV_P_ struct ev_once *once, int revents)
995	{	1652	{
996	void (cb)(int revents, void arg) = once->cb;	1653	void (cb)(int revents, void arg) = once->cb;
997	void *arg = once->arg;	1654	void *arg = once->arg;
998		1655
999	ev_io_stop (&once->io);	1656	ev_io_stop (EV_A_ &once->io);
1000	ev_timer_stop (&once->to);	1657	ev_timer_stop (EV_A_ &once->to);
1001	free (once);	1658	ev_free (once);
1002		1659
1003	cb (revents, arg);	1660	cb (revents, arg);
1004	}	1661	}
1005		1662
1006	static void	1663	static void
1007	once_cb_io (struct ev_io *w, int revents)	1664	once_cb_io (EV_P_ struct ev_io *w, int revents)
1008	{	1665	{
1009	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1666	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1010	}	1667	}
1011		1668
1012	static void	1669	static void
1013	once_cb_to (struct ev_timer *w, int revents)	1670	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1014	{	1671	{
1015	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1672	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1016	}	1673	}
1017		1674
1018	void	1675	void
1019	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1676	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1020	{	1677	{
1021	struct ev_once *once = malloc (sizeof (struct ev_once));	1678	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1022		1679
1023	if (!once)	1680	if (expect_false (!once))
		1681	{
1024	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1682	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1025	else	1683	return;
1026	{	1684	}
		1685
1027	once->cb = cb;	1686	once->cb = cb;
1028	once->arg = arg;	1687	once->arg = arg;
1029		1688
1030	ev_watcher_init (&once->io, once_cb_io);	1689	ev_init (&once->io, once_cb_io);
1031	if (fd >= 0)	1690	if (fd >= 0)
1032	{	1691	{
1033	ev_io_set (&once->io, fd, events);	1692	ev_io_set (&once->io, fd, events);
1034	ev_io_start (&once->io);	1693	ev_io_start (EV_A_ &once->io);
1035	}	1694	}
1036		1695
1037	ev_watcher_init (&once->to, once_cb_to);	1696	ev_init (&once->to, once_cb_to);
1038	if (timeout >= 0.)	1697	if (timeout >= 0.)
1039	{	1698	{
1040	ev_timer_set (&once->to, timeout, 0.);	1699	ev_timer_set (&once->to, timeout, 0.);
1041	ev_timer_start (&once->to);	1700	ev_timer_start (EV_A_ &once->to);
1042	}
1043	}
1044	}
1045
1046	/*****************************************************************************/
1047
1048	#if 0
1049
1050	struct ev_io wio;
1051
1052	static void
1053	sin_cb (struct ev_io *w, int revents)
1054	{
1055	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1056	}
1057
1058	static void
1059	ocb (struct ev_timer *w, int revents)
1060	{
1061	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1062	ev_timer_stop (w);
1063	ev_timer_start (w);
1064	}
1065
1066	static void
1067	scb (struct ev_signal *w, int revents)
1068	{
1069	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1070	ev_io_stop (&wio);
1071	ev_io_start (&wio);
1072	}
1073
1074	static void
1075	gcb (struct ev_signal *w, int revents)
1076	{
1077	fprintf (stderr, "generic %x\n", revents);
1078
1079	}
1080
1081	int main (void)
1082	{
1083	ev_init (0);
1084
1085	ev_io_init (&wio, sin_cb, 0, EV_READ);
1086	ev_io_start (&wio);
1087
1088	struct ev_timer t[10000];
1089
1090	#if 0
1091	int i;
1092	for (i = 0; i < 10000; ++i)
1093	{	1701	}
1094	struct ev_timer *w = t + i;
1095	ev_watcher_init (w, ocb, i);
1096	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1097	ev_timer_start (w);
1098	if (drand48 () < 0.5)
1099	ev_timer_stop (w);
1100	}
1101	#endif
1102
1103	struct ev_timer t1;
1104	ev_timer_init (&t1, ocb, 5, 10);
1105	ev_timer_start (&t1);
1106
1107	struct ev_signal sig;
1108	ev_signal_init (&sig, scb, SIGQUIT);
1109	ev_signal_start (&sig);
1110
1111	struct ev_check cw;
1112	ev_check_init (&cw, gcb);
1113	ev_check_start (&cw);
1114
1115	struct ev_idle iw;
1116	ev_idle_init (&iw, gcb);
1117	ev_idle_start (&iw);
1118
1119	ev_loop (0);
1120
1121	return 0;
1122	}	1702	}
1123		1703
		1704	#ifdef __cplusplus
		1705	}
1124	#endif	1706	#endif
1125		1707
1126
1127
1128

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.30 by root, Thu Nov 1 08:28:33 2007 UTC vs. Revision 1.128 by root, Thu Nov 22 12:28:27 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.30 by root, Thu Nov 1 08:28:33 2007 UTC vs.
Revision 1.128 by root, Thu Nov 22 12:28:27 2007 UTC