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Comparing libev/ev.c (file contents):
Revision 1.27 by root, Wed Oct 31 22:16:36 2007 UTC vs.
Revision 1.165 by root, Fri Dec 7 18:09:38 2007 UTC

1	/*	1	/*
		2	* libev event processing core, watcher management
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
6	* modification, are permitted provided that the following conditions are	8	* modification, are permitted provided that the following conditions are
…		…
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	30	*/
29		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
		37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
		40	# include "config.h"
		41	# endif
		42
		43	# if HAVE_CLOCK_GETTIME
		44	# ifndef EV_USE_MONOTONIC
		45	# define EV_USE_MONOTONIC 1
		46	# endif
		47	# ifndef EV_USE_REALTIME
		48	# define EV_USE_REALTIME 1
		49	# endif
		50	# else
		51	# ifndef EV_USE_MONOTONIC
		52	# define EV_USE_MONOTONIC 0
		53	# endif
		54	# ifndef EV_USE_REALTIME
		55	# define EV_USE_REALTIME 0
		56	# endif
		57	# endif
		58
		59	# ifndef EV_USE_SELECT
		60	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		61	# define EV_USE_SELECT 1
		62	# else
		63	# define EV_USE_SELECT 0
		64	# endif
		65	# endif
		66
		67	# ifndef EV_USE_POLL
		68	# if HAVE_POLL && HAVE_POLL_H
		69	# define EV_USE_POLL 1
		70	# else
		71	# define EV_USE_POLL 0
		72	# endif
		73	# endif
		74
		75	# ifndef EV_USE_EPOLL
		76	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		77	# define EV_USE_EPOLL 1
		78	# else
		79	# define EV_USE_EPOLL 0
		80	# endif
		81	# endif
		82
		83	# ifndef EV_USE_KQUEUE
		84	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		85	# define EV_USE_KQUEUE 1
		86	# else
		87	# define EV_USE_KQUEUE 0
		88	# endif
		89	# endif
		90
		91	# ifndef EV_USE_PORT
		92	# if HAVE_PORT_H && HAVE_PORT_CREATE
		93	# define EV_USE_PORT 1
		94	# else
		95	# define EV_USE_PORT 0
		96	# endif
		97	# endif
		98
		99	# ifndef EV_USE_INOTIFY
		100	# if HAVE_INOTIFY_INIT && HAVE_SYS_INOTIFY_H
		101	# define EV_USE_INOTIFY 1
		102	# else
		103	# define EV_USE_INOTIFY 0
		104	# endif
		105	# endif
		106
		107	#endif
		108
30	#include <math.h>	109	#include <math.h>
31	#include <stdlib.h>	110	#include <stdlib.h>
32	#include <unistd.h>
33	#include <fcntl.h>	111	#include <fcntl.h>
34	#include <signal.h>
35	#include <stddef.h>	112	#include <stddef.h>
36		113
37	#include <stdio.h>	114	#include <stdio.h>
38		115
39	#include <assert.h>	116	#include <assert.h>
40	#include <errno.h>	117	#include <errno.h>
41	#include <sys/types.h>	118	#include <sys/types.h>
42	#include <sys/wait.h>
43	#include <sys/time.h>
44	#include <time.h>	119	#include <time.h>
45		120
46	#ifndef HAVE_MONOTONIC	121	#include <signal.h>
47	# ifdef CLOCK_MONOTONIC	122
48	# define HAVE_MONOTONIC 1	123	#ifdef EV_H
		124	# include EV_H
		125	#else
		126	# include "ev.h"
		127	#endif
		128
		129	#ifndef _WIN32
		130	# include <sys/time.h>
		131	# include <sys/wait.h>
		132	# include <unistd.h>
		133	#else
		134	# define WIN32_LEAN_AND_MEAN
		135	# include <windows.h>
		136	# ifndef EV_SELECT_IS_WINSOCKET
		137	# define EV_SELECT_IS_WINSOCKET 1
49	# endif	138	# endif
50	#endif	139	#endif
51		140
		141	/**/
		142
		143	#ifndef EV_USE_MONOTONIC
		144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
52	#ifndef HAVE_SELECT	151	#ifndef EV_USE_SELECT
53	# define HAVE_SELECT 1	152	# define EV_USE_SELECT 1
		153	#endif
		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
54	#endif	160	# endif
		161	#endif
55		162
56	#ifndef HAVE_EPOLL	163	#ifndef EV_USE_EPOLL
57	# define HAVE_EPOLL 0	164	# define EV_USE_EPOLL 0
		165	#endif
		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
		171	#ifndef EV_USE_PORT
		172	# define EV_USE_PORT 0
		173	#endif
		174
		175	#ifndef EV_USE_INOTIFY
		176	# define EV_USE_INOTIFY 0
		177	#endif
		178
		179	#ifndef EV_PID_HASHSIZE
		180	# if EV_MINIMAL
		181	# define EV_PID_HASHSIZE 1
		182	# else
		183	# define EV_PID_HASHSIZE 16
58	#endif	184	# endif
		185	#endif
59		186
60	#ifndef HAVE_REALTIME	187	#ifndef EV_INOTIFY_HASHSIZE
61	# define HAVE_REALTIME 1 /* posix requirement, but might be slower */	188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
62	#endif	192	# endif
		193	#endif
		194
		195	/**/
		196
		197	#ifndef CLOCK_MONOTONIC
		198	# undef EV_USE_MONOTONIC
		199	# define EV_USE_MONOTONIC 0
		200	#endif
		201
		202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
		204	# define EV_USE_REALTIME 0
		205	#endif
		206
		207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
		209	#endif
		210
		211	#if !EV_STAT_ENABLE
		212	# define EV_USE_INOTIFY 0
		213	#endif
		214
		215	#if EV_USE_INOTIFY
		216	# include <sys/inotify.h>
		217	#endif
		218
		219	/**/
63		220
64	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	221	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
65	#define MAX_BLOCKTIME 60.	222	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
66	#define PID_HASHSIZE 16 /* size of pid hahs table, must be power of two */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
67		224
68	#include "ev.h"	225	#if __GNUC__ >= 3
		226	# define expect(expr,value) __builtin_expect ((expr),(value))
		227	# define inline_size static inline /* inline for codesize */
		228	# if EV_MINIMAL
		229	# define noinline __attribute__ ((noinline))
		230	# define inline_speed static noinline
		231	# else
		232	# define noinline
		233	# define inline_speed static inline
		234	# endif
		235	#else
		236	# define expect(expr,value) (expr)
		237	# define inline_speed static
		238	# define inline_size static
		239	# define noinline
		240	#endif
69		241
		242	#define expect_false(expr) expect ((expr) != 0, 0)
		243	#define expect_true(expr) expect ((expr) != 0, 1)
		244
		245	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		246	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		247
		248	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
70	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
71	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
72	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
73		254
74	static ev_tstamp now, diff; /* monotonic clock */	255	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		256
		257	#ifdef _WIN32
		258	# include "ev_win32.c"
		259	#endif
		260
		261	/*****************************************************************************/
		262
		263	static void (*syserr_cb)(const char *msg);
		264
		265	void
		266	ev_set_syserr_cb (void (*cb)(const char *msg))
		267	{
		268	syserr_cb = cb;
		269	}
		270
		271	static void noinline
		272	syserr (const char *msg)
		273	{
		274	if (!msg)
		275	msg = "(libev) system error";
		276
		277	if (syserr_cb)
		278	syserr_cb (msg);
		279	else
		280	{
		281	perror (msg);
		282	abort ();
		283	}
		284	}
		285
		286	static void *(*alloc)(void *ptr, long size);
		287
		288	void
		289	ev_set_allocator (void *(*cb)(void *ptr, long size))
		290	{
		291	alloc = cb;
		292	}
		293
		294	inline_speed void *
		295	ev_realloc (void *ptr, long size)
		296	{
		297	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		298
		299	if (!ptr && size)
		300	{
		301	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		302	abort ();
		303	}
		304
		305	return ptr;
		306	}
		307
		308	#define ev_malloc(size) ev_realloc (0, (size))
		309	#define ev_free(ptr) ev_realloc ((ptr), 0)
		310
		311	/*****************************************************************************/
		312
		313	typedef struct
		314	{
		315	WL head;
		316	unsigned char events;
		317	unsigned char reify;
		318	#if EV_SELECT_IS_WINSOCKET
		319	SOCKET handle;
		320	#endif
		321	} ANFD;
		322
		323	typedef struct
		324	{
		325	W w;
		326	int events;
		327	} ANPENDING;
		328
		329	#if EV_USE_INOTIFY
		330	typedef struct
		331	{
		332	WL head;
		333	} ANFS;
		334	#endif
		335
		336	#if EV_MULTIPLICITY
		337
		338	struct ev_loop
		339	{
		340	ev_tstamp ev_rt_now;
		341	#define ev_rt_now ((loop)->ev_rt_now)
		342	#define VAR(name,decl) decl;
		343	#include "ev_vars.h"
		344	#undef VAR
		345	};
		346	#include "ev_wrap.h"
		347
		348	static struct ev_loop default_loop_struct;
		349	struct ev_loop *ev_default_loop_ptr;
		350
		351	#else
		352
75	ev_tstamp ev_now;	353	ev_tstamp ev_rt_now;
76	int ev_method;	354	#define VAR(name,decl) static decl;
		355	#include "ev_vars.h"
		356	#undef VAR
77		357
78	static int have_monotonic; /* runtime */	358	static int ev_default_loop_ptr;
79		359
80	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	360	#endif
81	static void (*method_modify)(int fd, int oev, int nev);
82	static void (*method_poll)(ev_tstamp timeout);
83		361
84	/*****************************************************************************/	362	/*****************************************************************************/
85		363
86	ev_tstamp	364	ev_tstamp
87	ev_time (void)	365	ev_time (void)
88	{	366	{
89	#if HAVE_REALTIME	367	#if EV_USE_REALTIME
90	struct timespec ts;	368	struct timespec ts;
91	clock_gettime (CLOCK_REALTIME, &ts);	369	clock_gettime (CLOCK_REALTIME, &ts);
92	return ts.tv_sec + ts.tv_nsec * 1e-9;	370	return ts.tv_sec + ts.tv_nsec * 1e-9;
93	#else	371	#else
94	struct timeval tv;	372	struct timeval tv;
95	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
96	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
97	#endif	375	#endif
98	}	376	}
99		377
100	static ev_tstamp	378	ev_tstamp inline_size
101	get_clock (void)	379	get_clock (void)
102	{	380	{
103	#if HAVE_MONOTONIC	381	#if EV_USE_MONOTONIC
104	if (have_monotonic)	382	if (expect_true (have_monotonic))
105	{	383	{
106	struct timespec ts;	384	struct timespec ts;
107	clock_gettime (CLOCK_MONOTONIC, &ts);	385	clock_gettime (CLOCK_MONOTONIC, &ts);
108	return ts.tv_sec + ts.tv_nsec * 1e-9;	386	return ts.tv_sec + ts.tv_nsec * 1e-9;
109	}	387	}
110	#endif	388	#endif
111		389
112	return ev_time ();	390	return ev_time ();
113	}	391	}
114		392
		393	#if EV_MULTIPLICITY
		394	ev_tstamp
		395	ev_now (EV_P)
		396	{
		397	return ev_rt_now;
		398	}
		399	#endif
		400
		401	int inline_size
		402	array_nextsize (int elem, int cur, int cnt)
		403	{
		404	int ncur = cur + 1;
		405
		406	do
		407	ncur <<= 1;
		408	while (cnt > ncur);
		409
		410	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		411	if (elem * ncur > 4096)
		412	{
		413	ncur *= elem;
		414	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		415	ncur = ncur - sizeof (void *) * 4;
		416	ncur /= elem;
		417	}
		418
		419	return ncur;
		420	}
		421
		422	inline_speed void *
		423	array_realloc (int elem, void *base, int *cur, int cnt)
		424	{
		425	*cur = array_nextsize (elem, *cur, cnt);
		426	return ev_realloc (base, elem * *cur);
		427	}
		428
115	#define array_needsize(base,cur,cnt,init) \	429	#define array_needsize(type,base,cur,cnt,init) \
116	if ((cnt) > cur) \	430	if (expect_false ((cnt) > (cur))) \
117	{ \	431	{ \
118	int newcnt = cur; \	432	int ocur_ = (cur); \
119	do \	433	(base) = (type *)array_realloc \
120	{ \	434	(sizeof (type), (base), &(cur), (cnt)); \
121	newcnt = (newcnt << 1) | 4 & ~3; \	435	init ((base) + (ocur_), (cur) - ocur_); \
122	} \	436	}
123	while ((cnt) > newcnt); \	437
		438	#if 0
		439	#define array_slim(type,stem) \
		440	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
124	\	441	{ \
125	base = realloc (base, sizeof (*base) * (newcnt)); \	442	stem ## max = array_roundsize (stem ## cnt >> 1); \
126	init (base + cur, newcnt - cur); \	443	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
127	cur = newcnt; \	444	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
128	}	445	}
		446	#endif
		447
		448	#define array_free(stem, idx) \
		449	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
129		450
130	/*****************************************************************************/	451	/*****************************************************************************/
131		452
132	typedef struct	453	void noinline
		454	ev_feed_event (EV_P_ void *w, int revents)
133	{	455	{
134	struct ev_io *head;	456	W w_ = (W)w;
135	int events;
136	} ANFD;
137		457
138	static ANFD *anfds;	458	if (expect_false (w_->pending))
139	static int anfdmax;	459	{
		460	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		461	return;
		462	}
140		463
141	static void	464	w_->pending = ++pendingcnt [ABSPRI (w_)];
		465	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		466	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		467	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		468	}
		469
		470	void inline_size
		471	queue_events (EV_P_ W *events, int eventcnt, int type)
		472	{
		473	int i;
		474
		475	for (i = 0; i < eventcnt; ++i)
		476	ev_feed_event (EV_A_ events [i], type);
		477	}
		478
		479	/*****************************************************************************/
		480
		481	void inline_size
142	anfds_init (ANFD *base, int count)	482	anfds_init (ANFD *base, int count)
143	{	483	{
144	while (count--)	484	while (count--)
145	{	485	{
146	base->head = 0;	486	base->head = 0;
147	base->events = EV_NONE;	487	base->events = EV_NONE;
		488	base->reify = 0;
		489
148	++base;	490	++base;
149	}	491	}
150	}	492	}
151		493
152	typedef struct	494	void inline_speed
153	{
154	W w;
155	int events;
156	} ANPENDING;
157
158	static ANPENDING *pendings;
159	static int pendingmax, pendingcnt;
160
161	static void
162	event (W w, int events)
163	{
164	if (w->active)
165	{
166	w->pending = ++pendingcnt;
167	array_needsize (pendings, pendingmax, pendingcnt, );
168	pendings [pendingcnt - 1].w = w;
169	pendings [pendingcnt - 1].events = events;
170	}
171	}
172
173	static void
174	queue_events (W *events, int eventcnt, int type)
175	{
176	int i;
177
178	for (i = 0; i < eventcnt; ++i)
179	event (events [i], type);
180	}
181
182	static void
183	fd_event (int fd, int events)	495	fd_event (EV_P_ int fd, int revents)
184	{	496	{
185	ANFD *anfd = anfds + fd;	497	ANFD *anfd = anfds + fd;
186	struct ev_io *w;	498	ev_io *w;
187		499
188	for (w = anfd->head; w; w = w->next)	500	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
189	{	501	{
190	int ev = w->events & events;	502	int ev = w->events & revents;
191		503
192	if (ev)	504	if (ev)
193	event ((W)w, ev);	505	ev_feed_event (EV_A_ (W)w, ev);
194	}	506	}
195	}	507	}
196		508
197	/*****************************************************************************/	509	void
		510	ev_feed_fd_event (EV_P_ int fd, int revents)
		511	{
		512	fd_event (EV_A_ fd, revents);
		513	}
198		514
199	static int *fdchanges;	515	void inline_size
200	static int fdchangemax, fdchangecnt;	516	fd_reify (EV_P)
201
202	static void
203	fd_reify (void)
204	{	517	{
205	int i;	518	int i;
206		519
207	for (i = 0; i < fdchangecnt; ++i)	520	for (i = 0; i < fdchangecnt; ++i)
208	{	521	{
209	int fd = fdchanges [i];	522	int fd = fdchanges [i];
210	ANFD *anfd = anfds + fd;	523	ANFD *anfd = anfds + fd;
211	struct ev_io *w;	524	ev_io *w;
212		525
213	int events = 0;	526	int events = 0;
214		527
215	for (w = anfd->head; w; w = w->next)	528	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
216	events |= w->events;	529	events |= w->events;
217		530
218	anfd->events &= ~EV_REIFY;	531	#if EV_SELECT_IS_WINSOCKET
219		532	if (events)
220	if (anfd->events != events)
221	{	533	{
222	method_modify (fd, anfd->events, events);	534	unsigned long argp;
223	anfd->events = events;	535	anfd->handle = _get_osfhandle (fd);
		536	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
224	}	537	}
		538	#endif
		539
		540	anfd->reify = 0;
		541
		542	backend_modify (EV_A_ fd, anfd->events, events);
		543	anfd->events = events;
225	}	544	}
226		545
227	fdchangecnt = 0;	546	fdchangecnt = 0;
228	}	547	}
229		548
230	static void	549	void inline_size
231	fd_change (int fd)	550	fd_change (EV_P_ int fd)
232	{	551	{
233	if (anfds [fd].events & EV_REIFY)	552	if (expect_false (anfds [fd].reify))
234	return;	553	return;
235		554
236	anfds [fd].events |= EV_REIFY;	555	anfds [fd].reify = 1;
237		556
238	++fdchangecnt;	557	++fdchangecnt;
239	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	558	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
240	fdchanges [fdchangecnt - 1] = fd;	559	fdchanges [fdchangecnt - 1] = fd;
241	}	560	}
242		561
		562	void inline_speed
		563	fd_kill (EV_P_ int fd)
		564	{
		565	ev_io *w;
		566
		567	while ((w = (ev_io *)anfds [fd].head))
		568	{
		569	ev_io_stop (EV_A_ w);
		570	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		571	}
		572	}
		573
		574	int inline_size
		575	fd_valid (int fd)
		576	{
		577	#ifdef _WIN32
		578	return _get_osfhandle (fd) != -1;
		579	#else
		580	return fcntl (fd, F_GETFD) != -1;
		581	#endif
		582	}
		583
243	/* called on EBADF to verify fds */	584	/* called on EBADF to verify fds */
244	static void	585	static void noinline
245	fd_recheck (void)	586	fd_ebadf (EV_P)
246	{	587	{
247	int fd;	588	int fd;
248		589
249	for (fd = 0; fd < anfdmax; ++fd)	590	for (fd = 0; fd < anfdmax; ++fd)
250	if (anfds [fd].events)	591	if (anfds [fd].events)
251	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	592	if (!fd_valid (fd) == -1 && errno == EBADF)
252	while (anfds [fd].head)	593	fd_kill (EV_A_ fd);
		594	}
		595
		596	/* called on ENOMEM in select/poll to kill some fds and retry */
		597	static void noinline
		598	fd_enomem (EV_P)
		599	{
		600	int fd;
		601
		602	for (fd = anfdmax; fd--; )
		603	if (anfds [fd].events)
253	{	604	{
254	event ((W)anfds [fd].head, EV_ERROR);	605	fd_kill (EV_A_ fd);
255	evio_stop (anfds [fd].head);	606	return;
256	}	607	}
		608	}
		609
		610	/* usually called after fork if backend needs to re-arm all fds from scratch */
		611	static void noinline
		612	fd_rearm_all (EV_P)
		613	{
		614	int fd;
		615
		616	for (fd = 0; fd < anfdmax; ++fd)
		617	if (anfds [fd].events)
		618	{
		619	anfds [fd].events = 0;
		620	fd_change (EV_A_ fd);
		621	}
257	}	622	}
258		623
259	/*****************************************************************************/	624	/*****************************************************************************/
260		625
261	static struct ev_timer **timers;	626	void inline_speed
262	static int timermax, timercnt;
263
264	static struct ev_periodic **periodics;
265	static int periodicmax, periodiccnt;
266
267	static void
268	upheap (WT *timers, int k)	627	upheap (WT *heap, int k)
269	{	628	{
270	WT w = timers [k];	629	WT w = heap [k];
271		630
272	while (k && timers [k >> 1]->at > w->at)	631	while (k && heap [k >> 1]->at > w->at)
273	{	632	{
274	timers [k] = timers [k >> 1];	633	heap [k] = heap [k >> 1];
275	timers [k]->active = k + 1;	634	((W)heap [k])->active = k + 1;
276	k >>= 1;	635	k >>= 1;
277	}	636	}
278		637
279	timers [k] = w;	638	heap [k] = w;
280	timers [k]->active = k + 1;	639	((W)heap [k])->active = k + 1;
281		640
282	}	641	}
283		642
284	static void	643	void inline_speed
285	downheap (WT *timers, int N, int k)	644	downheap (WT *heap, int N, int k)
286	{	645	{
287	WT w = timers [k];	646	WT w = heap [k];
288		647
289	while (k < (N >> 1))	648	while (k < (N >> 1))
290	{	649	{
291	int j = k << 1;	650	int j = k << 1;
292		651
293	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	652	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
294	++j;	653	++j;
295		654
296	if (w->at <= timers [j]->at)	655	if (w->at <= heap [j]->at)
297	break;	656	break;
298		657
299	timers [k] = timers [j];	658	heap [k] = heap [j];
300	timers [k]->active = k + 1;	659	((W)heap [k])->active = k + 1;
301	k = j;	660	k = j;
302	}	661	}
303		662
304	timers [k] = w;	663	heap [k] = w;
305	timers [k]->active = k + 1;	664	((W)heap [k])->active = k + 1;
		665	}
		666
		667	void inline_size
		668	adjustheap (WT *heap, int N, int k)
		669	{
		670	upheap (heap, k);
		671	downheap (heap, N, k);
306	}	672	}
307		673
308	/*****************************************************************************/	674	/*****************************************************************************/
309		675
310	typedef struct	676	typedef struct
311	{	677	{
312	struct ev_signal *head;	678	WL head;
313	sig_atomic_t gotsig;	679	sig_atomic_t volatile gotsig;
314	} ANSIG;	680	} ANSIG;
315		681
316	static ANSIG *signals;	682	static ANSIG *signals;
317	static int signalmax;	683	static int signalmax;
318		684
319	static int sigpipe [2];	685	static int sigpipe [2];
320	static sig_atomic_t gotsig;	686	static sig_atomic_t volatile gotsig;
321	static struct ev_io sigev;	687	static ev_io sigev;
322		688
323	static void	689	void inline_size
324	signals_init (ANSIG *base, int count)	690	signals_init (ANSIG *base, int count)
325	{	691	{
326	while (count--)	692	while (count--)
327	{	693	{
328	base->head = 0;	694	base->head = 0;
329	base->gotsig = 0;	695	base->gotsig = 0;
		696
330	++base;	697	++base;
331	}	698	}
332	}	699	}
333		700
334	static void	701	static void
335	sighandler (int signum)	702	sighandler (int signum)
336	{	703	{
		704	#if _WIN32
		705	signal (signum, sighandler);
		706	#endif
		707
337	signals [signum - 1].gotsig = 1;	708	signals [signum - 1].gotsig = 1;
338		709
339	if (!gotsig)	710	if (!gotsig)
340	{	711	{
		712	int old_errno = errno;
341	gotsig = 1;	713	gotsig = 1;
342	write (sigpipe [1], &gotsig, 1);	714	write (sigpipe [1], &signum, 1);
		715	errno = old_errno;
343	}	716	}
		717	}
		718
		719	void noinline
		720	ev_feed_signal_event (EV_P_ int signum)
		721	{
		722	WL w;
		723
		724	#if EV_MULTIPLICITY
		725	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		726	#endif
		727
		728	--signum;
		729
		730	if (signum < 0 || signum >= signalmax)
		731	return;
		732
		733	signals [signum].gotsig = 0;
		734
		735	for (w = signals [signum].head; w; w = w->next)
		736	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
344	}	737	}
345		738
346	static void	739	static void
347	sigcb (struct ev_io *iow, int revents)	740	sigcb (EV_P_ ev_io *iow, int revents)
348	{	741	{
349	struct ev_signal *w;
350	int sig;	742	int signum;
351		743
		744	read (sigpipe [0], &revents, 1);
352	gotsig = 0;	745	gotsig = 0;
353	read (sigpipe [0], &revents, 1);
354		746
355	for (sig = signalmax; sig--; )	747	for (signum = signalmax; signum--; )
356	if (signals [sig].gotsig)	748	if (signals [signum].gotsig)
		749	ev_feed_signal_event (EV_A_ signum + 1);
		750	}
		751
		752	void inline_size
		753	fd_intern (int fd)
		754	{
		755	#ifdef _WIN32
		756	int arg = 1;
		757	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		758	#else
		759	fcntl (fd, F_SETFD, FD_CLOEXEC);
		760	fcntl (fd, F_SETFL, O_NONBLOCK);
		761	#endif
		762	}
		763
		764	static void noinline
		765	siginit (EV_P)
		766	{
		767	fd_intern (sigpipe [0]);
		768	fd_intern (sigpipe [1]);
		769
		770	ev_io_set (&sigev, sigpipe [0], EV_READ);
		771	ev_io_start (EV_A_ &sigev);
		772	ev_unref (EV_A); /* child watcher should not keep loop alive */
		773	}
		774
		775	/*****************************************************************************/
		776
		777	static ev_child *childs [EV_PID_HASHSIZE];
		778
		779	#ifndef _WIN32
		780
		781	static ev_signal childev;
		782
		783	void inline_speed
		784	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		785	{
		786	ev_child *w;
		787
		788	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		789	if (w->pid == pid || !w->pid)
357	{	790	{
358	signals [sig].gotsig = 0;	791	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
359		792	w->rpid = pid;
360	for (w = signals [sig].head; w; w = w->next)	793	w->rstatus = status;
361	event ((W)w, EV_SIGNAL);	794	ev_feed_event (EV_A_ (W)w, EV_CHILD);
362	}	795	}
363	}	796	}
364
365	static void
366	siginit (void)
367	{
368	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
369	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
370
371	/* rather than sort out wether we really need nb, set it */
372	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
373	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
374
375	evio_set (&sigev, sigpipe [0], EV_READ);
376	evio_start (&sigev);
377	}
378
379	/*****************************************************************************/
380
381	static struct ev_idle **idles;
382	static int idlemax, idlecnt;
383
384	static struct ev_prepare **prepares;
385	static int preparemax, preparecnt;
386
387	static struct ev_check **checks;
388	static int checkmax, checkcnt;
389
390	/*****************************************************************************/
391
392	static struct ev_child *childs [PID_HASHSIZE];
393	static struct ev_signal childev;
394		797
395	#ifndef WCONTINUED	798	#ifndef WCONTINUED
396	# define WCONTINUED 0	799	# define WCONTINUED 0
397	#endif	800	#endif
398		801
399	static void	802	static void
400	childcb (struct ev_signal *sw, int revents)	803	childcb (EV_P_ ev_signal *sw, int revents)
401	{	804	{
402	struct ev_child *w;
403	int pid, status;	805	int pid, status;
404		806
		807	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
405	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	808	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
406	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	809	if (!WCONTINUED
407	if (w->pid == pid || w->pid == -1)	810	|| errno != EINVAL
408	{	811	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
409	w->status = status;	812	return;
410	event ((W)w, EV_CHILD);	813
411	}	814	/* make sure we are called again until all childs have been reaped */
		815	/* we need to do it this way so that the callback gets called before we continue */
		816	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		817
		818	child_reap (EV_A_ sw, pid, pid, status);
		819	if (EV_PID_HASHSIZE > 1)
		820	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
412	}	821	}
		822
		823	#endif
413		824
414	/*****************************************************************************/	825	/*****************************************************************************/
415		826
		827	#if EV_USE_PORT
		828	# include "ev_port.c"
		829	#endif
		830	#if EV_USE_KQUEUE
		831	# include "ev_kqueue.c"
		832	#endif
416	#if HAVE_EPOLL	833	#if EV_USE_EPOLL
417	# include "ev_epoll.c"	834	# include "ev_epoll.c"
418	#endif	835	#endif
		836	#if EV_USE_POLL
		837	# include "ev_poll.c"
		838	#endif
419	#if HAVE_SELECT	839	#if EV_USE_SELECT
420	# include "ev_select.c"	840	# include "ev_select.c"
421	#endif	841	#endif
422		842
423	int	843	int
424	ev_version_major (void)	844	ev_version_major (void)
…		…
430	ev_version_minor (void)	850	ev_version_minor (void)
431	{	851	{
432	return EV_VERSION_MINOR;	852	return EV_VERSION_MINOR;
433	}	853	}
434		854
435	int ev_init (int flags)	855	/* return true if we are running with elevated privileges and should ignore env variables */
		856	int inline_size
		857	enable_secure (void)
436	{	858	{
437	if (!ev_method)	859	#ifdef _WIN32
		860	return 0;
		861	#else
		862	return getuid () != geteuid ()
		863	|| getgid () != getegid ();
		864	#endif
		865	}
		866
		867	unsigned int
		868	ev_supported_backends (void)
		869	{
		870	unsigned int flags = 0;
		871
		872	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		873	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		874	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		875	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		876	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		877
		878	return flags;
		879	}
		880
		881	unsigned int
		882	ev_recommended_backends (void)
		883	{
		884	unsigned int flags = ev_supported_backends ();
		885
		886	#ifndef __NetBSD__
		887	/* kqueue is borked on everything but netbsd apparently */
		888	/* it usually doesn't work correctly on anything but sockets and pipes */
		889	flags &= ~EVBACKEND_KQUEUE;
		890	#endif
		891	#ifdef __APPLE__
		892	// flags &= ~EVBACKEND_KQUEUE; for documentation
		893	flags &= ~EVBACKEND_POLL;
		894	#endif
		895
		896	return flags;
		897	}
		898
		899	unsigned int
		900	ev_embeddable_backends (void)
		901	{
		902	return EVBACKEND_EPOLL
		903	| EVBACKEND_KQUEUE
		904	| EVBACKEND_PORT;
		905	}
		906
		907	unsigned int
		908	ev_backend (EV_P)
		909	{
		910	return backend;
		911	}
		912
		913	unsigned int
		914	ev_loop_count (EV_P)
		915	{
		916	return loop_count;
		917	}
		918
		919	static void noinline
		920	loop_init (EV_P_ unsigned int flags)
		921	{
		922	if (!backend)
438	{	923	{
439	#if HAVE_MONOTONIC	924	#if EV_USE_MONOTONIC
440	{	925	{
441	struct timespec ts;	926	struct timespec ts;
442	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	927	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
443	have_monotonic = 1;	928	have_monotonic = 1;
444	}	929	}
445	#endif	930	#endif
446		931
447	ev_now = ev_time ();	932	ev_rt_now = ev_time ();
448	now = get_clock ();	933	mn_now = get_clock ();
		934	now_floor = mn_now;
449	diff = ev_now - now;	935	rtmn_diff = ev_rt_now - mn_now;
450		936
		937	/* pid check not overridable via env */
		938	#ifndef _WIN32
		939	if (flags & EVFLAG_FORKCHECK)
		940	curpid = getpid ();
		941	#endif
		942
		943	if (!(flags & EVFLAG_NOENV)
		944	&& !enable_secure ()
		945	&& getenv ("LIBEV_FLAGS"))
		946	flags = atoi (getenv ("LIBEV_FLAGS"));
		947
		948	if (!(flags & 0x0000ffffUL))
		949	flags |= ev_recommended_backends ();
		950
		951	backend = 0;
		952	backend_fd = -1;
		953	#if EV_USE_INOTIFY
		954	fs_fd = -2;
		955	#endif
		956
		957	#if EV_USE_PORT
		958	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		959	#endif
		960	#if EV_USE_KQUEUE
		961	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		962	#endif
		963	#if EV_USE_EPOLL
		964	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		965	#endif
		966	#if EV_USE_POLL
		967	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
		968	#endif
		969	#if EV_USE_SELECT
		970	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
		971	#endif
		972
		973	ev_init (&sigev, sigcb);
		974	ev_set_priority (&sigev, EV_MAXPRI);
		975	}
		976	}
		977
		978	static void noinline
		979	loop_destroy (EV_P)
		980	{
		981	int i;
		982
		983	#if EV_USE_INOTIFY
		984	if (fs_fd >= 0)
		985	close (fs_fd);
		986	#endif
		987
		988	if (backend_fd >= 0)
		989	close (backend_fd);
		990
		991	#if EV_USE_PORT
		992	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		993	#endif
		994	#if EV_USE_KQUEUE
		995	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		996	#endif
		997	#if EV_USE_EPOLL
		998	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		999	#endif
		1000	#if EV_USE_POLL
		1001	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1002	#endif
		1003	#if EV_USE_SELECT
		1004	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1005	#endif
		1006
		1007	for (i = NUMPRI; i--; )
		1008	{
		1009	array_free (pending, [i]);
		1010	#if EV_IDLE_ENABLE
		1011	array_free (idle, [i]);
		1012	#endif
		1013	}
		1014
		1015	/* have to use the microsoft-never-gets-it-right macro */
		1016	array_free (fdchange, EMPTY);
		1017	array_free (timer, EMPTY);
		1018	#if EV_PERIODIC_ENABLE
		1019	array_free (periodic, EMPTY);
		1020	#endif
		1021	array_free (prepare, EMPTY);
		1022	array_free (check, EMPTY);
		1023
		1024	backend = 0;
		1025	}
		1026
		1027	void inline_size infy_fork (EV_P);
		1028
		1029	void inline_size
		1030	loop_fork (EV_P)
		1031	{
		1032	#if EV_USE_PORT
		1033	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1034	#endif
		1035	#if EV_USE_KQUEUE
		1036	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1037	#endif
		1038	#if EV_USE_EPOLL
		1039	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1040	#endif
		1041	#if EV_USE_INOTIFY
		1042	infy_fork (EV_A);
		1043	#endif
		1044
		1045	if (ev_is_active (&sigev))
		1046	{
		1047	/* default loop */
		1048
		1049	ev_ref (EV_A);
		1050	ev_io_stop (EV_A_ &sigev);
		1051	close (sigpipe [0]);
		1052	close (sigpipe [1]);
		1053
		1054	while (pipe (sigpipe))
		1055	syserr ("(libev) error creating pipe");
		1056
		1057	siginit (EV_A);
		1058	}
		1059
		1060	postfork = 0;
		1061	}
		1062
		1063	#if EV_MULTIPLICITY
		1064	struct ev_loop *
		1065	ev_loop_new (unsigned int flags)
		1066	{
		1067	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1068
		1069	memset (loop, 0, sizeof (struct ev_loop));
		1070
		1071	loop_init (EV_A_ flags);
		1072
		1073	if (ev_backend (EV_A))
		1074	return loop;
		1075
		1076	return 0;
		1077	}
		1078
		1079	void
		1080	ev_loop_destroy (EV_P)
		1081	{
		1082	loop_destroy (EV_A);
		1083	ev_free (loop);
		1084	}
		1085
		1086	void
		1087	ev_loop_fork (EV_P)
		1088	{
		1089	postfork = 1;
		1090	}
		1091
		1092	#endif
		1093
		1094	#if EV_MULTIPLICITY
		1095	struct ev_loop *
		1096	ev_default_loop_init (unsigned int flags)
		1097	#else
		1098	int
		1099	ev_default_loop (unsigned int flags)
		1100	#endif
		1101	{
		1102	if (sigpipe [0] == sigpipe [1])
451	if (pipe (sigpipe))	1103	if (pipe (sigpipe))
452	return 0;	1104	return 0;
453		1105
454	ev_method = EVMETHOD_NONE;	1106	if (!ev_default_loop_ptr)
455	#if HAVE_EPOLL	1107	{
456	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	1108	#if EV_MULTIPLICITY
		1109	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1110	#else
		1111	ev_default_loop_ptr = 1;
457	#endif	1112	#endif
458	#if HAVE_SELECT
459	if (ev_method == EVMETHOD_NONE) select_init (flags);
460	#endif
461		1113
462	if (ev_method)	1114	loop_init (EV_A_ flags);
		1115
		1116	if (ev_backend (EV_A))
463	{	1117	{
464	evw_init (&sigev, sigcb);
465	siginit ();	1118	siginit (EV_A);
466		1119
		1120	#ifndef _WIN32
467	evsignal_init (&childev, childcb, SIGCHLD);	1121	ev_signal_init (&childev, childcb, SIGCHLD);
		1122	ev_set_priority (&childev, EV_MAXPRI);
468	evsignal_start (&childev);	1123	ev_signal_start (EV_A_ &childev);
		1124	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1125	#endif
469	}	1126	}
		1127	else
		1128	ev_default_loop_ptr = 0;
470	}	1129	}
471		1130
472	return ev_method;	1131	return ev_default_loop_ptr;
		1132	}
		1133
		1134	void
		1135	ev_default_destroy (void)
		1136	{
		1137	#if EV_MULTIPLICITY
		1138	struct ev_loop *loop = ev_default_loop_ptr;
		1139	#endif
		1140
		1141	#ifndef _WIN32
		1142	ev_ref (EV_A); /* child watcher */
		1143	ev_signal_stop (EV_A_ &childev);
		1144	#endif
		1145
		1146	ev_ref (EV_A); /* signal watcher */
		1147	ev_io_stop (EV_A_ &sigev);
		1148
		1149	close (sigpipe [0]); sigpipe [0] = 0;
		1150	close (sigpipe [1]); sigpipe [1] = 0;
		1151
		1152	loop_destroy (EV_A);
		1153	}
		1154
		1155	void
		1156	ev_default_fork (void)
		1157	{
		1158	#if EV_MULTIPLICITY
		1159	struct ev_loop *loop = ev_default_loop_ptr;
		1160	#endif
		1161
		1162	if (backend)
		1163	postfork = 1;
473	}	1164	}
474		1165
475	/*****************************************************************************/	1166	/*****************************************************************************/
476		1167
477	void	1168	void inline_speed
478	ev_prefork (void)
479	{
480	/* nop */
481	}
482
483	void
484	ev_postfork_parent (void)
485	{
486	/* nop */
487	}
488
489	void
490	ev_postfork_child (void)
491	{
492	#if HAVE_EPOLL
493	if (ev_method == EVMETHOD_EPOLL)
494	epoll_postfork_child ();
495	#endif
496
497	evio_stop (&sigev);
498	close (sigpipe [0]);
499	close (sigpipe [1]);
500	pipe (sigpipe);
501	siginit ();
502	}
503
504	/*****************************************************************************/
505
506	static void
507	call_pending (void)	1169	call_pending (EV_P)
508	{	1170	{
		1171	int pri;
		1172
		1173	for (pri = NUMPRI; pri--; )
509	while (pendingcnt)	1174	while (pendingcnt [pri])
510	{	1175	{
511	ANPENDING *p = pendings + --pendingcnt;	1176	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
512		1177
513	if (p->w)	1178	if (expect_true (p->w))
514	{	1179	{
		1180	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1181
515	p->w->pending = 0;	1182	p->w->pending = 0;
516	p->w->cb (p->w, p->events);	1183	EV_CB_INVOKE (p->w, p->events);
517	}	1184	}
518	}	1185	}
519	}	1186	}
520		1187
521	static void	1188	void inline_size
522	timers_reify (void)	1189	timers_reify (EV_P)
523	{	1190	{
524	while (timercnt && timers [0]->at <= now)	1191	while (timercnt && ((WT)timers [0])->at <= mn_now)
525	{	1192	{
526	struct ev_timer *w = timers [0];	1193	ev_timer *w = timers [0];
527		1194
528	event ((W)w, EV_TIMEOUT);	1195	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
529		1196
530	/* first reschedule or stop timer */	1197	/* first reschedule or stop timer */
531	if (w->repeat)	1198	if (w->repeat)
532	{	1199	{
		1200	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1201
533	w->at = now + w->repeat;	1202	((WT)w)->at += w->repeat;
534	assert (("timer timeout in the past, negative repeat?", w->at > now));	1203	if (((WT)w)->at < mn_now)
		1204	((WT)w)->at = mn_now;
		1205
535	downheap ((WT *)timers, timercnt, 0);	1206	downheap ((WT *)timers, timercnt, 0);
536	}	1207	}
537	else	1208	else
538	evtimer_stop (w); /* nonrepeating: stop timer */	1209	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
539	}
540	}
541		1210
542	static void	1211	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1212	}
		1213	}
		1214
		1215	#if EV_PERIODIC_ENABLE
		1216	void inline_size
543	periodics_reify (void)	1217	periodics_reify (EV_P)
544	{	1218	{
545	while (periodiccnt && periodics [0]->at <= ev_now)	1219	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
546	{	1220	{
547	struct ev_periodic *w = periodics [0];	1221	ev_periodic *w = periodics [0];
		1222
		1223	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
548		1224
549	/* first reschedule or stop timer */	1225	/* first reschedule or stop timer */
550	if (w->interval)	1226	if (w->reschedule_cb)
551	{	1227	{
		1228	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1229	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1230	downheap ((WT *)periodics, periodiccnt, 0);
		1231	}
		1232	else if (w->interval)
		1233	{
552	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1234	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
553	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1235	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
554	downheap ((WT *)periodics, periodiccnt, 0);	1236	downheap ((WT *)periodics, periodiccnt, 0);
555	}	1237	}
556	else	1238	else
557	evperiodic_stop (w); /* nonrepeating: stop timer */	1239	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
558		1240
559	event ((W)w, EV_TIMEOUT);	1241	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
560	}	1242	}
561	}	1243	}
562		1244
563	static void	1245	static void noinline
564	periodics_reschedule (ev_tstamp diff)	1246	periodics_reschedule (EV_P)
565	{	1247	{
566	int i;	1248	int i;
567		1249
568	/* adjust periodics after time jump */	1250	/* adjust periodics after time jump */
569	for (i = 0; i < periodiccnt; ++i)	1251	for (i = 0; i < periodiccnt; ++i)
570	{	1252	{
571	struct ev_periodic *w = periodics [i];	1253	ev_periodic *w = periodics [i];
572		1254
		1255	if (w->reschedule_cb)
		1256	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
573	if (w->interval)	1257	else if (w->interval)
		1258	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1259	}
		1260
		1261	/* now rebuild the heap */
		1262	for (i = periodiccnt >> 1; i--; )
		1263	downheap ((WT *)periodics, periodiccnt, i);
		1264	}
		1265	#endif
		1266
		1267	#if EV_IDLE_ENABLE
		1268	void inline_size
		1269	idle_reify (EV_P)
		1270	{
		1271	if (expect_false (idleall))
		1272	{
		1273	int pri;
		1274
		1275	for (pri = NUMPRI; pri--; )
574	{	1276	{
575	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1277	if (pendingcnt [pri])
		1278	break;
576		1279
577	if (fabs (diff) >= 1e-4)	1280	if (idlecnt [pri])
578	{	1281	{
579	evperiodic_stop (w);	1282	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
580	evperiodic_start (w);	1283	break;
581
582	i = 0; /* restart loop, inefficient, but time jumps should be rare */
583	}	1284	}
584	}	1285	}
585	}	1286	}
586	}	1287	}
		1288	#endif
587		1289
588	static void	1290	int inline_size
		1291	time_update_monotonic (EV_P)
		1292	{
		1293	mn_now = get_clock ();
		1294
		1295	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1296	{
		1297	ev_rt_now = rtmn_diff + mn_now;
		1298	return 0;
		1299	}
		1300	else
		1301	{
		1302	now_floor = mn_now;
		1303	ev_rt_now = ev_time ();
		1304	return 1;
		1305	}
		1306	}
		1307
		1308	void inline_size
589	time_update (void)	1309	time_update (EV_P)
590	{	1310	{
591	int i;	1311	int i;
592		1312
593	ev_now = ev_time ();	1313	#if EV_USE_MONOTONIC
594
595	if (have_monotonic)	1314	if (expect_true (have_monotonic))
596	{	1315	{
597	ev_tstamp odiff = diff;	1316	if (time_update_monotonic (EV_A))
598
599	for (i = 4; --i; ) /* loop a few times, before making important decisions */
600	{	1317	{
601	now = get_clock ();	1318	ev_tstamp odiff = rtmn_diff;
		1319
		1320	/* loop a few times, before making important decisions.
		1321	* on the choice of "4": one iteration isn't enough,
		1322	* in case we get preempted during the calls to
		1323	* ev_time and get_clock. a second call is almost guaranteed
		1324	* to succeed in that case, though. and looping a few more times
		1325	* doesn't hurt either as we only do this on time-jumps or
		1326	* in the unlikely event of having been preempted here.
		1327	*/
		1328	for (i = 4; --i; )
		1329	{
602	diff = ev_now - now;	1330	rtmn_diff = ev_rt_now - mn_now;
603		1331
604	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1332	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
605	return; /* all is well */	1333	return; /* all is well */
606		1334
607	ev_now = ev_time ();	1335	ev_rt_now = ev_time ();
		1336	mn_now = get_clock ();
		1337	now_floor = mn_now;
		1338	}
		1339
		1340	# if EV_PERIODIC_ENABLE
		1341	periodics_reschedule (EV_A);
		1342	# endif
		1343	/* no timer adjustment, as the monotonic clock doesn't jump */
		1344	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
608	}	1345	}
609
610	periodics_reschedule (diff - odiff);
611	/* no timer adjustment, as the monotonic clock doesn't jump */
612	}	1346	}
613	else	1347	else
		1348	#endif
614	{	1349	{
615	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	1350	ev_rt_now = ev_time ();
		1351
		1352	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
616	{	1353	{
		1354	#if EV_PERIODIC_ENABLE
617	periodics_reschedule (ev_now - now);	1355	periodics_reschedule (EV_A);
		1356	#endif
618		1357
619	/* adjust timers. this is easy, as the offset is the same for all */	1358	/* adjust timers. this is easy, as the offset is the same for all of them */
620	for (i = 0; i < timercnt; ++i)	1359	for (i = 0; i < timercnt; ++i)
621	timers [i]->at += diff;	1360	((WT)timers [i])->at += ev_rt_now - mn_now;
622	}	1361	}
623		1362
624	now = ev_now;	1363	mn_now = ev_rt_now;
625	}	1364	}
626	}	1365	}
627		1366
628	int ev_loop_done;	1367	void
		1368	ev_ref (EV_P)
		1369	{
		1370	++activecnt;
		1371	}
629		1372
		1373	void
		1374	ev_unref (EV_P)
		1375	{
		1376	--activecnt;
		1377	}
		1378
		1379	static int loop_done;
		1380
		1381	void
630	void ev_loop (int flags)	1382	ev_loop (EV_P_ int flags)
631	{	1383	{
632	double block;
633	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1384	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1385	? EVUNLOOP_ONE
		1386	: EVUNLOOP_CANCEL;
		1387
		1388	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
634		1389
635	do	1390	do
636	{	1391	{
		1392	#ifndef _WIN32
		1393	if (expect_false (curpid)) /* penalise the forking check even more */
		1394	if (expect_false (getpid () != curpid))
		1395	{
		1396	curpid = getpid ();
		1397	postfork = 1;
		1398	}
		1399	#endif
		1400
		1401	#if EV_FORK_ENABLE
		1402	/* we might have forked, so queue fork handlers */
		1403	if (expect_false (postfork))
		1404	if (forkcnt)
		1405	{
		1406	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1407	call_pending (EV_A);
		1408	}
		1409	#endif
		1410
637	/* queue check watchers (and execute them) */	1411	/* queue check watchers (and execute them) */
638	if (preparecnt)	1412	if (expect_false (preparecnt))
639	{	1413	{
640	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1414	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
641	call_pending ();	1415	call_pending (EV_A);
642	}	1416	}
643		1417
		1418	if (expect_false (!activecnt))
		1419	break;
		1420
		1421	/* we might have forked, so reify kernel state if necessary */
		1422	if (expect_false (postfork))
		1423	loop_fork (EV_A);
		1424
644	/* update fd-related kernel structures */	1425	/* update fd-related kernel structures */
645	fd_reify ();	1426	fd_reify (EV_A);
646		1427
647	/* calculate blocking time */	1428	/* calculate blocking time */
		1429	{
		1430	ev_tstamp block;
648		1431
649	/* we only need this for !monotonic clockor timers, but as we basically	1432	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
650	always have timers, we just calculate it always */	1433	block = 0.; /* do not block at all */
651	ev_now = ev_time ();
652
653	if (flags & EVLOOP_NONBLOCK || idlecnt)
654	block = 0.;
655	else	1434	else
656	{	1435	{
		1436	/* update time to cancel out callback processing overhead */
		1437	#if EV_USE_MONOTONIC
		1438	if (expect_true (have_monotonic))
		1439	time_update_monotonic (EV_A);
		1440	else
		1441	#endif
		1442	{
		1443	ev_rt_now = ev_time ();
		1444	mn_now = ev_rt_now;
		1445	}
		1446
657	block = MAX_BLOCKTIME;	1447	block = MAX_BLOCKTIME;
658		1448
659	if (timercnt)	1449	if (timercnt)
660	{	1450	{
661	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1451	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
662	if (block > to) block = to;	1452	if (block > to) block = to;
663	}	1453	}
664		1454
		1455	#if EV_PERIODIC_ENABLE
665	if (periodiccnt)	1456	if (periodiccnt)
666	{	1457	{
667	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1458	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
668	if (block > to) block = to;	1459	if (block > to) block = to;
669	}	1460	}
		1461	#endif
670		1462
671	if (block < 0.) block = 0.;	1463	if (expect_false (block < 0.)) block = 0.;
672	}	1464	}
673		1465
674	method_poll (block);	1466	++loop_count;
		1467	backend_poll (EV_A_ block);
		1468	}
675		1469
676	/* update ev_now, do magic */	1470	/* update ev_rt_now, do magic */
677	time_update ();	1471	time_update (EV_A);
678		1472
679	/* queue pending timers and reschedule them */	1473	/* queue pending timers and reschedule them */
680	timers_reify (); /* relative timers called last */	1474	timers_reify (EV_A); /* relative timers called last */
		1475	#if EV_PERIODIC_ENABLE
681	periodics_reify (); /* absolute timers called first */	1476	periodics_reify (EV_A); /* absolute timers called first */
		1477	#endif
682		1478
		1479	#if EV_IDLE_ENABLE
683	/* queue idle watchers unless io or timers are pending */	1480	/* queue idle watchers unless other events are pending */
684	if (!pendingcnt)	1481	idle_reify (EV_A);
685	queue_events ((W *)idles, idlecnt, EV_IDLE);	1482	#endif
686		1483
687	/* queue check watchers, to be executed first */	1484	/* queue check watchers, to be executed first */
688	if (checkcnt)	1485	if (expect_false (checkcnt))
689	queue_events ((W *)checks, checkcnt, EV_CHECK);	1486	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
690		1487
691	call_pending ();	1488	call_pending (EV_A);
692	}
693	while (!ev_loop_done);
694		1489
695	if (ev_loop_done != 2)	1490	}
		1491	while (expect_true (activecnt && !loop_done));
		1492
		1493	if (loop_done == EVUNLOOP_ONE)
		1494	loop_done = EVUNLOOP_CANCEL;
		1495	}
		1496
		1497	void
		1498	ev_unloop (EV_P_ int how)
		1499	{
696	ev_loop_done = 0;	1500	loop_done = how;
697	}	1501	}
698		1502
699	/*****************************************************************************/	1503	/*****************************************************************************/
700		1504
701	static void	1505	void inline_size
702	wlist_add (WL *head, WL elem)	1506	wlist_add (WL *head, WL elem)
703	{	1507	{
704	elem->next = *head;	1508	elem->next = *head;
705	*head = elem;	1509	*head = elem;
706	}	1510	}
707		1511
708	static void	1512	void inline_size
709	wlist_del (WL *head, WL elem)	1513	wlist_del (WL *head, WL elem)
710	{	1514	{
711	while (*head)	1515	while (*head)
712	{	1516	{
713	if (*head == elem)	1517	if (*head == elem)
…		…
718		1522
719	head = &(*head)->next;	1523	head = &(*head)->next;
720	}	1524	}
721	}	1525	}
722		1526
723	static void	1527	void inline_speed
724	ev_clear (W w)	1528	ev_clear_pending (EV_P_ W w)
725	{	1529	{
726	if (w->pending)	1530	if (w->pending)
727	{	1531	{
728	pendings [w->pending - 1].w = 0;	1532	pendings [ABSPRI (w)][w->pending - 1].w = 0;
729	w->pending = 0;	1533	w->pending = 0;
730	}	1534	}
731	}	1535	}
732		1536
733	static void	1537	void inline_size
		1538	pri_adjust (EV_P_ W w)
		1539	{
		1540	int pri = w->priority;
		1541	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1542	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1543	w->priority = pri;
		1544	}
		1545
		1546	void inline_speed
734	ev_start (W w, int active)	1547	ev_start (EV_P_ W w, int active)
735	{	1548	{
		1549	pri_adjust (EV_A_ w);
736	w->active = active;	1550	w->active = active;
		1551	ev_ref (EV_A);
737	}	1552	}
738		1553
739	static void	1554	void inline_size
740	ev_stop (W w)	1555	ev_stop (EV_P_ W w)
741	{	1556	{
		1557	ev_unref (EV_A);
742	w->active = 0;	1558	w->active = 0;
743	}	1559	}
744		1560
745	/*****************************************************************************/	1561	/*****************************************************************************/
746		1562
747	void	1563	void
748	evio_start (struct ev_io *w)	1564	ev_io_start (EV_P_ ev_io *w)
749	{	1565	{
750	if (ev_is_active (w))
751	return;
752
753	int fd = w->fd;	1566	int fd = w->fd;
754		1567
		1568	if (expect_false (ev_is_active (w)))
		1569	return;
		1570
		1571	assert (("ev_io_start called with negative fd", fd >= 0));
		1572
755	ev_start ((W)w, 1);	1573	ev_start (EV_A_ (W)w, 1);
756	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1574	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
757	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1575	wlist_add ((WL *)&anfds[fd].head, (WL)w);
758		1576
759	fd_change (fd);	1577	fd_change (EV_A_ fd);
760	}	1578	}
761		1579
762	void	1580	void
763	evio_stop (struct ev_io *w)	1581	ev_io_stop (EV_P_ ev_io *w)
764	{	1582	{
765	ev_clear ((W)w);	1583	ev_clear_pending (EV_A_ (W)w);
766	if (!ev_is_active (w))	1584	if (expect_false (!ev_is_active (w)))
767	return;	1585	return;
		1586
		1587	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
768		1588
769	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1589	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
770	ev_stop ((W)w);	1590	ev_stop (EV_A_ (W)w);
771		1591
772	fd_change (w->fd);	1592	fd_change (EV_A_ w->fd);
773	}	1593	}
774		1594
775	void	1595	void
776	evtimer_start (struct ev_timer *w)	1596	ev_timer_start (EV_P_ ev_timer *w)
777	{	1597	{
778	if (ev_is_active (w))	1598	if (expect_false (ev_is_active (w)))
779	return;	1599	return;
780		1600
781	w->at += now;	1601	((WT)w)->at += mn_now;
782		1602
783	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1603	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
784		1604
785	ev_start ((W)w, ++timercnt);	1605	ev_start (EV_A_ (W)w, ++timercnt);
786	array_needsize (timers, timermax, timercnt, );	1606	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
787	timers [timercnt - 1] = w;	1607	timers [timercnt - 1] = w;
788	upheap ((WT *)timers, timercnt - 1);	1608	upheap ((WT *)timers, timercnt - 1);
789	}
790		1609
		1610	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1611	}
		1612
791	void	1613	void
792	evtimer_stop (struct ev_timer *w)	1614	ev_timer_stop (EV_P_ ev_timer *w)
793	{	1615	{
794	ev_clear ((W)w);	1616	ev_clear_pending (EV_A_ (W)w);
795	if (!ev_is_active (w))	1617	if (expect_false (!ev_is_active (w)))
796	return;	1618	return;
797		1619
798	if (w->active < timercnt--)	1620	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1621
		1622	{
		1623	int active = ((W)w)->active;
		1624
		1625	if (expect_true (--active < --timercnt))
799	{	1626	{
800	timers [w->active - 1] = timers [timercnt];	1627	timers [active] = timers [timercnt];
801	downheap ((WT *)timers, timercnt, w->active - 1);	1628	adjustheap ((WT *)timers, timercnt, active);
802	}	1629	}
		1630	}
803		1631
804	w->at = w->repeat;	1632	((WT)w)->at -= mn_now;
805		1633
806	ev_stop ((W)w);	1634	ev_stop (EV_A_ (W)w);
807	}	1635	}
808		1636
809	void	1637	void
810	evtimer_again (struct ev_timer *w)	1638	ev_timer_again (EV_P_ ev_timer *w)
811	{	1639	{
812	if (ev_is_active (w))	1640	if (ev_is_active (w))
813	{	1641	{
814	if (w->repeat)	1642	if (w->repeat)
815	{	1643	{
816	w->at = now + w->repeat;	1644	((WT)w)->at = mn_now + w->repeat;
817	downheap ((WT *)timers, timercnt, w->active - 1);	1645	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
818	}	1646	}
819	else	1647	else
820	evtimer_stop (w);	1648	ev_timer_stop (EV_A_ w);
821	}	1649	}
822	else if (w->repeat)	1650	else if (w->repeat)
		1651	{
		1652	w->at = w->repeat;
823	evtimer_start (w);	1653	ev_timer_start (EV_A_ w);
		1654	}
824	}	1655	}
825		1656
		1657	#if EV_PERIODIC_ENABLE
826	void	1658	void
827	evperiodic_start (struct ev_periodic *w)	1659	ev_periodic_start (EV_P_ ev_periodic *w)
828	{	1660	{
829	if (ev_is_active (w))	1661	if (expect_false (ev_is_active (w)))
830	return;	1662	return;
831		1663
832	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1664	if (w->reschedule_cb)
833		1665	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1666	else if (w->interval)
		1667	{
		1668	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
834	/* this formula differs from the one in periodic_reify because we do not always round up */	1669	/* this formula differs from the one in periodic_reify because we do not always round up */
835	if (w->interval)
836	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1670	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1671	}
837		1672
838	ev_start ((W)w, ++periodiccnt);	1673	ev_start (EV_A_ (W)w, ++periodiccnt);
839	array_needsize (periodics, periodicmax, periodiccnt, );	1674	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
840	periodics [periodiccnt - 1] = w;	1675	periodics [periodiccnt - 1] = w;
841	upheap ((WT *)periodics, periodiccnt - 1);	1676	upheap ((WT *)periodics, periodiccnt - 1);
842	}
843		1677
		1678	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1679	}
		1680
844	void	1681	void
845	evperiodic_stop (struct ev_periodic *w)	1682	ev_periodic_stop (EV_P_ ev_periodic *w)
846	{	1683	{
847	ev_clear ((W)w);	1684	ev_clear_pending (EV_A_ (W)w);
848	if (!ev_is_active (w))	1685	if (expect_false (!ev_is_active (w)))
849	return;	1686	return;
850		1687
851	if (w->active < periodiccnt--)	1688	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1689
		1690	{
		1691	int active = ((W)w)->active;
		1692
		1693	if (expect_true (--active < --periodiccnt))
852	{	1694	{
853	periodics [w->active - 1] = periodics [periodiccnt];	1695	periodics [active] = periodics [periodiccnt];
854	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1696	adjustheap ((WT *)periodics, periodiccnt, active);
855	}	1697	}
		1698	}
856		1699
857	ev_stop ((W)w);	1700	ev_stop (EV_A_ (W)w);
858	}	1701	}
859		1702
860	void	1703	void
		1704	ev_periodic_again (EV_P_ ev_periodic *w)
		1705	{
		1706	/* TODO: use adjustheap and recalculation */
		1707	ev_periodic_stop (EV_A_ w);
		1708	ev_periodic_start (EV_A_ w);
		1709	}
		1710	#endif
		1711
		1712	#ifndef SA_RESTART
		1713	# define SA_RESTART 0
		1714	#endif
		1715
		1716	void
861	evsignal_start (struct ev_signal *w)	1717	ev_signal_start (EV_P_ ev_signal *w)
862	{	1718	{
		1719	#if EV_MULTIPLICITY
		1720	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1721	#endif
863	if (ev_is_active (w))	1722	if (expect_false (ev_is_active (w)))
864	return;	1723	return;
865		1724
		1725	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1726
866	ev_start ((W)w, 1);	1727	ev_start (EV_A_ (W)w, 1);
867	array_needsize (signals, signalmax, w->signum, signals_init);	1728	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
868	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1729	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
869		1730
870	if (!w->next)	1731	if (!((WL)w)->next)
871	{	1732	{
		1733	#if _WIN32
		1734	signal (w->signum, sighandler);
		1735	#else
872	struct sigaction sa;	1736	struct sigaction sa;
873	sa.sa_handler = sighandler;	1737	sa.sa_handler = sighandler;
874	sigfillset (&sa.sa_mask);	1738	sigfillset (&sa.sa_mask);
875	sa.sa_flags = 0;	1739	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
876	sigaction (w->signum, &sa, 0);	1740	sigaction (w->signum, &sa, 0);
		1741	#endif
877	}	1742	}
878	}	1743	}
879		1744
880	void	1745	void
881	evsignal_stop (struct ev_signal *w)	1746	ev_signal_stop (EV_P_ ev_signal *w)
882	{	1747	{
883	ev_clear ((W)w);	1748	ev_clear_pending (EV_A_ (W)w);
884	if (!ev_is_active (w))	1749	if (expect_false (!ev_is_active (w)))
885	return;	1750	return;
886		1751
887	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1752	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
888	ev_stop ((W)w);	1753	ev_stop (EV_A_ (W)w);
889		1754
890	if (!signals [w->signum - 1].head)	1755	if (!signals [w->signum - 1].head)
891	signal (w->signum, SIG_DFL);	1756	signal (w->signum, SIG_DFL);
892	}	1757	}
893		1758
894	void evidle_start (struct ev_idle *w)	1759	void
		1760	ev_child_start (EV_P_ ev_child *w)
895	{	1761	{
		1762	#if EV_MULTIPLICITY
		1763	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1764	#endif
896	if (ev_is_active (w))	1765	if (expect_false (ev_is_active (w)))
897	return;	1766	return;
898		1767
899	ev_start ((W)w, ++idlecnt);	1768	ev_start (EV_A_ (W)w, 1);
900	array_needsize (idles, idlemax, idlecnt, );	1769	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
901	idles [idlecnt - 1] = w;
902	}	1770	}
903		1771
904	void evidle_stop (struct ev_idle *w)	1772	void
		1773	ev_child_stop (EV_P_ ev_child *w)
905	{	1774	{
906	ev_clear ((W)w);	1775	ev_clear_pending (EV_A_ (W)w);
907	if (ev_is_active (w))	1776	if (expect_false (!ev_is_active (w)))
908	return;	1777	return;
909		1778
910	idles [w->active - 1] = idles [--idlecnt];	1779	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
911	ev_stop ((W)w);	1780	ev_stop (EV_A_ (W)w);
912	}	1781	}
913		1782
		1783	#if EV_STAT_ENABLE
		1784
		1785	# ifdef _WIN32
		1786	# undef lstat
		1787	# define lstat(a,b) _stati64 (a,b)
		1788	# endif
		1789
		1790	#define DEF_STAT_INTERVAL 5.0074891
		1791	#define MIN_STAT_INTERVAL 0.1074891
		1792
		1793	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1794
		1795	#if EV_USE_INOTIFY
		1796	# define EV_INOTIFY_BUFSIZE 8192
		1797
		1798	static void noinline
		1799	infy_add (EV_P_ ev_stat *w)
		1800	{
		1801	w->wd = inotify_add_watch (fs_fd, w->path, IN_ATTRIB | IN_DELETE_SELF | IN_MOVE_SELF | IN_MODIFY | IN_DONT_FOLLOW | IN_MASK_ADD);
		1802
		1803	if (w->wd < 0)
		1804	{
		1805	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1806
		1807	/* monitor some parent directory for speedup hints */
		1808	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1809	{
		1810	char path [4096];
		1811	strcpy (path, w->path);
		1812
		1813	do
		1814	{
		1815	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1816	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1817
		1818	char *pend = strrchr (path, '/');
		1819
		1820	if (!pend)
		1821	break; /* whoops, no '/', complain to your admin */
		1822
		1823	*pend = 0;
		1824	w->wd = inotify_add_watch (fs_fd, path, mask);
		1825	}
		1826	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1827	}
		1828	}
		1829	else
		1830	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1831
		1832	if (w->wd >= 0)
		1833	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1834	}
		1835
		1836	static void noinline
		1837	infy_del (EV_P_ ev_stat *w)
		1838	{
		1839	int slot;
		1840	int wd = w->wd;
		1841
		1842	if (wd < 0)
		1843	return;
		1844
		1845	w->wd = -2;
		1846	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1847	wlist_del (&fs_hash [slot].head, (WL)w);
		1848
		1849	/* remove this watcher, if others are watching it, they will rearm */
		1850	inotify_rm_watch (fs_fd, wd);
		1851	}
		1852
		1853	static void noinline
		1854	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1855	{
		1856	if (slot < 0)
		1857	/* overflow, need to check for all hahs slots */
		1858	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1859	infy_wd (EV_A_ slot, wd, ev);
		1860	else
		1861	{
		1862	WL w_;
		1863
		1864	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1865	{
		1866	ev_stat *w = (ev_stat *)w_;
		1867	w_ = w_->next; /* lets us remove this watcher and all before it */
		1868
		1869	if (w->wd == wd || wd == -1)
		1870	{
		1871	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1872	{
		1873	w->wd = -1;
		1874	infy_add (EV_A_ w); /* re-add, no matter what */
		1875	}
		1876
		1877	stat_timer_cb (EV_A_ &w->timer, 0);
		1878	}
		1879	}
		1880	}
		1881	}
		1882
		1883	static void
		1884	infy_cb (EV_P_ ev_io *w, int revents)
		1885	{
		1886	char buf [EV_INOTIFY_BUFSIZE];
		1887	struct inotify_event *ev = (struct inotify_event *)buf;
		1888	int ofs;
		1889	int len = read (fs_fd, buf, sizeof (buf));
		1890
		1891	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1892	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1893	}
		1894
		1895	void inline_size
		1896	infy_init (EV_P)
		1897	{
		1898	if (fs_fd != -2)
		1899	return;
		1900
		1901	fs_fd = inotify_init ();
		1902
		1903	if (fs_fd >= 0)
		1904	{
		1905	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1906	ev_set_priority (&fs_w, EV_MAXPRI);
		1907	ev_io_start (EV_A_ &fs_w);
		1908	}
		1909	}
		1910
		1911	void inline_size
		1912	infy_fork (EV_P)
		1913	{
		1914	int slot;
		1915
		1916	if (fs_fd < 0)
		1917	return;
		1918
		1919	close (fs_fd);
		1920	fs_fd = inotify_init ();
		1921
		1922	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1923	{
		1924	WL w_ = fs_hash [slot].head;
		1925	fs_hash [slot].head = 0;
		1926
		1927	while (w_)
		1928	{
		1929	ev_stat *w = (ev_stat *)w_;
		1930	w_ = w_->next; /* lets us add this watcher */
		1931
		1932	w->wd = -1;
		1933
		1934	if (fs_fd >= 0)
		1935	infy_add (EV_A_ w); /* re-add, no matter what */
		1936	else
		1937	ev_timer_start (EV_A_ &w->timer);
		1938	}
		1939
		1940	}
		1941	}
		1942
		1943	#endif
		1944
		1945	void
		1946	ev_stat_stat (EV_P_ ev_stat *w)
		1947	{
		1948	if (lstat (w->path, &w->attr) < 0)
		1949	w->attr.st_nlink = 0;
		1950	else if (!w->attr.st_nlink)
		1951	w->attr.st_nlink = 1;
		1952	}
		1953
		1954	static void noinline
		1955	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1956	{
		1957	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1958
		1959	/* we copy this here each the time so that */
		1960	/* prev has the old value when the callback gets invoked */
		1961	w->prev = w->attr;
		1962	ev_stat_stat (EV_A_ w);
		1963
		1964	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1965	if (
		1966	w->prev.st_dev != w->attr.st_dev
		1967	|| w->prev.st_ino != w->attr.st_ino
		1968	|| w->prev.st_mode != w->attr.st_mode
		1969	|| w->prev.st_nlink != w->attr.st_nlink
		1970	|| w->prev.st_uid != w->attr.st_uid
		1971	|| w->prev.st_gid != w->attr.st_gid
		1972	|| w->prev.st_rdev != w->attr.st_rdev
		1973	|| w->prev.st_size != w->attr.st_size
		1974	|| w->prev.st_atime != w->attr.st_atime
		1975	|| w->prev.st_mtime != w->attr.st_mtime
		1976	|| w->prev.st_ctime != w->attr.st_ctime
		1977	) {
		1978	#if EV_USE_INOTIFY
		1979	infy_del (EV_A_ w);
		1980	infy_add (EV_A_ w);
		1981	ev_stat_stat (EV_A_ w); /* avoid race... */
		1982	#endif
		1983
		1984	ev_feed_event (EV_A_ w, EV_STAT);
		1985	}
		1986	}
		1987
		1988	void
		1989	ev_stat_start (EV_P_ ev_stat *w)
		1990	{
		1991	if (expect_false (ev_is_active (w)))
		1992	return;
		1993
		1994	/* since we use memcmp, we need to clear any padding data etc. */
		1995	memset (&w->prev, 0, sizeof (ev_statdata));
		1996	memset (&w->attr, 0, sizeof (ev_statdata));
		1997
		1998	ev_stat_stat (EV_A_ w);
		1999
		2000	if (w->interval < MIN_STAT_INTERVAL)
		2001	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2002
		2003	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2004	ev_set_priority (&w->timer, ev_priority (w));
		2005
		2006	#if EV_USE_INOTIFY
		2007	infy_init (EV_A);
		2008
		2009	if (fs_fd >= 0)
		2010	infy_add (EV_A_ w);
		2011	else
		2012	#endif
		2013	ev_timer_start (EV_A_ &w->timer);
		2014
		2015	ev_start (EV_A_ (W)w, 1);
		2016	}
		2017
		2018	void
		2019	ev_stat_stop (EV_P_ ev_stat *w)
		2020	{
		2021	ev_clear_pending (EV_A_ (W)w);
		2022	if (expect_false (!ev_is_active (w)))
		2023	return;
		2024
		2025	#if EV_USE_INOTIFY
		2026	infy_del (EV_A_ w);
		2027	#endif
		2028	ev_timer_stop (EV_A_ &w->timer);
		2029
		2030	ev_stop (EV_A_ (W)w);
		2031	}
		2032	#endif
		2033
		2034	#if EV_IDLE_ENABLE
		2035	void
		2036	ev_idle_start (EV_P_ ev_idle *w)
		2037	{
		2038	if (expect_false (ev_is_active (w)))
		2039	return;
		2040
		2041	pri_adjust (EV_A_ (W)w);
		2042
		2043	{
		2044	int active = ++idlecnt [ABSPRI (w)];
		2045
		2046	++idleall;
		2047	ev_start (EV_A_ (W)w, active);
		2048
		2049	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2050	idles [ABSPRI (w)][active - 1] = w;
		2051	}
		2052	}
		2053
		2054	void
		2055	ev_idle_stop (EV_P_ ev_idle *w)
		2056	{
		2057	ev_clear_pending (EV_A_ (W)w);
		2058	if (expect_false (!ev_is_active (w)))
		2059	return;
		2060
		2061	{
		2062	int active = ((W)w)->active;
		2063
		2064	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2065	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2066
		2067	ev_stop (EV_A_ (W)w);
		2068	--idleall;
		2069	}
		2070	}
		2071	#endif
		2072
		2073	void
914	void evprepare_start (struct ev_prepare *w)	2074	ev_prepare_start (EV_P_ ev_prepare *w)
915	{	2075	{
916	if (ev_is_active (w))	2076	if (expect_false (ev_is_active (w)))
917	return;	2077	return;
918		2078
919	ev_start ((W)w, ++preparecnt);	2079	ev_start (EV_A_ (W)w, ++preparecnt);
920	array_needsize (prepares, preparemax, preparecnt, );	2080	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
921	prepares [preparecnt - 1] = w;	2081	prepares [preparecnt - 1] = w;
922	}	2082	}
923		2083
		2084	void
924	void evprepare_stop (struct ev_prepare *w)	2085	ev_prepare_stop (EV_P_ ev_prepare *w)
925	{	2086	{
926	ev_clear ((W)w);	2087	ev_clear_pending (EV_A_ (W)w);
927	if (ev_is_active (w))	2088	if (expect_false (!ev_is_active (w)))
928	return;	2089	return;
929		2090
		2091	{
		2092	int active = ((W)w)->active;
930	prepares [w->active - 1] = prepares [--preparecnt];	2093	prepares [active - 1] = prepares [--preparecnt];
		2094	((W)prepares [active - 1])->active = active;
		2095	}
		2096
931	ev_stop ((W)w);	2097	ev_stop (EV_A_ (W)w);
932	}	2098	}
933		2099
		2100	void
934	void evcheck_start (struct ev_check *w)	2101	ev_check_start (EV_P_ ev_check *w)
935	{	2102	{
936	if (ev_is_active (w))	2103	if (expect_false (ev_is_active (w)))
937	return;	2104	return;
938		2105
939	ev_start ((W)w, ++checkcnt);	2106	ev_start (EV_A_ (W)w, ++checkcnt);
940	array_needsize (checks, checkmax, checkcnt, );	2107	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
941	checks [checkcnt - 1] = w;	2108	checks [checkcnt - 1] = w;
942	}	2109	}
943		2110
		2111	void
944	void evcheck_stop (struct ev_check *w)	2112	ev_check_stop (EV_P_ ev_check *w)
945	{	2113	{
946	ev_clear ((W)w);	2114	ev_clear_pending (EV_A_ (W)w);
947	if (ev_is_active (w))	2115	if (expect_false (!ev_is_active (w)))
948	return;	2116	return;
949		2117
		2118	{
		2119	int active = ((W)w)->active;
950	checks [w->active - 1] = checks [--checkcnt];	2120	checks [active - 1] = checks [--checkcnt];
		2121	((W)checks [active - 1])->active = active;
		2122	}
		2123
951	ev_stop ((W)w);	2124	ev_stop (EV_A_ (W)w);
952	}	2125	}
953		2126
954	void evchild_start (struct ev_child *w)	2127	#if EV_EMBED_ENABLE
		2128	void noinline
		2129	ev_embed_sweep (EV_P_ ev_embed *w)
955	{	2130	{
		2131	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2132	}
		2133
		2134	static void
		2135	embed_cb (EV_P_ ev_io *io, int revents)
		2136	{
		2137	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2138
956	if (ev_is_active (w))	2139	if (ev_cb (w))
957	return;	2140	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2141	else
		2142	ev_embed_sweep (loop, w);
		2143	}
958		2144
		2145	void
		2146	ev_embed_start (EV_P_ ev_embed *w)
		2147	{
		2148	if (expect_false (ev_is_active (w)))
		2149	return;
		2150
		2151	{
		2152	struct ev_loop *loop = w->loop;
		2153	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2154	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2155	}
		2156
		2157	ev_set_priority (&w->io, ev_priority (w));
		2158	ev_io_start (EV_A_ &w->io);
		2159
959	ev_start ((W)w, 1);	2160	ev_start (EV_A_ (W)w, 1);
960	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
961	}	2161	}
962		2162
963	void evchild_stop (struct ev_child *w)	2163	void
		2164	ev_embed_stop (EV_P_ ev_embed *w)
964	{	2165	{
965	ev_clear ((W)w);	2166	ev_clear_pending (EV_A_ (W)w);
966	if (ev_is_active (w))	2167	if (expect_false (!ev_is_active (w)))
967	return;	2168	return;
968		2169
969	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2170	ev_io_stop (EV_A_ &w->io);
		2171
970	ev_stop ((W)w);	2172	ev_stop (EV_A_ (W)w);
971	}	2173	}
		2174	#endif
		2175
		2176	#if EV_FORK_ENABLE
		2177	void
		2178	ev_fork_start (EV_P_ ev_fork *w)
		2179	{
		2180	if (expect_false (ev_is_active (w)))
		2181	return;
		2182
		2183	ev_start (EV_A_ (W)w, ++forkcnt);
		2184	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2185	forks [forkcnt - 1] = w;
		2186	}
		2187
		2188	void
		2189	ev_fork_stop (EV_P_ ev_fork *w)
		2190	{
		2191	ev_clear_pending (EV_A_ (W)w);
		2192	if (expect_false (!ev_is_active (w)))
		2193	return;
		2194
		2195	{
		2196	int active = ((W)w)->active;
		2197	forks [active - 1] = forks [--forkcnt];
		2198	((W)forks [active - 1])->active = active;
		2199	}
		2200
		2201	ev_stop (EV_A_ (W)w);
		2202	}
		2203	#endif
972		2204
973	/*****************************************************************************/	2205	/*****************************************************************************/
974		2206
975	struct ev_once	2207	struct ev_once
976	{	2208	{
977	struct ev_io io;	2209	ev_io io;
978	struct ev_timer to;	2210	ev_timer to;
979	void (*cb)(int revents, void *arg);	2211	void (*cb)(int revents, void *arg);
980	void *arg;	2212	void *arg;
981	};	2213	};
982		2214
983	static void	2215	static void
984	once_cb (struct ev_once *once, int revents)	2216	once_cb (EV_P_ struct ev_once *once, int revents)
985	{	2217	{
986	void (*cb)(int revents, void *arg) = once->cb;	2218	void (*cb)(int revents, void *arg) = once->cb;
987	void *arg = once->arg;	2219	void *arg = once->arg;
988		2220
989	evio_stop (&once->io);	2221	ev_io_stop (EV_A_ &once->io);
990	evtimer_stop (&once->to);	2222	ev_timer_stop (EV_A_ &once->to);
991	free (once);	2223	ev_free (once);
992		2224
993	cb (revents, arg);	2225	cb (revents, arg);
994	}	2226	}
995		2227
996	static void	2228	static void
997	once_cb_io (struct ev_io *w, int revents)	2229	once_cb_io (EV_P_ ev_io *w, int revents)
998	{	2230	{
999	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2231	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1000	}	2232	}
1001		2233
1002	static void	2234	static void
1003	once_cb_to (struct ev_timer *w, int revents)	2235	once_cb_to (EV_P_ ev_timer *w, int revents)
1004	{	2236	{
1005	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2237	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1006	}	2238	}
1007		2239
1008	void	2240	void
1009	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2241	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1010	{	2242	{
1011	struct ev_once *once = malloc (sizeof (struct ev_once));	2243	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1012		2244
1013	if (!once)	2245	if (expect_false (!once))
1014	cb (EV_ERROR, arg);	2246	{
1015	else	2247	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
		2248	return;
1016	{	2249	}
		2250
1017	once->cb = cb;	2251	once->cb = cb;
1018	once->arg = arg;	2252	once->arg = arg;
1019		2253
1020	evw_init (&once->io, once_cb_io);	2254	ev_init (&once->io, once_cb_io);
1021
1022	if (fd >= 0)	2255	if (fd >= 0)
1023	{	2256	{
1024	evio_set (&once->io, fd, events);	2257	ev_io_set (&once->io, fd, events);
1025	evio_start (&once->io);	2258	ev_io_start (EV_A_ &once->io);
1026	}	2259	}
1027		2260
1028	evw_init (&once->to, once_cb_to);	2261	ev_init (&once->to, once_cb_to);
1029
1030	if (timeout >= 0.)	2262	if (timeout >= 0.)
1031	{	2263	{
1032	evtimer_set (&once->to, timeout, 0.);	2264	ev_timer_set (&once->to, timeout, 0.);
1033	evtimer_start (&once->to);	2265	ev_timer_start (EV_A_ &once->to);
1034	}
1035	}
1036	}
1037
1038	/*****************************************************************************/
1039
1040	#if 0
1041
1042	struct ev_io wio;
1043
1044	static void
1045	sin_cb (struct ev_io *w, int revents)
1046	{
1047	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1048	}
1049
1050	static void
1051	ocb (struct ev_timer *w, int revents)
1052	{
1053	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1054	evtimer_stop (w);
1055	evtimer_start (w);
1056	}
1057
1058	static void
1059	scb (struct ev_signal *w, int revents)
1060	{
1061	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1062	evio_stop (&wio);
1063	evio_start (&wio);
1064	}
1065
1066	static void
1067	gcb (struct ev_signal *w, int revents)
1068	{
1069	fprintf (stderr, "generic %x\n", revents);
1070
1071	}
1072
1073	int main (void)
1074	{
1075	ev_init (0);
1076
1077	evio_init (&wio, sin_cb, 0, EV_READ);
1078	evio_start (&wio);
1079
1080	struct ev_timer t[10000];
1081
1082	#if 0
1083	int i;
1084	for (i = 0; i < 10000; ++i)
1085	{	2266	}
1086	struct ev_timer *w = t + i;
1087	evw_init (w, ocb, i);
1088	evtimer_init_abs (w, ocb, drand48 (), 0.99775533);
1089	evtimer_start (w);
1090	if (drand48 () < 0.5)
1091	evtimer_stop (w);
1092	}
1093	#endif
1094
1095	struct ev_timer t1;
1096	evtimer_init (&t1, ocb, 5, 10);
1097	evtimer_start (&t1);
1098
1099	struct ev_signal sig;
1100	evsignal_init (&sig, scb, SIGQUIT);
1101	evsignal_start (&sig);
1102
1103	struct ev_check cw;
1104	evcheck_init (&cw, gcb);
1105	evcheck_start (&cw);
1106
1107	struct ev_idle iw;
1108	evidle_init (&iw, gcb);
1109	evidle_start (&iw);
1110
1111	ev_loop (0);
1112
1113	return 0;
1114	}	2267	}
1115		2268
		2269	#ifdef __cplusplus
		2270	}
1116	#endif	2271	#endif
1117		2272
1118
1119
1120

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