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Comparing libev/ev.c (file contents):
Revision 1.29 by root, Thu Nov 1 08:10:03 2007 UTC vs.
Revision 1.158 by root, Thu Nov 29 17:28:13 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	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
29	#if EV_USE_CONFIG_H	37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
30	# include "config.h"	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
31	#endif	107	#endif
32		108
33	#include <math.h>	109	#include <math.h>
34	#include <stdlib.h>	110	#include <stdlib.h>
35	#include <unistd.h>
36	#include <fcntl.h>	111	#include <fcntl.h>
37	#include <signal.h>
38	#include <stddef.h>	112	#include <stddef.h>
39		113
40	#include <stdio.h>	114	#include <stdio.h>
41		115
42	#include <assert.h>	116	#include <assert.h>
43	#include <errno.h>	117	#include <errno.h>
44	#include <sys/types.h>	118	#include <sys/types.h>
45	#include <sys/wait.h>
46	#include <sys/time.h>
47	#include <time.h>	119	#include <time.h>
48		120
		121	#include <signal.h>
		122
		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
		138	# endif
		139	#endif
		140
		141	/**/
		142
49	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
50	# ifdef CLOCK_MONOTONIC
51	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
52	# endif	145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
53	#endif	149	#endif
54		150
55	#ifndef EV_USE_SELECT	151	#ifndef EV_USE_SELECT
56	# define EV_USE_SELECT 1	152	# define EV_USE_SELECT 1
57	#endif	153	#endif
58		154
		155	#ifndef EV_USE_POLL
		156	# ifdef _WIN32
		157	# define EV_USE_POLL 0
		158	# else
		159	# define EV_USE_POLL 1
		160	# endif
		161	#endif
		162
59	#ifndef EV_USE_EPOLL	163	#ifndef EV_USE_EPOLL
60	# define EV_USE_EPOLL 0	164	# define EV_USE_EPOLL 0
61	#endif	165	#endif
62		166
		167	#ifndef EV_USE_KQUEUE
		168	# define EV_USE_KQUEUE 0
		169	#endif
		170
63	#ifndef EV_USE_REALTIME	171	#ifndef EV_USE_PORT
64	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	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
65	#endif	184	# endif
		185	#endif
		186
		187	#ifndef EV_INOTIFY_HASHSIZE
		188	# if EV_MINIMAL
		189	# define EV_INOTIFY_HASHSIZE 1
		190	# else
		191	# define EV_INOTIFY_HASHSIZE 16
		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	/**/
66		220
67	#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) */
68	#define MAX_BLOCKTIME 59.731	222	#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 */	223	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
70		224
71	#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
72		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)->priority - EV_MINPRI)
		247
		248	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		249	#define EMPTY2(a,b) /* used to suppress some warnings */
		250
73	typedef struct ev_watcher *W;	251	typedef ev_watcher *W;
74	typedef struct ev_watcher_list *WL;	252	typedef ev_watcher_list *WL;
75	typedef struct ev_watcher_time *WT;	253	typedef ev_watcher_time *WT;
76		254
77	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
78	ev_tstamp ev_now;	353	ev_tstamp ev_rt_now;
79	int ev_method;	354	#define VAR(name,decl) static decl;
		355	#include "ev_vars.h"
		356	#undef VAR
80		357
81	static int have_monotonic; /* runtime */	358	static int ev_default_loop_ptr;
82		359
83	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	360	#endif
84	static void (*method_modify)(int fd, int oev, int nev);
85	static void (*method_poll)(ev_tstamp timeout);
86		361
87	/*****************************************************************************/	362	/*****************************************************************************/
88		363
89	ev_tstamp	364	ev_tstamp
90	ev_time (void)	365	ev_time (void)
…		…
98	gettimeofday (&tv, 0);	373	gettimeofday (&tv, 0);
99	return tv.tv_sec + tv.tv_usec * 1e-6;	374	return tv.tv_sec + tv.tv_usec * 1e-6;
100	#endif	375	#endif
101	}	376	}
102		377
103	static ev_tstamp	378	ev_tstamp inline_size
104	get_clock (void)	379	get_clock (void)
105	{	380	{
106	#if EV_USE_MONOTONIC	381	#if EV_USE_MONOTONIC
107	if (have_monotonic)	382	if (expect_true (have_monotonic))
108	{	383	{
109	struct timespec ts;	384	struct timespec ts;
110	clock_gettime (CLOCK_MONOTONIC, &ts);	385	clock_gettime (CLOCK_MONOTONIC, &ts);
111	return ts.tv_sec + ts.tv_nsec * 1e-9;	386	return ts.tv_sec + ts.tv_nsec * 1e-9;
112	}	387	}
113	#endif	388	#endif
114		389
115	return ev_time ();	390	return ev_time ();
116	}	391	}
117		392
		393	#if EV_MULTIPLICITY
		394	ev_tstamp
		395	ev_now (EV_P)
		396	{
		397	return ev_rt_now;
		398	}
		399	#endif
		400
118	#define array_nextsize(n) (((n) << 1) | 4 & ~3)	401	#define array_roundsize(type,n) (((n) | 4) & ~3)
119	#define array_prevsize(n) (((n) >> 1) | 4 & ~3)
120		402
121	#define array_needsize(base,cur,cnt,init) \	403	#define array_needsize(type,base,cur,cnt,init) \
122	if ((cnt) > cur) \	404	if (expect_false ((cnt) > cur)) \
123	{ \	405	{ \
124	int newcnt = cur; \	406	int newcnt = cur; \
125	do \	407	do \
126	{ \	408	{ \
127	newcnt = array_nextsize (newcnt); \	409	newcnt = array_roundsize (type, newcnt << 1); \
128	} \	410	} \
129	while ((cnt) > newcnt); \	411	while ((cnt) > newcnt); \
130	\	412	\
131	base = realloc (base, sizeof (*base) * (newcnt)); \	413	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
132	init (base + cur, newcnt - cur); \	414	init (base + cur, newcnt - cur); \
133	cur = newcnt; \	415	cur = newcnt; \
134	}	416	}
		417
		418	#define array_slim(type,stem) \
		419	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		420	{ \
		421	stem ## max = array_roundsize (stem ## cnt >> 1); \
		422	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		423	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		424	}
		425
		426	#define array_free(stem, idx) \
		427	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
135		428
136	/*****************************************************************************/	429	/*****************************************************************************/
137		430
138	typedef struct	431	void noinline
		432	ev_feed_event (EV_P_ void *w, int revents)
139	{	433	{
140	struct ev_io *head;	434	W w_ = (W)w;
141	int events;
142	} ANFD;
143		435
144	static ANFD *anfds;	436	if (expect_false (w_->pending))
145	static int anfdmax;	437	{
		438	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
		439	return;
		440	}
146		441
147	static void	442	w_->pending = ++pendingcnt [ABSPRI (w_)];
		443	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
		444	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
		445	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
		446	}
		447
		448	void inline_size
		449	queue_events (EV_P_ W *events, int eventcnt, int type)
		450	{
		451	int i;
		452
		453	for (i = 0; i < eventcnt; ++i)
		454	ev_feed_event (EV_A_ events [i], type);
		455	}
		456
		457	/*****************************************************************************/
		458
		459	void inline_size
148	anfds_init (ANFD *base, int count)	460	anfds_init (ANFD *base, int count)
149	{	461	{
150	while (count--)	462	while (count--)
151	{	463	{
152	base->head = 0;	464	base->head = 0;
153	base->events = EV_NONE;	465	base->events = EV_NONE;
		466	base->reify = 0;
		467
154	++base;	468	++base;
155	}	469	}
156	}	470	}
157		471
158	typedef struct	472	void inline_speed
159	{
160	W w;
161	int events;
162	} ANPENDING;
163
164	static ANPENDING *pendings;
165	static int pendingmax, pendingcnt;
166
167	static void
168	event (W w, int events)
169	{
170	if (w->active)
171	{
172	w->pending = ++pendingcnt;
173	array_needsize (pendings, pendingmax, pendingcnt, );
174	pendings [pendingcnt - 1].w = w;
175	pendings [pendingcnt - 1].events = events;
176	}
177	}
178
179	static void
180	queue_events (W *events, int eventcnt, int type)
181	{
182	int i;
183
184	for (i = 0; i < eventcnt; ++i)
185	event (events [i], type);
186	}
187
188	static void
189	fd_event (int fd, int events)	473	fd_event (EV_P_ int fd, int revents)
190	{	474	{
191	ANFD *anfd = anfds + fd;	475	ANFD *anfd = anfds + fd;
192	struct ev_io *w;	476	ev_io *w;
193		477
194	for (w = anfd->head; w; w = w->next)	478	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
195	{	479	{
196	int ev = w->events & events;	480	int ev = w->events & revents;
197		481
198	if (ev)	482	if (ev)
199	event ((W)w, ev);	483	ev_feed_event (EV_A_ (W)w, ev);
200	}	484	}
201	}	485	}
202		486
203	/*****************************************************************************/	487	void
		488	ev_feed_fd_event (EV_P_ int fd, int revents)
		489	{
		490	fd_event (EV_A_ fd, revents);
		491	}
204		492
205	static int *fdchanges;	493	void inline_size
206	static int fdchangemax, fdchangecnt;	494	fd_reify (EV_P)
207
208	static void
209	fd_reify (void)
210	{	495	{
211	int i;	496	int i;
212		497
213	for (i = 0; i < fdchangecnt; ++i)	498	for (i = 0; i < fdchangecnt; ++i)
214	{	499	{
215	int fd = fdchanges [i];	500	int fd = fdchanges [i];
216	ANFD *anfd = anfds + fd;	501	ANFD *anfd = anfds + fd;
217	struct ev_io *w;	502	ev_io *w;
218		503
219	int events = 0;	504	int events = 0;
220		505
221	for (w = anfd->head; w; w = w->next)	506	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
222	events |= w->events;	507	events |= w->events;
223		508
224	anfd->events &= ~EV_REIFY;	509	#if EV_SELECT_IS_WINSOCKET
225		510	if (events)
226	if (anfd->events != events)
227	{	511	{
228	method_modify (fd, anfd->events, events);	512	unsigned long argp;
229	anfd->events = events;	513	anfd->handle = _get_osfhandle (fd);
		514	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
230	}	515	}
		516	#endif
		517
		518	anfd->reify = 0;
		519
		520	backend_modify (EV_A_ fd, anfd->events, events);
		521	anfd->events = events;
231	}	522	}
232		523
233	fdchangecnt = 0;	524	fdchangecnt = 0;
234	}	525	}
235		526
236	static void	527	void inline_size
237	fd_change (int fd)	528	fd_change (EV_P_ int fd)
238	{	529	{
239	if (anfds [fd].events & EV_REIFY || fdchangecnt < 0)	530	if (expect_false (anfds [fd].reify))
240	return;	531	return;
241		532
242	anfds [fd].events |= EV_REIFY;	533	anfds [fd].reify = 1;
243		534
244	++fdchangecnt;	535	++fdchangecnt;
245	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	536	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
246	fdchanges [fdchangecnt - 1] = fd;	537	fdchanges [fdchangecnt - 1] = fd;
247	}	538	}
248		539
		540	void inline_speed
		541	fd_kill (EV_P_ int fd)
		542	{
		543	ev_io *w;
		544
		545	while ((w = (ev_io *)anfds [fd].head))
		546	{
		547	ev_io_stop (EV_A_ w);
		548	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		549	}
		550	}
		551
		552	int inline_size
		553	fd_valid (int fd)
		554	{
		555	#ifdef _WIN32
		556	return _get_osfhandle (fd) != -1;
		557	#else
		558	return fcntl (fd, F_GETFD) != -1;
		559	#endif
		560	}
		561
249	/* called on EBADF to verify fds */	562	/* called on EBADF to verify fds */
250	static void	563	static void noinline
251	fd_recheck (void)	564	fd_ebadf (EV_P)
252	{	565	{
253	int fd;	566	int fd;
254		567
255	for (fd = 0; fd < anfdmax; ++fd)	568	for (fd = 0; fd < anfdmax; ++fd)
256	if (anfds [fd].events)	569	if (anfds [fd].events)
257	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	570	if (!fd_valid (fd) == -1 && errno == EBADF)
258	while (anfds [fd].head)	571	fd_kill (EV_A_ fd);
		572	}
		573
		574	/* called on ENOMEM in select/poll to kill some fds and retry */
		575	static void noinline
		576	fd_enomem (EV_P)
		577	{
		578	int fd;
		579
		580	for (fd = anfdmax; fd--; )
		581	if (anfds [fd].events)
259	{	582	{
260	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT);	583	fd_kill (EV_A_ fd);
261	ev_io_stop (anfds [fd].head);	584	return;
262	}	585	}
		586	}
		587
		588	/* usually called after fork if backend needs to re-arm all fds from scratch */
		589	static void noinline
		590	fd_rearm_all (EV_P)
		591	{
		592	int fd;
		593
		594	for (fd = 0; fd < anfdmax; ++fd)
		595	if (anfds [fd].events)
		596	{
		597	anfds [fd].events = 0;
		598	fd_change (EV_A_ fd);
		599	}
263	}	600	}
264		601
265	/*****************************************************************************/	602	/*****************************************************************************/
266		603
267	static struct ev_timer **timers;	604	void inline_speed
268	static int timermax, timercnt;
269
270	static struct ev_periodic **periodics;
271	static int periodicmax, periodiccnt;
272
273	static void
274	upheap (WT *timers, int k)	605	upheap (WT *heap, int k)
275	{	606	{
276	WT w = timers [k];	607	WT w = heap [k];
277		608
278	while (k && timers [k >> 1]->at > w->at)	609	while (k && heap [k >> 1]->at > w->at)
279	{	610	{
280	timers [k] = timers [k >> 1];	611	heap [k] = heap [k >> 1];
281	timers [k]->active = k + 1;	612	((W)heap [k])->active = k + 1;
282	k >>= 1;	613	k >>= 1;
283	}	614	}
284		615
285	timers [k] = w;	616	heap [k] = w;
286	timers [k]->active = k + 1;	617	((W)heap [k])->active = k + 1;
287		618
288	}	619	}
289		620
290	static void	621	void inline_speed
291	downheap (WT *timers, int N, int k)	622	downheap (WT *heap, int N, int k)
292	{	623	{
293	WT w = timers [k];	624	WT w = heap [k];
294		625
295	while (k < (N >> 1))	626	while (k < (N >> 1))
296	{	627	{
297	int j = k << 1;	628	int j = k << 1;
298		629
299	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	630	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
300	++j;	631	++j;
301		632
302	if (w->at <= timers [j]->at)	633	if (w->at <= heap [j]->at)
303	break;	634	break;
304		635
305	timers [k] = timers [j];	636	heap [k] = heap [j];
306	timers [k]->active = k + 1;	637	((W)heap [k])->active = k + 1;
307	k = j;	638	k = j;
308	}	639	}
309		640
310	timers [k] = w;	641	heap [k] = w;
311	timers [k]->active = k + 1;	642	((W)heap [k])->active = k + 1;
		643	}
		644
		645	void inline_size
		646	adjustheap (WT *heap, int N, int k)
		647	{
		648	upheap (heap, k);
		649	downheap (heap, N, k);
312	}	650	}
313		651
314	/*****************************************************************************/	652	/*****************************************************************************/
315		653
316	typedef struct	654	typedef struct
317	{	655	{
318	struct ev_signal *head;	656	WL head;
319	sig_atomic_t gotsig;	657	sig_atomic_t volatile gotsig;
320	} ANSIG;	658	} ANSIG;
321		659
322	static ANSIG *signals;	660	static ANSIG *signals;
323	static int signalmax;	661	static int signalmax;
324		662
325	static int sigpipe [2];	663	static int sigpipe [2];
326	static sig_atomic_t gotsig;	664	static sig_atomic_t volatile gotsig;
327	static struct ev_io sigev;	665	static ev_io sigev;
328		666
329	static void	667	void inline_size
330	signals_init (ANSIG *base, int count)	668	signals_init (ANSIG *base, int count)
331	{	669	{
332	while (count--)	670	while (count--)
333	{	671	{
334	base->head = 0;	672	base->head = 0;
335	base->gotsig = 0;	673	base->gotsig = 0;
		674
336	++base;	675	++base;
337	}	676	}
338	}	677	}
339		678
340	static void	679	static void
341	sighandler (int signum)	680	sighandler (int signum)
342	{	681	{
		682	#if _WIN32
		683	signal (signum, sighandler);
		684	#endif
		685
343	signals [signum - 1].gotsig = 1;	686	signals [signum - 1].gotsig = 1;
344		687
345	if (!gotsig)	688	if (!gotsig)
346	{	689	{
		690	int old_errno = errno;
347	gotsig = 1;	691	gotsig = 1;
348	write (sigpipe [1], &gotsig, 1);	692	write (sigpipe [1], &signum, 1);
		693	errno = old_errno;
349	}	694	}
		695	}
		696
		697	void noinline
		698	ev_feed_signal_event (EV_P_ int signum)
		699	{
		700	WL w;
		701
		702	#if EV_MULTIPLICITY
		703	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		704	#endif
		705
		706	--signum;
		707
		708	if (signum < 0 || signum >= signalmax)
		709	return;
		710
		711	signals [signum].gotsig = 0;
		712
		713	for (w = signals [signum].head; w; w = w->next)
		714	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
350	}	715	}
351		716
352	static void	717	static void
353	sigcb (struct ev_io *iow, int revents)	718	sigcb (EV_P_ ev_io *iow, int revents)
354	{	719	{
355	struct ev_signal *w;
356	int sig;	720	int signum;
357		721
		722	read (sigpipe [0], &revents, 1);
358	gotsig = 0;	723	gotsig = 0;
359	read (sigpipe [0], &revents, 1);
360		724
361	for (sig = signalmax; sig--; )	725	for (signum = signalmax; signum--; )
362	if (signals [sig].gotsig)	726	if (signals [signum].gotsig)
		727	ev_feed_signal_event (EV_A_ signum + 1);
		728	}
		729
		730	void inline_size
		731	fd_intern (int fd)
		732	{
		733	#ifdef _WIN32
		734	int arg = 1;
		735	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		736	#else
		737	fcntl (fd, F_SETFD, FD_CLOEXEC);
		738	fcntl (fd, F_SETFL, O_NONBLOCK);
		739	#endif
		740	}
		741
		742	static void noinline
		743	siginit (EV_P)
		744	{
		745	fd_intern (sigpipe [0]);
		746	fd_intern (sigpipe [1]);
		747
		748	ev_io_set (&sigev, sigpipe [0], EV_READ);
		749	ev_io_start (EV_A_ &sigev);
		750	ev_unref (EV_A); /* child watcher should not keep loop alive */
		751	}
		752
		753	/*****************************************************************************/
		754
		755	static ev_child *childs [EV_PID_HASHSIZE];
		756
		757	#ifndef _WIN32
		758
		759	static ev_signal childev;
		760
		761	void inline_speed
		762	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		763	{
		764	ev_child *w;
		765
		766	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		767	if (w->pid == pid || !w->pid)
363	{	768	{
364	signals [sig].gotsig = 0;	769	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
365		770	w->rpid = pid;
366	for (w = signals [sig].head; w; w = w->next)	771	w->rstatus = status;
367	event ((W)w, EV_SIGNAL);	772	ev_feed_event (EV_A_ (W)w, EV_CHILD);
368	}	773	}
369	}	774	}
370
371	static void
372	siginit (void)
373	{
374	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
375	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
376
377	/* rather than sort out wether we really need nb, set it */
378	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
379	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
380
381	ev_io_set (&sigev, sigpipe [0], EV_READ);
382	ev_io_start (&sigev);
383	}
384
385	/*****************************************************************************/
386
387	static struct ev_idle **idles;
388	static int idlemax, idlecnt;
389
390	static struct ev_prepare **prepares;
391	static int preparemax, preparecnt;
392
393	static struct ev_check **checks;
394	static int checkmax, checkcnt;
395
396	/*****************************************************************************/
397
398	static struct ev_child *childs [PID_HASHSIZE];
399	static struct ev_signal childev;
400		775
401	#ifndef WCONTINUED	776	#ifndef WCONTINUED
402	# define WCONTINUED 0	777	# define WCONTINUED 0
403	#endif	778	#endif
404		779
405	static void	780	static void
406	childcb (struct ev_signal *sw, int revents)	781	childcb (EV_P_ ev_signal *sw, int revents)
407	{	782	{
408	struct ev_child *w;
409	int pid, status;	783	int pid, status;
410		784
		785	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
411	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	786	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
412	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	787	if (!WCONTINUED
413	if (w->pid == pid || w->pid == -1)	788	|| errno != EINVAL
414	{	789	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
415	w->status = status;	790	return;
416	event ((W)w, EV_CHILD);	791
417	}	792	/* make sure we are called again until all childs have been reaped */
		793	/* we need to do it this way so that the callback gets called before we continue */
		794	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		795
		796	child_reap (EV_A_ sw, pid, pid, status);
		797	if (EV_PID_HASHSIZE > 1)
		798	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
418	}	799	}
		800
		801	#endif
419		802
420	/*****************************************************************************/	803	/*****************************************************************************/
421		804
		805	#if EV_USE_PORT
		806	# include "ev_port.c"
		807	#endif
		808	#if EV_USE_KQUEUE
		809	# include "ev_kqueue.c"
		810	#endif
422	#if EV_USE_EPOLL	811	#if EV_USE_EPOLL
423	# include "ev_epoll.c"	812	# include "ev_epoll.c"
424	#endif	813	#endif
		814	#if EV_USE_POLL
		815	# include "ev_poll.c"
		816	#endif
425	#if EV_USE_SELECT	817	#if EV_USE_SELECT
426	# include "ev_select.c"	818	# include "ev_select.c"
427	#endif	819	#endif
428		820
429	int	821	int
…		…
436	ev_version_minor (void)	828	ev_version_minor (void)
437	{	829	{
438	return EV_VERSION_MINOR;	830	return EV_VERSION_MINOR;
439	}	831	}
440		832
441	int ev_init (int flags)	833	/* return true if we are running with elevated privileges and should ignore env variables */
		834	int inline_size
		835	enable_secure (void)
442	{	836	{
443	if (!ev_method)	837	#ifdef _WIN32
		838	return 0;
		839	#else
		840	return getuid () != geteuid ()
		841	|| getgid () != getegid ();
		842	#endif
		843	}
		844
		845	unsigned int
		846	ev_supported_backends (void)
		847	{
		848	unsigned int flags = 0;
		849
		850	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		851	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		852	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		853	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		854	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		855
		856	return flags;
		857	}
		858
		859	unsigned int
		860	ev_recommended_backends (void)
		861	{
		862	unsigned int flags = ev_supported_backends ();
		863
		864	#ifndef __NetBSD__
		865	/* kqueue is borked on everything but netbsd apparently */
		866	/* it usually doesn't work correctly on anything but sockets and pipes */
		867	flags &= ~EVBACKEND_KQUEUE;
		868	#endif
		869	#ifdef __APPLE__
		870	// flags &= ~EVBACKEND_KQUEUE; for documentation
		871	flags &= ~EVBACKEND_POLL;
		872	#endif
		873
		874	return flags;
		875	}
		876
		877	unsigned int
		878	ev_embeddable_backends (void)
		879	{
		880	return EVBACKEND_EPOLL
		881	| EVBACKEND_KQUEUE
		882	| EVBACKEND_PORT;
		883	}
		884
		885	unsigned int
		886	ev_backend (EV_P)
		887	{
		888	return backend;
		889	}
		890
		891	static void noinline
		892	loop_init (EV_P_ unsigned int flags)
		893	{
		894	if (!backend)
444	{	895	{
445	#if EV_USE_MONOTONIC	896	#if EV_USE_MONOTONIC
446	{	897	{
447	struct timespec ts;	898	struct timespec ts;
448	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	899	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
449	have_monotonic = 1;	900	have_monotonic = 1;
450	}	901	}
451	#endif	902	#endif
452		903
453	ev_now = ev_time ();	904	ev_rt_now = ev_time ();
454	now = get_clock ();	905	mn_now = get_clock ();
		906	now_floor = mn_now;
455	diff = ev_now - now;	907	rtmn_diff = ev_rt_now - mn_now;
456		908
457	if (pipe (sigpipe))	909	/* pid check not overridable via env */
458	return 0;	910	#ifndef _WIN32
		911	if (flags & EVFLAG_FORKCHECK)
		912	curpid = getpid ();
		913	#endif
459		914
460	ev_method = EVMETHOD_NONE;	915	if (!(flags & EVFLAG_NOENV)
		916	&& !enable_secure ()
		917	&& getenv ("LIBEV_FLAGS"))
		918	flags = atoi (getenv ("LIBEV_FLAGS"));
		919
		920	if (!(flags & 0x0000ffffUL))
		921	flags |= ev_recommended_backends ();
		922
		923	backend = 0;
		924	backend_fd = -1;
		925	#if EV_USE_INOTIFY
		926	fs_fd = -2;
		927	#endif
		928
		929	#if EV_USE_PORT
		930	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		931	#endif
		932	#if EV_USE_KQUEUE
		933	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		934	#endif
461	#if EV_USE_EPOLL	935	#if EV_USE_EPOLL
462	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	936	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		937	#endif
		938	#if EV_USE_POLL
		939	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
463	#endif	940	#endif
464	#if EV_USE_SELECT	941	#if EV_USE_SELECT
465	if (ev_method == EVMETHOD_NONE) select_init (flags);	942	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
466	#endif	943	#endif
467		944
468	if (ev_method)	945	ev_init (&sigev, sigcb);
		946	ev_set_priority (&sigev, EV_MAXPRI);
		947	}
		948	}
		949
		950	static void noinline
		951	loop_destroy (EV_P)
		952	{
		953	int i;
		954
		955	#if EV_USE_INOTIFY
		956	if (fs_fd >= 0)
		957	close (fs_fd);
		958	#endif
		959
		960	if (backend_fd >= 0)
		961	close (backend_fd);
		962
		963	#if EV_USE_PORT
		964	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		965	#endif
		966	#if EV_USE_KQUEUE
		967	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		968	#endif
		969	#if EV_USE_EPOLL
		970	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		971	#endif
		972	#if EV_USE_POLL
		973	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		974	#endif
		975	#if EV_USE_SELECT
		976	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		977	#endif
		978
		979	for (i = NUMPRI; i--; )
		980	array_free (pending, [i]);
		981
		982	/* have to use the microsoft-never-gets-it-right macro */
		983	array_free (fdchange, EMPTY0);
		984	array_free (timer, EMPTY0);
		985	#if EV_PERIODIC_ENABLE
		986	array_free (periodic, EMPTY0);
		987	#endif
		988	array_free (idle, EMPTY0);
		989	array_free (prepare, EMPTY0);
		990	array_free (check, EMPTY0);
		991
		992	backend = 0;
		993	}
		994
		995	void inline_size infy_fork (EV_P);
		996
		997	void inline_size
		998	loop_fork (EV_P)
		999	{
		1000	#if EV_USE_PORT
		1001	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1002	#endif
		1003	#if EV_USE_KQUEUE
		1004	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1005	#endif
		1006	#if EV_USE_EPOLL
		1007	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1008	#endif
		1009	#if EV_USE_INOTIFY
		1010	infy_fork (EV_A);
		1011	#endif
		1012
		1013	if (ev_is_active (&sigev))
		1014	{
		1015	/* default loop */
		1016
		1017	ev_ref (EV_A);
		1018	ev_io_stop (EV_A_ &sigev);
		1019	close (sigpipe [0]);
		1020	close (sigpipe [1]);
		1021
		1022	while (pipe (sigpipe))
		1023	syserr ("(libev) error creating pipe");
		1024
		1025	siginit (EV_A);
		1026	}
		1027
		1028	postfork = 0;
		1029	}
		1030
		1031	#if EV_MULTIPLICITY
		1032	struct ev_loop *
		1033	ev_loop_new (unsigned int flags)
		1034	{
		1035	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1036
		1037	memset (loop, 0, sizeof (struct ev_loop));
		1038
		1039	loop_init (EV_A_ flags);
		1040
		1041	if (ev_backend (EV_A))
		1042	return loop;
		1043
		1044	return 0;
		1045	}
		1046
		1047	void
		1048	ev_loop_destroy (EV_P)
		1049	{
		1050	loop_destroy (EV_A);
		1051	ev_free (loop);
		1052	}
		1053
		1054	void
		1055	ev_loop_fork (EV_P)
		1056	{
		1057	postfork = 1;
		1058	}
		1059
		1060	#endif
		1061
		1062	#if EV_MULTIPLICITY
		1063	struct ev_loop *
		1064	ev_default_loop_init (unsigned int flags)
		1065	#else
		1066	int
		1067	ev_default_loop (unsigned int flags)
		1068	#endif
		1069	{
		1070	if (sigpipe [0] == sigpipe [1])
		1071	if (pipe (sigpipe))
		1072	return 0;
		1073
		1074	if (!ev_default_loop_ptr)
		1075	{
		1076	#if EV_MULTIPLICITY
		1077	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1078	#else
		1079	ev_default_loop_ptr = 1;
		1080	#endif
		1081
		1082	loop_init (EV_A_ flags);
		1083
		1084	if (ev_backend (EV_A))
469	{	1085	{
470	ev_watcher_init (&sigev, sigcb);
471	siginit ();	1086	siginit (EV_A);
472		1087
		1088	#ifndef _WIN32
473	ev_signal_init (&childev, childcb, SIGCHLD);	1089	ev_signal_init (&childev, childcb, SIGCHLD);
		1090	ev_set_priority (&childev, EV_MAXPRI);
474	ev_signal_start (&childev);	1091	ev_signal_start (EV_A_ &childev);
		1092	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1093	#endif
475	}	1094	}
		1095	else
		1096	ev_default_loop_ptr = 0;
476	}	1097	}
477		1098
478	return ev_method;	1099	return ev_default_loop_ptr;
		1100	}
		1101
		1102	void
		1103	ev_default_destroy (void)
		1104	{
		1105	#if EV_MULTIPLICITY
		1106	struct ev_loop *loop = ev_default_loop_ptr;
		1107	#endif
		1108
		1109	#ifndef _WIN32
		1110	ev_ref (EV_A); /* child watcher */
		1111	ev_signal_stop (EV_A_ &childev);
		1112	#endif
		1113
		1114	ev_ref (EV_A); /* signal watcher */
		1115	ev_io_stop (EV_A_ &sigev);
		1116
		1117	close (sigpipe [0]); sigpipe [0] = 0;
		1118	close (sigpipe [1]); sigpipe [1] = 0;
		1119
		1120	loop_destroy (EV_A);
		1121	}
		1122
		1123	void
		1124	ev_default_fork (void)
		1125	{
		1126	#if EV_MULTIPLICITY
		1127	struct ev_loop *loop = ev_default_loop_ptr;
		1128	#endif
		1129
		1130	if (backend)
		1131	postfork = 1;
479	}	1132	}
480		1133
481	/*****************************************************************************/	1134	/*****************************************************************************/
482		1135
483	void	1136	int inline_size
484	ev_prefork (void)	1137	any_pending (EV_P)
485	{	1138	{
486	/* nop */	1139	int pri;
487	}
488		1140
489	void	1141	for (pri = NUMPRI; pri--; )
490	ev_postfork_parent (void)	1142	if (pendingcnt [pri])
491	{	1143	return 1;
492	/* nop */
493	}
494		1144
495	void	1145	return 0;
496	ev_postfork_child (void)
497	{
498	#if EV_USE_EPOLL
499	if (ev_method == EVMETHOD_EPOLL)
500	epoll_postfork_child ();
501	#endif
502
503	ev_io_stop (&sigev);
504	close (sigpipe [0]);
505	close (sigpipe [1]);
506	pipe (sigpipe);
507	siginit ();
508	}	1146	}
509		1147
510	/*****************************************************************************/	1148	void inline_speed
511
512	static void
513	call_pending (void)	1149	call_pending (EV_P)
514	{	1150	{
		1151	int pri;
		1152
		1153	for (pri = NUMPRI; pri--; )
515	while (pendingcnt)	1154	while (pendingcnt [pri])
516	{	1155	{
517	ANPENDING *p = pendings + --pendingcnt;	1156	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
518		1157
519	if (p->w)	1158	if (expect_true (p->w))
520	{	1159	{
		1160	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1161
521	p->w->pending = 0;	1162	p->w->pending = 0;
522	p->w->cb (p->w, p->events);	1163	EV_CB_INVOKE (p->w, p->events);
523	}	1164	}
524	}	1165	}
525	}	1166	}
526		1167
527	static void	1168	void inline_size
528	timers_reify (void)	1169	timers_reify (EV_P)
529	{	1170	{
530	while (timercnt && timers [0]->at <= now)	1171	while (timercnt && ((WT)timers [0])->at <= mn_now)
531	{	1172	{
532	struct ev_timer *w = timers [0];	1173	ev_timer *w = timers [0];
533		1174
534	event ((W)w, EV_TIMEOUT);	1175	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
535		1176
536	/* first reschedule or stop timer */	1177	/* first reschedule or stop timer */
537	if (w->repeat)	1178	if (w->repeat)
538	{	1179	{
		1180	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1181
539	w->at = now + w->repeat;	1182	((WT)w)->at += w->repeat;
540	assert (("timer timeout in the past, negative repeat?", w->at > now));	1183	if (((WT)w)->at < mn_now)
		1184	((WT)w)->at = mn_now;
		1185
541	downheap ((WT *)timers, timercnt, 0);	1186	downheap ((WT *)timers, timercnt, 0);
542	}	1187	}
543	else	1188	else
544	ev_timer_stop (w); /* nonrepeating: stop timer */	1189	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
545	}
546	}
547		1190
548	static void	1191	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
		1192	}
		1193	}
		1194
		1195	#if EV_PERIODIC_ENABLE
		1196	void inline_size
549	periodics_reify (void)	1197	periodics_reify (EV_P)
550	{	1198	{
551	while (periodiccnt && periodics [0]->at <= ev_now)	1199	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
552	{	1200	{
553	struct ev_periodic *w = periodics [0];	1201	ev_periodic *w = periodics [0];
		1202
		1203	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
554		1204
555	/* first reschedule or stop timer */	1205	/* first reschedule or stop timer */
556	if (w->interval)	1206	if (w->reschedule_cb)
557	{	1207	{
		1208	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1209	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1210	downheap ((WT *)periodics, periodiccnt, 0);
		1211	}
		1212	else if (w->interval)
		1213	{
558	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1214	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
559	assert (("periodic timeout in the past, negative interval?", w->at > ev_now));	1215	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
560	downheap ((WT *)periodics, periodiccnt, 0);	1216	downheap ((WT *)periodics, periodiccnt, 0);
561	}	1217	}
562	else	1218	else
563	ev_periodic_stop (w); /* nonrepeating: stop timer */	1219	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
564		1220
565	event ((W)w, EV_TIMEOUT);	1221	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
566	}	1222	}
567	}	1223	}
568		1224
569	static void	1225	static void noinline
570	periodics_reschedule (ev_tstamp diff)	1226	periodics_reschedule (EV_P)
571	{	1227	{
572	int i;	1228	int i;
573		1229
574	/* adjust periodics after time jump */	1230	/* adjust periodics after time jump */
575	for (i = 0; i < periodiccnt; ++i)	1231	for (i = 0; i < periodiccnt; ++i)
576	{	1232	{
577	struct ev_periodic *w = periodics [i];	1233	ev_periodic *w = periodics [i];
578		1234
		1235	if (w->reschedule_cb)
		1236	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
579	if (w->interval)	1237	else if (w->interval)
		1238	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1239	}
		1240
		1241	/* now rebuild the heap */
		1242	for (i = periodiccnt >> 1; i--; )
		1243	downheap ((WT *)periodics, periodiccnt, i);
		1244	}
		1245	#endif
		1246
		1247	int inline_size
		1248	time_update_monotonic (EV_P)
		1249	{
		1250	mn_now = get_clock ();
		1251
		1252	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1253	{
		1254	ev_rt_now = rtmn_diff + mn_now;
		1255	return 0;
		1256	}
		1257	else
		1258	{
		1259	now_floor = mn_now;
		1260	ev_rt_now = ev_time ();
		1261	return 1;
		1262	}
		1263	}
		1264
		1265	void inline_size
		1266	time_update (EV_P)
		1267	{
		1268	int i;
		1269
		1270	#if EV_USE_MONOTONIC
		1271	if (expect_true (have_monotonic))
		1272	{
		1273	if (time_update_monotonic (EV_A))
580	{	1274	{
581	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1275	ev_tstamp odiff = rtmn_diff;
582		1276
583	if (fabs (diff) >= 1e-4)	1277	/* loop a few times, before making important decisions.
		1278	* on the choice of "4": one iteration isn't enough,
		1279	* in case we get preempted during the calls to
		1280	* ev_time and get_clock. a second call is almost guaranteed
		1281	* to succeed in that case, though. and looping a few more times
		1282	* doesn't hurt either as we only do this on time-jumps or
		1283	* in the unlikely event of having been preempted here.
		1284	*/
		1285	for (i = 4; --i; )
584	{	1286	{
585	ev_periodic_stop (w);	1287	rtmn_diff = ev_rt_now - mn_now;
586	ev_periodic_start (w);
587		1288
588	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1289	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1290	return; /* all is well */
		1291
		1292	ev_rt_now = ev_time ();
		1293	mn_now = get_clock ();
		1294	now_floor = mn_now;
589	}	1295	}
		1296
		1297	# if EV_PERIODIC_ENABLE
		1298	periodics_reschedule (EV_A);
		1299	# endif
		1300	/* no timer adjustment, as the monotonic clock doesn't jump */
		1301	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
590	}	1302	}
591	}	1303	}
592	}	1304	else
593		1305	#endif
594	static void	1306	{
595	time_update (void)
596	{
597	int i;
598
599	ev_now = ev_time ();	1307	ev_rt_now = ev_time ();
600		1308
601	if (have_monotonic)	1309	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
602	{
603	ev_tstamp odiff = diff;
604
605	for (i = 4; --i; ) /* loop a few times, before making important decisions */
606	{	1310	{
607	now = get_clock ();	1311	#if EV_PERIODIC_ENABLE
608	diff = ev_now - now;	1312	periodics_reschedule (EV_A);
		1313	#endif
609		1314
610	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1315	/* adjust timers. this is easy, as the offset is the same for all of them */
611	return; /* all is well */	1316	for (i = 0; i < timercnt; ++i)
612		1317	((WT)timers [i])->at += ev_rt_now - mn_now;
613	ev_now = ev_time ();
614	}	1318	}
615		1319
616	periodics_reschedule (diff - odiff);	1320	mn_now = ev_rt_now;
617	/* no timer adjustment, as the monotonic clock doesn't jump */
618	}
619	else
620	{	1321	}
621	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	1322	}
		1323
		1324	void
		1325	ev_ref (EV_P)
		1326	{
		1327	++activecnt;
		1328	}
		1329
		1330	void
		1331	ev_unref (EV_P)
		1332	{
		1333	--activecnt;
		1334	}
		1335
		1336	static int loop_done;
		1337
		1338	void
		1339	ev_loop (EV_P_ int flags)
		1340	{
		1341	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1342	? EVUNLOOP_ONE
		1343	: EVUNLOOP_CANCEL;
		1344
		1345	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
		1346
		1347	while (activecnt)
		1348	{
		1349	#ifndef _WIN32
		1350	if (expect_false (curpid)) /* penalise the forking check even more */
		1351	if (expect_false (getpid () != curpid))
		1352	{
		1353	curpid = getpid ();
		1354	postfork = 1;
		1355	}
		1356	#endif
		1357
		1358	#if EV_FORK_ENABLE
		1359	/* we might have forked, so queue fork handlers */
		1360	if (expect_false (postfork))
		1361	if (forkcnt)
		1362	{
		1363	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1364	call_pending (EV_A);
		1365	}
		1366	#endif
		1367
		1368	/* queue check watchers (and execute them) */
		1369	if (expect_false (preparecnt))
622	{	1370	{
623	periodics_reschedule (ev_now - now);	1371	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
624		1372	call_pending (EV_A);
625	/* adjust timers. this is easy, as the offset is the same for all */
626	for (i = 0; i < timercnt; ++i)
627	timers [i]->at += diff;
628	}	1373	}
629		1374
630	now = ev_now;	1375	/* we might have forked, so reify kernel state if necessary */
631	}	1376	if (expect_false (postfork))
632	}	1377	loop_fork (EV_A);
633
634	int ev_loop_done;
635
636	void ev_loop (int flags)
637	{
638	double block;
639	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
640
641	do
642	{
643	/* queue check watchers (and execute them) */
644	if (preparecnt)
645	{
646	queue_events ((W *)prepares, preparecnt, EV_PREPARE);
647	call_pending ();
648	}
649		1378
650	/* update fd-related kernel structures */	1379	/* update fd-related kernel structures */
651	fd_reify ();	1380	fd_reify (EV_A);
652		1381
653	/* calculate blocking time */	1382	/* calculate blocking time */
		1383	{
		1384	ev_tstamp block;
654		1385
655	/* we only need this for !monotonic clockor timers, but as we basically
656	always have timers, we just calculate it always */
657	ev_now = ev_time ();
658
659	if (flags & EVLOOP_NONBLOCK || idlecnt)	1386	if (flags & EVLOOP_NONBLOCK || idlecnt)
660	block = 0.;	1387	block = 0.; /* do not block at all */
661	else	1388	else
662	{	1389	{
		1390	/* update time to cancel out callback processing overhead */
		1391	#if EV_USE_MONOTONIC
		1392	if (expect_true (have_monotonic))
		1393	time_update_monotonic (EV_A);
		1394	else
		1395	#endif
		1396	{
		1397	ev_rt_now = ev_time ();
		1398	mn_now = ev_rt_now;
		1399	}
		1400
663	block = MAX_BLOCKTIME;	1401	block = MAX_BLOCKTIME;
664		1402
665	if (timercnt)	1403	if (timercnt)
666	{	1404	{
667	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1405	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
668	if (block > to) block = to;	1406	if (block > to) block = to;
669	}	1407	}
670		1408
		1409	#if EV_PERIODIC_ENABLE
671	if (periodiccnt)	1410	if (periodiccnt)
672	{	1411	{
673	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1412	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
674	if (block > to) block = to;	1413	if (block > to) block = to;
675	}	1414	}
		1415	#endif
676		1416
677	if (block < 0.) block = 0.;	1417	if (expect_false (block < 0.)) block = 0.;
678	}	1418	}
679		1419
680	method_poll (block);	1420	backend_poll (EV_A_ block);
		1421	}
681		1422
682	/* update ev_now, do magic */	1423	/* update ev_rt_now, do magic */
683	time_update ();	1424	time_update (EV_A);
684		1425
685	/* queue pending timers and reschedule them */	1426	/* queue pending timers and reschedule them */
686	timers_reify (); /* relative timers called last */	1427	timers_reify (EV_A); /* relative timers called last */
		1428	#if EV_PERIODIC_ENABLE
687	periodics_reify (); /* absolute timers called first */	1429	periodics_reify (EV_A); /* absolute timers called first */
		1430	#endif
688		1431
689	/* queue idle watchers unless io or timers are pending */	1432	/* queue idle watchers unless other events are pending */
690	if (!pendingcnt)	1433	if (idlecnt && !any_pending (EV_A))
691	queue_events ((W *)idles, idlecnt, EV_IDLE);	1434	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
692		1435
693	/* queue check watchers, to be executed first */	1436	/* queue check watchers, to be executed first */
694	if (checkcnt)	1437	if (expect_false (checkcnt))
695	queue_events ((W *)checks, checkcnt, EV_CHECK);	1438	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
696		1439
697	call_pending ();	1440	call_pending (EV_A);
698	}
699	while (!ev_loop_done);
700		1441
701	if (ev_loop_done != 2)	1442	if (expect_false (loop_done))
		1443	break;
		1444	}
		1445
		1446	if (loop_done == EVUNLOOP_ONE)
		1447	loop_done = EVUNLOOP_CANCEL;
		1448	}
		1449
		1450	void
		1451	ev_unloop (EV_P_ int how)
		1452	{
702	ev_loop_done = 0;	1453	loop_done = how;
703	}	1454	}
704		1455
705	/*****************************************************************************/	1456	/*****************************************************************************/
706		1457
707	static void	1458	void inline_size
708	wlist_add (WL *head, WL elem)	1459	wlist_add (WL *head, WL elem)
709	{	1460	{
710	elem->next = *head;	1461	elem->next = *head;
711	*head = elem;	1462	*head = elem;
712	}	1463	}
713		1464
714	static void	1465	void inline_size
715	wlist_del (WL *head, WL elem)	1466	wlist_del (WL *head, WL elem)
716	{	1467	{
717	while (*head)	1468	while (*head)
718	{	1469	{
719	if (*head == elem)	1470	if (*head == elem)
…		…
724		1475
725	head = &(*head)->next;	1476	head = &(*head)->next;
726	}	1477	}
727	}	1478	}
728		1479
729	static void	1480	void inline_speed
730	ev_clear (W w)	1481	ev_clear_pending (EV_P_ W w)
731	{	1482	{
732	if (w->pending)	1483	if (w->pending)
733	{	1484	{
734	pendings [w->pending - 1].w = 0;	1485	pendings [ABSPRI (w)][w->pending - 1].w = 0;
735	w->pending = 0;	1486	w->pending = 0;
736	}	1487	}
737	}	1488	}
738		1489
739	static void	1490	void inline_speed
740	ev_start (W w, int active)	1491	ev_start (EV_P_ W w, int active)
741	{	1492	{
		1493	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1494	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1495
742	w->active = active;	1496	w->active = active;
		1497	ev_ref (EV_A);
743	}	1498	}
744		1499
745	static void	1500	void inline_size
746	ev_stop (W w)	1501	ev_stop (EV_P_ W w)
747	{	1502	{
		1503	ev_unref (EV_A);
748	w->active = 0;	1504	w->active = 0;
749	}	1505	}
750		1506
751	/*****************************************************************************/	1507	/*****************************************************************************/
752		1508
753	void	1509	void
754	ev_io_start (struct ev_io *w)	1510	ev_io_start (EV_P_ ev_io *w)
755	{	1511	{
756	if (ev_is_active (w))
757	return;
758
759	int fd = w->fd;	1512	int fd = w->fd;
760		1513
		1514	if (expect_false (ev_is_active (w)))
		1515	return;
		1516
		1517	assert (("ev_io_start called with negative fd", fd >= 0));
		1518
761	ev_start ((W)w, 1);	1519	ev_start (EV_A_ (W)w, 1);
762	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1520	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
763	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1521	wlist_add ((WL *)&anfds[fd].head, (WL)w);
764		1522
765	fd_change (fd);	1523	fd_change (EV_A_ fd);
766	}	1524	}
767		1525
768	void	1526	void
769	ev_io_stop (struct ev_io *w)	1527	ev_io_stop (EV_P_ ev_io *w)
770	{	1528	{
771	ev_clear ((W)w);	1529	ev_clear_pending (EV_A_ (W)w);
772	if (!ev_is_active (w))	1530	if (expect_false (!ev_is_active (w)))
773	return;	1531	return;
		1532
		1533	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
774		1534
775	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1535	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
776	ev_stop ((W)w);	1536	ev_stop (EV_A_ (W)w);
777		1537
778	fd_change (w->fd);	1538	fd_change (EV_A_ w->fd);
779	}	1539	}
780		1540
781	void	1541	void
782	ev_timer_start (struct ev_timer *w)	1542	ev_timer_start (EV_P_ ev_timer *w)
783	{	1543	{
784	if (ev_is_active (w))	1544	if (expect_false (ev_is_active (w)))
785	return;	1545	return;
786		1546
787	w->at += now;	1547	((WT)w)->at += mn_now;
788		1548
789	assert (("timer repeat value less than zero not allowed", w->repeat >= 0.));	1549	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
790		1550
791	ev_start ((W)w, ++timercnt);	1551	ev_start (EV_A_ (W)w, ++timercnt);
792	array_needsize (timers, timermax, timercnt, );	1552	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
793	timers [timercnt - 1] = w;	1553	timers [timercnt - 1] = w;
794	upheap ((WT *)timers, timercnt - 1);	1554	upheap ((WT *)timers, timercnt - 1);
795	}
796		1555
		1556	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1557	}
		1558
797	void	1559	void
798	ev_timer_stop (struct ev_timer *w)	1560	ev_timer_stop (EV_P_ ev_timer *w)
799	{	1561	{
800	ev_clear ((W)w);	1562	ev_clear_pending (EV_A_ (W)w);
801	if (!ev_is_active (w))	1563	if (expect_false (!ev_is_active (w)))
802	return;	1564	return;
803		1565
804	if (w->active < timercnt--)	1566	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1567
		1568	{
		1569	int active = ((W)w)->active;
		1570
		1571	if (expect_true (--active < --timercnt))
805	{	1572	{
806	timers [w->active - 1] = timers [timercnt];	1573	timers [active] = timers [timercnt];
807	downheap ((WT *)timers, timercnt, w->active - 1);	1574	adjustheap ((WT *)timers, timercnt, active);
808	}	1575	}
		1576	}
809		1577
810	w->at = w->repeat;	1578	((WT)w)->at -= mn_now;
811		1579
812	ev_stop ((W)w);	1580	ev_stop (EV_A_ (W)w);
813	}	1581	}
814		1582
815	void	1583	void
816	ev_timer_again (struct ev_timer *w)	1584	ev_timer_again (EV_P_ ev_timer *w)
817	{	1585	{
818	if (ev_is_active (w))	1586	if (ev_is_active (w))
819	{	1587	{
820	if (w->repeat)	1588	if (w->repeat)
821	{	1589	{
822	w->at = now + w->repeat;	1590	((WT)w)->at = mn_now + w->repeat;
823	downheap ((WT *)timers, timercnt, w->active - 1);	1591	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
824	}	1592	}
825	else	1593	else
826	ev_timer_stop (w);	1594	ev_timer_stop (EV_A_ w);
827	}	1595	}
828	else if (w->repeat)	1596	else if (w->repeat)
		1597	{
		1598	w->at = w->repeat;
829	ev_timer_start (w);	1599	ev_timer_start (EV_A_ w);
		1600	}
830	}	1601	}
831		1602
		1603	#if EV_PERIODIC_ENABLE
832	void	1604	void
833	ev_periodic_start (struct ev_periodic *w)	1605	ev_periodic_start (EV_P_ ev_periodic *w)
834	{	1606	{
835	if (ev_is_active (w))	1607	if (expect_false (ev_is_active (w)))
836	return;	1608	return;
837		1609
838	assert (("periodic interval value less than zero not allowed", w->interval >= 0.));	1610	if (w->reschedule_cb)
839		1611	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1612	else if (w->interval)
		1613	{
		1614	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
840	/* this formula differs from the one in periodic_reify because we do not always round up */	1615	/* this formula differs from the one in periodic_reify because we do not always round up */
841	if (w->interval)
842	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1616	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1617	}
843		1618
844	ev_start ((W)w, ++periodiccnt);	1619	ev_start (EV_A_ (W)w, ++periodiccnt);
845	array_needsize (periodics, periodicmax, periodiccnt, );	1620	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
846	periodics [periodiccnt - 1] = w;	1621	periodics [periodiccnt - 1] = w;
847	upheap ((WT *)periodics, periodiccnt - 1);	1622	upheap ((WT *)periodics, periodiccnt - 1);
848	}
849		1623
		1624	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1625	}
		1626
850	void	1627	void
851	ev_periodic_stop (struct ev_periodic *w)	1628	ev_periodic_stop (EV_P_ ev_periodic *w)
852	{	1629	{
853	ev_clear ((W)w);	1630	ev_clear_pending (EV_A_ (W)w);
854	if (!ev_is_active (w))	1631	if (expect_false (!ev_is_active (w)))
855	return;	1632	return;
856		1633
857	if (w->active < periodiccnt--)	1634	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1635
		1636	{
		1637	int active = ((W)w)->active;
		1638
		1639	if (expect_true (--active < --periodiccnt))
858	{	1640	{
859	periodics [w->active - 1] = periodics [periodiccnt];	1641	periodics [active] = periodics [periodiccnt];
860	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1642	adjustheap ((WT *)periodics, periodiccnt, active);
861	}	1643	}
		1644	}
862		1645
863	ev_stop ((W)w);	1646	ev_stop (EV_A_ (W)w);
864	}	1647	}
865		1648
866	void	1649	void
		1650	ev_periodic_again (EV_P_ ev_periodic *w)
		1651	{
		1652	/* TODO: use adjustheap and recalculation */
		1653	ev_periodic_stop (EV_A_ w);
		1654	ev_periodic_start (EV_A_ w);
		1655	}
		1656	#endif
		1657
		1658	#ifndef SA_RESTART
		1659	# define SA_RESTART 0
		1660	#endif
		1661
		1662	void
867	ev_signal_start (struct ev_signal *w)	1663	ev_signal_start (EV_P_ ev_signal *w)
868	{	1664	{
		1665	#if EV_MULTIPLICITY
		1666	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1667	#endif
869	if (ev_is_active (w))	1668	if (expect_false (ev_is_active (w)))
870	return;	1669	return;
871		1670
		1671	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
		1672
872	ev_start ((W)w, 1);	1673	ev_start (EV_A_ (W)w, 1);
873	array_needsize (signals, signalmax, w->signum, signals_init);	1674	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
874	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1675	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
875		1676
876	if (!w->next)	1677	if (!((WL)w)->next)
877	{	1678	{
		1679	#if _WIN32
		1680	signal (w->signum, sighandler);
		1681	#else
878	struct sigaction sa;	1682	struct sigaction sa;
879	sa.sa_handler = sighandler;	1683	sa.sa_handler = sighandler;
880	sigfillset (&sa.sa_mask);	1684	sigfillset (&sa.sa_mask);
881	sa.sa_flags = 0;	1685	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
882	sigaction (w->signum, &sa, 0);	1686	sigaction (w->signum, &sa, 0);
		1687	#endif
883	}	1688	}
884	}	1689	}
885		1690
886	void	1691	void
887	ev_signal_stop (struct ev_signal *w)	1692	ev_signal_stop (EV_P_ ev_signal *w)
888	{	1693	{
889	ev_clear ((W)w);	1694	ev_clear_pending (EV_A_ (W)w);
890	if (!ev_is_active (w))	1695	if (expect_false (!ev_is_active (w)))
891	return;	1696	return;
892		1697
893	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1698	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
894	ev_stop ((W)w);	1699	ev_stop (EV_A_ (W)w);
895		1700
896	if (!signals [w->signum - 1].head)	1701	if (!signals [w->signum - 1].head)
897	signal (w->signum, SIG_DFL);	1702	signal (w->signum, SIG_DFL);
898	}	1703	}
899		1704
900	void	1705	void
		1706	ev_child_start (EV_P_ ev_child *w)
		1707	{
		1708	#if EV_MULTIPLICITY
		1709	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1710	#endif
		1711	if (expect_false (ev_is_active (w)))
		1712	return;
		1713
		1714	ev_start (EV_A_ (W)w, 1);
		1715	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1716	}
		1717
		1718	void
		1719	ev_child_stop (EV_P_ ev_child *w)
		1720	{
		1721	ev_clear_pending (EV_A_ (W)w);
		1722	if (expect_false (!ev_is_active (w)))
		1723	return;
		1724
		1725	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
		1726	ev_stop (EV_A_ (W)w);
		1727	}
		1728
		1729	#if EV_STAT_ENABLE
		1730
		1731	# ifdef _WIN32
		1732	# undef lstat
		1733	# define lstat(a,b) _stati64 (a,b)
		1734	# endif
		1735
		1736	#define DEF_STAT_INTERVAL 5.0074891
		1737	#define MIN_STAT_INTERVAL 0.1074891
		1738
		1739	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1740
		1741	#if EV_USE_INOTIFY
		1742	# define EV_INOTIFY_BUFSIZE 8192
		1743
		1744	static void noinline
		1745	infy_add (EV_P_ ev_stat *w)
		1746	{
		1747	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);
		1748
		1749	if (w->wd < 0)
		1750	{
		1751	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1752
		1753	/* monitor some parent directory for speedup hints */
		1754	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1755	{
		1756	char path [4096];
		1757	strcpy (path, w->path);
		1758
		1759	do
		1760	{
		1761	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1762	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1763
		1764	char *pend = strrchr (path, '/');
		1765
		1766	if (!pend)
		1767	break; /* whoops, no '/', complain to your admin */
		1768
		1769	*pend = 0;
		1770	w->wd = inotify_add_watch (fs_fd, path, mask);
		1771	}
		1772	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1773	}
		1774	}
		1775	else
		1776	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1777
		1778	if (w->wd >= 0)
		1779	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1780	}
		1781
		1782	static void noinline
		1783	infy_del (EV_P_ ev_stat *w)
		1784	{
		1785	int slot;
		1786	int wd = w->wd;
		1787
		1788	if (wd < 0)
		1789	return;
		1790
		1791	w->wd = -2;
		1792	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1793	wlist_del (&fs_hash [slot].head, (WL)w);
		1794
		1795	/* remove this watcher, if others are watching it, they will rearm */
		1796	inotify_rm_watch (fs_fd, wd);
		1797	}
		1798
		1799	static void noinline
		1800	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1801	{
		1802	if (slot < 0)
		1803	/* overflow, need to check for all hahs slots */
		1804	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1805	infy_wd (EV_A_ slot, wd, ev);
		1806	else
		1807	{
		1808	WL w_;
		1809
		1810	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1811	{
		1812	ev_stat *w = (ev_stat *)w_;
		1813	w_ = w_->next; /* lets us remove this watcher and all before it */
		1814
		1815	if (w->wd == wd || wd == -1)
		1816	{
		1817	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1818	{
		1819	w->wd = -1;
		1820	infy_add (EV_A_ w); /* re-add, no matter what */
		1821	}
		1822
		1823	stat_timer_cb (EV_A_ &w->timer, 0);
		1824	}
		1825	}
		1826	}
		1827	}
		1828
		1829	static void
		1830	infy_cb (EV_P_ ev_io *w, int revents)
		1831	{
		1832	char buf [EV_INOTIFY_BUFSIZE];
		1833	struct inotify_event *ev = (struct inotify_event *)buf;
		1834	int ofs;
		1835	int len = read (fs_fd, buf, sizeof (buf));
		1836
		1837	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1838	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1839	}
		1840
		1841	void inline_size
		1842	infy_init (EV_P)
		1843	{
		1844	if (fs_fd != -2)
		1845	return;
		1846
		1847	fs_fd = inotify_init ();
		1848
		1849	if (fs_fd >= 0)
		1850	{
		1851	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1852	ev_set_priority (&fs_w, EV_MAXPRI);
		1853	ev_io_start (EV_A_ &fs_w);
		1854	}
		1855	}
		1856
		1857	void inline_size
		1858	infy_fork (EV_P)
		1859	{
		1860	int slot;
		1861
		1862	if (fs_fd < 0)
		1863	return;
		1864
		1865	close (fs_fd);
		1866	fs_fd = inotify_init ();
		1867
		1868	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1869	{
		1870	WL w_ = fs_hash [slot].head;
		1871	fs_hash [slot].head = 0;
		1872
		1873	while (w_)
		1874	{
		1875	ev_stat *w = (ev_stat *)w_;
		1876	w_ = w_->next; /* lets us add this watcher */
		1877
		1878	w->wd = -1;
		1879
		1880	if (fs_fd >= 0)
		1881	infy_add (EV_A_ w); /* re-add, no matter what */
		1882	else
		1883	ev_timer_start (EV_A_ &w->timer);
		1884	}
		1885
		1886	}
		1887	}
		1888
		1889	#endif
		1890
		1891	void
		1892	ev_stat_stat (EV_P_ ev_stat *w)
		1893	{
		1894	if (lstat (w->path, &w->attr) < 0)
		1895	w->attr.st_nlink = 0;
		1896	else if (!w->attr.st_nlink)
		1897	w->attr.st_nlink = 1;
		1898	}
		1899
		1900	static void noinline
		1901	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1902	{
		1903	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		1904
		1905	/* we copy this here each the time so that */
		1906	/* prev has the old value when the callback gets invoked */
		1907	w->prev = w->attr;
		1908	ev_stat_stat (EV_A_ w);
		1909
		1910	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		1911	if (
		1912	w->prev.st_dev != w->attr.st_dev
		1913	|| w->prev.st_ino != w->attr.st_ino
		1914	|| w->prev.st_mode != w->attr.st_mode
		1915	|| w->prev.st_nlink != w->attr.st_nlink
		1916	|| w->prev.st_uid != w->attr.st_uid
		1917	|| w->prev.st_gid != w->attr.st_gid
		1918	|| w->prev.st_rdev != w->attr.st_rdev
		1919	|| w->prev.st_size != w->attr.st_size
		1920	|| w->prev.st_atime != w->attr.st_atime
		1921	|| w->prev.st_mtime != w->attr.st_mtime
		1922	|| w->prev.st_ctime != w->attr.st_ctime
		1923	) {
		1924	#if EV_USE_INOTIFY
		1925	infy_del (EV_A_ w);
		1926	infy_add (EV_A_ w);
		1927	ev_stat_stat (EV_A_ w); /* avoid race... */
		1928	#endif
		1929
		1930	ev_feed_event (EV_A_ w, EV_STAT);
		1931	}
		1932	}
		1933
		1934	void
		1935	ev_stat_start (EV_P_ ev_stat *w)
		1936	{
		1937	if (expect_false (ev_is_active (w)))
		1938	return;
		1939
		1940	/* since we use memcmp, we need to clear any padding data etc. */
		1941	memset (&w->prev, 0, sizeof (ev_statdata));
		1942	memset (&w->attr, 0, sizeof (ev_statdata));
		1943
		1944	ev_stat_stat (EV_A_ w);
		1945
		1946	if (w->interval < MIN_STAT_INTERVAL)
		1947	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		1948
		1949	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		1950	ev_set_priority (&w->timer, ev_priority (w));
		1951
		1952	#if EV_USE_INOTIFY
		1953	infy_init (EV_A);
		1954
		1955	if (fs_fd >= 0)
		1956	infy_add (EV_A_ w);
		1957	else
		1958	#endif
		1959	ev_timer_start (EV_A_ &w->timer);
		1960
		1961	ev_start (EV_A_ (W)w, 1);
		1962	}
		1963
		1964	void
		1965	ev_stat_stop (EV_P_ ev_stat *w)
		1966	{
		1967	ev_clear_pending (EV_A_ (W)w);
		1968	if (expect_false (!ev_is_active (w)))
		1969	return;
		1970
		1971	#if EV_USE_INOTIFY
		1972	infy_del (EV_A_ w);
		1973	#endif
		1974	ev_timer_stop (EV_A_ &w->timer);
		1975
		1976	ev_stop (EV_A_ (W)w);
		1977	}
		1978	#endif
		1979
		1980	void
901	ev_idle_start (struct ev_idle *w)	1981	ev_idle_start (EV_P_ ev_idle *w)
902	{	1982	{
903	if (ev_is_active (w))	1983	if (expect_false (ev_is_active (w)))
904	return;	1984	return;
905		1985
906	ev_start ((W)w, ++idlecnt);	1986	ev_start (EV_A_ (W)w, ++idlecnt);
907	array_needsize (idles, idlemax, idlecnt, );	1987	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
908	idles [idlecnt - 1] = w;	1988	idles [idlecnt - 1] = w;
909	}	1989	}
910		1990
911	void	1991	void
912	ev_idle_stop (struct ev_idle *w)	1992	ev_idle_stop (EV_P_ ev_idle *w)
913	{	1993	{
914	ev_clear ((W)w);	1994	ev_clear_pending (EV_A_ (W)w);
915	if (ev_is_active (w))	1995	if (expect_false (!ev_is_active (w)))
916	return;	1996	return;
917		1997
		1998	{
		1999	int active = ((W)w)->active;
918	idles [w->active - 1] = idles [--idlecnt];	2000	idles [active - 1] = idles [--idlecnt];
		2001	((W)idles [active - 1])->active = active;
		2002	}
		2003
919	ev_stop ((W)w);	2004	ev_stop (EV_A_ (W)w);
920	}	2005	}
921		2006
922	void	2007	void
923	ev_prepare_start (struct ev_prepare *w)	2008	ev_prepare_start (EV_P_ ev_prepare *w)
924	{	2009	{
925	if (ev_is_active (w))	2010	if (expect_false (ev_is_active (w)))
926	return;	2011	return;
927		2012
928	ev_start ((W)w, ++preparecnt);	2013	ev_start (EV_A_ (W)w, ++preparecnt);
929	array_needsize (prepares, preparemax, preparecnt, );	2014	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
930	prepares [preparecnt - 1] = w;	2015	prepares [preparecnt - 1] = w;
931	}	2016	}
932		2017
933	void	2018	void
934	ev_prepare_stop (struct ev_prepare *w)	2019	ev_prepare_stop (EV_P_ ev_prepare *w)
935	{	2020	{
936	ev_clear ((W)w);	2021	ev_clear_pending (EV_A_ (W)w);
937	if (ev_is_active (w))	2022	if (expect_false (!ev_is_active (w)))
938	return;	2023	return;
939		2024
		2025	{
		2026	int active = ((W)w)->active;
940	prepares [w->active - 1] = prepares [--preparecnt];	2027	prepares [active - 1] = prepares [--preparecnt];
		2028	((W)prepares [active - 1])->active = active;
		2029	}
		2030
941	ev_stop ((W)w);	2031	ev_stop (EV_A_ (W)w);
942	}	2032	}
943		2033
944	void	2034	void
945	ev_check_start (struct ev_check *w)	2035	ev_check_start (EV_P_ ev_check *w)
946	{	2036	{
947	if (ev_is_active (w))	2037	if (expect_false (ev_is_active (w)))
948	return;	2038	return;
949		2039
950	ev_start ((W)w, ++checkcnt);	2040	ev_start (EV_A_ (W)w, ++checkcnt);
951	array_needsize (checks, checkmax, checkcnt, );	2041	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
952	checks [checkcnt - 1] = w;	2042	checks [checkcnt - 1] = w;
953	}	2043	}
954		2044
955	void	2045	void
956	ev_check_stop (struct ev_check *w)	2046	ev_check_stop (EV_P_ ev_check *w)
957	{	2047	{
958	ev_clear ((W)w);	2048	ev_clear_pending (EV_A_ (W)w);
959	if (ev_is_active (w))	2049	if (expect_false (!ev_is_active (w)))
960	return;	2050	return;
961		2051
		2052	{
		2053	int active = ((W)w)->active;
962	checks [w->active - 1] = checks [--checkcnt];	2054	checks [active - 1] = checks [--checkcnt];
		2055	((W)checks [active - 1])->active = active;
		2056	}
		2057
963	ev_stop ((W)w);	2058	ev_stop (EV_A_ (W)w);
964	}	2059	}
965		2060
966	void	2061	#if EV_EMBED_ENABLE
967	ev_child_start (struct ev_child *w)	2062	void noinline
		2063	ev_embed_sweep (EV_P_ ev_embed *w)
968	{	2064	{
		2065	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2066	}
		2067
		2068	static void
		2069	embed_cb (EV_P_ ev_io *io, int revents)
		2070	{
		2071	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2072
969	if (ev_is_active (w))	2073	if (ev_cb (w))
970	return;	2074	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2075	else
		2076	ev_embed_sweep (loop, w);
		2077	}
971		2078
		2079	void
		2080	ev_embed_start (EV_P_ ev_embed *w)
		2081	{
		2082	if (expect_false (ev_is_active (w)))
		2083	return;
		2084
		2085	{
		2086	struct ev_loop *loop = w->loop;
		2087	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2088	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2089	}
		2090
		2091	ev_set_priority (&w->io, ev_priority (w));
		2092	ev_io_start (EV_A_ &w->io);
		2093
972	ev_start ((W)w, 1);	2094	ev_start (EV_A_ (W)w, 1);
973	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
974	}	2095	}
975		2096
976	void	2097	void
977	ev_child_stop (struct ev_child *w)	2098	ev_embed_stop (EV_P_ ev_embed *w)
978	{	2099	{
979	ev_clear ((W)w);	2100	ev_clear_pending (EV_A_ (W)w);
980	if (ev_is_active (w))	2101	if (expect_false (!ev_is_active (w)))
981	return;	2102	return;
982		2103
983	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2104	ev_io_stop (EV_A_ &w->io);
		2105
984	ev_stop ((W)w);	2106	ev_stop (EV_A_ (W)w);
985	}	2107	}
		2108	#endif
		2109
		2110	#if EV_FORK_ENABLE
		2111	void
		2112	ev_fork_start (EV_P_ ev_fork *w)
		2113	{
		2114	if (expect_false (ev_is_active (w)))
		2115	return;
		2116
		2117	ev_start (EV_A_ (W)w, ++forkcnt);
		2118	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2119	forks [forkcnt - 1] = w;
		2120	}
		2121
		2122	void
		2123	ev_fork_stop (EV_P_ ev_fork *w)
		2124	{
		2125	ev_clear_pending (EV_A_ (W)w);
		2126	if (expect_false (!ev_is_active (w)))
		2127	return;
		2128
		2129	{
		2130	int active = ((W)w)->active;
		2131	forks [active - 1] = forks [--forkcnt];
		2132	((W)forks [active - 1])->active = active;
		2133	}
		2134
		2135	ev_stop (EV_A_ (W)w);
		2136	}
		2137	#endif
986		2138
987	/*****************************************************************************/	2139	/*****************************************************************************/
988		2140
989	struct ev_once	2141	struct ev_once
990	{	2142	{
991	struct ev_io io;	2143	ev_io io;
992	struct ev_timer to;	2144	ev_timer to;
993	void (*cb)(int revents, void *arg);	2145	void (*cb)(int revents, void *arg);
994	void *arg;	2146	void *arg;
995	};	2147	};
996		2148
997	static void	2149	static void
998	once_cb (struct ev_once *once, int revents)	2150	once_cb (EV_P_ struct ev_once *once, int revents)
999	{	2151	{
1000	void (*cb)(int revents, void *arg) = once->cb;	2152	void (*cb)(int revents, void *arg) = once->cb;
1001	void *arg = once->arg;	2153	void *arg = once->arg;
1002		2154
1003	ev_io_stop (&once->io);	2155	ev_io_stop (EV_A_ &once->io);
1004	ev_timer_stop (&once->to);	2156	ev_timer_stop (EV_A_ &once->to);
1005	free (once);	2157	ev_free (once);
1006		2158
1007	cb (revents, arg);	2159	cb (revents, arg);
1008	}	2160	}
1009		2161
1010	static void	2162	static void
1011	once_cb_io (struct ev_io *w, int revents)	2163	once_cb_io (EV_P_ ev_io *w, int revents)
1012	{	2164	{
1013	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2165	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1014	}	2166	}
1015		2167
1016	static void	2168	static void
1017	once_cb_to (struct ev_timer *w, int revents)	2169	once_cb_to (EV_P_ ev_timer *w, int revents)
1018	{	2170	{
1019	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2171	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1020	}	2172	}
1021		2173
1022	void	2174	void
1023	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2175	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1024	{	2176	{
1025	struct ev_once *once = malloc (sizeof (struct ev_once));	2177	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1026		2178
1027	if (!once)	2179	if (expect_false (!once))
		2180	{
1028	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2181	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1029	else	2182	return;
1030	{	2183	}
		2184
1031	once->cb = cb;	2185	once->cb = cb;
1032	once->arg = arg;	2186	once->arg = arg;
1033		2187
1034	ev_watcher_init (&once->io, once_cb_io);	2188	ev_init (&once->io, once_cb_io);
1035	if (fd >= 0)	2189	if (fd >= 0)
1036	{	2190	{
1037	ev_io_set (&once->io, fd, events);	2191	ev_io_set (&once->io, fd, events);
1038	ev_io_start (&once->io);	2192	ev_io_start (EV_A_ &once->io);
1039	}	2193	}
1040		2194
1041	ev_watcher_init (&once->to, once_cb_to);	2195	ev_init (&once->to, once_cb_to);
1042	if (timeout >= 0.)	2196	if (timeout >= 0.)
1043	{	2197	{
1044	ev_timer_set (&once->to, timeout, 0.);	2198	ev_timer_set (&once->to, timeout, 0.);
1045	ev_timer_start (&once->to);	2199	ev_timer_start (EV_A_ &once->to);
1046	}
1047	}
1048	}
1049
1050	/*****************************************************************************/
1051
1052	#if 0
1053
1054	struct ev_io wio;
1055
1056	static void
1057	sin_cb (struct ev_io *w, int revents)
1058	{
1059	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1060	}
1061
1062	static void
1063	ocb (struct ev_timer *w, int revents)
1064	{
1065	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1066	ev_timer_stop (w);
1067	ev_timer_start (w);
1068	}
1069
1070	static void
1071	scb (struct ev_signal *w, int revents)
1072	{
1073	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1074	ev_io_stop (&wio);
1075	ev_io_start (&wio);
1076	}
1077
1078	static void
1079	gcb (struct ev_signal *w, int revents)
1080	{
1081	fprintf (stderr, "generic %x\n", revents);
1082
1083	}
1084
1085	int main (void)
1086	{
1087	ev_init (0);
1088
1089	ev_io_init (&wio, sin_cb, 0, EV_READ);
1090	ev_io_start (&wio);
1091
1092	struct ev_timer t[10000];
1093
1094	#if 0
1095	int i;
1096	for (i = 0; i < 10000; ++i)
1097	{	2200	}
1098	struct ev_timer *w = t + i;
1099	ev_watcher_init (w, ocb, i);
1100	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1101	ev_timer_start (w);
1102	if (drand48 () < 0.5)
1103	ev_timer_stop (w);
1104	}
1105	#endif
1106
1107	struct ev_timer t1;
1108	ev_timer_init (&t1, ocb, 5, 10);
1109	ev_timer_start (&t1);
1110
1111	struct ev_signal sig;
1112	ev_signal_init (&sig, scb, SIGQUIT);
1113	ev_signal_start (&sig);
1114
1115	struct ev_check cw;
1116	ev_check_init (&cw, gcb);
1117	ev_check_start (&cw);
1118
1119	struct ev_idle iw;
1120	ev_idle_init (&iw, gcb);
1121	ev_idle_start (&iw);
1122
1123	ev_loop (0);
1124
1125	return 0;
1126	}	2201	}
1127		2202
		2203	#ifdef __cplusplus
		2204	}
1128	#endif	2205	#endif
1129		2206
1130
1131
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