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Comparing libev/ev.c (file contents):
Revision 1.39 by root, Thu Nov 1 17:17:32 2007 UTC vs.
Revision 1.180 by root, Tue Dec 11 22:04:55 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (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
29	* 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.
30	*/	30	*/
		31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
31	#if EV_USE_CONFIG_H	37	# ifdef EV_CONFIG_H
		38	# include EV_CONFIG_H
		39	# else
32	# 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
33	#endif	107	#endif
34		108
35	#include <math.h>	109	#include <math.h>
36	#include <stdlib.h>	110	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	111	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	112	#include <stddef.h>
41		113
42	#include <stdio.h>	114	#include <stdio.h>
43		115
44	#include <assert.h>	116	#include <assert.h>
45	#include <errno.h>	117	#include <errno.h>
46	#include <sys/types.h>	118	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	119	#include <time.h>
50		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
51	#ifndef EV_USE_MONOTONIC	143	#ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 1	144	# define EV_USE_MONOTONIC 0
		145	#endif
		146
		147	#ifndef EV_USE_REALTIME
		148	# define EV_USE_REALTIME 0
		149	#endif
		150
		151	#ifndef EV_USE_SELECT
		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
53	#endif	160	# endif
		161	#endif
		162
		163	#ifndef EV_USE_EPOLL
		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
		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	/**/
54		196
55	#ifndef CLOCK_MONOTONIC	197	#ifndef CLOCK_MONOTONIC
56	# undef EV_USE_MONOTONIC	198	# undef EV_USE_MONOTONIC
57	# define EV_USE_MONOTONIC 0	199	# define EV_USE_MONOTONIC 0
58	#endif	200	#endif
59		201
60	#ifndef EV_USE_SELECT
61	# define EV_USE_SELECT 1
62	#endif
63
64	#ifndef EV_USE_EPOLL
65	# define EV_USE_EPOLL 0
66	#endif
67
68	#ifndef CLOCK_REALTIME	202	#ifndef CLOCK_REALTIME
		203	# undef EV_USE_REALTIME
69	# define EV_USE_REALTIME 0	204	# define EV_USE_REALTIME 0
70	#endif	205	#endif
71	#ifndef EV_USE_REALTIME	206
72	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	207	#if EV_SELECT_IS_WINSOCKET
		208	# include <winsock.h>
73	#endif	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	/**/
		220
		221	/*
		222	* This is used to avoid floating point rounding problems.
		223	* It is added to ev_rt_now when scheduling periodics
		224	* to ensure progress, time-wise, even when rounding
		225	* errors are against us.
		226	* This value is good at least till the year 4000.
		227	* Better solutions welcome.
		228	*/
		229	#define TIME_EPSILON 0.0001220703125 /* 1/8192 */
74		230
75	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	231	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
76	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detetc time jumps) */	232	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
77	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
78	#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */	233	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds, TODO */
79		234
80	#include "ev.h"	235	#if __GNUC__ >= 3
		236	# define expect(expr,value) __builtin_expect ((expr),(value))
		237	# define noinline __attribute__ ((noinline))
		238	#else
		239	# define expect(expr,value) (expr)
		240	# define noinline
		241	# if __STDC_VERSION__ < 199901L
		242	# define inline
		243	# endif
		244	#endif
81		245
		246	#define expect_false(expr) expect ((expr) != 0, 0)
		247	#define expect_true(expr) expect ((expr) != 0, 1)
		248	#define inline_size static inline
		249
		250	#if EV_MINIMAL
		251	# define inline_speed static noinline
		252	#else
		253	# define inline_speed static inline
		254	#endif
		255
		256	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		257	#define ABSPRI(w) (((W)w)->priority - EV_MINPRI)
		258
		259	#define EMPTY /* required for microsofts broken pseudo-c compiler */
		260	#define EMPTY2(a,b) /* used to suppress some warnings */
		261
82	typedef struct ev_watcher *W;	262	typedef ev_watcher *W;
83	typedef struct ev_watcher_list *WL;	263	typedef ev_watcher_list *WL;
84	typedef struct ev_watcher_time *WT;	264	typedef ev_watcher_time *WT;
85		265
86	static ev_tstamp now, diff; /* monotonic clock */	266	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		267
		268	#ifdef _WIN32
		269	# include "ev_win32.c"
		270	#endif
		271
		272	/*****************************************************************************/
		273
		274	static void (*syserr_cb)(const char *msg);
		275
		276	void
		277	ev_set_syserr_cb (void (*cb)(const char *msg))
		278	{
		279	syserr_cb = cb;
		280	}
		281
		282	static void noinline
		283	syserr (const char *msg)
		284	{
		285	if (!msg)
		286	msg = "(libev) system error";
		287
		288	if (syserr_cb)
		289	syserr_cb (msg);
		290	else
		291	{
		292	perror (msg);
		293	abort ();
		294	}
		295	}
		296
		297	static void *(*alloc)(void *ptr, long size);
		298
		299	void
		300	ev_set_allocator (void *(*cb)(void *ptr, long size))
		301	{
		302	alloc = cb;
		303	}
		304
		305	inline_speed void *
		306	ev_realloc (void *ptr, long size)
		307	{
		308	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		309
		310	if (!ptr && size)
		311	{
		312	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		313	abort ();
		314	}
		315
		316	return ptr;
		317	}
		318
		319	#define ev_malloc(size) ev_realloc (0, (size))
		320	#define ev_free(ptr) ev_realloc ((ptr), 0)
		321
		322	/*****************************************************************************/
		323
		324	typedef struct
		325	{
		326	WL head;
		327	unsigned char events;
		328	unsigned char reify;
		329	#if EV_SELECT_IS_WINSOCKET
		330	SOCKET handle;
		331	#endif
		332	} ANFD;
		333
		334	typedef struct
		335	{
		336	W w;
		337	int events;
		338	} ANPENDING;
		339
		340	#if EV_USE_INOTIFY
		341	typedef struct
		342	{
		343	WL head;
		344	} ANFS;
		345	#endif
		346
		347	#if EV_MULTIPLICITY
		348
		349	struct ev_loop
		350	{
		351	ev_tstamp ev_rt_now;
		352	#define ev_rt_now ((loop)->ev_rt_now)
		353	#define VAR(name,decl) decl;
		354	#include "ev_vars.h"
		355	#undef VAR
		356	};
		357	#include "ev_wrap.h"
		358
		359	static struct ev_loop default_loop_struct;
		360	struct ev_loop *ev_default_loop_ptr;
		361
		362	#else
		363
87	ev_tstamp ev_now;	364	ev_tstamp ev_rt_now;
88	int ev_method;	365	#define VAR(name,decl) static decl;
		366	#include "ev_vars.h"
		367	#undef VAR
89		368
90	static int have_monotonic; /* runtime */	369	static int ev_default_loop_ptr;
91		370
92	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	371	#endif
93	static void (*method_modify)(int fd, int oev, int nev);
94	static void (*method_poll)(ev_tstamp timeout);
95		372
96	/*****************************************************************************/	373	/*****************************************************************************/
97		374
98	ev_tstamp	375	ev_tstamp
99	ev_time (void)	376	ev_time (void)
…		…
107	gettimeofday (&tv, 0);	384	gettimeofday (&tv, 0);
108	return tv.tv_sec + tv.tv_usec * 1e-6;	385	return tv.tv_sec + tv.tv_usec * 1e-6;
109	#endif	386	#endif
110	}	387	}
111		388
112	static ev_tstamp	389	ev_tstamp inline_size
113	get_clock (void)	390	get_clock (void)
114	{	391	{
115	#if EV_USE_MONOTONIC	392	#if EV_USE_MONOTONIC
116	if (have_monotonic)	393	if (expect_true (have_monotonic))
117	{	394	{
118	struct timespec ts;	395	struct timespec ts;
119	clock_gettime (CLOCK_MONOTONIC, &ts);	396	clock_gettime (CLOCK_MONOTONIC, &ts);
120	return ts.tv_sec + ts.tv_nsec * 1e-9;	397	return ts.tv_sec + ts.tv_nsec * 1e-9;
121	}	398	}
122	#endif	399	#endif
123		400
124	return ev_time ();	401	return ev_time ();
125	}	402	}
126		403
127	#define array_roundsize(base,n) ((n) | 4 & ~3)	404	#if EV_MULTIPLICITY
		405	ev_tstamp
		406	ev_now (EV_P)
		407	{
		408	return ev_rt_now;
		409	}
		410	#endif
128		411
		412	int inline_size
		413	array_nextsize (int elem, int cur, int cnt)
		414	{
		415	int ncur = cur + 1;
		416
		417	do
		418	ncur <<= 1;
		419	while (cnt > ncur);
		420
		421	/* if size > 4096, round to 4096 - 4 * longs to accomodate malloc overhead */
		422	if (elem * ncur > 4096)
		423	{
		424	ncur *= elem;
		425	ncur = (ncur + elem + 4095 + sizeof (void *) * 4) & ~4095;
		426	ncur = ncur - sizeof (void *) * 4;
		427	ncur /= elem;
		428	}
		429
		430	return ncur;
		431	}
		432
		433	static noinline void *
		434	array_realloc (int elem, void *base, int *cur, int cnt)
		435	{
		436	*cur = array_nextsize (elem, *cur, cnt);
		437	return ev_realloc (base, elem * *cur);
		438	}
		439
129	#define array_needsize(base,cur,cnt,init) \	440	#define array_needsize(type,base,cur,cnt,init) \
130	if ((cnt) > cur) \	441	if (expect_false ((cnt) > (cur))) \
131	{ \	442	{ \
132	int newcnt = cur; \	443	int ocur_ = (cur); \
133	do \	444	(base) = (type *)array_realloc \
134	{ \	445	(sizeof (type), (base), &(cur), (cnt)); \
135	newcnt = array_roundsize (base, newcnt << 1); \	446	init ((base) + (ocur_), (cur) - ocur_); \
136	} \	447	}
137	while ((cnt) > newcnt); \	448
		449	#if 0
		450	#define array_slim(type,stem) \
		451	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
138	\	452	{ \
139	base = realloc (base, sizeof (*base) * (newcnt)); \	453	stem ## max = array_roundsize (stem ## cnt >> 1); \
140	init (base + cur, newcnt - cur); \	454	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
141	cur = newcnt; \	455	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
142	}	456	}
		457	#endif
		458
		459	#define array_free(stem, idx) \
		460	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
143		461
144	/*****************************************************************************/	462	/*****************************************************************************/
145		463
146	typedef struct	464	void noinline
		465	ev_feed_event (EV_P_ void *w, int revents)
147	{	466	{
148	struct ev_io *head;	467	W w_ = (W)w;
149	unsigned char events;	468	int pri = ABSPRI (w_);
150	unsigned char reify;
151	} ANFD;
152		469
153	static ANFD *anfds;	470	if (expect_false (w_->pending))
154	static int anfdmax;	471	pendings [pri][w_->pending - 1].events |= revents;
		472	else
		473	{
		474	w_->pending = ++pendingcnt [pri];
		475	array_needsize (ANPENDING, pendings [pri], pendingmax [pri], w_->pending, EMPTY2);
		476	pendings [pri][w_->pending - 1].w = w_;
		477	pendings [pri][w_->pending - 1].events = revents;
		478	}
		479	}
155		480
156	static void	481	void inline_speed
		482	queue_events (EV_P_ W *events, int eventcnt, int type)
		483	{
		484	int i;
		485
		486	for (i = 0; i < eventcnt; ++i)
		487	ev_feed_event (EV_A_ events [i], type);
		488	}
		489
		490	/*****************************************************************************/
		491
		492	void inline_size
157	anfds_init (ANFD *base, int count)	493	anfds_init (ANFD *base, int count)
158	{	494	{
159	while (count--)	495	while (count--)
160	{	496	{
161	base->head = 0;	497	base->head = 0;
…		…
164		500
165	++base;	501	++base;
166	}	502	}
167	}	503	}
168		504
169	typedef struct	505	void inline_speed
170	{
171	W w;
172	int events;
173	} ANPENDING;
174
175	static ANPENDING *pendings;
176	static int pendingmax, pendingcnt;
177
178	static void
179	event (W w, int events)
180	{
181	if (w->pending)
182	{
183	pendings [w->pending - 1].events |= events;
184	return;
185	}
186
187	w->pending = ++pendingcnt;
188	array_needsize (pendings, pendingmax, pendingcnt, );
189	pendings [pendingcnt - 1].w = w;
190	pendings [pendingcnt - 1].events = events;
191	}
192
193	static void
194	queue_events (W *events, int eventcnt, int type)
195	{
196	int i;
197
198	for (i = 0; i < eventcnt; ++i)
199	event (events [i], type);
200	}
201
202	static void
203	fd_event (int fd, int events)	506	fd_event (EV_P_ int fd, int revents)
204	{	507	{
205	ANFD *anfd = anfds + fd;	508	ANFD *anfd = anfds + fd;
206	struct ev_io *w;	509	ev_io *w;
207		510
208	for (w = anfd->head; w; w = w->next)	511	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
209	{	512	{
210	int ev = w->events & events;	513	int ev = w->events & revents;
211		514
212	if (ev)	515	if (ev)
213	event ((W)w, ev);	516	ev_feed_event (EV_A_ (W)w, ev);
214	}	517	}
215	}	518	}
216		519
217	/*****************************************************************************/	520	void
		521	ev_feed_fd_event (EV_P_ int fd, int revents)
		522	{
		523	if (fd >= 0 && fd < anfdmax)
		524	fd_event (EV_A_ fd, revents);
		525	}
218		526
219	static int *fdchanges;	527	void inline_size
220	static int fdchangemax, fdchangecnt;	528	fd_reify (EV_P)
221
222	static void
223	fd_reify (void)
224	{	529	{
225	int i;	530	int i;
226		531
227	for (i = 0; i < fdchangecnt; ++i)	532	for (i = 0; i < fdchangecnt; ++i)
228	{	533	{
229	int fd = fdchanges [i];	534	int fd = fdchanges [i];
230	ANFD *anfd = anfds + fd;	535	ANFD *anfd = anfds + fd;
231	struct ev_io *w;	536	ev_io *w;
232		537
233	int events = 0;	538	int events = 0;
234		539
235	for (w = anfd->head; w; w = w->next)	540	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
236	events |= w->events;	541	events |= w->events;
237		542
		543	#if EV_SELECT_IS_WINSOCKET
		544	if (events)
		545	{
		546	unsigned long argp;
		547	anfd->handle = _get_osfhandle (fd);
		548	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		549	}
		550	#endif
		551
238	anfd->reify = 0;	552	anfd->reify = 0;
239		553
240	if (anfd->events != events)
241	{
242	method_modify (fd, anfd->events, events);	554	backend_modify (EV_A_ fd, anfd->events, events);
243	anfd->events = events;	555	anfd->events = events;
244	}
245	}	556	}
246		557
247	fdchangecnt = 0;	558	fdchangecnt = 0;
248	}	559	}
249		560
250	static void	561	void inline_size
251	fd_change (int fd)	562	fd_change (EV_P_ int fd)
252	{	563	{
253	if (anfds [fd].reify || fdchangecnt < 0)	564	if (expect_false (anfds [fd].reify))
254	return;	565	return;
255		566
256	anfds [fd].reify = 1;	567	anfds [fd].reify = 1;
257		568
258	++fdchangecnt;	569	++fdchangecnt;
259	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	570	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
260	fdchanges [fdchangecnt - 1] = fd;	571	fdchanges [fdchangecnt - 1] = fd;
261	}	572	}
262		573
		574	void inline_speed
		575	fd_kill (EV_P_ int fd)
		576	{
		577	ev_io *w;
		578
		579	while ((w = (ev_io *)anfds [fd].head))
		580	{
		581	ev_io_stop (EV_A_ w);
		582	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		583	}
		584	}
		585
		586	int inline_size
		587	fd_valid (int fd)
		588	{
		589	#ifdef _WIN32
		590	return _get_osfhandle (fd) != -1;
		591	#else
		592	return fcntl (fd, F_GETFD) != -1;
		593	#endif
		594	}
		595
263	/* called on EBADF to verify fds */	596	/* called on EBADF to verify fds */
264	static void	597	static void noinline
265	fd_recheck (void)	598	fd_ebadf (EV_P)
266	{	599	{
267	int fd;	600	int fd;
268		601
269	for (fd = 0; fd < anfdmax; ++fd)	602	for (fd = 0; fd < anfdmax; ++fd)
270	if (anfds [fd].events)	603	if (anfds [fd].events)
271	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	604	if (!fd_valid (fd) == -1 && errno == EBADF)
272	while (anfds [fd].head)	605	fd_kill (EV_A_ fd);
		606	}
		607
		608	/* called on ENOMEM in select/poll to kill some fds and retry */
		609	static void noinline
		610	fd_enomem (EV_P)
		611	{
		612	int fd;
		613
		614	for (fd = anfdmax; fd--; )
		615	if (anfds [fd].events)
273	{	616	{
274	ev_io_stop (anfds [fd].head);	617	fd_kill (EV_A_ fd);
275	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	618	return;
276	}	619	}
		620	}
		621
		622	/* usually called after fork if backend needs to re-arm all fds from scratch */
		623	static void noinline
		624	fd_rearm_all (EV_P)
		625	{
		626	int fd;
		627
		628	for (fd = 0; fd < anfdmax; ++fd)
		629	if (anfds [fd].events)
		630	{
		631	anfds [fd].events = 0;
		632	fd_change (EV_A_ fd);
		633	}
277	}	634	}
278		635
279	/*****************************************************************************/	636	/*****************************************************************************/
280		637
281	static struct ev_timer **timers;	638	void inline_speed
282	static int timermax, timercnt;
283
284	static struct ev_periodic **periodics;
285	static int periodicmax, periodiccnt;
286
287	static void
288	upheap (WT *timers, int k)	639	upheap (WT *heap, int k)
289	{	640	{
290	WT w = timers [k];	641	WT w = heap [k];
291		642
292	while (k && timers [k >> 1]->at > w->at)	643	while (k)
293	{
294	timers [k] = timers [k >> 1];
295	timers [k]->active = k + 1;
296	k >>= 1;
297	}	644	{
298
299	timers [k] = w;
300	timers [k]->active = k + 1;
301
302	}
303
304	static void
305	downheap (WT *timers, int N, int k)
306	{
307	WT w = timers [k];
308
309	while (k < (N >> 1))
310	{
311	int j = k << 1;	645	int p = (k - 1) >> 1;
312		646
313	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	647	if (heap [p]->at <= w->at)
314	++j;
315
316	if (w->at <= timers [j]->at)
317	break;	648	break;
318		649
319	timers [k] = timers [j];	650	heap [k] = heap [p];
320	timers [k]->active = k + 1;	651	((W)heap [k])->active = k + 1;
321	k = j;	652	k = p;
		653	}
		654
		655	heap [k] = w;
		656	((W)heap [k])->active = k + 1;
		657
		658	}
		659
		660	void inline_speed
		661	downheap (WT *heap, int N, int k)
		662	{
		663	WT w = heap [k];
		664
		665	for (;;)
322	}	666	{
		667	int c = (k << 1) + 1;
323		668
		669	if (c >= N)
		670	break;
		671
		672	c += c + 1 < N && heap [c]->at > heap [c + 1]->at
		673	? 1 : 0;
		674
		675	if (w->at <= heap [c]->at)
		676	break;
		677
		678	heap [k] = heap [c];
		679	((W)heap [k])->active = k + 1;
		680
		681	k = c;
		682	}
		683
324	timers [k] = w;	684	heap [k] = w;
325	timers [k]->active = k + 1;	685	((W)heap [k])->active = k + 1;
		686	}
		687
		688	void inline_size
		689	adjustheap (WT *heap, int N, int k)
		690	{
		691	upheap (heap, k);
		692	downheap (heap, N, k);
326	}	693	}
327		694
328	/*****************************************************************************/	695	/*****************************************************************************/
329		696
330	typedef struct	697	typedef struct
331	{	698	{
332	struct ev_signal *head;	699	WL head;
333	sig_atomic_t volatile gotsig;	700	sig_atomic_t volatile gotsig;
334	} ANSIG;	701	} ANSIG;
335		702
336	static ANSIG *signals;	703	static ANSIG *signals;
337	static int signalmax;	704	static int signalmax;
338		705
339	static int sigpipe [2];	706	static int sigpipe [2];
340	static sig_atomic_t volatile gotsig;	707	static sig_atomic_t volatile gotsig;
341	static struct ev_io sigev;	708	static ev_io sigev;
342		709
343	static void	710	void inline_size
344	signals_init (ANSIG *base, int count)	711	signals_init (ANSIG *base, int count)
345	{	712	{
346	while (count--)	713	while (count--)
347	{	714	{
348	base->head = 0;	715	base->head = 0;
…		…
353	}	720	}
354		721
355	static void	722	static void
356	sighandler (int signum)	723	sighandler (int signum)
357	{	724	{
		725	#if _WIN32
		726	signal (signum, sighandler);
		727	#endif
		728
358	signals [signum - 1].gotsig = 1;	729	signals [signum - 1].gotsig = 1;
359		730
360	if (!gotsig)	731	if (!gotsig)
361	{	732	{
		733	int old_errno = errno;
362	gotsig = 1;	734	gotsig = 1;
363	write (sigpipe [1], &signum, 1);	735	write (sigpipe [1], &signum, 1);
		736	errno = old_errno;
364	}	737	}
		738	}
		739
		740	void noinline
		741	ev_feed_signal_event (EV_P_ int signum)
		742	{
		743	WL w;
		744
		745	#if EV_MULTIPLICITY
		746	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		747	#endif
		748
		749	--signum;
		750
		751	if (signum < 0 || signum >= signalmax)
		752	return;
		753
		754	signals [signum].gotsig = 0;
		755
		756	for (w = signals [signum].head; w; w = w->next)
		757	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
365	}	758	}
366		759
367	static void	760	static void
368	sigcb (struct ev_io *iow, int revents)	761	sigcb (EV_P_ ev_io *iow, int revents)
369	{	762	{
370	struct ev_signal *w;
371	int signum;	763	int signum;
372		764
373	read (sigpipe [0], &revents, 1);	765	read (sigpipe [0], &revents, 1);
374	gotsig = 0;	766	gotsig = 0;
375		767
376	for (signum = signalmax; signum--; )	768	for (signum = signalmax; signum--; )
377	if (signals [signum].gotsig)	769	if (signals [signum].gotsig)
		770	ev_feed_signal_event (EV_A_ signum + 1);
		771	}
		772
		773	void inline_speed
		774	fd_intern (int fd)
		775	{
		776	#ifdef _WIN32
		777	int arg = 1;
		778	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		779	#else
		780	fcntl (fd, F_SETFD, FD_CLOEXEC);
		781	fcntl (fd, F_SETFL, O_NONBLOCK);
		782	#endif
		783	}
		784
		785	static void noinline
		786	siginit (EV_P)
		787	{
		788	fd_intern (sigpipe [0]);
		789	fd_intern (sigpipe [1]);
		790
		791	ev_io_set (&sigev, sigpipe [0], EV_READ);
		792	ev_io_start (EV_A_ &sigev);
		793	ev_unref (EV_A); /* child watcher should not keep loop alive */
		794	}
		795
		796	/*****************************************************************************/
		797
		798	static ev_child *childs [EV_PID_HASHSIZE];
		799
		800	#ifndef _WIN32
		801
		802	static ev_signal childev;
		803
		804	void inline_speed
		805	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
		806	{
		807	ev_child *w;
		808
		809	for (w = (ev_child *)childs [chain & (EV_PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
		810	if (w->pid == pid || !w->pid)
378	{	811	{
379	signals [signum].gotsig = 0;	812	ev_set_priority (w, ev_priority (sw)); /* need to do it *now* */
380		813	w->rpid = pid;
381	for (w = signals [signum].head; w; w = w->next)	814	w->rstatus = status;
382	event ((W)w, EV_SIGNAL);	815	ev_feed_event (EV_A_ (W)w, EV_CHILD);
383	}	816	}
384	}	817	}
385
386	static void
387	siginit (void)
388	{
389	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
390	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
391
392	/* rather than sort out wether we really need nb, set it */
393	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
394	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
395
396	ev_io_set (&sigev, sigpipe [0], EV_READ);
397	ev_io_start (&sigev);
398	}
399
400	/*****************************************************************************/
401
402	static struct ev_idle **idles;
403	static int idlemax, idlecnt;
404
405	static struct ev_prepare **prepares;
406	static int preparemax, preparecnt;
407
408	static struct ev_check **checks;
409	static int checkmax, checkcnt;
410
411	/*****************************************************************************/
412
413	static struct ev_child *childs [PID_HASHSIZE];
414	static struct ev_signal childev;
415		818
416	#ifndef WCONTINUED	819	#ifndef WCONTINUED
417	# define WCONTINUED 0	820	# define WCONTINUED 0
418	#endif	821	#endif
419		822
420	static void	823	static void
421	childcb (struct ev_signal *sw, int revents)	824	childcb (EV_P_ ev_signal *sw, int revents)
422	{	825	{
423	struct ev_child *w;
424	int pid, status;	826	int pid, status;
425		827
		828	/* some systems define WCONTINUED but then fail to support it (linux 2.4) */
426	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	829	if (0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
427	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	830	if (!WCONTINUED
428	if (w->pid == pid || !w->pid)	831	|| errno != EINVAL
429	{	832	|| 0 >= (pid = waitpid (-1, &status, WNOHANG | WUNTRACED)))
430	w->status = status;	833	return;
431	event ((W)w, EV_CHILD);	834
432	}	835	/* make sure we are called again until all childs have been reaped */
		836	/* we need to do it this way so that the callback gets called before we continue */
		837	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
		838
		839	child_reap (EV_A_ sw, pid, pid, status);
		840	if (EV_PID_HASHSIZE > 1)
		841	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
433	}	842	}
		843
		844	#endif
434		845
435	/*****************************************************************************/	846	/*****************************************************************************/
436		847
		848	#if EV_USE_PORT
		849	# include "ev_port.c"
		850	#endif
		851	#if EV_USE_KQUEUE
		852	# include "ev_kqueue.c"
		853	#endif
437	#if EV_USE_EPOLL	854	#if EV_USE_EPOLL
438	# include "ev_epoll.c"	855	# include "ev_epoll.c"
439	#endif	856	#endif
		857	#if EV_USE_POLL
		858	# include "ev_poll.c"
		859	#endif
440	#if EV_USE_SELECT	860	#if EV_USE_SELECT
441	# include "ev_select.c"	861	# include "ev_select.c"
442	#endif	862	#endif
443		863
444	int	864	int
…		…
451	ev_version_minor (void)	871	ev_version_minor (void)
452	{	872	{
453	return EV_VERSION_MINOR;	873	return EV_VERSION_MINOR;
454	}	874	}
455		875
456	int ev_init (int flags)	876	/* return true if we are running with elevated privileges and should ignore env variables */
		877	int inline_size
		878	enable_secure (void)
457	{	879	{
458	if (!ev_method)	880	#ifdef _WIN32
		881	return 0;
		882	#else
		883	return getuid () != geteuid ()
		884	|| getgid () != getegid ();
		885	#endif
		886	}
		887
		888	unsigned int
		889	ev_supported_backends (void)
		890	{
		891	unsigned int flags = 0;
		892
		893	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
		894	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
		895	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
		896	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
		897	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
		898
		899	return flags;
		900	}
		901
		902	unsigned int
		903	ev_recommended_backends (void)
		904	{
		905	unsigned int flags = ev_supported_backends ();
		906
		907	#ifndef __NetBSD__
		908	/* kqueue is borked on everything but netbsd apparently */
		909	/* it usually doesn't work correctly on anything but sockets and pipes */
		910	flags &= ~EVBACKEND_KQUEUE;
		911	#endif
		912	#ifdef __APPLE__
		913	// flags &= ~EVBACKEND_KQUEUE; for documentation
		914	flags &= ~EVBACKEND_POLL;
		915	#endif
		916
		917	return flags;
		918	}
		919
		920	unsigned int
		921	ev_embeddable_backends (void)
		922	{
		923	return EVBACKEND_EPOLL
		924	| EVBACKEND_KQUEUE
		925	| EVBACKEND_PORT;
		926	}
		927
		928	unsigned int
		929	ev_backend (EV_P)
		930	{
		931	return backend;
		932	}
		933
		934	unsigned int
		935	ev_loop_count (EV_P)
		936	{
		937	return loop_count;
		938	}
		939
		940	static void noinline
		941	loop_init (EV_P_ unsigned int flags)
		942	{
		943	if (!backend)
459	{	944	{
460	#if EV_USE_MONOTONIC	945	#if EV_USE_MONOTONIC
461	{	946	{
462	struct timespec ts;	947	struct timespec ts;
463	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	948	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
464	have_monotonic = 1;	949	have_monotonic = 1;
465	}	950	}
466	#endif	951	#endif
467		952
468	ev_now = ev_time ();	953	ev_rt_now = ev_time ();
469	now = get_clock ();	954	mn_now = get_clock ();
		955	now_floor = mn_now;
470	diff = ev_now - now;	956	rtmn_diff = ev_rt_now - mn_now;
471		957
472	if (pipe (sigpipe))	958	/* pid check not overridable via env */
473	return 0;	959	#ifndef _WIN32
		960	if (flags & EVFLAG_FORKCHECK)
		961	curpid = getpid ();
		962	#endif
474		963
475	ev_method = EVMETHOD_NONE;	964	if (!(flags & EVFLAG_NOENV)
		965	&& !enable_secure ()
		966	&& getenv ("LIBEV_FLAGS"))
		967	flags = atoi (getenv ("LIBEV_FLAGS"));
		968
		969	if (!(flags & 0x0000ffffUL))
		970	flags |= ev_recommended_backends ();
		971
		972	backend = 0;
		973	backend_fd = -1;
		974	#if EV_USE_INOTIFY
		975	fs_fd = -2;
		976	#endif
		977
		978	#if EV_USE_PORT
		979	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		980	#endif
		981	#if EV_USE_KQUEUE
		982	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
		983	#endif
476	#if EV_USE_EPOLL	984	#if EV_USE_EPOLL
477	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	985	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
		986	#endif
		987	#if EV_USE_POLL
		988	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
478	#endif	989	#endif
479	#if EV_USE_SELECT	990	#if EV_USE_SELECT
480	if (ev_method == EVMETHOD_NONE) select_init (flags);	991	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
481	#endif	992	#endif
482		993
483	if (ev_method)	994	ev_init (&sigev, sigcb);
		995	ev_set_priority (&sigev, EV_MAXPRI);
		996	}
		997	}
		998
		999	static void noinline
		1000	loop_destroy (EV_P)
		1001	{
		1002	int i;
		1003
		1004	#if EV_USE_INOTIFY
		1005	if (fs_fd >= 0)
		1006	close (fs_fd);
		1007	#endif
		1008
		1009	if (backend_fd >= 0)
		1010	close (backend_fd);
		1011
		1012	#if EV_USE_PORT
		1013	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		1014	#endif
		1015	#if EV_USE_KQUEUE
		1016	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		1017	#endif
		1018	#if EV_USE_EPOLL
		1019	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		1020	#endif
		1021	#if EV_USE_POLL
		1022	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		1023	#endif
		1024	#if EV_USE_SELECT
		1025	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		1026	#endif
		1027
		1028	for (i = NUMPRI; i--; )
		1029	{
		1030	array_free (pending, [i]);
		1031	#if EV_IDLE_ENABLE
		1032	array_free (idle, [i]);
		1033	#endif
		1034	}
		1035
		1036	/* have to use the microsoft-never-gets-it-right macro */
		1037	array_free (fdchange, EMPTY);
		1038	array_free (timer, EMPTY);
		1039	#if EV_PERIODIC_ENABLE
		1040	array_free (periodic, EMPTY);
		1041	#endif
		1042	array_free (prepare, EMPTY);
		1043	array_free (check, EMPTY);
		1044
		1045	backend = 0;
		1046	}
		1047
		1048	void inline_size infy_fork (EV_P);
		1049
		1050	void inline_size
		1051	loop_fork (EV_P)
		1052	{
		1053	#if EV_USE_PORT
		1054	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		1055	#endif
		1056	#if EV_USE_KQUEUE
		1057	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		1058	#endif
		1059	#if EV_USE_EPOLL
		1060	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		1061	#endif
		1062	#if EV_USE_INOTIFY
		1063	infy_fork (EV_A);
		1064	#endif
		1065
		1066	if (ev_is_active (&sigev))
		1067	{
		1068	/* default loop */
		1069
		1070	ev_ref (EV_A);
		1071	ev_io_stop (EV_A_ &sigev);
		1072	close (sigpipe [0]);
		1073	close (sigpipe [1]);
		1074
		1075	while (pipe (sigpipe))
		1076	syserr ("(libev) error creating pipe");
		1077
		1078	siginit (EV_A);
		1079	}
		1080
		1081	postfork = 0;
		1082	}
		1083
		1084	#if EV_MULTIPLICITY
		1085	struct ev_loop *
		1086	ev_loop_new (unsigned int flags)
		1087	{
		1088	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		1089
		1090	memset (loop, 0, sizeof (struct ev_loop));
		1091
		1092	loop_init (EV_A_ flags);
		1093
		1094	if (ev_backend (EV_A))
		1095	return loop;
		1096
		1097	return 0;
		1098	}
		1099
		1100	void
		1101	ev_loop_destroy (EV_P)
		1102	{
		1103	loop_destroy (EV_A);
		1104	ev_free (loop);
		1105	}
		1106
		1107	void
		1108	ev_loop_fork (EV_P)
		1109	{
		1110	postfork = 1;
		1111	}
		1112
		1113	#endif
		1114
		1115	#if EV_MULTIPLICITY
		1116	struct ev_loop *
		1117	ev_default_loop_init (unsigned int flags)
		1118	#else
		1119	int
		1120	ev_default_loop (unsigned int flags)
		1121	#endif
		1122	{
		1123	if (sigpipe [0] == sigpipe [1])
		1124	if (pipe (sigpipe))
		1125	return 0;
		1126
		1127	if (!ev_default_loop_ptr)
		1128	{
		1129	#if EV_MULTIPLICITY
		1130	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		1131	#else
		1132	ev_default_loop_ptr = 1;
		1133	#endif
		1134
		1135	loop_init (EV_A_ flags);
		1136
		1137	if (ev_backend (EV_A))
484	{	1138	{
485	ev_watcher_init (&sigev, sigcb);
486	siginit ();	1139	siginit (EV_A);
487		1140
		1141	#ifndef _WIN32
488	ev_signal_init (&childev, childcb, SIGCHLD);	1142	ev_signal_init (&childev, childcb, SIGCHLD);
		1143	ev_set_priority (&childev, EV_MAXPRI);
489	ev_signal_start (&childev);	1144	ev_signal_start (EV_A_ &childev);
		1145	ev_unref (EV_A); /* child watcher should not keep loop alive */
		1146	#endif
490	}	1147	}
		1148	else
		1149	ev_default_loop_ptr = 0;
491	}	1150	}
492		1151
493	return ev_method;	1152	return ev_default_loop_ptr;
		1153	}
		1154
		1155	void
		1156	ev_default_destroy (void)
		1157	{
		1158	#if EV_MULTIPLICITY
		1159	struct ev_loop *loop = ev_default_loop_ptr;
		1160	#endif
		1161
		1162	#ifndef _WIN32
		1163	ev_ref (EV_A); /* child watcher */
		1164	ev_signal_stop (EV_A_ &childev);
		1165	#endif
		1166
		1167	ev_ref (EV_A); /* signal watcher */
		1168	ev_io_stop (EV_A_ &sigev);
		1169
		1170	close (sigpipe [0]); sigpipe [0] = 0;
		1171	close (sigpipe [1]); sigpipe [1] = 0;
		1172
		1173	loop_destroy (EV_A);
		1174	}
		1175
		1176	void
		1177	ev_default_fork (void)
		1178	{
		1179	#if EV_MULTIPLICITY
		1180	struct ev_loop *loop = ev_default_loop_ptr;
		1181	#endif
		1182
		1183	if (backend)
		1184	postfork = 1;
494	}	1185	}
495		1186
496	/*****************************************************************************/	1187	/*****************************************************************************/
497		1188
498	void	1189	void
499	ev_fork_prepare (void)	1190	ev_invoke (EV_P_ void *w, int revents)
500	{	1191	{
501	/* nop */	1192	EV_CB_INVOKE ((W)w, revents);
502	}	1193	}
503		1194
504	void	1195	void inline_speed
505	ev_fork_parent (void)
506	{
507	/* nop */
508	}
509
510	void
511	ev_fork_child (void)
512	{
513	#if EV_USE_EPOLL
514	if (ev_method == EVMETHOD_EPOLL)
515	epoll_postfork_child ();
516	#endif
517
518	ev_io_stop (&sigev);
519	close (sigpipe [0]);
520	close (sigpipe [1]);
521	pipe (sigpipe);
522	siginit ();
523	}
524
525	/*****************************************************************************/
526
527	static void
528	call_pending (void)	1196	call_pending (EV_P)
529	{	1197	{
		1198	int pri;
		1199
		1200	for (pri = NUMPRI; pri--; )
530	while (pendingcnt)	1201	while (pendingcnt [pri])
531	{	1202	{
532	ANPENDING *p = pendings + --pendingcnt;	1203	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
533		1204
534	if (p->w)	1205	if (expect_true (p->w))
535	{	1206	{
		1207	/*assert (("non-pending watcher on pending list", p->w->pending));*/
		1208
536	p->w->pending = 0;	1209	p->w->pending = 0;
537	p->w->cb (p->w, p->events);	1210	EV_CB_INVOKE (p->w, p->events);
538	}	1211	}
539	}	1212	}
540	}	1213	}
541		1214
542	static void	1215	void inline_size
543	timers_reify (void)	1216	timers_reify (EV_P)
544	{	1217	{
545	while (timercnt && timers [0]->at <= now)	1218	while (timercnt && ((WT)timers [0])->at <= mn_now)
546	{	1219	{
547	struct ev_timer *w = timers [0];	1220	ev_timer *w = timers [0];
		1221
		1222	/*assert (("inactive timer on timer heap detected", ev_is_active (w)));*/
548		1223
549	/* first reschedule or stop timer */	1224	/* first reschedule or stop timer */
550	if (w->repeat)	1225	if (w->repeat)
551	{	1226	{
552	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1227	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1228
553	w->at = now + w->repeat;	1229	((WT)w)->at += w->repeat;
		1230	if (((WT)w)->at < mn_now)
		1231	((WT)w)->at = mn_now;
		1232
554	downheap ((WT *)timers, timercnt, 0);	1233	downheap ((WT *)timers, timercnt, 0);
555	}	1234	}
556	else	1235	else
557	ev_timer_stop (w); /* nonrepeating: stop timer */	1236	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
558		1237
559	event ((W)w, EV_TIMEOUT);	1238	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
560	}	1239	}
561	}	1240	}
562		1241
563	static void	1242	#if EV_PERIODIC_ENABLE
		1243	void inline_size
564	periodics_reify (void)	1244	periodics_reify (EV_P)
565	{	1245	{
566	while (periodiccnt && periodics [0]->at <= ev_now)	1246	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
567	{	1247	{
568	struct ev_periodic *w = periodics [0];	1248	ev_periodic *w = periodics [0];
		1249
		1250	/*assert (("inactive timer on periodic heap detected", ev_is_active (w)));*/
569		1251
570	/* first reschedule or stop timer */	1252	/* first reschedule or stop timer */
571	if (w->interval)	1253	if (w->reschedule_cb)
572	{	1254	{
		1255	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + TIME_EPSILON);
		1256	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1257	downheap ((WT *)periodics, periodiccnt, 0);
		1258	}
		1259	else if (w->interval)
		1260	{
573	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1261	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1262	if (((WT)w)->at - ev_rt_now <= TIME_EPSILON) ((WT)w)->at += w->interval;
574	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1263	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
575	downheap ((WT *)periodics, periodiccnt, 0);	1264	downheap ((WT *)periodics, periodiccnt, 0);
576	}	1265	}
577	else	1266	else
578	ev_periodic_stop (w); /* nonrepeating: stop timer */	1267	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
579		1268
580	event ((W)w, EV_PERIODIC);	1269	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
581	}	1270	}
582	}	1271	}
583		1272
584	static void	1273	static void noinline
585	periodics_reschedule (ev_tstamp diff)	1274	periodics_reschedule (EV_P)
586	{	1275	{
587	int i;	1276	int i;
588		1277
589	/* adjust periodics after time jump */	1278	/* adjust periodics after time jump */
590	for (i = 0; i < periodiccnt; ++i)	1279	for (i = 0; i < periodiccnt; ++i)
591	{	1280	{
592	struct ev_periodic *w = periodics [i];	1281	ev_periodic *w = periodics [i];
593		1282
		1283	if (w->reschedule_cb)
		1284	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
594	if (w->interval)	1285	else if (w->interval)
		1286	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1287	}
		1288
		1289	/* now rebuild the heap */
		1290	for (i = periodiccnt >> 1; i--; )
		1291	downheap ((WT *)periodics, periodiccnt, i);
		1292	}
		1293	#endif
		1294
		1295	#if EV_IDLE_ENABLE
		1296	void inline_size
		1297	idle_reify (EV_P)
		1298	{
		1299	if (expect_false (idleall))
		1300	{
		1301	int pri;
		1302
		1303	for (pri = NUMPRI; pri--; )
595	{	1304	{
596	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1305	if (pendingcnt [pri])
		1306	break;
597		1307
598	if (fabs (diff) >= 1e-4)	1308	if (idlecnt [pri])
599	{	1309	{
600	ev_periodic_stop (w);	1310	queue_events (EV_A_ (W *)idles [pri], idlecnt [pri], EV_IDLE);
601	ev_periodic_start (w);	1311	break;
602
603	i = 0; /* restart loop, inefficient, but time jumps should be rare */
604	}	1312	}
605	}	1313	}
606	}	1314	}
607	}	1315	}
		1316	#endif
608		1317
609	static void	1318	void inline_speed
610	time_update (void)	1319	time_update (EV_P_ ev_tstamp max_block)
611	{	1320	{
612	int i;	1321	int i;
613		1322
614	ev_now = ev_time ();	1323	#if EV_USE_MONOTONIC
615
616	if (have_monotonic)	1324	if (expect_true (have_monotonic))
617	{	1325	{
618	ev_tstamp odiff = diff;	1326	ev_tstamp odiff = rtmn_diff;
619		1327
620	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1328	mn_now = get_clock ();
		1329
		1330	/* only fetch the realtime clock every 0.5*MIN_TIMEJUMP seconds */
		1331	/* interpolate in the meantime */
		1332	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
621	{	1333	{
622	now = get_clock ();	1334	ev_rt_now = rtmn_diff + mn_now;
		1335	return;
		1336	}
		1337
		1338	now_floor = mn_now;
		1339	ev_rt_now = ev_time ();
		1340
		1341	/* loop a few times, before making important decisions.
		1342	* on the choice of "4": one iteration isn't enough,
		1343	* in case we get preempted during the calls to
		1344	* ev_time and get_clock. a second call is almost guaranteed
		1345	* to succeed in that case, though. and looping a few more times
		1346	* doesn't hurt either as we only do this on time-jumps or
		1347	* in the unlikely event of having been preempted here.
		1348	*/
		1349	for (i = 4; --i; )
		1350	{
623	diff = ev_now - now;	1351	rtmn_diff = ev_rt_now - mn_now;
624		1352
625	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1353	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
626	return; /* all is well */	1354	return; /* all is well */
627		1355
628	ev_now = ev_time ();	1356	ev_rt_now = ev_time ();
		1357	mn_now = get_clock ();
		1358	now_floor = mn_now;
629	}	1359	}
630		1360
		1361	# if EV_PERIODIC_ENABLE
631	periodics_reschedule (diff - odiff);	1362	periodics_reschedule (EV_A);
		1363	# endif
632	/* no timer adjustment, as the monotonic clock doesn't jump */	1364	/* no timer adjustment, as the monotonic clock doesn't jump */
		1365	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
633	}	1366	}
634	else	1367	else
		1368	#endif
635	{	1369	{
636	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)	1370	ev_rt_now = ev_time ();
		1371
		1372	if (expect_false (mn_now > ev_rt_now || ev_rt_now > mn_now + max_block + MIN_TIMEJUMP))
637	{	1373	{
		1374	#if EV_PERIODIC_ENABLE
638	periodics_reschedule (ev_now - now);	1375	periodics_reschedule (EV_A);
639		1376	#endif
640	/* adjust timers. this is easy, as the offset is the same for all */	1377	/* adjust timers. this is easy, as the offset is the same for all of them */
641	for (i = 0; i < timercnt; ++i)	1378	for (i = 0; i < timercnt; ++i)
642	timers [i]->at += diff;	1379	((WT)timers [i])->at += ev_rt_now - mn_now;
643	}	1380	}
644		1381
645	now = ev_now;	1382	mn_now = ev_rt_now;
646	}	1383	}
647	}	1384	}
648		1385
649	int ev_loop_done;	1386	void
		1387	ev_ref (EV_P)
		1388	{
		1389	++activecnt;
		1390	}
650		1391
		1392	void
		1393	ev_unref (EV_P)
		1394	{
		1395	--activecnt;
		1396	}
		1397
		1398	static int loop_done;
		1399
		1400	void
651	void ev_loop (int flags)	1401	ev_loop (EV_P_ int flags)
652	{	1402	{
653	double block;
654	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1403	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1404	? EVUNLOOP_ONE
		1405	: EVUNLOOP_CANCEL;
		1406
		1407	call_pending (EV_A); /* in case we recurse, ensure ordering stays nice and clean */
655		1408
656	do	1409	do
657	{	1410	{
		1411	#ifndef _WIN32
		1412	if (expect_false (curpid)) /* penalise the forking check even more */
		1413	if (expect_false (getpid () != curpid))
		1414	{
		1415	curpid = getpid ();
		1416	postfork = 1;
		1417	}
		1418	#endif
		1419
		1420	#if EV_FORK_ENABLE
		1421	/* we might have forked, so queue fork handlers */
		1422	if (expect_false (postfork))
		1423	if (forkcnt)
		1424	{
		1425	queue_events (EV_A_ (W *)forks, forkcnt, EV_FORK);
		1426	call_pending (EV_A);
		1427	}
		1428	#endif
		1429
658	/* queue check watchers (and execute them) */	1430	/* queue prepare watchers (and execute them) */
659	if (preparecnt)	1431	if (expect_false (preparecnt))
660	{	1432	{
661	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1433	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
662	call_pending ();	1434	call_pending (EV_A);
663	}	1435	}
664		1436
		1437	if (expect_false (!activecnt))
		1438	break;
		1439
		1440	/* we might have forked, so reify kernel state if necessary */
		1441	if (expect_false (postfork))
		1442	loop_fork (EV_A);
		1443
665	/* update fd-related kernel structures */	1444	/* update fd-related kernel structures */
666	fd_reify ();	1445	fd_reify (EV_A);
667		1446
668	/* calculate blocking time */	1447	/* calculate blocking time */
		1448	{
		1449	ev_tstamp block;
669		1450
670	/* we only need this for !monotonic clockor timers, but as we basically	1451	if (expect_false (flags & EVLOOP_NONBLOCK || idleall || !activecnt))
671	always have timers, we just calculate it always */	1452	block = 0.; /* do not block at all */
672	ev_now = ev_time ();
673
674	if (flags & EVLOOP_NONBLOCK || idlecnt)
675	block = 0.;
676	else	1453	else
677	{	1454	{
		1455	/* update time to cancel out callback processing overhead */
		1456	time_update (EV_A_ 1e100);
		1457
678	block = MAX_BLOCKTIME;	1458	block = MAX_BLOCKTIME;
679		1459
680	if (timercnt)	1460	if (timercnt)
681	{	1461	{
682	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1462	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
683	if (block > to) block = to;	1463	if (block > to) block = to;
684	}	1464	}
685		1465
		1466	#if EV_PERIODIC_ENABLE
686	if (periodiccnt)	1467	if (periodiccnt)
687	{	1468	{
688	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1469	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
689	if (block > to) block = to;	1470	if (block > to) block = to;
690	}	1471	}
		1472	#endif
691		1473
692	if (block < 0.) block = 0.;	1474	if (expect_false (block < 0.)) block = 0.;
693	}	1475	}
694		1476
695	method_poll (block);	1477	++loop_count;
		1478	backend_poll (EV_A_ block);
696		1479
697	/* update ev_now, do magic */	1480	/* update ev_rt_now, do magic */
698	time_update ();	1481	time_update (EV_A_ block);
		1482	}
699		1483
700	/* queue pending timers and reschedule them */	1484	/* queue pending timers and reschedule them */
701	timers_reify (); /* relative timers called last */	1485	timers_reify (EV_A); /* relative timers called last */
		1486	#if EV_PERIODIC_ENABLE
702	periodics_reify (); /* absolute timers called first */	1487	periodics_reify (EV_A); /* absolute timers called first */
		1488	#endif
703		1489
		1490	#if EV_IDLE_ENABLE
704	/* queue idle watchers unless io or timers are pending */	1491	/* queue idle watchers unless other events are pending */
705	if (!pendingcnt)	1492	idle_reify (EV_A);
706	queue_events ((W *)idles, idlecnt, EV_IDLE);	1493	#endif
707		1494
708	/* queue check watchers, to be executed first */	1495	/* queue check watchers, to be executed first */
709	if (checkcnt)	1496	if (expect_false (checkcnt))
710	queue_events ((W *)checks, checkcnt, EV_CHECK);	1497	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
711		1498
712	call_pending ();	1499	call_pending (EV_A);
713	}
714	while (!ev_loop_done);
715		1500
716	if (ev_loop_done != 2)	1501	}
		1502	while (expect_true (activecnt && !loop_done));
		1503
		1504	if (loop_done == EVUNLOOP_ONE)
		1505	loop_done = EVUNLOOP_CANCEL;
		1506	}
		1507
		1508	void
		1509	ev_unloop (EV_P_ int how)
		1510	{
717	ev_loop_done = 0;	1511	loop_done = how;
718	}	1512	}
719		1513
720	/*****************************************************************************/	1514	/*****************************************************************************/
721		1515
722	static void	1516	void inline_size
723	wlist_add (WL *head, WL elem)	1517	wlist_add (WL *head, WL elem)
724	{	1518	{
725	elem->next = *head;	1519	elem->next = *head;
726	*head = elem;	1520	*head = elem;
727	}	1521	}
728		1522
729	static void	1523	void inline_size
730	wlist_del (WL *head, WL elem)	1524	wlist_del (WL *head, WL elem)
731	{	1525	{
732	while (*head)	1526	while (*head)
733	{	1527	{
734	if (*head == elem)	1528	if (*head == elem)
…		…
739		1533
740	head = &(*head)->next;	1534	head = &(*head)->next;
741	}	1535	}
742	}	1536	}
743		1537
744	static void	1538	void inline_speed
745	ev_clear_pending (W w)	1539	clear_pending (EV_P_ W w)
746	{	1540	{
747	if (w->pending)	1541	if (w->pending)
748	{	1542	{
749	pendings [w->pending - 1].w = 0;	1543	pendings [ABSPRI (w)][w->pending - 1].w = 0;
750	w->pending = 0;	1544	w->pending = 0;
751	}	1545	}
752	}	1546	}
753		1547
754	static void	1548	int
		1549	ev_clear_pending (EV_P_ void *w)
		1550	{
		1551	W w_ = (W)w;
		1552	int pending = w_->pending;
		1553
		1554	if (expect_true (pending))
		1555	{
		1556	ANPENDING *p = pendings [ABSPRI (w_)] + pending - 1;
		1557	w_->pending = 0;
		1558	p->w = 0;
		1559	return p->events;
		1560	}
		1561	else
		1562	return 0;
		1563	}
		1564
		1565	void inline_size
		1566	pri_adjust (EV_P_ W w)
		1567	{
		1568	int pri = w->priority;
		1569	pri = pri < EV_MINPRI ? EV_MINPRI : pri;
		1570	pri = pri > EV_MAXPRI ? EV_MAXPRI : pri;
		1571	w->priority = pri;
		1572	}
		1573
		1574	void inline_speed
755	ev_start (W w, int active)	1575	ev_start (EV_P_ W w, int active)
756	{	1576	{
		1577	pri_adjust (EV_A_ w);
757	w->active = active;	1578	w->active = active;
		1579	ev_ref (EV_A);
758	}	1580	}
759		1581
760	static void	1582	void inline_size
761	ev_stop (W w)	1583	ev_stop (EV_P_ W w)
762	{	1584	{
		1585	ev_unref (EV_A);
763	w->active = 0;	1586	w->active = 0;
764	}	1587	}
765		1588
766	/*****************************************************************************/	1589	/*****************************************************************************/
767		1590
768	void	1591	void noinline
769	ev_io_start (struct ev_io *w)	1592	ev_io_start (EV_P_ ev_io *w)
770	{	1593	{
771	int fd = w->fd;	1594	int fd = w->fd;
772		1595
773	if (ev_is_active (w))	1596	if (expect_false (ev_is_active (w)))
774	return;	1597	return;
775		1598
776	assert (("ev_io_start called with negative fd", fd >= 0));	1599	assert (("ev_io_start called with negative fd", fd >= 0));
777		1600
778	ev_start ((W)w, 1);	1601	ev_start (EV_A_ (W)w, 1);
779	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1602	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
780	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1603	wlist_add ((WL *)&anfds[fd].head, (WL)w);
781		1604
782	fd_change (fd);	1605	fd_change (EV_A_ fd);
783	}	1606	}
784		1607
785	void	1608	void noinline
786	ev_io_stop (struct ev_io *w)	1609	ev_io_stop (EV_P_ ev_io *w)
787	{	1610	{
788	ev_clear_pending ((W)w);	1611	clear_pending (EV_A_ (W)w);
789	if (!ev_is_active (w))	1612	if (expect_false (!ev_is_active (w)))
790	return;	1613	return;
		1614
		1615	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
791		1616
792	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1617	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
793	ev_stop ((W)w);	1618	ev_stop (EV_A_ (W)w);
794		1619
795	fd_change (w->fd);	1620	fd_change (EV_A_ w->fd);
796	}	1621	}
797		1622
798	void	1623	void noinline
799	ev_timer_start (struct ev_timer *w)	1624	ev_timer_start (EV_P_ ev_timer *w)
800	{	1625	{
801	if (ev_is_active (w))	1626	if (expect_false (ev_is_active (w)))
802	return;	1627	return;
803		1628
804	w->at += now;	1629	((WT)w)->at += mn_now;
805		1630
806	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1631	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
807		1632
808	ev_start ((W)w, ++timercnt);	1633	ev_start (EV_A_ (W)w, ++timercnt);
809	array_needsize (timers, timermax, timercnt, );	1634	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
810	timers [timercnt - 1] = w;	1635	timers [timercnt - 1] = w;
811	upheap ((WT *)timers, timercnt - 1);	1636	upheap ((WT *)timers, timercnt - 1);
812	}
813		1637
814	void	1638	/*assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));*/
		1639	}
		1640
		1641	void noinline
815	ev_timer_stop (struct ev_timer *w)	1642	ev_timer_stop (EV_P_ ev_timer *w)
816	{	1643	{
817	ev_clear_pending ((W)w);	1644	clear_pending (EV_A_ (W)w);
818	if (!ev_is_active (w))	1645	if (expect_false (!ev_is_active (w)))
819	return;	1646	return;
820		1647
821	if (w->active < timercnt--)	1648	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1649
		1650	{
		1651	int active = ((W)w)->active;
		1652
		1653	if (expect_true (--active < --timercnt))
822	{	1654	{
823	timers [w->active - 1] = timers [timercnt];	1655	timers [active] = timers [timercnt];
824	downheap ((WT *)timers, timercnt, w->active - 1);	1656	adjustheap ((WT *)timers, timercnt, active);
825	}	1657	}
		1658	}
826		1659
827	w->at = w->repeat;	1660	((WT)w)->at -= mn_now;
828		1661
829	ev_stop ((W)w);	1662	ev_stop (EV_A_ (W)w);
830	}	1663	}
831		1664
832	void	1665	void noinline
833	ev_timer_again (struct ev_timer *w)	1666	ev_timer_again (EV_P_ ev_timer *w)
834	{	1667	{
835	if (ev_is_active (w))	1668	if (ev_is_active (w))
836	{	1669	{
837	if (w->repeat)	1670	if (w->repeat)
838	{	1671	{
839	w->at = now + w->repeat;	1672	((WT)w)->at = mn_now + w->repeat;
840	downheap ((WT *)timers, timercnt, w->active - 1);	1673	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
841	}	1674	}
842	else	1675	else
843	ev_timer_stop (w);	1676	ev_timer_stop (EV_A_ w);
844	}	1677	}
845	else if (w->repeat)	1678	else if (w->repeat)
		1679	{
		1680	w->at = w->repeat;
846	ev_timer_start (w);	1681	ev_timer_start (EV_A_ w);
		1682	}
847	}	1683	}
848		1684
849	void	1685	#if EV_PERIODIC_ENABLE
		1686	void noinline
850	ev_periodic_start (struct ev_periodic *w)	1687	ev_periodic_start (EV_P_ ev_periodic *w)
851	{	1688	{
852	if (ev_is_active (w))	1689	if (expect_false (ev_is_active (w)))
853	return;	1690	return;
854		1691
		1692	if (w->reschedule_cb)
		1693	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1694	else if (w->interval)
		1695	{
855	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1696	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
856
857	/* this formula differs from the one in periodic_reify because we do not always round up */	1697	/* this formula differs from the one in periodic_reify because we do not always round up */
858	if (w->interval)
859	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1698	((WT)w)->at = w->offset + ceil ((ev_rt_now - w->offset) / w->interval) * w->interval;
		1699	}
		1700	else
		1701	((WT)w)->at = w->offset;
860		1702
861	ev_start ((W)w, ++periodiccnt);	1703	ev_start (EV_A_ (W)w, ++periodiccnt);
862	array_needsize (periodics, periodicmax, periodiccnt, );	1704	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
863	periodics [periodiccnt - 1] = w;	1705	periodics [periodiccnt - 1] = w;
864	upheap ((WT *)periodics, periodiccnt - 1);	1706	upheap ((WT *)periodics, periodiccnt - 1);
865	}
866		1707
867	void	1708	/*assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));*/
		1709	}
		1710
		1711	void noinline
868	ev_periodic_stop (struct ev_periodic *w)	1712	ev_periodic_stop (EV_P_ ev_periodic *w)
869	{	1713	{
870	ev_clear_pending ((W)w);	1714	clear_pending (EV_A_ (W)w);
871	if (!ev_is_active (w))	1715	if (expect_false (!ev_is_active (w)))
872	return;	1716	return;
873		1717
874	if (w->active < periodiccnt--)	1718	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1719
		1720	{
		1721	int active = ((W)w)->active;
		1722
		1723	if (expect_true (--active < --periodiccnt))
875	{	1724	{
876	periodics [w->active - 1] = periodics [periodiccnt];	1725	periodics [active] = periodics [periodiccnt];
877	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1726	adjustheap ((WT *)periodics, periodiccnt, active);
878	}	1727	}
		1728	}
879		1729
880	ev_stop ((W)w);	1730	ev_stop (EV_A_ (W)w);
881	}	1731	}
882		1732
883	void	1733	void noinline
		1734	ev_periodic_again (EV_P_ ev_periodic *w)
		1735	{
		1736	/* TODO: use adjustheap and recalculation */
		1737	ev_periodic_stop (EV_A_ w);
		1738	ev_periodic_start (EV_A_ w);
		1739	}
		1740	#endif
		1741
		1742	#ifndef SA_RESTART
		1743	# define SA_RESTART 0
		1744	#endif
		1745
		1746	void noinline
884	ev_signal_start (struct ev_signal *w)	1747	ev_signal_start (EV_P_ ev_signal *w)
885	{	1748	{
		1749	#if EV_MULTIPLICITY
		1750	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1751	#endif
886	if (ev_is_active (w))	1752	if (expect_false (ev_is_active (w)))
887	return;	1753	return;
888		1754
889	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1755	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
890		1756
891	ev_start ((W)w, 1);	1757	{
		1758	#ifndef _WIN32
		1759	sigset_t full, prev;
		1760	sigfillset (&full);
		1761	sigprocmask (SIG_SETMASK, &full, &prev);
		1762	#endif
		1763
892	array_needsize (signals, signalmax, w->signum, signals_init);	1764	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
		1765
		1766	#ifndef _WIN32
		1767	sigprocmask (SIG_SETMASK, &prev, 0);
		1768	#endif
		1769	}
		1770
		1771	ev_start (EV_A_ (W)w, 1);
893	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1772	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
894		1773
895	if (!w->next)	1774	if (!((WL)w)->next)
896	{	1775	{
		1776	#if _WIN32
		1777	signal (w->signum, sighandler);
		1778	#else
897	struct sigaction sa;	1779	struct sigaction sa;
898	sa.sa_handler = sighandler;	1780	sa.sa_handler = sighandler;
899	sigfillset (&sa.sa_mask);	1781	sigfillset (&sa.sa_mask);
900	sa.sa_flags = 0;	1782	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
901	sigaction (w->signum, &sa, 0);	1783	sigaction (w->signum, &sa, 0);
		1784	#endif
902	}	1785	}
903	}	1786	}
904		1787
905	void	1788	void noinline
906	ev_signal_stop (struct ev_signal *w)	1789	ev_signal_stop (EV_P_ ev_signal *w)
907	{	1790	{
908	ev_clear_pending ((W)w);	1791	clear_pending (EV_A_ (W)w);
909	if (!ev_is_active (w))	1792	if (expect_false (!ev_is_active (w)))
910	return;	1793	return;
911		1794
912	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1795	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
913	ev_stop ((W)w);	1796	ev_stop (EV_A_ (W)w);
914		1797
915	if (!signals [w->signum - 1].head)	1798	if (!signals [w->signum - 1].head)
916	signal (w->signum, SIG_DFL);	1799	signal (w->signum, SIG_DFL);
917	}	1800	}
918		1801
919	void	1802	void
920	ev_idle_start (struct ev_idle *w)	1803	ev_child_start (EV_P_ ev_child *w)
921	{	1804	{
		1805	#if EV_MULTIPLICITY
		1806	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1807	#endif
922	if (ev_is_active (w))	1808	if (expect_false (ev_is_active (w)))
923	return;	1809	return;
924		1810
925	ev_start ((W)w, ++idlecnt);	1811	ev_start (EV_A_ (W)w, 1);
926	array_needsize (idles, idlemax, idlecnt, );	1812	wlist_add ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
927	idles [idlecnt - 1] = w;
928	}	1813	}
929		1814
930	void	1815	void
931	ev_idle_stop (struct ev_idle *w)	1816	ev_child_stop (EV_P_ ev_child *w)
932	{	1817	{
933	ev_clear_pending ((W)w);	1818	clear_pending (EV_A_ (W)w);
934	if (ev_is_active (w))	1819	if (expect_false (!ev_is_active (w)))
935	return;	1820	return;
936		1821
937	idles [w->active - 1] = idles [--idlecnt];	1822	wlist_del ((WL *)&childs [w->pid & (EV_PID_HASHSIZE - 1)], (WL)w);
938	ev_stop ((W)w);	1823	ev_stop (EV_A_ (W)w);
939	}	1824	}
940		1825
		1826	#if EV_STAT_ENABLE
		1827
		1828	# ifdef _WIN32
		1829	# undef lstat
		1830	# define lstat(a,b) _stati64 (a,b)
		1831	# endif
		1832
		1833	#define DEF_STAT_INTERVAL 5.0074891
		1834	#define MIN_STAT_INTERVAL 0.1074891
		1835
		1836	static void noinline stat_timer_cb (EV_P_ ev_timer *w_, int revents);
		1837
		1838	#if EV_USE_INOTIFY
		1839	# define EV_INOTIFY_BUFSIZE 8192
		1840
		1841	static void noinline
		1842	infy_add (EV_P_ ev_stat *w)
		1843	{
		1844	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);
		1845
		1846	if (w->wd < 0)
		1847	{
		1848	ev_timer_start (EV_A_ &w->timer); /* this is not race-free, so we still need to recheck periodically */
		1849
		1850	/* monitor some parent directory for speedup hints */
		1851	if ((errno == ENOENT || errno == EACCES) && strlen (w->path) < 4096)
		1852	{
		1853	char path [4096];
		1854	strcpy (path, w->path);
		1855
		1856	do
		1857	{
		1858	int mask = IN_MASK_ADD | IN_DELETE_SELF | IN_MOVE_SELF
		1859	| (errno == EACCES ? IN_ATTRIB : IN_CREATE | IN_MOVED_TO);
		1860
		1861	char *pend = strrchr (path, '/');
		1862
		1863	if (!pend)
		1864	break; /* whoops, no '/', complain to your admin */
		1865
		1866	*pend = 0;
		1867	w->wd = inotify_add_watch (fs_fd, path, mask);
		1868	}
		1869	while (w->wd < 0 && (errno == ENOENT || errno == EACCES));
		1870	}
		1871	}
		1872	else
		1873	ev_timer_stop (EV_A_ &w->timer); /* we can watch this in a race-free way */
		1874
		1875	if (w->wd >= 0)
		1876	wlist_add (&fs_hash [w->wd & (EV_INOTIFY_HASHSIZE - 1)].head, (WL)w);
		1877	}
		1878
		1879	static void noinline
		1880	infy_del (EV_P_ ev_stat *w)
		1881	{
		1882	int slot;
		1883	int wd = w->wd;
		1884
		1885	if (wd < 0)
		1886	return;
		1887
		1888	w->wd = -2;
		1889	slot = wd & (EV_INOTIFY_HASHSIZE - 1);
		1890	wlist_del (&fs_hash [slot].head, (WL)w);
		1891
		1892	/* remove this watcher, if others are watching it, they will rearm */
		1893	inotify_rm_watch (fs_fd, wd);
		1894	}
		1895
		1896	static void noinline
		1897	infy_wd (EV_P_ int slot, int wd, struct inotify_event *ev)
		1898	{
		1899	if (slot < 0)
		1900	/* overflow, need to check for all hahs slots */
		1901	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1902	infy_wd (EV_A_ slot, wd, ev);
		1903	else
		1904	{
		1905	WL w_;
		1906
		1907	for (w_ = fs_hash [slot & (EV_INOTIFY_HASHSIZE - 1)].head; w_; )
		1908	{
		1909	ev_stat *w = (ev_stat *)w_;
		1910	w_ = w_->next; /* lets us remove this watcher and all before it */
		1911
		1912	if (w->wd == wd || wd == -1)
		1913	{
		1914	if (ev->mask & (IN_IGNORED | IN_UNMOUNT | IN_DELETE_SELF))
		1915	{
		1916	w->wd = -1;
		1917	infy_add (EV_A_ w); /* re-add, no matter what */
		1918	}
		1919
		1920	stat_timer_cb (EV_A_ &w->timer, 0);
		1921	}
		1922	}
		1923	}
		1924	}
		1925
		1926	static void
		1927	infy_cb (EV_P_ ev_io *w, int revents)
		1928	{
		1929	char buf [EV_INOTIFY_BUFSIZE];
		1930	struct inotify_event *ev = (struct inotify_event *)buf;
		1931	int ofs;
		1932	int len = read (fs_fd, buf, sizeof (buf));
		1933
		1934	for (ofs = 0; ofs < len; ofs += sizeof (struct inotify_event) + ev->len)
		1935	infy_wd (EV_A_ ev->wd, ev->wd, ev);
		1936	}
		1937
		1938	void inline_size
		1939	infy_init (EV_P)
		1940	{
		1941	if (fs_fd != -2)
		1942	return;
		1943
		1944	fs_fd = inotify_init ();
		1945
		1946	if (fs_fd >= 0)
		1947	{
		1948	ev_io_init (&fs_w, infy_cb, fs_fd, EV_READ);
		1949	ev_set_priority (&fs_w, EV_MAXPRI);
		1950	ev_io_start (EV_A_ &fs_w);
		1951	}
		1952	}
		1953
		1954	void inline_size
		1955	infy_fork (EV_P)
		1956	{
		1957	int slot;
		1958
		1959	if (fs_fd < 0)
		1960	return;
		1961
		1962	close (fs_fd);
		1963	fs_fd = inotify_init ();
		1964
		1965	for (slot = 0; slot < EV_INOTIFY_HASHSIZE; ++slot)
		1966	{
		1967	WL w_ = fs_hash [slot].head;
		1968	fs_hash [slot].head = 0;
		1969
		1970	while (w_)
		1971	{
		1972	ev_stat *w = (ev_stat *)w_;
		1973	w_ = w_->next; /* lets us add this watcher */
		1974
		1975	w->wd = -1;
		1976
		1977	if (fs_fd >= 0)
		1978	infy_add (EV_A_ w); /* re-add, no matter what */
		1979	else
		1980	ev_timer_start (EV_A_ &w->timer);
		1981	}
		1982
		1983	}
		1984	}
		1985
		1986	#endif
		1987
941	void	1988	void
		1989	ev_stat_stat (EV_P_ ev_stat *w)
		1990	{
		1991	if (lstat (w->path, &w->attr) < 0)
		1992	w->attr.st_nlink = 0;
		1993	else if (!w->attr.st_nlink)
		1994	w->attr.st_nlink = 1;
		1995	}
		1996
		1997	static void noinline
		1998	stat_timer_cb (EV_P_ ev_timer *w_, int revents)
		1999	{
		2000	ev_stat *w = (ev_stat *)(((char *)w_) - offsetof (ev_stat, timer));
		2001
		2002	/* we copy this here each the time so that */
		2003	/* prev has the old value when the callback gets invoked */
		2004	w->prev = w->attr;
		2005	ev_stat_stat (EV_A_ w);
		2006
		2007	/* memcmp doesn't work on netbsd, they.... do stuff to their struct stat */
		2008	if (
		2009	w->prev.st_dev != w->attr.st_dev
		2010	|| w->prev.st_ino != w->attr.st_ino
		2011	|| w->prev.st_mode != w->attr.st_mode
		2012	|| w->prev.st_nlink != w->attr.st_nlink
		2013	|| w->prev.st_uid != w->attr.st_uid
		2014	|| w->prev.st_gid != w->attr.st_gid
		2015	|| w->prev.st_rdev != w->attr.st_rdev
		2016	|| w->prev.st_size != w->attr.st_size
		2017	|| w->prev.st_atime != w->attr.st_atime
		2018	|| w->prev.st_mtime != w->attr.st_mtime
		2019	|| w->prev.st_ctime != w->attr.st_ctime
		2020	) {
		2021	#if EV_USE_INOTIFY
		2022	infy_del (EV_A_ w);
		2023	infy_add (EV_A_ w);
		2024	ev_stat_stat (EV_A_ w); /* avoid race... */
		2025	#endif
		2026
		2027	ev_feed_event (EV_A_ w, EV_STAT);
		2028	}
		2029	}
		2030
		2031	void
		2032	ev_stat_start (EV_P_ ev_stat *w)
		2033	{
		2034	if (expect_false (ev_is_active (w)))
		2035	return;
		2036
		2037	/* since we use memcmp, we need to clear any padding data etc. */
		2038	memset (&w->prev, 0, sizeof (ev_statdata));
		2039	memset (&w->attr, 0, sizeof (ev_statdata));
		2040
		2041	ev_stat_stat (EV_A_ w);
		2042
		2043	if (w->interval < MIN_STAT_INTERVAL)
		2044	w->interval = w->interval ? MIN_STAT_INTERVAL : DEF_STAT_INTERVAL;
		2045
		2046	ev_timer_init (&w->timer, stat_timer_cb, w->interval, w->interval);
		2047	ev_set_priority (&w->timer, ev_priority (w));
		2048
		2049	#if EV_USE_INOTIFY
		2050	infy_init (EV_A);
		2051
		2052	if (fs_fd >= 0)
		2053	infy_add (EV_A_ w);
		2054	else
		2055	#endif
		2056	ev_timer_start (EV_A_ &w->timer);
		2057
		2058	ev_start (EV_A_ (W)w, 1);
		2059	}
		2060
		2061	void
		2062	ev_stat_stop (EV_P_ ev_stat *w)
		2063	{
		2064	clear_pending (EV_A_ (W)w);
		2065	if (expect_false (!ev_is_active (w)))
		2066	return;
		2067
		2068	#if EV_USE_INOTIFY
		2069	infy_del (EV_A_ w);
		2070	#endif
		2071	ev_timer_stop (EV_A_ &w->timer);
		2072
		2073	ev_stop (EV_A_ (W)w);
		2074	}
		2075	#endif
		2076
		2077	#if EV_IDLE_ENABLE
		2078	void
		2079	ev_idle_start (EV_P_ ev_idle *w)
		2080	{
		2081	if (expect_false (ev_is_active (w)))
		2082	return;
		2083
		2084	pri_adjust (EV_A_ (W)w);
		2085
		2086	{
		2087	int active = ++idlecnt [ABSPRI (w)];
		2088
		2089	++idleall;
		2090	ev_start (EV_A_ (W)w, active);
		2091
		2092	array_needsize (ev_idle *, idles [ABSPRI (w)], idlemax [ABSPRI (w)], active, EMPTY2);
		2093	idles [ABSPRI (w)][active - 1] = w;
		2094	}
		2095	}
		2096
		2097	void
		2098	ev_idle_stop (EV_P_ ev_idle *w)
		2099	{
		2100	clear_pending (EV_A_ (W)w);
		2101	if (expect_false (!ev_is_active (w)))
		2102	return;
		2103
		2104	{
		2105	int active = ((W)w)->active;
		2106
		2107	idles [ABSPRI (w)][active - 1] = idles [ABSPRI (w)][--idlecnt [ABSPRI (w)]];
		2108	((W)idles [ABSPRI (w)][active - 1])->active = active;
		2109
		2110	ev_stop (EV_A_ (W)w);
		2111	--idleall;
		2112	}
		2113	}
		2114	#endif
		2115
		2116	void
942	ev_prepare_start (struct ev_prepare *w)	2117	ev_prepare_start (EV_P_ ev_prepare *w)
943	{	2118	{
944	if (ev_is_active (w))	2119	if (expect_false (ev_is_active (w)))
945	return;	2120	return;
946		2121
947	ev_start ((W)w, ++preparecnt);	2122	ev_start (EV_A_ (W)w, ++preparecnt);
948	array_needsize (prepares, preparemax, preparecnt, );	2123	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
949	prepares [preparecnt - 1] = w;	2124	prepares [preparecnt - 1] = w;
950	}	2125	}
951		2126
952	void	2127	void
953	ev_prepare_stop (struct ev_prepare *w)	2128	ev_prepare_stop (EV_P_ ev_prepare *w)
954	{	2129	{
955	ev_clear_pending ((W)w);	2130	clear_pending (EV_A_ (W)w);
956	if (ev_is_active (w))	2131	if (expect_false (!ev_is_active (w)))
957	return;	2132	return;
958		2133
		2134	{
		2135	int active = ((W)w)->active;
959	prepares [w->active - 1] = prepares [--preparecnt];	2136	prepares [active - 1] = prepares [--preparecnt];
		2137	((W)prepares [active - 1])->active = active;
		2138	}
		2139
960	ev_stop ((W)w);	2140	ev_stop (EV_A_ (W)w);
961	}	2141	}
962		2142
963	void	2143	void
964	ev_check_start (struct ev_check *w)	2144	ev_check_start (EV_P_ ev_check *w)
965	{	2145	{
966	if (ev_is_active (w))	2146	if (expect_false (ev_is_active (w)))
967	return;	2147	return;
968		2148
969	ev_start ((W)w, ++checkcnt);	2149	ev_start (EV_A_ (W)w, ++checkcnt);
970	array_needsize (checks, checkmax, checkcnt, );	2150	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
971	checks [checkcnt - 1] = w;	2151	checks [checkcnt - 1] = w;
972	}	2152	}
973		2153
974	void	2154	void
975	ev_check_stop (struct ev_check *w)	2155	ev_check_stop (EV_P_ ev_check *w)
976	{	2156	{
977	ev_clear_pending ((W)w);	2157	clear_pending (EV_A_ (W)w);
978	if (ev_is_active (w))	2158	if (expect_false (!ev_is_active (w)))
979	return;	2159	return;
980		2160
		2161	{
		2162	int active = ((W)w)->active;
981	checks [w->active - 1] = checks [--checkcnt];	2163	checks [active - 1] = checks [--checkcnt];
		2164	((W)checks [active - 1])->active = active;
		2165	}
		2166
982	ev_stop ((W)w);	2167	ev_stop (EV_A_ (W)w);
983	}	2168	}
984		2169
985	void	2170	#if EV_EMBED_ENABLE
986	ev_child_start (struct ev_child *w)	2171	void noinline
		2172	ev_embed_sweep (EV_P_ ev_embed *w)
987	{	2173	{
		2174	ev_loop (w->loop, EVLOOP_NONBLOCK);
		2175	}
		2176
		2177	static void
		2178	embed_cb (EV_P_ ev_io *io, int revents)
		2179	{
		2180	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		2181
988	if (ev_is_active (w))	2182	if (ev_cb (w))
989	return;	2183	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		2184	else
		2185	ev_embed_sweep (loop, w);
		2186	}
990		2187
		2188	void
		2189	ev_embed_start (EV_P_ ev_embed *w)
		2190	{
		2191	if (expect_false (ev_is_active (w)))
		2192	return;
		2193
		2194	{
		2195	struct ev_loop *loop = w->loop;
		2196	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		2197	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		2198	}
		2199
		2200	ev_set_priority (&w->io, ev_priority (w));
		2201	ev_io_start (EV_A_ &w->io);
		2202
991	ev_start ((W)w, 1);	2203	ev_start (EV_A_ (W)w, 1);
992	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
993	}	2204	}
994		2205
995	void	2206	void
996	ev_child_stop (struct ev_child *w)	2207	ev_embed_stop (EV_P_ ev_embed *w)
997	{	2208	{
998	ev_clear_pending ((W)w);	2209	clear_pending (EV_A_ (W)w);
999	if (ev_is_active (w))	2210	if (expect_false (!ev_is_active (w)))
1000	return;	2211	return;
1001		2212
1002	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	2213	ev_io_stop (EV_A_ &w->io);
		2214
1003	ev_stop ((W)w);	2215	ev_stop (EV_A_ (W)w);
1004	}	2216	}
		2217	#endif
		2218
		2219	#if EV_FORK_ENABLE
		2220	void
		2221	ev_fork_start (EV_P_ ev_fork *w)
		2222	{
		2223	if (expect_false (ev_is_active (w)))
		2224	return;
		2225
		2226	ev_start (EV_A_ (W)w, ++forkcnt);
		2227	array_needsize (ev_fork *, forks, forkmax, forkcnt, EMPTY2);
		2228	forks [forkcnt - 1] = w;
		2229	}
		2230
		2231	void
		2232	ev_fork_stop (EV_P_ ev_fork *w)
		2233	{
		2234	clear_pending (EV_A_ (W)w);
		2235	if (expect_false (!ev_is_active (w)))
		2236	return;
		2237
		2238	{
		2239	int active = ((W)w)->active;
		2240	forks [active - 1] = forks [--forkcnt];
		2241	((W)forks [active - 1])->active = active;
		2242	}
		2243
		2244	ev_stop (EV_A_ (W)w);
		2245	}
		2246	#endif
1005		2247
1006	/*****************************************************************************/	2248	/*****************************************************************************/
1007		2249
1008	struct ev_once	2250	struct ev_once
1009	{	2251	{
1010	struct ev_io io;	2252	ev_io io;
1011	struct ev_timer to;	2253	ev_timer to;
1012	void (*cb)(int revents, void *arg);	2254	void (*cb)(int revents, void *arg);
1013	void *arg;	2255	void *arg;
1014	};	2256	};
1015		2257
1016	static void	2258	static void
1017	once_cb (struct ev_once *once, int revents)	2259	once_cb (EV_P_ struct ev_once *once, int revents)
1018	{	2260	{
1019	void (*cb)(int revents, void *arg) = once->cb;	2261	void (*cb)(int revents, void *arg) = once->cb;
1020	void *arg = once->arg;	2262	void *arg = once->arg;
1021		2263
1022	ev_io_stop (&once->io);	2264	ev_io_stop (EV_A_ &once->io);
1023	ev_timer_stop (&once->to);	2265	ev_timer_stop (EV_A_ &once->to);
1024	free (once);	2266	ev_free (once);
1025		2267
1026	cb (revents, arg);	2268	cb (revents, arg);
1027	}	2269	}
1028		2270
1029	static void	2271	static void
1030	once_cb_io (struct ev_io *w, int revents)	2272	once_cb_io (EV_P_ ev_io *w, int revents)
1031	{	2273	{
1032	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	2274	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1033	}	2275	}
1034		2276
1035	static void	2277	static void
1036	once_cb_to (struct ev_timer *w, int revents)	2278	once_cb_to (EV_P_ ev_timer *w, int revents)
1037	{	2279	{
1038	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	2280	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1039	}	2281	}
1040		2282
1041	void	2283	void
1042	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	2284	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1043	{	2285	{
1044	struct ev_once *once = malloc (sizeof (struct ev_once));	2286	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1045		2287
1046	if (!once)	2288	if (expect_false (!once))
		2289	{
1047	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	2290	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1048	else	2291	return;
1049	{	2292	}
		2293
1050	once->cb = cb;	2294	once->cb = cb;
1051	once->arg = arg;	2295	once->arg = arg;
1052		2296
1053	ev_watcher_init (&once->io, once_cb_io);	2297	ev_init (&once->io, once_cb_io);
1054	if (fd >= 0)	2298	if (fd >= 0)
1055	{	2299	{
1056	ev_io_set (&once->io, fd, events);	2300	ev_io_set (&once->io, fd, events);
1057	ev_io_start (&once->io);	2301	ev_io_start (EV_A_ &once->io);
1058	}	2302	}
1059		2303
1060	ev_watcher_init (&once->to, once_cb_to);	2304	ev_init (&once->to, once_cb_to);
1061	if (timeout >= 0.)	2305	if (timeout >= 0.)
1062	{	2306	{
1063	ev_timer_set (&once->to, timeout, 0.);	2307	ev_timer_set (&once->to, timeout, 0.);
1064	ev_timer_start (&once->to);	2308	ev_timer_start (EV_A_ &once->to);
1065	}
1066	}
1067	}
1068
1069	/*****************************************************************************/
1070
1071	#if 0
1072
1073	struct ev_io wio;
1074
1075	static void
1076	sin_cb (struct ev_io *w, int revents)
1077	{
1078	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1079	}
1080
1081	static void
1082	ocb (struct ev_timer *w, int revents)
1083	{
1084	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1085	ev_timer_stop (w);
1086	ev_timer_start (w);
1087	}
1088
1089	static void
1090	scb (struct ev_signal *w, int revents)
1091	{
1092	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1093	ev_io_stop (&wio);
1094	ev_io_start (&wio);
1095	}
1096
1097	static void
1098	gcb (struct ev_signal *w, int revents)
1099	{
1100	fprintf (stderr, "generic %x\n", revents);
1101
1102	}
1103
1104	int main (void)
1105	{
1106	ev_init (0);
1107
1108	ev_io_init (&wio, sin_cb, 0, EV_READ);
1109	ev_io_start (&wio);
1110
1111	struct ev_timer t[10000];
1112
1113	#if 0
1114	int i;
1115	for (i = 0; i < 10000; ++i)
1116	{	2309	}
1117	struct ev_timer *w = t + i;
1118	ev_watcher_init (w, ocb, i);
1119	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1120	ev_timer_start (w);
1121	if (drand48 () < 0.5)
1122	ev_timer_stop (w);
1123	}
1124	#endif
1125
1126	struct ev_timer t1;
1127	ev_timer_init (&t1, ocb, 5, 10);
1128	ev_timer_start (&t1);
1129
1130	struct ev_signal sig;
1131	ev_signal_init (&sig, scb, SIGQUIT);
1132	ev_signal_start (&sig);
1133
1134	struct ev_check cw;
1135	ev_check_init (&cw, gcb);
1136	ev_check_start (&cw);
1137
1138	struct ev_idle iw;
1139	ev_idle_init (&iw, gcb);
1140	ev_idle_start (&iw);
1141
1142	ev_loop (0);
1143
1144	return 0;
1145	}	2310	}
1146		2311
		2312	#ifdef __cplusplus
		2313	}
1147	#endif	2314	#endif
1148		2315
1149
1150
1151

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