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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 1.97 by root, Sun Nov 11 01:53:07 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	#if EV_USE_CONFIG_H	31
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
		36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
		41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
		44	# define EV_USE_REALTIME 1
		45	# endif
		46	# endif
		47
		48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
		49	# define EV_USE_SELECT 1
		50	# endif
		51
		52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
		53	# define EV_USE_POLL 1
		54	# endif
		55
		56	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
		57	# define EV_USE_EPOLL 1
		58	# endif
		59
		60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
		61	# define EV_USE_KQUEUE 1
		62	# endif
		63
33	#endif	64	#endif
34		65
35	#include <math.h>	66	#include <math.h>
36	#include <stdlib.h>	67	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	68	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	69	#include <stddef.h>
41		70
42	#include <stdio.h>	71	#include <stdio.h>
43		72
44	#include <assert.h>	73	#include <assert.h>
45	#include <errno.h>	74	#include <errno.h>
46	#include <sys/types.h>	75	#include <sys/types.h>
47	#include <sys/wait.h>
48	#include <sys/time.h>
49	#include <time.h>	76	#include <time.h>
		77
		78	#include <signal.h>
		79
		80	#ifndef WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
		83	# include <sys/wait.h>
		84	#endif
		85	/**/
50		86
51	#ifndef EV_USE_MONOTONIC	87	#ifndef EV_USE_MONOTONIC
52	# define EV_USE_MONOTONIC 1	88	# define EV_USE_MONOTONIC 1
53	#endif	89	#endif
		90
		91	#ifndef EV_USE_SELECT
		92	# define EV_USE_SELECT 1
		93	#endif
		94
		95	#ifndef EV_USE_POLL
		96	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
		97	#endif
		98
		99	#ifndef EV_USE_EPOLL
		100	# define EV_USE_EPOLL 0
		101	#endif
		102
		103	#ifndef EV_USE_KQUEUE
		104	# define EV_USE_KQUEUE 0
		105	#endif
		106
		107	#ifndef EV_USE_WIN32
		108	# ifdef WIN32
		109	# define EV_USE_WIN32 0 /* it does not exist, use select */
		110	# undef EV_USE_SELECT
		111	# define EV_USE_SELECT 1
		112	# else
		113	# define EV_USE_WIN32 0
		114	# endif
		115	#endif
		116
		117	#ifndef EV_USE_REALTIME
		118	# define EV_USE_REALTIME 1
		119	#endif
		120
		121	/**/
54		122
55	#ifndef CLOCK_MONOTONIC	123	#ifndef CLOCK_MONOTONIC
56	# undef EV_USE_MONOTONIC	124	# undef EV_USE_MONOTONIC
57	# define EV_USE_MONOTONIC 0	125	# define EV_USE_MONOTONIC 0
58	#endif	126	#endif
59		127
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	128	#ifndef CLOCK_REALTIME
		129	# undef EV_USE_REALTIME
69	# define EV_USE_REALTIME 0	130	# define EV_USE_REALTIME 0
70	#endif	131	#endif
71	#ifndef EV_USE_REALTIME	132
72	# define EV_USE_REALTIME 1 /* posix requirement, but might be slower */	133	/**/
73	#endif
74		134
75	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	135	#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) */	136	#define MAX_BLOCKTIME 59.731 /* 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 */	137	#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 */	138	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */
79		139
		140	#ifdef EV_H
		141	# include EV_H
		142	#else
80	#include "ev.h"	143	# include "ev.h"
		144	#endif
		145
		146	#if __GNUC__ >= 3
		147	# define expect(expr,value) __builtin_expect ((expr),(value))
		148	# define inline inline
		149	#else
		150	# define expect(expr,value) (expr)
		151	# define inline static
		152	#endif
		153
		154	#define expect_false(expr) expect ((expr) != 0, 0)
		155	#define expect_true(expr) expect ((expr) != 0, 1)
		156
		157	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
		158	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
81		159
82	typedef struct ev_watcher *W;	160	typedef struct ev_watcher *W;
83	typedef struct ev_watcher_list *WL;	161	typedef struct ev_watcher_list *WL;
84	typedef struct ev_watcher_time *WT;	162	typedef struct ev_watcher_time *WT;
85		163
86	static ev_tstamp now, diff; /* monotonic clock */	164	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		165
		166	#include "ev_win32.c"
		167
		168	/*****************************************************************************/
		169
		170	static void (*syserr_cb)(const char *msg);
		171
		172	void ev_set_syserr_cb (void (*cb)(const char *msg))
		173	{
		174	syserr_cb = cb;
		175	}
		176
		177	static void
		178	syserr (const char *msg)
		179	{
		180	if (!msg)
		181	msg = "(libev) system error";
		182
		183	if (syserr_cb)
		184	syserr_cb (msg);
		185	else
		186	{
		187	perror (msg);
		188	abort ();
		189	}
		190	}
		191
		192	static void *(*alloc)(void *ptr, long size);
		193
		194	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		195	{
		196	alloc = cb;
		197	}
		198
		199	static void *
		200	ev_realloc (void *ptr, long size)
		201	{
		202	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		203
		204	if (!ptr && size)
		205	{
		206	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		207	abort ();
		208	}
		209
		210	return ptr;
		211	}
		212
		213	#define ev_malloc(size) ev_realloc (0, (size))
		214	#define ev_free(ptr) ev_realloc ((ptr), 0)
		215
		216	/*****************************************************************************/
		217
		218	typedef struct
		219	{
		220	WL head;
		221	unsigned char events;
		222	unsigned char reify;
		223	} ANFD;
		224
		225	typedef struct
		226	{
		227	W w;
		228	int events;
		229	} ANPENDING;
		230
		231	#if EV_MULTIPLICITY
		232
		233	struct ev_loop
		234	{
		235	ev_tstamp ev_rt_now;
		236	#define VAR(name,decl) decl;
		237	#include "ev_vars.h"
		238	#undef VAR
		239	};
		240	#include "ev_wrap.h"
		241
		242	struct ev_loop default_loop_struct;
		243	static struct ev_loop *default_loop;
		244
		245	#else
		246
87	ev_tstamp ev_now;	247	ev_tstamp ev_rt_now;
88	int ev_method;	248	#define VAR(name,decl) static decl;
		249	#include "ev_vars.h"
		250	#undef VAR
89		251
90	static int have_monotonic; /* runtime */	252	static int default_loop;
91		253
92	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	254	#endif
93	static void (*method_modify)(int fd, int oev, int nev);
94	static void (*method_poll)(ev_tstamp timeout);
95		255
96	/*****************************************************************************/	256	/*****************************************************************************/
97		257
98	ev_tstamp	258	ev_tstamp
99	ev_time (void)	259	ev_time (void)
…		…
107	gettimeofday (&tv, 0);	267	gettimeofday (&tv, 0);
108	return tv.tv_sec + tv.tv_usec * 1e-6;	268	return tv.tv_sec + tv.tv_usec * 1e-6;
109	#endif	269	#endif
110	}	270	}
111		271
112	static ev_tstamp	272	inline ev_tstamp
113	get_clock (void)	273	get_clock (void)
114	{	274	{
115	#if EV_USE_MONOTONIC	275	#if EV_USE_MONOTONIC
116	if (have_monotonic)	276	if (expect_true (have_monotonic))
117	{	277	{
118	struct timespec ts;	278	struct timespec ts;
119	clock_gettime (CLOCK_MONOTONIC, &ts);	279	clock_gettime (CLOCK_MONOTONIC, &ts);
120	return ts.tv_sec + ts.tv_nsec * 1e-9;	280	return ts.tv_sec + ts.tv_nsec * 1e-9;
121	}	281	}
122	#endif	282	#endif
123		283
124	return ev_time ();	284	return ev_time ();
125	}	285	}
126		286
		287	#if EV_MULTIPLICITY
		288	ev_tstamp
		289	ev_now (EV_P)
		290	{
		291	return ev_rt_now;
		292	}
		293	#endif
		294
127	#define array_roundsize(base,n) ((n) | 4 & ~3)	295	#define array_roundsize(type,n) ((n) | 4 & ~3)
128		296
129	#define array_needsize(base,cur,cnt,init) \	297	#define array_needsize(type,base,cur,cnt,init) \
130	if ((cnt) > cur) \	298	if (expect_false ((cnt) > cur)) \
131	{ \	299	{ \
132	int newcnt = cur; \	300	int newcnt = cur; \
133	do \	301	do \
134	{ \	302	{ \
135	newcnt = array_roundsize (base, newcnt << 1); \	303	newcnt = array_roundsize (type, newcnt << 1); \
136	} \	304	} \
137	while ((cnt) > newcnt); \	305	while ((cnt) > newcnt); \
138	\	306	\
139	base = realloc (base, sizeof (*base) * (newcnt)); \	307	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
140	init (base + cur, newcnt - cur); \	308	init (base + cur, newcnt - cur); \
141	cur = newcnt; \	309	cur = newcnt; \
142	}	310	}
		311
		312	#define array_slim(type,stem) \
		313	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		314	{ \
		315	stem ## max = array_roundsize (stem ## cnt >> 1); \
		316	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		317	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		318	}
		319
		320	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		321	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		322	#define array_free_microshit(stem) \
		323	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		324
		325	#define array_free(stem, idx) \
		326	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
143		327
144	/*****************************************************************************/	328	/*****************************************************************************/
145
146	typedef struct
147	{
148	struct ev_io *head;
149	unsigned char events;
150	unsigned char reify;
151	} ANFD;
152
153	static ANFD *anfds;
154	static int anfdmax;
155		329
156	static void	330	static void
157	anfds_init (ANFD *base, int count)	331	anfds_init (ANFD *base, int count)
158	{	332	{
159	while (count--)	333	while (count--)
…		…
164		338
165	++base;	339	++base;
166	}	340	}
167	}	341	}
168		342
169	typedef struct	343	void
		344	ev_feed_event (EV_P_ void *w, int revents)
170	{	345	{
171	W w;	346	W w_ = (W)w;
172	int events;
173	} ANPENDING;
174		347
175	static ANPENDING *pendings;
176	static int pendingmax, pendingcnt;
177
178	static void
179	event (W w, int events)
180	{
181	if (w->pending)	348	if (w_->pending)
182	{	349	{
183	pendings [w->pending - 1].events |= events;	350	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
184	return;	351	return;
185	}	352	}
186		353
187	w->pending = ++pendingcnt;	354	w_->pending = ++pendingcnt [ABSPRI (w_)];
188	array_needsize (pendings, pendingmax, pendingcnt, );	355	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
189	pendings [pendingcnt - 1].w = w;	356	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
190	pendings [pendingcnt - 1].events = events;	357	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
191	}	358	}
192		359
193	static void	360	static void
194	queue_events (W *events, int eventcnt, int type)	361	queue_events (EV_P_ W *events, int eventcnt, int type)
195	{	362	{
196	int i;	363	int i;
197		364
198	for (i = 0; i < eventcnt; ++i)	365	for (i = 0; i < eventcnt; ++i)
199	event (events [i], type);	366	ev_feed_event (EV_A_ events [i], type);
200	}	367	}
201		368
202	static void	369	inline void
203	fd_event (int fd, int events)	370	fd_event (EV_P_ int fd, int revents)
204	{	371	{
205	ANFD *anfd = anfds + fd;	372	ANFD *anfd = anfds + fd;
206	struct ev_io *w;	373	struct ev_io *w;
207		374
208	for (w = anfd->head; w; w = w->next)	375	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
209	{	376	{
210	int ev = w->events & events;	377	int ev = w->events & revents;
211		378
212	if (ev)	379	if (ev)
213	event ((W)w, ev);	380	ev_feed_event (EV_A_ (W)w, ev);
214	}	381	}
		382	}
		383
		384	void
		385	ev_feed_fd_event (EV_P_ int fd, int revents)
		386	{
		387	fd_event (EV_A_ fd, revents);
215	}	388	}
216		389
217	/*****************************************************************************/	390	/*****************************************************************************/
218		391
219	static int *fdchanges;
220	static int fdchangemax, fdchangecnt;
221
222	static void	392	static void
223	fd_reify (void)	393	fd_reify (EV_P)
224	{	394	{
225	int i;	395	int i;
226		396
227	for (i = 0; i < fdchangecnt; ++i)	397	for (i = 0; i < fdchangecnt; ++i)
228	{	398	{
…		…
230	ANFD *anfd = anfds + fd;	400	ANFD *anfd = anfds + fd;
231	struct ev_io *w;	401	struct ev_io *w;
232		402
233	int events = 0;	403	int events = 0;
234		404
235	for (w = anfd->head; w; w = w->next)	405	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
236	events |= w->events;	406	events |= w->events;
237		407
238	anfd->reify = 0;	408	anfd->reify = 0;
239		409
240	if (anfd->events != events)
241	{
242	method_modify (fd, anfd->events, events);	410	method_modify (EV_A_ fd, anfd->events, events);
243	anfd->events = events;	411	anfd->events = events;
244	}
245	}	412	}
246		413
247	fdchangecnt = 0;	414	fdchangecnt = 0;
248	}	415	}
249		416
250	static void	417	static void
251	fd_change (int fd)	418	fd_change (EV_P_ int fd)
252	{	419	{
253	if (anfds [fd].reify || fdchangecnt < 0)	420	if (anfds [fd].reify)
254	return;	421	return;
255		422
256	anfds [fd].reify = 1;	423	anfds [fd].reify = 1;
257		424
258	++fdchangecnt;	425	++fdchangecnt;
259	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	426	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
260	fdchanges [fdchangecnt - 1] = fd;	427	fdchanges [fdchangecnt - 1] = fd;
261	}	428	}
262		429
		430	static void
		431	fd_kill (EV_P_ int fd)
		432	{
		433	struct ev_io *w;
		434
		435	while ((w = (struct ev_io *)anfds [fd].head))
		436	{
		437	ev_io_stop (EV_A_ w);
		438	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
		439	}
		440	}
		441
		442	static int
		443	fd_valid (int fd)
		444	{
		445	#ifdef WIN32
		446	return !!win32_get_osfhandle (fd);
		447	#else
		448	return fcntl (fd, F_GETFD) != -1;
		449	#endif
		450	}
		451
263	/* called on EBADF to verify fds */	452	/* called on EBADF to verify fds */
264	static void	453	static void
265	fd_recheck (void)	454	fd_ebadf (EV_P)
266	{	455	{
267	int fd;	456	int fd;
268		457
269	for (fd = 0; fd < anfdmax; ++fd)	458	for (fd = 0; fd < anfdmax; ++fd)
270	if (anfds [fd].events)	459	if (anfds [fd].events)
271	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	460	if (!fd_valid (fd) == -1 && errno == EBADF)
272	while (anfds [fd].head)	461	fd_kill (EV_A_ fd);
		462	}
		463
		464	/* called on ENOMEM in select/poll to kill some fds and retry */
		465	static void
		466	fd_enomem (EV_P)
		467	{
		468	int fd;
		469
		470	for (fd = anfdmax; fd--; )
		471	if (anfds [fd].events)
273	{	472	{
274	ev_io_stop (anfds [fd].head);	473	fd_kill (EV_A_ fd);
275	event ((W)anfds [fd].head, EV_ERROR | EV_READ | EV_WRITE);	474	return;
276	}	475	}
		476	}
		477
		478	/* usually called after fork if method needs to re-arm all fds from scratch */
		479	static void
		480	fd_rearm_all (EV_P)
		481	{
		482	int fd;
		483
		484	/* this should be highly optimised to not do anything but set a flag */
		485	for (fd = 0; fd < anfdmax; ++fd)
		486	if (anfds [fd].events)
		487	{
		488	anfds [fd].events = 0;
		489	fd_change (EV_A_ fd);
		490	}
277	}	491	}
278		492
279	/*****************************************************************************/	493	/*****************************************************************************/
280		494
281	static struct ev_timer **timers;
282	static int timermax, timercnt;
283
284	static struct ev_periodic **periodics;
285	static int periodicmax, periodiccnt;
286
287	static void	495	static void
288	upheap (WT *timers, int k)	496	upheap (WT *heap, int k)
289	{	497	{
290	WT w = timers [k];	498	WT w = heap [k];
291		499
292	while (k && timers [k >> 1]->at > w->at)	500	while (k && heap [k >> 1]->at > w->at)
293	{	501	{
294	timers [k] = timers [k >> 1];	502	heap [k] = heap [k >> 1];
295	timers [k]->active = k + 1;	503	((W)heap [k])->active = k + 1;
296	k >>= 1;	504	k >>= 1;
297	}	505	}
298		506
299	timers [k] = w;	507	heap [k] = w;
300	timers [k]->active = k + 1;	508	((W)heap [k])->active = k + 1;
301		509
302	}	510	}
303		511
304	static void	512	static void
305	downheap (WT *timers, int N, int k)	513	downheap (WT *heap, int N, int k)
306	{	514	{
307	WT w = timers [k];	515	WT w = heap [k];
308		516
309	while (k < (N >> 1))	517	while (k < (N >> 1))
310	{	518	{
311	int j = k << 1;	519	int j = k << 1;
312		520
313	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	521	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
314	++j;	522	++j;
315		523
316	if (w->at <= timers [j]->at)	524	if (w->at <= heap [j]->at)
317	break;	525	break;
318		526
319	timers [k] = timers [j];	527	heap [k] = heap [j];
320	timers [k]->active = k + 1;	528	((W)heap [k])->active = k + 1;
321	k = j;	529	k = j;
322	}	530	}
323		531
324	timers [k] = w;	532	heap [k] = w;
325	timers [k]->active = k + 1;	533	((W)heap [k])->active = k + 1;
		534	}
		535
		536	inline void
		537	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		538	{
		539	ev_tstamp old_at = heap [k]->at;
		540	heap [k]->at = at;
		541
		542	if (old_at < at)
		543	downheap (heap, N, k);
		544	else
		545	upheap (heap, k);
326	}	546	}
327		547
328	/*****************************************************************************/	548	/*****************************************************************************/
329		549
330	typedef struct	550	typedef struct
331	{	551	{
332	struct ev_signal *head;	552	WL head;
333	sig_atomic_t volatile gotsig;	553	sig_atomic_t volatile gotsig;
334	} ANSIG;	554	} ANSIG;
335		555
336	static ANSIG *signals;	556	static ANSIG *signals;
337	static int signalmax;	557	static int signalmax;
…		…
353	}	573	}
354		574
355	static void	575	static void
356	sighandler (int signum)	576	sighandler (int signum)
357	{	577	{
		578	#if WIN32
		579	signal (signum, sighandler);
		580	#endif
		581
358	signals [signum - 1].gotsig = 1;	582	signals [signum - 1].gotsig = 1;
359		583
360	if (!gotsig)	584	if (!gotsig)
361	{	585	{
		586	int old_errno = errno;
362	gotsig = 1;	587	gotsig = 1;
		588	#ifdef WIN32
		589	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		590	#else
363	write (sigpipe [1], &signum, 1);	591	write (sigpipe [1], &signum, 1);
		592	#endif
		593	errno = old_errno;
364	}	594	}
365	}	595	}
366		596
		597	void
		598	ev_feed_signal_event (EV_P_ int signum)
		599	{
		600	WL w;
		601
		602	#if EV_MULTIPLICITY
		603	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		604	#endif
		605
		606	--signum;
		607
		608	if (signum < 0 || signum >= signalmax)
		609	return;
		610
		611	signals [signum].gotsig = 0;
		612
		613	for (w = signals [signum].head; w; w = w->next)
		614	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		615	}
		616
367	static void	617	static void
368	sigcb (struct ev_io *iow, int revents)	618	sigcb (EV_P_ struct ev_io *iow, int revents)
369	{	619	{
370	struct ev_signal *w;
371	int signum;	620	int signum;
372		621
		622	#ifdef WIN32
		623	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		624	#else
373	read (sigpipe [0], &revents, 1);	625	read (sigpipe [0], &revents, 1);
		626	#endif
374	gotsig = 0;	627	gotsig = 0;
375		628
376	for (signum = signalmax; signum--; )	629	for (signum = signalmax; signum--; )
377	if (signals [signum].gotsig)	630	if (signals [signum].gotsig)
378	{	631	ev_feed_signal_event (EV_A_ signum + 1);
379	signals [signum].gotsig = 0;
380
381	for (w = signals [signum].head; w; w = w->next)
382	event ((W)w, EV_SIGNAL);
383	}
384	}	632	}
385		633
386	static void	634	static void
387	siginit (void)	635	siginit (EV_P)
388	{	636	{
		637	#ifndef WIN32
389	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	638	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
390	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	639	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
391		640
392	/* rather than sort out wether we really need nb, set it */	641	/* rather than sort out wether we really need nb, set it */
393	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	642	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
394	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	643	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		644	#endif
395		645
396	ev_io_set (&sigev, sigpipe [0], EV_READ);	646	ev_io_set (&sigev, sigpipe [0], EV_READ);
397	ev_io_start (&sigev);	647	ev_io_start (EV_A_ &sigev);
		648	ev_unref (EV_A); /* child watcher should not keep loop alive */
398	}	649	}
399		650
400	/*****************************************************************************/	651	/*****************************************************************************/
401		652
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];	653	static struct ev_child *childs [PID_HASHSIZE];
		654
		655	#ifndef WIN32
		656
414	static struct ev_signal childev;	657	static struct ev_signal childev;
415		658
416	#ifndef WCONTINUED	659	#ifndef WCONTINUED
417	# define WCONTINUED 0	660	# define WCONTINUED 0
418	#endif	661	#endif
419		662
420	static void	663	static void
421	childcb (struct ev_signal *sw, int revents)	664	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
422	{	665	{
423	struct ev_child *w;	666	struct ev_child *w;
		667
		668	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		669	if (w->pid == pid || !w->pid)
		670	{
		671	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		672	w->rpid = pid;
		673	w->rstatus = status;
		674	ev_feed_event (EV_A_ (W)w, EV_CHILD);
		675	}
		676	}
		677
		678	static void
		679	childcb (EV_P_ struct ev_signal *sw, int revents)
		680	{
424	int pid, status;	681	int pid, status;
425		682
426	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	683	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
427	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	684	{
428	if (w->pid == pid || !w->pid)	685	/* make sure we are called again until all childs have been reaped */
429	{	686	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
430	w->status = status;	687
431	event ((W)w, EV_CHILD);	688	child_reap (EV_A_ sw, pid, pid, status);
432	}	689	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		690	}
433	}	691	}
		692
		693	#endif
434		694
435	/*****************************************************************************/	695	/*****************************************************************************/
436		696
		697	#if EV_USE_KQUEUE
		698	# include "ev_kqueue.c"
		699	#endif
437	#if EV_USE_EPOLL	700	#if EV_USE_EPOLL
438	# include "ev_epoll.c"	701	# include "ev_epoll.c"
439	#endif	702	#endif
		703	#if EV_USE_POLL
		704	# include "ev_poll.c"
		705	#endif
440	#if EV_USE_SELECT	706	#if EV_USE_SELECT
441	# include "ev_select.c"	707	# include "ev_select.c"
442	#endif	708	#endif
443		709
444	int	710	int
…		…
451	ev_version_minor (void)	717	ev_version_minor (void)
452	{	718	{
453	return EV_VERSION_MINOR;	719	return EV_VERSION_MINOR;
454	}	720	}
455		721
456	int ev_init (int flags)	722	/* return true if we are running with elevated privileges and should ignore env variables */
		723	static int
		724	enable_secure (void)
457	{	725	{
		726	#ifdef WIN32
		727	return 0;
		728	#else
		729	return getuid () != geteuid ()
		730	|| getgid () != getegid ();
		731	#endif
		732	}
		733
		734	int
		735	ev_method (EV_P)
		736	{
		737	return method;
		738	}
		739
		740	static void
		741	loop_init (EV_P_ int methods)
		742	{
458	if (!ev_method)	743	if (!method)
459	{	744	{
460	#if EV_USE_MONOTONIC	745	#if EV_USE_MONOTONIC
461	{	746	{
462	struct timespec ts;	747	struct timespec ts;
463	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	748	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
464	have_monotonic = 1;	749	have_monotonic = 1;
465	}	750	}
466	#endif	751	#endif
467		752
468	ev_now = ev_time ();	753	ev_rt_now = ev_time ();
469	now = get_clock ();	754	mn_now = get_clock ();
		755	now_floor = mn_now;
470	diff = ev_now - now;	756	rtmn_diff = ev_rt_now - mn_now;
471		757
472	if (pipe (sigpipe))	758	if (methods == EVMETHOD_AUTO)
473	return 0;	759	if (!enable_secure () && getenv ("LIBEV_METHODS"))
474		760	methods = atoi (getenv ("LIBEV_METHODS"));
		761	else
475	ev_method = EVMETHOD_NONE;	762	methods = EVMETHOD_ANY;
		763
		764	method = 0;
		765	#if EV_USE_WIN32
		766	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		767	#endif
		768	#if EV_USE_KQUEUE
		769	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		770	#endif
476	#if EV_USE_EPOLL	771	#if EV_USE_EPOLL
477	if (ev_method == EVMETHOD_NONE) epoll_init (flags);	772	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
		773	#endif
		774	#if EV_USE_POLL
		775	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
478	#endif	776	#endif
479	#if EV_USE_SELECT	777	#if EV_USE_SELECT
480	if (ev_method == EVMETHOD_NONE) select_init (flags);	778	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
481	#endif	779	#endif
482		780
		781	ev_init (&sigev, sigcb);
		782	ev_set_priority (&sigev, EV_MAXPRI);
		783	}
		784	}
		785
		786	void
		787	loop_destroy (EV_P)
		788	{
		789	int i;
		790
		791	#if EV_USE_WIN32
		792	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		793	#endif
		794	#if EV_USE_KQUEUE
		795	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		796	#endif
		797	#if EV_USE_EPOLL
		798	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		799	#endif
		800	#if EV_USE_POLL
		801	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		802	#endif
		803	#if EV_USE_SELECT
		804	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		805	#endif
		806
		807	for (i = NUMPRI; i--; )
		808	array_free (pending, [i]);
		809
		810	/* have to use the microsoft-never-gets-it-right macro */
		811	array_free_microshit (fdchange);
		812	array_free_microshit (timer);
		813	#if EV_PERIODICS
		814	array_free_microshit (periodic);
		815	#endif
		816	array_free_microshit (idle);
		817	array_free_microshit (prepare);
		818	array_free_microshit (check);
		819
		820	method = 0;
		821	}
		822
		823	static void
		824	loop_fork (EV_P)
		825	{
		826	#if EV_USE_EPOLL
		827	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		828	#endif
		829	#if EV_USE_KQUEUE
		830	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		831	#endif
		832
		833	if (ev_is_active (&sigev))
		834	{
		835	/* default loop */
		836
		837	ev_ref (EV_A);
		838	ev_io_stop (EV_A_ &sigev);
		839	close (sigpipe [0]);
		840	close (sigpipe [1]);
		841
		842	while (pipe (sigpipe))
		843	syserr ("(libev) error creating pipe");
		844
		845	siginit (EV_A);
		846	}
		847
		848	postfork = 0;
		849	}
		850
		851	#if EV_MULTIPLICITY
		852	struct ev_loop *
		853	ev_loop_new (int methods)
		854	{
		855	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		856
		857	memset (loop, 0, sizeof (struct ev_loop));
		858
		859	loop_init (EV_A_ methods);
		860
		861	if (ev_method (EV_A))
		862	return loop;
		863
		864	return 0;
		865	}
		866
		867	void
		868	ev_loop_destroy (EV_P)
		869	{
		870	loop_destroy (EV_A);
		871	ev_free (loop);
		872	}
		873
		874	void
		875	ev_loop_fork (EV_P)
		876	{
		877	postfork = 1;
		878	}
		879
		880	#endif
		881
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *
		884	#else
		885	int
		886	#endif
		887	ev_default_loop (int methods)
		888	{
		889	if (sigpipe [0] == sigpipe [1])
		890	if (pipe (sigpipe))
		891	return 0;
		892
		893	if (!default_loop)
		894	{
		895	#if EV_MULTIPLICITY
		896	struct ev_loop *loop = default_loop = &default_loop_struct;
		897	#else
		898	default_loop = 1;
		899	#endif
		900
		901	loop_init (EV_A_ methods);
		902
483	if (ev_method)	903	if (ev_method (EV_A))
484	{	904	{
485	ev_watcher_init (&sigev, sigcb);
486	siginit ();	905	siginit (EV_A);
487		906
		907	#ifndef WIN32
488	ev_signal_init (&childev, childcb, SIGCHLD);	908	ev_signal_init (&childev, childcb, SIGCHLD);
		909	ev_set_priority (&childev, EV_MAXPRI);
489	ev_signal_start (&childev);	910	ev_signal_start (EV_A_ &childev);
		911	ev_unref (EV_A); /* child watcher should not keep loop alive */
		912	#endif
490	}	913	}
		914	else
		915	default_loop = 0;
491	}	916	}
492		917
493	return ev_method;	918	return default_loop;
		919	}
		920
		921	void
		922	ev_default_destroy (void)
		923	{
		924	#if EV_MULTIPLICITY
		925	struct ev_loop *loop = default_loop;
		926	#endif
		927
		928	#ifndef WIN32
		929	ev_ref (EV_A); /* child watcher */
		930	ev_signal_stop (EV_A_ &childev);
		931	#endif
		932
		933	ev_ref (EV_A); /* signal watcher */
		934	ev_io_stop (EV_A_ &sigev);
		935
		936	close (sigpipe [0]); sigpipe [0] = 0;
		937	close (sigpipe [1]); sigpipe [1] = 0;
		938
		939	loop_destroy (EV_A);
		940	}
		941
		942	void
		943	ev_default_fork (void)
		944	{
		945	#if EV_MULTIPLICITY
		946	struct ev_loop *loop = default_loop;
		947	#endif
		948
		949	if (method)
		950	postfork = 1;
494	}	951	}
495		952
496	/*****************************************************************************/	953	/*****************************************************************************/
497		954
498	void
499	ev_fork_prepare (void)
500	{
501	/* nop */
502	}
503
504	void
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	955	static int
		956	any_pending (EV_P)
		957	{
		958	int pri;
		959
		960	for (pri = NUMPRI; pri--; )
		961	if (pendingcnt [pri])
		962	return 1;
		963
		964	return 0;
		965	}
		966
		967	static void
528	call_pending (void)	968	call_pending (EV_P)
529	{	969	{
		970	int pri;
		971
		972	for (pri = NUMPRI; pri--; )
530	while (pendingcnt)	973	while (pendingcnt [pri])
531	{	974	{
532	ANPENDING *p = pendings + --pendingcnt;	975	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
533		976
534	if (p->w)	977	if (p->w)
535	{	978	{
536	p->w->pending = 0;	979	p->w->pending = 0;
537	p->w->cb (p->w, p->events);	980	EV_CB_INVOKE (p->w, p->events);
538	}	981	}
539	}	982	}
540	}	983	}
541		984
542	static void	985	static void
543	timers_reify (void)	986	timers_reify (EV_P)
544	{	987	{
545	while (timercnt && timers [0]->at <= now)	988	while (timercnt && ((WT)timers [0])->at <= mn_now)
546	{	989	{
547	struct ev_timer *w = timers [0];	990	struct ev_timer *w = timers [0];
		991
		992	assert (("inactive timer on timer heap detected", ev_is_active (w)));
548		993
549	/* first reschedule or stop timer */	994	/* first reschedule or stop timer */
550	if (w->repeat)	995	if (w->repeat)
551	{	996	{
552	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	997	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		998
553	w->at = now + w->repeat;	999	((WT)w)->at += w->repeat;
		1000	if (((WT)w)->at < mn_now)
		1001	((WT)w)->at = mn_now;
		1002
554	downheap ((WT *)timers, timercnt, 0);	1003	downheap ((WT *)timers, timercnt, 0);
555	}	1004	}
556	else	1005	else
557	ev_timer_stop (w); /* nonrepeating: stop timer */	1006	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
558		1007
559	event ((W)w, EV_TIMEOUT);	1008	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
560	}	1009	}
561	}	1010	}
562		1011
		1012	#if EV_PERIODICS
563	static void	1013	static void
564	periodics_reify (void)	1014	periodics_reify (EV_P)
565	{	1015	{
566	while (periodiccnt && periodics [0]->at <= ev_now)	1016	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
567	{	1017	{
568	struct ev_periodic *w = periodics [0];	1018	struct ev_periodic *w = periodics [0];
569		1019
		1020	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1021
570	/* first reschedule or stop timer */	1022	/* first reschedule or stop timer */
571	if (w->interval)	1023	if (w->reschedule_cb)
572	{	1024	{
		1025	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1026
		1027	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1028	downheap ((WT *)periodics, periodiccnt, 0);
		1029	}
		1030	else if (w->interval)
		1031	{
573	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	1032	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
574	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	1033	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);	1034	downheap ((WT *)periodics, periodiccnt, 0);
576	}	1035	}
577	else	1036	else
578	ev_periodic_stop (w); /* nonrepeating: stop timer */	1037	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
579		1038
580	event ((W)w, EV_PERIODIC);	1039	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
581	}	1040	}
582	}	1041	}
583		1042
584	static void	1043	static void
585	periodics_reschedule (ev_tstamp diff)	1044	periodics_reschedule (EV_P)
586	{	1045	{
587	int i;	1046	int i;
588		1047
589	/* adjust periodics after time jump */	1048	/* adjust periodics after time jump */
590	for (i = 0; i < periodiccnt; ++i)	1049	for (i = 0; i < periodiccnt; ++i)
591	{	1050	{
592	struct ev_periodic *w = periodics [i];	1051	struct ev_periodic *w = periodics [i];
593		1052
		1053	if (w->reschedule_cb)
		1054	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
594	if (w->interval)	1055	else if (w->interval)
		1056	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1057	}
		1058
		1059	/* now rebuild the heap */
		1060	for (i = periodiccnt >> 1; i--; )
		1061	downheap ((WT *)periodics, periodiccnt, i);
		1062	}
		1063	#endif
		1064
		1065	inline int
		1066	time_update_monotonic (EV_P)
		1067	{
		1068	mn_now = get_clock ();
		1069
		1070	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
		1071	{
		1072	ev_rt_now = rtmn_diff + mn_now;
		1073	return 0;
		1074	}
		1075	else
		1076	{
		1077	now_floor = mn_now;
		1078	ev_rt_now = ev_time ();
		1079	return 1;
		1080	}
		1081	}
		1082
		1083	static void
		1084	time_update (EV_P)
		1085	{
		1086	int i;
		1087
		1088	#if EV_USE_MONOTONIC
		1089	if (expect_true (have_monotonic))
		1090	{
		1091	if (time_update_monotonic (EV_A))
595	{	1092	{
596	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	1093	ev_tstamp odiff = rtmn_diff;
597		1094
598	if (fabs (diff) >= 1e-4)	1095	for (i = 4; --i; ) /* loop a few times, before making important decisions */
599	{	1096	{
600	ev_periodic_stop (w);	1097	rtmn_diff = ev_rt_now - mn_now;
601	ev_periodic_start (w);
602		1098
603	i = 0; /* restart loop, inefficient, but time jumps should be rare */	1099	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
		1100	return; /* all is well */
		1101
		1102	ev_rt_now = ev_time ();
		1103	mn_now = get_clock ();
		1104	now_floor = mn_now;
604	}	1105	}
		1106
		1107	# if EV_PERIODICS
		1108	periodics_reschedule (EV_A);
		1109	# endif
		1110	/* no timer adjustment, as the monotonic clock doesn't jump */
		1111	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
605	}	1112	}
606	}	1113	}
607	}	1114	else
608		1115	#endif
609	static void	1116	{
610	time_update (void)
611	{
612	int i;
613
614	ev_now = ev_time ();	1117	ev_rt_now = ev_time ();
615		1118
616	if (have_monotonic)	1119	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
617	{
618	ev_tstamp odiff = diff;
619
620	for (i = 4; --i; ) /* loop a few times, before making important decisions */
621	{	1120	{
622	now = get_clock ();	1121	#if EV_PERIODICS
623	diff = ev_now - now;
624
625	if (fabs (odiff - diff) < MIN_TIMEJUMP)
626	return; /* all is well */
627
628	ev_now = ev_time ();
629	}
630
631	periodics_reschedule (diff - odiff);
632	/* no timer adjustment, as the monotonic clock doesn't jump */
633	}
634	else
635	{
636	if (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP)
637	{
638	periodics_reschedule (ev_now - now);	1122	periodics_reschedule (EV_A);
		1123	#endif
639		1124
640	/* adjust timers. this is easy, as the offset is the same for all */	1125	/* adjust timers. this is easy, as the offset is the same for all */
641	for (i = 0; i < timercnt; ++i)	1126	for (i = 0; i < timercnt; ++i)
642	timers [i]->at += diff;	1127	((WT)timers [i])->at += ev_rt_now - mn_now;
643	}	1128	}
644		1129
645	now = ev_now;	1130	mn_now = ev_rt_now;
646	}	1131	}
647	}	1132	}
648		1133
649	int ev_loop_done;	1134	void
		1135	ev_ref (EV_P)
		1136	{
		1137	++activecnt;
		1138	}
650		1139
		1140	void
		1141	ev_unref (EV_P)
		1142	{
		1143	--activecnt;
		1144	}
		1145
		1146	static int loop_done;
		1147
		1148	void
651	void ev_loop (int flags)	1149	ev_loop (EV_P_ int flags)
652	{	1150	{
653	double block;	1151	double block;
654	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1152	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
655		1153
656	do	1154	do
657	{	1155	{
658	/* queue check watchers (and execute them) */	1156	/* queue check watchers (and execute them) */
659	if (preparecnt)	1157	if (expect_false (preparecnt))
660	{	1158	{
661	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	1159	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
662	call_pending ();	1160	call_pending (EV_A);
663	}	1161	}
664		1162
		1163	/* we might have forked, so reify kernel state if necessary */
		1164	if (expect_false (postfork))
		1165	loop_fork (EV_A);
		1166
665	/* update fd-related kernel structures */	1167	/* update fd-related kernel structures */
666	fd_reify ();	1168	fd_reify (EV_A);
667		1169
668	/* calculate blocking time */	1170	/* calculate blocking time */
669		1171
670	/* we only need this for !monotonic clockor timers, but as we basically	1172	/* we only need this for !monotonic clock or timers, but as we basically
671	always have timers, we just calculate it always */	1173	always have timers, we just calculate it always */
		1174	#if EV_USE_MONOTONIC
		1175	if (expect_true (have_monotonic))
		1176	time_update_monotonic (EV_A);
		1177	else
		1178	#endif
		1179	{
672	ev_now = ev_time ();	1180	ev_rt_now = ev_time ();
		1181	mn_now = ev_rt_now;
		1182	}
673		1183
674	if (flags & EVLOOP_NONBLOCK || idlecnt)	1184	if (flags & EVLOOP_NONBLOCK || idlecnt)
675	block = 0.;	1185	block = 0.;
676	else	1186	else
677	{	1187	{
678	block = MAX_BLOCKTIME;	1188	block = MAX_BLOCKTIME;
679		1189
680	if (timercnt)	1190	if (timercnt)
681	{	1191	{
682	ev_tstamp to = timers [0]->at - (have_monotonic ? get_clock () : ev_now) + method_fudge;	1192	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
683	if (block > to) block = to;	1193	if (block > to) block = to;
684	}	1194	}
685		1195
		1196	#if EV_PERIODICS
686	if (periodiccnt)	1197	if (periodiccnt)
687	{	1198	{
688	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1199	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
689	if (block > to) block = to;	1200	if (block > to) block = to;
690	}	1201	}
		1202	#endif
691		1203
692	if (block < 0.) block = 0.;	1204	if (block < 0.) block = 0.;
693	}	1205	}
694		1206
695	method_poll (block);	1207	method_poll (EV_A_ block);
696		1208
697	/* update ev_now, do magic */	1209	/* update ev_rt_now, do magic */
698	time_update ();	1210	time_update (EV_A);
699		1211
700	/* queue pending timers and reschedule them */	1212	/* queue pending timers and reschedule them */
701	timers_reify (); /* relative timers called last */	1213	timers_reify (EV_A); /* relative timers called last */
		1214	#if EV_PERIODICS
702	periodics_reify (); /* absolute timers called first */	1215	periodics_reify (EV_A); /* absolute timers called first */
		1216	#endif
703		1217
704	/* queue idle watchers unless io or timers are pending */	1218	/* queue idle watchers unless io or timers are pending */
705	if (!pendingcnt)	1219	if (idlecnt && !any_pending (EV_A))
706	queue_events ((W *)idles, idlecnt, EV_IDLE);	1220	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
707		1221
708	/* queue check watchers, to be executed first */	1222	/* queue check watchers, to be executed first */
709	if (checkcnt)	1223	if (checkcnt)
710	queue_events ((W *)checks, checkcnt, EV_CHECK);	1224	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
711		1225
712	call_pending ();	1226	call_pending (EV_A);
713	}	1227	}
714	while (!ev_loop_done);	1228	while (activecnt && !loop_done);
715		1229
716	if (ev_loop_done != 2)	1230	if (loop_done != 2)
717	ev_loop_done = 0;	1231	loop_done = 0;
		1232	}
		1233
		1234	void
		1235	ev_unloop (EV_P_ int how)
		1236	{
		1237	loop_done = how;
718	}	1238	}
719		1239
720	/*****************************************************************************/	1240	/*****************************************************************************/
721		1241
722	static void	1242	inline void
723	wlist_add (WL *head, WL elem)	1243	wlist_add (WL *head, WL elem)
724	{	1244	{
725	elem->next = *head;	1245	elem->next = *head;
726	*head = elem;	1246	*head = elem;
727	}	1247	}
728		1248
729	static void	1249	inline void
730	wlist_del (WL *head, WL elem)	1250	wlist_del (WL *head, WL elem)
731	{	1251	{
732	while (*head)	1252	while (*head)
733	{	1253	{
734	if (*head == elem)	1254	if (*head == elem)
…		…
739		1259
740	head = &(*head)->next;	1260	head = &(*head)->next;
741	}	1261	}
742	}	1262	}
743		1263
744	static void	1264	inline void
745	ev_clear_pending (W w)	1265	ev_clear_pending (EV_P_ W w)
746	{	1266	{
747	if (w->pending)	1267	if (w->pending)
748	{	1268	{
749	pendings [w->pending - 1].w = 0;	1269	pendings [ABSPRI (w)][w->pending - 1].w = 0;
750	w->pending = 0;	1270	w->pending = 0;
751	}	1271	}
752	}	1272	}
753		1273
754	static void	1274	inline void
755	ev_start (W w, int active)	1275	ev_start (EV_P_ W w, int active)
756	{	1276	{
		1277	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1278	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1279
757	w->active = active;	1280	w->active = active;
		1281	ev_ref (EV_A);
758	}	1282	}
759		1283
760	static void	1284	inline void
761	ev_stop (W w)	1285	ev_stop (EV_P_ W w)
762	{	1286	{
		1287	ev_unref (EV_A);
763	w->active = 0;	1288	w->active = 0;
764	}	1289	}
765		1290
766	/*****************************************************************************/	1291	/*****************************************************************************/
767		1292
768	void	1293	void
769	ev_io_start (struct ev_io *w)	1294	ev_io_start (EV_P_ struct ev_io *w)
770	{	1295	{
771	int fd = w->fd;	1296	int fd = w->fd;
772		1297
773	if (ev_is_active (w))	1298	if (ev_is_active (w))
774	return;	1299	return;
775		1300
776	assert (("ev_io_start called with negative fd", fd >= 0));	1301	assert (("ev_io_start called with negative fd", fd >= 0));
777		1302
778	ev_start ((W)w, 1);	1303	ev_start (EV_A_ (W)w, 1);
779	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1304	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
780	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1305	wlist_add ((WL *)&anfds[fd].head, (WL)w);
781		1306
782	fd_change (fd);	1307	fd_change (EV_A_ fd);
783	}	1308	}
784		1309
785	void	1310	void
786	ev_io_stop (struct ev_io *w)	1311	ev_io_stop (EV_P_ struct ev_io *w)
787	{	1312	{
788	ev_clear_pending ((W)w);	1313	ev_clear_pending (EV_A_ (W)w);
789	if (!ev_is_active (w))	1314	if (!ev_is_active (w))
790	return;	1315	return;
791		1316
		1317	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1318
792	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1319	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
793	ev_stop ((W)w);	1320	ev_stop (EV_A_ (W)w);
794		1321
795	fd_change (w->fd);	1322	fd_change (EV_A_ w->fd);
796	}	1323	}
797		1324
798	void	1325	void
799	ev_timer_start (struct ev_timer *w)	1326	ev_timer_start (EV_P_ struct ev_timer *w)
800	{	1327	{
801	if (ev_is_active (w))	1328	if (ev_is_active (w))
802	return;	1329	return;
803		1330
804	w->at += now;	1331	((WT)w)->at += mn_now;
805		1332
806	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1333	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
807		1334
808	ev_start ((W)w, ++timercnt);	1335	ev_start (EV_A_ (W)w, ++timercnt);
809	array_needsize (timers, timermax, timercnt, );	1336	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
810	timers [timercnt - 1] = w;	1337	timers [timercnt - 1] = w;
811	upheap ((WT *)timers, timercnt - 1);	1338	upheap ((WT *)timers, timercnt - 1);
812	}
813		1339
		1340	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1341	}
		1342
814	void	1343	void
815	ev_timer_stop (struct ev_timer *w)	1344	ev_timer_stop (EV_P_ struct ev_timer *w)
816	{	1345	{
817	ev_clear_pending ((W)w);	1346	ev_clear_pending (EV_A_ (W)w);
818	if (!ev_is_active (w))	1347	if (!ev_is_active (w))
819	return;	1348	return;
820		1349
		1350	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1351
821	if (w->active < timercnt--)	1352	if (((W)w)->active < timercnt--)
822	{	1353	{
823	timers [w->active - 1] = timers [timercnt];	1354	timers [((W)w)->active - 1] = timers [timercnt];
824	downheap ((WT *)timers, timercnt, w->active - 1);	1355	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
825	}	1356	}
826		1357
827	w->at = w->repeat;	1358	((WT)w)->at -= mn_now;
828		1359
829	ev_stop ((W)w);	1360	ev_stop (EV_A_ (W)w);
830	}	1361	}
831		1362
832	void	1363	void
833	ev_timer_again (struct ev_timer *w)	1364	ev_timer_again (EV_P_ struct ev_timer *w)
834	{	1365	{
835	if (ev_is_active (w))	1366	if (ev_is_active (w))
836	{	1367	{
837	if (w->repeat)	1368	if (w->repeat)
838	{
839	w->at = now + w->repeat;
840	downheap ((WT *)timers, timercnt, w->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
841	}
842	else	1370	else
843	ev_timer_stop (w);	1371	ev_timer_stop (EV_A_ w);
844	}	1372	}
845	else if (w->repeat)	1373	else if (w->repeat)
846	ev_timer_start (w);	1374	ev_timer_start (EV_A_ w);
847	}	1375	}
848		1376
		1377	#if EV_PERIODICS
849	void	1378	void
850	ev_periodic_start (struct ev_periodic *w)	1379	ev_periodic_start (EV_P_ struct ev_periodic *w)
851	{	1380	{
852	if (ev_is_active (w))	1381	if (ev_is_active (w))
853	return;	1382	return;
854		1383
		1384	if (w->reschedule_cb)
		1385	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1386	else if (w->interval)
		1387	{
855	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1388	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 */	1389	/* 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;	1390	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1391	}
860		1392
861	ev_start ((W)w, ++periodiccnt);	1393	ev_start (EV_A_ (W)w, ++periodiccnt);
862	array_needsize (periodics, periodicmax, periodiccnt, );	1394	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
863	periodics [periodiccnt - 1] = w;	1395	periodics [periodiccnt - 1] = w;
864	upheap ((WT *)periodics, periodiccnt - 1);	1396	upheap ((WT *)periodics, periodiccnt - 1);
865	}
866		1397
		1398	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1399	}
		1400
867	void	1401	void
868	ev_periodic_stop (struct ev_periodic *w)	1402	ev_periodic_stop (EV_P_ struct ev_periodic *w)
869	{	1403	{
870	ev_clear_pending ((W)w);	1404	ev_clear_pending (EV_A_ (W)w);
871	if (!ev_is_active (w))	1405	if (!ev_is_active (w))
872	return;	1406	return;
873		1407
		1408	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1409
874	if (w->active < periodiccnt--)	1410	if (((W)w)->active < periodiccnt--)
875	{	1411	{
876	periodics [w->active - 1] = periodics [periodiccnt];	1412	periodics [((W)w)->active - 1] = periodics [periodiccnt];
877	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1413	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
878	}	1414	}
879		1415
880	ev_stop ((W)w);	1416	ev_stop (EV_A_ (W)w);
881	}	1417	}
882		1418
883	void	1419	void
		1420	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1421	{
		1422	/* TODO: use adjustheap and recalculation */
		1423	ev_periodic_stop (EV_A_ w);
		1424	ev_periodic_start (EV_A_ w);
		1425	}
		1426	#endif
		1427
		1428	void
884	ev_signal_start (struct ev_signal *w)	1429	ev_idle_start (EV_P_ struct ev_idle *w)
885	{	1430	{
886	if (ev_is_active (w))	1431	if (ev_is_active (w))
887	return;	1432	return;
888		1433
		1434	ev_start (EV_A_ (W)w, ++idlecnt);
		1435	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1436	idles [idlecnt - 1] = w;
		1437	}
		1438
		1439	void
		1440	ev_idle_stop (EV_P_ struct ev_idle *w)
		1441	{
		1442	ev_clear_pending (EV_A_ (W)w);
		1443	if (ev_is_active (w))
		1444	return;
		1445
		1446	idles [((W)w)->active - 1] = idles [--idlecnt];
		1447	ev_stop (EV_A_ (W)w);
		1448	}
		1449
		1450	void
		1451	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1452	{
		1453	if (ev_is_active (w))
		1454	return;
		1455
		1456	ev_start (EV_A_ (W)w, ++preparecnt);
		1457	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1458	prepares [preparecnt - 1] = w;
		1459	}
		1460
		1461	void
		1462	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1463	{
		1464	ev_clear_pending (EV_A_ (W)w);
		1465	if (ev_is_active (w))
		1466	return;
		1467
		1468	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1469	ev_stop (EV_A_ (W)w);
		1470	}
		1471
		1472	void
		1473	ev_check_start (EV_P_ struct ev_check *w)
		1474	{
		1475	if (ev_is_active (w))
		1476	return;
		1477
		1478	ev_start (EV_A_ (W)w, ++checkcnt);
		1479	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1480	checks [checkcnt - 1] = w;
		1481	}
		1482
		1483	void
		1484	ev_check_stop (EV_P_ struct ev_check *w)
		1485	{
		1486	ev_clear_pending (EV_A_ (W)w);
		1487	if (!ev_is_active (w))
		1488	return;
		1489
		1490	checks [((W)w)->active - 1] = checks [--checkcnt];
		1491	ev_stop (EV_A_ (W)w);
		1492	}
		1493
		1494	#ifndef SA_RESTART
		1495	# define SA_RESTART 0
		1496	#endif
		1497
		1498	void
		1499	ev_signal_start (EV_P_ struct ev_signal *w)
		1500	{
		1501	#if EV_MULTIPLICITY
		1502	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1503	#endif
		1504	if (ev_is_active (w))
		1505	return;
		1506
889	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1507	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
890		1508
891	ev_start ((W)w, 1);	1509	ev_start (EV_A_ (W)w, 1);
892	array_needsize (signals, signalmax, w->signum, signals_init);	1510	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
893	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1511	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
894		1512
895	if (!w->next)	1513	if (!((WL)w)->next)
896	{	1514	{
		1515	#if WIN32
		1516	signal (w->signum, sighandler);
		1517	#else
897	struct sigaction sa;	1518	struct sigaction sa;
898	sa.sa_handler = sighandler;	1519	sa.sa_handler = sighandler;
899	sigfillset (&sa.sa_mask);	1520	sigfillset (&sa.sa_mask);
900	sa.sa_flags = 0;	1521	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
901	sigaction (w->signum, &sa, 0);	1522	sigaction (w->signum, &sa, 0);
		1523	#endif
902	}	1524	}
903	}	1525	}
904		1526
905	void	1527	void
906	ev_signal_stop (struct ev_signal *w)	1528	ev_signal_stop (EV_P_ struct ev_signal *w)
907	{	1529	{
908	ev_clear_pending ((W)w);	1530	ev_clear_pending (EV_A_ (W)w);
909	if (!ev_is_active (w))	1531	if (!ev_is_active (w))
910	return;	1532	return;
911		1533
912	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1534	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
913	ev_stop ((W)w);	1535	ev_stop (EV_A_ (W)w);
914		1536
915	if (!signals [w->signum - 1].head)	1537	if (!signals [w->signum - 1].head)
916	signal (w->signum, SIG_DFL);	1538	signal (w->signum, SIG_DFL);
917	}	1539	}
918		1540
919	void	1541	void
920	ev_idle_start (struct ev_idle *w)	1542	ev_child_start (EV_P_ struct ev_child *w)
921	{	1543	{
		1544	#if EV_MULTIPLICITY
		1545	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1546	#endif
922	if (ev_is_active (w))	1547	if (ev_is_active (w))
923	return;	1548	return;
924		1549
925	ev_start ((W)w, ++idlecnt);
926	array_needsize (idles, idlemax, idlecnt, );
927	idles [idlecnt - 1] = w;
928	}
929
930	void
931	ev_idle_stop (struct ev_idle *w)
932	{
933	ev_clear_pending ((W)w);
934	if (ev_is_active (w))
935	return;
936
937	idles [w->active - 1] = idles [--idlecnt];
938	ev_stop ((W)w);
939	}
940
941	void
942	ev_prepare_start (struct ev_prepare *w)
943	{
944	if (ev_is_active (w))
945	return;
946
947	ev_start ((W)w, ++preparecnt);
948	array_needsize (prepares, preparemax, preparecnt, );
949	prepares [preparecnt - 1] = w;
950	}
951
952	void
953	ev_prepare_stop (struct ev_prepare *w)
954	{
955	ev_clear_pending ((W)w);
956	if (ev_is_active (w))
957	return;
958
959	prepares [w->active - 1] = prepares [--preparecnt];
960	ev_stop ((W)w);
961	}
962
963	void
964	ev_check_start (struct ev_check *w)
965	{
966	if (ev_is_active (w))
967	return;
968
969	ev_start ((W)w, ++checkcnt);
970	array_needsize (checks, checkmax, checkcnt, );
971	checks [checkcnt - 1] = w;
972	}
973
974	void
975	ev_check_stop (struct ev_check *w)
976	{
977	ev_clear_pending ((W)w);
978	if (ev_is_active (w))
979	return;
980
981	checks [w->active - 1] = checks [--checkcnt];
982	ev_stop ((W)w);
983	}
984
985	void
986	ev_child_start (struct ev_child *w)
987	{
988	if (ev_is_active (w))
989	return;
990
991	ev_start ((W)w, 1);	1550	ev_start (EV_A_ (W)w, 1);
992	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1551	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
993	}	1552	}
994		1553
995	void	1554	void
996	ev_child_stop (struct ev_child *w)	1555	ev_child_stop (EV_P_ struct ev_child *w)
997	{	1556	{
998	ev_clear_pending ((W)w);	1557	ev_clear_pending (EV_A_ (W)w);
999	if (ev_is_active (w))	1558	if (!ev_is_active (w))
1000	return;	1559	return;
1001		1560
1002	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1561	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1003	ev_stop ((W)w);	1562	ev_stop (EV_A_ (W)w);
1004	}	1563	}
1005		1564
1006	/*****************************************************************************/	1565	/*****************************************************************************/
1007		1566
1008	struct ev_once	1567	struct ev_once
…		…
1012	void (*cb)(int revents, void *arg);	1571	void (*cb)(int revents, void *arg);
1013	void *arg;	1572	void *arg;
1014	};	1573	};
1015		1574
1016	static void	1575	static void
1017	once_cb (struct ev_once *once, int revents)	1576	once_cb (EV_P_ struct ev_once *once, int revents)
1018	{	1577	{
1019	void (*cb)(int revents, void *arg) = once->cb;	1578	void (*cb)(int revents, void *arg) = once->cb;
1020	void *arg = once->arg;	1579	void *arg = once->arg;
1021		1580
1022	ev_io_stop (&once->io);	1581	ev_io_stop (EV_A_ &once->io);
1023	ev_timer_stop (&once->to);	1582	ev_timer_stop (EV_A_ &once->to);
1024	free (once);	1583	ev_free (once);
1025		1584
1026	cb (revents, arg);	1585	cb (revents, arg);
1027	}	1586	}
1028		1587
1029	static void	1588	static void
1030	once_cb_io (struct ev_io *w, int revents)	1589	once_cb_io (EV_P_ struct ev_io *w, int revents)
1031	{	1590	{
1032	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1591	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1033	}	1592	}
1034		1593
1035	static void	1594	static void
1036	once_cb_to (struct ev_timer *w, int revents)	1595	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1037	{	1596	{
1038	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1597	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1039	}	1598	}
1040		1599
1041	void	1600	void
1042	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1601	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1043	{	1602	{
1044	struct ev_once *once = malloc (sizeof (struct ev_once));	1603	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1045		1604
1046	if (!once)	1605	if (!once)
1047	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1606	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1048	else	1607	else
1049	{	1608	{
1050	once->cb = cb;	1609	once->cb = cb;
1051	once->arg = arg;	1610	once->arg = arg;
1052		1611
1053	ev_watcher_init (&once->io, once_cb_io);	1612	ev_init (&once->io, once_cb_io);
1054	if (fd >= 0)	1613	if (fd >= 0)
1055	{	1614	{
1056	ev_io_set (&once->io, fd, events);	1615	ev_io_set (&once->io, fd, events);
1057	ev_io_start (&once->io);	1616	ev_io_start (EV_A_ &once->io);
1058	}	1617	}
1059		1618
1060	ev_watcher_init (&once->to, once_cb_to);	1619	ev_init (&once->to, once_cb_to);
1061	if (timeout >= 0.)	1620	if (timeout >= 0.)
1062	{	1621	{
1063	ev_timer_set (&once->to, timeout, 0.);	1622	ev_timer_set (&once->to, timeout, 0.);
1064	ev_timer_start (&once->to);	1623	ev_timer_start (EV_A_ &once->to);
1065	}	1624	}
1066	}	1625	}
1067	}	1626	}
1068		1627
1069	/*****************************************************************************/	1628	#ifdef __cplusplus
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	}	1629	}
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	{
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	1630	#endif
1125		1631
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	}
1146
1147	#endif
1148
1149
1150
1151

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