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Comparing libev/ev.c (file contents):
Revision 1.53 by root, Sat Nov 3 22:31:11 2007 UTC vs.
Revision 1.139 by root, Sun Nov 25 09:24:37 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
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
		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
33	#endif	99	#endif
34		100
35	#include <math.h>	101	#include <math.h>
36	#include <stdlib.h>	102	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	103	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	104	#include <stddef.h>
41		105
42	#include <stdio.h>	106	#include <stdio.h>
43		107
44	#include <assert.h>	108	#include <assert.h>
45	#include <errno.h>	109	#include <errno.h>
46	#include <sys/types.h>	110	#include <sys/types.h>
		111	#include <time.h>
		112
		113	#include <signal.h>
		114
47	#ifndef WIN32	115	#ifndef _WIN32
		116	# include <unistd.h>
		117	# include <sys/time.h>
48	# include <sys/wait.h>	118	# include <sys/wait.h>
		119	#else
		120	# define WIN32_LEAN_AND_MEAN
		121	# include <windows.h>
		122	# ifndef EV_SELECT_IS_WINSOCKET
		123	# define EV_SELECT_IS_WINSOCKET 1
49	#endif	124	# endif
50	#include <sys/time.h>	125	#endif
51	#include <time.h>
52		126
53	/**/	127	/**/
54		128
55	#ifndef EV_USE_MONOTONIC	129	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	130	# define EV_USE_MONOTONIC 0
		131	#endif
		132
		133	#ifndef EV_USE_REALTIME
		134	# define EV_USE_REALTIME 0
57	#endif	135	#endif
58		136
59	#ifndef EV_USE_SELECT	137	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	138	# define EV_USE_SELECT 1
61	#endif	139	#endif
62		140
63	#ifndef EV_USEV_POLL	141	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	142	# ifdef _WIN32
		143	# define EV_USE_POLL 0
		144	# else
		145	# define EV_USE_POLL 1
		146	# endif
65	#endif	147	#endif
66		148
67	#ifndef EV_USE_EPOLL	149	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	150	# define EV_USE_EPOLL 0
69	#endif	151	#endif
70		152
71	#ifndef EV_USE_KQUEUE	153	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	154	# define EV_USE_KQUEUE 0
73	#endif	155	#endif
74		156
75	#ifndef EV_USE_REALTIME	157	#ifndef EV_USE_PORT
76	# define EV_USE_REALTIME 1	158	# define EV_USE_PORT 0
77	#endif	159	#endif
78		160
79	/**/	161	/**/
80		162
81	#ifndef CLOCK_MONOTONIC	163	#ifndef CLOCK_MONOTONIC
…		…
86	#ifndef CLOCK_REALTIME	168	#ifndef CLOCK_REALTIME
87	# undef EV_USE_REALTIME	169	# undef EV_USE_REALTIME
88	# define EV_USE_REALTIME 0	170	# define EV_USE_REALTIME 0
89	#endif	171	#endif
90		172
		173	#if EV_SELECT_IS_WINSOCKET
		174	# include <winsock.h>
		175	#endif
		176
91	/**/	177	/**/
92		178
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	179	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	180	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	181	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/*#define CLEANUP_INTERVAL 300. /* how often to try to free memory and re-check fds */	182	/*#define CLEANUP_INTERVAL (MAX_BLOCKTIME * 5.) /* how often to try to free memory and re-check fds */
97		183
		184	#ifdef EV_H
		185	# include EV_H
		186	#else
98	#include "ev.h"	187	# include "ev.h"
		188	#endif
99		189
100	#if __GNUC__ >= 3	190	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	191	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	192	# define inline static inline
103	#else	193	#else
104	# define expect(expr,value) (expr)	194	# define expect(expr,value) (expr)
105	# define inline static	195	# define inline static
106	#endif	196	#endif
107		197
…		…
109	#define expect_true(expr) expect ((expr) != 0, 1)	199	#define expect_true(expr) expect ((expr) != 0, 1)
110		200
111	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	201	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
112	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	202	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
113		203
		204	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		205	#define EMPTY2(a,b) /* used to suppress some warnings */
		206
114	typedef struct ev_watcher *W;	207	typedef ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	208	typedef ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	209	typedef ev_watcher_time *WT;
		210
		211	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
		212
		213	#ifdef _WIN32
		214	# include "ev_win32.c"
		215	#endif
117		216
118	/*****************************************************************************/	217	/*****************************************************************************/
119		218
		219	static void (*syserr_cb)(const char *msg);
		220
		221	void ev_set_syserr_cb (void (*cb)(const char *msg))
		222	{
		223	syserr_cb = cb;
		224	}
		225
		226	static void
		227	syserr (const char *msg)
		228	{
		229	if (!msg)
		230	msg = "(libev) system error";
		231
		232	if (syserr_cb)
		233	syserr_cb (msg);
		234	else
		235	{
		236	perror (msg);
		237	abort ();
		238	}
		239	}
		240
		241	static void *(*alloc)(void *ptr, long size);
		242
		243	void ev_set_allocator (void *(*cb)(void *ptr, long size))
		244	{
		245	alloc = cb;
		246	}
		247
		248	static void *
		249	ev_realloc (void *ptr, long size)
		250	{
		251	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		252
		253	if (!ptr && size)
		254	{
		255	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		256	abort ();
		257	}
		258
		259	return ptr;
		260	}
		261
		262	#define ev_malloc(size) ev_realloc (0, (size))
		263	#define ev_free(ptr) ev_realloc ((ptr), 0)
		264
		265	/*****************************************************************************/
		266
120	typedef struct	267	typedef struct
121	{	268	{
122	struct ev_watcher_list *head;	269	WL head;
123	unsigned char events;	270	unsigned char events;
124	unsigned char reify;	271	unsigned char reify;
		272	#if EV_SELECT_IS_WINSOCKET
		273	SOCKET handle;
		274	#endif
125	} ANFD;	275	} ANFD;
126		276
127	typedef struct	277	typedef struct
128	{	278	{
129	W w;	279	W w;
130	int events;	280	int events;
131	} ANPENDING;	281	} ANPENDING;
132		282
133	#ifdef EV_MULTIPLICITY	283	#if EV_MULTIPLICITY
		284
134	struct ev_loop	285	struct ev_loop
135	{	286	{
		287	ev_tstamp ev_rt_now;
		288	#define ev_rt_now ((loop)->ev_rt_now)
136	# define VAR(name,decl) decl	289	#define VAR(name,decl) decl;
137	# include "ev_vars.h"	290	#include "ev_vars.h"
138	};	291	#undef VAR
		292	};
		293	#include "ev_wrap.h"
		294
		295	static struct ev_loop default_loop_struct;
		296	struct ev_loop *ev_default_loop_ptr;
		297
139	#else	298	#else
		299
		300	ev_tstamp ev_rt_now;
140	# define VAR(name,decl) static decl	301	#define VAR(name,decl) static decl;
141	# include "ev_vars.h"	302	#include "ev_vars.h"
142	#endif
143	#undef VAR	303	#undef VAR
		304
		305	static int ev_default_loop_ptr;
		306
		307	#endif
144		308
145	/*****************************************************************************/	309	/*****************************************************************************/
146		310
147	inline ev_tstamp	311	ev_tstamp
148	ev_time (void)	312	ev_time (void)
149	{	313	{
150	#if EV_USE_REALTIME	314	#if EV_USE_REALTIME
151	struct timespec ts;	315	struct timespec ts;
152	clock_gettime (CLOCK_REALTIME, &ts);	316	clock_gettime (CLOCK_REALTIME, &ts);
…		…
171	#endif	335	#endif
172		336
173	return ev_time ();	337	return ev_time ();
174	}	338	}
175		339
		340	#if EV_MULTIPLICITY
176	ev_tstamp	341	ev_tstamp
177	ev_now (EV_P)	342	ev_now (EV_P)
178	{	343	{
179	return rt_now;	344	return ev_rt_now;
180	}	345	}
		346	#endif
181		347
182	#define array_roundsize(base,n) ((n) | 4 & ~3)	348	#define array_roundsize(type,n) (((n) | 4) & ~3)
183		349
184	#define array_needsize(base,cur,cnt,init) \	350	#define array_needsize(type,base,cur,cnt,init) \
185	if (expect_false ((cnt) > cur)) \	351	if (expect_false ((cnt) > cur)) \
186	{ \	352	{ \
187	int newcnt = cur; \	353	int newcnt = cur; \
188	do \	354	do \
189	{ \	355	{ \
190	newcnt = array_roundsize (base, newcnt << 1); \	356	newcnt = array_roundsize (type, newcnt << 1); \
191	} \	357	} \
192	while ((cnt) > newcnt); \	358	while ((cnt) > newcnt); \
193	\	359	\
194	base = realloc (base, sizeof (*base) * (newcnt)); \	360	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
195	init (base + cur, newcnt - cur); \	361	init (base + cur, newcnt - cur); \
196	cur = newcnt; \	362	cur = newcnt; \
197	}	363	}
		364
		365	#define array_slim(type,stem) \
		366	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		367	{ \
		368	stem ## max = array_roundsize (stem ## cnt >> 1); \
		369	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		370	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		371	}
		372
		373	#define array_free(stem, idx) \
		374	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
198		375
199	/*****************************************************************************/	376	/*****************************************************************************/
200		377
201	static void	378	static void
202	anfds_init (ANFD *base, int count)	379	anfds_init (ANFD *base, int count)
…		…
209		386
210	++base;	387	++base;
211	}	388	}
212	}	389	}
213		390
214	static void	391	void
215	event (EV_P_ W w, int events)	392	ev_feed_event (EV_P_ void *w, int revents)
216	{	393	{
217	if (w->pending)	394	W w_ = (W)w;
		395
		396	if (expect_false (w_->pending))
218	{	397	{
219	pendings [ABSPRI (w)][w->pending - 1].events |= events;	398	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
220	return;	399	return;
221	}	400	}
222		401
223	w->pending = ++pendingcnt [ABSPRI (w)];	402	w_->pending = ++pendingcnt [ABSPRI (w_)];
224	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	403	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
225	pendings [ABSPRI (w)][w->pending - 1].w = w;	404	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
226	pendings [ABSPRI (w)][w->pending - 1].events = events;	405	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
227	}	406	}
228		407
229	static void	408	static void
230	queue_events (EV_P_ W *events, int eventcnt, int type)	409	queue_events (EV_P_ W *events, int eventcnt, int type)
231	{	410	{
232	int i;	411	int i;
233		412
234	for (i = 0; i < eventcnt; ++i)	413	for (i = 0; i < eventcnt; ++i)
235	event (EV_A_ events [i], type);	414	ev_feed_event (EV_A_ events [i], type);
236	}	415	}
237		416
238	static void	417	inline void
239	fd_event (EV_P_ int fd, int events)	418	fd_event (EV_P_ int fd, int revents)
240	{	419	{
241	ANFD *anfd = anfds + fd;	420	ANFD *anfd = anfds + fd;
242	struct ev_io *w;	421	ev_io *w;
243		422
244	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	423	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
245	{	424	{
246	int ev = w->events & events;	425	int ev = w->events & revents;
247		426
248	if (ev)	427	if (ev)
249	event (EV_A_ (W)w, ev);	428	ev_feed_event (EV_A_ (W)w, ev);
250	}	429	}
		430	}
		431
		432	void
		433	ev_feed_fd_event (EV_P_ int fd, int revents)
		434	{
		435	fd_event (EV_A_ fd, revents);
251	}	436	}
252		437
253	/*****************************************************************************/	438	/*****************************************************************************/
254		439
255	static void	440	inline void
256	fd_reify (EV_P)	441	fd_reify (EV_P)
257	{	442	{
258	int i;	443	int i;
259		444
260	for (i = 0; i < fdchangecnt; ++i)	445	for (i = 0; i < fdchangecnt; ++i)
261	{	446	{
262	int fd = fdchanges [i];	447	int fd = fdchanges [i];
263	ANFD *anfd = anfds + fd;	448	ANFD *anfd = anfds + fd;
264	struct ev_io *w;	449	ev_io *w;
265		450
266	int events = 0;	451	int events = 0;
267		452
268	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	453	for (w = (ev_io *)anfd->head; w; w = (ev_io *)((WL)w)->next)
269	events |= w->events;	454	events |= w->events;
270		455
		456	#if EV_SELECT_IS_WINSOCKET
		457	if (events)
		458	{
		459	unsigned long argp;
		460	anfd->handle = _get_osfhandle (fd);
		461	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		462	}
		463	#endif
		464
271	anfd->reify = 0;	465	anfd->reify = 0;
272		466
273	if (anfd->events != events)
274	{
275	method_modify (EV_A_ fd, anfd->events, events);	467	backend_modify (EV_A_ fd, anfd->events, events);
276	anfd->events = events;	468	anfd->events = events;
277	}
278	}	469	}
279		470
280	fdchangecnt = 0;	471	fdchangecnt = 0;
281	}	472	}
282		473
283	static void	474	static void
284	fd_change (EV_P_ int fd)	475	fd_change (EV_P_ int fd)
285	{	476	{
286	if (anfds [fd].reify || fdchangecnt < 0)	477	if (expect_false (anfds [fd].reify))
287	return;	478	return;
288		479
289	anfds [fd].reify = 1;	480	anfds [fd].reify = 1;
290		481
291	++fdchangecnt;	482	++fdchangecnt;
292	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	483	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
293	fdchanges [fdchangecnt - 1] = fd;	484	fdchanges [fdchangecnt - 1] = fd;
294	}	485	}
295		486
296	static void	487	static void
297	fd_kill (EV_P_ int fd)	488	fd_kill (EV_P_ int fd)
298	{	489	{
299	struct ev_io *w;	490	ev_io *w;
300		491
301	while ((w = (struct ev_io *)anfds [fd].head))	492	while ((w = (ev_io *)anfds [fd].head))
302	{	493	{
303	ev_io_stop (EV_A_ w);	494	ev_io_stop (EV_A_ w);
304	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	495	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	496	}
		497	}
		498
		499	inline int
		500	fd_valid (int fd)
		501	{
		502	#ifdef _WIN32
		503	return _get_osfhandle (fd) != -1;
		504	#else
		505	return fcntl (fd, F_GETFD) != -1;
		506	#endif
306	}	507	}
307		508
308	/* called on EBADF to verify fds */	509	/* called on EBADF to verify fds */
309	static void	510	static void
310	fd_ebadf (EV_P)	511	fd_ebadf (EV_P)
311	{	512	{
312	int fd;	513	int fd;
313		514
314	for (fd = 0; fd < anfdmax; ++fd)	515	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	516	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	517	if (!fd_valid (fd) == -1 && errno == EBADF)
317	fd_kill (EV_A_ fd);	518	fd_kill (EV_A_ fd);
318	}	519	}
319		520
320	/* called on ENOMEM in select/poll to kill some fds and retry */	521	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	522	static void
322	fd_enomem (EV_P)	523	fd_enomem (EV_P)
323	{	524	{
324	int fd = anfdmax;	525	int fd;
325		526
326	while (fd--)	527	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	528	if (anfds [fd].events)
328	{	529	{
329	close (fd);
330	fd_kill (EV_A_ fd);	530	fd_kill (EV_A_ fd);
331	return;	531	return;
332	}	532	}
333	}	533	}
334		534
		535	/* usually called after fork if backend needs to re-arm all fds from scratch */
		536	static void
		537	fd_rearm_all (EV_P)
		538	{
		539	int fd;
		540
		541	/* this should be highly optimised to not do anything but set a flag */
		542	for (fd = 0; fd < anfdmax; ++fd)
		543	if (anfds [fd].events)
		544	{
		545	anfds [fd].events = 0;
		546	fd_change (EV_A_ fd);
		547	}
		548	}
		549
335	/*****************************************************************************/	550	/*****************************************************************************/
336		551
337	static void	552	static void
338	upheap (WT *timers, int k)	553	upheap (WT *heap, int k)
339	{	554	{
340	WT w = timers [k];	555	WT w = heap [k];
341		556
342	while (k && timers [k >> 1]->at > w->at)	557	while (k && heap [k >> 1]->at > w->at)
343	{	558	{
344	timers [k] = timers [k >> 1];	559	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	560	((W)heap [k])->active = k + 1;
346	k >>= 1;	561	k >>= 1;
347	}	562	}
348		563
349	timers [k] = w;	564	heap [k] = w;
350	timers [k]->active = k + 1;	565	((W)heap [k])->active = k + 1;
351		566
352	}	567	}
353		568
354	static void	569	static void
355	downheap (WT *timers, int N, int k)	570	downheap (WT *heap, int N, int k)
356	{	571	{
357	WT w = timers [k];	572	WT w = heap [k];
358		573
359	while (k < (N >> 1))	574	while (k < (N >> 1))
360	{	575	{
361	int j = k << 1;	576	int j = k << 1;
362		577
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	578	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	579	++j;
365		580
366	if (w->at <= timers [j]->at)	581	if (w->at <= heap [j]->at)
367	break;	582	break;
368		583
369	timers [k] = timers [j];	584	heap [k] = heap [j];
370	timers [k]->active = k + 1;	585	((W)heap [k])->active = k + 1;
371	k = j;	586	k = j;
372	}	587	}
373		588
374	timers [k] = w;	589	heap [k] = w;
375	timers [k]->active = k + 1;	590	((W)heap [k])->active = k + 1;
		591	}
		592
		593	inline void
		594	adjustheap (WT *heap, int N, int k)
		595	{
		596	upheap (heap, k);
		597	downheap (heap, N, k);
376	}	598	}
377		599
378	/*****************************************************************************/	600	/*****************************************************************************/
379		601
380	typedef struct	602	typedef struct
381	{	603	{
382	struct ev_watcher_list *head;	604	WL head;
383	sig_atomic_t volatile gotsig;	605	sig_atomic_t volatile gotsig;
384	} ANSIG;	606	} ANSIG;
385		607
386	static ANSIG *signals;	608	static ANSIG *signals;
387	static int signalmax;	609	static int signalmax;
388		610
389	static int sigpipe [2];	611	static int sigpipe [2];
390	static sig_atomic_t volatile gotsig;	612	static sig_atomic_t volatile gotsig;
		613	static ev_io sigev;
391		614
392	static void	615	static void
393	signals_init (ANSIG *base, int count)	616	signals_init (ANSIG *base, int count)
394	{	617	{
395	while (count--)	618	while (count--)
…		…
402	}	625	}
403		626
404	static void	627	static void
405	sighandler (int signum)	628	sighandler (int signum)
406	{	629	{
		630	#if _WIN32
		631	signal (signum, sighandler);
		632	#endif
		633
407	signals [signum - 1].gotsig = 1;	634	signals [signum - 1].gotsig = 1;
408		635
409	if (!gotsig)	636	if (!gotsig)
410	{	637	{
411	int old_errno = errno;	638	int old_errno = errno;
…		…
413	write (sigpipe [1], &signum, 1);	640	write (sigpipe [1], &signum, 1);
414	errno = old_errno;	641	errno = old_errno;
415	}	642	}
416	}	643	}
417		644
		645	void
		646	ev_feed_signal_event (EV_P_ int signum)
		647	{
		648	WL w;
		649
		650	#if EV_MULTIPLICITY
		651	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		652	#endif
		653
		654	--signum;
		655
		656	if (signum < 0 || signum >= signalmax)
		657	return;
		658
		659	signals [signum].gotsig = 0;
		660
		661	for (w = signals [signum].head; w; w = w->next)
		662	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		663	}
		664
418	static void	665	static void
419	sigcb (EV_P_ struct ev_io *iow, int revents)	666	sigcb (EV_P_ ev_io *iow, int revents)
420	{	667	{
421	struct ev_watcher_list *w;
422	int signum;	668	int signum;
423		669
424	read (sigpipe [0], &revents, 1);	670	read (sigpipe [0], &revents, 1);
425	gotsig = 0;	671	gotsig = 0;
426		672
427	for (signum = signalmax; signum--; )	673	for (signum = signalmax; signum--; )
428	if (signals [signum].gotsig)	674	if (signals [signum].gotsig)
429	{	675	ev_feed_signal_event (EV_A_ signum + 1);
430	signals [signum].gotsig = 0;	676	}
431		677
432	for (w = signals [signum].head; w; w = w->next)	678	static void
433	event (EV_A_ (W)w, EV_SIGNAL);	679	fd_intern (int fd)
434	}	680	{
		681	#ifdef _WIN32
		682	int arg = 1;
		683	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		684	#else
		685	fcntl (fd, F_SETFD, FD_CLOEXEC);
		686	fcntl (fd, F_SETFL, O_NONBLOCK);
		687	#endif
435	}	688	}
436		689
437	static void	690	static void
438	siginit (EV_P)	691	siginit (EV_P)
439	{	692	{
440	#ifndef WIN32	693	fd_intern (sigpipe [0]);
441	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	694	fd_intern (sigpipe [1]);
442	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
443
444	/* rather than sort out wether we really need nb, set it */
445	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
446	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
447	#endif
448		695
449	ev_io_set (&sigev, sigpipe [0], EV_READ);	696	ev_io_set (&sigev, sigpipe [0], EV_READ);
450	ev_io_start (&sigev);	697	ev_io_start (EV_A_ &sigev);
451	ev_unref (EV_A); /* child watcher should not keep loop alive */	698	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	699	}
453		700
454	/*****************************************************************************/	701	/*****************************************************************************/
455		702
		703	static ev_child *childs [PID_HASHSIZE];
		704
456	#ifndef WIN32	705	#ifndef _WIN32
		706
		707	static ev_signal childev;
457		708
458	#ifndef WCONTINUED	709	#ifndef WCONTINUED
459	# define WCONTINUED 0	710	# define WCONTINUED 0
460	#endif	711	#endif
461		712
462	static void	713	static void
463	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)	714	child_reap (EV_P_ ev_signal *sw, int chain, int pid, int status)
464	{	715	{
465	struct ev_child *w;	716	ev_child *w;
466		717
467	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	718	for (w = (ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (ev_child *)((WL)w)->next)
468	if (w->pid == pid || !w->pid)	719	if (w->pid == pid || !w->pid)
469	{	720	{
470	w->priority = sw->priority; /* need to do it *now* */	721	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
471	w->rpid = pid;	722	w->rpid = pid;
472	w->rstatus = status;	723	w->rstatus = status;
473	event (EV_A_ (W)w, EV_CHILD);	724	ev_feed_event (EV_A_ (W)w, EV_CHILD);
474	}	725	}
475	}	726	}
476		727
477	static void	728	static void
478	childcb (EV_P_ struct ev_signal *sw, int revents)	729	childcb (EV_P_ ev_signal *sw, int revents)
479	{	730	{
480	int pid, status;	731	int pid, status;
481		732
482	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	733	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
483	{	734	{
484	/* make sure we are called again until all childs have been reaped */	735	/* make sure we are called again until all childs have been reaped */
		736	/* we need to do it this way so that the callback gets called before we continue */
485	event (EV_A_ (W)sw, EV_SIGNAL);	737	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
486		738
487	child_reap (EV_A_ sw, pid, pid, status);	739	child_reap (EV_A_ sw, pid, pid, status);
488	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	740	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but feed_event catches that */
489	}	741	}
490	}	742	}
491		743
492	#endif	744	#endif
493		745
494	/*****************************************************************************/	746	/*****************************************************************************/
495		747
		748	#if EV_USE_PORT
		749	# include "ev_port.c"
		750	#endif
496	#if EV_USE_KQUEUE	751	#if EV_USE_KQUEUE
497	# include "ev_kqueue.c"	752	# include "ev_kqueue.c"
498	#endif	753	#endif
499	#if EV_USE_EPOLL	754	#if EV_USE_EPOLL
500	# include "ev_epoll.c"	755	# include "ev_epoll.c"
501	#endif	756	#endif
502	#if EV_USEV_POLL	757	#if EV_USE_POLL
503	# include "ev_poll.c"	758	# include "ev_poll.c"
504	#endif	759	#endif
505	#if EV_USE_SELECT	760	#if EV_USE_SELECT
506	# include "ev_select.c"	761	# include "ev_select.c"
507	#endif	762	#endif
…		…
520		775
521	/* return true if we are running with elevated privileges and should ignore env variables */	776	/* return true if we are running with elevated privileges and should ignore env variables */
522	static int	777	static int
523	enable_secure (void)	778	enable_secure (void)
524	{	779	{
525	#ifdef WIN32	780	#ifdef _WIN32
526	return 0;	781	return 0;
527	#else	782	#else
528	return getuid () != geteuid ()	783	return getuid () != geteuid ()
529	|| getgid () != getegid ();	784	|| getgid () != getegid ();
530	#endif	785	#endif
531	}	786	}
532		787
533	int	788	unsigned int
534	ev_method (EV_P)	789	ev_supported_backends (void)
535	{	790	{
536	return method;	791	unsigned int flags = 0;
537	}
538		792
539	int	793	if (EV_USE_PORT ) flags |= EVBACKEND_PORT;
540	ev_init (EV_P_ int methods)	794	if (EV_USE_KQUEUE) flags |= EVBACKEND_KQUEUE;
541	{	795	if (EV_USE_EPOLL ) flags |= EVBACKEND_EPOLL;
542	#ifdef EV_MULTIPLICITY	796	if (EV_USE_POLL ) flags |= EVBACKEND_POLL;
543	memset (loop, 0, sizeof (struct ev_loop));	797	if (EV_USE_SELECT) flags |= EVBACKEND_SELECT;
544	#endif	798
		799	return flags;
		800	}
545		801
546	if (!method)	802	unsigned int
		803	ev_recommended_backends (void)
		804	{
		805	unsigned int flags = ev_supported_backends ();
		806
		807	#ifndef __NetBSD__
		808	/* kqueue is borked on everything but netbsd apparently */
		809	/* it usually doesn't work correctly on anything but sockets and pipes */
		810	flags &= ~EVBACKEND_KQUEUE;
		811	#endif
		812	#ifdef __APPLE__
		813	// flags &= ~EVBACKEND_KQUEUE; for documentation
		814	flags &= ~EVBACKEND_POLL;
		815	#endif
		816
		817	return flags;
		818	}
		819
		820	unsigned int
		821	ev_embeddable_backends (void)
		822	{
		823	return EVBACKEND_EPOLL
		824	| EVBACKEND_KQUEUE
		825	| EVBACKEND_PORT;
		826	}
		827
		828	unsigned int
		829	ev_backend (EV_P)
		830	{
		831	return backend;
		832	}
		833
		834	static void
		835	loop_init (EV_P_ unsigned int flags)
		836	{
		837	if (!backend)
547	{	838	{
548	#if EV_USE_MONOTONIC	839	#if EV_USE_MONOTONIC
549	{	840	{
550	struct timespec ts;	841	struct timespec ts;
551	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	842	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
552	have_monotonic = 1;	843	have_monotonic = 1;
553	}	844	}
554	#endif	845	#endif
555		846
556	rt_now = ev_time ();	847	ev_rt_now = ev_time ();
557	mn_now = get_clock ();	848	mn_now = get_clock ();
558	now_floor = mn_now;	849	now_floor = mn_now;
559	diff = rt_now - mn_now;	850	rtmn_diff = ev_rt_now - mn_now;
560		851
561	if (pipe (sigpipe))	852	if (!(flags & EVFLAG_NOENV)
562	return 0;	853	&& !enable_secure ()
		854	&& getenv ("LIBEV_FLAGS"))
		855	flags = atoi (getenv ("LIBEV_FLAGS"));
563		856
564	if (methods == EVMETHOD_AUTO)	857	if (!(flags & 0x0000ffffUL))
565	if (!enable_secure () && getenv ("LIBmethodS"))	858	flags |= ev_recommended_backends ();
566	methods = atoi (getenv ("LIBmethodS"));
567	else
568	methods = EVMETHOD_ANY;
569		859
570	method = 0;	860	backend = 0;
		861	#if EV_USE_PORT
		862	if (!backend && (flags & EVBACKEND_PORT )) backend = port_init (EV_A_ flags);
		863	#endif
571	#if EV_USE_KQUEUE	864	#if EV_USE_KQUEUE
572	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	865	if (!backend && (flags & EVBACKEND_KQUEUE)) backend = kqueue_init (EV_A_ flags);
573	#endif	866	#endif
574	#if EV_USE_EPOLL	867	#if EV_USE_EPOLL
575	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	868	if (!backend && (flags & EVBACKEND_EPOLL )) backend = epoll_init (EV_A_ flags);
576	#endif	869	#endif
577	#if EV_USEV_POLL	870	#if EV_USE_POLL
578	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	871	if (!backend && (flags & EVBACKEND_POLL )) backend = poll_init (EV_A_ flags);
579	#endif	872	#endif
580	#if EV_USE_SELECT	873	#if EV_USE_SELECT
581	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	874	if (!backend && (flags & EVBACKEND_SELECT)) backend = select_init (EV_A_ flags);
582	#endif	875	#endif
583		876
584	if (method)	877	ev_init (&sigev, sigcb);
		878	ev_set_priority (&sigev, EV_MAXPRI);
		879	}
		880	}
		881
		882	static void
		883	loop_destroy (EV_P)
		884	{
		885	int i;
		886
		887	#if EV_USE_PORT
		888	if (backend == EVBACKEND_PORT ) port_destroy (EV_A);
		889	#endif
		890	#if EV_USE_KQUEUE
		891	if (backend == EVBACKEND_KQUEUE) kqueue_destroy (EV_A);
		892	#endif
		893	#if EV_USE_EPOLL
		894	if (backend == EVBACKEND_EPOLL ) epoll_destroy (EV_A);
		895	#endif
		896	#if EV_USE_POLL
		897	if (backend == EVBACKEND_POLL ) poll_destroy (EV_A);
		898	#endif
		899	#if EV_USE_SELECT
		900	if (backend == EVBACKEND_SELECT) select_destroy (EV_A);
		901	#endif
		902
		903	for (i = NUMPRI; i--; )
		904	array_free (pending, [i]);
		905
		906	/* have to use the microsoft-never-gets-it-right macro */
		907	array_free (fdchange, EMPTY0);
		908	array_free (timer, EMPTY0);
		909	#if EV_PERIODICS
		910	array_free (periodic, EMPTY0);
		911	#endif
		912	array_free (idle, EMPTY0);
		913	array_free (prepare, EMPTY0);
		914	array_free (check, EMPTY0);
		915
		916	backend = 0;
		917	}
		918
		919	static void
		920	loop_fork (EV_P)
		921	{
		922	#if EV_USE_PORT
		923	if (backend == EVBACKEND_PORT ) port_fork (EV_A);
		924	#endif
		925	#if EV_USE_KQUEUE
		926	if (backend == EVBACKEND_KQUEUE) kqueue_fork (EV_A);
		927	#endif
		928	#if EV_USE_EPOLL
		929	if (backend == EVBACKEND_EPOLL ) epoll_fork (EV_A);
		930	#endif
		931
		932	if (ev_is_active (&sigev))
		933	{
		934	/* default loop */
		935
		936	ev_ref (EV_A);
		937	ev_io_stop (EV_A_ &sigev);
		938	close (sigpipe [0]);
		939	close (sigpipe [1]);
		940
		941	while (pipe (sigpipe))
		942	syserr ("(libev) error creating pipe");
		943
		944	siginit (EV_A);
		945	}
		946
		947	postfork = 0;
		948	}
		949
		950	#if EV_MULTIPLICITY
		951	struct ev_loop *
		952	ev_loop_new (unsigned int flags)
		953	{
		954	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		955
		956	memset (loop, 0, sizeof (struct ev_loop));
		957
		958	loop_init (EV_A_ flags);
		959
		960	if (ev_backend (EV_A))
		961	return loop;
		962
		963	return 0;
		964	}
		965
		966	void
		967	ev_loop_destroy (EV_P)
		968	{
		969	loop_destroy (EV_A);
		970	ev_free (loop);
		971	}
		972
		973	void
		974	ev_loop_fork (EV_P)
		975	{
		976	postfork = 1;
		977	}
		978
		979	#endif
		980
		981	#if EV_MULTIPLICITY
		982	struct ev_loop *
		983	ev_default_loop_init (unsigned int flags)
		984	#else
		985	int
		986	ev_default_loop (unsigned int flags)
		987	#endif
		988	{
		989	if (sigpipe [0] == sigpipe [1])
		990	if (pipe (sigpipe))
		991	return 0;
		992
		993	if (!ev_default_loop_ptr)
		994	{
		995	#if EV_MULTIPLICITY
		996	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
		997	#else
		998	ev_default_loop_ptr = 1;
		999	#endif
		1000
		1001	loop_init (EV_A_ flags);
		1002
		1003	if (ev_backend (EV_A))
585	{	1004	{
586	ev_watcher_init (&sigev, sigcb);
587	ev_set_priority (&sigev, EV_MAXPRI);
588	siginit (EV_A);	1005	siginit (EV_A);
589		1006
590	#ifndef WIN32	1007	#ifndef _WIN32
591	ev_signal_init (&childev, childcb, SIGCHLD);	1008	ev_signal_init (&childev, childcb, SIGCHLD);
592	ev_set_priority (&childev, EV_MAXPRI);	1009	ev_set_priority (&childev, EV_MAXPRI);
593	ev_signal_start (EV_A_ &childev);	1010	ev_signal_start (EV_A_ &childev);
594	ev_unref (EV_A); /* child watcher should not keep loop alive */	1011	ev_unref (EV_A); /* child watcher should not keep loop alive */
595	#endif	1012	#endif
596	}	1013	}
		1014	else
		1015	ev_default_loop_ptr = 0;
597	}	1016	}
598		1017
599	return method;	1018	return ev_default_loop_ptr;
		1019	}
		1020
		1021	void
		1022	ev_default_destroy (void)
		1023	{
		1024	#if EV_MULTIPLICITY
		1025	struct ev_loop *loop = ev_default_loop_ptr;
		1026	#endif
		1027
		1028	#ifndef _WIN32
		1029	ev_ref (EV_A); /* child watcher */
		1030	ev_signal_stop (EV_A_ &childev);
		1031	#endif
		1032
		1033	ev_ref (EV_A); /* signal watcher */
		1034	ev_io_stop (EV_A_ &sigev);
		1035
		1036	close (sigpipe [0]); sigpipe [0] = 0;
		1037	close (sigpipe [1]); sigpipe [1] = 0;
		1038
		1039	loop_destroy (EV_A);
		1040	}
		1041
		1042	void
		1043	ev_default_fork (void)
		1044	{
		1045	#if EV_MULTIPLICITY
		1046	struct ev_loop *loop = ev_default_loop_ptr;
		1047	#endif
		1048
		1049	if (backend)
		1050	postfork = 1;
600	}	1051	}
601		1052
602	/*****************************************************************************/	1053	/*****************************************************************************/
603		1054
604	void
605	ev_fork_prepare (void)
606	{
607	/* nop */
608	}
609
610	void
611	ev_fork_parent (void)
612	{
613	/* nop */
614	}
615
616	void
617	ev_fork_child (void)
618	{
619	#if EV_USE_EPOLL
620	if (method == EVMETHOD_EPOLL)
621	epoll_postfork_child ();
622	#endif
623
624	ev_io_stop (&sigev);
625	close (sigpipe [0]);
626	close (sigpipe [1]);
627	pipe (sigpipe);
628	siginit ();
629	}
630
631	/*****************************************************************************/
632
633	static void	1055	static int
		1056	any_pending (EV_P)
		1057	{
		1058	int pri;
		1059
		1060	for (pri = NUMPRI; pri--; )
		1061	if (pendingcnt [pri])
		1062	return 1;
		1063
		1064	return 0;
		1065	}
		1066
		1067	inline void
634	call_pending (EV_P)	1068	call_pending (EV_P)
635	{	1069	{
636	int pri;	1070	int pri;
637		1071
638	for (pri = NUMPRI; pri--; )	1072	for (pri = NUMPRI; pri--; )
639	while (pendingcnt [pri])	1073	while (pendingcnt [pri])
640	{	1074	{
641	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1075	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
642		1076
643	if (p->w)	1077	if (expect_true (p->w))
644	{	1078	{
		1079	assert (("non-pending watcher on pending list", p->w->pending));
		1080
645	p->w->pending = 0;	1081	p->w->pending = 0;
646	p->w->cb (EV_A_ p->w, p->events);	1082	EV_CB_INVOKE (p->w, p->events);
647	}	1083	}
648	}	1084	}
649	}	1085	}
650		1086
651	static void	1087	inline void
652	timers_reify (EV_P)	1088	timers_reify (EV_P)
653	{	1089	{
654	while (timercnt && timers [0]->at <= mn_now)	1090	while (timercnt && ((WT)timers [0])->at <= mn_now)
655	{	1091	{
656	struct ev_timer *w = timers [0];	1092	ev_timer *w = timers [0];
		1093
		1094	assert (("inactive timer on timer heap detected", ev_is_active (w)));
657		1095
658	/* first reschedule or stop timer */	1096	/* first reschedule or stop timer */
659	if (w->repeat)	1097	if (w->repeat)
660	{	1098	{
661	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1099	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1100
662	w->at = mn_now + w->repeat;	1101	((WT)w)->at += w->repeat;
		1102	if (((WT)w)->at < mn_now)
		1103	((WT)w)->at = mn_now;
		1104
663	downheap ((WT *)timers, timercnt, 0);	1105	downheap ((WT *)timers, timercnt, 0);
664	}	1106	}
665	else	1107	else
666	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1108	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
667		1109
668	event ((W)w, EV_TIMEOUT);	1110	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
669	}	1111	}
670	}	1112	}
671		1113
672	static void	1114	#if EV_PERIODICS
		1115	inline void
673	periodics_reify (EV_P)	1116	periodics_reify (EV_P)
674	{	1117	{
675	while (periodiccnt && periodics [0]->at <= rt_now)	1118	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
676	{	1119	{
677	struct ev_periodic *w = periodics [0];	1120	ev_periodic *w = periodics [0];
		1121
		1122	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
678		1123
679	/* first reschedule or stop timer */	1124	/* first reschedule or stop timer */
680	if (w->interval)	1125	if (w->reschedule_cb)
681	{	1126	{
		1127	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1128	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1129	downheap ((WT *)periodics, periodiccnt, 0);
		1130	}
		1131	else if (w->interval)
		1132	{
682	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1133	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
683	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1134	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
684	downheap ((WT *)periodics, periodiccnt, 0);	1135	downheap ((WT *)periodics, periodiccnt, 0);
685	}	1136	}
686	else	1137	else
687	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1138	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
688		1139
689	event (EV_A_ (W)w, EV_PERIODIC);	1140	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
690	}	1141	}
691	}	1142	}
692		1143
693	static void	1144	static void
694	periodics_reschedule (EV_P_ ev_tstamp diff)	1145	periodics_reschedule (EV_P)
695	{	1146	{
696	int i;	1147	int i;
697		1148
698	/* adjust periodics after time jump */	1149	/* adjust periodics after time jump */
699	for (i = 0; i < periodiccnt; ++i)	1150	for (i = 0; i < periodiccnt; ++i)
700	{	1151	{
701	struct ev_periodic *w = periodics [i];	1152	ev_periodic *w = periodics [i];
702		1153
		1154	if (w->reschedule_cb)
		1155	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
703	if (w->interval)	1156	else if (w->interval)
704	{
705	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1157	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
706
707	if (fabs (diff) >= 1e-4)
708	{
709	ev_periodic_stop (EV_A_ w);
710	ev_periodic_start (EV_A_ w);
711
712	i = 0; /* restart loop, inefficient, but time jumps should be rare */
713	}
714	}
715	}	1158	}
		1159
		1160	/* now rebuild the heap */
		1161	for (i = periodiccnt >> 1; i--; )
		1162	downheap ((WT *)periodics, periodiccnt, i);
716	}	1163	}
		1164	#endif
717		1165
718	inline int	1166	inline int
719	time_update_monotonic (EV_P)	1167	time_update_monotonic (EV_P)
720	{	1168	{
721	mn_now = get_clock ();	1169	mn_now = get_clock ();
722		1170
723	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1171	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
724	{	1172	{
725	rt_now = mn_now + diff;	1173	ev_rt_now = rtmn_diff + mn_now;
726	return 0;	1174	return 0;
727	}	1175	}
728	else	1176	else
729	{	1177	{
730	now_floor = mn_now;	1178	now_floor = mn_now;
731	rt_now = ev_time ();	1179	ev_rt_now = ev_time ();
732	return 1;	1180	return 1;
733	}	1181	}
734	}	1182	}
735		1183
736	static void	1184	inline void
737	time_update (EV_P)	1185	time_update (EV_P)
738	{	1186	{
739	int i;	1187	int i;
740		1188
741	#if EV_USE_MONOTONIC	1189	#if EV_USE_MONOTONIC
742	if (expect_true (have_monotonic))	1190	if (expect_true (have_monotonic))
743	{	1191	{
744	if (time_update_monotonic (EV_A))	1192	if (time_update_monotonic (EV_A))
745	{	1193	{
746	ev_tstamp odiff = diff;	1194	ev_tstamp odiff = rtmn_diff;
747		1195
748	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1196	/* loop a few times, before making important decisions.
		1197	* on the choice of "4": one iteration isn't enough,
		1198	* in case we get preempted during the calls to
		1199	* ev_time and get_clock. a second call is almost guarenteed
		1200	* to succeed in that case, though. and looping a few more times
		1201	* doesn't hurt either as we only do this on time-jumps or
		1202	* in the unlikely event of getting preempted here.
		1203	*/
		1204	for (i = 4; --i; )
749	{	1205	{
750	diff = rt_now - mn_now;	1206	rtmn_diff = ev_rt_now - mn_now;
751		1207
752	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1208	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
753	return; /* all is well */	1209	return; /* all is well */
754		1210
755	rt_now = ev_time ();	1211	ev_rt_now = ev_time ();
756	mn_now = get_clock ();	1212	mn_now = get_clock ();
757	now_floor = mn_now;	1213	now_floor = mn_now;
758	}	1214	}
759		1215
		1216	# if EV_PERIODICS
760	periodics_reschedule (EV_A_ diff - odiff);	1217	periodics_reschedule (EV_A);
		1218	# endif
761	/* no timer adjustment, as the monotonic clock doesn't jump */	1219	/* no timer adjustment, as the monotonic clock doesn't jump */
		1220	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
762	}	1221	}
763	}	1222	}
764	else	1223	else
765	#endif	1224	#endif
766	{	1225	{
767	rt_now = ev_time ();	1226	ev_rt_now = ev_time ();
768		1227
769	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1228	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
770	{	1229	{
		1230	#if EV_PERIODICS
771	periodics_reschedule (EV_A_ rt_now - mn_now);	1231	periodics_reschedule (EV_A);
		1232	#endif
772		1233
773	/* adjust timers. this is easy, as the offset is the same for all */	1234	/* adjust timers. this is easy, as the offset is the same for all */
774	for (i = 0; i < timercnt; ++i)	1235	for (i = 0; i < timercnt; ++i)
775	timers [i]->at += diff;	1236	((WT)timers [i])->at += ev_rt_now - mn_now;
776	}	1237	}
777		1238
778	mn_now = rt_now;	1239	mn_now = ev_rt_now;
779	}	1240	}
780	}	1241	}
781		1242
782	void	1243	void
783	ev_ref (EV_P)	1244	ev_ref (EV_P)
…		…
794	static int loop_done;	1255	static int loop_done;
795		1256
796	void	1257	void
797	ev_loop (EV_P_ int flags)	1258	ev_loop (EV_P_ int flags)
798	{	1259	{
799	double block;
800	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	1260	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK)
		1261	? EVUNLOOP_ONE
		1262	: EVUNLOOP_CANCEL;
801		1263
802	do	1264	while (activecnt)
803	{	1265	{
804	/* queue check watchers (and execute them) */	1266	/* queue check watchers (and execute them) */
805	if (expect_false (preparecnt))	1267	if (expect_false (preparecnt))
806	{	1268	{
807	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1269	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
808	call_pending (EV_A);	1270	call_pending (EV_A);
809	}	1271	}
810		1272
		1273	/* we might have forked, so reify kernel state if necessary */
		1274	if (expect_false (postfork))
		1275	loop_fork (EV_A);
		1276
811	/* update fd-related kernel structures */	1277	/* update fd-related kernel structures */
812	fd_reify (EV_A);	1278	fd_reify (EV_A);
813		1279
814	/* calculate blocking time */	1280	/* calculate blocking time */
		1281	{
		1282	double block;
815		1283
816	/* we only need this for !monotonic clockor timers, but as we basically	1284	if (flags & EVLOOP_NONBLOCK || idlecnt)
817	always have timers, we just calculate it always */	1285	block = 0.; /* do not block at all */
		1286	else
		1287	{
		1288	/* update time to cancel out callback processing overhead */
818	#if EV_USE_MONOTONIC	1289	#if EV_USE_MONOTONIC
819	if (expect_true (have_monotonic))	1290	if (expect_true (have_monotonic))
820	time_update_monotonic (EV_A);	1291	time_update_monotonic (EV_A);
821	else	1292	else
822	#endif	1293	#endif
823	{	1294	{
824	rt_now = ev_time ();	1295	ev_rt_now = ev_time ();
825	mn_now = rt_now;	1296	mn_now = ev_rt_now;
826	}	1297	}
827		1298
828	if (flags & EVLOOP_NONBLOCK || idlecnt)
829	block = 0.;
830	else
831	{
832	block = MAX_BLOCKTIME;	1299	block = MAX_BLOCKTIME;
833		1300
834	if (timercnt)	1301	if (timercnt)
835	{	1302	{
836	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1303	ev_tstamp to = ((WT)timers [0])->at - mn_now + backend_fudge;
837	if (block > to) block = to;	1304	if (block > to) block = to;
838	}	1305	}
839		1306
		1307	#if EV_PERIODICS
840	if (periodiccnt)	1308	if (periodiccnt)
841	{	1309	{
842	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1310	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + backend_fudge;
843	if (block > to) block = to;	1311	if (block > to) block = to;
844	}	1312	}
		1313	#endif
845		1314
846	if (block < 0.) block = 0.;	1315	if (expect_false (block < 0.)) block = 0.;
847	}	1316	}
848		1317
849	method_poll (EV_A_ block);	1318	backend_poll (EV_A_ block);
		1319	}
850		1320
851	/* update rt_now, do magic */	1321	/* update ev_rt_now, do magic */
852	time_update (EV_A);	1322	time_update (EV_A);
853		1323
854	/* queue pending timers and reschedule them */	1324	/* queue pending timers and reschedule them */
855	timers_reify (EV_A); /* relative timers called last */	1325	timers_reify (EV_A); /* relative timers called last */
		1326	#if EV_PERIODICS
856	periodics_reify (EV_A); /* absolute timers called first */	1327	periodics_reify (EV_A); /* absolute timers called first */
		1328	#endif
857		1329
858	/* queue idle watchers unless io or timers are pending */	1330	/* queue idle watchers unless other events are pending */
859	if (!pendingcnt)	1331	if (idlecnt && !any_pending (EV_A))
860	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1332	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
861		1333
862	/* queue check watchers, to be executed first */	1334	/* queue check watchers, to be executed first */
863	if (checkcnt)	1335	if (expect_false (checkcnt))
864	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1336	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
865		1337
866	call_pending (EV_A);	1338	call_pending (EV_A);
867	}
868	while (activecnt && !loop_done);
869		1339
870	if (loop_done != 2)	1340	if (expect_false (loop_done))
871	loop_done = 0;	1341	break;
		1342	}
		1343
		1344	if (loop_done == EVUNLOOP_ONE)
		1345	loop_done = EVUNLOOP_CANCEL;
872	}	1346	}
873		1347
874	void	1348	void
875	ev_unloop (EV_P_ int how)	1349	ev_unloop (EV_P_ int how)
876	{	1350	{
…		…
929	}	1403	}
930		1404
931	/*****************************************************************************/	1405	/*****************************************************************************/
932		1406
933	void	1407	void
934	ev_io_start (EV_P_ struct ev_io *w)	1408	ev_io_start (EV_P_ ev_io *w)
935	{	1409	{
936	int fd = w->fd;	1410	int fd = w->fd;
937		1411
938	if (ev_is_active (w))	1412	if (expect_false (ev_is_active (w)))
939	return;	1413	return;
940		1414
941	assert (("ev_io_start called with negative fd", fd >= 0));	1415	assert (("ev_io_start called with negative fd", fd >= 0));
942		1416
943	ev_start (EV_A_ (W)w, 1);	1417	ev_start (EV_A_ (W)w, 1);
944	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1418	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
945	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1419	wlist_add ((WL *)&anfds[fd].head, (WL)w);
946		1420
947	fd_change (EV_A_ fd);	1421	fd_change (EV_A_ fd);
948	}	1422	}
949		1423
950	void	1424	void
951	ev_io_stop (EV_P_ struct ev_io *w)	1425	ev_io_stop (EV_P_ ev_io *w)
952	{	1426	{
953	ev_clear_pending (EV_A_ (W)w);	1427	ev_clear_pending (EV_A_ (W)w);
954	if (!ev_is_active (w))	1428	if (expect_false (!ev_is_active (w)))
955	return;	1429	return;
		1430
		1431	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
956		1432
957	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1433	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
958	ev_stop (EV_A_ (W)w);	1434	ev_stop (EV_A_ (W)w);
959		1435
960	fd_change (EV_A_ w->fd);	1436	fd_change (EV_A_ w->fd);
961	}	1437	}
962		1438
963	void	1439	void
964	ev_timer_start (EV_P_ struct ev_timer *w)	1440	ev_timer_start (EV_P_ ev_timer *w)
965	{	1441	{
966	if (ev_is_active (w))	1442	if (expect_false (ev_is_active (w)))
967	return;	1443	return;
968		1444
969	w->at += mn_now;	1445	((WT)w)->at += mn_now;
970		1446
971	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1447	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
972		1448
973	ev_start (EV_A_ (W)w, ++timercnt);	1449	ev_start (EV_A_ (W)w, ++timercnt);
974	array_needsize (timers, timermax, timercnt, );	1450	array_needsize (ev_timer *, timers, timermax, timercnt, EMPTY2);
975	timers [timercnt - 1] = w;	1451	timers [timercnt - 1] = w;
976	upheap ((WT *)timers, timercnt - 1);	1452	upheap ((WT *)timers, timercnt - 1);
977	}
978		1453
		1454	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1455	}
		1456
979	void	1457	void
980	ev_timer_stop (EV_P_ struct ev_timer *w)	1458	ev_timer_stop (EV_P_ ev_timer *w)
981	{	1459	{
982	ev_clear_pending (EV_A_ (W)w);	1460	ev_clear_pending (EV_A_ (W)w);
983	if (!ev_is_active (w))	1461	if (expect_false (!ev_is_active (w)))
984	return;	1462	return;
985		1463
		1464	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1465
986	if (w->active < timercnt--)	1466	if (expect_true (((W)w)->active < timercnt--))
987	{	1467	{
988	timers [w->active - 1] = timers [timercnt];	1468	timers [((W)w)->active - 1] = timers [timercnt];
989	downheap ((WT *)timers, timercnt, w->active - 1);	1469	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
990	}	1470	}
991		1471
992	w->at = w->repeat;	1472	((WT)w)->at -= mn_now;
993		1473
994	ev_stop (EV_A_ (W)w);	1474	ev_stop (EV_A_ (W)w);
995	}	1475	}
996		1476
997	void	1477	void
998	ev_timer_again (EV_P_ struct ev_timer *w)	1478	ev_timer_again (EV_P_ ev_timer *w)
999	{	1479	{
1000	if (ev_is_active (w))	1480	if (ev_is_active (w))
1001	{	1481	{
1002	if (w->repeat)	1482	if (w->repeat)
1003	{	1483	{
1004	w->at = mn_now + w->repeat;	1484	((WT)w)->at = mn_now + w->repeat;
1005	downheap ((WT *)timers, timercnt, w->active - 1);	1485	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1006	}	1486	}
1007	else	1487	else
1008	ev_timer_stop (EV_A_ w);	1488	ev_timer_stop (EV_A_ w);
1009	}	1489	}
1010	else if (w->repeat)	1490	else if (w->repeat)
		1491	{
		1492	w->at = w->repeat;
1011	ev_timer_start (EV_A_ w);	1493	ev_timer_start (EV_A_ w);
		1494	}
1012	}	1495	}
1013		1496
		1497	#if EV_PERIODICS
1014	void	1498	void
1015	ev_periodic_start (EV_P_ struct ev_periodic *w)	1499	ev_periodic_start (EV_P_ ev_periodic *w)
1016	{	1500	{
1017	if (ev_is_active (w))	1501	if (expect_false (ev_is_active (w)))
1018	return;	1502	return;
1019		1503
		1504	if (w->reschedule_cb)
		1505	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1506	else if (w->interval)
		1507	{
1020	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1508	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1021
1022	/* this formula differs from the one in periodic_reify because we do not always round up */	1509	/* this formula differs from the one in periodic_reify because we do not always round up */
1023	if (w->interval)
1024	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1510	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1511	}
1025		1512
1026	ev_start (EV_A_ (W)w, ++periodiccnt);	1513	ev_start (EV_A_ (W)w, ++periodiccnt);
1027	array_needsize (periodics, periodicmax, periodiccnt, );	1514	array_needsize (ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1028	periodics [periodiccnt - 1] = w;	1515	periodics [periodiccnt - 1] = w;
1029	upheap ((WT *)periodics, periodiccnt - 1);	1516	upheap ((WT *)periodics, periodiccnt - 1);
1030	}
1031		1517
		1518	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1519	}
		1520
1032	void	1521	void
1033	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1522	ev_periodic_stop (EV_P_ ev_periodic *w)
1034	{	1523	{
1035	ev_clear_pending (EV_A_ (W)w);	1524	ev_clear_pending (EV_A_ (W)w);
1036	if (!ev_is_active (w))	1525	if (expect_false (!ev_is_active (w)))
1037	return;	1526	return;
1038		1527
		1528	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1529
1039	if (w->active < periodiccnt--)	1530	if (expect_true (((W)w)->active < periodiccnt--))
1040	{	1531	{
1041	periodics [w->active - 1] = periodics [periodiccnt];	1532	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1042	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1533	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
		1534	}
		1535
		1536	ev_stop (EV_A_ (W)w);
		1537	}
		1538
		1539	void
		1540	ev_periodic_again (EV_P_ ev_periodic *w)
		1541	{
		1542	/* TODO: use adjustheap and recalculation */
		1543	ev_periodic_stop (EV_A_ w);
		1544	ev_periodic_start (EV_A_ w);
		1545	}
		1546	#endif
		1547
		1548	void
		1549	ev_idle_start (EV_P_ ev_idle *w)
		1550	{
		1551	if (expect_false (ev_is_active (w)))
		1552	return;
		1553
		1554	ev_start (EV_A_ (W)w, ++idlecnt);
		1555	array_needsize (ev_idle *, idles, idlemax, idlecnt, EMPTY2);
		1556	idles [idlecnt - 1] = w;
		1557	}
		1558
		1559	void
		1560	ev_idle_stop (EV_P_ ev_idle *w)
		1561	{
		1562	ev_clear_pending (EV_A_ (W)w);
		1563	if (expect_false (!ev_is_active (w)))
		1564	return;
		1565
		1566	{
		1567	int active = ((W)w)->active;
		1568	idles [active - 1] = idles [--idlecnt];
		1569	((W)idles [active - 1])->active = active;
1043	}	1570	}
		1571
		1572	ev_stop (EV_A_ (W)w);
		1573	}
		1574
		1575	void
		1576	ev_prepare_start (EV_P_ ev_prepare *w)
		1577	{
		1578	if (expect_false (ev_is_active (w)))
		1579	return;
		1580
		1581	ev_start (EV_A_ (W)w, ++preparecnt);
		1582	array_needsize (ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
		1583	prepares [preparecnt - 1] = w;
		1584	}
		1585
		1586	void
		1587	ev_prepare_stop (EV_P_ ev_prepare *w)
		1588	{
		1589	ev_clear_pending (EV_A_ (W)w);
		1590	if (expect_false (!ev_is_active (w)))
		1591	return;
		1592
		1593	{
		1594	int active = ((W)w)->active;
		1595	prepares [active - 1] = prepares [--preparecnt];
		1596	((W)prepares [active - 1])->active = active;
		1597	}
		1598
		1599	ev_stop (EV_A_ (W)w);
		1600	}
		1601
		1602	void
		1603	ev_check_start (EV_P_ ev_check *w)
		1604	{
		1605	if (expect_false (ev_is_active (w)))
		1606	return;
		1607
		1608	ev_start (EV_A_ (W)w, ++checkcnt);
		1609	array_needsize (ev_check *, checks, checkmax, checkcnt, EMPTY2);
		1610	checks [checkcnt - 1] = w;
		1611	}
		1612
		1613	void
		1614	ev_check_stop (EV_P_ ev_check *w)
		1615	{
		1616	ev_clear_pending (EV_A_ (W)w);
		1617	if (expect_false (!ev_is_active (w)))
		1618	return;
		1619
		1620	{
		1621	int active = ((W)w)->active;
		1622	checks [active - 1] = checks [--checkcnt];
		1623	((W)checks [active - 1])->active = active;
		1624	}
1044		1625
1045	ev_stop (EV_A_ (W)w);	1626	ev_stop (EV_A_ (W)w);
1046	}	1627	}
1047		1628
1048	#ifndef SA_RESTART	1629	#ifndef SA_RESTART
1049	# define SA_RESTART 0	1630	# define SA_RESTART 0
1050	#endif	1631	#endif
1051		1632
1052	void	1633	void
1053	ev_signal_start (EV_P_ struct ev_signal *w)	1634	ev_signal_start (EV_P_ ev_signal *w)
1054	{	1635	{
		1636	#if EV_MULTIPLICITY
		1637	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1638	#endif
1055	if (ev_is_active (w))	1639	if (expect_false (ev_is_active (w)))
1056	return;	1640	return;
1057		1641
1058	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1642	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1059		1643
1060	ev_start (EV_A_ (W)w, 1);	1644	ev_start (EV_A_ (W)w, 1);
1061	array_needsize (signals, signalmax, w->signum, signals_init);	1645	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1062	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1646	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1063		1647
1064	if (!w->next)	1648	if (!((WL)w)->next)
1065	{	1649	{
		1650	#if _WIN32
		1651	signal (w->signum, sighandler);
		1652	#else
1066	struct sigaction sa;	1653	struct sigaction sa;
1067	sa.sa_handler = sighandler;	1654	sa.sa_handler = sighandler;
1068	sigfillset (&sa.sa_mask);	1655	sigfillset (&sa.sa_mask);
1069	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1656	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1070	sigaction (w->signum, &sa, 0);	1657	sigaction (w->signum, &sa, 0);
		1658	#endif
1071	}	1659	}
1072	}	1660	}
1073		1661
1074	void	1662	void
1075	ev_signal_stop (EV_P_ struct ev_signal *w)	1663	ev_signal_stop (EV_P_ ev_signal *w)
1076	{	1664	{
1077	ev_clear_pending (EV_A_ (W)w);	1665	ev_clear_pending (EV_A_ (W)w);
1078	if (!ev_is_active (w))	1666	if (expect_false (!ev_is_active (w)))
1079	return;	1667	return;
1080		1668
1081	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1669	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1082	ev_stop (EV_A_ (W)w);	1670	ev_stop (EV_A_ (W)w);
1083		1671
1084	if (!signals [w->signum - 1].head)	1672	if (!signals [w->signum - 1].head)
1085	signal (w->signum, SIG_DFL);	1673	signal (w->signum, SIG_DFL);
1086	}	1674	}
1087		1675
1088	void	1676	void
1089	ev_idle_start (EV_P_ struct ev_idle *w)
1090	{
1091	if (ev_is_active (w))
1092	return;
1093
1094	ev_start (EV_A_ (W)w, ++idlecnt);
1095	array_needsize (idles, idlemax, idlecnt, );
1096	idles [idlecnt - 1] = w;
1097	}
1098
1099	void
1100	ev_idle_stop (EV_P_ struct ev_idle *w)
1101	{
1102	ev_clear_pending (EV_A_ (W)w);
1103	if (ev_is_active (w))
1104	return;
1105
1106	idles [w->active - 1] = idles [--idlecnt];
1107	ev_stop (EV_A_ (W)w);
1108	}
1109
1110	void
1111	ev_prepare_start (EV_P_ struct ev_prepare *w)
1112	{
1113	if (ev_is_active (w))
1114	return;
1115
1116	ev_start (EV_A_ (W)w, ++preparecnt);
1117	array_needsize (prepares, preparemax, preparecnt, );
1118	prepares [preparecnt - 1] = w;
1119	}
1120
1121	void
1122	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1123	{
1124	ev_clear_pending (EV_A_ (W)w);
1125	if (ev_is_active (w))
1126	return;
1127
1128	prepares [w->active - 1] = prepares [--preparecnt];
1129	ev_stop (EV_A_ (W)w);
1130	}
1131
1132	void
1133	ev_check_start (EV_P_ struct ev_check *w)
1134	{
1135	if (ev_is_active (w))
1136	return;
1137
1138	ev_start (EV_A_ (W)w, ++checkcnt);
1139	array_needsize (checks, checkmax, checkcnt, );
1140	checks [checkcnt - 1] = w;
1141	}
1142
1143	void
1144	ev_check_stop (EV_P_ struct ev_check *w)
1145	{
1146	ev_clear_pending (EV_A_ (W)w);
1147	if (ev_is_active (w))
1148	return;
1149
1150	checks [w->active - 1] = checks [--checkcnt];
1151	ev_stop (EV_A_ (W)w);
1152	}
1153
1154	void
1155	ev_child_start (EV_P_ struct ev_child *w)	1677	ev_child_start (EV_P_ ev_child *w)
1156	{	1678	{
		1679	#if EV_MULTIPLICITY
		1680	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
		1681	#endif
1157	if (ev_is_active (w))	1682	if (expect_false (ev_is_active (w)))
1158	return;	1683	return;
1159		1684
1160	ev_start (EV_A_ (W)w, 1);	1685	ev_start (EV_A_ (W)w, 1);
1161	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1686	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1162	}	1687	}
1163		1688
1164	void	1689	void
1165	ev_child_stop (EV_P_ struct ev_child *w)	1690	ev_child_stop (EV_P_ ev_child *w)
1166	{	1691	{
1167	ev_clear_pending (EV_A_ (W)w);	1692	ev_clear_pending (EV_A_ (W)w);
1168	if (ev_is_active (w))	1693	if (expect_false (!ev_is_active (w)))
1169	return;	1694	return;
1170		1695
1171	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1696	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1172	ev_stop (EV_A_ (W)w);	1697	ev_stop (EV_A_ (W)w);
1173	}	1698	}
1174		1699
		1700	#if EV_MULTIPLICITY
		1701	void
		1702	ev_embed_sweep (EV_P_ ev_embed *w)
		1703	{
		1704	ev_loop (w->loop, EVLOOP_NONBLOCK);
		1705	}
		1706
		1707	static void
		1708	embed_cb (EV_P_ ev_io *io, int revents)
		1709	{
		1710	ev_embed *w = (ev_embed *)(((char *)io) - offsetof (ev_embed, io));
		1711
		1712	if (ev_cb (w))
		1713	ev_feed_event (EV_A_ (W)w, EV_EMBED);
		1714	else
		1715	ev_embed_sweep (loop, w);
		1716	}
		1717
		1718	void
		1719	ev_embed_start (EV_P_ ev_embed *w)
		1720	{
		1721	if (expect_false (ev_is_active (w)))
		1722	return;
		1723
		1724	{
		1725	struct ev_loop *loop = w->loop;
		1726	assert (("loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
		1727	ev_io_init (&w->io, embed_cb, backend_fd, EV_READ);
		1728	}
		1729
		1730	ev_set_priority (&w->io, ev_priority (w));
		1731	ev_io_start (EV_A_ &w->io);
		1732	ev_start (EV_A_ (W)w, 1);
		1733	}
		1734
		1735	void
		1736	ev_embed_stop (EV_P_ ev_embed *w)
		1737	{
		1738	ev_clear_pending (EV_A_ (W)w);
		1739	if (expect_false (!ev_is_active (w)))
		1740	return;
		1741
		1742	ev_io_stop (EV_A_ &w->io);
		1743	ev_stop (EV_A_ (W)w);
		1744	}
		1745	#endif
		1746
1175	/*****************************************************************************/	1747	/*****************************************************************************/
1176		1748
1177	struct ev_once	1749	struct ev_once
1178	{	1750	{
1179	struct ev_io io;	1751	ev_io io;
1180	struct ev_timer to;	1752	ev_timer to;
1181	void (*cb)(int revents, void *arg);	1753	void (*cb)(int revents, void *arg);
1182	void *arg;	1754	void *arg;
1183	};	1755	};
1184		1756
1185	static void	1757	static void
…		…
1188	void (*cb)(int revents, void *arg) = once->cb;	1760	void (*cb)(int revents, void *arg) = once->cb;
1189	void *arg = once->arg;	1761	void *arg = once->arg;
1190		1762
1191	ev_io_stop (EV_A_ &once->io);	1763	ev_io_stop (EV_A_ &once->io);
1192	ev_timer_stop (EV_A_ &once->to);	1764	ev_timer_stop (EV_A_ &once->to);
1193	free (once);	1765	ev_free (once);
1194		1766
1195	cb (revents, arg);	1767	cb (revents, arg);
1196	}	1768	}
1197		1769
1198	static void	1770	static void
1199	once_cb_io (EV_P_ struct ev_io *w, int revents)	1771	once_cb_io (EV_P_ ev_io *w, int revents)
1200	{	1772	{
1201	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1773	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1202	}	1774	}
1203		1775
1204	static void	1776	static void
1205	once_cb_to (EV_P_ struct ev_timer *w, int revents)	1777	once_cb_to (EV_P_ ev_timer *w, int revents)
1206	{	1778	{
1207	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1779	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1208	}	1780	}
1209		1781
1210	void	1782	void
1211	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1783	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1212	{	1784	{
1213	struct ev_once *once = malloc (sizeof (struct ev_once));	1785	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1214		1786
1215	if (!once)	1787	if (expect_false (!once))
		1788	{
1216	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1789	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1217	else	1790	return;
1218	{	1791	}
		1792
1219	once->cb = cb;	1793	once->cb = cb;
1220	once->arg = arg;	1794	once->arg = arg;
1221		1795
1222	ev_watcher_init (&once->io, once_cb_io);	1796	ev_init (&once->io, once_cb_io);
1223	if (fd >= 0)	1797	if (fd >= 0)
1224	{	1798	{
1225	ev_io_set (&once->io, fd, events);	1799	ev_io_set (&once->io, fd, events);
1226	ev_io_start (EV_A_ &once->io);	1800	ev_io_start (EV_A_ &once->io);
1227	}	1801	}
1228		1802
1229	ev_watcher_init (&once->to, once_cb_to);	1803	ev_init (&once->to, once_cb_to);
1230	if (timeout >= 0.)	1804	if (timeout >= 0.)
1231	{	1805	{
1232	ev_timer_set (&once->to, timeout, 0.);	1806	ev_timer_set (&once->to, timeout, 0.);
1233	ev_timer_start (EV_A_ &once->to);	1807	ev_timer_start (EV_A_ &once->to);
1234	}
1235	}
1236	}
1237
1238	/*****************************************************************************/
1239
1240	#if 0
1241
1242	struct ev_io wio;
1243
1244	static void
1245	sin_cb (struct ev_io *w, int revents)
1246	{
1247	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1248	}
1249
1250	static void
1251	ocb (struct ev_timer *w, int revents)
1252	{
1253	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1254	ev_timer_stop (w);
1255	ev_timer_start (w);
1256	}
1257
1258	static void
1259	scb (struct ev_signal *w, int revents)
1260	{
1261	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1262	ev_io_stop (&wio);
1263	ev_io_start (&wio);
1264	}
1265
1266	static void
1267	gcb (struct ev_signal *w, int revents)
1268	{
1269	fprintf (stderr, "generic %x\n", revents);
1270
1271	}
1272
1273	int main (void)
1274	{
1275	ev_init (0);
1276
1277	ev_io_init (&wio, sin_cb, 0, EV_READ);
1278	ev_io_start (&wio);
1279
1280	struct ev_timer t[10000];
1281
1282	#if 0
1283	int i;
1284	for (i = 0; i < 10000; ++i)
1285	{	1808	}
1286	struct ev_timer *w = t + i;
1287	ev_watcher_init (w, ocb, i);
1288	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1289	ev_timer_start (w);
1290	if (drand48 () < 0.5)
1291	ev_timer_stop (w);
1292	}
1293	#endif
1294
1295	struct ev_timer t1;
1296	ev_timer_init (&t1, ocb, 5, 10);
1297	ev_timer_start (&t1);
1298
1299	struct ev_signal sig;
1300	ev_signal_init (&sig, scb, SIGQUIT);
1301	ev_signal_start (&sig);
1302
1303	struct ev_check cw;
1304	ev_check_init (&cw, gcb);
1305	ev_check_start (&cw);
1306
1307	struct ev_idle iw;
1308	ev_idle_init (&iw, gcb);
1309	ev_idle_start (&iw);
1310
1311	ev_loop (0);
1312
1313	return 0;
1314	}	1809	}
1315		1810
		1811	#ifdef __cplusplus
		1812	}
1316	#endif	1813	#endif
1317		1814
1318
1319
1320

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