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Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC

…		…
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	#ifndef EV_STANDALONE	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
70		92
71	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	94	# define EV_USE_KQUEUE 0
73	#endif	95	#endif
74		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
		103	#endif
		104
75	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
77	#endif	107	#endif
78		108
79	/**/	109	/**/
…		…
113		143
114	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
117		147
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121
122	static int have_monotonic; /* runtime */
123
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		149
128	/*****************************************************************************/	150	/*****************************************************************************/
129		151
130	ev_tstamp	152	typedef struct
		153	{
		154	struct ev_watcher_list *head;
		155	unsigned char events;
		156	unsigned char reify;
		157	} ANFD;
		158
		159	typedef struct
		160	{
		161	W w;
		162	int events;
		163	} ANPENDING;
		164
		165	#if EV_MULTIPLICITY
		166
		167	struct ev_loop
		168	{
		169	# define VAR(name,decl) decl;
		170	# include "ev_vars.h"
		171	};
		172	# undef VAR
		173	# include "ev_wrap.h"
		174
		175	#else
		176
		177	# define VAR(name,decl) static decl;
		178	# include "ev_vars.h"
		179	# undef VAR
		180
		181	#endif
		182
		183	/*****************************************************************************/
		184
		185	inline ev_tstamp
131	ev_time (void)	186	ev_time (void)
132	{	187	{
133	#if EV_USE_REALTIME	188	#if EV_USE_REALTIME
134	struct timespec ts;	189	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	190	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	194	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	195	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	196	#endif
142	}	197	}
143		198
144	static ev_tstamp	199	inline ev_tstamp
145	get_clock (void)	200	get_clock (void)
146	{	201	{
147	#if EV_USE_MONOTONIC	202	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	203	if (expect_true (have_monotonic))
149	{	204	{
…		…
152	return ts.tv_sec + ts.tv_nsec * 1e-9;	207	return ts.tv_sec + ts.tv_nsec * 1e-9;
153	}	208	}
154	#endif	209	#endif
155		210
156	return ev_time ();	211	return ev_time ();
		212	}
		213
		214	ev_tstamp
		215	ev_now (EV_P)
		216	{
		217	return rt_now;
157	}	218	}
158		219
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	220	#define array_roundsize(base,n) ((n) | 4 & ~3)
160		221
161	#define array_needsize(base,cur,cnt,init) \	222	#define array_needsize(base,cur,cnt,init) \
…		…
171	base = realloc (base, sizeof (*base) * (newcnt)); \	232	base = realloc (base, sizeof (*base) * (newcnt)); \
172	init (base + cur, newcnt - cur); \	233	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	234	cur = newcnt; \
174	}	235	}
175		236
		237	#define array_free(stem, idx) \
		238	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		239
176	/*****************************************************************************/	240	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_watcher_list *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		241
188	static void	242	static void
189	anfds_init (ANFD *base, int count)	243	anfds_init (ANFD *base, int count)
190	{	244	{
191	while (count--)	245	while (count--)
…		…
196		250
197	++base;	251	++base;
198	}	252	}
199	}	253	}
200		254
201	typedef struct
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void	255	static void
211	event (W w, int events)	256	event (EV_P_ W w, int events)
212	{	257	{
213	if (w->pending)	258	if (w->pending)
214	{	259	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	260	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;	261	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	266	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	267	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	268	}
224		269
225	static void	270	static void
226	queue_events (W *events, int eventcnt, int type)	271	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	272	{
228	int i;	273	int i;
229		274
230	for (i = 0; i < eventcnt; ++i)	275	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	276	event (EV_A_ events [i], type);
232	}	277	}
233		278
234	static void	279	static void
235	fd_event (int fd, int events)	280	fd_event (EV_P_ int fd, int events)
236	{	281	{
237	ANFD *anfd = anfds + fd;	282	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	283	struct ev_io *w;
239		284
240	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	285	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	286	{
242	int ev = w->events & events;	287	int ev = w->events & events;
243		288
244	if (ev)	289	if (ev)
245	event ((W)w, ev);	290	event (EV_A_ (W)w, ev);
246	}	291	}
247	}	292	}
248		293
249	/*****************************************************************************/	294	/*****************************************************************************/
250		295
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	296	static void
255	fd_reify (void)	297	fd_reify (EV_P)
256	{	298	{
257	int i;	299	int i;
258		300
259	for (i = 0; i < fdchangecnt; ++i)	301	for (i = 0; i < fdchangecnt; ++i)
260	{	302	{
…		…
267	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	309	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	310	events |= w->events;
269		311
270	anfd->reify = 0;	312	anfd->reify = 0;
271		313
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	314	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	315	anfd->events = events;
276	}
277	}	316	}
278		317
279	fdchangecnt = 0;	318	fdchangecnt = 0;
280	}	319	}
281		320
282	static void	321	static void
283	fd_change (int fd)	322	fd_change (EV_P_ int fd)
284	{	323	{
285	if (anfds [fd].reify || fdchangecnt < 0)	324	if (anfds [fd].reify || fdchangecnt < 0)
286	return;	325	return;
287		326
288	anfds [fd].reify = 1;	327	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	331	fdchanges [fdchangecnt - 1] = fd;
293	}	332	}
294		333
295	static void	334	static void
296	fd_kill (int fd)	335	fd_kill (EV_P_ int fd)
297	{	336	{
298	struct ev_io *w;	337	struct ev_io *w;
299		338
300	while ((w = (struct ev_io *)anfds [fd].head))	339	while ((w = (struct ev_io *)anfds [fd].head))
301	{	340	{
302	ev_io_stop (w);	341	ev_io_stop (EV_A_ w);
303	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	342	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
304	}	343	}
305	}	344	}
306		345
307	/* called on EBADF to verify fds */	346	/* called on EBADF to verify fds */
308	static void	347	static void
309	fd_ebadf (void)	348	fd_ebadf (EV_P)
310	{	349	{
311	int fd;	350	int fd;
312		351
313	for (fd = 0; fd < anfdmax; ++fd)	352	for (fd = 0; fd < anfdmax; ++fd)
314	if (anfds [fd].events)	353	if (anfds [fd].events)
315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
316	fd_kill (fd);	355	fd_kill (EV_A_ fd);
317	}	356	}
318		357
319	/* called on ENOMEM in select/poll to kill some fds and retry */	358	/* called on ENOMEM in select/poll to kill some fds and retry */
320	static void	359	static void
321	fd_enomem (void)	360	fd_enomem (EV_P)
322	{	361	{
323	int fd = anfdmax;	362	int fd;
324		363
325	while (fd--)	364	for (fd = anfdmax; fd--; )
326	if (anfds [fd].events)	365	if (anfds [fd].events)
327	{	366	{
328	close (fd);	367	close (fd);
329	fd_kill (fd);	368	fd_kill (EV_A_ fd);
330	return;	369	return;
331	}	370	}
332	}	371	}
333		372
		373	/* susually called after fork if method needs to re-arm all fds from scratch */
		374	static void
		375	fd_rearm_all (EV_P)
		376	{
		377	int fd;
		378
		379	/* this should be highly optimised to not do anything but set a flag */
		380	for (fd = 0; fd < anfdmax; ++fd)
		381	if (anfds [fd].events)
		382	{
		383	anfds [fd].events = 0;
		384	fd_change (EV_A_ fd);
		385	}
		386	}
		387
334	/*****************************************************************************/	388	/*****************************************************************************/
335		389
336	static struct ev_timer **timers;
337	static int timermax, timercnt;
338
339	static struct ev_periodic **periodics;
340	static int periodicmax, periodiccnt;
341
342	static void	390	static void
343	upheap (WT *timers, int k)	391	upheap (WT *heap, int k)
344	{	392	{
345	WT w = timers [k];	393	WT w = heap [k];
346		394
347	while (k && timers [k >> 1]->at > w->at)	395	while (k && heap [k >> 1]->at > w->at)
348	{	396	{
349	timers [k] = timers [k >> 1];	397	heap [k] = heap [k >> 1];
350	timers [k]->active = k + 1;	398	((W)heap [k])->active = k + 1;
351	k >>= 1;	399	k >>= 1;
352	}	400	}
353		401
354	timers [k] = w;	402	heap [k] = w;
355	timers [k]->active = k + 1;	403	((W)heap [k])->active = k + 1;
356		404
357	}	405	}
358		406
359	static void	407	static void
360	downheap (WT *timers, int N, int k)	408	downheap (WT *heap, int N, int k)
361	{	409	{
362	WT w = timers [k];	410	WT w = heap [k];
363		411
364	while (k < (N >> 1))	412	while (k < (N >> 1))
365	{	413	{
366	int j = k << 1;	414	int j = k << 1;
367		415
368	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	416	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369	++j;	417	++j;
370		418
371	if (w->at <= timers [j]->at)	419	if (w->at <= heap [j]->at)
372	break;	420	break;
373		421
374	timers [k] = timers [j];	422	heap [k] = heap [j];
375	timers [k]->active = k + 1;	423	((W)heap [k])->active = k + 1;
376	k = j;	424	k = j;
377	}	425	}
378		426
379	timers [k] = w;	427	heap [k] = w;
380	timers [k]->active = k + 1;	428	((W)heap [k])->active = k + 1;
381	}	429	}
382		430
383	/*****************************************************************************/	431	/*****************************************************************************/
384		432
385	typedef struct	433	typedef struct
…		…
420	errno = old_errno;	468	errno = old_errno;
421	}	469	}
422	}	470	}
423		471
424	static void	472	static void
425	sigcb (struct ev_io *iow, int revents)	473	sigcb (EV_P_ struct ev_io *iow, int revents)
426	{	474	{
427	struct ev_watcher_list *w;	475	struct ev_watcher_list *w;
428	int signum;	476	int signum;
429		477
430	read (sigpipe [0], &revents, 1);	478	read (sigpipe [0], &revents, 1);
…		…
434	if (signals [signum].gotsig)	482	if (signals [signum].gotsig)
435	{	483	{
436	signals [signum].gotsig = 0;	484	signals [signum].gotsig = 0;
437		485
438	for (w = signals [signum].head; w; w = w->next)	486	for (w = signals [signum].head; w; w = w->next)
439	event ((W)w, EV_SIGNAL);	487	event (EV_A_ (W)w, EV_SIGNAL);
440	}	488	}
441	}	489	}
442		490
443	static void	491	static void
444	siginit (void)	492	siginit (EV_P)
445	{	493	{
446	#ifndef WIN32	494	#ifndef WIN32
447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449		497
…		…
451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453	#endif	501	#endif
454		502
455	ev_io_set (&sigev, sigpipe [0], EV_READ);	503	ev_io_set (&sigev, sigpipe [0], EV_READ);
456	ev_io_start (&sigev);	504	ev_io_start (EV_A_ &sigev);
		505	ev_unref (EV_A); /* child watcher should not keep loop alive */
457	}	506	}
458		507
459	/*****************************************************************************/	508	/*****************************************************************************/
460		509
461	static struct ev_idle **idles;	510	#ifndef WIN32
462	static int idlemax, idlecnt;
463
464	static struct ev_prepare **prepares;
465	static int preparemax, preparecnt;
466
467	static struct ev_check **checks;
468	static int checkmax, checkcnt;
469
470	/*****************************************************************************/
471		511
472	static struct ev_child *childs [PID_HASHSIZE];	512	static struct ev_child *childs [PID_HASHSIZE];
473	static struct ev_signal childev;	513	static struct ev_signal childev;
474		514
475	#ifndef WIN32
476
477	#ifndef WCONTINUED	515	#ifndef WCONTINUED
478	# define WCONTINUED 0	516	# define WCONTINUED 0
479	#endif	517	#endif
480		518
481	static void	519	static void
482	child_reap (struct ev_signal *sw, int chain, int pid, int status)	520	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
483	{	521	{
484	struct ev_child *w;	522	struct ev_child *w;
485		523
486	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	524	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
487	if (w->pid == pid || !w->pid)	525	if (w->pid == pid || !w->pid)
488	{	526	{
489	w->priority = sw->priority; /* need to do it *now* */	527	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
490	w->rpid = pid;	528	w->rpid = pid;
491	w->rstatus = status;	529	w->rstatus = status;
492	event ((W)w, EV_CHILD);	530	event (EV_A_ (W)w, EV_CHILD);
493	}	531	}
494	}	532	}
495		533
496	static void	534	static void
497	childcb (struct ev_signal *sw, int revents)	535	childcb (EV_P_ struct ev_signal *sw, int revents)
498	{	536	{
499	int pid, status;	537	int pid, status;
500		538
501	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
502	{	540	{
503	/* make sure we are called again until all childs have been reaped */	541	/* make sure we are called again until all childs have been reaped */
504	event ((W)sw, EV_SIGNAL);	542	event (EV_A_ (W)sw, EV_SIGNAL);
505		543
506	child_reap (sw, pid, pid, status);	544	child_reap (EV_A_ sw, pid, pid, status);
507	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	545	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
508	}	546	}
509	}	547	}
510		548
511	#endif	549	#endif
512		550
…		…
537	return EV_VERSION_MINOR;	575	return EV_VERSION_MINOR;
538	}	576	}
539		577
540	/* return true if we are running with elevated privileges and should ignore env variables */	578	/* return true if we are running with elevated privileges and should ignore env variables */
541	static int	579	static int
542	enable_secure ()	580	enable_secure (void)
543	{	581	{
544	#ifdef WIN32	582	#ifdef WIN32
545	return 0;	583	return 0;
546	#else	584	#else
547	return getuid () != geteuid ()	585	return getuid () != geteuid ()
548	|| getgid () != getegid ();	586	|| getgid () != getegid ();
549	#endif	587	#endif
550	}	588	}
551		589
552	int ev_init (int methods)	590	int
		591	ev_method (EV_P)
553	{	592	{
		593	return method;
		594	}
		595
		596	static void
		597	loop_init (EV_P_ int methods)
		598	{
554	if (!ev_method)	599	if (!method)
555	{	600	{
556	#if EV_USE_MONOTONIC	601	#if EV_USE_MONOTONIC
557	{	602	{
558	struct timespec ts;	603	struct timespec ts;
559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560	have_monotonic = 1;	605	have_monotonic = 1;
561	}	606	}
562	#endif	607	#endif
563		608
564	ev_now = ev_time ();	609	rt_now = ev_time ();
565	now = get_clock ();	610	mn_now = get_clock ();
566	now_floor = now;	611	now_floor = mn_now;
567	diff = ev_now - now;	612	rtmn_diff = rt_now - mn_now;
568
569	if (pipe (sigpipe))
570	return 0;
571		613
572	if (methods == EVMETHOD_AUTO)	614	if (methods == EVMETHOD_AUTO)
573	if (!enable_secure () && getenv ("LIBEV_METHODS"))	615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
574	methods = atoi (getenv ("LIBEV_METHODS"));	616	methods = atoi (getenv ("LIBEV_METHODS"));
575	else	617	else
576	methods = EVMETHOD_ANY;	618	methods = EVMETHOD_ANY;
577		619
578	ev_method = 0;	620	method = 0;
		621	#if EV_USE_WIN32
		622	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		623	#endif
579	#if EV_USE_KQUEUE	624	#if EV_USE_KQUEUE
580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
581	#endif	626	#endif
582	#if EV_USE_EPOLL	627	#if EV_USE_EPOLL
583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
584	#endif	629	#endif
585	#if EV_USE_POLL	630	#if EV_USE_POLL
586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
587	#endif	632	#endif
588	#if EV_USE_SELECT	633	#if EV_USE_SELECT
589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
590	#endif	635	#endif
		636	}
		637	}
591		638
		639	void
		640	loop_destroy (EV_P)
		641	{
		642	int i;
		643
		644	#if EV_USE_WIN32
		645	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		646	#endif
		647	#if EV_USE_KQUEUE
		648	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		649	#endif
		650	#if EV_USE_EPOLL
		651	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		652	#endif
		653	#if EV_USE_POLL
		654	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		655	#endif
		656	#if EV_USE_SELECT
		657	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		658	#endif
		659
		660	for (i = NUMPRI; i--; )
		661	array_free (pending, [i]);
		662
		663	array_free (fdchange, );
		664	array_free (timer, );
		665	array_free (periodic, );
		666	array_free (idle, );
		667	array_free (prepare, );
		668	array_free (check, );
		669
		670	method = 0;
		671	/*TODO*/
		672	}
		673
		674	void
		675	loop_fork (EV_P)
		676	{
		677	/*TODO*/
		678	#if EV_USE_EPOLL
		679	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		680	#endif
		681	#if EV_USE_KQUEUE
		682	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		683	#endif
		684	}
		685
		686	#if EV_MULTIPLICITY
		687	struct ev_loop *
		688	ev_loop_new (int methods)
		689	{
		690	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		691
		692	loop_init (EV_A_ methods);
		693
		694	if (ev_method (EV_A))
		695	return loop;
		696
		697	return 0;
		698	}
		699
		700	void
		701	ev_loop_destroy (EV_P)
		702	{
		703	loop_destroy (EV_A);
		704	free (loop);
		705	}
		706
		707	void
		708	ev_loop_fork (EV_P)
		709	{
		710	loop_fork (EV_A);
		711	}
		712
		713	#endif
		714
		715	#if EV_MULTIPLICITY
		716	struct ev_loop default_loop_struct;
		717	static struct ev_loop *default_loop;
		718
		719	struct ev_loop *
		720	#else
		721	static int default_loop;
		722
		723	int
		724	#endif
		725	ev_default_loop (int methods)
		726	{
		727	if (sigpipe [0] == sigpipe [1])
		728	if (pipe (sigpipe))
		729	return 0;
		730
		731	if (!default_loop)
		732	{
		733	#if EV_MULTIPLICITY
		734	struct ev_loop *loop = default_loop = &default_loop_struct;
		735	#else
		736	default_loop = 1;
		737	#endif
		738
		739	loop_init (EV_A_ methods);
		740
592	if (ev_method)	741	if (ev_method (EV_A))
593	{	742	{
594	ev_watcher_init (&sigev, sigcb);	743	ev_watcher_init (&sigev, sigcb);
595	ev_set_priority (&sigev, EV_MAXPRI);	744	ev_set_priority (&sigev, EV_MAXPRI);
596	siginit ();	745	siginit (EV_A);
597		746
598	#ifndef WIN32	747	#ifndef WIN32
599	ev_signal_init (&childev, childcb, SIGCHLD);	748	ev_signal_init (&childev, childcb, SIGCHLD);
600	ev_set_priority (&childev, EV_MAXPRI);	749	ev_set_priority (&childev, EV_MAXPRI);
601	ev_signal_start (&childev);	750	ev_signal_start (EV_A_ &childev);
		751	ev_unref (EV_A); /* child watcher should not keep loop alive */
602	#endif	752	#endif
603	}	753	}
		754	else
		755	default_loop = 0;
604	}	756	}
605		757
606	return ev_method;	758	return default_loop;
607	}	759	}
608		760
609	/*****************************************************************************/
610
611	void	761	void
612	ev_fork_prepare (void)	762	ev_default_destroy (void)
613	{	763	{
614	/* nop */	764	#if EV_MULTIPLICITY
615	}	765	struct ev_loop *loop = default_loop;
616
617	void
618	ev_fork_parent (void)
619	{
620	/* nop */
621	}
622
623	void
624	ev_fork_child (void)
625	{
626	#if EV_USE_EPOLL
627	if (ev_method == EVMETHOD_EPOLL)
628	epoll_postfork_child ();
629	#endif	766	#endif
630		767
		768	ev_ref (EV_A); /* child watcher */
		769	ev_signal_stop (EV_A_ &childev);
		770
		771	ev_ref (EV_A); /* signal watcher */
631	ev_io_stop (&sigev);	772	ev_io_stop (EV_A_ &sigev);
		773
		774	close (sigpipe [0]); sigpipe [0] = 0;
		775	close (sigpipe [1]); sigpipe [1] = 0;
		776
		777	loop_destroy (EV_A);
		778	}
		779
		780	void
		781	ev_default_fork (void)
		782	{
		783	#if EV_MULTIPLICITY
		784	struct ev_loop *loop = default_loop;
		785	#endif
		786
		787	loop_fork (EV_A);
		788
		789	ev_io_stop (EV_A_ &sigev);
632	close (sigpipe [0]);	790	close (sigpipe [0]);
633	close (sigpipe [1]);	791	close (sigpipe [1]);
634	pipe (sigpipe);	792	pipe (sigpipe);
		793
		794	ev_ref (EV_A); /* signal watcher */
635	siginit ();	795	siginit (EV_A);
636	}	796	}
637		797
638	/*****************************************************************************/	798	/*****************************************************************************/
639		799
640	static void	800	static void
641	call_pending (void)	801	call_pending (EV_P)
642	{	802	{
643	int pri;	803	int pri;
644		804
645	for (pri = NUMPRI; pri--; )	805	for (pri = NUMPRI; pri--; )
646	while (pendingcnt [pri])	806	while (pendingcnt [pri])
…		…
648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649		809
650	if (p->w)	810	if (p->w)
651	{	811	{
652	p->w->pending = 0;	812	p->w->pending = 0;
653	p->w->cb (p->w, p->events);	813
		814	((void (*)(EV_P_ W, int))p->w->cb) (EV_A_ p->w, p->events);
654	}	815	}
655	}	816	}
656	}	817	}
657		818
658	static void	819	static void
659	timers_reify (void)	820	timers_reify (EV_P)
660	{	821	{
661	while (timercnt && timers [0]->at <= now)	822	while (timercnt && ((WT)timers [0])->at <= mn_now)
662	{	823	{
663	struct ev_timer *w = timers [0];	824	struct ev_timer *w = timers [0];
		825
		826	assert (("inactive timer on timer heap detected", ev_is_active (w)));
664		827
665	/* first reschedule or stop timer */	828	/* first reschedule or stop timer */
666	if (w->repeat)	829	if (w->repeat)
667	{	830	{
668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	831	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
669	w->at = now + w->repeat;	832	((WT)w)->at = mn_now + w->repeat;
670	downheap ((WT *)timers, timercnt, 0);	833	downheap ((WT *)timers, timercnt, 0);
671	}	834	}
672	else	835	else
673	ev_timer_stop (w); /* nonrepeating: stop timer */	836	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674		837
675	event ((W)w, EV_TIMEOUT);	838	event (EV_A_ (W)w, EV_TIMEOUT);
676	}	839	}
677	}	840	}
678		841
679	static void	842	static void
680	periodics_reify (void)	843	periodics_reify (EV_P)
681	{	844	{
682	while (periodiccnt && periodics [0]->at <= ev_now)	845	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
683	{	846	{
684	struct ev_periodic *w = periodics [0];	847	struct ev_periodic *w = periodics [0];
		848
		849	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
685		850
686	/* first reschedule or stop timer */	851	/* first reschedule or stop timer */
687	if (w->interval)	852	if (w->interval)
688	{	853	{
689	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	854	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
690	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	855	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
691	downheap ((WT *)periodics, periodiccnt, 0);	856	downheap ((WT *)periodics, periodiccnt, 0);
692	}	857	}
693	else	858	else
694	ev_periodic_stop (w); /* nonrepeating: stop timer */	859	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695		860
696	event ((W)w, EV_PERIODIC);	861	event (EV_A_ (W)w, EV_PERIODIC);
697	}	862	}
698	}	863	}
699		864
700	static void	865	static void
701	periodics_reschedule (ev_tstamp diff)	866	periodics_reschedule (EV_P)
702	{	867	{
703	int i;	868	int i;
704		869
705	/* adjust periodics after time jump */	870	/* adjust periodics after time jump */
706	for (i = 0; i < periodiccnt; ++i)	871	for (i = 0; i < periodiccnt; ++i)
707	{	872	{
708	struct ev_periodic *w = periodics [i];	873	struct ev_periodic *w = periodics [i];
709		874
710	if (w->interval)	875	if (w->interval)
711	{	876	{
712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	877	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
713		878
714	if (fabs (diff) >= 1e-4)	879	if (fabs (diff) >= 1e-4)
715	{	880	{
716	ev_periodic_stop (w);	881	ev_periodic_stop (EV_A_ w);
717	ev_periodic_start (w);	882	ev_periodic_start (EV_A_ w);
718		883
719	i = 0; /* restart loop, inefficient, but time jumps should be rare */	884	i = 0; /* restart loop, inefficient, but time jumps should be rare */
720	}	885	}
721	}	886	}
722	}	887	}
723	}	888	}
724		889
725	static int	890	inline int
726	time_update_monotonic (void)	891	time_update_monotonic (EV_P)
727	{	892	{
728	now = get_clock ();	893	mn_now = get_clock ();
729		894
730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	895	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731	{	896	{
732	ev_now = now + diff;	897	rt_now = rtmn_diff + mn_now;
733	return 0;	898	return 0;
734	}	899	}
735	else	900	else
736	{	901	{
737	now_floor = now;	902	now_floor = mn_now;
738	ev_now = ev_time ();	903	rt_now = ev_time ();
739	return 1;	904	return 1;
740	}	905	}
741	}	906	}
742		907
743	static void	908	static void
744	time_update (void)	909	time_update (EV_P)
745	{	910	{
746	int i;	911	int i;
747		912
748	#if EV_USE_MONOTONIC	913	#if EV_USE_MONOTONIC
749	if (expect_true (have_monotonic))	914	if (expect_true (have_monotonic))
750	{	915	{
751	if (time_update_monotonic ())	916	if (time_update_monotonic (EV_A))
752	{	917	{
753	ev_tstamp odiff = diff;	918	ev_tstamp odiff = rtmn_diff;
754		919
755	for (i = 4; --i; ) /* loop a few times, before making important decisions */	920	for (i = 4; --i; ) /* loop a few times, before making important decisions */
756	{	921	{
757	diff = ev_now - now;	922	rtmn_diff = rt_now - mn_now;
758		923
759	if (fabs (odiff - diff) < MIN_TIMEJUMP)	924	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760	return; /* all is well */	925	return; /* all is well */
761		926
762	ev_now = ev_time ();	927	rt_now = ev_time ();
763	now = get_clock ();	928	mn_now = get_clock ();
764	now_floor = now;	929	now_floor = mn_now;
765	}	930	}
766		931
767	periodics_reschedule (diff - odiff);	932	periodics_reschedule (EV_A);
768	/* no timer adjustment, as the monotonic clock doesn't jump */	933	/* no timer adjustment, as the monotonic clock doesn't jump */
		934	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769	}	935	}
770	}	936	}
771	else	937	else
772	#endif	938	#endif
773	{	939	{
774	ev_now = ev_time ();	940	rt_now = ev_time ();
775		941
776	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	942	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777	{	943	{
778	periodics_reschedule (ev_now - now);	944	periodics_reschedule (EV_A);
779		945
780	/* adjust timers. this is easy, as the offset is the same for all */	946	/* adjust timers. this is easy, as the offset is the same for all */
781	for (i = 0; i < timercnt; ++i)	947	for (i = 0; i < timercnt; ++i)
782	timers [i]->at += diff;	948	((WT)timers [i])->at += rt_now - mn_now;
783	}	949	}
784		950
785	now = ev_now;	951	mn_now = rt_now;
786	}	952	}
787	}	953	}
788		954
789	int ev_loop_done;	955	void
		956	ev_ref (EV_P)
		957	{
		958	++activecnt;
		959	}
790		960
		961	void
		962	ev_unref (EV_P)
		963	{
		964	--activecnt;
		965	}
		966
		967	static int loop_done;
		968
		969	void
791	void ev_loop (int flags)	970	ev_loop (EV_P_ int flags)
792	{	971	{
793	double block;	972	double block;
794	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	973	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
795		974
796	do	975	do
797	{	976	{
798	/* queue check watchers (and execute them) */	977	/* queue check watchers (and execute them) */
799	if (expect_false (preparecnt))	978	if (expect_false (preparecnt))
800	{	979	{
801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	980	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802	call_pending ();	981	call_pending (EV_A);
803	}	982	}
804		983
805	/* update fd-related kernel structures */	984	/* update fd-related kernel structures */
806	fd_reify ();	985	fd_reify (EV_A);
807		986
808	/* calculate blocking time */	987	/* calculate blocking time */
809		988
810	/* we only need this for !monotonic clockor timers, but as we basically	989	/* we only need this for !monotonic clockor timers, but as we basically
811	always have timers, we just calculate it always */	990	always have timers, we just calculate it always */
812	#if EV_USE_MONOTONIC	991	#if EV_USE_MONOTONIC
813	if (expect_true (have_monotonic))	992	if (expect_true (have_monotonic))
814	time_update_monotonic ();	993	time_update_monotonic (EV_A);
815	else	994	else
816	#endif	995	#endif
817	{	996	{
818	ev_now = ev_time ();	997	rt_now = ev_time ();
819	now = ev_now;	998	mn_now = rt_now;
820	}	999	}
821		1000
822	if (flags & EVLOOP_NONBLOCK || idlecnt)	1001	if (flags & EVLOOP_NONBLOCK || idlecnt)
823	block = 0.;	1002	block = 0.;
824	else	1003	else
825	{	1004	{
826	block = MAX_BLOCKTIME;	1005	block = MAX_BLOCKTIME;
827		1006
828	if (timercnt)	1007	if (timercnt)
829	{	1008	{
830	ev_tstamp to = timers [0]->at - now + method_fudge;	1009	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
831	if (block > to) block = to;	1010	if (block > to) block = to;
832	}	1011	}
833		1012
834	if (periodiccnt)	1013	if (periodiccnt)
835	{	1014	{
836	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1015	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
837	if (block > to) block = to;	1016	if (block > to) block = to;
838	}	1017	}
839		1018
840	if (block < 0.) block = 0.;	1019	if (block < 0.) block = 0.;
841	}	1020	}
842		1021
843	method_poll (block);	1022	method_poll (EV_A_ block);
844		1023
845	/* update ev_now, do magic */	1024	/* update rt_now, do magic */
846	time_update ();	1025	time_update (EV_A);
847		1026
848	/* queue pending timers and reschedule them */	1027	/* queue pending timers and reschedule them */
849	timers_reify (); /* relative timers called last */	1028	timers_reify (EV_A); /* relative timers called last */
850	periodics_reify (); /* absolute timers called first */	1029	periodics_reify (EV_A); /* absolute timers called first */
851		1030
852	/* queue idle watchers unless io or timers are pending */	1031	/* queue idle watchers unless io or timers are pending */
853	if (!pendingcnt)	1032	if (!pendingcnt)
854	queue_events ((W *)idles, idlecnt, EV_IDLE);	1033	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
855		1034
856	/* queue check watchers, to be executed first */	1035	/* queue check watchers, to be executed first */
857	if (checkcnt)	1036	if (checkcnt)
858	queue_events ((W *)checks, checkcnt, EV_CHECK);	1037	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859		1038
860	call_pending ();	1039	call_pending (EV_A);
861	}	1040	}
862	while (!ev_loop_done);	1041	while (activecnt && !loop_done);
863		1042
864	if (ev_loop_done != 2)	1043	if (loop_done != 2)
865	ev_loop_done = 0;	1044	loop_done = 0;
		1045	}
		1046
		1047	void
		1048	ev_unloop (EV_P_ int how)
		1049	{
		1050	loop_done = how;
866	}	1051	}
867		1052
868	/*****************************************************************************/	1053	/*****************************************************************************/
869		1054
870	static void	1055	inline void
871	wlist_add (WL *head, WL elem)	1056	wlist_add (WL *head, WL elem)
872	{	1057	{
873	elem->next = *head;	1058	elem->next = *head;
874	*head = elem;	1059	*head = elem;
875	}	1060	}
876		1061
877	static void	1062	inline void
878	wlist_del (WL *head, WL elem)	1063	wlist_del (WL *head, WL elem)
879	{	1064	{
880	while (*head)	1065	while (*head)
881	{	1066	{
882	if (*head == elem)	1067	if (*head == elem)
…		…
887		1072
888	head = &(*head)->next;	1073	head = &(*head)->next;
889	}	1074	}
890	}	1075	}
891		1076
892	static void	1077	inline void
893	ev_clear_pending (W w)	1078	ev_clear_pending (EV_P_ W w)
894	{	1079	{
895	if (w->pending)	1080	if (w->pending)
896	{	1081	{
897	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1082	pendings [ABSPRI (w)][w->pending - 1].w = 0;
898	w->pending = 0;	1083	w->pending = 0;
899	}	1084	}
900	}	1085	}
901		1086
902	static void	1087	inline void
903	ev_start (W w, int active)	1088	ev_start (EV_P_ W w, int active)
904	{	1089	{
905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1090	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1091	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907		1092
908	w->active = active;	1093	w->active = active;
		1094	ev_ref (EV_A);
909	}	1095	}
910		1096
911	static void	1097	inline void
912	ev_stop (W w)	1098	ev_stop (EV_P_ W w)
913	{	1099	{
		1100	ev_unref (EV_A);
914	w->active = 0;	1101	w->active = 0;
915	}	1102	}
916		1103
917	/*****************************************************************************/	1104	/*****************************************************************************/
918		1105
919	void	1106	void
920	ev_io_start (struct ev_io *w)	1107	ev_io_start (EV_P_ struct ev_io *w)
921	{	1108	{
922	int fd = w->fd;	1109	int fd = w->fd;
923		1110
924	if (ev_is_active (w))	1111	if (ev_is_active (w))
925	return;	1112	return;
926		1113
927	assert (("ev_io_start called with negative fd", fd >= 0));	1114	assert (("ev_io_start called with negative fd", fd >= 0));
928		1115
929	ev_start ((W)w, 1);	1116	ev_start (EV_A_ (W)w, 1);
930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1117	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
931	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1118	wlist_add ((WL *)&anfds[fd].head, (WL)w);
932		1119
933	fd_change (fd);	1120	fd_change (EV_A_ fd);
934	}	1121	}
935		1122
936	void	1123	void
937	ev_io_stop (struct ev_io *w)	1124	ev_io_stop (EV_P_ struct ev_io *w)
938	{	1125	{
939	ev_clear_pending ((W)w);	1126	ev_clear_pending (EV_A_ (W)w);
940	if (!ev_is_active (w))	1127	if (!ev_is_active (w))
941	return;	1128	return;
942		1129
943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1130	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944	ev_stop ((W)w);	1131	ev_stop (EV_A_ (W)w);
945		1132
946	fd_change (w->fd);	1133	fd_change (EV_A_ w->fd);
947	}	1134	}
948		1135
949	void	1136	void
950	ev_timer_start (struct ev_timer *w)	1137	ev_timer_start (EV_P_ struct ev_timer *w)
951	{	1138	{
952	if (ev_is_active (w))	1139	if (ev_is_active (w))
953	return;	1140	return;
954		1141
955	w->at += now;	1142	((WT)w)->at += mn_now;
956		1143
957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1144	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958		1145
959	ev_start ((W)w, ++timercnt);	1146	ev_start (EV_A_ (W)w, ++timercnt);
960	array_needsize (timers, timermax, timercnt, );	1147	array_needsize (timers, timermax, timercnt, );
961	timers [timercnt - 1] = w;	1148	timers [timercnt - 1] = w;
962	upheap ((WT *)timers, timercnt - 1);	1149	upheap ((WT *)timers, timercnt - 1);
963	}
964		1150
		1151	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1152	}
		1153
965	void	1154	void
966	ev_timer_stop (struct ev_timer *w)	1155	ev_timer_stop (EV_P_ struct ev_timer *w)
967	{	1156	{
968	ev_clear_pending ((W)w);	1157	ev_clear_pending (EV_A_ (W)w);
969	if (!ev_is_active (w))	1158	if (!ev_is_active (w))
970	return;	1159	return;
971		1160
		1161	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1162
972	if (w->active < timercnt--)	1163	if (((W)w)->active < timercnt--)
973	{	1164	{
974	timers [w->active - 1] = timers [timercnt];	1165	timers [((W)w)->active - 1] = timers [timercnt];
975	downheap ((WT *)timers, timercnt, w->active - 1);	1166	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
976	}	1167	}
977		1168
978	w->at = w->repeat;	1169	((WT)w)->at = w->repeat;
979		1170
980	ev_stop ((W)w);	1171	ev_stop (EV_A_ (W)w);
981	}	1172	}
982		1173
983	void	1174	void
984	ev_timer_again (struct ev_timer *w)	1175	ev_timer_again (EV_P_ struct ev_timer *w)
985	{	1176	{
986	if (ev_is_active (w))	1177	if (ev_is_active (w))
987	{	1178	{
988	if (w->repeat)	1179	if (w->repeat)
989	{	1180	{
990	w->at = now + w->repeat;	1181	((WT)w)->at = mn_now + w->repeat;
991	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992	}	1183	}
993	else	1184	else
994	ev_timer_stop (w);	1185	ev_timer_stop (EV_A_ w);
995	}	1186	}
996	else if (w->repeat)	1187	else if (w->repeat)
997	ev_timer_start (w);	1188	ev_timer_start (EV_A_ w);
998	}	1189	}
999		1190
1000	void	1191	void
1001	ev_periodic_start (struct ev_periodic *w)	1192	ev_periodic_start (EV_P_ struct ev_periodic *w)
1002	{	1193	{
1003	if (ev_is_active (w))	1194	if (ev_is_active (w))
1004	return;	1195	return;
1005		1196
1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1197	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007		1198
1008	/* this formula differs from the one in periodic_reify because we do not always round up */	1199	/* this formula differs from the one in periodic_reify because we do not always round up */
1009	if (w->interval)	1200	if (w->interval)
1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1201	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1011		1202
1012	ev_start ((W)w, ++periodiccnt);	1203	ev_start (EV_A_ (W)w, ++periodiccnt);
1013	array_needsize (periodics, periodicmax, periodiccnt, );	1204	array_needsize (periodics, periodicmax, periodiccnt, );
1014	periodics [periodiccnt - 1] = w;	1205	periodics [periodiccnt - 1] = w;
1015	upheap ((WT *)periodics, periodiccnt - 1);	1206	upheap ((WT *)periodics, periodiccnt - 1);
1016	}
1017		1207
		1208	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1209	}
		1210
1018	void	1211	void
1019	ev_periodic_stop (struct ev_periodic *w)	1212	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1020	{	1213	{
1021	ev_clear_pending ((W)w);	1214	ev_clear_pending (EV_A_ (W)w);
1022	if (!ev_is_active (w))	1215	if (!ev_is_active (w))
1023	return;	1216	return;
1024		1217
		1218	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1219
1025	if (w->active < periodiccnt--)	1220	if (((W)w)->active < periodiccnt--)
1026	{	1221	{
1027	periodics [w->active - 1] = periodics [periodiccnt];	1222	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1028	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1223	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1029	}	1224	}
1030		1225
1031	ev_stop ((W)w);	1226	ev_stop (EV_A_ (W)w);
		1227	}
		1228
		1229	void
		1230	ev_idle_start (EV_P_ struct ev_idle *w)
		1231	{
		1232	if (ev_is_active (w))
		1233	return;
		1234
		1235	ev_start (EV_A_ (W)w, ++idlecnt);
		1236	array_needsize (idles, idlemax, idlecnt, );
		1237	idles [idlecnt - 1] = w;
		1238	}
		1239
		1240	void
		1241	ev_idle_stop (EV_P_ struct ev_idle *w)
		1242	{
		1243	ev_clear_pending (EV_A_ (W)w);
		1244	if (ev_is_active (w))
		1245	return;
		1246
		1247	idles [((W)w)->active - 1] = idles [--idlecnt];
		1248	ev_stop (EV_A_ (W)w);
		1249	}
		1250
		1251	void
		1252	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1253	{
		1254	if (ev_is_active (w))
		1255	return;
		1256
		1257	ev_start (EV_A_ (W)w, ++preparecnt);
		1258	array_needsize (prepares, preparemax, preparecnt, );
		1259	prepares [preparecnt - 1] = w;
		1260	}
		1261
		1262	void
		1263	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1264	{
		1265	ev_clear_pending (EV_A_ (W)w);
		1266	if (ev_is_active (w))
		1267	return;
		1268
		1269	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1270	ev_stop (EV_A_ (W)w);
		1271	}
		1272
		1273	void
		1274	ev_check_start (EV_P_ struct ev_check *w)
		1275	{
		1276	if (ev_is_active (w))
		1277	return;
		1278
		1279	ev_start (EV_A_ (W)w, ++checkcnt);
		1280	array_needsize (checks, checkmax, checkcnt, );
		1281	checks [checkcnt - 1] = w;
		1282	}
		1283
		1284	void
		1285	ev_check_stop (EV_P_ struct ev_check *w)
		1286	{
		1287	ev_clear_pending (EV_A_ (W)w);
		1288	if (ev_is_active (w))
		1289	return;
		1290
		1291	checks [((W)w)->active - 1] = checks [--checkcnt];
		1292	ev_stop (EV_A_ (W)w);
1032	}	1293	}
1033		1294
1034	#ifndef SA_RESTART	1295	#ifndef SA_RESTART
1035	# define SA_RESTART 0	1296	# define SA_RESTART 0
1036	#endif	1297	#endif
1037		1298
1038	void	1299	void
1039	ev_signal_start (struct ev_signal *w)	1300	ev_signal_start (EV_P_ struct ev_signal *w)
1040	{	1301	{
		1302	#if EV_MULTIPLICITY
		1303	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1304	#endif
1041	if (ev_is_active (w))	1305	if (ev_is_active (w))
1042	return;	1306	return;
1043		1307
1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1308	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045		1309
1046	ev_start ((W)w, 1);	1310	ev_start (EV_A_ (W)w, 1);
1047	array_needsize (signals, signalmax, w->signum, signals_init);	1311	array_needsize (signals, signalmax, w->signum, signals_init);
1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1312	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049		1313
1050	if (!w->next)	1314	if (!((WL)w)->next)
1051	{	1315	{
1052	struct sigaction sa;	1316	struct sigaction sa;
1053	sa.sa_handler = sighandler;	1317	sa.sa_handler = sighandler;
1054	sigfillset (&sa.sa_mask);	1318	sigfillset (&sa.sa_mask);
1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1319	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056	sigaction (w->signum, &sa, 0);	1320	sigaction (w->signum, &sa, 0);
1057	}	1321	}
1058	}	1322	}
1059		1323
1060	void	1324	void
1061	ev_signal_stop (struct ev_signal *w)	1325	ev_signal_stop (EV_P_ struct ev_signal *w)
1062	{	1326	{
1063	ev_clear_pending ((W)w);	1327	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
1065	return;	1329	return;
1066		1330
1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1331	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068	ev_stop ((W)w);	1332	ev_stop (EV_A_ (W)w);
1069		1333
1070	if (!signals [w->signum - 1].head)	1334	if (!signals [w->signum - 1].head)
1071	signal (w->signum, SIG_DFL);	1335	signal (w->signum, SIG_DFL);
1072	}	1336	}
1073		1337
1074	void	1338	void
1075	ev_idle_start (struct ev_idle *w)	1339	ev_child_start (EV_P_ struct ev_child *w)
1076	{	1340	{
		1341	#if EV_MULTIPLICITY
		1342	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1343	#endif
1077	if (ev_is_active (w))	1344	if (ev_is_active (w))
1078	return;	1345	return;
1079		1346
1080	ev_start ((W)w, ++idlecnt);	1347	ev_start (EV_A_ (W)w, 1);
1081	array_needsize (idles, idlemax, idlecnt, );	1348	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1082	idles [idlecnt - 1] = w;
1083	}	1349	}
1084		1350
1085	void	1351	void
1086	ev_idle_stop (struct ev_idle *w)	1352	ev_child_stop (EV_P_ struct ev_child *w)
1087	{	1353	{
1088	ev_clear_pending ((W)w);	1354	ev_clear_pending (EV_A_ (W)w);
1089	if (ev_is_active (w))	1355	if (ev_is_active (w))
1090	return;	1356	return;
1091		1357
1092	idles [w->active - 1] = idles [--idlecnt];
1093	ev_stop ((W)w);
1094	}
1095
1096	void
1097	ev_prepare_start (struct ev_prepare *w)
1098	{
1099	if (ev_is_active (w))
1100	return;
1101
1102	ev_start ((W)w, ++preparecnt);
1103	array_needsize (prepares, preparemax, preparecnt, );
1104	prepares [preparecnt - 1] = w;
1105	}
1106
1107	void
1108	ev_prepare_stop (struct ev_prepare *w)
1109	{
1110	ev_clear_pending ((W)w);
1111	if (ev_is_active (w))
1112	return;
1113
1114	prepares [w->active - 1] = prepares [--preparecnt];
1115	ev_stop ((W)w);
1116	}
1117
1118	void
1119	ev_check_start (struct ev_check *w)
1120	{
1121	if (ev_is_active (w))
1122	return;
1123
1124	ev_start ((W)w, ++checkcnt);
1125	array_needsize (checks, checkmax, checkcnt, );
1126	checks [checkcnt - 1] = w;
1127	}
1128
1129	void
1130	ev_check_stop (struct ev_check *w)
1131	{
1132	ev_clear_pending ((W)w);
1133	if (ev_is_active (w))
1134	return;
1135
1136	checks [w->active - 1] = checks [--checkcnt];
1137	ev_stop ((W)w);
1138	}
1139
1140	void
1141	ev_child_start (struct ev_child *w)
1142	{
1143	if (ev_is_active (w))
1144	return;
1145
1146	ev_start ((W)w, 1);
1147	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1148	}
1149
1150	void
1151	ev_child_stop (struct ev_child *w)
1152	{
1153	ev_clear_pending ((W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1358	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1158	ev_stop ((W)w);	1359	ev_stop (EV_A_ (W)w);
1159	}	1360	}
1160		1361
1161	/*****************************************************************************/	1362	/*****************************************************************************/
1162		1363
1163	struct ev_once	1364	struct ev_once
…		…
1167	void (*cb)(int revents, void *arg);	1368	void (*cb)(int revents, void *arg);
1168	void *arg;	1369	void *arg;
1169	};	1370	};
1170		1371
1171	static void	1372	static void
1172	once_cb (struct ev_once *once, int revents)	1373	once_cb (EV_P_ struct ev_once *once, int revents)
1173	{	1374	{
1174	void (*cb)(int revents, void *arg) = once->cb;	1375	void (*cb)(int revents, void *arg) = once->cb;
1175	void *arg = once->arg;	1376	void *arg = once->arg;
1176		1377
1177	ev_io_stop (&once->io);	1378	ev_io_stop (EV_A_ &once->io);
1178	ev_timer_stop (&once->to);	1379	ev_timer_stop (EV_A_ &once->to);
1179	free (once);	1380	free (once);
1180		1381
1181	cb (revents, arg);	1382	cb (revents, arg);
1182	}	1383	}
1183		1384
1184	static void	1385	static void
1185	once_cb_io (struct ev_io *w, int revents)	1386	once_cb_io (EV_P_ struct ev_io *w, int revents)
1186	{	1387	{
1187	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1388	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1188	}	1389	}
1189		1390
1190	static void	1391	static void
1191	once_cb_to (struct ev_timer *w, int revents)	1392	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1192	{	1393	{
1193	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1394	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1194	}	1395	}
1195		1396
1196	void	1397	void
1197	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1398	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1198	{	1399	{
1199	struct ev_once *once = malloc (sizeof (struct ev_once));	1400	struct ev_once *once = malloc (sizeof (struct ev_once));
1200		1401
1201	if (!once)	1402	if (!once)
1202	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1403	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1207		1408
1208	ev_watcher_init (&once->io, once_cb_io);	1409	ev_watcher_init (&once->io, once_cb_io);
1209	if (fd >= 0)	1410	if (fd >= 0)
1210	{	1411	{
1211	ev_io_set (&once->io, fd, events);	1412	ev_io_set (&once->io, fd, events);
1212	ev_io_start (&once->io);	1413	ev_io_start (EV_A_ &once->io);
1213	}	1414	}
1214		1415
1215	ev_watcher_init (&once->to, once_cb_to);	1416	ev_watcher_init (&once->to, once_cb_to);
1216	if (timeout >= 0.)	1417	if (timeout >= 0.)
1217	{	1418	{
1218	ev_timer_set (&once->to, timeout, 0.);	1419	ev_timer_set (&once->to, timeout, 0.);
1219	ev_timer_start (&once->to);	1420	ev_timer_start (EV_A_ &once->to);
1220	}	1421	}
1221	}	1422	}
1222	}	1423	}
1223		1424
1224	/*****************************************************************************/
1225
1226	#if 0
1227
1228	struct ev_io wio;
1229
1230	static void
1231	sin_cb (struct ev_io *w, int revents)
1232	{
1233	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1234	}
1235
1236	static void
1237	ocb (struct ev_timer *w, int revents)
1238	{
1239	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1240	ev_timer_stop (w);
1241	ev_timer_start (w);
1242	}
1243
1244	static void
1245	scb (struct ev_signal *w, int revents)
1246	{
1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1248	ev_io_stop (&wio);
1249	ev_io_start (&wio);
1250	}
1251
1252	static void
1253	gcb (struct ev_signal *w, int revents)
1254	{
1255	fprintf (stderr, "generic %x\n", revents);
1256
1257	}
1258
1259	int main (void)
1260	{
1261	ev_init (0);
1262
1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
1264	ev_io_start (&wio);
1265
1266	struct ev_timer t[10000];
1267
1268	#if 0
1269	int i;
1270	for (i = 0; i < 10000; ++i)
1271	{
1272	struct ev_timer *w = t + i;
1273	ev_watcher_init (w, ocb, i);
1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1275	ev_timer_start (w);
1276	if (drand48 () < 0.5)
1277	ev_timer_stop (w);
1278	}
1279	#endif
1280
1281	struct ev_timer t1;
1282	ev_timer_init (&t1, ocb, 5, 10);
1283	ev_timer_start (&t1);
1284
1285	struct ev_signal sig;
1286	ev_signal_init (&sig, scb, SIGQUIT);
1287	ev_signal_start (&sig);
1288
1289	struct ev_check cw;
1290	ev_check_init (&cw, gcb);
1291	ev_check_start (&cw);
1292
1293	struct ev_idle iw;
1294	ev_idle_init (&iw, gcb);
1295	ev_idle_start (&iw);
1296
1297	ev_loop (0);
1298
1299	return 0;
1300	}
1301
1302	#endif
1303
1304
1305
1306

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