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Comparing libev/ev.c (file contents):
Revision 1.48 by root, Sat Nov 3 12:19:31 2007 UTC vs.
Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#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_io *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 = anfd->head; w; w = 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	{
…		…
262	ANFD *anfd = anfds + fd;	304	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	305	struct ev_io *w;
264		306
265	int events = 0;	307	int events = 0;
266		308
267	for (w = anfd->head; w; w = 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	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	339	while ((w = (struct ev_io *)anfds [fd].head))
302	{	340	{
303	ev_io_stop (w);	341	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	342	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	343	}
306	}	344	}
307		345
308	/* called on EBADF to verify fds */	346	/* called on EBADF to verify fds */
309	static void	347	static void
310	fd_ebadf (void)	348	fd_ebadf (EV_P)
311	{	349	{
312	int fd;	350	int fd;
313		351
314	for (fd = 0; fd < anfdmax; ++fd)	352	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	353	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	355	fd_kill (EV_A_ fd);
318	}	356	}
319		357
320	/* 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 */
321	static void	359	static void
322	fd_enomem (void)	360	fd_enomem (EV_P)
323	{	361	{
324	int fd = anfdmax;	362	int fd;
325		363
326	while (fd--)	364	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	365	if (anfds [fd].events)
328	{	366	{
329	close (fd);	367	close (fd);
330	fd_kill (fd);	368	fd_kill (EV_A_ fd);
331	return;	369	return;
332	}	370	}
333	}	371	}
334		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
335	/*****************************************************************************/	388	/*****************************************************************************/
336		389
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	390	static void
344	upheap (WT *timers, int k)	391	upheap (WT *heap, int k)
345	{	392	{
346	WT w = timers [k];	393	WT w = heap [k];
347		394
348	while (k && timers [k >> 1]->at > w->at)	395	while (k && heap [k >> 1]->at > w->at)
349	{	396	{
350	timers [k] = timers [k >> 1];	397	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	398	((W)heap [k])->active = k + 1;
352	k >>= 1;	399	k >>= 1;
353	}	400	}
354		401
355	timers [k] = w;	402	heap [k] = w;
356	timers [k]->active = k + 1;	403	((W)heap [k])->active = k + 1;
357		404
358	}	405	}
359		406
360	static void	407	static void
361	downheap (WT *timers, int N, int k)	408	downheap (WT *heap, int N, int k)
362	{	409	{
363	WT w = timers [k];	410	WT w = heap [k];
364		411
365	while (k < (N >> 1))	412	while (k < (N >> 1))
366	{	413	{
367	int j = k << 1;	414	int j = k << 1;
368		415
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	416	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	417	++j;
371		418
372	if (w->at <= timers [j]->at)	419	if (w->at <= heap [j]->at)
373	break;	420	break;
374		421
375	timers [k] = timers [j];	422	heap [k] = heap [j];
376	timers [k]->active = k + 1;	423	((W)heap [k])->active = k + 1;
377	k = j;	424	k = j;
378	}	425	}
379		426
380	timers [k] = w;	427	heap [k] = w;
381	timers [k]->active = k + 1;	428	((W)heap [k])->active = k + 1;
382	}	429	}
383		430
384	/*****************************************************************************/	431	/*****************************************************************************/
385		432
386	typedef struct	433	typedef struct
387	{	434	{
388	struct ev_signal *head;	435	struct ev_watcher_list *head;
389	sig_atomic_t volatile gotsig;	436	sig_atomic_t volatile gotsig;
390	} ANSIG;	437	} ANSIG;
391		438
392	static ANSIG *signals;	439	static ANSIG *signals;
393	static int signalmax;	440	static int signalmax;
…		…
421	errno = old_errno;	468	errno = old_errno;
422	}	469	}
423	}	470	}
424		471
425	static void	472	static void
426	sigcb (struct ev_io *iow, int revents)	473	sigcb (EV_P_ struct ev_io *iow, int revents)
427	{	474	{
428	struct ev_signal *w;	475	struct ev_watcher_list *w;
429	int signum;	476	int signum;
430		477
431	read (sigpipe [0], &revents, 1);	478	read (sigpipe [0], &revents, 1);
432	gotsig = 0;	479	gotsig = 0;
433		480
…		…
435	if (signals [signum].gotsig)	482	if (signals [signum].gotsig)
436	{	483	{
437	signals [signum].gotsig = 0;	484	signals [signum].gotsig = 0;
438		485
439	for (w = signals [signum].head; w; w = w->next)	486	for (w = signals [signum].head; w; w = w->next)
440	event ((W)w, EV_SIGNAL);	487	event (EV_A_ (W)w, EV_SIGNAL);
441	}	488	}
442	}	489	}
443		490
444	static void	491	static void
445	siginit (void)	492	siginit (EV_P)
446	{	493	{
447	#ifndef WIN32	494	#ifndef WIN32
448	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
449	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
450		497
…		…
452	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
453	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
454	#endif	501	#endif
455		502
456	ev_io_set (&sigev, sigpipe [0], EV_READ);	503	ev_io_set (&sigev, sigpipe [0], EV_READ);
457	ev_io_start (&sigev);	504	ev_io_start (EV_A_ &sigev);
		505	ev_unref (EV_A); /* child watcher should not keep loop alive */
458	}	506	}
459		507
460	/*****************************************************************************/	508	/*****************************************************************************/
461		509
462	static struct ev_idle **idles;	510	#ifndef WIN32
463	static int idlemax, idlecnt;
464
465	static struct ev_prepare **prepares;
466	static int preparemax, preparecnt;
467
468	static struct ev_check **checks;
469	static int checkmax, checkcnt;
470
471	/*****************************************************************************/
472		511
473	static struct ev_child *childs [PID_HASHSIZE];	512	static struct ev_child *childs [PID_HASHSIZE];
474	static struct ev_signal childev;	513	static struct ev_signal childev;
475		514
476	#ifndef WIN32
477
478	#ifndef WCONTINUED	515	#ifndef WCONTINUED
479	# define WCONTINUED 0	516	# define WCONTINUED 0
480	#endif	517	#endif
481		518
482	static void	519	static void
483	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)
484	{	521	{
485	struct ev_child *w;	522	struct ev_child *w;
486		523
487	for (w = childs [chain & (PID_HASHSIZE - 1)]; w; w = w->next)	524	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
488	if (w->pid == pid || !w->pid)	525	if (w->pid == pid || !w->pid)
489	{	526	{
490	w->priority = sw->priority; /* need to do it *now* */	527	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
491	w->rpid = pid;	528	w->rpid = pid;
492	w->rstatus = status;	529	w->rstatus = status;
493	printf ("rpid %p %d %d\n", w, pid, w->pid);//D
494	event ((W)w, EV_CHILD);	530	event (EV_A_ (W)w, EV_CHILD);
495	}	531	}
496	}	532	}
497		533
498	static void	534	static void
499	childcb (struct ev_signal *sw, int revents)	535	childcb (EV_P_ struct ev_signal *sw, int revents)
500	{	536	{
501	int pid, status;	537	int pid, status;
502		538
503	printf ("chld %x\n", revents);//D
504	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
505	{	540	{
506	/* 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 */
507	event ((W)sw, EV_SIGNAL);	542	event (EV_A_ (W)sw, EV_SIGNAL);
508		543
509	child_reap (sw, pid, pid, status);	544	child_reap (EV_A_ sw, pid, pid, status);
510	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 */
511	}	546	}
512	}	547	}
513		548
514	#endif	549	#endif
515		550
…		…
538	ev_version_minor (void)	573	ev_version_minor (void)
539	{	574	{
540	return EV_VERSION_MINOR;	575	return EV_VERSION_MINOR;
541	}	576	}
542		577
543	/* return true if we are running with elevated privileges and ignore env variables */	578	/* return true if we are running with elevated privileges and should ignore env variables */
544	static int	579	static int
545	enable_secure ()	580	enable_secure (void)
546	{	581	{
		582	#ifdef WIN32
		583	return 0;
		584	#else
547	return getuid () != geteuid ()	585	return getuid () != geteuid ()
548	|| getgid () != getegid ();	586	|| getgid () != getegid ();
		587	#endif
549	}	588	}
550		589
551	int ev_init (int methods)	590	int
		591	ev_method (EV_P)
552	{	592	{
		593	return method;
		594	}
		595
		596	static void
		597	loop_init (EV_P_ int methods)
		598	{
553	if (!ev_method)	599	if (!method)
554	{	600	{
555	#if EV_USE_MONOTONIC	601	#if EV_USE_MONOTONIC
556	{	602	{
557	struct timespec ts;	603	struct timespec ts;
558	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
559	have_monotonic = 1;	605	have_monotonic = 1;
560	}	606	}
561	#endif	607	#endif
562		608
563	ev_now = ev_time ();	609	rt_now = ev_time ();
564	now = get_clock ();	610	mn_now = get_clock ();
565	now_floor = now;	611	now_floor = mn_now;
566	diff = ev_now - now;	612	rtmn_diff = rt_now - mn_now;
567
568	if (pipe (sigpipe))
569	return 0;
570		613
571	if (methods == EVMETHOD_AUTO)	614	if (methods == EVMETHOD_AUTO)
572	if (!enable_secure () && getenv ("LIBEV_METHODS"))	615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
573	methods = atoi (getenv ("LIBEV_METHODS"));	616	methods = atoi (getenv ("LIBEV_METHODS"));
574	else	617	else
575	methods = EVMETHOD_ANY;	618	methods = EVMETHOD_ANY;
576		619
577	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
578	#if EV_USE_KQUEUE	624	#if EV_USE_KQUEUE
579	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
580	#endif	626	#endif
581	#if EV_USE_EPOLL	627	#if EV_USE_EPOLL
582	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
583	#endif	629	#endif
584	#if EV_USE_POLL	630	#if EV_USE_POLL
585	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
586	#endif	632	#endif
587	#if EV_USE_SELECT	633	#if EV_USE_SELECT
588	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
589	#endif	635	#endif
		636	}
		637	}
590		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
591	if (ev_method)	741	if (ev_method (EV_A))
592	{	742	{
593	ev_watcher_init (&sigev, sigcb);	743	ev_watcher_init (&sigev, sigcb);
594	ev_set_priority (&sigev, EV_MAXPRI);	744	ev_set_priority (&sigev, EV_MAXPRI);
595	siginit ();	745	siginit (EV_A);
596		746
597	#ifndef WIN32	747	#ifndef WIN32
598	ev_signal_init (&childev, childcb, SIGCHLD);	748	ev_signal_init (&childev, childcb, SIGCHLD);
599	ev_set_priority (&childev, EV_MAXPRI);	749	ev_set_priority (&childev, EV_MAXPRI);
600	ev_signal_start (&childev);	750	ev_signal_start (EV_A_ &childev);
		751	ev_unref (EV_A); /* child watcher should not keep loop alive */
601	#endif	752	#endif
602	}	753	}
		754	else
		755	default_loop = 0;
603	}	756	}
604		757
605	return ev_method;	758	return default_loop;
606	}	759	}
607		760
608	/*****************************************************************************/
609
610	void	761	void
611	ev_fork_prepare (void)	762	ev_default_destroy (void)
612	{	763	{
613	/* nop */	764	#if EV_MULTIPLICITY
614	}	765	struct ev_loop *loop = default_loop;
615
616	void
617	ev_fork_parent (void)
618	{
619	/* nop */
620	}
621
622	void
623	ev_fork_child (void)
624	{
625	#if EV_USE_EPOLL
626	if (ev_method == EVMETHOD_EPOLL)
627	epoll_postfork_child ();
628	#endif	766	#endif
629		767
		768	ev_ref (EV_A); /* child watcher */
		769	ev_signal_stop (EV_A_ &childev);
		770
		771	ev_ref (EV_A); /* signal watcher */
630	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);
631	close (sigpipe [0]);	790	close (sigpipe [0]);
632	close (sigpipe [1]);	791	close (sigpipe [1]);
633	pipe (sigpipe);	792	pipe (sigpipe);
		793
		794	ev_ref (EV_A); /* signal watcher */
634	siginit ();	795	siginit (EV_A);
635	}	796	}
636		797
637	/*****************************************************************************/	798	/*****************************************************************************/
638		799
639	static void	800	static void
640	call_pending (void)	801	call_pending (EV_P)
641	{	802	{
642	int pri;	803	int pri;
643		804
644	for (pri = NUMPRI; pri--; )	805	for (pri = NUMPRI; pri--; )
645	while (pendingcnt [pri])	806	while (pendingcnt [pri])
…		…
647	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
648		809
649	if (p->w)	810	if (p->w)
650	{	811	{
651	p->w->pending = 0;	812	p->w->pending = 0;
652	p->w->cb (p->w, p->events);	813
		814	((void (*)(EV_P_ W, int))p->w->cb) (EV_A_ p->w, p->events);
653	}	815	}
654	}	816	}
655	}	817	}
656		818
657	static void	819	static void
658	timers_reify (void)	820	timers_reify (EV_P)
659	{	821	{
660	while (timercnt && timers [0]->at <= now)	822	while (timercnt && ((WT)timers [0])->at <= mn_now)
661	{	823	{
662	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)));
663		827
664	/* first reschedule or stop timer */	828	/* first reschedule or stop timer */
665	if (w->repeat)	829	if (w->repeat)
666	{	830	{
667	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.));
668	w->at = now + w->repeat;	832	((WT)w)->at = mn_now + w->repeat;
669	downheap ((WT *)timers, timercnt, 0);	833	downheap ((WT *)timers, timercnt, 0);
670	}	834	}
671	else	835	else
672	ev_timer_stop (w); /* nonrepeating: stop timer */	836	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
673		837
674	event ((W)w, EV_TIMEOUT);	838	event (EV_A_ (W)w, EV_TIMEOUT);
675	}	839	}
676	}	840	}
677		841
678	static void	842	static void
679	periodics_reify (void)	843	periodics_reify (EV_P)
680	{	844	{
681	while (periodiccnt && periodics [0]->at <= ev_now)	845	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
682	{	846	{
683	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)));
684		850
685	/* first reschedule or stop timer */	851	/* first reschedule or stop timer */
686	if (w->interval)	852	if (w->interval)
687	{	853	{
688	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;
689	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));
690	downheap ((WT *)periodics, periodiccnt, 0);	856	downheap ((WT *)periodics, periodiccnt, 0);
691	}	857	}
692	else	858	else
693	ev_periodic_stop (w); /* nonrepeating: stop timer */	859	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
694		860
695	event ((W)w, EV_PERIODIC);	861	event (EV_A_ (W)w, EV_PERIODIC);
696	}	862	}
697	}	863	}
698		864
699	static void	865	static void
700	periodics_reschedule (ev_tstamp diff)	866	periodics_reschedule (EV_P)
701	{	867	{
702	int i;	868	int i;
703		869
704	/* adjust periodics after time jump */	870	/* adjust periodics after time jump */
705	for (i = 0; i < periodiccnt; ++i)	871	for (i = 0; i < periodiccnt; ++i)
706	{	872	{
707	struct ev_periodic *w = periodics [i];	873	struct ev_periodic *w = periodics [i];
708		874
709	if (w->interval)	875	if (w->interval)
710	{	876	{
711	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;
712		878
713	if (fabs (diff) >= 1e-4)	879	if (fabs (diff) >= 1e-4)
714	{	880	{
715	ev_periodic_stop (w);	881	ev_periodic_stop (EV_A_ w);
716	ev_periodic_start (w);	882	ev_periodic_start (EV_A_ w);
717		883
718	i = 0; /* restart loop, inefficient, but time jumps should be rare */	884	i = 0; /* restart loop, inefficient, but time jumps should be rare */
719	}	885	}
720	}	886	}
721	}	887	}
722	}	888	}
723		889
724	static int	890	inline int
725	time_update_monotonic (void)	891	time_update_monotonic (EV_P)
726	{	892	{
727	now = get_clock ();	893	mn_now = get_clock ();
728		894
729	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	895	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
730	{	896	{
731	ev_now = now + diff;	897	rt_now = rtmn_diff + mn_now;
732	return 0;	898	return 0;
733	}	899	}
734	else	900	else
735	{	901	{
736	now_floor = now;	902	now_floor = mn_now;
737	ev_now = ev_time ();	903	rt_now = ev_time ();
738	return 1;	904	return 1;
739	}	905	}
740	}	906	}
741		907
742	static void	908	static void
743	time_update (void)	909	time_update (EV_P)
744	{	910	{
745	int i;	911	int i;
746		912
747	#if EV_USE_MONOTONIC	913	#if EV_USE_MONOTONIC
748	if (expect_true (have_monotonic))	914	if (expect_true (have_monotonic))
749	{	915	{
750	if (time_update_monotonic ())	916	if (time_update_monotonic (EV_A))
751	{	917	{
752	ev_tstamp odiff = diff;	918	ev_tstamp odiff = rtmn_diff;
753		919
754	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 */
755	{	921	{
756	diff = ev_now - now;	922	rtmn_diff = rt_now - mn_now;
757		923
758	if (fabs (odiff - diff) < MIN_TIMEJUMP)	924	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
759	return; /* all is well */	925	return; /* all is well */
760		926
761	ev_now = ev_time ();	927	rt_now = ev_time ();
762	now = get_clock ();	928	mn_now = get_clock ();
763	now_floor = now;	929	now_floor = mn_now;
764	}	930	}
765		931
766	periodics_reschedule (diff - odiff);	932	periodics_reschedule (EV_A);
767	/* 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) */
768	}	935	}
769	}	936	}
770	else	937	else
771	#endif	938	#endif
772	{	939	{
773	ev_now = ev_time ();	940	rt_now = ev_time ();
774		941
775	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))
776	{	943	{
777	periodics_reschedule (ev_now - now);	944	periodics_reschedule (EV_A);
778		945
779	/* 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 */
780	for (i = 0; i < timercnt; ++i)	947	for (i = 0; i < timercnt; ++i)
781	timers [i]->at += diff;	948	((WT)timers [i])->at += rt_now - mn_now;
782	}	949	}
783		950
784	now = ev_now;	951	mn_now = rt_now;
785	}	952	}
786	}	953	}
787		954
788	int ev_loop_done;	955	void
		956	ev_ref (EV_P)
		957	{
		958	++activecnt;
		959	}
789		960
		961	void
		962	ev_unref (EV_P)
		963	{
		964	--activecnt;
		965	}
		966
		967	static int loop_done;
		968
		969	void
790	void ev_loop (int flags)	970	ev_loop (EV_P_ int flags)
791	{	971	{
792	double block;	972	double block;
793	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	973	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
794		974
795	do	975	do
796	{	976	{
797	/* queue check watchers (and execute them) */	977	/* queue check watchers (and execute them) */
798	if (expect_false (preparecnt))	978	if (expect_false (preparecnt))
799	{	979	{
800	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	980	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
801	call_pending ();	981	call_pending (EV_A);
802	}	982	}
803		983
804	/* update fd-related kernel structures */	984	/* update fd-related kernel structures */
805	fd_reify ();	985	fd_reify (EV_A);
806		986
807	/* calculate blocking time */	987	/* calculate blocking time */
808		988
809	/* 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
810	always have timers, we just calculate it always */	990	always have timers, we just calculate it always */
811	#if EV_USE_MONOTONIC	991	#if EV_USE_MONOTONIC
812	if (expect_true (have_monotonic))	992	if (expect_true (have_monotonic))
813	time_update_monotonic ();	993	time_update_monotonic (EV_A);
814	else	994	else
815	#endif	995	#endif
816	{	996	{
817	ev_now = ev_time ();	997	rt_now = ev_time ();
818	now = ev_now;	998	mn_now = rt_now;
819	}	999	}
820		1000
821	if (flags & EVLOOP_NONBLOCK || idlecnt)	1001	if (flags & EVLOOP_NONBLOCK || idlecnt)
822	block = 0.;	1002	block = 0.;
823	else	1003	else
824	{	1004	{
825	block = MAX_BLOCKTIME;	1005	block = MAX_BLOCKTIME;
826		1006
827	if (timercnt)	1007	if (timercnt)
828	{	1008	{
829	ev_tstamp to = timers [0]->at - now + method_fudge;	1009	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
830	if (block > to) block = to;	1010	if (block > to) block = to;
831	}	1011	}
832		1012
833	if (periodiccnt)	1013	if (periodiccnt)
834	{	1014	{
835	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1015	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
836	if (block > to) block = to;	1016	if (block > to) block = to;
837	}	1017	}
838		1018
839	if (block < 0.) block = 0.;	1019	if (block < 0.) block = 0.;
840	}	1020	}
841		1021
842	method_poll (block);	1022	method_poll (EV_A_ block);
843		1023
844	/* update ev_now, do magic */	1024	/* update rt_now, do magic */
845	time_update ();	1025	time_update (EV_A);
846		1026
847	/* queue pending timers and reschedule them */	1027	/* queue pending timers and reschedule them */
848	timers_reify (); /* relative timers called last */	1028	timers_reify (EV_A); /* relative timers called last */
849	periodics_reify (); /* absolute timers called first */	1029	periodics_reify (EV_A); /* absolute timers called first */
850		1030
851	/* queue idle watchers unless io or timers are pending */	1031	/* queue idle watchers unless io or timers are pending */
852	if (!pendingcnt)	1032	if (!pendingcnt)
853	queue_events ((W *)idles, idlecnt, EV_IDLE);	1033	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
854		1034
855	/* queue check watchers, to be executed first */	1035	/* queue check watchers, to be executed first */
856	if (checkcnt)	1036	if (checkcnt)
857	queue_events ((W *)checks, checkcnt, EV_CHECK);	1037	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
858		1038
859	call_pending ();	1039	call_pending (EV_A);
860	}	1040	}
861	while (!ev_loop_done);	1041	while (activecnt && !loop_done);
862		1042
863	if (ev_loop_done != 2)	1043	if (loop_done != 2)
864	ev_loop_done = 0;	1044	loop_done = 0;
		1045	}
		1046
		1047	void
		1048	ev_unloop (EV_P_ int how)
		1049	{
		1050	loop_done = how;
865	}	1051	}
866		1052
867	/*****************************************************************************/	1053	/*****************************************************************************/
868		1054
869	static void	1055	inline void
870	wlist_add (WL *head, WL elem)	1056	wlist_add (WL *head, WL elem)
871	{	1057	{
872	elem->next = *head;	1058	elem->next = *head;
873	*head = elem;	1059	*head = elem;
874	}	1060	}
875		1061
876	static void	1062	inline void
877	wlist_del (WL *head, WL elem)	1063	wlist_del (WL *head, WL elem)
878	{	1064	{
879	while (*head)	1065	while (*head)
880	{	1066	{
881	if (*head == elem)	1067	if (*head == elem)
…		…
886		1072
887	head = &(*head)->next;	1073	head = &(*head)->next;
888	}	1074	}
889	}	1075	}
890		1076
891	static void	1077	inline void
892	ev_clear_pending (W w)	1078	ev_clear_pending (EV_P_ W w)
893	{	1079	{
894	if (w->pending)	1080	if (w->pending)
895	{	1081	{
896	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1082	pendings [ABSPRI (w)][w->pending - 1].w = 0;
897	w->pending = 0;	1083	w->pending = 0;
898	}	1084	}
899	}	1085	}
900		1086
901	static void	1087	inline void
902	ev_start (W w, int active)	1088	ev_start (EV_P_ W w, int active)
903	{	1089	{
904	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1090	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
905	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1091	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
906		1092
907	w->active = active;	1093	w->active = active;
		1094	ev_ref (EV_A);
908	}	1095	}
909		1096
910	static void	1097	inline void
911	ev_stop (W w)	1098	ev_stop (EV_P_ W w)
912	{	1099	{
		1100	ev_unref (EV_A);
913	w->active = 0;	1101	w->active = 0;
914	}	1102	}
915		1103
916	/*****************************************************************************/	1104	/*****************************************************************************/
917		1105
918	void	1106	void
919	ev_io_start (struct ev_io *w)	1107	ev_io_start (EV_P_ struct ev_io *w)
920	{	1108	{
921	int fd = w->fd;	1109	int fd = w->fd;
922		1110
923	if (ev_is_active (w))	1111	if (ev_is_active (w))
924	return;	1112	return;
925		1113
926	assert (("ev_io_start called with negative fd", fd >= 0));	1114	assert (("ev_io_start called with negative fd", fd >= 0));
927		1115
928	ev_start ((W)w, 1);	1116	ev_start (EV_A_ (W)w, 1);
929	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1117	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
930	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1118	wlist_add ((WL *)&anfds[fd].head, (WL)w);
931		1119
932	fd_change (fd);	1120	fd_change (EV_A_ fd);
933	}	1121	}
934		1122
935	void	1123	void
936	ev_io_stop (struct ev_io *w)	1124	ev_io_stop (EV_P_ struct ev_io *w)
937	{	1125	{
938	ev_clear_pending ((W)w);	1126	ev_clear_pending (EV_A_ (W)w);
939	if (!ev_is_active (w))	1127	if (!ev_is_active (w))
940	return;	1128	return;
941		1129
942	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1130	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
943	ev_stop ((W)w);	1131	ev_stop (EV_A_ (W)w);
944		1132
945	fd_change (w->fd);	1133	fd_change (EV_A_ w->fd);
946	}	1134	}
947		1135
948	void	1136	void
949	ev_timer_start (struct ev_timer *w)	1137	ev_timer_start (EV_P_ struct ev_timer *w)
950	{	1138	{
951	if (ev_is_active (w))	1139	if (ev_is_active (w))
952	return;	1140	return;
953		1141
954	w->at += now;	1142	((WT)w)->at += mn_now;
955		1143
956	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.));
957		1145
958	ev_start ((W)w, ++timercnt);	1146	ev_start (EV_A_ (W)w, ++timercnt);
959	array_needsize (timers, timermax, timercnt, );	1147	array_needsize (timers, timermax, timercnt, );
960	timers [timercnt - 1] = w;	1148	timers [timercnt - 1] = w;
961	upheap ((WT *)timers, timercnt - 1);	1149	upheap ((WT *)timers, timercnt - 1);
962	}
963		1150
		1151	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1152	}
		1153
964	void	1154	void
965	ev_timer_stop (struct ev_timer *w)	1155	ev_timer_stop (EV_P_ struct ev_timer *w)
966	{	1156	{
967	ev_clear_pending ((W)w);	1157	ev_clear_pending (EV_A_ (W)w);
968	if (!ev_is_active (w))	1158	if (!ev_is_active (w))
969	return;	1159	return;
970		1160
		1161	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1162
971	if (w->active < timercnt--)	1163	if (((W)w)->active < timercnt--)
972	{	1164	{
973	timers [w->active - 1] = timers [timercnt];	1165	timers [((W)w)->active - 1] = timers [timercnt];
974	downheap ((WT *)timers, timercnt, w->active - 1);	1166	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
975	}	1167	}
976		1168
977	w->at = w->repeat;	1169	((WT)w)->at = w->repeat;
978		1170
979	ev_stop ((W)w);	1171	ev_stop (EV_A_ (W)w);
980	}	1172	}
981		1173
982	void	1174	void
983	ev_timer_again (struct ev_timer *w)	1175	ev_timer_again (EV_P_ struct ev_timer *w)
984	{	1176	{
985	if (ev_is_active (w))	1177	if (ev_is_active (w))
986	{	1178	{
987	if (w->repeat)	1179	if (w->repeat)
988	{	1180	{
989	w->at = now + w->repeat;	1181	((WT)w)->at = mn_now + w->repeat;
990	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
991	}	1183	}
992	else	1184	else
993	ev_timer_stop (w);	1185	ev_timer_stop (EV_A_ w);
994	}	1186	}
995	else if (w->repeat)	1187	else if (w->repeat)
996	ev_timer_start (w);	1188	ev_timer_start (EV_A_ w);
997	}	1189	}
998		1190
999	void	1191	void
1000	ev_periodic_start (struct ev_periodic *w)	1192	ev_periodic_start (EV_P_ struct ev_periodic *w)
1001	{	1193	{
1002	if (ev_is_active (w))	1194	if (ev_is_active (w))
1003	return;	1195	return;
1004		1196
1005	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.));
1006		1198
1007	/* 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 */
1008	if (w->interval)	1200	if (w->interval)
1009	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;
1010		1202
1011	ev_start ((W)w, ++periodiccnt);	1203	ev_start (EV_A_ (W)w, ++periodiccnt);
1012	array_needsize (periodics, periodicmax, periodiccnt, );	1204	array_needsize (periodics, periodicmax, periodiccnt, );
1013	periodics [periodiccnt - 1] = w;	1205	periodics [periodiccnt - 1] = w;
1014	upheap ((WT *)periodics, periodiccnt - 1);	1206	upheap ((WT *)periodics, periodiccnt - 1);
1015	}
1016		1207
		1208	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1209	}
		1210
1017	void	1211	void
1018	ev_periodic_stop (struct ev_periodic *w)	1212	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1019	{	1213	{
1020	ev_clear_pending ((W)w);	1214	ev_clear_pending (EV_A_ (W)w);
1021	if (!ev_is_active (w))	1215	if (!ev_is_active (w))
1022	return;	1216	return;
1023		1217
		1218	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1219
1024	if (w->active < periodiccnt--)	1220	if (((W)w)->active < periodiccnt--)
1025	{	1221	{
1026	periodics [w->active - 1] = periodics [periodiccnt];	1222	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1027	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1223	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1028	}	1224	}
1029		1225
1030	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);
1031	}	1293	}
1032		1294
1033	#ifndef SA_RESTART	1295	#ifndef SA_RESTART
1034	# define SA_RESTART 0	1296	# define SA_RESTART 0
1035	#endif	1297	#endif
1036		1298
1037	void	1299	void
1038	ev_signal_start (struct ev_signal *w)	1300	ev_signal_start (EV_P_ struct ev_signal *w)
1039	{	1301	{
		1302	#if EV_MULTIPLICITY
		1303	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1304	#endif
1040	if (ev_is_active (w))	1305	if (ev_is_active (w))
1041	return;	1306	return;
1042		1307
1043	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));
1044		1309
1045	ev_start ((W)w, 1);	1310	ev_start (EV_A_ (W)w, 1);
1046	array_needsize (signals, signalmax, w->signum, signals_init);	1311	array_needsize (signals, signalmax, w->signum, signals_init);
1047	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1312	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1048		1313
1049	if (!w->next)	1314	if (!((WL)w)->next)
1050	{	1315	{
1051	struct sigaction sa;	1316	struct sigaction sa;
1052	sa.sa_handler = sighandler;	1317	sa.sa_handler = sighandler;
1053	sigfillset (&sa.sa_mask);	1318	sigfillset (&sa.sa_mask);
1054	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 */
1055	sigaction (w->signum, &sa, 0);	1320	sigaction (w->signum, &sa, 0);
1056	}	1321	}
1057	}	1322	}
1058		1323
1059	void	1324	void
1060	ev_signal_stop (struct ev_signal *w)	1325	ev_signal_stop (EV_P_ struct ev_signal *w)
1061	{	1326	{
1062	ev_clear_pending ((W)w);	1327	ev_clear_pending (EV_A_ (W)w);
1063	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
1064	return;	1329	return;
1065		1330
1066	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1331	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1067	ev_stop ((W)w);	1332	ev_stop (EV_A_ (W)w);
1068		1333
1069	if (!signals [w->signum - 1].head)	1334	if (!signals [w->signum - 1].head)
1070	signal (w->signum, SIG_DFL);	1335	signal (w->signum, SIG_DFL);
1071	}	1336	}
1072		1337
1073	void	1338	void
1074	ev_idle_start (struct ev_idle *w)	1339	ev_child_start (EV_P_ struct ev_child *w)
1075	{	1340	{
		1341	#if EV_MULTIPLICITY
		1342	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1343	#endif
1076	if (ev_is_active (w))	1344	if (ev_is_active (w))
1077	return;	1345	return;
1078		1346
1079	ev_start ((W)w, ++idlecnt);	1347	ev_start (EV_A_ (W)w, 1);
1080	array_needsize (idles, idlemax, idlecnt, );	1348	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1081	idles [idlecnt - 1] = w;
1082	}	1349	}
1083		1350
1084	void	1351	void
1085	ev_idle_stop (struct ev_idle *w)	1352	ev_child_stop (EV_P_ struct ev_child *w)
1086	{	1353	{
1087	ev_clear_pending ((W)w);	1354	ev_clear_pending (EV_A_ (W)w);
1088	if (ev_is_active (w))	1355	if (ev_is_active (w))
1089	return;	1356	return;
1090		1357
1091	idles [w->active - 1] = idles [--idlecnt];
1092	ev_stop ((W)w);
1093	}
1094
1095	void
1096	ev_prepare_start (struct ev_prepare *w)
1097	{
1098	if (ev_is_active (w))
1099	return;
1100
1101	ev_start ((W)w, ++preparecnt);
1102	array_needsize (prepares, preparemax, preparecnt, );
1103	prepares [preparecnt - 1] = w;
1104	}
1105
1106	void
1107	ev_prepare_stop (struct ev_prepare *w)
1108	{
1109	ev_clear_pending ((W)w);
1110	if (ev_is_active (w))
1111	return;
1112
1113	prepares [w->active - 1] = prepares [--preparecnt];
1114	ev_stop ((W)w);
1115	}
1116
1117	void
1118	ev_check_start (struct ev_check *w)
1119	{
1120	if (ev_is_active (w))
1121	return;
1122
1123	ev_start ((W)w, ++checkcnt);
1124	array_needsize (checks, checkmax, checkcnt, );
1125	checks [checkcnt - 1] = w;
1126	}
1127
1128	void
1129	ev_check_stop (struct ev_check *w)
1130	{
1131	ev_clear_pending ((W)w);
1132	if (ev_is_active (w))
1133	return;
1134
1135	checks [w->active - 1] = checks [--checkcnt];
1136	ev_stop ((W)w);
1137	}
1138
1139	void
1140	ev_child_start (struct ev_child *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start ((W)w, 1);
1146	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1147	}
1148
1149	void
1150	ev_child_stop (struct ev_child *w)
1151	{
1152	ev_clear_pending ((W)w);
1153	if (ev_is_active (w))
1154	return;
1155
1156	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1358	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1157	ev_stop ((W)w);	1359	ev_stop (EV_A_ (W)w);
1158	}	1360	}
1159		1361
1160	/*****************************************************************************/	1362	/*****************************************************************************/
1161		1363
1162	struct ev_once	1364	struct ev_once
…		…
1166	void (*cb)(int revents, void *arg);	1368	void (*cb)(int revents, void *arg);
1167	void *arg;	1369	void *arg;
1168	};	1370	};
1169		1371
1170	static void	1372	static void
1171	once_cb (struct ev_once *once, int revents)	1373	once_cb (EV_P_ struct ev_once *once, int revents)
1172	{	1374	{
1173	void (*cb)(int revents, void *arg) = once->cb;	1375	void (*cb)(int revents, void *arg) = once->cb;
1174	void *arg = once->arg;	1376	void *arg = once->arg;
1175		1377
1176	ev_io_stop (&once->io);	1378	ev_io_stop (EV_A_ &once->io);
1177	ev_timer_stop (&once->to);	1379	ev_timer_stop (EV_A_ &once->to);
1178	free (once);	1380	free (once);
1179		1381
1180	cb (revents, arg);	1382	cb (revents, arg);
1181	}	1383	}
1182		1384
1183	static void	1385	static void
1184	once_cb_io (struct ev_io *w, int revents)	1386	once_cb_io (EV_P_ struct ev_io *w, int revents)
1185	{	1387	{
1186	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);
1187	}	1389	}
1188		1390
1189	static void	1391	static void
1190	once_cb_to (struct ev_timer *w, int revents)	1392	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1191	{	1393	{
1192	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);
1193	}	1395	}
1194		1396
1195	void	1397	void
1196	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)
1197	{	1399	{
1198	struct ev_once *once = malloc (sizeof (struct ev_once));	1400	struct ev_once *once = malloc (sizeof (struct ev_once));
1199		1401
1200	if (!once)	1402	if (!once)
1201	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1403	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1206		1408
1207	ev_watcher_init (&once->io, once_cb_io);	1409	ev_watcher_init (&once->io, once_cb_io);
1208	if (fd >= 0)	1410	if (fd >= 0)
1209	{	1411	{
1210	ev_io_set (&once->io, fd, events);	1412	ev_io_set (&once->io, fd, events);
1211	ev_io_start (&once->io);	1413	ev_io_start (EV_A_ &once->io);
1212	}	1414	}
1213		1415
1214	ev_watcher_init (&once->to, once_cb_to);	1416	ev_watcher_init (&once->to, once_cb_to);
1215	if (timeout >= 0.)	1417	if (timeout >= 0.)
1216	{	1418	{
1217	ev_timer_set (&once->to, timeout, 0.);	1419	ev_timer_set (&once->to, timeout, 0.);
1218	ev_timer_start (&once->to);	1420	ev_timer_start (EV_A_ &once->to);
1219	}	1421	}
1220	}	1422	}
1221	}	1423	}
1222		1424
1223	/*****************************************************************************/
1224
1225	#if 0
1226
1227	struct ev_io wio;
1228
1229	static void
1230	sin_cb (struct ev_io *w, int revents)
1231	{
1232	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1233	}
1234
1235	static void
1236	ocb (struct ev_timer *w, int revents)
1237	{
1238	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1239	ev_timer_stop (w);
1240	ev_timer_start (w);
1241	}
1242
1243	static void
1244	scb (struct ev_signal *w, int revents)
1245	{
1246	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1247	ev_io_stop (&wio);
1248	ev_io_start (&wio);
1249	}
1250
1251	static void
1252	gcb (struct ev_signal *w, int revents)
1253	{
1254	fprintf (stderr, "generic %x\n", revents);
1255
1256	}
1257
1258	int main (void)
1259	{
1260	ev_init (0);
1261
1262	ev_io_init (&wio, sin_cb, 0, EV_READ);
1263	ev_io_start (&wio);
1264
1265	struct ev_timer t[10000];
1266
1267	#if 0
1268	int i;
1269	for (i = 0; i < 10000; ++i)
1270	{
1271	struct ev_timer *w = t + i;
1272	ev_watcher_init (w, ocb, i);
1273	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1274	ev_timer_start (w);
1275	if (drand48 () < 0.5)
1276	ev_timer_stop (w);
1277	}
1278	#endif
1279
1280	struct ev_timer t1;
1281	ev_timer_init (&t1, ocb, 5, 10);
1282	ev_timer_start (&t1);
1283
1284	struct ev_signal sig;
1285	ev_signal_init (&sig, scb, SIGQUIT);
1286	ev_signal_start (&sig);
1287
1288	struct ev_check cw;
1289	ev_check_init (&cw, gcb);
1290	ev_check_start (&cw);
1291
1292	struct ev_idle iw;
1293	ev_idle_init (&iw, gcb);
1294	ev_idle_start (&iw);
1295
1296	ev_loop (0);
1297
1298	return 0;
1299	}
1300
1301	#endif
1302
1303
1304
1305

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