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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 1.64 by root, Sun Nov 4 23:14:11 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) \
…		…
173	cur = newcnt; \	234	cur = newcnt; \
174	}	235	}
175		236
176	/*****************************************************************************/	237	/*****************************************************************************/
177		238
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
188	static void	239	static void
189	anfds_init (ANFD *base, int count)	240	anfds_init (ANFD *base, int count)
190	{	241	{
191	while (count--)	242	while (count--)
192	{	243	{
…		…
196		247
197	++base;	248	++base;
198	}	249	}
199	}	250	}
200		251
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	252	static void
211	event (W w, int events)	253	event (EV_P_ W w, int events)
212	{	254	{
213	if (w->pending)	255	if (w->pending)
214	{	256	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	257	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;	258	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	263	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	264	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	265	}
224		266
225	static void	267	static void
226	queue_events (W *events, int eventcnt, int type)	268	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	269	{
228	int i;	270	int i;
229		271
230	for (i = 0; i < eventcnt; ++i)	272	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	273	event (EV_A_ events [i], type);
232	}	274	}
233		275
234	static void	276	static void
235	fd_event (int fd, int events)	277	fd_event (EV_P_ int fd, int events)
236	{	278	{
237	ANFD *anfd = anfds + fd;	279	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	280	struct ev_io *w;
239		281
240	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	282	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	283	{
242	int ev = w->events & events;	284	int ev = w->events & events;
243		285
244	if (ev)	286	if (ev)
245	event ((W)w, ev);	287	event (EV_A_ (W)w, ev);
246	}	288	}
247	}	289	}
248		290
249	/*****************************************************************************/	291	/*****************************************************************************/
250		292
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	293	static void
255	fd_reify (void)	294	fd_reify (EV_P)
256	{	295	{
257	int i;	296	int i;
258		297
259	for (i = 0; i < fdchangecnt; ++i)	298	for (i = 0; i < fdchangecnt; ++i)
260	{	299	{
…		…
267	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	306	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	307	events |= w->events;
269		308
270	anfd->reify = 0;	309	anfd->reify = 0;
271		310
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	311	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	312	anfd->events = events;
276	}
277	}	313	}
278		314
279	fdchangecnt = 0;	315	fdchangecnt = 0;
280	}	316	}
281		317
282	static void	318	static void
283	fd_change (int fd)	319	fd_change (EV_P_ int fd)
284	{	320	{
285	if (anfds [fd].reify || fdchangecnt < 0)	321	if (anfds [fd].reify || fdchangecnt < 0)
286	return;	322	return;
287		323
288	anfds [fd].reify = 1;	324	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	327	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	328	fdchanges [fdchangecnt - 1] = fd;
293	}	329	}
294		330
295	static void	331	static void
296	fd_kill (int fd)	332	fd_kill (EV_P_ int fd)
297	{	333	{
298	struct ev_io *w;	334	struct ev_io *w;
299		335
300	while ((w = (struct ev_io *)anfds [fd].head))	336	while ((w = (struct ev_io *)anfds [fd].head))
301	{	337	{
302	ev_io_stop (w);	338	ev_io_stop (EV_A_ w);
303	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	339	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
304	}	340	}
305	}	341	}
306		342
307	/* called on EBADF to verify fds */	343	/* called on EBADF to verify fds */
308	static void	344	static void
309	fd_ebadf (void)	345	fd_ebadf (EV_P)
310	{	346	{
311	int fd;	347	int fd;
312		348
313	for (fd = 0; fd < anfdmax; ++fd)	349	for (fd = 0; fd < anfdmax; ++fd)
314	if (anfds [fd].events)	350	if (anfds [fd].events)
315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	351	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
316	fd_kill (fd);	352	fd_kill (EV_A_ fd);
317	}	353	}
318		354
319	/* called on ENOMEM in select/poll to kill some fds and retry */	355	/* called on ENOMEM in select/poll to kill some fds and retry */
320	static void	356	static void
321	fd_enomem (void)	357	fd_enomem (EV_P)
322	{	358	{
323	int fd = anfdmax;	359	int fd;
324		360
325	while (fd--)	361	for (fd = anfdmax; fd--; )
326	if (anfds [fd].events)	362	if (anfds [fd].events)
327	{	363	{
328	close (fd);	364	close (fd);
329	fd_kill (fd);	365	fd_kill (EV_A_ fd);
330	return;	366	return;
331	}	367	}
332	}	368	}
333		369
		370	/* susually called after fork if method needs to re-arm all fds from scratch */
		371	static void
		372	fd_rearm_all (EV_P)
		373	{
		374	int fd;
		375
		376	/* this should be highly optimised to not do anything but set a flag */
		377	for (fd = 0; fd < anfdmax; ++fd)
		378	if (anfds [fd].events)
		379	{
		380	anfds [fd].events = 0;
		381	fd_change (EV_A_ fd);
		382	}
		383	}
		384
334	/*****************************************************************************/	385	/*****************************************************************************/
335		386
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	387	static void
343	upheap (WT *timers, int k)	388	upheap (WT *heap, int k)
344	{	389	{
345	WT w = timers [k];	390	WT w = heap [k];
346		391
347	while (k && timers [k >> 1]->at > w->at)	392	while (k && heap [k >> 1]->at > w->at)
348	{	393	{
349	timers [k] = timers [k >> 1];	394	heap [k] = heap [k >> 1];
350	timers [k]->active = k + 1;	395	((W)heap [k])->active = k + 1;
351	k >>= 1;	396	k >>= 1;
352	}	397	}
353		398
354	timers [k] = w;	399	heap [k] = w;
355	timers [k]->active = k + 1;	400	((W)heap [k])->active = k + 1;
356		401
357	}	402	}
358		403
359	static void	404	static void
360	downheap (WT *timers, int N, int k)	405	downheap (WT *heap, int N, int k)
361	{	406	{
362	WT w = timers [k];	407	WT w = heap [k];
363		408
364	while (k < (N >> 1))	409	while (k < (N >> 1))
365	{	410	{
366	int j = k << 1;	411	int j = k << 1;
367		412
368	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	413	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369	++j;	414	++j;
370		415
371	if (w->at <= timers [j]->at)	416	if (w->at <= heap [j]->at)
372	break;	417	break;
373		418
374	timers [k] = timers [j];	419	heap [k] = heap [j];
375	timers [k]->active = k + 1;	420	((W)heap [k])->active = k + 1;
376	k = j;	421	k = j;
377	}	422	}
378		423
379	timers [k] = w;	424	heap [k] = w;
380	timers [k]->active = k + 1;	425	((W)heap [k])->active = k + 1;
381	}	426	}
382		427
383	/*****************************************************************************/	428	/*****************************************************************************/
384		429
385	typedef struct	430	typedef struct
…		…
420	errno = old_errno;	465	errno = old_errno;
421	}	466	}
422	}	467	}
423		468
424	static void	469	static void
425	sigcb (struct ev_io *iow, int revents)	470	sigcb (EV_P_ struct ev_io *iow, int revents)
426	{	471	{
427	struct ev_watcher_list *w;	472	struct ev_watcher_list *w;
428	int signum;	473	int signum;
429		474
430	read (sigpipe [0], &revents, 1);	475	read (sigpipe [0], &revents, 1);
…		…
434	if (signals [signum].gotsig)	479	if (signals [signum].gotsig)
435	{	480	{
436	signals [signum].gotsig = 0;	481	signals [signum].gotsig = 0;
437		482
438	for (w = signals [signum].head; w; w = w->next)	483	for (w = signals [signum].head; w; w = w->next)
439	event ((W)w, EV_SIGNAL);	484	event (EV_A_ (W)w, EV_SIGNAL);
440	}	485	}
441	}	486	}
442		487
443	static void	488	static void
444	siginit (void)	489	siginit (EV_P)
445	{	490	{
446	#ifndef WIN32	491	#ifndef WIN32
447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	492	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	493	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449		494
…		…
451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	496	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	497	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453	#endif	498	#endif
454		499
455	ev_io_set (&sigev, sigpipe [0], EV_READ);	500	ev_io_set (&sigev, sigpipe [0], EV_READ);
456	ev_io_start (&sigev);	501	ev_io_start (EV_A_ &sigev);
		502	ev_unref (EV_A); /* child watcher should not keep loop alive */
457	}	503	}
458		504
459	/*****************************************************************************/	505	/*****************************************************************************/
460		506
461	static struct ev_idle **idles;	507	#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		508
472	static struct ev_child *childs [PID_HASHSIZE];	509	static struct ev_child *childs [PID_HASHSIZE];
473	static struct ev_signal childev;	510	static struct ev_signal childev;
474		511
475	#ifndef WIN32
476
477	#ifndef WCONTINUED	512	#ifndef WCONTINUED
478	# define WCONTINUED 0	513	# define WCONTINUED 0
479	#endif	514	#endif
480		515
481	static void	516	static void
482	child_reap (struct ev_signal *sw, int chain, int pid, int status)	517	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
483	{	518	{
484	struct ev_child *w;	519	struct ev_child *w;
485		520
486	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	521	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)	522	if (w->pid == pid || !w->pid)
488	{	523	{
489	w->priority = sw->priority; /* need to do it *now* */	524	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
490	w->rpid = pid;	525	w->rpid = pid;
491	w->rstatus = status;	526	w->rstatus = status;
492	event ((W)w, EV_CHILD);	527	event (EV_A_ (W)w, EV_CHILD);
493	}	528	}
494	}	529	}
495		530
496	static void	531	static void
497	childcb (struct ev_signal *sw, int revents)	532	childcb (EV_P_ struct ev_signal *sw, int revents)
498	{	533	{
499	int pid, status;	534	int pid, status;
500		535
501	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	536	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
502	{	537	{
503	/* make sure we are called again until all childs have been reaped */	538	/* make sure we are called again until all childs have been reaped */
504	event ((W)sw, EV_SIGNAL);	539	event (EV_A_ (W)sw, EV_SIGNAL);
505		540
506	child_reap (sw, pid, pid, status);	541	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 */	542	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
508	}	543	}
509	}	544	}
510		545
511	#endif	546	#endif
512		547
…		…
537	return EV_VERSION_MINOR;	572	return EV_VERSION_MINOR;
538	}	573	}
539		574
540	/* return true if we are running with elevated privileges and should ignore env variables */	575	/* return true if we are running with elevated privileges and should ignore env variables */
541	static int	576	static int
542	enable_secure ()	577	enable_secure (void)
543	{	578	{
544	#ifdef WIN32	579	#ifdef WIN32
545	return 0;	580	return 0;
546	#else	581	#else
547	return getuid () != geteuid ()	582	return getuid () != geteuid ()
548	|| getgid () != getegid ();	583	|| getgid () != getegid ();
549	#endif	584	#endif
550	}	585	}
551		586
552	int ev_init (int methods)	587	int
		588	ev_method (EV_P)
553	{	589	{
		590	return method;
		591	}
		592
		593	static void
		594	loop_init (EV_P_ int methods)
		595	{
554	if (!ev_method)	596	if (!method)
555	{	597	{
556	#if EV_USE_MONOTONIC	598	#if EV_USE_MONOTONIC
557	{	599	{
558	struct timespec ts;	600	struct timespec ts;
559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560	have_monotonic = 1;	602	have_monotonic = 1;
561	}	603	}
562	#endif	604	#endif
563		605
564	ev_now = ev_time ();	606	rt_now = ev_time ();
565	now = get_clock ();	607	mn_now = get_clock ();
566	now_floor = now;	608	now_floor = mn_now;
567	diff = ev_now - now;	609	rtmn_diff = rt_now - mn_now;
568
569	if (pipe (sigpipe))
570	return 0;
571		610
572	if (methods == EVMETHOD_AUTO)	611	if (methods == EVMETHOD_AUTO)
573	if (!enable_secure () && getenv ("LIBEV_METHODS"))	612	if (!enable_secure () && getenv ("LIBEV_METHODS"))
574	methods = atoi (getenv ("LIBEV_METHODS"));	613	methods = atoi (getenv ("LIBEV_METHODS"));
575	else	614	else
576	methods = EVMETHOD_ANY;	615	methods = EVMETHOD_ANY;
577		616
578	ev_method = 0;	617	method = 0;
		618	#if EV_USE_WIN32
		619	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		620	#endif
579	#if EV_USE_KQUEUE	621	#if EV_USE_KQUEUE
580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
581	#endif	623	#endif
582	#if EV_USE_EPOLL	624	#if EV_USE_EPOLL
583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
584	#endif	626	#endif
585	#if EV_USE_POLL	627	#if EV_USE_POLL
586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
587	#endif	629	#endif
588	#if EV_USE_SELECT	630	#if EV_USE_SELECT
589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
590	#endif	632	#endif
		633	}
		634	}
591		635
		636	void
		637	loop_destroy (EV_P)
		638	{
		639	#if EV_USE_WIN32
		640	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		641	#endif
		642	#if EV_USE_KQUEUE
		643	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		644	#endif
		645	#if EV_USE_EPOLL
		646	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		647	#endif
		648	#if EV_USE_POLL
		649	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		650	#endif
		651	#if EV_USE_SELECT
		652	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		653	#endif
		654
		655	method = 0;
		656	/*TODO*/
		657	}
		658
		659	void
		660	loop_fork (EV_P)
		661	{
		662	/*TODO*/
		663	#if EV_USE_EPOLL
		664	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		665	#endif
		666	#if EV_USE_KQUEUE
		667	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		668	#endif
		669	}
		670
		671	#if EV_MULTIPLICITY
		672	struct ev_loop *
		673	ev_loop_new (int methods)
		674	{
		675	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		676
		677	loop_init (EV_A_ methods);
		678
		679	if (ev_method (EV_A))
		680	return loop;
		681
		682	return 0;
		683	}
		684
		685	void
		686	ev_loop_destroy (EV_P)
		687	{
		688	loop_destroy (EV_A);
		689	free (loop);
		690	}
		691
		692	void
		693	ev_loop_fork (EV_P)
		694	{
		695	loop_fork (EV_A);
		696	}
		697
		698	#endif
		699
		700	#if EV_MULTIPLICITY
		701	struct ev_loop default_loop_struct;
		702	static struct ev_loop *default_loop;
		703
		704	struct ev_loop *
		705	#else
		706	static int default_loop;
		707
		708	int
		709	#endif
		710	ev_default_loop (int methods)
		711	{
		712	if (sigpipe [0] == sigpipe [1])
		713	if (pipe (sigpipe))
		714	return 0;
		715
		716	if (!default_loop)
		717	{
		718	#if EV_MULTIPLICITY
		719	struct ev_loop *loop = default_loop = &default_loop_struct;
		720	#else
		721	default_loop = 1;
		722	#endif
		723
		724	loop_init (EV_A_ methods);
		725
592	if (ev_method)	726	if (ev_method (EV_A))
593	{	727	{
594	ev_watcher_init (&sigev, sigcb);	728	ev_watcher_init (&sigev, sigcb);
595	ev_set_priority (&sigev, EV_MAXPRI);	729	ev_set_priority (&sigev, EV_MAXPRI);
596	siginit ();	730	siginit (EV_A);
597		731
598	#ifndef WIN32	732	#ifndef WIN32
599	ev_signal_init (&childev, childcb, SIGCHLD);	733	ev_signal_init (&childev, childcb, SIGCHLD);
600	ev_set_priority (&childev, EV_MAXPRI);	734	ev_set_priority (&childev, EV_MAXPRI);
601	ev_signal_start (&childev);	735	ev_signal_start (EV_A_ &childev);
		736	ev_unref (EV_A); /* child watcher should not keep loop alive */
602	#endif	737	#endif
603	}	738	}
		739	else
		740	default_loop = 0;
604	}	741	}
605		742
606	return ev_method;	743	return default_loop;
607	}	744	}
608		745
609	/*****************************************************************************/
610
611	void	746	void
612	ev_fork_prepare (void)	747	ev_default_destroy (void)
613	{	748	{
614	/* nop */	749	#if EV_MULTIPLICITY
615	}	750	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	751	#endif
630		752
		753	ev_ref (EV_A); /* child watcher */
		754	ev_signal_stop (EV_A_ &childev);
		755
		756	ev_ref (EV_A); /* signal watcher */
631	ev_io_stop (&sigev);	757	ev_io_stop (EV_A_ &sigev);
		758
		759	close (sigpipe [0]); sigpipe [0] = 0;
		760	close (sigpipe [1]); sigpipe [1] = 0;
		761
		762	loop_destroy (EV_A);
		763	}
		764
		765	void
		766	ev_default_fork (void)
		767	{
		768	#if EV_MULTIPLICITY
		769	struct ev_loop *loop = default_loop;
		770	#endif
		771
		772	loop_fork (EV_A);
		773
		774	ev_io_stop (EV_A_ &sigev);
632	close (sigpipe [0]);	775	close (sigpipe [0]);
633	close (sigpipe [1]);	776	close (sigpipe [1]);
634	pipe (sigpipe);	777	pipe (sigpipe);
		778
		779	ev_ref (EV_A); /* signal watcher */
635	siginit ();	780	siginit (EV_A);
636	}	781	}
637		782
638	/*****************************************************************************/	783	/*****************************************************************************/
639		784
640	static void	785	static void
641	call_pending (void)	786	call_pending (EV_P)
642	{	787	{
643	int pri;	788	int pri;
644		789
645	for (pri = NUMPRI; pri--; )	790	for (pri = NUMPRI; pri--; )
646	while (pendingcnt [pri])	791	while (pendingcnt [pri])
…		…
648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649		794
650	if (p->w)	795	if (p->w)
651	{	796	{
652	p->w->pending = 0;	797	p->w->pending = 0;
653	p->w->cb (p->w, p->events);	798
		799	(*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
654	}	800	}
655	}	801	}
656	}	802	}
657		803
658	static void	804	static void
659	timers_reify (void)	805	timers_reify (EV_P)
660	{	806	{
661	while (timercnt && timers [0]->at <= now)	807	while (timercnt && ((WT)timers [0])->at <= mn_now)
662	{	808	{
663	struct ev_timer *w = timers [0];	809	struct ev_timer *w = timers [0];
		810
		811	assert (("inactive timer on timer heap detected", ev_is_active (w)));
664		812
665	/* first reschedule or stop timer */	813	/* first reschedule or stop timer */
666	if (w->repeat)	814	if (w->repeat)
667	{	815	{
668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	816	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
669	w->at = now + w->repeat;	817	((WT)w)->at = mn_now + w->repeat;
670	downheap ((WT *)timers, timercnt, 0);	818	downheap ((WT *)timers, timercnt, 0);
671	}	819	}
672	else	820	else
673	ev_timer_stop (w); /* nonrepeating: stop timer */	821	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674		822
675	event ((W)w, EV_TIMEOUT);	823	event (EV_A_ (W)w, EV_TIMEOUT);
676	}	824	}
677	}	825	}
678		826
679	static void	827	static void
680	periodics_reify (void)	828	periodics_reify (EV_P)
681	{	829	{
682	while (periodiccnt && periodics [0]->at <= ev_now)	830	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
683	{	831	{
684	struct ev_periodic *w = periodics [0];	832	struct ev_periodic *w = periodics [0];
		833
		834	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
685		835
686	/* first reschedule or stop timer */	836	/* first reschedule or stop timer */
687	if (w->interval)	837	if (w->interval)
688	{	838	{
689	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	839	((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));	840	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
691	downheap ((WT *)periodics, periodiccnt, 0);	841	downheap ((WT *)periodics, periodiccnt, 0);
692	}	842	}
693	else	843	else
694	ev_periodic_stop (w); /* nonrepeating: stop timer */	844	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695		845
696	event ((W)w, EV_PERIODIC);	846	event (EV_A_ (W)w, EV_PERIODIC);
697	}	847	}
698	}	848	}
699		849
700	static void	850	static void
701	periodics_reschedule (ev_tstamp diff)	851	periodics_reschedule (EV_P)
702	{	852	{
703	int i;	853	int i;
704		854
705	/* adjust periodics after time jump */	855	/* adjust periodics after time jump */
706	for (i = 0; i < periodiccnt; ++i)	856	for (i = 0; i < periodiccnt; ++i)
707	{	857	{
708	struct ev_periodic *w = periodics [i];	858	struct ev_periodic *w = periodics [i];
709		859
710	if (w->interval)	860	if (w->interval)
711	{	861	{
712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	862	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
713		863
714	if (fabs (diff) >= 1e-4)	864	if (fabs (diff) >= 1e-4)
715	{	865	{
716	ev_periodic_stop (w);	866	ev_periodic_stop (EV_A_ w);
717	ev_periodic_start (w);	867	ev_periodic_start (EV_A_ w);
718		868
719	i = 0; /* restart loop, inefficient, but time jumps should be rare */	869	i = 0; /* restart loop, inefficient, but time jumps should be rare */
720	}	870	}
721	}	871	}
722	}	872	}
723	}	873	}
724		874
725	static int	875	inline int
726	time_update_monotonic (void)	876	time_update_monotonic (EV_P)
727	{	877	{
728	now = get_clock ();	878	mn_now = get_clock ();
729		879
730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	880	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731	{	881	{
732	ev_now = now + diff;	882	rt_now = rtmn_diff + mn_now;
733	return 0;	883	return 0;
734	}	884	}
735	else	885	else
736	{	886	{
737	now_floor = now;	887	now_floor = mn_now;
738	ev_now = ev_time ();	888	rt_now = ev_time ();
739	return 1;	889	return 1;
740	}	890	}
741	}	891	}
742		892
743	static void	893	static void
744	time_update (void)	894	time_update (EV_P)
745	{	895	{
746	int i;	896	int i;
747		897
748	#if EV_USE_MONOTONIC	898	#if EV_USE_MONOTONIC
749	if (expect_true (have_monotonic))	899	if (expect_true (have_monotonic))
750	{	900	{
751	if (time_update_monotonic ())	901	if (time_update_monotonic (EV_A))
752	{	902	{
753	ev_tstamp odiff = diff;	903	ev_tstamp odiff = rtmn_diff;
754		904
755	for (i = 4; --i; ) /* loop a few times, before making important decisions */	905	for (i = 4; --i; ) /* loop a few times, before making important decisions */
756	{	906	{
757	diff = ev_now - now;	907	rtmn_diff = rt_now - mn_now;
758		908
759	if (fabs (odiff - diff) < MIN_TIMEJUMP)	909	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760	return; /* all is well */	910	return; /* all is well */
761		911
762	ev_now = ev_time ();	912	rt_now = ev_time ();
763	now = get_clock ();	913	mn_now = get_clock ();
764	now_floor = now;	914	now_floor = mn_now;
765	}	915	}
766		916
767	periodics_reschedule (diff - odiff);	917	periodics_reschedule (EV_A);
768	/* no timer adjustment, as the monotonic clock doesn't jump */	918	/* no timer adjustment, as the monotonic clock doesn't jump */
		919	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769	}	920	}
770	}	921	}
771	else	922	else
772	#endif	923	#endif
773	{	924	{
774	ev_now = ev_time ();	925	rt_now = ev_time ();
775		926
776	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	927	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777	{	928	{
778	periodics_reschedule (ev_now - now);	929	periodics_reschedule (EV_A);
779		930
780	/* adjust timers. this is easy, as the offset is the same for all */	931	/* adjust timers. this is easy, as the offset is the same for all */
781	for (i = 0; i < timercnt; ++i)	932	for (i = 0; i < timercnt; ++i)
782	timers [i]->at += diff;	933	((WT)timers [i])->at += rt_now - mn_now;
783	}	934	}
784		935
785	now = ev_now;	936	mn_now = rt_now;
786	}	937	}
787	}	938	}
788		939
789	int ev_loop_done;	940	void
		941	ev_ref (EV_P)
		942	{
		943	++activecnt;
		944	}
790		945
		946	void
		947	ev_unref (EV_P)
		948	{
		949	--activecnt;
		950	}
		951
		952	static int loop_done;
		953
		954	void
791	void ev_loop (int flags)	955	ev_loop (EV_P_ int flags)
792	{	956	{
793	double block;	957	double block;
794	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	958	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
795		959
796	do	960	do
797	{	961	{
798	/* queue check watchers (and execute them) */	962	/* queue check watchers (and execute them) */
799	if (expect_false (preparecnt))	963	if (expect_false (preparecnt))
800	{	964	{
801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	965	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802	call_pending ();	966	call_pending (EV_A);
803	}	967	}
804		968
805	/* update fd-related kernel structures */	969	/* update fd-related kernel structures */
806	fd_reify ();	970	fd_reify (EV_A);
807		971
808	/* calculate blocking time */	972	/* calculate blocking time */
809		973
810	/* we only need this for !monotonic clockor timers, but as we basically	974	/* we only need this for !monotonic clockor timers, but as we basically
811	always have timers, we just calculate it always */	975	always have timers, we just calculate it always */
812	#if EV_USE_MONOTONIC	976	#if EV_USE_MONOTONIC
813	if (expect_true (have_monotonic))	977	if (expect_true (have_monotonic))
814	time_update_monotonic ();	978	time_update_monotonic (EV_A);
815	else	979	else
816	#endif	980	#endif
817	{	981	{
818	ev_now = ev_time ();	982	rt_now = ev_time ();
819	now = ev_now;	983	mn_now = rt_now;
820	}	984	}
821		985
822	if (flags & EVLOOP_NONBLOCK || idlecnt)	986	if (flags & EVLOOP_NONBLOCK || idlecnt)
823	block = 0.;	987	block = 0.;
824	else	988	else
825	{	989	{
826	block = MAX_BLOCKTIME;	990	block = MAX_BLOCKTIME;
827		991
828	if (timercnt)	992	if (timercnt)
829	{	993	{
830	ev_tstamp to = timers [0]->at - now + method_fudge;	994	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
831	if (block > to) block = to;	995	if (block > to) block = to;
832	}	996	}
833		997
834	if (periodiccnt)	998	if (periodiccnt)
835	{	999	{
836	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1000	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
837	if (block > to) block = to;	1001	if (block > to) block = to;
838	}	1002	}
839		1003
840	if (block < 0.) block = 0.;	1004	if (block < 0.) block = 0.;
841	}	1005	}
842		1006
843	method_poll (block);	1007	method_poll (EV_A_ block);
844		1008
845	/* update ev_now, do magic */	1009	/* update rt_now, do magic */
846	time_update ();	1010	time_update (EV_A);
847		1011
848	/* queue pending timers and reschedule them */	1012	/* queue pending timers and reschedule them */
849	timers_reify (); /* relative timers called last */	1013	timers_reify (EV_A); /* relative timers called last */
850	periodics_reify (); /* absolute timers called first */	1014	periodics_reify (EV_A); /* absolute timers called first */
851		1015
852	/* queue idle watchers unless io or timers are pending */	1016	/* queue idle watchers unless io or timers are pending */
853	if (!pendingcnt)	1017	if (!pendingcnt)
854	queue_events ((W *)idles, idlecnt, EV_IDLE);	1018	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
855		1019
856	/* queue check watchers, to be executed first */	1020	/* queue check watchers, to be executed first */
857	if (checkcnt)	1021	if (checkcnt)
858	queue_events ((W *)checks, checkcnt, EV_CHECK);	1022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859		1023
860	call_pending ();	1024	call_pending (EV_A);
861	}	1025	}
862	while (!ev_loop_done);	1026	while (activecnt && !loop_done);
863		1027
864	if (ev_loop_done != 2)	1028	if (loop_done != 2)
865	ev_loop_done = 0;	1029	loop_done = 0;
		1030	}
		1031
		1032	void
		1033	ev_unloop (EV_P_ int how)
		1034	{
		1035	loop_done = how;
866	}	1036	}
867		1037
868	/*****************************************************************************/	1038	/*****************************************************************************/
869		1039
870	static void	1040	inline void
871	wlist_add (WL *head, WL elem)	1041	wlist_add (WL *head, WL elem)
872	{	1042	{
873	elem->next = *head;	1043	elem->next = *head;
874	*head = elem;	1044	*head = elem;
875	}	1045	}
876		1046
877	static void	1047	inline void
878	wlist_del (WL *head, WL elem)	1048	wlist_del (WL *head, WL elem)
879	{	1049	{
880	while (*head)	1050	while (*head)
881	{	1051	{
882	if (*head == elem)	1052	if (*head == elem)
…		…
887		1057
888	head = &(*head)->next;	1058	head = &(*head)->next;
889	}	1059	}
890	}	1060	}
891		1061
892	static void	1062	inline void
893	ev_clear_pending (W w)	1063	ev_clear_pending (EV_P_ W w)
894	{	1064	{
895	if (w->pending)	1065	if (w->pending)
896	{	1066	{
897	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1067	pendings [ABSPRI (w)][w->pending - 1].w = 0;
898	w->pending = 0;	1068	w->pending = 0;
899	}	1069	}
900	}	1070	}
901		1071
902	static void	1072	inline void
903	ev_start (W w, int active)	1073	ev_start (EV_P_ W w, int active)
904	{	1074	{
905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1075	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1076	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907		1077
908	w->active = active;	1078	w->active = active;
		1079	ev_ref (EV_A);
909	}	1080	}
910		1081
911	static void	1082	inline void
912	ev_stop (W w)	1083	ev_stop (EV_P_ W w)
913	{	1084	{
		1085	ev_unref (EV_A);
914	w->active = 0;	1086	w->active = 0;
915	}	1087	}
916		1088
917	/*****************************************************************************/	1089	/*****************************************************************************/
918		1090
919	void	1091	void
920	ev_io_start (struct ev_io *w)	1092	ev_io_start (EV_P_ struct ev_io *w)
921	{	1093	{
922	int fd = w->fd;	1094	int fd = w->fd;
923		1095
924	if (ev_is_active (w))	1096	if (ev_is_active (w))
925	return;	1097	return;
926		1098
927	assert (("ev_io_start called with negative fd", fd >= 0));	1099	assert (("ev_io_start called with negative fd", fd >= 0));
928		1100
929	ev_start ((W)w, 1);	1101	ev_start (EV_A_ (W)w, 1);
930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1102	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
931	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1103	wlist_add ((WL *)&anfds[fd].head, (WL)w);
932		1104
933	fd_change (fd);	1105	fd_change (EV_A_ fd);
934	}	1106	}
935		1107
936	void	1108	void
937	ev_io_stop (struct ev_io *w)	1109	ev_io_stop (EV_P_ struct ev_io *w)
938	{	1110	{
939	ev_clear_pending ((W)w);	1111	ev_clear_pending (EV_A_ (W)w);
940	if (!ev_is_active (w))	1112	if (!ev_is_active (w))
941	return;	1113	return;
942		1114
943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1115	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944	ev_stop ((W)w);	1116	ev_stop (EV_A_ (W)w);
945		1117
946	fd_change (w->fd);	1118	fd_change (EV_A_ w->fd);
947	}	1119	}
948		1120
949	void	1121	void
950	ev_timer_start (struct ev_timer *w)	1122	ev_timer_start (EV_P_ struct ev_timer *w)
951	{	1123	{
952	if (ev_is_active (w))	1124	if (ev_is_active (w))
953	return;	1125	return;
954		1126
955	w->at += now;	1127	((WT)w)->at += mn_now;
956		1128
957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1129	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958		1130
959	ev_start ((W)w, ++timercnt);	1131	ev_start (EV_A_ (W)w, ++timercnt);
960	array_needsize (timers, timermax, timercnt, );	1132	array_needsize (timers, timermax, timercnt, );
961	timers [timercnt - 1] = w;	1133	timers [timercnt - 1] = w;
962	upheap ((WT *)timers, timercnt - 1);	1134	upheap ((WT *)timers, timercnt - 1);
963	}
964		1135
		1136	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1137	}
		1138
965	void	1139	void
966	ev_timer_stop (struct ev_timer *w)	1140	ev_timer_stop (EV_P_ struct ev_timer *w)
967	{	1141	{
968	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
969	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
970	return;	1144	return;
971		1145
		1146	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1147
972	if (w->active < timercnt--)	1148	if (((W)w)->active < timercnt--)
973	{	1149	{
974	timers [w->active - 1] = timers [timercnt];	1150	timers [((W)w)->active - 1] = timers [timercnt];
975	downheap ((WT *)timers, timercnt, w->active - 1);	1151	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
976	}	1152	}
977		1153
978	w->at = w->repeat;	1154	((WT)w)->at = w->repeat;
979		1155
980	ev_stop ((W)w);	1156	ev_stop (EV_A_ (W)w);
981	}	1157	}
982		1158
983	void	1159	void
984	ev_timer_again (struct ev_timer *w)	1160	ev_timer_again (EV_P_ struct ev_timer *w)
985	{	1161	{
986	if (ev_is_active (w))	1162	if (ev_is_active (w))
987	{	1163	{
988	if (w->repeat)	1164	if (w->repeat)
989	{	1165	{
990	w->at = now + w->repeat;	1166	((WT)w)->at = mn_now + w->repeat;
991	downheap ((WT *)timers, timercnt, w->active - 1);	1167	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992	}	1168	}
993	else	1169	else
994	ev_timer_stop (w);	1170	ev_timer_stop (EV_A_ w);
995	}	1171	}
996	else if (w->repeat)	1172	else if (w->repeat)
997	ev_timer_start (w);	1173	ev_timer_start (EV_A_ w);
998	}	1174	}
999		1175
1000	void	1176	void
1001	ev_periodic_start (struct ev_periodic *w)	1177	ev_periodic_start (EV_P_ struct ev_periodic *w)
1002	{	1178	{
1003	if (ev_is_active (w))	1179	if (ev_is_active (w))
1004	return;	1180	return;
1005		1181
1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1182	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007		1183
1008	/* this formula differs from the one in periodic_reify because we do not always round up */	1184	/* this formula differs from the one in periodic_reify because we do not always round up */
1009	if (w->interval)	1185	if (w->interval)
1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1186	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1011		1187
1012	ev_start ((W)w, ++periodiccnt);	1188	ev_start (EV_A_ (W)w, ++periodiccnt);
1013	array_needsize (periodics, periodicmax, periodiccnt, );	1189	array_needsize (periodics, periodicmax, periodiccnt, );
1014	periodics [periodiccnt - 1] = w;	1190	periodics [periodiccnt - 1] = w;
1015	upheap ((WT *)periodics, periodiccnt - 1);	1191	upheap ((WT *)periodics, periodiccnt - 1);
1016	}
1017		1192
		1193	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1194	}
		1195
1018	void	1196	void
1019	ev_periodic_stop (struct ev_periodic *w)	1197	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1020	{	1198	{
1021	ev_clear_pending ((W)w);	1199	ev_clear_pending (EV_A_ (W)w);
1022	if (!ev_is_active (w))	1200	if (!ev_is_active (w))
1023	return;	1201	return;
1024		1202
		1203	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1204
1025	if (w->active < periodiccnt--)	1205	if (((W)w)->active < periodiccnt--)
1026	{	1206	{
1027	periodics [w->active - 1] = periodics [periodiccnt];	1207	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1028	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1208	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1029	}	1209	}
1030		1210
1031	ev_stop ((W)w);	1211	ev_stop (EV_A_ (W)w);
		1212	}
		1213
		1214	void
		1215	ev_idle_start (EV_P_ struct ev_idle *w)
		1216	{
		1217	if (ev_is_active (w))
		1218	return;
		1219
		1220	ev_start (EV_A_ (W)w, ++idlecnt);
		1221	array_needsize (idles, idlemax, idlecnt, );
		1222	idles [idlecnt - 1] = w;
		1223	}
		1224
		1225	void
		1226	ev_idle_stop (EV_P_ struct ev_idle *w)
		1227	{
		1228	ev_clear_pending (EV_A_ (W)w);
		1229	if (ev_is_active (w))
		1230	return;
		1231
		1232	idles [((W)w)->active - 1] = idles [--idlecnt];
		1233	ev_stop (EV_A_ (W)w);
		1234	}
		1235
		1236	void
		1237	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1238	{
		1239	if (ev_is_active (w))
		1240	return;
		1241
		1242	ev_start (EV_A_ (W)w, ++preparecnt);
		1243	array_needsize (prepares, preparemax, preparecnt, );
		1244	prepares [preparecnt - 1] = w;
		1245	}
		1246
		1247	void
		1248	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1249	{
		1250	ev_clear_pending (EV_A_ (W)w);
		1251	if (ev_is_active (w))
		1252	return;
		1253
		1254	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1255	ev_stop (EV_A_ (W)w);
		1256	}
		1257
		1258	void
		1259	ev_check_start (EV_P_ struct ev_check *w)
		1260	{
		1261	if (ev_is_active (w))
		1262	return;
		1263
		1264	ev_start (EV_A_ (W)w, ++checkcnt);
		1265	array_needsize (checks, checkmax, checkcnt, );
		1266	checks [checkcnt - 1] = w;
		1267	}
		1268
		1269	void
		1270	ev_check_stop (EV_P_ struct ev_check *w)
		1271	{
		1272	ev_clear_pending (EV_A_ (W)w);
		1273	if (ev_is_active (w))
		1274	return;
		1275
		1276	checks [((W)w)->active - 1] = checks [--checkcnt];
		1277	ev_stop (EV_A_ (W)w);
1032	}	1278	}
1033		1279
1034	#ifndef SA_RESTART	1280	#ifndef SA_RESTART
1035	# define SA_RESTART 0	1281	# define SA_RESTART 0
1036	#endif	1282	#endif
1037		1283
1038	void	1284	void
1039	ev_signal_start (struct ev_signal *w)	1285	ev_signal_start (EV_P_ struct ev_signal *w)
1040	{	1286	{
		1287	#if EV_MULTIPLICITY
		1288	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1289	#endif
1041	if (ev_is_active (w))	1290	if (ev_is_active (w))
1042	return;	1291	return;
1043		1292
1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1293	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045		1294
1046	ev_start ((W)w, 1);	1295	ev_start (EV_A_ (W)w, 1);
1047	array_needsize (signals, signalmax, w->signum, signals_init);	1296	array_needsize (signals, signalmax, w->signum, signals_init);
1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1297	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049		1298
1050	if (!w->next)	1299	if (!((WL)w)->next)
1051	{	1300	{
1052	struct sigaction sa;	1301	struct sigaction sa;
1053	sa.sa_handler = sighandler;	1302	sa.sa_handler = sighandler;
1054	sigfillset (&sa.sa_mask);	1303	sigfillset (&sa.sa_mask);
1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1304	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056	sigaction (w->signum, &sa, 0);	1305	sigaction (w->signum, &sa, 0);
1057	}	1306	}
1058	}	1307	}
1059		1308
1060	void	1309	void
1061	ev_signal_stop (struct ev_signal *w)	1310	ev_signal_stop (EV_P_ struct ev_signal *w)
1062	{	1311	{
1063	ev_clear_pending ((W)w);	1312	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1313	if (!ev_is_active (w))
1065	return;	1314	return;
1066		1315
1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1316	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068	ev_stop ((W)w);	1317	ev_stop (EV_A_ (W)w);
1069		1318
1070	if (!signals [w->signum - 1].head)	1319	if (!signals [w->signum - 1].head)
1071	signal (w->signum, SIG_DFL);	1320	signal (w->signum, SIG_DFL);
1072	}	1321	}
1073		1322
1074	void	1323	void
1075	ev_idle_start (struct ev_idle *w)	1324	ev_child_start (EV_P_ struct ev_child *w)
1076	{	1325	{
		1326	#if EV_MULTIPLICITY
		1327	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1328	#endif
1077	if (ev_is_active (w))	1329	if (ev_is_active (w))
1078	return;	1330	return;
1079		1331
1080	ev_start ((W)w, ++idlecnt);	1332	ev_start (EV_A_ (W)w, 1);
1081	array_needsize (idles, idlemax, idlecnt, );	1333	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1082	idles [idlecnt - 1] = w;
1083	}	1334	}
1084		1335
1085	void	1336	void
1086	ev_idle_stop (struct ev_idle *w)	1337	ev_child_stop (EV_P_ struct ev_child *w)
1087	{	1338	{
1088	ev_clear_pending ((W)w);	1339	ev_clear_pending (EV_A_ (W)w);
1089	if (ev_is_active (w))	1340	if (ev_is_active (w))
1090	return;	1341	return;
1091		1342
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);	1343	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1158	ev_stop ((W)w);	1344	ev_stop (EV_A_ (W)w);
1159	}	1345	}
1160		1346
1161	/*****************************************************************************/	1347	/*****************************************************************************/
1162		1348
1163	struct ev_once	1349	struct ev_once
…		…
1167	void (*cb)(int revents, void *arg);	1353	void (*cb)(int revents, void *arg);
1168	void *arg;	1354	void *arg;
1169	};	1355	};
1170		1356
1171	static void	1357	static void
1172	once_cb (struct ev_once *once, int revents)	1358	once_cb (EV_P_ struct ev_once *once, int revents)
1173	{	1359	{
1174	void (*cb)(int revents, void *arg) = once->cb;	1360	void (*cb)(int revents, void *arg) = once->cb;
1175	void *arg = once->arg;	1361	void *arg = once->arg;
1176		1362
1177	ev_io_stop (&once->io);	1363	ev_io_stop (EV_A_ &once->io);
1178	ev_timer_stop (&once->to);	1364	ev_timer_stop (EV_A_ &once->to);
1179	free (once);	1365	free (once);
1180		1366
1181	cb (revents, arg);	1367	cb (revents, arg);
1182	}	1368	}
1183		1369
1184	static void	1370	static void
1185	once_cb_io (struct ev_io *w, int revents)	1371	once_cb_io (EV_P_ struct ev_io *w, int revents)
1186	{	1372	{
1187	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1373	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1188	}	1374	}
1189		1375
1190	static void	1376	static void
1191	once_cb_to (struct ev_timer *w, int revents)	1377	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1192	{	1378	{
1193	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1379	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1194	}	1380	}
1195		1381
1196	void	1382	void
1197	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1198	{	1384	{
1199	struct ev_once *once = malloc (sizeof (struct ev_once));	1385	struct ev_once *once = malloc (sizeof (struct ev_once));
1200		1386
1201	if (!once)	1387	if (!once)
1202	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1388	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1207		1393
1208	ev_watcher_init (&once->io, once_cb_io);	1394	ev_watcher_init (&once->io, once_cb_io);
1209	if (fd >= 0)	1395	if (fd >= 0)
1210	{	1396	{
1211	ev_io_set (&once->io, fd, events);	1397	ev_io_set (&once->io, fd, events);
1212	ev_io_start (&once->io);	1398	ev_io_start (EV_A_ &once->io);
1213	}	1399	}
1214		1400
1215	ev_watcher_init (&once->to, once_cb_to);	1401	ev_watcher_init (&once->to, once_cb_to);
1216	if (timeout >= 0.)	1402	if (timeout >= 0.)
1217	{	1403	{
1218	ev_timer_set (&once->to, timeout, 0.);	1404	ev_timer_set (&once->to, timeout, 0.);
1219	ev_timer_start (&once->to);	1405	ev_timer_start (EV_A_ &once->to);
1220	}	1406	}
1221	}	1407	}
1222	}	1408	}
1223		1409
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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