[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 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;
…		…
413	{	460	{
414	signals [signum - 1].gotsig = 1;	461	signals [signum - 1].gotsig = 1;
415		462
416	if (!gotsig)	463	if (!gotsig)
417	{	464	{
		465	int old_errno = errno;
418	gotsig = 1;	466	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	467	write (sigpipe [1], &signum, 1);
		468	errno = old_errno;
420	}	469	}
421	}	470	}
422		471
423	static void	472	static void
424	sigcb (struct ev_io *iow, int revents)	473	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	474	{
426	struct ev_signal *w;	475	struct ev_watcher_list *w;
427	int signum;	476	int signum;
428		477
429	read (sigpipe [0], &revents, 1);	478	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	479	gotsig = 0;
431		480
…		…
433	if (signals [signum].gotsig)	482	if (signals [signum].gotsig)
434	{	483	{
435	signals [signum].gotsig = 0;	484	signals [signum].gotsig = 0;
436		485
437	for (w = signals [signum].head; w; w = w->next)	486	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	487	event (EV_A_ (W)w, EV_SIGNAL);
439	}	488	}
440	}	489	}
441		490
442	static void	491	static void
443	siginit (void)	492	siginit (EV_P)
444	{	493	{
445	#ifndef WIN32	494	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		497
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	501	#endif
453		502
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	503	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	504	ev_io_start (EV_A_ &sigev);
		505	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	506	}
457		507
458	/*****************************************************************************/	508	/*****************************************************************************/
459		509
460	static struct ev_idle **idles;	510	#ifndef WIN32
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470		511
471	static struct ev_child *childs [PID_HASHSIZE];	512	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;	513	static struct ev_signal childev;
473		514
474	#ifndef WIN32
475
476	#ifndef WCONTINUED	515	#ifndef WCONTINUED
477	# define WCONTINUED 0	516	# define WCONTINUED 0
478	#endif	517	#endif
479		518
480	static void	519	static void
481	childcb (struct ev_signal *sw, int revents)	520	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	521	{
483	struct ev_child *w;	522	struct ev_child *w;
		523
		524	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		525	if (w->pid == pid \|\| !w->pid)
		526	{
		527	ev_priority (w) = ev_priority (sw); /* need to do it now */
		528	w->rpid = pid;
		529	w->rstatus = status;
		530	event (EV_A_ (W)w, EV_CHILD);
		531	}
		532	}
		533
		534	static void
		535	childcb (EV_P_ struct ev_signal *sw, int revents)
		536	{
484	int pid, status;	537	int pid, status;
485		538
486	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	539	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	540	{
488	if (w->pid == pid \|\| !w->pid)	541	/* make sure we are called again until all childs have been reaped */
489	{	542	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->status = status;	543
491	event ((W)w, EV_CHILD);	544	child_reap (EV_A_ sw, pid, pid, status);
492	}	545	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		546	}
493	}	547	}
494		548
495	#endif	549	#endif
496		550
497	/*****************************************************************************/	551	/*****************************************************************************/
…		…
519	ev_version_minor (void)	573	ev_version_minor (void)
520	{	574	{
521	return EV_VERSION_MINOR;	575	return EV_VERSION_MINOR;
522	}	576	}
523		577
524	/* 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 */
525	static int	579	static int
526	enable_secure ()	580	enable_secure (void)
527	{	581	{
		582	#ifdef WIN32
		583	return 0;
		584	#else
528	return getuid () != geteuid ()	585	return getuid () != geteuid ()
529	\|\| getgid () != getegid ();	586	\|\| getgid () != getegid ();
		587	#endif
530	}	588	}
531		589
532	int ev_init (int methods)	590	int
		591	ev_method (EV_P)
533	{	592	{
		593	return method;
		594	}
		595
		596	static void
		597	loop_init (EV_P_ int methods)
		598	{
534	if (!ev_method)	599	if (!method)
535	{	600	{
536	#if EV_USE_MONOTONIC	601	#if EV_USE_MONOTONIC
537	{	602	{
538	struct timespec ts;	603	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	605	have_monotonic = 1;
541	}	606	}
542	#endif	607	#endif
543		608
544	ev_now = ev_time ();	609	rt_now = ev_time ();
545	now = get_clock ();	610	mn_now = get_clock ();
546	now_floor = now;	611	now_floor = mn_now;
547	diff = ev_now - now;	612	rtmn_diff = rt_now - mn_now;
548
549	if (pipe (sigpipe))
550	return 0;
551		613
552	if (methods == EVMETHOD_AUTO)	614	if (methods == EVMETHOD_AUTO)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))	615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	616	methods = atoi (getenv ("LIBEV_METHODS"));
555	else	617	else
556	methods = EVMETHOD_ANY;	618	methods = EVMETHOD_ANY;
557		619
558	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
559	#if EV_USE_KQUEUE	624	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
561	#endif	626	#endif
562	#if EV_USE_EPOLL	627	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
564	#endif	629	#endif
565	#if EV_USE_POLL	630	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
567	#endif	632	#endif
568	#if EV_USE_SELECT	633	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
570	#endif	635	#endif
		636	}
		637	}
571		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
572	if (ev_method)	741	if (ev_method (EV_A))
573	{	742	{
574	ev_watcher_init (&sigev, sigcb);	743	ev_watcher_init (&sigev, sigcb);
		744	ev_set_priority (&sigev, EV_MAXPRI);
575	siginit ();	745	siginit (EV_A);
576		746
577	#ifndef WIN32	747	#ifndef WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	748	ev_signal_init (&childev, childcb, SIGCHLD);
		749	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	750	ev_signal_start (EV_A_ &childev);
		751	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	752	#endif
581	}	753	}
		754	else
		755	default_loop = 0;
582	}	756	}
583		757
584	return ev_method;	758	return default_loop;
585	}	759	}
586		760
587	/*****************************************************************************/
588
589	void	761	void
590	ev_fork_prepare (void)	762	ev_default_destroy (void)
591	{	763	{
592	/* nop */	764	#if EV_MULTIPLICITY
593	}	765	struct ev_loop *loop = default_loop;
594
595	void
596	ev_fork_parent (void)
597	{
598	/* nop */
599	}
600
601	void
602	ev_fork_child (void)
603	{
604	#if EV_USE_EPOLL
605	if (ev_method == EVMETHOD_EPOLL)
606	epoll_postfork_child ();
607	#endif	766	#endif
608		767
		768	ev_ref (EV_A); /* child watcher */
		769	ev_signal_stop (EV_A_ &childev);
		770
		771	ev_ref (EV_A); /* signal watcher */
609	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);
610	close (sigpipe [0]);	790	close (sigpipe [0]);
611	close (sigpipe [1]);	791	close (sigpipe [1]);
612	pipe (sigpipe);	792	pipe (sigpipe);
		793
		794	ev_ref (EV_A); /* signal watcher */
613	siginit ();	795	siginit (EV_A);
614	}	796	}
615		797
616	/*****************************************************************************/	798	/*****************************************************************************/
617		799
618	static void	800	static void
619	call_pending (void)	801	call_pending (EV_P)
620	{	802	{
621	int pri;	803	int pri;
622		804
623	for (pri = NUMPRI; pri--; )	805	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	806	while (pendingcnt [pri])
…		…
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		809
628	if (p->w)	810	if (p->w)
629	{	811	{
630	p->w->pending = 0;	812	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	813
		814	((void (*)(EV_P_ W, int))p->w->cb) (EV_A_ p->w, p->events);
632	}	815	}
633	}	816	}
634	}	817	}
635		818
636	static void	819	static void
637	timers_reify (void)	820	timers_reify (EV_P)
638	{	821	{
639	while (timercnt && timers [0]->at <= now)	822	while (timercnt && ((WT)timers [0])->at <= mn_now)
640	{	823	{
641	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)));
642		827
643	/* first reschedule or stop timer */	828	/* first reschedule or stop timer */
644	if (w->repeat)	829	if (w->repeat)
645	{	830	{
646	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.));
647	w->at = now + w->repeat;	832	((WT)w)->at = mn_now + w->repeat;
648	downheap ((WT *)timers, timercnt, 0);	833	downheap ((WT *)timers, timercnt, 0);
649	}	834	}
650	else	835	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	836	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		837
653	event ((W)w, EV_TIMEOUT);	838	event (EV_A_ (W)w, EV_TIMEOUT);
654	}	839	}
655	}	840	}
656		841
657	static void	842	static void
658	periodics_reify (void)	843	periodics_reify (EV_P)
659	{	844	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	845	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
661	{	846	{
662	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)));
663		850
664	/* first reschedule or stop timer */	851	/* first reschedule or stop timer */
665	if (w->interval)	852	if (w->interval)
666	{	853	{
667	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;
668	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));
669	downheap ((WT *)periodics, periodiccnt, 0);	856	downheap ((WT *)periodics, periodiccnt, 0);
670	}	857	}
671	else	858	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	859	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		860
674	event ((W)w, EV_PERIODIC);	861	event (EV_A_ (W)w, EV_PERIODIC);
675	}	862	}
676	}	863	}
677		864
678	static void	865	static void
679	periodics_reschedule (ev_tstamp diff)	866	periodics_reschedule (EV_P)
680	{	867	{
681	int i;	868	int i;
682		869
683	/* adjust periodics after time jump */	870	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	871	for (i = 0; i < periodiccnt; ++i)
685	{	872	{
686	struct ev_periodic *w = periodics [i];	873	struct ev_periodic *w = periodics [i];
687		874
688	if (w->interval)	875	if (w->interval)
689	{	876	{
690	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;
691		878
692	if (fabs (diff) >= 1e-4)	879	if (fabs (diff) >= 1e-4)
693	{	880	{
694	ev_periodic_stop (w);	881	ev_periodic_stop (EV_A_ w);
695	ev_periodic_start (w);	882	ev_periodic_start (EV_A_ w);
696		883
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */	884	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}	885	}
699	}	886	}
700	}	887	}
701	}	888	}
702		889
703	static int	890	inline int
704	time_update_monotonic (void)	891	time_update_monotonic (EV_P)
705	{	892	{
706	now = get_clock ();	893	mn_now = get_clock ();
707		894
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	895	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	896	{
710	ev_now = now + diff;	897	rt_now = rtmn_diff + mn_now;
711	return 0;	898	return 0;
712	}	899	}
713	else	900	else
714	{	901	{
715	now_floor = now;	902	now_floor = mn_now;
716	ev_now = ev_time ();	903	rt_now = ev_time ();
717	return 1;	904	return 1;
718	}	905	}
719	}	906	}
720		907
721	static void	908	static void
722	time_update (void)	909	time_update (EV_P)
723	{	910	{
724	int i;	911	int i;
725		912
726	#if EV_USE_MONOTONIC	913	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	914	if (expect_true (have_monotonic))
728	{	915	{
729	if (time_update_monotonic ())	916	if (time_update_monotonic (EV_A))
730	{	917	{
731	ev_tstamp odiff = diff;	918	ev_tstamp odiff = rtmn_diff;
732		919
733	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 */
734	{	921	{
735	diff = ev_now - now;	922	rtmn_diff = rt_now - mn_now;
736		923
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	924	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	925	return; /* all is well */
739		926
740	ev_now = ev_time ();	927	rt_now = ev_time ();
741	now = get_clock ();	928	mn_now = get_clock ();
742	now_floor = now;	929	now_floor = mn_now;
743	}	930	}
744		931
745	periodics_reschedule (diff - odiff);	932	periodics_reschedule (EV_A);
746	/* 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) */
747	}	935	}
748	}	936	}
749	else	937	else
750	#endif	938	#endif
751	{	939	{
752	ev_now = ev_time ();	940	rt_now = ev_time ();
753		941
754	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))
755	{	943	{
756	periodics_reschedule (ev_now - now);	944	periodics_reschedule (EV_A);
757		945
758	/* 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 */
759	for (i = 0; i < timercnt; ++i)	947	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	948	((WT)timers [i])->at += rt_now - mn_now;
761	}	949	}
762		950
763	now = ev_now;	951	mn_now = rt_now;
764	}	952	}
765	}	953	}
766		954
767	int ev_loop_done;	955	void
		956	ev_ref (EV_P)
		957	{
		958	++activecnt;
		959	}
768		960
		961	void
		962	ev_unref (EV_P)
		963	{
		964	--activecnt;
		965	}
		966
		967	static int loop_done;
		968
		969	void
769	void ev_loop (int flags)	970	ev_loop (EV_P_ int flags)
770	{	971	{
771	double block;	972	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	973	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
773		974
774	do	975	do
775	{	976	{
776	/* queue check watchers (and execute them) */	977	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	978	if (expect_false (preparecnt))
778	{	979	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	980	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	981	call_pending (EV_A);
781	}	982	}
782		983
783	/* update fd-related kernel structures */	984	/* update fd-related kernel structures */
784	fd_reify ();	985	fd_reify (EV_A);
785		986
786	/* calculate blocking time */	987	/* calculate blocking time */
787		988
788	/* 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
789	always have timers, we just calculate it always */	990	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	991	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	992	if (expect_true (have_monotonic))
792	time_update_monotonic ();	993	time_update_monotonic (EV_A);
793	else	994	else
794	#endif	995	#endif
795	{	996	{
796	ev_now = ev_time ();	997	rt_now = ev_time ();
797	now = ev_now;	998	mn_now = rt_now;
798	}	999	}
799		1000
800	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1001	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
801	block = 0.;	1002	block = 0.;
802	else	1003	else
803	{	1004	{
804	block = MAX_BLOCKTIME;	1005	block = MAX_BLOCKTIME;
805		1006
806	if (timercnt)	1007	if (timercnt)
807	{	1008	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	1009	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
809	if (block > to) block = to;	1010	if (block > to) block = to;
810	}	1011	}
811		1012
812	if (periodiccnt)	1013	if (periodiccnt)
813	{	1014	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1015	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
815	if (block > to) block = to;	1016	if (block > to) block = to;
816	}	1017	}
817		1018
818	if (block < 0.) block = 0.;	1019	if (block < 0.) block = 0.;
819	}	1020	}
820		1021
821	method_poll (block);	1022	method_poll (EV_A_ block);
822		1023
823	/* update ev_now, do magic */	1024	/* update rt_now, do magic */
824	time_update ();	1025	time_update (EV_A);
825		1026
826	/* queue pending timers and reschedule them */	1027	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	1028	timers_reify (EV_A); /* relative timers called last */
828	periodics_reify (); /* absolute timers called first */	1029	periodics_reify (EV_A); /* absolute timers called first */
829		1030
830	/* queue idle watchers unless io or timers are pending */	1031	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	1032	if (!pendingcnt)
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	1033	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		1034
834	/* queue check watchers, to be executed first */	1035	/* queue check watchers, to be executed first */
835	if (checkcnt)	1036	if (checkcnt)
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	1037	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		1038
838	call_pending ();	1039	call_pending (EV_A);
839	}	1040	}
840	while (!ev_loop_done);	1041	while (activecnt && !loop_done);
841		1042
842	if (ev_loop_done != 2)	1043	if (loop_done != 2)
843	ev_loop_done = 0;	1044	loop_done = 0;
		1045	}
		1046
		1047	void
		1048	ev_unloop (EV_P_ int how)
		1049	{
		1050	loop_done = how;
844	}	1051	}
845		1052
846	/*****************************************************************************/	1053	/*****************************************************************************/
847		1054
848	static void	1055	inline void
849	wlist_add (WL *head, WL elem)	1056	wlist_add (WL *head, WL elem)
850	{	1057	{
851	elem->next = *head;	1058	elem->next = *head;
852	*head = elem;	1059	*head = elem;
853	}	1060	}
854		1061
855	static void	1062	inline void
856	wlist_del (WL *head, WL elem)	1063	wlist_del (WL *head, WL elem)
857	{	1064	{
858	while (*head)	1065	while (*head)
859	{	1066	{
860	if (*head == elem)	1067	if (*head == elem)
…		…
865		1072
866	head = &(*head)->next;	1073	head = &(*head)->next;
867	}	1074	}
868	}	1075	}
869		1076
870	static void	1077	inline void
871	ev_clear_pending (W w)	1078	ev_clear_pending (EV_P_ W w)
872	{	1079	{
873	if (w->pending)	1080	if (w->pending)
874	{	1081	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1082	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1083	w->pending = 0;
877	}	1084	}
878	}	1085	}
879		1086
880	static void	1087	inline void
881	ev_start (W w, int active)	1088	ev_start (EV_P_ W w, int active)
882	{	1089	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1090	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1091	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1092
886	w->active = active;	1093	w->active = active;
		1094	ev_ref (EV_A);
887	}	1095	}
888		1096
889	static void	1097	inline void
890	ev_stop (W w)	1098	ev_stop (EV_P_ W w)
891	{	1099	{
		1100	ev_unref (EV_A);
892	w->active = 0;	1101	w->active = 0;
893	}	1102	}
894		1103
895	/*****************************************************************************/	1104	/*****************************************************************************/
896		1105
897	void	1106	void
898	ev_io_start (struct ev_io *w)	1107	ev_io_start (EV_P_ struct ev_io *w)
899	{	1108	{
900	int fd = w->fd;	1109	int fd = w->fd;
901		1110
902	if (ev_is_active (w))	1111	if (ev_is_active (w))
903	return;	1112	return;
904		1113
905	assert (("ev_io_start called with negative fd", fd >= 0));	1114	assert (("ev_io_start called with negative fd", fd >= 0));
906		1115
907	ev_start ((W)w, 1);	1116	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1117	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1118	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1119
911	fd_change (fd);	1120	fd_change (EV_A_ fd);
912	}	1121	}
913		1122
914	void	1123	void
915	ev_io_stop (struct ev_io *w)	1124	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1125	{
917	ev_clear_pending ((W)w);	1126	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1127	if (!ev_is_active (w))
919	return;	1128	return;
920		1129
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1130	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1131	ev_stop (EV_A_ (W)w);
923		1132
924	fd_change (w->fd);	1133	fd_change (EV_A_ w->fd);
925	}	1134	}
926		1135
927	void	1136	void
928	ev_timer_start (struct ev_timer *w)	1137	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1138	{
930	if (ev_is_active (w))	1139	if (ev_is_active (w))
931	return;	1140	return;
932		1141
933	w->at += now;	1142	((WT)w)->at += mn_now;
934		1143
935	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.));
936		1145
937	ev_start ((W)w, ++timercnt);	1146	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1147	array_needsize (timers, timermax, timercnt, );
939	timers [timercnt - 1] = w;	1148	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1149	upheap ((WT *)timers, timercnt - 1);
941	}
942		1150
		1151	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1152	}
		1153
943	void	1154	void
944	ev_timer_stop (struct ev_timer *w)	1155	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1156	{
946	ev_clear_pending ((W)w);	1157	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1158	if (!ev_is_active (w))
948	return;	1159	return;
949		1160
		1161	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1162
950	if (w->active < timercnt--)	1163	if (((W)w)->active < timercnt--)
951	{	1164	{
952	timers [w->active - 1] = timers [timercnt];	1165	timers [((W)w)->active - 1] = timers [timercnt];
953	downheap ((WT *)timers, timercnt, w->active - 1);	1166	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
954	}	1167	}
955		1168
956	w->at = w->repeat;	1169	((WT)w)->at = w->repeat;
957		1170
958	ev_stop ((W)w);	1171	ev_stop (EV_A_ (W)w);
959	}	1172	}
960		1173
961	void	1174	void
962	ev_timer_again (struct ev_timer *w)	1175	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1176	{
964	if (ev_is_active (w))	1177	if (ev_is_active (w))
965	{	1178	{
966	if (w->repeat)	1179	if (w->repeat)
967	{	1180	{
968	w->at = now + w->repeat;	1181	((WT)w)->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
970	}	1183	}
971	else	1184	else
972	ev_timer_stop (w);	1185	ev_timer_stop (EV_A_ w);
973	}	1186	}
974	else if (w->repeat)	1187	else if (w->repeat)
975	ev_timer_start (w);	1188	ev_timer_start (EV_A_ w);
976	}	1189	}
977		1190
978	void	1191	void
979	ev_periodic_start (struct ev_periodic *w)	1192	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1193	{
981	if (ev_is_active (w))	1194	if (ev_is_active (w))
982	return;	1195	return;
983		1196
984	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.));
985		1198
986	/* 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 */
987	if (w->interval)	1200	if (w->interval)
988	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;
989		1202
990	ev_start ((W)w, ++periodiccnt);	1203	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1204	array_needsize (periodics, periodicmax, periodiccnt, );
992	periodics [periodiccnt - 1] = w;	1205	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1206	upheap ((WT *)periodics, periodiccnt - 1);
994	}
995		1207
		1208	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1209	}
		1210
996	void	1211	void
997	ev_periodic_stop (struct ev_periodic *w)	1212	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1213	{
999	ev_clear_pending ((W)w);	1214	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1215	if (!ev_is_active (w))
1001	return;	1216	return;
1002		1217
		1218	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1219
1003	if (w->active < periodiccnt--)	1220	if (((W)w)->active < periodiccnt--)
1004	{	1221	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1222	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1223	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1007	}	1224	}
1008		1225
1009	ev_stop ((W)w);	1226	ev_stop (EV_A_ (W)w);
1010	}	1227	}
1011		1228
1012	void	1229	void
1013	ev_signal_start (struct ev_signal *w)	1230	ev_idle_start (EV_P_ struct ev_idle *w)
1014	{	1231	{
1015	if (ev_is_active (w))	1232	if (ev_is_active (w))
1016	return;	1233	return;
1017		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);
		1293	}
		1294
		1295	#ifndef SA_RESTART
		1296	# define SA_RESTART 0
		1297	#endif
		1298
		1299	void
		1300	ev_signal_start (EV_P_ struct ev_signal *w)
		1301	{
		1302	#if EV_MULTIPLICITY
		1303	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1304	#endif
		1305	if (ev_is_active (w))
		1306	return;
		1307
1018	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));
1019		1309
1020	ev_start ((W)w, 1);	1310	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1311	array_needsize (signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1312	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1313
1024	if (!w->next)	1314	if (!((WL)w)->next)
1025	{	1315	{
1026	struct sigaction sa;	1316	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1317	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1318	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1319	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1320	sigaction (w->signum, &sa, 0);
1031	}	1321	}
1032	}	1322	}
1033		1323
1034	void	1324	void
1035	ev_signal_stop (struct ev_signal *w)	1325	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1326	{
1037	ev_clear_pending ((W)w);	1327	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
1039	return;	1329	return;
1040		1330
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1331	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1332	ev_stop (EV_A_ (W)w);
1043		1333
1044	if (!signals [w->signum - 1].head)	1334	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1335	signal (w->signum, SIG_DFL);
1046	}	1336	}
1047		1337
1048	void	1338	void
1049	ev_idle_start (struct ev_idle *w)	1339	ev_child_start (EV_P_ struct ev_child *w)
1050	{	1340	{
		1341	#if EV_MULTIPLICITY
		1342	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1343	#endif
1051	if (ev_is_active (w))	1344	if (ev_is_active (w))
1052	return;	1345	return;
1053		1346
1054	ev_start ((W)w, ++idlecnt);	1347	ev_start (EV_A_ (W)w, 1);
1055	array_needsize (idles, idlemax, idlecnt, );	1348	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1056	idles [idlecnt - 1] = w;
1057	}	1349	}
1058		1350
1059	void	1351	void
1060	ev_idle_stop (struct ev_idle *w)	1352	ev_child_stop (EV_P_ struct ev_child *w)
1061	{	1353	{
1062	ev_clear_pending ((W)w);	1354	ev_clear_pending (EV_A_ (W)w);
1063	if (ev_is_active (w))	1355	if (ev_is_active (w))
1064	return;	1356	return;
1065		1357
1066	idles [w->active - 1] = idles [--idlecnt];
1067	ev_stop ((W)w);
1068	}
1069
1070	void
1071	ev_prepare_start (struct ev_prepare *w)
1072	{
1073	if (ev_is_active (w))
1074	return;
1075
1076	ev_start ((W)w, ++preparecnt);
1077	array_needsize (prepares, preparemax, preparecnt, );
1078	prepares [preparecnt - 1] = w;
1079	}
1080
1081	void
1082	ev_prepare_stop (struct ev_prepare *w)
1083	{
1084	ev_clear_pending ((W)w);
1085	if (ev_is_active (w))
1086	return;
1087
1088	prepares [w->active - 1] = prepares [--preparecnt];
1089	ev_stop ((W)w);
1090	}
1091
1092	void
1093	ev_check_start (struct ev_check *w)
1094	{
1095	if (ev_is_active (w))
1096	return;
1097
1098	ev_start ((W)w, ++checkcnt);
1099	array_needsize (checks, checkmax, checkcnt, );
1100	checks [checkcnt - 1] = w;
1101	}
1102
1103	void
1104	ev_check_stop (struct ev_check *w)
1105	{
1106	ev_clear_pending ((W)w);
1107	if (ev_is_active (w))
1108	return;
1109
1110	checks [w->active - 1] = checks [--checkcnt];
1111	ev_stop ((W)w);
1112	}
1113
1114	void
1115	ev_child_start (struct ev_child *w)
1116	{
1117	if (ev_is_active (w))
1118	return;
1119
1120	ev_start ((W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}
1123
1124	void
1125	ev_child_stop (struct ev_child *w)
1126	{
1127	ev_clear_pending ((W)w);
1128	if (ev_is_active (w))
1129	return;
1130
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1358	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1359	ev_stop (EV_A_ (W)w);
1133	}	1360	}
1134		1361
1135	/*****************************************************************************/	1362	/*****************************************************************************/
1136		1363
1137	struct ev_once	1364	struct ev_once
…		…
1141	void (cb)(int revents, void arg);	1368	void (cb)(int revents, void arg);
1142	void *arg;	1369	void *arg;
1143	};	1370	};
1144		1371
1145	static void	1372	static void
1146	once_cb (struct ev_once *once, int revents)	1373	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1374	{
1148	void (cb)(int revents, void arg) = once->cb;	1375	void (cb)(int revents, void arg) = once->cb;
1149	void *arg = once->arg;	1376	void *arg = once->arg;
1150		1377
1151	ev_io_stop (&once->io);	1378	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1379	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1380	free (once);
1154		1381
1155	cb (revents, arg);	1382	cb (revents, arg);
1156	}	1383	}
1157		1384
1158	static void	1385	static void
1159	once_cb_io (struct ev_io *w, int revents)	1386	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1387	{
1161	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);
1162	}	1389	}
1163		1390
1164	static void	1391	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1392	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1393	{
1167	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);
1168	}	1395	}
1169		1396
1170	void	1397	void
1171	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)
1172	{	1399	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1400	struct ev_once *once = malloc (sizeof (struct ev_once));
1174		1401
1175	if (!once)	1402	if (!once)
1176	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1403	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1181		1408
1182	ev_watcher_init (&once->io, once_cb_io);	1409	ev_watcher_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1410	if (fd >= 0)
1184	{	1411	{
1185	ev_io_set (&once->io, fd, events);	1412	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1413	ev_io_start (EV_A_ &once->io);
1187	}	1414	}
1188		1415
1189	ev_watcher_init (&once->to, once_cb_to);	1416	ev_watcher_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1417	if (timeout >= 0.)
1191	{	1418	{
1192	ev_timer_set (&once->to, timeout, 0.);	1419	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1420	ev_timer_start (EV_A_ &once->to);
1194	}	1421	}
1195	}	1422	}
1196	}	1423	}
1197		1424
1198	/*****************************************************************************/
1199
1200	#if 0
1201
1202	struct ev_io wio;
1203
1204	static void
1205	sin_cb (struct ev_io *w, int revents)
1206	{
1207	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1208	}
1209
1210	static void
1211	ocb (struct ev_timer *w, int revents)
1212	{
1213	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1214	ev_timer_stop (w);
1215	ev_timer_start (w);
1216	}
1217
1218	static void
1219	scb (struct ev_signal *w, int revents)
1220	{
1221	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1222	ev_io_stop (&wio);
1223	ev_io_start (&wio);
1224	}
1225
1226	static void
1227	gcb (struct ev_signal *w, int revents)
1228	{
1229	fprintf (stderr, "generic %x\n", revents);
1230
1231	}
1232
1233	int main (void)
1234	{
1235	ev_init (0);
1236
1237	ev_io_init (&wio, sin_cb, 0, EV_READ);
1238	ev_io_start (&wio);
1239
1240	struct ev_timer t[10000];
1241
1242	#if 0
1243	int i;
1244	for (i = 0; i < 10000; ++i)
1245	{
1246	struct ev_timer *w = t + i;
1247	ev_watcher_init (w, ocb, i);
1248	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1249	ev_timer_start (w);
1250	if (drand48 () < 0.5)
1251	ev_timer_stop (w);
1252	}
1253	#endif
1254
1255	struct ev_timer t1;
1256	ev_timer_init (&t1, ocb, 5, 10);
1257	ev_timer_start (&t1);
1258
1259	struct ev_signal sig;
1260	ev_signal_init (&sig, scb, SIGQUIT);
1261	ev_signal_start (&sig);
1262
1263	struct ev_check cw;
1264	ev_check_init (&cw, gcb);
1265	ev_check_start (&cw);
1266
1267	struct ev_idle iw;
1268	ev_idle_init (&iw, gcb);
1269	ev_idle_start (&iw);
1270
1271	ev_loop (0);
1272
1273	return 0;
1274	}
1275
1276	#endif
1277
1278
1279
1280

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs. Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.65 by root, Sun Nov 4 23:29:48 2007 UTC