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Comparing libev/ev.c (file contents):
Revision 1.42 by root, Fri Nov 2 20:05:05 2007 UTC vs.
Revision 1.66 by root, Sun Nov 4 23:30:53 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>
…		…
42	#include <stdio.h>	64	#include <stdio.h>
43		65
44	#include <assert.h>	66	#include <assert.h>
45	#include <errno.h>	67	#include <errno.h>
46	#include <sys/types.h>	68	#include <sys/types.h>
		69	#ifndef WIN32
47	#include <sys/wait.h>	70	# include <sys/wait.h>
		71	#endif
48	#include <sys/time.h>	72	#include <sys/time.h>
49	#include <time.h>	73	#include <time.h>
50		74
51	/**/	75	/**/
52		76
…		…
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	87	#endif
64		88
65	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
		91	#endif
		92
		93	#ifndef EV_USE_KQUEUE
		94	# define EV_USE_KQUEUE 0
		95	#endif
		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
67	#endif	103	#endif
68		104
69	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
71	#endif	107	#endif
…		…
107		143
108	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
111		147
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115
116	static int have_monotonic; /* runtime */
117
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		149
122	/*****************************************************************************/	150	/*****************************************************************************/
123		151
124	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
125	ev_time (void)	186	ev_time (void)
126	{	187	{
127	#if EV_USE_REALTIME	188	#if EV_USE_REALTIME
128	struct timespec ts;	189	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	190	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	194	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	195	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	196	#endif
136	}	197	}
137		198
138	static ev_tstamp	199	inline ev_tstamp
139	get_clock (void)	200	get_clock (void)
140	{	201	{
141	#if EV_USE_MONOTONIC	202	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	203	if (expect_true (have_monotonic))
143	{	204	{
…		…
146	return ts.tv_sec + ts.tv_nsec * 1e-9;	207	return ts.tv_sec + ts.tv_nsec * 1e-9;
147	}	208	}
148	#endif	209	#endif
149		210
150	return ev_time ();	211	return ev_time ();
		212	}
		213
		214	ev_tstamp
		215	ev_now (EV_P)
		216	{
		217	return rt_now;
151	}	218	}
152		219
153	#define array_roundsize(base,n) ((n) | 4 & ~3)	220	#define array_roundsize(base,n) ((n) | 4 & ~3)
154		221
155	#define array_needsize(base,cur,cnt,init) \	222	#define array_needsize(base,cur,cnt,init) \
…		…
165	base = realloc (base, sizeof (*base) * (newcnt)); \	232	base = realloc (base, sizeof (*base) * (newcnt)); \
166	init (base + cur, newcnt - cur); \	233	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	234	cur = newcnt; \
168	}	235	}
169		236
		237	#define array_free(stem, idx) \
		238	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		239
170	/*****************************************************************************/	240	/*****************************************************************************/
171
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181		241
182	static void	242	static void
183	anfds_init (ANFD *base, int count)	243	anfds_init (ANFD *base, int count)
184	{	244	{
185	while (count--)	245	while (count--)
…		…
190		250
191	++base;	251	++base;
192	}	252	}
193	}	253	}
194		254
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	255	static void
205	event (W w, int events)	256	event (EV_P_ W w, int events)
206	{	257	{
207	if (w->pending)	258	if (w->pending)
208	{	259	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	260	pendings [ABSPRI (w)][w->pending - 1].events |= events;
210	return;	261	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	266	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	267	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	268	}
218		269
219	static void	270	static void
220	queue_events (W *events, int eventcnt, int type)	271	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	272	{
222	int i;	273	int i;
223		274
224	for (i = 0; i < eventcnt; ++i)	275	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	276	event (EV_A_ events [i], type);
226	}	277	}
227		278
228	static void	279	static void
229	fd_event (int fd, int events)	280	fd_event (EV_P_ int fd, int events)
230	{	281	{
231	ANFD *anfd = anfds + fd;	282	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	283	struct ev_io *w;
233		284
234	for (w = anfd->head; w; w = w->next)	285	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	286	{
236	int ev = w->events & events;	287	int ev = w->events & events;
237		288
238	if (ev)	289	if (ev)
239	event ((W)w, ev);	290	event (EV_A_ (W)w, ev);
240	}	291	}
241	}	292	}
242		293
243	/*****************************************************************************/	294	/*****************************************************************************/
244		295
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	296	static void
249	fd_reify (void)	297	fd_reify (EV_P)
250	{	298	{
251	int i;	299	int i;
252		300
253	for (i = 0; i < fdchangecnt; ++i)	301	for (i = 0; i < fdchangecnt; ++i)
254	{	302	{
…		…
256	ANFD *anfd = anfds + fd;	304	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	305	struct ev_io *w;
258		306
259	int events = 0;	307	int events = 0;
260		308
261	for (w = anfd->head; w; w = w->next)	309	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	310	events |= w->events;
263		311
264	anfd->reify = 0;	312	anfd->reify = 0;
265		313
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	314	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	315	anfd->events = events;
270	}
271	}	316	}
272		317
273	fdchangecnt = 0;	318	fdchangecnt = 0;
274	}	319	}
275		320
276	static void	321	static void
277	fd_change (int fd)	322	fd_change (EV_P_ int fd)
278	{	323	{
279	if (anfds [fd].reify || fdchangecnt < 0)	324	if (anfds [fd].reify || fdchangecnt < 0)
280	return;	325	return;
281		326
282	anfds [fd].reify = 1;	327	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	331	fdchanges [fdchangecnt - 1] = fd;
287	}	332	}
288		333
289	static void	334	static void
290	fd_kill (int fd)	335	fd_kill (EV_P_ int fd)
291	{	336	{
292	struct ev_io *w;	337	struct ev_io *w;
293		338
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	339	while ((w = (struct ev_io *)anfds [fd].head))
296	{	340	{
297	ev_io_stop (w);	341	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	342	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	343	}
300	}	344	}
301		345
302	/* called on EBADF to verify fds */	346	/* called on EBADF to verify fds */
303	static void	347	static void
304	fd_ebadf (void)	348	fd_ebadf (EV_P)
305	{	349	{
306	int fd;	350	int fd;
307		351
308	for (fd = 0; fd < anfdmax; ++fd)	352	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	353	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	355	fd_kill (EV_A_ fd);
312	}	356	}
313		357
314	/* 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 */
315	static void	359	static void
316	fd_enomem (void)	360	fd_enomem (EV_P)
317	{	361	{
318	int fd = anfdmax;	362	int fd;
319		363
320	while (fd--)	364	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	365	if (anfds [fd].events)
322	{	366	{
323	close (fd);	367	close (fd);
324	fd_kill (fd);	368	fd_kill (EV_A_ fd);
325	return;	369	return;
326	}	370	}
327	}	371	}
328		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
329	/*****************************************************************************/	388	/*****************************************************************************/
330		389
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	390	static void
338	upheap (WT *timers, int k)	391	upheap (WT *heap, int k)
339	{	392	{
340	WT w = timers [k];	393	WT w = heap [k];
341		394
342	while (k && timers [k >> 1]->at > w->at)	395	while (k && heap [k >> 1]->at > w->at)
343	{	396	{
344	timers [k] = timers [k >> 1];	397	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	398	((W)heap [k])->active = k + 1;
346	k >>= 1;	399	k >>= 1;
347	}	400	}
348		401
349	timers [k] = w;	402	heap [k] = w;
350	timers [k]->active = k + 1;	403	((W)heap [k])->active = k + 1;
351		404
352	}	405	}
353		406
354	static void	407	static void
355	downheap (WT *timers, int N, int k)	408	downheap (WT *heap, int N, int k)
356	{	409	{
357	WT w = timers [k];	410	WT w = heap [k];
358		411
359	while (k < (N >> 1))	412	while (k < (N >> 1))
360	{	413	{
361	int j = k << 1;	414	int j = k << 1;
362		415
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	416	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	417	++j;
365		418
366	if (w->at <= timers [j]->at)	419	if (w->at <= heap [j]->at)
367	break;	420	break;
368		421
369	timers [k] = timers [j];	422	heap [k] = heap [j];
370	timers [k]->active = k + 1;	423	((W)heap [k])->active = k + 1;
371	k = j;	424	k = j;
372	}	425	}
373		426
374	timers [k] = w;	427	heap [k] = w;
375	timers [k]->active = k + 1;	428	((W)heap [k])->active = k + 1;
376	}	429	}
377		430
378	/*****************************************************************************/	431	/*****************************************************************************/
379		432
380	typedef struct	433	typedef struct
381	{	434	{
382	struct ev_signal *head;	435	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	436	sig_atomic_t volatile gotsig;
384	} ANSIG;	437	} ANSIG;
385		438
386	static ANSIG *signals;	439	static ANSIG *signals;
387	static int signalmax;	440	static int signalmax;
…		…
407	{	460	{
408	signals [signum - 1].gotsig = 1;	461	signals [signum - 1].gotsig = 1;
409		462
410	if (!gotsig)	463	if (!gotsig)
411	{	464	{
		465	int old_errno = errno;
412	gotsig = 1;	466	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	467	write (sigpipe [1], &signum, 1);
		468	errno = old_errno;
414	}	469	}
415	}	470	}
416		471
417	static void	472	static void
418	sigcb (struct ev_io *iow, int revents)	473	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	474	{
420	struct ev_signal *w;	475	struct ev_watcher_list *w;
421	int signum;	476	int signum;
422		477
423	read (sigpipe [0], &revents, 1);	478	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	479	gotsig = 0;
425		480
…		…
427	if (signals [signum].gotsig)	482	if (signals [signum].gotsig)
428	{	483	{
429	signals [signum].gotsig = 0;	484	signals [signum].gotsig = 0;
430		485
431	for (w = signals [signum].head; w; w = w->next)	486	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	487	event (EV_A_ (W)w, EV_SIGNAL);
433	}	488	}
434	}	489	}
435		490
436	static void	491	static void
437	siginit (void)	492	siginit (EV_P)
438	{	493	{
		494	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		497
442	/* rather than sort out wether we really need nb, set it */	498	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		501	#endif
445		502
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	503	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	504	ev_io_start (EV_A_ &sigev);
		505	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	506	}
449		507
450	/*****************************************************************************/	508	/*****************************************************************************/
451		509
452	static struct ev_idle **idles;	510	#ifndef WIN32
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462		511
463	static struct ev_child *childs [PID_HASHSIZE];	512	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;	513	static struct ev_signal childev;
465		514
466	#ifndef WCONTINUED	515	#ifndef WCONTINUED
467	# define WCONTINUED 0	516	# define WCONTINUED 0
468	#endif	517	#endif
469		518
470	static void	519	static void
471	childcb (struct ev_signal *sw, int revents)	520	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	521	{
473	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	{
474	int pid, status;	537	int pid, status;
475		538
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	540	{
478	if (w->pid == pid || !w->pid)	541	/* make sure we are called again until all childs have been reaped */
479	{	542	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	543
481	event ((W)w, EV_CHILD);	544	child_reap (EV_A_ sw, pid, pid, status);
482	}	545	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		546	}
483	}	547	}
		548
		549	#endif
484		550
485	/*****************************************************************************/	551	/*****************************************************************************/
486		552
		553	#if EV_USE_KQUEUE
		554	# include "ev_kqueue.c"
		555	#endif
487	#if EV_USE_EPOLL	556	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	557	# include "ev_epoll.c"
489	#endif	558	#endif
490	#if EV_USE_POLL	559	#if EV_USE_POLL
491	# include "ev_poll.c"	560	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	573	ev_version_minor (void)
505	{	574	{
506	return EV_VERSION_MINOR;	575	return EV_VERSION_MINOR;
507	}	576	}
508		577
509	/* 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 */
510	static int	579	static int
511	enable_secure ()	580	enable_secure (void)
512	{	581	{
		582	#ifdef WIN32
		583	return 0;
		584	#else
513	return getuid () != geteuid ()	585	return getuid () != geteuid ()
514	|| getgid () != getegid ();	586	|| getgid () != getegid ();
		587	#endif
515	}	588	}
516		589
517	int ev_init (int methods)	590	int
		591	ev_method (EV_P)
518	{	592	{
		593	return method;
		594	}
		595
		596	static void
		597	loop_init (EV_P_ int methods)
		598	{
519	if (!ev_method)	599	if (!method)
520	{	600	{
521	#if EV_USE_MONOTONIC	601	#if EV_USE_MONOTONIC
522	{	602	{
523	struct timespec ts;	603	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	605	have_monotonic = 1;
526	}	606	}
527	#endif	607	#endif
528		608
529	ev_now = ev_time ();	609	rt_now = ev_time ();
530	now = get_clock ();	610	mn_now = get_clock ();
531	now_floor = now;	611	now_floor = mn_now;
532	diff = ev_now - now;	612	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		613
537	if (methods == EVMETHOD_AUTO)	614	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	616	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	617	else
541	methods = EVMETHOD_ANY;	618	methods = EVMETHOD_ANY;
542		619
543	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
		624	#if EV_USE_KQUEUE
		625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		626	#endif
544	#if EV_USE_EPOLL	627	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	629	#endif
547	#if EV_USE_POLL	630	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	632	#endif
550	#if EV_USE_SELECT	633	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	635	#endif
		636	}
		637	}
553		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
554	if (ev_method)	741	if (ev_method (EV_A))
555	{	742	{
556	ev_watcher_init (&sigev, sigcb);	743	ev_watcher_init (&sigev, sigcb);
		744	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	745	siginit (EV_A);
558		746
		747	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	748	ev_signal_init (&childev, childcb, SIGCHLD);
		749	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	750	ev_signal_start (EV_A_ &childev);
		751	ev_unref (EV_A); /* child watcher should not keep loop alive */
		752	#endif
561	}	753	}
		754	else
		755	default_loop = 0;
562	}	756	}
563		757
564	return ev_method;	758	return default_loop;
565	}	759	}
566		760
567	/*****************************************************************************/
568
569	void	761	void
570	ev_fork_prepare (void)	762	ev_default_destroy (void)
571	{	763	{
572	/* nop */	764	#if EV_MULTIPLICITY
573	}	765	struct ev_loop *loop = default_loop;
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif	766	#endif
588		767
		768	ev_ref (EV_A); /* child watcher */
		769	ev_signal_stop (EV_A_ &childev);
		770
		771	ev_ref (EV_A); /* signal watcher */
589	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);
590	close (sigpipe [0]);	790	close (sigpipe [0]);
591	close (sigpipe [1]);	791	close (sigpipe [1]);
592	pipe (sigpipe);	792	pipe (sigpipe);
		793
		794	ev_ref (EV_A); /* signal watcher */
593	siginit ();	795	siginit (EV_A);
594	}	796	}
595		797
596	/*****************************************************************************/	798	/*****************************************************************************/
597		799
598	static void	800	static void
599	call_pending (void)	801	call_pending (EV_P)
600	{	802	{
601	int pri;	803	int pri;
602		804
603	for (pri = NUMPRI; pri--; )	805	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	806	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		809
608	if (p->w)	810	if (p->w)
609	{	811	{
610	p->w->pending = 0;	812	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	813	p->w->cb (EV_A_ p->w, p->events);
612	}	814	}
613	}	815	}
614	}	816	}
615		817
616	static void	818	static void
617	timers_reify (void)	819	timers_reify (EV_P)
618	{	820	{
619	while (timercnt && timers [0]->at <= now)	821	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	822	{
621	struct ev_timer *w = timers [0];	823	struct ev_timer *w = timers [0];
		824
		825	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		826
623	/* first reschedule or stop timer */	827	/* first reschedule or stop timer */
624	if (w->repeat)	828	if (w->repeat)
625	{	829	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	830	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	831	((WT)w)->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	832	downheap ((WT *)timers, timercnt, 0);
629	}	833	}
630	else	834	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	835	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		836
633	event ((W)w, EV_TIMEOUT);	837	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	838	}
635	}	839	}
636		840
637	static void	841	static void
638	periodics_reify (void)	842	periodics_reify (EV_P)
639	{	843	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	844	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
641	{	845	{
642	struct ev_periodic *w = periodics [0];	846	struct ev_periodic *w = periodics [0];
		847
		848	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
643		849
644	/* first reschedule or stop timer */	850	/* first reschedule or stop timer */
645	if (w->interval)	851	if (w->interval)
646	{	852	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	853	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	854	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	855	downheap ((WT *)periodics, periodiccnt, 0);
650	}	856	}
651	else	857	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	858	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		859
654	event ((W)w, EV_PERIODIC);	860	event (EV_A_ (W)w, EV_PERIODIC);
655	}	861	}
656	}	862	}
657		863
658	static void	864	static void
659	periodics_reschedule (ev_tstamp diff)	865	periodics_reschedule (EV_P)
660	{	866	{
661	int i;	867	int i;
662		868
663	/* adjust periodics after time jump */	869	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	870	for (i = 0; i < periodiccnt; ++i)
665	{	871	{
666	struct ev_periodic *w = periodics [i];	872	struct ev_periodic *w = periodics [i];
667		873
668	if (w->interval)	874	if (w->interval)
669	{	875	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	876	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
671		877
672	if (fabs (diff) >= 1e-4)	878	if (fabs (diff) >= 1e-4)
673	{	879	{
674	ev_periodic_stop (w);	880	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	881	ev_periodic_start (EV_A_ w);
676		882
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	883	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	884	}
679	}	885	}
680	}	886	}
681	}	887	}
682		888
683	static int	889	inline int
684	time_update_monotonic (void)	890	time_update_monotonic (EV_P)
685	{	891	{
686	now = get_clock ();	892	mn_now = get_clock ();
687		893
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	894	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	895	{
690	ev_now = now + diff;	896	rt_now = rtmn_diff + mn_now;
691	return 0;	897	return 0;
692	}	898	}
693	else	899	else
694	{	900	{
695	now_floor = now;	901	now_floor = mn_now;
696	ev_now = ev_time ();	902	rt_now = ev_time ();
697	return 1;	903	return 1;
698	}	904	}
699	}	905	}
700		906
701	static void	907	static void
702	time_update (void)	908	time_update (EV_P)
703	{	909	{
704	int i;	910	int i;
705		911
706	#if EV_USE_MONOTONIC	912	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	913	if (expect_true (have_monotonic))
708	{	914	{
709	if (time_update_monotonic ())	915	if (time_update_monotonic (EV_A))
710	{	916	{
711	ev_tstamp odiff = diff;	917	ev_tstamp odiff = rtmn_diff;
712		918
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	919	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	920	{
715	diff = ev_now - now;	921	rtmn_diff = rt_now - mn_now;
716		922
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	923	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	924	return; /* all is well */
719		925
720	ev_now = ev_time ();	926	rt_now = ev_time ();
721	now = get_clock ();	927	mn_now = get_clock ();
722	now_floor = now;	928	now_floor = mn_now;
723	}	929	}
724		930
725	periodics_reschedule (diff - odiff);	931	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	932	/* no timer adjustment, as the monotonic clock doesn't jump */
		933	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	934	}
728	}	935	}
729	else	936	else
730	#endif	937	#endif
731	{	938	{
732	ev_now = ev_time ();	939	rt_now = ev_time ();
733		940
734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	941	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	942	{
736	periodics_reschedule (ev_now - now);	943	periodics_reschedule (EV_A);
737		944
738	/* adjust timers. this is easy, as the offset is the same for all */	945	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	946	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	947	((WT)timers [i])->at += rt_now - mn_now;
741	}	948	}
742		949
743	now = ev_now;	950	mn_now = rt_now;
744	}	951	}
745	}	952	}
746		953
747	int ev_loop_done;	954	void
		955	ev_ref (EV_P)
		956	{
		957	++activecnt;
		958	}
748		959
		960	void
		961	ev_unref (EV_P)
		962	{
		963	--activecnt;
		964	}
		965
		966	static int loop_done;
		967
		968	void
749	void ev_loop (int flags)	969	ev_loop (EV_P_ int flags)
750	{	970	{
751	double block;	971	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	972	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		973
754	do	974	do
755	{	975	{
756	/* queue check watchers (and execute them) */	976	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	977	if (expect_false (preparecnt))
758	{	978	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	979	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	980	call_pending (EV_A);
761	}	981	}
762		982
763	/* update fd-related kernel structures */	983	/* update fd-related kernel structures */
764	fd_reify ();	984	fd_reify (EV_A);
765		985
766	/* calculate blocking time */	986	/* calculate blocking time */
767		987
768	/* we only need this for !monotonic clockor timers, but as we basically	988	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	989	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	990	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	991	if (expect_true (have_monotonic))
772	time_update_monotonic ();	992	time_update_monotonic (EV_A);
773	else	993	else
774	#endif	994	#endif
775	{	995	{
776	ev_now = ev_time ();	996	rt_now = ev_time ();
777	now = ev_now;	997	mn_now = rt_now;
778	}	998	}
779		999
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	1000	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	1001	block = 0.;
782	else	1002	else
783	{	1003	{
784	block = MAX_BLOCKTIME;	1004	block = MAX_BLOCKTIME;
785		1005
786	if (timercnt)	1006	if (timercnt)
787	{	1007	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1008	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1009	if (block > to) block = to;
790	}	1010	}
791		1011
792	if (periodiccnt)	1012	if (periodiccnt)
793	{	1013	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1014	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
795	if (block > to) block = to;	1015	if (block > to) block = to;
796	}	1016	}
797		1017
798	if (block < 0.) block = 0.;	1018	if (block < 0.) block = 0.;
799	}	1019	}
800		1020
801	method_poll (block);	1021	method_poll (EV_A_ block);
802		1022
803	/* update ev_now, do magic */	1023	/* update rt_now, do magic */
804	time_update ();	1024	time_update (EV_A);
805		1025
806	/* queue pending timers and reschedule them */	1026	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1027	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	1028	periodics_reify (EV_A); /* absolute timers called first */
809		1029
810	/* queue idle watchers unless io or timers are pending */	1030	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1031	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1032	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1033
814	/* queue check watchers, to be executed first */	1034	/* queue check watchers, to be executed first */
815	if (checkcnt)	1035	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1036	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1037
818	call_pending ();	1038	call_pending (EV_A);
819	}	1039	}
820	while (!ev_loop_done);	1040	while (activecnt && !loop_done);
821		1041
822	if (ev_loop_done != 2)	1042	if (loop_done != 2)
823	ev_loop_done = 0;	1043	loop_done = 0;
		1044	}
		1045
		1046	void
		1047	ev_unloop (EV_P_ int how)
		1048	{
		1049	loop_done = how;
824	}	1050	}
825		1051
826	/*****************************************************************************/	1052	/*****************************************************************************/
827		1053
828	static void	1054	inline void
829	wlist_add (WL *head, WL elem)	1055	wlist_add (WL *head, WL elem)
830	{	1056	{
831	elem->next = *head;	1057	elem->next = *head;
832	*head = elem;	1058	*head = elem;
833	}	1059	}
834		1060
835	static void	1061	inline void
836	wlist_del (WL *head, WL elem)	1062	wlist_del (WL *head, WL elem)
837	{	1063	{
838	while (*head)	1064	while (*head)
839	{	1065	{
840	if (*head == elem)	1066	if (*head == elem)
…		…
845		1071
846	head = &(*head)->next;	1072	head = &(*head)->next;
847	}	1073	}
848	}	1074	}
849		1075
850	static void	1076	inline void
851	ev_clear_pending (W w)	1077	ev_clear_pending (EV_P_ W w)
852	{	1078	{
853	if (w->pending)	1079	if (w->pending)
854	{	1080	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1081	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1082	w->pending = 0;
857	}	1083	}
858	}	1084	}
859		1085
860	static void	1086	inline void
861	ev_start (W w, int active)	1087	ev_start (EV_P_ W w, int active)
862	{	1088	{
		1089	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1090	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1091
863	w->active = active;	1092	w->active = active;
		1093	ev_ref (EV_A);
864	}	1094	}
865		1095
866	static void	1096	inline void
867	ev_stop (W w)	1097	ev_stop (EV_P_ W w)
868	{	1098	{
		1099	ev_unref (EV_A);
869	w->active = 0;	1100	w->active = 0;
870	}	1101	}
871		1102
872	/*****************************************************************************/	1103	/*****************************************************************************/
873		1104
874	void	1105	void
875	ev_io_start (struct ev_io *w)	1106	ev_io_start (EV_P_ struct ev_io *w)
876	{	1107	{
877	int fd = w->fd;	1108	int fd = w->fd;
878		1109
879	if (ev_is_active (w))	1110	if (ev_is_active (w))
880	return;	1111	return;
881		1112
882	assert (("ev_io_start called with negative fd", fd >= 0));	1113	assert (("ev_io_start called with negative fd", fd >= 0));
883		1114
884	ev_start ((W)w, 1);	1115	ev_start (EV_A_ (W)w, 1);
885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1116	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
886	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1117	wlist_add ((WL *)&anfds[fd].head, (WL)w);
887		1118
888	fd_change (fd);	1119	fd_change (EV_A_ fd);
889	}	1120	}
890		1121
891	void	1122	void
892	ev_io_stop (struct ev_io *w)	1123	ev_io_stop (EV_P_ struct ev_io *w)
893	{	1124	{
894	ev_clear_pending ((W)w);	1125	ev_clear_pending (EV_A_ (W)w);
895	if (!ev_is_active (w))	1126	if (!ev_is_active (w))
896	return;	1127	return;
897		1128
898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1129	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
899	ev_stop ((W)w);	1130	ev_stop (EV_A_ (W)w);
900		1131
901	fd_change (w->fd);	1132	fd_change (EV_A_ w->fd);
902	}	1133	}
903		1134
904	void	1135	void
905	ev_timer_start (struct ev_timer *w)	1136	ev_timer_start (EV_P_ struct ev_timer *w)
906	{	1137	{
907	if (ev_is_active (w))	1138	if (ev_is_active (w))
908	return;	1139	return;
909		1140
910	w->at += now;	1141	((WT)w)->at += mn_now;
911		1142
912	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1143	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
913		1144
914	ev_start ((W)w, ++timercnt);	1145	ev_start (EV_A_ (W)w, ++timercnt);
915	array_needsize (timers, timermax, timercnt, );	1146	array_needsize (timers, timermax, timercnt, );
916	timers [timercnt - 1] = w;	1147	timers [timercnt - 1] = w;
917	upheap ((WT *)timers, timercnt - 1);	1148	upheap ((WT *)timers, timercnt - 1);
918	}
919		1149
		1150	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1151	}
		1152
920	void	1153	void
921	ev_timer_stop (struct ev_timer *w)	1154	ev_timer_stop (EV_P_ struct ev_timer *w)
922	{	1155	{
923	ev_clear_pending ((W)w);	1156	ev_clear_pending (EV_A_ (W)w);
924	if (!ev_is_active (w))	1157	if (!ev_is_active (w))
925	return;	1158	return;
926		1159
		1160	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1161
927	if (w->active < timercnt--)	1162	if (((W)w)->active < timercnt--)
928	{	1163	{
929	timers [w->active - 1] = timers [timercnt];	1164	timers [((W)w)->active - 1] = timers [timercnt];
930	downheap ((WT *)timers, timercnt, w->active - 1);	1165	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
931	}	1166	}
932		1167
933	w->at = w->repeat;	1168	((WT)w)->at = w->repeat;
934		1169
935	ev_stop ((W)w);	1170	ev_stop (EV_A_ (W)w);
936	}	1171	}
937		1172
938	void	1173	void
939	ev_timer_again (struct ev_timer *w)	1174	ev_timer_again (EV_P_ struct ev_timer *w)
940	{	1175	{
941	if (ev_is_active (w))	1176	if (ev_is_active (w))
942	{	1177	{
943	if (w->repeat)	1178	if (w->repeat)
944	{	1179	{
945	w->at = now + w->repeat;	1180	((WT)w)->at = mn_now + w->repeat;
946	downheap ((WT *)timers, timercnt, w->active - 1);	1181	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
947	}	1182	}
948	else	1183	else
949	ev_timer_stop (w);	1184	ev_timer_stop (EV_A_ w);
950	}	1185	}
951	else if (w->repeat)	1186	else if (w->repeat)
952	ev_timer_start (w);	1187	ev_timer_start (EV_A_ w);
953	}	1188	}
954		1189
955	void	1190	void
956	ev_periodic_start (struct ev_periodic *w)	1191	ev_periodic_start (EV_P_ struct ev_periodic *w)
957	{	1192	{
958	if (ev_is_active (w))	1193	if (ev_is_active (w))
959	return;	1194	return;
960		1195
961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1196	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
962		1197
963	/* this formula differs from the one in periodic_reify because we do not always round up */	1198	/* this formula differs from the one in periodic_reify because we do not always round up */
964	if (w->interval)	1199	if (w->interval)
965	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1200	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
966		1201
967	ev_start ((W)w, ++periodiccnt);	1202	ev_start (EV_A_ (W)w, ++periodiccnt);
968	array_needsize (periodics, periodicmax, periodiccnt, );	1203	array_needsize (periodics, periodicmax, periodiccnt, );
969	periodics [periodiccnt - 1] = w;	1204	periodics [periodiccnt - 1] = w;
970	upheap ((WT *)periodics, periodiccnt - 1);	1205	upheap ((WT *)periodics, periodiccnt - 1);
971	}
972		1206
		1207	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1208	}
		1209
973	void	1210	void
974	ev_periodic_stop (struct ev_periodic *w)	1211	ev_periodic_stop (EV_P_ struct ev_periodic *w)
975	{	1212	{
976	ev_clear_pending ((W)w);	1213	ev_clear_pending (EV_A_ (W)w);
977	if (!ev_is_active (w))	1214	if (!ev_is_active (w))
978	return;	1215	return;
979		1216
		1217	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1218
980	if (w->active < periodiccnt--)	1219	if (((W)w)->active < periodiccnt--)
981	{	1220	{
982	periodics [w->active - 1] = periodics [periodiccnt];	1221	periodics [((W)w)->active - 1] = periodics [periodiccnt];
983	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1222	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
984	}	1223	}
985		1224
986	ev_stop ((W)w);	1225	ev_stop (EV_A_ (W)w);
987	}	1226	}
988		1227
989	void	1228	void
990	ev_signal_start (struct ev_signal *w)	1229	ev_idle_start (EV_P_ struct ev_idle *w)
991	{	1230	{
992	if (ev_is_active (w))	1231	if (ev_is_active (w))
993	return;	1232	return;
994		1233
		1234	ev_start (EV_A_ (W)w, ++idlecnt);
		1235	array_needsize (idles, idlemax, idlecnt, );
		1236	idles [idlecnt - 1] = w;
		1237	}
		1238
		1239	void
		1240	ev_idle_stop (EV_P_ struct ev_idle *w)
		1241	{
		1242	ev_clear_pending (EV_A_ (W)w);
		1243	if (ev_is_active (w))
		1244	return;
		1245
		1246	idles [((W)w)->active - 1] = idles [--idlecnt];
		1247	ev_stop (EV_A_ (W)w);
		1248	}
		1249
		1250	void
		1251	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1252	{
		1253	if (ev_is_active (w))
		1254	return;
		1255
		1256	ev_start (EV_A_ (W)w, ++preparecnt);
		1257	array_needsize (prepares, preparemax, preparecnt, );
		1258	prepares [preparecnt - 1] = w;
		1259	}
		1260
		1261	void
		1262	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1263	{
		1264	ev_clear_pending (EV_A_ (W)w);
		1265	if (ev_is_active (w))
		1266	return;
		1267
		1268	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1269	ev_stop (EV_A_ (W)w);
		1270	}
		1271
		1272	void
		1273	ev_check_start (EV_P_ struct ev_check *w)
		1274	{
		1275	if (ev_is_active (w))
		1276	return;
		1277
		1278	ev_start (EV_A_ (W)w, ++checkcnt);
		1279	array_needsize (checks, checkmax, checkcnt, );
		1280	checks [checkcnt - 1] = w;
		1281	}
		1282
		1283	void
		1284	ev_check_stop (EV_P_ struct ev_check *w)
		1285	{
		1286	ev_clear_pending (EV_A_ (W)w);
		1287	if (ev_is_active (w))
		1288	return;
		1289
		1290	checks [((W)w)->active - 1] = checks [--checkcnt];
		1291	ev_stop (EV_A_ (W)w);
		1292	}
		1293
		1294	#ifndef SA_RESTART
		1295	# define SA_RESTART 0
		1296	#endif
		1297
		1298	void
		1299	ev_signal_start (EV_P_ struct ev_signal *w)
		1300	{
		1301	#if EV_MULTIPLICITY
		1302	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1303	#endif
		1304	if (ev_is_active (w))
		1305	return;
		1306
995	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1307	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
996		1308
997	ev_start ((W)w, 1);	1309	ev_start (EV_A_ (W)w, 1);
998	array_needsize (signals, signalmax, w->signum, signals_init);	1310	array_needsize (signals, signalmax, w->signum, signals_init);
999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1311	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1000		1312
1001	if (!w->next)	1313	if (!((WL)w)->next)
1002	{	1314	{
1003	struct sigaction sa;	1315	struct sigaction sa;
1004	sa.sa_handler = sighandler;	1316	sa.sa_handler = sighandler;
1005	sigfillset (&sa.sa_mask);	1317	sigfillset (&sa.sa_mask);
1006	sa.sa_flags = 0;	1318	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1007	sigaction (w->signum, &sa, 0);	1319	sigaction (w->signum, &sa, 0);
1008	}	1320	}
1009	}	1321	}
1010		1322
1011	void	1323	void
1012	ev_signal_stop (struct ev_signal *w)	1324	ev_signal_stop (EV_P_ struct ev_signal *w)
1013	{	1325	{
1014	ev_clear_pending ((W)w);	1326	ev_clear_pending (EV_A_ (W)w);
1015	if (!ev_is_active (w))	1327	if (!ev_is_active (w))
1016	return;	1328	return;
1017		1329
1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1330	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1019	ev_stop ((W)w);	1331	ev_stop (EV_A_ (W)w);
1020		1332
1021	if (!signals [w->signum - 1].head)	1333	if (!signals [w->signum - 1].head)
1022	signal (w->signum, SIG_DFL);	1334	signal (w->signum, SIG_DFL);
1023	}	1335	}
1024		1336
1025	void	1337	void
1026	ev_idle_start (struct ev_idle *w)	1338	ev_child_start (EV_P_ struct ev_child *w)
1027	{	1339	{
		1340	#if EV_MULTIPLICITY
		1341	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1342	#endif
1028	if (ev_is_active (w))	1343	if (ev_is_active (w))
1029	return;	1344	return;
1030		1345
1031	ev_start ((W)w, ++idlecnt);	1346	ev_start (EV_A_ (W)w, 1);
1032	array_needsize (idles, idlemax, idlecnt, );	1347	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1033	idles [idlecnt - 1] = w;
1034	}	1348	}
1035		1349
1036	void	1350	void
1037	ev_idle_stop (struct ev_idle *w)	1351	ev_child_stop (EV_P_ struct ev_child *w)
1038	{	1352	{
1039	ev_clear_pending ((W)w);	1353	ev_clear_pending (EV_A_ (W)w);
1040	if (ev_is_active (w))	1354	if (ev_is_active (w))
1041	return;	1355	return;
1042		1356
1043	idles [w->active - 1] = idles [--idlecnt];
1044	ev_stop ((W)w);
1045	}
1046
1047	void
1048	ev_prepare_start (struct ev_prepare *w)
1049	{
1050	if (ev_is_active (w))
1051	return;
1052
1053	ev_start ((W)w, ++preparecnt);
1054	array_needsize (prepares, preparemax, preparecnt, );
1055	prepares [preparecnt - 1] = w;
1056	}
1057
1058	void
1059	ev_prepare_stop (struct ev_prepare *w)
1060	{
1061	ev_clear_pending ((W)w);
1062	if (ev_is_active (w))
1063	return;
1064
1065	prepares [w->active - 1] = prepares [--preparecnt];
1066	ev_stop ((W)w);
1067	}
1068
1069	void
1070	ev_check_start (struct ev_check *w)
1071	{
1072	if (ev_is_active (w))
1073	return;
1074
1075	ev_start ((W)w, ++checkcnt);
1076	array_needsize (checks, checkmax, checkcnt, );
1077	checks [checkcnt - 1] = w;
1078	}
1079
1080	void
1081	ev_check_stop (struct ev_check *w)
1082	{
1083	ev_clear_pending ((W)w);
1084	if (ev_is_active (w))
1085	return;
1086
1087	checks [w->active - 1] = checks [--checkcnt];
1088	ev_stop ((W)w);
1089	}
1090
1091	void
1092	ev_child_start (struct ev_child *w)
1093	{
1094	if (ev_is_active (w))
1095	return;
1096
1097	ev_start ((W)w, 1);
1098	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1099	}
1100
1101	void
1102	ev_child_stop (struct ev_child *w)
1103	{
1104	ev_clear_pending ((W)w);
1105	if (ev_is_active (w))
1106	return;
1107
1108	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1357	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1109	ev_stop ((W)w);	1358	ev_stop (EV_A_ (W)w);
1110	}	1359	}
1111		1360
1112	/*****************************************************************************/	1361	/*****************************************************************************/
1113		1362
1114	struct ev_once	1363	struct ev_once
…		…
1118	void (*cb)(int revents, void *arg);	1367	void (*cb)(int revents, void *arg);
1119	void *arg;	1368	void *arg;
1120	};	1369	};
1121		1370
1122	static void	1371	static void
1123	once_cb (struct ev_once *once, int revents)	1372	once_cb (EV_P_ struct ev_once *once, int revents)
1124	{	1373	{
1125	void (*cb)(int revents, void *arg) = once->cb;	1374	void (*cb)(int revents, void *arg) = once->cb;
1126	void *arg = once->arg;	1375	void *arg = once->arg;
1127		1376
1128	ev_io_stop (&once->io);	1377	ev_io_stop (EV_A_ &once->io);
1129	ev_timer_stop (&once->to);	1378	ev_timer_stop (EV_A_ &once->to);
1130	free (once);	1379	free (once);
1131		1380
1132	cb (revents, arg);	1381	cb (revents, arg);
1133	}	1382	}
1134		1383
1135	static void	1384	static void
1136	once_cb_io (struct ev_io *w, int revents)	1385	once_cb_io (EV_P_ struct ev_io *w, int revents)
1137	{	1386	{
1138	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1387	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1139	}	1388	}
1140		1389
1141	static void	1390	static void
1142	once_cb_to (struct ev_timer *w, int revents)	1391	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1143	{	1392	{
1144	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1393	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1145	}	1394	}
1146		1395
1147	void	1396	void
1148	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1397	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1149	{	1398	{
1150	struct ev_once *once = malloc (sizeof (struct ev_once));	1399	struct ev_once *once = malloc (sizeof (struct ev_once));
1151		1400
1152	if (!once)	1401	if (!once)
1153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1402	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1158		1407
1159	ev_watcher_init (&once->io, once_cb_io);	1408	ev_watcher_init (&once->io, once_cb_io);
1160	if (fd >= 0)	1409	if (fd >= 0)
1161	{	1410	{
1162	ev_io_set (&once->io, fd, events);	1411	ev_io_set (&once->io, fd, events);
1163	ev_io_start (&once->io);	1412	ev_io_start (EV_A_ &once->io);
1164	}	1413	}
1165		1414
1166	ev_watcher_init (&once->to, once_cb_to);	1415	ev_watcher_init (&once->to, once_cb_to);
1167	if (timeout >= 0.)	1416	if (timeout >= 0.)
1168	{	1417	{
1169	ev_timer_set (&once->to, timeout, 0.);	1418	ev_timer_set (&once->to, timeout, 0.);
1170	ev_timer_start (&once->to);	1419	ev_timer_start (EV_A_ &once->to);
1171	}	1420	}
1172	}	1421	}
1173	}	1422	}
1174		1423
1175	/*****************************************************************************/
1176
1177	#if 0
1178
1179	struct ev_io wio;
1180
1181	static void
1182	sin_cb (struct ev_io *w, int revents)
1183	{
1184	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1185	}
1186
1187	static void
1188	ocb (struct ev_timer *w, int revents)
1189	{
1190	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1191	ev_timer_stop (w);
1192	ev_timer_start (w);
1193	}
1194
1195	static void
1196	scb (struct ev_signal *w, int revents)
1197	{
1198	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1199	ev_io_stop (&wio);
1200	ev_io_start (&wio);
1201	}
1202
1203	static void
1204	gcb (struct ev_signal *w, int revents)
1205	{
1206	fprintf (stderr, "generic %x\n", revents);
1207
1208	}
1209
1210	int main (void)
1211	{
1212	ev_init (0);
1213
1214	ev_io_init (&wio, sin_cb, 0, EV_READ);
1215	ev_io_start (&wio);
1216
1217	struct ev_timer t[10000];
1218
1219	#if 0
1220	int i;
1221	for (i = 0; i < 10000; ++i)
1222	{
1223	struct ev_timer *w = t + i;
1224	ev_watcher_init (w, ocb, i);
1225	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1226	ev_timer_start (w);
1227	if (drand48 () < 0.5)
1228	ev_timer_stop (w);
1229	}
1230	#endif
1231
1232	struct ev_timer t1;
1233	ev_timer_init (&t1, ocb, 5, 10);
1234	ev_timer_start (&t1);
1235
1236	struct ev_signal sig;
1237	ev_signal_init (&sig, scb, SIGQUIT);
1238	ev_signal_start (&sig);
1239
1240	struct ev_check cw;
1241	ev_check_init (&cw, gcb);
1242	ev_check_start (&cw);
1243
1244	struct ev_idle iw;
1245	ev_idle_init (&iw, gcb);
1246	ev_idle_start (&iw);
1247
1248	ev_loop (0);
1249
1250	return 0;
1251	}
1252
1253	#endif
1254
1255
1256
1257

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