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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 1.64 by root, Sun Nov 4 23:14:11 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) \
…		…
167	cur = newcnt; \	234	cur = newcnt; \
168	}	235	}
169		236
170	/*****************************************************************************/	237	/*****************************************************************************/
171		238
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
182	static void	239	static void
183	anfds_init (ANFD *base, int count)	240	anfds_init (ANFD *base, int count)
184	{	241	{
185	while (count--)	242	while (count--)
186	{	243	{
…		…
190		247
191	++base;	248	++base;
192	}	249	}
193	}	250	}
194		251
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	252	static void
205	event (W w, int events)	253	event (EV_P_ W w, int events)
206	{	254	{
207	if (w->pending)	255	if (w->pending)
208	{	256	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	257	pendings [ABSPRI (w)][w->pending - 1].events |= events;
210	return;	258	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	263	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	264	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	265	}
218		266
219	static void	267	static void
220	queue_events (W *events, int eventcnt, int type)	268	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	269	{
222	int i;	270	int i;
223		271
224	for (i = 0; i < eventcnt; ++i)	272	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	273	event (EV_A_ events [i], type);
226	}	274	}
227		275
228	static void	276	static void
229	fd_event (int fd, int events)	277	fd_event (EV_P_ int fd, int events)
230	{	278	{
231	ANFD *anfd = anfds + fd;	279	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	280	struct ev_io *w;
233		281
234	for (w = anfd->head; w; w = w->next)	282	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	283	{
236	int ev = w->events & events;	284	int ev = w->events & events;
237		285
238	if (ev)	286	if (ev)
239	event ((W)w, ev);	287	event (EV_A_ (W)w, ev);
240	}	288	}
241	}	289	}
242		290
243	/*****************************************************************************/	291	/*****************************************************************************/
244		292
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	293	static void
249	fd_reify (void)	294	fd_reify (EV_P)
250	{	295	{
251	int i;	296	int i;
252		297
253	for (i = 0; i < fdchangecnt; ++i)	298	for (i = 0; i < fdchangecnt; ++i)
254	{	299	{
…		…
256	ANFD *anfd = anfds + fd;	301	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	302	struct ev_io *w;
258		303
259	int events = 0;	304	int events = 0;
260		305
261	for (w = anfd->head; w; w = w->next)	306	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	307	events |= w->events;
263		308
264	anfd->reify = 0;	309	anfd->reify = 0;
265		310
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	311	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	312	anfd->events = events;
270	}
271	}	313	}
272		314
273	fdchangecnt = 0;	315	fdchangecnt = 0;
274	}	316	}
275		317
276	static void	318	static void
277	fd_change (int fd)	319	fd_change (EV_P_ int fd)
278	{	320	{
279	if (anfds [fd].reify || fdchangecnt < 0)	321	if (anfds [fd].reify || fdchangecnt < 0)
280	return;	322	return;
281		323
282	anfds [fd].reify = 1;	324	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	327	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	328	fdchanges [fdchangecnt - 1] = fd;
287	}	329	}
288		330
289	static void	331	static void
290	fd_kill (int fd)	332	fd_kill (EV_P_ int fd)
291	{	333	{
292	struct ev_io *w;	334	struct ev_io *w;
293		335
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	336	while ((w = (struct ev_io *)anfds [fd].head))
296	{	337	{
297	ev_io_stop (w);	338	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	339	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	340	}
300	}	341	}
301		342
302	/* called on EBADF to verify fds */	343	/* called on EBADF to verify fds */
303	static void	344	static void
304	fd_ebadf (void)	345	fd_ebadf (EV_P)
305	{	346	{
306	int fd;	347	int fd;
307		348
308	for (fd = 0; fd < anfdmax; ++fd)	349	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	350	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	351	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	352	fd_kill (EV_A_ fd);
312	}	353	}
313		354
314	/* called on ENOMEM in select/poll to kill some fds and retry */	355	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	356	static void
316	fd_enomem (void)	357	fd_enomem (EV_P)
317	{	358	{
318	int fd = anfdmax;	359	int fd;
319		360
320	while (fd--)	361	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	362	if (anfds [fd].events)
322	{	363	{
323	close (fd);	364	close (fd);
324	fd_kill (fd);	365	fd_kill (EV_A_ fd);
325	return;	366	return;
326	}	367	}
327	}	368	}
328		369
		370	/* susually called after fork if method needs to re-arm all fds from scratch */
		371	static void
		372	fd_rearm_all (EV_P)
		373	{
		374	int fd;
		375
		376	/* this should be highly optimised to not do anything but set a flag */
		377	for (fd = 0; fd < anfdmax; ++fd)
		378	if (anfds [fd].events)
		379	{
		380	anfds [fd].events = 0;
		381	fd_change (EV_A_ fd);
		382	}
		383	}
		384
329	/*****************************************************************************/	385	/*****************************************************************************/
330		386
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	387	static void
338	upheap (WT *timers, int k)	388	upheap (WT *heap, int k)
339	{	389	{
340	WT w = timers [k];	390	WT w = heap [k];
341		391
342	while (k && timers [k >> 1]->at > w->at)	392	while (k && heap [k >> 1]->at > w->at)
343	{	393	{
344	timers [k] = timers [k >> 1];	394	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	395	((W)heap [k])->active = k + 1;
346	k >>= 1;	396	k >>= 1;
347	}	397	}
348		398
349	timers [k] = w;	399	heap [k] = w;
350	timers [k]->active = k + 1;	400	((W)heap [k])->active = k + 1;
351		401
352	}	402	}
353		403
354	static void	404	static void
355	downheap (WT *timers, int N, int k)	405	downheap (WT *heap, int N, int k)
356	{	406	{
357	WT w = timers [k];	407	WT w = heap [k];
358		408
359	while (k < (N >> 1))	409	while (k < (N >> 1))
360	{	410	{
361	int j = k << 1;	411	int j = k << 1;
362		412
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	413	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	414	++j;
365		415
366	if (w->at <= timers [j]->at)	416	if (w->at <= heap [j]->at)
367	break;	417	break;
368		418
369	timers [k] = timers [j];	419	heap [k] = heap [j];
370	timers [k]->active = k + 1;	420	((W)heap [k])->active = k + 1;
371	k = j;	421	k = j;
372	}	422	}
373		423
374	timers [k] = w;	424	heap [k] = w;
375	timers [k]->active = k + 1;	425	((W)heap [k])->active = k + 1;
376	}	426	}
377		427
378	/*****************************************************************************/	428	/*****************************************************************************/
379		429
380	typedef struct	430	typedef struct
381	{	431	{
382	struct ev_signal *head;	432	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	433	sig_atomic_t volatile gotsig;
384	} ANSIG;	434	} ANSIG;
385		435
386	static ANSIG *signals;	436	static ANSIG *signals;
387	static int signalmax;	437	static int signalmax;
…		…
407	{	457	{
408	signals [signum - 1].gotsig = 1;	458	signals [signum - 1].gotsig = 1;
409		459
410	if (!gotsig)	460	if (!gotsig)
411	{	461	{
		462	int old_errno = errno;
412	gotsig = 1;	463	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	464	write (sigpipe [1], &signum, 1);
		465	errno = old_errno;
414	}	466	}
415	}	467	}
416		468
417	static void	469	static void
418	sigcb (struct ev_io *iow, int revents)	470	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	471	{
420	struct ev_signal *w;	472	struct ev_watcher_list *w;
421	int signum;	473	int signum;
422		474
423	read (sigpipe [0], &revents, 1);	475	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	476	gotsig = 0;
425		477
…		…
427	if (signals [signum].gotsig)	479	if (signals [signum].gotsig)
428	{	480	{
429	signals [signum].gotsig = 0;	481	signals [signum].gotsig = 0;
430		482
431	for (w = signals [signum].head; w; w = w->next)	483	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	484	event (EV_A_ (W)w, EV_SIGNAL);
433	}	485	}
434	}	486	}
435		487
436	static void	488	static void
437	siginit (void)	489	siginit (EV_P)
438	{	490	{
		491	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	492	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	493	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		494
442	/* rather than sort out wether we really need nb, set it */	495	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	496	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	497	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		498	#endif
445		499
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	500	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	501	ev_io_start (EV_A_ &sigev);
		502	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	503	}
449		504
450	/*****************************************************************************/	505	/*****************************************************************************/
451		506
452	static struct ev_idle **idles;	507	#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		508
463	static struct ev_child *childs [PID_HASHSIZE];	509	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;	510	static struct ev_signal childev;
465		511
466	#ifndef WCONTINUED	512	#ifndef WCONTINUED
467	# define WCONTINUED 0	513	# define WCONTINUED 0
468	#endif	514	#endif
469		515
470	static void	516	static void
471	childcb (struct ev_signal *sw, int revents)	517	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	518	{
473	struct ev_child *w;	519	struct ev_child *w;
		520
		521	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		522	if (w->pid == pid || !w->pid)
		523	{
		524	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		525	w->rpid = pid;
		526	w->rstatus = status;
		527	event (EV_A_ (W)w, EV_CHILD);
		528	}
		529	}
		530
		531	static void
		532	childcb (EV_P_ struct ev_signal *sw, int revents)
		533	{
474	int pid, status;	534	int pid, status;
475		535
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	536	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	537	{
478	if (w->pid == pid || !w->pid)	538	/* make sure we are called again until all childs have been reaped */
479	{	539	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	540
481	event ((W)w, EV_CHILD);	541	child_reap (EV_A_ sw, pid, pid, status);
482	}	542	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		543	}
483	}	544	}
		545
		546	#endif
484		547
485	/*****************************************************************************/	548	/*****************************************************************************/
486		549
		550	#if EV_USE_KQUEUE
		551	# include "ev_kqueue.c"
		552	#endif
487	#if EV_USE_EPOLL	553	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	554	# include "ev_epoll.c"
489	#endif	555	#endif
490	#if EV_USE_POLL	556	#if EV_USE_POLL
491	# include "ev_poll.c"	557	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	570	ev_version_minor (void)
505	{	571	{
506	return EV_VERSION_MINOR;	572	return EV_VERSION_MINOR;
507	}	573	}
508		574
509	/* return true if we are running with elevated privileges and ignore env variables */	575	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	576	static int
511	enable_secure ()	577	enable_secure (void)
512	{	578	{
		579	#ifdef WIN32
		580	return 0;
		581	#else
513	return getuid () != geteuid ()	582	return getuid () != geteuid ()
514	|| getgid () != getegid ();	583	|| getgid () != getegid ();
		584	#endif
515	}	585	}
516		586
517	int ev_init (int methods)	587	int
		588	ev_method (EV_P)
518	{	589	{
		590	return method;
		591	}
		592
		593	static void
		594	loop_init (EV_P_ int methods)
		595	{
519	if (!ev_method)	596	if (!method)
520	{	597	{
521	#if EV_USE_MONOTONIC	598	#if EV_USE_MONOTONIC
522	{	599	{
523	struct timespec ts;	600	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	602	have_monotonic = 1;
526	}	603	}
527	#endif	604	#endif
528		605
529	ev_now = ev_time ();	606	rt_now = ev_time ();
530	now = get_clock ();	607	mn_now = get_clock ();
531	now_floor = now;	608	now_floor = mn_now;
532	diff = ev_now - now;	609	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		610
537	if (methods == EVMETHOD_AUTO)	611	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	612	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	613	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	614	else
541	methods = EVMETHOD_ANY;	615	methods = EVMETHOD_ANY;
542		616
543	ev_method = 0;	617	method = 0;
		618	#if EV_USE_WIN32
		619	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		620	#endif
		621	#if EV_USE_KQUEUE
		622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		623	#endif
544	#if EV_USE_EPOLL	624	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	626	#endif
547	#if EV_USE_POLL	627	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	629	#endif
550	#if EV_USE_SELECT	630	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	632	#endif
		633	}
		634	}
553		635
		636	void
		637	loop_destroy (EV_P)
		638	{
		639	#if EV_USE_WIN32
		640	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		641	#endif
		642	#if EV_USE_KQUEUE
		643	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		644	#endif
		645	#if EV_USE_EPOLL
		646	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		647	#endif
		648	#if EV_USE_POLL
		649	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		650	#endif
		651	#if EV_USE_SELECT
		652	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		653	#endif
		654
		655	method = 0;
		656	/*TODO*/
		657	}
		658
		659	void
		660	loop_fork (EV_P)
		661	{
		662	/*TODO*/
		663	#if EV_USE_EPOLL
		664	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		665	#endif
		666	#if EV_USE_KQUEUE
		667	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		668	#endif
		669	}
		670
		671	#if EV_MULTIPLICITY
		672	struct ev_loop *
		673	ev_loop_new (int methods)
		674	{
		675	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		676
		677	loop_init (EV_A_ methods);
		678
		679	if (ev_method (EV_A))
		680	return loop;
		681
		682	return 0;
		683	}
		684
		685	void
		686	ev_loop_destroy (EV_P)
		687	{
		688	loop_destroy (EV_A);
		689	free (loop);
		690	}
		691
		692	void
		693	ev_loop_fork (EV_P)
		694	{
		695	loop_fork (EV_A);
		696	}
		697
		698	#endif
		699
		700	#if EV_MULTIPLICITY
		701	struct ev_loop default_loop_struct;
		702	static struct ev_loop *default_loop;
		703
		704	struct ev_loop *
		705	#else
		706	static int default_loop;
		707
		708	int
		709	#endif
		710	ev_default_loop (int methods)
		711	{
		712	if (sigpipe [0] == sigpipe [1])
		713	if (pipe (sigpipe))
		714	return 0;
		715
		716	if (!default_loop)
		717	{
		718	#if EV_MULTIPLICITY
		719	struct ev_loop *loop = default_loop = &default_loop_struct;
		720	#else
		721	default_loop = 1;
		722	#endif
		723
		724	loop_init (EV_A_ methods);
		725
554	if (ev_method)	726	if (ev_method (EV_A))
555	{	727	{
556	ev_watcher_init (&sigev, sigcb);	728	ev_watcher_init (&sigev, sigcb);
		729	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	730	siginit (EV_A);
558		731
		732	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	733	ev_signal_init (&childev, childcb, SIGCHLD);
		734	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	735	ev_signal_start (EV_A_ &childev);
		736	ev_unref (EV_A); /* child watcher should not keep loop alive */
		737	#endif
561	}	738	}
		739	else
		740	default_loop = 0;
562	}	741	}
563		742
564	return ev_method;	743	return default_loop;
565	}	744	}
566		745
567	/*****************************************************************************/
568
569	void	746	void
570	ev_fork_prepare (void)	747	ev_default_destroy (void)
571	{	748	{
572	/* nop */	749	#if EV_MULTIPLICITY
573	}	750	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	751	#endif
588		752
		753	ev_ref (EV_A); /* child watcher */
		754	ev_signal_stop (EV_A_ &childev);
		755
		756	ev_ref (EV_A); /* signal watcher */
589	ev_io_stop (&sigev);	757	ev_io_stop (EV_A_ &sigev);
		758
		759	close (sigpipe [0]); sigpipe [0] = 0;
		760	close (sigpipe [1]); sigpipe [1] = 0;
		761
		762	loop_destroy (EV_A);
		763	}
		764
		765	void
		766	ev_default_fork (void)
		767	{
		768	#if EV_MULTIPLICITY
		769	struct ev_loop *loop = default_loop;
		770	#endif
		771
		772	loop_fork (EV_A);
		773
		774	ev_io_stop (EV_A_ &sigev);
590	close (sigpipe [0]);	775	close (sigpipe [0]);
591	close (sigpipe [1]);	776	close (sigpipe [1]);
592	pipe (sigpipe);	777	pipe (sigpipe);
		778
		779	ev_ref (EV_A); /* signal watcher */
593	siginit ();	780	siginit (EV_A);
594	}	781	}
595		782
596	/*****************************************************************************/	783	/*****************************************************************************/
597		784
598	static void	785	static void
599	call_pending (void)	786	call_pending (EV_P)
600	{	787	{
601	int pri;	788	int pri;
602		789
603	for (pri = NUMPRI; pri--; )	790	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	791	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		794
608	if (p->w)	795	if (p->w)
609	{	796	{
610	p->w->pending = 0;	797	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	798
		799	(*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
612	}	800	}
613	}	801	}
614	}	802	}
615		803
616	static void	804	static void
617	timers_reify (void)	805	timers_reify (EV_P)
618	{	806	{
619	while (timercnt && timers [0]->at <= now)	807	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	808	{
621	struct ev_timer *w = timers [0];	809	struct ev_timer *w = timers [0];
		810
		811	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		812
623	/* first reschedule or stop timer */	813	/* first reschedule or stop timer */
624	if (w->repeat)	814	if (w->repeat)
625	{	815	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	816	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	817	((WT)w)->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	818	downheap ((WT *)timers, timercnt, 0);
629	}	819	}
630	else	820	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	821	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		822
633	event ((W)w, EV_TIMEOUT);	823	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	824	}
635	}	825	}
636		826
637	static void	827	static void
638	periodics_reify (void)	828	periodics_reify (EV_P)
639	{	829	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	830	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
641	{	831	{
642	struct ev_periodic *w = periodics [0];	832	struct ev_periodic *w = periodics [0];
		833
		834	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
643		835
644	/* first reschedule or stop timer */	836	/* first reschedule or stop timer */
645	if (w->interval)	837	if (w->interval)
646	{	838	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	839	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	840	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	841	downheap ((WT *)periodics, periodiccnt, 0);
650	}	842	}
651	else	843	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	844	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		845
654	event ((W)w, EV_PERIODIC);	846	event (EV_A_ (W)w, EV_PERIODIC);
655	}	847	}
656	}	848	}
657		849
658	static void	850	static void
659	periodics_reschedule (ev_tstamp diff)	851	periodics_reschedule (EV_P)
660	{	852	{
661	int i;	853	int i;
662		854
663	/* adjust periodics after time jump */	855	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	856	for (i = 0; i < periodiccnt; ++i)
665	{	857	{
666	struct ev_periodic *w = periodics [i];	858	struct ev_periodic *w = periodics [i];
667		859
668	if (w->interval)	860	if (w->interval)
669	{	861	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	862	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
671		863
672	if (fabs (diff) >= 1e-4)	864	if (fabs (diff) >= 1e-4)
673	{	865	{
674	ev_periodic_stop (w);	866	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	867	ev_periodic_start (EV_A_ w);
676		868
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	869	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	870	}
679	}	871	}
680	}	872	}
681	}	873	}
682		874
683	static int	875	inline int
684	time_update_monotonic (void)	876	time_update_monotonic (EV_P)
685	{	877	{
686	now = get_clock ();	878	mn_now = get_clock ();
687		879
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	880	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	881	{
690	ev_now = now + diff;	882	rt_now = rtmn_diff + mn_now;
691	return 0;	883	return 0;
692	}	884	}
693	else	885	else
694	{	886	{
695	now_floor = now;	887	now_floor = mn_now;
696	ev_now = ev_time ();	888	rt_now = ev_time ();
697	return 1;	889	return 1;
698	}	890	}
699	}	891	}
700		892
701	static void	893	static void
702	time_update (void)	894	time_update (EV_P)
703	{	895	{
704	int i;	896	int i;
705		897
706	#if EV_USE_MONOTONIC	898	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	899	if (expect_true (have_monotonic))
708	{	900	{
709	if (time_update_monotonic ())	901	if (time_update_monotonic (EV_A))
710	{	902	{
711	ev_tstamp odiff = diff;	903	ev_tstamp odiff = rtmn_diff;
712		904
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	905	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	906	{
715	diff = ev_now - now;	907	rtmn_diff = rt_now - mn_now;
716		908
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	909	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	910	return; /* all is well */
719		911
720	ev_now = ev_time ();	912	rt_now = ev_time ();
721	now = get_clock ();	913	mn_now = get_clock ();
722	now_floor = now;	914	now_floor = mn_now;
723	}	915	}
724		916
725	periodics_reschedule (diff - odiff);	917	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	918	/* no timer adjustment, as the monotonic clock doesn't jump */
		919	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	920	}
728	}	921	}
729	else	922	else
730	#endif	923	#endif
731	{	924	{
732	ev_now = ev_time ();	925	rt_now = ev_time ();
733		926
734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	927	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	928	{
736	periodics_reschedule (ev_now - now);	929	periodics_reschedule (EV_A);
737		930
738	/* adjust timers. this is easy, as the offset is the same for all */	931	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	932	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	933	((WT)timers [i])->at += rt_now - mn_now;
741	}	934	}
742		935
743	now = ev_now;	936	mn_now = rt_now;
744	}	937	}
745	}	938	}
746		939
747	int ev_loop_done;	940	void
		941	ev_ref (EV_P)
		942	{
		943	++activecnt;
		944	}
748		945
		946	void
		947	ev_unref (EV_P)
		948	{
		949	--activecnt;
		950	}
		951
		952	static int loop_done;
		953
		954	void
749	void ev_loop (int flags)	955	ev_loop (EV_P_ int flags)
750	{	956	{
751	double block;	957	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	958	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		959
754	do	960	do
755	{	961	{
756	/* queue check watchers (and execute them) */	962	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	963	if (expect_false (preparecnt))
758	{	964	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	965	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	966	call_pending (EV_A);
761	}	967	}
762		968
763	/* update fd-related kernel structures */	969	/* update fd-related kernel structures */
764	fd_reify ();	970	fd_reify (EV_A);
765		971
766	/* calculate blocking time */	972	/* calculate blocking time */
767		973
768	/* we only need this for !monotonic clockor timers, but as we basically	974	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	975	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	976	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	977	if (expect_true (have_monotonic))
772	time_update_monotonic ();	978	time_update_monotonic (EV_A);
773	else	979	else
774	#endif	980	#endif
775	{	981	{
776	ev_now = ev_time ();	982	rt_now = ev_time ();
777	now = ev_now;	983	mn_now = rt_now;
778	}	984	}
779		985
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	986	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	987	block = 0.;
782	else	988	else
783	{	989	{
784	block = MAX_BLOCKTIME;	990	block = MAX_BLOCKTIME;
785		991
786	if (timercnt)	992	if (timercnt)
787	{	993	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	994	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	995	if (block > to) block = to;
790	}	996	}
791		997
792	if (periodiccnt)	998	if (periodiccnt)
793	{	999	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1000	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
795	if (block > to) block = to;	1001	if (block > to) block = to;
796	}	1002	}
797		1003
798	if (block < 0.) block = 0.;	1004	if (block < 0.) block = 0.;
799	}	1005	}
800		1006
801	method_poll (block);	1007	method_poll (EV_A_ block);
802		1008
803	/* update ev_now, do magic */	1009	/* update rt_now, do magic */
804	time_update ();	1010	time_update (EV_A);
805		1011
806	/* queue pending timers and reschedule them */	1012	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1013	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	1014	periodics_reify (EV_A); /* absolute timers called first */
809		1015
810	/* queue idle watchers unless io or timers are pending */	1016	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1017	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1018	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1019
814	/* queue check watchers, to be executed first */	1020	/* queue check watchers, to be executed first */
815	if (checkcnt)	1021	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1023
818	call_pending ();	1024	call_pending (EV_A);
819	}	1025	}
820	while (!ev_loop_done);	1026	while (activecnt && !loop_done);
821		1027
822	if (ev_loop_done != 2)	1028	if (loop_done != 2)
823	ev_loop_done = 0;	1029	loop_done = 0;
		1030	}
		1031
		1032	void
		1033	ev_unloop (EV_P_ int how)
		1034	{
		1035	loop_done = how;
824	}	1036	}
825		1037
826	/*****************************************************************************/	1038	/*****************************************************************************/
827		1039
828	static void	1040	inline void
829	wlist_add (WL *head, WL elem)	1041	wlist_add (WL *head, WL elem)
830	{	1042	{
831	elem->next = *head;	1043	elem->next = *head;
832	*head = elem;	1044	*head = elem;
833	}	1045	}
834		1046
835	static void	1047	inline void
836	wlist_del (WL *head, WL elem)	1048	wlist_del (WL *head, WL elem)
837	{	1049	{
838	while (*head)	1050	while (*head)
839	{	1051	{
840	if (*head == elem)	1052	if (*head == elem)
…		…
845		1057
846	head = &(*head)->next;	1058	head = &(*head)->next;
847	}	1059	}
848	}	1060	}
849		1061
850	static void	1062	inline void
851	ev_clear_pending (W w)	1063	ev_clear_pending (EV_P_ W w)
852	{	1064	{
853	if (w->pending)	1065	if (w->pending)
854	{	1066	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1067	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1068	w->pending = 0;
857	}	1069	}
858	}	1070	}
859		1071
860	static void	1072	inline void
861	ev_start (W w, int active)	1073	ev_start (EV_P_ W w, int active)
862	{	1074	{
		1075	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1076	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1077
863	w->active = active;	1078	w->active = active;
		1079	ev_ref (EV_A);
864	}	1080	}
865		1081
866	static void	1082	inline void
867	ev_stop (W w)	1083	ev_stop (EV_P_ W w)
868	{	1084	{
		1085	ev_unref (EV_A);
869	w->active = 0;	1086	w->active = 0;
870	}	1087	}
871		1088
872	/*****************************************************************************/	1089	/*****************************************************************************/
873		1090
874	void	1091	void
875	ev_io_start (struct ev_io *w)	1092	ev_io_start (EV_P_ struct ev_io *w)
876	{	1093	{
877	int fd = w->fd;	1094	int fd = w->fd;
878		1095
879	if (ev_is_active (w))	1096	if (ev_is_active (w))
880	return;	1097	return;
881		1098
882	assert (("ev_io_start called with negative fd", fd >= 0));	1099	assert (("ev_io_start called with negative fd", fd >= 0));
883		1100
884	ev_start ((W)w, 1);	1101	ev_start (EV_A_ (W)w, 1);
885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1102	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
886	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1103	wlist_add ((WL *)&anfds[fd].head, (WL)w);
887		1104
888	fd_change (fd);	1105	fd_change (EV_A_ fd);
889	}	1106	}
890		1107
891	void	1108	void
892	ev_io_stop (struct ev_io *w)	1109	ev_io_stop (EV_P_ struct ev_io *w)
893	{	1110	{
894	ev_clear_pending ((W)w);	1111	ev_clear_pending (EV_A_ (W)w);
895	if (!ev_is_active (w))	1112	if (!ev_is_active (w))
896	return;	1113	return;
897		1114
898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1115	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
899	ev_stop ((W)w);	1116	ev_stop (EV_A_ (W)w);
900		1117
901	fd_change (w->fd);	1118	fd_change (EV_A_ w->fd);
902	}	1119	}
903		1120
904	void	1121	void
905	ev_timer_start (struct ev_timer *w)	1122	ev_timer_start (EV_P_ struct ev_timer *w)
906	{	1123	{
907	if (ev_is_active (w))	1124	if (ev_is_active (w))
908	return;	1125	return;
909		1126
910	w->at += now;	1127	((WT)w)->at += mn_now;
911		1128
912	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1129	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
913		1130
914	ev_start ((W)w, ++timercnt);	1131	ev_start (EV_A_ (W)w, ++timercnt);
915	array_needsize (timers, timermax, timercnt, );	1132	array_needsize (timers, timermax, timercnt, );
916	timers [timercnt - 1] = w;	1133	timers [timercnt - 1] = w;
917	upheap ((WT *)timers, timercnt - 1);	1134	upheap ((WT *)timers, timercnt - 1);
918	}
919		1135
		1136	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1137	}
		1138
920	void	1139	void
921	ev_timer_stop (struct ev_timer *w)	1140	ev_timer_stop (EV_P_ struct ev_timer *w)
922	{	1141	{
923	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
924	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
925	return;	1144	return;
926		1145
		1146	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1147
927	if (w->active < timercnt--)	1148	if (((W)w)->active < timercnt--)
928	{	1149	{
929	timers [w->active - 1] = timers [timercnt];	1150	timers [((W)w)->active - 1] = timers [timercnt];
930	downheap ((WT *)timers, timercnt, w->active - 1);	1151	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
931	}	1152	}
932		1153
933	w->at = w->repeat;	1154	((WT)w)->at = w->repeat;
934		1155
935	ev_stop ((W)w);	1156	ev_stop (EV_A_ (W)w);
936	}	1157	}
937		1158
938	void	1159	void
939	ev_timer_again (struct ev_timer *w)	1160	ev_timer_again (EV_P_ struct ev_timer *w)
940	{	1161	{
941	if (ev_is_active (w))	1162	if (ev_is_active (w))
942	{	1163	{
943	if (w->repeat)	1164	if (w->repeat)
944	{	1165	{
945	w->at = now + w->repeat;	1166	((WT)w)->at = mn_now + w->repeat;
946	downheap ((WT *)timers, timercnt, w->active - 1);	1167	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
947	}	1168	}
948	else	1169	else
949	ev_timer_stop (w);	1170	ev_timer_stop (EV_A_ w);
950	}	1171	}
951	else if (w->repeat)	1172	else if (w->repeat)
952	ev_timer_start (w);	1173	ev_timer_start (EV_A_ w);
953	}	1174	}
954		1175
955	void	1176	void
956	ev_periodic_start (struct ev_periodic *w)	1177	ev_periodic_start (EV_P_ struct ev_periodic *w)
957	{	1178	{
958	if (ev_is_active (w))	1179	if (ev_is_active (w))
959	return;	1180	return;
960		1181
961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1182	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
962		1183
963	/* this formula differs from the one in periodic_reify because we do not always round up */	1184	/* this formula differs from the one in periodic_reify because we do not always round up */
964	if (w->interval)	1185	if (w->interval)
965	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1186	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
966		1187
967	ev_start ((W)w, ++periodiccnt);	1188	ev_start (EV_A_ (W)w, ++periodiccnt);
968	array_needsize (periodics, periodicmax, periodiccnt, );	1189	array_needsize (periodics, periodicmax, periodiccnt, );
969	periodics [periodiccnt - 1] = w;	1190	periodics [periodiccnt - 1] = w;
970	upheap ((WT *)periodics, periodiccnt - 1);	1191	upheap ((WT *)periodics, periodiccnt - 1);
971	}
972		1192
		1193	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1194	}
		1195
973	void	1196	void
974	ev_periodic_stop (struct ev_periodic *w)	1197	ev_periodic_stop (EV_P_ struct ev_periodic *w)
975	{	1198	{
976	ev_clear_pending ((W)w);	1199	ev_clear_pending (EV_A_ (W)w);
977	if (!ev_is_active (w))	1200	if (!ev_is_active (w))
978	return;	1201	return;
979		1202
		1203	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1204
980	if (w->active < periodiccnt--)	1205	if (((W)w)->active < periodiccnt--)
981	{	1206	{
982	periodics [w->active - 1] = periodics [periodiccnt];	1207	periodics [((W)w)->active - 1] = periodics [periodiccnt];
983	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1208	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
984	}	1209	}
985		1210
986	ev_stop ((W)w);	1211	ev_stop (EV_A_ (W)w);
987	}	1212	}
988		1213
989	void	1214	void
990	ev_signal_start (struct ev_signal *w)	1215	ev_idle_start (EV_P_ struct ev_idle *w)
991	{	1216	{
992	if (ev_is_active (w))	1217	if (ev_is_active (w))
993	return;	1218	return;
994		1219
		1220	ev_start (EV_A_ (W)w, ++idlecnt);
		1221	array_needsize (idles, idlemax, idlecnt, );
		1222	idles [idlecnt - 1] = w;
		1223	}
		1224
		1225	void
		1226	ev_idle_stop (EV_P_ struct ev_idle *w)
		1227	{
		1228	ev_clear_pending (EV_A_ (W)w);
		1229	if (ev_is_active (w))
		1230	return;
		1231
		1232	idles [((W)w)->active - 1] = idles [--idlecnt];
		1233	ev_stop (EV_A_ (W)w);
		1234	}
		1235
		1236	void
		1237	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1238	{
		1239	if (ev_is_active (w))
		1240	return;
		1241
		1242	ev_start (EV_A_ (W)w, ++preparecnt);
		1243	array_needsize (prepares, preparemax, preparecnt, );
		1244	prepares [preparecnt - 1] = w;
		1245	}
		1246
		1247	void
		1248	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1249	{
		1250	ev_clear_pending (EV_A_ (W)w);
		1251	if (ev_is_active (w))
		1252	return;
		1253
		1254	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1255	ev_stop (EV_A_ (W)w);
		1256	}
		1257
		1258	void
		1259	ev_check_start (EV_P_ struct ev_check *w)
		1260	{
		1261	if (ev_is_active (w))
		1262	return;
		1263
		1264	ev_start (EV_A_ (W)w, ++checkcnt);
		1265	array_needsize (checks, checkmax, checkcnt, );
		1266	checks [checkcnt - 1] = w;
		1267	}
		1268
		1269	void
		1270	ev_check_stop (EV_P_ struct ev_check *w)
		1271	{
		1272	ev_clear_pending (EV_A_ (W)w);
		1273	if (ev_is_active (w))
		1274	return;
		1275
		1276	checks [((W)w)->active - 1] = checks [--checkcnt];
		1277	ev_stop (EV_A_ (W)w);
		1278	}
		1279
		1280	#ifndef SA_RESTART
		1281	# define SA_RESTART 0
		1282	#endif
		1283
		1284	void
		1285	ev_signal_start (EV_P_ struct ev_signal *w)
		1286	{
		1287	#if EV_MULTIPLICITY
		1288	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1289	#endif
		1290	if (ev_is_active (w))
		1291	return;
		1292
995	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1293	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
996		1294
997	ev_start ((W)w, 1);	1295	ev_start (EV_A_ (W)w, 1);
998	array_needsize (signals, signalmax, w->signum, signals_init);	1296	array_needsize (signals, signalmax, w->signum, signals_init);
999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1297	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1000		1298
1001	if (!w->next)	1299	if (!((WL)w)->next)
1002	{	1300	{
1003	struct sigaction sa;	1301	struct sigaction sa;
1004	sa.sa_handler = sighandler;	1302	sa.sa_handler = sighandler;
1005	sigfillset (&sa.sa_mask);	1303	sigfillset (&sa.sa_mask);
1006	sa.sa_flags = 0;	1304	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1007	sigaction (w->signum, &sa, 0);	1305	sigaction (w->signum, &sa, 0);
1008	}	1306	}
1009	}	1307	}
1010		1308
1011	void	1309	void
1012	ev_signal_stop (struct ev_signal *w)	1310	ev_signal_stop (EV_P_ struct ev_signal *w)
1013	{	1311	{
1014	ev_clear_pending ((W)w);	1312	ev_clear_pending (EV_A_ (W)w);
1015	if (!ev_is_active (w))	1313	if (!ev_is_active (w))
1016	return;	1314	return;
1017		1315
1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1316	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1019	ev_stop ((W)w);	1317	ev_stop (EV_A_ (W)w);
1020		1318
1021	if (!signals [w->signum - 1].head)	1319	if (!signals [w->signum - 1].head)
1022	signal (w->signum, SIG_DFL);	1320	signal (w->signum, SIG_DFL);
1023	}	1321	}
1024		1322
1025	void	1323	void
1026	ev_idle_start (struct ev_idle *w)	1324	ev_child_start (EV_P_ struct ev_child *w)
1027	{	1325	{
		1326	#if EV_MULTIPLICITY
		1327	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1328	#endif
1028	if (ev_is_active (w))	1329	if (ev_is_active (w))
1029	return;	1330	return;
1030		1331
1031	ev_start ((W)w, ++idlecnt);	1332	ev_start (EV_A_ (W)w, 1);
1032	array_needsize (idles, idlemax, idlecnt, );	1333	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1033	idles [idlecnt - 1] = w;
1034	}	1334	}
1035		1335
1036	void	1336	void
1037	ev_idle_stop (struct ev_idle *w)	1337	ev_child_stop (EV_P_ struct ev_child *w)
1038	{	1338	{
1039	ev_clear_pending ((W)w);	1339	ev_clear_pending (EV_A_ (W)w);
1040	if (ev_is_active (w))	1340	if (ev_is_active (w))
1041	return;	1341	return;
1042		1342
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);	1343	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1109	ev_stop ((W)w);	1344	ev_stop (EV_A_ (W)w);
1110	}	1345	}
1111		1346
1112	/*****************************************************************************/	1347	/*****************************************************************************/
1113		1348
1114	struct ev_once	1349	struct ev_once
…		…
1118	void (*cb)(int revents, void *arg);	1353	void (*cb)(int revents, void *arg);
1119	void *arg;	1354	void *arg;
1120	};	1355	};
1121		1356
1122	static void	1357	static void
1123	once_cb (struct ev_once *once, int revents)	1358	once_cb (EV_P_ struct ev_once *once, int revents)
1124	{	1359	{
1125	void (*cb)(int revents, void *arg) = once->cb;	1360	void (*cb)(int revents, void *arg) = once->cb;
1126	void *arg = once->arg;	1361	void *arg = once->arg;
1127		1362
1128	ev_io_stop (&once->io);	1363	ev_io_stop (EV_A_ &once->io);
1129	ev_timer_stop (&once->to);	1364	ev_timer_stop (EV_A_ &once->to);
1130	free (once);	1365	free (once);
1131		1366
1132	cb (revents, arg);	1367	cb (revents, arg);
1133	}	1368	}
1134		1369
1135	static void	1370	static void
1136	once_cb_io (struct ev_io *w, int revents)	1371	once_cb_io (EV_P_ struct ev_io *w, int revents)
1137	{	1372	{
1138	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1373	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1139	}	1374	}
1140		1375
1141	static void	1376	static void
1142	once_cb_to (struct ev_timer *w, int revents)	1377	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1143	{	1378	{
1144	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1379	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1145	}	1380	}
1146		1381
1147	void	1382	void
1148	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1149	{	1384	{
1150	struct ev_once *once = malloc (sizeof (struct ev_once));	1385	struct ev_once *once = malloc (sizeof (struct ev_once));
1151		1386
1152	if (!once)	1387	if (!once)
1153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1388	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1158		1393
1159	ev_watcher_init (&once->io, once_cb_io);	1394	ev_watcher_init (&once->io, once_cb_io);
1160	if (fd >= 0)	1395	if (fd >= 0)
1161	{	1396	{
1162	ev_io_set (&once->io, fd, events);	1397	ev_io_set (&once->io, fd, events);
1163	ev_io_start (&once->io);	1398	ev_io_start (EV_A_ &once->io);
1164	}	1399	}
1165		1400
1166	ev_watcher_init (&once->to, once_cb_to);	1401	ev_watcher_init (&once->to, once_cb_to);
1167	if (timeout >= 0.)	1402	if (timeout >= 0.)
1168	{	1403	{
1169	ev_timer_set (&once->to, timeout, 0.);	1404	ev_timer_set (&once->to, timeout, 0.);
1170	ev_timer_start (&once->to);	1405	ev_timer_start (EV_A_ &once->to);
1171	}	1406	}
1172	}	1407	}
1173	}	1408	}
1174		1409
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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