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Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs.
Revision 1.63 by root, Sun Nov 4 22:03:17 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)	311	if (anfd->events != events)
267	{	312	{
268	method_modify (fd, anfd->events, events);	313	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	314	anfd->events = events;
270	}	315	}
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	#if EV_USE_WIN32
		643	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		644	#endif
		645	#if EV_USE_KQUEUE
		646	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		647	#endif
		648	#if EV_USE_EPOLL
		649	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		650	#endif
		651	#if EV_USE_POLL
		652	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		653	#endif
		654	#if EV_USE_SELECT
		655	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		656	#endif
		657
		658	method = 0;
		659	/*TODO*/
		660	}
		661
		662	void
		663	loop_fork (EV_P)
		664	{
		665	/*TODO*/
		666	#if EV_USE_EPOLL
		667	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		668	#endif
		669	#if EV_USE_KQUEUE
		670	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		671	#endif
		672	}
		673
		674	#if EV_MULTIPLICITY
		675	struct ev_loop *
		676	ev_loop_new (int methods)
		677	{
		678	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		679
		680	loop_init (EV_A_ methods);
		681
		682	if (ev_method (EV_A))
		683	return loop;
		684
		685	return 0;
		686	}
		687
		688	void
		689	ev_loop_destroy (EV_P)
		690	{
		691	loop_destroy (EV_A);
		692	free (loop);
		693	}
		694
		695	void
		696	ev_loop_fork (EV_P)
		697	{
		698	loop_fork (EV_A);
		699	}
		700
		701	#endif
		702
		703	#if EV_MULTIPLICITY
		704	struct ev_loop default_loop_struct;
		705	static struct ev_loop *default_loop;
		706
		707	struct ev_loop *
		708	#else
		709	static int default_loop;
		710
		711	int
		712	#endif
		713	ev_default_loop (int methods)
		714	{
		715	if (sigpipe [0] == sigpipe [1])
		716	if (pipe (sigpipe))
		717	return 0;
		718
		719	if (!default_loop)
		720	{
		721	#if EV_MULTIPLICITY
		722	struct ev_loop *loop = default_loop = &default_loop_struct;
		723	#else
		724	default_loop = 1;
		725	#endif
		726
		727	loop_init (EV_A_ methods);
		728
554	if (ev_method)	729	if (ev_method (EV_A))
555	{	730	{
556	ev_watcher_init (&sigev, sigcb);	731	ev_watcher_init (&sigev, sigcb);
		732	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	733	siginit (EV_A);
558		734
		735	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	736	ev_signal_init (&childev, childcb, SIGCHLD);
		737	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	738	ev_signal_start (EV_A_ &childev);
		739	ev_unref (EV_A); /* child watcher should not keep loop alive */
		740	#endif
561	}	741	}
		742	else
		743	default_loop = 0;
562	}	744	}
563		745
564	return ev_method;	746	return default_loop;
565	}	747	}
566		748
567	/*****************************************************************************/
568
569	void	749	void
570	ev_fork_prepare (void)	750	ev_default_destroy (void)
571	{	751	{
572	/* nop */	752	#if EV_MULTIPLICITY
573	}	753	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	754	#endif
588		755
		756	ev_ref (EV_A); /* child watcher */
		757	ev_signal_stop (EV_A_ &childev);
		758
		759	ev_ref (EV_A); /* signal watcher */
589	ev_io_stop (&sigev);	760	ev_io_stop (EV_A_ &sigev);
		761
		762	close (sigpipe [0]); sigpipe [0] = 0;
		763	close (sigpipe [1]); sigpipe [1] = 0;
		764
		765	loop_destroy (EV_A);
		766	}
		767
		768	void
		769	ev_default_fork (void)
		770	{
		771	#if EV_MULTIPLICITY
		772	struct ev_loop *loop = default_loop;
		773	#endif
		774
		775	loop_fork (EV_A);
		776
		777	ev_io_stop (EV_A_ &sigev);
590	close (sigpipe [0]);	778	close (sigpipe [0]);
591	close (sigpipe [1]);	779	close (sigpipe [1]);
592	pipe (sigpipe);	780	pipe (sigpipe);
		781
		782	ev_ref (EV_A); /* signal watcher */
593	siginit ();	783	siginit (EV_A);
594	}	784	}
595		785
596	/*****************************************************************************/	786	/*****************************************************************************/
597		787
598	static void	788	static void
599	call_pending (void)	789	call_pending (EV_P)
600	{	790	{
601	int pri;	791	int pri;
602		792
603	for (pri = NUMPRI; pri--; )	793	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	794	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	796	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		797
608	if (p->w)	798	if (p->w)
609	{	799	{
610	p->w->pending = 0;	800	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	801
		802	(*(void (**)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
612	}	803	}
613	}	804	}
614	}	805	}
615		806
616	static void	807	static void
617	timers_reify (void)	808	timers_reify (EV_P)
618	{	809	{
619	while (timercnt && timers [0]->at <= now)	810	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	811	{
621	struct ev_timer *w = timers [0];	812	struct ev_timer *w = timers [0];
		813
		814	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		815
623	/* first reschedule or stop timer */	816	/* first reschedule or stop timer */
624	if (w->repeat)	817	if (w->repeat)
625	{	818	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	819	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	820	((WT)w)->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	821	downheap ((WT *)timers, timercnt, 0);
629	}	822	}
630	else	823	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	824	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		825
633	event ((W)w, EV_TIMEOUT);	826	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	827	}
635	}	828	}
636		829
637	static void	830	static void
638	periodics_reify (void)	831	periodics_reify (EV_P)
639	{	832	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	833	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
641	{	834	{
642	struct ev_periodic *w = periodics [0];	835	struct ev_periodic *w = periodics [0];
		836
		837	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
643		838
644	/* first reschedule or stop timer */	839	/* first reschedule or stop timer */
645	if (w->interval)	840	if (w->interval)
646	{	841	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	842	((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));	843	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	844	downheap ((WT *)periodics, periodiccnt, 0);
650	}	845	}
651	else	846	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	847	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		848
654	event ((W)w, EV_PERIODIC);	849	event (EV_A_ (W)w, EV_PERIODIC);
655	}	850	}
656	}	851	}
657		852
658	static void	853	static void
659	periodics_reschedule (ev_tstamp diff)	854	periodics_reschedule (EV_P)
660	{	855	{
661	int i;	856	int i;
662		857
663	/* adjust periodics after time jump */	858	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	859	for (i = 0; i < periodiccnt; ++i)
665	{	860	{
666	struct ev_periodic *w = periodics [i];	861	struct ev_periodic *w = periodics [i];
667		862
668	if (w->interval)	863	if (w->interval)
669	{	864	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	865	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
671		866
672	if (fabs (diff) >= 1e-4)	867	if (fabs (diff) >= 1e-4)
673	{	868	{
674	ev_periodic_stop (w);	869	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	870	ev_periodic_start (EV_A_ w);
676		871
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	872	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	873	}
679	}	874	}
680	}	875	}
681	}	876	}
682		877
683	static int	878	inline int
684	time_update_monotonic (void)	879	time_update_monotonic (EV_P)
685	{	880	{
686	now = get_clock ();	881	mn_now = get_clock ();
687		882
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	883	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	884	{
690	ev_now = now + diff;	885	rt_now = rtmn_diff + mn_now;
691	return 0;	886	return 0;
692	}	887	}
693	else	888	else
694	{	889	{
695	now_floor = now;	890	now_floor = mn_now;
696	ev_now = ev_time ();	891	rt_now = ev_time ();
697	return 1;	892	return 1;
698	}	893	}
699	}	894	}
700		895
701	static void	896	static void
702	time_update (void)	897	time_update (EV_P)
703	{	898	{
704	int i;	899	int i;
705		900
706	#if EV_USE_MONOTONIC	901	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	902	if (expect_true (have_monotonic))
708	{	903	{
709	if (time_update_monotonic ())	904	if (time_update_monotonic (EV_A))
710	{	905	{
711	ev_tstamp odiff = diff;	906	ev_tstamp odiff = rtmn_diff;
712		907
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	908	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	909	{
715	diff = ev_now - now;	910	rtmn_diff = rt_now - mn_now;
716		911
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	912	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	913	return; /* all is well */
719		914
720	ev_now = ev_time ();	915	rt_now = ev_time ();
721	now = get_clock ();	916	mn_now = get_clock ();
722	now_floor = now;	917	now_floor = mn_now;
723	}	918	}
724		919
725	periodics_reschedule (diff - odiff);	920	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	921	/* no timer adjustment, as the monotonic clock doesn't jump */
		922	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	923	}
728	}	924	}
729	else	925	else
730	#endif	926	#endif
731	{	927	{
732	ev_now = ev_time ();	928	rt_now = ev_time ();
733		929
734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	930	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	931	{
736	periodics_reschedule (ev_now - now);	932	periodics_reschedule (EV_A);
737		933
738	/* adjust timers. this is easy, as the offset is the same for all */	934	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	935	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	936	((WT)timers [i])->at += rt_now - mn_now;
741	}	937	}
742		938
743	now = ev_now;	939	mn_now = rt_now;
744	}	940	}
745	}	941	}
746		942
747	int ev_loop_done;	943	void
		944	ev_ref (EV_P)
		945	{
		946	++activecnt;
		947	}
748		948
		949	void
		950	ev_unref (EV_P)
		951	{
		952	--activecnt;
		953	}
		954
		955	static int loop_done;
		956
		957	void
749	void ev_loop (int flags)	958	ev_loop (EV_P_ int flags)
750	{	959	{
751	double block;	960	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	961	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		962
754	do	963	do
755	{	964	{
756	/* queue check watchers (and execute them) */	965	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	966	if (expect_false (preparecnt))
758	{	967	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	968	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	969	call_pending (EV_A);
761	}	970	}
762		971
763	/* update fd-related kernel structures */	972	/* update fd-related kernel structures */
764	fd_reify ();	973	fd_reify (EV_A);
765		974
766	/* calculate blocking time */	975	/* calculate blocking time */
767		976
768	/* we only need this for !monotonic clockor timers, but as we basically	977	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	978	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	979	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	980	if (expect_true (have_monotonic))
772	time_update_monotonic ();	981	time_update_monotonic (EV_A);
773	else	982	else
774	#endif	983	#endif
775	{	984	{
776	ev_now = ev_time ();	985	rt_now = ev_time ();
777	now = ev_now;	986	mn_now = rt_now;
778	}	987	}
779		988
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	989	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	990	block = 0.;
782	else	991	else
783	{	992	{
784	block = MAX_BLOCKTIME;	993	block = MAX_BLOCKTIME;
785		994
786	if (timercnt)	995	if (timercnt)
787	{	996	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	997	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	998	if (block > to) block = to;
790	}	999	}
791		1000
792	if (periodiccnt)	1001	if (periodiccnt)
793	{	1002	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1003	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
795	if (block > to) block = to;	1004	if (block > to) block = to;
796	}	1005	}
797		1006
798	if (block < 0.) block = 0.;	1007	if (block < 0.) block = 0.;
799	}	1008	}
800		1009
801	method_poll (block);	1010	method_poll (EV_A_ block);
802		1011
803	/* update ev_now, do magic */	1012	/* update rt_now, do magic */
804	time_update ();	1013	time_update (EV_A);
805		1014
806	/* queue pending timers and reschedule them */	1015	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1016	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	1017	periodics_reify (EV_A); /* absolute timers called first */
809		1018
810	/* queue idle watchers unless io or timers are pending */	1019	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1020	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1021	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1022
814	/* queue check watchers, to be executed first */	1023	/* queue check watchers, to be executed first */
815	if (checkcnt)	1024	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1025	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1026
818	call_pending ();	1027	call_pending (EV_A);
819	}	1028	}
820	while (!ev_loop_done);	1029	while (activecnt && !loop_done);
821		1030
822	if (ev_loop_done != 2)	1031	if (loop_done != 2)
823	ev_loop_done = 0;	1032	loop_done = 0;
		1033	}
		1034
		1035	void
		1036	ev_unloop (EV_P_ int how)
		1037	{
		1038	loop_done = how;
824	}	1039	}
825		1040
826	/*****************************************************************************/	1041	/*****************************************************************************/
827		1042
828	static void	1043	inline void
829	wlist_add (WL *head, WL elem)	1044	wlist_add (WL *head, WL elem)
830	{	1045	{
831	elem->next = *head;	1046	elem->next = *head;
832	*head = elem;	1047	*head = elem;
833	}	1048	}
834		1049
835	static void	1050	inline void
836	wlist_del (WL *head, WL elem)	1051	wlist_del (WL *head, WL elem)
837	{	1052	{
838	while (*head)	1053	while (*head)
839	{	1054	{
840	if (*head == elem)	1055	if (*head == elem)
…		…
845		1060
846	head = &(*head)->next;	1061	head = &(*head)->next;
847	}	1062	}
848	}	1063	}
849		1064
850	static void	1065	inline void
851	ev_clear_pending (W w)	1066	ev_clear_pending (EV_P_ W w)
852	{	1067	{
853	if (w->pending)	1068	if (w->pending)
854	{	1069	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1070	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1071	w->pending = 0;
857	}	1072	}
858	}	1073	}
859		1074
860	static void	1075	inline void
861	ev_start (W w, int active)	1076	ev_start (EV_P_ W w, int active)
862	{	1077	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1078	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1079	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1080
866	w->active = active;	1081	w->active = active;
		1082	ev_ref (EV_A);
867	}	1083	}
868		1084
869	static void	1085	inline void
870	ev_stop (W w)	1086	ev_stop (EV_P_ W w)
871	{	1087	{
		1088	ev_unref (EV_A);
872	w->active = 0;	1089	w->active = 0;
873	}	1090	}
874		1091
875	/*****************************************************************************/	1092	/*****************************************************************************/
876		1093
877	void	1094	void
878	ev_io_start (struct ev_io *w)	1095	ev_io_start (EV_P_ struct ev_io *w)
879	{	1096	{
880	int fd = w->fd;	1097	int fd = w->fd;
881		1098
882	if (ev_is_active (w))	1099	if (ev_is_active (w))
883	return;	1100	return;
884		1101
885	assert (("ev_io_start called with negative fd", fd >= 0));	1102	assert (("ev_io_start called with negative fd", fd >= 0));
886		1103
887	ev_start ((W)w, 1);	1104	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1105	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1106	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1107
891	fd_change (fd);	1108	fd_change (EV_A_ fd);
892	}	1109	}
893		1110
894	void	1111	void
895	ev_io_stop (struct ev_io *w)	1112	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1113	{
897	ev_clear_pending ((W)w);	1114	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1115	if (!ev_is_active (w))
899	return;	1116	return;
900		1117
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1118	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1119	ev_stop (EV_A_ (W)w);
903		1120
904	fd_change (w->fd);	1121	fd_change (EV_A_ w->fd);
905	}	1122	}
906		1123
907	void	1124	void
908	ev_timer_start (struct ev_timer *w)	1125	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1126	{
910	if (ev_is_active (w))	1127	if (ev_is_active (w))
911	return;	1128	return;
912		1129
913	w->at += now;	1130	((WT)w)->at += mn_now;
914		1131
915	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1132	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
916		1133
917	ev_start ((W)w, ++timercnt);	1134	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1135	array_needsize (timers, timermax, timercnt, );
919	timers [timercnt - 1] = w;	1136	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1137	upheap ((WT *)timers, timercnt - 1);
921	}
922		1138
		1139	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1140	}
		1141
923	void	1142	void
924	ev_timer_stop (struct ev_timer *w)	1143	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1144	{
926	ev_clear_pending ((W)w);	1145	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1146	if (!ev_is_active (w))
928	return;	1147	return;
929		1148
		1149	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1150
930	if (w->active < timercnt--)	1151	if (((W)w)->active < timercnt--)
931	{	1152	{
932	timers [w->active - 1] = timers [timercnt];	1153	timers [((W)w)->active - 1] = timers [timercnt];
933	downheap ((WT *)timers, timercnt, w->active - 1);	1154	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
934	}	1155	}
935		1156
936	w->at = w->repeat;	1157	((WT)w)->at = w->repeat;
937		1158
938	ev_stop ((W)w);	1159	ev_stop (EV_A_ (W)w);
939	}	1160	}
940		1161
941	void	1162	void
942	ev_timer_again (struct ev_timer *w)	1163	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1164	{
944	if (ev_is_active (w))	1165	if (ev_is_active (w))
945	{	1166	{
946	if (w->repeat)	1167	if (w->repeat)
947	{	1168	{
948	w->at = now + w->repeat;	1169	((WT)w)->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1170	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
950	}	1171	}
951	else	1172	else
952	ev_timer_stop (w);	1173	ev_timer_stop (EV_A_ w);
953	}	1174	}
954	else if (w->repeat)	1175	else if (w->repeat)
955	ev_timer_start (w);	1176	ev_timer_start (EV_A_ w);
956	}	1177	}
957		1178
958	void	1179	void
959	ev_periodic_start (struct ev_periodic *w)	1180	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1181	{
961	if (ev_is_active (w))	1182	if (ev_is_active (w))
962	return;	1183	return;
963		1184
964	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1185	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
965		1186
966	/* this formula differs from the one in periodic_reify because we do not always round up */	1187	/* this formula differs from the one in periodic_reify because we do not always round up */
967	if (w->interval)	1188	if (w->interval)
968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1189	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
969		1190
970	ev_start ((W)w, ++periodiccnt);	1191	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1192	array_needsize (periodics, periodicmax, periodiccnt, );
972	periodics [periodiccnt - 1] = w;	1193	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1194	upheap ((WT *)periodics, periodiccnt - 1);
974	}
975		1195
		1196	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1197	}
		1198
976	void	1199	void
977	ev_periodic_stop (struct ev_periodic *w)	1200	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1201	{
979	ev_clear_pending ((W)w);	1202	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1203	if (!ev_is_active (w))
981	return;	1204	return;
982		1205
		1206	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1207
983	if (w->active < periodiccnt--)	1208	if (((W)w)->active < periodiccnt--)
984	{	1209	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1210	periodics [((W)w)->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1211	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
987	}	1212	}
988		1213
989	ev_stop ((W)w);	1214	ev_stop (EV_A_ (W)w);
990	}	1215	}
991		1216
992	void	1217	void
993	ev_signal_start (struct ev_signal *w)	1218	ev_idle_start (EV_P_ struct ev_idle *w)
994	{	1219	{
995	if (ev_is_active (w))	1220	if (ev_is_active (w))
996	return;	1221	return;
997		1222
		1223	ev_start (EV_A_ (W)w, ++idlecnt);
		1224	array_needsize (idles, idlemax, idlecnt, );
		1225	idles [idlecnt - 1] = w;
		1226	}
		1227
		1228	void
		1229	ev_idle_stop (EV_P_ struct ev_idle *w)
		1230	{
		1231	ev_clear_pending (EV_A_ (W)w);
		1232	if (ev_is_active (w))
		1233	return;
		1234
		1235	idles [((W)w)->active - 1] = idles [--idlecnt];
		1236	ev_stop (EV_A_ (W)w);
		1237	}
		1238
		1239	void
		1240	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1241	{
		1242	if (ev_is_active (w))
		1243	return;
		1244
		1245	ev_start (EV_A_ (W)w, ++preparecnt);
		1246	array_needsize (prepares, preparemax, preparecnt, );
		1247	prepares [preparecnt - 1] = w;
		1248	}
		1249
		1250	void
		1251	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1252	{
		1253	ev_clear_pending (EV_A_ (W)w);
		1254	if (ev_is_active (w))
		1255	return;
		1256
		1257	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1258	ev_stop (EV_A_ (W)w);
		1259	}
		1260
		1261	void
		1262	ev_check_start (EV_P_ struct ev_check *w)
		1263	{
		1264	if (ev_is_active (w))
		1265	return;
		1266
		1267	ev_start (EV_A_ (W)w, ++checkcnt);
		1268	array_needsize (checks, checkmax, checkcnt, );
		1269	checks [checkcnt - 1] = w;
		1270	}
		1271
		1272	void
		1273	ev_check_stop (EV_P_ struct ev_check *w)
		1274	{
		1275	ev_clear_pending (EV_A_ (W)w);
		1276	if (ev_is_active (w))
		1277	return;
		1278
		1279	checks [((W)w)->active - 1] = checks [--checkcnt];
		1280	ev_stop (EV_A_ (W)w);
		1281	}
		1282
		1283	#ifndef SA_RESTART
		1284	# define SA_RESTART 0
		1285	#endif
		1286
		1287	void
		1288	ev_signal_start (EV_P_ struct ev_signal *w)
		1289	{
		1290	#if EV_MULTIPLICITY
		1291	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1292	#endif
		1293	if (ev_is_active (w))
		1294	return;
		1295
998	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1296	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
999		1297
1000	ev_start ((W)w, 1);	1298	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1299	array_needsize (signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1300	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1301
1004	if (!w->next)	1302	if (!((WL)w)->next)
1005	{	1303	{
1006	struct sigaction sa;	1304	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1305	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1306	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1307	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1308	sigaction (w->signum, &sa, 0);
1011	}	1309	}
1012	}	1310	}
1013		1311
1014	void	1312	void
1015	ev_signal_stop (struct ev_signal *w)	1313	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1314	{
1017	ev_clear_pending ((W)w);	1315	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1316	if (!ev_is_active (w))
1019	return;	1317	return;
1020		1318
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1319	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1320	ev_stop (EV_A_ (W)w);
1023		1321
1024	if (!signals [w->signum - 1].head)	1322	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1323	signal (w->signum, SIG_DFL);
1026	}	1324	}
1027		1325
1028	void	1326	void
1029	ev_idle_start (struct ev_idle *w)	1327	ev_child_start (EV_P_ struct ev_child *w)
1030	{	1328	{
		1329	#if EV_MULTIPLICITY
		1330	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1331	#endif
1031	if (ev_is_active (w))	1332	if (ev_is_active (w))
1032	return;	1333	return;
1033		1334
1034	ev_start ((W)w, ++idlecnt);	1335	ev_start (EV_A_ (W)w, 1);
1035	array_needsize (idles, idlemax, idlecnt, );	1336	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1036	idles [idlecnt - 1] = w;
1037	}	1337	}
1038		1338
1039	void	1339	void
1040	ev_idle_stop (struct ev_idle *w)	1340	ev_child_stop (EV_P_ struct ev_child *w)
1041	{	1341	{
1042	ev_clear_pending ((W)w);	1342	ev_clear_pending (EV_A_ (W)w);
1043	if (ev_is_active (w))	1343	if (ev_is_active (w))
1044	return;	1344	return;
1045		1345
1046	idles [w->active - 1] = idles [--idlecnt];
1047	ev_stop ((W)w);
1048	}
1049
1050	void
1051	ev_prepare_start (struct ev_prepare *w)
1052	{
1053	if (ev_is_active (w))
1054	return;
1055
1056	ev_start ((W)w, ++preparecnt);
1057	array_needsize (prepares, preparemax, preparecnt, );
1058	prepares [preparecnt - 1] = w;
1059	}
1060
1061	void
1062	ev_prepare_stop (struct ev_prepare *w)
1063	{
1064	ev_clear_pending ((W)w);
1065	if (ev_is_active (w))
1066	return;
1067
1068	prepares [w->active - 1] = prepares [--preparecnt];
1069	ev_stop ((W)w);
1070	}
1071
1072	void
1073	ev_check_start (struct ev_check *w)
1074	{
1075	if (ev_is_active (w))
1076	return;
1077
1078	ev_start ((W)w, ++checkcnt);
1079	array_needsize (checks, checkmax, checkcnt, );
1080	checks [checkcnt - 1] = w;
1081	}
1082
1083	void
1084	ev_check_stop (struct ev_check *w)
1085	{
1086	ev_clear_pending ((W)w);
1087	if (ev_is_active (w))
1088	return;
1089
1090	checks [w->active - 1] = checks [--checkcnt];
1091	ev_stop ((W)w);
1092	}
1093
1094	void
1095	ev_child_start (struct ev_child *w)
1096	{
1097	if (ev_is_active (w))
1098	return;
1099
1100	ev_start ((W)w, 1);
1101	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1102	}
1103
1104	void
1105	ev_child_stop (struct ev_child *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1346	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1347	ev_stop (EV_A_ (W)w);
1113	}	1348	}
1114		1349
1115	/*****************************************************************************/	1350	/*****************************************************************************/
1116		1351
1117	struct ev_once	1352	struct ev_once
…		…
1121	void (*cb)(int revents, void *arg);	1356	void (*cb)(int revents, void *arg);
1122	void *arg;	1357	void *arg;
1123	};	1358	};
1124		1359
1125	static void	1360	static void
1126	once_cb (struct ev_once *once, int revents)	1361	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1362	{
1128	void (*cb)(int revents, void *arg) = once->cb;	1363	void (*cb)(int revents, void *arg) = once->cb;
1129	void *arg = once->arg;	1364	void *arg = once->arg;
1130		1365
1131	ev_io_stop (&once->io);	1366	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1367	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1368	free (once);
1134		1369
1135	cb (revents, arg);	1370	cb (revents, arg);
1136	}	1371	}
1137		1372
1138	static void	1373	static void
1139	once_cb_io (struct ev_io *w, int revents)	1374	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1375	{
1141	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1376	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1142	}	1377	}
1143		1378
1144	static void	1379	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1380	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1381	{
1147	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1382	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1148	}	1383	}
1149		1384
1150	void	1385	void
1151	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1386	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1152	{	1387	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1388	struct ev_once *once = malloc (sizeof (struct ev_once));
1154		1389
1155	if (!once)	1390	if (!once)
1156	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1391	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1161		1396
1162	ev_watcher_init (&once->io, once_cb_io);	1397	ev_watcher_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1398	if (fd >= 0)
1164	{	1399	{
1165	ev_io_set (&once->io, fd, events);	1400	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1401	ev_io_start (EV_A_ &once->io);
1167	}	1402	}
1168		1403
1169	ev_watcher_init (&once->to, once_cb_to);	1404	ev_watcher_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1405	if (timeout >= 0.)
1171	{	1406	{
1172	ev_timer_set (&once->to, timeout, 0.);	1407	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1408	ev_timer_start (EV_A_ &once->to);
1174	}	1409	}
1175	}	1410	}
1176	}	1411	}
1177		1412
1178	/*****************************************************************************/
1179
1180	#if 0
1181
1182	struct ev_io wio;
1183
1184	static void
1185	sin_cb (struct ev_io *w, int revents)
1186	{
1187	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1188	}
1189
1190	static void
1191	ocb (struct ev_timer *w, int revents)
1192	{
1193	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1194	ev_timer_stop (w);
1195	ev_timer_start (w);
1196	}
1197
1198	static void
1199	scb (struct ev_signal *w, int revents)
1200	{
1201	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1202	ev_io_stop (&wio);
1203	ev_io_start (&wio);
1204	}
1205
1206	static void
1207	gcb (struct ev_signal *w, int revents)
1208	{
1209	fprintf (stderr, "generic %x\n", revents);
1210
1211	}
1212
1213	int main (void)
1214	{
1215	ev_init (0);
1216
1217	ev_io_init (&wio, sin_cb, 0, EV_READ);
1218	ev_io_start (&wio);
1219
1220	struct ev_timer t[10000];
1221
1222	#if 0
1223	int i;
1224	for (i = 0; i < 10000; ++i)
1225	{
1226	struct ev_timer *w = t + i;
1227	ev_watcher_init (w, ocb, i);
1228	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1229	ev_timer_start (w);
1230	if (drand48 () < 0.5)
1231	ev_timer_stop (w);
1232	}
1233	#endif
1234
1235	struct ev_timer t1;
1236	ev_timer_init (&t1, ocb, 5, 10);
1237	ev_timer_start (&t1);
1238
1239	struct ev_signal sig;
1240	ev_signal_init (&sig, scb, SIGQUIT);
1241	ev_signal_start (&sig);
1242
1243	struct ev_check cw;
1244	ev_check_init (&cw, gcb);
1245	ev_check_start (&cw);
1246
1247	struct ev_idle iw;
1248	ev_idle_init (&iw, gcb);
1249	ev_idle_start (&iw);
1250
1251	ev_loop (0);
1252
1253	return 0;
1254	}
1255
1256	#endif
1257
1258
1259
1260

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