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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 1.65 by root, Sun Nov 4 23:29:48 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
42	#include <stdio.h>	64	#include <stdio.h>
43		65
44	#include <assert.h>	66	#include <assert.h>
45	#include <errno.h>	67	#include <errno.h>
46	#include <sys/types.h>	68	#include <sys/types.h>
		69	#ifndef WIN32
47	#include <sys/wait.h>	70	# include <sys/wait.h>
		71	#endif
48	#include <sys/time.h>	72	#include <sys/time.h>
49	#include <time.h>	73	#include <time.h>
50		74
51	/**/	75	/**/
52		76
…		…
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	87	#endif
64		88
65	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
		91	#endif
		92
		93	#ifndef EV_USE_KQUEUE
		94	# define EV_USE_KQUEUE 0
		95	#endif
		96
		97	#ifndef EV_USE_WIN32
		98	# ifdef WIN32
		99	# define EV_USE_WIN32 1
		100	# else
		101	# define EV_USE_WIN32 0
		102	# endif
67	#endif	103	#endif
68		104
69	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
71	#endif	107	#endif
…		…
107		143
108	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
111		147
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115
116	static int have_monotonic; /* runtime */
117
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		149
122	/*****************************************************************************/	150	/*****************************************************************************/
123		151
124	ev_tstamp	152	typedef struct
		153	{
		154	struct ev_watcher_list *head;
		155	unsigned char events;
		156	unsigned char reify;
		157	} ANFD;
		158
		159	typedef struct
		160	{
		161	W w;
		162	int events;
		163	} ANPENDING;
		164
		165	#if EV_MULTIPLICITY
		166
		167	struct ev_loop
		168	{
		169	# define VAR(name,decl) decl;
		170	# include "ev_vars.h"
		171	};
		172	# undef VAR
		173	# include "ev_wrap.h"
		174
		175	#else
		176
		177	# define VAR(name,decl) static decl;
		178	# include "ev_vars.h"
		179	# undef VAR
		180
		181	#endif
		182
		183	/*****************************************************************************/
		184
		185	inline ev_tstamp
125	ev_time (void)	186	ev_time (void)
126	{	187	{
127	#if EV_USE_REALTIME	188	#if EV_USE_REALTIME
128	struct timespec ts;	189	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	190	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	194	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	195	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	196	#endif
136	}	197	}
137		198
138	static ev_tstamp	199	inline ev_tstamp
139	get_clock (void)	200	get_clock (void)
140	{	201	{
141	#if EV_USE_MONOTONIC	202	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	203	if (expect_true (have_monotonic))
143	{	204	{
…		…
146	return ts.tv_sec + ts.tv_nsec * 1e-9;	207	return ts.tv_sec + ts.tv_nsec * 1e-9;
147	}	208	}
148	#endif	209	#endif
149		210
150	return ev_time ();	211	return ev_time ();
		212	}
		213
		214	ev_tstamp
		215	ev_now (EV_P)
		216	{
		217	return rt_now;
151	}	218	}
152		219
153	#define array_roundsize(base,n) ((n) | 4 & ~3)	220	#define array_roundsize(base,n) ((n) | 4 & ~3)
154		221
155	#define array_needsize(base,cur,cnt,init) \	222	#define array_needsize(base,cur,cnt,init) \
…		…
165	base = realloc (base, sizeof (*base) * (newcnt)); \	232	base = realloc (base, sizeof (*base) * (newcnt)); \
166	init (base + cur, newcnt - cur); \	233	init (base + cur, newcnt - cur); \
167	cur = newcnt; \	234	cur = newcnt; \
168	}	235	}
169		236
		237	#define array_free(stem, idx) \
		238	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		239
170	/*****************************************************************************/	240	/*****************************************************************************/
171
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181		241
182	static void	242	static void
183	anfds_init (ANFD *base, int count)	243	anfds_init (ANFD *base, int count)
184	{	244	{
185	while (count--)	245	while (count--)
…		…
190		250
191	++base;	251	++base;
192	}	252	}
193	}	253	}
194		254
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	255	static void
205	event (W w, int events)	256	event (EV_P_ W w, int events)
206	{	257	{
207	if (w->pending)	258	if (w->pending)
208	{	259	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	260	pendings [ABSPRI (w)][w->pending - 1].events |= events;
210	return;	261	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	266	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	267	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	268	}
218		269
219	static void	270	static void
220	queue_events (W *events, int eventcnt, int type)	271	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	272	{
222	int i;	273	int i;
223		274
224	for (i = 0; i < eventcnt; ++i)	275	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	276	event (EV_A_ events [i], type);
226	}	277	}
227		278
228	static void	279	static void
229	fd_event (int fd, int events)	280	fd_event (EV_P_ int fd, int events)
230	{	281	{
231	ANFD *anfd = anfds + fd;	282	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	283	struct ev_io *w;
233		284
234	for (w = anfd->head; w; w = w->next)	285	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	286	{
236	int ev = w->events & events;	287	int ev = w->events & events;
237		288
238	if (ev)	289	if (ev)
239	event ((W)w, ev);	290	event (EV_A_ (W)w, ev);
240	}	291	}
241	}	292	}
242		293
243	/*****************************************************************************/	294	/*****************************************************************************/
244		295
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	296	static void
249	fd_reify (void)	297	fd_reify (EV_P)
250	{	298	{
251	int i;	299	int i;
252		300
253	for (i = 0; i < fdchangecnt; ++i)	301	for (i = 0; i < fdchangecnt; ++i)
254	{	302	{
…		…
256	ANFD *anfd = anfds + fd;	304	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	305	struct ev_io *w;
258		306
259	int events = 0;	307	int events = 0;
260		308
261	for (w = anfd->head; w; w = w->next)	309	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	310	events |= w->events;
263		311
264	anfd->reify = 0;	312	anfd->reify = 0;
265		313
266	if (anfd->events != events)
267	{
268	method_modify (fd, anfd->events, events);	314	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	315	anfd->events = events;
270	}
271	}	316	}
272		317
273	fdchangecnt = 0;	318	fdchangecnt = 0;
274	}	319	}
275		320
276	static void	321	static void
277	fd_change (int fd)	322	fd_change (EV_P_ int fd)
278	{	323	{
279	if (anfds [fd].reify || fdchangecnt < 0)	324	if (anfds [fd].reify || fdchangecnt < 0)
280	return;	325	return;
281		326
282	anfds [fd].reify = 1;	327	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	331	fdchanges [fdchangecnt - 1] = fd;
287	}	332	}
288		333
289	static void	334	static void
290	fd_kill (int fd)	335	fd_kill (EV_P_ int fd)
291	{	336	{
292	struct ev_io *w;	337	struct ev_io *w;
293		338
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	339	while ((w = (struct ev_io *)anfds [fd].head))
296	{	340	{
297	ev_io_stop (w);	341	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	342	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	343	}
300	}	344	}
301		345
302	/* called on EBADF to verify fds */	346	/* called on EBADF to verify fds */
303	static void	347	static void
304	fd_ebadf (void)	348	fd_ebadf (EV_P)
305	{	349	{
306	int fd;	350	int fd;
307		351
308	for (fd = 0; fd < anfdmax; ++fd)	352	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	353	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	355	fd_kill (EV_A_ fd);
312	}	356	}
313		357
314	/* called on ENOMEM in select/poll to kill some fds and retry */	358	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	359	static void
316	fd_enomem (void)	360	fd_enomem (EV_P)
317	{	361	{
318	int fd = anfdmax;	362	int fd;
319		363
320	while (fd--)	364	for (fd = anfdmax; fd--; )
321	if (anfds [fd].events)	365	if (anfds [fd].events)
322	{	366	{
323	close (fd);	367	close (fd);
324	fd_kill (fd);	368	fd_kill (EV_A_ fd);
325	return;	369	return;
326	}	370	}
327	}	371	}
328		372
		373	/* susually called after fork if method needs to re-arm all fds from scratch */
		374	static void
		375	fd_rearm_all (EV_P)
		376	{
		377	int fd;
		378
		379	/* this should be highly optimised to not do anything but set a flag */
		380	for (fd = 0; fd < anfdmax; ++fd)
		381	if (anfds [fd].events)
		382	{
		383	anfds [fd].events = 0;
		384	fd_change (EV_A_ fd);
		385	}
		386	}
		387
329	/*****************************************************************************/	388	/*****************************************************************************/
330		389
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	390	static void
338	upheap (WT *timers, int k)	391	upheap (WT *heap, int k)
339	{	392	{
340	WT w = timers [k];	393	WT w = heap [k];
341		394
342	while (k && timers [k >> 1]->at > w->at)	395	while (k && heap [k >> 1]->at > w->at)
343	{	396	{
344	timers [k] = timers [k >> 1];	397	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	398	((W)heap [k])->active = k + 1;
346	k >>= 1;	399	k >>= 1;
347	}	400	}
348		401
349	timers [k] = w;	402	heap [k] = w;
350	timers [k]->active = k + 1;	403	((W)heap [k])->active = k + 1;
351		404
352	}	405	}
353		406
354	static void	407	static void
355	downheap (WT *timers, int N, int k)	408	downheap (WT *heap, int N, int k)
356	{	409	{
357	WT w = timers [k];	410	WT w = heap [k];
358		411
359	while (k < (N >> 1))	412	while (k < (N >> 1))
360	{	413	{
361	int j = k << 1;	414	int j = k << 1;
362		415
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	416	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	417	++j;
365		418
366	if (w->at <= timers [j]->at)	419	if (w->at <= heap [j]->at)
367	break;	420	break;
368		421
369	timers [k] = timers [j];	422	heap [k] = heap [j];
370	timers [k]->active = k + 1;	423	((W)heap [k])->active = k + 1;
371	k = j;	424	k = j;
372	}	425	}
373		426
374	timers [k] = w;	427	heap [k] = w;
375	timers [k]->active = k + 1;	428	((W)heap [k])->active = k + 1;
376	}	429	}
377		430
378	/*****************************************************************************/	431	/*****************************************************************************/
379		432
380	typedef struct	433	typedef struct
381	{	434	{
382	struct ev_signal *head;	435	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	436	sig_atomic_t volatile gotsig;
384	} ANSIG;	437	} ANSIG;
385		438
386	static ANSIG *signals;	439	static ANSIG *signals;
387	static int signalmax;	440	static int signalmax;
…		…
407	{	460	{
408	signals [signum - 1].gotsig = 1;	461	signals [signum - 1].gotsig = 1;
409		462
410	if (!gotsig)	463	if (!gotsig)
411	{	464	{
		465	int old_errno = errno;
412	gotsig = 1;	466	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	467	write (sigpipe [1], &signum, 1);
		468	errno = old_errno;
414	}	469	}
415	}	470	}
416		471
417	static void	472	static void
418	sigcb (struct ev_io *iow, int revents)	473	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	474	{
420	struct ev_signal *w;	475	struct ev_watcher_list *w;
421	int signum;	476	int signum;
422		477
423	read (sigpipe [0], &revents, 1);	478	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	479	gotsig = 0;
425		480
…		…
427	if (signals [signum].gotsig)	482	if (signals [signum].gotsig)
428	{	483	{
429	signals [signum].gotsig = 0;	484	signals [signum].gotsig = 0;
430		485
431	for (w = signals [signum].head; w; w = w->next)	486	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	487	event (EV_A_ (W)w, EV_SIGNAL);
433	}	488	}
434	}	489	}
435		490
436	static void	491	static void
437	siginit (void)	492	siginit (EV_P)
438	{	493	{
		494	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		497
442	/* rather than sort out wether we really need nb, set it */	498	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		501	#endif
445		502
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	503	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	504	ev_io_start (EV_A_ &sigev);
		505	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	506	}
449		507
450	/*****************************************************************************/	508	/*****************************************************************************/
451		509
452	static struct ev_idle **idles;	510	#ifndef WIN32
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462		511
463	static struct ev_child *childs [PID_HASHSIZE];	512	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;	513	static struct ev_signal childev;
465		514
466	#ifndef WCONTINUED	515	#ifndef WCONTINUED
467	# define WCONTINUED 0	516	# define WCONTINUED 0
468	#endif	517	#endif
469		518
470	static void	519	static void
471	childcb (struct ev_signal *sw, int revents)	520	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	521	{
473	struct ev_child *w;	522	struct ev_child *w;
		523
		524	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		525	if (w->pid == pid || !w->pid)
		526	{
		527	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
		528	w->rpid = pid;
		529	w->rstatus = status;
		530	event (EV_A_ (W)w, EV_CHILD);
		531	}
		532	}
		533
		534	static void
		535	childcb (EV_P_ struct ev_signal *sw, int revents)
		536	{
474	int pid, status;	537	int pid, status;
475		538
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	540	{
478	if (w->pid == pid || !w->pid)	541	/* make sure we are called again until all childs have been reaped */
479	{	542	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	543
481	event ((W)w, EV_CHILD);	544	child_reap (EV_A_ sw, pid, pid, status);
482	}	545	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		546	}
483	}	547	}
		548
		549	#endif
484		550
485	/*****************************************************************************/	551	/*****************************************************************************/
486		552
		553	#if EV_USE_KQUEUE
		554	# include "ev_kqueue.c"
		555	#endif
487	#if EV_USE_EPOLL	556	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	557	# include "ev_epoll.c"
489	#endif	558	#endif
490	#if EV_USE_POLL	559	#if EV_USE_POLL
491	# include "ev_poll.c"	560	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	573	ev_version_minor (void)
505	{	574	{
506	return EV_VERSION_MINOR;	575	return EV_VERSION_MINOR;
507	}	576	}
508		577
509	/* return true if we are running with elevated privileges and ignore env variables */	578	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	579	static int
511	enable_secure ()	580	enable_secure (void)
512	{	581	{
		582	#ifdef WIN32
		583	return 0;
		584	#else
513	return getuid () != geteuid ()	585	return getuid () != geteuid ()
514	|| getgid () != getegid ();	586	|| getgid () != getegid ();
		587	#endif
515	}	588	}
516		589
517	int ev_init (int methods)	590	int
		591	ev_method (EV_P)
518	{	592	{
		593	return method;
		594	}
		595
		596	static void
		597	loop_init (EV_P_ int methods)
		598	{
519	if (!ev_method)	599	if (!method)
520	{	600	{
521	#if EV_USE_MONOTONIC	601	#if EV_USE_MONOTONIC
522	{	602	{
523	struct timespec ts;	603	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	605	have_monotonic = 1;
526	}	606	}
527	#endif	607	#endif
528		608
529	ev_now = ev_time ();	609	rt_now = ev_time ();
530	now = get_clock ();	610	mn_now = get_clock ();
531	now_floor = now;	611	now_floor = mn_now;
532	diff = ev_now - now;	612	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		613
537	if (methods == EVMETHOD_AUTO)	614	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	616	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	617	else
541	methods = EVMETHOD_ANY;	618	methods = EVMETHOD_ANY;
542		619
543	ev_method = 0;	620	method = 0;
		621	#if EV_USE_WIN32
		622	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		623	#endif
		624	#if EV_USE_KQUEUE
		625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		626	#endif
544	#if EV_USE_EPOLL	627	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	629	#endif
547	#if EV_USE_POLL	630	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	632	#endif
550	#if EV_USE_SELECT	633	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	635	#endif
		636	}
		637	}
553		638
		639	void
		640	loop_destroy (EV_P)
		641	{
		642	int i;
		643
		644	#if EV_USE_WIN32
		645	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		646	#endif
		647	#if EV_USE_KQUEUE
		648	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		649	#endif
		650	#if EV_USE_EPOLL
		651	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		652	#endif
		653	#if EV_USE_POLL
		654	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		655	#endif
		656	#if EV_USE_SELECT
		657	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		658	#endif
		659
		660	for (i = NUMPRI; i--; )
		661	array_free (pending, [i]);
		662
		663	array_free (fdchange, );
		664	array_free (timer, );
		665	array_free (periodic, );
		666	array_free (idle, );
		667	array_free (prepare, );
		668	array_free (check, );
		669
		670	method = 0;
		671	/*TODO*/
		672	}
		673
		674	void
		675	loop_fork (EV_P)
		676	{
		677	/*TODO*/
		678	#if EV_USE_EPOLL
		679	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		680	#endif
		681	#if EV_USE_KQUEUE
		682	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		683	#endif
		684	}
		685
		686	#if EV_MULTIPLICITY
		687	struct ev_loop *
		688	ev_loop_new (int methods)
		689	{
		690	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		691
		692	loop_init (EV_A_ methods);
		693
		694	if (ev_method (EV_A))
		695	return loop;
		696
		697	return 0;
		698	}
		699
		700	void
		701	ev_loop_destroy (EV_P)
		702	{
		703	loop_destroy (EV_A);
		704	free (loop);
		705	}
		706
		707	void
		708	ev_loop_fork (EV_P)
		709	{
		710	loop_fork (EV_A);
		711	}
		712
		713	#endif
		714
		715	#if EV_MULTIPLICITY
		716	struct ev_loop default_loop_struct;
		717	static struct ev_loop *default_loop;
		718
		719	struct ev_loop *
		720	#else
		721	static int default_loop;
		722
		723	int
		724	#endif
		725	ev_default_loop (int methods)
		726	{
		727	if (sigpipe [0] == sigpipe [1])
		728	if (pipe (sigpipe))
		729	return 0;
		730
		731	if (!default_loop)
		732	{
		733	#if EV_MULTIPLICITY
		734	struct ev_loop *loop = default_loop = &default_loop_struct;
		735	#else
		736	default_loop = 1;
		737	#endif
		738
		739	loop_init (EV_A_ methods);
		740
554	if (ev_method)	741	if (ev_method (EV_A))
555	{	742	{
556	ev_watcher_init (&sigev, sigcb);	743	ev_watcher_init (&sigev, sigcb);
		744	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	745	siginit (EV_A);
558		746
		747	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	748	ev_signal_init (&childev, childcb, SIGCHLD);
		749	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	750	ev_signal_start (EV_A_ &childev);
		751	ev_unref (EV_A); /* child watcher should not keep loop alive */
		752	#endif
561	}	753	}
		754	else
		755	default_loop = 0;
562	}	756	}
563		757
564	return ev_method;	758	return default_loop;
565	}	759	}
566		760
567	/*****************************************************************************/
568
569	void	761	void
570	ev_fork_prepare (void)	762	ev_default_destroy (void)
571	{	763	{
572	/* nop */	764	#if EV_MULTIPLICITY
573	}	765	struct ev_loop *loop = default_loop;
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif	766	#endif
588		767
		768	ev_ref (EV_A); /* child watcher */
		769	ev_signal_stop (EV_A_ &childev);
		770
		771	ev_ref (EV_A); /* signal watcher */
589	ev_io_stop (&sigev);	772	ev_io_stop (EV_A_ &sigev);
		773
		774	close (sigpipe [0]); sigpipe [0] = 0;
		775	close (sigpipe [1]); sigpipe [1] = 0;
		776
		777	loop_destroy (EV_A);
		778	}
		779
		780	void
		781	ev_default_fork (void)
		782	{
		783	#if EV_MULTIPLICITY
		784	struct ev_loop *loop = default_loop;
		785	#endif
		786
		787	loop_fork (EV_A);
		788
		789	ev_io_stop (EV_A_ &sigev);
590	close (sigpipe [0]);	790	close (sigpipe [0]);
591	close (sigpipe [1]);	791	close (sigpipe [1]);
592	pipe (sigpipe);	792	pipe (sigpipe);
		793
		794	ev_ref (EV_A); /* signal watcher */
593	siginit ();	795	siginit (EV_A);
594	}	796	}
595		797
596	/*****************************************************************************/	798	/*****************************************************************************/
597		799
598	static void	800	static void
599	call_pending (void)	801	call_pending (EV_P)
600	{	802	{
601	int pri;	803	int pri;
602		804
603	for (pri = NUMPRI; pri--; )	805	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	806	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	808	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		809
608	if (p->w)	810	if (p->w)
609	{	811	{
610	p->w->pending = 0;	812	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	813
		814	((void (*)(EV_P_ W, int))p->w->cb) (EV_A_ p->w, p->events);
612	}	815	}
613	}	816	}
614	}	817	}
615		818
616	static void	819	static void
617	timers_reify (void)	820	timers_reify (EV_P)
618	{	821	{
619	while (timercnt && timers [0]->at <= now)	822	while (timercnt && ((WT)timers [0])->at <= mn_now)
620	{	823	{
621	struct ev_timer *w = timers [0];	824	struct ev_timer *w = timers [0];
		825
		826	assert (("inactive timer on timer heap detected", ev_is_active (w)));
622		827
623	/* first reschedule or stop timer */	828	/* first reschedule or stop timer */
624	if (w->repeat)	829	if (w->repeat)
625	{	830	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	831	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	832	((WT)w)->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	833	downheap ((WT *)timers, timercnt, 0);
629	}	834	}
630	else	835	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	836	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		837
633	event ((W)w, EV_TIMEOUT);	838	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	839	}
635	}	840	}
636		841
637	static void	842	static void
638	periodics_reify (void)	843	periodics_reify (EV_P)
639	{	844	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	845	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
641	{	846	{
642	struct ev_periodic *w = periodics [0];	847	struct ev_periodic *w = periodics [0];
		848
		849	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
643		850
644	/* first reschedule or stop timer */	851	/* first reschedule or stop timer */
645	if (w->interval)	852	if (w->interval)
646	{	853	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	854	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	855	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	856	downheap ((WT *)periodics, periodiccnt, 0);
650	}	857	}
651	else	858	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	859	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		860
654	event ((W)w, EV_PERIODIC);	861	event (EV_A_ (W)w, EV_PERIODIC);
655	}	862	}
656	}	863	}
657		864
658	static void	865	static void
659	periodics_reschedule (ev_tstamp diff)	866	periodics_reschedule (EV_P)
660	{	867	{
661	int i;	868	int i;
662		869
663	/* adjust periodics after time jump */	870	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	871	for (i = 0; i < periodiccnt; ++i)
665	{	872	{
666	struct ev_periodic *w = periodics [i];	873	struct ev_periodic *w = periodics [i];
667		874
668	if (w->interval)	875	if (w->interval)
669	{	876	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	877	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
671		878
672	if (fabs (diff) >= 1e-4)	879	if (fabs (diff) >= 1e-4)
673	{	880	{
674	ev_periodic_stop (w);	881	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	882	ev_periodic_start (EV_A_ w);
676		883
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	884	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	885	}
679	}	886	}
680	}	887	}
681	}	888	}
682		889
683	static int	890	inline int
684	time_update_monotonic (void)	891	time_update_monotonic (EV_P)
685	{	892	{
686	now = get_clock ();	893	mn_now = get_clock ();
687		894
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	895	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	896	{
690	ev_now = now + diff;	897	rt_now = rtmn_diff + mn_now;
691	return 0;	898	return 0;
692	}	899	}
693	else	900	else
694	{	901	{
695	now_floor = now;	902	now_floor = mn_now;
696	ev_now = ev_time ();	903	rt_now = ev_time ();
697	return 1;	904	return 1;
698	}	905	}
699	}	906	}
700		907
701	static void	908	static void
702	time_update (void)	909	time_update (EV_P)
703	{	910	{
704	int i;	911	int i;
705		912
706	#if EV_USE_MONOTONIC	913	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	914	if (expect_true (have_monotonic))
708	{	915	{
709	if (time_update_monotonic ())	916	if (time_update_monotonic (EV_A))
710	{	917	{
711	ev_tstamp odiff = diff;	918	ev_tstamp odiff = rtmn_diff;
712		919
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	920	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	921	{
715	diff = ev_now - now;	922	rtmn_diff = rt_now - mn_now;
716		923
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	924	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	925	return; /* all is well */
719		926
720	ev_now = ev_time ();	927	rt_now = ev_time ();
721	now = get_clock ();	928	mn_now = get_clock ();
722	now_floor = now;	929	now_floor = mn_now;
723	}	930	}
724		931
725	periodics_reschedule (diff - odiff);	932	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	933	/* no timer adjustment, as the monotonic clock doesn't jump */
		934	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	935	}
728	}	936	}
729	else	937	else
730	#endif	938	#endif
731	{	939	{
732	ev_now = ev_time ();	940	rt_now = ev_time ();
733		941
734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	942	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	943	{
736	periodics_reschedule (ev_now - now);	944	periodics_reschedule (EV_A);
737		945
738	/* adjust timers. this is easy, as the offset is the same for all */	946	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	947	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	948	((WT)timers [i])->at += rt_now - mn_now;
741	}	949	}
742		950
743	now = ev_now;	951	mn_now = rt_now;
744	}	952	}
745	}	953	}
746		954
747	int ev_loop_done;	955	void
		956	ev_ref (EV_P)
		957	{
		958	++activecnt;
		959	}
748		960
		961	void
		962	ev_unref (EV_P)
		963	{
		964	--activecnt;
		965	}
		966
		967	static int loop_done;
		968
		969	void
749	void ev_loop (int flags)	970	ev_loop (EV_P_ int flags)
750	{	971	{
751	double block;	972	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	973	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		974
754	do	975	do
755	{	976	{
756	/* queue check watchers (and execute them) */	977	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	978	if (expect_false (preparecnt))
758	{	979	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	980	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	981	call_pending (EV_A);
761	}	982	}
762		983
763	/* update fd-related kernel structures */	984	/* update fd-related kernel structures */
764	fd_reify ();	985	fd_reify (EV_A);
765		986
766	/* calculate blocking time */	987	/* calculate blocking time */
767		988
768	/* we only need this for !monotonic clockor timers, but as we basically	989	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	990	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	991	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	992	if (expect_true (have_monotonic))
772	time_update_monotonic ();	993	time_update_monotonic (EV_A);
773	else	994	else
774	#endif	995	#endif
775	{	996	{
776	ev_now = ev_time ();	997	rt_now = ev_time ();
777	now = ev_now;	998	mn_now = rt_now;
778	}	999	}
779		1000
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	1001	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	1002	block = 0.;
782	else	1003	else
783	{	1004	{
784	block = MAX_BLOCKTIME;	1005	block = MAX_BLOCKTIME;
785		1006
786	if (timercnt)	1007	if (timercnt)
787	{	1008	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	1009	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
789	if (block > to) block = to;	1010	if (block > to) block = to;
790	}	1011	}
791		1012
792	if (periodiccnt)	1013	if (periodiccnt)
793	{	1014	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1015	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
795	if (block > to) block = to;	1016	if (block > to) block = to;
796	}	1017	}
797		1018
798	if (block < 0.) block = 0.;	1019	if (block < 0.) block = 0.;
799	}	1020	}
800		1021
801	method_poll (block);	1022	method_poll (EV_A_ block);
802		1023
803	/* update ev_now, do magic */	1024	/* update rt_now, do magic */
804	time_update ();	1025	time_update (EV_A);
805		1026
806	/* queue pending timers and reschedule them */	1027	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1028	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	1029	periodics_reify (EV_A); /* absolute timers called first */
809		1030
810	/* queue idle watchers unless io or timers are pending */	1031	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1032	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1033	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1034
814	/* queue check watchers, to be executed first */	1035	/* queue check watchers, to be executed first */
815	if (checkcnt)	1036	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1037	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1038
818	call_pending ();	1039	call_pending (EV_A);
819	}	1040	}
820	while (!ev_loop_done);	1041	while (activecnt && !loop_done);
821		1042
822	if (ev_loop_done != 2)	1043	if (loop_done != 2)
823	ev_loop_done = 0;	1044	loop_done = 0;
		1045	}
		1046
		1047	void
		1048	ev_unloop (EV_P_ int how)
		1049	{
		1050	loop_done = how;
824	}	1051	}
825		1052
826	/*****************************************************************************/	1053	/*****************************************************************************/
827		1054
828	static void	1055	inline void
829	wlist_add (WL *head, WL elem)	1056	wlist_add (WL *head, WL elem)
830	{	1057	{
831	elem->next = *head;	1058	elem->next = *head;
832	*head = elem;	1059	*head = elem;
833	}	1060	}
834		1061
835	static void	1062	inline void
836	wlist_del (WL *head, WL elem)	1063	wlist_del (WL *head, WL elem)
837	{	1064	{
838	while (*head)	1065	while (*head)
839	{	1066	{
840	if (*head == elem)	1067	if (*head == elem)
…		…
845		1072
846	head = &(*head)->next;	1073	head = &(*head)->next;
847	}	1074	}
848	}	1075	}
849		1076
850	static void	1077	inline void
851	ev_clear_pending (W w)	1078	ev_clear_pending (EV_P_ W w)
852	{	1079	{
853	if (w->pending)	1080	if (w->pending)
854	{	1081	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1082	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1083	w->pending = 0;
857	}	1084	}
858	}	1085	}
859		1086
860	static void	1087	inline void
861	ev_start (W w, int active)	1088	ev_start (EV_P_ W w, int active)
862	{	1089	{
		1090	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
		1091	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
		1092
863	w->active = active;	1093	w->active = active;
		1094	ev_ref (EV_A);
864	}	1095	}
865		1096
866	static void	1097	inline void
867	ev_stop (W w)	1098	ev_stop (EV_P_ W w)
868	{	1099	{
		1100	ev_unref (EV_A);
869	w->active = 0;	1101	w->active = 0;
870	}	1102	}
871		1103
872	/*****************************************************************************/	1104	/*****************************************************************************/
873		1105
874	void	1106	void
875	ev_io_start (struct ev_io *w)	1107	ev_io_start (EV_P_ struct ev_io *w)
876	{	1108	{
877	int fd = w->fd;	1109	int fd = w->fd;
878		1110
879	if (ev_is_active (w))	1111	if (ev_is_active (w))
880	return;	1112	return;
881		1113
882	assert (("ev_io_start called with negative fd", fd >= 0));	1114	assert (("ev_io_start called with negative fd", fd >= 0));
883		1115
884	ev_start ((W)w, 1);	1116	ev_start (EV_A_ (W)w, 1);
885	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1117	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
886	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1118	wlist_add ((WL *)&anfds[fd].head, (WL)w);
887		1119
888	fd_change (fd);	1120	fd_change (EV_A_ fd);
889	}	1121	}
890		1122
891	void	1123	void
892	ev_io_stop (struct ev_io *w)	1124	ev_io_stop (EV_P_ struct ev_io *w)
893	{	1125	{
894	ev_clear_pending ((W)w);	1126	ev_clear_pending (EV_A_ (W)w);
895	if (!ev_is_active (w))	1127	if (!ev_is_active (w))
896	return;	1128	return;
897		1129
898	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1130	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
899	ev_stop ((W)w);	1131	ev_stop (EV_A_ (W)w);
900		1132
901	fd_change (w->fd);	1133	fd_change (EV_A_ w->fd);
902	}	1134	}
903		1135
904	void	1136	void
905	ev_timer_start (struct ev_timer *w)	1137	ev_timer_start (EV_P_ struct ev_timer *w)
906	{	1138	{
907	if (ev_is_active (w))	1139	if (ev_is_active (w))
908	return;	1140	return;
909		1141
910	w->at += now;	1142	((WT)w)->at += mn_now;
911		1143
912	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1144	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
913		1145
914	ev_start ((W)w, ++timercnt);	1146	ev_start (EV_A_ (W)w, ++timercnt);
915	array_needsize (timers, timermax, timercnt, );	1147	array_needsize (timers, timermax, timercnt, );
916	timers [timercnt - 1] = w;	1148	timers [timercnt - 1] = w;
917	upheap ((WT *)timers, timercnt - 1);	1149	upheap ((WT *)timers, timercnt - 1);
918	}
919		1150
		1151	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1152	}
		1153
920	void	1154	void
921	ev_timer_stop (struct ev_timer *w)	1155	ev_timer_stop (EV_P_ struct ev_timer *w)
922	{	1156	{
923	ev_clear_pending ((W)w);	1157	ev_clear_pending (EV_A_ (W)w);
924	if (!ev_is_active (w))	1158	if (!ev_is_active (w))
925	return;	1159	return;
926		1160
		1161	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1162
927	if (w->active < timercnt--)	1163	if (((W)w)->active < timercnt--)
928	{	1164	{
929	timers [w->active - 1] = timers [timercnt];	1165	timers [((W)w)->active - 1] = timers [timercnt];
930	downheap ((WT *)timers, timercnt, w->active - 1);	1166	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
931	}	1167	}
932		1168
933	w->at = w->repeat;	1169	((WT)w)->at = w->repeat;
934		1170
935	ev_stop ((W)w);	1171	ev_stop (EV_A_ (W)w);
936	}	1172	}
937		1173
938	void	1174	void
939	ev_timer_again (struct ev_timer *w)	1175	ev_timer_again (EV_P_ struct ev_timer *w)
940	{	1176	{
941	if (ev_is_active (w))	1177	if (ev_is_active (w))
942	{	1178	{
943	if (w->repeat)	1179	if (w->repeat)
944	{	1180	{
945	w->at = now + w->repeat;	1181	((WT)w)->at = mn_now + w->repeat;
946	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
947	}	1183	}
948	else	1184	else
949	ev_timer_stop (w);	1185	ev_timer_stop (EV_A_ w);
950	}	1186	}
951	else if (w->repeat)	1187	else if (w->repeat)
952	ev_timer_start (w);	1188	ev_timer_start (EV_A_ w);
953	}	1189	}
954		1190
955	void	1191	void
956	ev_periodic_start (struct ev_periodic *w)	1192	ev_periodic_start (EV_P_ struct ev_periodic *w)
957	{	1193	{
958	if (ev_is_active (w))	1194	if (ev_is_active (w))
959	return;	1195	return;
960		1196
961	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1197	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
962		1198
963	/* this formula differs from the one in periodic_reify because we do not always round up */	1199	/* this formula differs from the one in periodic_reify because we do not always round up */
964	if (w->interval)	1200	if (w->interval)
965	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1201	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
966		1202
967	ev_start ((W)w, ++periodiccnt);	1203	ev_start (EV_A_ (W)w, ++periodiccnt);
968	array_needsize (periodics, periodicmax, periodiccnt, );	1204	array_needsize (periodics, periodicmax, periodiccnt, );
969	periodics [periodiccnt - 1] = w;	1205	periodics [periodiccnt - 1] = w;
970	upheap ((WT *)periodics, periodiccnt - 1);	1206	upheap ((WT *)periodics, periodiccnt - 1);
971	}
972		1207
		1208	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1209	}
		1210
973	void	1211	void
974	ev_periodic_stop (struct ev_periodic *w)	1212	ev_periodic_stop (EV_P_ struct ev_periodic *w)
975	{	1213	{
976	ev_clear_pending ((W)w);	1214	ev_clear_pending (EV_A_ (W)w);
977	if (!ev_is_active (w))	1215	if (!ev_is_active (w))
978	return;	1216	return;
979		1217
		1218	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1219
980	if (w->active < periodiccnt--)	1220	if (((W)w)->active < periodiccnt--)
981	{	1221	{
982	periodics [w->active - 1] = periodics [periodiccnt];	1222	periodics [((W)w)->active - 1] = periodics [periodiccnt];
983	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1223	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
984	}	1224	}
985		1225
986	ev_stop ((W)w);	1226	ev_stop (EV_A_ (W)w);
987	}	1227	}
988		1228
989	void	1229	void
990	ev_signal_start (struct ev_signal *w)	1230	ev_idle_start (EV_P_ struct ev_idle *w)
991	{	1231	{
992	if (ev_is_active (w))	1232	if (ev_is_active (w))
993	return;	1233	return;
994		1234
		1235	ev_start (EV_A_ (W)w, ++idlecnt);
		1236	array_needsize (idles, idlemax, idlecnt, );
		1237	idles [idlecnt - 1] = w;
		1238	}
		1239
		1240	void
		1241	ev_idle_stop (EV_P_ struct ev_idle *w)
		1242	{
		1243	ev_clear_pending (EV_A_ (W)w);
		1244	if (ev_is_active (w))
		1245	return;
		1246
		1247	idles [((W)w)->active - 1] = idles [--idlecnt];
		1248	ev_stop (EV_A_ (W)w);
		1249	}
		1250
		1251	void
		1252	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1253	{
		1254	if (ev_is_active (w))
		1255	return;
		1256
		1257	ev_start (EV_A_ (W)w, ++preparecnt);
		1258	array_needsize (prepares, preparemax, preparecnt, );
		1259	prepares [preparecnt - 1] = w;
		1260	}
		1261
		1262	void
		1263	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1264	{
		1265	ev_clear_pending (EV_A_ (W)w);
		1266	if (ev_is_active (w))
		1267	return;
		1268
		1269	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1270	ev_stop (EV_A_ (W)w);
		1271	}
		1272
		1273	void
		1274	ev_check_start (EV_P_ struct ev_check *w)
		1275	{
		1276	if (ev_is_active (w))
		1277	return;
		1278
		1279	ev_start (EV_A_ (W)w, ++checkcnt);
		1280	array_needsize (checks, checkmax, checkcnt, );
		1281	checks [checkcnt - 1] = w;
		1282	}
		1283
		1284	void
		1285	ev_check_stop (EV_P_ struct ev_check *w)
		1286	{
		1287	ev_clear_pending (EV_A_ (W)w);
		1288	if (ev_is_active (w))
		1289	return;
		1290
		1291	checks [((W)w)->active - 1] = checks [--checkcnt];
		1292	ev_stop (EV_A_ (W)w);
		1293	}
		1294
		1295	#ifndef SA_RESTART
		1296	# define SA_RESTART 0
		1297	#endif
		1298
		1299	void
		1300	ev_signal_start (EV_P_ struct ev_signal *w)
		1301	{
		1302	#if EV_MULTIPLICITY
		1303	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1304	#endif
		1305	if (ev_is_active (w))
		1306	return;
		1307
995	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1308	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
996		1309
997	ev_start ((W)w, 1);	1310	ev_start (EV_A_ (W)w, 1);
998	array_needsize (signals, signalmax, w->signum, signals_init);	1311	array_needsize (signals, signalmax, w->signum, signals_init);
999	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1312	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1000		1313
1001	if (!w->next)	1314	if (!((WL)w)->next)
1002	{	1315	{
1003	struct sigaction sa;	1316	struct sigaction sa;
1004	sa.sa_handler = sighandler;	1317	sa.sa_handler = sighandler;
1005	sigfillset (&sa.sa_mask);	1318	sigfillset (&sa.sa_mask);
1006	sa.sa_flags = 0;	1319	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1007	sigaction (w->signum, &sa, 0);	1320	sigaction (w->signum, &sa, 0);
1008	}	1321	}
1009	}	1322	}
1010		1323
1011	void	1324	void
1012	ev_signal_stop (struct ev_signal *w)	1325	ev_signal_stop (EV_P_ struct ev_signal *w)
1013	{	1326	{
1014	ev_clear_pending ((W)w);	1327	ev_clear_pending (EV_A_ (W)w);
1015	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
1016	return;	1329	return;
1017		1330
1018	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1331	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1019	ev_stop ((W)w);	1332	ev_stop (EV_A_ (W)w);
1020		1333
1021	if (!signals [w->signum - 1].head)	1334	if (!signals [w->signum - 1].head)
1022	signal (w->signum, SIG_DFL);	1335	signal (w->signum, SIG_DFL);
1023	}	1336	}
1024		1337
1025	void	1338	void
1026	ev_idle_start (struct ev_idle *w)	1339	ev_child_start (EV_P_ struct ev_child *w)
1027	{	1340	{
		1341	#if EV_MULTIPLICITY
		1342	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1343	#endif
1028	if (ev_is_active (w))	1344	if (ev_is_active (w))
1029	return;	1345	return;
1030		1346
1031	ev_start ((W)w, ++idlecnt);	1347	ev_start (EV_A_ (W)w, 1);
1032	array_needsize (idles, idlemax, idlecnt, );	1348	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1033	idles [idlecnt - 1] = w;
1034	}	1349	}
1035		1350
1036	void	1351	void
1037	ev_idle_stop (struct ev_idle *w)	1352	ev_child_stop (EV_P_ struct ev_child *w)
1038	{	1353	{
1039	ev_clear_pending ((W)w);	1354	ev_clear_pending (EV_A_ (W)w);
1040	if (ev_is_active (w))	1355	if (ev_is_active (w))
1041	return;	1356	return;
1042		1357
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);	1358	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1109	ev_stop ((W)w);	1359	ev_stop (EV_A_ (W)w);
1110	}	1360	}
1111		1361
1112	/*****************************************************************************/	1362	/*****************************************************************************/
1113		1363
1114	struct ev_once	1364	struct ev_once
…		…
1118	void (*cb)(int revents, void *arg);	1368	void (*cb)(int revents, void *arg);
1119	void *arg;	1369	void *arg;
1120	};	1370	};
1121		1371
1122	static void	1372	static void
1123	once_cb (struct ev_once *once, int revents)	1373	once_cb (EV_P_ struct ev_once *once, int revents)
1124	{	1374	{
1125	void (*cb)(int revents, void *arg) = once->cb;	1375	void (*cb)(int revents, void *arg) = once->cb;
1126	void *arg = once->arg;	1376	void *arg = once->arg;
1127		1377
1128	ev_io_stop (&once->io);	1378	ev_io_stop (EV_A_ &once->io);
1129	ev_timer_stop (&once->to);	1379	ev_timer_stop (EV_A_ &once->to);
1130	free (once);	1380	free (once);
1131		1381
1132	cb (revents, arg);	1382	cb (revents, arg);
1133	}	1383	}
1134		1384
1135	static void	1385	static void
1136	once_cb_io (struct ev_io *w, int revents)	1386	once_cb_io (EV_P_ struct ev_io *w, int revents)
1137	{	1387	{
1138	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1388	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1139	}	1389	}
1140		1390
1141	static void	1391	static void
1142	once_cb_to (struct ev_timer *w, int revents)	1392	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1143	{	1393	{
1144	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1394	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1145	}	1395	}
1146		1396
1147	void	1397	void
1148	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1398	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1149	{	1399	{
1150	struct ev_once *once = malloc (sizeof (struct ev_once));	1400	struct ev_once *once = malloc (sizeof (struct ev_once));
1151		1401
1152	if (!once)	1402	if (!once)
1153	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1403	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1158		1408
1159	ev_watcher_init (&once->io, once_cb_io);	1409	ev_watcher_init (&once->io, once_cb_io);
1160	if (fd >= 0)	1410	if (fd >= 0)
1161	{	1411	{
1162	ev_io_set (&once->io, fd, events);	1412	ev_io_set (&once->io, fd, events);
1163	ev_io_start (&once->io);	1413	ev_io_start (EV_A_ &once->io);
1164	}	1414	}
1165		1415
1166	ev_watcher_init (&once->to, once_cb_to);	1416	ev_watcher_init (&once->to, once_cb_to);
1167	if (timeout >= 0.)	1417	if (timeout >= 0.)
1168	{	1418	{
1169	ev_timer_set (&once->to, timeout, 0.);	1419	ev_timer_set (&once->to, timeout, 0.);
1170	ev_timer_start (&once->to);	1420	ev_timer_start (EV_A_ &once->to);
1171	}	1421	}
1172	}	1422	}
1173	}	1423	}
1174		1424
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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