ViewVC Help

View File | Revision Log | Show Annotations | Download File

/cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.62 by root, Sun Nov 4 20:38:07 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
…		…
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
67	#endif	91	#endif
68		92
69	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
70	# define EV_USE_KQUEUE 0	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
71	#endif	103	#endif
72		104
73	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
74	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
75	#endif	107	#endif
…		…
111		143
112	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
115		147
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
117	ev_tstamp ev_now;
118	int ev_method;
119
120	static int have_monotonic; /* runtime */
121
122	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
123	static void (*method_modify)(int fd, int oev, int nev);
124	static void (*method_poll)(ev_tstamp timeout);
125		149
126	/*****************************************************************************/	150	/*****************************************************************************/
127		151
128	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
129	ev_time (void)	186	ev_time (void)
130	{	187	{
131	#if EV_USE_REALTIME	188	#if EV_USE_REALTIME
132	struct timespec ts;	189	struct timespec ts;
133	clock_gettime (CLOCK_REALTIME, &ts);	190	clock_gettime (CLOCK_REALTIME, &ts);
…		…
137	gettimeofday (&tv, 0);	194	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	195	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	196	#endif
140	}	197	}
141		198
142	static ev_tstamp	199	inline ev_tstamp
143	get_clock (void)	200	get_clock (void)
144	{	201	{
145	#if EV_USE_MONOTONIC	202	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	203	if (expect_true (have_monotonic))
147	{	204	{
…		…
150	return ts.tv_sec + ts.tv_nsec * 1e-9;	207	return ts.tv_sec + ts.tv_nsec * 1e-9;
151	}	208	}
152	#endif	209	#endif
153		210
154	return ev_time ();	211	return ev_time ();
		212	}
		213
		214	ev_tstamp
		215	ev_now (EV_P)
		216	{
		217	return rt_now;
155	}	218	}
156		219
157	#define array_roundsize(base,n) ((n) | 4 & ~3)	220	#define array_roundsize(base,n) ((n) | 4 & ~3)
158		221
159	#define array_needsize(base,cur,cnt,init) \	222	#define array_needsize(base,cur,cnt,init) \
…		…
171	cur = newcnt; \	234	cur = newcnt; \
172	}	235	}
173		236
174	/*****************************************************************************/	237	/*****************************************************************************/
175		238
176	typedef struct
177	{
178	struct ev_io *head;
179	unsigned char events;
180	unsigned char reify;
181	} ANFD;
182
183	static ANFD *anfds;
184	static int anfdmax;
185
186	static void	239	static void
187	anfds_init (ANFD *base, int count)	240	anfds_init (ANFD *base, int count)
188	{	241	{
189	while (count--)	242	while (count--)
190	{	243	{
…		…
194		247
195	++base;	248	++base;
196	}	249	}
197	}	250	}
198		251
199	typedef struct
200	{
201	W w;
202	int events;
203	} ANPENDING;
204
205	static ANPENDING *pendings [NUMPRI];
206	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
207
208	static void	252	static void
209	event (W w, int events)	253	event (EV_P_ W w, int events)
210	{	254	{
211	if (w->pending)	255	if (w->pending)
212	{	256	{
213	pendings [ABSPRI (w)][w->pending - 1].events |= events;	257	pendings [ABSPRI (w)][w->pending - 1].events |= events;
214	return;	258	return;
…		…
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	263	pendings [ABSPRI (w)][w->pending - 1].w = w;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	264	pendings [ABSPRI (w)][w->pending - 1].events = events;
221	}	265	}
222		266
223	static void	267	static void
224	queue_events (W *events, int eventcnt, int type)	268	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	269	{
226	int i;	270	int i;
227		271
228	for (i = 0; i < eventcnt; ++i)	272	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	273	event (EV_A_ events [i], type);
230	}	274	}
231		275
232	static void	276	static void
233	fd_event (int fd, int events)	277	fd_event (EV_P_ int fd, int events)
234	{	278	{
235	ANFD *anfd = anfds + fd;	279	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	280	struct ev_io *w;
237		281
238	for (w = anfd->head; w; w = w->next)	282	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
239	{	283	{
240	int ev = w->events & events;	284	int ev = w->events & events;
241		285
242	if (ev)	286	if (ev)
243	event ((W)w, ev);	287	event (EV_A_ (W)w, ev);
244	}	288	}
245	}	289	}
246		290
247	/*****************************************************************************/	291	/*****************************************************************************/
248		292
249	static int *fdchanges;
250	static int fdchangemax, fdchangecnt;
251
252	static void	293	static void
253	fd_reify (void)	294	fd_reify (EV_P)
254	{	295	{
255	int i;	296	int i;
256		297
257	for (i = 0; i < fdchangecnt; ++i)	298	for (i = 0; i < fdchangecnt; ++i)
258	{	299	{
…		…
260	ANFD *anfd = anfds + fd;	301	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	302	struct ev_io *w;
262		303
263	int events = 0;	304	int events = 0;
264		305
265	for (w = anfd->head; w; w = w->next)	306	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
266	events |= w->events;	307	events |= w->events;
267		308
268	anfd->reify = 0;	309	anfd->reify = 0;
269		310
270	if (anfd->events != events)	311	if (anfd->events != events)
271	{	312	{
272	method_modify (fd, anfd->events, events);	313	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	314	anfd->events = events;
274	}	315	}
275	}	316	}
276		317
277	fdchangecnt = 0;	318	fdchangecnt = 0;
278	}	319	}
279		320
280	static void	321	static void
281	fd_change (int fd)	322	fd_change (EV_P_ int fd)
282	{	323	{
283	if (anfds [fd].reify || fdchangecnt < 0)	324	if (anfds [fd].reify || fdchangecnt < 0)
284	return;	325	return;
285		326
286	anfds [fd].reify = 1;	327	anfds [fd].reify = 1;
…		…
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	330	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
290	fdchanges [fdchangecnt - 1] = fd;	331	fdchanges [fdchangecnt - 1] = fd;
291	}	332	}
292		333
293	static void	334	static void
294	fd_kill (int fd)	335	fd_kill (EV_P_ int fd)
295	{	336	{
296	struct ev_io *w;	337	struct ev_io *w;
297		338
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	339	while ((w = (struct ev_io *)anfds [fd].head))
300	{	340	{
301	ev_io_stop (w);	341	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	342	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
303	}	343	}
304	}	344	}
305		345
306	/* called on EBADF to verify fds */	346	/* called on EBADF to verify fds */
307	static void	347	static void
308	fd_ebadf (void)	348	fd_ebadf (EV_P)
309	{	349	{
310	int fd;	350	int fd;
311		351
312	for (fd = 0; fd < anfdmax; ++fd)	352	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	353	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	354	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
315	fd_kill (fd);	355	fd_kill (EV_A_ fd);
316	}	356	}
317		357
318	/* 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 */
319	static void	359	static void
320	fd_enomem (void)	360	fd_enomem (EV_P)
321	{	361	{
322	int fd = anfdmax;	362	int fd;
323		363
324	while (fd--)	364	for (fd = anfdmax; fd--; )
325	if (anfds [fd].events)	365	if (anfds [fd].events)
326	{	366	{
327	close (fd);	367	close (fd);
328	fd_kill (fd);	368	fd_kill (EV_A_ fd);
329	return;	369	return;
330	}	370	}
331	}	371	}
332		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
333	/*****************************************************************************/	388	/*****************************************************************************/
334		389
335	static struct ev_timer **timers;
336	static int timermax, timercnt;
337
338	static struct ev_periodic **periodics;
339	static int periodicmax, periodiccnt;
340
341	static void	390	static void
342	upheap (WT *timers, int k)	391	upheap (WT *heap, int k)
343	{	392	{
344	WT w = timers [k];	393	WT w = heap [k];
345		394
346	while (k && timers [k >> 1]->at > w->at)	395	while (k && heap [k >> 1]->at > w->at)
347	{	396	{
348	timers [k] = timers [k >> 1];	397	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	398	((W)heap [k])->active = k + 1;
350	k >>= 1;	399	k >>= 1;
351	}	400	}
352		401
353	timers [k] = w;	402	heap [k] = w;
354	timers [k]->active = k + 1;	403	((W)heap [k])->active = k + 1;
355		404
356	}	405	}
357		406
358	static void	407	static void
359	downheap (WT *timers, int N, int k)	408	downheap (WT *heap, int N, int k)
360	{	409	{
361	WT w = timers [k];	410	WT w = heap [k];
362		411
363	while (k < (N >> 1))	412	while (k < (N >> 1))
364	{	413	{
365	int j = k << 1;	414	int j = k << 1;
366		415
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	416	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	417	++j;
369		418
370	if (w->at <= timers [j]->at)	419	if (w->at <= heap [j]->at)
371	break;	420	break;
372		421
373	timers [k] = timers [j];	422	heap [k] = heap [j];
374	timers [k]->active = k + 1;	423	((W)heap [k])->active = k + 1;
375	k = j;	424	k = j;
376	}	425	}
377		426
378	timers [k] = w;	427	heap [k] = w;
379	timers [k]->active = k + 1;	428	((W)heap [k])->active = k + 1;
380	}	429	}
381		430
382	/*****************************************************************************/	431	/*****************************************************************************/
383		432
384	typedef struct	433	typedef struct
385	{	434	{
386	struct ev_signal *head;	435	struct ev_watcher_list *head;
387	sig_atomic_t volatile gotsig;	436	sig_atomic_t volatile gotsig;
388	} ANSIG;	437	} ANSIG;
389		438
390	static ANSIG *signals;	439	static ANSIG *signals;
391	static int signalmax;	440	static int signalmax;
…		…
411	{	460	{
412	signals [signum - 1].gotsig = 1;	461	signals [signum - 1].gotsig = 1;
413		462
414	if (!gotsig)	463	if (!gotsig)
415	{	464	{
		465	int old_errno = errno;
416	gotsig = 1;	466	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	467	write (sigpipe [1], &signum, 1);
		468	errno = old_errno;
418	}	469	}
419	}	470	}
420		471
421	static void	472	static void
422	sigcb (struct ev_io *iow, int revents)	473	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	474	{
424	struct ev_signal *w;	475	struct ev_watcher_list *w;
425	int signum;	476	int signum;
426		477
427	read (sigpipe [0], &revents, 1);	478	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	479	gotsig = 0;
429		480
…		…
431	if (signals [signum].gotsig)	482	if (signals [signum].gotsig)
432	{	483	{
433	signals [signum].gotsig = 0;	484	signals [signum].gotsig = 0;
434		485
435	for (w = signals [signum].head; w; w = w->next)	486	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);	487	event (EV_A_ (W)w, EV_SIGNAL);
437	}	488	}
438	}	489	}
439		490
440	static void	491	static void
441	siginit (void)	492	siginit (EV_P)
442	{	493	{
		494	#ifndef WIN32
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	495	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	496	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445		497
446	/* rather than sort out wether we really need nb, set it */	498	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	499	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	500	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		501	#endif
449		502
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	503	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	504	ev_io_start (EV_A_ &sigev);
		505	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	506	}
453		507
454	/*****************************************************************************/	508	/*****************************************************************************/
455		509
456	static struct ev_idle **idles;	510	#ifndef WIN32
457	static int idlemax, idlecnt;
458
459	static struct ev_prepare **prepares;
460	static int preparemax, preparecnt;
461
462	static struct ev_check **checks;
463	static int checkmax, checkcnt;
464
465	/*****************************************************************************/
466		511
467	static struct ev_child *childs [PID_HASHSIZE];	512	static struct ev_child *childs [PID_HASHSIZE];
468	static struct ev_signal childev;	513	static struct ev_signal childev;
469		514
470	#ifndef WCONTINUED	515	#ifndef WCONTINUED
471	# define WCONTINUED 0	516	# define WCONTINUED 0
472	#endif	517	#endif
473		518
474	static void	519	static void
475	childcb (struct ev_signal *sw, int revents)	520	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	521	{
477	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	w->priority = sw->priority; /* 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	{
478	int pid, status;	537	int pid, status;
479		538
480	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	539	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	540	{
482	if (w->pid == pid || !w->pid)	541	/* make sure we are called again until all childs have been reaped */
483	{	542	event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	543
485	event ((W)w, EV_CHILD);	544	child_reap (EV_A_ sw, pid, pid, status);
486	}	545	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		546	}
487	}	547	}
		548
		549	#endif
488		550
489	/*****************************************************************************/	551	/*****************************************************************************/
490		552
491	#if EV_USE_KQUEUE	553	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	554	# include "ev_kqueue.c"
…		…
511	ev_version_minor (void)	573	ev_version_minor (void)
512	{	574	{
513	return EV_VERSION_MINOR;	575	return EV_VERSION_MINOR;
514	}	576	}
515		577
516	/* 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 */
517	static int	579	static int
518	enable_secure ()	580	enable_secure (void)
519	{	581	{
		582	#ifdef WIN32
		583	return 0;
		584	#else
520	return getuid () != geteuid ()	585	return getuid () != geteuid ()
521	|| getgid () != getegid ();	586	|| getgid () != getegid ();
		587	#endif
522	}	588	}
523		589
524	int ev_init (int methods)	590	int
		591	ev_method (EV_P)
525	{	592	{
		593	return method;
		594	}
		595
		596	static void
		597	loop_init (EV_P_ int methods)
		598	{
526	if (!ev_method)	599	if (!method)
527	{	600	{
528	#if EV_USE_MONOTONIC	601	#if EV_USE_MONOTONIC
529	{	602	{
530	struct timespec ts;	603	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	604	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	605	have_monotonic = 1;
533	}	606	}
534	#endif	607	#endif
535		608
536	ev_now = ev_time ();	609	rt_now = ev_time ();
537	now = get_clock ();	610	mn_now = get_clock ();
538	now_floor = now;	611	now_floor = mn_now;
539	diff = ev_now - now;	612	rtmn_diff = rt_now - mn_now;
540
541	if (pipe (sigpipe))
542	return 0;
543		613
544	if (methods == EVMETHOD_AUTO)	614	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))	615	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	616	methods = atoi (getenv ("LIBEV_METHODS"));
547	else	617	else
548	methods = EVMETHOD_ANY;	618	methods = EVMETHOD_ANY;
549		619
550	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
551	#if EV_USE_KQUEUE	624	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	625	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
553	#endif	626	#endif
554	#if EV_USE_EPOLL	627	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	628	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
556	#endif	629	#endif
557	#if EV_USE_POLL	630	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	631	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
559	#endif	632	#endif
560	#if EV_USE_SELECT	633	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	634	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
562	#endif	635	#endif
		636	}
		637	}
563		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
564	if (ev_method)	729	if (ev_method (EV_A))
565	{	730	{
566	ev_watcher_init (&sigev, sigcb);	731	ev_watcher_init (&sigev, sigcb);
		732	ev_set_priority (&sigev, EV_MAXPRI);
567	siginit ();	733	siginit (EV_A);
568		734
		735	#ifndef WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	736	ev_signal_init (&childev, childcb, SIGCHLD);
		737	ev_set_priority (&childev, EV_MAXPRI);
570	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
571	}	741	}
		742	else
		743	default_loop = 0;
572	}	744	}
573		745
574	return ev_method;	746	return default_loop;
575	}	747	}
576		748
577	/*****************************************************************************/
578
579	void	749	void
580	ev_fork_prepare (void)	750	ev_default_destroy (void)
581	{	751	{
582	/* nop */	752	#if EV_MULTIPLICITY
583	}	753	struct ev_loop *loop = default_loop;
584
585	void
586	ev_fork_parent (void)
587	{
588	/* nop */
589	}
590
591	void
592	ev_fork_child (void)
593	{
594	#if EV_USE_EPOLL
595	if (ev_method == EVMETHOD_EPOLL)
596	epoll_postfork_child ();
597	#endif	754	#endif
598		755
		756	ev_ref (EV_A); /* child watcher */
		757	ev_signal_stop (EV_A_ &childev);
		758
		759	ev_ref (EV_A); /* signal watcher */
599	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);
600	close (sigpipe [0]);	778	close (sigpipe [0]);
601	close (sigpipe [1]);	779	close (sigpipe [1]);
602	pipe (sigpipe);	780	pipe (sigpipe);
		781
		782	ev_ref (EV_A); /* signal watcher */
603	siginit ();	783	siginit (EV_A);
604	}	784	}
605		785
606	/*****************************************************************************/	786	/*****************************************************************************/
607		787
608	static void	788	static void
609	call_pending (void)	789	call_pending (EV_P)
610	{	790	{
611	int pri;	791	int pri;
612		792
613	for (pri = NUMPRI; pri--; )	793	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	794	while (pendingcnt [pri])
…		…
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	796	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		797
618	if (p->w)	798	if (p->w)
619	{	799	{
620	p->w->pending = 0;	800	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	801	p->w->cb (EV_A_ p->w, p->events);
622	}	802	}
623	}	803	}
624	}	804	}
625		805
626	static void	806	static void
627	timers_reify (void)	807	timers_reify (EV_P)
628	{	808	{
629	while (timercnt && timers [0]->at <= now)	809	while (timercnt && timers [0]->at <= mn_now)
630	{	810	{
631	struct ev_timer *w = timers [0];	811	struct ev_timer *w = timers [0];
		812
		813	assert (("inactive timer on timer heap detected", ev_is_active (w)));
632		814
633	/* first reschedule or stop timer */	815	/* first reschedule or stop timer */
634	if (w->repeat)	816	if (w->repeat)
635	{	817	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	818	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
637	w->at = now + w->repeat;	819	w->at = mn_now + w->repeat;
638	downheap ((WT *)timers, timercnt, 0);	820	downheap ((WT *)timers, timercnt, 0);
639	}	821	}
640	else	822	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	823	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		824
643	event ((W)w, EV_TIMEOUT);	825	event (EV_A_ (W)w, EV_TIMEOUT);
644	}	826	}
645	}	827	}
646		828
647	static void	829	static void
648	periodics_reify (void)	830	periodics_reify (EV_P)
649	{	831	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	832	while (periodiccnt && periodics [0]->at <= rt_now)
651	{	833	{
652	struct ev_periodic *w = periodics [0];	834	struct ev_periodic *w = periodics [0];
		835
		836	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
653		837
654	/* first reschedule or stop timer */	838	/* first reschedule or stop timer */
655	if (w->interval)	839	if (w->interval)
656	{	840	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	841	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
658	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	842	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
659	downheap ((WT *)periodics, periodiccnt, 0);	843	downheap ((WT *)periodics, periodiccnt, 0);
660	}	844	}
661	else	845	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	846	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		847
664	event ((W)w, EV_PERIODIC);	848	event (EV_A_ (W)w, EV_PERIODIC);
665	}	849	}
666	}	850	}
667		851
668	static void	852	static void
669	periodics_reschedule (ev_tstamp diff)	853	periodics_reschedule (EV_P)
670	{	854	{
671	int i;	855	int i;
672		856
673	/* adjust periodics after time jump */	857	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	858	for (i = 0; i < periodiccnt; ++i)
675	{	859	{
676	struct ev_periodic *w = periodics [i];	860	struct ev_periodic *w = periodics [i];
677		861
678	if (w->interval)	862	if (w->interval)
679	{	863	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	864	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
681		865
682	if (fabs (diff) >= 1e-4)	866	if (fabs (diff) >= 1e-4)
683	{	867	{
684	ev_periodic_stop (w);	868	ev_periodic_stop (EV_A_ w);
685	ev_periodic_start (w);	869	ev_periodic_start (EV_A_ w);
686		870
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */	871	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}	872	}
689	}	873	}
690	}	874	}
691	}	875	}
692		876
693	static int	877	inline int
694	time_update_monotonic (void)	878	time_update_monotonic (EV_P)
695	{	879	{
696	now = get_clock ();	880	mn_now = get_clock ();
697		881
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	882	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	883	{
700	ev_now = now + diff;	884	rt_now = rtmn_diff + mn_now;
701	return 0;	885	return 0;
702	}	886	}
703	else	887	else
704	{	888	{
705	now_floor = now;	889	now_floor = mn_now;
706	ev_now = ev_time ();	890	rt_now = ev_time ();
707	return 1;	891	return 1;
708	}	892	}
709	}	893	}
710		894
711	static void	895	static void
712	time_update (void)	896	time_update (EV_P)
713	{	897	{
714	int i;	898	int i;
715		899
716	#if EV_USE_MONOTONIC	900	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	901	if (expect_true (have_monotonic))
718	{	902	{
719	if (time_update_monotonic ())	903	if (time_update_monotonic (EV_A))
720	{	904	{
721	ev_tstamp odiff = diff;	905	ev_tstamp odiff = rtmn_diff;
722		906
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	907	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	908	{
725	diff = ev_now - now;	909	rtmn_diff = rt_now - mn_now;
726		910
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	911	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	912	return; /* all is well */
729		913
730	ev_now = ev_time ();	914	rt_now = ev_time ();
731	now = get_clock ();	915	mn_now = get_clock ();
732	now_floor = now;	916	now_floor = mn_now;
733	}	917	}
734		918
735	periodics_reschedule (diff - odiff);	919	periodics_reschedule (EV_A);
736	/* no timer adjustment, as the monotonic clock doesn't jump */	920	/* no timer adjustment, as the monotonic clock doesn't jump */
		921	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	922	}
738	}	923	}
739	else	924	else
740	#endif	925	#endif
741	{	926	{
742	ev_now = ev_time ();	927	rt_now = ev_time ();
743		928
744	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	929	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	930	{
746	periodics_reschedule (ev_now - now);	931	periodics_reschedule (EV_A);
747		932
748	/* adjust timers. this is easy, as the offset is the same for all */	933	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	934	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	935	timers [i]->at += rt_now - mn_now;
751	}	936	}
752		937
753	now = ev_now;	938	mn_now = rt_now;
754	}	939	}
755	}	940	}
756		941
757	int ev_loop_done;	942	void
		943	ev_ref (EV_P)
		944	{
		945	++activecnt;
		946	}
758		947
		948	void
		949	ev_unref (EV_P)
		950	{
		951	--activecnt;
		952	}
		953
		954	static int loop_done;
		955
		956	void
759	void ev_loop (int flags)	957	ev_loop (EV_P_ int flags)
760	{	958	{
761	double block;	959	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	960	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
763		961
764	do	962	do
765	{	963	{
766	/* queue check watchers (and execute them) */	964	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	965	if (expect_false (preparecnt))
768	{	966	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	967	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	968	call_pending (EV_A);
771	}	969	}
772		970
773	/* update fd-related kernel structures */	971	/* update fd-related kernel structures */
774	fd_reify ();	972	fd_reify (EV_A);
775		973
776	/* calculate blocking time */	974	/* calculate blocking time */
777		975
778	/* we only need this for !monotonic clockor timers, but as we basically	976	/* we only need this for !monotonic clockor timers, but as we basically
779	always have timers, we just calculate it always */	977	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	978	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	979	if (expect_true (have_monotonic))
782	time_update_monotonic ();	980	time_update_monotonic (EV_A);
783	else	981	else
784	#endif	982	#endif
785	{	983	{
786	ev_now = ev_time ();	984	rt_now = ev_time ();
787	now = ev_now;	985	mn_now = rt_now;
788	}	986	}
789		987
790	if (flags & EVLOOP_NONBLOCK || idlecnt)	988	if (flags & EVLOOP_NONBLOCK || idlecnt)
791	block = 0.;	989	block = 0.;
792	else	990	else
793	{	991	{
794	block = MAX_BLOCKTIME;	992	block = MAX_BLOCKTIME;
795		993
796	if (timercnt)	994	if (timercnt)
797	{	995	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	996	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
799	if (block > to) block = to;	997	if (block > to) block = to;
800	}	998	}
801		999
802	if (periodiccnt)	1000	if (periodiccnt)
803	{	1001	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1002	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
805	if (block > to) block = to;	1003	if (block > to) block = to;
806	}	1004	}
807		1005
808	if (block < 0.) block = 0.;	1006	if (block < 0.) block = 0.;
809	}	1007	}
810		1008
811	method_poll (block);	1009	method_poll (EV_A_ block);
812		1010
813	/* update ev_now, do magic */	1011	/* update rt_now, do magic */
814	time_update ();	1012	time_update (EV_A);
815		1013
816	/* queue pending timers and reschedule them */	1014	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1015	timers_reify (EV_A); /* relative timers called last */
818	periodics_reify (); /* absolute timers called first */	1016	periodics_reify (EV_A); /* absolute timers called first */
819		1017
820	/* queue idle watchers unless io or timers are pending */	1018	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1019	if (!pendingcnt)
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1020	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1021
824	/* queue check watchers, to be executed first */	1022	/* queue check watchers, to be executed first */
825	if (checkcnt)	1023	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1024	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1025
828	call_pending ();	1026	call_pending (EV_A);
829	}	1027	}
830	while (!ev_loop_done);	1028	while (activecnt && !loop_done);
831		1029
832	if (ev_loop_done != 2)	1030	if (loop_done != 2)
833	ev_loop_done = 0;	1031	loop_done = 0;
		1032	}
		1033
		1034	void
		1035	ev_unloop (EV_P_ int how)
		1036	{
		1037	loop_done = how;
834	}	1038	}
835		1039
836	/*****************************************************************************/	1040	/*****************************************************************************/
837		1041
838	static void	1042	inline void
839	wlist_add (WL *head, WL elem)	1043	wlist_add (WL *head, WL elem)
840	{	1044	{
841	elem->next = *head;	1045	elem->next = *head;
842	*head = elem;	1046	*head = elem;
843	}	1047	}
844		1048
845	static void	1049	inline void
846	wlist_del (WL *head, WL elem)	1050	wlist_del (WL *head, WL elem)
847	{	1051	{
848	while (*head)	1052	while (*head)
849	{	1053	{
850	if (*head == elem)	1054	if (*head == elem)
…		…
855		1059
856	head = &(*head)->next;	1060	head = &(*head)->next;
857	}	1061	}
858	}	1062	}
859		1063
860	static void	1064	inline void
861	ev_clear_pending (W w)	1065	ev_clear_pending (EV_P_ W w)
862	{	1066	{
863	if (w->pending)	1067	if (w->pending)
864	{	1068	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1069	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1070	w->pending = 0;
867	}	1071	}
868	}	1072	}
869		1073
870	static void	1074	inline void
871	ev_start (W w, int active)	1075	ev_start (EV_P_ W w, int active)
872	{	1076	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1077	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1078	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1079
876	w->active = active;	1080	w->active = active;
		1081	ev_ref (EV_A);
877	}	1082	}
878		1083
879	static void	1084	inline void
880	ev_stop (W w)	1085	ev_stop (EV_P_ W w)
881	{	1086	{
		1087	ev_unref (EV_A);
882	w->active = 0;	1088	w->active = 0;
883	}	1089	}
884		1090
885	/*****************************************************************************/	1091	/*****************************************************************************/
886		1092
887	void	1093	void
888	ev_io_start (struct ev_io *w)	1094	ev_io_start (EV_P_ struct ev_io *w)
889	{	1095	{
890	int fd = w->fd;	1096	int fd = w->fd;
891		1097
892	if (ev_is_active (w))	1098	if (ev_is_active (w))
893	return;	1099	return;
894		1100
895	assert (("ev_io_start called with negative fd", fd >= 0));	1101	assert (("ev_io_start called with negative fd", fd >= 0));
896		1102
897	ev_start ((W)w, 1);	1103	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1104	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1105	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1106
901	fd_change (fd);	1107	fd_change (EV_A_ fd);
902	}	1108	}
903		1109
904	void	1110	void
905	ev_io_stop (struct ev_io *w)	1111	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1112	{
907	ev_clear_pending ((W)w);	1113	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1114	if (!ev_is_active (w))
909	return;	1115	return;
910		1116
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1117	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1118	ev_stop (EV_A_ (W)w);
913		1119
914	fd_change (w->fd);	1120	fd_change (EV_A_ w->fd);
915	}	1121	}
916		1122
917	void	1123	void
918	ev_timer_start (struct ev_timer *w)	1124	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1125	{
920	if (ev_is_active (w))	1126	if (ev_is_active (w))
921	return;	1127	return;
922		1128
923	w->at += now;	1129	w->at += mn_now;
924		1130
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1131	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1132
927	ev_start ((W)w, ++timercnt);	1133	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1134	array_needsize (timers, timermax, timercnt, );
929	timers [timercnt - 1] = w;	1135	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1136	upheap ((WT *)timers, timercnt - 1);
931	}
932		1137
		1138	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1139	}
		1140
933	void	1141	void
934	ev_timer_stop (struct ev_timer *w)	1142	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1143	{
936	ev_clear_pending ((W)w);	1144	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1145	if (!ev_is_active (w))
938	return;	1146	return;
939		1147
		1148	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1149
940	if (w->active < timercnt--)	1150	if (((W)w)->active < timercnt--)
941	{	1151	{
942	timers [w->active - 1] = timers [timercnt];	1152	timers [((W)w)->active - 1] = timers [timercnt];
943	downheap ((WT *)timers, timercnt, w->active - 1);	1153	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
944	}	1154	}
945		1155
946	w->at = w->repeat;	1156	w->at = w->repeat;
947		1157
948	ev_stop ((W)w);	1158	ev_stop (EV_A_ (W)w);
949	}	1159	}
950		1160
951	void	1161	void
952	ev_timer_again (struct ev_timer *w)	1162	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1163	{
954	if (ev_is_active (w))	1164	if (ev_is_active (w))
955	{	1165	{
956	if (w->repeat)	1166	if (w->repeat)
957	{	1167	{
958	w->at = now + w->repeat;	1168	w->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1169	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
960	}	1170	}
961	else	1171	else
962	ev_timer_stop (w);	1172	ev_timer_stop (EV_A_ w);
963	}	1173	}
964	else if (w->repeat)	1174	else if (w->repeat)
965	ev_timer_start (w);	1175	ev_timer_start (EV_A_ w);
966	}	1176	}
967		1177
968	void	1178	void
969	ev_periodic_start (struct ev_periodic *w)	1179	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1180	{
971	if (ev_is_active (w))	1181	if (ev_is_active (w))
972	return;	1182	return;
973		1183
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1184	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
975		1185
976	/* this formula differs from the one in periodic_reify because we do not always round up */	1186	/* this formula differs from the one in periodic_reify because we do not always round up */
977	if (w->interval)	1187	if (w->interval)
978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1188	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
979		1189
980	ev_start ((W)w, ++periodiccnt);	1190	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1191	array_needsize (periodics, periodicmax, periodiccnt, );
982	periodics [periodiccnt - 1] = w;	1192	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1193	upheap ((WT *)periodics, periodiccnt - 1);
984	}
985		1194
		1195	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1196	}
		1197
986	void	1198	void
987	ev_periodic_stop (struct ev_periodic *w)	1199	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1200	{
989	ev_clear_pending ((W)w);	1201	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1202	if (!ev_is_active (w))
991	return;	1203	return;
992		1204
		1205	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1206
993	if (w->active < periodiccnt--)	1207	if (((W)w)->active < periodiccnt--)
994	{	1208	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1209	periodics [((W)w)->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1210	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
997	}	1211	}
998		1212
999	ev_stop ((W)w);	1213	ev_stop (EV_A_ (W)w);
1000	}	1214	}
1001		1215
1002	void	1216	void
1003	ev_signal_start (struct ev_signal *w)	1217	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1218	{
1005	if (ev_is_active (w))	1219	if (ev_is_active (w))
1006	return;	1220	return;
1007		1221
		1222	ev_start (EV_A_ (W)w, ++idlecnt);
		1223	array_needsize (idles, idlemax, idlecnt, );
		1224	idles [idlecnt - 1] = w;
		1225	}
		1226
		1227	void
		1228	ev_idle_stop (EV_P_ struct ev_idle *w)
		1229	{
		1230	ev_clear_pending (EV_A_ (W)w);
		1231	if (ev_is_active (w))
		1232	return;
		1233
		1234	idles [((W)w)->active - 1] = idles [--idlecnt];
		1235	ev_stop (EV_A_ (W)w);
		1236	}
		1237
		1238	void
		1239	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1240	{
		1241	if (ev_is_active (w))
		1242	return;
		1243
		1244	ev_start (EV_A_ (W)w, ++preparecnt);
		1245	array_needsize (prepares, preparemax, preparecnt, );
		1246	prepares [preparecnt - 1] = w;
		1247	}
		1248
		1249	void
		1250	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1251	{
		1252	ev_clear_pending (EV_A_ (W)w);
		1253	if (ev_is_active (w))
		1254	return;
		1255
		1256	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1257	ev_stop (EV_A_ (W)w);
		1258	}
		1259
		1260	void
		1261	ev_check_start (EV_P_ struct ev_check *w)
		1262	{
		1263	if (ev_is_active (w))
		1264	return;
		1265
		1266	ev_start (EV_A_ (W)w, ++checkcnt);
		1267	array_needsize (checks, checkmax, checkcnt, );
		1268	checks [checkcnt - 1] = w;
		1269	}
		1270
		1271	void
		1272	ev_check_stop (EV_P_ struct ev_check *w)
		1273	{
		1274	ev_clear_pending (EV_A_ (W)w);
		1275	if (ev_is_active (w))
		1276	return;
		1277
		1278	checks [((W)w)->active - 1] = checks [--checkcnt];
		1279	ev_stop (EV_A_ (W)w);
		1280	}
		1281
		1282	#ifndef SA_RESTART
		1283	# define SA_RESTART 0
		1284	#endif
		1285
		1286	void
		1287	ev_signal_start (EV_P_ struct ev_signal *w)
		1288	{
		1289	#if EV_MULTIPLICITY
		1290	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1291	#endif
		1292	if (ev_is_active (w))
		1293	return;
		1294
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1295	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1296
1010	ev_start ((W)w, 1);	1297	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1298	array_needsize (signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1299	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1300
1014	if (!w->next)	1301	if (!w->next)
1015	{	1302	{
1016	struct sigaction sa;	1303	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1304	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1305	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1306	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1307	sigaction (w->signum, &sa, 0);
1021	}	1308	}
1022	}	1309	}
1023		1310
1024	void	1311	void
1025	ev_signal_stop (struct ev_signal *w)	1312	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1313	{
1027	ev_clear_pending ((W)w);	1314	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1315	if (!ev_is_active (w))
1029	return;	1316	return;
1030		1317
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1318	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1319	ev_stop (EV_A_ (W)w);
1033		1320
1034	if (!signals [w->signum - 1].head)	1321	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1322	signal (w->signum, SIG_DFL);
1036	}	1323	}
1037		1324
1038	void	1325	void
1039	ev_idle_start (struct ev_idle *w)	1326	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1327	{
		1328	#if EV_MULTIPLICITY
		1329	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1330	#endif
1041	if (ev_is_active (w))	1331	if (ev_is_active (w))
1042	return;	1332	return;
1043		1333
1044	ev_start ((W)w, ++idlecnt);	1334	ev_start (EV_A_ (W)w, 1);
1045	array_needsize (idles, idlemax, idlecnt, );	1335	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1046	idles [idlecnt - 1] = w;
1047	}	1336	}
1048		1337
1049	void	1338	void
1050	ev_idle_stop (struct ev_idle *w)	1339	ev_child_stop (EV_P_ struct ev_child *w)
1051	{	1340	{
1052	ev_clear_pending ((W)w);	1341	ev_clear_pending (EV_A_ (W)w);
1053	if (ev_is_active (w))	1342	if (ev_is_active (w))
1054	return;	1343	return;
1055		1344
1056	idles [w->active - 1] = idles [--idlecnt];
1057	ev_stop ((W)w);
1058	}
1059
1060	void
1061	ev_prepare_start (struct ev_prepare *w)
1062	{
1063	if (ev_is_active (w))
1064	return;
1065
1066	ev_start ((W)w, ++preparecnt);
1067	array_needsize (prepares, preparemax, preparecnt, );
1068	prepares [preparecnt - 1] = w;
1069	}
1070
1071	void
1072	ev_prepare_stop (struct ev_prepare *w)
1073	{
1074	ev_clear_pending ((W)w);
1075	if (ev_is_active (w))
1076	return;
1077
1078	prepares [w->active - 1] = prepares [--preparecnt];
1079	ev_stop ((W)w);
1080	}
1081
1082	void
1083	ev_check_start (struct ev_check *w)
1084	{
1085	if (ev_is_active (w))
1086	return;
1087
1088	ev_start ((W)w, ++checkcnt);
1089	array_needsize (checks, checkmax, checkcnt, );
1090	checks [checkcnt - 1] = w;
1091	}
1092
1093	void
1094	ev_check_stop (struct ev_check *w)
1095	{
1096	ev_clear_pending ((W)w);
1097	if (ev_is_active (w))
1098	return;
1099
1100	checks [w->active - 1] = checks [--checkcnt];
1101	ev_stop ((W)w);
1102	}
1103
1104	void
1105	ev_child_start (struct ev_child *w)
1106	{
1107	if (ev_is_active (w))
1108	return;
1109
1110	ev_start ((W)w, 1);
1111	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	}
1113
1114	void
1115	ev_child_stop (struct ev_child *w)
1116	{
1117	ev_clear_pending ((W)w);
1118	if (ev_is_active (w))
1119	return;
1120
1121	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1345	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1346	ev_stop (EV_A_ (W)w);
1123	}	1347	}
1124		1348
1125	/*****************************************************************************/	1349	/*****************************************************************************/
1126		1350
1127	struct ev_once	1351	struct ev_once
…		…
1131	void (*cb)(int revents, void *arg);	1355	void (*cb)(int revents, void *arg);
1132	void *arg;	1356	void *arg;
1133	};	1357	};
1134		1358
1135	static void	1359	static void
1136	once_cb (struct ev_once *once, int revents)	1360	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1361	{
1138	void (*cb)(int revents, void *arg) = once->cb;	1362	void (*cb)(int revents, void *arg) = once->cb;
1139	void *arg = once->arg;	1363	void *arg = once->arg;
1140		1364
1141	ev_io_stop (&once->io);	1365	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1366	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1367	free (once);
1144		1368
1145	cb (revents, arg);	1369	cb (revents, arg);
1146	}	1370	}
1147		1371
1148	static void	1372	static void
1149	once_cb_io (struct ev_io *w, int revents)	1373	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1374	{
1151	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1375	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1152	}	1376	}
1153		1377
1154	static void	1378	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1379	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1380	{
1157	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1381	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1158	}	1382	}
1159		1383
1160	void	1384	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1385	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1162	{	1386	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1387	struct ev_once *once = malloc (sizeof (struct ev_once));
1164		1388
1165	if (!once)	1389	if (!once)
1166	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1390	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1171		1395
1172	ev_watcher_init (&once->io, once_cb_io);	1396	ev_watcher_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1397	if (fd >= 0)
1174	{	1398	{
1175	ev_io_set (&once->io, fd, events);	1399	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1400	ev_io_start (EV_A_ &once->io);
1177	}	1401	}
1178		1402
1179	ev_watcher_init (&once->to, once_cb_to);	1403	ev_watcher_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1404	if (timeout >= 0.)
1181	{	1405	{
1182	ev_timer_set (&once->to, timeout, 0.);	1406	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1407	ev_timer_start (EV_A_ &once->to);
1184	}	1408	}
1185	}	1409	}
1186	}	1410	}
1187		1411
1188	/*****************************************************************************/
1189
1190	#if 0
1191
1192	struct ev_io wio;
1193
1194	static void
1195	sin_cb (struct ev_io *w, int revents)
1196	{
1197	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1198	}
1199
1200	static void
1201	ocb (struct ev_timer *w, int revents)
1202	{
1203	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1204	ev_timer_stop (w);
1205	ev_timer_start (w);
1206	}
1207
1208	static void
1209	scb (struct ev_signal *w, int revents)
1210	{
1211	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1212	ev_io_stop (&wio);
1213	ev_io_start (&wio);
1214	}
1215
1216	static void
1217	gcb (struct ev_signal *w, int revents)
1218	{
1219	fprintf (stderr, "generic %x\n", revents);
1220
1221	}
1222
1223	int main (void)
1224	{
1225	ev_init (0);
1226
1227	ev_io_init (&wio, sin_cb, 0, EV_READ);
1228	ev_io_start (&wio);
1229
1230	struct ev_timer t[10000];
1231
1232	#if 0
1233	int i;
1234	for (i = 0; i < 10000; ++i)
1235	{
1236	struct ev_timer *w = t + i;
1237	ev_watcher_init (w, ocb, i);
1238	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1239	ev_timer_start (w);
1240	if (drand48 () < 0.5)
1241	ev_timer_stop (w);
1242	}
1243	#endif
1244
1245	struct ev_timer t1;
1246	ev_timer_init (&t1, ocb, 5, 10);
1247	ev_timer_start (&t1);
1248
1249	struct ev_signal sig;
1250	ev_signal_init (&sig, scb, SIGQUIT);
1251	ev_signal_start (&sig);
1252
1253	struct ev_check cw;
1254	ev_check_init (&cw, gcb);
1255	ev_check_start (&cw);
1256
1257	struct ev_idle iw;
1258	ev_idle_init (&iw, gcb);
1259	ev_idle_start (&iw);
1260
1261	ev_loop (0);
1262
1263	return 0;
1264	}
1265
1266	#endif
1267
1268
1269
1270

Diff Legend

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