[ViewVC] Diff of: 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 1.61 by root, Sun Nov 4 19:45:09 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
…		…
111		135
112	typedef struct ev_watcher *W;	136	typedef struct ev_watcher *W;
113	typedef struct ev_watcher_list *WL;	137	typedef struct ev_watcher_list *WL;
114	typedef struct ev_watcher_time *WT;	138	typedef struct ev_watcher_time *WT;
115		139
116	static ev_tstamp now_floor, now, diff; /* monotonic clock */	140	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		141
126	/*****************************************************************************/	142	/*****************************************************************************/
127		143
128	ev_tstamp	144	typedef struct
		145	{
		146	struct ev_watcher_list *head;
		147	unsigned char events;
		148	unsigned char reify;
		149	} ANFD;
		150
		151	typedef struct
		152	{
		153	W w;
		154	int events;
		155	} ANPENDING;
		156
		157	#if EV_MULTIPLICITY
		158
		159	struct ev_loop
		160	{
		161	# define VAR(name,decl) decl;
		162	# include "ev_vars.h"
		163	};
		164	# undef VAR
		165	# include "ev_wrap.h"
		166
		167	#else
		168
		169	# define VAR(name,decl) static decl;
		170	# include "ev_vars.h"
		171	# undef VAR
		172
		173	#endif
		174
		175	/*****************************************************************************/
		176
		177	inline ev_tstamp
129	ev_time (void)	178	ev_time (void)
130	{	179	{
131	#if EV_USE_REALTIME	180	#if EV_USE_REALTIME
132	struct timespec ts;	181	struct timespec ts;
133	clock_gettime (CLOCK_REALTIME, &ts);	182	clock_gettime (CLOCK_REALTIME, &ts);
…		…
137	gettimeofday (&tv, 0);	186	gettimeofday (&tv, 0);
138	return tv.tv_sec + tv.tv_usec * 1e-6;	187	return tv.tv_sec + tv.tv_usec * 1e-6;
139	#endif	188	#endif
140	}	189	}
141		190
142	static ev_tstamp	191	inline ev_tstamp
143	get_clock (void)	192	get_clock (void)
144	{	193	{
145	#if EV_USE_MONOTONIC	194	#if EV_USE_MONOTONIC
146	if (expect_true (have_monotonic))	195	if (expect_true (have_monotonic))
147	{	196	{
…		…
150	return ts.tv_sec + ts.tv_nsec * 1e-9;	199	return ts.tv_sec + ts.tv_nsec * 1e-9;
151	}	200	}
152	#endif	201	#endif
153		202
154	return ev_time ();	203	return ev_time ();
		204	}
		205
		206	ev_tstamp
		207	ev_now (EV_P)
		208	{
		209	return rt_now;
155	}	210	}
156		211
157	#define array_roundsize(base,n) ((n) \| 4 & ~3)	212	#define array_roundsize(base,n) ((n) \| 4 & ~3)
158		213
159	#define array_needsize(base,cur,cnt,init) \	214	#define array_needsize(base,cur,cnt,init) \
…		…
171	cur = newcnt; \	226	cur = newcnt; \
172	}	227	}
173		228
174	/*****************************************************************************/	229	/*****************************************************************************/
175		230
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	231	static void
187	anfds_init (ANFD *base, int count)	232	anfds_init (ANFD *base, int count)
188	{	233	{
189	while (count--)	234	while (count--)
190	{	235	{
…		…
194		239
195	++base;	240	++base;
196	}	241	}
197	}	242	}
198		243
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	244	static void
209	event (W w, int events)	245	event (EV_P_ W w, int events)
210	{	246	{
211	if (w->pending)	247	if (w->pending)
212	{	248	{
213	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	249	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
214	return;	250	return;
…		…
219	pendings [ABSPRI (w)][w->pending - 1].w = w;	255	pendings [ABSPRI (w)][w->pending - 1].w = w;
220	pendings [ABSPRI (w)][w->pending - 1].events = events;	256	pendings [ABSPRI (w)][w->pending - 1].events = events;
221	}	257	}
222		258
223	static void	259	static void
224	queue_events (W *events, int eventcnt, int type)	260	queue_events (EV_P_ W *events, int eventcnt, int type)
225	{	261	{
226	int i;	262	int i;
227		263
228	for (i = 0; i < eventcnt; ++i)	264	for (i = 0; i < eventcnt; ++i)
229	event (events [i], type);	265	event (EV_A_ events [i], type);
230	}	266	}
231		267
232	static void	268	static void
233	fd_event (int fd, int events)	269	fd_event (EV_P_ int fd, int events)
234	{	270	{
235	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
236	struct ev_io *w;	272	struct ev_io *w;
237		273
238	for (w = anfd->head; w; w = w->next)	274	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
239	{	275	{
240	int ev = w->events & events;	276	int ev = w->events & events;
241		277
242	if (ev)	278	if (ev)
243	event ((W)w, ev);	279	event (EV_A_ (W)w, ev);
244	}	280	}
245	}	281	}
246		282
247	/*****************************************************************************/	283	/*****************************************************************************/
248		284
249	static int *fdchanges;
250	static int fdchangemax, fdchangecnt;
251
252	static void	285	static void
253	fd_reify (void)	286	fd_reify (EV_P)
254	{	287	{
255	int i;	288	int i;
256		289
257	for (i = 0; i < fdchangecnt; ++i)	290	for (i = 0; i < fdchangecnt; ++i)
258	{	291	{
…		…
260	ANFD *anfd = anfds + fd;	293	ANFD *anfd = anfds + fd;
261	struct ev_io *w;	294	struct ev_io *w;
262		295
263	int events = 0;	296	int events = 0;
264		297
265	for (w = anfd->head; w; w = w->next)	298	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
266	events \|= w->events;	299	events \|= w->events;
267		300
268	anfd->reify = 0;	301	anfd->reify = 0;
269		302
270	if (anfd->events != events)	303	if (anfd->events != events)
271	{	304	{
272	method_modify (fd, anfd->events, events);	305	method_modify (EV_A_ fd, anfd->events, events);
273	anfd->events = events;	306	anfd->events = events;
274	}	307	}
275	}	308	}
276		309
277	fdchangecnt = 0;	310	fdchangecnt = 0;
278	}	311	}
279		312
280	static void	313	static void
281	fd_change (int fd)	314	fd_change (EV_P_ int fd)
282	{	315	{
283	if (anfds [fd].reify \|\| fdchangecnt < 0)	316	if (anfds [fd].reify \|\| fdchangecnt < 0)
284	return;	317	return;
285		318
286	anfds [fd].reify = 1;	319	anfds [fd].reify = 1;
…		…
289	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
290	fdchanges [fdchangecnt - 1] = fd;	323	fdchanges [fdchangecnt - 1] = fd;
291	}	324	}
292		325
293	static void	326	static void
294	fd_kill (int fd)	327	fd_kill (EV_P_ int fd)
295	{	328	{
296	struct ev_io *w;	329	struct ev_io *w;
297		330
298	printf ("killing fd %d\n", fd);//D
299	while ((w = anfds [fd].head))	331	while ((w = (struct ev_io *)anfds [fd].head))
300	{	332	{
301	ev_io_stop (w);	333	ev_io_stop (EV_A_ w);
302	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	334	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
303	}	335	}
304	}	336	}
305		337
306	/* called on EBADF to verify fds */	338	/* called on EBADF to verify fds */
307	static void	339	static void
308	fd_ebadf (void)	340	fd_ebadf (EV_P)
309	{	341	{
310	int fd;	342	int fd;
311		343
312	for (fd = 0; fd < anfdmax; ++fd)	344	for (fd = 0; fd < anfdmax; ++fd)
313	if (anfds [fd].events)	345	if (anfds [fd].events)
314	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
315	fd_kill (fd);	347	fd_kill (EV_A_ fd);
316	}	348	}
317		349
318	/* called on ENOMEM in select/poll to kill some fds and retry */	350	/* called on ENOMEM in select/poll to kill some fds and retry */
319	static void	351	static void
320	fd_enomem (void)	352	fd_enomem (EV_P)
321	{	353	{
322	int fd = anfdmax;	354	int fd = anfdmax;
323		355
324	while (fd--)	356	while (fd--)
325	if (anfds [fd].events)	357	if (anfds [fd].events)
326	{	358	{
327	close (fd);	359	close (fd);
328	fd_kill (fd);	360	fd_kill (EV_A_ fd);
329	return;	361	return;
330	}	362	}
331	}	363	}
332		364
		365	/* susually called after fork if method needs to re-arm all fds from scratch */
		366	static void
		367	fd_rearm_all (EV_P)
		368	{
		369	int fd;
		370
		371	/* this should be highly optimised to not do anything but set a flag */
		372	for (fd = 0; fd < anfdmax; ++fd)
		373	if (anfds [fd].events)
		374	{
		375	anfds [fd].events = 0;
		376	fd_change (EV_A_ fd);
		377	}
		378	}
		379
333	/*****************************************************************************/	380	/*****************************************************************************/
334		381
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	382	static void
342	upheap (WT *timers, int k)	383	upheap (WT *heap, int k)
343	{	384	{
344	WT w = timers [k];	385	WT w = heap [k];
345		386
346	while (k && timers [k >> 1]->at > w->at)	387	while (k && heap [k >> 1]->at > w->at)
347	{	388	{
348	timers [k] = timers [k >> 1];	389	heap [k] = heap [k >> 1];
349	timers [k]->active = k + 1;	390	heap [k]->active = k + 1;
350	k >>= 1;	391	k >>= 1;
351	}	392	}
352		393
353	timers [k] = w;	394	heap [k] = w;
354	timers [k]->active = k + 1;	395	heap [k]->active = k + 1;
355		396
356	}	397	}
357		398
358	static void	399	static void
359	downheap (WT *timers, int N, int k)	400	downheap (WT *heap, int N, int k)
360	{	401	{
361	WT w = timers [k];	402	WT w = heap [k];
362		403
363	while (k < (N >> 1))	404	while (k < (N >> 1))
364	{	405	{
365	int j = k << 1;	406	int j = k << 1;
366		407
367	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	408	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
368	++j;	409	++j;
369		410
370	if (w->at <= timers [j]->at)	411	if (w->at <= heap [j]->at)
371	break;	412	break;
372		413
373	timers [k] = timers [j];	414	heap [k] = heap [j];
374	timers [k]->active = k + 1;	415	heap [k]->active = k + 1;
375	k = j;	416	k = j;
376	}	417	}
377		418
378	timers [k] = w;	419	heap [k] = w;
379	timers [k]->active = k + 1;	420	heap [k]->active = k + 1;
380	}	421	}
381		422
382	/*****************************************************************************/	423	/*****************************************************************************/
383		424
384	typedef struct	425	typedef struct
385	{	426	{
386	struct ev_signal *head;	427	struct ev_watcher_list *head;
387	sig_atomic_t volatile gotsig;	428	sig_atomic_t volatile gotsig;
388	} ANSIG;	429	} ANSIG;
389		430
390	static ANSIG *signals;	431	static ANSIG *signals;
391	static int signalmax;	432	static int signalmax;
…		…
411	{	452	{
412	signals [signum - 1].gotsig = 1;	453	signals [signum - 1].gotsig = 1;
413		454
414	if (!gotsig)	455	if (!gotsig)
415	{	456	{
		457	int old_errno = errno;
416	gotsig = 1;	458	gotsig = 1;
417	write (sigpipe [1], &signum, 1);	459	write (sigpipe [1], &signum, 1);
		460	errno = old_errno;
418	}	461	}
419	}	462	}
420		463
421	static void	464	static void
422	sigcb (struct ev_io *iow, int revents)	465	sigcb (EV_P_ struct ev_io *iow, int revents)
423	{	466	{
424	struct ev_signal *w;	467	struct ev_watcher_list *w;
425	int signum;	468	int signum;
426		469
427	read (sigpipe [0], &revents, 1);	470	read (sigpipe [0], &revents, 1);
428	gotsig = 0;	471	gotsig = 0;
429		472
…		…
431	if (signals [signum].gotsig)	474	if (signals [signum].gotsig)
432	{	475	{
433	signals [signum].gotsig = 0;	476	signals [signum].gotsig = 0;
434		477
435	for (w = signals [signum].head; w; w = w->next)	478	for (w = signals [signum].head; w; w = w->next)
436	event ((W)w, EV_SIGNAL);	479	event (EV_A_ (W)w, EV_SIGNAL);
437	}	480	}
438	}	481	}
439		482
440	static void	483	static void
441	siginit (void)	484	siginit (EV_P)
442	{	485	{
		486	#ifndef WIN32
443	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
444	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
445		489
446	/* rather than sort out wether we really need nb, set it */	490	/* rather than sort out wether we really need nb, set it */
447	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
448	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		493	#endif
449		494
450	ev_io_set (&sigev, sigpipe [0], EV_READ);	495	ev_io_set (&sigev, sigpipe [0], EV_READ);
451	ev_io_start (&sigev);	496	ev_io_start (EV_A_ &sigev);
		497	ev_unref (EV_A); /* child watcher should not keep loop alive */
452	}	498	}
453		499
454	/*****************************************************************************/	500	/*****************************************************************************/
455		501
456	static struct ev_idle **idles;	502	#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		503
467	static struct ev_child *childs [PID_HASHSIZE];	504	static struct ev_child *childs [PID_HASHSIZE];
468	static struct ev_signal childev;	505	static struct ev_signal childev;
469		506
470	#ifndef WCONTINUED	507	#ifndef WCONTINUED
471	# define WCONTINUED 0	508	# define WCONTINUED 0
472	#endif	509	#endif
473		510
474	static void	511	static void
475	childcb (struct ev_signal *sw, int revents)	512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
476	{	513	{
477	struct ev_child *w;	514	struct ev_child *w;
		515
		516	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		517	if (w->pid == pid \|\| !w->pid)
		518	{
		519	w->priority = sw->priority; /* need to do it now */
		520	w->rpid = pid;
		521	w->rstatus = status;
		522	event (EV_A_ (W)w, EV_CHILD);
		523	}
		524	}
		525
		526	static void
		527	childcb (EV_P_ struct ev_signal *sw, int revents)
		528	{
478	int pid, status;	529	int pid, status;
479		530
480	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	531	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
481	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	532	{
482	if (w->pid == pid \|\| !w->pid)	533	/* make sure we are called again until all childs have been reaped */
483	{	534	event (EV_A_ (W)sw, EV_SIGNAL);
484	w->status = status;	535
485	event ((W)w, EV_CHILD);	536	child_reap (EV_A_ sw, pid, pid, status);
486	}	537	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		538	}
487	}	539	}
		540
		541	#endif
488		542
489	/*****************************************************************************/	543	/*****************************************************************************/
490		544
491	#if EV_USE_KQUEUE	545	#if EV_USE_KQUEUE
492	# include "ev_kqueue.c"	546	# include "ev_kqueue.c"
…		…
511	ev_version_minor (void)	565	ev_version_minor (void)
512	{	566	{
513	return EV_VERSION_MINOR;	567	return EV_VERSION_MINOR;
514	}	568	}
515		569
516	/* return true if we are running with elevated privileges and ignore env variables */	570	/* return true if we are running with elevated privileges and should ignore env variables */
517	static int	571	static int
518	enable_secure ()	572	enable_secure (void)
519	{	573	{
		574	#ifdef WIN32
		575	return 0;
		576	#else
520	return getuid () != geteuid ()	577	return getuid () != geteuid ()
521	\|\| getgid () != getegid ();	578	\|\| getgid () != getegid ();
		579	#endif
522	}	580	}
523		581
524	int ev_init (int methods)	582	int
		583	ev_method (EV_P)
525	{	584	{
		585	return method;
		586	}
		587
		588	static void
		589	loop_init (EV_P_ int methods)
		590	{
526	if (!ev_method)	591	if (!method)
527	{	592	{
528	#if EV_USE_MONOTONIC	593	#if EV_USE_MONOTONIC
529	{	594	{
530	struct timespec ts;	595	struct timespec ts;
531	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
532	have_monotonic = 1;	597	have_monotonic = 1;
533	}	598	}
534	#endif	599	#endif
535		600
536	ev_now = ev_time ();	601	rt_now = ev_time ();
537	now = get_clock ();	602	mn_now = get_clock ();
538	now_floor = now;	603	now_floor = mn_now;
539	diff = ev_now - now;	604	rtmn_diff = rt_now - mn_now;
540
541	if (pipe (sigpipe))
542	return 0;
543		605
544	if (methods == EVMETHOD_AUTO)	606	if (methods == EVMETHOD_AUTO)
545	if (!enable_secure () && getenv ("LIBEV_METHODS"))	607	if (!enable_secure () && getenv ("LIBEV_METHODS"))
546	methods = atoi (getenv ("LIBEV_METHODS"));	608	methods = atoi (getenv ("LIBEV_METHODS"));
547	else	609	else
548	methods = EVMETHOD_ANY;	610	methods = EVMETHOD_ANY;
549		611
550	ev_method = 0;	612	method = 0;
551	#if EV_USE_KQUEUE	613	#if EV_USE_KQUEUE
552	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
553	#endif	615	#endif
554	#if EV_USE_EPOLL	616	#if EV_USE_EPOLL
555	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
556	#endif	618	#endif
557	#if EV_USE_POLL	619	#if EV_USE_POLL
558	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
559	#endif	621	#endif
560	#if EV_USE_SELECT	622	#if EV_USE_SELECT
561	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
562	#endif	624	#endif
		625	}
		626	}
563		627
		628	void
		629	loop_destroy (EV_P)
		630	{
		631	#if EV_USE_KQUEUE
		632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		633	#endif
		634	#if EV_USE_EPOLL
		635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		636	#endif
		637	#if EV_USE_POLL
		638	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		639	#endif
		640	#if EV_USE_SELECT
		641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		642	#endif
		643
		644	method = 0;
		645	/TODO/
		646	}
		647
		648	void
		649	loop_fork (EV_P)
		650	{
		651	/TODO/
		652	#if EV_USE_EPOLL
		653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		654	#endif
		655	#if EV_USE_KQUEUE
		656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		657	#endif
		658	}
		659
		660	#if EV_MULTIPLICITY
		661	struct ev_loop *
		662	ev_loop_new (int methods)
		663	{
		664	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		665
		666	loop_init (EV_A_ methods);
		667
		668	if (ev_method (EV_A))
		669	return loop;
		670
		671	return 0;
		672	}
		673
		674	void
		675	ev_loop_destroy (EV_P)
		676	{
		677	loop_destroy (EV_A);
		678	free (loop);
		679	}
		680
		681	void
		682	ev_loop_fork (EV_P)
		683	{
		684	loop_fork (EV_A);
		685	}
		686
		687	#endif
		688
		689	#if EV_MULTIPLICITY
		690	struct ev_loop default_loop_struct;
		691	static struct ev_loop *default_loop;
		692
		693	struct ev_loop *
		694	#else
		695	static int default_loop;
		696
		697	int
		698	#endif
		699	ev_default_loop (int methods)
		700	{
		701	if (sigpipe [0] == sigpipe [1])
		702	if (pipe (sigpipe))
		703	return 0;
		704
		705	if (!default_loop)
		706	{
		707	#if EV_MULTIPLICITY
		708	struct ev_loop *loop = default_loop = &default_loop_struct;
		709	#else
		710	default_loop = 1;
		711	#endif
		712
		713	loop_init (EV_A_ methods);
		714
564	if (ev_method)	715	if (ev_method (EV_A))
565	{	716	{
566	ev_watcher_init (&sigev, sigcb);	717	ev_watcher_init (&sigev, sigcb);
		718	ev_set_priority (&sigev, EV_MAXPRI);
567	siginit ();	719	siginit (EV_A);
568		720
		721	#ifndef WIN32
569	ev_signal_init (&childev, childcb, SIGCHLD);	722	ev_signal_init (&childev, childcb, SIGCHLD);
		723	ev_set_priority (&childev, EV_MAXPRI);
570	ev_signal_start (&childev);	724	ev_signal_start (EV_A_ &childev);
		725	ev_unref (EV_A); /* child watcher should not keep loop alive */
		726	#endif
571	}	727	}
		728	else
		729	default_loop = 0;
572	}	730	}
573		731
574	return ev_method;	732	return default_loop;
575	}	733	}
576		734
577	/*****************************************************************************/
578
579	void	735	void
580	ev_fork_prepare (void)	736	ev_default_destroy (void)
581	{	737	{
582	/* nop */	738	#if EV_MULTIPLICITY
583	}	739	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	740	#endif
598		741
		742	ev_ref (EV_A); /* child watcher */
		743	ev_signal_stop (EV_A_ &childev);
		744
		745	ev_ref (EV_A); /* signal watcher */
599	ev_io_stop (&sigev);	746	ev_io_stop (EV_A_ &sigev);
		747
		748	close (sigpipe [0]); sigpipe [0] = 0;
		749	close (sigpipe [1]); sigpipe [1] = 0;
		750
		751	loop_destroy (EV_A);
		752	}
		753
		754	void
		755	ev_default_fork (void)
		756	{
		757	#if EV_MULTIPLICITY
		758	struct ev_loop *loop = default_loop;
		759	#endif
		760
		761	loop_fork (EV_A);
		762
		763	ev_io_stop (EV_A_ &sigev);
600	close (sigpipe [0]);	764	close (sigpipe [0]);
601	close (sigpipe [1]);	765	close (sigpipe [1]);
602	pipe (sigpipe);	766	pipe (sigpipe);
		767
		768	ev_ref (EV_A); /* signal watcher */
603	siginit ();	769	siginit (EV_A);
604	}	770	}
605		771
606	/*****************************************************************************/	772	/*****************************************************************************/
607		773
608	static void	774	static void
609	call_pending (void)	775	call_pending (EV_P)
610	{	776	{
611	int pri;	777	int pri;
612		778
613	for (pri = NUMPRI; pri--; )	779	for (pri = NUMPRI; pri--; )
614	while (pendingcnt [pri])	780	while (pendingcnt [pri])
…		…
616	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
617		783
618	if (p->w)	784	if (p->w)
619	{	785	{
620	p->w->pending = 0;	786	p->w->pending = 0;
621	p->w->cb (p->w, p->events);	787	p->w->cb (EV_A_ p->w, p->events);
622	}	788	}
623	}	789	}
624	}	790	}
625		791
626	static void	792	static void
627	timers_reify (void)	793	timers_reify (EV_P)
628	{	794	{
629	while (timercnt && timers [0]->at <= now)	795	while (timercnt && timers [0]->at <= mn_now)
630	{	796	{
631	struct ev_timer *w = timers [0];	797	struct ev_timer *w = timers [0];
		798
		799	assert (("inactive timer on timer heap detected", ev_is_active (w)));
632		800
633	/* first reschedule or stop timer */	801	/* first reschedule or stop timer */
634	if (w->repeat)	802	if (w->repeat)
635	{	803	{
636	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	804	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
637	w->at = now + w->repeat;	805	w->at = mn_now + w->repeat;
638	downheap ((WT *)timers, timercnt, 0);	806	downheap ((WT *)timers, timercnt, 0);
639	}	807	}
640	else	808	else
641	ev_timer_stop (w); /* nonrepeating: stop timer */	809	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
642		810
643	event ((W)w, EV_TIMEOUT);	811	event (EV_A_ (W)w, EV_TIMEOUT);
644	}	812	}
645	}	813	}
646		814
647	static void	815	static void
648	periodics_reify (void)	816	periodics_reify (EV_P)
649	{	817	{
650	while (periodiccnt && periodics [0]->at <= ev_now)	818	while (periodiccnt && periodics [0]->at <= rt_now)
651	{	819	{
652	struct ev_periodic *w = periodics [0];	820	struct ev_periodic *w = periodics [0];
		821
		822	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
653		823
654	/* first reschedule or stop timer */	824	/* first reschedule or stop timer */
655	if (w->interval)	825	if (w->interval)
656	{	826	{
657	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	827	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));	828	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
659	downheap ((WT *)periodics, periodiccnt, 0);	829	downheap ((WT *)periodics, periodiccnt, 0);
660	}	830	}
661	else	831	else
662	ev_periodic_stop (w); /* nonrepeating: stop timer */	832	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
663		833
664	event ((W)w, EV_PERIODIC);	834	event (EV_A_ (W)w, EV_PERIODIC);
665	}	835	}
666	}	836	}
667		837
668	static void	838	static void
669	periodics_reschedule (ev_tstamp diff)	839	periodics_reschedule (EV_P)
670	{	840	{
671	int i;	841	int i;
672		842
673	/* adjust periodics after time jump */	843	/* adjust periodics after time jump */
674	for (i = 0; i < periodiccnt; ++i)	844	for (i = 0; i < periodiccnt; ++i)
675	{	845	{
676	struct ev_periodic *w = periodics [i];	846	struct ev_periodic *w = periodics [i];
677		847
678	if (w->interval)	848	if (w->interval)
679	{	849	{
680	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	850	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
681		851
682	if (fabs (diff) >= 1e-4)	852	if (fabs (diff) >= 1e-4)
683	{	853	{
684	ev_periodic_stop (w);	854	ev_periodic_stop (EV_A_ w);
685	ev_periodic_start (w);	855	ev_periodic_start (EV_A_ w);
686		856
687	i = 0; /* restart loop, inefficient, but time jumps should be rare */	857	i = 0; /* restart loop, inefficient, but time jumps should be rare */
688	}	858	}
689	}	859	}
690	}	860	}
691	}	861	}
692		862
693	static int	863	inline int
694	time_update_monotonic (void)	864	time_update_monotonic (EV_P)
695	{	865	{
696	now = get_clock ();	866	mn_now = get_clock ();
697		867
698	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	868	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
699	{	869	{
700	ev_now = now + diff;	870	rt_now = rtmn_diff + mn_now;
701	return 0;	871	return 0;
702	}	872	}
703	else	873	else
704	{	874	{
705	now_floor = now;	875	now_floor = mn_now;
706	ev_now = ev_time ();	876	rt_now = ev_time ();
707	return 1;	877	return 1;
708	}	878	}
709	}	879	}
710		880
711	static void	881	static void
712	time_update (void)	882	time_update (EV_P)
713	{	883	{
714	int i;	884	int i;
715		885
716	#if EV_USE_MONOTONIC	886	#if EV_USE_MONOTONIC
717	if (expect_true (have_monotonic))	887	if (expect_true (have_monotonic))
718	{	888	{
719	if (time_update_monotonic ())	889	if (time_update_monotonic (EV_A))
720	{	890	{
721	ev_tstamp odiff = diff;	891	ev_tstamp odiff = rtmn_diff;
722		892
723	for (i = 4; --i; ) /* loop a few times, before making important decisions */	893	for (i = 4; --i; ) /* loop a few times, before making important decisions */
724	{	894	{
725	diff = ev_now - now;	895	rtmn_diff = rt_now - mn_now;
726		896
727	if (fabs (odiff - diff) < MIN_TIMEJUMP)	897	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
728	return; /* all is well */	898	return; /* all is well */
729		899
730	ev_now = ev_time ();	900	rt_now = ev_time ();
731	now = get_clock ();	901	mn_now = get_clock ();
732	now_floor = now;	902	now_floor = mn_now;
733	}	903	}
734		904
735	periodics_reschedule (diff - odiff);	905	periodics_reschedule (EV_A);
736	/* no timer adjustment, as the monotonic clock doesn't jump */	906	/* no timer adjustment, as the monotonic clock doesn't jump */
		907	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
737	}	908	}
738	}	909	}
739	else	910	else
740	#endif	911	#endif
741	{	912	{
742	ev_now = ev_time ();	913	rt_now = ev_time ();
743		914
744	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	915	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
745	{	916	{
746	periodics_reschedule (ev_now - now);	917	periodics_reschedule (EV_A);
747		918
748	/* adjust timers. this is easy, as the offset is the same for all */	919	/* adjust timers. this is easy, as the offset is the same for all */
749	for (i = 0; i < timercnt; ++i)	920	for (i = 0; i < timercnt; ++i)
750	timers [i]->at += diff;	921	timers [i]->at += rt_now - mn_now;
751	}	922	}
752		923
753	now = ev_now;	924	mn_now = rt_now;
754	}	925	}
755	}	926	}
756		927
757	int ev_loop_done;	928	void
		929	ev_ref (EV_P)
		930	{
		931	++activecnt;
		932	}
758		933
		934	void
		935	ev_unref (EV_P)
		936	{
		937	--activecnt;
		938	}
		939
		940	static int loop_done;
		941
		942	void
759	void ev_loop (int flags)	943	ev_loop (EV_P_ int flags)
760	{	944	{
761	double block;	945	double block;
762	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	946	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
763		947
764	do	948	do
765	{	949	{
766	/* queue check watchers (and execute them) */	950	/* queue check watchers (and execute them) */
767	if (expect_false (preparecnt))	951	if (expect_false (preparecnt))
768	{	952	{
769	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	953	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
770	call_pending ();	954	call_pending (EV_A);
771	}	955	}
772		956
773	/* update fd-related kernel structures */	957	/* update fd-related kernel structures */
774	fd_reify ();	958	fd_reify (EV_A);
775		959
776	/* calculate blocking time */	960	/* calculate blocking time */
777		961
778	/* we only need this for !monotonic clockor timers, but as we basically	962	/* we only need this for !monotonic clockor timers, but as we basically
779	always have timers, we just calculate it always */	963	always have timers, we just calculate it always */
780	#if EV_USE_MONOTONIC	964	#if EV_USE_MONOTONIC
781	if (expect_true (have_monotonic))	965	if (expect_true (have_monotonic))
782	time_update_monotonic ();	966	time_update_monotonic (EV_A);
783	else	967	else
784	#endif	968	#endif
785	{	969	{
786	ev_now = ev_time ();	970	rt_now = ev_time ();
787	now = ev_now;	971	mn_now = rt_now;
788	}	972	}
789		973
790	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	974	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
791	block = 0.;	975	block = 0.;
792	else	976	else
793	{	977	{
794	block = MAX_BLOCKTIME;	978	block = MAX_BLOCKTIME;
795		979
796	if (timercnt)	980	if (timercnt)
797	{	981	{
798	ev_tstamp to = timers [0]->at - now + method_fudge;	982	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
799	if (block > to) block = to;	983	if (block > to) block = to;
800	}	984	}
801		985
802	if (periodiccnt)	986	if (periodiccnt)
803	{	987	{
804	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	988	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
805	if (block > to) block = to;	989	if (block > to) block = to;
806	}	990	}
807		991
808	if (block < 0.) block = 0.;	992	if (block < 0.) block = 0.;
809	}	993	}
810		994
811	method_poll (block);	995	method_poll (EV_A_ block);
812		996
813	/* update ev_now, do magic */	997	/* update rt_now, do magic */
814	time_update ();	998	time_update (EV_A);
815		999
816	/* queue pending timers and reschedule them */	1000	/* queue pending timers and reschedule them */
817	timers_reify (); /* relative timers called last */	1001	timers_reify (EV_A); /* relative timers called last */
818	periodics_reify (); /* absolute timers called first */	1002	periodics_reify (EV_A); /* absolute timers called first */
819		1003
820	/* queue idle watchers unless io or timers are pending */	1004	/* queue idle watchers unless io or timers are pending */
821	if (!pendingcnt)	1005	if (!pendingcnt)
822	queue_events ((W *)idles, idlecnt, EV_IDLE);	1006	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
823		1007
824	/* queue check watchers, to be executed first */	1008	/* queue check watchers, to be executed first */
825	if (checkcnt)	1009	if (checkcnt)
826	queue_events ((W *)checks, checkcnt, EV_CHECK);	1010	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
827		1011
828	call_pending ();	1012	call_pending (EV_A);
829	}	1013	}
830	while (!ev_loop_done);	1014	while (activecnt && !loop_done);
831		1015
832	if (ev_loop_done != 2)	1016	if (loop_done != 2)
833	ev_loop_done = 0;	1017	loop_done = 0;
		1018	}
		1019
		1020	void
		1021	ev_unloop (EV_P_ int how)
		1022	{
		1023	loop_done = how;
834	}	1024	}
835		1025
836	/*****************************************************************************/	1026	/*****************************************************************************/
837		1027
838	static void	1028	inline void
839	wlist_add (WL *head, WL elem)	1029	wlist_add (WL *head, WL elem)
840	{	1030	{
841	elem->next = *head;	1031	elem->next = *head;
842	*head = elem;	1032	*head = elem;
843	}	1033	}
844		1034
845	static void	1035	inline void
846	wlist_del (WL *head, WL elem)	1036	wlist_del (WL *head, WL elem)
847	{	1037	{
848	while (*head)	1038	while (*head)
849	{	1039	{
850	if (*head == elem)	1040	if (*head == elem)
…		…
855		1045
856	head = &(*head)->next;	1046	head = &(*head)->next;
857	}	1047	}
858	}	1048	}
859		1049
860	static void	1050	inline void
861	ev_clear_pending (W w)	1051	ev_clear_pending (EV_P_ W w)
862	{	1052	{
863	if (w->pending)	1053	if (w->pending)
864	{	1054	{
865	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1055	pendings [ABSPRI (w)][w->pending - 1].w = 0;
866	w->pending = 0;	1056	w->pending = 0;
867	}	1057	}
868	}	1058	}
869		1059
870	static void	1060	inline void
871	ev_start (W w, int active)	1061	ev_start (EV_P_ W w, int active)
872	{	1062	{
873	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1063	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
874	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1064	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
875		1065
876	w->active = active;	1066	w->active = active;
		1067	ev_ref (EV_A);
877	}	1068	}
878		1069
879	static void	1070	inline void
880	ev_stop (W w)	1071	ev_stop (EV_P_ W w)
881	{	1072	{
		1073	ev_unref (EV_A);
882	w->active = 0;	1074	w->active = 0;
883	}	1075	}
884		1076
885	/*****************************************************************************/	1077	/*****************************************************************************/
886		1078
887	void	1079	void
888	ev_io_start (struct ev_io *w)	1080	ev_io_start (EV_P_ struct ev_io *w)
889	{	1081	{
890	int fd = w->fd;	1082	int fd = w->fd;
891		1083
892	if (ev_is_active (w))	1084	if (ev_is_active (w))
893	return;	1085	return;
894		1086
895	assert (("ev_io_start called with negative fd", fd >= 0));	1087	assert (("ev_io_start called with negative fd", fd >= 0));
896		1088
897	ev_start ((W)w, 1);	1089	ev_start (EV_A_ (W)w, 1);
898	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1090	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
899	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1091	wlist_add ((WL *)&anfds[fd].head, (WL)w);
900		1092
901	fd_change (fd);	1093	fd_change (EV_A_ fd);
902	}	1094	}
903		1095
904	void	1096	void
905	ev_io_stop (struct ev_io *w)	1097	ev_io_stop (EV_P_ struct ev_io *w)
906	{	1098	{
907	ev_clear_pending ((W)w);	1099	ev_clear_pending (EV_A_ (W)w);
908	if (!ev_is_active (w))	1100	if (!ev_is_active (w))
909	return;	1101	return;
910		1102
911	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1103	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
912	ev_stop ((W)w);	1104	ev_stop (EV_A_ (W)w);
913		1105
914	fd_change (w->fd);	1106	fd_change (EV_A_ w->fd);
915	}	1107	}
916		1108
917	void	1109	void
918	ev_timer_start (struct ev_timer *w)	1110	ev_timer_start (EV_P_ struct ev_timer *w)
919	{	1111	{
920	if (ev_is_active (w))	1112	if (ev_is_active (w))
921	return;	1113	return;
922		1114
923	w->at += now;	1115	w->at += mn_now;
924		1116
925	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1117	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
926		1118
927	ev_start ((W)w, ++timercnt);	1119	ev_start (EV_A_ (W)w, ++timercnt);
928	array_needsize (timers, timermax, timercnt, );	1120	array_needsize (timers, timermax, timercnt, );
929	timers [timercnt - 1] = w;	1121	timers [timercnt - 1] = w;
930	upheap ((WT *)timers, timercnt - 1);	1122	upheap ((WT *)timers, timercnt - 1);
931	}	1123	}
932		1124
933	void	1125	void
934	ev_timer_stop (struct ev_timer *w)	1126	ev_timer_stop (EV_P_ struct ev_timer *w)
935	{	1127	{
936	ev_clear_pending ((W)w);	1128	ev_clear_pending (EV_A_ (W)w);
937	if (!ev_is_active (w))	1129	if (!ev_is_active (w))
938	return;	1130	return;
939		1131
940	if (w->active < timercnt--)	1132	if (w->active < timercnt--)
941	{	1133	{
…		…
943	downheap ((WT *)timers, timercnt, w->active - 1);	1135	downheap ((WT *)timers, timercnt, w->active - 1);
944	}	1136	}
945		1137
946	w->at = w->repeat;	1138	w->at = w->repeat;
947		1139
948	ev_stop ((W)w);	1140	ev_stop (EV_A_ (W)w);
949	}	1141	}
950		1142
951	void	1143	void
952	ev_timer_again (struct ev_timer *w)	1144	ev_timer_again (EV_P_ struct ev_timer *w)
953	{	1145	{
954	if (ev_is_active (w))	1146	if (ev_is_active (w))
955	{	1147	{
956	if (w->repeat)	1148	if (w->repeat)
957	{	1149	{
958	w->at = now + w->repeat;	1150	w->at = mn_now + w->repeat;
959	downheap ((WT *)timers, timercnt, w->active - 1);	1151	downheap ((WT *)timers, timercnt, w->active - 1);
960	}	1152	}
961	else	1153	else
962	ev_timer_stop (w);	1154	ev_timer_stop (EV_A_ w);
963	}	1155	}
964	else if (w->repeat)	1156	else if (w->repeat)
965	ev_timer_start (w);	1157	ev_timer_start (EV_A_ w);
966	}	1158	}
967		1159
968	void	1160	void
969	ev_periodic_start (struct ev_periodic *w)	1161	ev_periodic_start (EV_P_ struct ev_periodic *w)
970	{	1162	{
971	if (ev_is_active (w))	1163	if (ev_is_active (w))
972	return;	1164	return;
973		1165
974	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1166	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
975		1167
976	/* this formula differs from the one in periodic_reify because we do not always round up */	1168	/* this formula differs from the one in periodic_reify because we do not always round up */
977	if (w->interval)	1169	if (w->interval)
978	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1170	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
979		1171
980	ev_start ((W)w, ++periodiccnt);	1172	ev_start (EV_A_ (W)w, ++periodiccnt);
981	array_needsize (periodics, periodicmax, periodiccnt, );	1173	array_needsize (periodics, periodicmax, periodiccnt, );
982	periodics [periodiccnt - 1] = w;	1174	periodics [periodiccnt - 1] = w;
983	upheap ((WT *)periodics, periodiccnt - 1);	1175	upheap ((WT *)periodics, periodiccnt - 1);
984	}	1176	}
985		1177
986	void	1178	void
987	ev_periodic_stop (struct ev_periodic *w)	1179	ev_periodic_stop (EV_P_ struct ev_periodic *w)
988	{	1180	{
989	ev_clear_pending ((W)w);	1181	ev_clear_pending (EV_A_ (W)w);
990	if (!ev_is_active (w))	1182	if (!ev_is_active (w))
991	return;	1183	return;
992		1184
993	if (w->active < periodiccnt--)	1185	if (w->active < periodiccnt--)
994	{	1186	{
995	periodics [w->active - 1] = periodics [periodiccnt];	1187	periodics [w->active - 1] = periodics [periodiccnt];
996	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1188	downheap ((WT *)periodics, periodiccnt, w->active - 1);
997	}	1189	}
998		1190
999	ev_stop ((W)w);	1191	ev_stop (EV_A_ (W)w);
1000	}	1192	}
1001		1193
1002	void	1194	void
1003	ev_signal_start (struct ev_signal *w)	1195	ev_idle_start (EV_P_ struct ev_idle *w)
1004	{	1196	{
1005	if (ev_is_active (w))	1197	if (ev_is_active (w))
1006	return;	1198	return;
1007		1199
		1200	ev_start (EV_A_ (W)w, ++idlecnt);
		1201	array_needsize (idles, idlemax, idlecnt, );
		1202	idles [idlecnt - 1] = w;
		1203	}
		1204
		1205	void
		1206	ev_idle_stop (EV_P_ struct ev_idle *w)
		1207	{
		1208	ev_clear_pending (EV_A_ (W)w);
		1209	if (ev_is_active (w))
		1210	return;
		1211
		1212	idles [w->active - 1] = idles [--idlecnt];
		1213	ev_stop (EV_A_ (W)w);
		1214	}
		1215
		1216	void
		1217	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1218	{
		1219	if (ev_is_active (w))
		1220	return;
		1221
		1222	ev_start (EV_A_ (W)w, ++preparecnt);
		1223	array_needsize (prepares, preparemax, preparecnt, );
		1224	prepares [preparecnt - 1] = w;
		1225	}
		1226
		1227	void
		1228	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1229	{
		1230	ev_clear_pending (EV_A_ (W)w);
		1231	if (ev_is_active (w))
		1232	return;
		1233
		1234	prepares [w->active - 1] = prepares [--preparecnt];
		1235	ev_stop (EV_A_ (W)w);
		1236	}
		1237
		1238	void
		1239	ev_check_start (EV_P_ struct ev_check *w)
		1240	{
		1241	if (ev_is_active (w))
		1242	return;
		1243
		1244	ev_start (EV_A_ (W)w, ++checkcnt);
		1245	array_needsize (checks, checkmax, checkcnt, );
		1246	checks [checkcnt - 1] = w;
		1247	}
		1248
		1249	void
		1250	ev_check_stop (EV_P_ struct ev_check *w)
		1251	{
		1252	ev_clear_pending (EV_A_ (W)w);
		1253	if (ev_is_active (w))
		1254	return;
		1255
		1256	checks [w->active - 1] = checks [--checkcnt];
		1257	ev_stop (EV_A_ (W)w);
		1258	}
		1259
		1260	#ifndef SA_RESTART
		1261	# define SA_RESTART 0
		1262	#endif
		1263
		1264	void
		1265	ev_signal_start (EV_P_ struct ev_signal *w)
		1266	{
		1267	#if EV_MULTIPLICITY
		1268	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1269	#endif
		1270	if (ev_is_active (w))
		1271	return;
		1272
1008	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1273	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1009		1274
1010	ev_start ((W)w, 1);	1275	ev_start (EV_A_ (W)w, 1);
1011	array_needsize (signals, signalmax, w->signum, signals_init);	1276	array_needsize (signals, signalmax, w->signum, signals_init);
1012	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1277	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1013		1278
1014	if (!w->next)	1279	if (!w->next)
1015	{	1280	{
1016	struct sigaction sa;	1281	struct sigaction sa;
1017	sa.sa_handler = sighandler;	1282	sa.sa_handler = sighandler;
1018	sigfillset (&sa.sa_mask);	1283	sigfillset (&sa.sa_mask);
1019	sa.sa_flags = 0;	1284	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1020	sigaction (w->signum, &sa, 0);	1285	sigaction (w->signum, &sa, 0);
1021	}	1286	}
1022	}	1287	}
1023		1288
1024	void	1289	void
1025	ev_signal_stop (struct ev_signal *w)	1290	ev_signal_stop (EV_P_ struct ev_signal *w)
1026	{	1291	{
1027	ev_clear_pending ((W)w);	1292	ev_clear_pending (EV_A_ (W)w);
1028	if (!ev_is_active (w))	1293	if (!ev_is_active (w))
1029	return;	1294	return;
1030		1295
1031	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1296	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1032	ev_stop ((W)w);	1297	ev_stop (EV_A_ (W)w);
1033		1298
1034	if (!signals [w->signum - 1].head)	1299	if (!signals [w->signum - 1].head)
1035	signal (w->signum, SIG_DFL);	1300	signal (w->signum, SIG_DFL);
1036	}	1301	}
1037		1302
1038	void	1303	void
1039	ev_idle_start (struct ev_idle *w)	1304	ev_child_start (EV_P_ struct ev_child *w)
1040	{	1305	{
		1306	#if EV_MULTIPLICITY
		1307	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1308	#endif
1041	if (ev_is_active (w))	1309	if (ev_is_active (w))
1042	return;	1310	return;
1043		1311
1044	ev_start ((W)w, ++idlecnt);	1312	ev_start (EV_A_ (W)w, 1);
1045	array_needsize (idles, idlemax, idlecnt, );	1313	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1046	idles [idlecnt - 1] = w;
1047	}	1314	}
1048		1315
1049	void	1316	void
1050	ev_idle_stop (struct ev_idle *w)	1317	ev_child_stop (EV_P_ struct ev_child *w)
1051	{	1318	{
1052	ev_clear_pending ((W)w);	1319	ev_clear_pending (EV_A_ (W)w);
1053	if (ev_is_active (w))	1320	if (ev_is_active (w))
1054	return;	1321	return;
1055		1322
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);	1323	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	ev_stop ((W)w);	1324	ev_stop (EV_A_ (W)w);
1123	}	1325	}
1124		1326
1125	/*****************************************************************************/	1327	/*****************************************************************************/
1126		1328
1127	struct ev_once	1329	struct ev_once
…		…
1131	void (cb)(int revents, void arg);	1333	void (cb)(int revents, void arg);
1132	void *arg;	1334	void *arg;
1133	};	1335	};
1134		1336
1135	static void	1337	static void
1136	once_cb (struct ev_once *once, int revents)	1338	once_cb (EV_P_ struct ev_once *once, int revents)
1137	{	1339	{
1138	void (cb)(int revents, void arg) = once->cb;	1340	void (cb)(int revents, void arg) = once->cb;
1139	void *arg = once->arg;	1341	void *arg = once->arg;
1140		1342
1141	ev_io_stop (&once->io);	1343	ev_io_stop (EV_A_ &once->io);
1142	ev_timer_stop (&once->to);	1344	ev_timer_stop (EV_A_ &once->to);
1143	free (once);	1345	free (once);
1144		1346
1145	cb (revents, arg);	1347	cb (revents, arg);
1146	}	1348	}
1147		1349
1148	static void	1350	static void
1149	once_cb_io (struct ev_io *w, int revents)	1351	once_cb_io (EV_P_ struct ev_io *w, int revents)
1150	{	1352	{
1151	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1353	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1152	}	1354	}
1153		1355
1154	static void	1356	static void
1155	once_cb_to (struct ev_timer *w, int revents)	1357	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1156	{	1358	{
1157	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1359	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1158	}	1360	}
1159		1361
1160	void	1362	void
1161	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1363	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1162	{	1364	{
1163	struct ev_once *once = malloc (sizeof (struct ev_once));	1365	struct ev_once *once = malloc (sizeof (struct ev_once));
1164		1366
1165	if (!once)	1367	if (!once)
1166	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1368	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1171		1373
1172	ev_watcher_init (&once->io, once_cb_io);	1374	ev_watcher_init (&once->io, once_cb_io);
1173	if (fd >= 0)	1375	if (fd >= 0)
1174	{	1376	{
1175	ev_io_set (&once->io, fd, events);	1377	ev_io_set (&once->io, fd, events);
1176	ev_io_start (&once->io);	1378	ev_io_start (EV_A_ &once->io);
1177	}	1379	}
1178		1380
1179	ev_watcher_init (&once->to, once_cb_to);	1381	ev_watcher_init (&once->to, once_cb_to);
1180	if (timeout >= 0.)	1382	if (timeout >= 0.)
1181	{	1383	{
1182	ev_timer_set (&once->to, timeout, 0.);	1384	ev_timer_set (&once->to, timeout, 0.);
1183	ev_timer_start (&once->to);	1385	ev_timer_start (EV_A_ &once->to);
1184	}	1386	}
1185	}	1387	}
1186	}	1388	}
1187		1389
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

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Comparing libev/ev.c (file contents): Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs. Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.44 by root, Fri Nov 2 20:59:14 2007 UTC vs.
Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC