[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
70		92
71	#ifndef EV_USE_KQUEUE	93	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	94	# define EV_USE_KQUEUE 0
73	#endif	95	#endif
74		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
		103	#endif
		104
75	#ifndef EV_USE_REALTIME	105	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	106	# define EV_USE_REALTIME 1
77	#endif	107	#endif
78		108
79	/**/	109	/**/
…		…
113		143
114	typedef struct ev_watcher *W;	144	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	145	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	146	typedef struct ev_watcher_time *WT;
117		147
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121
122	static int have_monotonic; /* runtime */
123
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		149
128	/*****************************************************************************/	150	/*****************************************************************************/
129		151
130	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
131	ev_time (void)	186	ev_time (void)
132	{	187	{
133	#if EV_USE_REALTIME	188	#if EV_USE_REALTIME
134	struct timespec ts;	189	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	190	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	194	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	195	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	196	#endif
142	}	197	}
143		198
144	static ev_tstamp	199	inline ev_tstamp
145	get_clock (void)	200	get_clock (void)
146	{	201	{
147	#if EV_USE_MONOTONIC	202	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	203	if (expect_true (have_monotonic))
149	{	204	{
…		…
152	return ts.tv_sec + ts.tv_nsec * 1e-9;	207	return ts.tv_sec + ts.tv_nsec * 1e-9;
153	}	208	}
154	#endif	209	#endif
155		210
156	return ev_time ();	211	return ev_time ();
		212	}
		213
		214	ev_tstamp
		215	ev_now (EV_P)
		216	{
		217	return rt_now;
157	}	218	}
158		219
159	#define array_roundsize(base,n) ((n) \| 4 & ~3)	220	#define array_roundsize(base,n) ((n) \| 4 & ~3)
160		221
161	#define array_needsize(base,cur,cnt,init) \	222	#define array_needsize(base,cur,cnt,init) \
…		…
173	cur = newcnt; \	234	cur = newcnt; \
174	}	235	}
175		236
176	/*****************************************************************************/	237	/*****************************************************************************/
177		238
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187
188	static void	239	static void
189	anfds_init (ANFD *base, int count)	240	anfds_init (ANFD *base, int count)
190	{	241	{
191	while (count--)	242	while (count--)
192	{	243	{
…		…
196		247
197	++base;	248	++base;
198	}	249	}
199	}	250	}
200		251
201	typedef struct
202	{
203	W w;
204	int events;
205	} ANPENDING;
206
207	static ANPENDING *pendings [NUMPRI];
208	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
209
210	static void	252	static void
211	event (W w, int events)	253	event (EV_P_ W w, int events)
212	{	254	{
213	if (w->pending)	255	if (w->pending)
214	{	256	{
215	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	257	pendings [ABSPRI (w)][w->pending - 1].events \|= events;
216	return;	258	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	263	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	264	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	265	}
224		266
225	static void	267	static void
226	queue_events (W *events, int eventcnt, int type)	268	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	269	{
228	int i;	270	int i;
229		271
230	for (i = 0; i < eventcnt; ++i)	272	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	273	event (EV_A_ events [i], type);
232	}	274	}
233		275
234	static void	276	static void
235	fd_event (int fd, int events)	277	fd_event (EV_P_ int fd, int events)
236	{	278	{
237	ANFD *anfd = anfds + fd;	279	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	280	struct ev_io *w;
239		281
240	for (w = anfd->head; w; w = w->next)	282	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
241	{	283	{
242	int ev = w->events & events;	284	int ev = w->events & events;
243		285
244	if (ev)	286	if (ev)
245	event ((W)w, ev);	287	event (EV_A_ (W)w, ev);
246	}	288	}
247	}	289	}
248		290
249	/*****************************************************************************/	291	/*****************************************************************************/
250		292
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	293	static void
255	fd_reify (void)	294	fd_reify (EV_P)
256	{	295	{
257	int i;	296	int i;
258		297
259	for (i = 0; i < fdchangecnt; ++i)	298	for (i = 0; i < fdchangecnt; ++i)
260	{	299	{
…		…
262	ANFD *anfd = anfds + fd;	301	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	302	struct ev_io *w;
264		303
265	int events = 0;	304	int events = 0;
266		305
267	for (w = anfd->head; w; w = w->next)	306	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
268	events \|= w->events;	307	events \|= w->events;
269		308
270	anfd->reify = 0;	309	anfd->reify = 0;
271		310
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	311	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	312	anfd->events = events;
276	}
277	}	313	}
278		314
279	fdchangecnt = 0;	315	fdchangecnt = 0;
280	}	316	}
281		317
282	static void	318	static void
283	fd_change (int fd)	319	fd_change (EV_P_ int fd)
284	{	320	{
285	if (anfds [fd].reify \|\| fdchangecnt < 0)	321	if (anfds [fd].reify \|\| fdchangecnt < 0)
286	return;	322	return;
287		323
288	anfds [fd].reify = 1;	324	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	327	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	328	fdchanges [fdchangecnt - 1] = fd;
293	}	329	}
294		330
295	static void	331	static void
296	fd_kill (int fd)	332	fd_kill (EV_P_ int fd)
297	{	333	{
298	struct ev_io *w;	334	struct ev_io *w;
299		335
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	336	while ((w = (struct ev_io *)anfds [fd].head))
302	{	337	{
303	ev_io_stop (w);	338	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR \| EV_READ \| EV_WRITE);	339	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
305	}	340	}
306	}	341	}
307		342
308	/* called on EBADF to verify fds */	343	/* called on EBADF to verify fds */
309	static void	344	static void
310	fd_ebadf (void)	345	fd_ebadf (EV_P)
311	{	346	{
312	int fd;	347	int fd;
313		348
314	for (fd = 0; fd < anfdmax; ++fd)	349	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	350	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	351	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	352	fd_kill (EV_A_ fd);
318	}	353	}
319		354
320	/* called on ENOMEM in select/poll to kill some fds and retry */	355	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	356	static void
322	fd_enomem (void)	357	fd_enomem (EV_P)
323	{	358	{
324	int fd = anfdmax;	359	int fd;
325		360
326	while (fd--)	361	for (fd = anfdmax; fd--; )
327	if (anfds [fd].events)	362	if (anfds [fd].events)
328	{	363	{
329	close (fd);	364	close (fd);
330	fd_kill (fd);	365	fd_kill (EV_A_ fd);
331	return;	366	return;
332	}	367	}
333	}	368	}
334		369
		370	/* susually called after fork if method needs to re-arm all fds from scratch */
		371	static void
		372	fd_rearm_all (EV_P)
		373	{
		374	int fd;
		375
		376	/* this should be highly optimised to not do anything but set a flag */
		377	for (fd = 0; fd < anfdmax; ++fd)
		378	if (anfds [fd].events)
		379	{
		380	anfds [fd].events = 0;
		381	fd_change (EV_A_ fd);
		382	}
		383	}
		384
335	/*****************************************************************************/	385	/*****************************************************************************/
336		386
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	387	static void
344	upheap (WT *timers, int k)	388	upheap (WT *heap, int k)
345	{	389	{
346	WT w = timers [k];	390	WT w = heap [k];
347		391
348	while (k && timers [k >> 1]->at > w->at)	392	while (k && heap [k >> 1]->at > w->at)
349	{	393	{
350	timers [k] = timers [k >> 1];	394	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	395	((W)heap [k])->active = k + 1;
352	k >>= 1;	396	k >>= 1;
353	}	397	}
354		398
355	timers [k] = w;	399	heap [k] = w;
356	timers [k]->active = k + 1;	400	((W)heap [k])->active = k + 1;
357		401
358	}	402	}
359		403
360	static void	404	static void
361	downheap (WT *timers, int N, int k)	405	downheap (WT *heap, int N, int k)
362	{	406	{
363	WT w = timers [k];	407	WT w = heap [k];
364		408
365	while (k < (N >> 1))	409	while (k < (N >> 1))
366	{	410	{
367	int j = k << 1;	411	int j = k << 1;
368		412
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	413	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	414	++j;
371		415
372	if (w->at <= timers [j]->at)	416	if (w->at <= heap [j]->at)
373	break;	417	break;
374		418
375	timers [k] = timers [j];	419	heap [k] = heap [j];
376	timers [k]->active = k + 1;	420	((W)heap [k])->active = k + 1;
377	k = j;	421	k = j;
378	}	422	}
379		423
380	timers [k] = w;	424	heap [k] = w;
381	timers [k]->active = k + 1;	425	((W)heap [k])->active = k + 1;
382	}	426	}
383		427
384	/*****************************************************************************/	428	/*****************************************************************************/
385		429
386	typedef struct	430	typedef struct
387	{	431	{
388	struct ev_signal *head;	432	struct ev_watcher_list *head;
389	sig_atomic_t volatile gotsig;	433	sig_atomic_t volatile gotsig;
390	} ANSIG;	434	} ANSIG;
391		435
392	static ANSIG *signals;	436	static ANSIG *signals;
393	static int signalmax;	437	static int signalmax;
…		…
413	{	457	{
414	signals [signum - 1].gotsig = 1;	458	signals [signum - 1].gotsig = 1;
415		459
416	if (!gotsig)	460	if (!gotsig)
417	{	461	{
		462	int old_errno = errno;
418	gotsig = 1;	463	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	464	write (sigpipe [1], &signum, 1);
		465	errno = old_errno;
420	}	466	}
421	}	467	}
422		468
423	static void	469	static void
424	sigcb (struct ev_io *iow, int revents)	470	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	471	{
426	struct ev_signal *w;	472	struct ev_watcher_list *w;
427	int signum;	473	int signum;
428		474
429	read (sigpipe [0], &revents, 1);	475	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	476	gotsig = 0;
431		477
…		…
433	if (signals [signum].gotsig)	479	if (signals [signum].gotsig)
434	{	480	{
435	signals [signum].gotsig = 0;	481	signals [signum].gotsig = 0;
436		482
437	for (w = signals [signum].head; w; w = w->next)	483	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	484	event (EV_A_ (W)w, EV_SIGNAL);
439	}	485	}
440	}	486	}
441		487
442	static void	488	static void
443	siginit (void)	489	siginit (EV_P)
444	{	490	{
445	#ifndef WIN32	491	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	492	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	493	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		494
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	496	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	497	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	498	#endif
453		499
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	500	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	501	ev_io_start (EV_A_ &sigev);
		502	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	503	}
457		504
458	/*****************************************************************************/	505	/*****************************************************************************/
459		506
460	static struct ev_idle **idles;	507	#ifndef WIN32
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470		508
471	static struct ev_child *childs [PID_HASHSIZE];	509	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;	510	static struct ev_signal childev;
473		511
474	#ifndef WIN32
475
476	#ifndef WCONTINUED	512	#ifndef WCONTINUED
477	# define WCONTINUED 0	513	# define WCONTINUED 0
478	#endif	514	#endif
479		515
480	static void	516	static void
481	childcb (struct ev_signal *sw, int revents)	517	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	518	{
483	struct ev_child *w;	519	struct ev_child *w;
		520
		521	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
		522	if (w->pid == pid \|\| !w->pid)
		523	{
		524	ev_priority (w) = ev_priority (sw); /* need to do it now */
		525	w->rpid = pid;
		526	w->rstatus = status;
		527	event (EV_A_ (W)w, EV_CHILD);
		528	}
		529	}
		530
		531	static void
		532	childcb (EV_P_ struct ev_signal *sw, int revents)
		533	{
484	int pid, status;	534	int pid, status;
485		535
486	while ((pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)) != -1)	536	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	537	{
488	if (w->pid == pid \|\| !w->pid)	538	/* make sure we are called again until all childs have been reaped */
489	{	539	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->status = status;	540
491	event ((W)w, EV_CHILD);	541	child_reap (EV_A_ sw, pid, pid, status);
492	}	542	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		543	}
493	}	544	}
494		545
495	#endif	546	#endif
496		547
497	/*****************************************************************************/	548	/*****************************************************************************/
…		…
519	ev_version_minor (void)	570	ev_version_minor (void)
520	{	571	{
521	return EV_VERSION_MINOR;	572	return EV_VERSION_MINOR;
522	}	573	}
523		574
524	/* return true if we are running with elevated privileges and ignore env variables */	575	/* return true if we are running with elevated privileges and should ignore env variables */
525	static int	576	static int
526	enable_secure ()	577	enable_secure (void)
527	{	578	{
		579	#ifdef WIN32
		580	return 0;
		581	#else
528	return getuid () != geteuid ()	582	return getuid () != geteuid ()
529	\|\| getgid () != getegid ();	583	\|\| getgid () != getegid ();
		584	#endif
530	}	585	}
531		586
532	int ev_init (int methods)	587	int
		588	ev_method (EV_P)
533	{	589	{
		590	return method;
		591	}
		592
		593	static void
		594	loop_init (EV_P_ int methods)
		595	{
534	if (!ev_method)	596	if (!method)
535	{	597	{
536	#if EV_USE_MONOTONIC	598	#if EV_USE_MONOTONIC
537	{	599	{
538	struct timespec ts;	600	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	601	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	602	have_monotonic = 1;
541	}	603	}
542	#endif	604	#endif
543		605
544	ev_now = ev_time ();	606	rt_now = ev_time ();
545	now = get_clock ();	607	mn_now = get_clock ();
546	now_floor = now;	608	now_floor = mn_now;
547	diff = ev_now - now;	609	rtmn_diff = rt_now - mn_now;
548
549	if (pipe (sigpipe))
550	return 0;
551		610
552	if (methods == EVMETHOD_AUTO)	611	if (methods == EVMETHOD_AUTO)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))	612	if (!enable_secure () && getenv ("LIBEV_METHODS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	613	methods = atoi (getenv ("LIBEV_METHODS"));
555	else	614	else
556	methods = EVMETHOD_ANY;	615	methods = EVMETHOD_ANY;
557		616
558	ev_method = 0;	617	method = 0;
		618	#if EV_USE_WIN32
		619	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		620	#endif
559	#if EV_USE_KQUEUE	621	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
561	#endif	623	#endif
562	#if EV_USE_EPOLL	624	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
564	#endif	626	#endif
565	#if EV_USE_POLL	627	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
567	#endif	629	#endif
568	#if EV_USE_SELECT	630	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
570	#endif	632	#endif
		633	}
		634	}
571		635
		636	void
		637	loop_destroy (EV_P)
		638	{
		639	#if EV_USE_WIN32
		640	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		641	#endif
		642	#if EV_USE_KQUEUE
		643	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		644	#endif
		645	#if EV_USE_EPOLL
		646	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		647	#endif
		648	#if EV_USE_POLL
		649	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		650	#endif
		651	#if EV_USE_SELECT
		652	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		653	#endif
		654
		655	method = 0;
		656	/TODO/
		657	}
		658
		659	void
		660	loop_fork (EV_P)
		661	{
		662	/TODO/
		663	#if EV_USE_EPOLL
		664	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		665	#endif
		666	#if EV_USE_KQUEUE
		667	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		668	#endif
		669	}
		670
		671	#if EV_MULTIPLICITY
		672	struct ev_loop *
		673	ev_loop_new (int methods)
		674	{
		675	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
		676
		677	loop_init (EV_A_ methods);
		678
		679	if (ev_method (EV_A))
		680	return loop;
		681
		682	return 0;
		683	}
		684
		685	void
		686	ev_loop_destroy (EV_P)
		687	{
		688	loop_destroy (EV_A);
		689	free (loop);
		690	}
		691
		692	void
		693	ev_loop_fork (EV_P)
		694	{
		695	loop_fork (EV_A);
		696	}
		697
		698	#endif
		699
		700	#if EV_MULTIPLICITY
		701	struct ev_loop default_loop_struct;
		702	static struct ev_loop *default_loop;
		703
		704	struct ev_loop *
		705	#else
		706	static int default_loop;
		707
		708	int
		709	#endif
		710	ev_default_loop (int methods)
		711	{
		712	if (sigpipe [0] == sigpipe [1])
		713	if (pipe (sigpipe))
		714	return 0;
		715
		716	if (!default_loop)
		717	{
		718	#if EV_MULTIPLICITY
		719	struct ev_loop *loop = default_loop = &default_loop_struct;
		720	#else
		721	default_loop = 1;
		722	#endif
		723
		724	loop_init (EV_A_ methods);
		725
572	if (ev_method)	726	if (ev_method (EV_A))
573	{	727	{
574	ev_watcher_init (&sigev, sigcb);	728	ev_watcher_init (&sigev, sigcb);
		729	ev_set_priority (&sigev, EV_MAXPRI);
575	siginit ();	730	siginit (EV_A);
576		731
577	#ifndef WIN32	732	#ifndef WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	733	ev_signal_init (&childev, childcb, SIGCHLD);
		734	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	735	ev_signal_start (EV_A_ &childev);
		736	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	737	#endif
581	}	738	}
		739	else
		740	default_loop = 0;
582	}	741	}
583		742
584	return ev_method;	743	return default_loop;
585	}	744	}
586		745
587	/*****************************************************************************/
588
589	void	746	void
590	ev_fork_prepare (void)	747	ev_default_destroy (void)
591	{	748	{
592	/* nop */	749	#if EV_MULTIPLICITY
593	}	750	struct ev_loop *loop = default_loop;
594
595	void
596	ev_fork_parent (void)
597	{
598	/* nop */
599	}
600
601	void
602	ev_fork_child (void)
603	{
604	#if EV_USE_EPOLL
605	if (ev_method == EVMETHOD_EPOLL)
606	epoll_postfork_child ();
607	#endif	751	#endif
608		752
		753	ev_ref (EV_A); /* child watcher */
		754	ev_signal_stop (EV_A_ &childev);
		755
		756	ev_ref (EV_A); /* signal watcher */
609	ev_io_stop (&sigev);	757	ev_io_stop (EV_A_ &sigev);
		758
		759	close (sigpipe [0]); sigpipe [0] = 0;
		760	close (sigpipe [1]); sigpipe [1] = 0;
		761
		762	loop_destroy (EV_A);
		763	}
		764
		765	void
		766	ev_default_fork (void)
		767	{
		768	#if EV_MULTIPLICITY
		769	struct ev_loop *loop = default_loop;
		770	#endif
		771
		772	loop_fork (EV_A);
		773
		774	ev_io_stop (EV_A_ &sigev);
610	close (sigpipe [0]);	775	close (sigpipe [0]);
611	close (sigpipe [1]);	776	close (sigpipe [1]);
612	pipe (sigpipe);	777	pipe (sigpipe);
		778
		779	ev_ref (EV_A); /* signal watcher */
613	siginit ();	780	siginit (EV_A);
614	}	781	}
615		782
616	/*****************************************************************************/	783	/*****************************************************************************/
617		784
618	static void	785	static void
619	call_pending (void)	786	call_pending (EV_P)
620	{	787	{
621	int pri;	788	int pri;
622		789
623	for (pri = NUMPRI; pri--; )	790	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	791	while (pendingcnt [pri])
…		…
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	793	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		794
628	if (p->w)	795	if (p->w)
629	{	796	{
630	p->w->pending = 0;	797	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	798
		799	((void (*)(EV_P_ W, int))&p->w->cb) (EV_A_ p->w, p->events);
632	}	800	}
633	}	801	}
634	}	802	}
635		803
636	static void	804	static void
637	timers_reify (void)	805	timers_reify (EV_P)
638	{	806	{
639	while (timercnt && timers [0]->at <= now)	807	while (timercnt && ((WT)timers [0])->at <= mn_now)
640	{	808	{
641	struct ev_timer *w = timers [0];	809	struct ev_timer *w = timers [0];
		810
		811	assert (("inactive timer on timer heap detected", ev_is_active (w)));
642		812
643	/* first reschedule or stop timer */	813	/* first reschedule or stop timer */
644	if (w->repeat)	814	if (w->repeat)
645	{	815	{
646	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	816	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
647	w->at = now + w->repeat;	817	((WT)w)->at = mn_now + w->repeat;
648	downheap ((WT *)timers, timercnt, 0);	818	downheap ((WT *)timers, timercnt, 0);
649	}	819	}
650	else	820	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	821	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		822
653	event ((W)w, EV_TIMEOUT);	823	event (EV_A_ (W)w, EV_TIMEOUT);
654	}	824	}
655	}	825	}
656		826
657	static void	827	static void
658	periodics_reify (void)	828	periodics_reify (EV_P)
659	{	829	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	830	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
661	{	831	{
662	struct ev_periodic *w = periodics [0];	832	struct ev_periodic *w = periodics [0];
		833
		834	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
663		835
664	/* first reschedule or stop timer */	836	/* first reschedule or stop timer */
665	if (w->interval)	837	if (w->interval)
666	{	838	{
667	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	839	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
668	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	840	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
669	downheap ((WT *)periodics, periodiccnt, 0);	841	downheap ((WT *)periodics, periodiccnt, 0);
670	}	842	}
671	else	843	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	844	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		845
674	event ((W)w, EV_PERIODIC);	846	event (EV_A_ (W)w, EV_PERIODIC);
675	}	847	}
676	}	848	}
677		849
678	static void	850	static void
679	periodics_reschedule (ev_tstamp diff)	851	periodics_reschedule (EV_P)
680	{	852	{
681	int i;	853	int i;
682		854
683	/* adjust periodics after time jump */	855	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	856	for (i = 0; i < periodiccnt; ++i)
685	{	857	{
686	struct ev_periodic *w = periodics [i];	858	struct ev_periodic *w = periodics [i];
687		859
688	if (w->interval)	860	if (w->interval)
689	{	861	{
690	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	862	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
691		863
692	if (fabs (diff) >= 1e-4)	864	if (fabs (diff) >= 1e-4)
693	{	865	{
694	ev_periodic_stop (w);	866	ev_periodic_stop (EV_A_ w);
695	ev_periodic_start (w);	867	ev_periodic_start (EV_A_ w);
696		868
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */	869	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}	870	}
699	}	871	}
700	}	872	}
701	}	873	}
702		874
703	static int	875	inline int
704	time_update_monotonic (void)	876	time_update_monotonic (EV_P)
705	{	877	{
706	now = get_clock ();	878	mn_now = get_clock ();
707		879
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	880	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	881	{
710	ev_now = now + diff;	882	rt_now = rtmn_diff + mn_now;
711	return 0;	883	return 0;
712	}	884	}
713	else	885	else
714	{	886	{
715	now_floor = now;	887	now_floor = mn_now;
716	ev_now = ev_time ();	888	rt_now = ev_time ();
717	return 1;	889	return 1;
718	}	890	}
719	}	891	}
720		892
721	static void	893	static void
722	time_update (void)	894	time_update (EV_P)
723	{	895	{
724	int i;	896	int i;
725		897
726	#if EV_USE_MONOTONIC	898	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	899	if (expect_true (have_monotonic))
728	{	900	{
729	if (time_update_monotonic ())	901	if (time_update_monotonic (EV_A))
730	{	902	{
731	ev_tstamp odiff = diff;	903	ev_tstamp odiff = rtmn_diff;
732		904
733	for (i = 4; --i; ) /* loop a few times, before making important decisions */	905	for (i = 4; --i; ) /* loop a few times, before making important decisions */
734	{	906	{
735	diff = ev_now - now;	907	rtmn_diff = rt_now - mn_now;
736		908
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	909	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	910	return; /* all is well */
739		911
740	ev_now = ev_time ();	912	rt_now = ev_time ();
741	now = get_clock ();	913	mn_now = get_clock ();
742	now_floor = now;	914	now_floor = mn_now;
743	}	915	}
744		916
745	periodics_reschedule (diff - odiff);	917	periodics_reschedule (EV_A);
746	/* no timer adjustment, as the monotonic clock doesn't jump */	918	/* no timer adjustment, as the monotonic clock doesn't jump */
		919	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
747	}	920	}
748	}	921	}
749	else	922	else
750	#endif	923	#endif
751	{	924	{
752	ev_now = ev_time ();	925	rt_now = ev_time ();
753		926
754	if (expect_false (now > ev_now \|\| now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	927	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
755	{	928	{
756	periodics_reschedule (ev_now - now);	929	periodics_reschedule (EV_A);
757		930
758	/* adjust timers. this is easy, as the offset is the same for all */	931	/* adjust timers. this is easy, as the offset is the same for all */
759	for (i = 0; i < timercnt; ++i)	932	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	933	((WT)timers [i])->at += rt_now - mn_now;
761	}	934	}
762		935
763	now = ev_now;	936	mn_now = rt_now;
764	}	937	}
765	}	938	}
766		939
767	int ev_loop_done;	940	void
		941	ev_ref (EV_P)
		942	{
		943	++activecnt;
		944	}
768		945
		946	void
		947	ev_unref (EV_P)
		948	{
		949	--activecnt;
		950	}
		951
		952	static int loop_done;
		953
		954	void
769	void ev_loop (int flags)	955	ev_loop (EV_P_ int flags)
770	{	956	{
771	double block;	957	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	958	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
773		959
774	do	960	do
775	{	961	{
776	/* queue check watchers (and execute them) */	962	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	963	if (expect_false (preparecnt))
778	{	964	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	965	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	966	call_pending (EV_A);
781	}	967	}
782		968
783	/* update fd-related kernel structures */	969	/* update fd-related kernel structures */
784	fd_reify ();	970	fd_reify (EV_A);
785		971
786	/* calculate blocking time */	972	/* calculate blocking time */
787		973
788	/* we only need this for !monotonic clockor timers, but as we basically	974	/* we only need this for !monotonic clockor timers, but as we basically
789	always have timers, we just calculate it always */	975	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	976	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	977	if (expect_true (have_monotonic))
792	time_update_monotonic ();	978	time_update_monotonic (EV_A);
793	else	979	else
794	#endif	980	#endif
795	{	981	{
796	ev_now = ev_time ();	982	rt_now = ev_time ();
797	now = ev_now;	983	mn_now = rt_now;
798	}	984	}
799		985
800	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	986	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
801	block = 0.;	987	block = 0.;
802	else	988	else
803	{	989	{
804	block = MAX_BLOCKTIME;	990	block = MAX_BLOCKTIME;
805		991
806	if (timercnt)	992	if (timercnt)
807	{	993	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	994	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
809	if (block > to) block = to;	995	if (block > to) block = to;
810	}	996	}
811		997
812	if (periodiccnt)	998	if (periodiccnt)
813	{	999	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1000	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
815	if (block > to) block = to;	1001	if (block > to) block = to;
816	}	1002	}
817		1003
818	if (block < 0.) block = 0.;	1004	if (block < 0.) block = 0.;
819	}	1005	}
820		1006
821	method_poll (block);	1007	method_poll (EV_A_ block);
822		1008
823	/* update ev_now, do magic */	1009	/* update rt_now, do magic */
824	time_update ();	1010	time_update (EV_A);
825		1011
826	/* queue pending timers and reschedule them */	1012	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	1013	timers_reify (EV_A); /* relative timers called last */
828	periodics_reify (); /* absolute timers called first */	1014	periodics_reify (EV_A); /* absolute timers called first */
829		1015
830	/* queue idle watchers unless io or timers are pending */	1016	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	1017	if (!pendingcnt)
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	1018	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		1019
834	/* queue check watchers, to be executed first */	1020	/* queue check watchers, to be executed first */
835	if (checkcnt)	1021	if (checkcnt)
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	1022	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		1023
838	call_pending ();	1024	call_pending (EV_A);
839	}	1025	}
840	while (!ev_loop_done);	1026	while (activecnt && !loop_done);
841		1027
842	if (ev_loop_done != 2)	1028	if (loop_done != 2)
843	ev_loop_done = 0;	1029	loop_done = 0;
		1030	}
		1031
		1032	void
		1033	ev_unloop (EV_P_ int how)
		1034	{
		1035	loop_done = how;
844	}	1036	}
845		1037
846	/*****************************************************************************/	1038	/*****************************************************************************/
847		1039
848	static void	1040	inline void
849	wlist_add (WL *head, WL elem)	1041	wlist_add (WL *head, WL elem)
850	{	1042	{
851	elem->next = *head;	1043	elem->next = *head;
852	*head = elem;	1044	*head = elem;
853	}	1045	}
854		1046
855	static void	1047	inline void
856	wlist_del (WL *head, WL elem)	1048	wlist_del (WL *head, WL elem)
857	{	1049	{
858	while (*head)	1050	while (*head)
859	{	1051	{
860	if (*head == elem)	1052	if (*head == elem)
…		…
865		1057
866	head = &(*head)->next;	1058	head = &(*head)->next;
867	}	1059	}
868	}	1060	}
869		1061
870	static void	1062	inline void
871	ev_clear_pending (W w)	1063	ev_clear_pending (EV_P_ W w)
872	{	1064	{
873	if (w->pending)	1065	if (w->pending)
874	{	1066	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1067	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1068	w->pending = 0;
877	}	1069	}
878	}	1070	}
879		1071
880	static void	1072	inline void
881	ev_start (W w, int active)	1073	ev_start (EV_P_ W w, int active)
882	{	1074	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1075	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1076	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1077
886	w->active = active;	1078	w->active = active;
		1079	ev_ref (EV_A);
887	}	1080	}
888		1081
889	static void	1082	inline void
890	ev_stop (W w)	1083	ev_stop (EV_P_ W w)
891	{	1084	{
		1085	ev_unref (EV_A);
892	w->active = 0;	1086	w->active = 0;
893	}	1087	}
894		1088
895	/*****************************************************************************/	1089	/*****************************************************************************/
896		1090
897	void	1091	void
898	ev_io_start (struct ev_io *w)	1092	ev_io_start (EV_P_ struct ev_io *w)
899	{	1093	{
900	int fd = w->fd;	1094	int fd = w->fd;
901		1095
902	if (ev_is_active (w))	1096	if (ev_is_active (w))
903	return;	1097	return;
904		1098
905	assert (("ev_io_start called with negative fd", fd >= 0));	1099	assert (("ev_io_start called with negative fd", fd >= 0));
906		1100
907	ev_start ((W)w, 1);	1101	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1102	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1103	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1104
911	fd_change (fd);	1105	fd_change (EV_A_ fd);
912	}	1106	}
913		1107
914	void	1108	void
915	ev_io_stop (struct ev_io *w)	1109	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1110	{
917	ev_clear_pending ((W)w);	1111	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1112	if (!ev_is_active (w))
919	return;	1113	return;
920		1114
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1115	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1116	ev_stop (EV_A_ (W)w);
923		1117
924	fd_change (w->fd);	1118	fd_change (EV_A_ w->fd);
925	}	1119	}
926		1120
927	void	1121	void
928	ev_timer_start (struct ev_timer *w)	1122	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1123	{
930	if (ev_is_active (w))	1124	if (ev_is_active (w))
931	return;	1125	return;
932		1126
933	w->at += now;	1127	((WT)w)->at += mn_now;
934		1128
935	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1129	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
936		1130
937	ev_start ((W)w, ++timercnt);	1131	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1132	array_needsize (timers, timermax, timercnt, );
939	timers [timercnt - 1] = w;	1133	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1134	upheap ((WT *)timers, timercnt - 1);
941	}
942		1135
		1136	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1137	}
		1138
943	void	1139	void
944	ev_timer_stop (struct ev_timer *w)	1140	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1141	{
946	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
948	return;	1144	return;
949		1145
		1146	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1147
950	if (w->active < timercnt--)	1148	if (((W)w)->active < timercnt--)
951	{	1149	{
952	timers [w->active - 1] = timers [timercnt];	1150	timers [((W)w)->active - 1] = timers [timercnt];
953	downheap ((WT *)timers, timercnt, w->active - 1);	1151	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
954	}	1152	}
955		1153
956	w->at = w->repeat;	1154	((WT)w)->at = w->repeat;
957		1155
958	ev_stop ((W)w);	1156	ev_stop (EV_A_ (W)w);
959	}	1157	}
960		1158
961	void	1159	void
962	ev_timer_again (struct ev_timer *w)	1160	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1161	{
964	if (ev_is_active (w))	1162	if (ev_is_active (w))
965	{	1163	{
966	if (w->repeat)	1164	if (w->repeat)
967	{	1165	{
968	w->at = now + w->repeat;	1166	((WT)w)->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1167	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
970	}	1168	}
971	else	1169	else
972	ev_timer_stop (w);	1170	ev_timer_stop (EV_A_ w);
973	}	1171	}
974	else if (w->repeat)	1172	else if (w->repeat)
975	ev_timer_start (w);	1173	ev_timer_start (EV_A_ w);
976	}	1174	}
977		1175
978	void	1176	void
979	ev_periodic_start (struct ev_periodic *w)	1177	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1178	{
981	if (ev_is_active (w))	1179	if (ev_is_active (w))
982	return;	1180	return;
983		1181
984	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1182	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
985		1183
986	/* this formula differs from the one in periodic_reify because we do not always round up */	1184	/* this formula differs from the one in periodic_reify because we do not always round up */
987	if (w->interval)	1185	if (w->interval)
988	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1186	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
989		1187
990	ev_start ((W)w, ++periodiccnt);	1188	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1189	array_needsize (periodics, periodicmax, periodiccnt, );
992	periodics [periodiccnt - 1] = w;	1190	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1191	upheap ((WT *)periodics, periodiccnt - 1);
994	}
995		1192
		1193	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1194	}
		1195
996	void	1196	void
997	ev_periodic_stop (struct ev_periodic *w)	1197	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1198	{
999	ev_clear_pending ((W)w);	1199	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1200	if (!ev_is_active (w))
1001	return;	1201	return;
1002		1202
		1203	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1204
1003	if (w->active < periodiccnt--)	1205	if (((W)w)->active < periodiccnt--)
1004	{	1206	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1207	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1208	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1007	}	1209	}
1008		1210
1009	ev_stop ((W)w);	1211	ev_stop (EV_A_ (W)w);
1010	}	1212	}
1011		1213
1012	void	1214	void
1013	ev_signal_start (struct ev_signal *w)	1215	ev_idle_start (EV_P_ struct ev_idle *w)
1014	{	1216	{
1015	if (ev_is_active (w))	1217	if (ev_is_active (w))
1016	return;	1218	return;
1017		1219
		1220	ev_start (EV_A_ (W)w, ++idlecnt);
		1221	array_needsize (idles, idlemax, idlecnt, );
		1222	idles [idlecnt - 1] = w;
		1223	}
		1224
		1225	void
		1226	ev_idle_stop (EV_P_ struct ev_idle *w)
		1227	{
		1228	ev_clear_pending (EV_A_ (W)w);
		1229	if (ev_is_active (w))
		1230	return;
		1231
		1232	idles [((W)w)->active - 1] = idles [--idlecnt];
		1233	ev_stop (EV_A_ (W)w);
		1234	}
		1235
		1236	void
		1237	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1238	{
		1239	if (ev_is_active (w))
		1240	return;
		1241
		1242	ev_start (EV_A_ (W)w, ++preparecnt);
		1243	array_needsize (prepares, preparemax, preparecnt, );
		1244	prepares [preparecnt - 1] = w;
		1245	}
		1246
		1247	void
		1248	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1249	{
		1250	ev_clear_pending (EV_A_ (W)w);
		1251	if (ev_is_active (w))
		1252	return;
		1253
		1254	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1255	ev_stop (EV_A_ (W)w);
		1256	}
		1257
		1258	void
		1259	ev_check_start (EV_P_ struct ev_check *w)
		1260	{
		1261	if (ev_is_active (w))
		1262	return;
		1263
		1264	ev_start (EV_A_ (W)w, ++checkcnt);
		1265	array_needsize (checks, checkmax, checkcnt, );
		1266	checks [checkcnt - 1] = w;
		1267	}
		1268
		1269	void
		1270	ev_check_stop (EV_P_ struct ev_check *w)
		1271	{
		1272	ev_clear_pending (EV_A_ (W)w);
		1273	if (ev_is_active (w))
		1274	return;
		1275
		1276	checks [((W)w)->active - 1] = checks [--checkcnt];
		1277	ev_stop (EV_A_ (W)w);
		1278	}
		1279
		1280	#ifndef SA_RESTART
		1281	# define SA_RESTART 0
		1282	#endif
		1283
		1284	void
		1285	ev_signal_start (EV_P_ struct ev_signal *w)
		1286	{
		1287	#if EV_MULTIPLICITY
		1288	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1289	#endif
		1290	if (ev_is_active (w))
		1291	return;
		1292
1018	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1293	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1019		1294
1020	ev_start ((W)w, 1);	1295	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1296	array_needsize (signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1297	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1298
1024	if (!w->next)	1299	if (!((WL)w)->next)
1025	{	1300	{
1026	struct sigaction sa;	1301	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1302	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1303	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1304	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1305	sigaction (w->signum, &sa, 0);
1031	}	1306	}
1032	}	1307	}
1033		1308
1034	void	1309	void
1035	ev_signal_stop (struct ev_signal *w)	1310	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1311	{
1037	ev_clear_pending ((W)w);	1312	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1313	if (!ev_is_active (w))
1039	return;	1314	return;
1040		1315
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1316	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1317	ev_stop (EV_A_ (W)w);
1043		1318
1044	if (!signals [w->signum - 1].head)	1319	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1320	signal (w->signum, SIG_DFL);
1046	}	1321	}
1047		1322
1048	void	1323	void
1049	ev_idle_start (struct ev_idle *w)	1324	ev_child_start (EV_P_ struct ev_child *w)
1050	{	1325	{
		1326	#if EV_MULTIPLICITY
		1327	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1328	#endif
1051	if (ev_is_active (w))	1329	if (ev_is_active (w))
1052	return;	1330	return;
1053		1331
1054	ev_start ((W)w, ++idlecnt);	1332	ev_start (EV_A_ (W)w, 1);
1055	array_needsize (idles, idlemax, idlecnt, );	1333	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1056	idles [idlecnt - 1] = w;
1057	}	1334	}
1058		1335
1059	void	1336	void
1060	ev_idle_stop (struct ev_idle *w)	1337	ev_child_stop (EV_P_ struct ev_child *w)
1061	{	1338	{
1062	ev_clear_pending ((W)w);	1339	ev_clear_pending (EV_A_ (W)w);
1063	if (ev_is_active (w))	1340	if (ev_is_active (w))
1064	return;	1341	return;
1065		1342
1066	idles [w->active - 1] = idles [--idlecnt];
1067	ev_stop ((W)w);
1068	}
1069
1070	void
1071	ev_prepare_start (struct ev_prepare *w)
1072	{
1073	if (ev_is_active (w))
1074	return;
1075
1076	ev_start ((W)w, ++preparecnt);
1077	array_needsize (prepares, preparemax, preparecnt, );
1078	prepares [preparecnt - 1] = w;
1079	}
1080
1081	void
1082	ev_prepare_stop (struct ev_prepare *w)
1083	{
1084	ev_clear_pending ((W)w);
1085	if (ev_is_active (w))
1086	return;
1087
1088	prepares [w->active - 1] = prepares [--preparecnt];
1089	ev_stop ((W)w);
1090	}
1091
1092	void
1093	ev_check_start (struct ev_check *w)
1094	{
1095	if (ev_is_active (w))
1096	return;
1097
1098	ev_start ((W)w, ++checkcnt);
1099	array_needsize (checks, checkmax, checkcnt, );
1100	checks [checkcnt - 1] = w;
1101	}
1102
1103	void
1104	ev_check_stop (struct ev_check *w)
1105	{
1106	ev_clear_pending ((W)w);
1107	if (ev_is_active (w))
1108	return;
1109
1110	checks [w->active - 1] = checks [--checkcnt];
1111	ev_stop ((W)w);
1112	}
1113
1114	void
1115	ev_child_start (struct ev_child *w)
1116	{
1117	if (ev_is_active (w))
1118	return;
1119
1120	ev_start ((W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}
1123
1124	void
1125	ev_child_stop (struct ev_child *w)
1126	{
1127	ev_clear_pending ((W)w);
1128	if (ev_is_active (w))
1129	return;
1130
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1343	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1344	ev_stop (EV_A_ (W)w);
1133	}	1345	}
1134		1346
1135	/*****************************************************************************/	1347	/*****************************************************************************/
1136		1348
1137	struct ev_once	1349	struct ev_once
…		…
1141	void (cb)(int revents, void arg);	1353	void (cb)(int revents, void arg);
1142	void *arg;	1354	void *arg;
1143	};	1355	};
1144		1356
1145	static void	1357	static void
1146	once_cb (struct ev_once *once, int revents)	1358	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1359	{
1148	void (cb)(int revents, void arg) = once->cb;	1360	void (cb)(int revents, void arg) = once->cb;
1149	void *arg = once->arg;	1361	void *arg = once->arg;
1150		1362
1151	ev_io_stop (&once->io);	1363	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1364	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1365	free (once);
1154		1366
1155	cb (revents, arg);	1367	cb (revents, arg);
1156	}	1368	}
1157		1369
1158	static void	1370	static void
1159	once_cb_io (struct ev_io *w, int revents)	1371	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1372	{
1161	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);	1373	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, io)), revents);
1162	}	1374	}
1163		1375
1164	static void	1376	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1377	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1378	{
1167	once_cb ((struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);	1379	once_cb (EV_A_ (struct ev_once )(((char )w) - offsetof (struct ev_once, to)), revents);
1168	}	1380	}
1169		1381
1170	void	1382	void
1171	ev_once (int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1383	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1172	{	1384	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1385	struct ev_once *once = malloc (sizeof (struct ev_once));
1174		1386
1175	if (!once)	1387	if (!once)
1176	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1388	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
…		…
1181		1393
1182	ev_watcher_init (&once->io, once_cb_io);	1394	ev_watcher_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1395	if (fd >= 0)
1184	{	1396	{
1185	ev_io_set (&once->io, fd, events);	1397	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1398	ev_io_start (EV_A_ &once->io);
1187	}	1399	}
1188		1400
1189	ev_watcher_init (&once->to, once_cb_to);	1401	ev_watcher_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1402	if (timeout >= 0.)
1191	{	1403	{
1192	ev_timer_set (&once->to, timeout, 0.);	1404	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1405	ev_timer_start (EV_A_ &once->to);
1194	}	1406	}
1195	}	1407	}
1196	}	1408	}
1197		1409
1198	/*****************************************************************************/
1199
1200	#if 0
1201
1202	struct ev_io wio;
1203
1204	static void
1205	sin_cb (struct ev_io *w, int revents)
1206	{
1207	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1208	}
1209
1210	static void
1211	ocb (struct ev_timer *w, int revents)
1212	{
1213	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1214	ev_timer_stop (w);
1215	ev_timer_start (w);
1216	}
1217
1218	static void
1219	scb (struct ev_signal *w, int revents)
1220	{
1221	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1222	ev_io_stop (&wio);
1223	ev_io_start (&wio);
1224	}
1225
1226	static void
1227	gcb (struct ev_signal *w, int revents)
1228	{
1229	fprintf (stderr, "generic %x\n", revents);
1230
1231	}
1232
1233	int main (void)
1234	{
1235	ev_init (0);
1236
1237	ev_io_init (&wio, sin_cb, 0, EV_READ);
1238	ev_io_start (&wio);
1239
1240	struct ev_timer t[10000];
1241
1242	#if 0
1243	int i;
1244	for (i = 0; i < 10000; ++i)
1245	{
1246	struct ev_timer *w = t + i;
1247	ev_watcher_init (w, ocb, i);
1248	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1249	ev_timer_start (w);
1250	if (drand48 () < 0.5)
1251	ev_timer_stop (w);
1252	}
1253	#endif
1254
1255	struct ev_timer t1;
1256	ev_timer_init (&t1, ocb, 5, 10);
1257	ev_timer_start (&t1);
1258
1259	struct ev_signal sig;
1260	ev_signal_init (&sig, scb, SIGQUIT);
1261	ev_signal_start (&sig);
1262
1263	struct ev_check cw;
1264	ev_check_init (&cw, gcb);
1265	ev_check_start (&cw);
1266
1267	struct ev_idle iw;
1268	ev_idle_init (&iw, gcb);
1269	ev_idle_start (&iw);
1270
1271	ev_loop (0);
1272
1273	return 0;
1274	}
1275
1276	#endif
1277
1278
1279
1280

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Comparing libev/ev.c (file contents): Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs. Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.64 by root, Sun Nov 4 23:14:11 2007 UTC