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Comparing libev/ev.c (file contents):
Revision 1.50 by root, Sat Nov 3 19:41:55 2007 UTC vs.
Revision 1.68 by root, Mon Nov 5 20:19:00 2007 UTC

…		…
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	#ifndef EV_STANDALONE	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		149
122	static int have_monotonic; /* runtime */	150	#if WIN32
123		151	/* note: the comment below could not be substantiated, but what would I care */
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	152	/* MSDN says this is required to handle SIGFPE */
125	static void (*method_modify)(int fd, int oev, int nev);	153	volatile double SIGFPE_REQ = 0.0f;
126	static void (*method_poll)(ev_tstamp timeout);	154	#endif
127		155
128	/*****************************************************************************/	156	/*****************************************************************************/
129		157
130	ev_tstamp	158	typedef struct
		159	{
		160	WL head;
		161	unsigned char events;
		162	unsigned char reify;
		163	} ANFD;
		164
		165	typedef struct
		166	{
		167	W w;
		168	int events;
		169	} ANPENDING;
		170
		171	#if EV_MULTIPLICITY
		172
		173	struct ev_loop
		174	{
		175	# define VAR(name,decl) decl;
		176	# include "ev_vars.h"
		177	};
		178	# undef VAR
		179	# include "ev_wrap.h"
		180
		181	#else
		182
		183	# define VAR(name,decl) static decl;
		184	# include "ev_vars.h"
		185	# undef VAR
		186
		187	#endif
		188
		189	/*****************************************************************************/
		190
		191	inline ev_tstamp
131	ev_time (void)	192	ev_time (void)
132	{	193	{
133	#if EV_USE_REALTIME	194	#if EV_USE_REALTIME
134	struct timespec ts;	195	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	196	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	200	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	201	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	202	#endif
142	}	203	}
143		204
144	static ev_tstamp	205	inline ev_tstamp
145	get_clock (void)	206	get_clock (void)
146	{	207	{
147	#if EV_USE_MONOTONIC	208	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	209	if (expect_true (have_monotonic))
149	{	210	{
…		…
152	return ts.tv_sec + ts.tv_nsec * 1e-9;	213	return ts.tv_sec + ts.tv_nsec * 1e-9;
153	}	214	}
154	#endif	215	#endif
155		216
156	return ev_time ();	217	return ev_time ();
		218	}
		219
		220	ev_tstamp
		221	ev_now (EV_P)
		222	{
		223	return rt_now;
157	}	224	}
158		225
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	226	#define array_roundsize(base,n) ((n) | 4 & ~3)
160		227
161	#define array_needsize(base,cur,cnt,init) \	228	#define array_needsize(base,cur,cnt,init) \
…		…
171	base = realloc (base, sizeof (*base) * (newcnt)); \	238	base = realloc (base, sizeof (*base) * (newcnt)); \
172	init (base + cur, newcnt - cur); \	239	init (base + cur, newcnt - cur); \
173	cur = newcnt; \	240	cur = newcnt; \
174	}	241	}
175		242
		243	#define array_slim(stem) \
		244	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		245	{ \
		246	stem ## max = array_roundsize (stem ## cnt >> 1); \
		247	base = realloc (base, sizeof (*base) * (stem ## max)); \
		248	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		249	}
		250
		251	#define array_free(stem, idx) \
		252	free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
		253
176	/*****************************************************************************/	254	/*****************************************************************************/
177
178	typedef struct
179	{
180	struct ev_watcher_list *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187		255
188	static void	256	static void
189	anfds_init (ANFD *base, int count)	257	anfds_init (ANFD *base, int count)
190	{	258	{
191	while (count--)	259	while (count--)
…		…
196		264
197	++base;	265	++base;
198	}	266	}
199	}	267	}
200		268
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	269	static void
211	event (W w, int events)	270	event (EV_P_ W w, int events)
212	{	271	{
213	if (w->pending)	272	if (w->pending)
214	{	273	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	274	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;	275	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	280	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	281	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	282	}
224		283
225	static void	284	static void
226	queue_events (W *events, int eventcnt, int type)	285	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	286	{
228	int i;	287	int i;
229		288
230	for (i = 0; i < eventcnt; ++i)	289	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	290	event (EV_A_ events [i], type);
232	}	291	}
233		292
234	static void	293	static void
235	fd_event (int fd, int events)	294	fd_event (EV_P_ int fd, int events)
236	{	295	{
237	ANFD *anfd = anfds + fd;	296	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	297	struct ev_io *w;
239		298
240	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	299	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	300	{
242	int ev = w->events & events;	301	int ev = w->events & events;
243		302
244	if (ev)	303	if (ev)
245	event ((W)w, ev);	304	event (EV_A_ (W)w, ev);
246	}	305	}
247	}	306	}
248		307
249	/*****************************************************************************/	308	/*****************************************************************************/
250		309
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	310	static void
255	fd_reify (void)	311	fd_reify (EV_P)
256	{	312	{
257	int i;	313	int i;
258		314
259	for (i = 0; i < fdchangecnt; ++i)	315	for (i = 0; i < fdchangecnt; ++i)
260	{	316	{
…		…
267	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	323	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	324	events |= w->events;
269		325
270	anfd->reify = 0;	326	anfd->reify = 0;
271		327
272	if (anfd->events != events)
273	{
274	method_modify (fd, anfd->events, events);	328	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	329	anfd->events = events;
276	}
277	}	330	}
278		331
279	fdchangecnt = 0;	332	fdchangecnt = 0;
280	}	333	}
281		334
282	static void	335	static void
283	fd_change (int fd)	336	fd_change (EV_P_ int fd)
284	{	337	{
285	if (anfds [fd].reify || fdchangecnt < 0)	338	if (anfds [fd].reify || fdchangecnt < 0)
286	return;	339	return;
287		340
288	anfds [fd].reify = 1;	341	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	344	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	345	fdchanges [fdchangecnt - 1] = fd;
293	}	346	}
294		347
295	static void	348	static void
296	fd_kill (int fd)	349	fd_kill (EV_P_ int fd)
297	{	350	{
298	struct ev_io *w;	351	struct ev_io *w;
299		352
300	while ((w = (struct ev_io *)anfds [fd].head))	353	while ((w = (struct ev_io *)anfds [fd].head))
301	{	354	{
302	ev_io_stop (w);	355	ev_io_stop (EV_A_ w);
303	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	356	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
304	}	357	}
305	}	358	}
306		359
307	/* called on EBADF to verify fds */	360	/* called on EBADF to verify fds */
308	static void	361	static void
309	fd_ebadf (void)	362	fd_ebadf (EV_P)
310	{	363	{
311	int fd;	364	int fd;
312		365
313	for (fd = 0; fd < anfdmax; ++fd)	366	for (fd = 0; fd < anfdmax; ++fd)
314	if (anfds [fd].events)	367	if (anfds [fd].events)
315	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	368	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
316	fd_kill (fd);	369	fd_kill (EV_A_ fd);
317	}	370	}
318		371
319	/* called on ENOMEM in select/poll to kill some fds and retry */	372	/* called on ENOMEM in select/poll to kill some fds and retry */
320	static void	373	static void
321	fd_enomem (void)	374	fd_enomem (EV_P)
322	{	375	{
323	int fd = anfdmax;	376	int fd;
324		377
325	while (fd--)	378	for (fd = anfdmax; fd--; )
326	if (anfds [fd].events)	379	if (anfds [fd].events)
327	{	380	{
328	close (fd);
329	fd_kill (fd);	381	fd_kill (EV_A_ fd);
330	return;	382	return;
331	}	383	}
332	}	384	}
333		385
		386	/* susually called after fork if method needs to re-arm all fds from scratch */
		387	static void
		388	fd_rearm_all (EV_P)
		389	{
		390	int fd;
		391
		392	/* this should be highly optimised to not do anything but set a flag */
		393	for (fd = 0; fd < anfdmax; ++fd)
		394	if (anfds [fd].events)
		395	{
		396	anfds [fd].events = 0;
		397	fd_change (EV_A_ fd);
		398	}
		399	}
		400
334	/*****************************************************************************/	401	/*****************************************************************************/
335		402
336	static struct ev_timer **timers;
337	static int timermax, timercnt;
338
339	static struct ev_periodic **periodics;
340	static int periodicmax, periodiccnt;
341
342	static void	403	static void
343	upheap (WT *timers, int k)	404	upheap (WT *heap, int k)
344	{	405	{
345	WT w = timers [k];	406	WT w = heap [k];
346		407
347	while (k && timers [k >> 1]->at > w->at)	408	while (k && heap [k >> 1]->at > w->at)
348	{	409	{
349	timers [k] = timers [k >> 1];	410	heap [k] = heap [k >> 1];
350	timers [k]->active = k + 1;	411	((W)heap [k])->active = k + 1;
351	k >>= 1;	412	k >>= 1;
352	}	413	}
353		414
354	timers [k] = w;	415	heap [k] = w;
355	timers [k]->active = k + 1;	416	((W)heap [k])->active = k + 1;
356		417
357	}	418	}
358		419
359	static void	420	static void
360	downheap (WT *timers, int N, int k)	421	downheap (WT *heap, int N, int k)
361	{	422	{
362	WT w = timers [k];	423	WT w = heap [k];
363		424
364	while (k < (N >> 1))	425	while (k < (N >> 1))
365	{	426	{
366	int j = k << 1;	427	int j = k << 1;
367		428
368	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	429	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
369	++j;	430	++j;
370		431
371	if (w->at <= timers [j]->at)	432	if (w->at <= heap [j]->at)
372	break;	433	break;
373		434
374	timers [k] = timers [j];	435	heap [k] = heap [j];
375	timers [k]->active = k + 1;	436	((W)heap [k])->active = k + 1;
376	k = j;	437	k = j;
377	}	438	}
378		439
379	timers [k] = w;	440	heap [k] = w;
380	timers [k]->active = k + 1;	441	((W)heap [k])->active = k + 1;
381	}	442	}
382		443
383	/*****************************************************************************/	444	/*****************************************************************************/
384		445
385	typedef struct	446	typedef struct
386	{	447	{
387	struct ev_watcher_list *head;	448	WL head;
388	sig_atomic_t volatile gotsig;	449	sig_atomic_t volatile gotsig;
389	} ANSIG;	450	} ANSIG;
390		451
391	static ANSIG *signals;	452	static ANSIG *signals;
392	static int signalmax;	453	static int signalmax;
…		…
408	}	469	}
409		470
410	static void	471	static void
411	sighandler (int signum)	472	sighandler (int signum)
412	{	473	{
		474	#if WIN32
		475	signal (signum, sighandler);
		476	#endif
		477
413	signals [signum - 1].gotsig = 1;	478	signals [signum - 1].gotsig = 1;
414		479
415	if (!gotsig)	480	if (!gotsig)
416	{	481	{
417	int old_errno = errno;	482	int old_errno = errno;
…		…
420	errno = old_errno;	485	errno = old_errno;
421	}	486	}
422	}	487	}
423		488
424	static void	489	static void
425	sigcb (struct ev_io *iow, int revents)	490	sigcb (EV_P_ struct ev_io *iow, int revents)
426	{	491	{
427	struct ev_watcher_list *w;	492	WL w;
428	int signum;	493	int signum;
429		494
430	read (sigpipe [0], &revents, 1);	495	read (sigpipe [0], &revents, 1);
431	gotsig = 0;	496	gotsig = 0;
432		497
…		…
434	if (signals [signum].gotsig)	499	if (signals [signum].gotsig)
435	{	500	{
436	signals [signum].gotsig = 0;	501	signals [signum].gotsig = 0;
437		502
438	for (w = signals [signum].head; w; w = w->next)	503	for (w = signals [signum].head; w; w = w->next)
439	event ((W)w, EV_SIGNAL);	504	event (EV_A_ (W)w, EV_SIGNAL);
440	}	505	}
441	}	506	}
442		507
443	static void	508	static void
444	siginit (void)	509	siginit (EV_P)
445	{	510	{
446	#ifndef WIN32	511	#ifndef WIN32
447	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	512	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
448	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	513	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
449		514
…		…
451	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	516	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
452	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	517	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
453	#endif	518	#endif
454		519
455	ev_io_set (&sigev, sigpipe [0], EV_READ);	520	ev_io_set (&sigev, sigpipe [0], EV_READ);
456	ev_io_start (&sigev);	521	ev_io_start (EV_A_ &sigev);
		522	ev_unref (EV_A); /* child watcher should not keep loop alive */
457	}	523	}
458		524
459	/*****************************************************************************/	525	/*****************************************************************************/
460		526
461	static struct ev_idle **idles;	527	#ifndef WIN32
462	static int idlemax, idlecnt;
463
464	static struct ev_prepare **prepares;
465	static int preparemax, preparecnt;
466
467	static struct ev_check **checks;
468	static int checkmax, checkcnt;
469
470	/*****************************************************************************/
471		528
472	static struct ev_child *childs [PID_HASHSIZE];	529	static struct ev_child *childs [PID_HASHSIZE];
473	static struct ev_signal childev;	530	static struct ev_signal childev;
474		531
475	#ifndef WIN32
476
477	#ifndef WCONTINUED	532	#ifndef WCONTINUED
478	# define WCONTINUED 0	533	# define WCONTINUED 0
479	#endif	534	#endif
480		535
481	static void	536	static void
482	child_reap (struct ev_signal *sw, int chain, int pid, int status)	537	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
483	{	538	{
484	struct ev_child *w;	539	struct ev_child *w;
485		540
486	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	541	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
487	if (w->pid == pid || !w->pid)	542	if (w->pid == pid || !w->pid)
488	{	543	{
489	w->priority = sw->priority; /* need to do it *now* */	544	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
490	w->rpid = pid;	545	w->rpid = pid;
491	w->rstatus = status;	546	w->rstatus = status;
492	event ((W)w, EV_CHILD);	547	event (EV_A_ (W)w, EV_CHILD);
493	}	548	}
494	}	549	}
495		550
496	static void	551	static void
497	childcb (struct ev_signal *sw, int revents)	552	childcb (EV_P_ struct ev_signal *sw, int revents)
498	{	553	{
499	int pid, status;	554	int pid, status;
500		555
501	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	556	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
502	{	557	{
503	/* make sure we are called again until all childs have been reaped */	558	/* make sure we are called again until all childs have been reaped */
504	event ((W)sw, EV_SIGNAL);	559	event (EV_A_ (W)sw, EV_SIGNAL);
505		560
506	child_reap (sw, pid, pid, status);	561	child_reap (EV_A_ sw, pid, pid, status);
507	child_reap (sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	562	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
508	}	563	}
509	}	564	}
510		565
511	#endif	566	#endif
512		567
…		…
537	return EV_VERSION_MINOR;	592	return EV_VERSION_MINOR;
538	}	593	}
539		594
540	/* return true if we are running with elevated privileges and should ignore env variables */	595	/* return true if we are running with elevated privileges and should ignore env variables */
541	static int	596	static int
542	enable_secure ()	597	enable_secure (void)
543	{	598	{
544	#ifdef WIN32	599	#ifdef WIN32
545	return 0;	600	return 0;
546	#else	601	#else
547	return getuid () != geteuid ()	602	return getuid () != geteuid ()
548	|| getgid () != getegid ();	603	|| getgid () != getegid ();
549	#endif	604	#endif
550	}	605	}
551		606
552	int ev_init (int methods)	607	int
		608	ev_method (EV_P)
553	{	609	{
		610	return method;
		611	}
		612
		613	static void
		614	loop_init (EV_P_ int methods)
		615	{
554	if (!ev_method)	616	if (!method)
555	{	617	{
556	#if EV_USE_MONOTONIC	618	#if EV_USE_MONOTONIC
557	{	619	{
558	struct timespec ts;	620	struct timespec ts;
559	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	621	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
560	have_monotonic = 1;	622	have_monotonic = 1;
561	}	623	}
562	#endif	624	#endif
563		625
564	ev_now = ev_time ();	626	rt_now = ev_time ();
565	now = get_clock ();	627	mn_now = get_clock ();
566	now_floor = now;	628	now_floor = mn_now;
567	diff = ev_now - now;	629	rtmn_diff = rt_now - mn_now;
568
569	if (pipe (sigpipe))
570	return 0;
571		630
572	if (methods == EVMETHOD_AUTO)	631	if (methods == EVMETHOD_AUTO)
573	if (!enable_secure () && getenv ("LIBEV_METHODS"))	632	if (!enable_secure () && getenv ("LIBEV_METHODS"))
574	methods = atoi (getenv ("LIBEV_METHODS"));	633	methods = atoi (getenv ("LIBEV_METHODS"));
575	else	634	else
576	methods = EVMETHOD_ANY;	635	methods = EVMETHOD_ANY;
577		636
578	ev_method = 0;	637	method = 0;
		638	#if EV_USE_WIN32
		639	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		640	#endif
579	#if EV_USE_KQUEUE	641	#if EV_USE_KQUEUE
580	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	642	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
581	#endif	643	#endif
582	#if EV_USE_EPOLL	644	#if EV_USE_EPOLL
583	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	645	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
584	#endif	646	#endif
585	#if EV_USE_POLL	647	#if EV_USE_POLL
586	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	648	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
587	#endif	649	#endif
588	#if EV_USE_SELECT	650	#if EV_USE_SELECT
589	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	651	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
590	#endif	652	#endif
		653	}
		654	}
591		655
		656	void
		657	loop_destroy (EV_P)
		658	{
		659	int i;
		660
		661	#if EV_USE_WIN32
		662	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		663	#endif
		664	#if EV_USE_KQUEUE
		665	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		666	#endif
		667	#if EV_USE_EPOLL
		668	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		669	#endif
		670	#if EV_USE_POLL
		671	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		672	#endif
		673	#if EV_USE_SELECT
		674	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		675	#endif
		676
		677	for (i = NUMPRI; i--; )
		678	array_free (pending, [i]);
		679
		680	array_free (fdchange, );
		681	array_free (timer, );
		682	array_free (periodic, );
		683	array_free (idle, );
		684	array_free (prepare, );
		685	array_free (check, );
		686
		687	method = 0;
		688	/*TODO*/
		689	}
		690
		691	void
		692	loop_fork (EV_P)
		693	{
		694	/*TODO*/
		695	#if EV_USE_EPOLL
		696	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		697	#endif
		698	#if EV_USE_KQUEUE
		699	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		700	#endif
		701	}
		702
		703	#if EV_MULTIPLICITY
		704	struct ev_loop *
		705	ev_loop_new (int methods)
		706	{
		707	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		708
		709	loop_init (EV_A_ methods);
		710
		711	if (ev_method (EV_A))
		712	return loop;
		713
		714	return 0;
		715	}
		716
		717	void
		718	ev_loop_destroy (EV_P)
		719	{
		720	loop_destroy (EV_A);
		721	free (loop);
		722	}
		723
		724	void
		725	ev_loop_fork (EV_P)
		726	{
		727	loop_fork (EV_A);
		728	}
		729
		730	#endif
		731
		732	#if EV_MULTIPLICITY
		733	struct ev_loop default_loop_struct;
		734	static struct ev_loop *default_loop;
		735
		736	struct ev_loop *
		737	#else
		738	static int default_loop;
		739
		740	int
		741	#endif
		742	ev_default_loop (int methods)
		743	{
		744	if (sigpipe [0] == sigpipe [1])
		745	if (pipe (sigpipe))
		746	return 0;
		747
		748	if (!default_loop)
		749	{
		750	#if EV_MULTIPLICITY
		751	struct ev_loop *loop = default_loop = &default_loop_struct;
		752	#else
		753	default_loop = 1;
		754	#endif
		755
		756	loop_init (EV_A_ methods);
		757
592	if (ev_method)	758	if (ev_method (EV_A))
593	{	759	{
594	ev_watcher_init (&sigev, sigcb);	760	ev_watcher_init (&sigev, sigcb);
595	ev_set_priority (&sigev, EV_MAXPRI);	761	ev_set_priority (&sigev, EV_MAXPRI);
596	siginit ();	762	siginit (EV_A);
597		763
598	#ifndef WIN32	764	#ifndef WIN32
599	ev_signal_init (&childev, childcb, SIGCHLD);	765	ev_signal_init (&childev, childcb, SIGCHLD);
600	ev_set_priority (&childev, EV_MAXPRI);	766	ev_set_priority (&childev, EV_MAXPRI);
601	ev_signal_start (&childev);	767	ev_signal_start (EV_A_ &childev);
		768	ev_unref (EV_A); /* child watcher should not keep loop alive */
602	#endif	769	#endif
603	}	770	}
		771	else
		772	default_loop = 0;
604	}	773	}
605		774
606	return ev_method;	775	return default_loop;
607	}	776	}
608		777
609	/*****************************************************************************/
610
611	void	778	void
612	ev_fork_prepare (void)	779	ev_default_destroy (void)
613	{	780	{
614	/* nop */	781	#if EV_MULTIPLICITY
615	}	782	struct ev_loop *loop = default_loop;
616
617	void
618	ev_fork_parent (void)
619	{
620	/* nop */
621	}
622
623	void
624	ev_fork_child (void)
625	{
626	#if EV_USE_EPOLL
627	if (ev_method == EVMETHOD_EPOLL)
628	epoll_postfork_child ();
629	#endif	783	#endif
630		784
		785	ev_ref (EV_A); /* child watcher */
		786	ev_signal_stop (EV_A_ &childev);
		787
		788	ev_ref (EV_A); /* signal watcher */
631	ev_io_stop (&sigev);	789	ev_io_stop (EV_A_ &sigev);
		790
		791	close (sigpipe [0]); sigpipe [0] = 0;
		792	close (sigpipe [1]); sigpipe [1] = 0;
		793
		794	loop_destroy (EV_A);
		795	}
		796
		797	void
		798	ev_default_fork (void)
		799	{
		800	#if EV_MULTIPLICITY
		801	struct ev_loop *loop = default_loop;
		802	#endif
		803
		804	loop_fork (EV_A);
		805
		806	ev_io_stop (EV_A_ &sigev);
632	close (sigpipe [0]);	807	close (sigpipe [0]);
633	close (sigpipe [1]);	808	close (sigpipe [1]);
634	pipe (sigpipe);	809	pipe (sigpipe);
		810
		811	ev_ref (EV_A); /* signal watcher */
635	siginit ();	812	siginit (EV_A);
636	}	813	}
637		814
638	/*****************************************************************************/	815	/*****************************************************************************/
639		816
640	static void	817	static void
641	call_pending (void)	818	call_pending (EV_P)
642	{	819	{
643	int pri;	820	int pri;
644		821
645	for (pri = NUMPRI; pri--; )	822	for (pri = NUMPRI; pri--; )
646	while (pendingcnt [pri])	823	while (pendingcnt [pri])
…		…
648	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	825	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
649		826
650	if (p->w)	827	if (p->w)
651	{	828	{
652	p->w->pending = 0;	829	p->w->pending = 0;
653	p->w->cb (p->w, p->events);	830	p->w->cb (EV_A_ p->w, p->events);
654	}	831	}
655	}	832	}
656	}	833	}
657		834
658	static void	835	static void
659	timers_reify (void)	836	timers_reify (EV_P)
660	{	837	{
661	while (timercnt && timers [0]->at <= now)	838	while (timercnt && ((WT)timers [0])->at <= mn_now)
662	{	839	{
663	struct ev_timer *w = timers [0];	840	struct ev_timer *w = timers [0];
		841
		842	assert (("inactive timer on timer heap detected", ev_is_active (w)));
664		843
665	/* first reschedule or stop timer */	844	/* first reschedule or stop timer */
666	if (w->repeat)	845	if (w->repeat)
667	{	846	{
668	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	847	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
669	w->at = now + w->repeat;	848	((WT)w)->at = mn_now + w->repeat;
670	downheap ((WT *)timers, timercnt, 0);	849	downheap ((WT *)timers, timercnt, 0);
671	}	850	}
672	else	851	else
673	ev_timer_stop (w); /* nonrepeating: stop timer */	852	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
674		853
675	event ((W)w, EV_TIMEOUT);	854	event (EV_A_ (W)w, EV_TIMEOUT);
676	}	855	}
677	}	856	}
678		857
679	static void	858	static void
680	periodics_reify (void)	859	periodics_reify (EV_P)
681	{	860	{
682	while (periodiccnt && periodics [0]->at <= ev_now)	861	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
683	{	862	{
684	struct ev_periodic *w = periodics [0];	863	struct ev_periodic *w = periodics [0];
		864
		865	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
685		866
686	/* first reschedule or stop timer */	867	/* first reschedule or stop timer */
687	if (w->interval)	868	if (w->interval)
688	{	869	{
689	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	870	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
690	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	871	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
691	downheap ((WT *)periodics, periodiccnt, 0);	872	downheap ((WT *)periodics, periodiccnt, 0);
692	}	873	}
693	else	874	else
694	ev_periodic_stop (w); /* nonrepeating: stop timer */	875	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
695		876
696	event ((W)w, EV_PERIODIC);	877	event (EV_A_ (W)w, EV_PERIODIC);
697	}	878	}
698	}	879	}
699		880
700	static void	881	static void
701	periodics_reschedule (ev_tstamp diff)	882	periodics_reschedule (EV_P)
702	{	883	{
703	int i;	884	int i;
704		885
705	/* adjust periodics after time jump */	886	/* adjust periodics after time jump */
706	for (i = 0; i < periodiccnt; ++i)	887	for (i = 0; i < periodiccnt; ++i)
707	{	888	{
708	struct ev_periodic *w = periodics [i];	889	struct ev_periodic *w = periodics [i];
709		890
710	if (w->interval)	891	if (w->interval)
711	{	892	{
712	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	893	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
713		894
714	if (fabs (diff) >= 1e-4)	895	if (fabs (diff) >= 1e-4)
715	{	896	{
716	ev_periodic_stop (w);	897	ev_periodic_stop (EV_A_ w);
717	ev_periodic_start (w);	898	ev_periodic_start (EV_A_ w);
718		899
719	i = 0; /* restart loop, inefficient, but time jumps should be rare */	900	i = 0; /* restart loop, inefficient, but time jumps should be rare */
720	}	901	}
721	}	902	}
722	}	903	}
723	}	904	}
724		905
725	static int	906	inline int
726	time_update_monotonic (void)	907	time_update_monotonic (EV_P)
727	{	908	{
728	now = get_clock ();	909	mn_now = get_clock ();
729		910
730	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	911	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
731	{	912	{
732	ev_now = now + diff;	913	rt_now = rtmn_diff + mn_now;
733	return 0;	914	return 0;
734	}	915	}
735	else	916	else
736	{	917	{
737	now_floor = now;	918	now_floor = mn_now;
738	ev_now = ev_time ();	919	rt_now = ev_time ();
739	return 1;	920	return 1;
740	}	921	}
741	}	922	}
742		923
743	static void	924	static void
744	time_update (void)	925	time_update (EV_P)
745	{	926	{
746	int i;	927	int i;
747		928
748	#if EV_USE_MONOTONIC	929	#if EV_USE_MONOTONIC
749	if (expect_true (have_monotonic))	930	if (expect_true (have_monotonic))
750	{	931	{
751	if (time_update_monotonic ())	932	if (time_update_monotonic (EV_A))
752	{	933	{
753	ev_tstamp odiff = diff;	934	ev_tstamp odiff = rtmn_diff;
754		935
755	for (i = 4; --i; ) /* loop a few times, before making important decisions */	936	for (i = 4; --i; ) /* loop a few times, before making important decisions */
756	{	937	{
757	diff = ev_now - now;	938	rtmn_diff = rt_now - mn_now;
758		939
759	if (fabs (odiff - diff) < MIN_TIMEJUMP)	940	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
760	return; /* all is well */	941	return; /* all is well */
761		942
762	ev_now = ev_time ();	943	rt_now = ev_time ();
763	now = get_clock ();	944	mn_now = get_clock ();
764	now_floor = now;	945	now_floor = mn_now;
765	}	946	}
766		947
767	periodics_reschedule (diff - odiff);	948	periodics_reschedule (EV_A);
768	/* no timer adjustment, as the monotonic clock doesn't jump */	949	/* no timer adjustment, as the monotonic clock doesn't jump */
		950	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
769	}	951	}
770	}	952	}
771	else	953	else
772	#endif	954	#endif
773	{	955	{
774	ev_now = ev_time ();	956	rt_now = ev_time ();
775		957
776	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	958	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
777	{	959	{
778	periodics_reschedule (ev_now - now);	960	periodics_reschedule (EV_A);
779		961
780	/* adjust timers. this is easy, as the offset is the same for all */	962	/* adjust timers. this is easy, as the offset is the same for all */
781	for (i = 0; i < timercnt; ++i)	963	for (i = 0; i < timercnt; ++i)
782	timers [i]->at += diff;	964	((WT)timers [i])->at += rt_now - mn_now;
783	}	965	}
784		966
785	now = ev_now;	967	mn_now = rt_now;
786	}	968	}
787	}	969	}
788		970
789	int ev_loop_done;	971	void
		972	ev_ref (EV_P)
		973	{
		974	++activecnt;
		975	}
790		976
		977	void
		978	ev_unref (EV_P)
		979	{
		980	--activecnt;
		981	}
		982
		983	static int loop_done;
		984
		985	void
791	void ev_loop (int flags)	986	ev_loop (EV_P_ int flags)
792	{	987	{
793	double block;	988	double block;
794	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	989	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
795		990
796	do	991	do
797	{	992	{
798	/* queue check watchers (and execute them) */	993	/* queue check watchers (and execute them) */
799	if (expect_false (preparecnt))	994	if (expect_false (preparecnt))
800	{	995	{
801	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	996	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
802	call_pending ();	997	call_pending (EV_A);
803	}	998	}
804		999
805	/* update fd-related kernel structures */	1000	/* update fd-related kernel structures */
806	fd_reify ();	1001	fd_reify (EV_A);
807		1002
808	/* calculate blocking time */	1003	/* calculate blocking time */
809		1004
810	/* we only need this for !monotonic clockor timers, but as we basically	1005	/* we only need this for !monotonic clockor timers, but as we basically
811	always have timers, we just calculate it always */	1006	always have timers, we just calculate it always */
812	#if EV_USE_MONOTONIC	1007	#if EV_USE_MONOTONIC
813	if (expect_true (have_monotonic))	1008	if (expect_true (have_monotonic))
814	time_update_monotonic ();	1009	time_update_monotonic (EV_A);
815	else	1010	else
816	#endif	1011	#endif
817	{	1012	{
818	ev_now = ev_time ();	1013	rt_now = ev_time ();
819	now = ev_now;	1014	mn_now = rt_now;
820	}	1015	}
821		1016
822	if (flags & EVLOOP_NONBLOCK || idlecnt)	1017	if (flags & EVLOOP_NONBLOCK || idlecnt)
823	block = 0.;	1018	block = 0.;
824	else	1019	else
825	{	1020	{
826	block = MAX_BLOCKTIME;	1021	block = MAX_BLOCKTIME;
827		1022
828	if (timercnt)	1023	if (timercnt)
829	{	1024	{
830	ev_tstamp to = timers [0]->at - now + method_fudge;	1025	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
831	if (block > to) block = to;	1026	if (block > to) block = to;
832	}	1027	}
833		1028
834	if (periodiccnt)	1029	if (periodiccnt)
835	{	1030	{
836	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	1031	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
837	if (block > to) block = to;	1032	if (block > to) block = to;
838	}	1033	}
839		1034
840	if (block < 0.) block = 0.;	1035	if (block < 0.) block = 0.;
841	}	1036	}
842		1037
843	method_poll (block);	1038	method_poll (EV_A_ block);
844		1039
845	/* update ev_now, do magic */	1040	/* update rt_now, do magic */
846	time_update ();	1041	time_update (EV_A);
847		1042
848	/* queue pending timers and reschedule them */	1043	/* queue pending timers and reschedule them */
849	timers_reify (); /* relative timers called last */	1044	timers_reify (EV_A); /* relative timers called last */
850	periodics_reify (); /* absolute timers called first */	1045	periodics_reify (EV_A); /* absolute timers called first */
851		1046
852	/* queue idle watchers unless io or timers are pending */	1047	/* queue idle watchers unless io or timers are pending */
853	if (!pendingcnt)	1048	if (!pendingcnt)
854	queue_events ((W *)idles, idlecnt, EV_IDLE);	1049	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
855		1050
856	/* queue check watchers, to be executed first */	1051	/* queue check watchers, to be executed first */
857	if (checkcnt)	1052	if (checkcnt)
858	queue_events ((W *)checks, checkcnt, EV_CHECK);	1053	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
859		1054
860	call_pending ();	1055	call_pending (EV_A);
861	}	1056	}
862	while (!ev_loop_done);	1057	while (activecnt && !loop_done);
863		1058
864	if (ev_loop_done != 2)	1059	if (loop_done != 2)
865	ev_loop_done = 0;	1060	loop_done = 0;
		1061	}
		1062
		1063	void
		1064	ev_unloop (EV_P_ int how)
		1065	{
		1066	loop_done = how;
866	}	1067	}
867		1068
868	/*****************************************************************************/	1069	/*****************************************************************************/
869		1070
870	static void	1071	inline void
871	wlist_add (WL *head, WL elem)	1072	wlist_add (WL *head, WL elem)
872	{	1073	{
873	elem->next = *head;	1074	elem->next = *head;
874	*head = elem;	1075	*head = elem;
875	}	1076	}
876		1077
877	static void	1078	inline void
878	wlist_del (WL *head, WL elem)	1079	wlist_del (WL *head, WL elem)
879	{	1080	{
880	while (*head)	1081	while (*head)
881	{	1082	{
882	if (*head == elem)	1083	if (*head == elem)
…		…
887		1088
888	head = &(*head)->next;	1089	head = &(*head)->next;
889	}	1090	}
890	}	1091	}
891		1092
892	static void	1093	inline void
893	ev_clear_pending (W w)	1094	ev_clear_pending (EV_P_ W w)
894	{	1095	{
895	if (w->pending)	1096	if (w->pending)
896	{	1097	{
897	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1098	pendings [ABSPRI (w)][w->pending - 1].w = 0;
898	w->pending = 0;	1099	w->pending = 0;
899	}	1100	}
900	}	1101	}
901		1102
902	static void	1103	inline void
903	ev_start (W w, int active)	1104	ev_start (EV_P_ W w, int active)
904	{	1105	{
905	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1106	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
906	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1107	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
907		1108
908	w->active = active;	1109	w->active = active;
		1110	ev_ref (EV_A);
909	}	1111	}
910		1112
911	static void	1113	inline void
912	ev_stop (W w)	1114	ev_stop (EV_P_ W w)
913	{	1115	{
		1116	ev_unref (EV_A);
914	w->active = 0;	1117	w->active = 0;
915	}	1118	}
916		1119
917	/*****************************************************************************/	1120	/*****************************************************************************/
918		1121
919	void	1122	void
920	ev_io_start (struct ev_io *w)	1123	ev_io_start (EV_P_ struct ev_io *w)
921	{	1124	{
922	int fd = w->fd;	1125	int fd = w->fd;
923		1126
924	if (ev_is_active (w))	1127	if (ev_is_active (w))
925	return;	1128	return;
926		1129
927	assert (("ev_io_start called with negative fd", fd >= 0));	1130	assert (("ev_io_start called with negative fd", fd >= 0));
928		1131
929	ev_start ((W)w, 1);	1132	ev_start (EV_A_ (W)w, 1);
930	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1133	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
931	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1134	wlist_add ((WL *)&anfds[fd].head, (WL)w);
932		1135
933	fd_change (fd);	1136	fd_change (EV_A_ fd);
934	}	1137	}
935		1138
936	void	1139	void
937	ev_io_stop (struct ev_io *w)	1140	ev_io_stop (EV_P_ struct ev_io *w)
938	{	1141	{
939	ev_clear_pending ((W)w);	1142	ev_clear_pending (EV_A_ (W)w);
940	if (!ev_is_active (w))	1143	if (!ev_is_active (w))
941	return;	1144	return;
942		1145
943	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1146	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
944	ev_stop ((W)w);	1147	ev_stop (EV_A_ (W)w);
945		1148
946	fd_change (w->fd);	1149	fd_change (EV_A_ w->fd);
947	}	1150	}
948		1151
949	void	1152	void
950	ev_timer_start (struct ev_timer *w)	1153	ev_timer_start (EV_P_ struct ev_timer *w)
951	{	1154	{
952	if (ev_is_active (w))	1155	if (ev_is_active (w))
953	return;	1156	return;
954		1157
955	w->at += now;	1158	((WT)w)->at += mn_now;
956		1159
957	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1160	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
958		1161
959	ev_start ((W)w, ++timercnt);	1162	ev_start (EV_A_ (W)w, ++timercnt);
960	array_needsize (timers, timermax, timercnt, );	1163	array_needsize (timers, timermax, timercnt, );
961	timers [timercnt - 1] = w;	1164	timers [timercnt - 1] = w;
962	upheap ((WT *)timers, timercnt - 1);	1165	upheap ((WT *)timers, timercnt - 1);
963	}
964		1166
		1167	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1168	}
		1169
965	void	1170	void
966	ev_timer_stop (struct ev_timer *w)	1171	ev_timer_stop (EV_P_ struct ev_timer *w)
967	{	1172	{
968	ev_clear_pending ((W)w);	1173	ev_clear_pending (EV_A_ (W)w);
969	if (!ev_is_active (w))	1174	if (!ev_is_active (w))
970	return;	1175	return;
971		1176
		1177	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1178
972	if (w->active < timercnt--)	1179	if (((W)w)->active < timercnt--)
973	{	1180	{
974	timers [w->active - 1] = timers [timercnt];	1181	timers [((W)w)->active - 1] = timers [timercnt];
975	downheap ((WT *)timers, timercnt, w->active - 1);	1182	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
976	}	1183	}
977		1184
978	w->at = w->repeat;	1185	((WT)w)->at = w->repeat;
979		1186
980	ev_stop ((W)w);	1187	ev_stop (EV_A_ (W)w);
981	}	1188	}
982		1189
983	void	1190	void
984	ev_timer_again (struct ev_timer *w)	1191	ev_timer_again (EV_P_ struct ev_timer *w)
985	{	1192	{
986	if (ev_is_active (w))	1193	if (ev_is_active (w))
987	{	1194	{
988	if (w->repeat)	1195	if (w->repeat)
989	{	1196	{
990	w->at = now + w->repeat;	1197	((WT)w)->at = mn_now + w->repeat;
991	downheap ((WT *)timers, timercnt, w->active - 1);	1198	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
992	}	1199	}
993	else	1200	else
994	ev_timer_stop (w);	1201	ev_timer_stop (EV_A_ w);
995	}	1202	}
996	else if (w->repeat)	1203	else if (w->repeat)
997	ev_timer_start (w);	1204	ev_timer_start (EV_A_ w);
998	}	1205	}
999		1206
1000	void	1207	void
1001	ev_periodic_start (struct ev_periodic *w)	1208	ev_periodic_start (EV_P_ struct ev_periodic *w)
1002	{	1209	{
1003	if (ev_is_active (w))	1210	if (ev_is_active (w))
1004	return;	1211	return;
1005		1212
1006	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1213	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1007		1214
1008	/* this formula differs from the one in periodic_reify because we do not always round up */	1215	/* this formula differs from the one in periodic_reify because we do not always round up */
1009	if (w->interval)	1216	if (w->interval)
1010	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1217	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
1011		1218
1012	ev_start ((W)w, ++periodiccnt);	1219	ev_start (EV_A_ (W)w, ++periodiccnt);
1013	array_needsize (periodics, periodicmax, periodiccnt, );	1220	array_needsize (periodics, periodicmax, periodiccnt, );
1014	periodics [periodiccnt - 1] = w;	1221	periodics [periodiccnt - 1] = w;
1015	upheap ((WT *)periodics, periodiccnt - 1);	1222	upheap ((WT *)periodics, periodiccnt - 1);
1016	}
1017		1223
		1224	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1225	}
		1226
1018	void	1227	void
1019	ev_periodic_stop (struct ev_periodic *w)	1228	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1020	{	1229	{
1021	ev_clear_pending ((W)w);	1230	ev_clear_pending (EV_A_ (W)w);
1022	if (!ev_is_active (w))	1231	if (!ev_is_active (w))
1023	return;	1232	return;
1024		1233
		1234	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1235
1025	if (w->active < periodiccnt--)	1236	if (((W)w)->active < periodiccnt--)
1026	{	1237	{
1027	periodics [w->active - 1] = periodics [periodiccnt];	1238	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1028	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1239	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1029	}	1240	}
1030		1241
1031	ev_stop ((W)w);	1242	ev_stop (EV_A_ (W)w);
		1243	}
		1244
		1245	void
		1246	ev_idle_start (EV_P_ struct ev_idle *w)
		1247	{
		1248	if (ev_is_active (w))
		1249	return;
		1250
		1251	ev_start (EV_A_ (W)w, ++idlecnt);
		1252	array_needsize (idles, idlemax, idlecnt, );
		1253	idles [idlecnt - 1] = w;
		1254	}
		1255
		1256	void
		1257	ev_idle_stop (EV_P_ struct ev_idle *w)
		1258	{
		1259	ev_clear_pending (EV_A_ (W)w);
		1260	if (ev_is_active (w))
		1261	return;
		1262
		1263	idles [((W)w)->active - 1] = idles [--idlecnt];
		1264	ev_stop (EV_A_ (W)w);
		1265	}
		1266
		1267	void
		1268	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1269	{
		1270	if (ev_is_active (w))
		1271	return;
		1272
		1273	ev_start (EV_A_ (W)w, ++preparecnt);
		1274	array_needsize (prepares, preparemax, preparecnt, );
		1275	prepares [preparecnt - 1] = w;
		1276	}
		1277
		1278	void
		1279	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1280	{
		1281	ev_clear_pending (EV_A_ (W)w);
		1282	if (ev_is_active (w))
		1283	return;
		1284
		1285	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1286	ev_stop (EV_A_ (W)w);
		1287	}
		1288
		1289	void
		1290	ev_check_start (EV_P_ struct ev_check *w)
		1291	{
		1292	if (ev_is_active (w))
		1293	return;
		1294
		1295	ev_start (EV_A_ (W)w, ++checkcnt);
		1296	array_needsize (checks, checkmax, checkcnt, );
		1297	checks [checkcnt - 1] = w;
		1298	}
		1299
		1300	void
		1301	ev_check_stop (EV_P_ struct ev_check *w)
		1302	{
		1303	ev_clear_pending (EV_A_ (W)w);
		1304	if (ev_is_active (w))
		1305	return;
		1306
		1307	checks [((W)w)->active - 1] = checks [--checkcnt];
		1308	ev_stop (EV_A_ (W)w);
1032	}	1309	}
1033		1310
1034	#ifndef SA_RESTART	1311	#ifndef SA_RESTART
1035	# define SA_RESTART 0	1312	# define SA_RESTART 0
1036	#endif	1313	#endif
1037		1314
1038	void	1315	void
1039	ev_signal_start (struct ev_signal *w)	1316	ev_signal_start (EV_P_ struct ev_signal *w)
1040	{	1317	{
		1318	#if EV_MULTIPLICITY
		1319	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1320	#endif
1041	if (ev_is_active (w))	1321	if (ev_is_active (w))
1042	return;	1322	return;
1043		1323
1044	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1324	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1045		1325
1046	ev_start ((W)w, 1);	1326	ev_start (EV_A_ (W)w, 1);
1047	array_needsize (signals, signalmax, w->signum, signals_init);	1327	array_needsize (signals, signalmax, w->signum, signals_init);
1048	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1328	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1049		1329
1050	if (!w->next)	1330	if (!((WL)w)->next)
1051	{	1331	{
		1332	#if WIN32
		1333	signal (w->signum, sighandler);
		1334	#else
1052	struct sigaction sa;	1335	struct sigaction sa;
1053	sa.sa_handler = sighandler;	1336	sa.sa_handler = sighandler;
1054	sigfillset (&sa.sa_mask);	1337	sigfillset (&sa.sa_mask);
1055	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1338	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1056	sigaction (w->signum, &sa, 0);	1339	sigaction (w->signum, &sa, 0);
		1340	#endif
1057	}	1341	}
1058	}	1342	}
1059		1343
1060	void	1344	void
1061	ev_signal_stop (struct ev_signal *w)	1345	ev_signal_stop (EV_P_ struct ev_signal *w)
1062	{	1346	{
1063	ev_clear_pending ((W)w);	1347	ev_clear_pending (EV_A_ (W)w);
1064	if (!ev_is_active (w))	1348	if (!ev_is_active (w))
1065	return;	1349	return;
1066		1350
1067	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1351	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1068	ev_stop ((W)w);	1352	ev_stop (EV_A_ (W)w);
1069		1353
1070	if (!signals [w->signum - 1].head)	1354	if (!signals [w->signum - 1].head)
1071	signal (w->signum, SIG_DFL);	1355	signal (w->signum, SIG_DFL);
1072	}	1356	}
1073		1357
1074	void	1358	void
1075	ev_idle_start (struct ev_idle *w)	1359	ev_child_start (EV_P_ struct ev_child *w)
1076	{	1360	{
		1361	#if EV_MULTIPLICITY
		1362	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1363	#endif
1077	if (ev_is_active (w))	1364	if (ev_is_active (w))
1078	return;	1365	return;
1079		1366
1080	ev_start ((W)w, ++idlecnt);	1367	ev_start (EV_A_ (W)w, 1);
1081	array_needsize (idles, idlemax, idlecnt, );	1368	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1082	idles [idlecnt - 1] = w;
1083	}	1369	}
1084		1370
1085	void	1371	void
1086	ev_idle_stop (struct ev_idle *w)	1372	ev_child_stop (EV_P_ struct ev_child *w)
1087	{	1373	{
1088	ev_clear_pending ((W)w);	1374	ev_clear_pending (EV_A_ (W)w);
1089	if (ev_is_active (w))	1375	if (ev_is_active (w))
1090	return;	1376	return;
1091		1377
1092	idles [w->active - 1] = idles [--idlecnt];
1093	ev_stop ((W)w);
1094	}
1095
1096	void
1097	ev_prepare_start (struct ev_prepare *w)
1098	{
1099	if (ev_is_active (w))
1100	return;
1101
1102	ev_start ((W)w, ++preparecnt);
1103	array_needsize (prepares, preparemax, preparecnt, );
1104	prepares [preparecnt - 1] = w;
1105	}
1106
1107	void
1108	ev_prepare_stop (struct ev_prepare *w)
1109	{
1110	ev_clear_pending ((W)w);
1111	if (ev_is_active (w))
1112	return;
1113
1114	prepares [w->active - 1] = prepares [--preparecnt];
1115	ev_stop ((W)w);
1116	}
1117
1118	void
1119	ev_check_start (struct ev_check *w)
1120	{
1121	if (ev_is_active (w))
1122	return;
1123
1124	ev_start ((W)w, ++checkcnt);
1125	array_needsize (checks, checkmax, checkcnt, );
1126	checks [checkcnt - 1] = w;
1127	}
1128
1129	void
1130	ev_check_stop (struct ev_check *w)
1131	{
1132	ev_clear_pending ((W)w);
1133	if (ev_is_active (w))
1134	return;
1135
1136	checks [w->active - 1] = checks [--checkcnt];
1137	ev_stop ((W)w);
1138	}
1139
1140	void
1141	ev_child_start (struct ev_child *w)
1142	{
1143	if (ev_is_active (w))
1144	return;
1145
1146	ev_start ((W)w, 1);
1147	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1148	}
1149
1150	void
1151	ev_child_stop (struct ev_child *w)
1152	{
1153	ev_clear_pending ((W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1378	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1158	ev_stop ((W)w);	1379	ev_stop (EV_A_ (W)w);
1159	}	1380	}
1160		1381
1161	/*****************************************************************************/	1382	/*****************************************************************************/
1162		1383
1163	struct ev_once	1384	struct ev_once
…		…
1167	void (*cb)(int revents, void *arg);	1388	void (*cb)(int revents, void *arg);
1168	void *arg;	1389	void *arg;
1169	};	1390	};
1170		1391
1171	static void	1392	static void
1172	once_cb (struct ev_once *once, int revents)	1393	once_cb (EV_P_ struct ev_once *once, int revents)
1173	{	1394	{
1174	void (*cb)(int revents, void *arg) = once->cb;	1395	void (*cb)(int revents, void *arg) = once->cb;
1175	void *arg = once->arg;	1396	void *arg = once->arg;
1176		1397
1177	ev_io_stop (&once->io);	1398	ev_io_stop (EV_A_ &once->io);
1178	ev_timer_stop (&once->to);	1399	ev_timer_stop (EV_A_ &once->to);
1179	free (once);	1400	free (once);
1180		1401
1181	cb (revents, arg);	1402	cb (revents, arg);
1182	}	1403	}
1183		1404
1184	static void	1405	static void
1185	once_cb_io (struct ev_io *w, int revents)	1406	once_cb_io (EV_P_ struct ev_io *w, int revents)
1186	{	1407	{
1187	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1408	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1188	}	1409	}
1189		1410
1190	static void	1411	static void
1191	once_cb_to (struct ev_timer *w, int revents)	1412	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1192	{	1413	{
1193	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1414	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1194	}	1415	}
1195		1416
1196	void	1417	void
1197	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1418	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1198	{	1419	{
1199	struct ev_once *once = malloc (sizeof (struct ev_once));	1420	struct ev_once *once = malloc (sizeof (struct ev_once));
1200		1421
1201	if (!once)	1422	if (!once)
1202	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1423	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1207		1428
1208	ev_watcher_init (&once->io, once_cb_io);	1429	ev_watcher_init (&once->io, once_cb_io);
1209	if (fd >= 0)	1430	if (fd >= 0)
1210	{	1431	{
1211	ev_io_set (&once->io, fd, events);	1432	ev_io_set (&once->io, fd, events);
1212	ev_io_start (&once->io);	1433	ev_io_start (EV_A_ &once->io);
1213	}	1434	}
1214		1435
1215	ev_watcher_init (&once->to, once_cb_to);	1436	ev_watcher_init (&once->to, once_cb_to);
1216	if (timeout >= 0.)	1437	if (timeout >= 0.)
1217	{	1438	{
1218	ev_timer_set (&once->to, timeout, 0.);	1439	ev_timer_set (&once->to, timeout, 0.);
1219	ev_timer_start (&once->to);	1440	ev_timer_start (EV_A_ &once->to);
1220	}	1441	}
1221	}	1442	}
1222	}	1443	}
1223		1444
1224	/*****************************************************************************/
1225
1226	#if 0
1227
1228	struct ev_io wio;
1229
1230	static void
1231	sin_cb (struct ev_io *w, int revents)
1232	{
1233	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1234	}
1235
1236	static void
1237	ocb (struct ev_timer *w, int revents)
1238	{
1239	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1240	ev_timer_stop (w);
1241	ev_timer_start (w);
1242	}
1243
1244	static void
1245	scb (struct ev_signal *w, int revents)
1246	{
1247	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1248	ev_io_stop (&wio);
1249	ev_io_start (&wio);
1250	}
1251
1252	static void
1253	gcb (struct ev_signal *w, int revents)
1254	{
1255	fprintf (stderr, "generic %x\n", revents);
1256
1257	}
1258
1259	int main (void)
1260	{
1261	ev_init (0);
1262
1263	ev_io_init (&wio, sin_cb, 0, EV_READ);
1264	ev_io_start (&wio);
1265
1266	struct ev_timer t[10000];
1267
1268	#if 0
1269	int i;
1270	for (i = 0; i < 10000; ++i)
1271	{
1272	struct ev_timer *w = t + i;
1273	ev_watcher_init (w, ocb, i);
1274	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1275	ev_timer_start (w);
1276	if (drand48 () < 0.5)
1277	ev_timer_stop (w);
1278	}
1279	#endif
1280
1281	struct ev_timer t1;
1282	ev_timer_init (&t1, ocb, 5, 10);
1283	ev_timer_start (&t1);
1284
1285	struct ev_signal sig;
1286	ev_signal_init (&sig, scb, SIGQUIT);
1287	ev_signal_start (&sig);
1288
1289	struct ev_check cw;
1290	ev_check_init (&cw, gcb);
1291	ev_check_start (&cw);
1292
1293	struct ev_idle iw;
1294	ev_idle_init (&iw, gcb);
1295	ev_idle_start (&iw);
1296
1297	ev_loop (0);
1298
1299	return 0;
1300	}
1301
1302	#endif
1303
1304
1305
1306

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