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Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs.
Revision 1.59 by root, Sun Nov 4 18:15:16 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	#endif	33	#endif
34		34
35	#include <math.h>	35	#include <math.h>
36	#include <stdlib.h>	36	#include <stdlib.h>
…		…
42	#include <stdio.h>	42	#include <stdio.h>
43		43
44	#include <assert.h>	44	#include <assert.h>
45	#include <errno.h>	45	#include <errno.h>
46	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
47	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
48	#include <sys/time.h>	50	#include <sys/time.h>
49	#include <time.h>	51	#include <time.h>
50		52
51	/**/	53	/**/
52		54
…		…
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	64	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	65	#endif
64		66
65	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
67	#endif	73	#endif
68		74
69	#ifndef EV_USE_REALTIME	75	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	76	# define EV_USE_REALTIME 1
71	#endif	77	#endif
…		…
107		113
108	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
111		117
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115
116	static int have_monotonic; /* runtime */
117
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		119
122	/*****************************************************************************/	120	/*****************************************************************************/
123		121
124	ev_tstamp	122	typedef struct
		123	{
		124	struct ev_watcher_list *head;
		125	unsigned char events;
		126	unsigned char reify;
		127	} ANFD;
		128
		129	typedef struct
		130	{
		131	W w;
		132	int events;
		133	} ANPENDING;
		134
		135	#if EV_MULTIPLICITY
		136
		137	struct ev_loop
		138	{
		139	# define VAR(name,decl) decl;
		140	# include "ev_vars.h"
		141	};
		142	# undef VAR
		143	# include "ev_wrap.h"
		144
		145	#else
		146
		147	# define VAR(name,decl) static decl;
		148	# include "ev_vars.h"
		149	# undef VAR
		150
		151	#endif
		152
		153	/*****************************************************************************/
		154
		155	inline ev_tstamp
125	ev_time (void)	156	ev_time (void)
126	{	157	{
127	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
128	struct timespec ts;	159	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	166	#endif
136	}	167	}
137		168
138	static ev_tstamp	169	inline ev_tstamp
139	get_clock (void)	170	get_clock (void)
140	{	171	{
141	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	173	if (expect_true (have_monotonic))
143	{	174	{
…		…
146	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
147	}	178	}
148	#endif	179	#endif
149		180
150	return ev_time ();	181	return ev_time ();
		182	}
		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
151	}	188	}
152		189
153	#define array_roundsize(base,n) ((n) | 4 & ~3)	190	#define array_roundsize(base,n) ((n) | 4 & ~3)
154		191
155	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
…		…
167	cur = newcnt; \	204	cur = newcnt; \
168	}	205	}
169		206
170	/*****************************************************************************/	207	/*****************************************************************************/
171		208
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181
182	static void	209	static void
183	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
184	{	211	{
185	while (count--)	212	while (count--)
186	{	213	{
…		…
190		217
191	++base;	218	++base;
192	}	219	}
193	}	220	}
194		221
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	222	static void
205	event (W w, int events)	223	event (EV_P_ W w, int events)
206	{	224	{
207	if (w->pending)	225	if (w->pending)
208	{	226	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	227	pendings [ABSPRI (w)][w->pending - 1].events |= events;
210	return;	228	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	235	}
218		236
219	static void	237	static void
220	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	239	{
222	int i;	240	int i;
223		241
224	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	243	event (EV_A_ events [i], type);
226	}	244	}
227		245
228	static void	246	static void
229	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
230	{	248	{
231	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	250	struct ev_io *w;
233		251
234	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	253	{
236	int ev = w->events & events;	254	int ev = w->events & events;
237		255
238	if (ev)	256	if (ev)
239	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
240	}	258	}
241	}	259	}
242		260
243	/*****************************************************************************/	261	/*****************************************************************************/
244		262
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	263	static void
249	fd_reify (void)	264	fd_reify (EV_P)
250	{	265	{
251	int i;	266	int i;
252		267
253	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
254	{	269	{
…		…
256	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	272	struct ev_io *w;
258		273
259	int events = 0;	274	int events = 0;
260		275
261	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	277	events |= w->events;
263		278
264	anfd->reify = 0;	279	anfd->reify = 0;
265		280
266	if (anfd->events != events)	281	if (anfd->events != events)
267	{	282	{
268	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	284	anfd->events = events;
270	}	285	}
271	}	286	}
272		287
273	fdchangecnt = 0;	288	fdchangecnt = 0;
274	}	289	}
275		290
276	static void	291	static void
277	fd_change (int fd)	292	fd_change (EV_P_ int fd)
278	{	293	{
279	if (anfds [fd].reify || fdchangecnt < 0)	294	if (anfds [fd].reify || fdchangecnt < 0)
280	return;	295	return;
281		296
282	anfds [fd].reify = 1;	297	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
287	}	302	}
288		303
289	static void	304	static void
290	fd_kill (int fd)	305	fd_kill (EV_P_ int fd)
291	{	306	{
292	struct ev_io *w;	307	struct ev_io *w;
293		308
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	309	while ((w = (struct ev_io *)anfds [fd].head))
296	{	310	{
297	ev_io_stop (w);	311	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	313	}
300	}	314	}
301		315
302	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
303	static void	317	static void
304	fd_ebadf (void)	318	fd_ebadf (EV_P)
305	{	319	{
306	int fd;	320	int fd;
307		321
308	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	323	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	325	fd_kill (EV_A_ fd);
312	}	326	}
313		327
314	/* called on ENOMEM in select/poll to kill some fds and retry */	328	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	329	static void
316	fd_enomem (void)	330	fd_enomem (EV_P)
317	{	331	{
318	int fd = anfdmax;	332	int fd = anfdmax;
319		333
320	while (fd--)	334	while (fd--)
321	if (anfds [fd].events)	335	if (anfds [fd].events)
322	{	336	{
323	close (fd);	337	close (fd);
324	fd_kill (fd);	338	fd_kill (EV_A_ fd);
325	return;	339	return;
326	}	340	}
327	}	341	}
328		342
		343	/* susually called after fork if method needs to re-arm all fds from scratch */
		344	static void
		345	fd_rearm_all (EV_P)
		346	{
		347	int fd;
		348
		349	/* this should be highly optimised to not do anything but set a flag */
		350	for (fd = 0; fd < anfdmax; ++fd)
		351	if (anfds [fd].events)
		352	{
		353	anfds [fd].events = 0;
		354	fd_change (fd);
		355	}
		356	}
		357
329	/*****************************************************************************/	358	/*****************************************************************************/
330		359
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	360	static void
338	upheap (WT *timers, int k)	361	upheap (WT *heap, int k)
339	{	362	{
340	WT w = timers [k];	363	WT w = heap [k];
341		364
342	while (k && timers [k >> 1]->at > w->at)	365	while (k && heap [k >> 1]->at > w->at)
343	{	366	{
344	timers [k] = timers [k >> 1];	367	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	368	heap [k]->active = k + 1;
346	k >>= 1;	369	k >>= 1;
347	}	370	}
348		371
349	timers [k] = w;	372	heap [k] = w;
350	timers [k]->active = k + 1;	373	heap [k]->active = k + 1;
351		374
352	}	375	}
353		376
354	static void	377	static void
355	downheap (WT *timers, int N, int k)	378	downheap (WT *heap, int N, int k)
356	{	379	{
357	WT w = timers [k];	380	WT w = heap [k];
358		381
359	while (k < (N >> 1))	382	while (k < (N >> 1))
360	{	383	{
361	int j = k << 1;	384	int j = k << 1;
362		385
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	386	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	387	++j;
365		388
366	if (w->at <= timers [j]->at)	389	if (w->at <= heap [j]->at)
367	break;	390	break;
368		391
369	timers [k] = timers [j];	392	heap [k] = heap [j];
370	timers [k]->active = k + 1;	393	heap [k]->active = k + 1;
371	k = j;	394	k = j;
372	}	395	}
373		396
374	timers [k] = w;	397	heap [k] = w;
375	timers [k]->active = k + 1;	398	heap [k]->active = k + 1;
376	}	399	}
377		400
378	/*****************************************************************************/	401	/*****************************************************************************/
379		402
380	typedef struct	403	typedef struct
381	{	404	{
382	struct ev_signal *head;	405	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	406	sig_atomic_t volatile gotsig;
384	} ANSIG;	407	} ANSIG;
385		408
386	static ANSIG *signals;	409	static ANSIG *signals;
387	static int signalmax;	410	static int signalmax;
…		…
407	{	430	{
408	signals [signum - 1].gotsig = 1;	431	signals [signum - 1].gotsig = 1;
409		432
410	if (!gotsig)	433	if (!gotsig)
411	{	434	{
		435	int old_errno = errno;
412	gotsig = 1;	436	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	437	write (sigpipe [1], &signum, 1);
		438	errno = old_errno;
414	}	439	}
415	}	440	}
416		441
417	static void	442	static void
418	sigcb (struct ev_io *iow, int revents)	443	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	444	{
420	struct ev_signal *w;	445	struct ev_watcher_list *w;
421	int signum;	446	int signum;
422		447
423	read (sigpipe [0], &revents, 1);	448	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	449	gotsig = 0;
425		450
…		…
427	if (signals [signum].gotsig)	452	if (signals [signum].gotsig)
428	{	453	{
429	signals [signum].gotsig = 0;	454	signals [signum].gotsig = 0;
430		455
431	for (w = signals [signum].head; w; w = w->next)	456	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	457	event (EV_A_ (W)w, EV_SIGNAL);
433	}	458	}
434	}	459	}
435		460
436	static void	461	static void
437	siginit (void)	462	siginit (EV_P)
438	{	463	{
		464	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	465	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	466	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		467
442	/* rather than sort out wether we really need nb, set it */	468	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	469	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	470	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		471	#endif
445		472
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	473	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	474	ev_io_start (EV_A_ &sigev);
		475	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	476	}
449		477
450	/*****************************************************************************/	478	/*****************************************************************************/
451		479
452	static struct ev_idle **idles;	480	#ifndef WIN32
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462		481
463	static struct ev_child *childs [PID_HASHSIZE];	482	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;	483	static struct ev_signal childev;
465		484
466	#ifndef WCONTINUED	485	#ifndef WCONTINUED
467	# define WCONTINUED 0	486	# define WCONTINUED 0
468	#endif	487	#endif
469		488
470	static void	489	static void
471	childcb (struct ev_signal *sw, int revents)	490	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	491	{
473	struct ev_child *w;	492	struct ev_child *w;
		493
		494	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		495	if (w->pid == pid || !w->pid)
		496	{
		497	w->priority = sw->priority; /* need to do it *now* */
		498	w->rpid = pid;
		499	w->rstatus = status;
		500	event (EV_A_ (W)w, EV_CHILD);
		501	}
		502	}
		503
		504	static void
		505	childcb (EV_P_ struct ev_signal *sw, int revents)
		506	{
474	int pid, status;	507	int pid, status;
475		508
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	509	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	510	{
478	if (w->pid == pid || !w->pid)	511	/* make sure we are called again until all childs have been reaped */
479	{	512	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	513
481	event ((W)w, EV_CHILD);	514	child_reap (EV_A_ sw, pid, pid, status);
482	}	515	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		516	}
483	}	517	}
		518
		519	#endif
484		520
485	/*****************************************************************************/	521	/*****************************************************************************/
486		522
		523	#if EV_USE_KQUEUE
		524	# include "ev_kqueue.c"
		525	#endif
487	#if EV_USE_EPOLL	526	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	527	# include "ev_epoll.c"
489	#endif	528	#endif
490	#if EV_USE_POLL	529	#if EV_USE_POLL
491	# include "ev_poll.c"	530	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	543	ev_version_minor (void)
505	{	544	{
506	return EV_VERSION_MINOR;	545	return EV_VERSION_MINOR;
507	}	546	}
508		547
509	/* return true if we are running with elevated privileges and ignore env variables */	548	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	549	static int
511	enable_secure ()	550	enable_secure (void)
512	{	551	{
		552	#ifdef WIN32
		553	return 0;
		554	#else
513	return getuid () != geteuid ()	555	return getuid () != geteuid ()
514	|| getgid () != getegid ();	556	|| getgid () != getegid ();
		557	#endif
515	}	558	}
516		559
517	int ev_init (int methods)	560	int
		561	ev_method (EV_P)
518	{	562	{
		563	return method;
		564	}
		565
		566	static void
		567	loop_init (EV_P_ int methods)
		568	{
519	if (!ev_method)	569	if (!method)
520	{	570	{
521	#if EV_USE_MONOTONIC	571	#if EV_USE_MONOTONIC
522	{	572	{
523	struct timespec ts;	573	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	574	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	575	have_monotonic = 1;
526	}	576	}
527	#endif	577	#endif
528		578
529	ev_now = ev_time ();	579	rt_now = ev_time ();
530	now = get_clock ();	580	mn_now = get_clock ();
531	now_floor = now;	581	now_floor = mn_now;
532	diff = ev_now - now;	582	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		583
537	if (methods == EVMETHOD_AUTO)	584	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	585	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	586	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	587	else
541	methods = EVMETHOD_ANY;	588	methods = EVMETHOD_ANY;
542		589
543	ev_method = 0;	590	method = 0;
		591	#if EV_USE_KQUEUE
		592	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		593	#endif
544	#if EV_USE_EPOLL	594	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	595	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	596	#endif
547	#if EV_USE_POLL	597	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	598	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	599	#endif
550	#if EV_USE_SELECT	600	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	601	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	602	#endif
		603	}
		604	}
553		605
		606	void
		607	loop_destroy (EV_P)
		608	{
		609	#if EV_USE_KQUEUE
		610	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		611	#endif
		612	#if EV_USE_EPOLL
		613	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		614	#endif
		615	#if EV_USE_POLL
		616	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		617	#endif
		618	#if EV_USE_SELECT
		619	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		620	#endif
		621
		622	method = 0;
		623	/*TODO*/
		624	}
		625
		626	void
		627	loop_fork (EV_P)
		628	{
		629	/*TODO*/
		630	#if EV_USE_EPOLL
		631	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		632	#endif
		633	#if EV_USE_KQUEUE
		634	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		635	#endif
		636	}
		637
		638	#if EV_MULTIPLICITY
		639	struct ev_loop *
		640	ev_loop_new (int methods)
		641	{
		642	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		643
		644	loop_init (EV_A_ methods);
		645
		646	if (ev_methods (EV_A))
		647	return loop;
		648
		649	return 0;
		650	}
		651
		652	void
		653	ev_loop_destroy (EV_P)
		654	{
		655	loop_destroy (EV_A);
		656	free (loop);
		657	}
		658
		659	void
		660	ev_loop_fork (EV_P)
		661	{
		662	loop_fork (EV_A);
		663	}
		664
		665	#endif
		666
		667	#if EV_MULTIPLICITY
		668	struct ev_loop default_loop_struct;
		669	static struct ev_loop *default_loop;
		670
		671	struct ev_loop *
		672	#else
		673	static int default_loop;
		674
		675	int
		676	#endif
		677	ev_default_loop (int methods)
		678	{
		679	if (sigpipe [0] == sigpipe [1])
		680	if (pipe (sigpipe))
		681	return 0;
		682
		683	if (!default_loop)
		684	{
		685	#if EV_MULTIPLICITY
		686	struct ev_loop *loop = default_loop = &default_loop_struct;
		687	#else
		688	default_loop = 1;
		689	#endif
		690
		691	loop_init (EV_A_ methods);
		692
554	if (ev_method)	693	if (ev_method (EV_A))
555	{	694	{
556	ev_watcher_init (&sigev, sigcb);	695	ev_watcher_init (&sigev, sigcb);
		696	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	697	siginit (EV_A);
558		698
		699	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	700	ev_signal_init (&childev, childcb, SIGCHLD);
		701	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	702	ev_signal_start (EV_A_ &childev);
		703	ev_unref (EV_A); /* child watcher should not keep loop alive */
		704	#endif
561	}	705	}
		706	else
		707	default_loop = 0;
562	}	708	}
563		709
564	return ev_method;	710	return default_loop;
565	}	711	}
566		712
567	/*****************************************************************************/
568
569	void	713	void
570	ev_fork_prepare (void)	714	ev_default_destroy (void)
571	{	715	{
572	/* nop */	716	#if EV_MULTIPLICITY
573	}	717	struct ev_loop *loop = default_loop;
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif	718	#endif
588		719
		720	ev_ref (EV_A); /* child watcher */
		721	ev_signal_stop (EV_A_ &childev);
		722
		723	ev_ref (EV_A); /* signal watcher */
589	ev_io_stop (&sigev);	724	ev_io_stop (EV_A_ &sigev);
		725
		726	close (sigpipe [0]); sigpipe [0] = 0;
		727	close (sigpipe [1]); sigpipe [1] = 0;
		728
		729	loop_destroy (EV_A);
		730	}
		731
		732	void
		733	ev_default_fork (EV_P)
		734	{
		735	loop_fork (EV_A);
		736
		737	ev_io_stop (EV_A_ &sigev);
590	close (sigpipe [0]);	738	close (sigpipe [0]);
591	close (sigpipe [1]);	739	close (sigpipe [1]);
592	pipe (sigpipe);	740	pipe (sigpipe);
		741
		742	ev_ref (EV_A); /* signal watcher */
593	siginit ();	743	siginit (EV_A);
594	}	744	}
595		745
596	/*****************************************************************************/	746	/*****************************************************************************/
597		747
598	static void	748	static void
599	call_pending (void)	749	call_pending (EV_P)
600	{	750	{
601	int pri;	751	int pri;
602		752
603	for (pri = NUMPRI; pri--; )	753	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	754	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	756	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		757
608	if (p->w)	758	if (p->w)
609	{	759	{
610	p->w->pending = 0;	760	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	761	p->w->cb (EV_A_ p->w, p->events);
612	}	762	}
613	}	763	}
614	}	764	}
615		765
616	static void	766	static void
617	timers_reify (void)	767	timers_reify (EV_P)
618	{	768	{
619	while (timercnt && timers [0]->at <= now)	769	while (timercnt && timers [0]->at <= mn_now)
620	{	770	{
621	struct ev_timer *w = timers [0];	771	struct ev_timer *w = timers [0];
622		772
623	/* first reschedule or stop timer */	773	/* first reschedule or stop timer */
624	if (w->repeat)	774	if (w->repeat)
625	{	775	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	776	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	777	w->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	778	downheap ((WT *)timers, timercnt, 0);
629	}	779	}
630	else	780	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	781	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		782
633	event ((W)w, EV_TIMEOUT);	783	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	784	}
635	}	785	}
636		786
637	static void	787	static void
638	periodics_reify (void)	788	periodics_reify (EV_P)
639	{	789	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	790	while (periodiccnt && periodics [0]->at <= rt_now)
641	{	791	{
642	struct ev_periodic *w = periodics [0];	792	struct ev_periodic *w = periodics [0];
643		793
644	/* first reschedule or stop timer */	794	/* first reschedule or stop timer */
645	if (w->interval)	795	if (w->interval)
646	{	796	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	797	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
648	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	798	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	799	downheap ((WT *)periodics, periodiccnt, 0);
650	}	800	}
651	else	801	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	802	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		803
654	event ((W)w, EV_PERIODIC);	804	event (EV_A_ (W)w, EV_PERIODIC);
655	}	805	}
656	}	806	}
657		807
658	static void	808	static void
659	periodics_reschedule (ev_tstamp diff)	809	periodics_reschedule (EV_P)
660	{	810	{
661	int i;	811	int i;
662		812
663	/* adjust periodics after time jump */	813	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	814	for (i = 0; i < periodiccnt; ++i)
665	{	815	{
666	struct ev_periodic *w = periodics [i];	816	struct ev_periodic *w = periodics [i];
667		817
668	if (w->interval)	818	if (w->interval)
669	{	819	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	820	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
671		821
672	if (fabs (diff) >= 1e-4)	822	if (fabs (diff) >= 1e-4)
673	{	823	{
674	ev_periodic_stop (w);	824	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	825	ev_periodic_start (EV_A_ w);
676		826
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	827	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	828	}
679	}	829	}
680	}	830	}
681	}	831	}
682		832
683	static int	833	inline int
684	time_update_monotonic (void)	834	time_update_monotonic (EV_P)
685	{	835	{
686	now = get_clock ();	836	mn_now = get_clock ();
687		837
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	838	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	839	{
690	ev_now = now + diff;	840	rt_now = rtmn_diff + mn_now;
691	return 0;	841	return 0;
692	}	842	}
693	else	843	else
694	{	844	{
695	now_floor = now;	845	now_floor = mn_now;
696	ev_now = ev_time ();	846	rt_now = ev_time ();
697	return 1;	847	return 1;
698	}	848	}
699	}	849	}
700		850
701	static void	851	static void
702	time_update (void)	852	time_update (EV_P)
703	{	853	{
704	int i;	854	int i;
705		855
706	#if EV_USE_MONOTONIC	856	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	857	if (expect_true (have_monotonic))
708	{	858	{
709	if (time_update_monotonic ())	859	if (time_update_monotonic (EV_A))
710	{	860	{
711	ev_tstamp odiff = diff;	861	ev_tstamp odiff = rtmn_diff;
712		862
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	863	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	864	{
715	diff = ev_now - now;	865	rtmn_diff = rt_now - mn_now;
716		866
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	867	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	868	return; /* all is well */
719		869
720	ev_now = ev_time ();	870	rt_now = ev_time ();
721	now = get_clock ();	871	mn_now = get_clock ();
722	now_floor = now;	872	now_floor = mn_now;
723	}	873	}
724		874
725	periodics_reschedule (diff - odiff);	875	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	876	/* no timer adjustment, as the monotonic clock doesn't jump */
		877	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	878	}
728	}	879	}
729	else	880	else
730	#endif	881	#endif
731	{	882	{
732	ev_now = ev_time ();	883	rt_now = ev_time ();
733		884
734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	885	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	886	{
736	periodics_reschedule (ev_now - now);	887	periodics_reschedule (EV_A);
737		888
738	/* adjust timers. this is easy, as the offset is the same for all */	889	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	890	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	891	timers [i]->at += rt_now - mn_now;
741	}	892	}
742		893
743	now = ev_now;	894	mn_now = rt_now;
744	}	895	}
745	}	896	}
746		897
747	int ev_loop_done;	898	void
		899	ev_ref (EV_P)
		900	{
		901	++activecnt;
		902	}
748		903
		904	void
		905	ev_unref (EV_P)
		906	{
		907	--activecnt;
		908	}
		909
		910	static int loop_done;
		911
		912	void
749	void ev_loop (int flags)	913	ev_loop (EV_P_ int flags)
750	{	914	{
751	double block;	915	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	916	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		917
754	do	918	do
755	{	919	{
756	/* queue check watchers (and execute them) */	920	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	921	if (expect_false (preparecnt))
758	{	922	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	923	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	924	call_pending (EV_A);
761	}	925	}
762		926
763	/* update fd-related kernel structures */	927	/* update fd-related kernel structures */
764	fd_reify ();	928	fd_reify (EV_A);
765		929
766	/* calculate blocking time */	930	/* calculate blocking time */
767		931
768	/* we only need this for !monotonic clockor timers, but as we basically	932	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	933	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	934	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	935	if (expect_true (have_monotonic))
772	time_update_monotonic ();	936	time_update_monotonic (EV_A);
773	else	937	else
774	#endif	938	#endif
775	{	939	{
776	ev_now = ev_time ();	940	rt_now = ev_time ();
777	now = ev_now;	941	mn_now = rt_now;
778	}	942	}
779		943
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	944	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	945	block = 0.;
782	else	946	else
783	{	947	{
784	block = MAX_BLOCKTIME;	948	block = MAX_BLOCKTIME;
785		949
786	if (timercnt)	950	if (timercnt)
787	{	951	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	952	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
789	if (block > to) block = to;	953	if (block > to) block = to;
790	}	954	}
791		955
792	if (periodiccnt)	956	if (periodiccnt)
793	{	957	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	958	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
795	if (block > to) block = to;	959	if (block > to) block = to;
796	}	960	}
797		961
798	if (block < 0.) block = 0.;	962	if (block < 0.) block = 0.;
799	}	963	}
800		964
801	method_poll (block);	965	method_poll (EV_A_ block);
802		966
803	/* update ev_now, do magic */	967	/* update rt_now, do magic */
804	time_update ();	968	time_update (EV_A);
805		969
806	/* queue pending timers and reschedule them */	970	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	971	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	972	periodics_reify (EV_A); /* absolute timers called first */
809		973
810	/* queue idle watchers unless io or timers are pending */	974	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	975	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	976	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		977
814	/* queue check watchers, to be executed first */	978	/* queue check watchers, to be executed first */
815	if (checkcnt)	979	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	980	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		981
818	call_pending ();	982	call_pending (EV_A);
819	}	983	}
820	while (!ev_loop_done);	984	while (activecnt && !loop_done);
821		985
822	if (ev_loop_done != 2)	986	if (loop_done != 2)
823	ev_loop_done = 0;	987	loop_done = 0;
		988	}
		989
		990	void
		991	ev_unloop (EV_P_ int how)
		992	{
		993	loop_done = how;
824	}	994	}
825		995
826	/*****************************************************************************/	996	/*****************************************************************************/
827		997
828	static void	998	inline void
829	wlist_add (WL *head, WL elem)	999	wlist_add (WL *head, WL elem)
830	{	1000	{
831	elem->next = *head;	1001	elem->next = *head;
832	*head = elem;	1002	*head = elem;
833	}	1003	}
834		1004
835	static void	1005	inline void
836	wlist_del (WL *head, WL elem)	1006	wlist_del (WL *head, WL elem)
837	{	1007	{
838	while (*head)	1008	while (*head)
839	{	1009	{
840	if (*head == elem)	1010	if (*head == elem)
…		…
845		1015
846	head = &(*head)->next;	1016	head = &(*head)->next;
847	}	1017	}
848	}	1018	}
849		1019
850	static void	1020	inline void
851	ev_clear_pending (W w)	1021	ev_clear_pending (EV_P_ W w)
852	{	1022	{
853	if (w->pending)	1023	if (w->pending)
854	{	1024	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1025	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1026	w->pending = 0;
857	}	1027	}
858	}	1028	}
859		1029
860	static void	1030	inline void
861	ev_start (W w, int active)	1031	ev_start (EV_P_ W w, int active)
862	{	1032	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1033	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1034	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1035
866	w->active = active;	1036	w->active = active;
		1037	ev_ref (EV_A);
867	}	1038	}
868		1039
869	static void	1040	inline void
870	ev_stop (W w)	1041	ev_stop (EV_P_ W w)
871	{	1042	{
		1043	ev_unref (EV_A);
872	w->active = 0;	1044	w->active = 0;
873	}	1045	}
874		1046
875	/*****************************************************************************/	1047	/*****************************************************************************/
876		1048
877	void	1049	void
878	ev_io_start (struct ev_io *w)	1050	ev_io_start (EV_P_ struct ev_io *w)
879	{	1051	{
880	int fd = w->fd;	1052	int fd = w->fd;
881		1053
882	if (ev_is_active (w))	1054	if (ev_is_active (w))
883	return;	1055	return;
884		1056
885	assert (("ev_io_start called with negative fd", fd >= 0));	1057	assert (("ev_io_start called with negative fd", fd >= 0));
886		1058
887	ev_start ((W)w, 1);	1059	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1060	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1061	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1062
891	fd_change (fd);	1063	fd_change (EV_A_ fd);
892	}	1064	}
893		1065
894	void	1066	void
895	ev_io_stop (struct ev_io *w)	1067	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1068	{
897	ev_clear_pending ((W)w);	1069	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1070	if (!ev_is_active (w))
899	return;	1071	return;
900		1072
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1073	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1074	ev_stop (EV_A_ (W)w);
903		1075
904	fd_change (w->fd);	1076	fd_change (EV_A_ w->fd);
905	}	1077	}
906		1078
907	void	1079	void
908	ev_timer_start (struct ev_timer *w)	1080	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1081	{
910	if (ev_is_active (w))	1082	if (ev_is_active (w))
911	return;	1083	return;
912		1084
913	w->at += now;	1085	w->at += mn_now;
914		1086
915	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1087	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
916		1088
917	ev_start ((W)w, ++timercnt);	1089	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1090	array_needsize (timers, timermax, timercnt, );
919	timers [timercnt - 1] = w;	1091	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1092	upheap ((WT *)timers, timercnt - 1);
921	}	1093	}
922		1094
923	void	1095	void
924	ev_timer_stop (struct ev_timer *w)	1096	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1097	{
926	ev_clear_pending ((W)w);	1098	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1099	if (!ev_is_active (w))
928	return;	1100	return;
929		1101
930	if (w->active < timercnt--)	1102	if (w->active < timercnt--)
931	{	1103	{
…		…
933	downheap ((WT *)timers, timercnt, w->active - 1);	1105	downheap ((WT *)timers, timercnt, w->active - 1);
934	}	1106	}
935		1107
936	w->at = w->repeat;	1108	w->at = w->repeat;
937		1109
938	ev_stop ((W)w);	1110	ev_stop (EV_A_ (W)w);
939	}	1111	}
940		1112
941	void	1113	void
942	ev_timer_again (struct ev_timer *w)	1114	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1115	{
944	if (ev_is_active (w))	1116	if (ev_is_active (w))
945	{	1117	{
946	if (w->repeat)	1118	if (w->repeat)
947	{	1119	{
948	w->at = now + w->repeat;	1120	w->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1121	downheap ((WT *)timers, timercnt, w->active - 1);
950	}	1122	}
951	else	1123	else
952	ev_timer_stop (w);	1124	ev_timer_stop (EV_A_ w);
953	}	1125	}
954	else if (w->repeat)	1126	else if (w->repeat)
955	ev_timer_start (w);	1127	ev_timer_start (EV_A_ w);
956	}	1128	}
957		1129
958	void	1130	void
959	ev_periodic_start (struct ev_periodic *w)	1131	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1132	{
961	if (ev_is_active (w))	1133	if (ev_is_active (w))
962	return;	1134	return;
963		1135
964	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1136	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
965		1137
966	/* this formula differs from the one in periodic_reify because we do not always round up */	1138	/* this formula differs from the one in periodic_reify because we do not always round up */
967	if (w->interval)	1139	if (w->interval)
968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1140	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
969		1141
970	ev_start ((W)w, ++periodiccnt);	1142	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1143	array_needsize (periodics, periodicmax, periodiccnt, );
972	periodics [periodiccnt - 1] = w;	1144	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1145	upheap ((WT *)periodics, periodiccnt - 1);
974	}	1146	}
975		1147
976	void	1148	void
977	ev_periodic_stop (struct ev_periodic *w)	1149	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1150	{
979	ev_clear_pending ((W)w);	1151	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1152	if (!ev_is_active (w))
981	return;	1153	return;
982		1154
983	if (w->active < periodiccnt--)	1155	if (w->active < periodiccnt--)
984	{	1156	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1157	periodics [w->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1158	downheap ((WT *)periodics, periodiccnt, w->active - 1);
987	}	1159	}
988		1160
989	ev_stop ((W)w);	1161	ev_stop (EV_A_ (W)w);
990	}	1162	}
991		1163
992	void	1164	void
993	ev_signal_start (struct ev_signal *w)	1165	ev_idle_start (EV_P_ struct ev_idle *w)
994	{	1166	{
995	if (ev_is_active (w))	1167	if (ev_is_active (w))
996	return;	1168	return;
997		1169
		1170	ev_start (EV_A_ (W)w, ++idlecnt);
		1171	array_needsize (idles, idlemax, idlecnt, );
		1172	idles [idlecnt - 1] = w;
		1173	}
		1174
		1175	void
		1176	ev_idle_stop (EV_P_ struct ev_idle *w)
		1177	{
		1178	ev_clear_pending (EV_A_ (W)w);
		1179	if (ev_is_active (w))
		1180	return;
		1181
		1182	idles [w->active - 1] = idles [--idlecnt];
		1183	ev_stop (EV_A_ (W)w);
		1184	}
		1185
		1186	void
		1187	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1188	{
		1189	if (ev_is_active (w))
		1190	return;
		1191
		1192	ev_start (EV_A_ (W)w, ++preparecnt);
		1193	array_needsize (prepares, preparemax, preparecnt, );
		1194	prepares [preparecnt - 1] = w;
		1195	}
		1196
		1197	void
		1198	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1199	{
		1200	ev_clear_pending (EV_A_ (W)w);
		1201	if (ev_is_active (w))
		1202	return;
		1203
		1204	prepares [w->active - 1] = prepares [--preparecnt];
		1205	ev_stop (EV_A_ (W)w);
		1206	}
		1207
		1208	void
		1209	ev_check_start (EV_P_ struct ev_check *w)
		1210	{
		1211	if (ev_is_active (w))
		1212	return;
		1213
		1214	ev_start (EV_A_ (W)w, ++checkcnt);
		1215	array_needsize (checks, checkmax, checkcnt, );
		1216	checks [checkcnt - 1] = w;
		1217	}
		1218
		1219	void
		1220	ev_check_stop (EV_P_ struct ev_check *w)
		1221	{
		1222	ev_clear_pending (EV_A_ (W)w);
		1223	if (ev_is_active (w))
		1224	return;
		1225
		1226	checks [w->active - 1] = checks [--checkcnt];
		1227	ev_stop (EV_A_ (W)w);
		1228	}
		1229
		1230	#ifndef SA_RESTART
		1231	# define SA_RESTART 0
		1232	#endif
		1233
		1234	void
		1235	ev_signal_start (EV_P_ struct ev_signal *w)
		1236	{
		1237	#if EV_MULTIPLICITY
		1238	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1239	#endif
		1240	if (ev_is_active (w))
		1241	return;
		1242
998	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1243	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
999		1244
1000	ev_start ((W)w, 1);	1245	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1246	array_needsize (signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1247	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1248
1004	if (!w->next)	1249	if (!w->next)
1005	{	1250	{
1006	struct sigaction sa;	1251	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1252	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1253	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1254	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1255	sigaction (w->signum, &sa, 0);
1011	}	1256	}
1012	}	1257	}
1013		1258
1014	void	1259	void
1015	ev_signal_stop (struct ev_signal *w)	1260	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1261	{
1017	ev_clear_pending ((W)w);	1262	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1263	if (!ev_is_active (w))
1019	return;	1264	return;
1020		1265
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1266	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1267	ev_stop (EV_A_ (W)w);
1023		1268
1024	if (!signals [w->signum - 1].head)	1269	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1270	signal (w->signum, SIG_DFL);
1026	}	1271	}
1027		1272
1028	void	1273	void
1029	ev_idle_start (struct ev_idle *w)	1274	ev_child_start (EV_P_ struct ev_child *w)
1030	{	1275	{
		1276	#if EV_MULTIPLICITY
		1277	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1278	#endif
1031	if (ev_is_active (w))	1279	if (ev_is_active (w))
1032	return;	1280	return;
1033		1281
1034	ev_start ((W)w, ++idlecnt);	1282	ev_start (EV_A_ (W)w, 1);
1035	array_needsize (idles, idlemax, idlecnt, );	1283	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1036	idles [idlecnt - 1] = w;
1037	}	1284	}
1038		1285
1039	void	1286	void
1040	ev_idle_stop (struct ev_idle *w)	1287	ev_child_stop (EV_P_ struct ev_child *w)
1041	{	1288	{
1042	ev_clear_pending ((W)w);	1289	ev_clear_pending (EV_A_ (W)w);
1043	if (ev_is_active (w))	1290	if (ev_is_active (w))
1044	return;	1291	return;
1045		1292
1046	idles [w->active - 1] = idles [--idlecnt];
1047	ev_stop ((W)w);
1048	}
1049
1050	void
1051	ev_prepare_start (struct ev_prepare *w)
1052	{
1053	if (ev_is_active (w))
1054	return;
1055
1056	ev_start ((W)w, ++preparecnt);
1057	array_needsize (prepares, preparemax, preparecnt, );
1058	prepares [preparecnt - 1] = w;
1059	}
1060
1061	void
1062	ev_prepare_stop (struct ev_prepare *w)
1063	{
1064	ev_clear_pending ((W)w);
1065	if (ev_is_active (w))
1066	return;
1067
1068	prepares [w->active - 1] = prepares [--preparecnt];
1069	ev_stop ((W)w);
1070	}
1071
1072	void
1073	ev_check_start (struct ev_check *w)
1074	{
1075	if (ev_is_active (w))
1076	return;
1077
1078	ev_start ((W)w, ++checkcnt);
1079	array_needsize (checks, checkmax, checkcnt, );
1080	checks [checkcnt - 1] = w;
1081	}
1082
1083	void
1084	ev_check_stop (struct ev_check *w)
1085	{
1086	ev_clear_pending ((W)w);
1087	if (ev_is_active (w))
1088	return;
1089
1090	checks [w->active - 1] = checks [--checkcnt];
1091	ev_stop ((W)w);
1092	}
1093
1094	void
1095	ev_child_start (struct ev_child *w)
1096	{
1097	if (ev_is_active (w))
1098	return;
1099
1100	ev_start ((W)w, 1);
1101	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1102	}
1103
1104	void
1105	ev_child_stop (struct ev_child *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1293	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1294	ev_stop (EV_A_ (W)w);
1113	}	1295	}
1114		1296
1115	/*****************************************************************************/	1297	/*****************************************************************************/
1116		1298
1117	struct ev_once	1299	struct ev_once
…		…
1121	void (*cb)(int revents, void *arg);	1303	void (*cb)(int revents, void *arg);
1122	void *arg;	1304	void *arg;
1123	};	1305	};
1124		1306
1125	static void	1307	static void
1126	once_cb (struct ev_once *once, int revents)	1308	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1309	{
1128	void (*cb)(int revents, void *arg) = once->cb;	1310	void (*cb)(int revents, void *arg) = once->cb;
1129	void *arg = once->arg;	1311	void *arg = once->arg;
1130		1312
1131	ev_io_stop (&once->io);	1313	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1314	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1315	free (once);
1134		1316
1135	cb (revents, arg);	1317	cb (revents, arg);
1136	}	1318	}
1137		1319
1138	static void	1320	static void
1139	once_cb_io (struct ev_io *w, int revents)	1321	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1322	{
1141	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1323	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1142	}	1324	}
1143		1325
1144	static void	1326	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1327	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1328	{
1147	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1329	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1148	}	1330	}
1149		1331
1150	void	1332	void
1151	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1333	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1152	{	1334	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1335	struct ev_once *once = malloc (sizeof (struct ev_once));
1154		1336
1155	if (!once)	1337	if (!once)
1156	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1338	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1161		1343
1162	ev_watcher_init (&once->io, once_cb_io);	1344	ev_watcher_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1345	if (fd >= 0)
1164	{	1346	{
1165	ev_io_set (&once->io, fd, events);	1347	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1348	ev_io_start (EV_A_ &once->io);
1167	}	1349	}
1168		1350
1169	ev_watcher_init (&once->to, once_cb_to);	1351	ev_watcher_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1352	if (timeout >= 0.)
1171	{	1353	{
1172	ev_timer_set (&once->to, timeout, 0.);	1354	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1355	ev_timer_start (EV_A_ &once->to);
1174	}	1356	}
1175	}	1357	}
1176	}	1358	}
1177		1359
1178	/*****************************************************************************/
1179
1180	#if 0
1181
1182	struct ev_io wio;
1183
1184	static void
1185	sin_cb (struct ev_io *w, int revents)
1186	{
1187	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1188	}
1189
1190	static void
1191	ocb (struct ev_timer *w, int revents)
1192	{
1193	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1194	ev_timer_stop (w);
1195	ev_timer_start (w);
1196	}
1197
1198	static void
1199	scb (struct ev_signal *w, int revents)
1200	{
1201	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1202	ev_io_stop (&wio);
1203	ev_io_start (&wio);
1204	}
1205
1206	static void
1207	gcb (struct ev_signal *w, int revents)
1208	{
1209	fprintf (stderr, "generic %x\n", revents);
1210
1211	}
1212
1213	int main (void)
1214	{
1215	ev_init (0);
1216
1217	ev_io_init (&wio, sin_cb, 0, EV_READ);
1218	ev_io_start (&wio);
1219
1220	struct ev_timer t[10000];
1221
1222	#if 0
1223	int i;
1224	for (i = 0; i < 10000; ++i)
1225	{
1226	struct ev_timer *w = t + i;
1227	ev_watcher_init (w, ocb, i);
1228	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1229	ev_timer_start (w);
1230	if (drand48 () < 0.5)
1231	ev_timer_stop (w);
1232	}
1233	#endif
1234
1235	struct ev_timer t1;
1236	ev_timer_init (&t1, ocb, 5, 10);
1237	ev_timer_start (&t1);
1238
1239	struct ev_signal sig;
1240	ev_signal_init (&sig, scb, SIGQUIT);
1241	ev_signal_start (&sig);
1242
1243	struct ev_check cw;
1244	ev_check_init (&cw, gcb);
1245	ev_check_start (&cw);
1246
1247	struct ev_idle iw;
1248	ev_idle_init (&iw, gcb);
1249	ev_idle_start (&iw);
1250
1251	ev_loop (0);
1252
1253	return 0;
1254	}
1255
1256	#endif
1257
1258
1259
1260

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