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Comparing libev/ev.c (file contents):
Revision 1.45 by root, Sat Nov 3 09:19:58 2007 UTC vs.
Revision 1.60 by root, Sun Nov 4 18:29:44 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
113		135
114	typedef struct ev_watcher *W;	136	typedef struct ev_watcher *W;
115	typedef struct ev_watcher_list *WL;	137	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	138	typedef struct ev_watcher_time *WT;
117		139
118	static ev_tstamp now_floor, now, diff; /* monotonic clock */	140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	ev_tstamp ev_now;
120	int ev_method;
121
122	static int have_monotonic; /* runtime */
123
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
125	static void (*method_modify)(int fd, int oev, int nev);
126	static void (*method_poll)(ev_tstamp timeout);
127		141
128	/*****************************************************************************/	142	/*****************************************************************************/
129		143
130	ev_tstamp	144	typedef struct
		145	{
		146	struct ev_watcher_list *head;
		147	unsigned char events;
		148	unsigned char reify;
		149	} ANFD;
		150
		151	typedef struct
		152	{
		153	W w;
		154	int events;
		155	} ANPENDING;
		156
		157	#if EV_MULTIPLICITY
		158
		159	struct ev_loop
		160	{
		161	# define VAR(name,decl) decl;
		162	# include "ev_vars.h"
		163	};
		164	# undef VAR
		165	# include "ev_wrap.h"
		166
		167	#else
		168
		169	# define VAR(name,decl) static decl;
		170	# include "ev_vars.h"
		171	# undef VAR
		172
		173	#endif
		174
		175	/*****************************************************************************/
		176
		177	inline ev_tstamp
131	ev_time (void)	178	ev_time (void)
132	{	179	{
133	#if EV_USE_REALTIME	180	#if EV_USE_REALTIME
134	struct timespec ts;	181	struct timespec ts;
135	clock_gettime (CLOCK_REALTIME, &ts);	182	clock_gettime (CLOCK_REALTIME, &ts);
…		…
139	gettimeofday (&tv, 0);	186	gettimeofday (&tv, 0);
140	return tv.tv_sec + tv.tv_usec * 1e-6;	187	return tv.tv_sec + tv.tv_usec * 1e-6;
141	#endif	188	#endif
142	}	189	}
143		190
144	static ev_tstamp	191	inline ev_tstamp
145	get_clock (void)	192	get_clock (void)
146	{	193	{
147	#if EV_USE_MONOTONIC	194	#if EV_USE_MONOTONIC
148	if (expect_true (have_monotonic))	195	if (expect_true (have_monotonic))
149	{	196	{
…		…
152	return ts.tv_sec + ts.tv_nsec * 1e-9;	199	return ts.tv_sec + ts.tv_nsec * 1e-9;
153	}	200	}
154	#endif	201	#endif
155		202
156	return ev_time ();	203	return ev_time ();
		204	}
		205
		206	ev_tstamp
		207	ev_now (EV_P)
		208	{
		209	return rt_now;
157	}	210	}
158		211
159	#define array_roundsize(base,n) ((n) | 4 & ~3)	212	#define array_roundsize(base,n) ((n) | 4 & ~3)
160		213
161	#define array_needsize(base,cur,cnt,init) \	214	#define array_needsize(base,cur,cnt,init) \
…		…
173	cur = newcnt; \	226	cur = newcnt; \
174	}	227	}
175		228
176	/*****************************************************************************/	229	/*****************************************************************************/
177		230
178	typedef struct
179	{
180	struct ev_io *head;
181	unsigned char events;
182	unsigned char reify;
183	} ANFD;
184
185	static ANFD *anfds;
186	static int anfdmax;
187
188	static void	231	static void
189	anfds_init (ANFD *base, int count)	232	anfds_init (ANFD *base, int count)
190	{	233	{
191	while (count--)	234	while (count--)
192	{	235	{
…		…
196		239
197	++base;	240	++base;
198	}	241	}
199	}	242	}
200		243
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	244	static void
211	event (W w, int events)	245	event (EV_P_ W w, int events)
212	{	246	{
213	if (w->pending)	247	if (w->pending)
214	{	248	{
215	pendings [ABSPRI (w)][w->pending - 1].events |= events;	249	pendings [ABSPRI (w)][w->pending - 1].events |= events;
216	return;	250	return;
…		…
221	pendings [ABSPRI (w)][w->pending - 1].w = w;	255	pendings [ABSPRI (w)][w->pending - 1].w = w;
222	pendings [ABSPRI (w)][w->pending - 1].events = events;	256	pendings [ABSPRI (w)][w->pending - 1].events = events;
223	}	257	}
224		258
225	static void	259	static void
226	queue_events (W *events, int eventcnt, int type)	260	queue_events (EV_P_ W *events, int eventcnt, int type)
227	{	261	{
228	int i;	262	int i;
229		263
230	for (i = 0; i < eventcnt; ++i)	264	for (i = 0; i < eventcnt; ++i)
231	event (events [i], type);	265	event (EV_A_ events [i], type);
232	}	266	}
233		267
234	static void	268	static void
235	fd_event (int fd, int events)	269	fd_event (EV_P_ int fd, int events)
236	{	270	{
237	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
238	struct ev_io *w;	272	struct ev_io *w;
239		273
240	for (w = anfd->head; w; w = w->next)	274	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
241	{	275	{
242	int ev = w->events & events;	276	int ev = w->events & events;
243		277
244	if (ev)	278	if (ev)
245	event ((W)w, ev);	279	event (EV_A_ (W)w, ev);
246	}	280	}
247	}	281	}
248		282
249	/*****************************************************************************/	283	/*****************************************************************************/
250		284
251	static int *fdchanges;
252	static int fdchangemax, fdchangecnt;
253
254	static void	285	static void
255	fd_reify (void)	286	fd_reify (EV_P)
256	{	287	{
257	int i;	288	int i;
258		289
259	for (i = 0; i < fdchangecnt; ++i)	290	for (i = 0; i < fdchangecnt; ++i)
260	{	291	{
…		…
262	ANFD *anfd = anfds + fd;	293	ANFD *anfd = anfds + fd;
263	struct ev_io *w;	294	struct ev_io *w;
264		295
265	int events = 0;	296	int events = 0;
266		297
267	for (w = anfd->head; w; w = w->next)	298	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
268	events |= w->events;	299	events |= w->events;
269		300
270	anfd->reify = 0;	301	anfd->reify = 0;
271		302
272	if (anfd->events != events)	303	if (anfd->events != events)
273	{	304	{
274	method_modify (fd, anfd->events, events);	305	method_modify (EV_A_ fd, anfd->events, events);
275	anfd->events = events;	306	anfd->events = events;
276	}	307	}
277	}	308	}
278		309
279	fdchangecnt = 0;	310	fdchangecnt = 0;
280	}	311	}
281		312
282	static void	313	static void
283	fd_change (int fd)	314	fd_change (EV_P_ int fd)
284	{	315	{
285	if (anfds [fd].reify || fdchangecnt < 0)	316	if (anfds [fd].reify || fdchangecnt < 0)
286	return;	317	return;
287		318
288	anfds [fd].reify = 1;	319	anfds [fd].reify = 1;
…		…
291	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
292	fdchanges [fdchangecnt - 1] = fd;	323	fdchanges [fdchangecnt - 1] = fd;
293	}	324	}
294		325
295	static void	326	static void
296	fd_kill (int fd)	327	fd_kill (EV_P_ int fd)
297	{	328	{
298	struct ev_io *w;	329	struct ev_io *w;
299		330
300	printf ("killing fd %d\n", fd);//D
301	while ((w = anfds [fd].head))	331	while ((w = (struct ev_io *)anfds [fd].head))
302	{	332	{
303	ev_io_stop (w);	333	ev_io_stop (EV_A_ w);
304	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	334	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
305	}	335	}
306	}	336	}
307		337
308	/* called on EBADF to verify fds */	338	/* called on EBADF to verify fds */
309	static void	339	static void
310	fd_ebadf (void)	340	fd_ebadf (EV_P)
311	{	341	{
312	int fd;	342	int fd;
313		343
314	for (fd = 0; fd < anfdmax; ++fd)	344	for (fd = 0; fd < anfdmax; ++fd)
315	if (anfds [fd].events)	345	if (anfds [fd].events)
316	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
317	fd_kill (fd);	347	fd_kill (EV_A_ fd);
318	}	348	}
319		349
320	/* called on ENOMEM in select/poll to kill some fds and retry */	350	/* called on ENOMEM in select/poll to kill some fds and retry */
321	static void	351	static void
322	fd_enomem (void)	352	fd_enomem (EV_P)
323	{	353	{
324	int fd = anfdmax;	354	int fd = anfdmax;
325		355
326	while (fd--)	356	while (fd--)
327	if (anfds [fd].events)	357	if (anfds [fd].events)
328	{	358	{
329	close (fd);	359	close (fd);
330	fd_kill (fd);	360	fd_kill (EV_A_ fd);
331	return;	361	return;
332	}	362	}
333	}	363	}
334		364
		365	/* susually called after fork if method needs to re-arm all fds from scratch */
		366	static void
		367	fd_rearm_all (EV_P)
		368	{
		369	int fd;
		370
		371	/* this should be highly optimised to not do anything but set a flag */
		372	for (fd = 0; fd < anfdmax; ++fd)
		373	if (anfds [fd].events)
		374	{
		375	anfds [fd].events = 0;
		376	fd_change (EV_A_ fd);
		377	}
		378	}
		379
335	/*****************************************************************************/	380	/*****************************************************************************/
336		381
337	static struct ev_timer **timers;
338	static int timermax, timercnt;
339
340	static struct ev_periodic **periodics;
341	static int periodicmax, periodiccnt;
342
343	static void	382	static void
344	upheap (WT *timers, int k)	383	upheap (WT *heap, int k)
345	{	384	{
346	WT w = timers [k];	385	WT w = heap [k];
347		386
348	while (k && timers [k >> 1]->at > w->at)	387	while (k && heap [k >> 1]->at > w->at)
349	{	388	{
350	timers [k] = timers [k >> 1];	389	heap [k] = heap [k >> 1];
351	timers [k]->active = k + 1;	390	heap [k]->active = k + 1;
352	k >>= 1;	391	k >>= 1;
353	}	392	}
354		393
355	timers [k] = w;	394	heap [k] = w;
356	timers [k]->active = k + 1;	395	heap [k]->active = k + 1;
357		396
358	}	397	}
359		398
360	static void	399	static void
361	downheap (WT *timers, int N, int k)	400	downheap (WT *heap, int N, int k)
362	{	401	{
363	WT w = timers [k];	402	WT w = heap [k];
364		403
365	while (k < (N >> 1))	404	while (k < (N >> 1))
366	{	405	{
367	int j = k << 1;	406	int j = k << 1;
368		407
369	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	408	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
370	++j;	409	++j;
371		410
372	if (w->at <= timers [j]->at)	411	if (w->at <= heap [j]->at)
373	break;	412	break;
374		413
375	timers [k] = timers [j];	414	heap [k] = heap [j];
376	timers [k]->active = k + 1;	415	heap [k]->active = k + 1;
377	k = j;	416	k = j;
378	}	417	}
379		418
380	timers [k] = w;	419	heap [k] = w;
381	timers [k]->active = k + 1;	420	heap [k]->active = k + 1;
382	}	421	}
383		422
384	/*****************************************************************************/	423	/*****************************************************************************/
385		424
386	typedef struct	425	typedef struct
387	{	426	{
388	struct ev_signal *head;	427	struct ev_watcher_list *head;
389	sig_atomic_t volatile gotsig;	428	sig_atomic_t volatile gotsig;
390	} ANSIG;	429	} ANSIG;
391		430
392	static ANSIG *signals;	431	static ANSIG *signals;
393	static int signalmax;	432	static int signalmax;
…		…
413	{	452	{
414	signals [signum - 1].gotsig = 1;	453	signals [signum - 1].gotsig = 1;
415		454
416	if (!gotsig)	455	if (!gotsig)
417	{	456	{
		457	int old_errno = errno;
418	gotsig = 1;	458	gotsig = 1;
419	write (sigpipe [1], &signum, 1);	459	write (sigpipe [1], &signum, 1);
		460	errno = old_errno;
420	}	461	}
421	}	462	}
422		463
423	static void	464	static void
424	sigcb (struct ev_io *iow, int revents)	465	sigcb (EV_P_ struct ev_io *iow, int revents)
425	{	466	{
426	struct ev_signal *w;	467	struct ev_watcher_list *w;
427	int signum;	468	int signum;
428		469
429	read (sigpipe [0], &revents, 1);	470	read (sigpipe [0], &revents, 1);
430	gotsig = 0;	471	gotsig = 0;
431		472
…		…
433	if (signals [signum].gotsig)	474	if (signals [signum].gotsig)
434	{	475	{
435	signals [signum].gotsig = 0;	476	signals [signum].gotsig = 0;
436		477
437	for (w = signals [signum].head; w; w = w->next)	478	for (w = signals [signum].head; w; w = w->next)
438	event ((W)w, EV_SIGNAL);	479	event (EV_A_ (W)w, EV_SIGNAL);
439	}	480	}
440	}	481	}
441		482
442	static void	483	static void
443	siginit (void)	484	siginit (EV_P)
444	{	485	{
445	#ifndef WIN32	486	#ifndef WIN32
446	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
447	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
448		489
…		…
450	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
451	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
452	#endif	493	#endif
453		494
454	ev_io_set (&sigev, sigpipe [0], EV_READ);	495	ev_io_set (&sigev, sigpipe [0], EV_READ);
455	ev_io_start (&sigev);	496	ev_io_start (EV_A_ &sigev);
		497	ev_unref (EV_A); /* child watcher should not keep loop alive */
456	}	498	}
457		499
458	/*****************************************************************************/	500	/*****************************************************************************/
459		501
460	static struct ev_idle **idles;	502	#ifndef WIN32
461	static int idlemax, idlecnt;
462
463	static struct ev_prepare **prepares;
464	static int preparemax, preparecnt;
465
466	static struct ev_check **checks;
467	static int checkmax, checkcnt;
468
469	/*****************************************************************************/
470		503
471	static struct ev_child *childs [PID_HASHSIZE];	504	static struct ev_child *childs [PID_HASHSIZE];
472	static struct ev_signal childev;	505	static struct ev_signal childev;
473		506
474	#ifndef WIN32
475
476	#ifndef WCONTINUED	507	#ifndef WCONTINUED
477	# define WCONTINUED 0	508	# define WCONTINUED 0
478	#endif	509	#endif
479		510
480	static void	511	static void
481	childcb (struct ev_signal *sw, int revents)	512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
482	{	513	{
483	struct ev_child *w;	514	struct ev_child *w;
		515
		516	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		517	if (w->pid == pid || !w->pid)
		518	{
		519	w->priority = sw->priority; /* need to do it *now* */
		520	w->rpid = pid;
		521	w->rstatus = status;
		522	event (EV_A_ (W)w, EV_CHILD);
		523	}
		524	}
		525
		526	static void
		527	childcb (EV_P_ struct ev_signal *sw, int revents)
		528	{
484	int pid, status;	529	int pid, status;
485		530
486	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	531	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
487	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	532	{
488	if (w->pid == pid || !w->pid)	533	/* make sure we are called again until all childs have been reaped */
489	{	534	event (EV_A_ (W)sw, EV_SIGNAL);
490	w->status = status;	535
491	event ((W)w, EV_CHILD);	536	child_reap (EV_A_ sw, pid, pid, status);
492	}	537	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		538	}
493	}	539	}
494		540
495	#endif	541	#endif
496		542
497	/*****************************************************************************/	543	/*****************************************************************************/
…		…
519	ev_version_minor (void)	565	ev_version_minor (void)
520	{	566	{
521	return EV_VERSION_MINOR;	567	return EV_VERSION_MINOR;
522	}	568	}
523		569
524	/* return true if we are running with elevated privileges and ignore env variables */	570	/* return true if we are running with elevated privileges and should ignore env variables */
525	static int	571	static int
526	enable_secure ()	572	enable_secure (void)
527	{	573	{
		574	#ifdef WIN32
		575	return 0;
		576	#else
528	return getuid () != geteuid ()	577	return getuid () != geteuid ()
529	|| getgid () != getegid ();	578	|| getgid () != getegid ();
		579	#endif
530	}	580	}
531		581
532	int ev_init (int methods)	582	int
		583	ev_method (EV_P)
533	{	584	{
		585	return method;
		586	}
		587
		588	static void
		589	loop_init (EV_P_ int methods)
		590	{
534	if (!ev_method)	591	if (!method)
535	{	592	{
536	#if EV_USE_MONOTONIC	593	#if EV_USE_MONOTONIC
537	{	594	{
538	struct timespec ts;	595	struct timespec ts;
539	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
540	have_monotonic = 1;	597	have_monotonic = 1;
541	}	598	}
542	#endif	599	#endif
543		600
544	ev_now = ev_time ();	601	rt_now = ev_time ();
545	now = get_clock ();	602	mn_now = get_clock ();
546	now_floor = now;	603	now_floor = mn_now;
547	diff = ev_now - now;	604	rtmn_diff = rt_now - mn_now;
548
549	if (pipe (sigpipe))
550	return 0;
551		605
552	if (methods == EVMETHOD_AUTO)	606	if (methods == EVMETHOD_AUTO)
553	if (!enable_secure () && getenv ("LIBEV_METHODS"))	607	if (!enable_secure () && getenv ("LIBEV_METHODS"))
554	methods = atoi (getenv ("LIBEV_METHODS"));	608	methods = atoi (getenv ("LIBEV_METHODS"));
555	else	609	else
556	methods = EVMETHOD_ANY;	610	methods = EVMETHOD_ANY;
557		611
558	ev_method = 0;	612	method = 0;
559	#if EV_USE_KQUEUE	613	#if EV_USE_KQUEUE
560	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
561	#endif	615	#endif
562	#if EV_USE_EPOLL	616	#if EV_USE_EPOLL
563	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
564	#endif	618	#endif
565	#if EV_USE_POLL	619	#if EV_USE_POLL
566	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
567	#endif	621	#endif
568	#if EV_USE_SELECT	622	#if EV_USE_SELECT
569	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
570	#endif	624	#endif
		625	}
		626	}
571		627
		628	void
		629	loop_destroy (EV_P)
		630	{
		631	#if EV_USE_KQUEUE
		632	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		633	#endif
		634	#if EV_USE_EPOLL
		635	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		636	#endif
		637	#if EV_USE_POLL
		638	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		639	#endif
		640	#if EV_USE_SELECT
		641	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		642	#endif
		643
		644	method = 0;
		645	/*TODO*/
		646	}
		647
		648	void
		649	loop_fork (EV_P)
		650	{
		651	/*TODO*/
		652	#if EV_USE_EPOLL
		653	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		654	#endif
		655	#if EV_USE_KQUEUE
		656	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		657	#endif
		658	}
		659
		660	#if EV_MULTIPLICITY
		661	struct ev_loop *
		662	ev_loop_new (int methods)
		663	{
		664	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		665
		666	loop_init (EV_A_ methods);
		667
		668	if (ev_method (EV_A))
		669	return loop;
		670
		671	return 0;
		672	}
		673
		674	void
		675	ev_loop_destroy (EV_P)
		676	{
		677	loop_destroy (EV_A);
		678	free (loop);
		679	}
		680
		681	void
		682	ev_loop_fork (EV_P)
		683	{
		684	loop_fork (EV_A);
		685	}
		686
		687	#endif
		688
		689	#if EV_MULTIPLICITY
		690	struct ev_loop default_loop_struct;
		691	static struct ev_loop *default_loop;
		692
		693	struct ev_loop *
		694	#else
		695	static int default_loop;
		696
		697	int
		698	#endif
		699	ev_default_loop (int methods)
		700	{
		701	if (sigpipe [0] == sigpipe [1])
		702	if (pipe (sigpipe))
		703	return 0;
		704
		705	if (!default_loop)
		706	{
		707	#if EV_MULTIPLICITY
		708	struct ev_loop *loop = default_loop = &default_loop_struct;
		709	#else
		710	default_loop = 1;
		711	#endif
		712
		713	loop_init (EV_A_ methods);
		714
572	if (ev_method)	715	if (ev_method (EV_A))
573	{	716	{
574	ev_watcher_init (&sigev, sigcb);	717	ev_watcher_init (&sigev, sigcb);
		718	ev_set_priority (&sigev, EV_MAXPRI);
575	siginit ();	719	siginit (EV_A);
576		720
577	#ifndef WIN32	721	#ifndef WIN32
578	ev_signal_init (&childev, childcb, SIGCHLD);	722	ev_signal_init (&childev, childcb, SIGCHLD);
		723	ev_set_priority (&childev, EV_MAXPRI);
579	ev_signal_start (&childev);	724	ev_signal_start (EV_A_ &childev);
		725	ev_unref (EV_A); /* child watcher should not keep loop alive */
580	#endif	726	#endif
581	}	727	}
		728	else
		729	default_loop = 0;
582	}	730	}
583		731
584	return ev_method;	732	return default_loop;
585	}	733	}
586		734
587	/*****************************************************************************/
588
589	void	735	void
590	ev_fork_prepare (void)	736	ev_default_destroy (void)
591	{	737	{
592	/* nop */	738	#if EV_MULTIPLICITY
593	}	739	struct ev_loop *loop = default_loop;
594
595	void
596	ev_fork_parent (void)
597	{
598	/* nop */
599	}
600
601	void
602	ev_fork_child (void)
603	{
604	#if EV_USE_EPOLL
605	if (ev_method == EVMETHOD_EPOLL)
606	epoll_postfork_child ();
607	#endif	740	#endif
608		741
		742	ev_ref (EV_A); /* child watcher */
		743	ev_signal_stop (EV_A_ &childev);
		744
		745	ev_ref (EV_A); /* signal watcher */
609	ev_io_stop (&sigev);	746	ev_io_stop (EV_A_ &sigev);
		747
		748	close (sigpipe [0]); sigpipe [0] = 0;
		749	close (sigpipe [1]); sigpipe [1] = 0;
		750
		751	loop_destroy (EV_A);
		752	}
		753
		754	void
		755	ev_default_fork (void)
		756	{
		757	#if EV_MULTIPLICITY
		758	struct ev_loop *loop = default_loop;
		759	#endif
		760
		761	loop_fork (EV_A);
		762
		763	ev_io_stop (EV_A_ &sigev);
610	close (sigpipe [0]);	764	close (sigpipe [0]);
611	close (sigpipe [1]);	765	close (sigpipe [1]);
612	pipe (sigpipe);	766	pipe (sigpipe);
		767
		768	ev_ref (EV_A); /* signal watcher */
613	siginit ();	769	siginit (EV_A);
614	}	770	}
615		771
616	/*****************************************************************************/	772	/*****************************************************************************/
617		773
618	static void	774	static void
619	call_pending (void)	775	call_pending (EV_P)
620	{	776	{
621	int pri;	777	int pri;
622		778
623	for (pri = NUMPRI; pri--; )	779	for (pri = NUMPRI; pri--; )
624	while (pendingcnt [pri])	780	while (pendingcnt [pri])
…		…
626	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
627		783
628	if (p->w)	784	if (p->w)
629	{	785	{
630	p->w->pending = 0;	786	p->w->pending = 0;
631	p->w->cb (p->w, p->events);	787	p->w->cb (EV_A_ p->w, p->events);
632	}	788	}
633	}	789	}
634	}	790	}
635		791
636	static void	792	static void
637	timers_reify (void)	793	timers_reify (EV_P)
638	{	794	{
639	while (timercnt && timers [0]->at <= now)	795	while (timercnt && timers [0]->at <= mn_now)
640	{	796	{
641	struct ev_timer *w = timers [0];	797	struct ev_timer *w = timers [0];
642		798
643	/* first reschedule or stop timer */	799	/* first reschedule or stop timer */
644	if (w->repeat)	800	if (w->repeat)
645	{	801	{
646	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	802	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
647	w->at = now + w->repeat;	803	w->at = mn_now + w->repeat;
648	downheap ((WT *)timers, timercnt, 0);	804	downheap ((WT *)timers, timercnt, 0);
649	}	805	}
650	else	806	else
651	ev_timer_stop (w); /* nonrepeating: stop timer */	807	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
652		808
653	event ((W)w, EV_TIMEOUT);	809	event (EV_A_ (W)w, EV_TIMEOUT);
654	}	810	}
655	}	811	}
656		812
657	static void	813	static void
658	periodics_reify (void)	814	periodics_reify (EV_P)
659	{	815	{
660	while (periodiccnt && periodics [0]->at <= ev_now)	816	while (periodiccnt && periodics [0]->at <= rt_now)
661	{	817	{
662	struct ev_periodic *w = periodics [0];	818	struct ev_periodic *w = periodics [0];
663		819
664	/* first reschedule or stop timer */	820	/* first reschedule or stop timer */
665	if (w->interval)	821	if (w->interval)
666	{	822	{
667	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	823	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
668	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	824	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
669	downheap ((WT *)periodics, periodiccnt, 0);	825	downheap ((WT *)periodics, periodiccnt, 0);
670	}	826	}
671	else	827	else
672	ev_periodic_stop (w); /* nonrepeating: stop timer */	828	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
673		829
674	event ((W)w, EV_PERIODIC);	830	event (EV_A_ (W)w, EV_PERIODIC);
675	}	831	}
676	}	832	}
677		833
678	static void	834	static void
679	periodics_reschedule (ev_tstamp diff)	835	periodics_reschedule (EV_P)
680	{	836	{
681	int i;	837	int i;
682		838
683	/* adjust periodics after time jump */	839	/* adjust periodics after time jump */
684	for (i = 0; i < periodiccnt; ++i)	840	for (i = 0; i < periodiccnt; ++i)
685	{	841	{
686	struct ev_periodic *w = periodics [i];	842	struct ev_periodic *w = periodics [i];
687		843
688	if (w->interval)	844	if (w->interval)
689	{	845	{
690	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	846	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
691		847
692	if (fabs (diff) >= 1e-4)	848	if (fabs (diff) >= 1e-4)
693	{	849	{
694	ev_periodic_stop (w);	850	ev_periodic_stop (EV_A_ w);
695	ev_periodic_start (w);	851	ev_periodic_start (EV_A_ w);
696		852
697	i = 0; /* restart loop, inefficient, but time jumps should be rare */	853	i = 0; /* restart loop, inefficient, but time jumps should be rare */
698	}	854	}
699	}	855	}
700	}	856	}
701	}	857	}
702		858
703	static int	859	inline int
704	time_update_monotonic (void)	860	time_update_monotonic (EV_P)
705	{	861	{
706	now = get_clock ();	862	mn_now = get_clock ();
707		863
708	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	864	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
709	{	865	{
710	ev_now = now + diff;	866	rt_now = rtmn_diff + mn_now;
711	return 0;	867	return 0;
712	}	868	}
713	else	869	else
714	{	870	{
715	now_floor = now;	871	now_floor = mn_now;
716	ev_now = ev_time ();	872	rt_now = ev_time ();
717	return 1;	873	return 1;
718	}	874	}
719	}	875	}
720		876
721	static void	877	static void
722	time_update (void)	878	time_update (EV_P)
723	{	879	{
724	int i;	880	int i;
725		881
726	#if EV_USE_MONOTONIC	882	#if EV_USE_MONOTONIC
727	if (expect_true (have_monotonic))	883	if (expect_true (have_monotonic))
728	{	884	{
729	if (time_update_monotonic ())	885	if (time_update_monotonic (EV_A))
730	{	886	{
731	ev_tstamp odiff = diff;	887	ev_tstamp odiff = rtmn_diff;
732		888
733	for (i = 4; --i; ) /* loop a few times, before making important decisions */	889	for (i = 4; --i; ) /* loop a few times, before making important decisions */
734	{	890	{
735	diff = ev_now - now;	891	rtmn_diff = rt_now - mn_now;
736		892
737	if (fabs (odiff - diff) < MIN_TIMEJUMP)	893	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
738	return; /* all is well */	894	return; /* all is well */
739		895
740	ev_now = ev_time ();	896	rt_now = ev_time ();
741	now = get_clock ();	897	mn_now = get_clock ();
742	now_floor = now;	898	now_floor = mn_now;
743	}	899	}
744		900
745	periodics_reschedule (diff - odiff);	901	periodics_reschedule (EV_A);
746	/* no timer adjustment, as the monotonic clock doesn't jump */	902	/* no timer adjustment, as the monotonic clock doesn't jump */
		903	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
747	}	904	}
748	}	905	}
749	else	906	else
750	#endif	907	#endif
751	{	908	{
752	ev_now = ev_time ();	909	rt_now = ev_time ();
753		910
754	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	911	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
755	{	912	{
756	periodics_reschedule (ev_now - now);	913	periodics_reschedule (EV_A);
757		914
758	/* adjust timers. this is easy, as the offset is the same for all */	915	/* adjust timers. this is easy, as the offset is the same for all */
759	for (i = 0; i < timercnt; ++i)	916	for (i = 0; i < timercnt; ++i)
760	timers [i]->at += diff;	917	timers [i]->at += rt_now - mn_now;
761	}	918	}
762		919
763	now = ev_now;	920	mn_now = rt_now;
764	}	921	}
765	}	922	}
766		923
767	int ev_loop_done;	924	void
		925	ev_ref (EV_P)
		926	{
		927	++activecnt;
		928	}
768		929
		930	void
		931	ev_unref (EV_P)
		932	{
		933	--activecnt;
		934	}
		935
		936	static int loop_done;
		937
		938	void
769	void ev_loop (int flags)	939	ev_loop (EV_P_ int flags)
770	{	940	{
771	double block;	941	double block;
772	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	942	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
773		943
774	do	944	do
775	{	945	{
776	/* queue check watchers (and execute them) */	946	/* queue check watchers (and execute them) */
777	if (expect_false (preparecnt))	947	if (expect_false (preparecnt))
778	{	948	{
779	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	949	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
780	call_pending ();	950	call_pending (EV_A);
781	}	951	}
782		952
783	/* update fd-related kernel structures */	953	/* update fd-related kernel structures */
784	fd_reify ();	954	fd_reify (EV_A);
785		955
786	/* calculate blocking time */	956	/* calculate blocking time */
787		957
788	/* we only need this for !monotonic clockor timers, but as we basically	958	/* we only need this for !monotonic clockor timers, but as we basically
789	always have timers, we just calculate it always */	959	always have timers, we just calculate it always */
790	#if EV_USE_MONOTONIC	960	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	961	if (expect_true (have_monotonic))
792	time_update_monotonic ();	962	time_update_monotonic (EV_A);
793	else	963	else
794	#endif	964	#endif
795	{	965	{
796	ev_now = ev_time ();	966	rt_now = ev_time ();
797	now = ev_now;	967	mn_now = rt_now;
798	}	968	}
799		969
800	if (flags & EVLOOP_NONBLOCK || idlecnt)	970	if (flags & EVLOOP_NONBLOCK || idlecnt)
801	block = 0.;	971	block = 0.;
802	else	972	else
803	{	973	{
804	block = MAX_BLOCKTIME;	974	block = MAX_BLOCKTIME;
805		975
806	if (timercnt)	976	if (timercnt)
807	{	977	{
808	ev_tstamp to = timers [0]->at - now + method_fudge;	978	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
809	if (block > to) block = to;	979	if (block > to) block = to;
810	}	980	}
811		981
812	if (periodiccnt)	982	if (periodiccnt)
813	{	983	{
814	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	984	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
815	if (block > to) block = to;	985	if (block > to) block = to;
816	}	986	}
817		987
818	if (block < 0.) block = 0.;	988	if (block < 0.) block = 0.;
819	}	989	}
820		990
821	method_poll (block);	991	method_poll (EV_A_ block);
822		992
823	/* update ev_now, do magic */	993	/* update rt_now, do magic */
824	time_update ();	994	time_update (EV_A);
825		995
826	/* queue pending timers and reschedule them */	996	/* queue pending timers and reschedule them */
827	timers_reify (); /* relative timers called last */	997	timers_reify (EV_A); /* relative timers called last */
828	periodics_reify (); /* absolute timers called first */	998	periodics_reify (EV_A); /* absolute timers called first */
829		999
830	/* queue idle watchers unless io or timers are pending */	1000	/* queue idle watchers unless io or timers are pending */
831	if (!pendingcnt)	1001	if (!pendingcnt)
832	queue_events ((W *)idles, idlecnt, EV_IDLE);	1002	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
833		1003
834	/* queue check watchers, to be executed first */	1004	/* queue check watchers, to be executed first */
835	if (checkcnt)	1005	if (checkcnt)
836	queue_events ((W *)checks, checkcnt, EV_CHECK);	1006	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
837		1007
838	call_pending ();	1008	call_pending (EV_A);
839	}	1009	}
840	while (!ev_loop_done);	1010	while (activecnt && !loop_done);
841		1011
842	if (ev_loop_done != 2)	1012	if (loop_done != 2)
843	ev_loop_done = 0;	1013	loop_done = 0;
		1014	}
		1015
		1016	void
		1017	ev_unloop (EV_P_ int how)
		1018	{
		1019	loop_done = how;
844	}	1020	}
845		1021
846	/*****************************************************************************/	1022	/*****************************************************************************/
847		1023
848	static void	1024	inline void
849	wlist_add (WL *head, WL elem)	1025	wlist_add (WL *head, WL elem)
850	{	1026	{
851	elem->next = *head;	1027	elem->next = *head;
852	*head = elem;	1028	*head = elem;
853	}	1029	}
854		1030
855	static void	1031	inline void
856	wlist_del (WL *head, WL elem)	1032	wlist_del (WL *head, WL elem)
857	{	1033	{
858	while (*head)	1034	while (*head)
859	{	1035	{
860	if (*head == elem)	1036	if (*head == elem)
…		…
865		1041
866	head = &(*head)->next;	1042	head = &(*head)->next;
867	}	1043	}
868	}	1044	}
869		1045
870	static void	1046	inline void
871	ev_clear_pending (W w)	1047	ev_clear_pending (EV_P_ W w)
872	{	1048	{
873	if (w->pending)	1049	if (w->pending)
874	{	1050	{
875	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1051	pendings [ABSPRI (w)][w->pending - 1].w = 0;
876	w->pending = 0;	1052	w->pending = 0;
877	}	1053	}
878	}	1054	}
879		1055
880	static void	1056	inline void
881	ev_start (W w, int active)	1057	ev_start (EV_P_ W w, int active)
882	{	1058	{
883	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1059	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
884	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1060	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
885		1061
886	w->active = active;	1062	w->active = active;
		1063	ev_ref (EV_A);
887	}	1064	}
888		1065
889	static void	1066	inline void
890	ev_stop (W w)	1067	ev_stop (EV_P_ W w)
891	{	1068	{
		1069	ev_unref (EV_A);
892	w->active = 0;	1070	w->active = 0;
893	}	1071	}
894		1072
895	/*****************************************************************************/	1073	/*****************************************************************************/
896		1074
897	void	1075	void
898	ev_io_start (struct ev_io *w)	1076	ev_io_start (EV_P_ struct ev_io *w)
899	{	1077	{
900	int fd = w->fd;	1078	int fd = w->fd;
901		1079
902	if (ev_is_active (w))	1080	if (ev_is_active (w))
903	return;	1081	return;
904		1082
905	assert (("ev_io_start called with negative fd", fd >= 0));	1083	assert (("ev_io_start called with negative fd", fd >= 0));
906		1084
907	ev_start ((W)w, 1);	1085	ev_start (EV_A_ (W)w, 1);
908	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1086	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
909	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1087	wlist_add ((WL *)&anfds[fd].head, (WL)w);
910		1088
911	fd_change (fd);	1089	fd_change (EV_A_ fd);
912	}	1090	}
913		1091
914	void	1092	void
915	ev_io_stop (struct ev_io *w)	1093	ev_io_stop (EV_P_ struct ev_io *w)
916	{	1094	{
917	ev_clear_pending ((W)w);	1095	ev_clear_pending (EV_A_ (W)w);
918	if (!ev_is_active (w))	1096	if (!ev_is_active (w))
919	return;	1097	return;
920		1098
921	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1099	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
922	ev_stop ((W)w);	1100	ev_stop (EV_A_ (W)w);
923		1101
924	fd_change (w->fd);	1102	fd_change (EV_A_ w->fd);
925	}	1103	}
926		1104
927	void	1105	void
928	ev_timer_start (struct ev_timer *w)	1106	ev_timer_start (EV_P_ struct ev_timer *w)
929	{	1107	{
930	if (ev_is_active (w))	1108	if (ev_is_active (w))
931	return;	1109	return;
932		1110
933	w->at += now;	1111	w->at += mn_now;
934		1112
935	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1113	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
936		1114
937	ev_start ((W)w, ++timercnt);	1115	ev_start (EV_A_ (W)w, ++timercnt);
938	array_needsize (timers, timermax, timercnt, );	1116	array_needsize (timers, timermax, timercnt, );
939	timers [timercnt - 1] = w;	1117	timers [timercnt - 1] = w;
940	upheap ((WT *)timers, timercnt - 1);	1118	upheap ((WT *)timers, timercnt - 1);
941	}	1119	}
942		1120
943	void	1121	void
944	ev_timer_stop (struct ev_timer *w)	1122	ev_timer_stop (EV_P_ struct ev_timer *w)
945	{	1123	{
946	ev_clear_pending ((W)w);	1124	ev_clear_pending (EV_A_ (W)w);
947	if (!ev_is_active (w))	1125	if (!ev_is_active (w))
948	return;	1126	return;
949		1127
950	if (w->active < timercnt--)	1128	if (w->active < timercnt--)
951	{	1129	{
…		…
953	downheap ((WT *)timers, timercnt, w->active - 1);	1131	downheap ((WT *)timers, timercnt, w->active - 1);
954	}	1132	}
955		1133
956	w->at = w->repeat;	1134	w->at = w->repeat;
957		1135
958	ev_stop ((W)w);	1136	ev_stop (EV_A_ (W)w);
959	}	1137	}
960		1138
961	void	1139	void
962	ev_timer_again (struct ev_timer *w)	1140	ev_timer_again (EV_P_ struct ev_timer *w)
963	{	1141	{
964	if (ev_is_active (w))	1142	if (ev_is_active (w))
965	{	1143	{
966	if (w->repeat)	1144	if (w->repeat)
967	{	1145	{
968	w->at = now + w->repeat;	1146	w->at = mn_now + w->repeat;
969	downheap ((WT *)timers, timercnt, w->active - 1);	1147	downheap ((WT *)timers, timercnt, w->active - 1);
970	}	1148	}
971	else	1149	else
972	ev_timer_stop (w);	1150	ev_timer_stop (EV_A_ w);
973	}	1151	}
974	else if (w->repeat)	1152	else if (w->repeat)
975	ev_timer_start (w);	1153	ev_timer_start (EV_A_ w);
976	}	1154	}
977		1155
978	void	1156	void
979	ev_periodic_start (struct ev_periodic *w)	1157	ev_periodic_start (EV_P_ struct ev_periodic *w)
980	{	1158	{
981	if (ev_is_active (w))	1159	if (ev_is_active (w))
982	return;	1160	return;
983		1161
984	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1162	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
985		1163
986	/* this formula differs from the one in periodic_reify because we do not always round up */	1164	/* this formula differs from the one in periodic_reify because we do not always round up */
987	if (w->interval)	1165	if (w->interval)
988	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1166	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
989		1167
990	ev_start ((W)w, ++periodiccnt);	1168	ev_start (EV_A_ (W)w, ++periodiccnt);
991	array_needsize (periodics, periodicmax, periodiccnt, );	1169	array_needsize (periodics, periodicmax, periodiccnt, );
992	periodics [periodiccnt - 1] = w;	1170	periodics [periodiccnt - 1] = w;
993	upheap ((WT *)periodics, periodiccnt - 1);	1171	upheap ((WT *)periodics, periodiccnt - 1);
994	}	1172	}
995		1173
996	void	1174	void
997	ev_periodic_stop (struct ev_periodic *w)	1175	ev_periodic_stop (EV_P_ struct ev_periodic *w)
998	{	1176	{
999	ev_clear_pending ((W)w);	1177	ev_clear_pending (EV_A_ (W)w);
1000	if (!ev_is_active (w))	1178	if (!ev_is_active (w))
1001	return;	1179	return;
1002		1180
1003	if (w->active < periodiccnt--)	1181	if (w->active < periodiccnt--)
1004	{	1182	{
1005	periodics [w->active - 1] = periodics [periodiccnt];	1183	periodics [w->active - 1] = periodics [periodiccnt];
1006	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1184	downheap ((WT *)periodics, periodiccnt, w->active - 1);
1007	}	1185	}
1008		1186
1009	ev_stop ((W)w);	1187	ev_stop (EV_A_ (W)w);
1010	}	1188	}
1011		1189
1012	void	1190	void
1013	ev_signal_start (struct ev_signal *w)	1191	ev_idle_start (EV_P_ struct ev_idle *w)
1014	{	1192	{
1015	if (ev_is_active (w))	1193	if (ev_is_active (w))
1016	return;	1194	return;
1017		1195
		1196	ev_start (EV_A_ (W)w, ++idlecnt);
		1197	array_needsize (idles, idlemax, idlecnt, );
		1198	idles [idlecnt - 1] = w;
		1199	}
		1200
		1201	void
		1202	ev_idle_stop (EV_P_ struct ev_idle *w)
		1203	{
		1204	ev_clear_pending (EV_A_ (W)w);
		1205	if (ev_is_active (w))
		1206	return;
		1207
		1208	idles [w->active - 1] = idles [--idlecnt];
		1209	ev_stop (EV_A_ (W)w);
		1210	}
		1211
		1212	void
		1213	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1214	{
		1215	if (ev_is_active (w))
		1216	return;
		1217
		1218	ev_start (EV_A_ (W)w, ++preparecnt);
		1219	array_needsize (prepares, preparemax, preparecnt, );
		1220	prepares [preparecnt - 1] = w;
		1221	}
		1222
		1223	void
		1224	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1225	{
		1226	ev_clear_pending (EV_A_ (W)w);
		1227	if (ev_is_active (w))
		1228	return;
		1229
		1230	prepares [w->active - 1] = prepares [--preparecnt];
		1231	ev_stop (EV_A_ (W)w);
		1232	}
		1233
		1234	void
		1235	ev_check_start (EV_P_ struct ev_check *w)
		1236	{
		1237	if (ev_is_active (w))
		1238	return;
		1239
		1240	ev_start (EV_A_ (W)w, ++checkcnt);
		1241	array_needsize (checks, checkmax, checkcnt, );
		1242	checks [checkcnt - 1] = w;
		1243	}
		1244
		1245	void
		1246	ev_check_stop (EV_P_ struct ev_check *w)
		1247	{
		1248	ev_clear_pending (EV_A_ (W)w);
		1249	if (ev_is_active (w))
		1250	return;
		1251
		1252	checks [w->active - 1] = checks [--checkcnt];
		1253	ev_stop (EV_A_ (W)w);
		1254	}
		1255
		1256	#ifndef SA_RESTART
		1257	# define SA_RESTART 0
		1258	#endif
		1259
		1260	void
		1261	ev_signal_start (EV_P_ struct ev_signal *w)
		1262	{
		1263	#if EV_MULTIPLICITY
		1264	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1265	#endif
		1266	if (ev_is_active (w))
		1267	return;
		1268
1018	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1269	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1019		1270
1020	ev_start ((W)w, 1);	1271	ev_start (EV_A_ (W)w, 1);
1021	array_needsize (signals, signalmax, w->signum, signals_init);	1272	array_needsize (signals, signalmax, w->signum, signals_init);
1022	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1273	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1023		1274
1024	if (!w->next)	1275	if (!w->next)
1025	{	1276	{
1026	struct sigaction sa;	1277	struct sigaction sa;
1027	sa.sa_handler = sighandler;	1278	sa.sa_handler = sighandler;
1028	sigfillset (&sa.sa_mask);	1279	sigfillset (&sa.sa_mask);
1029	sa.sa_flags = 0;	1280	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1030	sigaction (w->signum, &sa, 0);	1281	sigaction (w->signum, &sa, 0);
1031	}	1282	}
1032	}	1283	}
1033		1284
1034	void	1285	void
1035	ev_signal_stop (struct ev_signal *w)	1286	ev_signal_stop (EV_P_ struct ev_signal *w)
1036	{	1287	{
1037	ev_clear_pending ((W)w);	1288	ev_clear_pending (EV_A_ (W)w);
1038	if (!ev_is_active (w))	1289	if (!ev_is_active (w))
1039	return;	1290	return;
1040		1291
1041	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1292	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1042	ev_stop ((W)w);	1293	ev_stop (EV_A_ (W)w);
1043		1294
1044	if (!signals [w->signum - 1].head)	1295	if (!signals [w->signum - 1].head)
1045	signal (w->signum, SIG_DFL);	1296	signal (w->signum, SIG_DFL);
1046	}	1297	}
1047		1298
1048	void	1299	void
1049	ev_idle_start (struct ev_idle *w)	1300	ev_child_start (EV_P_ struct ev_child *w)
1050	{	1301	{
		1302	#if EV_MULTIPLICITY
		1303	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1304	#endif
1051	if (ev_is_active (w))	1305	if (ev_is_active (w))
1052	return;	1306	return;
1053		1307
1054	ev_start ((W)w, ++idlecnt);	1308	ev_start (EV_A_ (W)w, 1);
1055	array_needsize (idles, idlemax, idlecnt, );	1309	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1056	idles [idlecnt - 1] = w;
1057	}	1310	}
1058		1311
1059	void	1312	void
1060	ev_idle_stop (struct ev_idle *w)	1313	ev_child_stop (EV_P_ struct ev_child *w)
1061	{	1314	{
1062	ev_clear_pending ((W)w);	1315	ev_clear_pending (EV_A_ (W)w);
1063	if (ev_is_active (w))	1316	if (ev_is_active (w))
1064	return;	1317	return;
1065		1318
1066	idles [w->active - 1] = idles [--idlecnt];
1067	ev_stop ((W)w);
1068	}
1069
1070	void
1071	ev_prepare_start (struct ev_prepare *w)
1072	{
1073	if (ev_is_active (w))
1074	return;
1075
1076	ev_start ((W)w, ++preparecnt);
1077	array_needsize (prepares, preparemax, preparecnt, );
1078	prepares [preparecnt - 1] = w;
1079	}
1080
1081	void
1082	ev_prepare_stop (struct ev_prepare *w)
1083	{
1084	ev_clear_pending ((W)w);
1085	if (ev_is_active (w))
1086	return;
1087
1088	prepares [w->active - 1] = prepares [--preparecnt];
1089	ev_stop ((W)w);
1090	}
1091
1092	void
1093	ev_check_start (struct ev_check *w)
1094	{
1095	if (ev_is_active (w))
1096	return;
1097
1098	ev_start ((W)w, ++checkcnt);
1099	array_needsize (checks, checkmax, checkcnt, );
1100	checks [checkcnt - 1] = w;
1101	}
1102
1103	void
1104	ev_check_stop (struct ev_check *w)
1105	{
1106	ev_clear_pending ((W)w);
1107	if (ev_is_active (w))
1108	return;
1109
1110	checks [w->active - 1] = checks [--checkcnt];
1111	ev_stop ((W)w);
1112	}
1113
1114	void
1115	ev_child_start (struct ev_child *w)
1116	{
1117	if (ev_is_active (w))
1118	return;
1119
1120	ev_start ((W)w, 1);
1121	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1122	}
1123
1124	void
1125	ev_child_stop (struct ev_child *w)
1126	{
1127	ev_clear_pending ((W)w);
1128	if (ev_is_active (w))
1129	return;
1130
1131	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1319	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1132	ev_stop ((W)w);	1320	ev_stop (EV_A_ (W)w);
1133	}	1321	}
1134		1322
1135	/*****************************************************************************/	1323	/*****************************************************************************/
1136		1324
1137	struct ev_once	1325	struct ev_once
…		…
1141	void (*cb)(int revents, void *arg);	1329	void (*cb)(int revents, void *arg);
1142	void *arg;	1330	void *arg;
1143	};	1331	};
1144		1332
1145	static void	1333	static void
1146	once_cb (struct ev_once *once, int revents)	1334	once_cb (EV_P_ struct ev_once *once, int revents)
1147	{	1335	{
1148	void (*cb)(int revents, void *arg) = once->cb;	1336	void (*cb)(int revents, void *arg) = once->cb;
1149	void *arg = once->arg;	1337	void *arg = once->arg;
1150		1338
1151	ev_io_stop (&once->io);	1339	ev_io_stop (EV_A_ &once->io);
1152	ev_timer_stop (&once->to);	1340	ev_timer_stop (EV_A_ &once->to);
1153	free (once);	1341	free (once);
1154		1342
1155	cb (revents, arg);	1343	cb (revents, arg);
1156	}	1344	}
1157		1345
1158	static void	1346	static void
1159	once_cb_io (struct ev_io *w, int revents)	1347	once_cb_io (EV_P_ struct ev_io *w, int revents)
1160	{	1348	{
1161	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1349	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1162	}	1350	}
1163		1351
1164	static void	1352	static void
1165	once_cb_to (struct ev_timer *w, int revents)	1353	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1166	{	1354	{
1167	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1355	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1168	}	1356	}
1169		1357
1170	void	1358	void
1171	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1359	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1172	{	1360	{
1173	struct ev_once *once = malloc (sizeof (struct ev_once));	1361	struct ev_once *once = malloc (sizeof (struct ev_once));
1174		1362
1175	if (!once)	1363	if (!once)
1176	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1364	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1181		1369
1182	ev_watcher_init (&once->io, once_cb_io);	1370	ev_watcher_init (&once->io, once_cb_io);
1183	if (fd >= 0)	1371	if (fd >= 0)
1184	{	1372	{
1185	ev_io_set (&once->io, fd, events);	1373	ev_io_set (&once->io, fd, events);
1186	ev_io_start (&once->io);	1374	ev_io_start (EV_A_ &once->io);
1187	}	1375	}
1188		1376
1189	ev_watcher_init (&once->to, once_cb_to);	1377	ev_watcher_init (&once->to, once_cb_to);
1190	if (timeout >= 0.)	1378	if (timeout >= 0.)
1191	{	1379	{
1192	ev_timer_set (&once->to, timeout, 0.);	1380	ev_timer_set (&once->to, timeout, 0.);
1193	ev_timer_start (&once->to);	1381	ev_timer_start (EV_A_ &once->to);
1194	}	1382	}
1195	}	1383	}
1196	}	1384	}
1197		1385
1198	/*****************************************************************************/
1199
1200	#if 0
1201
1202	struct ev_io wio;
1203
1204	static void
1205	sin_cb (struct ev_io *w, int revents)
1206	{
1207	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1208	}
1209
1210	static void
1211	ocb (struct ev_timer *w, int revents)
1212	{
1213	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1214	ev_timer_stop (w);
1215	ev_timer_start (w);
1216	}
1217
1218	static void
1219	scb (struct ev_signal *w, int revents)
1220	{
1221	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1222	ev_io_stop (&wio);
1223	ev_io_start (&wio);
1224	}
1225
1226	static void
1227	gcb (struct ev_signal *w, int revents)
1228	{
1229	fprintf (stderr, "generic %x\n", revents);
1230
1231	}
1232
1233	int main (void)
1234	{
1235	ev_init (0);
1236
1237	ev_io_init (&wio, sin_cb, 0, EV_READ);
1238	ev_io_start (&wio);
1239
1240	struct ev_timer t[10000];
1241
1242	#if 0
1243	int i;
1244	for (i = 0; i < 10000; ++i)
1245	{
1246	struct ev_timer *w = t + i;
1247	ev_watcher_init (w, ocb, i);
1248	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1249	ev_timer_start (w);
1250	if (drand48 () < 0.5)
1251	ev_timer_stop (w);
1252	}
1253	#endif
1254
1255	struct ev_timer t1;
1256	ev_timer_init (&t1, ocb, 5, 10);
1257	ev_timer_start (&t1);
1258
1259	struct ev_signal sig;
1260	ev_signal_init (&sig, scb, SIGQUIT);
1261	ev_signal_start (&sig);
1262
1263	struct ev_check cw;
1264	ev_check_init (&cw, gcb);
1265	ev_check_start (&cw);
1266
1267	struct ev_idle iw;
1268	ev_idle_init (&iw, gcb);
1269	ev_idle_start (&iw);
1270
1271	ev_loop (0);
1272
1273	return 0;
1274	}
1275
1276	#endif
1277
1278
1279
1280

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