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Comparing libev/ev.c (file contents):
Revision 1.46 by root, Sat Nov 3 09:20:12 2007 UTC vs.
Revision 1.61 by root, Sun Nov 4 19:45:09 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
		33
		34	# if HAVE_CLOCK_GETTIME
		35	# define EV_USE_MONOTONIC 1
		36	# define EV_USE_REALTIME 1
		37	# endif
		38
		39	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		40	# define EV_USE_SELECT 1
		41	# endif
		42
		43	# if HAVE_POLL && HAVE_POLL_H
		44	# define EV_USE_POLL 1
		45	# endif
		46
		47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		48	# define EV_USE_EPOLL 1
		49	# endif
		50
		51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		52	# define EV_USE_KQUEUE 1
		53	# endif
		54
33	#endif	55	#endif
34		56
35	#include <math.h>	57	#include <math.h>
36	#include <stdlib.h>	58	#include <stdlib.h>
37	#include <unistd.h>	59	#include <unistd.h>
…		…
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->rpid = pid;	535
491	w->rstatus = status;	536	child_reap (EV_A_ sw, pid, pid, status);
492	event ((W)w, EV_CHILD);	537	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
493	}	538	}
494	}	539	}
495		540
496	#endif	541	#endif
497		542
498	/*****************************************************************************/	543	/*****************************************************************************/
…		…
520	ev_version_minor (void)	565	ev_version_minor (void)
521	{	566	{
522	return EV_VERSION_MINOR;	567	return EV_VERSION_MINOR;
523	}	568	}
524		569
525	/* 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 */
526	static int	571	static int
527	enable_secure ()	572	enable_secure (void)
528	{	573	{
		574	#ifdef WIN32
		575	return 0;
		576	#else
529	return getuid () != geteuid ()	577	return getuid () != geteuid ()
530	|| getgid () != getegid ();	578	|| getgid () != getegid ();
		579	#endif
531	}	580	}
532		581
533	int ev_init (int methods)	582	int
		583	ev_method (EV_P)
534	{	584	{
		585	return method;
		586	}
		587
		588	static void
		589	loop_init (EV_P_ int methods)
		590	{
535	if (!ev_method)	591	if (!method)
536	{	592	{
537	#if EV_USE_MONOTONIC	593	#if EV_USE_MONOTONIC
538	{	594	{
539	struct timespec ts;	595	struct timespec ts;
540	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
541	have_monotonic = 1;	597	have_monotonic = 1;
542	}	598	}
543	#endif	599	#endif
544		600
545	ev_now = ev_time ();	601	rt_now = ev_time ();
546	now = get_clock ();	602	mn_now = get_clock ();
547	now_floor = now;	603	now_floor = mn_now;
548	diff = ev_now - now;	604	rtmn_diff = rt_now - mn_now;
549
550	if (pipe (sigpipe))
551	return 0;
552		605
553	if (methods == EVMETHOD_AUTO)	606	if (methods == EVMETHOD_AUTO)
554	if (!enable_secure () && getenv ("LIBEV_METHODS"))	607	if (!enable_secure () && getenv ("LIBEV_METHODS"))
555	methods = atoi (getenv ("LIBEV_METHODS"));	608	methods = atoi (getenv ("LIBEV_METHODS"));
556	else	609	else
557	methods = EVMETHOD_ANY;	610	methods = EVMETHOD_ANY;
558		611
559	ev_method = 0;	612	method = 0;
560	#if EV_USE_KQUEUE	613	#if EV_USE_KQUEUE
561	if (!ev_method && (methods & EVMETHOD_KQUEUE)) kqueue_init (methods);	614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
562	#endif	615	#endif
563	#if EV_USE_EPOLL	616	#if EV_USE_EPOLL
564	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
565	#endif	618	#endif
566	#if EV_USE_POLL	619	#if EV_USE_POLL
567	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
568	#endif	621	#endif
569	#if EV_USE_SELECT	622	#if EV_USE_SELECT
570	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
571	#endif	624	#endif
		625	}
		626	}
572		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
573	if (ev_method)	715	if (ev_method (EV_A))
574	{	716	{
575	ev_watcher_init (&sigev, sigcb);	717	ev_watcher_init (&sigev, sigcb);
		718	ev_set_priority (&sigev, EV_MAXPRI);
576	siginit ();	719	siginit (EV_A);
577		720
578	#ifndef WIN32	721	#ifndef WIN32
579	ev_signal_init (&childev, childcb, SIGCHLD);	722	ev_signal_init (&childev, childcb, SIGCHLD);
		723	ev_set_priority (&childev, EV_MAXPRI);
580	ev_signal_start (&childev);	724	ev_signal_start (EV_A_ &childev);
		725	ev_unref (EV_A); /* child watcher should not keep loop alive */
581	#endif	726	#endif
582	}	727	}
		728	else
		729	default_loop = 0;
583	}	730	}
584		731
585	return ev_method;	732	return default_loop;
586	}	733	}
587		734
588	/*****************************************************************************/
589
590	void	735	void
591	ev_fork_prepare (void)	736	ev_default_destroy (void)
592	{	737	{
593	/* nop */	738	#if EV_MULTIPLICITY
594	}	739	struct ev_loop *loop = default_loop;
595
596	void
597	ev_fork_parent (void)
598	{
599	/* nop */
600	}
601
602	void
603	ev_fork_child (void)
604	{
605	#if EV_USE_EPOLL
606	if (ev_method == EVMETHOD_EPOLL)
607	epoll_postfork_child ();
608	#endif	740	#endif
609		741
		742	ev_ref (EV_A); /* child watcher */
		743	ev_signal_stop (EV_A_ &childev);
		744
		745	ev_ref (EV_A); /* signal watcher */
610	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);
611	close (sigpipe [0]);	764	close (sigpipe [0]);
612	close (sigpipe [1]);	765	close (sigpipe [1]);
613	pipe (sigpipe);	766	pipe (sigpipe);
		767
		768	ev_ref (EV_A); /* signal watcher */
614	siginit ();	769	siginit (EV_A);
615	}	770	}
616		771
617	/*****************************************************************************/	772	/*****************************************************************************/
618		773
619	static void	774	static void
620	call_pending (void)	775	call_pending (EV_P)
621	{	776	{
622	int pri;	777	int pri;
623		778
624	for (pri = NUMPRI; pri--; )	779	for (pri = NUMPRI; pri--; )
625	while (pendingcnt [pri])	780	while (pendingcnt [pri])
…		…
627	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
628		783
629	if (p->w)	784	if (p->w)
630	{	785	{
631	p->w->pending = 0;	786	p->w->pending = 0;
632	p->w->cb (p->w, p->events);	787	p->w->cb (EV_A_ p->w, p->events);
633	}	788	}
634	}	789	}
635	}	790	}
636		791
637	static void	792	static void
638	timers_reify (void)	793	timers_reify (EV_P)
639	{	794	{
640	while (timercnt && timers [0]->at <= now)	795	while (timercnt && timers [0]->at <= mn_now)
641	{	796	{
642	struct ev_timer *w = timers [0];	797	struct ev_timer *w = timers [0];
		798
		799	assert (("inactive timer on timer heap detected", ev_is_active (w)));
643		800
644	/* first reschedule or stop timer */	801	/* first reschedule or stop timer */
645	if (w->repeat)	802	if (w->repeat)
646	{	803	{
647	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	804	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
648	w->at = now + w->repeat;	805	w->at = mn_now + w->repeat;
649	downheap ((WT *)timers, timercnt, 0);	806	downheap ((WT *)timers, timercnt, 0);
650	}	807	}
651	else	808	else
652	ev_timer_stop (w); /* nonrepeating: stop timer */	809	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
653		810
654	event ((W)w, EV_TIMEOUT);	811	event (EV_A_ (W)w, EV_TIMEOUT);
655	}	812	}
656	}	813	}
657		814
658	static void	815	static void
659	periodics_reify (void)	816	periodics_reify (EV_P)
660	{	817	{
661	while (periodiccnt && periodics [0]->at <= ev_now)	818	while (periodiccnt && periodics [0]->at <= rt_now)
662	{	819	{
663	struct ev_periodic *w = periodics [0];	820	struct ev_periodic *w = periodics [0];
		821
		822	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
664		823
665	/* first reschedule or stop timer */	824	/* first reschedule or stop timer */
666	if (w->interval)	825	if (w->interval)
667	{	826	{
668	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	827	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;
669	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > ev_now));	828	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
670	downheap ((WT *)periodics, periodiccnt, 0);	829	downheap ((WT *)periodics, periodiccnt, 0);
671	}	830	}
672	else	831	else
673	ev_periodic_stop (w); /* nonrepeating: stop timer */	832	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
674		833
675	event ((W)w, EV_PERIODIC);	834	event (EV_A_ (W)w, EV_PERIODIC);
676	}	835	}
677	}	836	}
678		837
679	static void	838	static void
680	periodics_reschedule (ev_tstamp diff)	839	periodics_reschedule (EV_P)
681	{	840	{
682	int i;	841	int i;
683		842
684	/* adjust periodics after time jump */	843	/* adjust periodics after time jump */
685	for (i = 0; i < periodiccnt; ++i)	844	for (i = 0; i < periodiccnt; ++i)
686	{	845	{
687	struct ev_periodic *w = periodics [i];	846	struct ev_periodic *w = periodics [i];
688		847
689	if (w->interval)	848	if (w->interval)
690	{	849	{
691	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	850	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
692		851
693	if (fabs (diff) >= 1e-4)	852	if (fabs (diff) >= 1e-4)
694	{	853	{
695	ev_periodic_stop (w);	854	ev_periodic_stop (EV_A_ w);
696	ev_periodic_start (w);	855	ev_periodic_start (EV_A_ w);
697		856
698	i = 0; /* restart loop, inefficient, but time jumps should be rare */	857	i = 0; /* restart loop, inefficient, but time jumps should be rare */
699	}	858	}
700	}	859	}
701	}	860	}
702	}	861	}
703		862
704	static int	863	inline int
705	time_update_monotonic (void)	864	time_update_monotonic (EV_P)
706	{	865	{
707	now = get_clock ();	866	mn_now = get_clock ();
708		867
709	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	868	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
710	{	869	{
711	ev_now = now + diff;	870	rt_now = rtmn_diff + mn_now;
712	return 0;	871	return 0;
713	}	872	}
714	else	873	else
715	{	874	{
716	now_floor = now;	875	now_floor = mn_now;
717	ev_now = ev_time ();	876	rt_now = ev_time ();
718	return 1;	877	return 1;
719	}	878	}
720	}	879	}
721		880
722	static void	881	static void
723	time_update (void)	882	time_update (EV_P)
724	{	883	{
725	int i;	884	int i;
726		885
727	#if EV_USE_MONOTONIC	886	#if EV_USE_MONOTONIC
728	if (expect_true (have_monotonic))	887	if (expect_true (have_monotonic))
729	{	888	{
730	if (time_update_monotonic ())	889	if (time_update_monotonic (EV_A))
731	{	890	{
732	ev_tstamp odiff = diff;	891	ev_tstamp odiff = rtmn_diff;
733		892
734	for (i = 4; --i; ) /* loop a few times, before making important decisions */	893	for (i = 4; --i; ) /* loop a few times, before making important decisions */
735	{	894	{
736	diff = ev_now - now;	895	rtmn_diff = rt_now - mn_now;
737		896
738	if (fabs (odiff - diff) < MIN_TIMEJUMP)	897	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
739	return; /* all is well */	898	return; /* all is well */
740		899
741	ev_now = ev_time ();	900	rt_now = ev_time ();
742	now = get_clock ();	901	mn_now = get_clock ();
743	now_floor = now;	902	now_floor = mn_now;
744	}	903	}
745		904
746	periodics_reschedule (diff - odiff);	905	periodics_reschedule (EV_A);
747	/* no timer adjustment, as the monotonic clock doesn't jump */	906	/* no timer adjustment, as the monotonic clock doesn't jump */
		907	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
748	}	908	}
749	}	909	}
750	else	910	else
751	#endif	911	#endif
752	{	912	{
753	ev_now = ev_time ();	913	rt_now = ev_time ();
754		914
755	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	915	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
756	{	916	{
757	periodics_reschedule (ev_now - now);	917	periodics_reschedule (EV_A);
758		918
759	/* adjust timers. this is easy, as the offset is the same for all */	919	/* adjust timers. this is easy, as the offset is the same for all */
760	for (i = 0; i < timercnt; ++i)	920	for (i = 0; i < timercnt; ++i)
761	timers [i]->at += diff;	921	timers [i]->at += rt_now - mn_now;
762	}	922	}
763		923
764	now = ev_now;	924	mn_now = rt_now;
765	}	925	}
766	}	926	}
767		927
768	int ev_loop_done;	928	void
		929	ev_ref (EV_P)
		930	{
		931	++activecnt;
		932	}
769		933
		934	void
		935	ev_unref (EV_P)
		936	{
		937	--activecnt;
		938	}
		939
		940	static int loop_done;
		941
		942	void
770	void ev_loop (int flags)	943	ev_loop (EV_P_ int flags)
771	{	944	{
772	double block;	945	double block;
773	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	946	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
774		947
775	do	948	do
776	{	949	{
777	/* queue check watchers (and execute them) */	950	/* queue check watchers (and execute them) */
778	if (expect_false (preparecnt))	951	if (expect_false (preparecnt))
779	{	952	{
780	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	953	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
781	call_pending ();	954	call_pending (EV_A);
782	}	955	}
783		956
784	/* update fd-related kernel structures */	957	/* update fd-related kernel structures */
785	fd_reify ();	958	fd_reify (EV_A);
786		959
787	/* calculate blocking time */	960	/* calculate blocking time */
788		961
789	/* we only need this for !monotonic clockor timers, but as we basically	962	/* we only need this for !monotonic clockor timers, but as we basically
790	always have timers, we just calculate it always */	963	always have timers, we just calculate it always */
791	#if EV_USE_MONOTONIC	964	#if EV_USE_MONOTONIC
792	if (expect_true (have_monotonic))	965	if (expect_true (have_monotonic))
793	time_update_monotonic ();	966	time_update_monotonic (EV_A);
794	else	967	else
795	#endif	968	#endif
796	{	969	{
797	ev_now = ev_time ();	970	rt_now = ev_time ();
798	now = ev_now;	971	mn_now = rt_now;
799	}	972	}
800		973
801	if (flags & EVLOOP_NONBLOCK || idlecnt)	974	if (flags & EVLOOP_NONBLOCK || idlecnt)
802	block = 0.;	975	block = 0.;
803	else	976	else
804	{	977	{
805	block = MAX_BLOCKTIME;	978	block = MAX_BLOCKTIME;
806		979
807	if (timercnt)	980	if (timercnt)
808	{	981	{
809	ev_tstamp to = timers [0]->at - now + method_fudge;	982	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
810	if (block > to) block = to;	983	if (block > to) block = to;
811	}	984	}
812		985
813	if (periodiccnt)	986	if (periodiccnt)
814	{	987	{
815	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	988	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
816	if (block > to) block = to;	989	if (block > to) block = to;
817	}	990	}
818		991
819	if (block < 0.) block = 0.;	992	if (block < 0.) block = 0.;
820	}	993	}
821		994
822	method_poll (block);	995	method_poll (EV_A_ block);
823		996
824	/* update ev_now, do magic */	997	/* update rt_now, do magic */
825	time_update ();	998	time_update (EV_A);
826		999
827	/* queue pending timers and reschedule them */	1000	/* queue pending timers and reschedule them */
828	timers_reify (); /* relative timers called last */	1001	timers_reify (EV_A); /* relative timers called last */
829	periodics_reify (); /* absolute timers called first */	1002	periodics_reify (EV_A); /* absolute timers called first */
830		1003
831	/* queue idle watchers unless io or timers are pending */	1004	/* queue idle watchers unless io or timers are pending */
832	if (!pendingcnt)	1005	if (!pendingcnt)
833	queue_events ((W *)idles, idlecnt, EV_IDLE);	1006	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
834		1007
835	/* queue check watchers, to be executed first */	1008	/* queue check watchers, to be executed first */
836	if (checkcnt)	1009	if (checkcnt)
837	queue_events ((W *)checks, checkcnt, EV_CHECK);	1010	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
838		1011
839	call_pending ();	1012	call_pending (EV_A);
840	}	1013	}
841	while (!ev_loop_done);	1014	while (activecnt && !loop_done);
842		1015
843	if (ev_loop_done != 2)	1016	if (loop_done != 2)
844	ev_loop_done = 0;	1017	loop_done = 0;
		1018	}
		1019
		1020	void
		1021	ev_unloop (EV_P_ int how)
		1022	{
		1023	loop_done = how;
845	}	1024	}
846		1025
847	/*****************************************************************************/	1026	/*****************************************************************************/
848		1027
849	static void	1028	inline void
850	wlist_add (WL *head, WL elem)	1029	wlist_add (WL *head, WL elem)
851	{	1030	{
852	elem->next = *head;	1031	elem->next = *head;
853	*head = elem;	1032	*head = elem;
854	}	1033	}
855		1034
856	static void	1035	inline void
857	wlist_del (WL *head, WL elem)	1036	wlist_del (WL *head, WL elem)
858	{	1037	{
859	while (*head)	1038	while (*head)
860	{	1039	{
861	if (*head == elem)	1040	if (*head == elem)
…		…
866		1045
867	head = &(*head)->next;	1046	head = &(*head)->next;
868	}	1047	}
869	}	1048	}
870		1049
871	static void	1050	inline void
872	ev_clear_pending (W w)	1051	ev_clear_pending (EV_P_ W w)
873	{	1052	{
874	if (w->pending)	1053	if (w->pending)
875	{	1054	{
876	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1055	pendings [ABSPRI (w)][w->pending - 1].w = 0;
877	w->pending = 0;	1056	w->pending = 0;
878	}	1057	}
879	}	1058	}
880		1059
881	static void	1060	inline void
882	ev_start (W w, int active)	1061	ev_start (EV_P_ W w, int active)
883	{	1062	{
884	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1063	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
885	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1064	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
886		1065
887	w->active = active;	1066	w->active = active;
		1067	ev_ref (EV_A);
888	}	1068	}
889		1069
890	static void	1070	inline void
891	ev_stop (W w)	1071	ev_stop (EV_P_ W w)
892	{	1072	{
		1073	ev_unref (EV_A);
893	w->active = 0;	1074	w->active = 0;
894	}	1075	}
895		1076
896	/*****************************************************************************/	1077	/*****************************************************************************/
897		1078
898	void	1079	void
899	ev_io_start (struct ev_io *w)	1080	ev_io_start (EV_P_ struct ev_io *w)
900	{	1081	{
901	int fd = w->fd;	1082	int fd = w->fd;
902		1083
903	if (ev_is_active (w))	1084	if (ev_is_active (w))
904	return;	1085	return;
905		1086
906	assert (("ev_io_start called with negative fd", fd >= 0));	1087	assert (("ev_io_start called with negative fd", fd >= 0));
907		1088
908	ev_start ((W)w, 1);	1089	ev_start (EV_A_ (W)w, 1);
909	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1090	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
910	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1091	wlist_add ((WL *)&anfds[fd].head, (WL)w);
911		1092
912	fd_change (fd);	1093	fd_change (EV_A_ fd);
913	}	1094	}
914		1095
915	void	1096	void
916	ev_io_stop (struct ev_io *w)	1097	ev_io_stop (EV_P_ struct ev_io *w)
917	{	1098	{
918	ev_clear_pending ((W)w);	1099	ev_clear_pending (EV_A_ (W)w);
919	if (!ev_is_active (w))	1100	if (!ev_is_active (w))
920	return;	1101	return;
921		1102
922	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1103	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
923	ev_stop ((W)w);	1104	ev_stop (EV_A_ (W)w);
924		1105
925	fd_change (w->fd);	1106	fd_change (EV_A_ w->fd);
926	}	1107	}
927		1108
928	void	1109	void
929	ev_timer_start (struct ev_timer *w)	1110	ev_timer_start (EV_P_ struct ev_timer *w)
930	{	1111	{
931	if (ev_is_active (w))	1112	if (ev_is_active (w))
932	return;	1113	return;
933		1114
934	w->at += now;	1115	w->at += mn_now;
935		1116
936	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1117	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
937		1118
938	ev_start ((W)w, ++timercnt);	1119	ev_start (EV_A_ (W)w, ++timercnt);
939	array_needsize (timers, timermax, timercnt, );	1120	array_needsize (timers, timermax, timercnt, );
940	timers [timercnt - 1] = w;	1121	timers [timercnt - 1] = w;
941	upheap ((WT *)timers, timercnt - 1);	1122	upheap ((WT *)timers, timercnt - 1);
942	}	1123	}
943		1124
944	void	1125	void
945	ev_timer_stop (struct ev_timer *w)	1126	ev_timer_stop (EV_P_ struct ev_timer *w)
946	{	1127	{
947	ev_clear_pending ((W)w);	1128	ev_clear_pending (EV_A_ (W)w);
948	if (!ev_is_active (w))	1129	if (!ev_is_active (w))
949	return;	1130	return;
950		1131
951	if (w->active < timercnt--)	1132	if (w->active < timercnt--)
952	{	1133	{
…		…
954	downheap ((WT *)timers, timercnt, w->active - 1);	1135	downheap ((WT *)timers, timercnt, w->active - 1);
955	}	1136	}
956		1137
957	w->at = w->repeat;	1138	w->at = w->repeat;
958		1139
959	ev_stop ((W)w);	1140	ev_stop (EV_A_ (W)w);
960	}	1141	}
961		1142
962	void	1143	void
963	ev_timer_again (struct ev_timer *w)	1144	ev_timer_again (EV_P_ struct ev_timer *w)
964	{	1145	{
965	if (ev_is_active (w))	1146	if (ev_is_active (w))
966	{	1147	{
967	if (w->repeat)	1148	if (w->repeat)
968	{	1149	{
969	w->at = now + w->repeat;	1150	w->at = mn_now + w->repeat;
970	downheap ((WT *)timers, timercnt, w->active - 1);	1151	downheap ((WT *)timers, timercnt, w->active - 1);
971	}	1152	}
972	else	1153	else
973	ev_timer_stop (w);	1154	ev_timer_stop (EV_A_ w);
974	}	1155	}
975	else if (w->repeat)	1156	else if (w->repeat)
976	ev_timer_start (w);	1157	ev_timer_start (EV_A_ w);
977	}	1158	}
978		1159
979	void	1160	void
980	ev_periodic_start (struct ev_periodic *w)	1161	ev_periodic_start (EV_P_ struct ev_periodic *w)
981	{	1162	{
982	if (ev_is_active (w))	1163	if (ev_is_active (w))
983	return;	1164	return;
984		1165
985	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1166	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
986		1167
987	/* this formula differs from the one in periodic_reify because we do not always round up */	1168	/* this formula differs from the one in periodic_reify because we do not always round up */
988	if (w->interval)	1169	if (w->interval)
989	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1170	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
990		1171
991	ev_start ((W)w, ++periodiccnt);	1172	ev_start (EV_A_ (W)w, ++periodiccnt);
992	array_needsize (periodics, periodicmax, periodiccnt, );	1173	array_needsize (periodics, periodicmax, periodiccnt, );
993	periodics [periodiccnt - 1] = w;	1174	periodics [periodiccnt - 1] = w;
994	upheap ((WT *)periodics, periodiccnt - 1);	1175	upheap ((WT *)periodics, periodiccnt - 1);
995	}	1176	}
996		1177
997	void	1178	void
998	ev_periodic_stop (struct ev_periodic *w)	1179	ev_periodic_stop (EV_P_ struct ev_periodic *w)
999	{	1180	{
1000	ev_clear_pending ((W)w);	1181	ev_clear_pending (EV_A_ (W)w);
1001	if (!ev_is_active (w))	1182	if (!ev_is_active (w))
1002	return;	1183	return;
1003		1184
1004	if (w->active < periodiccnt--)	1185	if (w->active < periodiccnt--)
1005	{	1186	{
1006	periodics [w->active - 1] = periodics [periodiccnt];	1187	periodics [w->active - 1] = periodics [periodiccnt];
1007	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1188	downheap ((WT *)periodics, periodiccnt, w->active - 1);
1008	}	1189	}
1009		1190
1010	ev_stop ((W)w);	1191	ev_stop (EV_A_ (W)w);
1011	}	1192	}
1012		1193
1013	void	1194	void
1014	ev_signal_start (struct ev_signal *w)	1195	ev_idle_start (EV_P_ struct ev_idle *w)
1015	{	1196	{
1016	if (ev_is_active (w))	1197	if (ev_is_active (w))
1017	return;	1198	return;
1018		1199
		1200	ev_start (EV_A_ (W)w, ++idlecnt);
		1201	array_needsize (idles, idlemax, idlecnt, );
		1202	idles [idlecnt - 1] = w;
		1203	}
		1204
		1205	void
		1206	ev_idle_stop (EV_P_ struct ev_idle *w)
		1207	{
		1208	ev_clear_pending (EV_A_ (W)w);
		1209	if (ev_is_active (w))
		1210	return;
		1211
		1212	idles [w->active - 1] = idles [--idlecnt];
		1213	ev_stop (EV_A_ (W)w);
		1214	}
		1215
		1216	void
		1217	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1218	{
		1219	if (ev_is_active (w))
		1220	return;
		1221
		1222	ev_start (EV_A_ (W)w, ++preparecnt);
		1223	array_needsize (prepares, preparemax, preparecnt, );
		1224	prepares [preparecnt - 1] = w;
		1225	}
		1226
		1227	void
		1228	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1229	{
		1230	ev_clear_pending (EV_A_ (W)w);
		1231	if (ev_is_active (w))
		1232	return;
		1233
		1234	prepares [w->active - 1] = prepares [--preparecnt];
		1235	ev_stop (EV_A_ (W)w);
		1236	}
		1237
		1238	void
		1239	ev_check_start (EV_P_ struct ev_check *w)
		1240	{
		1241	if (ev_is_active (w))
		1242	return;
		1243
		1244	ev_start (EV_A_ (W)w, ++checkcnt);
		1245	array_needsize (checks, checkmax, checkcnt, );
		1246	checks [checkcnt - 1] = w;
		1247	}
		1248
		1249	void
		1250	ev_check_stop (EV_P_ struct ev_check *w)
		1251	{
		1252	ev_clear_pending (EV_A_ (W)w);
		1253	if (ev_is_active (w))
		1254	return;
		1255
		1256	checks [w->active - 1] = checks [--checkcnt];
		1257	ev_stop (EV_A_ (W)w);
		1258	}
		1259
		1260	#ifndef SA_RESTART
		1261	# define SA_RESTART 0
		1262	#endif
		1263
		1264	void
		1265	ev_signal_start (EV_P_ struct ev_signal *w)
		1266	{
		1267	#if EV_MULTIPLICITY
		1268	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1269	#endif
		1270	if (ev_is_active (w))
		1271	return;
		1272
1019	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1273	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1020		1274
1021	ev_start ((W)w, 1);	1275	ev_start (EV_A_ (W)w, 1);
1022	array_needsize (signals, signalmax, w->signum, signals_init);	1276	array_needsize (signals, signalmax, w->signum, signals_init);
1023	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1277	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1024		1278
1025	if (!w->next)	1279	if (!w->next)
1026	{	1280	{
1027	struct sigaction sa;	1281	struct sigaction sa;
1028	sa.sa_handler = sighandler;	1282	sa.sa_handler = sighandler;
1029	sigfillset (&sa.sa_mask);	1283	sigfillset (&sa.sa_mask);
1030	sa.sa_flags = 0;	1284	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1031	sigaction (w->signum, &sa, 0);	1285	sigaction (w->signum, &sa, 0);
1032	}	1286	}
1033	}	1287	}
1034		1288
1035	void	1289	void
1036	ev_signal_stop (struct ev_signal *w)	1290	ev_signal_stop (EV_P_ struct ev_signal *w)
1037	{	1291	{
1038	ev_clear_pending ((W)w);	1292	ev_clear_pending (EV_A_ (W)w);
1039	if (!ev_is_active (w))	1293	if (!ev_is_active (w))
1040	return;	1294	return;
1041		1295
1042	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1296	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1043	ev_stop ((W)w);	1297	ev_stop (EV_A_ (W)w);
1044		1298
1045	if (!signals [w->signum - 1].head)	1299	if (!signals [w->signum - 1].head)
1046	signal (w->signum, SIG_DFL);	1300	signal (w->signum, SIG_DFL);
1047	}	1301	}
1048		1302
1049	void	1303	void
1050	ev_idle_start (struct ev_idle *w)	1304	ev_child_start (EV_P_ struct ev_child *w)
1051	{	1305	{
		1306	#if EV_MULTIPLICITY
		1307	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1308	#endif
1052	if (ev_is_active (w))	1309	if (ev_is_active (w))
1053	return;	1310	return;
1054		1311
1055	ev_start ((W)w, ++idlecnt);	1312	ev_start (EV_A_ (W)w, 1);
1056	array_needsize (idles, idlemax, idlecnt, );	1313	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1057	idles [idlecnt - 1] = w;
1058	}	1314	}
1059		1315
1060	void	1316	void
1061	ev_idle_stop (struct ev_idle *w)	1317	ev_child_stop (EV_P_ struct ev_child *w)
1062	{	1318	{
1063	ev_clear_pending ((W)w);	1319	ev_clear_pending (EV_A_ (W)w);
1064	if (ev_is_active (w))	1320	if (ev_is_active (w))
1065	return;	1321	return;
1066		1322
1067	idles [w->active - 1] = idles [--idlecnt];
1068	ev_stop ((W)w);
1069	}
1070
1071	void
1072	ev_prepare_start (struct ev_prepare *w)
1073	{
1074	if (ev_is_active (w))
1075	return;
1076
1077	ev_start ((W)w, ++preparecnt);
1078	array_needsize (prepares, preparemax, preparecnt, );
1079	prepares [preparecnt - 1] = w;
1080	}
1081
1082	void
1083	ev_prepare_stop (struct ev_prepare *w)
1084	{
1085	ev_clear_pending ((W)w);
1086	if (ev_is_active (w))
1087	return;
1088
1089	prepares [w->active - 1] = prepares [--preparecnt];
1090	ev_stop ((W)w);
1091	}
1092
1093	void
1094	ev_check_start (struct ev_check *w)
1095	{
1096	if (ev_is_active (w))
1097	return;
1098
1099	ev_start ((W)w, ++checkcnt);
1100	array_needsize (checks, checkmax, checkcnt, );
1101	checks [checkcnt - 1] = w;
1102	}
1103
1104	void
1105	ev_check_stop (struct ev_check *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	checks [w->active - 1] = checks [--checkcnt];
1112	ev_stop ((W)w);
1113	}
1114
1115	void
1116	ev_child_start (struct ev_child *w)
1117	{
1118	if (ev_is_active (w))
1119	return;
1120
1121	ev_start ((W)w, 1);
1122	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1123	}
1124
1125	void
1126	ev_child_stop (struct ev_child *w)
1127	{
1128	ev_clear_pending ((W)w);
1129	if (ev_is_active (w))
1130	return;
1131
1132	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1323	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1133	ev_stop ((W)w);	1324	ev_stop (EV_A_ (W)w);
1134	}	1325	}
1135		1326
1136	/*****************************************************************************/	1327	/*****************************************************************************/
1137		1328
1138	struct ev_once	1329	struct ev_once
…		…
1142	void (*cb)(int revents, void *arg);	1333	void (*cb)(int revents, void *arg);
1143	void *arg;	1334	void *arg;
1144	};	1335	};
1145		1336
1146	static void	1337	static void
1147	once_cb (struct ev_once *once, int revents)	1338	once_cb (EV_P_ struct ev_once *once, int revents)
1148	{	1339	{
1149	void (*cb)(int revents, void *arg) = once->cb;	1340	void (*cb)(int revents, void *arg) = once->cb;
1150	void *arg = once->arg;	1341	void *arg = once->arg;
1151		1342
1152	ev_io_stop (&once->io);	1343	ev_io_stop (EV_A_ &once->io);
1153	ev_timer_stop (&once->to);	1344	ev_timer_stop (EV_A_ &once->to);
1154	free (once);	1345	free (once);
1155		1346
1156	cb (revents, arg);	1347	cb (revents, arg);
1157	}	1348	}
1158		1349
1159	static void	1350	static void
1160	once_cb_io (struct ev_io *w, int revents)	1351	once_cb_io (EV_P_ struct ev_io *w, int revents)
1161	{	1352	{
1162	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1353	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1163	}	1354	}
1164		1355
1165	static void	1356	static void
1166	once_cb_to (struct ev_timer *w, int revents)	1357	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1167	{	1358	{
1168	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1359	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1169	}	1360	}
1170		1361
1171	void	1362	void
1172	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1363	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1173	{	1364	{
1174	struct ev_once *once = malloc (sizeof (struct ev_once));	1365	struct ev_once *once = malloc (sizeof (struct ev_once));
1175		1366
1176	if (!once)	1367	if (!once)
1177	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1368	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1182		1373
1183	ev_watcher_init (&once->io, once_cb_io);	1374	ev_watcher_init (&once->io, once_cb_io);
1184	if (fd >= 0)	1375	if (fd >= 0)
1185	{	1376	{
1186	ev_io_set (&once->io, fd, events);	1377	ev_io_set (&once->io, fd, events);
1187	ev_io_start (&once->io);	1378	ev_io_start (EV_A_ &once->io);
1188	}	1379	}
1189		1380
1190	ev_watcher_init (&once->to, once_cb_to);	1381	ev_watcher_init (&once->to, once_cb_to);
1191	if (timeout >= 0.)	1382	if (timeout >= 0.)
1192	{	1383	{
1193	ev_timer_set (&once->to, timeout, 0.);	1384	ev_timer_set (&once->to, timeout, 0.);
1194	ev_timer_start (&once->to);	1385	ev_timer_start (EV_A_ &once->to);
1195	}	1386	}
1196	}	1387	}
1197	}	1388	}
1198		1389
1199	/*****************************************************************************/
1200
1201	#if 0
1202
1203	struct ev_io wio;
1204
1205	static void
1206	sin_cb (struct ev_io *w, int revents)
1207	{
1208	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1209	}
1210
1211	static void
1212	ocb (struct ev_timer *w, int revents)
1213	{
1214	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1215	ev_timer_stop (w);
1216	ev_timer_start (w);
1217	}
1218
1219	static void
1220	scb (struct ev_signal *w, int revents)
1221	{
1222	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1223	ev_io_stop (&wio);
1224	ev_io_start (&wio);
1225	}
1226
1227	static void
1228	gcb (struct ev_signal *w, int revents)
1229	{
1230	fprintf (stderr, "generic %x\n", revents);
1231
1232	}
1233
1234	int main (void)
1235	{
1236	ev_init (0);
1237
1238	ev_io_init (&wio, sin_cb, 0, EV_READ);
1239	ev_io_start (&wio);
1240
1241	struct ev_timer t[10000];
1242
1243	#if 0
1244	int i;
1245	for (i = 0; i < 10000; ++i)
1246	{
1247	struct ev_timer *w = t + i;
1248	ev_watcher_init (w, ocb, i);
1249	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1250	ev_timer_start (w);
1251	if (drand48 () < 0.5)
1252	ev_timer_stop (w);
1253	}
1254	#endif
1255
1256	struct ev_timer t1;
1257	ev_timer_init (&t1, ocb, 5, 10);
1258	ev_timer_start (&t1);
1259
1260	struct ev_signal sig;
1261	ev_signal_init (&sig, scb, SIGQUIT);
1262	ev_signal_start (&sig);
1263
1264	struct ev_check cw;
1265	ev_check_init (&cw, gcb);
1266	ev_check_start (&cw);
1267
1268	struct ev_idle iw;
1269	ev_idle_init (&iw, gcb);
1270	ev_idle_start (&iw);
1271
1272	ev_loop (0);
1273
1274	return 0;
1275	}
1276
1277	#endif
1278
1279
1280
1281

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