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Comparing libev/ev.c (file contents):
Revision 1.43 by root, Fri Nov 2 20:21:33 2007 UTC vs.
Revision 1.61 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>
…		…
42	#include <stdio.h>	64	#include <stdio.h>
43		65
44	#include <assert.h>	66	#include <assert.h>
45	#include <errno.h>	67	#include <errno.h>
46	#include <sys/types.h>	68	#include <sys/types.h>
		69	#ifndef WIN32
47	#include <sys/wait.h>	70	# include <sys/wait.h>
		71	#endif
48	#include <sys/time.h>	72	#include <sys/time.h>
49	#include <time.h>	73	#include <time.h>
50		74
51	/**/	75	/**/
52		76
…		…
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	87	#endif
64		88
65	#ifndef EV_USE_EPOLL	89	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	90	# define EV_USE_EPOLL 0
		91	#endif
		92
		93	#ifndef EV_USE_KQUEUE
		94	# define EV_USE_KQUEUE 0
67	#endif	95	#endif
68		96
69	#ifndef EV_USE_REALTIME	97	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	98	# define EV_USE_REALTIME 1
71	#endif	99	#endif
…		…
107		135
108	typedef struct ev_watcher *W;	136	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	137	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	138	typedef struct ev_watcher_time *WT;
111		139
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	140	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115
116	static int have_monotonic; /* runtime */
117
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		141
122	/*****************************************************************************/	142	/*****************************************************************************/
123		143
124	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
125	ev_time (void)	178	ev_time (void)
126	{	179	{
127	#if EV_USE_REALTIME	180	#if EV_USE_REALTIME
128	struct timespec ts;	181	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	182	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	186	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	187	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	188	#endif
136	}	189	}
137		190
138	static ev_tstamp	191	inline ev_tstamp
139	get_clock (void)	192	get_clock (void)
140	{	193	{
141	#if EV_USE_MONOTONIC	194	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	195	if (expect_true (have_monotonic))
143	{	196	{
…		…
146	return ts.tv_sec + ts.tv_nsec * 1e-9;	199	return ts.tv_sec + ts.tv_nsec * 1e-9;
147	}	200	}
148	#endif	201	#endif
149		202
150	return ev_time ();	203	return ev_time ();
		204	}
		205
		206	ev_tstamp
		207	ev_now (EV_P)
		208	{
		209	return rt_now;
151	}	210	}
152		211
153	#define array_roundsize(base,n) ((n) | 4 & ~3)	212	#define array_roundsize(base,n) ((n) | 4 & ~3)
154		213
155	#define array_needsize(base,cur,cnt,init) \	214	#define array_needsize(base,cur,cnt,init) \
…		…
167	cur = newcnt; \	226	cur = newcnt; \
168	}	227	}
169		228
170	/*****************************************************************************/	229	/*****************************************************************************/
171		230
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181
182	static void	231	static void
183	anfds_init (ANFD *base, int count)	232	anfds_init (ANFD *base, int count)
184	{	233	{
185	while (count--)	234	while (count--)
186	{	235	{
…		…
190		239
191	++base;	240	++base;
192	}	241	}
193	}	242	}
194		243
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	244	static void
205	event (W w, int events)	245	event (EV_P_ W w, int events)
206	{	246	{
207	if (w->pending)	247	if (w->pending)
208	{	248	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	249	pendings [ABSPRI (w)][w->pending - 1].events |= events;
210	return;	250	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	255	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	256	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	257	}
218		258
219	static void	259	static void
220	queue_events (W *events, int eventcnt, int type)	260	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	261	{
222	int i;	262	int i;
223		263
224	for (i = 0; i < eventcnt; ++i)	264	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	265	event (EV_A_ events [i], type);
226	}	266	}
227		267
228	static void	268	static void
229	fd_event (int fd, int events)	269	fd_event (EV_P_ int fd, int events)
230	{	270	{
231	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	272	struct ev_io *w;
233		273
234	for (w = anfd->head; w; w = w->next)	274	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	275	{
236	int ev = w->events & events;	276	int ev = w->events & events;
237		277
238	if (ev)	278	if (ev)
239	event ((W)w, ev);	279	event (EV_A_ (W)w, ev);
240	}	280	}
241	}	281	}
242		282
243	/*****************************************************************************/	283	/*****************************************************************************/
244		284
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	285	static void
249	fd_reify (void)	286	fd_reify (EV_P)
250	{	287	{
251	int i;	288	int i;
252		289
253	for (i = 0; i < fdchangecnt; ++i)	290	for (i = 0; i < fdchangecnt; ++i)
254	{	291	{
…		…
256	ANFD *anfd = anfds + fd;	293	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	294	struct ev_io *w;
258		295
259	int events = 0;	296	int events = 0;
260		297
261	for (w = anfd->head; w; w = w->next)	298	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	299	events |= w->events;
263		300
264	anfd->reify = 0;	301	anfd->reify = 0;
265		302
266	if (anfd->events != events)	303	if (anfd->events != events)
267	{	304	{
268	method_modify (fd, anfd->events, events);	305	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	306	anfd->events = events;
270	}	307	}
271	}	308	}
272		309
273	fdchangecnt = 0;	310	fdchangecnt = 0;
274	}	311	}
275		312
276	static void	313	static void
277	fd_change (int fd)	314	fd_change (EV_P_ int fd)
278	{	315	{
279	if (anfds [fd].reify || fdchangecnt < 0)	316	if (anfds [fd].reify || fdchangecnt < 0)
280	return;	317	return;
281		318
282	anfds [fd].reify = 1;	319	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	322	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	323	fdchanges [fdchangecnt - 1] = fd;
287	}	324	}
288		325
289	static void	326	static void
290	fd_kill (int fd)	327	fd_kill (EV_P_ int fd)
291	{	328	{
292	struct ev_io *w;	329	struct ev_io *w;
293		330
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	331	while ((w = (struct ev_io *)anfds [fd].head))
296	{	332	{
297	ev_io_stop (w);	333	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	334	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	335	}
300	}	336	}
301		337
302	/* called on EBADF to verify fds */	338	/* called on EBADF to verify fds */
303	static void	339	static void
304	fd_ebadf (void)	340	fd_ebadf (EV_P)
305	{	341	{
306	int fd;	342	int fd;
307		343
308	for (fd = 0; fd < anfdmax; ++fd)	344	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	345	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	346	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	347	fd_kill (EV_A_ fd);
312	}	348	}
313		349
314	/* 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 */
315	static void	351	static void
316	fd_enomem (void)	352	fd_enomem (EV_P)
317	{	353	{
318	int fd = anfdmax;	354	int fd = anfdmax;
319		355
320	while (fd--)	356	while (fd--)
321	if (anfds [fd].events)	357	if (anfds [fd].events)
322	{	358	{
323	close (fd);	359	close (fd);
324	fd_kill (fd);	360	fd_kill (EV_A_ fd);
325	return;	361	return;
326	}	362	}
327	}	363	}
328		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
329	/*****************************************************************************/	380	/*****************************************************************************/
330		381
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	382	static void
338	upheap (WT *timers, int k)	383	upheap (WT *heap, int k)
339	{	384	{
340	WT w = timers [k];	385	WT w = heap [k];
341		386
342	while (k && timers [k >> 1]->at > w->at)	387	while (k && heap [k >> 1]->at > w->at)
343	{	388	{
344	timers [k] = timers [k >> 1];	389	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	390	heap [k]->active = k + 1;
346	k >>= 1;	391	k >>= 1;
347	}	392	}
348		393
349	timers [k] = w;	394	heap [k] = w;
350	timers [k]->active = k + 1;	395	heap [k]->active = k + 1;
351		396
352	}	397	}
353		398
354	static void	399	static void
355	downheap (WT *timers, int N, int k)	400	downheap (WT *heap, int N, int k)
356	{	401	{
357	WT w = timers [k];	402	WT w = heap [k];
358		403
359	while (k < (N >> 1))	404	while (k < (N >> 1))
360	{	405	{
361	int j = k << 1;	406	int j = k << 1;
362		407
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	408	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	409	++j;
365		410
366	if (w->at <= timers [j]->at)	411	if (w->at <= heap [j]->at)
367	break;	412	break;
368		413
369	timers [k] = timers [j];	414	heap [k] = heap [j];
370	timers [k]->active = k + 1;	415	heap [k]->active = k + 1;
371	k = j;	416	k = j;
372	}	417	}
373		418
374	timers [k] = w;	419	heap [k] = w;
375	timers [k]->active = k + 1;	420	heap [k]->active = k + 1;
376	}	421	}
377		422
378	/*****************************************************************************/	423	/*****************************************************************************/
379		424
380	typedef struct	425	typedef struct
381	{	426	{
382	struct ev_signal *head;	427	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	428	sig_atomic_t volatile gotsig;
384	} ANSIG;	429	} ANSIG;
385		430
386	static ANSIG *signals;	431	static ANSIG *signals;
387	static int signalmax;	432	static int signalmax;
…		…
407	{	452	{
408	signals [signum - 1].gotsig = 1;	453	signals [signum - 1].gotsig = 1;
409		454
410	if (!gotsig)	455	if (!gotsig)
411	{	456	{
		457	int old_errno = errno;
412	gotsig = 1;	458	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	459	write (sigpipe [1], &signum, 1);
		460	errno = old_errno;
414	}	461	}
415	}	462	}
416		463
417	static void	464	static void
418	sigcb (struct ev_io *iow, int revents)	465	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	466	{
420	struct ev_signal *w;	467	struct ev_watcher_list *w;
421	int signum;	468	int signum;
422		469
423	read (sigpipe [0], &revents, 1);	470	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	471	gotsig = 0;
425		472
…		…
427	if (signals [signum].gotsig)	474	if (signals [signum].gotsig)
428	{	475	{
429	signals [signum].gotsig = 0;	476	signals [signum].gotsig = 0;
430		477
431	for (w = signals [signum].head; w; w = w->next)	478	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	479	event (EV_A_ (W)w, EV_SIGNAL);
433	}	480	}
434	}	481	}
435		482
436	static void	483	static void
437	siginit (void)	484	siginit (EV_P)
438	{	485	{
		486	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	487	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	488	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		489
442	/* rather than sort out wether we really need nb, set it */	490	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	491	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	492	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		493	#endif
445		494
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	495	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	496	ev_io_start (EV_A_ &sigev);
		497	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	498	}
449		499
450	/*****************************************************************************/	500	/*****************************************************************************/
451		501
452	static struct ev_idle **idles;	502	#ifndef WIN32
453	static int idlemax, idlecnt;
454
455	static struct ev_prepare **prepares;
456	static int preparemax, preparecnt;
457
458	static struct ev_check **checks;
459	static int checkmax, checkcnt;
460
461	/*****************************************************************************/
462		503
463	static struct ev_child *childs [PID_HASHSIZE];	504	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;	505	static struct ev_signal childev;
465		506
466	#ifndef WCONTINUED	507	#ifndef WCONTINUED
467	# define WCONTINUED 0	508	# define WCONTINUED 0
468	#endif	509	#endif
469		510
470	static void	511	static void
471	childcb (struct ev_signal *sw, int revents)	512	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	513	{
473	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	{
474	int pid, status;	529	int pid, status;
475		530
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	531	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	532	{
478	if (w->pid == pid || !w->pid)	533	/* make sure we are called again until all childs have been reaped */
479	{	534	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	535
481	event ((W)w, EV_CHILD);	536	child_reap (EV_A_ sw, pid, pid, status);
482	}	537	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		538	}
483	}	539	}
		540
		541	#endif
484		542
485	/*****************************************************************************/	543	/*****************************************************************************/
486		544
		545	#if EV_USE_KQUEUE
		546	# include "ev_kqueue.c"
		547	#endif
487	#if EV_USE_EPOLL	548	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	549	# include "ev_epoll.c"
489	#endif	550	#endif
490	#if EV_USE_POLL	551	#if EV_USE_POLL
491	# include "ev_poll.c"	552	# include "ev_poll.c"
…		…
504	ev_version_minor (void)	565	ev_version_minor (void)
505	{	566	{
506	return EV_VERSION_MINOR;	567	return EV_VERSION_MINOR;
507	}	568	}
508		569
509	/* 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 */
510	static int	571	static int
511	enable_secure ()	572	enable_secure (void)
512	{	573	{
		574	#ifdef WIN32
		575	return 0;
		576	#else
513	return getuid () != geteuid ()	577	return getuid () != geteuid ()
514	|| getgid () != getegid ();	578	|| getgid () != getegid ();
		579	#endif
515	}	580	}
516		581
517	int ev_init (int methods)	582	int
		583	ev_method (EV_P)
518	{	584	{
		585	return method;
		586	}
		587
		588	static void
		589	loop_init (EV_P_ int methods)
		590	{
519	if (!ev_method)	591	if (!method)
520	{	592	{
521	#if EV_USE_MONOTONIC	593	#if EV_USE_MONOTONIC
522	{	594	{
523	struct timespec ts;	595	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	596	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	597	have_monotonic = 1;
526	}	598	}
527	#endif	599	#endif
528		600
529	ev_now = ev_time ();	601	rt_now = ev_time ();
530	now = get_clock ();	602	mn_now = get_clock ();
531	now_floor = now;	603	now_floor = mn_now;
532	diff = ev_now - now;	604	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		605
537	if (methods == EVMETHOD_AUTO)	606	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	607	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	608	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	609	else
541	methods = EVMETHOD_ANY;	610	methods = EVMETHOD_ANY;
542		611
543	ev_method = 0;	612	method = 0;
		613	#if EV_USE_KQUEUE
		614	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		615	#endif
544	#if EV_USE_EPOLL	616	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	617	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	618	#endif
547	#if EV_USE_POLL	619	#if EV_USE_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	620	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	621	#endif
550	#if EV_USE_SELECT	622	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	623	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	624	#endif
		625	}
		626	}
553		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
554	if (ev_method)	715	if (ev_method (EV_A))
555	{	716	{
556	ev_watcher_init (&sigev, sigcb);	717	ev_watcher_init (&sigev, sigcb);
		718	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	719	siginit (EV_A);
558		720
		721	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	722	ev_signal_init (&childev, childcb, SIGCHLD);
		723	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	724	ev_signal_start (EV_A_ &childev);
		725	ev_unref (EV_A); /* child watcher should not keep loop alive */
		726	#endif
561	}	727	}
		728	else
		729	default_loop = 0;
562	}	730	}
563		731
564	return ev_method;	732	return default_loop;
565	}	733	}
566		734
567	/*****************************************************************************/
568
569	void	735	void
570	ev_fork_prepare (void)	736	ev_default_destroy (void)
571	{	737	{
572	/* nop */	738	#if EV_MULTIPLICITY
573	}	739	struct ev_loop *loop = default_loop;
574
575	void
576	ev_fork_parent (void)
577	{
578	/* nop */
579	}
580
581	void
582	ev_fork_child (void)
583	{
584	#if EV_USE_EPOLL
585	if (ev_method == EVMETHOD_EPOLL)
586	epoll_postfork_child ();
587	#endif	740	#endif
588		741
		742	ev_ref (EV_A); /* child watcher */
		743	ev_signal_stop (EV_A_ &childev);
		744
		745	ev_ref (EV_A); /* signal watcher */
589	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);
590	close (sigpipe [0]);	764	close (sigpipe [0]);
591	close (sigpipe [1]);	765	close (sigpipe [1]);
592	pipe (sigpipe);	766	pipe (sigpipe);
		767
		768	ev_ref (EV_A); /* signal watcher */
593	siginit ();	769	siginit (EV_A);
594	}	770	}
595		771
596	/*****************************************************************************/	772	/*****************************************************************************/
597		773
598	static void	774	static void
599	call_pending (void)	775	call_pending (EV_P)
600	{	776	{
601	int pri;	777	int pri;
602		778
603	for (pri = NUMPRI; pri--; )	779	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	780	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	782	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		783
608	if (p->w)	784	if (p->w)
609	{	785	{
610	p->w->pending = 0;	786	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	787	p->w->cb (EV_A_ p->w, p->events);
612	}	788	}
613	}	789	}
614	}	790	}
615		791
616	static void	792	static void
617	timers_reify (void)	793	timers_reify (EV_P)
618	{	794	{
619	while (timercnt && timers [0]->at <= now)	795	while (timercnt && timers [0]->at <= mn_now)
620	{	796	{
621	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)));
622		800
623	/* first reschedule or stop timer */	801	/* first reschedule or stop timer */
624	if (w->repeat)	802	if (w->repeat)
625	{	803	{
626	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.));
627	w->at = now + w->repeat;	805	w->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	806	downheap ((WT *)timers, timercnt, 0);
629	}	807	}
630	else	808	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	809	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		810
633	event ((W)w, EV_TIMEOUT);	811	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	812	}
635	}	813	}
636		814
637	static void	815	static void
638	periodics_reify (void)	816	periodics_reify (EV_P)
639	{	817	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	818	while (periodiccnt && periodics [0]->at <= rt_now)
641	{	819	{
642	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)));
643		823
644	/* first reschedule or stop timer */	824	/* first reschedule or stop timer */
645	if (w->interval)	825	if (w->interval)
646	{	826	{
647	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;
648	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));
649	downheap ((WT *)periodics, periodiccnt, 0);	829	downheap ((WT *)periodics, periodiccnt, 0);
650	}	830	}
651	else	831	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	832	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		833
654	event ((W)w, EV_PERIODIC);	834	event (EV_A_ (W)w, EV_PERIODIC);
655	}	835	}
656	}	836	}
657		837
658	static void	838	static void
659	periodics_reschedule (ev_tstamp diff)	839	periodics_reschedule (EV_P)
660	{	840	{
661	int i;	841	int i;
662		842
663	/* adjust periodics after time jump */	843	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	844	for (i = 0; i < periodiccnt; ++i)
665	{	845	{
666	struct ev_periodic *w = periodics [i];	846	struct ev_periodic *w = periodics [i];
667		847
668	if (w->interval)	848	if (w->interval)
669	{	849	{
670	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;
671		851
672	if (fabs (diff) >= 1e-4)	852	if (fabs (diff) >= 1e-4)
673	{	853	{
674	ev_periodic_stop (w);	854	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	855	ev_periodic_start (EV_A_ w);
676		856
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	857	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	858	}
679	}	859	}
680	}	860	}
681	}	861	}
682		862
683	static int	863	inline int
684	time_update_monotonic (void)	864	time_update_monotonic (EV_P)
685	{	865	{
686	now = get_clock ();	866	mn_now = get_clock ();
687		867
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	868	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	869	{
690	ev_now = now + diff;	870	rt_now = rtmn_diff + mn_now;
691	return 0;	871	return 0;
692	}	872	}
693	else	873	else
694	{	874	{
695	now_floor = now;	875	now_floor = mn_now;
696	ev_now = ev_time ();	876	rt_now = ev_time ();
697	return 1;	877	return 1;
698	}	878	}
699	}	879	}
700		880
701	static void	881	static void
702	time_update (void)	882	time_update (EV_P)
703	{	883	{
704	int i;	884	int i;
705		885
706	#if EV_USE_MONOTONIC	886	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	887	if (expect_true (have_monotonic))
708	{	888	{
709	if (time_update_monotonic ())	889	if (time_update_monotonic (EV_A))
710	{	890	{
711	ev_tstamp odiff = diff;	891	ev_tstamp odiff = rtmn_diff;
712		892
713	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 */
714	{	894	{
715	diff = ev_now - now;	895	rtmn_diff = rt_now - mn_now;
716		896
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	897	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	898	return; /* all is well */
719		899
720	ev_now = ev_time ();	900	rt_now = ev_time ();
721	now = get_clock ();	901	mn_now = get_clock ();
722	now_floor = now;	902	now_floor = mn_now;
723	}	903	}
724		904
725	periodics_reschedule (diff - odiff);	905	periodics_reschedule (EV_A);
726	/* 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) */
727	}	908	}
728	}	909	}
729	else	910	else
730	#endif	911	#endif
731	{	912	{
732	ev_now = ev_time ();	913	rt_now = ev_time ();
733		914
734	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))
735	{	916	{
736	periodics_reschedule (ev_now - now);	917	periodics_reschedule (EV_A);
737		918
738	/* 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 */
739	for (i = 0; i < timercnt; ++i)	920	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	921	timers [i]->at += rt_now - mn_now;
741	}	922	}
742		923
743	now = ev_now;	924	mn_now = rt_now;
744	}	925	}
745	}	926	}
746		927
747	int ev_loop_done;	928	void
		929	ev_ref (EV_P)
		930	{
		931	++activecnt;
		932	}
748		933
		934	void
		935	ev_unref (EV_P)
		936	{
		937	--activecnt;
		938	}
		939
		940	static int loop_done;
		941
		942	void
749	void ev_loop (int flags)	943	ev_loop (EV_P_ int flags)
750	{	944	{
751	double block;	945	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	946	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		947
754	do	948	do
755	{	949	{
756	/* queue check watchers (and execute them) */	950	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	951	if (expect_false (preparecnt))
758	{	952	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	953	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	954	call_pending (EV_A);
761	}	955	}
762		956
763	/* update fd-related kernel structures */	957	/* update fd-related kernel structures */
764	fd_reify ();	958	fd_reify (EV_A);
765		959
766	/* calculate blocking time */	960	/* calculate blocking time */
767		961
768	/* 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
769	always have timers, we just calculate it always */	963	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	964	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	965	if (expect_true (have_monotonic))
772	time_update_monotonic ();	966	time_update_monotonic (EV_A);
773	else	967	else
774	#endif	968	#endif
775	{	969	{
776	ev_now = ev_time ();	970	rt_now = ev_time ();
777	now = ev_now;	971	mn_now = rt_now;
778	}	972	}
779		973
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	974	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	975	block = 0.;
782	else	976	else
783	{	977	{
784	block = MAX_BLOCKTIME;	978	block = MAX_BLOCKTIME;
785		979
786	if (timercnt)	980	if (timercnt)
787	{	981	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	982	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
789	if (block > to) block = to;	983	if (block > to) block = to;
790	}	984	}
791		985
792	if (periodiccnt)	986	if (periodiccnt)
793	{	987	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	988	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
795	if (block > to) block = to;	989	if (block > to) block = to;
796	}	990	}
797		991
798	if (block < 0.) block = 0.;	992	if (block < 0.) block = 0.;
799	}	993	}
800		994
801	method_poll (block);	995	method_poll (EV_A_ block);
802		996
803	/* update ev_now, do magic */	997	/* update rt_now, do magic */
804	time_update ();	998	time_update (EV_A);
805		999
806	/* queue pending timers and reschedule them */	1000	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	1001	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	1002	periodics_reify (EV_A); /* absolute timers called first */
809		1003
810	/* queue idle watchers unless io or timers are pending */	1004	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	1005	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	1006	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		1007
814	/* queue check watchers, to be executed first */	1008	/* queue check watchers, to be executed first */
815	if (checkcnt)	1009	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	1010	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		1011
818	call_pending ();	1012	call_pending (EV_A);
819	}	1013	}
820	while (!ev_loop_done);	1014	while (activecnt && !loop_done);
821		1015
822	if (ev_loop_done != 2)	1016	if (loop_done != 2)
823	ev_loop_done = 0;	1017	loop_done = 0;
		1018	}
		1019
		1020	void
		1021	ev_unloop (EV_P_ int how)
		1022	{
		1023	loop_done = how;
824	}	1024	}
825		1025
826	/*****************************************************************************/	1026	/*****************************************************************************/
827		1027
828	static void	1028	inline void
829	wlist_add (WL *head, WL elem)	1029	wlist_add (WL *head, WL elem)
830	{	1030	{
831	elem->next = *head;	1031	elem->next = *head;
832	*head = elem;	1032	*head = elem;
833	}	1033	}
834		1034
835	static void	1035	inline void
836	wlist_del (WL *head, WL elem)	1036	wlist_del (WL *head, WL elem)
837	{	1037	{
838	while (*head)	1038	while (*head)
839	{	1039	{
840	if (*head == elem)	1040	if (*head == elem)
…		…
845		1045
846	head = &(*head)->next;	1046	head = &(*head)->next;
847	}	1047	}
848	}	1048	}
849		1049
850	static void	1050	inline void
851	ev_clear_pending (W w)	1051	ev_clear_pending (EV_P_ W w)
852	{	1052	{
853	if (w->pending)	1053	if (w->pending)
854	{	1054	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1055	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1056	w->pending = 0;
857	}	1057	}
858	}	1058	}
859		1059
860	static void	1060	inline void
861	ev_start (W w, int active)	1061	ev_start (EV_P_ W w, int active)
862	{	1062	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1063	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1064	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1065
866	w->active = active;	1066	w->active = active;
		1067	ev_ref (EV_A);
867	}	1068	}
868		1069
869	static void	1070	inline void
870	ev_stop (W w)	1071	ev_stop (EV_P_ W w)
871	{	1072	{
		1073	ev_unref (EV_A);
872	w->active = 0;	1074	w->active = 0;
873	}	1075	}
874		1076
875	/*****************************************************************************/	1077	/*****************************************************************************/
876		1078
877	void	1079	void
878	ev_io_start (struct ev_io *w)	1080	ev_io_start (EV_P_ struct ev_io *w)
879	{	1081	{
880	int fd = w->fd;	1082	int fd = w->fd;
881		1083
882	if (ev_is_active (w))	1084	if (ev_is_active (w))
883	return;	1085	return;
884		1086
885	assert (("ev_io_start called with negative fd", fd >= 0));	1087	assert (("ev_io_start called with negative fd", fd >= 0));
886		1088
887	ev_start ((W)w, 1);	1089	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1090	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1091	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1092
891	fd_change (fd);	1093	fd_change (EV_A_ fd);
892	}	1094	}
893		1095
894	void	1096	void
895	ev_io_stop (struct ev_io *w)	1097	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1098	{
897	ev_clear_pending ((W)w);	1099	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1100	if (!ev_is_active (w))
899	return;	1101	return;
900		1102
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1103	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1104	ev_stop (EV_A_ (W)w);
903		1105
904	fd_change (w->fd);	1106	fd_change (EV_A_ w->fd);
905	}	1107	}
906		1108
907	void	1109	void
908	ev_timer_start (struct ev_timer *w)	1110	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1111	{
910	if (ev_is_active (w))	1112	if (ev_is_active (w))
911	return;	1113	return;
912		1114
913	w->at += now;	1115	w->at += mn_now;
914		1116
915	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.));
916		1118
917	ev_start ((W)w, ++timercnt);	1119	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1120	array_needsize (timers, timermax, timercnt, );
919	timers [timercnt - 1] = w;	1121	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1122	upheap ((WT *)timers, timercnt - 1);
921	}	1123	}
922		1124
923	void	1125	void
924	ev_timer_stop (struct ev_timer *w)	1126	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1127	{
926	ev_clear_pending ((W)w);	1128	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1129	if (!ev_is_active (w))
928	return;	1130	return;
929		1131
930	if (w->active < timercnt--)	1132	if (w->active < timercnt--)
931	{	1133	{
…		…
933	downheap ((WT *)timers, timercnt, w->active - 1);	1135	downheap ((WT *)timers, timercnt, w->active - 1);
934	}	1136	}
935		1137
936	w->at = w->repeat;	1138	w->at = w->repeat;
937		1139
938	ev_stop ((W)w);	1140	ev_stop (EV_A_ (W)w);
939	}	1141	}
940		1142
941	void	1143	void
942	ev_timer_again (struct ev_timer *w)	1144	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1145	{
944	if (ev_is_active (w))	1146	if (ev_is_active (w))
945	{	1147	{
946	if (w->repeat)	1148	if (w->repeat)
947	{	1149	{
948	w->at = now + w->repeat;	1150	w->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1151	downheap ((WT *)timers, timercnt, w->active - 1);
950	}	1152	}
951	else	1153	else
952	ev_timer_stop (w);	1154	ev_timer_stop (EV_A_ w);
953	}	1155	}
954	else if (w->repeat)	1156	else if (w->repeat)
955	ev_timer_start (w);	1157	ev_timer_start (EV_A_ w);
956	}	1158	}
957		1159
958	void	1160	void
959	ev_periodic_start (struct ev_periodic *w)	1161	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1162	{
961	if (ev_is_active (w))	1163	if (ev_is_active (w))
962	return;	1164	return;
963		1165
964	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.));
965		1167
966	/* 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 */
967	if (w->interval)	1169	if (w->interval)
968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1170	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
969		1171
970	ev_start ((W)w, ++periodiccnt);	1172	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1173	array_needsize (periodics, periodicmax, periodiccnt, );
972	periodics [periodiccnt - 1] = w;	1174	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1175	upheap ((WT *)periodics, periodiccnt - 1);
974	}	1176	}
975		1177
976	void	1178	void
977	ev_periodic_stop (struct ev_periodic *w)	1179	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1180	{
979	ev_clear_pending ((W)w);	1181	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1182	if (!ev_is_active (w))
981	return;	1183	return;
982		1184
983	if (w->active < periodiccnt--)	1185	if (w->active < periodiccnt--)
984	{	1186	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1187	periodics [w->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1188	downheap ((WT *)periodics, periodiccnt, w->active - 1);
987	}	1189	}
988		1190
989	ev_stop ((W)w);	1191	ev_stop (EV_A_ (W)w);
990	}	1192	}
991		1193
992	void	1194	void
993	ev_signal_start (struct ev_signal *w)	1195	ev_idle_start (EV_P_ struct ev_idle *w)
994	{	1196	{
995	if (ev_is_active (w))	1197	if (ev_is_active (w))
996	return;	1198	return;
997		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
998	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));
999		1274
1000	ev_start ((W)w, 1);	1275	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1276	array_needsize (signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1277	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1278
1004	if (!w->next)	1279	if (!w->next)
1005	{	1280	{
1006	struct sigaction sa;	1281	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1282	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1283	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1284	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1285	sigaction (w->signum, &sa, 0);
1011	}	1286	}
1012	}	1287	}
1013		1288
1014	void	1289	void
1015	ev_signal_stop (struct ev_signal *w)	1290	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1291	{
1017	ev_clear_pending ((W)w);	1292	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1293	if (!ev_is_active (w))
1019	return;	1294	return;
1020		1295
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1296	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1297	ev_stop (EV_A_ (W)w);
1023		1298
1024	if (!signals [w->signum - 1].head)	1299	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1300	signal (w->signum, SIG_DFL);
1026	}	1301	}
1027		1302
1028	void	1303	void
1029	ev_idle_start (struct ev_idle *w)	1304	ev_child_start (EV_P_ struct ev_child *w)
1030	{	1305	{
		1306	#if EV_MULTIPLICITY
		1307	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1308	#endif
1031	if (ev_is_active (w))	1309	if (ev_is_active (w))
1032	return;	1310	return;
1033		1311
1034	ev_start ((W)w, ++idlecnt);	1312	ev_start (EV_A_ (W)w, 1);
1035	array_needsize (idles, idlemax, idlecnt, );	1313	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1036	idles [idlecnt - 1] = w;
1037	}	1314	}
1038		1315
1039	void	1316	void
1040	ev_idle_stop (struct ev_idle *w)	1317	ev_child_stop (EV_P_ struct ev_child *w)
1041	{	1318	{
1042	ev_clear_pending ((W)w);	1319	ev_clear_pending (EV_A_ (W)w);
1043	if (ev_is_active (w))	1320	if (ev_is_active (w))
1044	return;	1321	return;
1045		1322
1046	idles [w->active - 1] = idles [--idlecnt];
1047	ev_stop ((W)w);
1048	}
1049
1050	void
1051	ev_prepare_start (struct ev_prepare *w)
1052	{
1053	if (ev_is_active (w))
1054	return;
1055
1056	ev_start ((W)w, ++preparecnt);
1057	array_needsize (prepares, preparemax, preparecnt, );
1058	prepares [preparecnt - 1] = w;
1059	}
1060
1061	void
1062	ev_prepare_stop (struct ev_prepare *w)
1063	{
1064	ev_clear_pending ((W)w);
1065	if (ev_is_active (w))
1066	return;
1067
1068	prepares [w->active - 1] = prepares [--preparecnt];
1069	ev_stop ((W)w);
1070	}
1071
1072	void
1073	ev_check_start (struct ev_check *w)
1074	{
1075	if (ev_is_active (w))
1076	return;
1077
1078	ev_start ((W)w, ++checkcnt);
1079	array_needsize (checks, checkmax, checkcnt, );
1080	checks [checkcnt - 1] = w;
1081	}
1082
1083	void
1084	ev_check_stop (struct ev_check *w)
1085	{
1086	ev_clear_pending ((W)w);
1087	if (ev_is_active (w))
1088	return;
1089
1090	checks [w->active - 1] = checks [--checkcnt];
1091	ev_stop ((W)w);
1092	}
1093
1094	void
1095	ev_child_start (struct ev_child *w)
1096	{
1097	if (ev_is_active (w))
1098	return;
1099
1100	ev_start ((W)w, 1);
1101	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1102	}
1103
1104	void
1105	ev_child_stop (struct ev_child *w)
1106	{
1107	ev_clear_pending ((W)w);
1108	if (ev_is_active (w))
1109	return;
1110
1111	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1323	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1324	ev_stop (EV_A_ (W)w);
1113	}	1325	}
1114		1326
1115	/*****************************************************************************/	1327	/*****************************************************************************/
1116		1328
1117	struct ev_once	1329	struct ev_once
…		…
1121	void (*cb)(int revents, void *arg);	1333	void (*cb)(int revents, void *arg);
1122	void *arg;	1334	void *arg;
1123	};	1335	};
1124		1336
1125	static void	1337	static void
1126	once_cb (struct ev_once *once, int revents)	1338	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1339	{
1128	void (*cb)(int revents, void *arg) = once->cb;	1340	void (*cb)(int revents, void *arg) = once->cb;
1129	void *arg = once->arg;	1341	void *arg = once->arg;
1130		1342
1131	ev_io_stop (&once->io);	1343	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1344	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1345	free (once);
1134		1346
1135	cb (revents, arg);	1347	cb (revents, arg);
1136	}	1348	}
1137		1349
1138	static void	1350	static void
1139	once_cb_io (struct ev_io *w, int revents)	1351	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1352	{
1141	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);
1142	}	1354	}
1143		1355
1144	static void	1356	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1357	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1358	{
1147	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);
1148	}	1360	}
1149		1361
1150	void	1362	void
1151	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)
1152	{	1364	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1365	struct ev_once *once = malloc (sizeof (struct ev_once));
1154		1366
1155	if (!once)	1367	if (!once)
1156	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1368	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1161		1373
1162	ev_watcher_init (&once->io, once_cb_io);	1374	ev_watcher_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1375	if (fd >= 0)
1164	{	1376	{
1165	ev_io_set (&once->io, fd, events);	1377	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1378	ev_io_start (EV_A_ &once->io);
1167	}	1379	}
1168		1380
1169	ev_watcher_init (&once->to, once_cb_to);	1381	ev_watcher_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1382	if (timeout >= 0.)
1171	{	1383	{
1172	ev_timer_set (&once->to, timeout, 0.);	1384	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1385	ev_timer_start (EV_A_ &once->to);
1174	}	1386	}
1175	}	1387	}
1176	}	1388	}
1177		1389
1178	/*****************************************************************************/
1179
1180	#if 0
1181
1182	struct ev_io wio;
1183
1184	static void
1185	sin_cb (struct ev_io *w, int revents)
1186	{
1187	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1188	}
1189
1190	static void
1191	ocb (struct ev_timer *w, int revents)
1192	{
1193	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1194	ev_timer_stop (w);
1195	ev_timer_start (w);
1196	}
1197
1198	static void
1199	scb (struct ev_signal *w, int revents)
1200	{
1201	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1202	ev_io_stop (&wio);
1203	ev_io_start (&wio);
1204	}
1205
1206	static void
1207	gcb (struct ev_signal *w, int revents)
1208	{
1209	fprintf (stderr, "generic %x\n", revents);
1210
1211	}
1212
1213	int main (void)
1214	{
1215	ev_init (0);
1216
1217	ev_io_init (&wio, sin_cb, 0, EV_READ);
1218	ev_io_start (&wio);
1219
1220	struct ev_timer t[10000];
1221
1222	#if 0
1223	int i;
1224	for (i = 0; i < 10000; ++i)
1225	{
1226	struct ev_timer *w = t + i;
1227	ev_watcher_init (w, ocb, i);
1228	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1229	ev_timer_start (w);
1230	if (drand48 () < 0.5)
1231	ev_timer_stop (w);
1232	}
1233	#endif
1234
1235	struct ev_timer t1;
1236	ev_timer_init (&t1, ocb, 5, 10);
1237	ev_timer_start (&t1);
1238
1239	struct ev_signal sig;
1240	ev_signal_init (&sig, scb, SIGQUIT);
1241	ev_signal_start (&sig);
1242
1243	struct ev_check cw;
1244	ev_check_init (&cw, gcb);
1245	ev_check_start (&cw);
1246
1247	struct ev_idle iw;
1248	ev_idle_init (&iw, gcb);
1249	ev_idle_start (&iw);
1250
1251	ev_loop (0);
1252
1253	return 0;
1254	}
1255
1256	#endif
1257
1258
1259
1260

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