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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 1.57 by root, Sun Nov 4 16:43:53 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE	28	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.	29	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30	*/	30	*/
31	#if EV_USE_CONFIG_H	31	#ifndef EV_STANDALONE
32	# include "config.h"	32	# include "config.h"
33	#endif	33	#endif
34		34
35	#include <math.h>	35	#include <math.h>
36	#include <stdlib.h>	36	#include <stdlib.h>
…		…
42	#include <stdio.h>	42	#include <stdio.h>
43		43
44	#include <assert.h>	44	#include <assert.h>
45	#include <errno.h>	45	#include <errno.h>
46	#include <sys/types.h>	46	#include <sys/types.h>
		47	#ifndef WIN32
47	#include <sys/wait.h>	48	# include <sys/wait.h>
		49	#endif
48	#include <sys/time.h>	50	#include <sys/time.h>
49	#include <time.h>	51	#include <time.h>
50		52
51	/**/	53	/**/
52		54
…		…
56		58
57	#ifndef EV_USE_SELECT	59	#ifndef EV_USE_SELECT
58	# define EV_USE_SELECT 1	60	# define EV_USE_SELECT 1
59	#endif	61	#endif
60		62
61	#ifndef EV_USE_POLL	63	#ifndef EV_USEV_POLL
62	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */
63	#endif	65	#endif
64		66
65	#ifndef EV_USE_EPOLL	67	#ifndef EV_USE_EPOLL
66	# define EV_USE_EPOLL 0	68	# define EV_USE_EPOLL 0
		69	#endif
		70
		71	#ifndef EV_USE_KQUEUE
		72	# define EV_USE_KQUEUE 0
67	#endif	73	#endif
68		74
69	#ifndef EV_USE_REALTIME	75	#ifndef EV_USE_REALTIME
70	# define EV_USE_REALTIME 1	76	# define EV_USE_REALTIME 1
71	#endif	77	#endif
…		…
107		113
108	typedef struct ev_watcher *W;	114	typedef struct ev_watcher *W;
109	typedef struct ev_watcher_list *WL;	115	typedef struct ev_watcher_list *WL;
110	typedef struct ev_watcher_time *WT;	116	typedef struct ev_watcher_time *WT;
111		117
112	static ev_tstamp now_floor, now, diff; /* monotonic clock */	118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
113	ev_tstamp ev_now;
114	int ev_method;
115
116	static int have_monotonic; /* runtime */
117
118	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */
119	static void (*method_modify)(int fd, int oev, int nev);
120	static void (*method_poll)(ev_tstamp timeout);
121		119
122	/*****************************************************************************/	120	/*****************************************************************************/
123		121
124	ev_tstamp	122	typedef struct
		123	{
		124	struct ev_watcher_list *head;
		125	unsigned char events;
		126	unsigned char reify;
		127	} ANFD;
		128
		129	typedef struct
		130	{
		131	W w;
		132	int events;
		133	} ANPENDING;
		134
		135	#if EV_MULTIPLICITY
		136
		137	struct ev_loop
		138	{
		139	# define VAR(name,decl) decl;
		140	# include "ev_vars.h"
		141	};
		142	# undef VAR
		143	# include "ev_wrap.h"
		144
		145	#else
		146
		147	# define VAR(name,decl) static decl;
		148	# include "ev_vars.h"
		149	# undef VAR
		150
		151	#endif
		152
		153	/*****************************************************************************/
		154
		155	inline ev_tstamp
125	ev_time (void)	156	ev_time (void)
126	{	157	{
127	#if EV_USE_REALTIME	158	#if EV_USE_REALTIME
128	struct timespec ts;	159	struct timespec ts;
129	clock_gettime (CLOCK_REALTIME, &ts);	160	clock_gettime (CLOCK_REALTIME, &ts);
…		…
133	gettimeofday (&tv, 0);	164	gettimeofday (&tv, 0);
134	return tv.tv_sec + tv.tv_usec * 1e-6;	165	return tv.tv_sec + tv.tv_usec * 1e-6;
135	#endif	166	#endif
136	}	167	}
137		168
138	static ev_tstamp	169	inline ev_tstamp
139	get_clock (void)	170	get_clock (void)
140	{	171	{
141	#if EV_USE_MONOTONIC	172	#if EV_USE_MONOTONIC
142	if (expect_true (have_monotonic))	173	if (expect_true (have_monotonic))
143	{	174	{
…		…
146	return ts.tv_sec + ts.tv_nsec * 1e-9;	177	return ts.tv_sec + ts.tv_nsec * 1e-9;
147	}	178	}
148	#endif	179	#endif
149		180
150	return ev_time ();	181	return ev_time ();
		182	}
		183
		184	ev_tstamp
		185	ev_now (EV_P)
		186	{
		187	return rt_now;
151	}	188	}
152		189
153	#define array_roundsize(base,n) ((n) | 4 & ~3)	190	#define array_roundsize(base,n) ((n) | 4 & ~3)
154		191
155	#define array_needsize(base,cur,cnt,init) \	192	#define array_needsize(base,cur,cnt,init) \
…		…
167	cur = newcnt; \	204	cur = newcnt; \
168	}	205	}
169		206
170	/*****************************************************************************/	207	/*****************************************************************************/
171		208
172	typedef struct
173	{
174	struct ev_io *head;
175	unsigned char events;
176	unsigned char reify;
177	} ANFD;
178
179	static ANFD *anfds;
180	static int anfdmax;
181
182	static void	209	static void
183	anfds_init (ANFD *base, int count)	210	anfds_init (ANFD *base, int count)
184	{	211	{
185	while (count--)	212	while (count--)
186	{	213	{
…		…
190		217
191	++base;	218	++base;
192	}	219	}
193	}	220	}
194		221
195	typedef struct
196	{
197	W w;
198	int events;
199	} ANPENDING;
200
201	static ANPENDING *pendings [NUMPRI];
202	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
203
204	static void	222	static void
205	event (W w, int events)	223	event (EV_P_ W w, int events)
206	{	224	{
207	if (w->pending)	225	if (w->pending)
208	{	226	{
209	pendings [ABSPRI (w)][w->pending - 1].events |= events;	227	pendings [ABSPRI (w)][w->pending - 1].events |= events;
210	return;	228	return;
…		…
215	pendings [ABSPRI (w)][w->pending - 1].w = w;	233	pendings [ABSPRI (w)][w->pending - 1].w = w;
216	pendings [ABSPRI (w)][w->pending - 1].events = events;	234	pendings [ABSPRI (w)][w->pending - 1].events = events;
217	}	235	}
218		236
219	static void	237	static void
220	queue_events (W *events, int eventcnt, int type)	238	queue_events (EV_P_ W *events, int eventcnt, int type)
221	{	239	{
222	int i;	240	int i;
223		241
224	for (i = 0; i < eventcnt; ++i)	242	for (i = 0; i < eventcnt; ++i)
225	event (events [i], type);	243	event (EV_A_ events [i], type);
226	}	244	}
227		245
228	static void	246	static void
229	fd_event (int fd, int events)	247	fd_event (EV_P_ int fd, int events)
230	{	248	{
231	ANFD *anfd = anfds + fd;	249	ANFD *anfd = anfds + fd;
232	struct ev_io *w;	250	struct ev_io *w;
233		251
234	for (w = anfd->head; w; w = w->next)	252	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
235	{	253	{
236	int ev = w->events & events;	254	int ev = w->events & events;
237		255
238	if (ev)	256	if (ev)
239	event ((W)w, ev);	257	event (EV_A_ (W)w, ev);
240	}	258	}
241	}	259	}
242		260
243	/*****************************************************************************/	261	/*****************************************************************************/
244		262
245	static int *fdchanges;
246	static int fdchangemax, fdchangecnt;
247
248	static void	263	static void
249	fd_reify (void)	264	fd_reify (EV_P)
250	{	265	{
251	int i;	266	int i;
252		267
253	for (i = 0; i < fdchangecnt; ++i)	268	for (i = 0; i < fdchangecnt; ++i)
254	{	269	{
…		…
256	ANFD *anfd = anfds + fd;	271	ANFD *anfd = anfds + fd;
257	struct ev_io *w;	272	struct ev_io *w;
258		273
259	int events = 0;	274	int events = 0;
260		275
261	for (w = anfd->head; w; w = w->next)	276	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
262	events |= w->events;	277	events |= w->events;
263		278
264	anfd->reify = 0;	279	anfd->reify = 0;
265		280
266	if (anfd->events != events)	281	if (anfd->events != events)
267	{	282	{
268	method_modify (fd, anfd->events, events);	283	method_modify (EV_A_ fd, anfd->events, events);
269	anfd->events = events;	284	anfd->events = events;
270	}	285	}
271	}	286	}
272		287
273	fdchangecnt = 0;	288	fdchangecnt = 0;
274	}	289	}
275		290
276	static void	291	static void
277	fd_change (int fd)	292	fd_change (EV_P_ int fd)
278	{	293	{
279	if (anfds [fd].reify || fdchangecnt < 0)	294	if (anfds [fd].reify || fdchangecnt < 0)
280	return;	295	return;
281		296
282	anfds [fd].reify = 1;	297	anfds [fd].reify = 1;
…		…
285	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );
286	fdchanges [fdchangecnt - 1] = fd;	301	fdchanges [fdchangecnt - 1] = fd;
287	}	302	}
288		303
289	static void	304	static void
290	fd_kill (int fd)	305	fd_kill (EV_P_ int fd)
291	{	306	{
292	struct ev_io *w;	307	struct ev_io *w;
293		308
294	printf ("killing fd %d\n", fd);//D
295	while ((w = anfds [fd].head))	309	while ((w = (struct ev_io *)anfds [fd].head))
296	{	310	{
297	ev_io_stop (w);	311	ev_io_stop (EV_A_ w);
298	event ((W)w, EV_ERROR | EV_READ | EV_WRITE);	312	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
299	}	313	}
300	}	314	}
301		315
302	/* called on EBADF to verify fds */	316	/* called on EBADF to verify fds */
303	static void	317	static void
304	fd_ebadf (void)	318	fd_ebadf (EV_P)
305	{	319	{
306	int fd;	320	int fd;
307		321
308	for (fd = 0; fd < anfdmax; ++fd)	322	for (fd = 0; fd < anfdmax; ++fd)
309	if (anfds [fd].events)	323	if (anfds [fd].events)
310	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)
311	fd_kill (fd);	325	fd_kill (EV_A_ fd);
312	}	326	}
313		327
314	/* called on ENOMEM in select/poll to kill some fds and retry */	328	/* called on ENOMEM in select/poll to kill some fds and retry */
315	static void	329	static void
316	fd_enomem (void)	330	fd_enomem (EV_P)
317	{	331	{
318	int fd = anfdmax;	332	int fd = anfdmax;
319		333
320	while (fd--)	334	while (fd--)
321	if (anfds [fd].events)	335	if (anfds [fd].events)
322	{	336	{
323	close (fd);	337	close (fd);
324	fd_kill (fd);	338	fd_kill (EV_A_ fd);
325	return;	339	return;
326	}	340	}
327	}	341	}
328		342
		343	/* susually called after fork if method needs to re-arm all fds from scratch */
		344	static void
		345	fd_rearm_all (EV_P)
		346	{
		347	int fd;
		348
		349	/* this should be highly optimised to not do anything but set a flag */
		350	for (fd = 0; fd < anfdmax; ++fd)
		351	if (anfds [fd].events)
		352	{
		353	anfds [fd].events = 0;
		354	fd_change (fd);
		355	}
		356	}
		357
329	/*****************************************************************************/	358	/*****************************************************************************/
330		359
331	static struct ev_timer **timers;
332	static int timermax, timercnt;
333
334	static struct ev_periodic **periodics;
335	static int periodicmax, periodiccnt;
336
337	static void	360	static void
338	upheap (WT *timers, int k)	361	upheap (WT *heap, int k)
339	{	362	{
340	WT w = timers [k];	363	WT w = heap [k];
341		364
342	while (k && timers [k >> 1]->at > w->at)	365	while (k && heap [k >> 1]->at > w->at)
343	{	366	{
344	timers [k] = timers [k >> 1];	367	heap [k] = heap [k >> 1];
345	timers [k]->active = k + 1;	368	heap [k]->active = k + 1;
346	k >>= 1;	369	k >>= 1;
347	}	370	}
348		371
349	timers [k] = w;	372	heap [k] = w;
350	timers [k]->active = k + 1;	373	heap [k]->active = k + 1;
351		374
352	}	375	}
353		376
354	static void	377	static void
355	downheap (WT *timers, int N, int k)	378	downheap (WT *heap, int N, int k)
356	{	379	{
357	WT w = timers [k];	380	WT w = heap [k];
358		381
359	while (k < (N >> 1))	382	while (k < (N >> 1))
360	{	383	{
361	int j = k << 1;	384	int j = k << 1;
362		385
363	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	386	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
364	++j;	387	++j;
365		388
366	if (w->at <= timers [j]->at)	389	if (w->at <= heap [j]->at)
367	break;	390	break;
368		391
369	timers [k] = timers [j];	392	heap [k] = heap [j];
370	timers [k]->active = k + 1;	393	heap [k]->active = k + 1;
371	k = j;	394	k = j;
372	}	395	}
373		396
374	timers [k] = w;	397	heap [k] = w;
375	timers [k]->active = k + 1;	398	heap [k]->active = k + 1;
376	}	399	}
377		400
378	/*****************************************************************************/	401	/*****************************************************************************/
379		402
380	typedef struct	403	typedef struct
381	{	404	{
382	struct ev_signal *head;	405	struct ev_watcher_list *head;
383	sig_atomic_t volatile gotsig;	406	sig_atomic_t volatile gotsig;
384	} ANSIG;	407	} ANSIG;
385		408
386	static ANSIG *signals;	409	static ANSIG *signals;
387	static int signalmax;	410	static int signalmax;
388		411
389	static int sigpipe [2];	412	static int sigpipe [2];
390	static sig_atomic_t volatile gotsig;	413	static sig_atomic_t volatile gotsig;
391	static struct ev_io sigev;
392		414
393	static void	415	static void
394	signals_init (ANSIG *base, int count)	416	signals_init (ANSIG *base, int count)
395	{	417	{
396	while (count--)	418	while (count--)
…		…
407	{	429	{
408	signals [signum - 1].gotsig = 1;	430	signals [signum - 1].gotsig = 1;
409		431
410	if (!gotsig)	432	if (!gotsig)
411	{	433	{
		434	int old_errno = errno;
412	gotsig = 1;	435	gotsig = 1;
413	write (sigpipe [1], &signum, 1);	436	write (sigpipe [1], &signum, 1);
		437	errno = old_errno;
414	}	438	}
415	}	439	}
416		440
417	static void	441	static void
418	sigcb (struct ev_io *iow, int revents)	442	sigcb (EV_P_ struct ev_io *iow, int revents)
419	{	443	{
420	struct ev_signal *w;	444	struct ev_watcher_list *w;
421	int signum;	445	int signum;
422		446
423	read (sigpipe [0], &revents, 1);	447	read (sigpipe [0], &revents, 1);
424	gotsig = 0;	448	gotsig = 0;
425		449
…		…
427	if (signals [signum].gotsig)	451	if (signals [signum].gotsig)
428	{	452	{
429	signals [signum].gotsig = 0;	453	signals [signum].gotsig = 0;
430		454
431	for (w = signals [signum].head; w; w = w->next)	455	for (w = signals [signum].head; w; w = w->next)
432	event ((W)w, EV_SIGNAL);	456	event (EV_A_ (W)w, EV_SIGNAL);
433	}	457	}
434	}	458	}
435		459
436	static void	460	static void
437	siginit (void)	461	siginit (EV_P)
438	{	462	{
		463	#ifndef WIN32
439	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	464	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);
440	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);	465	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
441		466
442	/* rather than sort out wether we really need nb, set it */	467	/* rather than sort out wether we really need nb, set it */
443	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	468	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
444	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	469	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
		470	#endif
445		471
446	ev_io_set (&sigev, sigpipe [0], EV_READ);	472	ev_io_set (&sigev, sigpipe [0], EV_READ);
447	ev_io_start (&sigev);	473	ev_io_start (EV_A_ &sigev);
		474	ev_unref (EV_A); /* child watcher should not keep loop alive */
448	}	475	}
449		476
450	/*****************************************************************************/	477	/*****************************************************************************/
451		478
452	static struct ev_idle **idles;	479	#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
463	static struct ev_child *childs [PID_HASHSIZE];
464	static struct ev_signal childev;
465		480
466	#ifndef WCONTINUED	481	#ifndef WCONTINUED
467	# define WCONTINUED 0	482	# define WCONTINUED 0
468	#endif	483	#endif
469		484
470	static void	485	static void
471	childcb (struct ev_signal *sw, int revents)	486	child_reap (EV_P_ struct ev_signal *sw, int chain, int pid, int status)
472	{	487	{
473	struct ev_child *w;	488	struct ev_child *w;
		489
		490	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
		491	if (w->pid == pid || !w->pid)
		492	{
		493	w->priority = sw->priority; /* need to do it *now* */
		494	w->rpid = pid;
		495	w->rstatus = status;
		496	event (EV_A_ (W)w, EV_CHILD);
		497	}
		498	}
		499
		500	static void
		501	childcb (EV_P_ struct ev_signal *sw, int revents)
		502	{
474	int pid, status;	503	int pid, status;
475		504
476	while ((pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)) != -1)	505	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
477	for (w = childs [pid & (PID_HASHSIZE - 1)]; w; w = w->next)	506	{
478	if (w->pid == pid || !w->pid)	507	/* make sure we are called again until all childs have been reaped */
479	{	508	event (EV_A_ (W)sw, EV_SIGNAL);
480	w->status = status;	509
481	event ((W)w, EV_CHILD);	510	child_reap (EV_A_ sw, pid, pid, status);
482	}	511	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
		512	}
483	}	513	}
		514
		515	#endif
484		516
485	/*****************************************************************************/	517	/*****************************************************************************/
486		518
		519	#if EV_USE_KQUEUE
		520	# include "ev_kqueue.c"
		521	#endif
487	#if EV_USE_EPOLL	522	#if EV_USE_EPOLL
488	# include "ev_epoll.c"	523	# include "ev_epoll.c"
489	#endif	524	#endif
490	#if EV_USE_POLL	525	#if EV_USEV_POLL
491	# include "ev_poll.c"	526	# include "ev_poll.c"
492	#endif	527	#endif
493	#if EV_USE_SELECT	528	#if EV_USE_SELECT
494	# include "ev_select.c"	529	# include "ev_select.c"
495	#endif	530	#endif
…		…
504	ev_version_minor (void)	539	ev_version_minor (void)
505	{	540	{
506	return EV_VERSION_MINOR;	541	return EV_VERSION_MINOR;
507	}	542	}
508		543
509	/* return true if we are running with elevated privileges and ignore env variables */	544	/* return true if we are running with elevated privileges and should ignore env variables */
510	static int	545	static int
511	enable_secure ()	546	enable_secure (void)
512	{	547	{
		548	#ifdef WIN32
		549	return 0;
		550	#else
513	return getuid () != geteuid ()	551	return getuid () != geteuid ()
514	|| getgid () != getegid ();	552	|| getgid () != getegid ();
		553	#endif
515	}	554	}
516		555
517	int ev_init (int methods)	556	int
		557	ev_method (EV_P)
518	{	558	{
		559	return method;
		560	}
		561
		562	static void
		563	loop_init (EV_P_ int methods)
		564	{
519	if (!ev_method)	565	if (!method)
520	{	566	{
521	#if EV_USE_MONOTONIC	567	#if EV_USE_MONOTONIC
522	{	568	{
523	struct timespec ts;	569	struct timespec ts;
524	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	570	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
525	have_monotonic = 1;	571	have_monotonic = 1;
526	}	572	}
527	#endif	573	#endif
528		574
529	ev_now = ev_time ();	575	rt_now = ev_time ();
530	now = get_clock ();	576	mn_now = get_clock ();
531	now_floor = now;	577	now_floor = mn_now;
532	diff = ev_now - now;	578	rtmn_diff = rt_now - mn_now;
533
534	if (pipe (sigpipe))
535	return 0;
536		579
537	if (methods == EVMETHOD_AUTO)	580	if (methods == EVMETHOD_AUTO)
538	if (!enable_secure () && getenv ("LIBEV_METHODS"))	581	if (!enable_secure () && getenv ("LIBEV_METHODS"))
539	methods = atoi (getenv ("LIBEV_METHODS"));	582	methods = atoi (getenv ("LIBEV_METHODS"));
540	else	583	else
541	methods = EVMETHOD_ANY;	584	methods = EVMETHOD_ANY;
542		585
543	ev_method = 0;	586	method = 0;
		587	#if EV_USE_KQUEUE
		588	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
		589	#endif
544	#if EV_USE_EPOLL	590	#if EV_USE_EPOLL
545	if (!ev_method && (methods & EVMETHOD_EPOLL )) epoll_init (methods);	591	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
546	#endif	592	#endif
547	#if EV_USE_POLL	593	#if EV_USEV_POLL
548	if (!ev_method && (methods & EVMETHOD_POLL )) poll_init (methods);	594	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
549	#endif	595	#endif
550	#if EV_USE_SELECT	596	#if EV_USE_SELECT
551	if (!ev_method && (methods & EVMETHOD_SELECT)) select_init (methods);	597	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
552	#endif	598	#endif
		599	}
		600	}
553		601
		602	void
		603	loop_destroy (EV_P)
		604	{
		605	#if EV_USE_KQUEUE
		606	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		607	#endif
		608	#if EV_USE_EPOLL
		609	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		610	#endif
		611	#if EV_USEV_POLL
		612	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		613	#endif
		614	#if EV_USE_SELECT
		615	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		616	#endif
		617
		618	method = 0;
		619	/*TODO*/
		620	}
		621
		622	void
		623	loop_fork (EV_P)
		624	{
		625	/*TODO*/
		626	#if EV_USE_EPOLL
		627	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		628	#endif
		629	#if EV_USE_KQUEUE
		630	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		631	#endif
		632	}
		633
		634	#if EV_MULTIPLICITY
		635	struct ev_loop *
		636	ev_loop_new (int methods)
		637	{
		638	struct ev_loop *loop = (struct ev_loop *)calloc (1, sizeof (struct ev_loop));
		639
		640	loop_init (EV_A_ methods);
		641
		642	if (ev_methods (EV_A))
		643	return loop;
		644
		645	return 0;
		646	}
		647
		648	void
		649	ev_loop_destroy (EV_P)
		650	{
		651	loop_destroy (EV_A);
		652	free (loop);
		653	}
		654
		655	void
		656	ev_loop_fork (EV_P)
		657	{
		658	loop_fork (EV_A);
		659	}
		660
		661	#endif
		662
		663	#if EV_MULTIPLICITY
		664	struct ev_loop default_loop_struct;
		665	static struct ev_loop *default_loop;
		666
		667	struct ev_loop *
		668	#else
		669	static int default_loop;
		670
		671	int
		672	#endif
		673	ev_default_loop (int methods)
		674	{
		675	if (sigpipe [0] == sigpipe [1])
		676	if (pipe (sigpipe))
		677	return 0;
		678
		679	if (!default_loop)
		680	{
		681	#if EV_MULTIPLICITY
		682	struct ev_loop *loop = default_loop = &default_loop_struct;
		683	#else
		684	default_loop = 1;
		685	#endif
		686
		687	loop_init (EV_A_ methods);
		688
554	if (ev_method)	689	if (ev_method (EV_A))
555	{	690	{
556	ev_watcher_init (&sigev, sigcb);	691	ev_watcher_init (&sigev, sigcb);
		692	ev_set_priority (&sigev, EV_MAXPRI);
557	siginit ();	693	siginit (EV_A);
558		694
		695	#ifndef WIN32
559	ev_signal_init (&childev, childcb, SIGCHLD);	696	ev_signal_init (&childev, childcb, SIGCHLD);
		697	ev_set_priority (&childev, EV_MAXPRI);
560	ev_signal_start (&childev);	698	ev_signal_start (EV_A_ &childev);
		699	ev_unref (EV_A); /* child watcher should not keep loop alive */
		700	#endif
561	}	701	}
		702	else
		703	default_loop = 0;
562	}	704	}
563		705
564	return ev_method;	706	return default_loop;
565	}	707	}
566		708
567	/*****************************************************************************/
568
569	void	709	void
570	ev_fork_prepare (void)	710	ev_default_destroy (void)
571	{	711	{
572	/* nop */	712	#if EV_MULTIPLICITY
573	}	713	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	714	#endif
588		715
		716	ev_ref (EV_A); /* child watcher */
		717	ev_signal_stop (EV_A_ &childev);
		718
		719	ev_ref (EV_A); /* signal watcher */
589	ev_io_stop (&sigev);	720	ev_io_stop (EV_A_ &sigev);
		721
		722	close (sigpipe [0]); sigpipe [0] = 0;
		723	close (sigpipe [1]); sigpipe [1] = 0;
		724
		725	loop_destroy (EV_A);
		726	}
		727
		728	void
		729	ev_default_fork (EV_P)
		730	{
		731	loop_fork (EV_A);
		732
		733	ev_io_stop (EV_A_ &sigev);
590	close (sigpipe [0]);	734	close (sigpipe [0]);
591	close (sigpipe [1]);	735	close (sigpipe [1]);
592	pipe (sigpipe);	736	pipe (sigpipe);
		737
		738	ev_ref (EV_A); /* signal watcher */
593	siginit ();	739	siginit (EV_A);
594	}	740	}
595		741
596	/*****************************************************************************/	742	/*****************************************************************************/
597		743
598	static void	744	static void
599	call_pending (void)	745	call_pending (EV_P)
600	{	746	{
601	int pri;	747	int pri;
602		748
603	for (pri = NUMPRI; pri--; )	749	for (pri = NUMPRI; pri--; )
604	while (pendingcnt [pri])	750	while (pendingcnt [pri])
…		…
606	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	752	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
607		753
608	if (p->w)	754	if (p->w)
609	{	755	{
610	p->w->pending = 0;	756	p->w->pending = 0;
611	p->w->cb (p->w, p->events);	757	p->w->cb (EV_A_ p->w, p->events);
612	}	758	}
613	}	759	}
614	}	760	}
615		761
616	static void	762	static void
617	timers_reify (void)	763	timers_reify (EV_P)
618	{	764	{
619	while (timercnt && timers [0]->at <= now)	765	while (timercnt && timers [0]->at <= mn_now)
620	{	766	{
621	struct ev_timer *w = timers [0];	767	struct ev_timer *w = timers [0];
622		768
623	/* first reschedule or stop timer */	769	/* first reschedule or stop timer */
624	if (w->repeat)	770	if (w->repeat)
625	{	771	{
626	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	772	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
627	w->at = now + w->repeat;	773	w->at = mn_now + w->repeat;
628	downheap ((WT *)timers, timercnt, 0);	774	downheap ((WT *)timers, timercnt, 0);
629	}	775	}
630	else	776	else
631	ev_timer_stop (w); /* nonrepeating: stop timer */	777	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
632		778
633	event ((W)w, EV_TIMEOUT);	779	event (EV_A_ (W)w, EV_TIMEOUT);
634	}	780	}
635	}	781	}
636		782
637	static void	783	static void
638	periodics_reify (void)	784	periodics_reify (EV_P)
639	{	785	{
640	while (periodiccnt && periodics [0]->at <= ev_now)	786	while (periodiccnt && periodics [0]->at <= rt_now)
641	{	787	{
642	struct ev_periodic *w = periodics [0];	788	struct ev_periodic *w = periodics [0];
643		789
644	/* first reschedule or stop timer */	790	/* first reschedule or stop timer */
645	if (w->interval)	791	if (w->interval)
646	{	792	{
647	w->at += floor ((ev_now - w->at) / w->interval + 1.) * w->interval;	793	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));	794	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));
649	downheap ((WT *)periodics, periodiccnt, 0);	795	downheap ((WT *)periodics, periodiccnt, 0);
650	}	796	}
651	else	797	else
652	ev_periodic_stop (w); /* nonrepeating: stop timer */	798	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
653		799
654	event ((W)w, EV_PERIODIC);	800	event (EV_A_ (W)w, EV_PERIODIC);
655	}	801	}
656	}	802	}
657		803
658	static void	804	static void
659	periodics_reschedule (ev_tstamp diff)	805	periodics_reschedule (EV_P)
660	{	806	{
661	int i;	807	int i;
662		808
663	/* adjust periodics after time jump */	809	/* adjust periodics after time jump */
664	for (i = 0; i < periodiccnt; ++i)	810	for (i = 0; i < periodiccnt; ++i)
665	{	811	{
666	struct ev_periodic *w = periodics [i];	812	struct ev_periodic *w = periodics [i];
667		813
668	if (w->interval)	814	if (w->interval)
669	{	815	{
670	ev_tstamp diff = ceil ((ev_now - w->at) / w->interval) * w->interval;	816	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;
671		817
672	if (fabs (diff) >= 1e-4)	818	if (fabs (diff) >= 1e-4)
673	{	819	{
674	ev_periodic_stop (w);	820	ev_periodic_stop (EV_A_ w);
675	ev_periodic_start (w);	821	ev_periodic_start (EV_A_ w);
676		822
677	i = 0; /* restart loop, inefficient, but time jumps should be rare */	823	i = 0; /* restart loop, inefficient, but time jumps should be rare */
678	}	824	}
679	}	825	}
680	}	826	}
681	}	827	}
682		828
683	static int	829	inline int
684	time_update_monotonic (void)	830	time_update_monotonic (EV_P)
685	{	831	{
686	now = get_clock ();	832	mn_now = get_clock ();
687		833
688	if (expect_true (now - now_floor < MIN_TIMEJUMP * .5))	834	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
689	{	835	{
690	ev_now = now + diff;	836	rt_now = rtmn_diff + mn_now;
691	return 0;	837	return 0;
692	}	838	}
693	else	839	else
694	{	840	{
695	now_floor = now;	841	now_floor = mn_now;
696	ev_now = ev_time ();	842	rt_now = ev_time ();
697	return 1;	843	return 1;
698	}	844	}
699	}	845	}
700		846
701	static void	847	static void
702	time_update (void)	848	time_update (EV_P)
703	{	849	{
704	int i;	850	int i;
705		851
706	#if EV_USE_MONOTONIC	852	#if EV_USE_MONOTONIC
707	if (expect_true (have_monotonic))	853	if (expect_true (have_monotonic))
708	{	854	{
709	if (time_update_monotonic ())	855	if (time_update_monotonic (EV_A))
710	{	856	{
711	ev_tstamp odiff = diff;	857	ev_tstamp odiff = rtmn_diff;
712		858
713	for (i = 4; --i; ) /* loop a few times, before making important decisions */	859	for (i = 4; --i; ) /* loop a few times, before making important decisions */
714	{	860	{
715	diff = ev_now - now;	861	rtmn_diff = rt_now - mn_now;
716		862
717	if (fabs (odiff - diff) < MIN_TIMEJUMP)	863	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
718	return; /* all is well */	864	return; /* all is well */
719		865
720	ev_now = ev_time ();	866	rt_now = ev_time ();
721	now = get_clock ();	867	mn_now = get_clock ();
722	now_floor = now;	868	now_floor = mn_now;
723	}	869	}
724		870
725	periodics_reschedule (diff - odiff);	871	periodics_reschedule (EV_A);
726	/* no timer adjustment, as the monotonic clock doesn't jump */	872	/* no timer adjustment, as the monotonic clock doesn't jump */
		873	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
727	}	874	}
728	}	875	}
729	else	876	else
730	#endif	877	#endif
731	{	878	{
732	ev_now = ev_time ();	879	rt_now = ev_time ();
733		880
734	if (expect_false (now > ev_now || now < ev_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	881	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
735	{	882	{
736	periodics_reschedule (ev_now - now);	883	periodics_reschedule (EV_A);
737		884
738	/* adjust timers. this is easy, as the offset is the same for all */	885	/* adjust timers. this is easy, as the offset is the same for all */
739	for (i = 0; i < timercnt; ++i)	886	for (i = 0; i < timercnt; ++i)
740	timers [i]->at += diff;	887	timers [i]->at += rt_now - mn_now;
741	}	888	}
742		889
743	now = ev_now;	890	mn_now = rt_now;
744	}	891	}
745	}	892	}
746		893
747	int ev_loop_done;	894	void
		895	ev_ref (EV_P)
		896	{
		897	++activecnt;
		898	}
748		899
		900	void
		901	ev_unref (EV_P)
		902	{
		903	--activecnt;
		904	}
		905
		906	static int loop_done;
		907
		908	void
749	void ev_loop (int flags)	909	ev_loop (EV_P_ int flags)
750	{	910	{
751	double block;	911	double block;
752	ev_loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;	912	loop_done = flags & (EVLOOP_ONESHOT | EVLOOP_NONBLOCK) ? 1 : 0;
753		913
754	do	914	do
755	{	915	{
756	/* queue check watchers (and execute them) */	916	/* queue check watchers (and execute them) */
757	if (expect_false (preparecnt))	917	if (expect_false (preparecnt))
758	{	918	{
759	queue_events ((W *)prepares, preparecnt, EV_PREPARE);	919	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
760	call_pending ();	920	call_pending (EV_A);
761	}	921	}
762		922
763	/* update fd-related kernel structures */	923	/* update fd-related kernel structures */
764	fd_reify ();	924	fd_reify (EV_A);
765		925
766	/* calculate blocking time */	926	/* calculate blocking time */
767		927
768	/* we only need this for !monotonic clockor timers, but as we basically	928	/* we only need this for !monotonic clockor timers, but as we basically
769	always have timers, we just calculate it always */	929	always have timers, we just calculate it always */
770	#if EV_USE_MONOTONIC	930	#if EV_USE_MONOTONIC
771	if (expect_true (have_monotonic))	931	if (expect_true (have_monotonic))
772	time_update_monotonic ();	932	time_update_monotonic (EV_A);
773	else	933	else
774	#endif	934	#endif
775	{	935	{
776	ev_now = ev_time ();	936	rt_now = ev_time ();
777	now = ev_now;	937	mn_now = rt_now;
778	}	938	}
779		939
780	if (flags & EVLOOP_NONBLOCK || idlecnt)	940	if (flags & EVLOOP_NONBLOCK || idlecnt)
781	block = 0.;	941	block = 0.;
782	else	942	else
783	{	943	{
784	block = MAX_BLOCKTIME;	944	block = MAX_BLOCKTIME;
785		945
786	if (timercnt)	946	if (timercnt)
787	{	947	{
788	ev_tstamp to = timers [0]->at - now + method_fudge;	948	ev_tstamp to = timers [0]->at - mn_now + method_fudge;
789	if (block > to) block = to;	949	if (block > to) block = to;
790	}	950	}
791		951
792	if (periodiccnt)	952	if (periodiccnt)
793	{	953	{
794	ev_tstamp to = periodics [0]->at - ev_now + method_fudge;	954	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;
795	if (block > to) block = to;	955	if (block > to) block = to;
796	}	956	}
797		957
798	if (block < 0.) block = 0.;	958	if (block < 0.) block = 0.;
799	}	959	}
800		960
801	method_poll (block);	961	method_poll (EV_A_ block);
802		962
803	/* update ev_now, do magic */	963	/* update rt_now, do magic */
804	time_update ();	964	time_update (EV_A);
805		965
806	/* queue pending timers and reschedule them */	966	/* queue pending timers and reschedule them */
807	timers_reify (); /* relative timers called last */	967	timers_reify (EV_A); /* relative timers called last */
808	periodics_reify (); /* absolute timers called first */	968	periodics_reify (EV_A); /* absolute timers called first */
809		969
810	/* queue idle watchers unless io or timers are pending */	970	/* queue idle watchers unless io or timers are pending */
811	if (!pendingcnt)	971	if (!pendingcnt)
812	queue_events ((W *)idles, idlecnt, EV_IDLE);	972	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
813		973
814	/* queue check watchers, to be executed first */	974	/* queue check watchers, to be executed first */
815	if (checkcnt)	975	if (checkcnt)
816	queue_events ((W *)checks, checkcnt, EV_CHECK);	976	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
817		977
818	call_pending ();	978	call_pending (EV_A);
819	}	979	}
820	while (!ev_loop_done);	980	while (activecnt && !loop_done);
821		981
822	if (ev_loop_done != 2)	982	if (loop_done != 2)
823	ev_loop_done = 0;	983	loop_done = 0;
		984	}
		985
		986	void
		987	ev_unloop (EV_P_ int how)
		988	{
		989	loop_done = how;
824	}	990	}
825		991
826	/*****************************************************************************/	992	/*****************************************************************************/
827		993
828	static void	994	inline void
829	wlist_add (WL *head, WL elem)	995	wlist_add (WL *head, WL elem)
830	{	996	{
831	elem->next = *head;	997	elem->next = *head;
832	*head = elem;	998	*head = elem;
833	}	999	}
834		1000
835	static void	1001	inline void
836	wlist_del (WL *head, WL elem)	1002	wlist_del (WL *head, WL elem)
837	{	1003	{
838	while (*head)	1004	while (*head)
839	{	1005	{
840	if (*head == elem)	1006	if (*head == elem)
…		…
845		1011
846	head = &(*head)->next;	1012	head = &(*head)->next;
847	}	1013	}
848	}	1014	}
849		1015
850	static void	1016	inline void
851	ev_clear_pending (W w)	1017	ev_clear_pending (EV_P_ W w)
852	{	1018	{
853	if (w->pending)	1019	if (w->pending)
854	{	1020	{
855	pendings [ABSPRI (w)][w->pending - 1].w = 0;	1021	pendings [ABSPRI (w)][w->pending - 1].w = 0;
856	w->pending = 0;	1022	w->pending = 0;
857	}	1023	}
858	}	1024	}
859		1025
860	static void	1026	inline void
861	ev_start (W w, int active)	1027	ev_start (EV_P_ W w, int active)
862	{	1028	{
863	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;	1029	if (w->priority < EV_MINPRI) w->priority = EV_MINPRI;
864	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;	1030	if (w->priority > EV_MAXPRI) w->priority = EV_MAXPRI;
865		1031
866	w->active = active;	1032	w->active = active;
		1033	ev_ref (EV_A);
867	}	1034	}
868		1035
869	static void	1036	inline void
870	ev_stop (W w)	1037	ev_stop (EV_P_ W w)
871	{	1038	{
		1039	ev_unref (EV_A);
872	w->active = 0;	1040	w->active = 0;
873	}	1041	}
874		1042
875	/*****************************************************************************/	1043	/*****************************************************************************/
876		1044
877	void	1045	void
878	ev_io_start (struct ev_io *w)	1046	ev_io_start (EV_P_ struct ev_io *w)
879	{	1047	{
880	int fd = w->fd;	1048	int fd = w->fd;
881		1049
882	if (ev_is_active (w))	1050	if (ev_is_active (w))
883	return;	1051	return;
884		1052
885	assert (("ev_io_start called with negative fd", fd >= 0));	1053	assert (("ev_io_start called with negative fd", fd >= 0));
886		1054
887	ev_start ((W)w, 1);	1055	ev_start (EV_A_ (W)w, 1);
888	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1056	array_needsize (anfds, anfdmax, fd + 1, anfds_init);
889	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1057	wlist_add ((WL *)&anfds[fd].head, (WL)w);
890		1058
891	fd_change (fd);	1059	fd_change (EV_A_ fd);
892	}	1060	}
893		1061
894	void	1062	void
895	ev_io_stop (struct ev_io *w)	1063	ev_io_stop (EV_P_ struct ev_io *w)
896	{	1064	{
897	ev_clear_pending ((W)w);	1065	ev_clear_pending (EV_A_ (W)w);
898	if (!ev_is_active (w))	1066	if (!ev_is_active (w))
899	return;	1067	return;
900		1068
901	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1069	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
902	ev_stop ((W)w);	1070	ev_stop (EV_A_ (W)w);
903		1071
904	fd_change (w->fd);	1072	fd_change (EV_A_ w->fd);
905	}	1073	}
906		1074
907	void	1075	void
908	ev_timer_start (struct ev_timer *w)	1076	ev_timer_start (EV_P_ struct ev_timer *w)
909	{	1077	{
910	if (ev_is_active (w))	1078	if (ev_is_active (w))
911	return;	1079	return;
912		1080
913	w->at += now;	1081	w->at += mn_now;
914		1082
915	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1083	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
916		1084
917	ev_start ((W)w, ++timercnt);	1085	ev_start (EV_A_ (W)w, ++timercnt);
918	array_needsize (timers, timermax, timercnt, );	1086	array_needsize (timers, timermax, timercnt, );
919	timers [timercnt - 1] = w;	1087	timers [timercnt - 1] = w;
920	upheap ((WT *)timers, timercnt - 1);	1088	upheap ((WT *)timers, timercnt - 1);
921	}	1089	}
922		1090
923	void	1091	void
924	ev_timer_stop (struct ev_timer *w)	1092	ev_timer_stop (EV_P_ struct ev_timer *w)
925	{	1093	{
926	ev_clear_pending ((W)w);	1094	ev_clear_pending (EV_A_ (W)w);
927	if (!ev_is_active (w))	1095	if (!ev_is_active (w))
928	return;	1096	return;
929		1097
930	if (w->active < timercnt--)	1098	if (w->active < timercnt--)
931	{	1099	{
…		…
933	downheap ((WT *)timers, timercnt, w->active - 1);	1101	downheap ((WT *)timers, timercnt, w->active - 1);
934	}	1102	}
935		1103
936	w->at = w->repeat;	1104	w->at = w->repeat;
937		1105
938	ev_stop ((W)w);	1106	ev_stop (EV_A_ (W)w);
939	}	1107	}
940		1108
941	void	1109	void
942	ev_timer_again (struct ev_timer *w)	1110	ev_timer_again (EV_P_ struct ev_timer *w)
943	{	1111	{
944	if (ev_is_active (w))	1112	if (ev_is_active (w))
945	{	1113	{
946	if (w->repeat)	1114	if (w->repeat)
947	{	1115	{
948	w->at = now + w->repeat;	1116	w->at = mn_now + w->repeat;
949	downheap ((WT *)timers, timercnt, w->active - 1);	1117	downheap ((WT *)timers, timercnt, w->active - 1);
950	}	1118	}
951	else	1119	else
952	ev_timer_stop (w);	1120	ev_timer_stop (EV_A_ w);
953	}	1121	}
954	else if (w->repeat)	1122	else if (w->repeat)
955	ev_timer_start (w);	1123	ev_timer_start (EV_A_ w);
956	}	1124	}
957		1125
958	void	1126	void
959	ev_periodic_start (struct ev_periodic *w)	1127	ev_periodic_start (EV_P_ struct ev_periodic *w)
960	{	1128	{
961	if (ev_is_active (w))	1129	if (ev_is_active (w))
962	return;	1130	return;
963		1131
964	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1132	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
965		1133
966	/* this formula differs from the one in periodic_reify because we do not always round up */	1134	/* this formula differs from the one in periodic_reify because we do not always round up */
967	if (w->interval)	1135	if (w->interval)
968	w->at += ceil ((ev_now - w->at) / w->interval) * w->interval;	1136	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;
969		1137
970	ev_start ((W)w, ++periodiccnt);	1138	ev_start (EV_A_ (W)w, ++periodiccnt);
971	array_needsize (periodics, periodicmax, periodiccnt, );	1139	array_needsize (periodics, periodicmax, periodiccnt, );
972	periodics [periodiccnt - 1] = w;	1140	periodics [periodiccnt - 1] = w;
973	upheap ((WT *)periodics, periodiccnt - 1);	1141	upheap ((WT *)periodics, periodiccnt - 1);
974	}	1142	}
975		1143
976	void	1144	void
977	ev_periodic_stop (struct ev_periodic *w)	1145	ev_periodic_stop (EV_P_ struct ev_periodic *w)
978	{	1146	{
979	ev_clear_pending ((W)w);	1147	ev_clear_pending (EV_A_ (W)w);
980	if (!ev_is_active (w))	1148	if (!ev_is_active (w))
981	return;	1149	return;
982		1150
983	if (w->active < periodiccnt--)	1151	if (w->active < periodiccnt--)
984	{	1152	{
985	periodics [w->active - 1] = periodics [periodiccnt];	1153	periodics [w->active - 1] = periodics [periodiccnt];
986	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1154	downheap ((WT *)periodics, periodiccnt, w->active - 1);
987	}	1155	}
988		1156
989	ev_stop ((W)w);	1157	ev_stop (EV_A_ (W)w);
990	}	1158	}
991		1159
992	void	1160	void
993	ev_signal_start (struct ev_signal *w)	1161	ev_idle_start (EV_P_ struct ev_idle *w)
994	{	1162	{
995	if (ev_is_active (w))	1163	if (ev_is_active (w))
996	return;	1164	return;
997		1165
		1166	ev_start (EV_A_ (W)w, ++idlecnt);
		1167	array_needsize (idles, idlemax, idlecnt, );
		1168	idles [idlecnt - 1] = w;
		1169	}
		1170
		1171	void
		1172	ev_idle_stop (EV_P_ struct ev_idle *w)
		1173	{
		1174	ev_clear_pending (EV_A_ (W)w);
		1175	if (ev_is_active (w))
		1176	return;
		1177
		1178	idles [w->active - 1] = idles [--idlecnt];
		1179	ev_stop (EV_A_ (W)w);
		1180	}
		1181
		1182	void
		1183	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1184	{
		1185	if (ev_is_active (w))
		1186	return;
		1187
		1188	ev_start (EV_A_ (W)w, ++preparecnt);
		1189	array_needsize (prepares, preparemax, preparecnt, );
		1190	prepares [preparecnt - 1] = w;
		1191	}
		1192
		1193	void
		1194	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1195	{
		1196	ev_clear_pending (EV_A_ (W)w);
		1197	if (ev_is_active (w))
		1198	return;
		1199
		1200	prepares [w->active - 1] = prepares [--preparecnt];
		1201	ev_stop (EV_A_ (W)w);
		1202	}
		1203
		1204	void
		1205	ev_check_start (EV_P_ struct ev_check *w)
		1206	{
		1207	if (ev_is_active (w))
		1208	return;
		1209
		1210	ev_start (EV_A_ (W)w, ++checkcnt);
		1211	array_needsize (checks, checkmax, checkcnt, );
		1212	checks [checkcnt - 1] = w;
		1213	}
		1214
		1215	void
		1216	ev_check_stop (EV_P_ struct ev_check *w)
		1217	{
		1218	ev_clear_pending (EV_A_ (W)w);
		1219	if (ev_is_active (w))
		1220	return;
		1221
		1222	checks [w->active - 1] = checks [--checkcnt];
		1223	ev_stop (EV_A_ (W)w);
		1224	}
		1225
		1226	#ifndef SA_RESTART
		1227	# define SA_RESTART 0
		1228	#endif
		1229
		1230	void
		1231	ev_signal_start (EV_P_ struct ev_signal *w)
		1232	{
		1233	#if EV_MULTIPLICITY
		1234	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1235	#endif
		1236	if (ev_is_active (w))
		1237	return;
		1238
998	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1239	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
999		1240
1000	ev_start ((W)w, 1);	1241	ev_start (EV_A_ (W)w, 1);
1001	array_needsize (signals, signalmax, w->signum, signals_init);	1242	array_needsize (signals, signalmax, w->signum, signals_init);
1002	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1243	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1003		1244
1004	if (!w->next)	1245	if (!w->next)
1005	{	1246	{
1006	struct sigaction sa;	1247	struct sigaction sa;
1007	sa.sa_handler = sighandler;	1248	sa.sa_handler = sighandler;
1008	sigfillset (&sa.sa_mask);	1249	sigfillset (&sa.sa_mask);
1009	sa.sa_flags = 0;	1250	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1010	sigaction (w->signum, &sa, 0);	1251	sigaction (w->signum, &sa, 0);
1011	}	1252	}
1012	}	1253	}
1013		1254
1014	void	1255	void
1015	ev_signal_stop (struct ev_signal *w)	1256	ev_signal_stop (EV_P_ struct ev_signal *w)
1016	{	1257	{
1017	ev_clear_pending ((W)w);	1258	ev_clear_pending (EV_A_ (W)w);
1018	if (!ev_is_active (w))	1259	if (!ev_is_active (w))
1019	return;	1260	return;
1020		1261
1021	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1262	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1022	ev_stop ((W)w);	1263	ev_stop (EV_A_ (W)w);
1023		1264
1024	if (!signals [w->signum - 1].head)	1265	if (!signals [w->signum - 1].head)
1025	signal (w->signum, SIG_DFL);	1266	signal (w->signum, SIG_DFL);
1026	}	1267	}
1027		1268
1028	void	1269	void
1029	ev_idle_start (struct ev_idle *w)	1270	ev_child_start (EV_P_ struct ev_child *w)
1030	{	1271	{
		1272	#if EV_MULTIPLICITY
		1273	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1274	#endif
1031	if (ev_is_active (w))	1275	if (ev_is_active (w))
1032	return;	1276	return;
1033		1277
1034	ev_start ((W)w, ++idlecnt);	1278	ev_start (EV_A_ (W)w, 1);
1035	array_needsize (idles, idlemax, idlecnt, );	1279	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1036	idles [idlecnt - 1] = w;
1037	}	1280	}
1038		1281
1039	void	1282	void
1040	ev_idle_stop (struct ev_idle *w)	1283	ev_child_stop (EV_P_ struct ev_child *w)
1041	{	1284	{
1042	ev_clear_pending ((W)w);	1285	ev_clear_pending (EV_A_ (W)w);
1043	if (ev_is_active (w))	1286	if (ev_is_active (w))
1044	return;	1287	return;
1045		1288
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);	1289	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1112	ev_stop ((W)w);	1290	ev_stop (EV_A_ (W)w);
1113	}	1291	}
1114		1292
1115	/*****************************************************************************/	1293	/*****************************************************************************/
1116		1294
1117	struct ev_once	1295	struct ev_once
…		…
1121	void (*cb)(int revents, void *arg);	1299	void (*cb)(int revents, void *arg);
1122	void *arg;	1300	void *arg;
1123	};	1301	};
1124		1302
1125	static void	1303	static void
1126	once_cb (struct ev_once *once, int revents)	1304	once_cb (EV_P_ struct ev_once *once, int revents)
1127	{	1305	{
1128	void (*cb)(int revents, void *arg) = once->cb;	1306	void (*cb)(int revents, void *arg) = once->cb;
1129	void *arg = once->arg;	1307	void *arg = once->arg;
1130		1308
1131	ev_io_stop (&once->io);	1309	ev_io_stop (EV_A_ &once->io);
1132	ev_timer_stop (&once->to);	1310	ev_timer_stop (EV_A_ &once->to);
1133	free (once);	1311	free (once);
1134		1312
1135	cb (revents, arg);	1313	cb (revents, arg);
1136	}	1314	}
1137		1315
1138	static void	1316	static void
1139	once_cb_io (struct ev_io *w, int revents)	1317	once_cb_io (EV_P_ struct ev_io *w, int revents)
1140	{	1318	{
1141	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);	1319	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, io)), revents);
1142	}	1320	}
1143		1321
1144	static void	1322	static void
1145	once_cb_to (struct ev_timer *w, int revents)	1323	once_cb_to (EV_P_ struct ev_timer *w, int revents)
1146	{	1324	{
1147	once_cb ((struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);	1325	once_cb (EV_A_ (struct ev_once *)(((char *)w) - offsetof (struct ev_once, to)), revents);
1148	}	1326	}
1149		1327
1150	void	1328	void
1151	ev_once (int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1329	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1152	{	1330	{
1153	struct ev_once *once = malloc (sizeof (struct ev_once));	1331	struct ev_once *once = malloc (sizeof (struct ev_once));
1154		1332
1155	if (!once)	1333	if (!once)
1156	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1334	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
…		…
1161		1339
1162	ev_watcher_init (&once->io, once_cb_io);	1340	ev_watcher_init (&once->io, once_cb_io);
1163	if (fd >= 0)	1341	if (fd >= 0)
1164	{	1342	{
1165	ev_io_set (&once->io, fd, events);	1343	ev_io_set (&once->io, fd, events);
1166	ev_io_start (&once->io);	1344	ev_io_start (EV_A_ &once->io);
1167	}	1345	}
1168		1346
1169	ev_watcher_init (&once->to, once_cb_to);	1347	ev_watcher_init (&once->to, once_cb_to);
1170	if (timeout >= 0.)	1348	if (timeout >= 0.)
1171	{	1349	{
1172	ev_timer_set (&once->to, timeout, 0.);	1350	ev_timer_set (&once->to, timeout, 0.);
1173	ev_timer_start (&once->to);	1351	ev_timer_start (EV_A_ &once->to);
1174	}	1352	}
1175	}	1353	}
1176	}	1354	}
1177		1355
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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