[ViewVC] Diff of: cvs/libev/ev.c

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.80 by root, Fri Nov 9 15:30:59 2007 UTC

…		…
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	#ifndef EV_STANDALONE	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>
38	#include <fcntl.h>	59	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	60	#include <stddef.h>
41		61
42	#include <stdio.h>	62	#include <stdio.h>
43		63
44	#include <assert.h>	64	#include <assert.h>
45	#include <errno.h>	65	#include <errno.h>
46	#include <sys/types.h>	66	#include <sys/types.h>
		67	#include <time.h>
		68
		69	#include <signal.h>
		70
47	#ifndef WIN32	71	#ifndef WIN32
		72	# include <unistd.h>
		73	# include <sys/time.h>
48	# include <sys/wait.h>	74	# include <sys/wait.h>
49	#endif	75	#endif
50	#include <sys/time.h>
51	#include <time.h>
52
53	/**/	76	/**/
54		77
55	#ifndef EV_USE_MONOTONIC	78	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	79	# define EV_USE_MONOTONIC 1
57	#endif	80	#endif
58		81
59	#ifndef EV_USE_SELECT	82	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	83	# define EV_USE_SELECT 1
61	#endif	84	#endif
62		85
63	#ifndef EV_USEV_POLL	86	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	87	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65	#endif	88	#endif
66		89
67	#ifndef EV_USE_EPOLL	90	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	91	# define EV_USE_EPOLL 0
69	#endif	92	#endif
70		93
71	#ifndef EV_USE_KQUEUE	94	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	95	# define EV_USE_KQUEUE 0
		96	#endif
		97
		98	#ifndef EV_USE_WIN32
		99	# ifdef WIN32
		100	# define EV_USE_WIN32 0 /* it does not exist, use select */
		101	# undef EV_USE_SELECT
		102	# define EV_USE_SELECT 1
		103	# else
		104	# define EV_USE_WIN32 0
		105	# endif
73	#endif	106	#endif
74		107
75	#ifndef EV_USE_REALTIME	108	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	109	# define EV_USE_REALTIME 1
77	#endif	110	#endif
…		…
115	typedef struct ev_watcher_list *WL;	148	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	149	typedef struct ev_watcher_time *WT;
117		150
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		152
		153	#include "ev_win32.c"
		154
120	/*****************************************************************************/	155	/*****************************************************************************/
121		156
		157	static void (syserr_cb)(const char msg);
		158
		159	void ev_set_syserr_cb (void (cb)(const char msg))
		160	{
		161	syserr_cb = cb;
		162	}
		163
		164	static void
		165	syserr (const char *msg)
		166	{
		167	if (!msg)
		168	msg = "(libev) system error";
		169
		170	if (syserr_cb)
		171	syserr_cb (msg);
		172	else
		173	{
		174	perror (msg);
		175	abort ();
		176	}
		177	}
		178
		179	static void (alloc)(void *ptr, long size);
		180
		181	void ev_set_allocator (void (cb)(void *ptr, long size))
		182	{
		183	alloc = cb;
		184	}
		185
		186	static void *
		187	ev_realloc (void *ptr, long size)
		188	{
		189	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		190
		191	if (!ptr && size)
		192	{
		193	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		194	abort ();
		195	}
		196
		197	return ptr;
		198	}
		199
		200	#define ev_malloc(size) ev_realloc (0, (size))
		201	#define ev_free(ptr) ev_realloc ((ptr), 0)
		202
		203	/*****************************************************************************/
		204
122	typedef struct	205	typedef struct
123	{	206	{
124	struct ev_watcher_list *head;	207	WL head;
125	unsigned char events;	208	unsigned char events;
126	unsigned char reify;	209	unsigned char reify;
127	} ANFD;	210	} ANFD;
128		211
129	typedef struct	212	typedef struct
130	{	213	{
131	W w;	214	W w;
132	int events;	215	int events;
133	} ANPENDING;	216	} ANPENDING;
134		217
135	#ifdef EV_MULTIPLICITY	218	#if EV_MULTIPLICITY
136		219
137	struct ev_loop	220	struct ev_loop
138	{	221	{
139	# define VAR(name,decl) decl;	222	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	223	#include "ev_vars.h"
141	};
142	# undef VAR	224	#undef VAR
		225	};
143	# include "ev_wrap.h"	226	#include "ev_wrap.h"
		227
		228	struct ev_loop default_loop_struct;
		229	static struct ev_loop *default_loop;
144		230
145	#else	231	#else
146		232
147	# define VAR(name,decl) static decl;	233	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	234	#include "ev_vars.h"
149	# undef VAR	235	#undef VAR
		236
		237	static int default_loop;
150		238
151	#endif	239	#endif
152		240
153	/*****************************************************************************/	241	/*****************************************************************************/
154		242
…		…
185	ev_now (EV_P)	273	ev_now (EV_P)
186	{	274	{
187	return rt_now;	275	return rt_now;
188	}	276	}
189		277
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	278	#define array_roundsize(type,n) ((n) \| 4 & ~3)
191		279
192	#define array_needsize(base,cur,cnt,init) \	280	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	281	if (expect_false ((cnt) > cur)) \
194	{ \	282	{ \
195	int newcnt = cur; \	283	int newcnt = cur; \
196	do \	284	do \
197	{ \	285	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	286	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	287	} \
200	while ((cnt) > newcnt); \	288	while ((cnt) > newcnt); \
201	\	289	\
202	base = realloc (base, sizeof (base) (newcnt)); \	290	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	291	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	292	cur = newcnt; \
205	}	293	}
		294
		295	#define array_slim(type,stem) \
		296	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		297	{ \
		298	stem ## max = array_roundsize (stem ## cnt >> 1); \
		299	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		300	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		301	}
		302
		303	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		304	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		305	#define array_free_microshit(stem) \
		306	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		307
		308	#define array_free(stem, idx) \
		309	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		310
207	/*****************************************************************************/	311	/*****************************************************************************/
208		312
209	static void	313	static void
210	anfds_init (ANFD *base, int count)	314	anfds_init (ANFD *base, int count)
…		…
217		321
218	++base;	322	++base;
219	}	323	}
220	}	324	}
221		325
222	static void	326	void
223	event (EV_P_ W w, int events)	327	ev_feed_event (EV_P_ void *w, int revents)
224	{	328	{
		329	W w_ = (W)w;
		330
225	if (w->pending)	331	if (w_->pending)
226	{	332	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	333	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	334	return;
229	}	335	}
230		336
231	w->pending = ++pendingcnt [ABSPRI (w)];	337	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	338	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	339	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	340	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	341	}
236		342
237	static void	343	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	344	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	345	{
240	int i;	346	int i;
241		347
242	for (i = 0; i < eventcnt; ++i)	348	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	349	ev_feed_event (EV_A_ events [i], type);
244	}	350	}
245		351
246	static void	352	inline void
247	fd_event (EV_P_ int fd, int events)	353	fd_event (EV_P_ int fd, int revents)
248	{	354	{
249	ANFD *anfd = anfds + fd;	355	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	356	struct ev_io *w;
251		357
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	358	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	359	{
254	int ev = w->events & events;	360	int ev = w->events & revents;
255		361
256	if (ev)	362	if (ev)
257	event (EV_A_ (W)w, ev);	363	ev_feed_event (EV_A_ (W)w, ev);
258	}	364	}
		365	}
		366
		367	void
		368	ev_feed_fd_event (EV_P_ int fd, int revents)
		369	{
		370	fd_event (EV_A_ fd, revents);
259	}	371	}
260		372
261	/*****************************************************************************/	373	/*****************************************************************************/
262		374
263	static void	375	static void
…		…
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	388	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	389	events \|= w->events;
278		390
279	anfd->reify = 0;	391	anfd->reify = 0;
280		392
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	393	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	394	anfd->events = events;
285	}
286	}	395	}
287		396
288	fdchangecnt = 0;	397	fdchangecnt = 0;
289	}	398	}
290		399
291	static void	400	static void
292	fd_change (EV_P_ int fd)	401	fd_change (EV_P_ int fd)
293	{	402	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	403	if (anfds [fd].reify)
295	return;	404	return;
296		405
297	anfds [fd].reify = 1;	406	anfds [fd].reify = 1;
298		407
299	++fdchangecnt;	408	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	409	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
301	fdchanges [fdchangecnt - 1] = fd;	410	fdchanges [fdchangecnt - 1] = fd;
302	}	411	}
303		412
304	static void	413	static void
305	fd_kill (EV_P_ int fd)	414	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	416	struct ev_io *w;
308		417
309	while ((w = (struct ev_io *)anfds [fd].head))	418	while ((w = (struct ev_io *)anfds [fd].head))
310	{	419	{
311	ev_io_stop (EV_A_ w);	420	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	421	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	422	}
		423	}
		424
		425	static int
		426	fd_valid (int fd)
		427	{
		428	#ifdef WIN32
		429	return !!win32_get_osfhandle (fd);
		430	#else
		431	return fcntl (fd, F_GETFD) != -1;
		432	#endif
314	}	433	}
315		434
316	/* called on EBADF to verify fds */	435	/* called on EBADF to verify fds */
317	static void	436	static void
318	fd_ebadf (EV_P)	437	fd_ebadf (EV_P)
319	{	438	{
320	int fd;	439	int fd;
321		440
322	for (fd = 0; fd < anfdmax; ++fd)	441	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	442	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	443	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	444	fd_kill (EV_A_ fd);
326	}	445	}
327		446
328	/* called on ENOMEM in select/poll to kill some fds and retry */	447	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	448	static void
330	fd_enomem (EV_P)	449	fd_enomem (EV_P)
331	{	450	{
332	int fd = anfdmax;	451	int fd;
333		452
334	while (fd--)	453	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	454	if (anfds [fd].events)
336	{	455	{
337	close (fd);
338	fd_kill (EV_A_ fd);	456	fd_kill (EV_A_ fd);
339	return;	457	return;
340	}	458	}
341	}	459	}
342		460
		461	/* usually called after fork if method needs to re-arm all fds from scratch */
		462	static void
		463	fd_rearm_all (EV_P)
		464	{
		465	int fd;
		466
		467	/* this should be highly optimised to not do anything but set a flag */
		468	for (fd = 0; fd < anfdmax; ++fd)
		469	if (anfds [fd].events)
		470	{
		471	anfds [fd].events = 0;
		472	fd_change (EV_A_ fd);
		473	}
		474	}
		475
343	/*****************************************************************************/	476	/*****************************************************************************/
344		477
345	static void	478	static void
346	upheap (WT *heap, int k)	479	upheap (WT *heap, int k)
347	{	480	{
348	WT w = heap [k];	481	WT w = heap [k];
349		482
350	while (k && heap [k >> 1]->at > w->at)	483	while (k && heap [k >> 1]->at > w->at)
351	{	484	{
352	heap [k] = heap [k >> 1];	485	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
354	k >>= 1;	487	k >>= 1;
355	}	488	}
356		489
357	heap [k] = w;	490	heap [k] = w;
358	heap [k]->active = k + 1;	491	((W)heap [k])->active = k + 1;
359		492
360	}	493	}
361		494
362	static void	495	static void
363	downheap (WT *heap, int N, int k)	496	downheap (WT *heap, int N, int k)
…		…
373		506
374	if (w->at <= heap [j]->at)	507	if (w->at <= heap [j]->at)
375	break;	508	break;
376		509
377	heap [k] = heap [j];	510	heap [k] = heap [j];
378	heap [k]->active = k + 1;	511	((W)heap [k])->active = k + 1;
379	k = j;	512	k = j;
380	}	513	}
381		514
382	heap [k] = w;	515	heap [k] = w;
383	heap [k]->active = k + 1;	516	((W)heap [k])->active = k + 1;
384	}	517	}
385		518
386	/*****************************************************************************/	519	/*****************************************************************************/
387		520
388	typedef struct	521	typedef struct
389	{	522	{
390	struct ev_watcher_list *head;	523	WL head;
391	sig_atomic_t volatile gotsig;	524	sig_atomic_t volatile gotsig;
392	} ANSIG;	525	} ANSIG;
393		526
394	static ANSIG *signals;	527	static ANSIG *signals;
395	static int signalmax;	528	static int signalmax;
396		529
397	static int sigpipe [2];	530	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	531	static sig_atomic_t volatile gotsig;
		532	static struct ev_io sigev;
399		533
400	static void	534	static void
401	signals_init (ANSIG *base, int count)	535	signals_init (ANSIG *base, int count)
402	{	536	{
403	while (count--)	537	while (count--)
…		…
410	}	544	}
411		545
412	static void	546	static void
413	sighandler (int signum)	547	sighandler (int signum)
414	{	548	{
		549	#if WIN32
		550	signal (signum, sighandler);
		551	#endif
		552
415	signals [signum - 1].gotsig = 1;	553	signals [signum - 1].gotsig = 1;
416		554
417	if (!gotsig)	555	if (!gotsig)
418	{	556	{
419	int old_errno = errno;	557	int old_errno = errno;
420	gotsig = 1;	558	gotsig = 1;
		559	#ifdef WIN32
		560	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		561	#else
421	write (sigpipe [1], &signum, 1);	562	write (sigpipe [1], &signum, 1);
		563	#endif
422	errno = old_errno;	564	errno = old_errno;
423	}	565	}
424	}	566	}
425		567
		568	void
		569	ev_feed_signal_event (EV_P_ int signum)
		570	{
		571	WL w;
		572
		573	#if EV_MULTIPLICITY
		574	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		575	#endif
		576
		577	--signum;
		578
		579	if (signum < 0 \|\| signum >= signalmax)
		580	return;
		581
		582	signals [signum].gotsig = 0;
		583
		584	for (w = signals [signum].head; w; w = w->next)
		585	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		586	}
		587
426	static void	588	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	589	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	590	{
429	struct ev_watcher_list *w;
430	int signum;	591	int signum;
431		592
		593	#ifdef WIN32
		594	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		595	#else
432	read (sigpipe [0], &revents, 1);	596	read (sigpipe [0], &revents, 1);
		597	#endif
433	gotsig = 0;	598	gotsig = 0;
434		599
435	for (signum = signalmax; signum--; )	600	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	601	if (signals [signum].gotsig)
437	{	602	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;
439
440	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}	603	}
444		604
445	static void	605	static void
446	siginit (EV_P)	606	siginit (EV_P)
447	{	607	{
…		…
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	619	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	620	}
461		621
462	/*****************************************************************************/	622	/*****************************************************************************/
463		623
		624	static struct ev_child *childs [PID_HASHSIZE];
		625
464	#ifndef WIN32	626	#ifndef WIN32
		627
		628	static struct ev_signal childev;
465		629
466	#ifndef WCONTINUED	630	#ifndef WCONTINUED
467	# define WCONTINUED 0	631	# define WCONTINUED 0
468	#endif	632	#endif
469		633
…		…
473	struct ev_child *w;	637	struct ev_child *w;
474		638
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	639	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)	640	if (w->pid == pid \|\| !w->pid)
477	{	641	{
478	w->priority = sw->priority; /* need to do it now */	642	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	643	w->rpid = pid;
480	w->rstatus = status;	644	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	645	ev_feed_event (EV_A_ (W)w, EV_CHILD);
482	}	646	}
483	}	647	}
484		648
485	static void	649	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	650	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
488	int pid, status;	652	int pid, status;
489		653
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	654	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	655	{
492	/* make sure we are called again until all childs have been reaped */	656	/* make sure we are called again until all childs have been reaped */
493	event (EV_A_ (W)sw, EV_SIGNAL);	657	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		658
495	child_reap (EV_A_ sw, pid, pid, status);	659	child_reap (EV_A_ sw, pid, pid, status);
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	660	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
497	}	661	}
498	}	662	}
…		…
505	# include "ev_kqueue.c"	669	# include "ev_kqueue.c"
506	#endif	670	#endif
507	#if EV_USE_EPOLL	671	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	672	# include "ev_epoll.c"
509	#endif	673	#endif
510	#if EV_USEV_POLL	674	#if EV_USE_POLL
511	# include "ev_poll.c"	675	# include "ev_poll.c"
512	#endif	676	#endif
513	#if EV_USE_SELECT	677	#if EV_USE_SELECT
514	# include "ev_select.c"	678	# include "ev_select.c"
515	#endif	679	#endif
…		…
560	rt_now = ev_time ();	724	rt_now = ev_time ();
561	mn_now = get_clock ();	725	mn_now = get_clock ();
562	now_floor = mn_now;	726	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	727	rtmn_diff = rt_now - mn_now;
564		728
565	if (pipe (sigpipe))
566	return 0;
567
568	if (methods == EVMETHOD_AUTO)	729	if (methods == EVMETHOD_AUTO)
569	if (!enable_secure () && getenv ("LIBmethodS"))	730	if (!enable_secure () && getenv ("LIBEV_METHODS"))
570	methods = atoi (getenv ("LIBmethodS"));	731	methods = atoi (getenv ("LIBEV_METHODS"));
571	else	732	else
572	methods = EVMETHOD_ANY;	733	methods = EVMETHOD_ANY;
573		734
574	method = 0;	735	method = 0;
		736	#if EV_USE_WIN32
		737	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		738	#endif
575	#if EV_USE_KQUEUE	739	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	740	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577	#endif	741	#endif
578	#if EV_USE_EPOLL	742	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	743	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580	#endif	744	#endif
581	#if EV_USEV_POLL	745	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	746	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583	#endif	747	#endif
584	#if EV_USE_SELECT	748	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	749	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586	#endif	750	#endif
587		751
		752	ev_watcher_init (&sigev, sigcb);
		753	ev_set_priority (&sigev, EV_MAXPRI);
		754	}
		755	}
		756
		757	void
		758	loop_destroy (EV_P)
		759	{
		760	int i;
		761
		762	#if EV_USE_WIN32
		763	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		764	#endif
		765	#if EV_USE_KQUEUE
		766	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		767	#endif
		768	#if EV_USE_EPOLL
		769	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		770	#endif
		771	#if EV_USE_POLL
		772	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		773	#endif
		774	#if EV_USE_SELECT
		775	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		776	#endif
		777
		778	for (i = NUMPRI; i--; )
		779	array_free (pending, [i]);
		780
		781	/* have to use the microsoft-never-gets-it-right macro */
		782	array_free_microshit (fdchange);
		783	array_free_microshit (timer);
		784	array_free_microshit (periodic);
		785	array_free_microshit (idle);
		786	array_free_microshit (prepare);
		787	array_free_microshit (check);
		788
		789	method = 0;
		790	}
		791
		792	static void
		793	loop_fork (EV_P)
		794	{
		795	#if EV_USE_EPOLL
		796	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		797	#endif
		798	#if EV_USE_KQUEUE
		799	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		800	#endif
		801
		802	if (ev_is_active (&sigev))
		803	{
		804	/* default loop */
		805
		806	ev_ref (EV_A);
		807	ev_io_stop (EV_A_ &sigev);
		808	close (sigpipe [0]);
		809	close (sigpipe [1]);
		810
		811	while (pipe (sigpipe))
		812	syserr ("(libev) error creating pipe");
		813
		814	siginit (EV_A);
		815	}
		816
		817	postfork = 0;
		818	}
		819
		820	#if EV_MULTIPLICITY
		821	struct ev_loop *
		822	ev_loop_new (int methods)
		823	{
		824	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		825
		826	memset (loop, 0, sizeof (struct ev_loop));
		827
		828	loop_init (EV_A_ methods);
		829
		830	if (ev_method (EV_A))
		831	return loop;
		832
		833	return 0;
		834	}
		835
		836	void
		837	ev_loop_destroy (EV_P)
		838	{
		839	loop_destroy (EV_A);
		840	ev_free (loop);
		841	}
		842
		843	void
		844	ev_loop_fork (EV_P)
		845	{
		846	postfork = 1;
		847	}
		848
		849	#endif
		850
		851	#if EV_MULTIPLICITY
		852	struct ev_loop *
		853	#else
		854	int
		855	#endif
		856	ev_default_loop (int methods)
		857	{
		858	if (sigpipe [0] == sigpipe [1])
		859	if (pipe (sigpipe))
		860	return 0;
		861
		862	if (!default_loop)
		863	{
		864	#if EV_MULTIPLICITY
		865	struct ev_loop *loop = default_loop = &default_loop_struct;
		866	#else
		867	default_loop = 1;
		868	#endif
		869
		870	loop_init (EV_A_ methods);
		871
588	if (method)	872	if (ev_method (EV_A))
589	{	873	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	874	siginit (EV_A);
593		875
594	#ifndef WIN32	876	#ifndef WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	877	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	878	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	879	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	880	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	881	#endif
600	}	882	}
		883	else
		884	default_loop = 0;
601	}	885	}
602		886
603	return method;	887	return default_loop;
604	}	888	}
605		889
		890	void
		891	ev_default_destroy (void)
		892	{
606	#ifdef EV_MULTIPLICITY	893	#if EV_MULTIPLICITY
607		894	struct ev_loop *loop = default_loop;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/TODO/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	895	#endif
		896
		897	#ifndef WIN32
		898	ev_ref (EV_A); /* child watcher */
		899	ev_signal_stop (EV_A_ &childev);
		900	#endif
		901
		902	ev_ref (EV_A); /* signal watcher */
		903	ev_io_stop (EV_A_ &sigev);
		904
		905	close (sigpipe [0]); sigpipe [0] = 0;
		906	close (sigpipe [1]); sigpipe [1] = 0;
		907
		908	loop_destroy (EV_A);
		909	}
		910
		911	void
		912	ev_default_fork (void)
		913	{
		914	#if EV_MULTIPLICITY
		915	struct ev_loop *loop = default_loop;
		916	#endif
		917
		918	if (method)
		919	postfork = 1;
		920	}
634		921
635	/*****************************************************************************/	922	/*****************************************************************************/
636		923
637	void	924	static int
638	ev_fork_prepare (void)	925	any_pending (EV_P)
639	{	926	{
640	/* nop */	927	int pri;
641	}
642		928
643	void	929	for (pri = NUMPRI; pri--; )
644	ev_fork_parent (void)	930	if (pendingcnt [pri])
645	{	931	return 1;
646	/* nop */
647	}
648		932
649	void	933	return 0;
650	ev_fork_child (void)
651	{
652	/TODO/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}	934	}
666
667	/*****************************************************************************/
668		935
669	static void	936	static void
670	call_pending (EV_P)	937	call_pending (EV_P)
671	{	938	{
672	int pri;	939	int pri;
…		…
685	}	952	}
686		953
687	static void	954	static void
688	timers_reify (EV_P)	955	timers_reify (EV_P)
689	{	956	{
690	while (timercnt && timers [0]->at <= mn_now)	957	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	958	{
692	struct ev_timer *w = timers [0];	959	struct ev_timer *w = timers [0];
		960
		961	assert (("inactive timer on timer heap detected", ev_is_active (w)));
693		962
694	/* first reschedule or stop timer */	963	/* first reschedule or stop timer */
695	if (w->repeat)	964	if (w->repeat)
696	{	965	{
697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	966	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
698	w->at = mn_now + w->repeat;	967	((WT)w)->at = mn_now + w->repeat;
699	downheap ((WT *)timers, timercnt, 0);	968	downheap ((WT *)timers, timercnt, 0);
700	}	969	}
701	else	970	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	971	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		972
704	event (EV_A_ (W)w, EV_TIMEOUT);	973	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	974	}
706	}	975	}
707		976
708	static void	977	static void
709	periodics_reify (EV_P)	978	periodics_reify (EV_P)
710	{	979	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	980	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
712	{	981	{
713	struct ev_periodic *w = periodics [0];	982	struct ev_periodic *w = periodics [0];
714		983
		984	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		985
715	/* first reschedule or stop timer */	986	/* first reschedule or stop timer */
716	if (w->interval)	987	if (w->reschedule_cb)
717	{	988	{
		989	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		990
		991	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		992	downheap ((WT *)periodics, periodiccnt, 0);
		993	}
		994	else if (w->interval)
		995	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	996	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	997	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	998	downheap ((WT *)periodics, periodiccnt, 0);
721	}	999	}
722	else	1000	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1001	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1002
725	event (EV_A_ (W)w, EV_PERIODIC);	1003	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1004	}
727	}	1005	}
728		1006
729	static void	1007	static void
730	periodics_reschedule (EV_P)	1008	periodics_reschedule (EV_P)
…		…
734	/* adjust periodics after time jump */	1012	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1013	for (i = 0; i < periodiccnt; ++i)
736	{	1014	{
737	struct ev_periodic *w = periodics [i];	1015	struct ev_periodic *w = periodics [i];
738		1016
		1017	if (w->reschedule_cb)
		1018	((WT)w)->at = w->reschedule_cb (w, rt_now);
739	if (w->interval)	1019	else if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1020	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
742
743	if (fabs (diff) >= 1e-4)
744	{
745	ev_periodic_stop (EV_A_ w);
746	ev_periodic_start (EV_A_ w);
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}
750	}
751	}	1021	}
		1022
		1023	/* now rebuild the heap */
		1024	for (i = periodiccnt >> 1; i--; )
		1025	downheap ((WT *)periodics, periodiccnt, i);
752	}	1026	}
753		1027
754	inline int	1028	inline int
755	time_update_monotonic (EV_P)	1029	time_update_monotonic (EV_P)
756	{	1030	{
…		…
807	{	1081	{
808	periodics_reschedule (EV_A);	1082	periodics_reschedule (EV_A);
809		1083
810	/* adjust timers. this is easy, as the offset is the same for all */	1084	/* adjust timers. this is easy, as the offset is the same for all */
811	for (i = 0; i < timercnt; ++i)	1085	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1086	((WT)timers [i])->at += rt_now - mn_now;
813	}	1087	}
814		1088
815	mn_now = rt_now;	1089	mn_now = rt_now;
816	}	1090	}
817	}	1091	}
…		…
843	{	1117	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1118	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1119	call_pending (EV_A);
846	}	1120	}
847		1121
		1122	/* we might have forked, so reify kernel state if necessary */
		1123	if (expect_false (postfork))
		1124	loop_fork (EV_A);
		1125
848	/* update fd-related kernel structures */	1126	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1127	fd_reify (EV_A);
850		1128
851	/* calculate blocking time */	1129	/* calculate blocking time */
852		1130
853	/* we only need this for !monotonic clockor timers, but as we basically	1131	/* we only need this for !monotonic clock or timers, but as we basically
854	always have timers, we just calculate it always */	1132	always have timers, we just calculate it always */
855	#if EV_USE_MONOTONIC	1133	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1134	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1135	time_update_monotonic (EV_A);
858	else	1136	else
…		…
868	{	1146	{
869	block = MAX_BLOCKTIME;	1147	block = MAX_BLOCKTIME;
870		1148
871	if (timercnt)	1149	if (timercnt)
872	{	1150	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1151	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
874	if (block > to) block = to;	1152	if (block > to) block = to;
875	}	1153	}
876		1154
877	if (periodiccnt)	1155	if (periodiccnt)
878	{	1156	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1157	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
880	if (block > to) block = to;	1158	if (block > to) block = to;
881	}	1159	}
882		1160
883	if (block < 0.) block = 0.;	1161	if (block < 0.) block = 0.;
884	}	1162	}
…		…
891	/* queue pending timers and reschedule them */	1169	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1170	timers_reify (EV_A); /* relative timers called last */
893	periodics_reify (EV_A); /* absolute timers called first */	1171	periodics_reify (EV_A); /* absolute timers called first */
894		1172
895	/* queue idle watchers unless io or timers are pending */	1173	/* queue idle watchers unless io or timers are pending */
896	if (!pendingcnt)	1174	if (idlecnt && !any_pending (EV_A))
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1175	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898		1176
899	/* queue check watchers, to be executed first */	1177	/* queue check watchers, to be executed first */
900	if (checkcnt)	1178	if (checkcnt)
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1179	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
976	return;	1254	return;
977		1255
978	assert (("ev_io_start called with negative fd", fd >= 0));	1256	assert (("ev_io_start called with negative fd", fd >= 0));
979		1257
980	ev_start (EV_A_ (W)w, 1);	1258	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1259	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1260	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1261
984	fd_change (EV_A_ fd);	1262	fd_change (EV_A_ fd);
985	}	1263	}
986		1264
…		…
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1279	ev_timer_start (EV_P_ struct ev_timer *w)
1002	{	1280	{
1003	if (ev_is_active (w))	1281	if (ev_is_active (w))
1004	return;	1282	return;
1005		1283
1006	w->at += mn_now;	1284	((WT)w)->at += mn_now;
1007		1285
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1286	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		1287
1010	ev_start (EV_A_ (W)w, ++timercnt);	1288	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1289	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1012	timers [timercnt - 1] = w;	1290	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1291	upheap ((WT *)timers, timercnt - 1);
		1292
		1293	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014	}	1294	}
1015		1295
1016	void	1296	void
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1297	ev_timer_stop (EV_P_ struct ev_timer *w)
1018	{	1298	{
1019	ev_clear_pending (EV_A_ (W)w);	1299	ev_clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1300	if (!ev_is_active (w))
1021	return;	1301	return;
1022		1302
		1303	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1304
1023	if (w->active < timercnt--)	1305	if (((W)w)->active < timercnt--)
1024	{	1306	{
1025	timers [w->active - 1] = timers [timercnt];	1307	timers [((W)w)->active - 1] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1308	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027	}	1309	}
1028		1310
1029	w->at = w->repeat;	1311	((WT)w)->at = w->repeat;
1030		1312
1031	ev_stop (EV_A_ (W)w);	1313	ev_stop (EV_A_ (W)w);
1032	}	1314	}
1033		1315
1034	void	1316	void
…		…
1036	{	1318	{
1037	if (ev_is_active (w))	1319	if (ev_is_active (w))
1038	{	1320	{
1039	if (w->repeat)	1321	if (w->repeat)
1040	{	1322	{
1041	w->at = mn_now + w->repeat;	1323	((WT)w)->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1043	}	1325	}
1044	else	1326	else
1045	ev_timer_stop (EV_A_ w);	1327	ev_timer_stop (EV_A_ w);
1046	}	1328	}
1047	else if (w->repeat)	1329	else if (w->repeat)
…		…
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1334	ev_periodic_start (EV_P_ struct ev_periodic *w)
1053	{	1335	{
1054	if (ev_is_active (w))	1336	if (ev_is_active (w))
1055	return;	1337	return;
1056		1338
		1339	if (w->reschedule_cb)
		1340	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1341	else if (w->interval)
		1342	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1343	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059	/* this formula differs from the one in periodic_reify because we do not always round up */	1344	/* this formula differs from the one in periodic_reify because we do not always round up */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1345	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1346	}
1062		1347
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1348	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1349	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1065	periodics [periodiccnt - 1] = w;	1350	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1351	upheap ((WT *)periodics, periodiccnt - 1);
		1352
		1353	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067	}	1354	}
1068		1355
1069	void	1356	void
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1357	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071	{	1358	{
1072	ev_clear_pending (EV_A_ (W)w);	1359	ev_clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1360	if (!ev_is_active (w))
1074	return;	1361	return;
1075		1362
		1363	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1364
1076	if (w->active < periodiccnt--)	1365	if (((W)w)->active < periodiccnt--)
1077	{	1366	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1367	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1368	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080	}	1369	}
1081		1370
		1371	ev_stop (EV_A_ (W)w);
		1372	}
		1373
		1374	void
		1375	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1376	{
		1377	ev_periodic_stop (EV_A_ w);
		1378	ev_periodic_start (EV_A_ w);
		1379	}
		1380
		1381	void
		1382	ev_idle_start (EV_P_ struct ev_idle *w)
		1383	{
		1384	if (ev_is_active (w))
		1385	return;
		1386
		1387	ev_start (EV_A_ (W)w, ++idlecnt);
		1388	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1389	idles [idlecnt - 1] = w;
		1390	}
		1391
		1392	void
		1393	ev_idle_stop (EV_P_ struct ev_idle *w)
		1394	{
		1395	ev_clear_pending (EV_A_ (W)w);
		1396	if (ev_is_active (w))
		1397	return;
		1398
		1399	idles [((W)w)->active - 1] = idles [--idlecnt];
		1400	ev_stop (EV_A_ (W)w);
		1401	}
		1402
		1403	void
		1404	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1405	{
		1406	if (ev_is_active (w))
		1407	return;
		1408
		1409	ev_start (EV_A_ (W)w, ++preparecnt);
		1410	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1411	prepares [preparecnt - 1] = w;
		1412	}
		1413
		1414	void
		1415	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1416	{
		1417	ev_clear_pending (EV_A_ (W)w);
		1418	if (ev_is_active (w))
		1419	return;
		1420
		1421	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1422	ev_stop (EV_A_ (W)w);
		1423	}
		1424
		1425	void
		1426	ev_check_start (EV_P_ struct ev_check *w)
		1427	{
		1428	if (ev_is_active (w))
		1429	return;
		1430
		1431	ev_start (EV_A_ (W)w, ++checkcnt);
		1432	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1433	checks [checkcnt - 1] = w;
		1434	}
		1435
		1436	void
		1437	ev_check_stop (EV_P_ struct ev_check *w)
		1438	{
		1439	ev_clear_pending (EV_A_ (W)w);
		1440	if (ev_is_active (w))
		1441	return;
		1442
		1443	checks [((W)w)->active - 1] = checks [--checkcnt];
1082	ev_stop (EV_A_ (W)w);	1444	ev_stop (EV_A_ (W)w);
1083	}	1445	}
1084		1446
1085	#ifndef SA_RESTART	1447	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1448	# define SA_RESTART 0
1087	#endif	1449	#endif
1088		1450
1089	void	1451	void
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1452	ev_signal_start (EV_P_ struct ev_signal *w)
1091	{	1453	{
		1454	#if EV_MULTIPLICITY
		1455	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1456	#endif
1092	if (ev_is_active (w))	1457	if (ev_is_active (w))
1093	return;	1458	return;
1094		1459
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1460	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1461
1097	ev_start (EV_A_ (W)w, 1);	1462	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1463	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1464	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1465
1101	if (!w->next)	1466	if (!((WL)w)->next)
1102	{	1467	{
		1468	#if WIN32
		1469	signal (w->signum, sighandler);
		1470	#else
1103	struct sigaction sa;	1471	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1472	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1473	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1474	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1475	sigaction (w->signum, &sa, 0);
		1476	#endif
1108	}	1477	}
1109	}	1478	}
1110		1479
1111	void	1480	void
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1481	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1121	if (!signals [w->signum - 1].head)	1490	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1491	signal (w->signum, SIG_DFL);
1123	}	1492	}
1124		1493
1125	void	1494	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)
1127	{
1128	if (ev_is_active (w))
1129	return;
1130
1131	ev_start (EV_A_ (W)w, ++idlecnt);
1132	array_needsize (idles, idlemax, idlecnt, );
1133	idles [idlecnt - 1] = w;
1134	}
1135
1136	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)
1138	{
1139	ev_clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))
1141	return;
1142
1143	idles [w->active - 1] = idles [--idlecnt];
1144	ev_stop (EV_A_ (W)w);
1145	}
1146
1147	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
1149	{
1150	if (ev_is_active (w))
1151	return;
1152
1153	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );
1155	prepares [preparecnt - 1] = w;
1156	}
1157
1158	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160	{
1161	ev_clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))
1163	return;
1164
1165	prepares [w->active - 1] = prepares [--preparecnt];
1166	ev_stop (EV_A_ (W)w);
1167	}
1168
1169	void
1170	ev_check_start (EV_P_ struct ev_check *w)
1171	{
1172	if (ev_is_active (w))
1173	return;
1174
1175	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );
1177	checks [checkcnt - 1] = w;
1178	}
1179
1180	void
1181	ev_check_stop (EV_P_ struct ev_check *w)
1182	{
1183	ev_clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))
1185	return;
1186
1187	checks [w->active - 1] = checks [--checkcnt];
1188	ev_stop (EV_A_ (W)w);
1189	}
1190
1191	void
1192	ev_child_start (EV_P_ struct ev_child *w)	1495	ev_child_start (EV_P_ struct ev_child *w)
1193	{	1496	{
		1497	#if EV_MULTIPLICITY
		1498	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1499	#endif
1194	if (ev_is_active (w))	1500	if (ev_is_active (w))
1195	return;	1501	return;
1196		1502
1197	ev_start (EV_A_ (W)w, 1);	1503	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1504	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1225	void (cb)(int revents, void arg) = once->cb;	1531	void (cb)(int revents, void arg) = once->cb;
1226	void *arg = once->arg;	1532	void *arg = once->arg;
1227		1533
1228	ev_io_stop (EV_A_ &once->io);	1534	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	1535	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	1536	ev_free (once);
1231		1537
1232	cb (revents, arg);	1538	cb (revents, arg);
1233	}	1539	}
1234		1540
1235	static void	1541	static void
…		…
1245	}	1551	}
1246		1552
1247	void	1553	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1554	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1249	{	1555	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	1556	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1251		1557
1252	if (!once)	1558	if (!once)
1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1559	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1254	else	1560	else
1255	{	1561	{
…		…
1270	ev_timer_start (EV_A_ &once->to);	1576	ev_timer_start (EV_A_ &once->to);
1271	}	1577	}
1272	}	1578	}
1273	}	1579	}
1274		1580
1275	/*****************************************************************************/
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif
1331
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}
1352
1353	#endif
1354
1355
1356
1357

Diff Legend

-–
+Removed lines
-+
+Added lines
-<
+Changed lines
->
+Changed lines

Comparing libev/ev.c (file contents): Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs. Revision 1.80 by root, Fri Nov 9 15:30:59 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.80 by root, Fri Nov 9 15:30:59 2007 UTC