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

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 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
…		…
113		146
114	typedef struct ev_watcher *W;	147	typedef struct ev_watcher *W;
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 ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	151	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		152
122	static int have_monotonic; /* runtime */	153	#include "ev_win32.c"
123		154
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	155	/*****************************************************************************/
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
127		156
128	static int activecnt; /* number of active events */	157	static void (syserr_cb)(const char msg);
129		158
130	#if EV_USE_SELECT	159	void ev_set_syserr_cb (void (cb)(const char msg))
131	static unsigned char vec_ri, vec_ro, vec_wi, vec_wo;	160	{
132	static int vec_max;	161	syserr_cb = cb;
133	#endif	162	}
134		163
135	#if EV_USEV_POLL	164	static void
136	static struct pollfd *polls;	165	syserr (const char *msg)
137	static int pollmax, pollcnt;	166	{
138	static int pollidxs; / maps fds into structure indices */	167	if (!msg)
139	static int pollidxmax;	168	msg = "(libev) system error";
140	#endif
141		169
142	#if EV_USE_EPOLL	170	if (syserr_cb)
143	static int epoll_fd = -1;	171	syserr_cb (msg);
		172	else
		173	{
		174	perror (msg);
		175	abort ();
		176	}
		177	}
144		178
145	static struct epoll_event *events;	179	static void (alloc)(void *ptr, long size);
146	static int eventmax;
147	#endif
148		180
149	#if EV_USE_KQUEUE	181	void ev_set_allocator (void (cb)(void *ptr, long size))
150	static int kqueue_fd;	182	{
151	static struct kevent *kqueue_changes;	183	alloc = cb;
152	static int kqueue_changemax, kqueue_changecnt;	184	}
153	static struct kevent *kqueue_events;	185
154	static int kqueue_eventmax;	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
		205	typedef struct
		206	{
		207	WL head;
		208	unsigned char events;
		209	unsigned char reify;
		210	} ANFD;
		211
		212	typedef struct
		213	{
		214	W w;
		215	int events;
		216	} ANPENDING;
		217
		218	#if EV_MULTIPLICITY
		219
		220	struct ev_loop
		221	{
		222	#define VAR(name,decl) decl;
		223	#include "ev_vars.h"
		224	#undef VAR
		225	};
		226	#include "ev_wrap.h"
		227
		228	struct ev_loop default_loop_struct;
		229	static struct ev_loop *default_loop;
		230
		231	#else
		232
		233	#define VAR(name,decl) static decl;
		234	#include "ev_vars.h"
		235	#undef VAR
		236
		237	static int default_loop;
		238
155	#endif	239	#endif
156		240
157	/*****************************************************************************/	241	/*****************************************************************************/
158		242
159	inline ev_tstamp	243	inline ev_tstamp
…		…
189	ev_now (EV_P)	273	ev_now (EV_P)
190	{	274	{
191	return rt_now;	275	return rt_now;
192	}	276	}
193		277
194	#define array_roundsize(base,n) ((n) \| 4 & ~3)	278	#define array_roundsize(type,n) ((n) \| 4 & ~3)
195		279
196	#define array_needsize(base,cur,cnt,init) \	280	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	281	if (expect_false ((cnt) > cur)) \
198	{ \	282	{ \
199	int newcnt = cur; \	283	int newcnt = cur; \
200	do \	284	do \
201	{ \	285	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	286	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	287	} \
204	while ((cnt) > newcnt); \	288	while ((cnt) > newcnt); \
205	\	289	\
206	base = realloc (base, sizeof (base) (newcnt)); \	290	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
207	init (base + cur, newcnt - cur); \	291	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	292	cur = newcnt; \
209	}	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;
210		310
211	/*****************************************************************************/	311	/*****************************************************************************/
212
213	typedef struct
214	{
215	struct ev_watcher_list *head;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219
220	static ANFD *anfds;
221	static int anfdmax;
222		312
223	static void	313	static void
224	anfds_init (ANFD *base, int count)	314	anfds_init (ANFD *base, int count)
225	{	315	{
226	while (count--)	316	while (count--)
…		…
231		321
232	++base;	322	++base;
233	}	323	}
234	}	324	}
235		325
236	typedef struct	326	void
237	{
238	W w;
239	int events;
240	} ANPENDING;
241
242	static ANPENDING *pendings [NUMPRI];
243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245	static void
246	event (EV_P_ W w, int events)	327	ev_feed_event (EV_P_ void *w, int revents)
247	{	328	{
		329	W w_ = (W)w;
		330
248	if (w->pending)	331	if (w_->pending)
249	{	332	{
250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	333	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
251	return;	334	return;
252	}	335	}
253		336
254	w->pending = ++pendingcnt [ABSPRI (w)];	337	w_->pending = ++pendingcnt [ABSPRI (w_)];
255	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));
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	339	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	340	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258	}	341	}
259		342
260	static void	343	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)	344	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{	345	{
263	int i;	346	int i;
264		347
265	for (i = 0; i < eventcnt; ++i)	348	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);	349	ev_feed_event (EV_A_ events [i], type);
267	}	350	}
268		351
269	static void	352	inline void
270	fd_event (EV_P_ int fd, int events)	353	fd_event (EV_P_ int fd, int revents)
271	{	354	{
272	ANFD *anfd = anfds + fd;	355	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	356	struct ev_io *w;
274		357
275	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)
276	{	359	{
277	int ev = w->events & events;	360	int ev = w->events & revents;
278		361
279	if (ev)	362	if (ev)
280	event (EV_A_ (W)w, ev);	363	ev_feed_event (EV_A_ (W)w, ev);
281	}	364	}
		365	}
		366
		367	void
		368	ev_feed_fd_event (EV_P_ int fd, int revents)
		369	{
		370	fd_event (EV_A_ fd, revents);
282	}	371	}
283		372
284	/*****************************************************************************/	373	/*****************************************************************************/
285
286	static int *fdchanges;
287	static int fdchangemax, fdchangecnt;
288		374
289	static void	375	static void
290	fd_reify (EV_P)	376	fd_reify (EV_P)
291	{	377	{
292	int i;	378	int i;
…		…
302	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)
303	events \|= w->events;	389	events \|= w->events;
304		390
305	anfd->reify = 0;	391	anfd->reify = 0;
306		392
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	393	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	394	anfd->events = events;
311	}
312	}	395	}
313		396
314	fdchangecnt = 0;	397	fdchangecnt = 0;
315	}	398	}
316		399
317	static void	400	static void
318	fd_change (EV_P_ int fd)	401	fd_change (EV_P_ int fd)
319	{	402	{
320	if (anfds [fd].reify \|\| fdchangecnt < 0)	403	if (anfds [fd].reify)
321	return;	404	return;
322		405
323	anfds [fd].reify = 1;	406	anfds [fd].reify = 1;
324		407
325	++fdchangecnt;	408	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	409	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327	fdchanges [fdchangecnt - 1] = fd;	410	fdchanges [fdchangecnt - 1] = fd;
328	}	411	}
329		412
330	static void	413	static void
331	fd_kill (EV_P_ int fd)	414	fd_kill (EV_P_ int fd)
…		…
333	struct ev_io *w;	416	struct ev_io *w;
334		417
335	while ((w = (struct ev_io *)anfds [fd].head))	418	while ((w = (struct ev_io *)anfds [fd].head))
336	{	419	{
337	ev_io_stop (EV_A_ w);	420	ev_io_stop (EV_A_ w);
338	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);
339	}	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
340	}	433	}
341		434
342	/* called on EBADF to verify fds */	435	/* called on EBADF to verify fds */
343	static void	436	static void
344	fd_ebadf (EV_P)	437	fd_ebadf (EV_P)
345	{	438	{
346	int fd;	439	int fd;
347		440
348	for (fd = 0; fd < anfdmax; ++fd)	441	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	442	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	443	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	444	fd_kill (EV_A_ fd);
352	}	445	}
353		446
354	/* 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 */
355	static void	448	static void
356	fd_enomem (EV_P)	449	fd_enomem (EV_P)
357	{	450	{
358	int fd = anfdmax;	451	int fd;
359		452
360	while (fd--)	453	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	454	if (anfds [fd].events)
362	{	455	{
363	close (fd);
364	fd_kill (EV_A_ fd);	456	fd_kill (EV_A_ fd);
365	return;	457	return;
366	}	458	}
367	}	459	}
368		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
369	/*****************************************************************************/	476	/*****************************************************************************/
370		477
371	static struct ev_timer **timers;
372	static int timermax, timercnt;
373
374	static struct ev_periodic **periodics;
375	static int periodicmax, periodiccnt;
376
377	static void	478	static void
378	upheap (WT *timers, int k)	479	upheap (WT *heap, int k)
379	{	480	{
380	WT w = timers [k];	481	WT w = heap [k];
381		482
382	while (k && timers [k >> 1]->at > w->at)	483	while (k && heap [k >> 1]->at > w->at)
383	{	484	{
384	timers [k] = timers [k >> 1];	485	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	486	((W)heap [k])->active = k + 1;
386	k >>= 1;	487	k >>= 1;
387	}	488	}
388		489
389	timers [k] = w;	490	heap [k] = w;
390	timers [k]->active = k + 1;	491	((W)heap [k])->active = k + 1;
391		492
392	}	493	}
393		494
394	static void	495	static void
395	downheap (WT *timers, int N, int k)	496	downheap (WT *heap, int N, int k)
396	{	497	{
397	WT w = timers [k];	498	WT w = heap [k];
398		499
399	while (k < (N >> 1))	500	while (k < (N >> 1))
400	{	501	{
401	int j = k << 1;	502	int j = k << 1;
402		503
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	504	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	505	++j;
405		506
406	if (w->at <= timers [j]->at)	507	if (w->at <= heap [j]->at)
407	break;	508	break;
408		509
409	timers [k] = timers [j];	510	heap [k] = heap [j];
410	timers [k]->active = k + 1;	511	((W)heap [k])->active = k + 1;
411	k = j;	512	k = j;
412	}	513	}
413		514
414	timers [k] = w;	515	heap [k] = w;
415	timers [k]->active = k + 1;	516	((W)heap [k])->active = k + 1;
416	}	517	}
417		518
418	/*****************************************************************************/	519	/*****************************************************************************/
419		520
420	typedef struct	521	typedef struct
421	{	522	{
422	struct ev_watcher_list *head;	523	WL head;
423	sig_atomic_t volatile gotsig;	524	sig_atomic_t volatile gotsig;
424	} ANSIG;	525	} ANSIG;
425		526
426	static ANSIG *signals;	527	static ANSIG *signals;
427	static int signalmax;	528	static int signalmax;
…		…
443	}	544	}
444		545
445	static void	546	static void
446	sighandler (int signum)	547	sighandler (int signum)
447	{	548	{
		549	#if WIN32
		550	signal (signum, sighandler);
		551	#endif
		552
448	signals [signum - 1].gotsig = 1;	553	signals [signum - 1].gotsig = 1;
449		554
450	if (!gotsig)	555	if (!gotsig)
451	{	556	{
452	int old_errno = errno;	557	int old_errno = errno;
453	gotsig = 1;	558	gotsig = 1;
		559	#ifdef WIN32
		560	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		561	#else
454	write (sigpipe [1], &signum, 1);	562	write (sigpipe [1], &signum, 1);
		563	#endif
455	errno = old_errno;	564	errno = old_errno;
456	}	565	}
457	}	566	}
458		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
459	static void	588	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	589	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	590	{
462	struct ev_watcher_list *w;
463	int signum;	591	int signum;
464		592
		593	#ifdef WIN32
		594	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		595	#else
465	read (sigpipe [0], &revents, 1);	596	read (sigpipe [0], &revents, 1);
		597	#endif
466	gotsig = 0;	598	gotsig = 0;
467		599
468	for (signum = signalmax; signum--; )	600	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	601	if (signals [signum].gotsig)
470	{	602	ev_feed_signal_event (EV_A_ signum + 1);
471	signals [signum].gotsig = 0;
472
473	for (w = signals [signum].head; w; w = w->next)
474	event (EV_A_ (W)w, EV_SIGNAL);
475	}
476	}	603	}
477		604
478	static void	605	static void
479	siginit (EV_P)	606	siginit (EV_P)
480	{	607	{
…		…
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	613	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	614	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif	615	#endif
489		616
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	617	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	618	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	619	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	620	}
494		621
495	/*****************************************************************************/	622	/*****************************************************************************/
496		623
497	static struct ev_idle **idles;
498	static int idlemax, idlecnt;
499
500	static struct ev_prepare **prepares;
501	static int preparemax, preparecnt;
502
503	static struct ev_check **checks;
504	static int checkmax, checkcnt;
505
506	/*****************************************************************************/
507
508	static struct ev_child *childs [PID_HASHSIZE];	624	static struct ev_child *childs [PID_HASHSIZE];
		625
		626	#ifndef WIN32
		627
509	static struct ev_signal childev;	628	static struct ev_signal childev;
510
511	#ifndef WIN32
512		629
513	#ifndef WCONTINUED	630	#ifndef WCONTINUED
514	# define WCONTINUED 0	631	# define WCONTINUED 0
515	#endif	632	#endif
516		633
…		…
520	struct ev_child *w;	637	struct ev_child *w;
521		638
522	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)
523	if (w->pid == pid \|\| !w->pid)	640	if (w->pid == pid \|\| !w->pid)
524	{	641	{
525	w->priority = sw->priority; /* need to do it now */	642	ev_priority (w) = ev_priority (sw); /* need to do it now */
526	w->rpid = pid;	643	w->rpid = pid;
527	w->rstatus = status;	644	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	645	ev_feed_event (EV_A_ (W)w, EV_CHILD);
529	}	646	}
530	}	647	}
531		648
532	static void	649	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	650	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
535	int pid, status;	652	int pid, status;
536		653
537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	654	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
538	{	655	{
539	/* 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 */
540	event (EV_A_ (W)sw, EV_SIGNAL);	657	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		658
542	child_reap (EV_A_ sw, pid, pid, status);	659	child_reap (EV_A_ sw, pid, pid, status);
543	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 */
544	}	661	}
545	}	662	}
…		…
552	# include "ev_kqueue.c"	669	# include "ev_kqueue.c"
553	#endif	670	#endif
554	#if EV_USE_EPOLL	671	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	672	# include "ev_epoll.c"
556	#endif	673	#endif
557	#if EV_USEV_POLL	674	#if EV_USE_POLL
558	# include "ev_poll.c"	675	# include "ev_poll.c"
559	#endif	676	#endif
560	#if EV_USE_SELECT	677	#if EV_USE_SELECT
561	# include "ev_select.c"	678	# include "ev_select.c"
562	#endif	679	#endif
…		…
589	ev_method (EV_P)	706	ev_method (EV_P)
590	{	707	{
591	return method;	708	return method;
592	}	709	}
593		710
594	int	711	static void
595	ev_init (EV_P_ int methods)	712	loop_init (EV_P_ int methods)
596	{	713	{
597	if (!method)	714	if (!method)
598	{	715	{
599	#if EV_USE_MONOTONIC	716	#if EV_USE_MONOTONIC
600	{	717	{
…		…
605	#endif	722	#endif
606		723
607	rt_now = ev_time ();	724	rt_now = ev_time ();
608	mn_now = get_clock ();	725	mn_now = get_clock ();
609	now_floor = mn_now;	726	now_floor = mn_now;
610	diff = rt_now - mn_now;	727	rtmn_diff = rt_now - mn_now;
611
612	if (pipe (sigpipe))
613	return 0;
614		728
615	if (methods == EVMETHOD_AUTO)	729	if (methods == EVMETHOD_AUTO)
616	if (!enable_secure () && getenv ("LIBmethodS"))	730	if (!enable_secure () && getenv ("LIBEV_METHODS"))
617	methods = atoi (getenv ("LIBmethodS"));	731	methods = atoi (getenv ("LIBEV_METHODS"));
618	else	732	else
619	methods = EVMETHOD_ANY;	733	methods = EVMETHOD_ANY;
620		734
621	method = 0;	735	method = 0;
		736	#if EV_USE_WIN32
		737	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		738	#endif
622	#if EV_USE_KQUEUE	739	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	740	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
624	#endif	741	#endif
625	#if EV_USE_EPOLL	742	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	743	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
627	#endif	744	#endif
628	#if EV_USEV_POLL	745	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	746	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
630	#endif	747	#endif
631	#if EV_USE_SELECT	748	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	749	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
633	#endif	750	#endif
634		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
635	if (method)	872	if (ev_method (EV_A))
636	{	873	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	874	siginit (EV_A);
640		875
641	#ifndef WIN32	876	#ifndef WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	877	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	878	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	879	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	880	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	881	#endif
647	}	882	}
		883	else
		884	default_loop = 0;
648	}	885	}
649		886
650	return method;	887	return default_loop;
		888	}
		889
		890	void
		891	ev_default_destroy (void)
		892	{
		893	#if EV_MULTIPLICITY
		894	struct ev_loop *loop = default_loop;
		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;
651	}	920	}
652		921
653	/*****************************************************************************/	922	/*****************************************************************************/
654		923
655	void	924	static int
656	ev_fork_prepare (void)	925	any_pending (EV_P)
657	{	926	{
658	/* nop */	927	int pri;
659	}
660		928
661	void	929	for (pri = NUMPRI; pri--; )
662	ev_fork_parent (void)	930	if (pendingcnt [pri])
663	{	931	return 1;
664	/* nop */
665	}
666		932
667	void	933	return 0;
668	ev_fork_child (void)
669	{
670	#if EV_USE_EPOLL
671	if (method == EVMETHOD_EPOLL)
672	epoll_postfork_child ();
673	#endif
674
675	ev_io_stop (&sigev);
676	close (sigpipe [0]);
677	close (sigpipe [1]);
678	pipe (sigpipe);
679	siginit ();
680	}	934	}
681
682	/*****************************************************************************/
683		935
684	static void	936	static void
685	call_pending (EV_P)	937	call_pending (EV_P)
686	{	938	{
687	int pri;	939	int pri;
…		…
700	}	952	}
701		953
702	static void	954	static void
703	timers_reify (EV_P)	955	timers_reify (EV_P)
704	{	956	{
705	while (timercnt && timers [0]->at <= mn_now)	957	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	958	{
707	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)));
708		962
709	/* first reschedule or stop timer */	963	/* first reschedule or stop timer */
710	if (w->repeat)	964	if (w->repeat)
711	{	965	{
712	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.));
713	w->at = mn_now + w->repeat;	967	((WT)w)->at = mn_now + w->repeat;
714	downheap ((WT *)timers, timercnt, 0);	968	downheap ((WT *)timers, timercnt, 0);
715	}	969	}
716	else	970	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	971	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		972
719	event ((W)w, EV_TIMEOUT);	973	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	974	}
721	}	975	}
722		976
723	static void	977	static void
724	periodics_reify (EV_P)	978	periodics_reify (EV_P)
725	{	979	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	980	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
727	{	981	{
728	struct ev_periodic *w = periodics [0];	982	struct ev_periodic *w = periodics [0];
729		983
		984	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		985
730	/* first reschedule or stop timer */	986	/* first reschedule or stop timer */
731	if (w->interval)	987	if (w->reschedule_cb)
732	{	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	{
733	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;
734	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));
735	downheap ((WT *)periodics, periodiccnt, 0);	998	downheap ((WT *)periodics, periodiccnt, 0);
736	}	999	}
737	else	1000	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1001	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1002
740	event (EV_A_ (W)w, EV_PERIODIC);	1003	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1004	}
742	}	1005	}
743		1006
744	static void	1007	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1008	periodics_reschedule (EV_P)
746	{	1009	{
747	int i;	1010	int i;
748		1011
749	/* adjust periodics after time jump */	1012	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1013	for (i = 0; i < periodiccnt; ++i)
751	{	1014	{
752	struct ev_periodic *w = periodics [i];	1015	struct ev_periodic *w = periodics [i];
753		1016
		1017	if (w->reschedule_cb)
		1018	((WT)w)->at = w->reschedule_cb (w, rt_now);
754	if (w->interval)	1019	else if (w->interval)
755	{
756	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;
757
758	if (fabs (diff) >= 1e-4)
759	{
760	ev_periodic_stop (EV_A_ w);
761	ev_periodic_start (EV_A_ w);
762
763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
764	}
765	}
766	}	1021	}
		1022
		1023	/* now rebuild the heap */
		1024	for (i = periodiccnt >> 1; i--; )
		1025	downheap ((WT *)periodics, periodiccnt, i);
767	}	1026	}
768		1027
769	inline int	1028	inline int
770	time_update_monotonic (EV_P)	1029	time_update_monotonic (EV_P)
771	{	1030	{
772	mn_now = get_clock ();	1031	mn_now = get_clock ();
773		1032
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1033	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1034	{
776	rt_now = mn_now + diff;	1035	rt_now = rtmn_diff + mn_now;
777	return 0;	1036	return 0;
778	}	1037	}
779	else	1038	else
780	{	1039	{
781	now_floor = mn_now;	1040	now_floor = mn_now;
…		…
792	#if EV_USE_MONOTONIC	1051	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1052	if (expect_true (have_monotonic))
794	{	1053	{
795	if (time_update_monotonic (EV_A))	1054	if (time_update_monotonic (EV_A))
796	{	1055	{
797	ev_tstamp odiff = diff;	1056	ev_tstamp odiff = rtmn_diff;
798		1057
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1058	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{	1059	{
801	diff = rt_now - mn_now;	1060	rtmn_diff = rt_now - mn_now;
802		1061
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1062	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1063	return; /* all is well */
805		1064
806	rt_now = ev_time ();	1065	rt_now = ev_time ();
807	mn_now = get_clock ();	1066	mn_now = get_clock ();
808	now_floor = mn_now;	1067	now_floor = mn_now;
809	}	1068	}
810		1069
811	periodics_reschedule (EV_A_ diff - odiff);	1070	periodics_reschedule (EV_A);
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1071	/* no timer adjustment, as the monotonic clock doesn't jump */
		1072	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1073	}
814	}	1074	}
815	else	1075	else
816	#endif	1076	#endif
817	{	1077	{
818	rt_now = ev_time ();	1078	rt_now = ev_time ();
819		1079
820	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1080	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1081	{
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1082	periodics_reschedule (EV_A);
823		1083
824	/* 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 */
825	for (i = 0; i < timercnt; ++i)	1085	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1086	((WT)timers [i])->at += rt_now - mn_now;
827	}	1087	}
828		1088
829	mn_now = rt_now;	1089	mn_now = rt_now;
830	}	1090	}
831	}	1091	}
…		…
857	{	1117	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1118	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1119	call_pending (EV_A);
860	}	1120	}
861		1121
		1122	/* we might have forked, so reify kernel state if necessary */
		1123	if (expect_false (postfork))
		1124	loop_fork (EV_A);
		1125
862	/* update fd-related kernel structures */	1126	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1127	fd_reify (EV_A);
864		1128
865	/* calculate blocking time */	1129	/* calculate blocking time */
866		1130
867	/* 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
868	always have timers, we just calculate it always */	1132	always have timers, we just calculate it always */
869	#if EV_USE_MONOTONIC	1133	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1134	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1135	time_update_monotonic (EV_A);
872	else	1136	else
…		…
882	{	1146	{
883	block = MAX_BLOCKTIME;	1147	block = MAX_BLOCKTIME;
884		1148
885	if (timercnt)	1149	if (timercnt)
886	{	1150	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1151	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888	if (block > to) block = to;	1152	if (block > to) block = to;
889	}	1153	}
890		1154
891	if (periodiccnt)	1155	if (periodiccnt)
892	{	1156	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1157	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
894	if (block > to) block = to;	1158	if (block > to) block = to;
895	}	1159	}
896		1160
897	if (block < 0.) block = 0.;	1161	if (block < 0.) block = 0.;
898	}	1162	}
…		…
905	/* queue pending timers and reschedule them */	1169	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1170	timers_reify (EV_A); /* relative timers called last */
907	periodics_reify (EV_A); /* absolute timers called first */	1171	periodics_reify (EV_A); /* absolute timers called first */
908		1172
909	/* queue idle watchers unless io or timers are pending */	1173	/* queue idle watchers unless io or timers are pending */
910	if (!pendingcnt)	1174	if (idlecnt && !any_pending (EV_A))
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1175	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912		1176
913	/* queue check watchers, to be executed first */	1177	/* queue check watchers, to be executed first */
914	if (checkcnt)	1178	if (checkcnt)
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1179	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
990	return;	1254	return;
991		1255
992	assert (("ev_io_start called with negative fd", fd >= 0));	1256	assert (("ev_io_start called with negative fd", fd >= 0));
993		1257
994	ev_start (EV_A_ (W)w, 1);	1258	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1259	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1260	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1261
998	fd_change (EV_A_ fd);	1262	fd_change (EV_A_ fd);
999	}	1263	}
1000		1264
…		…
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1279	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1280	{
1017	if (ev_is_active (w))	1281	if (ev_is_active (w))
1018	return;	1282	return;
1019		1283
1020	w->at += mn_now;	1284	((WT)w)->at += mn_now;
1021		1285
1022	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.));
1023		1287
1024	ev_start (EV_A_ (W)w, ++timercnt);	1288	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1289	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1026	timers [timercnt - 1] = w;	1290	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1291	upheap ((WT *)timers, timercnt - 1);
		1292
		1293	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1294	}
1029		1295
1030	void	1296	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1297	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1298	{
1033	ev_clear_pending (EV_A_ (W)w);	1299	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1300	if (!ev_is_active (w))
1035	return;	1301	return;
1036		1302
		1303	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1304
1037	if (w->active < timercnt--)	1305	if (((W)w)->active < timercnt--)
1038	{	1306	{
1039	timers [w->active - 1] = timers [timercnt];	1307	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1308	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1309	}
1042		1310
1043	w->at = w->repeat;	1311	((WT)w)->at = w->repeat;
1044		1312
1045	ev_stop (EV_A_ (W)w);	1313	ev_stop (EV_A_ (W)w);
1046	}	1314	}
1047		1315
1048	void	1316	void
…		…
1050	{	1318	{
1051	if (ev_is_active (w))	1319	if (ev_is_active (w))
1052	{	1320	{
1053	if (w->repeat)	1321	if (w->repeat)
1054	{	1322	{
1055	w->at = mn_now + w->repeat;	1323	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1325	}
1058	else	1326	else
1059	ev_timer_stop (EV_A_ w);	1327	ev_timer_stop (EV_A_ w);
1060	}	1328	}
1061	else if (w->repeat)	1329	else if (w->repeat)
…		…
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1334	ev_periodic_start (EV_P_ struct ev_periodic *w)
1067	{	1335	{
1068	if (ev_is_active (w))	1336	if (ev_is_active (w))
1069	return;	1337	return;
1070		1338
		1339	if (w->reschedule_cb)
		1340	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1341	else if (w->interval)
		1342	{
1071	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.));
1072
1073	/* 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 */
1074	if (w->interval)
1075	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	}
1076		1347
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1348	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1349	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1079	periodics [periodiccnt - 1] = w;	1350	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1351	upheap ((WT *)periodics, periodiccnt - 1);
		1352
		1353	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1354	}
1082		1355
1083	void	1356	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1357	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1358	{
1086	ev_clear_pending (EV_A_ (W)w);	1359	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1360	if (!ev_is_active (w))
1088	return;	1361	return;
1089		1362
		1363	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1364
1090	if (w->active < periodiccnt--)	1365	if (((W)w)->active < periodiccnt--)
1091	{	1366	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1367	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1368	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1369	}
1095		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];
1096	ev_stop (EV_A_ (W)w);	1444	ev_stop (EV_A_ (W)w);
1097	}	1445	}
1098		1446
1099	#ifndef SA_RESTART	1447	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1448	# define SA_RESTART 0
1101	#endif	1449	#endif
1102		1450
1103	void	1451	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1452	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1453	{
		1454	#if EV_MULTIPLICITY
		1455	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1456	#endif
1106	if (ev_is_active (w))	1457	if (ev_is_active (w))
1107	return;	1458	return;
1108		1459
1109	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));
1110		1461
1111	ev_start (EV_A_ (W)w, 1);	1462	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1463	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1464	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1465
1115	if (!w->next)	1466	if (!((WL)w)->next)
1116	{	1467	{
		1468	#if WIN32
		1469	signal (w->signum, sighandler);
		1470	#else
1117	struct sigaction sa;	1471	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1472	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1473	sigfillset (&sa.sa_mask);
1120	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 */
1121	sigaction (w->signum, &sa, 0);	1475	sigaction (w->signum, &sa, 0);
		1476	#endif
1122	}	1477	}
1123	}	1478	}
1124		1479
1125	void	1480	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1481	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1135	if (!signals [w->signum - 1].head)	1490	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1491	signal (w->signum, SIG_DFL);
1137	}	1492	}
1138		1493
1139	void	1494	void
1140	ev_idle_start (EV_P_ struct ev_idle *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start (EV_A_ (W)w, ++idlecnt);
1146	array_needsize (idles, idlemax, idlecnt, );
1147	idles [idlecnt - 1] = w;
1148	}
1149
1150	void
1151	ev_idle_stop (EV_P_ struct ev_idle *w)
1152	{
1153	ev_clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	idles [w->active - 1] = idles [--idlecnt];
1158	ev_stop (EV_A_ (W)w);
1159	}
1160
1161	void
1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
1163	{
1164	if (ev_is_active (w))
1165	return;
1166
1167	ev_start (EV_A_ (W)w, ++preparecnt);
1168	array_needsize (prepares, preparemax, preparecnt, );
1169	prepares [preparecnt - 1] = w;
1170	}
1171
1172	void
1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1174	{
1175	ev_clear_pending (EV_A_ (W)w);
1176	if (ev_is_active (w))
1177	return;
1178
1179	prepares [w->active - 1] = prepares [--preparecnt];
1180	ev_stop (EV_A_ (W)w);
1181	}
1182
1183	void
1184	ev_check_start (EV_P_ struct ev_check *w)
1185	{
1186	if (ev_is_active (w))
1187	return;
1188
1189	ev_start (EV_A_ (W)w, ++checkcnt);
1190	array_needsize (checks, checkmax, checkcnt, );
1191	checks [checkcnt - 1] = w;
1192	}
1193
1194	void
1195	ev_check_stop (EV_P_ struct ev_check *w)
1196	{
1197	ev_clear_pending (EV_A_ (W)w);
1198	if (ev_is_active (w))
1199	return;
1200
1201	checks [w->active - 1] = checks [--checkcnt];
1202	ev_stop (EV_A_ (W)w);
1203	}
1204
1205	void
1206	ev_child_start (EV_P_ struct ev_child *w)	1495	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1496	{
		1497	#if EV_MULTIPLICITY
		1498	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1499	#endif
1208	if (ev_is_active (w))	1500	if (ev_is_active (w))
1209	return;	1501	return;
1210		1502
1211	ev_start (EV_A_ (W)w, 1);	1503	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1504	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1239	void (cb)(int revents, void arg) = once->cb;	1531	void (cb)(int revents, void arg) = once->cb;
1240	void *arg = once->arg;	1532	void *arg = once->arg;
1241		1533
1242	ev_io_stop (EV_A_ &once->io);	1534	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1535	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1536	ev_free (once);
1245		1537
1246	cb (revents, arg);	1538	cb (revents, arg);
1247	}	1539	}
1248		1540
1249	static void	1541	static void
…		…
1259	}	1551	}
1260		1552
1261	void	1553	void
1262	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)
1263	{	1555	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1556	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1265		1557
1266	if (!once)	1558	if (!once)
1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1559	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1268	else	1560	else
1269	{	1561	{
…		…
1284	ev_timer_start (EV_A_ &once->to);	1576	ev_timer_start (EV_A_ &once->to);
1285	}	1577	}
1286	}	1578	}
1287	}	1579	}
1288		1580
1289	/*****************************************************************************/
1290
1291	#if 0
1292
1293	struct ev_io wio;
1294
1295	static void
1296	sin_cb (struct ev_io *w, int revents)
1297	{
1298	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299	}
1300
1301	static void
1302	ocb (struct ev_timer *w, int revents)
1303	{
1304	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305	ev_timer_stop (w);
1306	ev_timer_start (w);
1307	}
1308
1309	static void
1310	scb (struct ev_signal *w, int revents)
1311	{
1312	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313	ev_io_stop (&wio);
1314	ev_io_start (&wio);
1315	}
1316
1317	static void
1318	gcb (struct ev_signal *w, int revents)
1319	{
1320	fprintf (stderr, "generic %x\n", revents);
1321
1322	}
1323
1324	int main (void)
1325	{
1326	ev_init (0);
1327
1328	ev_io_init (&wio, sin_cb, 0, EV_READ);
1329	ev_io_start (&wio);
1330
1331	struct ev_timer t[10000];
1332
1333	#if 0
1334	int i;
1335	for (i = 0; i < 10000; ++i)
1336	{
1337	struct ev_timer *w = t + i;
1338	ev_watcher_init (w, ocb, i);
1339	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340	ev_timer_start (w);
1341	if (drand48 () < 0.5)
1342	ev_timer_stop (w);
1343	}
1344	#endif
1345
1346	struct ev_timer t1;
1347	ev_timer_init (&t1, ocb, 5, 10);
1348	ev_timer_start (&t1);
1349
1350	struct ev_signal sig;
1351	ev_signal_init (&sig, scb, SIGQUIT);
1352	ev_signal_start (&sig);
1353
1354	struct ev_check cw;
1355	ev_check_init (&cw, gcb);
1356	ev_check_start (&cw);
1357
1358	struct ev_idle iw;
1359	ev_idle_init (&iw, gcb);
1360	ev_idle_start (&iw);
1361
1362	ev_loop (0);
1363
1364	return 0;
1365	}
1366
1367	#endif
1368
1369
1370
1371

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Comparing libev/ev.c (file contents): Revision 1.52 by root, Sat Nov 3 22:10:39 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 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.80 by root, Fri Nov 9 15:30:59 2007 UTC