[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 1.78 by root, Thu Nov 8 21:08:56 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	};
		225	# undef VAR
		226	# include "ev_wrap.h"
		227
		228	#else
		229
		230	# define VAR(name,decl) static decl;
		231	# include "ev_vars.h"
		232	# undef VAR
		233
155	#endif	234	#endif
156		235
157	/*****************************************************************************/	236	/*****************************************************************************/
158		237
159	inline ev_tstamp	238	inline ev_tstamp
…		…
189	ev_now (EV_P)	268	ev_now (EV_P)
190	{	269	{
191	return rt_now;	270	return rt_now;
192	}	271	}
193		272
194	#define array_roundsize(base,n) ((n) \| 4 & ~3)	273	#define array_roundsize(type,n) ((n) \| 4 & ~3)
195		274
196	#define array_needsize(base,cur,cnt,init) \	275	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	276	if (expect_false ((cnt) > cur)) \
198	{ \	277	{ \
199	int newcnt = cur; \	278	int newcnt = cur; \
200	do \	279	do \
201	{ \	280	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	281	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	282	} \
204	while ((cnt) > newcnt); \	283	while ((cnt) > newcnt); \
205	\	284	\
206	base = realloc (base, sizeof (base) (newcnt)); \	285	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
207	init (base + cur, newcnt - cur); \	286	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	287	cur = newcnt; \
209	}	288	}
		289
		290	#define array_slim(type,stem) \
		291	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		292	{ \
		293	stem ## max = array_roundsize (stem ## cnt >> 1); \
		294	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		295	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		296	}
		297
		298	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		299	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		300	#define array_free_microshit(stem) \
		301	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		302
		303	#define array_free(stem, idx) \
		304	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		305
211	/*****************************************************************************/	306	/*****************************************************************************/
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		307
223	static void	308	static void
224	anfds_init (ANFD *base, int count)	309	anfds_init (ANFD *base, int count)
225	{	310	{
226	while (count--)	311	while (count--)
…		…
231		316
232	++base;	317	++base;
233	}	318	}
234	}	319	}
235		320
236	typedef struct	321	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)	322	ev_feed_event (EV_P_ void *w, int revents)
247	{	323	{
		324	W w_ = (W)w;
		325
248	if (w->pending)	326	if (w_->pending)
249	{	327	{
250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	328	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
251	return;	329	return;
252	}	330	}
253		331
254	w->pending = ++pendingcnt [ABSPRI (w)];	332	w_->pending = ++pendingcnt [ABSPRI (w_)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	333	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	334	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	335	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258	}	336	}
259		337
260	static void	338	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)	339	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{	340	{
263	int i;	341	int i;
264		342
265	for (i = 0; i < eventcnt; ++i)	343	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);	344	ev_feed_event (EV_A_ events [i], type);
267	}	345	}
268		346
269	static void	347	static void
270	fd_event (EV_P_ int fd, int events)	348	fd_event (EV_P_ int fd, int events)
271	{	349	{
…		…
275	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	353	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
276	{	354	{
277	int ev = w->events & events;	355	int ev = w->events & events;
278		356
279	if (ev)	357	if (ev)
280	event (EV_A_ (W)w, ev);	358	ev_feed_event (EV_A_ (W)w, ev);
281	}	359	}
282	}	360	}
283		361
284	/*****************************************************************************/	362	/*****************************************************************************/
285
286	static int *fdchanges;
287	static int fdchangemax, fdchangecnt;
288		363
289	static void	364	static void
290	fd_reify (EV_P)	365	fd_reify (EV_P)
291	{	366	{
292	int i;	367	int i;
…		…
302	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	377	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
303	events \|= w->events;	378	events \|= w->events;
304		379
305	anfd->reify = 0;	380	anfd->reify = 0;
306		381
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	382	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	383	anfd->events = events;
311	}
312	}	384	}
313		385
314	fdchangecnt = 0;	386	fdchangecnt = 0;
315	}	387	}
316		388
317	static void	389	static void
318	fd_change (EV_P_ int fd)	390	fd_change (EV_P_ int fd)
319	{	391	{
320	if (anfds [fd].reify \|\| fdchangecnt < 0)	392	if (anfds [fd].reify)
321	return;	393	return;
322		394
323	anfds [fd].reify = 1;	395	anfds [fd].reify = 1;
324		396
325	++fdchangecnt;	397	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	398	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327	fdchanges [fdchangecnt - 1] = fd;	399	fdchanges [fdchangecnt - 1] = fd;
328	}	400	}
329		401
330	static void	402	static void
331	fd_kill (EV_P_ int fd)	403	fd_kill (EV_P_ int fd)
…		…
333	struct ev_io *w;	405	struct ev_io *w;
334		406
335	while ((w = (struct ev_io *)anfds [fd].head))	407	while ((w = (struct ev_io *)anfds [fd].head))
336	{	408	{
337	ev_io_stop (EV_A_ w);	409	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	410	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
339	}	411	}
		412	}
		413
		414	static int
		415	fd_valid (int fd)
		416	{
		417	#ifdef WIN32
		418	return !!win32_get_osfhandle (fd);
		419	#else
		420	return fcntl (fd, F_GETFD) != -1;
		421	#endif
340	}	422	}
341		423
342	/* called on EBADF to verify fds */	424	/* called on EBADF to verify fds */
343	static void	425	static void
344	fd_ebadf (EV_P)	426	fd_ebadf (EV_P)
345	{	427	{
346	int fd;	428	int fd;
347		429
348	for (fd = 0; fd < anfdmax; ++fd)	430	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	431	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	432	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	433	fd_kill (EV_A_ fd);
352	}	434	}
353		435
354	/* called on ENOMEM in select/poll to kill some fds and retry */	436	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	437	static void
356	fd_enomem (EV_P)	438	fd_enomem (EV_P)
357	{	439	{
358	int fd = anfdmax;	440	int fd;
359		441
360	while (fd--)	442	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	443	if (anfds [fd].events)
362	{	444	{
363	close (fd);
364	fd_kill (EV_A_ fd);	445	fd_kill (EV_A_ fd);
365	return;	446	return;
366	}	447	}
367	}	448	}
368		449
		450	/* usually called after fork if method needs to re-arm all fds from scratch */
		451	static void
		452	fd_rearm_all (EV_P)
		453	{
		454	int fd;
		455
		456	/* this should be highly optimised to not do anything but set a flag */
		457	for (fd = 0; fd < anfdmax; ++fd)
		458	if (anfds [fd].events)
		459	{
		460	anfds [fd].events = 0;
		461	fd_change (EV_A_ fd);
		462	}
		463	}
		464
369	/*****************************************************************************/	465	/*****************************************************************************/
370		466
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	467	static void
378	upheap (WT *timers, int k)	468	upheap (WT *heap, int k)
379	{	469	{
380	WT w = timers [k];	470	WT w = heap [k];
381		471
382	while (k && timers [k >> 1]->at > w->at)	472	while (k && heap [k >> 1]->at > w->at)
383	{	473	{
384	timers [k] = timers [k >> 1];	474	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	475	((W)heap [k])->active = k + 1;
386	k >>= 1;	476	k >>= 1;
387	}	477	}
388		478
389	timers [k] = w;	479	heap [k] = w;
390	timers [k]->active = k + 1;	480	((W)heap [k])->active = k + 1;
391		481
392	}	482	}
393		483
394	static void	484	static void
395	downheap (WT *timers, int N, int k)	485	downheap (WT *heap, int N, int k)
396	{	486	{
397	WT w = timers [k];	487	WT w = heap [k];
398		488
399	while (k < (N >> 1))	489	while (k < (N >> 1))
400	{	490	{
401	int j = k << 1;	491	int j = k << 1;
402		492
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	493	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	494	++j;
405		495
406	if (w->at <= timers [j]->at)	496	if (w->at <= heap [j]->at)
407	break;	497	break;
408		498
409	timers [k] = timers [j];	499	heap [k] = heap [j];
410	timers [k]->active = k + 1;	500	((W)heap [k])->active = k + 1;
411	k = j;	501	k = j;
412	}	502	}
413		503
414	timers [k] = w;	504	heap [k] = w;
415	timers [k]->active = k + 1;	505	((W)heap [k])->active = k + 1;
416	}	506	}
417		507
418	/*****************************************************************************/	508	/*****************************************************************************/
419		509
420	typedef struct	510	typedef struct
421	{	511	{
422	struct ev_watcher_list *head;	512	WL head;
423	sig_atomic_t volatile gotsig;	513	sig_atomic_t volatile gotsig;
424	} ANSIG;	514	} ANSIG;
425		515
426	static ANSIG *signals;	516	static ANSIG *signals;
427	static int signalmax;	517	static int signalmax;
…		…
443	}	533	}
444		534
445	static void	535	static void
446	sighandler (int signum)	536	sighandler (int signum)
447	{	537	{
		538	#if WIN32
		539	signal (signum, sighandler);
		540	#endif
		541
448	signals [signum - 1].gotsig = 1;	542	signals [signum - 1].gotsig = 1;
449		543
450	if (!gotsig)	544	if (!gotsig)
451	{	545	{
452	int old_errno = errno;	546	int old_errno = errno;
453	gotsig = 1;	547	gotsig = 1;
		548	#ifdef WIN32
		549	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		550	#else
454	write (sigpipe [1], &signum, 1);	551	write (sigpipe [1], &signum, 1);
		552	#endif
455	errno = old_errno;	553	errno = old_errno;
456	}	554	}
457	}	555	}
458		556
459	static void	557	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	558	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	559	{
462	struct ev_watcher_list *w;	560	WL w;
463	int signum;	561	int signum;
464		562
		563	#ifdef WIN32
		564	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		565	#else
465	read (sigpipe [0], &revents, 1);	566	read (sigpipe [0], &revents, 1);
		567	#endif
466	gotsig = 0;	568	gotsig = 0;
467		569
468	for (signum = signalmax; signum--; )	570	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	571	if (signals [signum].gotsig)
470	{	572	{
471	signals [signum].gotsig = 0;	573	signals [signum].gotsig = 0;
472		574
473	for (w = signals [signum].head; w; w = w->next)	575	for (w = signals [signum].head; w; w = w->next)
474	event (EV_A_ (W)w, EV_SIGNAL);	576	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
475	}	577	}
476	}	578	}
477		579
478	static void	580	static void
479	siginit (EV_P)	581	siginit (EV_P)
…		…
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	588	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	589	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif	590	#endif
489		591
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	592	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	593	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	594	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	595	}
494		596
495	/*****************************************************************************/	597	/*****************************************************************************/
496		598
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];	599	static struct ev_child *childs [PID_HASHSIZE];
		600
		601	#ifndef WIN32
		602
509	static struct ev_signal childev;	603	static struct ev_signal childev;
510
511	#ifndef WIN32
512		604
513	#ifndef WCONTINUED	605	#ifndef WCONTINUED
514	# define WCONTINUED 0	606	# define WCONTINUED 0
515	#endif	607	#endif
516		608
…		…
520	struct ev_child *w;	612	struct ev_child *w;
521		613
522	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	614	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)	615	if (w->pid == pid \|\| !w->pid)
524	{	616	{
525	w->priority = sw->priority; /* need to do it now */	617	ev_priority (w) = ev_priority (sw); /* need to do it now */
526	w->rpid = pid;	618	w->rpid = pid;
527	w->rstatus = status;	619	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	620	ev_feed_event (EV_A_ (W)w, EV_CHILD);
529	}	621	}
530	}	622	}
531		623
532	static void	624	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	625	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
535	int pid, status;	627	int pid, status;
536		628
537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	629	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
538	{	630	{
539	/* make sure we are called again until all childs have been reaped */	631	/* make sure we are called again until all childs have been reaped */
540	event (EV_A_ (W)sw, EV_SIGNAL);	632	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		633
542	child_reap (EV_A_ sw, pid, pid, status);	634	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 */	635	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
544	}	636	}
545	}	637	}
…		…
552	# include "ev_kqueue.c"	644	# include "ev_kqueue.c"
553	#endif	645	#endif
554	#if EV_USE_EPOLL	646	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	647	# include "ev_epoll.c"
556	#endif	648	#endif
557	#if EV_USEV_POLL	649	#if EV_USE_POLL
558	# include "ev_poll.c"	650	# include "ev_poll.c"
559	#endif	651	#endif
560	#if EV_USE_SELECT	652	#if EV_USE_SELECT
561	# include "ev_select.c"	653	# include "ev_select.c"
562	#endif	654	#endif
…		…
589	ev_method (EV_P)	681	ev_method (EV_P)
590	{	682	{
591	return method;	683	return method;
592	}	684	}
593		685
594	int	686	static void
595	ev_init (EV_P_ int methods)	687	loop_init (EV_P_ int methods)
596	{	688	{
597	if (!method)	689	if (!method)
598	{	690	{
599	#if EV_USE_MONOTONIC	691	#if EV_USE_MONOTONIC
600	{	692	{
…		…
605	#endif	697	#endif
606		698
607	rt_now = ev_time ();	699	rt_now = ev_time ();
608	mn_now = get_clock ();	700	mn_now = get_clock ();
609	now_floor = mn_now;	701	now_floor = mn_now;
610	diff = rt_now - mn_now;	702	rtmn_diff = rt_now - mn_now;
611
612	if (pipe (sigpipe))
613	return 0;
614		703
615	if (methods == EVMETHOD_AUTO)	704	if (methods == EVMETHOD_AUTO)
616	if (!enable_secure () && getenv ("LIBmethodS"))	705	if (!enable_secure () && getenv ("LIBEV_METHODS"))
617	methods = atoi (getenv ("LIBmethodS"));	706	methods = atoi (getenv ("LIBEV_METHODS"));
618	else	707	else
619	methods = EVMETHOD_ANY;	708	methods = EVMETHOD_ANY;
620		709
621	method = 0;	710	method = 0;
		711	#if EV_USE_WIN32
		712	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		713	#endif
622	#if EV_USE_KQUEUE	714	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	715	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
624	#endif	716	#endif
625	#if EV_USE_EPOLL	717	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	718	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
627	#endif	719	#endif
628	#if EV_USEV_POLL	720	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	721	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
630	#endif	722	#endif
631	#if EV_USE_SELECT	723	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	724	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
633	#endif	725	#endif
634		726
		727	ev_watcher_init (&sigev, sigcb);
		728	ev_set_priority (&sigev, EV_MAXPRI);
		729	}
		730	}
		731
		732	void
		733	loop_destroy (EV_P)
		734	{
		735	int i;
		736
		737	#if EV_USE_WIN32
		738	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		739	#endif
		740	#if EV_USE_KQUEUE
		741	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		742	#endif
		743	#if EV_USE_EPOLL
		744	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		745	#endif
		746	#if EV_USE_POLL
		747	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		748	#endif
		749	#if EV_USE_SELECT
		750	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		751	#endif
		752
		753	for (i = NUMPRI; i--; )
		754	array_free (pending, [i]);
		755
		756	/* have to use the microsoft-never-gets-it-right macro */
		757	array_free_microshit (fdchange);
		758	array_free_microshit (timer);
		759	array_free_microshit (periodic);
		760	array_free_microshit (idle);
		761	array_free_microshit (prepare);
		762	array_free_microshit (check);
		763
		764	method = 0;
		765	}
		766
		767	static void
		768	loop_fork (EV_P)
		769	{
		770	#if EV_USE_EPOLL
		771	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		772	#endif
		773	#if EV_USE_KQUEUE
		774	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		775	#endif
		776
		777	if (ev_is_active (&sigev))
		778	{
		779	/* default loop */
		780
		781	ev_ref (EV_A);
		782	ev_io_stop (EV_A_ &sigev);
		783	close (sigpipe [0]);
		784	close (sigpipe [1]);
		785
		786	while (pipe (sigpipe))
		787	syserr ("(libev) error creating pipe");
		788
		789	siginit (EV_A);
		790	}
		791
		792	postfork = 0;
		793	}
		794
		795	#if EV_MULTIPLICITY
		796	struct ev_loop *
		797	ev_loop_new (int methods)
		798	{
		799	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		800
		801	memset (loop, 0, sizeof (struct ev_loop));
		802
		803	loop_init (EV_A_ methods);
		804
		805	if (ev_method (EV_A))
		806	return loop;
		807
		808	return 0;
		809	}
		810
		811	void
		812	ev_loop_destroy (EV_P)
		813	{
		814	loop_destroy (EV_A);
		815	ev_free (loop);
		816	}
		817
		818	void
		819	ev_loop_fork (EV_P)
		820	{
		821	postfork = 1;
		822	}
		823
		824	#endif
		825
		826	#if EV_MULTIPLICITY
		827	struct ev_loop default_loop_struct;
		828	static struct ev_loop *default_loop;
		829
		830	struct ev_loop *
		831	#else
		832	static int default_loop;
		833
		834	int
		835	#endif
		836	ev_default_loop (int methods)
		837	{
		838	if (sigpipe [0] == sigpipe [1])
		839	if (pipe (sigpipe))
		840	return 0;
		841
		842	if (!default_loop)
		843	{
		844	#if EV_MULTIPLICITY
		845	struct ev_loop *loop = default_loop = &default_loop_struct;
		846	#else
		847	default_loop = 1;
		848	#endif
		849
		850	loop_init (EV_A_ methods);
		851
635	if (method)	852	if (ev_method (EV_A))
636	{	853	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	854	siginit (EV_A);
640		855
641	#ifndef WIN32	856	#ifndef WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	857	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	858	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	859	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	860	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	861	#endif
647	}	862	}
		863	else
		864	default_loop = 0;
648	}	865	}
649		866
650	return method;	867	return default_loop;
		868	}
		869
		870	void
		871	ev_default_destroy (void)
		872	{
		873	#if EV_MULTIPLICITY
		874	struct ev_loop *loop = default_loop;
		875	#endif
		876
		877	#ifndef WIN32
		878	ev_ref (EV_A); /* child watcher */
		879	ev_signal_stop (EV_A_ &childev);
		880	#endif
		881
		882	ev_ref (EV_A); /* signal watcher */
		883	ev_io_stop (EV_A_ &sigev);
		884
		885	close (sigpipe [0]); sigpipe [0] = 0;
		886	close (sigpipe [1]); sigpipe [1] = 0;
		887
		888	loop_destroy (EV_A);
		889	}
		890
		891	void
		892	ev_default_fork (void)
		893	{
		894	#if EV_MULTIPLICITY
		895	struct ev_loop *loop = default_loop;
		896	#endif
		897
		898	if (method)
		899	postfork = 1;
651	}	900	}
652		901
653	/*****************************************************************************/	902	/*****************************************************************************/
654		903
655	void	904	static int
656	ev_fork_prepare (void)	905	any_pending (EV_P)
657	{	906	{
658	/* nop */	907	int pri;
659	}
660		908
661	void	909	for (pri = NUMPRI; pri--; )
662	ev_fork_parent (void)	910	if (pendingcnt [pri])
663	{	911	return 1;
664	/* nop */
665	}
666		912
667	void	913	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	}	914	}
681
682	/*****************************************************************************/
683		915
684	static void	916	static void
685	call_pending (EV_P)	917	call_pending (EV_P)
686	{	918	{
687	int pri;	919	int pri;
…		…
700	}	932	}
701		933
702	static void	934	static void
703	timers_reify (EV_P)	935	timers_reify (EV_P)
704	{	936	{
705	while (timercnt && timers [0]->at <= mn_now)	937	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	938	{
707	struct ev_timer *w = timers [0];	939	struct ev_timer *w = timers [0];
		940
		941	assert (("inactive timer on timer heap detected", ev_is_active (w)));
708		942
709	/* first reschedule or stop timer */	943	/* first reschedule or stop timer */
710	if (w->repeat)	944	if (w->repeat)
711	{	945	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	946	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
713	w->at = mn_now + w->repeat;	947	((WT)w)->at = mn_now + w->repeat;
714	downheap ((WT *)timers, timercnt, 0);	948	downheap ((WT *)timers, timercnt, 0);
715	}	949	}
716	else	950	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	951	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		952
719	event ((W)w, EV_TIMEOUT);	953	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	954	}
721	}	955	}
722		956
723	static void	957	static void
724	periodics_reify (EV_P)	958	periodics_reify (EV_P)
725	{	959	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	960	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
727	{	961	{
728	struct ev_periodic *w = periodics [0];	962	struct ev_periodic *w = periodics [0];
729		963
		964	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		965
730	/* first reschedule or stop timer */	966	/* first reschedule or stop timer */
731	if (w->interval)	967	if (w->reschedule_cb)
732	{	968	{
		969	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		970
		971	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		972	downheap ((WT *)periodics, periodiccnt, 0);
		973	}
		974	else if (w->interval)
		975	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	976	((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));	977	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	978	downheap ((WT *)periodics, periodiccnt, 0);
736	}	979	}
737	else	980	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	981	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		982
740	event (EV_A_ (W)w, EV_PERIODIC);	983	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	984	}
742	}	985	}
743		986
744	static void	987	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	988	periodics_reschedule (EV_P)
746	{	989	{
747	int i;	990	int i;
748		991
749	/* adjust periodics after time jump */	992	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	993	for (i = 0; i < periodiccnt; ++i)
751	{	994	{
752	struct ev_periodic *w = periodics [i];	995	struct ev_periodic *w = periodics [i];
753		996
		997	if (w->reschedule_cb)
		998	((WT)w)->at = w->reschedule_cb (w, rt_now);
754	if (w->interval)	999	else if (w->interval)
755	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1000	((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	}	1001	}
		1002
		1003	/* now rebuild the heap */
		1004	for (i = periodiccnt >> 1; i--; )
		1005	downheap ((WT *)periodics, periodiccnt, i);
767	}	1006	}
768		1007
769	inline int	1008	inline int
770	time_update_monotonic (EV_P)	1009	time_update_monotonic (EV_P)
771	{	1010	{
772	mn_now = get_clock ();	1011	mn_now = get_clock ();
773		1012
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1013	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1014	{
776	rt_now = mn_now + diff;	1015	rt_now = rtmn_diff + mn_now;
777	return 0;	1016	return 0;
778	}	1017	}
779	else	1018	else
780	{	1019	{
781	now_floor = mn_now;	1020	now_floor = mn_now;
…		…
792	#if EV_USE_MONOTONIC	1031	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1032	if (expect_true (have_monotonic))
794	{	1033	{
795	if (time_update_monotonic (EV_A))	1034	if (time_update_monotonic (EV_A))
796	{	1035	{
797	ev_tstamp odiff = diff;	1036	ev_tstamp odiff = rtmn_diff;
798		1037
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1038	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{	1039	{
801	diff = rt_now - mn_now;	1040	rtmn_diff = rt_now - mn_now;
802		1041
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1042	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1043	return; /* all is well */
805		1044
806	rt_now = ev_time ();	1045	rt_now = ev_time ();
807	mn_now = get_clock ();	1046	mn_now = get_clock ();
808	now_floor = mn_now;	1047	now_floor = mn_now;
809	}	1048	}
810		1049
811	periodics_reschedule (EV_A_ diff - odiff);	1050	periodics_reschedule (EV_A);
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1051	/* no timer adjustment, as the monotonic clock doesn't jump */
		1052	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1053	}
814	}	1054	}
815	else	1055	else
816	#endif	1056	#endif
817	{	1057	{
818	rt_now = ev_time ();	1058	rt_now = ev_time ();
819		1059
820	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1060	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1061	{
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1062	periodics_reschedule (EV_A);
823		1063
824	/* adjust timers. this is easy, as the offset is the same for all */	1064	/* adjust timers. this is easy, as the offset is the same for all */
825	for (i = 0; i < timercnt; ++i)	1065	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1066	((WT)timers [i])->at += rt_now - mn_now;
827	}	1067	}
828		1068
829	mn_now = rt_now;	1069	mn_now = rt_now;
830	}	1070	}
831	}	1071	}
…		…
857	{	1097	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1098	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1099	call_pending (EV_A);
860	}	1100	}
861		1101
		1102	/* we might have forked, so reify kernel state if necessary */
		1103	if (expect_false (postfork))
		1104	loop_fork (EV_A);
		1105
862	/* update fd-related kernel structures */	1106	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1107	fd_reify (EV_A);
864		1108
865	/* calculate blocking time */	1109	/* calculate blocking time */
866		1110
867	/* we only need this for !monotonic clockor timers, but as we basically	1111	/* we only need this for !monotonic clock or timers, but as we basically
868	always have timers, we just calculate it always */	1112	always have timers, we just calculate it always */
869	#if EV_USE_MONOTONIC	1113	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1114	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1115	time_update_monotonic (EV_A);
872	else	1116	else
…		…
882	{	1126	{
883	block = MAX_BLOCKTIME;	1127	block = MAX_BLOCKTIME;
884		1128
885	if (timercnt)	1129	if (timercnt)
886	{	1130	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1131	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888	if (block > to) block = to;	1132	if (block > to) block = to;
889	}	1133	}
890		1134
891	if (periodiccnt)	1135	if (periodiccnt)
892	{	1136	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1137	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
894	if (block > to) block = to;	1138	if (block > to) block = to;
895	}	1139	}
896		1140
897	if (block < 0.) block = 0.;	1141	if (block < 0.) block = 0.;
898	}	1142	}
…		…
905	/* queue pending timers and reschedule them */	1149	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1150	timers_reify (EV_A); /* relative timers called last */
907	periodics_reify (EV_A); /* absolute timers called first */	1151	periodics_reify (EV_A); /* absolute timers called first */
908		1152
909	/* queue idle watchers unless io or timers are pending */	1153	/* queue idle watchers unless io or timers are pending */
910	if (!pendingcnt)	1154	if (idlecnt && !any_pending (EV_A))
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1155	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912		1156
913	/* queue check watchers, to be executed first */	1157	/* queue check watchers, to be executed first */
914	if (checkcnt)	1158	if (checkcnt)
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1159	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
990	return;	1234	return;
991		1235
992	assert (("ev_io_start called with negative fd", fd >= 0));	1236	assert (("ev_io_start called with negative fd", fd >= 0));
993		1237
994	ev_start (EV_A_ (W)w, 1);	1238	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1239	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1240	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1241
998	fd_change (EV_A_ fd);	1242	fd_change (EV_A_ fd);
999	}	1243	}
1000		1244
…		…
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1259	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1260	{
1017	if (ev_is_active (w))	1261	if (ev_is_active (w))
1018	return;	1262	return;
1019		1263
1020	w->at += mn_now;	1264	((WT)w)->at += mn_now;
1021		1265
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1266	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1267
1024	ev_start (EV_A_ (W)w, ++timercnt);	1268	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1269	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1026	timers [timercnt - 1] = w;	1270	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1271	upheap ((WT *)timers, timercnt - 1);
		1272
		1273	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1274	}
1029		1275
1030	void	1276	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1277	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1278	{
1033	ev_clear_pending (EV_A_ (W)w);	1279	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1280	if (!ev_is_active (w))
1035	return;	1281	return;
1036		1282
		1283	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1284
1037	if (w->active < timercnt--)	1285	if (((W)w)->active < timercnt--)
1038	{	1286	{
1039	timers [w->active - 1] = timers [timercnt];	1287	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1288	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1289	}
1042		1290
1043	w->at = w->repeat;	1291	((WT)w)->at = w->repeat;
1044		1292
1045	ev_stop (EV_A_ (W)w);	1293	ev_stop (EV_A_ (W)w);
1046	}	1294	}
1047		1295
1048	void	1296	void
…		…
1050	{	1298	{
1051	if (ev_is_active (w))	1299	if (ev_is_active (w))
1052	{	1300	{
1053	if (w->repeat)	1301	if (w->repeat)
1054	{	1302	{
1055	w->at = mn_now + w->repeat;	1303	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1304	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1305	}
1058	else	1306	else
1059	ev_timer_stop (EV_A_ w);	1307	ev_timer_stop (EV_A_ w);
1060	}	1308	}
1061	else if (w->repeat)	1309	else if (w->repeat)
…		…
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1314	ev_periodic_start (EV_P_ struct ev_periodic *w)
1067	{	1315	{
1068	if (ev_is_active (w))	1316	if (ev_is_active (w))
1069	return;	1317	return;
1070		1318
		1319	if (w->reschedule_cb)
		1320	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1321	else if (w->interval)
		1322	{
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1323	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 */	1324	/* 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;	1325	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1326	}
1076		1327
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1328	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1329	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1079	periodics [periodiccnt - 1] = w;	1330	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1331	upheap ((WT *)periodics, periodiccnt - 1);
		1332
		1333	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1334	}
1082		1335
1083	void	1336	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1337	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1338	{
1086	ev_clear_pending (EV_A_ (W)w);	1339	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1340	if (!ev_is_active (w))
1088	return;	1341	return;
1089		1342
		1343	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1344
1090	if (w->active < periodiccnt--)	1345	if (((W)w)->active < periodiccnt--)
1091	{	1346	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1347	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1348	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1349	}
1095		1350
		1351	ev_stop (EV_A_ (W)w);
		1352	}
		1353
		1354	void
		1355	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1356	{
		1357	ev_periodic_stop (EV_A_ w);
		1358	ev_periodic_start (EV_A_ w);
		1359	}
		1360
		1361	void
		1362	ev_idle_start (EV_P_ struct ev_idle *w)
		1363	{
		1364	if (ev_is_active (w))
		1365	return;
		1366
		1367	ev_start (EV_A_ (W)w, ++idlecnt);
		1368	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1369	idles [idlecnt - 1] = w;
		1370	}
		1371
		1372	void
		1373	ev_idle_stop (EV_P_ struct ev_idle *w)
		1374	{
		1375	ev_clear_pending (EV_A_ (W)w);
		1376	if (ev_is_active (w))
		1377	return;
		1378
		1379	idles [((W)w)->active - 1] = idles [--idlecnt];
		1380	ev_stop (EV_A_ (W)w);
		1381	}
		1382
		1383	void
		1384	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1385	{
		1386	if (ev_is_active (w))
		1387	return;
		1388
		1389	ev_start (EV_A_ (W)w, ++preparecnt);
		1390	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1391	prepares [preparecnt - 1] = w;
		1392	}
		1393
		1394	void
		1395	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1396	{
		1397	ev_clear_pending (EV_A_ (W)w);
		1398	if (ev_is_active (w))
		1399	return;
		1400
		1401	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1402	ev_stop (EV_A_ (W)w);
		1403	}
		1404
		1405	void
		1406	ev_check_start (EV_P_ struct ev_check *w)
		1407	{
		1408	if (ev_is_active (w))
		1409	return;
		1410
		1411	ev_start (EV_A_ (W)w, ++checkcnt);
		1412	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1413	checks [checkcnt - 1] = w;
		1414	}
		1415
		1416	void
		1417	ev_check_stop (EV_P_ struct ev_check *w)
		1418	{
		1419	ev_clear_pending (EV_A_ (W)w);
		1420	if (ev_is_active (w))
		1421	return;
		1422
		1423	checks [((W)w)->active - 1] = checks [--checkcnt];
1096	ev_stop (EV_A_ (W)w);	1424	ev_stop (EV_A_ (W)w);
1097	}	1425	}
1098		1426
1099	#ifndef SA_RESTART	1427	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1428	# define SA_RESTART 0
1101	#endif	1429	#endif
1102		1430
1103	void	1431	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1432	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1433	{
		1434	#if EV_MULTIPLICITY
		1435	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1436	#endif
1106	if (ev_is_active (w))	1437	if (ev_is_active (w))
1107	return;	1438	return;
1108		1439
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1440	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1441
1111	ev_start (EV_A_ (W)w, 1);	1442	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1443	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1444	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1445
1115	if (!w->next)	1446	if (!((WL)w)->next)
1116	{	1447	{
		1448	#if WIN32
		1449	signal (w->signum, sighandler);
		1450	#else
1117	struct sigaction sa;	1451	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1452	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1453	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1454	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1455	sigaction (w->signum, &sa, 0);
		1456	#endif
1122	}	1457	}
1123	}	1458	}
1124		1459
1125	void	1460	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1461	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1135	if (!signals [w->signum - 1].head)	1470	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1471	signal (w->signum, SIG_DFL);
1137	}	1472	}
1138		1473
1139	void	1474	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)	1475	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1476	{
		1477	#if EV_MULTIPLICITY
		1478	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1479	#endif
1208	if (ev_is_active (w))	1480	if (ev_is_active (w))
1209	return;	1481	return;
1210		1482
1211	ev_start (EV_A_ (W)w, 1);	1483	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1484	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1239	void (cb)(int revents, void arg) = once->cb;	1511	void (cb)(int revents, void arg) = once->cb;
1240	void *arg = once->arg;	1512	void *arg = once->arg;
1241		1513
1242	ev_io_stop (EV_A_ &once->io);	1514	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1515	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1516	ev_free (once);
1245		1517
1246	cb (revents, arg);	1518	cb (revents, arg);
1247	}	1519	}
1248		1520
1249	static void	1521	static void
…		…
1259	}	1531	}
1260		1532
1261	void	1533	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1534	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1263	{	1535	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1536	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1265		1537
1266	if (!once)	1538	if (!once)
1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1539	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1268	else	1540	else
1269	{	1541	{
…		…
1284	ev_timer_start (EV_A_ &once->to);	1556	ev_timer_start (EV_A_ &once->to);
1285	}	1557	}
1286	}	1558	}
1287	}	1559	}
1288		1560
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 1.78 by root, Thu Nov 8 21:08:56 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 1.78 by root, Thu Nov 8 21:08:56 2007 UTC