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

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.84 by root, Fri Nov 9 23:04:35 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
…		…
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	126	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
94	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	127	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
95	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	128	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
96	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	129	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		130
		131	#ifdef EV_H
		132	# include EV_H
		133	#else
98	#include "ev.h"	134	# include "ev.h"
		135	#endif
99		136
100	#if __GNUC__ >= 3	137	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	138	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	139	# define inline inline
103	#else	140	#else
…		…
115	typedef struct ev_watcher_list *WL;	152	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	153	typedef struct ev_watcher_time *WT;
117		154
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		156
		157	#include "ev_win32.c"
		158
120	/*****************************************************************************/	159	/*****************************************************************************/
121		160
		161	static void (syserr_cb)(const char msg);
		162
		163	void ev_set_syserr_cb (void (cb)(const char msg))
		164	{
		165	syserr_cb = cb;
		166	}
		167
		168	static void
		169	syserr (const char *msg)
		170	{
		171	if (!msg)
		172	msg = "(libev) system error";
		173
		174	if (syserr_cb)
		175	syserr_cb (msg);
		176	else
		177	{
		178	perror (msg);
		179	abort ();
		180	}
		181	}
		182
		183	static void (alloc)(void *ptr, long size);
		184
		185	void ev_set_allocator (void (cb)(void *ptr, long size))
		186	{
		187	alloc = cb;
		188	}
		189
		190	static void *
		191	ev_realloc (void *ptr, long size)
		192	{
		193	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		194
		195	if (!ptr && size)
		196	{
		197	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		198	abort ();
		199	}
		200
		201	return ptr;
		202	}
		203
		204	#define ev_malloc(size) ev_realloc (0, (size))
		205	#define ev_free(ptr) ev_realloc ((ptr), 0)
		206
		207	/*****************************************************************************/
		208
122	typedef struct	209	typedef struct
123	{	210	{
124	struct ev_watcher_list *head;	211	WL head;
125	unsigned char events;	212	unsigned char events;
126	unsigned char reify;	213	unsigned char reify;
127	} ANFD;	214	} ANFD;
128		215
129	typedef struct	216	typedef struct
130	{	217	{
131	W w;	218	W w;
132	int events;	219	int events;
133	} ANPENDING;	220	} ANPENDING;
134		221
135	#ifdef EV_MULTIPLICITY	222	#if EV_MULTIPLICITY
136		223
137	struct ev_loop	224	struct ev_loop
138	{	225	{
139	# define VAR(name,decl) decl;	226	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	227	#include "ev_vars.h"
141	};
142	# undef VAR	228	#undef VAR
		229	};
143	# include "ev_wrap.h"	230	#include "ev_wrap.h"
		231
		232	struct ev_loop default_loop_struct;
		233	static struct ev_loop *default_loop;
144		234
145	#else	235	#else
146		236
147	# define VAR(name,decl) static decl;	237	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	238	#include "ev_vars.h"
149	# undef VAR	239	#undef VAR
		240
		241	static int default_loop;
150		242
151	#endif	243	#endif
152		244
153	/*****************************************************************************/	245	/*****************************************************************************/
154		246
…		…
185	ev_now (EV_P)	277	ev_now (EV_P)
186	{	278	{
187	return rt_now;	279	return rt_now;
188	}	280	}
189		281
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	282	#define array_roundsize(type,n) ((n) \| 4 & ~3)
191		283
192	#define array_needsize(base,cur,cnt,init) \	284	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	285	if (expect_false ((cnt) > cur)) \
194	{ \	286	{ \
195	int newcnt = cur; \	287	int newcnt = cur; \
196	do \	288	do \
197	{ \	289	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	290	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	291	} \
200	while ((cnt) > newcnt); \	292	while ((cnt) > newcnt); \
201	\	293	\
202	base = realloc (base, sizeof (base) (newcnt)); \	294	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	295	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	296	cur = newcnt; \
205	}	297	}
		298
		299	#define array_slim(type,stem) \
		300	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		301	{ \
		302	stem ## max = array_roundsize (stem ## cnt >> 1); \
		303	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		304	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		305	}
		306
		307	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		308	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		309	#define array_free_microshit(stem) \
		310	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		311
		312	#define array_free(stem, idx) \
		313	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		314
207	/*****************************************************************************/	315	/*****************************************************************************/
208		316
209	static void	317	static void
210	anfds_init (ANFD *base, int count)	318	anfds_init (ANFD *base, int count)
…		…
217		325
218	++base;	326	++base;
219	}	327	}
220	}	328	}
221		329
222	static void	330	void
223	event (EV_P_ W w, int events)	331	ev_feed_event (EV_P_ void *w, int revents)
224	{	332	{
		333	W w_ = (W)w;
		334
225	if (w->pending)	335	if (w_->pending)
226	{	336	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	337	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	338	return;
229	}	339	}
230		340
231	w->pending = ++pendingcnt [ABSPRI (w)];	341	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	342	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	345	}
236		346
237	static void	347	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	348	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	349	{
240	int i;	350	int i;
241		351
242	for (i = 0; i < eventcnt; ++i)	352	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	353	ev_feed_event (EV_A_ events [i], type);
244	}	354	}
245		355
246	static void	356	inline void
247	fd_event (EV_P_ int fd, int events)	357	fd_event (EV_P_ int fd, int revents)
248	{	358	{
249	ANFD *anfd = anfds + fd;	359	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	360	struct ev_io *w;
251		361
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	362	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	363	{
254	int ev = w->events & events;	364	int ev = w->events & revents;
255		365
256	if (ev)	366	if (ev)
257	event (EV_A_ (W)w, ev);	367	ev_feed_event (EV_A_ (W)w, ev);
258	}	368	}
		369	}
		370
		371	void
		372	ev_feed_fd_event (EV_P_ int fd, int revents)
		373	{
		374	fd_event (EV_A_ fd, revents);
259	}	375	}
260		376
261	/*****************************************************************************/	377	/*****************************************************************************/
262		378
263	static void	379	static void
…		…
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	392	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	393	events \|= w->events;
278		394
279	anfd->reify = 0;	395	anfd->reify = 0;
280		396
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	397	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	398	anfd->events = events;
285	}
286	}	399	}
287		400
288	fdchangecnt = 0;	401	fdchangecnt = 0;
289	}	402	}
290		403
291	static void	404	static void
292	fd_change (EV_P_ int fd)	405	fd_change (EV_P_ int fd)
293	{	406	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	407	if (anfds [fd].reify)
295	return;	408	return;
296		409
297	anfds [fd].reify = 1;	410	anfds [fd].reify = 1;
298		411
299	++fdchangecnt;	412	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
301	fdchanges [fdchangecnt - 1] = fd;	414	fdchanges [fdchangecnt - 1] = fd;
302	}	415	}
303		416
304	static void	417	static void
305	fd_kill (EV_P_ int fd)	418	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	420	struct ev_io *w;
308		421
309	while ((w = (struct ev_io *)anfds [fd].head))	422	while ((w = (struct ev_io *)anfds [fd].head))
310	{	423	{
311	ev_io_stop (EV_A_ w);	424	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	425	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	426	}
		427	}
		428
		429	static int
		430	fd_valid (int fd)
		431	{
		432	#ifdef WIN32
		433	return !!win32_get_osfhandle (fd);
		434	#else
		435	return fcntl (fd, F_GETFD) != -1;
		436	#endif
314	}	437	}
315		438
316	/* called on EBADF to verify fds */	439	/* called on EBADF to verify fds */
317	static void	440	static void
318	fd_ebadf (EV_P)	441	fd_ebadf (EV_P)
319	{	442	{
320	int fd;	443	int fd;
321		444
322	for (fd = 0; fd < anfdmax; ++fd)	445	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	446	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	447	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	448	fd_kill (EV_A_ fd);
326	}	449	}
327		450
328	/* called on ENOMEM in select/poll to kill some fds and retry */	451	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	452	static void
330	fd_enomem (EV_P)	453	fd_enomem (EV_P)
331	{	454	{
332	int fd = anfdmax;	455	int fd;
333		456
334	while (fd--)	457	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	458	if (anfds [fd].events)
336	{	459	{
337	close (fd);
338	fd_kill (EV_A_ fd);	460	fd_kill (EV_A_ fd);
339	return;	461	return;
340	}	462	}
341	}	463	}
342		464
		465	/* usually called after fork if method needs to re-arm all fds from scratch */
		466	static void
		467	fd_rearm_all (EV_P)
		468	{
		469	int fd;
		470
		471	/* this should be highly optimised to not do anything but set a flag */
		472	for (fd = 0; fd < anfdmax; ++fd)
		473	if (anfds [fd].events)
		474	{
		475	anfds [fd].events = 0;
		476	fd_change (EV_A_ fd);
		477	}
		478	}
		479
343	/*****************************************************************************/	480	/*****************************************************************************/
344		481
345	static void	482	static void
346	upheap (WT *heap, int k)	483	upheap (WT *heap, int k)
347	{	484	{
348	WT w = heap [k];	485	WT w = heap [k];
349		486
350	while (k && heap [k >> 1]->at > w->at)	487	while (k && heap [k >> 1]->at > w->at)
351	{	488	{
352	heap [k] = heap [k >> 1];	489	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	490	((W)heap [k])->active = k + 1;
354	k >>= 1;	491	k >>= 1;
355	}	492	}
356		493
357	heap [k] = w;	494	heap [k] = w;
358	heap [k]->active = k + 1;	495	((W)heap [k])->active = k + 1;
359		496
360	}	497	}
361		498
362	static void	499	static void
363	downheap (WT *heap, int N, int k)	500	downheap (WT *heap, int N, int k)
…		…
373		510
374	if (w->at <= heap [j]->at)	511	if (w->at <= heap [j]->at)
375	break;	512	break;
376		513
377	heap [k] = heap [j];	514	heap [k] = heap [j];
378	heap [k]->active = k + 1;	515	((W)heap [k])->active = k + 1;
379	k = j;	516	k = j;
380	}	517	}
381		518
382	heap [k] = w;	519	heap [k] = w;
383	heap [k]->active = k + 1;	520	((W)heap [k])->active = k + 1;
		521	}
		522
		523	inline void
		524	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		525	{
		526	ev_tstamp old_at = heap [k]->at;
		527	heap [k]->at = at;
		528
		529	if (old_at < at)
		530	downheap (heap, N, k);
		531	else
		532	upheap (heap, k);
384	}	533	}
385		534
386	/*****************************************************************************/	535	/*****************************************************************************/
387		536
388	typedef struct	537	typedef struct
389	{	538	{
390	struct ev_watcher_list *head;	539	WL head;
391	sig_atomic_t volatile gotsig;	540	sig_atomic_t volatile gotsig;
392	} ANSIG;	541	} ANSIG;
393		542
394	static ANSIG *signals;	543	static ANSIG *signals;
395	static int signalmax;	544	static int signalmax;
396		545
397	static int sigpipe [2];	546	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	547	static sig_atomic_t volatile gotsig;
		548	static struct ev_io sigev;
399		549
400	static void	550	static void
401	signals_init (ANSIG *base, int count)	551	signals_init (ANSIG *base, int count)
402	{	552	{
403	while (count--)	553	while (count--)
…		…
410	}	560	}
411		561
412	static void	562	static void
413	sighandler (int signum)	563	sighandler (int signum)
414	{	564	{
		565	#if WIN32
		566	signal (signum, sighandler);
		567	#endif
		568
415	signals [signum - 1].gotsig = 1;	569	signals [signum - 1].gotsig = 1;
416		570
417	if (!gotsig)	571	if (!gotsig)
418	{	572	{
419	int old_errno = errno;	573	int old_errno = errno;
420	gotsig = 1;	574	gotsig = 1;
		575	#ifdef WIN32
		576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		577	#else
421	write (sigpipe [1], &signum, 1);	578	write (sigpipe [1], &signum, 1);
		579	#endif
422	errno = old_errno;	580	errno = old_errno;
423	}	581	}
424	}	582	}
425		583
		584	void
		585	ev_feed_signal_event (EV_P_ int signum)
		586	{
		587	WL w;
		588
		589	#if EV_MULTIPLICITY
		590	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		591	#endif
		592
		593	--signum;
		594
		595	if (signum < 0 \|\| signum >= signalmax)
		596	return;
		597
		598	signals [signum].gotsig = 0;
		599
		600	for (w = signals [signum].head; w; w = w->next)
		601	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		602	}
		603
426	static void	604	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	605	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	606	{
429	struct ev_watcher_list *w;
430	int signum;	607	int signum;
431		608
		609	#ifdef WIN32
		610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		611	#else
432	read (sigpipe [0], &revents, 1);	612	read (sigpipe [0], &revents, 1);
		613	#endif
433	gotsig = 0;	614	gotsig = 0;
434		615
435	for (signum = signalmax; signum--; )	616	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	617	if (signals [signum].gotsig)
437	{	618	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;
439
440	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}	619	}
444		620
445	static void	621	static void
446	siginit (EV_P)	622	siginit (EV_P)
447	{	623	{
…		…
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	635	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	636	}
461		637
462	/*****************************************************************************/	638	/*****************************************************************************/
463		639
		640	static struct ev_child *childs [PID_HASHSIZE];
		641
464	#ifndef WIN32	642	#ifndef WIN32
		643
		644	static struct ev_signal childev;
465		645
466	#ifndef WCONTINUED	646	#ifndef WCONTINUED
467	# define WCONTINUED 0	647	# define WCONTINUED 0
468	#endif	648	#endif
469		649
…		…
473	struct ev_child *w;	653	struct ev_child *w;
474		654
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	655	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)	656	if (w->pid == pid \|\| !w->pid)
477	{	657	{
478	w->priority = sw->priority; /* need to do it now */	658	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	659	w->rpid = pid;
480	w->rstatus = status;	660	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	661	ev_feed_event (EV_A_ (W)w, EV_CHILD);
482	}	662	}
483	}	663	}
484		664
485	static void	665	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	666	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
488	int pid, status;	668	int pid, status;
489		669
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	670	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	671	{
492	/* make sure we are called again until all childs have been reaped */	672	/* make sure we are called again until all childs have been reaped */
493	event (EV_A_ (W)sw, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		674
495	child_reap (EV_A_ sw, pid, pid, status);	675	child_reap (EV_A_ sw, pid, pid, status);
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	676	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
497	}	677	}
498	}	678	}
…		…
505	# include "ev_kqueue.c"	685	# include "ev_kqueue.c"
506	#endif	686	#endif
507	#if EV_USE_EPOLL	687	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	688	# include "ev_epoll.c"
509	#endif	689	#endif
510	#if EV_USEV_POLL	690	#if EV_USE_POLL
511	# include "ev_poll.c"	691	# include "ev_poll.c"
512	#endif	692	#endif
513	#if EV_USE_SELECT	693	#if EV_USE_SELECT
514	# include "ev_select.c"	694	# include "ev_select.c"
515	#endif	695	#endif
…		…
560	rt_now = ev_time ();	740	rt_now = ev_time ();
561	mn_now = get_clock ();	741	mn_now = get_clock ();
562	now_floor = mn_now;	742	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	743	rtmn_diff = rt_now - mn_now;
564		744
565	if (pipe (sigpipe))
566	return 0;
567
568	if (methods == EVMETHOD_AUTO)	745	if (methods == EVMETHOD_AUTO)
569	if (!enable_secure () && getenv ("LIBmethodS"))	746	if (!enable_secure () && getenv ("LIBEV_METHODS"))
570	methods = atoi (getenv ("LIBmethodS"));	747	methods = atoi (getenv ("LIBEV_METHODS"));
571	else	748	else
572	methods = EVMETHOD_ANY;	749	methods = EVMETHOD_ANY;
573		750
574	method = 0;	751	method = 0;
		752	#if EV_USE_WIN32
		753	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		754	#endif
575	#if EV_USE_KQUEUE	755	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577	#endif	757	#endif
578	#if EV_USE_EPOLL	758	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580	#endif	760	#endif
581	#if EV_USEV_POLL	761	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583	#endif	763	#endif
584	#if EV_USE_SELECT	764	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586	#endif	766	#endif
587		767
		768	ev_init (&sigev, sigcb);
		769	ev_set_priority (&sigev, EV_MAXPRI);
		770	}
		771	}
		772
		773	void
		774	loop_destroy (EV_P)
		775	{
		776	int i;
		777
		778	#if EV_USE_WIN32
		779	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		780	#endif
		781	#if EV_USE_KQUEUE
		782	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		783	#endif
		784	#if EV_USE_EPOLL
		785	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		786	#endif
		787	#if EV_USE_POLL
		788	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		789	#endif
		790	#if EV_USE_SELECT
		791	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		792	#endif
		793
		794	for (i = NUMPRI; i--; )
		795	array_free (pending, [i]);
		796
		797	/* have to use the microsoft-never-gets-it-right macro */
		798	array_free_microshit (fdchange);
		799	array_free_microshit (timer);
		800	array_free_microshit (periodic);
		801	array_free_microshit (idle);
		802	array_free_microshit (prepare);
		803	array_free_microshit (check);
		804
		805	method = 0;
		806	}
		807
		808	static void
		809	loop_fork (EV_P)
		810	{
		811	#if EV_USE_EPOLL
		812	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		813	#endif
		814	#if EV_USE_KQUEUE
		815	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		816	#endif
		817
		818	if (ev_is_active (&sigev))
		819	{
		820	/* default loop */
		821
		822	ev_ref (EV_A);
		823	ev_io_stop (EV_A_ &sigev);
		824	close (sigpipe [0]);
		825	close (sigpipe [1]);
		826
		827	while (pipe (sigpipe))
		828	syserr ("(libev) error creating pipe");
		829
		830	siginit (EV_A);
		831	}
		832
		833	postfork = 0;
		834	}
		835
		836	#if EV_MULTIPLICITY
		837	struct ev_loop *
		838	ev_loop_new (int methods)
		839	{
		840	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		841
		842	memset (loop, 0, sizeof (struct ev_loop));
		843
		844	loop_init (EV_A_ methods);
		845
		846	if (ev_method (EV_A))
		847	return loop;
		848
		849	return 0;
		850	}
		851
		852	void
		853	ev_loop_destroy (EV_P)
		854	{
		855	loop_destroy (EV_A);
		856	ev_free (loop);
		857	}
		858
		859	void
		860	ev_loop_fork (EV_P)
		861	{
		862	postfork = 1;
		863	}
		864
		865	#endif
		866
		867	#if EV_MULTIPLICITY
		868	struct ev_loop *
		869	#else
		870	int
		871	#endif
		872	ev_default_loop (int methods)
		873	{
		874	if (sigpipe [0] == sigpipe [1])
		875	if (pipe (sigpipe))
		876	return 0;
		877
		878	if (!default_loop)
		879	{
		880	#if EV_MULTIPLICITY
		881	struct ev_loop *loop = default_loop = &default_loop_struct;
		882	#else
		883	default_loop = 1;
		884	#endif
		885
		886	loop_init (EV_A_ methods);
		887
588	if (method)	888	if (ev_method (EV_A))
589	{	889	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	890	siginit (EV_A);
593		891
594	#ifndef WIN32	892	#ifndef WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	893	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	894	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	895	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	896	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	897	#endif
600	}	898	}
		899	else
		900	default_loop = 0;
601	}	901	}
602		902
603	return method;	903	return default_loop;
604	}	904	}
605		905
		906	void
		907	ev_default_destroy (void)
		908	{
606	#ifdef EV_MULTIPLICITY	909	#if EV_MULTIPLICITY
607		910	struct ev_loop *loop = default_loop;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/TODO/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	911	#endif
		912
		913	#ifndef WIN32
		914	ev_ref (EV_A); /* child watcher */
		915	ev_signal_stop (EV_A_ &childev);
		916	#endif
		917
		918	ev_ref (EV_A); /* signal watcher */
		919	ev_io_stop (EV_A_ &sigev);
		920
		921	close (sigpipe [0]); sigpipe [0] = 0;
		922	close (sigpipe [1]); sigpipe [1] = 0;
		923
		924	loop_destroy (EV_A);
		925	}
		926
		927	void
		928	ev_default_fork (void)
		929	{
		930	#if EV_MULTIPLICITY
		931	struct ev_loop *loop = default_loop;
		932	#endif
		933
		934	if (method)
		935	postfork = 1;
		936	}
634		937
635	/*****************************************************************************/	938	/*****************************************************************************/
636		939
637	void	940	static int
638	ev_fork_prepare (void)	941	any_pending (EV_P)
639	{	942	{
640	/* nop */	943	int pri;
641	}
642		944
643	void	945	for (pri = NUMPRI; pri--; )
644	ev_fork_parent (void)	946	if (pendingcnt [pri])
645	{	947	return 1;
646	/* nop */
647	}
648		948
649	void	949	return 0;
650	ev_fork_child (void)
651	{
652	/TODO/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}	950	}
666
667	/*****************************************************************************/
668		951
669	static void	952	static void
670	call_pending (EV_P)	953	call_pending (EV_P)
671	{	954	{
672	int pri;	955	int pri;
…		…
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		961
679	if (p->w)	962	if (p->w)
680	{	963	{
681	p->w->pending = 0;	964	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	965	EV_CB_INVOKE (p->w, p->events);
683	}	966	}
684	}	967	}
685	}	968	}
686		969
687	static void	970	static void
688	timers_reify (EV_P)	971	timers_reify (EV_P)
689	{	972	{
690	while (timercnt && timers [0]->at <= mn_now)	973	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	974	{
692	struct ev_timer *w = timers [0];	975	struct ev_timer *w = timers [0];
		976
		977	assert (("inactive timer on timer heap detected", ev_is_active (w)));
693		978
694	/* first reschedule or stop timer */	979	/* first reschedule or stop timer */
695	if (w->repeat)	980	if (w->repeat)
696	{	981	{
697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	982	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
698	w->at = mn_now + w->repeat;	983	((WT)w)->at = mn_now + w->repeat;
699	downheap ((WT *)timers, timercnt, 0);	984	downheap ((WT *)timers, timercnt, 0);
700	}	985	}
701	else	986	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		988
704	event (EV_A_ (W)w, EV_TIMEOUT);	989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	990	}
706	}	991	}
707		992
708	static void	993	static void
709	periodics_reify (EV_P)	994	periodics_reify (EV_P)
710	{	995	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
712	{	997	{
713	struct ev_periodic *w = periodics [0];	998	struct ev_periodic *w = periodics [0];
714		999
		1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1001
715	/* first reschedule or stop timer */	1002	/* first reschedule or stop timer */
716	if (w->interval)	1003	if (w->reschedule_cb)
717	{	1004	{
		1005	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		1006
		1007	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		1008	downheap ((WT *)periodics, periodiccnt, 0);
		1009	}
		1010	else if (w->interval)
		1011	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1012	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1013	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	1014	downheap ((WT *)periodics, periodiccnt, 0);
721	}	1015	}
722	else	1016	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1018
725	event (EV_A_ (W)w, EV_PERIODIC);	1019	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1020	}
727	}	1021	}
728		1022
729	static void	1023	static void
730	periodics_reschedule (EV_P)	1024	periodics_reschedule (EV_P)
…		…
734	/* adjust periodics after time jump */	1028	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1029	for (i = 0; i < periodiccnt; ++i)
736	{	1030	{
737	struct ev_periodic *w = periodics [i];	1031	struct ev_periodic *w = periodics [i];
738		1032
		1033	if (w->reschedule_cb)
		1034	((WT)w)->at = w->reschedule_cb (w, rt_now);
739	if (w->interval)	1035	else if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1036	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
742
743	if (fabs (diff) >= 1e-4)
744	{
745	ev_periodic_stop (EV_A_ w);
746	ev_periodic_start (EV_A_ w);
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}
750	}
751	}	1037	}
		1038
		1039	/* now rebuild the heap */
		1040	for (i = periodiccnt >> 1; i--; )
		1041	downheap ((WT *)periodics, periodiccnt, i);
752	}	1042	}
753		1043
754	inline int	1044	inline int
755	time_update_monotonic (EV_P)	1045	time_update_monotonic (EV_P)
756	{	1046	{
…		…
807	{	1097	{
808	periodics_reschedule (EV_A);	1098	periodics_reschedule (EV_A);
809		1099
810	/* adjust timers. this is easy, as the offset is the same for all */	1100	/* adjust timers. this is easy, as the offset is the same for all */
811	for (i = 0; i < timercnt; ++i)	1101	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1102	((WT)timers [i])->at += rt_now - mn_now;
813	}	1103	}
814		1104
815	mn_now = rt_now;	1105	mn_now = rt_now;
816	}	1106	}
817	}	1107	}
…		…
843	{	1133	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1135	call_pending (EV_A);
846	}	1136	}
847		1137
		1138	/* we might have forked, so reify kernel state if necessary */
		1139	if (expect_false (postfork))
		1140	loop_fork (EV_A);
		1141
848	/* update fd-related kernel structures */	1142	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1143	fd_reify (EV_A);
850		1144
851	/* calculate blocking time */	1145	/* calculate blocking time */
852		1146
853	/* we only need this for !monotonic clockor timers, but as we basically	1147	/* we only need this for !monotonic clock or timers, but as we basically
854	always have timers, we just calculate it always */	1148	always have timers, we just calculate it always */
855	#if EV_USE_MONOTONIC	1149	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1150	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1151	time_update_monotonic (EV_A);
858	else	1152	else
…		…
868	{	1162	{
869	block = MAX_BLOCKTIME;	1163	block = MAX_BLOCKTIME;
870		1164
871	if (timercnt)	1165	if (timercnt)
872	{	1166	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
874	if (block > to) block = to;	1168	if (block > to) block = to;
875	}	1169	}
876		1170
877	if (periodiccnt)	1171	if (periodiccnt)
878	{	1172	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
880	if (block > to) block = to;	1174	if (block > to) block = to;
881	}	1175	}
882		1176
883	if (block < 0.) block = 0.;	1177	if (block < 0.) block = 0.;
884	}	1178	}
…		…
891	/* queue pending timers and reschedule them */	1185	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1186	timers_reify (EV_A); /* relative timers called last */
893	periodics_reify (EV_A); /* absolute timers called first */	1187	periodics_reify (EV_A); /* absolute timers called first */
894		1188
895	/* queue idle watchers unless io or timers are pending */	1189	/* queue idle watchers unless io or timers are pending */
896	if (!pendingcnt)	1190	if (idlecnt && !any_pending (EV_A))
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898		1192
899	/* queue check watchers, to be executed first */	1193	/* queue check watchers, to be executed first */
900	if (checkcnt)	1194	if (checkcnt)
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
976	return;	1270	return;
977		1271
978	assert (("ev_io_start called with negative fd", fd >= 0));	1272	assert (("ev_io_start called with negative fd", fd >= 0));
979		1273
980	ev_start (EV_A_ (W)w, 1);	1274	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1275	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1276	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1277
984	fd_change (EV_A_ fd);	1278	fd_change (EV_A_ fd);
985	}	1279	}
986		1280
…		…
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1295	ev_timer_start (EV_P_ struct ev_timer *w)
1002	{	1296	{
1003	if (ev_is_active (w))	1297	if (ev_is_active (w))
1004	return;	1298	return;
1005		1299
1006	w->at += mn_now;	1300	((WT)w)->at += mn_now;
1007		1301
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1302	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		1303
1010	ev_start (EV_A_ (W)w, ++timercnt);	1304	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1012	timers [timercnt - 1] = w;	1306	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1307	upheap ((WT *)timers, timercnt - 1);
		1308
		1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014	}	1310	}
1015		1311
1016	void	1312	void
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1313	ev_timer_stop (EV_P_ struct ev_timer *w)
1018	{	1314	{
1019	ev_clear_pending (EV_A_ (W)w);	1315	ev_clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1316	if (!ev_is_active (w))
1021	return;	1317	return;
1022		1318
		1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1320
1023	if (w->active < timercnt--)	1321	if (((W)w)->active < timercnt--)
1024	{	1322	{
1025	timers [w->active - 1] = timers [timercnt];	1323	timers [((W)w)->active - 1] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027	}	1325	}
1028		1326
1029	w->at = w->repeat;	1327	((WT)w)->at = w->repeat;
1030		1328
1031	ev_stop (EV_A_ (W)w);	1329	ev_stop (EV_A_ (W)w);
1032	}	1330	}
1033		1331
1034	void	1332	void
1035	ev_timer_again (EV_P_ struct ev_timer *w)	1333	ev_timer_again (EV_P_ struct ev_timer *w)
1036	{	1334	{
1037	if (ev_is_active (w))	1335	if (ev_is_active (w))
1038	{	1336	{
1039	if (w->repeat)	1337	if (w->repeat)
1040	{
1041	w->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1043	}
1044	else	1339	else
1045	ev_timer_stop (EV_A_ w);	1340	ev_timer_stop (EV_A_ w);
1046	}	1341	}
1047	else if (w->repeat)	1342	else if (w->repeat)
1048	ev_timer_start (EV_A_ w);	1343	ev_timer_start (EV_A_ w);
…		…
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1347	ev_periodic_start (EV_P_ struct ev_periodic *w)
1053	{	1348	{
1054	if (ev_is_active (w))	1349	if (ev_is_active (w))
1055	return;	1350	return;
1056		1351
		1352	if (w->reschedule_cb)
		1353	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1354	else if (w->interval)
		1355	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1356	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059	/* this formula differs from the one in periodic_reify because we do not always round up */	1357	/* this formula differs from the one in periodic_reify because we do not always round up */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1358	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1359	}
1062		1360
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1361	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1065	periodics [periodiccnt - 1] = w;	1363	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1364	upheap ((WT *)periodics, periodiccnt - 1);
		1365
		1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067	}	1367	}
1068		1368
1069	void	1369	void
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071	{	1371	{
1072	ev_clear_pending (EV_A_ (W)w);	1372	ev_clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1373	if (!ev_is_active (w))
1074	return;	1374	return;
1075		1375
		1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1377
1076	if (w->active < periodiccnt--)	1378	if (((W)w)->active < periodiccnt--)
1077	{	1379	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080	}	1382	}
1081		1383
		1384	ev_stop (EV_A_ (W)w);
		1385	}
		1386
		1387	void
		1388	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1389	{
		1390	/* TODO: use adjustheap and recalculation */
		1391	ev_periodic_stop (EV_A_ w);
		1392	ev_periodic_start (EV_A_ w);
		1393	}
		1394
		1395	void
		1396	ev_idle_start (EV_P_ struct ev_idle *w)
		1397	{
		1398	if (ev_is_active (w))
		1399	return;
		1400
		1401	ev_start (EV_A_ (W)w, ++idlecnt);
		1402	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1403	idles [idlecnt - 1] = w;
		1404	}
		1405
		1406	void
		1407	ev_idle_stop (EV_P_ struct ev_idle *w)
		1408	{
		1409	ev_clear_pending (EV_A_ (W)w);
		1410	if (ev_is_active (w))
		1411	return;
		1412
		1413	idles [((W)w)->active - 1] = idles [--idlecnt];
		1414	ev_stop (EV_A_ (W)w);
		1415	}
		1416
		1417	void
		1418	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1419	{
		1420	if (ev_is_active (w))
		1421	return;
		1422
		1423	ev_start (EV_A_ (W)w, ++preparecnt);
		1424	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1425	prepares [preparecnt - 1] = w;
		1426	}
		1427
		1428	void
		1429	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1430	{
		1431	ev_clear_pending (EV_A_ (W)w);
		1432	if (ev_is_active (w))
		1433	return;
		1434
		1435	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1436	ev_stop (EV_A_ (W)w);
		1437	}
		1438
		1439	void
		1440	ev_check_start (EV_P_ struct ev_check *w)
		1441	{
		1442	if (ev_is_active (w))
		1443	return;
		1444
		1445	ev_start (EV_A_ (W)w, ++checkcnt);
		1446	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1447	checks [checkcnt - 1] = w;
		1448	}
		1449
		1450	void
		1451	ev_check_stop (EV_P_ struct ev_check *w)
		1452	{
		1453	ev_clear_pending (EV_A_ (W)w);
		1454	if (ev_is_active (w))
		1455	return;
		1456
		1457	checks [((W)w)->active - 1] = checks [--checkcnt];
1082	ev_stop (EV_A_ (W)w);	1458	ev_stop (EV_A_ (W)w);
1083	}	1459	}
1084		1460
1085	#ifndef SA_RESTART	1461	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1462	# define SA_RESTART 0
1087	#endif	1463	#endif
1088		1464
1089	void	1465	void
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1466	ev_signal_start (EV_P_ struct ev_signal *w)
1091	{	1467	{
		1468	#if EV_MULTIPLICITY
		1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1470	#endif
1092	if (ev_is_active (w))	1471	if (ev_is_active (w))
1093	return;	1472	return;
1094		1473
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1474	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1475
1097	ev_start (EV_A_ (W)w, 1);	1476	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1479
1101	if (!w->next)	1480	if (!((WL)w)->next)
1102	{	1481	{
		1482	#if WIN32
		1483	signal (w->signum, sighandler);
		1484	#else
1103	struct sigaction sa;	1485	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1486	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1487	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1488	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1489	sigaction (w->signum, &sa, 0);
		1490	#endif
1108	}	1491	}
1109	}	1492	}
1110		1493
1111	void	1494	void
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1495	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1121	if (!signals [w->signum - 1].head)	1504	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1505	signal (w->signum, SIG_DFL);
1123	}	1506	}
1124		1507
1125	void	1508	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)
1127	{
1128	if (ev_is_active (w))
1129	return;
1130
1131	ev_start (EV_A_ (W)w, ++idlecnt);
1132	array_needsize (idles, idlemax, idlecnt, );
1133	idles [idlecnt - 1] = w;
1134	}
1135
1136	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)
1138	{
1139	ev_clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))
1141	return;
1142
1143	idles [w->active - 1] = idles [--idlecnt];
1144	ev_stop (EV_A_ (W)w);
1145	}
1146
1147	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
1149	{
1150	if (ev_is_active (w))
1151	return;
1152
1153	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );
1155	prepares [preparecnt - 1] = w;
1156	}
1157
1158	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160	{
1161	ev_clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))
1163	return;
1164
1165	prepares [w->active - 1] = prepares [--preparecnt];
1166	ev_stop (EV_A_ (W)w);
1167	}
1168
1169	void
1170	ev_check_start (EV_P_ struct ev_check *w)
1171	{
1172	if (ev_is_active (w))
1173	return;
1174
1175	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );
1177	checks [checkcnt - 1] = w;
1178	}
1179
1180	void
1181	ev_check_stop (EV_P_ struct ev_check *w)
1182	{
1183	ev_clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))
1185	return;
1186
1187	checks [w->active - 1] = checks [--checkcnt];
1188	ev_stop (EV_A_ (W)w);
1189	}
1190
1191	void
1192	ev_child_start (EV_P_ struct ev_child *w)	1509	ev_child_start (EV_P_ struct ev_child *w)
1193	{	1510	{
		1511	#if EV_MULTIPLICITY
		1512	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1513	#endif
1194	if (ev_is_active (w))	1514	if (ev_is_active (w))
1195	return;	1515	return;
1196		1516
1197	ev_start (EV_A_ (W)w, 1);	1517	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1225	void (cb)(int revents, void arg) = once->cb;	1545	void (cb)(int revents, void arg) = once->cb;
1226	void *arg = once->arg;	1546	void *arg = once->arg;
1227		1547
1228	ev_io_stop (EV_A_ &once->io);	1548	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	1549	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	1550	ev_free (once);
1231		1551
1232	cb (revents, arg);	1552	cb (revents, arg);
1233	}	1553	}
1234		1554
1235	static void	1555	static void
…		…
1245	}	1565	}
1246		1566
1247	void	1567	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1568	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1249	{	1569	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	1570	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1251		1571
1252	if (!once)	1572	if (!once)
1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1573	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1254	else	1574	else
1255	{	1575	{
1256	once->cb = cb;	1576	once->cb = cb;
1257	once->arg = arg;	1577	once->arg = arg;
1258		1578
1259	ev_watcher_init (&once->io, once_cb_io);	1579	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	1580	if (fd >= 0)
1261	{	1581	{
1262	ev_io_set (&once->io, fd, events);	1582	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	1583	ev_io_start (EV_A_ &once->io);
1264	}	1584	}
1265		1585
1266	ev_watcher_init (&once->to, once_cb_to);	1586	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	1587	if (timeout >= 0.)
1268	{	1588	{
1269	ev_timer_set (&once->to, timeout, 0.);	1589	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	1590	ev_timer_start (EV_A_ &once->to);
1271	}	1591	}
1272	}	1592	}
1273	}	1593	}
1274		1594
1275	/*****************************************************************************/
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif
1331
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}
1352
1353	#endif
1354
1355
1356
1357

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Comparing libev/ev.c (file contents): Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs. Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC