[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 1.86 by root, Sat Nov 10 03:19:21 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	{
		226	ev_tstamp ev_rt_now;
139	# define VAR(name,decl) decl;	227	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	228	#include "ev_vars.h"
141	};
142	# undef VAR	229	#undef VAR
		230	};
143	# include "ev_wrap.h"	231	#include "ev_wrap.h"
		232
		233	struct ev_loop default_loop_struct;
		234	static struct ev_loop *default_loop;
144		235
145	#else	236	#else
146		237
		238	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	239	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	240	#include "ev_vars.h"
149	# undef VAR	241	#undef VAR
		242
		243	static int default_loop;
150		244
151	#endif	245	#endif
152		246
153	/*****************************************************************************/	247	/*****************************************************************************/
154		248
…		…
179	#endif	273	#endif
180		274
181	return ev_time ();	275	return ev_time ();
182	}	276	}
183		277
		278	#if EV_MULTIPLICITY
184	ev_tstamp	279	ev_tstamp
185	ev_now (EV_P)	280	ev_now (EV_P)
186	{	281	{
187	return rt_now;	282	return ev_rt_now;
188	}	283	}
		284	#endif
189		285
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	286	#define array_roundsize(type,n) ((n) \| 4 & ~3)
191		287
192	#define array_needsize(base,cur,cnt,init) \	288	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	289	if (expect_false ((cnt) > cur)) \
194	{ \	290	{ \
195	int newcnt = cur; \	291	int newcnt = cur; \
196	do \	292	do \
197	{ \	293	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	294	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	295	} \
200	while ((cnt) > newcnt); \	296	while ((cnt) > newcnt); \
201	\	297	\
202	base = realloc (base, sizeof (base) (newcnt)); \	298	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	299	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	300	cur = newcnt; \
205	}	301	}
		302
		303	#define array_slim(type,stem) \
		304	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		305	{ \
		306	stem ## max = array_roundsize (stem ## cnt >> 1); \
		307	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		308	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		309	}
		310
		311	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		312	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		313	#define array_free_microshit(stem) \
		314	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		315
		316	#define array_free(stem, idx) \
		317	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		318
207	/*****************************************************************************/	319	/*****************************************************************************/
208		320
209	static void	321	static void
210	anfds_init (ANFD *base, int count)	322	anfds_init (ANFD *base, int count)
…		…
217		329
218	++base;	330	++base;
219	}	331	}
220	}	332	}
221		333
222	static void	334	void
223	event (EV_P_ W w, int events)	335	ev_feed_event (EV_P_ void *w, int revents)
224	{	336	{
		337	W w_ = (W)w;
		338
225	if (w->pending)	339	if (w_->pending)
226	{	340	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	341	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	342	return;
229	}	343	}
230		344
231	w->pending = ++pendingcnt [ABSPRI (w)];	345	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	346	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	347	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	348	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	349	}
236		350
237	static void	351	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	352	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	353	{
240	int i;	354	int i;
241		355
242	for (i = 0; i < eventcnt; ++i)	356	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	357	ev_feed_event (EV_A_ events [i], type);
244	}	358	}
245		359
246	static void	360	inline void
247	fd_event (EV_P_ int fd, int events)	361	fd_event (EV_P_ int fd, int revents)
248	{	362	{
249	ANFD *anfd = anfds + fd;	363	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	364	struct ev_io *w;
251		365
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	366	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	367	{
254	int ev = w->events & events;	368	int ev = w->events & revents;
255		369
256	if (ev)	370	if (ev)
257	event (EV_A_ (W)w, ev);	371	ev_feed_event (EV_A_ (W)w, ev);
258	}	372	}
		373	}
		374
		375	void
		376	ev_feed_fd_event (EV_P_ int fd, int revents)
		377	{
		378	fd_event (EV_A_ fd, revents);
259	}	379	}
260		380
261	/*****************************************************************************/	381	/*****************************************************************************/
262		382
263	static void	383	static void
…		…
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	396	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	397	events \|= w->events;
278		398
279	anfd->reify = 0;	399	anfd->reify = 0;
280		400
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	401	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	402	anfd->events = events;
285	}
286	}	403	}
287		404
288	fdchangecnt = 0;	405	fdchangecnt = 0;
289	}	406	}
290		407
291	static void	408	static void
292	fd_change (EV_P_ int fd)	409	fd_change (EV_P_ int fd)
293	{	410	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	411	if (anfds [fd].reify)
295	return;	412	return;
296		413
297	anfds [fd].reify = 1;	414	anfds [fd].reify = 1;
298		415
299	++fdchangecnt;	416	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	417	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
301	fdchanges [fdchangecnt - 1] = fd;	418	fdchanges [fdchangecnt - 1] = fd;
302	}	419	}
303		420
304	static void	421	static void
305	fd_kill (EV_P_ int fd)	422	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	424	struct ev_io *w;
308		425
309	while ((w = (struct ev_io *)anfds [fd].head))	426	while ((w = (struct ev_io *)anfds [fd].head))
310	{	427	{
311	ev_io_stop (EV_A_ w);	428	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	429	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	430	}
		431	}
		432
		433	static int
		434	fd_valid (int fd)
		435	{
		436	#ifdef WIN32
		437	return !!win32_get_osfhandle (fd);
		438	#else
		439	return fcntl (fd, F_GETFD) != -1;
		440	#endif
314	}	441	}
315		442
316	/* called on EBADF to verify fds */	443	/* called on EBADF to verify fds */
317	static void	444	static void
318	fd_ebadf (EV_P)	445	fd_ebadf (EV_P)
319	{	446	{
320	int fd;	447	int fd;
321		448
322	for (fd = 0; fd < anfdmax; ++fd)	449	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	450	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	451	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	452	fd_kill (EV_A_ fd);
326	}	453	}
327		454
328	/* called on ENOMEM in select/poll to kill some fds and retry */	455	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	456	static void
330	fd_enomem (EV_P)	457	fd_enomem (EV_P)
331	{	458	{
332	int fd = anfdmax;	459	int fd;
333		460
334	while (fd--)	461	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	462	if (anfds [fd].events)
336	{	463	{
337	close (fd);
338	fd_kill (EV_A_ fd);	464	fd_kill (EV_A_ fd);
339	return;	465	return;
340	}	466	}
341	}	467	}
342		468
		469	/* usually called after fork if method needs to re-arm all fds from scratch */
		470	static void
		471	fd_rearm_all (EV_P)
		472	{
		473	int fd;
		474
		475	/* this should be highly optimised to not do anything but set a flag */
		476	for (fd = 0; fd < anfdmax; ++fd)
		477	if (anfds [fd].events)
		478	{
		479	anfds [fd].events = 0;
		480	fd_change (EV_A_ fd);
		481	}
		482	}
		483
343	/*****************************************************************************/	484	/*****************************************************************************/
344		485
345	static void	486	static void
346	upheap (WT *heap, int k)	487	upheap (WT *heap, int k)
347	{	488	{
348	WT w = heap [k];	489	WT w = heap [k];
349		490
350	while (k && heap [k >> 1]->at > w->at)	491	while (k && heap [k >> 1]->at > w->at)
351	{	492	{
352	heap [k] = heap [k >> 1];	493	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	494	((W)heap [k])->active = k + 1;
354	k >>= 1;	495	k >>= 1;
355	}	496	}
356		497
357	heap [k] = w;	498	heap [k] = w;
358	heap [k]->active = k + 1;	499	((W)heap [k])->active = k + 1;
359		500
360	}	501	}
361		502
362	static void	503	static void
363	downheap (WT *heap, int N, int k)	504	downheap (WT *heap, int N, int k)
…		…
373		514
374	if (w->at <= heap [j]->at)	515	if (w->at <= heap [j]->at)
375	break;	516	break;
376		517
377	heap [k] = heap [j];	518	heap [k] = heap [j];
378	heap [k]->active = k + 1;	519	((W)heap [k])->active = k + 1;
379	k = j;	520	k = j;
380	}	521	}
381		522
382	heap [k] = w;	523	heap [k] = w;
383	heap [k]->active = k + 1;	524	((W)heap [k])->active = k + 1;
		525	}
		526
		527	inline void
		528	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		529	{
		530	ev_tstamp old_at = heap [k]->at;
		531	heap [k]->at = at;
		532
		533	if (old_at < at)
		534	downheap (heap, N, k);
		535	else
		536	upheap (heap, k);
384	}	537	}
385		538
386	/*****************************************************************************/	539	/*****************************************************************************/
387		540
388	typedef struct	541	typedef struct
389	{	542	{
390	struct ev_watcher_list *head;	543	WL head;
391	sig_atomic_t volatile gotsig;	544	sig_atomic_t volatile gotsig;
392	} ANSIG;	545	} ANSIG;
393		546
394	static ANSIG *signals;	547	static ANSIG *signals;
395	static int signalmax;	548	static int signalmax;
396		549
397	static int sigpipe [2];	550	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	551	static sig_atomic_t volatile gotsig;
		552	static struct ev_io sigev;
399		553
400	static void	554	static void
401	signals_init (ANSIG *base, int count)	555	signals_init (ANSIG *base, int count)
402	{	556	{
403	while (count--)	557	while (count--)
…		…
410	}	564	}
411		565
412	static void	566	static void
413	sighandler (int signum)	567	sighandler (int signum)
414	{	568	{
		569	#if WIN32
		570	signal (signum, sighandler);
		571	#endif
		572
415	signals [signum - 1].gotsig = 1;	573	signals [signum - 1].gotsig = 1;
416		574
417	if (!gotsig)	575	if (!gotsig)
418	{	576	{
419	int old_errno = errno;	577	int old_errno = errno;
420	gotsig = 1;	578	gotsig = 1;
		579	#ifdef WIN32
		580	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		581	#else
421	write (sigpipe [1], &signum, 1);	582	write (sigpipe [1], &signum, 1);
		583	#endif
422	errno = old_errno;	584	errno = old_errno;
423	}	585	}
424	}	586	}
425		587
		588	void
		589	ev_feed_signal_event (EV_P_ int signum)
		590	{
		591	WL w;
		592
		593	#if EV_MULTIPLICITY
		594	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		595	#endif
		596
		597	--signum;
		598
		599	if (signum < 0 \|\| signum >= signalmax)
		600	return;
		601
		602	signals [signum].gotsig = 0;
		603
		604	for (w = signals [signum].head; w; w = w->next)
		605	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		606	}
		607
426	static void	608	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	609	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	610	{
429	struct ev_watcher_list *w;
430	int signum;	611	int signum;
431		612
		613	#ifdef WIN32
		614	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		615	#else
432	read (sigpipe [0], &revents, 1);	616	read (sigpipe [0], &revents, 1);
		617	#endif
433	gotsig = 0;	618	gotsig = 0;
434		619
435	for (signum = signalmax; signum--; )	620	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	621	if (signals [signum].gotsig)
437	{	622	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	}	623	}
444		624
445	static void	625	static void
446	siginit (EV_P)	626	siginit (EV_P)
447	{	627	{
…		…
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	639	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	640	}
461		641
462	/*****************************************************************************/	642	/*****************************************************************************/
463		643
		644	static struct ev_child *childs [PID_HASHSIZE];
		645
464	#ifndef WIN32	646	#ifndef WIN32
		647
		648	static struct ev_signal childev;
465		649
466	#ifndef WCONTINUED	650	#ifndef WCONTINUED
467	# define WCONTINUED 0	651	# define WCONTINUED 0
468	#endif	652	#endif
469		653
…		…
473	struct ev_child *w;	657	struct ev_child *w;
474		658
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	659	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)	660	if (w->pid == pid \|\| !w->pid)
477	{	661	{
478	w->priority = sw->priority; /* need to do it now */	662	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	663	w->rpid = pid;
480	w->rstatus = status;	664	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	665	ev_feed_event (EV_A_ (W)w, EV_CHILD);
482	}	666	}
483	}	667	}
484		668
485	static void	669	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	670	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
488	int pid, status;	672	int pid, status;
489		673
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	674	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	675	{
492	/* make sure we are called again until all childs have been reaped */	676	/* make sure we are called again until all childs have been reaped */
493	event (EV_A_ (W)sw, EV_SIGNAL);	677	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		678
495	child_reap (EV_A_ sw, pid, pid, status);	679	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 */	680	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
497	}	681	}
498	}	682	}
…		…
505	# include "ev_kqueue.c"	689	# include "ev_kqueue.c"
506	#endif	690	#endif
507	#if EV_USE_EPOLL	691	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	692	# include "ev_epoll.c"
509	#endif	693	#endif
510	#if EV_USEV_POLL	694	#if EV_USE_POLL
511	# include "ev_poll.c"	695	# include "ev_poll.c"
512	#endif	696	#endif
513	#if EV_USE_SELECT	697	#if EV_USE_SELECT
514	# include "ev_select.c"	698	# include "ev_select.c"
515	#endif	699	#endif
…		…
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	739	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	740	have_monotonic = 1;
557	}	741	}
558	#endif	742	#endif
559		743
560	rt_now = ev_time ();	744	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	745	mn_now = get_clock ();
562	now_floor = mn_now;	746	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	747	rtmn_diff = ev_rt_now - mn_now;
564
565	if (pipe (sigpipe))
566	return 0;
567		748
568	if (methods == EVMETHOD_AUTO)	749	if (methods == EVMETHOD_AUTO)
569	if (!enable_secure () && getenv ("LIBmethodS"))	750	if (!enable_secure () && getenv ("LIBEV_METHODS"))
570	methods = atoi (getenv ("LIBmethodS"));	751	methods = atoi (getenv ("LIBEV_METHODS"));
571	else	752	else
572	methods = EVMETHOD_ANY;	753	methods = EVMETHOD_ANY;
573		754
574	method = 0;	755	method = 0;
		756	#if EV_USE_WIN32
		757	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		758	#endif
575	#if EV_USE_KQUEUE	759	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	760	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577	#endif	761	#endif
578	#if EV_USE_EPOLL	762	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	763	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580	#endif	764	#endif
581	#if EV_USEV_POLL	765	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	766	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583	#endif	767	#endif
584	#if EV_USE_SELECT	768	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	769	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586	#endif	770	#endif
587		771
		772	ev_init (&sigev, sigcb);
		773	ev_set_priority (&sigev, EV_MAXPRI);
		774	}
		775	}
		776
		777	void
		778	loop_destroy (EV_P)
		779	{
		780	int i;
		781
		782	#if EV_USE_WIN32
		783	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		784	#endif
		785	#if EV_USE_KQUEUE
		786	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		787	#endif
		788	#if EV_USE_EPOLL
		789	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		790	#endif
		791	#if EV_USE_POLL
		792	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		793	#endif
		794	#if EV_USE_SELECT
		795	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		796	#endif
		797
		798	for (i = NUMPRI; i--; )
		799	array_free (pending, [i]);
		800
		801	/* have to use the microsoft-never-gets-it-right macro */
		802	array_free_microshit (fdchange);
		803	array_free_microshit (timer);
		804	array_free_microshit (periodic);
		805	array_free_microshit (idle);
		806	array_free_microshit (prepare);
		807	array_free_microshit (check);
		808
		809	method = 0;
		810	}
		811
		812	static void
		813	loop_fork (EV_P)
		814	{
		815	#if EV_USE_EPOLL
		816	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		817	#endif
		818	#if EV_USE_KQUEUE
		819	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		820	#endif
		821
		822	if (ev_is_active (&sigev))
		823	{
		824	/* default loop */
		825
		826	ev_ref (EV_A);
		827	ev_io_stop (EV_A_ &sigev);
		828	close (sigpipe [0]);
		829	close (sigpipe [1]);
		830
		831	while (pipe (sigpipe))
		832	syserr ("(libev) error creating pipe");
		833
		834	siginit (EV_A);
		835	}
		836
		837	postfork = 0;
		838	}
		839
		840	#if EV_MULTIPLICITY
		841	struct ev_loop *
		842	ev_loop_new (int methods)
		843	{
		844	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		845
		846	memset (loop, 0, sizeof (struct ev_loop));
		847
		848	loop_init (EV_A_ methods);
		849
		850	if (ev_method (EV_A))
		851	return loop;
		852
		853	return 0;
		854	}
		855
		856	void
		857	ev_loop_destroy (EV_P)
		858	{
		859	loop_destroy (EV_A);
		860	ev_free (loop);
		861	}
		862
		863	void
		864	ev_loop_fork (EV_P)
		865	{
		866	postfork = 1;
		867	}
		868
		869	#endif
		870
		871	#if EV_MULTIPLICITY
		872	struct ev_loop *
		873	#else
		874	int
		875	#endif
		876	ev_default_loop (int methods)
		877	{
		878	if (sigpipe [0] == sigpipe [1])
		879	if (pipe (sigpipe))
		880	return 0;
		881
		882	if (!default_loop)
		883	{
		884	#if EV_MULTIPLICITY
		885	struct ev_loop *loop = default_loop = &default_loop_struct;
		886	#else
		887	default_loop = 1;
		888	#endif
		889
		890	loop_init (EV_A_ methods);
		891
588	if (method)	892	if (ev_method (EV_A))
589	{	893	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	894	siginit (EV_A);
593		895
594	#ifndef WIN32	896	#ifndef WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	897	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	898	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	899	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	900	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	901	#endif
600	}	902	}
		903	else
		904	default_loop = 0;
601	}	905	}
602		906
603	return method;	907	return default_loop;
604	}	908	}
605		909
		910	void
		911	ev_default_destroy (void)
		912	{
606	#ifdef EV_MULTIPLICITY	913	#if EV_MULTIPLICITY
607		914	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	915	#endif
		916
		917	#ifndef WIN32
		918	ev_ref (EV_A); /* child watcher */
		919	ev_signal_stop (EV_A_ &childev);
		920	#endif
		921
		922	ev_ref (EV_A); /* signal watcher */
		923	ev_io_stop (EV_A_ &sigev);
		924
		925	close (sigpipe [0]); sigpipe [0] = 0;
		926	close (sigpipe [1]); sigpipe [1] = 0;
		927
		928	loop_destroy (EV_A);
		929	}
		930
		931	void
		932	ev_default_fork (void)
		933	{
		934	#if EV_MULTIPLICITY
		935	struct ev_loop *loop = default_loop;
		936	#endif
		937
		938	if (method)
		939	postfork = 1;
		940	}
634		941
635	/*****************************************************************************/	942	/*****************************************************************************/
636		943
637	void	944	static int
638	ev_fork_prepare (void)	945	any_pending (EV_P)
639	{	946	{
640	/* nop */	947	int pri;
641	}
642		948
643	void	949	for (pri = NUMPRI; pri--; )
644	ev_fork_parent (void)	950	if (pendingcnt [pri])
645	{	951	return 1;
646	/* nop */
647	}
648		952
649	void	953	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	}	954	}
666
667	/*****************************************************************************/
668		955
669	static void	956	static void
670	call_pending (EV_P)	957	call_pending (EV_P)
671	{	958	{
672	int pri;	959	int pri;
…		…
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	964	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		965
679	if (p->w)	966	if (p->w)
680	{	967	{
681	p->w->pending = 0;	968	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	969	EV_CB_INVOKE (p->w, p->events);
683	}	970	}
684	}	971	}
685	}	972	}
686		973
687	static void	974	static void
688	timers_reify (EV_P)	975	timers_reify (EV_P)
689	{	976	{
690	while (timercnt && timers [0]->at <= mn_now)	977	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	978	{
692	struct ev_timer *w = timers [0];	979	struct ev_timer *w = timers [0];
		980
		981	assert (("inactive timer on timer heap detected", ev_is_active (w)));
693		982
694	/* first reschedule or stop timer */	983	/* first reschedule or stop timer */
695	if (w->repeat)	984	if (w->repeat)
696	{	985	{
697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	986	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
698	w->at = mn_now + w->repeat;	987	((WT)w)->at = mn_now + w->repeat;
699	downheap ((WT *)timers, timercnt, 0);	988	downheap ((WT *)timers, timercnt, 0);
700	}	989	}
701	else	990	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	991	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		992
704	event (EV_A_ (W)w, EV_TIMEOUT);	993	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	994	}
706	}	995	}
707		996
708	static void	997	static void
709	periodics_reify (EV_P)	998	periodics_reify (EV_P)
710	{	999	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	1000	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712	{	1001	{
713	struct ev_periodic *w = periodics [0];	1002	struct ev_periodic *w = periodics [0];
714		1003
		1004	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1005
715	/* first reschedule or stop timer */	1006	/* first reschedule or stop timer */
716	if (w->interval)	1007	if (w->reschedule_cb)
717	{	1008	{
		1009	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1010
		1011	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1012	downheap ((WT *)periodics, periodiccnt, 0);
		1013	}
		1014	else if (w->interval)
		1015	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1016	((WT)w)->at += floor ((ev_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));	1017	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	1018	downheap ((WT *)periodics, periodiccnt, 0);
721	}	1019	}
722	else	1020	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1021	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1022
725	event (EV_A_ (W)w, EV_PERIODIC);	1023	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1024	}
727	}	1025	}
728		1026
729	static void	1027	static void
730	periodics_reschedule (EV_P)	1028	periodics_reschedule (EV_P)
…		…
734	/* adjust periodics after time jump */	1032	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1033	for (i = 0; i < periodiccnt; ++i)
736	{	1034	{
737	struct ev_periodic *w = periodics [i];	1035	struct ev_periodic *w = periodics [i];
738		1036
		1037	if (w->reschedule_cb)
		1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739	if (w->interval)	1039	else if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1040	((WT)w)->at += ceil ((ev_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	}	1041	}
		1042
		1043	/* now rebuild the heap */
		1044	for (i = periodiccnt >> 1; i--; )
		1045	downheap ((WT *)periodics, periodiccnt, i);
752	}	1046	}
753		1047
754	inline int	1048	inline int
755	time_update_monotonic (EV_P)	1049	time_update_monotonic (EV_P)
756	{	1050	{
757	mn_now = get_clock ();	1051	mn_now = get_clock ();
758		1052
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1053	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760	{	1054	{
761	rt_now = rtmn_diff + mn_now;	1055	ev_rt_now = rtmn_diff + mn_now;
762	return 0;	1056	return 0;
763	}	1057	}
764	else	1058	else
765	{	1059	{
766	now_floor = mn_now;	1060	now_floor = mn_now;
767	rt_now = ev_time ();	1061	ev_rt_now = ev_time ();
768	return 1;	1062	return 1;
769	}	1063	}
770	}	1064	}
771		1065
772	static void	1066	static void
…		…
781	{	1075	{
782	ev_tstamp odiff = rtmn_diff;	1076	ev_tstamp odiff = rtmn_diff;
783		1077
784	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1078	for (i = 4; --i; ) /* loop a few times, before making important decisions */
785	{	1079	{
786	rtmn_diff = rt_now - mn_now;	1080	rtmn_diff = ev_rt_now - mn_now;
787		1081
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1082	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789	return; /* all is well */	1083	return; /* all is well */
790		1084
791	rt_now = ev_time ();	1085	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1086	mn_now = get_clock ();
793	now_floor = mn_now;	1087	now_floor = mn_now;
794	}	1088	}
795		1089
796	periodics_reschedule (EV_A);	1090	periodics_reschedule (EV_A);
…		…
799	}	1093	}
800	}	1094	}
801	else	1095	else
802	#endif	1096	#endif
803	{	1097	{
804	rt_now = ev_time ();	1098	ev_rt_now = ev_time ();
805		1099
806	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1100	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
807	{	1101	{
808	periodics_reschedule (EV_A);	1102	periodics_reschedule (EV_A);
809		1103
810	/* adjust timers. this is easy, as the offset is the same for all */	1104	/* adjust timers. this is easy, as the offset is the same for all */
811	for (i = 0; i < timercnt; ++i)	1105	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1106	((WT)timers [i])->at += ev_rt_now - mn_now;
813	}	1107	}
814		1108
815	mn_now = rt_now;	1109	mn_now = ev_rt_now;
816	}	1110	}
817	}	1111	}
818		1112
819	void	1113	void
820	ev_ref (EV_P)	1114	ev_ref (EV_P)
…		…
843	{	1137	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1138	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1139	call_pending (EV_A);
846	}	1140	}
847		1141
		1142	/* we might have forked, so reify kernel state if necessary */
		1143	if (expect_false (postfork))
		1144	loop_fork (EV_A);
		1145
848	/* update fd-related kernel structures */	1146	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1147	fd_reify (EV_A);
850		1148
851	/* calculate blocking time */	1149	/* calculate blocking time */
852		1150
853	/* we only need this for !monotonic clockor timers, but as we basically	1151	/* we only need this for !monotonic clock or timers, but as we basically
854	always have timers, we just calculate it always */	1152	always have timers, we just calculate it always */
855	#if EV_USE_MONOTONIC	1153	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1154	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1155	time_update_monotonic (EV_A);
858	else	1156	else
859	#endif	1157	#endif
860	{	1158	{
861	rt_now = ev_time ();	1159	ev_rt_now = ev_time ();
862	mn_now = rt_now;	1160	mn_now = ev_rt_now;
863	}	1161	}
864		1162
865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1163	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
866	block = 0.;	1164	block = 0.;
867	else	1165	else
868	{	1166	{
869	block = MAX_BLOCKTIME;	1167	block = MAX_BLOCKTIME;
870		1168
871	if (timercnt)	1169	if (timercnt)
872	{	1170	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1171	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
874	if (block > to) block = to;	1172	if (block > to) block = to;
875	}	1173	}
876		1174
877	if (periodiccnt)	1175	if (periodiccnt)
878	{	1176	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1177	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
880	if (block > to) block = to;	1178	if (block > to) block = to;
881	}	1179	}
882		1180
883	if (block < 0.) block = 0.;	1181	if (block < 0.) block = 0.;
884	}	1182	}
885		1183
886	method_poll (EV_A_ block);	1184	method_poll (EV_A_ block);
887		1185
888	/* update rt_now, do magic */	1186	/* update ev_rt_now, do magic */
889	time_update (EV_A);	1187	time_update (EV_A);
890		1188
891	/* queue pending timers and reschedule them */	1189	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1190	timers_reify (EV_A); /* relative timers called last */
893	periodics_reify (EV_A); /* absolute timers called first */	1191	periodics_reify (EV_A); /* absolute timers called first */
894		1192
895	/* queue idle watchers unless io or timers are pending */	1193	/* queue idle watchers unless io or timers are pending */
896	if (!pendingcnt)	1194	if (idlecnt && !any_pending (EV_A))
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1195	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898		1196
899	/* queue check watchers, to be executed first */	1197	/* queue check watchers, to be executed first */
900	if (checkcnt)	1198	if (checkcnt)
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1199	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
976	return;	1274	return;
977		1275
978	assert (("ev_io_start called with negative fd", fd >= 0));	1276	assert (("ev_io_start called with negative fd", fd >= 0));
979		1277
980	ev_start (EV_A_ (W)w, 1);	1278	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1279	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1280	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1281
984	fd_change (EV_A_ fd);	1282	fd_change (EV_A_ fd);
985	}	1283	}
986		1284
…		…
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1299	ev_timer_start (EV_P_ struct ev_timer *w)
1002	{	1300	{
1003	if (ev_is_active (w))	1301	if (ev_is_active (w))
1004	return;	1302	return;
1005		1303
1006	w->at += mn_now;	1304	((WT)w)->at += mn_now;
1007		1305
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1306	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		1307
1010	ev_start (EV_A_ (W)w, ++timercnt);	1308	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1309	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1012	timers [timercnt - 1] = w;	1310	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1311	upheap ((WT *)timers, timercnt - 1);
		1312
		1313	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014	}	1314	}
1015		1315
1016	void	1316	void
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1317	ev_timer_stop (EV_P_ struct ev_timer *w)
1018	{	1318	{
1019	ev_clear_pending (EV_A_ (W)w);	1319	ev_clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1320	if (!ev_is_active (w))
1021	return;	1321	return;
1022		1322
		1323	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1324
1023	if (w->active < timercnt--)	1325	if (((W)w)->active < timercnt--)
1024	{	1326	{
1025	timers [w->active - 1] = timers [timercnt];	1327	timers [((W)w)->active - 1] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027	}	1329	}
1028		1330
1029	w->at = w->repeat;	1331	((WT)w)->at = w->repeat;
1030		1332
1031	ev_stop (EV_A_ (W)w);	1333	ev_stop (EV_A_ (W)w);
1032	}	1334	}
1033		1335
1034	void	1336	void
1035	ev_timer_again (EV_P_ struct ev_timer *w)	1337	ev_timer_again (EV_P_ struct ev_timer *w)
1036	{	1338	{
1037	if (ev_is_active (w))	1339	if (ev_is_active (w))
1038	{	1340	{
1039	if (w->repeat)	1341	if (w->repeat)
1040	{
1041	w->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1342	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1043	}
1044	else	1343	else
1045	ev_timer_stop (EV_A_ w);	1344	ev_timer_stop (EV_A_ w);
1046	}	1345	}
1047	else if (w->repeat)	1346	else if (w->repeat)
1048	ev_timer_start (EV_A_ w);	1347	ev_timer_start (EV_A_ w);
…		…
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1351	ev_periodic_start (EV_P_ struct ev_periodic *w)
1053	{	1352	{
1054	if (ev_is_active (w))	1353	if (ev_is_active (w))
1055	return;	1354	return;
1056		1355
		1356	if (w->reschedule_cb)
		1357	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1358	else if (w->interval)
		1359	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1360	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 */	1361	/* 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;	1362	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1363	}
1062		1364
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1365	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1366	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1065	periodics [periodiccnt - 1] = w;	1367	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1368	upheap ((WT *)periodics, periodiccnt - 1);
		1369
		1370	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067	}	1371	}
1068		1372
1069	void	1373	void
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1374	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071	{	1375	{
1072	ev_clear_pending (EV_A_ (W)w);	1376	ev_clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1377	if (!ev_is_active (w))
1074	return;	1378	return;
1075		1379
		1380	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1381
1076	if (w->active < periodiccnt--)	1382	if (((W)w)->active < periodiccnt--)
1077	{	1383	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1384	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1385	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080	}	1386	}
1081		1387
		1388	ev_stop (EV_A_ (W)w);
		1389	}
		1390
		1391	void
		1392	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1393	{
		1394	/* TODO: use adjustheap and recalculation */
		1395	ev_periodic_stop (EV_A_ w);
		1396	ev_periodic_start (EV_A_ w);
		1397	}
		1398
		1399	void
		1400	ev_idle_start (EV_P_ struct ev_idle *w)
		1401	{
		1402	if (ev_is_active (w))
		1403	return;
		1404
		1405	ev_start (EV_A_ (W)w, ++idlecnt);
		1406	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1407	idles [idlecnt - 1] = w;
		1408	}
		1409
		1410	void
		1411	ev_idle_stop (EV_P_ struct ev_idle *w)
		1412	{
		1413	ev_clear_pending (EV_A_ (W)w);
		1414	if (ev_is_active (w))
		1415	return;
		1416
		1417	idles [((W)w)->active - 1] = idles [--idlecnt];
		1418	ev_stop (EV_A_ (W)w);
		1419	}
		1420
		1421	void
		1422	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1423	{
		1424	if (ev_is_active (w))
		1425	return;
		1426
		1427	ev_start (EV_A_ (W)w, ++preparecnt);
		1428	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1429	prepares [preparecnt - 1] = w;
		1430	}
		1431
		1432	void
		1433	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1434	{
		1435	ev_clear_pending (EV_A_ (W)w);
		1436	if (ev_is_active (w))
		1437	return;
		1438
		1439	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1440	ev_stop (EV_A_ (W)w);
		1441	}
		1442
		1443	void
		1444	ev_check_start (EV_P_ struct ev_check *w)
		1445	{
		1446	if (ev_is_active (w))
		1447	return;
		1448
		1449	ev_start (EV_A_ (W)w, ++checkcnt);
		1450	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1451	checks [checkcnt - 1] = w;
		1452	}
		1453
		1454	void
		1455	ev_check_stop (EV_P_ struct ev_check *w)
		1456	{
		1457	ev_clear_pending (EV_A_ (W)w);
		1458	if (ev_is_active (w))
		1459	return;
		1460
		1461	checks [((W)w)->active - 1] = checks [--checkcnt];
1082	ev_stop (EV_A_ (W)w);	1462	ev_stop (EV_A_ (W)w);
1083	}	1463	}
1084		1464
1085	#ifndef SA_RESTART	1465	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1466	# define SA_RESTART 0
1087	#endif	1467	#endif
1088		1468
1089	void	1469	void
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1470	ev_signal_start (EV_P_ struct ev_signal *w)
1091	{	1471	{
		1472	#if EV_MULTIPLICITY
		1473	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1474	#endif
1092	if (ev_is_active (w))	1475	if (ev_is_active (w))
1093	return;	1476	return;
1094		1477
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1478	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1479
1097	ev_start (EV_A_ (W)w, 1);	1480	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1481	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1482	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1483
1101	if (!w->next)	1484	if (!((WL)w)->next)
1102	{	1485	{
		1486	#if WIN32
		1487	signal (w->signum, sighandler);
		1488	#else
1103	struct sigaction sa;	1489	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1490	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1491	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1492	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1493	sigaction (w->signum, &sa, 0);
		1494	#endif
1108	}	1495	}
1109	}	1496	}
1110		1497
1111	void	1498	void
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1499	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1121	if (!signals [w->signum - 1].head)	1508	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1509	signal (w->signum, SIG_DFL);
1123	}	1510	}
1124		1511
1125	void	1512	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)	1513	ev_child_start (EV_P_ struct ev_child *w)
1193	{	1514	{
		1515	#if EV_MULTIPLICITY
		1516	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1517	#endif
1194	if (ev_is_active (w))	1518	if (ev_is_active (w))
1195	return;	1519	return;
1196		1520
1197	ev_start (EV_A_ (W)w, 1);	1521	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1522	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1225	void (cb)(int revents, void arg) = once->cb;	1549	void (cb)(int revents, void arg) = once->cb;
1226	void *arg = once->arg;	1550	void *arg = once->arg;
1227		1551
1228	ev_io_stop (EV_A_ &once->io);	1552	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	1553	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	1554	ev_free (once);
1231		1555
1232	cb (revents, arg);	1556	cb (revents, arg);
1233	}	1557	}
1234		1558
1235	static void	1559	static void
…		…
1245	}	1569	}
1246		1570
1247	void	1571	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1572	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1249	{	1573	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	1574	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1251		1575
1252	if (!once)	1576	if (!once)
1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1577	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1254	else	1578	else
1255	{	1579	{
1256	once->cb = cb;	1580	once->cb = cb;
1257	once->arg = arg;	1581	once->arg = arg;
1258		1582
1259	ev_watcher_init (&once->io, once_cb_io);	1583	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	1584	if (fd >= 0)
1261	{	1585	{
1262	ev_io_set (&once->io, fd, events);	1586	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	1587	ev_io_start (EV_A_ &once->io);
1264	}	1588	}
1265		1589
1266	ev_watcher_init (&once->to, once_cb_to);	1590	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	1591	if (timeout >= 0.)
1268	{	1592	{
1269	ev_timer_set (&once->to, timeout, 0.);	1593	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	1594	ev_timer_start (EV_A_ &once->to);
1271	}	1595	}
1272	}	1596	}
1273	}	1597	}
1274		1598
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 1.86 by root, Sat Nov 10 03:19:21 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 1.86 by root, Sat Nov 10 03:19:21 2007 UTC