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

Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 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
…		…
113		150
114	typedef struct ev_watcher *W;	151	typedef struct ev_watcher *W;
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 ev_tstamp now_floor, mn_now, diff; /* monotonic clock */	155	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119	static ev_tstamp rt_now;
120	static int method;
121		156
122	static int have_monotonic; /* runtime */	157	#include "ev_win32.c"
123		158
124	static ev_tstamp method_fudge; /* stupid epoll-returns-early bug */	159	/*****************************************************************************/
125	static void (*method_modify)(EV_P_ int fd, int oev, int nev);
126	static void (*method_poll)(EV_P_ ev_tstamp timeout);
127		160
128	static int activecnt; /* number of active events */	161	static void (syserr_cb)(const char msg);
129		162
130	#if EV_USE_SELECT	163	void ev_set_syserr_cb (void (cb)(const char msg))
131	static unsigned char vec_ri, vec_ro, vec_wi, vec_wo;	164	{
132	static int vec_max;	165	syserr_cb = cb;
133	#endif	166	}
134		167
135	#if EV_USEV_POLL	168	static void
136	static struct pollfd *polls;	169	syserr (const char *msg)
137	static int pollmax, pollcnt;	170	{
138	static int pollidxs; / maps fds into structure indices */	171	if (!msg)
139	static int pollidxmax;	172	msg = "(libev) system error";
140	#endif
141		173
142	#if EV_USE_EPOLL	174	if (syserr_cb)
143	static int epoll_fd = -1;	175	syserr_cb (msg);
		176	else
		177	{
		178	perror (msg);
		179	abort ();
		180	}
		181	}
144		182
145	static struct epoll_event *events;	183	static void (alloc)(void *ptr, long size);
146	static int eventmax;
147	#endif
148		184
149	#if EV_USE_KQUEUE	185	void ev_set_allocator (void (cb)(void *ptr, long size))
150	static int kqueue_fd;	186	{
151	static struct kevent *kqueue_changes;	187	alloc = cb;
152	static int kqueue_changemax, kqueue_changecnt;	188	}
153	static struct kevent *kqueue_events;	189
154	static int kqueue_eventmax;	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
		209	typedef struct
		210	{
		211	WL head;
		212	unsigned char events;
		213	unsigned char reify;
		214	} ANFD;
		215
		216	typedef struct
		217	{
		218	W w;
		219	int events;
		220	} ANPENDING;
		221
		222	#if EV_MULTIPLICITY
		223
		224	struct ev_loop
		225	{
		226	#define VAR(name,decl) decl;
		227	#include "ev_vars.h"
		228	#undef VAR
		229	};
		230	#include "ev_wrap.h"
		231
		232	struct ev_loop default_loop_struct;
		233	static struct ev_loop *default_loop;
		234
		235	#else
		236
		237	#define VAR(name,decl) static decl;
		238	#include "ev_vars.h"
		239	#undef VAR
		240
		241	static int default_loop;
		242
155	#endif	243	#endif
156		244
157	/*****************************************************************************/	245	/*****************************************************************************/
158		246
159	inline ev_tstamp	247	inline ev_tstamp
…		…
189	ev_now (EV_P)	277	ev_now (EV_P)
190	{	278	{
191	return rt_now;	279	return rt_now;
192	}	280	}
193		281
194	#define array_roundsize(base,n) ((n) \| 4 & ~3)	282	#define array_roundsize(type,n) ((n) \| 4 & ~3)
195		283
196	#define array_needsize(base,cur,cnt,init) \	284	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	285	if (expect_false ((cnt) > cur)) \
198	{ \	286	{ \
199	int newcnt = cur; \	287	int newcnt = cur; \
200	do \	288	do \
201	{ \	289	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	290	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	291	} \
204	while ((cnt) > newcnt); \	292	while ((cnt) > newcnt); \
205	\	293	\
206	base = realloc (base, sizeof (base) (newcnt)); \	294	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
207	init (base + cur, newcnt - cur); \	295	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	296	cur = newcnt; \
209	}	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;
210		314
211	/*****************************************************************************/	315	/*****************************************************************************/
212
213	typedef struct
214	{
215	struct ev_watcher_list *head;
216	unsigned char events;
217	unsigned char reify;
218	} ANFD;
219
220	static ANFD *anfds;
221	static int anfdmax;
222		316
223	static void	317	static void
224	anfds_init (ANFD *base, int count)	318	anfds_init (ANFD *base, int count)
225	{	319	{
226	while (count--)	320	while (count--)
…		…
231		325
232	++base;	326	++base;
233	}	327	}
234	}	328	}
235		329
236	typedef struct	330	void
237	{
238	W w;
239	int events;
240	} ANPENDING;
241
242	static ANPENDING *pendings [NUMPRI];
243	static int pendingmax [NUMPRI], pendingcnt [NUMPRI];
244
245	static void
246	event (EV_P_ W w, int events)	331	ev_feed_event (EV_P_ void *w, int revents)
247	{	332	{
		333	W w_ = (W)w;
		334
248	if (w->pending)	335	if (w_->pending)
249	{	336	{
250	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	337	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
251	return;	338	return;
252	}	339	}
253		340
254	w->pending = ++pendingcnt [ABSPRI (w)];	341	w_->pending = ++pendingcnt [ABSPRI (w_)];
255	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));
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	343	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	344	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258	}	345	}
259		346
260	static void	347	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)	348	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{	349	{
263	int i;	350	int i;
264		351
265	for (i = 0; i < eventcnt; ++i)	352	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);	353	ev_feed_event (EV_A_ events [i], type);
267	}	354	}
268		355
269	static void	356	inline void
270	fd_event (EV_P_ int fd, int events)	357	fd_event (EV_P_ int fd, int revents)
271	{	358	{
272	ANFD *anfd = anfds + fd;	359	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	360	struct ev_io *w;
274		361
275	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)
276	{	363	{
277	int ev = w->events & events;	364	int ev = w->events & revents;
278		365
279	if (ev)	366	if (ev)
280	event (EV_A_ (W)w, ev);	367	ev_feed_event (EV_A_ (W)w, ev);
281	}	368	}
		369	}
		370
		371	void
		372	ev_feed_fd_event (EV_P_ int fd, int revents)
		373	{
		374	fd_event (EV_A_ fd, revents);
282	}	375	}
283		376
284	/*****************************************************************************/	377	/*****************************************************************************/
285
286	static int *fdchanges;
287	static int fdchangemax, fdchangecnt;
288		378
289	static void	379	static void
290	fd_reify (EV_P)	380	fd_reify (EV_P)
291	{	381	{
292	int i;	382	int i;
…		…
302	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)
303	events \|= w->events;	393	events \|= w->events;
304		394
305	anfd->reify = 0;	395	anfd->reify = 0;
306		396
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	397	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	398	anfd->events = events;
311	}
312	}	399	}
313		400
314	fdchangecnt = 0;	401	fdchangecnt = 0;
315	}	402	}
316		403
317	static void	404	static void
318	fd_change (EV_P_ int fd)	405	fd_change (EV_P_ int fd)
319	{	406	{
320	if (anfds [fd].reify \|\| fdchangecnt < 0)	407	if (anfds [fd].reify)
321	return;	408	return;
322		409
323	anfds [fd].reify = 1;	410	anfds [fd].reify = 1;
324		411
325	++fdchangecnt;	412	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	413	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327	fdchanges [fdchangecnt - 1] = fd;	414	fdchanges [fdchangecnt - 1] = fd;
328	}	415	}
329		416
330	static void	417	static void
331	fd_kill (EV_P_ int fd)	418	fd_kill (EV_P_ int fd)
…		…
333	struct ev_io *w;	420	struct ev_io *w;
334		421
335	while ((w = (struct ev_io *)anfds [fd].head))	422	while ((w = (struct ev_io *)anfds [fd].head))
336	{	423	{
337	ev_io_stop (EV_A_ w);	424	ev_io_stop (EV_A_ w);
338	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);
339	}	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
340	}	437	}
341		438
342	/* called on EBADF to verify fds */	439	/* called on EBADF to verify fds */
343	static void	440	static void
344	fd_ebadf (EV_P)	441	fd_ebadf (EV_P)
345	{	442	{
346	int fd;	443	int fd;
347		444
348	for (fd = 0; fd < anfdmax; ++fd)	445	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	446	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	447	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	448	fd_kill (EV_A_ fd);
352	}	449	}
353		450
354	/* 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 */
355	static void	452	static void
356	fd_enomem (EV_P)	453	fd_enomem (EV_P)
357	{	454	{
358	int fd = anfdmax;	455	int fd;
359		456
360	while (fd--)	457	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	458	if (anfds [fd].events)
362	{	459	{
363	close (fd);
364	fd_kill (EV_A_ fd);	460	fd_kill (EV_A_ fd);
365	return;	461	return;
366	}	462	}
367	}	463	}
368		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
369	/*****************************************************************************/	480	/*****************************************************************************/
370		481
371	static struct ev_timer **timers;
372	static int timermax, timercnt;
373
374	static struct ev_periodic **periodics;
375	static int periodicmax, periodiccnt;
376
377	static void	482	static void
378	upheap (WT *timers, int k)	483	upheap (WT *heap, int k)
379	{	484	{
380	WT w = timers [k];	485	WT w = heap [k];
381		486
382	while (k && timers [k >> 1]->at > w->at)	487	while (k && heap [k >> 1]->at > w->at)
383	{	488	{
384	timers [k] = timers [k >> 1];	489	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	490	((W)heap [k])->active = k + 1;
386	k >>= 1;	491	k >>= 1;
387	}	492	}
388		493
389	timers [k] = w;	494	heap [k] = w;
390	timers [k]->active = k + 1;	495	((W)heap [k])->active = k + 1;
391		496
392	}	497	}
393		498
394	static void	499	static void
395	downheap (WT *timers, int N, int k)	500	downheap (WT *heap, int N, int k)
396	{	501	{
397	WT w = timers [k];	502	WT w = heap [k];
398		503
399	while (k < (N >> 1))	504	while (k < (N >> 1))
400	{	505	{
401	int j = k << 1;	506	int j = k << 1;
402		507
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	508	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	509	++j;
405		510
406	if (w->at <= timers [j]->at)	511	if (w->at <= heap [j]->at)
407	break;	512	break;
408		513
409	timers [k] = timers [j];	514	heap [k] = heap [j];
410	timers [k]->active = k + 1;	515	((W)heap [k])->active = k + 1;
411	k = j;	516	k = j;
412	}	517	}
413		518
414	timers [k] = w;	519	heap [k] = w;
415	timers [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);
416	}	533	}
417		534
418	/*****************************************************************************/	535	/*****************************************************************************/
419		536
420	typedef struct	537	typedef struct
421	{	538	{
422	struct ev_watcher_list *head;	539	WL head;
423	sig_atomic_t volatile gotsig;	540	sig_atomic_t volatile gotsig;
424	} ANSIG;	541	} ANSIG;
425		542
426	static ANSIG *signals;	543	static ANSIG *signals;
427	static int signalmax;	544	static int signalmax;
…		…
443	}	560	}
444		561
445	static void	562	static void
446	sighandler (int signum)	563	sighandler (int signum)
447	{	564	{
		565	#if WIN32
		566	signal (signum, sighandler);
		567	#endif
		568
448	signals [signum - 1].gotsig = 1;	569	signals [signum - 1].gotsig = 1;
449		570
450	if (!gotsig)	571	if (!gotsig)
451	{	572	{
452	int old_errno = errno;	573	int old_errno = errno;
453	gotsig = 1;	574	gotsig = 1;
		575	#ifdef WIN32
		576	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		577	#else
454	write (sigpipe [1], &signum, 1);	578	write (sigpipe [1], &signum, 1);
		579	#endif
455	errno = old_errno;	580	errno = old_errno;
456	}	581	}
457	}	582	}
458		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
459	static void	604	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	605	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	606	{
462	struct ev_watcher_list *w;
463	int signum;	607	int signum;
464		608
		609	#ifdef WIN32
		610	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		611	#else
465	read (sigpipe [0], &revents, 1);	612	read (sigpipe [0], &revents, 1);
		613	#endif
466	gotsig = 0;	614	gotsig = 0;
467		615
468	for (signum = signalmax; signum--; )	616	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	617	if (signals [signum].gotsig)
470	{	618	ev_feed_signal_event (EV_A_ signum + 1);
471	signals [signum].gotsig = 0;
472
473	for (w = signals [signum].head; w; w = w->next)
474	event (EV_A_ (W)w, EV_SIGNAL);
475	}
476	}	619	}
477		620
478	static void	621	static void
479	siginit (EV_P)	622	siginit (EV_P)
480	{	623	{
…		…
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	629	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	630	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif	631	#endif
489		632
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	633	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	634	ev_io_start (EV_A_ &sigev);
		635	ev_unref (EV_A); /* child watcher should not keep loop alive */
492	}	636	}
493		637
494	/*****************************************************************************/	638	/*****************************************************************************/
495		639
496	static struct ev_idle **idles;
497	static int idlemax, idlecnt;
498
499	static struct ev_prepare **prepares;
500	static int preparemax, preparecnt;
501
502	static struct ev_check **checks;
503	static int checkmax, checkcnt;
504
505	/*****************************************************************************/
506
507	static struct ev_child *childs [PID_HASHSIZE];	640	static struct ev_child *childs [PID_HASHSIZE];
		641
		642	#ifndef WIN32
		643
508	static struct ev_signal childev;	644	static struct ev_signal childev;
509
510	#ifndef WIN32
511		645
512	#ifndef WCONTINUED	646	#ifndef WCONTINUED
513	# define WCONTINUED 0	647	# define WCONTINUED 0
514	#endif	648	#endif
515		649
…		…
519	struct ev_child *w;	653	struct ev_child *w;
520		654
521	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)
522	if (w->pid == pid \|\| !w->pid)	656	if (w->pid == pid \|\| !w->pid)
523	{	657	{
524	w->priority = sw->priority; /* need to do it now */	658	ev_priority (w) = ev_priority (sw); /* need to do it now */
525	w->rpid = pid;	659	w->rpid = pid;
526	w->rstatus = status;	660	w->rstatus = status;
527	event (EV_A_ (W)w, EV_CHILD);	661	ev_feed_event (EV_A_ (W)w, EV_CHILD);
528	}	662	}
529	}	663	}
530		664
531	static void	665	static void
532	childcb (EV_P_ struct ev_signal *sw, int revents)	666	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
534	int pid, status;	668	int pid, status;
535		669
536	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	670	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
537	{	671	{
538	/* 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 */
539	event (EV_A_ (W)sw, EV_SIGNAL);	673	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
540		674
541	child_reap (EV_A_ sw, pid, pid, status);	675	child_reap (EV_A_ sw, pid, pid, status);
542	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 */
543	}	677	}
544	}	678	}
…		…
551	# include "ev_kqueue.c"	685	# include "ev_kqueue.c"
552	#endif	686	#endif
553	#if EV_USE_EPOLL	687	#if EV_USE_EPOLL
554	# include "ev_epoll.c"	688	# include "ev_epoll.c"
555	#endif	689	#endif
556	#if EV_USEV_POLL	690	#if EV_USE_POLL
557	# include "ev_poll.c"	691	# include "ev_poll.c"
558	#endif	692	#endif
559	#if EV_USE_SELECT	693	#if EV_USE_SELECT
560	# include "ev_select.c"	694	# include "ev_select.c"
561	#endif	695	#endif
…		…
588	ev_method (EV_P)	722	ev_method (EV_P)
589	{	723	{
590	return method;	724	return method;
591	}	725	}
592		726
593	int	727	static void
594	ev_init (EV_P_ int methods)	728	loop_init (EV_P_ int methods)
595	{	729	{
596	if (!method)	730	if (!method)
597	{	731	{
598	#if EV_USE_MONOTONIC	732	#if EV_USE_MONOTONIC
599	{	733	{
…		…
604	#endif	738	#endif
605		739
606	rt_now = ev_time ();	740	rt_now = ev_time ();
607	mn_now = get_clock ();	741	mn_now = get_clock ();
608	now_floor = mn_now;	742	now_floor = mn_now;
609	diff = rt_now - mn_now;	743	rtmn_diff = rt_now - mn_now;
610
611	if (pipe (sigpipe))
612	return 0;
613		744
614	if (methods == EVMETHOD_AUTO)	745	if (methods == EVMETHOD_AUTO)
615	if (!enable_secure () && getenv ("LIBmethodS"))	746	if (!enable_secure () && getenv ("LIBEV_METHODS"))
616	methods = atoi (getenv ("LIBmethodS"));	747	methods = atoi (getenv ("LIBEV_METHODS"));
617	else	748	else
618	methods = EVMETHOD_ANY;	749	methods = EVMETHOD_ANY;
619		750
620	method = 0;	751	method = 0;
		752	#if EV_USE_WIN32
		753	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		754	#endif
621	#if EV_USE_KQUEUE	755	#if EV_USE_KQUEUE
622	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	756	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
623	#endif	757	#endif
624	#if EV_USE_EPOLL	758	#if EV_USE_EPOLL
625	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	759	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
626	#endif	760	#endif
627	#if EV_USEV_POLL	761	#if EV_USE_POLL
628	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	762	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
629	#endif	763	#endif
630	#if EV_USE_SELECT	764	#if EV_USE_SELECT
631	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	765	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
632	#endif	766	#endif
633		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
634	if (method)	888	if (ev_method (EV_A))
635	{	889	{
636	ev_watcher_init (&sigev, sigcb);
637	ev_set_priority (&sigev, EV_MAXPRI);
638	siginit (EV_A);	890	siginit (EV_A);
639		891
640	#ifndef WIN32	892	#ifndef WIN32
641	ev_signal_init (&childev, childcb, SIGCHLD);	893	ev_signal_init (&childev, childcb, SIGCHLD);
642	ev_set_priority (&childev, EV_MAXPRI);	894	ev_set_priority (&childev, EV_MAXPRI);
643	ev_signal_start (EV_A_ &childev);	895	ev_signal_start (EV_A_ &childev);
		896	ev_unref (EV_A); /* child watcher should not keep loop alive */
644	#endif	897	#endif
645	}	898	}
		899	else
		900	default_loop = 0;
646	}	901	}
647		902
648	return method;	903	return default_loop;
		904	}
		905
		906	void
		907	ev_default_destroy (void)
		908	{
		909	#if EV_MULTIPLICITY
		910	struct ev_loop *loop = default_loop;
		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;
649	}	936	}
650		937
651	/*****************************************************************************/	938	/*****************************************************************************/
652		939
653	void	940	static int
654	ev_fork_prepare (void)	941	any_pending (EV_P)
655	{	942	{
656	/* nop */	943	int pri;
657	}
658		944
659	void	945	for (pri = NUMPRI; pri--; )
660	ev_fork_parent (void)	946	if (pendingcnt [pri])
661	{	947	return 1;
662	/* nop */
663	}
664		948
665	void	949	return 0;
666	ev_fork_child (void)
667	{
668	#if EV_USE_EPOLL
669	if (method == EVMETHOD_EPOLL)
670	epoll_postfork_child ();
671	#endif
672
673	ev_io_stop (&sigev);
674	close (sigpipe [0]);
675	close (sigpipe [1]);
676	pipe (sigpipe);
677	siginit ();
678	}	950	}
679
680	/*****************************************************************************/
681		951
682	static void	952	static void
683	call_pending (EV_P)	953	call_pending (EV_P)
684	{	954	{
685	int pri;	955	int pri;
…		…
690	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	960	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
691		961
692	if (p->w)	962	if (p->w)
693	{	963	{
694	p->w->pending = 0;	964	p->w->pending = 0;
695	p->w->cb (EV_A_ p->w, p->events);	965	EV_CB_INVOKE (p->w, p->events);
696	}	966	}
697	}	967	}
698	}	968	}
699		969
700	static void	970	static void
701	timers_reify (EV_P)	971	timers_reify (EV_P)
702	{	972	{
703	while (timercnt && timers [0]->at <= mn_now)	973	while (timercnt && ((WT)timers [0])->at <= mn_now)
704	{	974	{
705	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)));
706		978
707	/* first reschedule or stop timer */	979	/* first reschedule or stop timer */
708	if (w->repeat)	980	if (w->repeat)
709	{	981	{
710	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.));
711	w->at = mn_now + w->repeat;	983	((WT)w)->at = mn_now + w->repeat;
712	downheap ((WT *)timers, timercnt, 0);	984	downheap ((WT *)timers, timercnt, 0);
713	}	985	}
714	else	986	else
715	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	987	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
716		988
717	event ((W)w, EV_TIMEOUT);	989	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
718	}	990	}
719	}	991	}
720		992
721	static void	993	static void
722	periodics_reify (EV_P)	994	periodics_reify (EV_P)
723	{	995	{
724	while (periodiccnt && periodics [0]->at <= rt_now)	996	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
725	{	997	{
726	struct ev_periodic *w = periodics [0];	998	struct ev_periodic *w = periodics [0];
727		999
		1000	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1001
728	/* first reschedule or stop timer */	1002	/* first reschedule or stop timer */
729	if (w->interval)	1003	if (w->reschedule_cb)
730	{	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	{
731	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;
732	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));
733	downheap ((WT *)periodics, periodiccnt, 0);	1014	downheap ((WT *)periodics, periodiccnt, 0);
734	}	1015	}
735	else	1016	else
736	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1017	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
737		1018
738	event (EV_A_ (W)w, EV_PERIODIC);	1019	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
739	}	1020	}
740	}	1021	}
741		1022
742	static void	1023	static void
743	periodics_reschedule (EV_P_ ev_tstamp diff)	1024	periodics_reschedule (EV_P)
744	{	1025	{
745	int i;	1026	int i;
746		1027
747	/* adjust periodics after time jump */	1028	/* adjust periodics after time jump */
748	for (i = 0; i < periodiccnt; ++i)	1029	for (i = 0; i < periodiccnt; ++i)
749	{	1030	{
750	struct ev_periodic *w = periodics [i];	1031	struct ev_periodic *w = periodics [i];
751		1032
		1033	if (w->reschedule_cb)
		1034	((WT)w)->at = w->reschedule_cb (w, rt_now);
752	if (w->interval)	1035	else if (w->interval)
753	{
754	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;
755
756	if (fabs (diff) >= 1e-4)
757	{
758	ev_periodic_stop (EV_A_ w);
759	ev_periodic_start (EV_A_ w);
760
761	i = 0; /* restart loop, inefficient, but time jumps should be rare */
762	}
763	}
764	}	1037	}
		1038
		1039	/* now rebuild the heap */
		1040	for (i = periodiccnt >> 1; i--; )
		1041	downheap ((WT *)periodics, periodiccnt, i);
765	}	1042	}
766		1043
767	inline int	1044	inline int
768	time_update_monotonic (EV_P)	1045	time_update_monotonic (EV_P)
769	{	1046	{
770	mn_now = get_clock ();	1047	mn_now = get_clock ();
771		1048
772	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1049	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
773	{	1050	{
774	rt_now = mn_now + diff;	1051	rt_now = rtmn_diff + mn_now;
775	return 0;	1052	return 0;
776	}	1053	}
777	else	1054	else
778	{	1055	{
779	now_floor = mn_now;	1056	now_floor = mn_now;
…		…
790	#if EV_USE_MONOTONIC	1067	#if EV_USE_MONOTONIC
791	if (expect_true (have_monotonic))	1068	if (expect_true (have_monotonic))
792	{	1069	{
793	if (time_update_monotonic (EV_A))	1070	if (time_update_monotonic (EV_A))
794	{	1071	{
795	ev_tstamp odiff = diff;	1072	ev_tstamp odiff = rtmn_diff;
796		1073
797	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1074	for (i = 4; --i; ) /* loop a few times, before making important decisions */
798	{	1075	{
799	diff = rt_now - mn_now;	1076	rtmn_diff = rt_now - mn_now;
800		1077
801	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1078	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
802	return; /* all is well */	1079	return; /* all is well */
803		1080
804	rt_now = ev_time ();	1081	rt_now = ev_time ();
805	mn_now = get_clock ();	1082	mn_now = get_clock ();
806	now_floor = mn_now;	1083	now_floor = mn_now;
807	}	1084	}
808		1085
809	periodics_reschedule (EV_A_ diff - odiff);	1086	periodics_reschedule (EV_A);
810	/* no timer adjustment, as the monotonic clock doesn't jump */	1087	/* no timer adjustment, as the monotonic clock doesn't jump */
		1088	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
811	}	1089	}
812	}	1090	}
813	else	1091	else
814	#endif	1092	#endif
815	{	1093	{
816	rt_now = ev_time ();	1094	rt_now = ev_time ();
817		1095
818	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1096	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
819	{	1097	{
820	periodics_reschedule (EV_A_ rt_now - mn_now);	1098	periodics_reschedule (EV_A);
821		1099
822	/* 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 */
823	for (i = 0; i < timercnt; ++i)	1101	for (i = 0; i < timercnt; ++i)
824	timers [i]->at += diff;	1102	((WT)timers [i])->at += rt_now - mn_now;
825	}	1103	}
826		1104
827	mn_now = rt_now;	1105	mn_now = rt_now;
828	}	1106	}
829	}	1107	}
…		…
855	{	1133	{
856	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1134	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
857	call_pending (EV_A);	1135	call_pending (EV_A);
858	}	1136	}
859		1137
		1138	/* we might have forked, so reify kernel state if necessary */
		1139	if (expect_false (postfork))
		1140	loop_fork (EV_A);
		1141
860	/* update fd-related kernel structures */	1142	/* update fd-related kernel structures */
861	fd_reify (EV_A);	1143	fd_reify (EV_A);
862		1144
863	/* calculate blocking time */	1145	/* calculate blocking time */
864		1146
865	/* 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
866	always have timers, we just calculate it always */	1148	always have timers, we just calculate it always */
867	#if EV_USE_MONOTONIC	1149	#if EV_USE_MONOTONIC
868	if (expect_true (have_monotonic))	1150	if (expect_true (have_monotonic))
869	time_update_monotonic (EV_A);	1151	time_update_monotonic (EV_A);
870	else	1152	else
…		…
880	{	1162	{
881	block = MAX_BLOCKTIME;	1163	block = MAX_BLOCKTIME;
882		1164
883	if (timercnt)	1165	if (timercnt)
884	{	1166	{
885	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1167	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
886	if (block > to) block = to;	1168	if (block > to) block = to;
887	}	1169	}
888		1170
889	if (periodiccnt)	1171	if (periodiccnt)
890	{	1172	{
891	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1173	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
892	if (block > to) block = to;	1174	if (block > to) block = to;
893	}	1175	}
894		1176
895	if (block < 0.) block = 0.;	1177	if (block < 0.) block = 0.;
896	}	1178	}
…		…
903	/* queue pending timers and reschedule them */	1185	/* queue pending timers and reschedule them */
904	timers_reify (EV_A); /* relative timers called last */	1186	timers_reify (EV_A); /* relative timers called last */
905	periodics_reify (EV_A); /* absolute timers called first */	1187	periodics_reify (EV_A); /* absolute timers called first */
906		1188
907	/* queue idle watchers unless io or timers are pending */	1189	/* queue idle watchers unless io or timers are pending */
908	if (!pendingcnt)	1190	if (idlecnt && !any_pending (EV_A))
909	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1191	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
910		1192
911	/* queue check watchers, to be executed first */	1193	/* queue check watchers, to be executed first */
912	if (checkcnt)	1194	if (checkcnt)
913	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1195	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
914		1196
915	call_pending (EV_A);	1197	call_pending (EV_A);
916	printf ("activecnt %d\n", activecnt);//D
917	}	1198	}
918	while (activecnt && !loop_done);	1199	while (activecnt && !loop_done);
919		1200
920	if (loop_done != 2)	1201	if (loop_done != 2)
921	loop_done = 0;	1202	loop_done = 0;
…		…
989	return;	1270	return;
990		1271
991	assert (("ev_io_start called with negative fd", fd >= 0));	1272	assert (("ev_io_start called with negative fd", fd >= 0));
992		1273
993	ev_start (EV_A_ (W)w, 1);	1274	ev_start (EV_A_ (W)w, 1);
994	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1275	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
995	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1276	wlist_add ((WL *)&anfds[fd].head, (WL)w);
996		1277
997	fd_change (EV_A_ fd);	1278	fd_change (EV_A_ fd);
998	}	1279	}
999		1280
…		…
1014	ev_timer_start (EV_P_ struct ev_timer *w)	1295	ev_timer_start (EV_P_ struct ev_timer *w)
1015	{	1296	{
1016	if (ev_is_active (w))	1297	if (ev_is_active (w))
1017	return;	1298	return;
1018		1299
1019	w->at += mn_now;	1300	((WT)w)->at += mn_now;
1020		1301
1021	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.));
1022		1303
1023	ev_start (EV_A_ (W)w, ++timercnt);	1304	ev_start (EV_A_ (W)w, ++timercnt);
1024	array_needsize (timers, timermax, timercnt, );	1305	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1025	timers [timercnt - 1] = w;	1306	timers [timercnt - 1] = w;
1026	upheap ((WT *)timers, timercnt - 1);	1307	upheap ((WT *)timers, timercnt - 1);
		1308
		1309	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1027	}	1310	}
1028		1311
1029	void	1312	void
1030	ev_timer_stop (EV_P_ struct ev_timer *w)	1313	ev_timer_stop (EV_P_ struct ev_timer *w)
1031	{	1314	{
1032	ev_clear_pending (EV_A_ (W)w);	1315	ev_clear_pending (EV_A_ (W)w);
1033	if (!ev_is_active (w))	1316	if (!ev_is_active (w))
1034	return;	1317	return;
1035		1318
		1319	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1320
1036	if (w->active < timercnt--)	1321	if (((W)w)->active < timercnt--)
1037	{	1322	{
1038	timers [w->active - 1] = timers [timercnt];	1323	timers [((W)w)->active - 1] = timers [timercnt];
1039	downheap ((WT *)timers, timercnt, w->active - 1);	1324	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1040	}	1325	}
1041		1326
1042	w->at = w->repeat;	1327	((WT)w)->at = w->repeat;
1043		1328
1044	ev_stop (EV_A_ (W)w);	1329	ev_stop (EV_A_ (W)w);
1045	}	1330	}
1046		1331
1047	void	1332	void
1048	ev_timer_again (EV_P_ struct ev_timer *w)	1333	ev_timer_again (EV_P_ struct ev_timer *w)
1049	{	1334	{
1050	if (ev_is_active (w))	1335	if (ev_is_active (w))
1051	{	1336	{
1052	if (w->repeat)	1337	if (w->repeat)
1053	{
1054	w->at = mn_now + w->repeat;
1055	downheap ((WT *)timers, timercnt, w->active - 1);	1338	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1056	}
1057	else	1339	else
1058	ev_timer_stop (EV_A_ w);	1340	ev_timer_stop (EV_A_ w);
1059	}	1341	}
1060	else if (w->repeat)	1342	else if (w->repeat)
1061	ev_timer_start (EV_A_ w);	1343	ev_timer_start (EV_A_ w);
…		…
1065	ev_periodic_start (EV_P_ struct ev_periodic *w)	1347	ev_periodic_start (EV_P_ struct ev_periodic *w)
1066	{	1348	{
1067	if (ev_is_active (w))	1349	if (ev_is_active (w))
1068	return;	1350	return;
1069		1351
		1352	if (w->reschedule_cb)
		1353	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1354	else if (w->interval)
		1355	{
1070	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.));
1071
1072	/* 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 */
1073	if (w->interval)
1074	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	}
1075		1360
1076	ev_start (EV_A_ (W)w, ++periodiccnt);	1361	ev_start (EV_A_ (W)w, ++periodiccnt);
1077	array_needsize (periodics, periodicmax, periodiccnt, );	1362	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1078	periodics [periodiccnt - 1] = w;	1363	periodics [periodiccnt - 1] = w;
1079	upheap ((WT *)periodics, periodiccnt - 1);	1364	upheap ((WT *)periodics, periodiccnt - 1);
		1365
		1366	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1080	}	1367	}
1081		1368
1082	void	1369	void
1083	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1370	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1084	{	1371	{
1085	ev_clear_pending (EV_A_ (W)w);	1372	ev_clear_pending (EV_A_ (W)w);
1086	if (!ev_is_active (w))	1373	if (!ev_is_active (w))
1087	return;	1374	return;
1088		1375
		1376	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1377
1089	if (w->active < periodiccnt--)	1378	if (((W)w)->active < periodiccnt--)
1090	{	1379	{
1091	periodics [w->active - 1] = periodics [periodiccnt];	1380	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1092	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1381	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1093	}	1382	}
1094		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];
1095	ev_stop (EV_A_ (W)w);	1458	ev_stop (EV_A_ (W)w);
1096	}	1459	}
1097		1460
1098	#ifndef SA_RESTART	1461	#ifndef SA_RESTART
1099	# define SA_RESTART 0	1462	# define SA_RESTART 0
1100	#endif	1463	#endif
1101		1464
1102	void	1465	void
1103	ev_signal_start (EV_P_ struct ev_signal *w)	1466	ev_signal_start (EV_P_ struct ev_signal *w)
1104	{	1467	{
		1468	#if EV_MULTIPLICITY
		1469	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1470	#endif
1105	if (ev_is_active (w))	1471	if (ev_is_active (w))
1106	return;	1472	return;
1107		1473
1108	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));
1109		1475
1110	ev_start (EV_A_ (W)w, 1);	1476	ev_start (EV_A_ (W)w, 1);
1111	array_needsize (signals, signalmax, w->signum, signals_init);	1477	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1112	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1478	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1113		1479
1114	if (!w->next)	1480	if (!((WL)w)->next)
1115	{	1481	{
		1482	#if WIN32
		1483	signal (w->signum, sighandler);
		1484	#else
1116	struct sigaction sa;	1485	struct sigaction sa;
1117	sa.sa_handler = sighandler;	1486	sa.sa_handler = sighandler;
1118	sigfillset (&sa.sa_mask);	1487	sigfillset (&sa.sa_mask);
1119	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 */
1120	sigaction (w->signum, &sa, 0);	1489	sigaction (w->signum, &sa, 0);
		1490	#endif
1121	}	1491	}
1122	}	1492	}
1123		1493
1124	void	1494	void
1125	ev_signal_stop (EV_P_ struct ev_signal *w)	1495	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1134	if (!signals [w->signum - 1].head)	1504	if (!signals [w->signum - 1].head)
1135	signal (w->signum, SIG_DFL);	1505	signal (w->signum, SIG_DFL);
1136	}	1506	}
1137		1507
1138	void	1508	void
1139	ev_idle_start (EV_P_ struct ev_idle *w)
1140	{
1141	if (ev_is_active (w))
1142	return;
1143
1144	ev_start (EV_A_ (W)w, ++idlecnt);
1145	array_needsize (idles, idlemax, idlecnt, );
1146	idles [idlecnt - 1] = w;
1147	}
1148
1149	void
1150	ev_idle_stop (EV_P_ struct ev_idle *w)
1151	{
1152	ev_clear_pending (EV_A_ (W)w);
1153	if (ev_is_active (w))
1154	return;
1155
1156	idles [w->active - 1] = idles [--idlecnt];
1157	ev_stop (EV_A_ (W)w);
1158	}
1159
1160	void
1161	ev_prepare_start (EV_P_ struct ev_prepare *w)
1162	{
1163	if (ev_is_active (w))
1164	return;
1165
1166	ev_start (EV_A_ (W)w, ++preparecnt);
1167	array_needsize (prepares, preparemax, preparecnt, );
1168	prepares [preparecnt - 1] = w;
1169	}
1170
1171	void
1172	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1173	{
1174	ev_clear_pending (EV_A_ (W)w);
1175	if (ev_is_active (w))
1176	return;
1177
1178	prepares [w->active - 1] = prepares [--preparecnt];
1179	ev_stop (EV_A_ (W)w);
1180	}
1181
1182	void
1183	ev_check_start (EV_P_ struct ev_check *w)
1184	{
1185	if (ev_is_active (w))
1186	return;
1187
1188	ev_start (EV_A_ (W)w, ++checkcnt);
1189	array_needsize (checks, checkmax, checkcnt, );
1190	checks [checkcnt - 1] = w;
1191	}
1192
1193	void
1194	ev_check_stop (EV_P_ struct ev_check *w)
1195	{
1196	ev_clear_pending (EV_A_ (W)w);
1197	if (ev_is_active (w))
1198	return;
1199
1200	checks [w->active - 1] = checks [--checkcnt];
1201	ev_stop (EV_A_ (W)w);
1202	}
1203
1204	void
1205	ev_child_start (EV_P_ struct ev_child *w)	1509	ev_child_start (EV_P_ struct ev_child *w)
1206	{	1510	{
		1511	#if EV_MULTIPLICITY
		1512	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1513	#endif
1207	if (ev_is_active (w))	1514	if (ev_is_active (w))
1208	return;	1515	return;
1209		1516
1210	ev_start (EV_A_ (W)w, 1);	1517	ev_start (EV_A_ (W)w, 1);
1211	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1518	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1238	void (cb)(int revents, void arg) = once->cb;	1545	void (cb)(int revents, void arg) = once->cb;
1239	void *arg = once->arg;	1546	void *arg = once->arg;
1240		1547
1241	ev_io_stop (EV_A_ &once->io);	1548	ev_io_stop (EV_A_ &once->io);
1242	ev_timer_stop (EV_A_ &once->to);	1549	ev_timer_stop (EV_A_ &once->to);
1243	free (once);	1550	ev_free (once);
1244		1551
1245	cb (revents, arg);	1552	cb (revents, arg);
1246	}	1553	}
1247		1554
1248	static void	1555	static void
…		…
1258	}	1565	}
1259		1566
1260	void	1567	void
1261	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)
1262	{	1569	{
1263	struct ev_once *once = malloc (sizeof (struct ev_once));	1570	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1264		1571
1265	if (!once)	1572	if (!once)
1266	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1573	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1267	else	1574	else
1268	{	1575	{
1269	once->cb = cb;	1576	once->cb = cb;
1270	once->arg = arg;	1577	once->arg = arg;
1271		1578
1272	ev_watcher_init (&once->io, once_cb_io);	1579	ev_init (&once->io, once_cb_io);
1273	if (fd >= 0)	1580	if (fd >= 0)
1274	{	1581	{
1275	ev_io_set (&once->io, fd, events);	1582	ev_io_set (&once->io, fd, events);
1276	ev_io_start (EV_A_ &once->io);	1583	ev_io_start (EV_A_ &once->io);
1277	}	1584	}
1278		1585
1279	ev_watcher_init (&once->to, once_cb_to);	1586	ev_init (&once->to, once_cb_to);
1280	if (timeout >= 0.)	1587	if (timeout >= 0.)
1281	{	1588	{
1282	ev_timer_set (&once->to, timeout, 0.);	1589	ev_timer_set (&once->to, timeout, 0.);
1283	ev_timer_start (EV_A_ &once->to);	1590	ev_timer_start (EV_A_ &once->to);
1284	}	1591	}
1285	}	1592	}
1286	}	1593	}
1287		1594
1288	/*****************************************************************************/
1289
1290	#if 0
1291
1292	struct ev_io wio;
1293
1294	static void
1295	sin_cb (struct ev_io *w, int revents)
1296	{
1297	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1298	}
1299
1300	static void
1301	ocb (struct ev_timer *w, int revents)
1302	{
1303	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1304	ev_timer_stop (w);
1305	ev_timer_start (w);
1306	}
1307
1308	static void
1309	scb (struct ev_signal *w, int revents)
1310	{
1311	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1312	ev_io_stop (&wio);
1313	ev_io_start (&wio);
1314	}
1315
1316	static void
1317	gcb (struct ev_signal *w, int revents)
1318	{
1319	fprintf (stderr, "generic %x\n", revents);
1320
1321	}
1322
1323	int main (void)
1324	{
1325	ev_init (0);
1326
1327	ev_io_init (&wio, sin_cb, 0, EV_READ);
1328	ev_io_start (&wio);
1329
1330	struct ev_timer t[10000];
1331
1332	#if 0
1333	int i;
1334	for (i = 0; i < 10000; ++i)
1335	{
1336	struct ev_timer *w = t + i;
1337	ev_watcher_init (w, ocb, i);
1338	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1339	ev_timer_start (w);
1340	if (drand48 () < 0.5)
1341	ev_timer_stop (w);
1342	}
1343	#endif
1344
1345	struct ev_timer t1;
1346	ev_timer_init (&t1, ocb, 5, 10);
1347	ev_timer_start (&t1);
1348
1349	struct ev_signal sig;
1350	ev_signal_init (&sig, scb, SIGQUIT);
1351	ev_signal_start (&sig);
1352
1353	struct ev_check cw;
1354	ev_check_init (&cw, gcb);
1355	ev_check_start (&cw);
1356
1357	struct ev_idle iw;
1358	ev_idle_init (&iw, gcb);
1359	ev_idle_start (&iw);
1360
1361	ev_loop (0);
1362
1363	return 0;
1364	}
1365
1366	#endif
1367
1368
1369
1370

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Comparing libev/ev.c (file contents): Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs. Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC

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Comparing libev/ev.c (file contents):
Revision 1.51 by root, Sat Nov 3 21:58:51 2007 UTC vs.
Revision 1.84 by root, Fri Nov 9 23:04:35 2007 UTC