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Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.85 by root, Sat Nov 10 03:13:50 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
…		…
183	#endif	271	#endif
184		272
185	return ev_time ();	273	return ev_time ();
186	}	274	}
187		275
		276	#if EV_MULTIPLICITY
188	ev_tstamp	277	ev_tstamp
189	ev_now (EV_P)	278	ev_now (EV_P)
190	{	279	{
191	return rt_now;	280	return ev_rt_now;
192	}	281	}
		282	#endif
193		283
194	#define array_roundsize(base,n) ((n) | 4 & ~3)	284	#define array_roundsize(type,n) ((n) | 4 & ~3)
195		285
196	#define array_needsize(base,cur,cnt,init) \	286	#define array_needsize(type,base,cur,cnt,init) \
197	if (expect_false ((cnt) > cur)) \	287	if (expect_false ((cnt) > cur)) \
198	{ \	288	{ \
199	int newcnt = cur; \	289	int newcnt = cur; \
200	do \	290	do \
201	{ \	291	{ \
202	newcnt = array_roundsize (base, newcnt << 1); \	292	newcnt = array_roundsize (type, newcnt << 1); \
203	} \	293	} \
204	while ((cnt) > newcnt); \	294	while ((cnt) > newcnt); \
205	\	295	\
206	base = realloc (base, sizeof (*base) * (newcnt)); \	296	base = (type *)ev_realloc (base, sizeof (type) * (newcnt));\
207	init (base + cur, newcnt - cur); \	297	init (base + cur, newcnt - cur); \
208	cur = newcnt; \	298	cur = newcnt; \
209	}	299	}
		300
		301	#define array_slim(type,stem) \
		302	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		303	{ \
		304	stem ## max = array_roundsize (stem ## cnt >> 1); \
		305	base = (type *)ev_realloc (base, sizeof (type) * (stem ## max));\
		306	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/*D*/\
		307	}
		308
		309	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		310	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		311	#define array_free_microshit(stem) \
		312	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		313
		314	#define array_free(stem, idx) \
		315	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
210		316
211	/*****************************************************************************/	317	/*****************************************************************************/
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		318
223	static void	319	static void
224	anfds_init (ANFD *base, int count)	320	anfds_init (ANFD *base, int count)
225	{	321	{
226	while (count--)	322	while (count--)
…		…
231		327
232	++base;	328	++base;
233	}	329	}
234	}	330	}
235		331
236	typedef struct	332	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)	333	ev_feed_event (EV_P_ void *w, int revents)
247	{	334	{
		335	W w_ = (W)w;
		336
248	if (w->pending)	337	if (w_->pending)
249	{	338	{
250	pendings [ABSPRI (w)][w->pending - 1].events |= events;	339	pendings [ABSPRI (w_)][w_->pending - 1].events |= revents;
251	return;	340	return;
252	}	341	}
253		342
254	w->pending = ++pendingcnt [ABSPRI (w)];	343	w_->pending = ++pendingcnt [ABSPRI (w_)];
255	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	344	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
256	pendings [ABSPRI (w)][w->pending - 1].w = w;	345	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
257	pendings [ABSPRI (w)][w->pending - 1].events = events;	346	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
258	}	347	}
259		348
260	static void	349	static void
261	queue_events (EV_P_ W *events, int eventcnt, int type)	350	queue_events (EV_P_ W *events, int eventcnt, int type)
262	{	351	{
263	int i;	352	int i;
264		353
265	for (i = 0; i < eventcnt; ++i)	354	for (i = 0; i < eventcnt; ++i)
266	event (EV_A_ events [i], type);	355	ev_feed_event (EV_A_ events [i], type);
267	}	356	}
268		357
269	static void	358	inline void
270	fd_event (EV_P_ int fd, int events)	359	fd_event (EV_P_ int fd, int revents)
271	{	360	{
272	ANFD *anfd = anfds + fd;	361	ANFD *anfd = anfds + fd;
273	struct ev_io *w;	362	struct ev_io *w;
274		363
275	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	364	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
276	{	365	{
277	int ev = w->events & events;	366	int ev = w->events & revents;
278		367
279	if (ev)	368	if (ev)
280	event (EV_A_ (W)w, ev);	369	ev_feed_event (EV_A_ (W)w, ev);
281	}	370	}
		371	}
		372
		373	void
		374	ev_feed_fd_event (EV_P_ int fd, int revents)
		375	{
		376	fd_event (EV_A_ fd, revents);
282	}	377	}
283		378
284	/*****************************************************************************/	379	/*****************************************************************************/
285
286	static int *fdchanges;
287	static int fdchangemax, fdchangecnt;
288		380
289	static void	381	static void
290	fd_reify (EV_P)	382	fd_reify (EV_P)
291	{	383	{
292	int i;	384	int i;
…		…
302	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)	394	for (w = (struct ev_io *)anfd->head; w; w = (struct ev_io *)((WL)w)->next)
303	events |= w->events;	395	events |= w->events;
304		396
305	anfd->reify = 0;	397	anfd->reify = 0;
306		398
307	if (anfd->events != events)
308	{
309	method_modify (EV_A_ fd, anfd->events, events);	399	method_modify (EV_A_ fd, anfd->events, events);
310	anfd->events = events;	400	anfd->events = events;
311	}
312	}	401	}
313		402
314	fdchangecnt = 0;	403	fdchangecnt = 0;
315	}	404	}
316		405
317	static void	406	static void
318	fd_change (EV_P_ int fd)	407	fd_change (EV_P_ int fd)
319	{	408	{
320	if (anfds [fd].reify || fdchangecnt < 0)	409	if (anfds [fd].reify)
321	return;	410	return;
322		411
323	anfds [fd].reify = 1;	412	anfds [fd].reify = 1;
324		413
325	++fdchangecnt;	414	++fdchangecnt;
326	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	415	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
327	fdchanges [fdchangecnt - 1] = fd;	416	fdchanges [fdchangecnt - 1] = fd;
328	}	417	}
329		418
330	static void	419	static void
331	fd_kill (EV_P_ int fd)	420	fd_kill (EV_P_ int fd)
…		…
333	struct ev_io *w;	422	struct ev_io *w;
334		423
335	while ((w = (struct ev_io *)anfds [fd].head))	424	while ((w = (struct ev_io *)anfds [fd].head))
336	{	425	{
337	ev_io_stop (EV_A_ w);	426	ev_io_stop (EV_A_ w);
338	event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);	427	ev_feed_event (EV_A_ (W)w, EV_ERROR | EV_READ | EV_WRITE);
339	}	428	}
		429	}
		430
		431	static int
		432	fd_valid (int fd)
		433	{
		434	#ifdef WIN32
		435	return !!win32_get_osfhandle (fd);
		436	#else
		437	return fcntl (fd, F_GETFD) != -1;
		438	#endif
340	}	439	}
341		440
342	/* called on EBADF to verify fds */	441	/* called on EBADF to verify fds */
343	static void	442	static void
344	fd_ebadf (EV_P)	443	fd_ebadf (EV_P)
345	{	444	{
346	int fd;	445	int fd;
347		446
348	for (fd = 0; fd < anfdmax; ++fd)	447	for (fd = 0; fd < anfdmax; ++fd)
349	if (anfds [fd].events)	448	if (anfds [fd].events)
350	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	449	if (!fd_valid (fd) == -1 && errno == EBADF)
351	fd_kill (EV_A_ fd);	450	fd_kill (EV_A_ fd);
352	}	451	}
353		452
354	/* called on ENOMEM in select/poll to kill some fds and retry */	453	/* called on ENOMEM in select/poll to kill some fds and retry */
355	static void	454	static void
356	fd_enomem (EV_P)	455	fd_enomem (EV_P)
357	{	456	{
358	int fd = anfdmax;	457	int fd;
359		458
360	while (fd--)	459	for (fd = anfdmax; fd--; )
361	if (anfds [fd].events)	460	if (anfds [fd].events)
362	{	461	{
363	close (fd);
364	fd_kill (EV_A_ fd);	462	fd_kill (EV_A_ fd);
365	return;	463	return;
366	}	464	}
367	}	465	}
368		466
		467	/* usually called after fork if method needs to re-arm all fds from scratch */
		468	static void
		469	fd_rearm_all (EV_P)
		470	{
		471	int fd;
		472
		473	/* this should be highly optimised to not do anything but set a flag */
		474	for (fd = 0; fd < anfdmax; ++fd)
		475	if (anfds [fd].events)
		476	{
		477	anfds [fd].events = 0;
		478	fd_change (EV_A_ fd);
		479	}
		480	}
		481
369	/*****************************************************************************/	482	/*****************************************************************************/
370		483
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	484	static void
378	upheap (WT *timers, int k)	485	upheap (WT *heap, int k)
379	{	486	{
380	WT w = timers [k];	487	WT w = heap [k];
381		488
382	while (k && timers [k >> 1]->at > w->at)	489	while (k && heap [k >> 1]->at > w->at)
383	{	490	{
384	timers [k] = timers [k >> 1];	491	heap [k] = heap [k >> 1];
385	timers [k]->active = k + 1;	492	((W)heap [k])->active = k + 1;
386	k >>= 1;	493	k >>= 1;
387	}	494	}
388		495
389	timers [k] = w;	496	heap [k] = w;
390	timers [k]->active = k + 1;	497	((W)heap [k])->active = k + 1;
391		498
392	}	499	}
393		500
394	static void	501	static void
395	downheap (WT *timers, int N, int k)	502	downheap (WT *heap, int N, int k)
396	{	503	{
397	WT w = timers [k];	504	WT w = heap [k];
398		505
399	while (k < (N >> 1))	506	while (k < (N >> 1))
400	{	507	{
401	int j = k << 1;	508	int j = k << 1;
402		509
403	if (j + 1 < N && timers [j]->at > timers [j + 1]->at)	510	if (j + 1 < N && heap [j]->at > heap [j + 1]->at)
404	++j;	511	++j;
405		512
406	if (w->at <= timers [j]->at)	513	if (w->at <= heap [j]->at)
407	break;	514	break;
408		515
409	timers [k] = timers [j];	516	heap [k] = heap [j];
410	timers [k]->active = k + 1;	517	((W)heap [k])->active = k + 1;
411	k = j;	518	k = j;
412	}	519	}
413		520
414	timers [k] = w;	521	heap [k] = w;
415	timers [k]->active = k + 1;	522	((W)heap [k])->active = k + 1;
		523	}
		524
		525	inline void
		526	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		527	{
		528	ev_tstamp old_at = heap [k]->at;
		529	heap [k]->at = at;
		530
		531	if (old_at < at)
		532	downheap (heap, N, k);
		533	else
		534	upheap (heap, k);
416	}	535	}
417		536
418	/*****************************************************************************/	537	/*****************************************************************************/
419		538
420	typedef struct	539	typedef struct
421	{	540	{
422	struct ev_watcher_list *head;	541	WL head;
423	sig_atomic_t volatile gotsig;	542	sig_atomic_t volatile gotsig;
424	} ANSIG;	543	} ANSIG;
425		544
426	static ANSIG *signals;	545	static ANSIG *signals;
427	static int signalmax;	546	static int signalmax;
…		…
443	}	562	}
444		563
445	static void	564	static void
446	sighandler (int signum)	565	sighandler (int signum)
447	{	566	{
		567	#if WIN32
		568	signal (signum, sighandler);
		569	#endif
		570
448	signals [signum - 1].gotsig = 1;	571	signals [signum - 1].gotsig = 1;
449		572
450	if (!gotsig)	573	if (!gotsig)
451	{	574	{
452	int old_errno = errno;	575	int old_errno = errno;
453	gotsig = 1;	576	gotsig = 1;
		577	#ifdef WIN32
		578	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		579	#else
454	write (sigpipe [1], &signum, 1);	580	write (sigpipe [1], &signum, 1);
		581	#endif
455	errno = old_errno;	582	errno = old_errno;
456	}	583	}
457	}	584	}
458		585
		586	void
		587	ev_feed_signal_event (EV_P_ int signum)
		588	{
		589	WL w;
		590
		591	#if EV_MULTIPLICITY
		592	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		593	#endif
		594
		595	--signum;
		596
		597	if (signum < 0 || signum >= signalmax)
		598	return;
		599
		600	signals [signum].gotsig = 0;
		601
		602	for (w = signals [signum].head; w; w = w->next)
		603	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		604	}
		605
459	static void	606	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	607	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	608	{
462	struct ev_watcher_list *w;
463	int signum;	609	int signum;
464		610
		611	#ifdef WIN32
		612	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		613	#else
465	read (sigpipe [0], &revents, 1);	614	read (sigpipe [0], &revents, 1);
		615	#endif
466	gotsig = 0;	616	gotsig = 0;
467		617
468	for (signum = signalmax; signum--; )	618	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	619	if (signals [signum].gotsig)
470	{	620	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	}	621	}
477		622
478	static void	623	static void
479	siginit (EV_P)	624	siginit (EV_P)
480	{	625	{
…		…
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	631	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	632	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif	633	#endif
489		634
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	635	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	636	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	637	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	638	}
494		639
495	/*****************************************************************************/	640	/*****************************************************************************/
496		641
497	static struct ev_idle **idles;
498	static int idlemax, idlecnt;
499
500	static struct ev_prepare **prepares;
501	static int preparemax, preparecnt;
502
503	static struct ev_check **checks;
504	static int checkmax, checkcnt;
505
506	/*****************************************************************************/
507
508	static struct ev_child *childs [PID_HASHSIZE];	642	static struct ev_child *childs [PID_HASHSIZE];
		643
		644	#ifndef WIN32
		645
509	static struct ev_signal childev;	646	static struct ev_signal childev;
510
511	#ifndef WIN32
512		647
513	#ifndef WCONTINUED	648	#ifndef WCONTINUED
514	# define WCONTINUED 0	649	# define WCONTINUED 0
515	#endif	650	#endif
516		651
…		…
520	struct ev_child *w;	655	struct ev_child *w;
521		656
522	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)	657	for (w = (struct ev_child *)childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child *)((WL)w)->next)
523	if (w->pid == pid || !w->pid)	658	if (w->pid == pid || !w->pid)
524	{	659	{
525	w->priority = sw->priority; /* need to do it *now* */	660	ev_priority (w) = ev_priority (sw); /* need to do it *now* */
526	w->rpid = pid;	661	w->rpid = pid;
527	w->rstatus = status;	662	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	663	ev_feed_event (EV_A_ (W)w, EV_CHILD);
529	}	664	}
530	}	665	}
531		666
532	static void	667	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	668	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
535	int pid, status;	670	int pid, status;
536		671
537	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))	672	if (0 < (pid = waitpid (-1, &status, WNOHANG | WUNTRACED | WCONTINUED)))
538	{	673	{
539	/* make sure we are called again until all childs have been reaped */	674	/* make sure we are called again until all childs have been reaped */
540	event (EV_A_ (W)sw, EV_SIGNAL);	675	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		676
542	child_reap (EV_A_ sw, pid, pid, status);	677	child_reap (EV_A_ sw, pid, pid, status);
543	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	678	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
544	}	679	}
545	}	680	}
…		…
552	# include "ev_kqueue.c"	687	# include "ev_kqueue.c"
553	#endif	688	#endif
554	#if EV_USE_EPOLL	689	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	690	# include "ev_epoll.c"
556	#endif	691	#endif
557	#if EV_USEV_POLL	692	#if EV_USE_POLL
558	# include "ev_poll.c"	693	# include "ev_poll.c"
559	#endif	694	#endif
560	#if EV_USE_SELECT	695	#if EV_USE_SELECT
561	# include "ev_select.c"	696	# include "ev_select.c"
562	#endif	697	#endif
…		…
589	ev_method (EV_P)	724	ev_method (EV_P)
590	{	725	{
591	return method;	726	return method;
592	}	727	}
593		728
594	int	729	static void
595	ev_init (EV_P_ int methods)	730	loop_init (EV_P_ int methods)
596	{	731	{
597	if (!method)	732	if (!method)
598	{	733	{
599	#if EV_USE_MONOTONIC	734	#if EV_USE_MONOTONIC
600	{	735	{
…		…
602	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	737	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
603	have_monotonic = 1;	738	have_monotonic = 1;
604	}	739	}
605	#endif	740	#endif
606		741
607	rt_now = ev_time ();	742	ev_rt_now = ev_time ();
608	mn_now = get_clock ();	743	mn_now = get_clock ();
609	now_floor = mn_now;	744	now_floor = mn_now;
610	diff = rt_now - mn_now;	745	rtmn_diff = ev_rt_now - mn_now;
611
612	if (pipe (sigpipe))
613	return 0;
614		746
615	if (methods == EVMETHOD_AUTO)	747	if (methods == EVMETHOD_AUTO)
616	if (!enable_secure () && getenv ("LIBmethodS"))	748	if (!enable_secure () && getenv ("LIBEV_METHODS"))
617	methods = atoi (getenv ("LIBmethodS"));	749	methods = atoi (getenv ("LIBEV_METHODS"));
618	else	750	else
619	methods = EVMETHOD_ANY;	751	methods = EVMETHOD_ANY;
620		752
621	method = 0;	753	method = 0;
		754	#if EV_USE_WIN32
		755	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		756	#endif
622	#if EV_USE_KQUEUE	757	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	758	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
624	#endif	759	#endif
625	#if EV_USE_EPOLL	760	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	761	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
627	#endif	762	#endif
628	#if EV_USEV_POLL	763	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	764	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
630	#endif	765	#endif
631	#if EV_USE_SELECT	766	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	767	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
633	#endif	768	#endif
634		769
		770	ev_init (&sigev, sigcb);
		771	ev_set_priority (&sigev, EV_MAXPRI);
		772	}
		773	}
		774
		775	void
		776	loop_destroy (EV_P)
		777	{
		778	int i;
		779
		780	#if EV_USE_WIN32
		781	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		782	#endif
		783	#if EV_USE_KQUEUE
		784	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		785	#endif
		786	#if EV_USE_EPOLL
		787	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		788	#endif
		789	#if EV_USE_POLL
		790	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		791	#endif
		792	#if EV_USE_SELECT
		793	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		794	#endif
		795
		796	for (i = NUMPRI; i--; )
		797	array_free (pending, [i]);
		798
		799	/* have to use the microsoft-never-gets-it-right macro */
		800	array_free_microshit (fdchange);
		801	array_free_microshit (timer);
		802	array_free_microshit (periodic);
		803	array_free_microshit (idle);
		804	array_free_microshit (prepare);
		805	array_free_microshit (check);
		806
		807	method = 0;
		808	}
		809
		810	static void
		811	loop_fork (EV_P)
		812	{
		813	#if EV_USE_EPOLL
		814	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		815	#endif
		816	#if EV_USE_KQUEUE
		817	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		818	#endif
		819
		820	if (ev_is_active (&sigev))
		821	{
		822	/* default loop */
		823
		824	ev_ref (EV_A);
		825	ev_io_stop (EV_A_ &sigev);
		826	close (sigpipe [0]);
		827	close (sigpipe [1]);
		828
		829	while (pipe (sigpipe))
		830	syserr ("(libev) error creating pipe");
		831
		832	siginit (EV_A);
		833	}
		834
		835	postfork = 0;
		836	}
		837
		838	#if EV_MULTIPLICITY
		839	struct ev_loop *
		840	ev_loop_new (int methods)
		841	{
		842	struct ev_loop *loop = (struct ev_loop *)ev_malloc (sizeof (struct ev_loop));
		843
		844	memset (loop, 0, sizeof (struct ev_loop));
		845
		846	loop_init (EV_A_ methods);
		847
		848	if (ev_method (EV_A))
		849	return loop;
		850
		851	return 0;
		852	}
		853
		854	void
		855	ev_loop_destroy (EV_P)
		856	{
		857	loop_destroy (EV_A);
		858	ev_free (loop);
		859	}
		860
		861	void
		862	ev_loop_fork (EV_P)
		863	{
		864	postfork = 1;
		865	}
		866
		867	#endif
		868
		869	#if EV_MULTIPLICITY
		870	struct ev_loop *
		871	#else
		872	int
		873	#endif
		874	ev_default_loop (int methods)
		875	{
		876	if (sigpipe [0] == sigpipe [1])
		877	if (pipe (sigpipe))
		878	return 0;
		879
		880	if (!default_loop)
		881	{
		882	#if EV_MULTIPLICITY
		883	struct ev_loop *loop = default_loop = &default_loop_struct;
		884	#else
		885	default_loop = 1;
		886	#endif
		887
		888	loop_init (EV_A_ methods);
		889
635	if (method)	890	if (ev_method (EV_A))
636	{	891	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	892	siginit (EV_A);
640		893
641	#ifndef WIN32	894	#ifndef WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	895	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	896	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	897	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	898	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	899	#endif
647	}	900	}
		901	else
		902	default_loop = 0;
648	}	903	}
649		904
650	return method;	905	return default_loop;
		906	}
		907
		908	void
		909	ev_default_destroy (void)
		910	{
		911	#if EV_MULTIPLICITY
		912	struct ev_loop *loop = default_loop;
		913	#endif
		914
		915	#ifndef WIN32
		916	ev_ref (EV_A); /* child watcher */
		917	ev_signal_stop (EV_A_ &childev);
		918	#endif
		919
		920	ev_ref (EV_A); /* signal watcher */
		921	ev_io_stop (EV_A_ &sigev);
		922
		923	close (sigpipe [0]); sigpipe [0] = 0;
		924	close (sigpipe [1]); sigpipe [1] = 0;
		925
		926	loop_destroy (EV_A);
		927	}
		928
		929	void
		930	ev_default_fork (void)
		931	{
		932	#if EV_MULTIPLICITY
		933	struct ev_loop *loop = default_loop;
		934	#endif
		935
		936	if (method)
		937	postfork = 1;
651	}	938	}
652		939
653	/*****************************************************************************/	940	/*****************************************************************************/
654		941
655	void	942	static int
656	ev_fork_prepare (void)	943	any_pending (EV_P)
657	{	944	{
658	/* nop */	945	int pri;
659	}
660		946
661	void	947	for (pri = NUMPRI; pri--; )
662	ev_fork_parent (void)	948	if (pendingcnt [pri])
663	{	949	return 1;
664	/* nop */
665	}
666		950
667	void	951	return 0;
668	ev_fork_child (void)
669	{
670	#if EV_USE_EPOLL
671	if (method == EVMETHOD_EPOLL)
672	epoll_postfork_child ();
673	#endif
674
675	ev_io_stop (&sigev);
676	close (sigpipe [0]);
677	close (sigpipe [1]);
678	pipe (sigpipe);
679	siginit ();
680	}	952	}
681
682	/*****************************************************************************/
683		953
684	static void	954	static void
685	call_pending (EV_P)	955	call_pending (EV_P)
686	{	956	{
687	int pri;	957	int pri;
…		…
692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	962	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693		963
694	if (p->w)	964	if (p->w)
695	{	965	{
696	p->w->pending = 0;	966	p->w->pending = 0;
697	p->w->cb (EV_A_ p->w, p->events);	967	EV_CB_INVOKE (p->w, p->events);
698	}	968	}
699	}	969	}
700	}	970	}
701		971
702	static void	972	static void
703	timers_reify (EV_P)	973	timers_reify (EV_P)
704	{	974	{
705	while (timercnt && timers [0]->at <= mn_now)	975	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	976	{
707	struct ev_timer *w = timers [0];	977	struct ev_timer *w = timers [0];
		978
		979	assert (("inactive timer on timer heap detected", ev_is_active (w)));
708		980
709	/* first reschedule or stop timer */	981	/* first reschedule or stop timer */
710	if (w->repeat)	982	if (w->repeat)
711	{	983	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	984	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
713	w->at = mn_now + w->repeat;	985	((WT)w)->at = mn_now + w->repeat;
714	downheap ((WT *)timers, timercnt, 0);	986	downheap ((WT *)timers, timercnt, 0);
715	}	987	}
716	else	988	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	989	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		990
719	event ((W)w, EV_TIMEOUT);	991	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	992	}
721	}	993	}
722		994
723	static void	995	static void
724	periodics_reify (EV_P)	996	periodics_reify (EV_P)
725	{	997	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	998	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
727	{	999	{
728	struct ev_periodic *w = periodics [0];	1000	struct ev_periodic *w = periodics [0];
729		1001
		1002	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1003
730	/* first reschedule or stop timer */	1004	/* first reschedule or stop timer */
731	if (w->interval)	1005	if (w->reschedule_cb)
732	{	1006	{
		1007	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1008
		1009	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1010	downheap ((WT *)periodics, periodiccnt, 0);
		1011	}
		1012	else if (w->interval)
		1013	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1014	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1015	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	1016	downheap ((WT *)periodics, periodiccnt, 0);
736	}	1017	}
737	else	1018	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1019	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1020
740	event (EV_A_ (W)w, EV_PERIODIC);	1021	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1022	}
742	}	1023	}
743		1024
744	static void	1025	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1026	periodics_reschedule (EV_P)
746	{	1027	{
747	int i;	1028	int i;
748		1029
749	/* adjust periodics after time jump */	1030	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1031	for (i = 0; i < periodiccnt; ++i)
751	{	1032	{
752	struct ev_periodic *w = periodics [i];	1033	struct ev_periodic *w = periodics [i];
753		1034
		1035	if (w->reschedule_cb)
		1036	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
754	if (w->interval)	1037	else if (w->interval)
755	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1038	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
757
758	if (fabs (diff) >= 1e-4)
759	{
760	ev_periodic_stop (EV_A_ w);
761	ev_periodic_start (EV_A_ w);
762
763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
764	}
765	}
766	}	1039	}
		1040
		1041	/* now rebuild the heap */
		1042	for (i = periodiccnt >> 1; i--; )
		1043	downheap ((WT *)periodics, periodiccnt, i);
767	}	1044	}
768		1045
769	inline int	1046	inline int
770	time_update_monotonic (EV_P)	1047	time_update_monotonic (EV_P)
771	{	1048	{
772	mn_now = get_clock ();	1049	mn_now = get_clock ();
773		1050
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1051	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1052	{
776	rt_now = mn_now + diff;	1053	ev_rt_now = rtmn_diff + mn_now;
777	return 0;	1054	return 0;
778	}	1055	}
779	else	1056	else
780	{	1057	{
781	now_floor = mn_now;	1058	now_floor = mn_now;
782	rt_now = ev_time ();	1059	ev_rt_now = ev_time ();
783	return 1;	1060	return 1;
784	}	1061	}
785	}	1062	}
786		1063
787	static void	1064	static void
…		…
792	#if EV_USE_MONOTONIC	1069	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1070	if (expect_true (have_monotonic))
794	{	1071	{
795	if (time_update_monotonic (EV_A))	1072	if (time_update_monotonic (EV_A))
796	{	1073	{
797	ev_tstamp odiff = diff;	1074	ev_tstamp odiff = rtmn_diff;
798		1075
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1076	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{	1077	{
801	diff = rt_now - mn_now;	1078	rtmn_diff = ev_rt_now - mn_now;
802		1079
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1080	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1081	return; /* all is well */
805		1082
806	rt_now = ev_time ();	1083	ev_rt_now = ev_time ();
807	mn_now = get_clock ();	1084	mn_now = get_clock ();
808	now_floor = mn_now;	1085	now_floor = mn_now;
809	}	1086	}
810		1087
811	periodics_reschedule (EV_A_ diff - odiff);	1088	periodics_reschedule (EV_A);
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1089	/* no timer adjustment, as the monotonic clock doesn't jump */
		1090	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1091	}
814	}	1092	}
815	else	1093	else
816	#endif	1094	#endif
817	{	1095	{
818	rt_now = ev_time ();	1096	ev_rt_now = ev_time ();
819		1097
820	if (expect_false (mn_now > rt_now || mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1098	if (expect_false (mn_now > ev_rt_now || mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1099	{
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1100	periodics_reschedule (EV_A);
823		1101
824	/* adjust timers. this is easy, as the offset is the same for all */	1102	/* adjust timers. this is easy, as the offset is the same for all */
825	for (i = 0; i < timercnt; ++i)	1103	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1104	((WT)timers [i])->at += ev_rt_now - mn_now;
827	}	1105	}
828		1106
829	mn_now = rt_now;	1107	mn_now = ev_rt_now;
830	}	1108	}
831	}	1109	}
832		1110
833	void	1111	void
834	ev_ref (EV_P)	1112	ev_ref (EV_P)
…		…
857	{	1135	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1136	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1137	call_pending (EV_A);
860	}	1138	}
861		1139
		1140	/* we might have forked, so reify kernel state if necessary */
		1141	if (expect_false (postfork))
		1142	loop_fork (EV_A);
		1143
862	/* update fd-related kernel structures */	1144	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1145	fd_reify (EV_A);
864		1146
865	/* calculate blocking time */	1147	/* calculate blocking time */
866		1148
867	/* we only need this for !monotonic clockor timers, but as we basically	1149	/* we only need this for !monotonic clock or timers, but as we basically
868	always have timers, we just calculate it always */	1150	always have timers, we just calculate it always */
869	#if EV_USE_MONOTONIC	1151	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1152	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1153	time_update_monotonic (EV_A);
872	else	1154	else
873	#endif	1155	#endif
874	{	1156	{
875	rt_now = ev_time ();	1157	ev_rt_now = ev_time ();
876	mn_now = rt_now;	1158	mn_now = ev_rt_now;
877	}	1159	}
878		1160
879	if (flags & EVLOOP_NONBLOCK || idlecnt)	1161	if (flags & EVLOOP_NONBLOCK || idlecnt)
880	block = 0.;	1162	block = 0.;
881	else	1163	else
882	{	1164	{
883	block = MAX_BLOCKTIME;	1165	block = MAX_BLOCKTIME;
884		1166
885	if (timercnt)	1167	if (timercnt)
886	{	1168	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1169	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888	if (block > to) block = to;	1170	if (block > to) block = to;
889	}	1171	}
890		1172
891	if (periodiccnt)	1173	if (periodiccnt)
892	{	1174	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1175	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
894	if (block > to) block = to;	1176	if (block > to) block = to;
895	}	1177	}
896		1178
897	if (block < 0.) block = 0.;	1179	if (block < 0.) block = 0.;
898	}	1180	}
899		1181
900	method_poll (EV_A_ block);	1182	method_poll (EV_A_ block);
901		1183
902	/* update rt_now, do magic */	1184	/* update ev_rt_now, do magic */
903	time_update (EV_A);	1185	time_update (EV_A);
904		1186
905	/* queue pending timers and reschedule them */	1187	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1188	timers_reify (EV_A); /* relative timers called last */
907	periodics_reify (EV_A); /* absolute timers called first */	1189	periodics_reify (EV_A); /* absolute timers called first */
908		1190
909	/* queue idle watchers unless io or timers are pending */	1191	/* queue idle watchers unless io or timers are pending */
910	if (!pendingcnt)	1192	if (idlecnt && !any_pending (EV_A))
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1193	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912		1194
913	/* queue check watchers, to be executed first */	1195	/* queue check watchers, to be executed first */
914	if (checkcnt)	1196	if (checkcnt)
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1197	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
990	return;	1272	return;
991		1273
992	assert (("ev_io_start called with negative fd", fd >= 0));	1274	assert (("ev_io_start called with negative fd", fd >= 0));
993		1275
994	ev_start (EV_A_ (W)w, 1);	1276	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1277	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1278	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1279
998	fd_change (EV_A_ fd);	1280	fd_change (EV_A_ fd);
999	}	1281	}
1000		1282
…		…
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1297	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1298	{
1017	if (ev_is_active (w))	1299	if (ev_is_active (w))
1018	return;	1300	return;
1019		1301
1020	w->at += mn_now;	1302	((WT)w)->at += mn_now;
1021		1303
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1304	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1305
1024	ev_start (EV_A_ (W)w, ++timercnt);	1306	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1307	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1026	timers [timercnt - 1] = w;	1308	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1309	upheap ((WT *)timers, timercnt - 1);
		1310
		1311	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1312	}
1029		1313
1030	void	1314	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1315	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1316	{
1033	ev_clear_pending (EV_A_ (W)w);	1317	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1318	if (!ev_is_active (w))
1035	return;	1319	return;
1036		1320
		1321	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1322
1037	if (w->active < timercnt--)	1323	if (((W)w)->active < timercnt--)
1038	{	1324	{
1039	timers [w->active - 1] = timers [timercnt];	1325	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1326	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1327	}
1042		1328
1043	w->at = w->repeat;	1329	((WT)w)->at = w->repeat;
1044		1330
1045	ev_stop (EV_A_ (W)w);	1331	ev_stop (EV_A_ (W)w);
1046	}	1332	}
1047		1333
1048	void	1334	void
1049	ev_timer_again (EV_P_ struct ev_timer *w)	1335	ev_timer_again (EV_P_ struct ev_timer *w)
1050	{	1336	{
1051	if (ev_is_active (w))	1337	if (ev_is_active (w))
1052	{	1338	{
1053	if (w->repeat)	1339	if (w->repeat)
1054	{
1055	w->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1340	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1057	}
1058	else	1341	else
1059	ev_timer_stop (EV_A_ w);	1342	ev_timer_stop (EV_A_ w);
1060	}	1343	}
1061	else if (w->repeat)	1344	else if (w->repeat)
1062	ev_timer_start (EV_A_ w);	1345	ev_timer_start (EV_A_ w);
…		…
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1349	ev_periodic_start (EV_P_ struct ev_periodic *w)
1067	{	1350	{
1068	if (ev_is_active (w))	1351	if (ev_is_active (w))
1069	return;	1352	return;
1070		1353
		1354	if (w->reschedule_cb)
		1355	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1356	else if (w->interval)
		1357	{
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1358	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1072
1073	/* this formula differs from the one in periodic_reify because we do not always round up */	1359	/* this formula differs from the one in periodic_reify because we do not always round up */
1074	if (w->interval)
1075	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1360	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1361	}
1076		1362
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1363	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1364	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1079	periodics [periodiccnt - 1] = w;	1365	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1366	upheap ((WT *)periodics, periodiccnt - 1);
		1367
		1368	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1369	}
1082		1370
1083	void	1371	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1372	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1373	{
1086	ev_clear_pending (EV_A_ (W)w);	1374	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1375	if (!ev_is_active (w))
1088	return;	1376	return;
1089		1377
		1378	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1379
1090	if (w->active < periodiccnt--)	1380	if (((W)w)->active < periodiccnt--)
1091	{	1381	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1382	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1383	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1384	}
1095		1385
		1386	ev_stop (EV_A_ (W)w);
		1387	}
		1388
		1389	void
		1390	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1391	{
		1392	/* TODO: use adjustheap and recalculation */
		1393	ev_periodic_stop (EV_A_ w);
		1394	ev_periodic_start (EV_A_ w);
		1395	}
		1396
		1397	void
		1398	ev_idle_start (EV_P_ struct ev_idle *w)
		1399	{
		1400	if (ev_is_active (w))
		1401	return;
		1402
		1403	ev_start (EV_A_ (W)w, ++idlecnt);
		1404	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1405	idles [idlecnt - 1] = w;
		1406	}
		1407
		1408	void
		1409	ev_idle_stop (EV_P_ struct ev_idle *w)
		1410	{
		1411	ev_clear_pending (EV_A_ (W)w);
		1412	if (ev_is_active (w))
		1413	return;
		1414
		1415	idles [((W)w)->active - 1] = idles [--idlecnt];
		1416	ev_stop (EV_A_ (W)w);
		1417	}
		1418
		1419	void
		1420	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1421	{
		1422	if (ev_is_active (w))
		1423	return;
		1424
		1425	ev_start (EV_A_ (W)w, ++preparecnt);
		1426	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1427	prepares [preparecnt - 1] = w;
		1428	}
		1429
		1430	void
		1431	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1432	{
		1433	ev_clear_pending (EV_A_ (W)w);
		1434	if (ev_is_active (w))
		1435	return;
		1436
		1437	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1438	ev_stop (EV_A_ (W)w);
		1439	}
		1440
		1441	void
		1442	ev_check_start (EV_P_ struct ev_check *w)
		1443	{
		1444	if (ev_is_active (w))
		1445	return;
		1446
		1447	ev_start (EV_A_ (W)w, ++checkcnt);
		1448	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1449	checks [checkcnt - 1] = w;
		1450	}
		1451
		1452	void
		1453	ev_check_stop (EV_P_ struct ev_check *w)
		1454	{
		1455	ev_clear_pending (EV_A_ (W)w);
		1456	if (ev_is_active (w))
		1457	return;
		1458
		1459	checks [((W)w)->active - 1] = checks [--checkcnt];
1096	ev_stop (EV_A_ (W)w);	1460	ev_stop (EV_A_ (W)w);
1097	}	1461	}
1098		1462
1099	#ifndef SA_RESTART	1463	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1464	# define SA_RESTART 0
1101	#endif	1465	#endif
1102		1466
1103	void	1467	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1468	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1469	{
		1470	#if EV_MULTIPLICITY
		1471	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1472	#endif
1106	if (ev_is_active (w))	1473	if (ev_is_active (w))
1107	return;	1474	return;
1108		1475
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1476	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1477
1111	ev_start (EV_A_ (W)w, 1);	1478	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1479	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1480	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1481
1115	if (!w->next)	1482	if (!((WL)w)->next)
1116	{	1483	{
		1484	#if WIN32
		1485	signal (w->signum, sighandler);
		1486	#else
1117	struct sigaction sa;	1487	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1488	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1489	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1490	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1491	sigaction (w->signum, &sa, 0);
		1492	#endif
1122	}	1493	}
1123	}	1494	}
1124		1495
1125	void	1496	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1497	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1135	if (!signals [w->signum - 1].head)	1506	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1507	signal (w->signum, SIG_DFL);
1137	}	1508	}
1138		1509
1139	void	1510	void
1140	ev_idle_start (EV_P_ struct ev_idle *w)
1141	{
1142	if (ev_is_active (w))
1143	return;
1144
1145	ev_start (EV_A_ (W)w, ++idlecnt);
1146	array_needsize (idles, idlemax, idlecnt, );
1147	idles [idlecnt - 1] = w;
1148	}
1149
1150	void
1151	ev_idle_stop (EV_P_ struct ev_idle *w)
1152	{
1153	ev_clear_pending (EV_A_ (W)w);
1154	if (ev_is_active (w))
1155	return;
1156
1157	idles [w->active - 1] = idles [--idlecnt];
1158	ev_stop (EV_A_ (W)w);
1159	}
1160
1161	void
1162	ev_prepare_start (EV_P_ struct ev_prepare *w)
1163	{
1164	if (ev_is_active (w))
1165	return;
1166
1167	ev_start (EV_A_ (W)w, ++preparecnt);
1168	array_needsize (prepares, preparemax, preparecnt, );
1169	prepares [preparecnt - 1] = w;
1170	}
1171
1172	void
1173	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1174	{
1175	ev_clear_pending (EV_A_ (W)w);
1176	if (ev_is_active (w))
1177	return;
1178
1179	prepares [w->active - 1] = prepares [--preparecnt];
1180	ev_stop (EV_A_ (W)w);
1181	}
1182
1183	void
1184	ev_check_start (EV_P_ struct ev_check *w)
1185	{
1186	if (ev_is_active (w))
1187	return;
1188
1189	ev_start (EV_A_ (W)w, ++checkcnt);
1190	array_needsize (checks, checkmax, checkcnt, );
1191	checks [checkcnt - 1] = w;
1192	}
1193
1194	void
1195	ev_check_stop (EV_P_ struct ev_check *w)
1196	{
1197	ev_clear_pending (EV_A_ (W)w);
1198	if (ev_is_active (w))
1199	return;
1200
1201	checks [w->active - 1] = checks [--checkcnt];
1202	ev_stop (EV_A_ (W)w);
1203	}
1204
1205	void
1206	ev_child_start (EV_P_ struct ev_child *w)	1511	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1512	{
		1513	#if EV_MULTIPLICITY
		1514	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1515	#endif
1208	if (ev_is_active (w))	1516	if (ev_is_active (w))
1209	return;	1517	return;
1210		1518
1211	ev_start (EV_A_ (W)w, 1);	1519	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1520	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1239	void (*cb)(int revents, void *arg) = once->cb;	1547	void (*cb)(int revents, void *arg) = once->cb;
1240	void *arg = once->arg;	1548	void *arg = once->arg;
1241		1549
1242	ev_io_stop (EV_A_ &once->io);	1550	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1551	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1552	ev_free (once);
1245		1553
1246	cb (revents, arg);	1554	cb (revents, arg);
1247	}	1555	}
1248		1556
1249	static void	1557	static void
…		…
1259	}	1567	}
1260		1568
1261	void	1569	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)	1570	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (*cb)(int revents, void *arg), void *arg)
1263	{	1571	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1572	struct ev_once *once = (struct ev_once *)ev_malloc (sizeof (struct ev_once));
1265		1573
1266	if (!once)	1574	if (!once)
1267	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);	1575	cb (EV_ERROR | EV_READ | EV_WRITE | EV_TIMEOUT, arg);
1268	else	1576	else
1269	{	1577	{
1270	once->cb = cb;	1578	once->cb = cb;
1271	once->arg = arg;	1579	once->arg = arg;
1272		1580
1273	ev_watcher_init (&once->io, once_cb_io);	1581	ev_init (&once->io, once_cb_io);
1274	if (fd >= 0)	1582	if (fd >= 0)
1275	{	1583	{
1276	ev_io_set (&once->io, fd, events);	1584	ev_io_set (&once->io, fd, events);
1277	ev_io_start (EV_A_ &once->io);	1585	ev_io_start (EV_A_ &once->io);
1278	}	1586	}
1279		1587
1280	ev_watcher_init (&once->to, once_cb_to);	1588	ev_init (&once->to, once_cb_to);
1281	if (timeout >= 0.)	1589	if (timeout >= 0.)
1282	{	1590	{
1283	ev_timer_set (&once->to, timeout, 0.);	1591	ev_timer_set (&once->to, timeout, 0.);
1284	ev_timer_start (EV_A_ &once->to);	1592	ev_timer_start (EV_A_ &once->to);
1285	}	1593	}
1286	}	1594	}
1287	}	1595	}
1288		1596
1289	/*****************************************************************************/
1290
1291	#if 0
1292
1293	struct ev_io wio;
1294
1295	static void
1296	sin_cb (struct ev_io *w, int revents)
1297	{
1298	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299	}
1300
1301	static void
1302	ocb (struct ev_timer *w, int revents)
1303	{
1304	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305	ev_timer_stop (w);
1306	ev_timer_start (w);
1307	}
1308
1309	static void
1310	scb (struct ev_signal *w, int revents)
1311	{
1312	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313	ev_io_stop (&wio);
1314	ev_io_start (&wio);
1315	}
1316
1317	static void
1318	gcb (struct ev_signal *w, int revents)
1319	{
1320	fprintf (stderr, "generic %x\n", revents);
1321
1322	}
1323
1324	int main (void)
1325	{
1326	ev_init (0);
1327
1328	ev_io_init (&wio, sin_cb, 0, EV_READ);
1329	ev_io_start (&wio);
1330
1331	struct ev_timer t[10000];
1332
1333	#if 0
1334	int i;
1335	for (i = 0; i < 10000; ++i)
1336	{
1337	struct ev_timer *w = t + i;
1338	ev_watcher_init (w, ocb, i);
1339	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340	ev_timer_start (w);
1341	if (drand48 () < 0.5)
1342	ev_timer_stop (w);
1343	}
1344	#endif
1345
1346	struct ev_timer t1;
1347	ev_timer_init (&t1, ocb, 5, 10);
1348	ev_timer_start (&t1);
1349
1350	struct ev_signal sig;
1351	ev_signal_init (&sig, scb, SIGQUIT);
1352	ev_signal_start (&sig);
1353
1354	struct ev_check cw;
1355	ev_check_init (&cw, gcb);
1356	ev_check_start (&cw);
1357
1358	struct ev_idle iw;
1359	ev_idle_init (&iw, gcb);
1360	ev_idle_start (&iw);
1361
1362	ev_loop (0);
1363
1364	return 0;
1365	}
1366
1367	#endif
1368
1369
1370
1371

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