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

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.83 by root, Fri Nov 9 21:48:23 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;
416	}	521	}
417		522
418	/*****************************************************************************/	523	/*****************************************************************************/
419		524
420	typedef struct	525	typedef struct
421	{	526	{
422	struct ev_watcher_list *head;	527	WL head;
423	sig_atomic_t volatile gotsig;	528	sig_atomic_t volatile gotsig;
424	} ANSIG;	529	} ANSIG;
425		530
426	static ANSIG *signals;	531	static ANSIG *signals;
427	static int signalmax;	532	static int signalmax;
…		…
443	}	548	}
444		549
445	static void	550	static void
446	sighandler (int signum)	551	sighandler (int signum)
447	{	552	{
		553	#if WIN32
		554	signal (signum, sighandler);
		555	#endif
		556
448	signals [signum - 1].gotsig = 1;	557	signals [signum - 1].gotsig = 1;
449		558
450	if (!gotsig)	559	if (!gotsig)
451	{	560	{
452	int old_errno = errno;	561	int old_errno = errno;
453	gotsig = 1;	562	gotsig = 1;
		563	#ifdef WIN32
		564	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		565	#else
454	write (sigpipe [1], &signum, 1);	566	write (sigpipe [1], &signum, 1);
		567	#endif
455	errno = old_errno;	568	errno = old_errno;
456	}	569	}
457	}	570	}
458		571
		572	void
		573	ev_feed_signal_event (EV_P_ int signum)
		574	{
		575	WL w;
		576
		577	#if EV_MULTIPLICITY
		578	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		579	#endif
		580
		581	--signum;
		582
		583	if (signum < 0 \|\| signum >= signalmax)
		584	return;
		585
		586	signals [signum].gotsig = 0;
		587
		588	for (w = signals [signum].head; w; w = w->next)
		589	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		590	}
		591
459	static void	592	static void
460	sigcb (EV_P_ struct ev_io *iow, int revents)	593	sigcb (EV_P_ struct ev_io *iow, int revents)
461	{	594	{
462	struct ev_watcher_list *w;
463	int signum;	595	int signum;
464		596
		597	#ifdef WIN32
		598	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		599	#else
465	read (sigpipe [0], &revents, 1);	600	read (sigpipe [0], &revents, 1);
		601	#endif
466	gotsig = 0;	602	gotsig = 0;
467		603
468	for (signum = signalmax; signum--; )	604	for (signum = signalmax; signum--; )
469	if (signals [signum].gotsig)	605	if (signals [signum].gotsig)
470	{	606	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	}	607	}
477		608
478	static void	609	static void
479	siginit (EV_P)	610	siginit (EV_P)
480	{	611	{
…		…
486	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);	617	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
487	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);	618	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
488	#endif	619	#endif
489		620
490	ev_io_set (&sigev, sigpipe [0], EV_READ);	621	ev_io_set (&sigev, sigpipe [0], EV_READ);
491	ev_io_start (&sigev);	622	ev_io_start (EV_A_ &sigev);
492	ev_unref (EV_A); /* child watcher should not keep loop alive */	623	ev_unref (EV_A); /* child watcher should not keep loop alive */
493	}	624	}
494		625
495	/*****************************************************************************/	626	/*****************************************************************************/
496		627
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];	628	static struct ev_child *childs [PID_HASHSIZE];
		629
		630	#ifndef WIN32
		631
509	static struct ev_signal childev;	632	static struct ev_signal childev;
510
511	#ifndef WIN32
512		633
513	#ifndef WCONTINUED	634	#ifndef WCONTINUED
514	# define WCONTINUED 0	635	# define WCONTINUED 0
515	#endif	636	#endif
516		637
…		…
520	struct ev_child *w;	641	struct ev_child *w;
521		642
522	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	643	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)	644	if (w->pid == pid \|\| !w->pid)
524	{	645	{
525	w->priority = sw->priority; /* need to do it now */	646	ev_priority (w) = ev_priority (sw); /* need to do it now */
526	w->rpid = pid;	647	w->rpid = pid;
527	w->rstatus = status;	648	w->rstatus = status;
528	event (EV_A_ (W)w, EV_CHILD);	649	ev_feed_event (EV_A_ (W)w, EV_CHILD);
529	}	650	}
530	}	651	}
531		652
532	static void	653	static void
533	childcb (EV_P_ struct ev_signal *sw, int revents)	654	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
535	int pid, status;	656	int pid, status;
536		657
537	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	658	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
538	{	659	{
539	/* make sure we are called again until all childs have been reaped */	660	/* make sure we are called again until all childs have been reaped */
540	event (EV_A_ (W)sw, EV_SIGNAL);	661	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
541		662
542	child_reap (EV_A_ sw, pid, pid, status);	663	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 */	664	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
544	}	665	}
545	}	666	}
…		…
552	# include "ev_kqueue.c"	673	# include "ev_kqueue.c"
553	#endif	674	#endif
554	#if EV_USE_EPOLL	675	#if EV_USE_EPOLL
555	# include "ev_epoll.c"	676	# include "ev_epoll.c"
556	#endif	677	#endif
557	#if EV_USEV_POLL	678	#if EV_USE_POLL
558	# include "ev_poll.c"	679	# include "ev_poll.c"
559	#endif	680	#endif
560	#if EV_USE_SELECT	681	#if EV_USE_SELECT
561	# include "ev_select.c"	682	# include "ev_select.c"
562	#endif	683	#endif
…		…
589	ev_method (EV_P)	710	ev_method (EV_P)
590	{	711	{
591	return method;	712	return method;
592	}	713	}
593		714
594	int	715	static void
595	ev_init (EV_P_ int methods)	716	loop_init (EV_P_ int methods)
596	{	717	{
597	if (!method)	718	if (!method)
598	{	719	{
599	#if EV_USE_MONOTONIC	720	#if EV_USE_MONOTONIC
600	{	721	{
…		…
605	#endif	726	#endif
606		727
607	rt_now = ev_time ();	728	rt_now = ev_time ();
608	mn_now = get_clock ();	729	mn_now = get_clock ();
609	now_floor = mn_now;	730	now_floor = mn_now;
610	diff = rt_now - mn_now;	731	rtmn_diff = rt_now - mn_now;
611
612	if (pipe (sigpipe))
613	return 0;
614		732
615	if (methods == EVMETHOD_AUTO)	733	if (methods == EVMETHOD_AUTO)
616	if (!enable_secure () && getenv ("LIBmethodS"))	734	if (!enable_secure () && getenv ("LIBEV_METHODS"))
617	methods = atoi (getenv ("LIBmethodS"));	735	methods = atoi (getenv ("LIBEV_METHODS"));
618	else	736	else
619	methods = EVMETHOD_ANY;	737	methods = EVMETHOD_ANY;
620		738
621	method = 0;	739	method = 0;
		740	#if EV_USE_WIN32
		741	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		742	#endif
622	#if EV_USE_KQUEUE	743	#if EV_USE_KQUEUE
623	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	744	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
624	#endif	745	#endif
625	#if EV_USE_EPOLL	746	#if EV_USE_EPOLL
626	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	747	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
627	#endif	748	#endif
628	#if EV_USEV_POLL	749	#if EV_USE_POLL
629	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	750	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
630	#endif	751	#endif
631	#if EV_USE_SELECT	752	#if EV_USE_SELECT
632	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	753	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
633	#endif	754	#endif
634		755
		756	ev_init (&sigev, sigcb);
		757	ev_set_priority (&sigev, EV_MAXPRI);
		758	}
		759	}
		760
		761	void
		762	loop_destroy (EV_P)
		763	{
		764	int i;
		765
		766	#if EV_USE_WIN32
		767	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		768	#endif
		769	#if EV_USE_KQUEUE
		770	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		771	#endif
		772	#if EV_USE_EPOLL
		773	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		774	#endif
		775	#if EV_USE_POLL
		776	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		777	#endif
		778	#if EV_USE_SELECT
		779	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		780	#endif
		781
		782	for (i = NUMPRI; i--; )
		783	array_free (pending, [i]);
		784
		785	/* have to use the microsoft-never-gets-it-right macro */
		786	array_free_microshit (fdchange);
		787	array_free_microshit (timer);
		788	array_free_microshit (periodic);
		789	array_free_microshit (idle);
		790	array_free_microshit (prepare);
		791	array_free_microshit (check);
		792
		793	method = 0;
		794	}
		795
		796	static void
		797	loop_fork (EV_P)
		798	{
		799	#if EV_USE_EPOLL
		800	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		801	#endif
		802	#if EV_USE_KQUEUE
		803	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		804	#endif
		805
		806	if (ev_is_active (&sigev))
		807	{
		808	/* default loop */
		809
		810	ev_ref (EV_A);
		811	ev_io_stop (EV_A_ &sigev);
		812	close (sigpipe [0]);
		813	close (sigpipe [1]);
		814
		815	while (pipe (sigpipe))
		816	syserr ("(libev) error creating pipe");
		817
		818	siginit (EV_A);
		819	}
		820
		821	postfork = 0;
		822	}
		823
		824	#if EV_MULTIPLICITY
		825	struct ev_loop *
		826	ev_loop_new (int methods)
		827	{
		828	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		829
		830	memset (loop, 0, sizeof (struct ev_loop));
		831
		832	loop_init (EV_A_ methods);
		833
		834	if (ev_method (EV_A))
		835	return loop;
		836
		837	return 0;
		838	}
		839
		840	void
		841	ev_loop_destroy (EV_P)
		842	{
		843	loop_destroy (EV_A);
		844	ev_free (loop);
		845	}
		846
		847	void
		848	ev_loop_fork (EV_P)
		849	{
		850	postfork = 1;
		851	}
		852
		853	#endif
		854
		855	#if EV_MULTIPLICITY
		856	struct ev_loop *
		857	#else
		858	int
		859	#endif
		860	ev_default_loop (int methods)
		861	{
		862	if (sigpipe [0] == sigpipe [1])
		863	if (pipe (sigpipe))
		864	return 0;
		865
		866	if (!default_loop)
		867	{
		868	#if EV_MULTIPLICITY
		869	struct ev_loop *loop = default_loop = &default_loop_struct;
		870	#else
		871	default_loop = 1;
		872	#endif
		873
		874	loop_init (EV_A_ methods);
		875
635	if (method)	876	if (ev_method (EV_A))
636	{	877	{
637	ev_watcher_init (&sigev, sigcb);
638	ev_set_priority (&sigev, EV_MAXPRI);
639	siginit (EV_A);	878	siginit (EV_A);
640		879
641	#ifndef WIN32	880	#ifndef WIN32
642	ev_signal_init (&childev, childcb, SIGCHLD);	881	ev_signal_init (&childev, childcb, SIGCHLD);
643	ev_set_priority (&childev, EV_MAXPRI);	882	ev_set_priority (&childev, EV_MAXPRI);
644	ev_signal_start (EV_A_ &childev);	883	ev_signal_start (EV_A_ &childev);
645	ev_unref (EV_A); /* child watcher should not keep loop alive */	884	ev_unref (EV_A); /* child watcher should not keep loop alive */
646	#endif	885	#endif
647	}	886	}
		887	else
		888	default_loop = 0;
648	}	889	}
649		890
650	return method;	891	return default_loop;
		892	}
		893
		894	void
		895	ev_default_destroy (void)
		896	{
		897	#if EV_MULTIPLICITY
		898	struct ev_loop *loop = default_loop;
		899	#endif
		900
		901	#ifndef WIN32
		902	ev_ref (EV_A); /* child watcher */
		903	ev_signal_stop (EV_A_ &childev);
		904	#endif
		905
		906	ev_ref (EV_A); /* signal watcher */
		907	ev_io_stop (EV_A_ &sigev);
		908
		909	close (sigpipe [0]); sigpipe [0] = 0;
		910	close (sigpipe [1]); sigpipe [1] = 0;
		911
		912	loop_destroy (EV_A);
		913	}
		914
		915	void
		916	ev_default_fork (void)
		917	{
		918	#if EV_MULTIPLICITY
		919	struct ev_loop *loop = default_loop;
		920	#endif
		921
		922	if (method)
		923	postfork = 1;
651	}	924	}
652		925
653	/*****************************************************************************/	926	/*****************************************************************************/
654		927
655	void	928	static int
656	ev_fork_prepare (void)	929	any_pending (EV_P)
657	{	930	{
658	/* nop */	931	int pri;
659	}
660		932
661	void	933	for (pri = NUMPRI; pri--; )
662	ev_fork_parent (void)	934	if (pendingcnt [pri])
663	{	935	return 1;
664	/* nop */
665	}
666		936
667	void	937	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	}	938	}
681
682	/*****************************************************************************/
683		939
684	static void	940	static void
685	call_pending (EV_P)	941	call_pending (EV_P)
686	{	942	{
687	int pri;	943	int pri;
…		…
692	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	948	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
693		949
694	if (p->w)	950	if (p->w)
695	{	951	{
696	p->w->pending = 0;	952	p->w->pending = 0;
697	p->w->cb (EV_A_ p->w, p->events);	953	EV_CB_INVOKE (p->w, p->events);
698	}	954	}
699	}	955	}
700	}	956	}
701		957
702	static void	958	static void
703	timers_reify (EV_P)	959	timers_reify (EV_P)
704	{	960	{
705	while (timercnt && timers [0]->at <= mn_now)	961	while (timercnt && ((WT)timers [0])->at <= mn_now)
706	{	962	{
707	struct ev_timer *w = timers [0];	963	struct ev_timer *w = timers [0];
		964
		965	assert (("inactive timer on timer heap detected", ev_is_active (w)));
708		966
709	/* first reschedule or stop timer */	967	/* first reschedule or stop timer */
710	if (w->repeat)	968	if (w->repeat)
711	{	969	{
712	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	970	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
713	w->at = mn_now + w->repeat;	971	((WT)w)->at = mn_now + w->repeat;
714	downheap ((WT *)timers, timercnt, 0);	972	downheap ((WT *)timers, timercnt, 0);
715	}	973	}
716	else	974	else
717	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	975	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
718		976
719	event ((W)w, EV_TIMEOUT);	977	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
720	}	978	}
721	}	979	}
722		980
723	static void	981	static void
724	periodics_reify (EV_P)	982	periodics_reify (EV_P)
725	{	983	{
726	while (periodiccnt && periodics [0]->at <= rt_now)	984	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)
727	{	985	{
728	struct ev_periodic *w = periodics [0];	986	struct ev_periodic *w = periodics [0];
729		987
		988	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		989
730	/* first reschedule or stop timer */	990	/* first reschedule or stop timer */
731	if (w->interval)	991	if (w->reschedule_cb)
732	{	992	{
		993	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, rt_now + 0.0001);
		994
		995	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > rt_now));
		996	downheap ((WT *)periodics, periodiccnt, 0);
		997	}
		998	else if (w->interval)
		999	{
733	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1000	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
734	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1001	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));
735	downheap ((WT *)periodics, periodiccnt, 0);	1002	downheap ((WT *)periodics, periodiccnt, 0);
736	}	1003	}
737	else	1004	else
738	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1005	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
739		1006
740	event (EV_A_ (W)w, EV_PERIODIC);	1007	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
741	}	1008	}
742	}	1009	}
743		1010
744	static void	1011	static void
745	periodics_reschedule (EV_P_ ev_tstamp diff)	1012	periodics_reschedule (EV_P)
746	{	1013	{
747	int i;	1014	int i;
748		1015
749	/* adjust periodics after time jump */	1016	/* adjust periodics after time jump */
750	for (i = 0; i < periodiccnt; ++i)	1017	for (i = 0; i < periodiccnt; ++i)
751	{	1018	{
752	struct ev_periodic *w = periodics [i];	1019	struct ev_periodic *w = periodics [i];
753		1020
		1021	if (w->reschedule_cb)
		1022	((WT)w)->at = w->reschedule_cb (w, rt_now);
754	if (w->interval)	1023	else if (w->interval)
755	{
756	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1024	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
757
758	if (fabs (diff) >= 1e-4)
759	{
760	ev_periodic_stop (EV_A_ w);
761	ev_periodic_start (EV_A_ w);
762
763	i = 0; /* restart loop, inefficient, but time jumps should be rare */
764	}
765	}
766	}	1025	}
		1026
		1027	/* now rebuild the heap */
		1028	for (i = periodiccnt >> 1; i--; )
		1029	downheap ((WT *)periodics, periodiccnt, i);
767	}	1030	}
768		1031
769	inline int	1032	inline int
770	time_update_monotonic (EV_P)	1033	time_update_monotonic (EV_P)
771	{	1034	{
772	mn_now = get_clock ();	1035	mn_now = get_clock ();
773		1036
774	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1037	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
775	{	1038	{
776	rt_now = mn_now + diff;	1039	rt_now = rtmn_diff + mn_now;
777	return 0;	1040	return 0;
778	}	1041	}
779	else	1042	else
780	{	1043	{
781	now_floor = mn_now;	1044	now_floor = mn_now;
…		…
792	#if EV_USE_MONOTONIC	1055	#if EV_USE_MONOTONIC
793	if (expect_true (have_monotonic))	1056	if (expect_true (have_monotonic))
794	{	1057	{
795	if (time_update_monotonic (EV_A))	1058	if (time_update_monotonic (EV_A))
796	{	1059	{
797	ev_tstamp odiff = diff;	1060	ev_tstamp odiff = rtmn_diff;
798		1061
799	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1062	for (i = 4; --i; ) /* loop a few times, before making important decisions */
800	{	1063	{
801	diff = rt_now - mn_now;	1064	rtmn_diff = rt_now - mn_now;
802		1065
803	if (fabs (odiff - diff) < MIN_TIMEJUMP)	1066	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
804	return; /* all is well */	1067	return; /* all is well */
805		1068
806	rt_now = ev_time ();	1069	rt_now = ev_time ();
807	mn_now = get_clock ();	1070	mn_now = get_clock ();
808	now_floor = mn_now;	1071	now_floor = mn_now;
809	}	1072	}
810		1073
811	periodics_reschedule (EV_A_ diff - odiff);	1074	periodics_reschedule (EV_A);
812	/* no timer adjustment, as the monotonic clock doesn't jump */	1075	/* no timer adjustment, as the monotonic clock doesn't jump */
		1076	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
813	}	1077	}
814	}	1078	}
815	else	1079	else
816	#endif	1080	#endif
817	{	1081	{
818	rt_now = ev_time ();	1082	rt_now = ev_time ();
819		1083
820	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1084	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
821	{	1085	{
822	periodics_reschedule (EV_A_ rt_now - mn_now);	1086	periodics_reschedule (EV_A);
823		1087
824	/* adjust timers. this is easy, as the offset is the same for all */	1088	/* adjust timers. this is easy, as the offset is the same for all */
825	for (i = 0; i < timercnt; ++i)	1089	for (i = 0; i < timercnt; ++i)
826	timers [i]->at += diff;	1090	((WT)timers [i])->at += rt_now - mn_now;
827	}	1091	}
828		1092
829	mn_now = rt_now;	1093	mn_now = rt_now;
830	}	1094	}
831	}	1095	}
…		…
857	{	1121	{
858	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1122	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
859	call_pending (EV_A);	1123	call_pending (EV_A);
860	}	1124	}
861		1125
		1126	/* we might have forked, so reify kernel state if necessary */
		1127	if (expect_false (postfork))
		1128	loop_fork (EV_A);
		1129
862	/* update fd-related kernel structures */	1130	/* update fd-related kernel structures */
863	fd_reify (EV_A);	1131	fd_reify (EV_A);
864		1132
865	/* calculate blocking time */	1133	/* calculate blocking time */
866		1134
867	/* we only need this for !monotonic clockor timers, but as we basically	1135	/* we only need this for !monotonic clock or timers, but as we basically
868	always have timers, we just calculate it always */	1136	always have timers, we just calculate it always */
869	#if EV_USE_MONOTONIC	1137	#if EV_USE_MONOTONIC
870	if (expect_true (have_monotonic))	1138	if (expect_true (have_monotonic))
871	time_update_monotonic (EV_A);	1139	time_update_monotonic (EV_A);
872	else	1140	else
…		…
882	{	1150	{
883	block = MAX_BLOCKTIME;	1151	block = MAX_BLOCKTIME;
884		1152
885	if (timercnt)	1153	if (timercnt)
886	{	1154	{
887	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1155	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
888	if (block > to) block = to;	1156	if (block > to) block = to;
889	}	1157	}
890		1158
891	if (periodiccnt)	1159	if (periodiccnt)
892	{	1160	{
893	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1161	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;
894	if (block > to) block = to;	1162	if (block > to) block = to;
895	}	1163	}
896		1164
897	if (block < 0.) block = 0.;	1165	if (block < 0.) block = 0.;
898	}	1166	}
…		…
905	/* queue pending timers and reschedule them */	1173	/* queue pending timers and reschedule them */
906	timers_reify (EV_A); /* relative timers called last */	1174	timers_reify (EV_A); /* relative timers called last */
907	periodics_reify (EV_A); /* absolute timers called first */	1175	periodics_reify (EV_A); /* absolute timers called first */
908		1176
909	/* queue idle watchers unless io or timers are pending */	1177	/* queue idle watchers unless io or timers are pending */
910	if (!pendingcnt)	1178	if (idlecnt && !any_pending (EV_A))
911	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1179	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
912		1180
913	/* queue check watchers, to be executed first */	1181	/* queue check watchers, to be executed first */
914	if (checkcnt)	1182	if (checkcnt)
915	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1183	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
990	return;	1258	return;
991		1259
992	assert (("ev_io_start called with negative fd", fd >= 0));	1260	assert (("ev_io_start called with negative fd", fd >= 0));
993		1261
994	ev_start (EV_A_ (W)w, 1);	1262	ev_start (EV_A_ (W)w, 1);
995	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1263	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
996	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1264	wlist_add ((WL *)&anfds[fd].head, (WL)w);
997		1265
998	fd_change (EV_A_ fd);	1266	fd_change (EV_A_ fd);
999	}	1267	}
1000		1268
…		…
1015	ev_timer_start (EV_P_ struct ev_timer *w)	1283	ev_timer_start (EV_P_ struct ev_timer *w)
1016	{	1284	{
1017	if (ev_is_active (w))	1285	if (ev_is_active (w))
1018	return;	1286	return;
1019		1287
1020	w->at += mn_now;	1288	((WT)w)->at += mn_now;
1021		1289
1022	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1290	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1023		1291
1024	ev_start (EV_A_ (W)w, ++timercnt);	1292	ev_start (EV_A_ (W)w, ++timercnt);
1025	array_needsize (timers, timermax, timercnt, );	1293	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1026	timers [timercnt - 1] = w;	1294	timers [timercnt - 1] = w;
1027	upheap ((WT *)timers, timercnt - 1);	1295	upheap ((WT *)timers, timercnt - 1);
		1296
		1297	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1028	}	1298	}
1029		1299
1030	void	1300	void
1031	ev_timer_stop (EV_P_ struct ev_timer *w)	1301	ev_timer_stop (EV_P_ struct ev_timer *w)
1032	{	1302	{
1033	ev_clear_pending (EV_A_ (W)w);	1303	ev_clear_pending (EV_A_ (W)w);
1034	if (!ev_is_active (w))	1304	if (!ev_is_active (w))
1035	return;	1305	return;
1036		1306
		1307	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1308
1037	if (w->active < timercnt--)	1309	if (((W)w)->active < timercnt--)
1038	{	1310	{
1039	timers [w->active - 1] = timers [timercnt];	1311	timers [((W)w)->active - 1] = timers [timercnt];
1040	downheap ((WT *)timers, timercnt, w->active - 1);	1312	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1041	}	1313	}
1042		1314
1043	w->at = w->repeat;	1315	((WT)w)->at = w->repeat;
1044		1316
1045	ev_stop (EV_A_ (W)w);	1317	ev_stop (EV_A_ (W)w);
1046	}	1318	}
1047		1319
1048	void	1320	void
…		…
1050	{	1322	{
1051	if (ev_is_active (w))	1323	if (ev_is_active (w))
1052	{	1324	{
1053	if (w->repeat)	1325	if (w->repeat)
1054	{	1326	{
1055	w->at = mn_now + w->repeat;	1327	((WT)w)->at = mn_now + w->repeat;
1056	downheap ((WT *)timers, timercnt, w->active - 1);	1328	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1057	}	1329	}
1058	else	1330	else
1059	ev_timer_stop (EV_A_ w);	1331	ev_timer_stop (EV_A_ w);
1060	}	1332	}
1061	else if (w->repeat)	1333	else if (w->repeat)
…		…
1066	ev_periodic_start (EV_P_ struct ev_periodic *w)	1338	ev_periodic_start (EV_P_ struct ev_periodic *w)
1067	{	1339	{
1068	if (ev_is_active (w))	1340	if (ev_is_active (w))
1069	return;	1341	return;
1070		1342
		1343	if (w->reschedule_cb)
		1344	((WT)w)->at = w->reschedule_cb (w, rt_now);
		1345	else if (w->interval)
		1346	{
1071	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1347	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 */	1348	/* 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;	1349	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1350	}
1076		1351
1077	ev_start (EV_A_ (W)w, ++periodiccnt);	1352	ev_start (EV_A_ (W)w, ++periodiccnt);
1078	array_needsize (periodics, periodicmax, periodiccnt, );	1353	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1079	periodics [periodiccnt - 1] = w;	1354	periodics [periodiccnt - 1] = w;
1080	upheap ((WT *)periodics, periodiccnt - 1);	1355	upheap ((WT *)periodics, periodiccnt - 1);
		1356
		1357	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1081	}	1358	}
1082		1359
1083	void	1360	void
1084	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1361	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1085	{	1362	{
1086	ev_clear_pending (EV_A_ (W)w);	1363	ev_clear_pending (EV_A_ (W)w);
1087	if (!ev_is_active (w))	1364	if (!ev_is_active (w))
1088	return;	1365	return;
1089		1366
		1367	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1368
1090	if (w->active < periodiccnt--)	1369	if (((W)w)->active < periodiccnt--)
1091	{	1370	{
1092	periodics [w->active - 1] = periodics [periodiccnt];	1371	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1093	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1372	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1094	}	1373	}
1095		1374
		1375	ev_stop (EV_A_ (W)w);
		1376	}
		1377
		1378	void
		1379	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1380	{
		1381	ev_periodic_stop (EV_A_ w);
		1382	ev_periodic_start (EV_A_ w);
		1383	}
		1384
		1385	void
		1386	ev_idle_start (EV_P_ struct ev_idle *w)
		1387	{
		1388	if (ev_is_active (w))
		1389	return;
		1390
		1391	ev_start (EV_A_ (W)w, ++idlecnt);
		1392	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1393	idles [idlecnt - 1] = w;
		1394	}
		1395
		1396	void
		1397	ev_idle_stop (EV_P_ struct ev_idle *w)
		1398	{
		1399	ev_clear_pending (EV_A_ (W)w);
		1400	if (ev_is_active (w))
		1401	return;
		1402
		1403	idles [((W)w)->active - 1] = idles [--idlecnt];
		1404	ev_stop (EV_A_ (W)w);
		1405	}
		1406
		1407	void
		1408	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1409	{
		1410	if (ev_is_active (w))
		1411	return;
		1412
		1413	ev_start (EV_A_ (W)w, ++preparecnt);
		1414	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1415	prepares [preparecnt - 1] = w;
		1416	}
		1417
		1418	void
		1419	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1420	{
		1421	ev_clear_pending (EV_A_ (W)w);
		1422	if (ev_is_active (w))
		1423	return;
		1424
		1425	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1426	ev_stop (EV_A_ (W)w);
		1427	}
		1428
		1429	void
		1430	ev_check_start (EV_P_ struct ev_check *w)
		1431	{
		1432	if (ev_is_active (w))
		1433	return;
		1434
		1435	ev_start (EV_A_ (W)w, ++checkcnt);
		1436	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1437	checks [checkcnt - 1] = w;
		1438	}
		1439
		1440	void
		1441	ev_check_stop (EV_P_ struct ev_check *w)
		1442	{
		1443	ev_clear_pending (EV_A_ (W)w);
		1444	if (ev_is_active (w))
		1445	return;
		1446
		1447	checks [((W)w)->active - 1] = checks [--checkcnt];
1096	ev_stop (EV_A_ (W)w);	1448	ev_stop (EV_A_ (W)w);
1097	}	1449	}
1098		1450
1099	#ifndef SA_RESTART	1451	#ifndef SA_RESTART
1100	# define SA_RESTART 0	1452	# define SA_RESTART 0
1101	#endif	1453	#endif
1102		1454
1103	void	1455	void
1104	ev_signal_start (EV_P_ struct ev_signal *w)	1456	ev_signal_start (EV_P_ struct ev_signal *w)
1105	{	1457	{
		1458	#if EV_MULTIPLICITY
		1459	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1460	#endif
1106	if (ev_is_active (w))	1461	if (ev_is_active (w))
1107	return;	1462	return;
1108		1463
1109	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1464	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1110		1465
1111	ev_start (EV_A_ (W)w, 1);	1466	ev_start (EV_A_ (W)w, 1);
1112	array_needsize (signals, signalmax, w->signum, signals_init);	1467	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1113	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1468	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1114		1469
1115	if (!w->next)	1470	if (!((WL)w)->next)
1116	{	1471	{
		1472	#if WIN32
		1473	signal (w->signum, sighandler);
		1474	#else
1117	struct sigaction sa;	1475	struct sigaction sa;
1118	sa.sa_handler = sighandler;	1476	sa.sa_handler = sighandler;
1119	sigfillset (&sa.sa_mask);	1477	sigfillset (&sa.sa_mask);
1120	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1478	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1121	sigaction (w->signum, &sa, 0);	1479	sigaction (w->signum, &sa, 0);
		1480	#endif
1122	}	1481	}
1123	}	1482	}
1124		1483
1125	void	1484	void
1126	ev_signal_stop (EV_P_ struct ev_signal *w)	1485	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1135	if (!signals [w->signum - 1].head)	1494	if (!signals [w->signum - 1].head)
1136	signal (w->signum, SIG_DFL);	1495	signal (w->signum, SIG_DFL);
1137	}	1496	}
1138		1497
1139	void	1498	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)	1499	ev_child_start (EV_P_ struct ev_child *w)
1207	{	1500	{
		1501	#if EV_MULTIPLICITY
		1502	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1503	#endif
1208	if (ev_is_active (w))	1504	if (ev_is_active (w))
1209	return;	1505	return;
1210		1506
1211	ev_start (EV_A_ (W)w, 1);	1507	ev_start (EV_A_ (W)w, 1);
1212	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1508	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1239	void (cb)(int revents, void arg) = once->cb;	1535	void (cb)(int revents, void arg) = once->cb;
1240	void *arg = once->arg;	1536	void *arg = once->arg;
1241		1537
1242	ev_io_stop (EV_A_ &once->io);	1538	ev_io_stop (EV_A_ &once->io);
1243	ev_timer_stop (EV_A_ &once->to);	1539	ev_timer_stop (EV_A_ &once->to);
1244	free (once);	1540	ev_free (once);
1245		1541
1246	cb (revents, arg);	1542	cb (revents, arg);
1247	}	1543	}
1248		1544
1249	static void	1545	static void
…		…
1259	}	1555	}
1260		1556
1261	void	1557	void
1262	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1558	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1263	{	1559	{
1264	struct ev_once *once = malloc (sizeof (struct ev_once));	1560	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1265		1561
1266	if (!once)	1562	if (!once)
1267	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1563	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1268	else	1564	else
1269	{	1565	{
1270	once->cb = cb;	1566	once->cb = cb;
1271	once->arg = arg;	1567	once->arg = arg;
1272		1568
1273	ev_watcher_init (&once->io, once_cb_io);	1569	ev_init (&once->io, once_cb_io);
1274	if (fd >= 0)	1570	if (fd >= 0)
1275	{	1571	{
1276	ev_io_set (&once->io, fd, events);	1572	ev_io_set (&once->io, fd, events);
1277	ev_io_start (EV_A_ &once->io);	1573	ev_io_start (EV_A_ &once->io);
1278	}	1574	}
1279		1575
1280	ev_watcher_init (&once->to, once_cb_to);	1576	ev_init (&once->to, once_cb_to);
1281	if (timeout >= 0.)	1577	if (timeout >= 0.)
1282	{	1578	{
1283	ev_timer_set (&once->to, timeout, 0.);	1579	ev_timer_set (&once->to, timeout, 0.);
1284	ev_timer_start (EV_A_ &once->to);	1580	ev_timer_start (EV_A_ &once->to);
1285	}	1581	}
1286	}	1582	}
1287	}	1583	}
1288		1584
1289	/*****************************************************************************/
1290
1291	#if 0
1292
1293	struct ev_io wio;
1294
1295	static void
1296	sin_cb (struct ev_io *w, int revents)
1297	{
1298	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1299	}
1300
1301	static void
1302	ocb (struct ev_timer *w, int revents)
1303	{
1304	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1305	ev_timer_stop (w);
1306	ev_timer_start (w);
1307	}
1308
1309	static void
1310	scb (struct ev_signal *w, int revents)
1311	{
1312	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1313	ev_io_stop (&wio);
1314	ev_io_start (&wio);
1315	}
1316
1317	static void
1318	gcb (struct ev_signal *w, int revents)
1319	{
1320	fprintf (stderr, "generic %x\n", revents);
1321
1322	}
1323
1324	int main (void)
1325	{
1326	ev_init (0);
1327
1328	ev_io_init (&wio, sin_cb, 0, EV_READ);
1329	ev_io_start (&wio);
1330
1331	struct ev_timer t[10000];
1332
1333	#if 0
1334	int i;
1335	for (i = 0; i < 10000; ++i)
1336	{
1337	struct ev_timer *w = t + i;
1338	ev_watcher_init (w, ocb, i);
1339	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1340	ev_timer_start (w);
1341	if (drand48 () < 0.5)
1342	ev_timer_stop (w);
1343	}
1344	#endif
1345
1346	struct ev_timer t1;
1347	ev_timer_init (&t1, ocb, 5, 10);
1348	ev_timer_start (&t1);
1349
1350	struct ev_signal sig;
1351	ev_signal_init (&sig, scb, SIGQUIT);
1352	ev_signal_start (&sig);
1353
1354	struct ev_check cw;
1355	ev_check_init (&cw, gcb);
1356	ev_check_start (&cw);
1357
1358	struct ev_idle iw;
1359	ev_idle_init (&iw, gcb);
1360	ev_idle_start (&iw);
1361
1362	ev_loop (0);
1363
1364	return 0;
1365	}
1366
1367	#endif
1368
1369
1370
1371

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Comparing libev/ev.c (file contents): Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs. Revision 1.83 by root, Fri Nov 9 21:48:23 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.52 by root, Sat Nov 3 22:10:39 2007 UTC vs.
Revision 1.83 by root, Fri Nov 9 21:48:23 2007 UTC