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

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.89 by root, Sat Nov 10 19:48:44 2007 UTC

…		…
26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY	26	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT	27	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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
		32	#ifdef __cplusplus
		33	extern "C" {
		34	#endif
		35
31	#ifndef EV_STANDALONE	36	#ifndef EV_STANDALONE
32	# include "config.h"	37	# include "config.h"
		38
		39	# if HAVE_CLOCK_GETTIME
		40	# define EV_USE_MONOTONIC 1
		41	# define EV_USE_REALTIME 1
		42	# endif
		43
		44	# if HAVE_SELECT && HAVE_SYS_SELECT_H
		45	# define EV_USE_SELECT 1
		46	# endif
		47
		48	# if HAVE_POLL && HAVE_POLL_H
		49	# define EV_USE_POLL 1
		50	# endif
		51
		52	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H
		53	# define EV_USE_EPOLL 1
		54	# endif
		55
		56	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H
		57	# define EV_USE_KQUEUE 1
		58	# endif
		59
33	#endif	60	#endif
34		61
35	#include <math.h>	62	#include <math.h>
36	#include <stdlib.h>	63	#include <stdlib.h>
37	#include <unistd.h>
38	#include <fcntl.h>	64	#include <fcntl.h>
39	#include <signal.h>
40	#include <stddef.h>	65	#include <stddef.h>
41		66
42	#include <stdio.h>	67	#include <stdio.h>
43		68
44	#include <assert.h>	69	#include <assert.h>
45	#include <errno.h>	70	#include <errno.h>
46	#include <sys/types.h>	71	#include <sys/types.h>
		72	#include <time.h>
		73
		74	#include <signal.h>
		75
47	#ifndef WIN32	76	#ifndef WIN32
		77	# include <unistd.h>
		78	# include <sys/time.h>
48	# include <sys/wait.h>	79	# include <sys/wait.h>
49	#endif	80	#endif
50	#include <sys/time.h>
51	#include <time.h>
52
53	/**/	81	/**/
54		82
55	#ifndef EV_USE_MONOTONIC	83	#ifndef EV_USE_MONOTONIC
56	# define EV_USE_MONOTONIC 1	84	# define EV_USE_MONOTONIC 1
57	#endif	85	#endif
58		86
59	#ifndef EV_USE_SELECT	87	#ifndef EV_USE_SELECT
60	# define EV_USE_SELECT 1	88	# define EV_USE_SELECT 1
61	#endif	89	#endif
62		90
63	#ifndef EV_USEV_POLL	91	#ifndef EV_USE_POLL
64	# define EV_USEV_POLL 0 /* poll is usually slower than select, and not as well tested */	92	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */
65	#endif	93	#endif
66		94
67	#ifndef EV_USE_EPOLL	95	#ifndef EV_USE_EPOLL
68	# define EV_USE_EPOLL 0	96	# define EV_USE_EPOLL 0
69	#endif	97	#endif
70		98
71	#ifndef EV_USE_KQUEUE	99	#ifndef EV_USE_KQUEUE
72	# define EV_USE_KQUEUE 0	100	# define EV_USE_KQUEUE 0
		101	#endif
		102
		103	#ifndef EV_USE_WIN32
		104	# ifdef WIN32
		105	# define EV_USE_WIN32 0 /* it does not exist, use select */
		106	# undef EV_USE_SELECT
		107	# define EV_USE_SELECT 1
		108	# else
		109	# define EV_USE_WIN32 0
		110	# endif
73	#endif	111	#endif
74		112
75	#ifndef EV_USE_REALTIME	113	#ifndef EV_USE_REALTIME
76	# define EV_USE_REALTIME 1	114	# define EV_USE_REALTIME 1
77	#endif	115	#endif
…		…
93	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	131	#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) */	132	#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 */	133	#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 */	134	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
97		135
		136	#ifdef EV_H
		137	# include EV_H
		138	#else
98	#include "ev.h"	139	# include "ev.h"
		140	#endif
99		141
100	#if __GNUC__ >= 3	142	#if __GNUC__ >= 3
101	# define expect(expr,value) __builtin_expect ((expr),(value))	143	# define expect(expr,value) __builtin_expect ((expr),(value))
102	# define inline inline	144	# define inline inline
103	#else	145	#else
…		…
115	typedef struct ev_watcher_list *WL;	157	typedef struct ev_watcher_list *WL;
116	typedef struct ev_watcher_time *WT;	158	typedef struct ev_watcher_time *WT;
117		159
118	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	160	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
119		161
		162	#include "ev_win32.c"
		163
120	/*****************************************************************************/	164	/*****************************************************************************/
121		165
		166	static void (syserr_cb)(const char msg);
		167
		168	void ev_set_syserr_cb (void (cb)(const char msg))
		169	{
		170	syserr_cb = cb;
		171	}
		172
		173	static void
		174	syserr (const char *msg)
		175	{
		176	if (!msg)
		177	msg = "(libev) system error";
		178
		179	if (syserr_cb)
		180	syserr_cb (msg);
		181	else
		182	{
		183	perror (msg);
		184	abort ();
		185	}
		186	}
		187
		188	static void (alloc)(void *ptr, long size);
		189
		190	void ev_set_allocator (void (cb)(void *ptr, long size))
		191	{
		192	alloc = cb;
		193	}
		194
		195	static void *
		196	ev_realloc (void *ptr, long size)
		197	{
		198	ptr = alloc ? alloc (ptr, size) : realloc (ptr, size);
		199
		200	if (!ptr && size)
		201	{
		202	fprintf (stderr, "libev: cannot allocate %ld bytes, aborting.", size);
		203	abort ();
		204	}
		205
		206	return ptr;
		207	}
		208
		209	#define ev_malloc(size) ev_realloc (0, (size))
		210	#define ev_free(ptr) ev_realloc ((ptr), 0)
		211
		212	/*****************************************************************************/
		213
122	typedef struct	214	typedef struct
123	{	215	{
124	struct ev_watcher_list *head;	216	WL head;
125	unsigned char events;	217	unsigned char events;
126	unsigned char reify;	218	unsigned char reify;
127	} ANFD;	219	} ANFD;
128		220
129	typedef struct	221	typedef struct
130	{	222	{
131	W w;	223	W w;
132	int events;	224	int events;
133	} ANPENDING;	225	} ANPENDING;
134		226
135	#ifdef EV_MULTIPLICITY	227	#if EV_MULTIPLICITY
136		228
137	struct ev_loop	229	struct ev_loop
138	{	230	{
		231	ev_tstamp ev_rt_now;
139	# define VAR(name,decl) decl;	232	#define VAR(name,decl) decl;
140	# include "ev_vars.h"	233	#include "ev_vars.h"
141	};
142	# undef VAR	234	#undef VAR
		235	};
143	# include "ev_wrap.h"	236	#include "ev_wrap.h"
		237
		238	struct ev_loop default_loop_struct;
		239	static struct ev_loop *default_loop;
144		240
145	#else	241	#else
146		242
		243	ev_tstamp ev_rt_now;
147	# define VAR(name,decl) static decl;	244	#define VAR(name,decl) static decl;
148	# include "ev_vars.h"	245	#include "ev_vars.h"
149	# undef VAR	246	#undef VAR
		247
		248	static int default_loop;
150		249
151	#endif	250	#endif
152		251
153	/*****************************************************************************/	252	/*****************************************************************************/
154		253
…		…
179	#endif	278	#endif
180		279
181	return ev_time ();	280	return ev_time ();
182	}	281	}
183		282
		283	#if EV_MULTIPLICITY
184	ev_tstamp	284	ev_tstamp
185	ev_now (EV_P)	285	ev_now (EV_P)
186	{	286	{
187	return rt_now;	287	return ev_rt_now;
188	}	288	}
		289	#endif
189		290
190	#define array_roundsize(base,n) ((n) \| 4 & ~3)	291	#define array_roundsize(type,n) ((n) \| 4 & ~3)
191		292
192	#define array_needsize(base,cur,cnt,init) \	293	#define array_needsize(type,base,cur,cnt,init) \
193	if (expect_false ((cnt) > cur)) \	294	if (expect_false ((cnt) > cur)) \
194	{ \	295	{ \
195	int newcnt = cur; \	296	int newcnt = cur; \
196	do \	297	do \
197	{ \	298	{ \
198	newcnt = array_roundsize (base, newcnt << 1); \	299	newcnt = array_roundsize (type, newcnt << 1); \
199	} \	300	} \
200	while ((cnt) > newcnt); \	301	while ((cnt) > newcnt); \
201	\	302	\
202	base = realloc (base, sizeof (base) (newcnt)); \	303	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
203	init (base + cur, newcnt - cur); \	304	init (base + cur, newcnt - cur); \
204	cur = newcnt; \	305	cur = newcnt; \
205	}	306	}
		307
		308	#define array_slim(type,stem) \
		309	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
		310	{ \
		311	stem ## max = array_roundsize (stem ## cnt >> 1); \
		312	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
		313	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
		314	}
		315
		316	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
		317	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
		318	#define array_free_microshit(stem) \
		319	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
		320
		321	#define array_free(stem, idx) \
		322	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
206		323
207	/*****************************************************************************/	324	/*****************************************************************************/
208		325
209	static void	326	static void
210	anfds_init (ANFD *base, int count)	327	anfds_init (ANFD *base, int count)
…		…
217		334
218	++base;	335	++base;
219	}	336	}
220	}	337	}
221		338
222	static void	339	void
223	event (EV_P_ W w, int events)	340	ev_feed_event (EV_P_ void *w, int revents)
224	{	341	{
		342	W w_ = (W)w;
		343
225	if (w->pending)	344	if (w_->pending)
226	{	345	{
227	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	346	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
228	return;	347	return;
229	}	348	}
230		349
231	w->pending = ++pendingcnt [ABSPRI (w)];	350	w_->pending = ++pendingcnt [ABSPRI (w_)];
232	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	351	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], (void));
233	pendings [ABSPRI (w)][w->pending - 1].w = w;	352	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
234	pendings [ABSPRI (w)][w->pending - 1].events = events;	353	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
235	}	354	}
236		355
237	static void	356	static void
238	queue_events (EV_P_ W *events, int eventcnt, int type)	357	queue_events (EV_P_ W *events, int eventcnt, int type)
239	{	358	{
240	int i;	359	int i;
241		360
242	for (i = 0; i < eventcnt; ++i)	361	for (i = 0; i < eventcnt; ++i)
243	event (EV_A_ events [i], type);	362	ev_feed_event (EV_A_ events [i], type);
244	}	363	}
245		364
246	static void	365	inline void
247	fd_event (EV_P_ int fd, int events)	366	fd_event (EV_P_ int fd, int revents)
248	{	367	{
249	ANFD *anfd = anfds + fd;	368	ANFD *anfd = anfds + fd;
250	struct ev_io *w;	369	struct ev_io *w;
251		370
252	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	371	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
253	{	372	{
254	int ev = w->events & events;	373	int ev = w->events & revents;
255		374
256	if (ev)	375	if (ev)
257	event (EV_A_ (W)w, ev);	376	ev_feed_event (EV_A_ (W)w, ev);
258	}	377	}
		378	}
		379
		380	void
		381	ev_feed_fd_event (EV_P_ int fd, int revents)
		382	{
		383	fd_event (EV_A_ fd, revents);
259	}	384	}
260		385
261	/*****************************************************************************/	386	/*****************************************************************************/
262		387
263	static void	388	static void
…		…
276	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	401	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
277	events \|= w->events;	402	events \|= w->events;
278		403
279	anfd->reify = 0;	404	anfd->reify = 0;
280		405
281	if (anfd->events != events)
282	{
283	method_modify (EV_A_ fd, anfd->events, events);	406	method_modify (EV_A_ fd, anfd->events, events);
284	anfd->events = events;	407	anfd->events = events;
285	}
286	}	408	}
287		409
288	fdchangecnt = 0;	410	fdchangecnt = 0;
289	}	411	}
290		412
291	static void	413	static void
292	fd_change (EV_P_ int fd)	414	fd_change (EV_P_ int fd)
293	{	415	{
294	if (anfds [fd].reify \|\| fdchangecnt < 0)	416	if (anfds [fd].reify)
295	return;	417	return;
296		418
297	anfds [fd].reify = 1;	419	anfds [fd].reify = 1;
298		420
299	++fdchangecnt;	421	++fdchangecnt;
300	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	422	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, (void));
301	fdchanges [fdchangecnt - 1] = fd;	423	fdchanges [fdchangecnt - 1] = fd;
302	}	424	}
303		425
304	static void	426	static void
305	fd_kill (EV_P_ int fd)	427	fd_kill (EV_P_ int fd)
…		…
307	struct ev_io *w;	429	struct ev_io *w;
308		430
309	while ((w = (struct ev_io *)anfds [fd].head))	431	while ((w = (struct ev_io *)anfds [fd].head))
310	{	432	{
311	ev_io_stop (EV_A_ w);	433	ev_io_stop (EV_A_ w);
312	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	434	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
313	}	435	}
		436	}
		437
		438	static int
		439	fd_valid (int fd)
		440	{
		441	#ifdef WIN32
		442	return !!win32_get_osfhandle (fd);
		443	#else
		444	return fcntl (fd, F_GETFD) != -1;
		445	#endif
314	}	446	}
315		447
316	/* called on EBADF to verify fds */	448	/* called on EBADF to verify fds */
317	static void	449	static void
318	fd_ebadf (EV_P)	450	fd_ebadf (EV_P)
319	{	451	{
320	int fd;	452	int fd;
321		453
322	for (fd = 0; fd < anfdmax; ++fd)	454	for (fd = 0; fd < anfdmax; ++fd)
323	if (anfds [fd].events)	455	if (anfds [fd].events)
324	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	456	if (!fd_valid (fd) == -1 && errno == EBADF)
325	fd_kill (EV_A_ fd);	457	fd_kill (EV_A_ fd);
326	}	458	}
327		459
328	/* called on ENOMEM in select/poll to kill some fds and retry */	460	/* called on ENOMEM in select/poll to kill some fds and retry */
329	static void	461	static void
330	fd_enomem (EV_P)	462	fd_enomem (EV_P)
331	{	463	{
332	int fd = anfdmax;	464	int fd;
333		465
334	while (fd--)	466	for (fd = anfdmax; fd--; )
335	if (anfds [fd].events)	467	if (anfds [fd].events)
336	{	468	{
337	close (fd);
338	fd_kill (EV_A_ fd);	469	fd_kill (EV_A_ fd);
339	return;	470	return;
340	}	471	}
341	}	472	}
342		473
		474	/* usually called after fork if method needs to re-arm all fds from scratch */
		475	static void
		476	fd_rearm_all (EV_P)
		477	{
		478	int fd;
		479
		480	/* this should be highly optimised to not do anything but set a flag */
		481	for (fd = 0; fd < anfdmax; ++fd)
		482	if (anfds [fd].events)
		483	{
		484	anfds [fd].events = 0;
		485	fd_change (EV_A_ fd);
		486	}
		487	}
		488
343	/*****************************************************************************/	489	/*****************************************************************************/
344		490
345	static void	491	static void
346	upheap (WT *heap, int k)	492	upheap (WT *heap, int k)
347	{	493	{
348	WT w = heap [k];	494	WT w = heap [k];
349		495
350	while (k && heap [k >> 1]->at > w->at)	496	while (k && heap [k >> 1]->at > w->at)
351	{	497	{
352	heap [k] = heap [k >> 1];	498	heap [k] = heap [k >> 1];
353	heap [k]->active = k + 1;	499	((W)heap [k])->active = k + 1;
354	k >>= 1;	500	k >>= 1;
355	}	501	}
356		502
357	heap [k] = w;	503	heap [k] = w;
358	heap [k]->active = k + 1;	504	((W)heap [k])->active = k + 1;
359		505
360	}	506	}
361		507
362	static void	508	static void
363	downheap (WT *heap, int N, int k)	509	downheap (WT *heap, int N, int k)
…		…
373		519
374	if (w->at <= heap [j]->at)	520	if (w->at <= heap [j]->at)
375	break;	521	break;
376		522
377	heap [k] = heap [j];	523	heap [k] = heap [j];
378	heap [k]->active = k + 1;	524	((W)heap [k])->active = k + 1;
379	k = j;	525	k = j;
380	}	526	}
381		527
382	heap [k] = w;	528	heap [k] = w;
383	heap [k]->active = k + 1;	529	((W)heap [k])->active = k + 1;
		530	}
		531
		532	inline void
		533	adjustheap (WT *heap, int N, int k, ev_tstamp at)
		534	{
		535	ev_tstamp old_at = heap [k]->at;
		536	heap [k]->at = at;
		537
		538	if (old_at < at)
		539	downheap (heap, N, k);
		540	else
		541	upheap (heap, k);
384	}	542	}
385		543
386	/*****************************************************************************/	544	/*****************************************************************************/
387		545
388	typedef struct	546	typedef struct
389	{	547	{
390	struct ev_watcher_list *head;	548	WL head;
391	sig_atomic_t volatile gotsig;	549	sig_atomic_t volatile gotsig;
392	} ANSIG;	550	} ANSIG;
393		551
394	static ANSIG *signals;	552	static ANSIG *signals;
395	static int signalmax;	553	static int signalmax;
396		554
397	static int sigpipe [2];	555	static int sigpipe [2];
398	static sig_atomic_t volatile gotsig;	556	static sig_atomic_t volatile gotsig;
		557	static struct ev_io sigev;
399		558
400	static void	559	static void
401	signals_init (ANSIG *base, int count)	560	signals_init (ANSIG *base, int count)
402	{	561	{
403	while (count--)	562	while (count--)
…		…
410	}	569	}
411		570
412	static void	571	static void
413	sighandler (int signum)	572	sighandler (int signum)
414	{	573	{
		574	#if WIN32
		575	signal (signum, sighandler);
		576	#endif
		577
415	signals [signum - 1].gotsig = 1;	578	signals [signum - 1].gotsig = 1;
416		579
417	if (!gotsig)	580	if (!gotsig)
418	{	581	{
419	int old_errno = errno;	582	int old_errno = errno;
420	gotsig = 1;	583	gotsig = 1;
		584	#ifdef WIN32
		585	send (sigpipe [1], &signum, 1, MSG_DONTWAIT);
		586	#else
421	write (sigpipe [1], &signum, 1);	587	write (sigpipe [1], &signum, 1);
		588	#endif
422	errno = old_errno;	589	errno = old_errno;
423	}	590	}
424	}	591	}
425		592
		593	void
		594	ev_feed_signal_event (EV_P_ int signum)
		595	{
		596	WL w;
		597
		598	#if EV_MULTIPLICITY
		599	assert (("feeding signal events is only supported in the default loop", loop == default_loop));
		600	#endif
		601
		602	--signum;
		603
		604	if (signum < 0 \|\| signum >= signalmax)
		605	return;
		606
		607	signals [signum].gotsig = 0;
		608
		609	for (w = signals [signum].head; w; w = w->next)
		610	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		611	}
		612
426	static void	613	static void
427	sigcb (EV_P_ struct ev_io *iow, int revents)	614	sigcb (EV_P_ struct ev_io *iow, int revents)
428	{	615	{
429	struct ev_watcher_list *w;
430	int signum;	616	int signum;
431		617
		618	#ifdef WIN32
		619	recv (sigpipe [0], &revents, 1, MSG_DONTWAIT);
		620	#else
432	read (sigpipe [0], &revents, 1);	621	read (sigpipe [0], &revents, 1);
		622	#endif
433	gotsig = 0;	623	gotsig = 0;
434		624
435	for (signum = signalmax; signum--; )	625	for (signum = signalmax; signum--; )
436	if (signals [signum].gotsig)	626	if (signals [signum].gotsig)
437	{	627	ev_feed_signal_event (EV_A_ signum + 1);
438	signals [signum].gotsig = 0;
439
440	for (w = signals [signum].head; w; w = w->next)
441	event (EV_A_ (W)w, EV_SIGNAL);
442	}
443	}	628	}
444		629
445	static void	630	static void
446	siginit (EV_P)	631	siginit (EV_P)
447	{	632	{
…		…
459	ev_unref (EV_A); /* child watcher should not keep loop alive */	644	ev_unref (EV_A); /* child watcher should not keep loop alive */
460	}	645	}
461		646
462	/*****************************************************************************/	647	/*****************************************************************************/
463		648
		649	static struct ev_child *childs [PID_HASHSIZE];
		650
464	#ifndef WIN32	651	#ifndef WIN32
		652
		653	static struct ev_signal childev;
465		654
466	#ifndef WCONTINUED	655	#ifndef WCONTINUED
467	# define WCONTINUED 0	656	# define WCONTINUED 0
468	#endif	657	#endif
469		658
…		…
473	struct ev_child *w;	662	struct ev_child *w;
474		663
475	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)	664	for (w = (struct ev_child )childs [chain & (PID_HASHSIZE - 1)]; w; w = (struct ev_child )((WL)w)->next)
476	if (w->pid == pid \|\| !w->pid)	665	if (w->pid == pid \|\| !w->pid)
477	{	666	{
478	w->priority = sw->priority; /* need to do it now */	667	ev_priority (w) = ev_priority (sw); /* need to do it now */
479	w->rpid = pid;	668	w->rpid = pid;
480	w->rstatus = status;	669	w->rstatus = status;
481	event (EV_A_ (W)w, EV_CHILD);	670	ev_feed_event (EV_A_ (W)w, EV_CHILD);
482	}	671	}
483	}	672	}
484		673
485	static void	674	static void
486	childcb (EV_P_ struct ev_signal *sw, int revents)	675	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
488	int pid, status;	677	int pid, status;
489		678
490	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	679	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
491	{	680	{
492	/* make sure we are called again until all childs have been reaped */	681	/* make sure we are called again until all childs have been reaped */
493	event (EV_A_ (W)sw, EV_SIGNAL);	682	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
494		683
495	child_reap (EV_A_ sw, pid, pid, status);	684	child_reap (EV_A_ sw, pid, pid, status);
496	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	685	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
497	}	686	}
498	}	687	}
…		…
505	# include "ev_kqueue.c"	694	# include "ev_kqueue.c"
506	#endif	695	#endif
507	#if EV_USE_EPOLL	696	#if EV_USE_EPOLL
508	# include "ev_epoll.c"	697	# include "ev_epoll.c"
509	#endif	698	#endif
510	#if EV_USEV_POLL	699	#if EV_USE_POLL
511	# include "ev_poll.c"	700	# include "ev_poll.c"
512	#endif	701	#endif
513	#if EV_USE_SELECT	702	#if EV_USE_SELECT
514	# include "ev_select.c"	703	# include "ev_select.c"
515	#endif	704	#endif
…		…
555	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	744	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
556	have_monotonic = 1;	745	have_monotonic = 1;
557	}	746	}
558	#endif	747	#endif
559		748
560	rt_now = ev_time ();	749	ev_rt_now = ev_time ();
561	mn_now = get_clock ();	750	mn_now = get_clock ();
562	now_floor = mn_now;	751	now_floor = mn_now;
563	rtmn_diff = rt_now - mn_now;	752	rtmn_diff = ev_rt_now - mn_now;
564
565	if (pipe (sigpipe))
566	return 0;
567		753
568	if (methods == EVMETHOD_AUTO)	754	if (methods == EVMETHOD_AUTO)
569	if (!enable_secure () && getenv ("LIBmethodS"))	755	if (!enable_secure () && getenv ("LIBEV_METHODS"))
570	methods = atoi (getenv ("LIBmethodS"));	756	methods = atoi (getenv ("LIBEV_METHODS"));
571	else	757	else
572	methods = EVMETHOD_ANY;	758	methods = EVMETHOD_ANY;
573		759
574	method = 0;	760	method = 0;
		761	#if EV_USE_WIN32
		762	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
		763	#endif
575	#if EV_USE_KQUEUE	764	#if EV_USE_KQUEUE
576	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	765	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);
577	#endif	766	#endif
578	#if EV_USE_EPOLL	767	#if EV_USE_EPOLL
579	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	768	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);
580	#endif	769	#endif
581	#if EV_USEV_POLL	770	#if EV_USE_POLL
582	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	771	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);
583	#endif	772	#endif
584	#if EV_USE_SELECT	773	#if EV_USE_SELECT
585	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	774	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);
586	#endif	775	#endif
587		776
		777	ev_init (&sigev, sigcb);
		778	ev_set_priority (&sigev, EV_MAXPRI);
		779	}
		780	}
		781
		782	void
		783	loop_destroy (EV_P)
		784	{
		785	int i;
		786
		787	#if EV_USE_WIN32
		788	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
		789	#endif
		790	#if EV_USE_KQUEUE
		791	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
		792	#endif
		793	#if EV_USE_EPOLL
		794	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
		795	#endif
		796	#if EV_USE_POLL
		797	if (method == EVMETHOD_POLL ) poll_destroy (EV_A);
		798	#endif
		799	#if EV_USE_SELECT
		800	if (method == EVMETHOD_SELECT) select_destroy (EV_A);
		801	#endif
		802
		803	for (i = NUMPRI; i--; )
		804	array_free (pending, [i]);
		805
		806	/* have to use the microsoft-never-gets-it-right macro */
		807	array_free_microshit (fdchange);
		808	array_free_microshit (timer);
		809	array_free_microshit (periodic);
		810	array_free_microshit (idle);
		811	array_free_microshit (prepare);
		812	array_free_microshit (check);
		813
		814	method = 0;
		815	}
		816
		817	static void
		818	loop_fork (EV_P)
		819	{
		820	#if EV_USE_EPOLL
		821	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
		822	#endif
		823	#if EV_USE_KQUEUE
		824	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		825	#endif
		826
		827	if (ev_is_active (&sigev))
		828	{
		829	/* default loop */
		830
		831	ev_ref (EV_A);
		832	ev_io_stop (EV_A_ &sigev);
		833	close (sigpipe [0]);
		834	close (sigpipe [1]);
		835
		836	while (pipe (sigpipe))
		837	syserr ("(libev) error creating pipe");
		838
		839	siginit (EV_A);
		840	}
		841
		842	postfork = 0;
		843	}
		844
		845	#if EV_MULTIPLICITY
		846	struct ev_loop *
		847	ev_loop_new (int methods)
		848	{
		849	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
		850
		851	memset (loop, 0, sizeof (struct ev_loop));
		852
		853	loop_init (EV_A_ methods);
		854
		855	if (ev_method (EV_A))
		856	return loop;
		857
		858	return 0;
		859	}
		860
		861	void
		862	ev_loop_destroy (EV_P)
		863	{
		864	loop_destroy (EV_A);
		865	ev_free (loop);
		866	}
		867
		868	void
		869	ev_loop_fork (EV_P)
		870	{
		871	postfork = 1;
		872	}
		873
		874	#endif
		875
		876	#if EV_MULTIPLICITY
		877	struct ev_loop *
		878	#else
		879	int
		880	#endif
		881	ev_default_loop (int methods)
		882	{
		883	if (sigpipe [0] == sigpipe [1])
		884	if (pipe (sigpipe))
		885	return 0;
		886
		887	if (!default_loop)
		888	{
		889	#if EV_MULTIPLICITY
		890	struct ev_loop *loop = default_loop = &default_loop_struct;
		891	#else
		892	default_loop = 1;
		893	#endif
		894
		895	loop_init (EV_A_ methods);
		896
588	if (method)	897	if (ev_method (EV_A))
589	{	898	{
590	ev_watcher_init (&sigev, sigcb);
591	ev_set_priority (&sigev, EV_MAXPRI);
592	siginit (EV_A);	899	siginit (EV_A);
593		900
594	#ifndef WIN32	901	#ifndef WIN32
595	ev_signal_init (&childev, childcb, SIGCHLD);	902	ev_signal_init (&childev, childcb, SIGCHLD);
596	ev_set_priority (&childev, EV_MAXPRI);	903	ev_set_priority (&childev, EV_MAXPRI);
597	ev_signal_start (EV_A_ &childev);	904	ev_signal_start (EV_A_ &childev);
598	ev_unref (EV_A); /* child watcher should not keep loop alive */	905	ev_unref (EV_A); /* child watcher should not keep loop alive */
599	#endif	906	#endif
600	}	907	}
		908	else
		909	default_loop = 0;
601	}	910	}
602		911
603	return method;	912	return default_loop;
604	}	913	}
605		914
		915	void
		916	ev_default_destroy (void)
		917	{
606	#ifdef EV_MULTIPLICITY	918	#if EV_MULTIPLICITY
607		919	struct ev_loop *loop = default_loop;
608	struct ev_loop *
609	ev_loop_new (int methods)
610	{
611	struct ev_loop loop = (struct ev_loop )calloc (1, sizeof (struct ev_loop));
612
613	loop_init (EV_A_ methods);
614
615	return loop;
616	}
617
618	void
619	ev_loop_delete (EV_P)
620	{
621	/TODO/
622	free (loop);
623	}
624
625	#else
626
627	int
628	ev_init (int methods)
629	{
630	loop_init ();
631	}
632
633	#endif	920	#endif
		921
		922	#ifndef WIN32
		923	ev_ref (EV_A); /* child watcher */
		924	ev_signal_stop (EV_A_ &childev);
		925	#endif
		926
		927	ev_ref (EV_A); /* signal watcher */
		928	ev_io_stop (EV_A_ &sigev);
		929
		930	close (sigpipe [0]); sigpipe [0] = 0;
		931	close (sigpipe [1]); sigpipe [1] = 0;
		932
		933	loop_destroy (EV_A);
		934	}
		935
		936	void
		937	ev_default_fork (void)
		938	{
		939	#if EV_MULTIPLICITY
		940	struct ev_loop *loop = default_loop;
		941	#endif
		942
		943	if (method)
		944	postfork = 1;
		945	}
634		946
635	/*****************************************************************************/	947	/*****************************************************************************/
636		948
637	void	949	static int
638	ev_fork_prepare (void)	950	any_pending (EV_P)
639	{	951	{
640	/* nop */	952	int pri;
641	}
642		953
643	void	954	for (pri = NUMPRI; pri--; )
644	ev_fork_parent (void)	955	if (pendingcnt [pri])
645	{	956	return 1;
646	/* nop */
647	}
648		957
649	void	958	return 0;
650	ev_fork_child (void)
651	{
652	/TODO/
653	#if !EV_MULTIPLICITY
654	#if EV_USE_EPOLL
655	if (method == EVMETHOD_EPOLL)
656	epoll_postfork_child (EV_A);
657	#endif
658
659	ev_io_stop (EV_A_ &sigev);
660	close (sigpipe [0]);
661	close (sigpipe [1]);
662	pipe (sigpipe);
663	siginit (EV_A);
664	#endif
665	}	959	}
666
667	/*****************************************************************************/
668		960
669	static void	961	static void
670	call_pending (EV_P)	962	call_pending (EV_P)
671	{	963	{
672	int pri;	964	int pri;
…		…
677	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	969	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
678		970
679	if (p->w)	971	if (p->w)
680	{	972	{
681	p->w->pending = 0;	973	p->w->pending = 0;
682	p->w->cb (EV_A_ p->w, p->events);	974	EV_CB_INVOKE (p->w, p->events);
683	}	975	}
684	}	976	}
685	}	977	}
686		978
687	static void	979	static void
688	timers_reify (EV_P)	980	timers_reify (EV_P)
689	{	981	{
690	while (timercnt && timers [0]->at <= mn_now)	982	while (timercnt && ((WT)timers [0])->at <= mn_now)
691	{	983	{
692	struct ev_timer *w = timers [0];	984	struct ev_timer *w = timers [0];
		985
		986	assert (("inactive timer on timer heap detected", ev_is_active (w)));
693		987
694	/* first reschedule or stop timer */	988	/* first reschedule or stop timer */
695	if (w->repeat)	989	if (w->repeat)
696	{	990	{
697	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	991	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
698	w->at = mn_now + w->repeat;	992	((WT)w)->at = mn_now + w->repeat;
699	downheap ((WT *)timers, timercnt, 0);	993	downheap ((WT *)timers, timercnt, 0);
700	}	994	}
701	else	995	else
702	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	996	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
703		997
704	event (EV_A_ (W)w, EV_TIMEOUT);	998	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
705	}	999	}
706	}	1000	}
707		1001
708	static void	1002	static void
709	periodics_reify (EV_P)	1003	periodics_reify (EV_P)
710	{	1004	{
711	while (periodiccnt && periodics [0]->at <= rt_now)	1005	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
712	{	1006	{
713	struct ev_periodic *w = periodics [0];	1007	struct ev_periodic *w = periodics [0];
714		1008
		1009	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
		1010
715	/* first reschedule or stop timer */	1011	/* first reschedule or stop timer */
716	if (w->interval)	1012	if (w->reschedule_cb)
717	{	1013	{
		1014	ev_tstamp at = ((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1015
		1016	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1017	downheap ((WT *)periodics, periodiccnt, 0);
		1018	}
		1019	else if (w->interval)
		1020	{
718	w->at += floor ((rt_now - w->at) / w->interval + 1.) * w->interval;	1021	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
719	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", w->at > rt_now));	1022	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
720	downheap ((WT *)periodics, periodiccnt, 0);	1023	downheap ((WT *)periodics, periodiccnt, 0);
721	}	1024	}
722	else	1025	else
723	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1026	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
724		1027
725	event (EV_A_ (W)w, EV_PERIODIC);	1028	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
726	}	1029	}
727	}	1030	}
728		1031
729	static void	1032	static void
730	periodics_reschedule (EV_P)	1033	periodics_reschedule (EV_P)
…		…
734	/* adjust periodics after time jump */	1037	/* adjust periodics after time jump */
735	for (i = 0; i < periodiccnt; ++i)	1038	for (i = 0; i < periodiccnt; ++i)
736	{	1039	{
737	struct ev_periodic *w = periodics [i];	1040	struct ev_periodic *w = periodics [i];
738		1041
		1042	if (w->reschedule_cb)
		1043	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
739	if (w->interval)	1044	else if (w->interval)
740	{
741	ev_tstamp diff = ceil ((rt_now - w->at) / w->interval) * w->interval;	1045	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
742
743	if (fabs (diff) >= 1e-4)
744	{
745	ev_periodic_stop (EV_A_ w);
746	ev_periodic_start (EV_A_ w);
747
748	i = 0; /* restart loop, inefficient, but time jumps should be rare */
749	}
750	}
751	}	1046	}
		1047
		1048	/* now rebuild the heap */
		1049	for (i = periodiccnt >> 1; i--; )
		1050	downheap ((WT *)periodics, periodiccnt, i);
752	}	1051	}
753		1052
754	inline int	1053	inline int
755	time_update_monotonic (EV_P)	1054	time_update_monotonic (EV_P)
756	{	1055	{
757	mn_now = get_clock ();	1056	mn_now = get_clock ();
758		1057
759	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1058	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
760	{	1059	{
761	rt_now = rtmn_diff + mn_now;	1060	ev_rt_now = rtmn_diff + mn_now;
762	return 0;	1061	return 0;
763	}	1062	}
764	else	1063	else
765	{	1064	{
766	now_floor = mn_now;	1065	now_floor = mn_now;
767	rt_now = ev_time ();	1066	ev_rt_now = ev_time ();
768	return 1;	1067	return 1;
769	}	1068	}
770	}	1069	}
771		1070
772	static void	1071	static void
…		…
781	{	1080	{
782	ev_tstamp odiff = rtmn_diff;	1081	ev_tstamp odiff = rtmn_diff;
783		1082
784	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1083	for (i = 4; --i; ) /* loop a few times, before making important decisions */
785	{	1084	{
786	rtmn_diff = rt_now - mn_now;	1085	rtmn_diff = ev_rt_now - mn_now;
787		1086
788	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1087	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
789	return; /* all is well */	1088	return; /* all is well */
790		1089
791	rt_now = ev_time ();	1090	ev_rt_now = ev_time ();
792	mn_now = get_clock ();	1091	mn_now = get_clock ();
793	now_floor = mn_now;	1092	now_floor = mn_now;
794	}	1093	}
795		1094
796	periodics_reschedule (EV_A);	1095	periodics_reschedule (EV_A);
…		…
799	}	1098	}
800	}	1099	}
801	else	1100	else
802	#endif	1101	#endif
803	{	1102	{
804	rt_now = ev_time ();	1103	ev_rt_now = ev_time ();
805		1104
806	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1105	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
807	{	1106	{
808	periodics_reschedule (EV_A);	1107	periodics_reschedule (EV_A);
809		1108
810	/* adjust timers. this is easy, as the offset is the same for all */	1109	/* adjust timers. this is easy, as the offset is the same for all */
811	for (i = 0; i < timercnt; ++i)	1110	for (i = 0; i < timercnt; ++i)
812	timers [i]->at += rt_now - mn_now;	1111	((WT)timers [i])->at += ev_rt_now - mn_now;
813	}	1112	}
814		1113
815	mn_now = rt_now;	1114	mn_now = ev_rt_now;
816	}	1115	}
817	}	1116	}
818		1117
819	void	1118	void
820	ev_ref (EV_P)	1119	ev_ref (EV_P)
…		…
843	{	1142	{
844	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1143	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
845	call_pending (EV_A);	1144	call_pending (EV_A);
846	}	1145	}
847		1146
		1147	/* we might have forked, so reify kernel state if necessary */
		1148	if (expect_false (postfork))
		1149	loop_fork (EV_A);
		1150
848	/* update fd-related kernel structures */	1151	/* update fd-related kernel structures */
849	fd_reify (EV_A);	1152	fd_reify (EV_A);
850		1153
851	/* calculate blocking time */	1154	/* calculate blocking time */
852		1155
853	/* we only need this for !monotonic clockor timers, but as we basically	1156	/* we only need this for !monotonic clock or timers, but as we basically
854	always have timers, we just calculate it always */	1157	always have timers, we just calculate it always */
855	#if EV_USE_MONOTONIC	1158	#if EV_USE_MONOTONIC
856	if (expect_true (have_monotonic))	1159	if (expect_true (have_monotonic))
857	time_update_monotonic (EV_A);	1160	time_update_monotonic (EV_A);
858	else	1161	else
859	#endif	1162	#endif
860	{	1163	{
861	rt_now = ev_time ();	1164	ev_rt_now = ev_time ();
862	mn_now = rt_now;	1165	mn_now = ev_rt_now;
863	}	1166	}
864		1167
865	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1168	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
866	block = 0.;	1169	block = 0.;
867	else	1170	else
868	{	1171	{
869	block = MAX_BLOCKTIME;	1172	block = MAX_BLOCKTIME;
870		1173
871	if (timercnt)	1174	if (timercnt)
872	{	1175	{
873	ev_tstamp to = timers [0]->at - mn_now + method_fudge;	1176	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
874	if (block > to) block = to;	1177	if (block > to) block = to;
875	}	1178	}
876		1179
877	if (periodiccnt)	1180	if (periodiccnt)
878	{	1181	{
879	ev_tstamp to = periodics [0]->at - rt_now + method_fudge;	1182	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
880	if (block > to) block = to;	1183	if (block > to) block = to;
881	}	1184	}
882		1185
883	if (block < 0.) block = 0.;	1186	if (block < 0.) block = 0.;
884	}	1187	}
885		1188
886	method_poll (EV_A_ block);	1189	method_poll (EV_A_ block);
887		1190
888	/* update rt_now, do magic */	1191	/* update ev_rt_now, do magic */
889	time_update (EV_A);	1192	time_update (EV_A);
890		1193
891	/* queue pending timers and reschedule them */	1194	/* queue pending timers and reschedule them */
892	timers_reify (EV_A); /* relative timers called last */	1195	timers_reify (EV_A); /* relative timers called last */
893	periodics_reify (EV_A); /* absolute timers called first */	1196	periodics_reify (EV_A); /* absolute timers called first */
894		1197
895	/* queue idle watchers unless io or timers are pending */	1198	/* queue idle watchers unless io or timers are pending */
896	if (!pendingcnt)	1199	if (idlecnt && !any_pending (EV_A))
897	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1200	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
898		1201
899	/* queue check watchers, to be executed first */	1202	/* queue check watchers, to be executed first */
900	if (checkcnt)	1203	if (checkcnt)
901	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1204	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
…		…
976	return;	1279	return;
977		1280
978	assert (("ev_io_start called with negative fd", fd >= 0));	1281	assert (("ev_io_start called with negative fd", fd >= 0));
979		1282
980	ev_start (EV_A_ (W)w, 1);	1283	ev_start (EV_A_ (W)w, 1);
981	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1284	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
982	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1285	wlist_add ((WL *)&anfds[fd].head, (WL)w);
983		1286
984	fd_change (EV_A_ fd);	1287	fd_change (EV_A_ fd);
985	}	1288	}
986		1289
…		…
989	{	1292	{
990	ev_clear_pending (EV_A_ (W)w);	1293	ev_clear_pending (EV_A_ (W)w);
991	if (!ev_is_active (w))	1294	if (!ev_is_active (w))
992	return;	1295	return;
993		1296
		1297	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1298
994	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1299	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
995	ev_stop (EV_A_ (W)w);	1300	ev_stop (EV_A_ (W)w);
996		1301
997	fd_change (EV_A_ w->fd);	1302	fd_change (EV_A_ w->fd);
998	}	1303	}
…		…
1001	ev_timer_start (EV_P_ struct ev_timer *w)	1306	ev_timer_start (EV_P_ struct ev_timer *w)
1002	{	1307	{
1003	if (ev_is_active (w))	1308	if (ev_is_active (w))
1004	return;	1309	return;
1005		1310
1006	w->at += mn_now;	1311	((WT)w)->at += mn_now;
1007		1312
1008	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1313	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1009		1314
1010	ev_start (EV_A_ (W)w, ++timercnt);	1315	ev_start (EV_A_ (W)w, ++timercnt);
1011	array_needsize (timers, timermax, timercnt, );	1316	array_needsize (struct ev_timer *, timers, timermax, timercnt, (void));
1012	timers [timercnt - 1] = w;	1317	timers [timercnt - 1] = w;
1013	upheap ((WT *)timers, timercnt - 1);	1318	upheap ((WT *)timers, timercnt - 1);
		1319
		1320	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1014	}	1321	}
1015		1322
1016	void	1323	void
1017	ev_timer_stop (EV_P_ struct ev_timer *w)	1324	ev_timer_stop (EV_P_ struct ev_timer *w)
1018	{	1325	{
1019	ev_clear_pending (EV_A_ (W)w);	1326	ev_clear_pending (EV_A_ (W)w);
1020	if (!ev_is_active (w))	1327	if (!ev_is_active (w))
1021	return;	1328	return;
1022		1329
		1330	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
		1331
1023	if (w->active < timercnt--)	1332	if (((W)w)->active < timercnt--)
1024	{	1333	{
1025	timers [w->active - 1] = timers [timercnt];	1334	timers [((W)w)->active - 1] = timers [timercnt];
1026	downheap ((WT *)timers, timercnt, w->active - 1);	1335	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1027	}	1336	}
1028		1337
1029	w->at = w->repeat;	1338	((WT)w)->at = w->repeat;
1030		1339
1031	ev_stop (EV_A_ (W)w);	1340	ev_stop (EV_A_ (W)w);
1032	}	1341	}
1033		1342
1034	void	1343	void
1035	ev_timer_again (EV_P_ struct ev_timer *w)	1344	ev_timer_again (EV_P_ struct ev_timer *w)
1036	{	1345	{
1037	if (ev_is_active (w))	1346	if (ev_is_active (w))
1038	{	1347	{
1039	if (w->repeat)	1348	if (w->repeat)
1040	{
1041	w->at = mn_now + w->repeat;
1042	downheap ((WT *)timers, timercnt, w->active - 1);	1349	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1, mn_now + w->repeat);
1043	}
1044	else	1350	else
1045	ev_timer_stop (EV_A_ w);	1351	ev_timer_stop (EV_A_ w);
1046	}	1352	}
1047	else if (w->repeat)	1353	else if (w->repeat)
1048	ev_timer_start (EV_A_ w);	1354	ev_timer_start (EV_A_ w);
…		…
1052	ev_periodic_start (EV_P_ struct ev_periodic *w)	1358	ev_periodic_start (EV_P_ struct ev_periodic *w)
1053	{	1359	{
1054	if (ev_is_active (w))	1360	if (ev_is_active (w))
1055	return;	1361	return;
1056		1362
		1363	if (w->reschedule_cb)
		1364	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1365	else if (w->interval)
		1366	{
1057	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1367	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1058
1059	/* this formula differs from the one in periodic_reify because we do not always round up */	1368	/* this formula differs from the one in periodic_reify because we do not always round up */
1060	if (w->interval)
1061	w->at += ceil ((rt_now - w->at) / w->interval) * w->interval;	1369	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1370	}
1062		1371
1063	ev_start (EV_A_ (W)w, ++periodiccnt);	1372	ev_start (EV_A_ (W)w, ++periodiccnt);
1064	array_needsize (periodics, periodicmax, periodiccnt, );	1373	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, (void));
1065	periodics [periodiccnt - 1] = w;	1374	periodics [periodiccnt - 1] = w;
1066	upheap ((WT *)periodics, periodiccnt - 1);	1375	upheap ((WT *)periodics, periodiccnt - 1);
		1376
		1377	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1067	}	1378	}
1068		1379
1069	void	1380	void
1070	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1381	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1071	{	1382	{
1072	ev_clear_pending (EV_A_ (W)w);	1383	ev_clear_pending (EV_A_ (W)w);
1073	if (!ev_is_active (w))	1384	if (!ev_is_active (w))
1074	return;	1385	return;
1075		1386
		1387	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
		1388
1076	if (w->active < periodiccnt--)	1389	if (((W)w)->active < periodiccnt--)
1077	{	1390	{
1078	periodics [w->active - 1] = periodics [periodiccnt];	1391	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1079	downheap ((WT *)periodics, periodiccnt, w->active - 1);	1392	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1080	}	1393	}
1081		1394
		1395	ev_stop (EV_A_ (W)w);
		1396	}
		1397
		1398	void
		1399	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1400	{
		1401	/* TODO: use adjustheap and recalculation */
		1402	ev_periodic_stop (EV_A_ w);
		1403	ev_periodic_start (EV_A_ w);
		1404	}
		1405
		1406	void
		1407	ev_idle_start (EV_P_ struct ev_idle *w)
		1408	{
		1409	if (ev_is_active (w))
		1410	return;
		1411
		1412	ev_start (EV_A_ (W)w, ++idlecnt);
		1413	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, (void));
		1414	idles [idlecnt - 1] = w;
		1415	}
		1416
		1417	void
		1418	ev_idle_stop (EV_P_ struct ev_idle *w)
		1419	{
		1420	ev_clear_pending (EV_A_ (W)w);
		1421	if (ev_is_active (w))
		1422	return;
		1423
		1424	idles [((W)w)->active - 1] = idles [--idlecnt];
		1425	ev_stop (EV_A_ (W)w);
		1426	}
		1427
		1428	void
		1429	ev_prepare_start (EV_P_ struct ev_prepare *w)
		1430	{
		1431	if (ev_is_active (w))
		1432	return;
		1433
		1434	ev_start (EV_A_ (W)w, ++preparecnt);
		1435	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, (void));
		1436	prepares [preparecnt - 1] = w;
		1437	}
		1438
		1439	void
		1440	ev_prepare_stop (EV_P_ struct ev_prepare *w)
		1441	{
		1442	ev_clear_pending (EV_A_ (W)w);
		1443	if (ev_is_active (w))
		1444	return;
		1445
		1446	prepares [((W)w)->active - 1] = prepares [--preparecnt];
		1447	ev_stop (EV_A_ (W)w);
		1448	}
		1449
		1450	void
		1451	ev_check_start (EV_P_ struct ev_check *w)
		1452	{
		1453	if (ev_is_active (w))
		1454	return;
		1455
		1456	ev_start (EV_A_ (W)w, ++checkcnt);
		1457	array_needsize (struct ev_check *, checks, checkmax, checkcnt, (void));
		1458	checks [checkcnt - 1] = w;
		1459	}
		1460
		1461	void
		1462	ev_check_stop (EV_P_ struct ev_check *w)
		1463	{
		1464	ev_clear_pending (EV_A_ (W)w);
		1465	if (ev_is_active (w))
		1466	return;
		1467
		1468	checks [((W)w)->active - 1] = checks [--checkcnt];
1082	ev_stop (EV_A_ (W)w);	1469	ev_stop (EV_A_ (W)w);
1083	}	1470	}
1084		1471
1085	#ifndef SA_RESTART	1472	#ifndef SA_RESTART
1086	# define SA_RESTART 0	1473	# define SA_RESTART 0
1087	#endif	1474	#endif
1088		1475
1089	void	1476	void
1090	ev_signal_start (EV_P_ struct ev_signal *w)	1477	ev_signal_start (EV_P_ struct ev_signal *w)
1091	{	1478	{
		1479	#if EV_MULTIPLICITY
		1480	assert (("signal watchers are only supported in the default loop", loop == default_loop));
		1481	#endif
1092	if (ev_is_active (w))	1482	if (ev_is_active (w))
1093	return;	1483	return;
1094		1484
1095	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1485	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1096		1486
1097	ev_start (EV_A_ (W)w, 1);	1487	ev_start (EV_A_ (W)w, 1);
1098	array_needsize (signals, signalmax, w->signum, signals_init);	1488	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1099	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1489	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1100		1490
1101	if (!w->next)	1491	if (!((WL)w)->next)
1102	{	1492	{
		1493	#if WIN32
		1494	signal (w->signum, sighandler);
		1495	#else
1103	struct sigaction sa;	1496	struct sigaction sa;
1104	sa.sa_handler = sighandler;	1497	sa.sa_handler = sighandler;
1105	sigfillset (&sa.sa_mask);	1498	sigfillset (&sa.sa_mask);
1106	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */	1499	sa.sa_flags = SA_RESTART; /* if restarting works we save one iteration */
1107	sigaction (w->signum, &sa, 0);	1500	sigaction (w->signum, &sa, 0);
		1501	#endif
1108	}	1502	}
1109	}	1503	}
1110		1504
1111	void	1505	void
1112	ev_signal_stop (EV_P_ struct ev_signal *w)	1506	ev_signal_stop (EV_P_ struct ev_signal *w)
…		…
1121	if (!signals [w->signum - 1].head)	1515	if (!signals [w->signum - 1].head)
1122	signal (w->signum, SIG_DFL);	1516	signal (w->signum, SIG_DFL);
1123	}	1517	}
1124		1518
1125	void	1519	void
1126	ev_idle_start (EV_P_ struct ev_idle *w)
1127	{
1128	if (ev_is_active (w))
1129	return;
1130
1131	ev_start (EV_A_ (W)w, ++idlecnt);
1132	array_needsize (idles, idlemax, idlecnt, );
1133	idles [idlecnt - 1] = w;
1134	}
1135
1136	void
1137	ev_idle_stop (EV_P_ struct ev_idle *w)
1138	{
1139	ev_clear_pending (EV_A_ (W)w);
1140	if (ev_is_active (w))
1141	return;
1142
1143	idles [w->active - 1] = idles [--idlecnt];
1144	ev_stop (EV_A_ (W)w);
1145	}
1146
1147	void
1148	ev_prepare_start (EV_P_ struct ev_prepare *w)
1149	{
1150	if (ev_is_active (w))
1151	return;
1152
1153	ev_start (EV_A_ (W)w, ++preparecnt);
1154	array_needsize (prepares, preparemax, preparecnt, );
1155	prepares [preparecnt - 1] = w;
1156	}
1157
1158	void
1159	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1160	{
1161	ev_clear_pending (EV_A_ (W)w);
1162	if (ev_is_active (w))
1163	return;
1164
1165	prepares [w->active - 1] = prepares [--preparecnt];
1166	ev_stop (EV_A_ (W)w);
1167	}
1168
1169	void
1170	ev_check_start (EV_P_ struct ev_check *w)
1171	{
1172	if (ev_is_active (w))
1173	return;
1174
1175	ev_start (EV_A_ (W)w, ++checkcnt);
1176	array_needsize (checks, checkmax, checkcnt, );
1177	checks [checkcnt - 1] = w;
1178	}
1179
1180	void
1181	ev_check_stop (EV_P_ struct ev_check *w)
1182	{
1183	ev_clear_pending (EV_A_ (W)w);
1184	if (ev_is_active (w))
1185	return;
1186
1187	checks [w->active - 1] = checks [--checkcnt];
1188	ev_stop (EV_A_ (W)w);
1189	}
1190
1191	void
1192	ev_child_start (EV_P_ struct ev_child *w)	1520	ev_child_start (EV_P_ struct ev_child *w)
1193	{	1521	{
		1522	#if EV_MULTIPLICITY
		1523	assert (("child watchers are only supported in the default loop", loop == default_loop));
		1524	#endif
1194	if (ev_is_active (w))	1525	if (ev_is_active (w))
1195	return;	1526	return;
1196		1527
1197	ev_start (EV_A_ (W)w, 1);	1528	ev_start (EV_A_ (W)w, 1);
1198	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1529	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
…		…
1225	void (cb)(int revents, void arg) = once->cb;	1556	void (cb)(int revents, void arg) = once->cb;
1226	void *arg = once->arg;	1557	void *arg = once->arg;
1227		1558
1228	ev_io_stop (EV_A_ &once->io);	1559	ev_io_stop (EV_A_ &once->io);
1229	ev_timer_stop (EV_A_ &once->to);	1560	ev_timer_stop (EV_A_ &once->to);
1230	free (once);	1561	ev_free (once);
1231		1562
1232	cb (revents, arg);	1563	cb (revents, arg);
1233	}	1564	}
1234		1565
1235	static void	1566	static void
…		…
1245	}	1576	}
1246		1577
1247	void	1578	void
1248	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1579	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1249	{	1580	{
1250	struct ev_once *once = malloc (sizeof (struct ev_once));	1581	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1251		1582
1252	if (!once)	1583	if (!once)
1253	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1584	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1254	else	1585	else
1255	{	1586	{
1256	once->cb = cb;	1587	once->cb = cb;
1257	once->arg = arg;	1588	once->arg = arg;
1258		1589
1259	ev_watcher_init (&once->io, once_cb_io);	1590	ev_init (&once->io, once_cb_io);
1260	if (fd >= 0)	1591	if (fd >= 0)
1261	{	1592	{
1262	ev_io_set (&once->io, fd, events);	1593	ev_io_set (&once->io, fd, events);
1263	ev_io_start (EV_A_ &once->io);	1594	ev_io_start (EV_A_ &once->io);
1264	}	1595	}
1265		1596
1266	ev_watcher_init (&once->to, once_cb_to);	1597	ev_init (&once->to, once_cb_to);
1267	if (timeout >= 0.)	1598	if (timeout >= 0.)
1268	{	1599	{
1269	ev_timer_set (&once->to, timeout, 0.);	1600	ev_timer_set (&once->to, timeout, 0.);
1270	ev_timer_start (EV_A_ &once->to);	1601	ev_timer_start (EV_A_ &once->to);
1271	}	1602	}
1272	}	1603	}
1273	}	1604	}
1274		1605
1275	/*****************************************************************************/	1606	#ifdef __cplusplus
1276
1277	#if 0
1278
1279	struct ev_io wio;
1280
1281	static void
1282	sin_cb (struct ev_io *w, int revents)
1283	{
1284	fprintf (stderr, "sin %d, revents %d\n", w->fd, revents);
1285	}	1607	}
1286
1287	static void
1288	ocb (struct ev_timer *w, int revents)
1289	{
1290	//fprintf (stderr, "timer %f,%f (%x) (%f) d%p\n", w->at, w->repeat, revents, w->at - ev_time (), w->data);
1291	ev_timer_stop (w);
1292	ev_timer_start (w);
1293	}
1294
1295	static void
1296	scb (struct ev_signal *w, int revents)
1297	{
1298	fprintf (stderr, "signal %x,%d\n", revents, w->signum);
1299	ev_io_stop (&wio);
1300	ev_io_start (&wio);
1301	}
1302
1303	static void
1304	gcb (struct ev_signal *w, int revents)
1305	{
1306	fprintf (stderr, "generic %x\n", revents);
1307
1308	}
1309
1310	int main (void)
1311	{
1312	ev_init (0);
1313
1314	ev_io_init (&wio, sin_cb, 0, EV_READ);
1315	ev_io_start (&wio);
1316
1317	struct ev_timer t[10000];
1318
1319	#if 0
1320	int i;
1321	for (i = 0; i < 10000; ++i)
1322	{
1323	struct ev_timer *w = t + i;
1324	ev_watcher_init (w, ocb, i);
1325	ev_timer_init_abs (w, ocb, drand48 (), 0.99775533);
1326	ev_timer_start (w);
1327	if (drand48 () < 0.5)
1328	ev_timer_stop (w);
1329	}
1330	#endif	1608	#endif
1331		1609
1332	struct ev_timer t1;
1333	ev_timer_init (&t1, ocb, 5, 10);
1334	ev_timer_start (&t1);
1335
1336	struct ev_signal sig;
1337	ev_signal_init (&sig, scb, SIGQUIT);
1338	ev_signal_start (&sig);
1339
1340	struct ev_check cw;
1341	ev_check_init (&cw, gcb);
1342	ev_check_start (&cw);
1343
1344	struct ev_idle iw;
1345	ev_idle_init (&iw, gcb);
1346	ev_idle_start (&iw);
1347
1348	ev_loop (0);
1349
1350	return 0;
1351	}
1352
1353	#endif
1354
1355
1356
1357

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Comparing libev/ev.c (file contents): Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs. Revision 1.89 by root, Sat Nov 10 19:48:44 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.54 by root, Sun Nov 4 00:24:16 2007 UTC vs.
Revision 1.89 by root, Sat Nov 10 19:48:44 2007 UTC