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

Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs.
Revision 1.117 by ayin, Thu Nov 15 17:15:56 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"
33		38
34	# if HAVE_CLOCK_GETTIME	39	# if HAVE_CLOCK_GETTIME
		40	# ifndef EV_USE_MONOTONIC
35	# define EV_USE_MONOTONIC 1	41	# define EV_USE_MONOTONIC 1
		42	# endif
		43	# ifndef EV_USE_REALTIME
36	# define EV_USE_REALTIME 1	44	# define EV_USE_REALTIME 1
		45	# endif
37	# endif	46	# endif
38		47
39	# if HAVE_SELECT && HAVE_SYS_SELECT_H	48	# if HAVE_SELECT && HAVE_SYS_SELECT_H && !defined (EV_USE_SELECT)
40	# define EV_USE_SELECT 1	49	# define EV_USE_SELECT 1
41	# endif	50	# endif
42		51
43	# if HAVE_POLL && HAVE_POLL_H	52	# if HAVE_POLL && HAVE_POLL_H && !defined (EV_USE_POLL)
44	# define EV_USE_POLL 1	53	# define EV_USE_POLL 1
45	# endif	54	# endif
46		55
47	# if HAVE_EPOLL && HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H	56	# if HAVE_EPOLL_CTL && HAVE_SYS_EPOLL_H && !defined (EV_USE_EPOLL)
48	# define EV_USE_EPOLL 1	57	# define EV_USE_EPOLL 1
49	# endif	58	# endif
50		59
51	# if HAVE_KQUEUE && HAVE_WORKING_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H	60	# if HAVE_KQUEUE && HAVE_SYS_EVENT_H && HAVE_SYS_QUEUE_H && !defined (EV_USE_KQUEUE)
52	# define EV_USE_KQUEUE 1	61	# define EV_USE_KQUEUE 1
53	# endif	62	# endif
54		63
55	#endif	64	#endif
56		65
57	#include <math.h>	66	#include <math.h>
58	#include <stdlib.h>	67	#include <stdlib.h>
59	#include <unistd.h>
60	#include <fcntl.h>	68	#include <fcntl.h>
61	#include <signal.h>
62	#include <stddef.h>	69	#include <stddef.h>
63		70
64	#include <stdio.h>	71	#include <stdio.h>
65		72
66	#include <assert.h>	73	#include <assert.h>
67	#include <errno.h>	74	#include <errno.h>
68	#include <sys/types.h>	75	#include <sys/types.h>
		76	#include <time.h>
		77
		78	#include <signal.h>
		79
69	#ifndef WIN32	80	#ifndef _WIN32
		81	# include <unistd.h>
		82	# include <sys/time.h>
70	# include <sys/wait.h>	83	# include <sys/wait.h>
		84	#else
		85	# define WIN32_LEAN_AND_MEAN
		86	# include <windows.h>
		87	# ifndef EV_SELECT_IS_WINSOCKET
		88	# define EV_SELECT_IS_WINSOCKET 1
71	#endif	89	# endif
72	#include <sys/time.h>	90	#endif
73	#include <time.h>
74		91
75	/**/	92	/**/
76		93
77	#ifndef EV_USE_MONOTONIC	94	#ifndef EV_USE_MONOTONIC
78	# define EV_USE_MONOTONIC 1	95	# define EV_USE_MONOTONIC 1
79	#endif	96	#endif
80		97
81	#ifndef EV_USE_SELECT	98	#ifndef EV_USE_SELECT
82	# define EV_USE_SELECT 1	99	# define EV_USE_SELECT 1
		100	# define EV_SELECT_USE_FD_SET 1
83	#endif	101	#endif
84		102
85	#ifndef EV_USE_POLL	103	#ifndef EV_USE_POLL
86	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	104	# ifdef _WIN32
		105	# define EV_USE_POLL 0
		106	# else
		107	# define EV_USE_POLL 1
		108	# endif
87	#endif	109	#endif
88		110
89	#ifndef EV_USE_EPOLL	111	#ifndef EV_USE_EPOLL
90	# define EV_USE_EPOLL 0	112	# define EV_USE_EPOLL 0
91	#endif	113	#endif
92		114
93	#ifndef EV_USE_KQUEUE	115	#ifndef EV_USE_KQUEUE
94	# define EV_USE_KQUEUE 0	116	# define EV_USE_KQUEUE 0
95	#endif	117	#endif
96		118
97	#ifndef EV_USE_WIN32
98	# ifdef WIN32
99	# define EV_USE_WIN32 1
100	# else
101	# define EV_USE_WIN32 0
102	# endif
103	#endif
104
105	#ifndef EV_USE_REALTIME	119	#ifndef EV_USE_REALTIME
106	# define EV_USE_REALTIME 1	120	# define EV_USE_REALTIME 1
107	#endif	121	#endif
108		122
109	/**/	123	/**/
		124
		125	/* darwin simply cannot be helped */
		126	#ifdef __APPLE__
		127	# undef EV_USE_POLL
		128	# undef EV_USE_KQUEUE
		129	#endif
110		130
111	#ifndef CLOCK_MONOTONIC	131	#ifndef CLOCK_MONOTONIC
112	# undef EV_USE_MONOTONIC	132	# undef EV_USE_MONOTONIC
113	# define EV_USE_MONOTONIC 0	133	# define EV_USE_MONOTONIC 0
114	#endif	134	#endif
115		135
116	#ifndef CLOCK_REALTIME	136	#ifndef CLOCK_REALTIME
117	# undef EV_USE_REALTIME	137	# undef EV_USE_REALTIME
118	# define EV_USE_REALTIME 0	138	# define EV_USE_REALTIME 0
		139	#endif
		140
		141	#if EV_SELECT_IS_WINSOCKET
		142	# include <winsock.h>
119	#endif	143	#endif
120		144
121	/**/	145	/**/
122		146
123	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	147	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
124	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	148	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */
125	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	149	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
126	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	150	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */
127		151
		152	#ifdef EV_H
		153	# include EV_H
		154	#else
128	#include "ev.h"	155	# include "ev.h"
		156	#endif
129		157
130	#if __GNUC__ >= 3	158	#if __GNUC__ >= 3
131	# define expect(expr,value) __builtin_expect ((expr),(value))	159	# define expect(expr,value) __builtin_expect ((expr),(value))
132	# define inline inline	160	# define inline inline
133	#else	161	#else
…		…
139	#define expect_true(expr) expect ((expr) != 0, 1)	167	#define expect_true(expr) expect ((expr) != 0, 1)
140		168
141	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	169	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
142	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	170	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
143		171
		172	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		173	#define EMPTY2(a,b) /* used to suppress some warnings */
		174
144	typedef struct ev_watcher *W;	175	typedef struct ev_watcher *W;
145	typedef struct ev_watcher_list *WL;	176	typedef struct ev_watcher_list *WL;
146	typedef struct ev_watcher_time *WT;	177	typedef struct ev_watcher_time *WT;
147		178
148	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	179	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
149		180
150	#if WIN32	181	#ifdef _WIN32
151	/* note: the comment below could not be substantiated, but what would I care */	182	# include "ev_win32.c"
152	/* MSDN says this is required to handle SIGFPE */
153	volatile double SIGFPE_REQ = 0.0f;
154	#endif	183	#endif
155		184
156	/*****************************************************************************/	185	/*****************************************************************************/
157		186
158	static void (syserr_cb)(const char msg);	187	static void (syserr_cb)(const char msg);
…		…
206	typedef struct	235	typedef struct
207	{	236	{
208	WL head;	237	WL head;
209	unsigned char events;	238	unsigned char events;
210	unsigned char reify;	239	unsigned char reify;
		240	#if EV_SELECT_IS_WINSOCKET
		241	SOCKET handle;
		242	#endif
211	} ANFD;	243	} ANFD;
212		244
213	typedef struct	245	typedef struct
214	{	246	{
215	W w;	247	W w;
216	int events;	248	int events;
217	} ANPENDING;	249	} ANPENDING;
218		250
219	#if EV_MULTIPLICITY	251	#if EV_MULTIPLICITY
220		252
221	struct ev_loop	253	struct ev_loop
222	{	254	{
		255	ev_tstamp ev_rt_now;
		256	#define ev_rt_now ((loop)->ev_rt_now)
223	# define VAR(name,decl) decl;	257	#define VAR(name,decl) decl;
224	# include "ev_vars.h"	258	#include "ev_vars.h"
225	};
226	# undef VAR	259	#undef VAR
		260	};
227	# include "ev_wrap.h"	261	#include "ev_wrap.h"
		262
		263	static struct ev_loop default_loop_struct;
		264	struct ev_loop *ev_default_loop_ptr;
228		265
229	#else	266	#else
230		267
		268	ev_tstamp ev_rt_now;
231	# define VAR(name,decl) static decl;	269	#define VAR(name,decl) static decl;
232	# include "ev_vars.h"	270	#include "ev_vars.h"
233	# undef VAR	271	#undef VAR
		272
		273	static int ev_default_loop_ptr;
234		274
235	#endif	275	#endif
236		276
237	/*****************************************************************************/	277	/*****************************************************************************/
238		278
239	inline ev_tstamp	279	ev_tstamp
240	ev_time (void)	280	ev_time (void)
241	{	281	{
242	#if EV_USE_REALTIME	282	#if EV_USE_REALTIME
243	struct timespec ts;	283	struct timespec ts;
244	clock_gettime (CLOCK_REALTIME, &ts);	284	clock_gettime (CLOCK_REALTIME, &ts);
…		…
263	#endif	303	#endif
264		304
265	return ev_time ();	305	return ev_time ();
266	}	306	}
267		307
		308	#if EV_MULTIPLICITY
268	ev_tstamp	309	ev_tstamp
269	ev_now (EV_P)	310	ev_now (EV_P)
270	{	311	{
271	return rt_now;	312	return ev_rt_now;
272	}	313	}
		314	#endif
273		315
274	#define array_roundsize(base,n) ((n) \| 4 & ~3)	316	#define array_roundsize(type,n) (((n) \| 4) & ~3)
275		317
276	#define array_needsize(base,cur,cnt,init) \	318	#define array_needsize(type,base,cur,cnt,init) \
277	if (expect_false ((cnt) > cur)) \	319	if (expect_false ((cnt) > cur)) \
278	{ \	320	{ \
279	int newcnt = cur; \	321	int newcnt = cur; \
280	do \	322	do \
281	{ \	323	{ \
282	newcnt = array_roundsize (base, newcnt << 1); \	324	newcnt = array_roundsize (type, newcnt << 1); \
283	} \	325	} \
284	while ((cnt) > newcnt); \	326	while ((cnt) > newcnt); \
285	\	327	\
286	base = ev_realloc (base, sizeof (base) (newcnt)); \	328	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
287	init (base + cur, newcnt - cur); \	329	init (base + cur, newcnt - cur); \
288	cur = newcnt; \	330	cur = newcnt; \
289	}	331	}
290		332
291	#define array_slim(stem) \	333	#define array_slim(type,stem) \
292	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	334	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
293	{ \	335	{ \
294	stem ## max = array_roundsize (stem ## cnt >> 1); \	336	stem ## max = array_roundsize (stem ## cnt >> 1); \
295	base = ev_realloc (base, sizeof (base) (stem ## max)); \	337	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
296	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	338	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
297	}	339	}
298		340
299	#define array_free(stem, idx) \	341	#define array_free(stem, idx) \
300	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	342	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
…		…
312		354
313	++base;	355	++base;
314	}	356	}
315	}	357	}
316		358
317	static void	359	void
318	event (EV_P_ W w, int events)	360	ev_feed_event (EV_P_ void *w, int revents)
319	{	361	{
		362	W w_ = (W)w;
		363
320	if (w->pending)	364	if (w_->pending)
321	{	365	{
322	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	366	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
323	return;	367	return;
324	}	368	}
325		369
326	w->pending = ++pendingcnt [ABSPRI (w)];	370	w_->pending = ++pendingcnt [ABSPRI (w_)];
327	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], );	371	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
328	pendings [ABSPRI (w)][w->pending - 1].w = w;	372	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
329	pendings [ABSPRI (w)][w->pending - 1].events = events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
330	}	374	}
331		375
332	static void	376	static void
333	queue_events (EV_P_ W *events, int eventcnt, int type)	377	queue_events (EV_P_ W *events, int eventcnt, int type)
334	{	378	{
335	int i;	379	int i;
336		380
337	for (i = 0; i < eventcnt; ++i)	381	for (i = 0; i < eventcnt; ++i)
338	event (EV_A_ events [i], type);	382	ev_feed_event (EV_A_ events [i], type);
339	}	383	}
340		384
341	static void	385	inline void
342	fd_event (EV_P_ int fd, int events)	386	fd_event (EV_P_ int fd, int revents)
343	{	387	{
344	ANFD *anfd = anfds + fd;	388	ANFD *anfd = anfds + fd;
345	struct ev_io *w;	389	struct ev_io *w;
346		390
347	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	391	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
348	{	392	{
349	int ev = w->events & events;	393	int ev = w->events & revents;
350		394
351	if (ev)	395	if (ev)
352	event (EV_A_ (W)w, ev);	396	ev_feed_event (EV_A_ (W)w, ev);
353	}	397	}
		398	}
		399
		400	void
		401	ev_feed_fd_event (EV_P_ int fd, int revents)
		402	{
		403	fd_event (EV_A_ fd, revents);
354	}	404	}
355		405
356	/*****************************************************************************/	406	/*****************************************************************************/
357		407
358	static void	408	static void
…		…
369	int events = 0;	419	int events = 0;
370		420
371	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	421	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
372	events \|= w->events;	422	events \|= w->events;
373		423
		424	#if EV_SELECT_IS_WINSOCKET
		425	if (events)
		426	{
		427	unsigned long argp;
		428	anfd->handle = _get_osfhandle (fd);
		429	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		430	}
		431	#endif
		432
374	anfd->reify = 0;	433	anfd->reify = 0;
375		434
376	method_modify (EV_A_ fd, anfd->events, events);	435	method_modify (EV_A_ fd, anfd->events, events);
377	anfd->events = events;	436	anfd->events = events;
378	}	437	}
…		…
387	return;	446	return;
388		447
389	anfds [fd].reify = 1;	448	anfds [fd].reify = 1;
390		449
391	++fdchangecnt;	450	++fdchangecnt;
392	array_needsize (fdchanges, fdchangemax, fdchangecnt, );	451	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
393	fdchanges [fdchangecnt - 1] = fd;	452	fdchanges [fdchangecnt - 1] = fd;
394	}	453	}
395		454
396	static void	455	static void
397	fd_kill (EV_P_ int fd)	456	fd_kill (EV_P_ int fd)
…		…
399	struct ev_io *w;	458	struct ev_io *w;
400		459
401	while ((w = (struct ev_io *)anfds [fd].head))	460	while ((w = (struct ev_io *)anfds [fd].head))
402	{	461	{
403	ev_io_stop (EV_A_ w);	462	ev_io_stop (EV_A_ w);
404	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	463	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
405	}	464	}
		465	}
		466
		467	static int
		468	fd_valid (int fd)
		469	{
		470	#ifdef _WIN32
		471	return _get_osfhandle (fd) != -1;
		472	#else
		473	return fcntl (fd, F_GETFD) != -1;
		474	#endif
406	}	475	}
407		476
408	/* called on EBADF to verify fds */	477	/* called on EBADF to verify fds */
409	static void	478	static void
410	fd_ebadf (EV_P)	479	fd_ebadf (EV_P)
411	{	480	{
412	int fd;	481	int fd;
413		482
414	for (fd = 0; fd < anfdmax; ++fd)	483	for (fd = 0; fd < anfdmax; ++fd)
415	if (anfds [fd].events)	484	if (anfds [fd].events)
416	if (fcntl (fd, F_GETFD) == -1 && errno == EBADF)	485	if (!fd_valid (fd) == -1 && errno == EBADF)
417	fd_kill (EV_A_ fd);	486	fd_kill (EV_A_ fd);
418	}	487	}
419		488
420	/* called on ENOMEM in select/poll to kill some fds and retry */	489	/* called on ENOMEM in select/poll to kill some fds and retry */
421	static void	490	static void
…		…
487		556
488	heap [k] = w;	557	heap [k] = w;
489	((W)heap [k])->active = k + 1;	558	((W)heap [k])->active = k + 1;
490	}	559	}
491		560
		561	inline void
		562	adjustheap (WT *heap, int N, int k)
		563	{
		564	upheap (heap, k);
		565	downheap (heap, N, k);
		566	}
		567
492	/*****************************************************************************/	568	/*****************************************************************************/
493		569
494	typedef struct	570	typedef struct
495	{	571	{
496	WL head;	572	WL head;
…		…
517	}	593	}
518		594
519	static void	595	static void
520	sighandler (int signum)	596	sighandler (int signum)
521	{	597	{
522	#if WIN32	598	#if _WIN32
523	signal (signum, sighandler);	599	signal (signum, sighandler);
524	#endif	600	#endif
525		601
526	signals [signum - 1].gotsig = 1;	602	signals [signum - 1].gotsig = 1;
527		603
…		…
532	write (sigpipe [1], &signum, 1);	608	write (sigpipe [1], &signum, 1);
533	errno = old_errno;	609	errno = old_errno;
534	}	610	}
535	}	611	}
536		612
		613	void
		614	ev_feed_signal_event (EV_P_ int signum)
		615	{
		616	WL w;
		617
		618	#if EV_MULTIPLICITY
		619	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		620	#endif
		621
		622	--signum;
		623
		624	if (signum < 0 \|\| signum >= signalmax)
		625	return;
		626
		627	signals [signum].gotsig = 0;
		628
		629	for (w = signals [signum].head; w; w = w->next)
		630	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		631	}
		632
537	static void	633	static void
538	sigcb (EV_P_ struct ev_io *iow, int revents)	634	sigcb (EV_P_ struct ev_io *iow, int revents)
539	{	635	{
540	WL w;
541	int signum;	636	int signum;
542		637
543	read (sigpipe [0], &revents, 1);	638	read (sigpipe [0], &revents, 1);
544	gotsig = 0;	639	gotsig = 0;
545		640
546	for (signum = signalmax; signum--; )	641	for (signum = signalmax; signum--; )
547	if (signals [signum].gotsig)	642	if (signals [signum].gotsig)
548	{	643	ev_feed_signal_event (EV_A_ signum + 1);
549	signals [signum].gotsig = 0;	644	}
550		645
551	for (w = signals [signum].head; w; w = w->next)	646	inline void
552	event (EV_A_ (W)w, EV_SIGNAL);	647	fd_intern (int fd)
553	}	648	{
		649	#ifdef _WIN32
		650	int arg = 1;
		651	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		652	#else
		653	fcntl (fd, F_SETFD, FD_CLOEXEC);
		654	fcntl (fd, F_SETFL, O_NONBLOCK);
		655	#endif
554	}	656	}
555		657
556	static void	658	static void
557	siginit (EV_P)	659	siginit (EV_P)
558	{	660	{
559	#ifndef WIN32	661	fd_intern (sigpipe [0]);
560	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	662	fd_intern (sigpipe [1]);
561	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
562
563	/* rather than sort out wether we really need nb, set it */
564	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
565	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
566	#endif
567		663
568	ev_io_set (&sigev, sigpipe [0], EV_READ);	664	ev_io_set (&sigev, sigpipe [0], EV_READ);
569	ev_io_start (EV_A_ &sigev);	665	ev_io_start (EV_A_ &sigev);
570	ev_unref (EV_A); /* child watcher should not keep loop alive */	666	ev_unref (EV_A); /* child watcher should not keep loop alive */
571	}	667	}
572		668
573	/*****************************************************************************/	669	/*****************************************************************************/
574		670
575	#ifndef WIN32
576
577	static struct ev_child *childs [PID_HASHSIZE];	671	static struct ev_child *childs [PID_HASHSIZE];
		672
		673	#ifndef _WIN32
		674
578	static struct ev_signal childev;	675	static struct ev_signal childev;
579		676
580	#ifndef WCONTINUED	677	#ifndef WCONTINUED
581	# define WCONTINUED 0	678	# define WCONTINUED 0
582	#endif	679	#endif
…		…
590	if (w->pid == pid \|\| !w->pid)	687	if (w->pid == pid \|\| !w->pid)
591	{	688	{
592	ev_priority (w) = ev_priority (sw); /* need to do it now */	689	ev_priority (w) = ev_priority (sw); /* need to do it now */
593	w->rpid = pid;	690	w->rpid = pid;
594	w->rstatus = status;	691	w->rstatus = status;
595	event (EV_A_ (W)w, EV_CHILD);	692	ev_feed_event (EV_A_ (W)w, EV_CHILD);
596	}	693	}
597	}	694	}
598		695
599	static void	696	static void
600	childcb (EV_P_ struct ev_signal *sw, int revents)	697	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
602	int pid, status;	699	int pid, status;
603		700
604	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	701	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
605	{	702	{
606	/* make sure we are called again until all childs have been reaped */	703	/* make sure we are called again until all childs have been reaped */
607	event (EV_A_ (W)sw, EV_SIGNAL);	704	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
608		705
609	child_reap (EV_A_ sw, pid, pid, status);	706	child_reap (EV_A_ sw, pid, pid, status);
610	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	707	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
611	}	708	}
612	}	709	}
…		…
642		739
643	/* return true if we are running with elevated privileges and should ignore env variables */	740	/* return true if we are running with elevated privileges and should ignore env variables */
644	static int	741	static int
645	enable_secure (void)	742	enable_secure (void)
646	{	743	{
647	#ifdef WIN32	744	#ifdef _WIN32
648	return 0;	745	return 0;
649	#else	746	#else
650	return getuid () != geteuid ()	747	return getuid () != geteuid ()
651	\|\| getgid () != getegid ();	748	\|\| getgid () != getegid ();
652	#endif	749	#endif
653	}	750	}
654		751
655	int	752	unsigned int
656	ev_method (EV_P)	753	ev_method (EV_P)
657	{	754	{
658	return method;	755	return method;
659	}	756	}
660		757
661	static void	758	static void
662	loop_init (EV_P_ int methods)	759	loop_init (EV_P_ unsigned int flags)
663	{	760	{
664	if (!method)	761	if (!method)
665	{	762	{
666	#if EV_USE_MONOTONIC	763	#if EV_USE_MONOTONIC
667	{	764	{
…		…
669	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	766	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
670	have_monotonic = 1;	767	have_monotonic = 1;
671	}	768	}
672	#endif	769	#endif
673		770
674	rt_now = ev_time ();	771	ev_rt_now = ev_time ();
675	mn_now = get_clock ();	772	mn_now = get_clock ();
676	now_floor = mn_now;	773	now_floor = mn_now;
677	rtmn_diff = rt_now - mn_now;	774	rtmn_diff = ev_rt_now - mn_now;
678		775
679	if (methods == EVMETHOD_AUTO)	776	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
680	if (!enable_secure () && getenv ("LIBEV_METHODS"))
681	methods = atoi (getenv ("LIBEV_METHODS"));	777	flags = atoi (getenv ("LIBEV_FLAGS"));
682	else	778
683	methods = EVMETHOD_ANY;	779	if (!(flags & 0x0000ffff))
		780	flags \|= 0x0000ffff;
684		781
685	method = 0;	782	method = 0;
686	#if EV_USE_WIN32
687	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);
688	#endif
689	#if EV_USE_KQUEUE	783	#if EV_USE_KQUEUE
690	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	784	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
691	#endif	785	#endif
692	#if EV_USE_EPOLL	786	#if EV_USE_EPOLL
693	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	787	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
694	#endif	788	#endif
695	#if EV_USE_POLL	789	#if EV_USE_POLL
696	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	790	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
697	#endif	791	#endif
698	#if EV_USE_SELECT	792	#if EV_USE_SELECT
699	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	793	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
700	#endif	794	#endif
701		795
702	ev_watcher_init (&sigev, sigcb);	796	ev_init (&sigev, sigcb);
703	ev_set_priority (&sigev, EV_MAXPRI);	797	ev_set_priority (&sigev, EV_MAXPRI);
704	}	798	}
705	}	799	}
706		800
707	void	801	void
708	loop_destroy (EV_P)	802	loop_destroy (EV_P)
709	{	803	{
710	int i;	804	int i;
711		805
712	#if EV_USE_WIN32
713	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);
714	#endif
715	#if EV_USE_KQUEUE	806	#if EV_USE_KQUEUE
716	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	807	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
717	#endif	808	#endif
718	#if EV_USE_EPOLL	809	#if EV_USE_EPOLL
719	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);	810	if (method == EVMETHOD_EPOLL ) epoll_destroy (EV_A);
…		…
726	#endif	817	#endif
727		818
728	for (i = NUMPRI; i--; )	819	for (i = NUMPRI; i--; )
729	array_free (pending, [i]);	820	array_free (pending, [i]);
730		821
		822	/* have to use the microsoft-never-gets-it-right macro */
731	array_free (fdchange, );	823	array_free (fdchange, EMPTY0);
732	array_free (timer, );	824	array_free (timer, EMPTY0);
		825	#if EV_PERIODICS
733	array_free (periodic, );	826	array_free (periodic, EMPTY0);
		827	#endif
734	array_free (idle, );	828	array_free (idle, EMPTY0);
735	array_free (prepare, );	829	array_free (prepare, EMPTY0);
736	array_free (check, );	830	array_free (check, EMPTY0);
737		831
738	method = 0;	832	method = 0;
739	}	833	}
740		834
741	static void	835	static void
…		…
766	postfork = 0;	860	postfork = 0;
767	}	861	}
768		862
769	#if EV_MULTIPLICITY	863	#if EV_MULTIPLICITY
770	struct ev_loop *	864	struct ev_loop *
771	ev_loop_new (int methods)	865	ev_loop_new (unsigned int flags)
772	{	866	{
773	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	867	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
774		868
775	memset (loop, 0, sizeof (struct ev_loop));	869	memset (loop, 0, sizeof (struct ev_loop));
776		870
777	loop_init (EV_A_ methods);	871	loop_init (EV_A_ flags);
778		872
779	if (ev_method (EV_A))	873	if (ev_method (EV_A))
780	return loop;	874	return loop;
781		875
782	return 0;	876	return 0;
…		…
796	}	890	}
797		891
798	#endif	892	#endif
799		893
800	#if EV_MULTIPLICITY	894	#if EV_MULTIPLICITY
801	struct ev_loop default_loop_struct;
802	static struct ev_loop *default_loop;
803
804	struct ev_loop *	895	struct ev_loop *
		896	ev_default_loop_ (unsigned int flags)
805	#else	897	#else
806	static int default_loop;
807
808	int	898	int
		899	ev_default_loop (unsigned int flags)
809	#endif	900	#endif
810	ev_default_loop (int methods)
811	{	901	{
812	if (sigpipe [0] == sigpipe [1])	902	if (sigpipe [0] == sigpipe [1])
813	if (pipe (sigpipe))	903	if (pipe (sigpipe))
814	return 0;	904	return 0;
815		905
816	if (!default_loop)	906	if (!ev_default_loop_ptr)
817	{	907	{
818	#if EV_MULTIPLICITY	908	#if EV_MULTIPLICITY
819	struct ev_loop *loop = default_loop = &default_loop_struct;	909	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
820	#else	910	#else
821	default_loop = 1;	911	ev_default_loop_ptr = 1;
822	#endif	912	#endif
823		913
824	loop_init (EV_A_ methods);	914	loop_init (EV_A_ flags);
825		915
826	if (ev_method (EV_A))	916	if (ev_method (EV_A))
827	{	917	{
828	siginit (EV_A);	918	siginit (EV_A);
829		919
830	#ifndef WIN32	920	#ifndef _WIN32
831	ev_signal_init (&childev, childcb, SIGCHLD);	921	ev_signal_init (&childev, childcb, SIGCHLD);
832	ev_set_priority (&childev, EV_MAXPRI);	922	ev_set_priority (&childev, EV_MAXPRI);
833	ev_signal_start (EV_A_ &childev);	923	ev_signal_start (EV_A_ &childev);
834	ev_unref (EV_A); /* child watcher should not keep loop alive */	924	ev_unref (EV_A); /* child watcher should not keep loop alive */
835	#endif	925	#endif
836	}	926	}
837	else	927	else
838	default_loop = 0;	928	ev_default_loop_ptr = 0;
839	}	929	}
840		930
841	return default_loop;	931	return ev_default_loop_ptr;
842	}	932	}
843		933
844	void	934	void
845	ev_default_destroy (void)	935	ev_default_destroy (void)
846	{	936	{
847	#if EV_MULTIPLICITY	937	#if EV_MULTIPLICITY
848	struct ev_loop *loop = default_loop;	938	struct ev_loop *loop = ev_default_loop_ptr;
849	#endif	939	#endif
850		940
		941	#ifndef _WIN32
851	ev_ref (EV_A); /* child watcher */	942	ev_ref (EV_A); /* child watcher */
852	ev_signal_stop (EV_A_ &childev);	943	ev_signal_stop (EV_A_ &childev);
		944	#endif
853		945
854	ev_ref (EV_A); /* signal watcher */	946	ev_ref (EV_A); /* signal watcher */
855	ev_io_stop (EV_A_ &sigev);	947	ev_io_stop (EV_A_ &sigev);
856		948
857	close (sigpipe [0]); sigpipe [0] = 0;	949	close (sigpipe [0]); sigpipe [0] = 0;
…		…
862		954
863	void	955	void
864	ev_default_fork (void)	956	ev_default_fork (void)
865	{	957	{
866	#if EV_MULTIPLICITY	958	#if EV_MULTIPLICITY
867	struct ev_loop *loop = default_loop;	959	struct ev_loop *loop = ev_default_loop_ptr;
868	#endif	960	#endif
869		961
870	if (method)	962	if (method)
871	postfork = 1;	963	postfork = 1;
872	}	964	}
873		965
874	/*****************************************************************************/	966	/*****************************************************************************/
		967
		968	static int
		969	any_pending (EV_P)
		970	{
		971	int pri;
		972
		973	for (pri = NUMPRI; pri--; )
		974	if (pendingcnt [pri])
		975	return 1;
		976
		977	return 0;
		978	}
875		979
876	static void	980	static void
877	call_pending (EV_P)	981	call_pending (EV_P)
878	{	982	{
879	int pri;	983	int pri;
…		…
884	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	988	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
885		989
886	if (p->w)	990	if (p->w)
887	{	991	{
888	p->w->pending = 0;	992	p->w->pending = 0;
889	p->w->cb (EV_A_ p->w, p->events);	993	EV_CB_INVOKE (p->w, p->events);
890	}	994	}
891	}	995	}
892	}	996	}
893		997
894	static void	998	static void
…		…
902		1006
903	/* first reschedule or stop timer */	1007	/* first reschedule or stop timer */
904	if (w->repeat)	1008	if (w->repeat)
905	{	1009	{
906	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1010	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1011
907	((WT)w)->at = mn_now + w->repeat;	1012	((WT)w)->at += w->repeat;
		1013	if (((WT)w)->at < mn_now)
		1014	((WT)w)->at = mn_now;
		1015
908	downheap ((WT *)timers, timercnt, 0);	1016	downheap ((WT *)timers, timercnt, 0);
909	}	1017	}
910	else	1018	else
911	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1019	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
912		1020
913	event (EV_A_ (W)w, EV_TIMEOUT);	1021	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
914	}	1022	}
915	}	1023	}
916		1024
		1025	#if EV_PERIODICS
917	static void	1026	static void
918	periodics_reify (EV_P)	1027	periodics_reify (EV_P)
919	{	1028	{
920	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1029	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
921	{	1030	{
922	struct ev_periodic *w = periodics [0];	1031	struct ev_periodic *w = periodics [0];
923		1032
924	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1033	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
925		1034
926	/* first reschedule or stop timer */	1035	/* first reschedule or stop timer */
927	if (w->interval)	1036	if (w->reschedule_cb)
928	{	1037	{
		1038	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1039	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1040	downheap ((WT *)periodics, periodiccnt, 0);
		1041	}
		1042	else if (w->interval)
		1043	{
929	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1044	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
930	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1045	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
931	downheap ((WT *)periodics, periodiccnt, 0);	1046	downheap ((WT *)periodics, periodiccnt, 0);
932	}	1047	}
933	else	1048	else
934	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1049	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
935		1050
936	event (EV_A_ (W)w, EV_PERIODIC);	1051	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
937	}	1052	}
938	}	1053	}
939		1054
940	static void	1055	static void
941	periodics_reschedule (EV_P)	1056	periodics_reschedule (EV_P)
…		…
945	/* adjust periodics after time jump */	1060	/* adjust periodics after time jump */
946	for (i = 0; i < periodiccnt; ++i)	1061	for (i = 0; i < periodiccnt; ++i)
947	{	1062	{
948	struct ev_periodic *w = periodics [i];	1063	struct ev_periodic *w = periodics [i];
949		1064
		1065	if (w->reschedule_cb)
		1066	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
950	if (w->interval)	1067	else if (w->interval)
951	{
952	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1068	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
953
954	if (fabs (diff) >= 1e-4)
955	{
956	ev_periodic_stop (EV_A_ w);
957	ev_periodic_start (EV_A_ w);
958
959	i = 0; /* restart loop, inefficient, but time jumps should be rare */
960	}
961	}
962	}	1069	}
		1070
		1071	/* now rebuild the heap */
		1072	for (i = periodiccnt >> 1; i--; )
		1073	downheap ((WT *)periodics, periodiccnt, i);
963	}	1074	}
		1075	#endif
964		1076
965	inline int	1077	inline int
966	time_update_monotonic (EV_P)	1078	time_update_monotonic (EV_P)
967	{	1079	{
968	mn_now = get_clock ();	1080	mn_now = get_clock ();
969		1081
970	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1082	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
971	{	1083	{
972	rt_now = rtmn_diff + mn_now;	1084	ev_rt_now = rtmn_diff + mn_now;
973	return 0;	1085	return 0;
974	}	1086	}
975	else	1087	else
976	{	1088	{
977	now_floor = mn_now;	1089	now_floor = mn_now;
978	rt_now = ev_time ();	1090	ev_rt_now = ev_time ();
979	return 1;	1091	return 1;
980	}	1092	}
981	}	1093	}
982		1094
983	static void	1095	static void
…		…
992	{	1104	{
993	ev_tstamp odiff = rtmn_diff;	1105	ev_tstamp odiff = rtmn_diff;
994		1106
995	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1107	for (i = 4; --i; ) /* loop a few times, before making important decisions */
996	{	1108	{
997	rtmn_diff = rt_now - mn_now;	1109	rtmn_diff = ev_rt_now - mn_now;
998		1110
999	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1111	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1000	return; /* all is well */	1112	return; /* all is well */
1001		1113
1002	rt_now = ev_time ();	1114	ev_rt_now = ev_time ();
1003	mn_now = get_clock ();	1115	mn_now = get_clock ();
1004	now_floor = mn_now;	1116	now_floor = mn_now;
1005	}	1117	}
1006		1118
		1119	# if EV_PERIODICS
1007	periodics_reschedule (EV_A);	1120	periodics_reschedule (EV_A);
		1121	# endif
1008	/* no timer adjustment, as the monotonic clock doesn't jump */	1122	/* no timer adjustment, as the monotonic clock doesn't jump */
1009	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1123	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1010	}	1124	}
1011	}	1125	}
1012	else	1126	else
1013	#endif	1127	#endif
1014	{	1128	{
1015	rt_now = ev_time ();	1129	ev_rt_now = ev_time ();
1016		1130
1017	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1131	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1018	{	1132	{
		1133	#if EV_PERIODICS
1019	periodics_reschedule (EV_A);	1134	periodics_reschedule (EV_A);
		1135	#endif
1020		1136
1021	/* adjust timers. this is easy, as the offset is the same for all */	1137	/* adjust timers. this is easy, as the offset is the same for all */
1022	for (i = 0; i < timercnt; ++i)	1138	for (i = 0; i < timercnt; ++i)
1023	((WT)timers [i])->at += rt_now - mn_now;	1139	((WT)timers [i])->at += ev_rt_now - mn_now;
1024	}	1140	}
1025		1141
1026	mn_now = rt_now;	1142	mn_now = ev_rt_now;
1027	}	1143	}
1028	}	1144	}
1029		1145
1030	void	1146	void
1031	ev_ref (EV_P)	1147	ev_ref (EV_P)
…		…
1045	ev_loop (EV_P_ int flags)	1161	ev_loop (EV_P_ int flags)
1046	{	1162	{
1047	double block;	1163	double block;
1048	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1164	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1049		1165
1050	do	1166	while (activecnt)
1051	{	1167	{
1052	/* queue check watchers (and execute them) */	1168	/* queue check watchers (and execute them) */
1053	if (expect_false (preparecnt))	1169	if (expect_false (preparecnt))
1054	{	1170	{
1055	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1171	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1063	/* update fd-related kernel structures */	1179	/* update fd-related kernel structures */
1064	fd_reify (EV_A);	1180	fd_reify (EV_A);
1065		1181
1066	/* calculate blocking time */	1182	/* calculate blocking time */
1067		1183
1068	/* we only need this for !monotonic clockor timers, but as we basically	1184	/* we only need this for !monotonic clock or timers, but as we basically
1069	always have timers, we just calculate it always */	1185	always have timers, we just calculate it always */
1070	#if EV_USE_MONOTONIC	1186	#if EV_USE_MONOTONIC
1071	if (expect_true (have_monotonic))	1187	if (expect_true (have_monotonic))
1072	time_update_monotonic (EV_A);	1188	time_update_monotonic (EV_A);
1073	else	1189	else
1074	#endif	1190	#endif
1075	{	1191	{
1076	rt_now = ev_time ();	1192	ev_rt_now = ev_time ();
1077	mn_now = rt_now;	1193	mn_now = ev_rt_now;
1078	}	1194	}
1079		1195
1080	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1196	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1081	block = 0.;	1197	block = 0.;
1082	else	1198	else
…		…
1087	{	1203	{
1088	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1204	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1089	if (block > to) block = to;	1205	if (block > to) block = to;
1090	}	1206	}
1091		1207
		1208	#if EV_PERIODICS
1092	if (periodiccnt)	1209	if (periodiccnt)
1093	{	1210	{
1094	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1211	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1095	if (block > to) block = to;	1212	if (block > to) block = to;
1096	}	1213	}
		1214	#endif
1097		1215
1098	if (block < 0.) block = 0.;	1216	if (block < 0.) block = 0.;
1099	}	1217	}
1100		1218
1101	method_poll (EV_A_ block);	1219	method_poll (EV_A_ block);
1102		1220
1103	/* update rt_now, do magic */	1221	/* update ev_rt_now, do magic */
1104	time_update (EV_A);	1222	time_update (EV_A);
1105		1223
1106	/* queue pending timers and reschedule them */	1224	/* queue pending timers and reschedule them */
1107	timers_reify (EV_A); /* relative timers called last */	1225	timers_reify (EV_A); /* relative timers called last */
		1226	#if EV_PERIODICS
1108	periodics_reify (EV_A); /* absolute timers called first */	1227	periodics_reify (EV_A); /* absolute timers called first */
		1228	#endif
1109		1229
1110	/* queue idle watchers unless io or timers are pending */	1230	/* queue idle watchers unless io or timers are pending */
1111	if (!pendingcnt)	1231	if (idlecnt && !any_pending (EV_A))
1112	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1232	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1113		1233
1114	/* queue check watchers, to be executed first */	1234	/* queue check watchers, to be executed first */
1115	if (checkcnt)	1235	if (checkcnt)
1116	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1236	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1117		1237
1118	call_pending (EV_A);	1238	call_pending (EV_A);
		1239
		1240	if (loop_done)
		1241	break;
1119	}	1242	}
1120	while (activecnt && !loop_done);
1121		1243
1122	if (loop_done != 2)	1244	if (loop_done != 2)
1123	loop_done = 0;	1245	loop_done = 0;
1124	}	1246	}
1125		1247
…		…
1191	return;	1313	return;
1192		1314
1193	assert (("ev_io_start called with negative fd", fd >= 0));	1315	assert (("ev_io_start called with negative fd", fd >= 0));
1194		1316
1195	ev_start (EV_A_ (W)w, 1);	1317	ev_start (EV_A_ (W)w, 1);
1196	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1318	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1197	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1319	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1198		1320
1199	fd_change (EV_A_ fd);	1321	fd_change (EV_A_ fd);
1200	}	1322	}
1201		1323
…		…
1204	{	1326	{
1205	ev_clear_pending (EV_A_ (W)w);	1327	ev_clear_pending (EV_A_ (W)w);
1206	if (!ev_is_active (w))	1328	if (!ev_is_active (w))
1207	return;	1329	return;
1208		1330
		1331	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
		1332
1209	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1333	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1210	ev_stop (EV_A_ (W)w);	1334	ev_stop (EV_A_ (W)w);
1211		1335
1212	fd_change (EV_A_ w->fd);	1336	fd_change (EV_A_ w->fd);
1213	}	1337	}
…		…
1221	((WT)w)->at += mn_now;	1345	((WT)w)->at += mn_now;
1222		1346
1223	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1347	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1224		1348
1225	ev_start (EV_A_ (W)w, ++timercnt);	1349	ev_start (EV_A_ (W)w, ++timercnt);
1226	array_needsize (timers, timermax, timercnt, );	1350	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1227	timers [timercnt - 1] = w;	1351	timers [timercnt - 1] = w;
1228	upheap ((WT *)timers, timercnt - 1);	1352	upheap ((WT *)timers, timercnt - 1);
1229		1353
1230	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1354	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1231	}	1355	}
…		…
1240	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1364	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1241		1365
1242	if (((W)w)->active < timercnt--)	1366	if (((W)w)->active < timercnt--)
1243	{	1367	{
1244	timers [((W)w)->active - 1] = timers [timercnt];	1368	timers [((W)w)->active - 1] = timers [timercnt];
1245	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1369	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1246	}	1370	}
1247		1371
1248	((WT)w)->at = w->repeat;	1372	((WT)w)->at -= mn_now;
1249		1373
1250	ev_stop (EV_A_ (W)w);	1374	ev_stop (EV_A_ (W)w);
1251	}	1375	}
1252		1376
1253	void	1377	void
…		…
1256	if (ev_is_active (w))	1380	if (ev_is_active (w))
1257	{	1381	{
1258	if (w->repeat)	1382	if (w->repeat)
1259	{	1383	{
1260	((WT)w)->at = mn_now + w->repeat;	1384	((WT)w)->at = mn_now + w->repeat;
1261	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1385	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1262	}	1386	}
1263	else	1387	else
1264	ev_timer_stop (EV_A_ w);	1388	ev_timer_stop (EV_A_ w);
1265	}	1389	}
1266	else if (w->repeat)	1390	else if (w->repeat)
		1391	{
		1392	w->at = w->repeat;
1267	ev_timer_start (EV_A_ w);	1393	ev_timer_start (EV_A_ w);
		1394	}
1268	}	1395	}
1269		1396
		1397	#if EV_PERIODICS
1270	void	1398	void
1271	ev_periodic_start (EV_P_ struct ev_periodic *w)	1399	ev_periodic_start (EV_P_ struct ev_periodic *w)
1272	{	1400	{
1273	if (ev_is_active (w))	1401	if (ev_is_active (w))
1274	return;	1402	return;
1275		1403
		1404	if (w->reschedule_cb)
		1405	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1406	else if (w->interval)
		1407	{
1276	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1408	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1277
1278	/* this formula differs from the one in periodic_reify because we do not always round up */	1409	/* this formula differs from the one in periodic_reify because we do not always round up */
1279	if (w->interval)
1280	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1410	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1411	}
1281		1412
1282	ev_start (EV_A_ (W)w, ++periodiccnt);	1413	ev_start (EV_A_ (W)w, ++periodiccnt);
1283	array_needsize (periodics, periodicmax, periodiccnt, );	1414	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1284	periodics [periodiccnt - 1] = w;	1415	periodics [periodiccnt - 1] = w;
1285	upheap ((WT *)periodics, periodiccnt - 1);	1416	upheap ((WT *)periodics, periodiccnt - 1);
1286		1417
1287	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1418	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1288	}	1419	}
…		…
1297	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1428	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1298		1429
1299	if (((W)w)->active < periodiccnt--)	1430	if (((W)w)->active < periodiccnt--)
1300	{	1431	{
1301	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1432	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1302	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1433	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1303	}	1434	}
1304		1435
1305	ev_stop (EV_A_ (W)w);	1436	ev_stop (EV_A_ (W)w);
1306	}	1437	}
1307		1438
1308	void	1439	void
		1440	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1441	{
		1442	/* TODO: use adjustheap and recalculation */
		1443	ev_periodic_stop (EV_A_ w);
		1444	ev_periodic_start (EV_A_ w);
		1445	}
		1446	#endif
		1447
		1448	void
1309	ev_idle_start (EV_P_ struct ev_idle *w)	1449	ev_idle_start (EV_P_ struct ev_idle *w)
1310	{	1450	{
1311	if (ev_is_active (w))	1451	if (ev_is_active (w))
1312	return;	1452	return;
1313		1453
1314	ev_start (EV_A_ (W)w, ++idlecnt);	1454	ev_start (EV_A_ (W)w, ++idlecnt);
1315	array_needsize (idles, idlemax, idlecnt, );	1455	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1316	idles [idlecnt - 1] = w;	1456	idles [idlecnt - 1] = w;
1317	}	1457	}
1318		1458
1319	void	1459	void
1320	ev_idle_stop (EV_P_ struct ev_idle *w)	1460	ev_idle_stop (EV_P_ struct ev_idle *w)
1321	{	1461	{
1322	ev_clear_pending (EV_A_ (W)w);	1462	ev_clear_pending (EV_A_ (W)w);
1323	if (ev_is_active (w))	1463	if (!ev_is_active (w))
1324	return;	1464	return;
1325		1465
1326	idles [((W)w)->active - 1] = idles [--idlecnt];	1466	idles [((W)w)->active - 1] = idles [--idlecnt];
1327	ev_stop (EV_A_ (W)w);	1467	ev_stop (EV_A_ (W)w);
1328	}	1468	}
…		…
1332	{	1472	{
1333	if (ev_is_active (w))	1473	if (ev_is_active (w))
1334	return;	1474	return;
1335		1475
1336	ev_start (EV_A_ (W)w, ++preparecnt);	1476	ev_start (EV_A_ (W)w, ++preparecnt);
1337	array_needsize (prepares, preparemax, preparecnt, );	1477	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1338	prepares [preparecnt - 1] = w;	1478	prepares [preparecnt - 1] = w;
1339	}	1479	}
1340		1480
1341	void	1481	void
1342	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1482	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1343	{	1483	{
1344	ev_clear_pending (EV_A_ (W)w);	1484	ev_clear_pending (EV_A_ (W)w);
1345	if (ev_is_active (w))	1485	if (!ev_is_active (w))
1346	return;	1486	return;
1347		1487
1348	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1488	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1349	ev_stop (EV_A_ (W)w);	1489	ev_stop (EV_A_ (W)w);
1350	}	1490	}
…		…
1354	{	1494	{
1355	if (ev_is_active (w))	1495	if (ev_is_active (w))
1356	return;	1496	return;
1357		1497
1358	ev_start (EV_A_ (W)w, ++checkcnt);	1498	ev_start (EV_A_ (W)w, ++checkcnt);
1359	array_needsize (checks, checkmax, checkcnt, );	1499	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1360	checks [checkcnt - 1] = w;	1500	checks [checkcnt - 1] = w;
1361	}	1501	}
1362		1502
1363	void	1503	void
1364	ev_check_stop (EV_P_ struct ev_check *w)	1504	ev_check_stop (EV_P_ struct ev_check *w)
1365	{	1505	{
1366	ev_clear_pending (EV_A_ (W)w);	1506	ev_clear_pending (EV_A_ (W)w);
1367	if (ev_is_active (w))	1507	if (!ev_is_active (w))
1368	return;	1508	return;
1369		1509
1370	checks [((W)w)->active - 1] = checks [--checkcnt];	1510	checks [((W)w)->active - 1] = checks [--checkcnt];
1371	ev_stop (EV_A_ (W)w);	1511	ev_stop (EV_A_ (W)w);
1372	}	1512	}
…		…
1377		1517
1378	void	1518	void
1379	ev_signal_start (EV_P_ struct ev_signal *w)	1519	ev_signal_start (EV_P_ struct ev_signal *w)
1380	{	1520	{
1381	#if EV_MULTIPLICITY	1521	#if EV_MULTIPLICITY
1382	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1522	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1383	#endif	1523	#endif
1384	if (ev_is_active (w))	1524	if (ev_is_active (w))
1385	return;	1525	return;
1386		1526
1387	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1527	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1388		1528
1389	ev_start (EV_A_ (W)w, 1);	1529	ev_start (EV_A_ (W)w, 1);
1390	array_needsize (signals, signalmax, w->signum, signals_init);	1530	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1391	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1531	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1392		1532
1393	if (!((WL)w)->next)	1533	if (!((WL)w)->next)
1394	{	1534	{
1395	#if WIN32	1535	#if _WIN32
1396	signal (w->signum, sighandler);	1536	signal (w->signum, sighandler);
1397	#else	1537	#else
1398	struct sigaction sa;	1538	struct sigaction sa;
1399	sa.sa_handler = sighandler;	1539	sa.sa_handler = sighandler;
1400	sigfillset (&sa.sa_mask);	1540	sigfillset (&sa.sa_mask);
…		…
1420		1560
1421	void	1561	void
1422	ev_child_start (EV_P_ struct ev_child *w)	1562	ev_child_start (EV_P_ struct ev_child *w)
1423	{	1563	{
1424	#if EV_MULTIPLICITY	1564	#if EV_MULTIPLICITY
1425	assert (("child watchers are only supported in the default loop", loop == default_loop));	1565	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1426	#endif	1566	#endif
1427	if (ev_is_active (w))	1567	if (ev_is_active (w))
1428	return;	1568	return;
1429		1569
1430	ev_start (EV_A_ (W)w, 1);	1570	ev_start (EV_A_ (W)w, 1);
…		…
1433		1573
1434	void	1574	void
1435	ev_child_stop (EV_P_ struct ev_child *w)	1575	ev_child_stop (EV_P_ struct ev_child *w)
1436	{	1576	{
1437	ev_clear_pending (EV_A_ (W)w);	1577	ev_clear_pending (EV_A_ (W)w);
1438	if (ev_is_active (w))	1578	if (!ev_is_active (w))
1439	return;	1579	return;
1440		1580
1441	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1581	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1442	ev_stop (EV_A_ (W)w);	1582	ev_stop (EV_A_ (W)w);
1443	}	1583	}
…		…
1478	}	1618	}
1479		1619
1480	void	1620	void
1481	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1621	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1482	{	1622	{
1483	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1623	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1484		1624
1485	if (!once)	1625	if (!once)
1486	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1626	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1487	else	1627	else
1488	{	1628	{
1489	once->cb = cb;	1629	once->cb = cb;
1490	once->arg = arg;	1630	once->arg = arg;
1491		1631
1492	ev_watcher_init (&once->io, once_cb_io);	1632	ev_init (&once->io, once_cb_io);
1493	if (fd >= 0)	1633	if (fd >= 0)
1494	{	1634	{
1495	ev_io_set (&once->io, fd, events);	1635	ev_io_set (&once->io, fd, events);
1496	ev_io_start (EV_A_ &once->io);	1636	ev_io_start (EV_A_ &once->io);
1497	}	1637	}
1498		1638
1499	ev_watcher_init (&once->to, once_cb_to);	1639	ev_init (&once->to, once_cb_to);
1500	if (timeout >= 0.)	1640	if (timeout >= 0.)
1501	{	1641	{
1502	ev_timer_set (&once->to, timeout, 0.);	1642	ev_timer_set (&once->to, timeout, 0.);
1503	ev_timer_start (EV_A_ &once->to);	1643	ev_timer_start (EV_A_ &once->to);
1504	}	1644	}
1505	}	1645	}
1506	}	1646	}
1507		1647
		1648	#ifdef __cplusplus
		1649	}
		1650	#endif
		1651

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Comparing libev/ev.c (file contents): Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs. Revision 1.117 by ayin, Thu Nov 15 17:15:56 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.70 by root, Tue Nov 6 00:52:32 2007 UTC vs.
Revision 1.117 by ayin, Thu Nov 15 17:15:56 2007 UTC