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

Comparing libev/ev.c (file contents):
Revision 1.71 by root, Tue Nov 6 13:17:55 2007 UTC vs.
Revision 1.125 by root, Sat Nov 17 02:28:43 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
		62	# endif
		63
		64	# if HAVE_PORT_H && HAVE_PORT_CREATE && !defined (EV_USE_PORT)
		65	# define EV_USE_PORT 1
53	# endif	66	# endif
54		67
55	#endif	68	#endif
56		69
57	#include <math.h>	70	#include <math.h>
…		…
64	#include <assert.h>	77	#include <assert.h>
65	#include <errno.h>	78	#include <errno.h>
66	#include <sys/types.h>	79	#include <sys/types.h>
67	#include <time.h>	80	#include <time.h>
68		81
69	#ifndef PERL
70	# include <signal.h>	82	#include <signal.h>
71	#endif
72		83
73	#ifndef WIN32	84	#ifndef _WIN32
74	# include <unistd.h>	85	# include <unistd.h>
75	# include <sys/time.h>	86	# include <sys/time.h>
76	# include <sys/wait.h>	87	# include <sys/wait.h>
		88	#else
		89	# define WIN32_LEAN_AND_MEAN
		90	# include <windows.h>
		91	# ifndef EV_SELECT_IS_WINSOCKET
		92	# define EV_SELECT_IS_WINSOCKET 1
77	#endif	93	# endif
		94	#endif
		95
78	/**/	96	/**/
79		97
80	#ifndef EV_USE_MONOTONIC	98	#ifndef EV_USE_MONOTONIC
81	# define EV_USE_MONOTONIC 1	99	# define EV_USE_MONOTONIC 0
		100	#endif
		101
		102	#ifndef EV_USE_REALTIME
		103	# define EV_USE_REALTIME 0
82	#endif	104	#endif
83		105
84	#ifndef EV_USE_SELECT	106	#ifndef EV_USE_SELECT
85	# define EV_USE_SELECT 1	107	# define EV_USE_SELECT 1
86	#endif	108	#endif
87		109
88	#ifndef EV_USE_POLL	110	#ifndef EV_USE_POLL
89	# define EV_USE_POLL 0 /* poll is usually slower than select, and not as well tested */	111	# ifdef _WIN32
		112	# define EV_USE_POLL 0
		113	# else
		114	# define EV_USE_POLL 1
		115	# endif
90	#endif	116	#endif
91		117
92	#ifndef EV_USE_EPOLL	118	#ifndef EV_USE_EPOLL
93	# define EV_USE_EPOLL 0	119	# define EV_USE_EPOLL 0
94	#endif	120	#endif
95		121
96	#ifndef EV_USE_KQUEUE	122	#ifndef EV_USE_KQUEUE
97	# define EV_USE_KQUEUE 0	123	# define EV_USE_KQUEUE 0
98	#endif	124	#endif
99		125
100	#ifndef EV_USE_WIN32
101	# ifdef WIN32
102	# define EV_USE_WIN32 0 /* it does not exist, use select */
103	# undef EV_USE_SELECT
104	# define EV_USE_SELECT 1
105	# else
106	# define EV_USE_WIN32 0
107	# endif
108	#endif
109
110	#ifndef EV_USE_REALTIME	126	#ifndef EV_USE_PORT
111	# define EV_USE_REALTIME 1	127	# define EV_USE_PORT 0
112	#endif	128	#endif
113		129
114	/**/	130	/**/
		131
		132	/* darwin simply cannot be helped */
		133	#ifdef __APPLE__
		134	# undef EV_USE_POLL
		135	# undef EV_USE_KQUEUE
		136	#endif
115		137
116	#ifndef CLOCK_MONOTONIC	138	#ifndef CLOCK_MONOTONIC
117	# undef EV_USE_MONOTONIC	139	# undef EV_USE_MONOTONIC
118	# define EV_USE_MONOTONIC 0	140	# define EV_USE_MONOTONIC 0
119	#endif	141	#endif
…		…
121	#ifndef CLOCK_REALTIME	143	#ifndef CLOCK_REALTIME
122	# undef EV_USE_REALTIME	144	# undef EV_USE_REALTIME
123	# define EV_USE_REALTIME 0	145	# define EV_USE_REALTIME 0
124	#endif	146	#endif
125		147
		148	#if EV_SELECT_IS_WINSOCKET
		149	# include <winsock.h>
		150	#endif
		151
126	/**/	152	/**/
127		153
128	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */	154	#define MIN_TIMEJUMP 1. /* minimum timejump that gets detected (if monotonic clock available) */
129	#define MAX_BLOCKTIME 59.731 /* never wait longer than this time (to detect time jumps) */	155	#define MAX_BLOCKTIME 59.743 /* never wait longer than this time (to detect time jumps) */
130	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */	156	#define PID_HASHSIZE 16 /* size of pid hash table, must be power of two */
131	/#define CLEANUP_INTERVAL 300. / how often to try to free memory and re-check fds */	157	/#define CLEANUP_INTERVAL (MAX_BLOCKTIME 5.) /* how often to try to free memory and re-check fds */
132		158
		159	#ifdef EV_H
		160	# include EV_H
		161	#else
133	#include "ev.h"	162	# include "ev.h"
		163	#endif
134		164
135	#if __GNUC__ >= 3	165	#if __GNUC__ >= 3
136	# define expect(expr,value) __builtin_expect ((expr),(value))	166	# define expect(expr,value) __builtin_expect ((expr),(value))
137	# define inline inline	167	# define inline static inline
138	#else	168	#else
139	# define expect(expr,value) (expr)	169	# define expect(expr,value) (expr)
140	# define inline static	170	# define inline static
141	#endif	171	#endif
142		172
…		…
144	#define expect_true(expr) expect ((expr) != 0, 1)	174	#define expect_true(expr) expect ((expr) != 0, 1)
145		175
146	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)	176	#define NUMPRI (EV_MAXPRI - EV_MINPRI + 1)
147	#define ABSPRI(w) ((w)->priority - EV_MINPRI)	177	#define ABSPRI(w) ((w)->priority - EV_MINPRI)
148		178
		179	#define EMPTY0 /* required for microsofts broken pseudo-c compiler */
		180	#define EMPTY2(a,b) /* used to suppress some warnings */
		181
149	typedef struct ev_watcher *W;	182	typedef struct ev_watcher *W;
150	typedef struct ev_watcher_list *WL;	183	typedef struct ev_watcher_list *WL;
151	typedef struct ev_watcher_time *WT;	184	typedef struct ev_watcher_time *WT;
152		185
153	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */	186	static int have_monotonic; /* did clock_gettime (CLOCK_MONOTONIC) work? */
154		187
155	#if WIN32	188	#ifdef _WIN32
156	/* note: the comment below could not be substantiated, but what would I care */	189	# include "ev_win32.c"
157	/* MSDN says this is required to handle SIGFPE */
158	volatile double SIGFPE_REQ = 0.0f;
159	#endif	190	#endif
160		191
161	/*****************************************************************************/	192	/*****************************************************************************/
162		193
163	static void (syserr_cb)(const char msg);	194	static void (syserr_cb)(const char msg);
…		…
211	typedef struct	242	typedef struct
212	{	243	{
213	WL head;	244	WL head;
214	unsigned char events;	245	unsigned char events;
215	unsigned char reify;	246	unsigned char reify;
		247	#if EV_SELECT_IS_WINSOCKET
		248	SOCKET handle;
		249	#endif
216	} ANFD;	250	} ANFD;
217		251
218	typedef struct	252	typedef struct
219	{	253	{
220	W w;	254	W w;
221	int events;	255	int events;
222	} ANPENDING;	256	} ANPENDING;
223		257
224	#if EV_MULTIPLICITY	258	#if EV_MULTIPLICITY
225		259
226	struct ev_loop	260	struct ev_loop
227	{	261	{
		262	ev_tstamp ev_rt_now;
		263	#define ev_rt_now ((loop)->ev_rt_now)
228	# define VAR(name,decl) decl;	264	#define VAR(name,decl) decl;
229	# include "ev_vars.h"	265	#include "ev_vars.h"
230	};
231	# undef VAR	266	#undef VAR
		267	};
232	# include "ev_wrap.h"	268	#include "ev_wrap.h"
		269
		270	static struct ev_loop default_loop_struct;
		271	struct ev_loop *ev_default_loop_ptr;
233		272
234	#else	273	#else
235		274
		275	ev_tstamp ev_rt_now;
236	# define VAR(name,decl) static decl;	276	#define VAR(name,decl) static decl;
237	# include "ev_vars.h"	277	#include "ev_vars.h"
238	# undef VAR	278	#undef VAR
		279
		280	static int ev_default_loop_ptr;
239		281
240	#endif	282	#endif
241		283
242	/*****************************************************************************/	284	/*****************************************************************************/
243		285
244	inline ev_tstamp	286	ev_tstamp
245	ev_time (void)	287	ev_time (void)
246	{	288	{
247	#if EV_USE_REALTIME	289	#if EV_USE_REALTIME
248	struct timespec ts;	290	struct timespec ts;
249	clock_gettime (CLOCK_REALTIME, &ts);	291	clock_gettime (CLOCK_REALTIME, &ts);
…		…
268	#endif	310	#endif
269		311
270	return ev_time ();	312	return ev_time ();
271	}	313	}
272		314
		315	#if EV_MULTIPLICITY
273	ev_tstamp	316	ev_tstamp
274	ev_now (EV_P)	317	ev_now (EV_P)
275	{	318	{
276	return rt_now;	319	return ev_rt_now;
277	}	320	}
		321	#endif
278		322
279	#define array_roundsize(base,n) ((n) \| 4 & ~3)	323	#define array_roundsize(type,n) (((n) \| 4) & ~3)
280		324
281	#define array_needsize(base,cur,cnt,init) \	325	#define array_needsize(type,base,cur,cnt,init) \
282	if (expect_false ((cnt) > cur)) \	326	if (expect_false ((cnt) > cur)) \
283	{ \	327	{ \
284	int newcnt = cur; \	328	int newcnt = cur; \
285	do \	329	do \
286	{ \	330	{ \
287	newcnt = array_roundsize (base, newcnt << 1); \	331	newcnt = array_roundsize (type, newcnt << 1); \
288	} \	332	} \
289	while ((cnt) > newcnt); \	333	while ((cnt) > newcnt); \
290	\	334	\
291	base = ev_realloc (base, sizeof (base) (newcnt)); \	335	base = (type )ev_realloc (base, sizeof (type) (newcnt));\
292	init (base + cur, newcnt - cur); \	336	init (base + cur, newcnt - cur); \
293	cur = newcnt; \	337	cur = newcnt; \
294	}	338	}
295		339
296	#define array_slim(stem) \	340	#define array_slim(type,stem) \
297	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \	341	if (stem ## max < array_roundsize (stem ## cnt >> 2)) \
298	{ \	342	{ \
299	stem ## max = array_roundsize (stem ## cnt >> 1); \	343	stem ## max = array_roundsize (stem ## cnt >> 1); \
300	base = ev_realloc (base, sizeof (base) (stem ## max)); \	344	base = (type )ev_realloc (base, sizeof (type) (stem ## max));\
301	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\	345	fprintf (stderr, "slimmed down " # stem " to %d\n", stem ## max);/D/\
302	}	346	}
303
304	/* microsoft's pseudo-c is quite far from C as the rest of the world and the standard knows it */
305	/* bringing us everlasting joy in form of stupid extra macros that are not required in C */
306	#define array_free_microshit(stem) \
307	ev_free (stem ## s); stem ## cnt = stem ## max = 0;
308		347
309	#define array_free(stem, idx) \	348	#define array_free(stem, idx) \
310	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;	349	ev_free (stem ## s idx); stem ## cnt idx = stem ## max idx = 0;
311		350
312	/*****************************************************************************/	351	/*****************************************************************************/
…		…
322		361
323	++base;	362	++base;
324	}	363	}
325	}	364	}
326		365
327	static void	366	void
328	event (EV_P_ W w, int events)	367	ev_feed_event (EV_P_ void *w, int revents)
329	{	368	{
330	if (w->pending)	369	W w_ = (W)w;
		370
		371	if (expect_false (w_->pending))
331	{	372	{
332	pendings [ABSPRI (w)][w->pending - 1].events \|= events;	373	pendings [ABSPRI (w_)][w_->pending - 1].events \|= revents;
333	return;	374	return;
334	}	375	}
335		376
336	w->pending = ++pendingcnt [ABSPRI (w)];	377	w_->pending = ++pendingcnt [ABSPRI (w_)];
337	array_needsize (pendings [ABSPRI (w)], pendingmax [ABSPRI (w)], pendingcnt [ABSPRI (w)], (void));	378	array_needsize (ANPENDING, pendings [ABSPRI (w_)], pendingmax [ABSPRI (w_)], pendingcnt [ABSPRI (w_)], EMPTY2);
338	pendings [ABSPRI (w)][w->pending - 1].w = w;	379	pendings [ABSPRI (w_)][w_->pending - 1].w = w_;
339	pendings [ABSPRI (w)][w->pending - 1].events = events;	380	pendings [ABSPRI (w_)][w_->pending - 1].events = revents;
340	}	381	}
341		382
342	static void	383	static void
343	queue_events (EV_P_ W *events, int eventcnt, int type)	384	queue_events (EV_P_ W *events, int eventcnt, int type)
344	{	385	{
345	int i;	386	int i;
346		387
347	for (i = 0; i < eventcnt; ++i)	388	for (i = 0; i < eventcnt; ++i)
348	event (EV_A_ events [i], type);	389	ev_feed_event (EV_A_ events [i], type);
349	}	390	}
350		391
351	static void	392	inline void
352	fd_event (EV_P_ int fd, int events)	393	fd_event (EV_P_ int fd, int revents)
353	{	394	{
354	ANFD *anfd = anfds + fd;	395	ANFD *anfd = anfds + fd;
355	struct ev_io *w;	396	struct ev_io *w;
356		397
357	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	398	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
358	{	399	{
359	int ev = w->events & events;	400	int ev = w->events & revents;
360		401
361	if (ev)	402	if (ev)
362	event (EV_A_ (W)w, ev);	403	ev_feed_event (EV_A_ (W)w, ev);
363	}	404	}
		405	}
		406
		407	void
		408	ev_feed_fd_event (EV_P_ int fd, int revents)
		409	{
		410	fd_event (EV_A_ fd, revents);
364	}	411	}
365		412
366	/*****************************************************************************/	413	/*****************************************************************************/
367		414
368	static void	415	inline void
369	fd_reify (EV_P)	416	fd_reify (EV_P)
370	{	417	{
371	int i;	418	int i;
372		419
373	for (i = 0; i < fdchangecnt; ++i)	420	for (i = 0; i < fdchangecnt; ++i)
…		…
379	int events = 0;	426	int events = 0;
380		427
381	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)	428	for (w = (struct ev_io )anfd->head; w; w = (struct ev_io )((WL)w)->next)
382	events \|= w->events;	429	events \|= w->events;
383		430
		431	#if EV_SELECT_IS_WINSOCKET
		432	if (events)
		433	{
		434	unsigned long argp;
		435	anfd->handle = _get_osfhandle (fd);
		436	assert (("libev only supports socket fds in this configuration", ioctlsocket (anfd->handle, FIONREAD, &argp) == 0));
		437	}
		438	#endif
		439
384	anfd->reify = 0;	440	anfd->reify = 0;
385		441
386	method_modify (EV_A_ fd, anfd->events, events);	442	method_modify (EV_A_ fd, anfd->events, events);
387	anfd->events = events;	443	anfd->events = events;
388	}	444	}
…		…
391	}	447	}
392		448
393	static void	449	static void
394	fd_change (EV_P_ int fd)	450	fd_change (EV_P_ int fd)
395	{	451	{
396	if (anfds [fd].reify)	452	if (expect_false (anfds [fd].reify))
397	return;	453	return;
398		454
399	anfds [fd].reify = 1;	455	anfds [fd].reify = 1;
400		456
401	++fdchangecnt;	457	++fdchangecnt;
402	array_needsize (fdchanges, fdchangemax, fdchangecnt, (void));	458	array_needsize (int, fdchanges, fdchangemax, fdchangecnt, EMPTY2);
403	fdchanges [fdchangecnt - 1] = fd;	459	fdchanges [fdchangecnt - 1] = fd;
404	}	460	}
405		461
406	static void	462	static void
407	fd_kill (EV_P_ int fd)	463	fd_kill (EV_P_ int fd)
…		…
409	struct ev_io *w;	465	struct ev_io *w;
410		466
411	while ((w = (struct ev_io *)anfds [fd].head))	467	while ((w = (struct ev_io *)anfds [fd].head))
412	{	468	{
413	ev_io_stop (EV_A_ w);	469	ev_io_stop (EV_A_ w);
414	event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);	470	ev_feed_event (EV_A_ (W)w, EV_ERROR \| EV_READ \| EV_WRITE);
415	}	471	}
416	}	472	}
417		473
418	static int	474	inline int
419	fd_valid (int fd)	475	fd_valid (int fd)
420	{	476	{
421	#ifdef WIN32	477	#ifdef _WIN32
422	return !!win32_get_osfhandle (fd);	478	return _get_osfhandle (fd) != -1;
423	#else	479	#else
424	return fcntl (fd, F_GETFD) != -1;	480	return fcntl (fd, F_GETFD) != -1;
425	#endif	481	#endif
426	}	482	}
427		483
…		…
507		563
508	heap [k] = w;	564	heap [k] = w;
509	((W)heap [k])->active = k + 1;	565	((W)heap [k])->active = k + 1;
510	}	566	}
511		567
		568	inline void
		569	adjustheap (WT *heap, int N, int k)
		570	{
		571	upheap (heap, k);
		572	downheap (heap, N, k);
		573	}
		574
512	/*****************************************************************************/	575	/*****************************************************************************/
513		576
514	typedef struct	577	typedef struct
515	{	578	{
516	WL head;	579	WL head;
…		…
537	}	600	}
538		601
539	static void	602	static void
540	sighandler (int signum)	603	sighandler (int signum)
541	{	604	{
542	#if WIN32	605	#if _WIN32
543	signal (signum, sighandler);	606	signal (signum, sighandler);
544	#endif	607	#endif
545		608
546	signals [signum - 1].gotsig = 1;	609	signals [signum - 1].gotsig = 1;
547		610
…		…
552	write (sigpipe [1], &signum, 1);	615	write (sigpipe [1], &signum, 1);
553	errno = old_errno;	616	errno = old_errno;
554	}	617	}
555	}	618	}
556		619
		620	void
		621	ev_feed_signal_event (EV_P_ int signum)
		622	{
		623	WL w;
		624
		625	#if EV_MULTIPLICITY
		626	assert (("feeding signal events is only supported in the default loop", loop == ev_default_loop_ptr));
		627	#endif
		628
		629	--signum;
		630
		631	if (signum < 0 \|\| signum >= signalmax)
		632	return;
		633
		634	signals [signum].gotsig = 0;
		635
		636	for (w = signals [signum].head; w; w = w->next)
		637	ev_feed_event (EV_A_ (W)w, EV_SIGNAL);
		638	}
		639
557	static void	640	static void
558	sigcb (EV_P_ struct ev_io *iow, int revents)	641	sigcb (EV_P_ struct ev_io *iow, int revents)
559	{	642	{
560	WL w;
561	int signum;	643	int signum;
562		644
563	read (sigpipe [0], &revents, 1);	645	read (sigpipe [0], &revents, 1);
564	gotsig = 0;	646	gotsig = 0;
565		647
566	for (signum = signalmax; signum--; )	648	for (signum = signalmax; signum--; )
567	if (signals [signum].gotsig)	649	if (signals [signum].gotsig)
568	{	650	ev_feed_signal_event (EV_A_ signum + 1);
569	signals [signum].gotsig = 0;	651	}
570		652
571	for (w = signals [signum].head; w; w = w->next)	653	static void
572	event (EV_A_ (W)w, EV_SIGNAL);	654	fd_intern (int fd)
573	}	655	{
		656	#ifdef _WIN32
		657	int arg = 1;
		658	ioctlsocket (_get_osfhandle (fd), FIONBIO, &arg);
		659	#else
		660	fcntl (fd, F_SETFD, FD_CLOEXEC);
		661	fcntl (fd, F_SETFL, O_NONBLOCK);
		662	#endif
574	}	663	}
575		664
576	static void	665	static void
577	siginit (EV_P)	666	siginit (EV_P)
578	{	667	{
579	#ifndef WIN32	668	fd_intern (sigpipe [0]);
580	fcntl (sigpipe [0], F_SETFD, FD_CLOEXEC);	669	fd_intern (sigpipe [1]);
581	fcntl (sigpipe [1], F_SETFD, FD_CLOEXEC);
582
583	/* rather than sort out wether we really need nb, set it */
584	fcntl (sigpipe [0], F_SETFL, O_NONBLOCK);
585	fcntl (sigpipe [1], F_SETFL, O_NONBLOCK);
586	#endif
587		670
588	ev_io_set (&sigev, sigpipe [0], EV_READ);	671	ev_io_set (&sigev, sigpipe [0], EV_READ);
589	ev_io_start (EV_A_ &sigev);	672	ev_io_start (EV_A_ &sigev);
590	ev_unref (EV_A); /* child watcher should not keep loop alive */	673	ev_unref (EV_A); /* child watcher should not keep loop alive */
591	}	674	}
592		675
593	/*****************************************************************************/	676	/*****************************************************************************/
594		677
595	static struct ev_child *childs [PID_HASHSIZE];	678	static struct ev_child *childs [PID_HASHSIZE];
596		679
597	#ifndef WIN32	680	#ifndef _WIN32
598		681
599	static struct ev_signal childev;	682	static struct ev_signal childev;
600		683
601	#ifndef WCONTINUED	684	#ifndef WCONTINUED
602	# define WCONTINUED 0	685	# define WCONTINUED 0
…		…
611	if (w->pid == pid \|\| !w->pid)	694	if (w->pid == pid \|\| !w->pid)
612	{	695	{
613	ev_priority (w) = ev_priority (sw); /* need to do it now */	696	ev_priority (w) = ev_priority (sw); /* need to do it now */
614	w->rpid = pid;	697	w->rpid = pid;
615	w->rstatus = status;	698	w->rstatus = status;
616	event (EV_A_ (W)w, EV_CHILD);	699	ev_feed_event (EV_A_ (W)w, EV_CHILD);
617	}	700	}
618	}	701	}
619		702
620	static void	703	static void
621	childcb (EV_P_ struct ev_signal *sw, int revents)	704	childcb (EV_P_ struct ev_signal *sw, int revents)
…		…
623	int pid, status;	706	int pid, status;
624		707
625	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))	708	if (0 < (pid = waitpid (-1, &status, WNOHANG \| WUNTRACED \| WCONTINUED)))
626	{	709	{
627	/* make sure we are called again until all childs have been reaped */	710	/* make sure we are called again until all childs have been reaped */
628	event (EV_A_ (W)sw, EV_SIGNAL);	711	ev_feed_event (EV_A_ (W)sw, EV_SIGNAL);
629		712
630	child_reap (EV_A_ sw, pid, pid, status);	713	child_reap (EV_A_ sw, pid, pid, status);
631	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */	714	child_reap (EV_A_ sw, 0, pid, status); /* this might trigger a watcher twice, but event catches that */
632	}	715	}
633	}	716	}
634		717
635	#endif	718	#endif
636		719
637	/*****************************************************************************/	720	/*****************************************************************************/
638		721
		722	#if EV_USE_PORT
		723	# include "ev_port.c"
		724	#endif
639	#if EV_USE_KQUEUE	725	#if EV_USE_KQUEUE
640	# include "ev_kqueue.c"	726	# include "ev_kqueue.c"
641	#endif	727	#endif
642	#if EV_USE_EPOLL	728	#if EV_USE_EPOLL
643	# include "ev_epoll.c"	729	# include "ev_epoll.c"
…		…
663		749
664	/* return true if we are running with elevated privileges and should ignore env variables */	750	/* return true if we are running with elevated privileges and should ignore env variables */
665	static int	751	static int
666	enable_secure (void)	752	enable_secure (void)
667	{	753	{
668	#ifdef WIN32	754	#ifdef _WIN32
669	return 0;	755	return 0;
670	#else	756	#else
671	return getuid () != geteuid ()	757	return getuid () != geteuid ()
672	\|\| getgid () != getegid ();	758	\|\| getgid () != getegid ();
673	#endif	759	#endif
674	}	760	}
675		761
676	int	762	unsigned int
677	ev_method (EV_P)	763	ev_method (EV_P)
678	{	764	{
679	return method;	765	return method;
680	}	766	}
681		767
682	static void	768	static void
683	loop_init (EV_P_ int methods)	769	loop_init (EV_P_ unsigned int flags)
684	{	770	{
685	if (!method)	771	if (!method)
686	{	772	{
687	#if EV_USE_MONOTONIC	773	#if EV_USE_MONOTONIC
688	{	774	{
…		…
690	if (!clock_gettime (CLOCK_MONOTONIC, &ts))	776	if (!clock_gettime (CLOCK_MONOTONIC, &ts))
691	have_monotonic = 1;	777	have_monotonic = 1;
692	}	778	}
693	#endif	779	#endif
694		780
695	rt_now = ev_time ();	781	ev_rt_now = ev_time ();
696	mn_now = get_clock ();	782	mn_now = get_clock ();
697	now_floor = mn_now;	783	now_floor = mn_now;
698	rtmn_diff = rt_now - mn_now;	784	rtmn_diff = ev_rt_now - mn_now;
699		785
700	if (methods == EVMETHOD_AUTO)	786	if (!(flags & EVFLAG_NOENV) && !enable_secure () && getenv ("LIBEV_FLAGS"))
701	if (!enable_secure () && getenv ("LIBEV_METHODS"))
702	methods = atoi (getenv ("LIBEV_METHODS"));	787	flags = atoi (getenv ("LIBEV_FLAGS"));
703	else	788
704	methods = EVMETHOD_ANY;	789	if (!(flags & 0x0000ffff))
		790	flags \|= 0x0000ffff;
705		791
706	method = 0;	792	method = 0;
707	#if EV_USE_WIN32	793	#if EV_USE_PORT
708	if (!method && (methods & EVMETHOD_WIN32 )) method = win32_init (EV_A_ methods);	794	if (!method && (flags & EVMETHOD_PORT )) method = port_init (EV_A_ flags);
709	#endif	795	#endif
710	#if EV_USE_KQUEUE	796	#if EV_USE_KQUEUE
711	if (!method && (methods & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ methods);	797	if (!method && (flags & EVMETHOD_KQUEUE)) method = kqueue_init (EV_A_ flags);
712	#endif	798	#endif
713	#if EV_USE_EPOLL	799	#if EV_USE_EPOLL
714	if (!method && (methods & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ methods);	800	if (!method && (flags & EVMETHOD_EPOLL )) method = epoll_init (EV_A_ flags);
715	#endif	801	#endif
716	#if EV_USE_POLL	802	#if EV_USE_POLL
717	if (!method && (methods & EVMETHOD_POLL )) method = poll_init (EV_A_ methods);	803	if (!method && (flags & EVMETHOD_POLL )) method = poll_init (EV_A_ flags);
718	#endif	804	#endif
719	#if EV_USE_SELECT	805	#if EV_USE_SELECT
720	if (!method && (methods & EVMETHOD_SELECT)) method = select_init (EV_A_ methods);	806	if (!method && (flags & EVMETHOD_SELECT)) method = select_init (EV_A_ flags);
721	#endif	807	#endif
722		808
723	ev_watcher_init (&sigev, sigcb);	809	ev_init (&sigev, sigcb);
724	ev_set_priority (&sigev, EV_MAXPRI);	810	ev_set_priority (&sigev, EV_MAXPRI);
725	}	811	}
726	}	812	}
727		813
728	void	814	static void
729	loop_destroy (EV_P)	815	loop_destroy (EV_P)
730	{	816	{
731	int i;	817	int i;
732		818
733	#if EV_USE_WIN32	819	#if EV_USE_PORT
734	if (method == EVMETHOD_WIN32 ) win32_destroy (EV_A);	820	if (method == EVMETHOD_PORT ) port_destroy (EV_A);
735	#endif	821	#endif
736	#if EV_USE_KQUEUE	822	#if EV_USE_KQUEUE
737	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);	823	if (method == EVMETHOD_KQUEUE) kqueue_destroy (EV_A);
738	#endif	824	#endif
739	#if EV_USE_EPOLL	825	#if EV_USE_EPOLL
…		…
748		834
749	for (i = NUMPRI; i--; )	835	for (i = NUMPRI; i--; )
750	array_free (pending, [i]);	836	array_free (pending, [i]);
751		837
752	/* have to use the microsoft-never-gets-it-right macro */	838	/* have to use the microsoft-never-gets-it-right macro */
753	array_free_microshit (fdchange);	839	array_free (fdchange, EMPTY0);
754	array_free_microshit (timer);	840	array_free (timer, EMPTY0);
755	array_free_microshit (periodic);	841	#if EV_PERIODICS
756	array_free_microshit (idle);	842	array_free (periodic, EMPTY0);
757	array_free_microshit (prepare);	843	#endif
758	array_free_microshit (check);	844	array_free (idle, EMPTY0);
		845	array_free (prepare, EMPTY0);
		846	array_free (check, EMPTY0);
759		847
760	method = 0;	848	method = 0;
761	}	849	}
762		850
763	static void	851	static void
764	loop_fork (EV_P)	852	loop_fork (EV_P)
765	{	853	{
		854	#if EV_USE_PORT
		855	if (method == EVMETHOD_PORT ) port_fork (EV_A);
		856	#endif
		857	#if EV_USE_KQUEUE
		858	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
		859	#endif
766	#if EV_USE_EPOLL	860	#if EV_USE_EPOLL
767	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);	861	if (method == EVMETHOD_EPOLL ) epoll_fork (EV_A);
768	#endif
769	#if EV_USE_KQUEUE
770	if (method == EVMETHOD_KQUEUE) kqueue_fork (EV_A);
771	#endif	862	#endif
772		863
773	if (ev_is_active (&sigev))	864	if (ev_is_active (&sigev))
774	{	865	{
775	/* default loop */	866	/* default loop */
…		…
788	postfork = 0;	879	postfork = 0;
789	}	880	}
790		881
791	#if EV_MULTIPLICITY	882	#if EV_MULTIPLICITY
792	struct ev_loop *	883	struct ev_loop *
793	ev_loop_new (int methods)	884	ev_loop_new (unsigned int flags)
794	{	885	{
795	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));	886	struct ev_loop loop = (struct ev_loop )ev_malloc (sizeof (struct ev_loop));
796		887
797	memset (loop, 0, sizeof (struct ev_loop));	888	memset (loop, 0, sizeof (struct ev_loop));
798		889
799	loop_init (EV_A_ methods);	890	loop_init (EV_A_ flags);
800		891
801	if (ev_method (EV_A))	892	if (ev_method (EV_A))
802	return loop;	893	return loop;
803		894
804	return 0;	895	return 0;
…		…
818	}	909	}
819		910
820	#endif	911	#endif
821		912
822	#if EV_MULTIPLICITY	913	#if EV_MULTIPLICITY
823	struct ev_loop default_loop_struct;
824	static struct ev_loop *default_loop;
825
826	struct ev_loop *	914	struct ev_loop *
		915	ev_default_loop_init (unsigned int flags)
827	#else	916	#else
828	static int default_loop;
829
830	int	917	int
		918	ev_default_loop (unsigned int flags)
831	#endif	919	#endif
832	ev_default_loop (int methods)
833	{	920	{
834	if (sigpipe [0] == sigpipe [1])	921	if (sigpipe [0] == sigpipe [1])
835	if (pipe (sigpipe))	922	if (pipe (sigpipe))
836	return 0;	923	return 0;
837		924
838	if (!default_loop)	925	if (!ev_default_loop_ptr)
839	{	926	{
840	#if EV_MULTIPLICITY	927	#if EV_MULTIPLICITY
841	struct ev_loop *loop = default_loop = &default_loop_struct;	928	struct ev_loop *loop = ev_default_loop_ptr = &default_loop_struct;
842	#else	929	#else
843	default_loop = 1;	930	ev_default_loop_ptr = 1;
844	#endif	931	#endif
845		932
846	loop_init (EV_A_ methods);	933	loop_init (EV_A_ flags);
847		934
848	if (ev_method (EV_A))	935	if (ev_method (EV_A))
849	{	936	{
850	siginit (EV_A);	937	siginit (EV_A);
851		938
852	#ifndef WIN32	939	#ifndef _WIN32
853	ev_signal_init (&childev, childcb, SIGCHLD);	940	ev_signal_init (&childev, childcb, SIGCHLD);
854	ev_set_priority (&childev, EV_MAXPRI);	941	ev_set_priority (&childev, EV_MAXPRI);
855	ev_signal_start (EV_A_ &childev);	942	ev_signal_start (EV_A_ &childev);
856	ev_unref (EV_A); /* child watcher should not keep loop alive */	943	ev_unref (EV_A); /* child watcher should not keep loop alive */
857	#endif	944	#endif
858	}	945	}
859	else	946	else
860	default_loop = 0;	947	ev_default_loop_ptr = 0;
861	}	948	}
862		949
863	return default_loop;	950	return ev_default_loop_ptr;
864	}	951	}
865		952
866	void	953	void
867	ev_default_destroy (void)	954	ev_default_destroy (void)
868	{	955	{
869	#if EV_MULTIPLICITY	956	#if EV_MULTIPLICITY
870	struct ev_loop *loop = default_loop;	957	struct ev_loop *loop = ev_default_loop_ptr;
871	#endif	958	#endif
872		959
873	#ifndef WIN32	960	#ifndef _WIN32
874	ev_ref (EV_A); /* child watcher */	961	ev_ref (EV_A); /* child watcher */
875	ev_signal_stop (EV_A_ &childev);	962	ev_signal_stop (EV_A_ &childev);
876	#endif	963	#endif
877		964
878	ev_ref (EV_A); /* signal watcher */	965	ev_ref (EV_A); /* signal watcher */
…		…
886		973
887	void	974	void
888	ev_default_fork (void)	975	ev_default_fork (void)
889	{	976	{
890	#if EV_MULTIPLICITY	977	#if EV_MULTIPLICITY
891	struct ev_loop *loop = default_loop;	978	struct ev_loop *loop = ev_default_loop_ptr;
892	#endif	979	#endif
893		980
894	if (method)	981	if (method)
895	postfork = 1;	982	postfork = 1;
896	}	983	}
897		984
898	/*****************************************************************************/	985	/*****************************************************************************/
899		986
900	static void	987	static int
		988	any_pending (EV_P)
		989	{
		990	int pri;
		991
		992	for (pri = NUMPRI; pri--; )
		993	if (pendingcnt [pri])
		994	return 1;
		995
		996	return 0;
		997	}
		998
		999	inline void
901	call_pending (EV_P)	1000	call_pending (EV_P)
902	{	1001	{
903	int pri;	1002	int pri;
904		1003
905	for (pri = NUMPRI; pri--; )	1004	for (pri = NUMPRI; pri--; )
906	while (pendingcnt [pri])	1005	while (pendingcnt [pri])
907	{	1006	{
908	ANPENDING *p = pendings [pri] + --pendingcnt [pri];	1007	ANPENDING *p = pendings [pri] + --pendingcnt [pri];
909		1008
910	if (p->w)	1009	if (expect_true (p->w))
911	{	1010	{
912	p->w->pending = 0;	1011	p->w->pending = 0;
913	p->w->cb (EV_A_ p->w, p->events);	1012	EV_CB_INVOKE (p->w, p->events);
914	}	1013	}
915	}	1014	}
916	}	1015	}
917		1016
918	static void	1017	inline void
919	timers_reify (EV_P)	1018	timers_reify (EV_P)
920	{	1019	{
921	while (timercnt && ((WT)timers [0])->at <= mn_now)	1020	while (timercnt && ((WT)timers [0])->at <= mn_now)
922	{	1021	{
923	struct ev_timer *w = timers [0];	1022	struct ev_timer *w = timers [0];
…		…
926		1025
927	/* first reschedule or stop timer */	1026	/* first reschedule or stop timer */
928	if (w->repeat)	1027	if (w->repeat)
929	{	1028	{
930	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));	1029	assert (("negative ev_timer repeat value found while processing timers", w->repeat > 0.));
		1030
931	((WT)w)->at = mn_now + w->repeat;	1031	((WT)w)->at += w->repeat;
		1032	if (((WT)w)->at < mn_now)
		1033	((WT)w)->at = mn_now;
		1034
932	downheap ((WT *)timers, timercnt, 0);	1035	downheap ((WT *)timers, timercnt, 0);
933	}	1036	}
934	else	1037	else
935	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */	1038	ev_timer_stop (EV_A_ w); /* nonrepeating: stop timer */
936		1039
937	event (EV_A_ (W)w, EV_TIMEOUT);	1040	ev_feed_event (EV_A_ (W)w, EV_TIMEOUT);
938	}	1041	}
939	}	1042	}
940		1043
941	static void	1044	#if EV_PERIODICS
		1045	inline void
942	periodics_reify (EV_P)	1046	periodics_reify (EV_P)
943	{	1047	{
944	while (periodiccnt && ((WT)periodics [0])->at <= rt_now)	1048	while (periodiccnt && ((WT)periodics [0])->at <= ev_rt_now)
945	{	1049	{
946	struct ev_periodic *w = periodics [0];	1050	struct ev_periodic *w = periodics [0];
947		1051
948	assert (("inactive timer on periodic heap detected", ev_is_active (w)));	1052	assert (("inactive timer on periodic heap detected", ev_is_active (w)));
949		1053
950	/* first reschedule or stop timer */	1054	/* first reschedule or stop timer */
951	if (w->interval)	1055	if (w->reschedule_cb)
952	{	1056	{
		1057	((WT)w)->at = w->reschedule_cb (w, ev_rt_now + 0.0001);
		1058	assert (("ev_periodic reschedule callback returned time in the past", ((WT)w)->at > ev_rt_now));
		1059	downheap ((WT *)periodics, periodiccnt, 0);
		1060	}
		1061	else if (w->interval)
		1062	{
953	((WT)w)->at += floor ((rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;	1063	((WT)w)->at += floor ((ev_rt_now - ((WT)w)->at) / w->interval + 1.) * w->interval;
954	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > rt_now));	1064	assert (("ev_periodic timeout in the past detected while processing timers, negative interval?", ((WT)w)->at > ev_rt_now));
955	downheap ((WT *)periodics, periodiccnt, 0);	1065	downheap ((WT *)periodics, periodiccnt, 0);
956	}	1066	}
957	else	1067	else
958	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */	1068	ev_periodic_stop (EV_A_ w); /* nonrepeating: stop timer */
959		1069
960	event (EV_A_ (W)w, EV_PERIODIC);	1070	ev_feed_event (EV_A_ (W)w, EV_PERIODIC);
961	}	1071	}
962	}	1072	}
963		1073
964	static void	1074	static void
965	periodics_reschedule (EV_P)	1075	periodics_reschedule (EV_P)
…		…
969	/* adjust periodics after time jump */	1079	/* adjust periodics after time jump */
970	for (i = 0; i < periodiccnt; ++i)	1080	for (i = 0; i < periodiccnt; ++i)
971	{	1081	{
972	struct ev_periodic *w = periodics [i];	1082	struct ev_periodic *w = periodics [i];
973		1083
		1084	if (w->reschedule_cb)
		1085	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
974	if (w->interval)	1086	else if (w->interval)
975	{
976	ev_tstamp diff = ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1087	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
977
978	if (fabs (diff) >= 1e-4)
979	{
980	ev_periodic_stop (EV_A_ w);
981	ev_periodic_start (EV_A_ w);
982
983	i = 0; /* restart loop, inefficient, but time jumps should be rare */
984	}
985	}
986	}	1088	}
		1089
		1090	/* now rebuild the heap */
		1091	for (i = periodiccnt >> 1; i--; )
		1092	downheap ((WT *)periodics, periodiccnt, i);
987	}	1093	}
		1094	#endif
988		1095
989	inline int	1096	inline int
990	time_update_monotonic (EV_P)	1097	time_update_monotonic (EV_P)
991	{	1098	{
992	mn_now = get_clock ();	1099	mn_now = get_clock ();
993		1100
994	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))	1101	if (expect_true (mn_now - now_floor < MIN_TIMEJUMP * .5))
995	{	1102	{
996	rt_now = rtmn_diff + mn_now;	1103	ev_rt_now = rtmn_diff + mn_now;
997	return 0;	1104	return 0;
998	}	1105	}
999	else	1106	else
1000	{	1107	{
1001	now_floor = mn_now;	1108	now_floor = mn_now;
1002	rt_now = ev_time ();	1109	ev_rt_now = ev_time ();
1003	return 1;	1110	return 1;
1004	}	1111	}
1005	}	1112	}
1006		1113
1007	static void	1114	inline void
1008	time_update (EV_P)	1115	time_update (EV_P)
1009	{	1116	{
1010	int i;	1117	int i;
1011		1118
1012	#if EV_USE_MONOTONIC	1119	#if EV_USE_MONOTONIC
…		…
1016	{	1123	{
1017	ev_tstamp odiff = rtmn_diff;	1124	ev_tstamp odiff = rtmn_diff;
1018		1125
1019	for (i = 4; --i; ) /* loop a few times, before making important decisions */	1126	for (i = 4; --i; ) /* loop a few times, before making important decisions */
1020	{	1127	{
1021	rtmn_diff = rt_now - mn_now;	1128	rtmn_diff = ev_rt_now - mn_now;
1022		1129
1023	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)	1130	if (fabs (odiff - rtmn_diff) < MIN_TIMEJUMP)
1024	return; /* all is well */	1131	return; /* all is well */
1025		1132
1026	rt_now = ev_time ();	1133	ev_rt_now = ev_time ();
1027	mn_now = get_clock ();	1134	mn_now = get_clock ();
1028	now_floor = mn_now;	1135	now_floor = mn_now;
1029	}	1136	}
1030		1137
		1138	# if EV_PERIODICS
1031	periodics_reschedule (EV_A);	1139	periodics_reschedule (EV_A);
		1140	# endif
1032	/* no timer adjustment, as the monotonic clock doesn't jump */	1141	/* no timer adjustment, as the monotonic clock doesn't jump */
1033	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */	1142	/* timers_reschedule (EV_A_ rtmn_diff - odiff) */
1034	}	1143	}
1035	}	1144	}
1036	else	1145	else
1037	#endif	1146	#endif
1038	{	1147	{
1039	rt_now = ev_time ();	1148	ev_rt_now = ev_time ();
1040		1149
1041	if (expect_false (mn_now > rt_now \|\| mn_now < rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))	1150	if (expect_false (mn_now > ev_rt_now \|\| mn_now < ev_rt_now - MAX_BLOCKTIME - MIN_TIMEJUMP))
1042	{	1151	{
		1152	#if EV_PERIODICS
1043	periodics_reschedule (EV_A);	1153	periodics_reschedule (EV_A);
		1154	#endif
1044		1155
1045	/* adjust timers. this is easy, as the offset is the same for all */	1156	/* adjust timers. this is easy, as the offset is the same for all */
1046	for (i = 0; i < timercnt; ++i)	1157	for (i = 0; i < timercnt; ++i)
1047	((WT)timers [i])->at += rt_now - mn_now;	1158	((WT)timers [i])->at += ev_rt_now - mn_now;
1048	}	1159	}
1049		1160
1050	mn_now = rt_now;	1161	mn_now = ev_rt_now;
1051	}	1162	}
1052	}	1163	}
1053		1164
1054	void	1165	void
1055	ev_ref (EV_P)	1166	ev_ref (EV_P)
…		…
1069	ev_loop (EV_P_ int flags)	1180	ev_loop (EV_P_ int flags)
1070	{	1181	{
1071	double block;	1182	double block;
1072	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;	1183	loop_done = flags & (EVLOOP_ONESHOT \| EVLOOP_NONBLOCK) ? 1 : 0;
1073		1184
1074	do	1185	while (activecnt)
1075	{	1186	{
1076	/* queue check watchers (and execute them) */	1187	/* queue check watchers (and execute them) */
1077	if (expect_false (preparecnt))	1188	if (expect_false (preparecnt))
1078	{	1189	{
1079	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);	1190	queue_events (EV_A_ (W *)prepares, preparecnt, EV_PREPARE);
…		…
1087	/* update fd-related kernel structures */	1198	/* update fd-related kernel structures */
1088	fd_reify (EV_A);	1199	fd_reify (EV_A);
1089		1200
1090	/* calculate blocking time */	1201	/* calculate blocking time */
1091		1202
1092	/* we only need this for !monotonic clockor timers, but as we basically	1203	/* we only need this for !monotonic clock or timers, but as we basically
1093	always have timers, we just calculate it always */	1204	always have timers, we just calculate it always */
1094	#if EV_USE_MONOTONIC	1205	#if EV_USE_MONOTONIC
1095	if (expect_true (have_monotonic))	1206	if (expect_true (have_monotonic))
1096	time_update_monotonic (EV_A);	1207	time_update_monotonic (EV_A);
1097	else	1208	else
1098	#endif	1209	#endif
1099	{	1210	{
1100	rt_now = ev_time ();	1211	ev_rt_now = ev_time ();
1101	mn_now = rt_now;	1212	mn_now = ev_rt_now;
1102	}	1213	}
1103		1214
1104	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)	1215	if (flags & EVLOOP_NONBLOCK \|\| idlecnt)
1105	block = 0.;	1216	block = 0.;
1106	else	1217	else
…		…
1111	{	1222	{
1112	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;	1223	ev_tstamp to = ((WT)timers [0])->at - mn_now + method_fudge;
1113	if (block > to) block = to;	1224	if (block > to) block = to;
1114	}	1225	}
1115		1226
		1227	#if EV_PERIODICS
1116	if (periodiccnt)	1228	if (periodiccnt)
1117	{	1229	{
1118	ev_tstamp to = ((WT)periodics [0])->at - rt_now + method_fudge;	1230	ev_tstamp to = ((WT)periodics [0])->at - ev_rt_now + method_fudge;
1119	if (block > to) block = to;	1231	if (block > to) block = to;
1120	}	1232	}
		1233	#endif
1121		1234
1122	if (block < 0.) block = 0.;	1235	if (expect_false (block < 0.)) block = 0.;
1123	}	1236	}
1124		1237
1125	method_poll (EV_A_ block);	1238	method_poll (EV_A_ block);
1126		1239
1127	/* update rt_now, do magic */	1240	/* update ev_rt_now, do magic */
1128	time_update (EV_A);	1241	time_update (EV_A);
1129		1242
1130	/* queue pending timers and reschedule them */	1243	/* queue pending timers and reschedule them */
1131	timers_reify (EV_A); /* relative timers called last */	1244	timers_reify (EV_A); /* relative timers called last */
		1245	#if EV_PERIODICS
1132	periodics_reify (EV_A); /* absolute timers called first */	1246	periodics_reify (EV_A); /* absolute timers called first */
		1247	#endif
1133		1248
1134	/* queue idle watchers unless io or timers are pending */	1249	/* queue idle watchers unless io or timers are pending */
1135	if (!pendingcnt)	1250	if (idlecnt && !any_pending (EV_A))
1136	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);	1251	queue_events (EV_A_ (W *)idles, idlecnt, EV_IDLE);
1137		1252
1138	/* queue check watchers, to be executed first */	1253	/* queue check watchers, to be executed first */
1139	if (checkcnt)	1254	if (expect_false (checkcnt))
1140	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);	1255	queue_events (EV_A_ (W *)checks, checkcnt, EV_CHECK);
1141		1256
1142	call_pending (EV_A);	1257	call_pending (EV_A);
		1258
		1259	if (expect_false (loop_done))
		1260	break;
1143	}	1261	}
1144	while (activecnt && !loop_done);
1145		1262
1146	if (loop_done != 2)	1263	if (loop_done != 2)
1147	loop_done = 0;	1264	loop_done = 0;
1148	}	1265	}
1149		1266
…		…
1209	void	1326	void
1210	ev_io_start (EV_P_ struct ev_io *w)	1327	ev_io_start (EV_P_ struct ev_io *w)
1211	{	1328	{
1212	int fd = w->fd;	1329	int fd = w->fd;
1213		1330
1214	if (ev_is_active (w))	1331	if (expect_false (ev_is_active (w)))
1215	return;	1332	return;
1216		1333
1217	assert (("ev_io_start called with negative fd", fd >= 0));	1334	assert (("ev_io_start called with negative fd", fd >= 0));
1218		1335
1219	ev_start (EV_A_ (W)w, 1);	1336	ev_start (EV_A_ (W)w, 1);
1220	array_needsize (anfds, anfdmax, fd + 1, anfds_init);	1337	array_needsize (ANFD, anfds, anfdmax, fd + 1, anfds_init);
1221	wlist_add ((WL *)&anfds[fd].head, (WL)w);	1338	wlist_add ((WL *)&anfds[fd].head, (WL)w);
1222		1339
1223	fd_change (EV_A_ fd);	1340	fd_change (EV_A_ fd);
1224	}	1341	}
1225		1342
1226	void	1343	void
1227	ev_io_stop (EV_P_ struct ev_io *w)	1344	ev_io_stop (EV_P_ struct ev_io *w)
1228	{	1345	{
1229	ev_clear_pending (EV_A_ (W)w);	1346	ev_clear_pending (EV_A_ (W)w);
1230	if (!ev_is_active (w))	1347	if (expect_false (!ev_is_active (w)))
1231	return;	1348	return;
		1349
		1350	assert (("ev_io_start called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
1232		1351
1233	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);	1352	wlist_del ((WL *)&anfds[w->fd].head, (WL)w);
1234	ev_stop (EV_A_ (W)w);	1353	ev_stop (EV_A_ (W)w);
1235		1354
1236	fd_change (EV_A_ w->fd);	1355	fd_change (EV_A_ w->fd);
1237	}	1356	}
1238		1357
1239	void	1358	void
1240	ev_timer_start (EV_P_ struct ev_timer *w)	1359	ev_timer_start (EV_P_ struct ev_timer *w)
1241	{	1360	{
1242	if (ev_is_active (w))	1361	if (expect_false (ev_is_active (w)))
1243	return;	1362	return;
1244		1363
1245	((WT)w)->at += mn_now;	1364	((WT)w)->at += mn_now;
1246		1365
1247	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));	1366	assert (("ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
1248		1367
1249	ev_start (EV_A_ (W)w, ++timercnt);	1368	ev_start (EV_A_ (W)w, ++timercnt);
1250	array_needsize (timers, timermax, timercnt, (void));	1369	array_needsize (struct ev_timer *, timers, timermax, timercnt, EMPTY2);
1251	timers [timercnt - 1] = w;	1370	timers [timercnt - 1] = w;
1252	upheap ((WT *)timers, timercnt - 1);	1371	upheap ((WT *)timers, timercnt - 1);
1253		1372
1254	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1373	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1255	}	1374	}
1256		1375
1257	void	1376	void
1258	ev_timer_stop (EV_P_ struct ev_timer *w)	1377	ev_timer_stop (EV_P_ struct ev_timer *w)
1259	{	1378	{
1260	ev_clear_pending (EV_A_ (W)w);	1379	ev_clear_pending (EV_A_ (W)w);
1261	if (!ev_is_active (w))	1380	if (expect_false (!ev_is_active (w)))
1262	return;	1381	return;
1263		1382
1264	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));	1383	assert (("internal timer heap corruption", timers [((W)w)->active - 1] == w));
1265		1384
1266	if (((W)w)->active < timercnt--)	1385	if (expect_true (((W)w)->active < timercnt--))
1267	{	1386	{
1268	timers [((W)w)->active - 1] = timers [timercnt];	1387	timers [((W)w)->active - 1] = timers [timercnt];
1269	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1388	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1270	}	1389	}
1271		1390
1272	((WT)w)->at = w->repeat;	1391	((WT)w)->at -= mn_now;
1273		1392
1274	ev_stop (EV_A_ (W)w);	1393	ev_stop (EV_A_ (W)w);
1275	}	1394	}
1276		1395
1277	void	1396	void
…		…
1280	if (ev_is_active (w))	1399	if (ev_is_active (w))
1281	{	1400	{
1282	if (w->repeat)	1401	if (w->repeat)
1283	{	1402	{
1284	((WT)w)->at = mn_now + w->repeat;	1403	((WT)w)->at = mn_now + w->repeat;
1285	downheap ((WT *)timers, timercnt, ((W)w)->active - 1);	1404	adjustheap ((WT *)timers, timercnt, ((W)w)->active - 1);
1286	}	1405	}
1287	else	1406	else
1288	ev_timer_stop (EV_A_ w);	1407	ev_timer_stop (EV_A_ w);
1289	}	1408	}
1290	else if (w->repeat)	1409	else if (w->repeat)
		1410	{
		1411	w->at = w->repeat;
1291	ev_timer_start (EV_A_ w);	1412	ev_timer_start (EV_A_ w);
		1413	}
1292	}	1414	}
1293		1415
		1416	#if EV_PERIODICS
1294	void	1417	void
1295	ev_periodic_start (EV_P_ struct ev_periodic *w)	1418	ev_periodic_start (EV_P_ struct ev_periodic *w)
1296	{	1419	{
1297	if (ev_is_active (w))	1420	if (expect_false (ev_is_active (w)))
1298	return;	1421	return;
1299		1422
		1423	if (w->reschedule_cb)
		1424	((WT)w)->at = w->reschedule_cb (w, ev_rt_now);
		1425	else if (w->interval)
		1426	{
1300	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));	1427	assert (("ev_periodic_start called with negative interval value", w->interval >= 0.));
1301
1302	/* this formula differs from the one in periodic_reify because we do not always round up */	1428	/* this formula differs from the one in periodic_reify because we do not always round up */
1303	if (w->interval)
1304	((WT)w)->at += ceil ((rt_now - ((WT)w)->at) / w->interval) * w->interval;	1429	((WT)w)->at += ceil ((ev_rt_now - ((WT)w)->at) / w->interval) * w->interval;
		1430	}
1305		1431
1306	ev_start (EV_A_ (W)w, ++periodiccnt);	1432	ev_start (EV_A_ (W)w, ++periodiccnt);
1307	array_needsize (periodics, periodicmax, periodiccnt, (void));	1433	array_needsize (struct ev_periodic *, periodics, periodicmax, periodiccnt, EMPTY2);
1308	periodics [periodiccnt - 1] = w;	1434	periodics [periodiccnt - 1] = w;
1309	upheap ((WT *)periodics, periodiccnt - 1);	1435	upheap ((WT *)periodics, periodiccnt - 1);
1310		1436
1311	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1437	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1312	}	1438	}
1313		1439
1314	void	1440	void
1315	ev_periodic_stop (EV_P_ struct ev_periodic *w)	1441	ev_periodic_stop (EV_P_ struct ev_periodic *w)
1316	{	1442	{
1317	ev_clear_pending (EV_A_ (W)w);	1443	ev_clear_pending (EV_A_ (W)w);
1318	if (!ev_is_active (w))	1444	if (expect_false (!ev_is_active (w)))
1319	return;	1445	return;
1320		1446
1321	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));	1447	assert (("internal periodic heap corruption", periodics [((W)w)->active - 1] == w));
1322		1448
1323	if (((W)w)->active < periodiccnt--)	1449	if (expect_true (((W)w)->active < periodiccnt--))
1324	{	1450	{
1325	periodics [((W)w)->active - 1] = periodics [periodiccnt];	1451	periodics [((W)w)->active - 1] = periodics [periodiccnt];
1326	downheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);	1452	adjustheap ((WT *)periodics, periodiccnt, ((W)w)->active - 1);
1327	}	1453	}
1328		1454
1329	ev_stop (EV_A_ (W)w);	1455	ev_stop (EV_A_ (W)w);
1330	}	1456	}
1331		1457
1332	void	1458	void
		1459	ev_periodic_again (EV_P_ struct ev_periodic *w)
		1460	{
		1461	/* TODO: use adjustheap and recalculation */
		1462	ev_periodic_stop (EV_A_ w);
		1463	ev_periodic_start (EV_A_ w);
		1464	}
		1465	#endif
		1466
		1467	void
1333	ev_idle_start (EV_P_ struct ev_idle *w)	1468	ev_idle_start (EV_P_ struct ev_idle *w)
1334	{	1469	{
1335	if (ev_is_active (w))	1470	if (expect_false (ev_is_active (w)))
1336	return;	1471	return;
1337		1472
1338	ev_start (EV_A_ (W)w, ++idlecnt);	1473	ev_start (EV_A_ (W)w, ++idlecnt);
1339	array_needsize (idles, idlemax, idlecnt, (void));	1474	array_needsize (struct ev_idle *, idles, idlemax, idlecnt, EMPTY2);
1340	idles [idlecnt - 1] = w;	1475	idles [idlecnt - 1] = w;
1341	}	1476	}
1342		1477
1343	void	1478	void
1344	ev_idle_stop (EV_P_ struct ev_idle *w)	1479	ev_idle_stop (EV_P_ struct ev_idle *w)
1345	{	1480	{
1346	ev_clear_pending (EV_A_ (W)w);	1481	ev_clear_pending (EV_A_ (W)w);
1347	if (ev_is_active (w))	1482	if (expect_false (!ev_is_active (w)))
1348	return;	1483	return;
1349		1484
1350	idles [((W)w)->active - 1] = idles [--idlecnt];	1485	idles [((W)w)->active - 1] = idles [--idlecnt];
1351	ev_stop (EV_A_ (W)w);	1486	ev_stop (EV_A_ (W)w);
1352	}	1487	}
1353		1488
1354	void	1489	void
1355	ev_prepare_start (EV_P_ struct ev_prepare *w)	1490	ev_prepare_start (EV_P_ struct ev_prepare *w)
1356	{	1491	{
1357	if (ev_is_active (w))	1492	if (expect_false (ev_is_active (w)))
1358	return;	1493	return;
1359		1494
1360	ev_start (EV_A_ (W)w, ++preparecnt);	1495	ev_start (EV_A_ (W)w, ++preparecnt);
1361	array_needsize (prepares, preparemax, preparecnt, (void));	1496	array_needsize (struct ev_prepare *, prepares, preparemax, preparecnt, EMPTY2);
1362	prepares [preparecnt - 1] = w;	1497	prepares [preparecnt - 1] = w;
1363	}	1498	}
1364		1499
1365	void	1500	void
1366	ev_prepare_stop (EV_P_ struct ev_prepare *w)	1501	ev_prepare_stop (EV_P_ struct ev_prepare *w)
1367	{	1502	{
1368	ev_clear_pending (EV_A_ (W)w);	1503	ev_clear_pending (EV_A_ (W)w);
1369	if (ev_is_active (w))	1504	if (expect_false (!ev_is_active (w)))
1370	return;	1505	return;
1371		1506
1372	prepares [((W)w)->active - 1] = prepares [--preparecnt];	1507	prepares [((W)w)->active - 1] = prepares [--preparecnt];
1373	ev_stop (EV_A_ (W)w);	1508	ev_stop (EV_A_ (W)w);
1374	}	1509	}
1375		1510
1376	void	1511	void
1377	ev_check_start (EV_P_ struct ev_check *w)	1512	ev_check_start (EV_P_ struct ev_check *w)
1378	{	1513	{
1379	if (ev_is_active (w))	1514	if (expect_false (ev_is_active (w)))
1380	return;	1515	return;
1381		1516
1382	ev_start (EV_A_ (W)w, ++checkcnt);	1517	ev_start (EV_A_ (W)w, ++checkcnt);
1383	array_needsize (checks, checkmax, checkcnt, (void));	1518	array_needsize (struct ev_check *, checks, checkmax, checkcnt, EMPTY2);
1384	checks [checkcnt - 1] = w;	1519	checks [checkcnt - 1] = w;
1385	}	1520	}
1386		1521
1387	void	1522	void
1388	ev_check_stop (EV_P_ struct ev_check *w)	1523	ev_check_stop (EV_P_ struct ev_check *w)
1389	{	1524	{
1390	ev_clear_pending (EV_A_ (W)w);	1525	ev_clear_pending (EV_A_ (W)w);
1391	if (ev_is_active (w))	1526	if (expect_false (!ev_is_active (w)))
1392	return;	1527	return;
1393		1528
1394	checks [((W)w)->active - 1] = checks [--checkcnt];	1529	checks [((W)w)->active - 1] = checks [--checkcnt];
1395	ev_stop (EV_A_ (W)w);	1530	ev_stop (EV_A_ (W)w);
1396	}	1531	}
…		…
1401		1536
1402	void	1537	void
1403	ev_signal_start (EV_P_ struct ev_signal *w)	1538	ev_signal_start (EV_P_ struct ev_signal *w)
1404	{	1539	{
1405	#if EV_MULTIPLICITY	1540	#if EV_MULTIPLICITY
1406	assert (("signal watchers are only supported in the default loop", loop == default_loop));	1541	assert (("signal watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1407	#endif	1542	#endif
1408	if (ev_is_active (w))	1543	if (expect_false (ev_is_active (w)))
1409	return;	1544	return;
1410		1545
1411	assert (("ev_signal_start called with illegal signal number", w->signum > 0));	1546	assert (("ev_signal_start called with illegal signal number", w->signum > 0));
1412		1547
1413	ev_start (EV_A_ (W)w, 1);	1548	ev_start (EV_A_ (W)w, 1);
1414	array_needsize (signals, signalmax, w->signum, signals_init);	1549	array_needsize (ANSIG, signals, signalmax, w->signum, signals_init);
1415	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);	1550	wlist_add ((WL *)&signals [w->signum - 1].head, (WL)w);
1416		1551
1417	if (!((WL)w)->next)	1552	if (!((WL)w)->next)
1418	{	1553	{
1419	#if WIN32	1554	#if _WIN32
1420	signal (w->signum, sighandler);	1555	signal (w->signum, sighandler);
1421	#else	1556	#else
1422	struct sigaction sa;	1557	struct sigaction sa;
1423	sa.sa_handler = sighandler;	1558	sa.sa_handler = sighandler;
1424	sigfillset (&sa.sa_mask);	1559	sigfillset (&sa.sa_mask);
…		…
1430		1565
1431	void	1566	void
1432	ev_signal_stop (EV_P_ struct ev_signal *w)	1567	ev_signal_stop (EV_P_ struct ev_signal *w)
1433	{	1568	{
1434	ev_clear_pending (EV_A_ (W)w);	1569	ev_clear_pending (EV_A_ (W)w);
1435	if (!ev_is_active (w))	1570	if (expect_false (!ev_is_active (w)))
1436	return;	1571	return;
1437		1572
1438	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);	1573	wlist_del ((WL *)&signals [w->signum - 1].head, (WL)w);
1439	ev_stop (EV_A_ (W)w);	1574	ev_stop (EV_A_ (W)w);
1440		1575
…		…
1444		1579
1445	void	1580	void
1446	ev_child_start (EV_P_ struct ev_child *w)	1581	ev_child_start (EV_P_ struct ev_child *w)
1447	{	1582	{
1448	#if EV_MULTIPLICITY	1583	#if EV_MULTIPLICITY
1449	assert (("child watchers are only supported in the default loop", loop == default_loop));	1584	assert (("child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
1450	#endif	1585	#endif
1451	if (ev_is_active (w))	1586	if (expect_false (ev_is_active (w)))
1452	return;	1587	return;
1453		1588
1454	ev_start (EV_A_ (W)w, 1);	1589	ev_start (EV_A_ (W)w, 1);
1455	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1590	wlist_add ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1456	}	1591	}
1457		1592
1458	void	1593	void
1459	ev_child_stop (EV_P_ struct ev_child *w)	1594	ev_child_stop (EV_P_ struct ev_child *w)
1460	{	1595	{
1461	ev_clear_pending (EV_A_ (W)w);	1596	ev_clear_pending (EV_A_ (W)w);
1462	if (ev_is_active (w))	1597	if (expect_false (!ev_is_active (w)))
1463	return;	1598	return;
1464		1599
1465	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);	1600	wlist_del ((WL *)&childs [w->pid & (PID_HASHSIZE - 1)], (WL)w);
1466	ev_stop (EV_A_ (W)w);	1601	ev_stop (EV_A_ (W)w);
1467	}	1602	}
…		…
1502	}	1637	}
1503		1638
1504	void	1639	void
1505	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)	1640	ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg)
1506	{	1641	{
1507	struct ev_once *once = ev_malloc (sizeof (struct ev_once));	1642	struct ev_once once = (struct ev_once )ev_malloc (sizeof (struct ev_once));
1508		1643
1509	if (!once)	1644	if (expect_false (!once))
		1645	{
1510	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);	1646	cb (EV_ERROR \| EV_READ \| EV_WRITE \| EV_TIMEOUT, arg);
1511	else	1647	return;
1512	{	1648	}
		1649
1513	once->cb = cb;	1650	once->cb = cb;
1514	once->arg = arg;	1651	once->arg = arg;
1515		1652
1516	ev_watcher_init (&once->io, once_cb_io);	1653	ev_init (&once->io, once_cb_io);
1517	if (fd >= 0)	1654	if (fd >= 0)
1518	{	1655	{
1519	ev_io_set (&once->io, fd, events);	1656	ev_io_set (&once->io, fd, events);
1520	ev_io_start (EV_A_ &once->io);	1657	ev_io_start (EV_A_ &once->io);
1521	}	1658	}
1522		1659
1523	ev_watcher_init (&once->to, once_cb_to);	1660	ev_init (&once->to, once_cb_to);
1524	if (timeout >= 0.)	1661	if (timeout >= 0.)
1525	{	1662	{
1526	ev_timer_set (&once->to, timeout, 0.);	1663	ev_timer_set (&once->to, timeout, 0.);
1527	ev_timer_start (EV_A_ &once->to);	1664	ev_timer_start (EV_A_ &once->to);
1528	}
1529	}	1665	}
1530	}	1666	}
1531		1667
		1668	#ifdef __cplusplus
		1669	}
		1670	#endif
		1671

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Comparing libev/ev.c (file contents): Revision 1.71 by root, Tue Nov 6 13:17:55 2007 UTC vs. Revision 1.125 by root, Sat Nov 17 02:28:43 2007 UTC

Diff Legend

Comparing libev/ev.c (file contents):
Revision 1.71 by root, Tue Nov 6 13:17:55 2007 UTC vs.
Revision 1.125 by root, Sat Nov 17 02:28:43 2007 UTC