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

Comparing libev/ev.h (file contents):
Revision 1.85 by root, Fri Dec 14 21:07:13 2007 UTC vs.
Revision 1.146 by root, Fri Oct 22 06:14:28 2010 UTC

…		…
1	/*	1	/*
		2	* libev native API header
		3	*
2	* Copyright (c) 2007 Marc Alexander Lehmann <libev@schmorp.de>	4	* Copyright (c) 2007,2008,2009,2010 Marc Alexander Lehmann <libev@schmorp.de>
3	* All rights reserved.	5	* All rights reserved.
4	*	6	*
5	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without modifica-
6	* modification, are permitted provided that the following conditions are	8	* tion, are permitted provided that the following conditions are met:
7	* met:	9	*
		10	* 1. Redistributions of source code must retain the above copyright notice,
		11	* this list of conditions and the following disclaimer.
		12	*
		13	* 2. Redistributions in binary form must reproduce the above copyright
		14	* notice, this list of conditions and the following disclaimer in the
		15	* documentation and/or other materials provided with the distribution.
		16	*
		17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
		18	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MER-
		19	* CHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
		20	* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPE-
		21	* CIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
		22	* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
		23	* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
		24	* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTH-
		25	* ERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
		26	* OF THE POSSIBILITY OF SUCH DAMAGE.
8	*	27	*
9	* * Redistributions of source code must retain the above copyright	28	* Alternatively, the contents of this file may be used under the terms of
10	* notice, this list of conditions and the following disclaimer.	29	* the GNU General Public License ("GPL") version 2 or any later version,
11	*	30	* in which case the provisions of the GPL are applicable instead of
12	* * Redistributions in binary form must reproduce the above	31	* the above. If you wish to allow the use of your version of this file
13	* copyright notice, this list of conditions and the following	32	* only under the terms of the GPL and not to allow others to use your
14	* disclaimer in the documentation and/or other materials provided	33	* version of this file under the BSD license, indicate your decision
15	* with the distribution.	34	* by deleting the provisions above and replace them with the notice
16	*	35	* and other provisions required by the GPL. If you do not delete the
17	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS	36	* provisions above, a recipient may use your version of this file under
18	* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT	37	* either the BSD or the GPL.
19	* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
20	* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
21	* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
22	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
23	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24	* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25	* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26	* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
27	* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28	*/	38	*/
29		39
30	#ifndef EV_H__	40	#ifndef EV_H_
31	#define EV_H__	41	#define EV_H_
32		42
33	#ifdef __cplusplus	43	#ifdef __cplusplus
34	extern "C" {	44	extern "C" {
35	#endif	45	#endif
36		46
		47	/*****************************************************************************/
		48
		49	/* pre-4.0 compatibility */
		50	#ifndef EV_COMPAT3
		51	# define EV_COMPAT3 1
		52	#endif
		53
		54	#ifndef EV_FEATURES
		55	# define EV_FEATURES 0x7f
		56	#endif
		57
		58	#define EV_FEATURE_CODE ((EV_FEATURES) & 1)
		59	#define EV_FEATURE_DATA ((EV_FEATURES) & 2)
		60	#define EV_FEATURE_CONFIG ((EV_FEATURES) & 4)
		61	#define EV_FEATURE_API ((EV_FEATURES) & 8)
		62	#define EV_FEATURE_WATCHERS ((EV_FEATURES) & 16)
		63	#define EV_FEATURE_BACKENDS ((EV_FEATURES) & 32)
		64	#define EV_FEATURE_OS ((EV_FEATURES) & 64)
		65
		66	/* these priorities are inclusive, higher priorities will be invoked earlier */
		67	#ifndef EV_MINPRI
		68	# define EV_MINPRI (EV_FEATURE_CONFIG ? -2 : 0)
		69	#endif
		70	#ifndef EV_MAXPRI
		71	# define EV_MAXPRI (EV_FEATURE_CONFIG ? +2 : 0)
		72	#endif
		73
		74	#ifndef EV_MULTIPLICITY
		75	# define EV_MULTIPLICITY EV_FEATURE_CONFIG
		76	#endif
		77
		78	#ifndef EV_PERIODIC_ENABLE
		79	# define EV_PERIODIC_ENABLE EV_FEATURE_WATCHERS
		80	#endif
		81
		82	#ifndef EV_STAT_ENABLE
		83	# define EV_STAT_ENABLE EV_FEATURE_WATCHERS
		84	#endif
		85
		86	#ifndef EV_PREPARE_ENABLE
		87	# define EV_PREPARE_ENABLE EV_FEATURE_WATCHERS
		88	#endif
		89
		90	#ifndef EV_CHECK_ENABLE
		91	# define EV_CHECK_ENABLE EV_FEATURE_WATCHERS
		92	#endif
		93
		94	#ifndef EV_IDLE_ENABLE
		95	# define EV_IDLE_ENABLE EV_FEATURE_WATCHERS
		96	#endif
		97
		98	#ifndef EV_FORK_ENABLE
		99	# define EV_FORK_ENABLE EV_FEATURE_WATCHERS
		100	#endif
		101
		102	#ifndef EV_SIGNAL_ENABLE
		103	# define EV_SIGNAL_ENABLE EV_FEATURE_WATCHERS
		104	#endif
		105
		106	#ifndef EV_CHILD_ENABLE
		107	# ifdef _WIN32
		108	# define EV_CHILD_ENABLE 0
		109	# else
		110	# define EV_CHILD_ENABLE EV_FEATURE_WATCHERS
		111	#endif
		112	#endif
		113
		114	#ifndef EV_ASYNC_ENABLE
		115	# define EV_ASYNC_ENABLE EV_FEATURE_WATCHERS
		116	#endif
		117
		118	#ifndef EV_EMBED_ENABLE
		119	# define EV_EMBED_ENABLE EV_FEATURE_WATCHERS
		120	#endif
		121
		122	#ifndef EV_WALK_ENABLE
		123	# define EV_WALK_ENABLE 0 /* not yet */
		124	#endif
		125
		126	/*****************************************************************************/
		127
		128	#if EV_CHILD_ENABLE && !EV_SIGNAL_ENABLE
		129	# undef EV_SIGNAL_ENABLE
		130	# define EV_SIGNAL_ENABLE 1
		131	#endif
		132
		133	/*****************************************************************************/
		134
37	typedef double ev_tstamp;	135	typedef double ev_tstamp;
38		136
39	/* these priorities are inclusive, higher priorities will be called earlier */	137	#ifndef EV_ATOMIC_T
40	#ifndef EV_MINPRI	138	# include <signal.h>
41	# define EV_MINPRI -2	139	# define EV_ATOMIC_T sig_atomic_t volatile
42	#endif	140	#endif
43	#ifndef EV_MAXPRI
44	# define EV_MAXPRI +2
45	#endif
46
47	#ifndef EV_MULTIPLICITY
48	# define EV_MULTIPLICITY 1
49	#endif
50
51	#ifndef EV_PERIODIC_ENABLE
52	# define EV_PERIODIC_ENABLE 1
53	#endif
54
55	#ifndef EV_STAT_ENABLE
56	# define EV_STAT_ENABLE 1
57	#endif
58
59	#ifndef EV_IDLE_ENABLE
60	# define EV_IDLE_ENABLE 1
61	#endif
62
63	#ifndef EV_FORK_ENABLE
64	# define EV_FORK_ENABLE 1
65	#endif
66
67	#ifndef EV_EMBED_ENABLE
68	# define EV_EMBED_ENABLE 1
69	#endif
70
71	/*****************************************************************************/
72		141
73	#if EV_STAT_ENABLE	142	#if EV_STAT_ENABLE
		143	# ifdef _WIN32
		144	# include <time.h>
		145	# include <sys/types.h>
		146	# endif
74	# include <sys/stat.h>	147	# include <sys/stat.h>
		148	#endif
		149
		150	/* in C++ we can use this to provide default arguments */
		151	#ifdef __cplusplus
		152	# define EV_DEFARG(x) = x
		153	#else
		154	# define EV_DEFARG(x)
75	#endif	155	#endif
76		156
77	/* support multiple event loops? */	157	/* support multiple event loops? */
78	#if EV_MULTIPLICITY	158	#if EV_MULTIPLICITY
79	struct ev_loop;	159	struct ev_loop;
80	# define EV_P struct ev_loop *loop	160	# define EV_P struct ev_loop loop / a loop as sole parameter in a declaration */
81	# define EV_P_ EV_P,	161	# define EV_P_ EV_P, /* a loop as first of multiple parameters */
82	# define EV_A loop	162	# define EV_A loop /* a loop as sole argument to a function call */
83	# define EV_A_ EV_A,	163	# define EV_A_ EV_A, /* a loop as first of multiple arguments */
84	# define EV_DEFAULT ev_default_loop (0)	164	# define EV_DEFAULT_UC ev_default_loop_uc () /* the default loop, if initialised, as sole arg */
85	# define EV_DEFAULT_ EV_DEFAULT,	165	# define EV_DEFAULT_UC_ EV_DEFAULT_UC, /* the default loop as first of multiple arguments */
		166	# define EV_DEFAULT ev_default_loop (0) /* the default loop as sole arg */
		167	# define EV_DEFAULT_ EV_DEFAULT, /* the default loop as first of multiple arguments */
		168	# define EV_PDEF EV_P EV_DEFARG (EV_DEFAULT_UC) /* EV_P, but with default argument in C++ */
		169	# define EV_PDEF_ EV_P EV_DEFARG (EV_DEFAULT_UC), /* EV_P_, but with default argument in C++ */
86	#else	170	#else
87	# define EV_P void	171	# define EV_P void
88	# define EV_P_	172	# define EV_P_
89	# define EV_A	173	# define EV_A
90	# define EV_A_	174	# define EV_A_
91	# define EV_DEFAULT	175	# define EV_DEFAULT
92	# define EV_DEFAULT_	176	# define EV_DEFAULT_
93		177	# define EV_DEFAULT_UC
		178	# define EV_DEFAULT_UC_
		179	# define EV_PDEF EV_P
		180	# define EV_PDEF_ EV_P_
94	# undef EV_EMBED_ENABLE	181	# undef EV_EMBED_ENABLE
95	#endif	182	#endif
96		183
		184	/* EV_INLINE is used for functions in header files */
		185	#if __STDC_VERSION__ >= 199901L \|\| __GNUC__ >= 3
		186	# define EV_INLINE static inline
		187	#else
		188	# define EV_INLINE static
		189	#endif
		190
		191	/* EV_PROTOTYPES can be sued to switch of prototype declarations */
		192	#ifndef EV_PROTOTYPES
		193	# define EV_PROTOTYPES 1
		194	#endif
		195
		196	/*****************************************************************************/
		197
		198	#define EV_VERSION_MAJOR 4
		199	#define EV_VERSION_MINOR 0
		200
97	/* eventmask, revents, events... */	201	/* eventmask, revents, events... */
		202	enum {
98	#define EV_UNDEF -1L /* guaranteed to be invalid */	203	EV_UNDEF = -1, /* guaranteed to be invalid */
99	#define EV_NONE 0x00L /* no events */	204	EV_NONE = 0x00, /* no events */
100	#define EV_READ 0x01L /* ev_io detected read will not block */	205	EV_READ = 0x01, /* ev_io detected read will not block */
101	#define EV_WRITE 0x02L /* ev_io detected write will not block */	206	EV_WRITE = 0x02, /* ev_io detected write will not block */
102	#define EV_IOFDSET 0x80L /* internal use only */	207	EV__IOFDSET = 0x80, /* internal use only */
		208	EV_IO = EV_READ, /* alias for type-detection */
103	#define EV_TIMEOUT 0x00000100L /* timer timed out */	209	EV_TIMER = 0x00000100, /* timer timed out */
		210	#if EV_COMPAT3
		211	EV_TIMEOUT = EV_TIMER, /* pre 4.0 API compatibility */
		212	#endif
104	#define EV_PERIODIC 0x00000200L /* periodic timer timed out */	213	EV_PERIODIC = 0x00000200, /* periodic timer timed out */
105	#define EV_SIGNAL 0x00000400L /* signal was received */	214	EV_SIGNAL = 0x00000400, /* signal was received */
106	#define EV_CHILD 0x00000800L /* child/pid had status change */	215	EV_CHILD = 0x00000800, /* child/pid had status change */
107	#define EV_STAT 0x00001000L /* stat data changed */	216	EV_STAT = 0x00001000, /* stat data changed */
108	#define EV_IDLE 0x00002000L /* event loop is idling */	217	EV_IDLE = 0x00002000, /* event loop is idling */
109	#define EV_PREPARE 0x00004000L /* event loop about to poll */	218	EV_PREPARE = 0x00004000, /* event loop about to poll */
110	#define EV_CHECK 0x00008000L /* event loop finished poll */	219	EV_CHECK = 0x00008000, /* event loop finished poll */
111	#define EV_EMBED 0x00010000L /* embedded event loop needs sweep */	220	EV_EMBED = 0x00010000, /* embedded event loop needs sweep */
112	#define EV_FORK 0x00020000L /* event loop resumed in child */	221	EV_FORK = 0x00020000, /* event loop resumed in child */
		222	EV_ASYNC = 0x00040000, /* async intra-loop signal */
		223	EV_CUSTOM = 0x01000000, /* for use by user code */
113	#define EV_ERROR 0x80000000L /* sent when an error occurs */	224	EV_ERROR = 0x80000000 /* sent when an error occurs */
		225	};
114		226
115	/* can be used to add custom fields to all watchers, while losing binary compatibility */	227	/* can be used to add custom fields to all watchers, while losing binary compatibility */
116	#ifndef EV_COMMON	228	#ifndef EV_COMMON
117	# define EV_COMMON void *data;	229	# define EV_COMMON void *data;
118	#endif	230	#endif
119	#ifndef EV_PROTOTYPES
120	# define EV_PROTOTYPES 1
121	#endif
122
123	#define EV_VERSION_MAJOR 1
124	#define EV_VERSION_MINOR 0
125		231
126	#ifndef EV_CB_DECLARE	232	#ifndef EV_CB_DECLARE
127	# define EV_CB_DECLARE(type) void (cb)(EV_P_ struct type w, int revents);	233	# define EV_CB_DECLARE(type) void (cb)(EV_P_ struct type w, int revents);
128	#endif	234	#endif
129	#ifndef EV_CB_INVOKE	235	#ifndef EV_CB_INVOKE
130	# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))	236	# define EV_CB_INVOKE(watcher,revents) (watcher)->cb (EV_A_ (watcher), (revents))
131	#endif	237	#endif
132		238
		239	/* not official, do not use */
		240	#define EV_CB(type,name) void name (EV_P_ struct ev_ ## type *w, int revents)
		241
133	/*	242	/*
134	* struct member types:	243	* struct member types:
135	* private: you can look at them, but not change them, and they might not mean anything to you.	244	* private: you may look at them, but not change them,
		245	* and they might not mean anything to you.
136	* ro: can be read anytime, but only changed when the watcher isn't active	246	* ro: can be read anytime, but only changed when the watcher isn't active.
137	* rw: can be read and modified anytime, even when the watcher is active	247	* rw: can be read and modified anytime, even when the watcher is active.
		248	*
		249	* some internal details that might be helpful for debugging:
		250	*
		251	* active is either 0, which means the watcher is not active,
		252	* or the array index of the watcher (periodics, timers)
		253	* or the array index + 1 (most other watchers)
		254	* or simply 1 for watchers that aren't in some array.
		255	* pending is either 0, in which case the watcher isn't,
		256	* or the array index + 1 in the pendings array.
138	*/	257	*/
		258
		259	#if EV_MINPRI == EV_MAXPRI
		260	# define EV_DECL_PRIORITY
		261	#elif !defined (EV_DECL_PRIORITY)
		262	# define EV_DECL_PRIORITY int priority;
		263	#endif
139		264
140	/* shared by all watchers */	265	/* shared by all watchers */
141	#define EV_WATCHER(type) \	266	#define EV_WATCHER(type) \
142	int active; /* private */ \	267	int active; /* private */ \
143	int pending; /* private */ \	268	int pending; /* private */ \
144	int priority; /* private */ \	269	EV_DECL_PRIORITY /* private */ \
145	EV_COMMON /* rw */ \	270	EV_COMMON /* rw */ \
146	EV_CB_DECLARE (type) /* private */	271	EV_CB_DECLARE (type) /* private */
147		272
148	#define EV_WATCHER_LIST(type) \	273	#define EV_WATCHER_LIST(type) \
149	EV_WATCHER (type) \	274	EV_WATCHER (type) \
215	/* does not support priorities */	340	/* does not support priorities */
216	typedef struct ev_child	341	typedef struct ev_child
217	{	342	{
218	EV_WATCHER_LIST (ev_child)	343	EV_WATCHER_LIST (ev_child)
219		344
		345	int flags; /* private */
220	int pid; /* ro */	346	int pid; /* ro */
221	int rpid; /* rw, holds the received pid */	347	int rpid; /* rw, holds the received pid */
222	int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */	348	int rstatus; /* rw, holds the exit status, use the macros from sys/wait.h */
223	} ev_child;	349	} ev_child;
224		350
…		…
283	/* the callback gets invoked when the event loop has handled events, and can be 0 */	409	/* the callback gets invoked when the event loop has handled events, and can be 0 */
284	typedef struct ev_embed	410	typedef struct ev_embed
285	{	411	{
286	EV_WATCHER (ev_embed)	412	EV_WATCHER (ev_embed)
287		413
288	ev_io io; /* private */
289	struct ev_loop loop; / ro */	414	struct ev_loop other; / ro */
		415	ev_io io; /* private */
		416	ev_prepare prepare; /* private */
		417	ev_check check; /* unused */
		418	ev_timer timer; /* unused */
		419	ev_periodic periodic; /* unused */
		420	ev_idle idle; /* unused */
		421	ev_fork fork; /* private */
290	} ev_embed;	422	} ev_embed;
		423	#endif
		424
		425	#if EV_ASYNC_ENABLE
		426	/* invoked when somebody calls ev_async_send on the watcher */
		427	/* revent EV_ASYNC */
		428	typedef struct ev_async
		429	{
		430	EV_WATCHER (ev_async)
		431
		432	EV_ATOMIC_T sent; /* private */
		433	} ev_async;
		434
		435	# define ev_async_pending(w) (+(w)->sent)
291	#endif	436	#endif
292		437
293	/* the presence of this union forces similar struct layout */	438	/* the presence of this union forces similar struct layout */
294	union ev_any_watcher	439	union ev_any_watcher
295	{	440	{
…		…
313	struct ev_fork fork;	458	struct ev_fork fork;
314	#endif	459	#endif
315	#if EV_EMBED_ENABLE	460	#if EV_EMBED_ENABLE
316	struct ev_embed embed;	461	struct ev_embed embed;
317	#endif	462	#endif
		463	#if EV_ASYNC_ENABLE
		464	struct ev_async async;
		465	#endif
318	};	466	};
319		467
320	/* bits for ev_default_loop and ev_loop_new */	468	/* flag bits for ev_default_loop and ev_loop_new */
		469	enum {
321	/* the default */	470	/* the default */
322	#define EVFLAG_AUTO 0x00000000UL /* not quite a mask */	471	EVFLAG_AUTO = 0x00000000U, /* not quite a mask */
323	/* flag bits */	472	/* flag bits */
324	#define EVFLAG_NOENV 0x01000000UL /* do NOT consult environment */	473	EVFLAG_NOENV = 0x01000000U, /* do NOT consult environment */
325	#define EVFLAG_FORKCHECK 0x02000000UL /* check for a fork in each iteration */	474	EVFLAG_FORKCHECK = 0x02000000U, /* check for a fork in each iteration */
		475	/* debugging/feature disable */
		476	EVFLAG_NOINOTIFY = 0x00100000U, /* do not attempt to use inotify */
		477	#if EV_COMPAT3
		478	EVFLAG_NOSIGFD = 0, /* compatibility to pre-3.9 */
		479	#endif
		480	EVFLAG_SIGNALFD = 0x00200000U /* attempt to use signalfd */
		481	};
		482
326	/* method bits to be ored together */	483	/* method bits to be ored together */
		484	enum {
327	#define EVBACKEND_SELECT 0x00000001UL /* about anywhere */	485	EVBACKEND_SELECT = 0x00000001U, /* about anywhere */
328	#define EVBACKEND_POLL 0x00000002UL /* !win */	486	EVBACKEND_POLL = 0x00000002U, /* !win */
329	#define EVBACKEND_EPOLL 0x00000004UL /* linux */	487	EVBACKEND_EPOLL = 0x00000004U, /* linux */
330	#define EVBACKEND_KQUEUE 0x00000008UL /* bsd */	488	EVBACKEND_KQUEUE = 0x00000008U, /* bsd */
331	#define EVBACKEND_DEVPOLL 0x00000010UL /* solaris 8 / / NYI */	489	EVBACKEND_DEVPOLL = 0x00000010U, /* solaris 8 / / NYI */
332	#define EVBACKEND_PORT 0x00000020UL /* solaris 10 */	490	EVBACKEND_PORT = 0x00000020U, /* solaris 10 */
		491	EVBACKEND_ALL = 0x0000003FU
		492	};
333		493
334	#if EV_PROTOTYPES	494	#if EV_PROTOTYPES
335	int ev_version_major (void);	495	int ev_version_major (void);
336	int ev_version_minor (void);	496	int ev_version_minor (void);
337		497
338	unsigned int ev_supported_backends (void);	498	unsigned int ev_supported_backends (void);
339	unsigned int ev_recommended_backends (void);	499	unsigned int ev_recommended_backends (void);
340	unsigned int ev_embeddable_backends (void);	500	unsigned int ev_embeddable_backends (void);
341		501
342	ev_tstamp ev_time (void);	502	ev_tstamp ev_time (void);
		503	void ev_sleep (ev_tstamp delay); /* sleep for a while */
343		504
344	/* Sets the allocation function to use, works like realloc.	505	/* Sets the allocation function to use, works like realloc.
345	* It is used to allocate and free memory.	506	* It is used to allocate and free memory.
346	* If it returns zero when memory needs to be allocated, the library might abort	507	* If it returns zero when memory needs to be allocated, the library might abort
347	* or take some potentially destructive action.	508	* or take some potentially destructive action.
…		…
353	* retryable syscall error	514	* retryable syscall error
354	* (such as failed select, poll, epoll_wait)	515	* (such as failed select, poll, epoll_wait)
355	*/	516	*/
356	void ev_set_syserr_cb (void (cb)(const char msg));	517	void ev_set_syserr_cb (void (cb)(const char msg));
357		518
358	# if EV_MULTIPLICITY	519	#if EV_MULTIPLICITY
		520	EV_INLINE struct ev_loop *
		521	ev_default_loop_uc (void)
		522	{
		523	extern struct ev_loop *ev_default_loop_ptr;
		524
		525	return ev_default_loop_ptr;
		526	}
		527
359	/* the default loop is the only one that handles signals and child watchers */	528	/* the default loop is the only one that handles signals and child watchers */
360	/* you can call this as often as you like */	529	/* you can call this as often as you like */
361	static struct ev_loop *	530	EV_INLINE struct ev_loop *
362	ev_default_loop (unsigned int flags)	531	ev_default_loop (unsigned int flags EV_DEFARG (0))
363	{	532	{
364	extern struct ev_loop *ev_default_loop_ptr;	533	struct ev_loop *loop = ev_default_loop_uc ();
		534
		535	if (!loop)
		536	{
365	extern struct ev_loop *ev_default_loop_init (unsigned int flags);	537	extern struct ev_loop *ev_default_loop_init (unsigned int flags);
366		538
367	if (!ev_default_loop_ptr)
368	ev_default_loop_init (flags);	539	loop = ev_default_loop_init (flags);
		540	}
369		541
370	return ev_default_loop_ptr;	542	return loop;
371	}	543	}
372		544
373	/* create and destroy alternative loops that don't handle signals */	545	/* create and destroy alternative loops that don't handle signals */
374	struct ev_loop *ev_loop_new (unsigned int flags);	546	struct ev_loop *ev_loop_new (unsigned int flags EV_DEFARG (0));
375	void ev_loop_destroy (EV_P);	547	void ev_loop_destroy (EV_PDEF);
376	void ev_loop_fork (EV_P);	548	void ev_loop_fork (EV_PDEF);
377		549
378	ev_tstamp ev_now (EV_P); /* time w.r.t. timers and the eventloop, updated after each poll */	550	ev_tstamp ev_now (EV_PDEF); /* time w.r.t. timers and the eventloop, updated after each poll */
379		551
380	# else	552	#else
381		553
382	int ev_default_loop (unsigned int flags); /* returns true when successful */	554	int ev_default_loop (unsigned int flags EV_DEFARG (0)); /* returns true when successful */
383		555
384	static ev_tstamp	556	EV_INLINE ev_tstamp
385	ev_now (void)	557	ev_now (void)
386	{	558	{
387	extern ev_tstamp ev_rt_now;	559	extern ev_tstamp ev_rt_now;
388		560
389	return ev_rt_now;	561	return ev_rt_now;
390	}	562	}
		563	#endif /* multiplicity */
		564
		565	EV_INLINE int
		566	ev_is_default_loop (EV_PDEF)
		567	{
		568	#if EV_MULTIPLICITY
		569	extern struct ev_loop *ev_default_loop_ptr;
		570
		571	return !!(EV_A == ev_default_loop_ptr);
		572	#else
		573	return 1;
391	# endif	574	#endif
		575	}
392		576
393	void ev_default_destroy (void); /* destroy the default loop */	577	void ev_default_destroy (void); /* destroy the default loop */
394	/* this needs to be called after fork, to duplicate the default loop */	578	/* this needs to be called after fork, to duplicate the default loop */
395	/* if you create alternative loops you have to call ev_loop_fork on them */	579	/* if you create alternative loops you have to call ev_loop_fork on them */
396	/* you can call it in either the parent or the child */	580	/* you can call it in either the parent or the child */
397	/* you can actually call it at any time, anywhere :) */	581	/* you can actually call it at any time, anywhere :) */
398	void ev_default_fork (void);	582	void ev_default_fork (void);
399		583
400	unsigned int ev_backend (EV_P);	584	unsigned int ev_backend (EV_PDEF); /* backend in use by loop */
401	unsigned int ev_loop_count (EV_P);
402	#endif
403		585
404	#define EVLOOP_NONBLOCK 1 /* do not block/wait */	586	void ev_now_update (EV_PDEF); /* update event loop time */
405	#define EVLOOP_ONESHOT 2 /* block once only */	587
406	#define EVUNLOOP_CANCEL 0 /* undo unloop */	588	#if EV_WALK_ENABLE
407	#define EVUNLOOP_ONE 1 /* unloop once */	589	/* walk (almost) all watchers in the loop of a given type, invoking the */
		590	/* callback on every such watcher. The callback might stop the watcher, */
		591	/* but do nothing else with the loop */
		592	void ev_walk (EV_P_ int types, void (cb)(EV_P_ int type, void w));
		593	#endif
		594
		595	#endif /* prototypes */
		596
		597	/* ev_run flags values */
		598	enum {
		599	EVRUN_NOWAIT = 1, /* do not block/wait */
		600	EVRUN_ONCE = 2 /* block once only */
		601	};
		602
		603	/* ev_break how values */
		604	enum {
		605	EVBREAK_CANCEL = 0, /* undo unloop */
		606	EVBREAK_ONE = 1, /* unloop once */
408	#define EVUNLOOP_ALL 2 /* unloop all loops */	607	EVBREAK_ALL = 2 /* unloop all loops */
		608	};
409		609
410	#if EV_PROTOTYPES	610	#if EV_PROTOTYPES
411	void ev_loop (EV_P_ int flags);	611	void ev_run (EV_PDEF_ int flags EV_DEFARG (0));
412	void ev_unloop (EV_P_ int how); /* set to 1 to break out of event loop, set to 2 to break out of all event loops */	612	void ev_break (EV_PDEF_ int how EV_DEFARG (EVBREAK_ONE)); /* break out of the loop */
413		613
414	/*	614	/*
415	* ref/unref can be used to add or remove a refcount on the mainloop. every watcher	615	* ref/unref can be used to add or remove a refcount on the mainloop. every watcher
416	* keeps one reference. if you have a long-runing watcher you never unregister that	616	* keeps one reference. if you have a long-running watcher you never unregister that
417	* should not keep ev_loop from running, unref() after starting, and ref() before stopping.	617	* should not keep ev_loop from running, unref() after starting, and ref() before stopping.
418	*/	618	*/
419	void ev_ref (EV_P);	619	void ev_ref (EV_PDEF);
420	void ev_unref (EV_P);	620	void ev_unref (EV_PDEF);
421		621
		622	/*
422	/* convinience function, wait for a single event, without registering an event watcher */	623	* convenience function, wait for a single event, without registering an event watcher
423	/* if timeout is < 0, do wait indefinitely */	624	* if timeout is < 0, do wait indefinitely
		625	*/
424	void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg);	626	void ev_once (EV_P_ int fd, int events, ev_tstamp timeout, void (cb)(int revents, void arg), void *arg);
		627
		628	# if EV_FEATURE_API
		629	unsigned int ev_iteration (EV_PDEF); /* number of loop iterations */
		630	unsigned int ev_depth (EV_PDEF); /* #ev_loop enters - #ev_loop leaves */
		631	void ev_verify (EV_PDEF); /* abort if loop data corrupted */
		632
		633	void ev_set_io_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
		634	void ev_set_timeout_collect_interval (EV_P_ ev_tstamp interval); /* sleep at least this time, default 0 */
		635
		636	/* advanced stuff for threading etc. support, see docs */
		637	void ev_set_userdata (EV_P_ void *data);
		638	void *ev_userdata (EV_PDEF);
		639	void ev_set_invoke_pending_cb (EV_P_ void (*invoke_pending_cb)(EV_P));
		640	void ev_set_loop_release_cb (EV_P_ void (release)(EV_P), void (acquire)(EV_P));
		641
		642	unsigned int ev_pending_count (EV_PDEF); /* number of pending events, if any */
		643	void ev_invoke_pending (EV_PDEF); /* invoke all pending watchers */
		644
		645	/*
		646	* stop/start the timer handling.
		647	*/
		648	void ev_suspend (EV_PDEF);
		649	void ev_resume (EV_PDEF);
		650	#endif
		651
425	#endif	652	#endif
426		653
427	/* these may evaluate ev multiple times, and the other arguments at most once */	654	/* these may evaluate ev multiple times, and the other arguments at most once */
428	/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */	655	/* either use ev_init + ev_TYPE_set, or the ev_TYPE_init macro, below, to first initialise a watcher */
429	#define ev_init(ev,cb_) do { \	656	#define ev_init(ev,cb_) do { \
430	((ev_watcher )(void )(ev))->active = \	657	((ev_watcher )(void )(ev))->active = \
431	((ev_watcher )(void )(ev))->pending = \	658	((ev_watcher )(void )(ev))->pending = 0; \
432	((ev_watcher )(void )(ev))->priority = 0; \	659	ev_set_priority ((ev), 0); \
433	ev_set_cb ((ev), cb_); \	660	ev_set_cb ((ev), cb_); \
434	} while (0)	661	} while (0)
435		662
436	#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) \| EV_IOFDSET; } while (0)	663	#define ev_io_set(ev,fd_,events_) do { (ev)->fd = (fd_); (ev)->events = (events_) \| EV__IOFDSET; } while (0)
437	#define ev_timer_set(ev,after_,repeat_) do { (ev)->at = (after_); (ev)->repeat = (repeat_); } while (0)	664	#define ev_timer_set(ev,after_,repeat_) do { ((ev_watcher_time *)(ev))->at = (after_); (ev)->repeat = (repeat_); } while (0)
438	#define ev_periodic_set(ev,ofs_,ival_,res_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb= (res_); } while (0)	665	#define ev_periodic_set(ev,ofs_,ival_,rcb_) do { (ev)->offset = (ofs_); (ev)->interval = (ival_); (ev)->reschedule_cb = (rcb_); } while (0)
439	#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)	666	#define ev_signal_set(ev,signum_) do { (ev)->signum = (signum_); } while (0)
440	#define ev_child_set(ev,pid_) do { (ev)->pid = (pid_); } while (0)	667	#define ev_child_set(ev,pid_,trace_) do { (ev)->pid = (pid_); (ev)->flags = !!(trace_); } while (0)
441	#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)	668	#define ev_stat_set(ev,path_,interval_) do { (ev)->path = (path_); (ev)->interval = (interval_); (ev)->wd = -2; } while (0)
442	#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */	669	#define ev_idle_set(ev) /* nop, yes, this is a serious in-joke */
443	#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */	670	#define ev_prepare_set(ev) /* nop, yes, this is a serious in-joke */
444	#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */	671	#define ev_check_set(ev) /* nop, yes, this is a serious in-joke */
445	#define ev_embed_set(ev,loop_) do { (ev)->loop = (loop_); } while (0)	672	#define ev_embed_set(ev,other_) do { (ev)->other = (other_); } while (0)
446	#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */	673	#define ev_fork_set(ev) /* nop, yes, this is a serious in-joke */
		674	#define ev_async_set(ev) /* nop, yes, this is a serious in-joke */
447		675
448	#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)	676	#define ev_io_init(ev,cb,fd,events) do { ev_init ((ev), (cb)); ev_io_set ((ev),(fd),(events)); } while (0)
449	#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)	677	#define ev_timer_init(ev,cb,after,repeat) do { ev_init ((ev), (cb)); ev_timer_set ((ev),(after),(repeat)); } while (0)
450	#define ev_periodic_init(ev,cb,at,ival,res) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(at),(ival),(res)); } while (0)	678	#define ev_periodic_init(ev,cb,ofs,ival,rcb) do { ev_init ((ev), (cb)); ev_periodic_set ((ev),(ofs),(ival),(rcb)); } while (0)
451	#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)	679	#define ev_signal_init(ev,cb,signum) do { ev_init ((ev), (cb)); ev_signal_set ((ev), (signum)); } while (0)
452	#define ev_child_init(ev,cb,pid) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid)); } while (0)	680	#define ev_child_init(ev,cb,pid,trace) do { ev_init ((ev), (cb)); ev_child_set ((ev),(pid),(trace)); } while (0)
453	#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_path_set ((ev),(path),(interval)); } while (0)	681	#define ev_stat_init(ev,cb,path,interval) do { ev_init ((ev), (cb)); ev_stat_set ((ev),(path),(interval)); } while (0)
454	#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)	682	#define ev_idle_init(ev,cb) do { ev_init ((ev), (cb)); ev_idle_set ((ev)); } while (0)
455	#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)	683	#define ev_prepare_init(ev,cb) do { ev_init ((ev), (cb)); ev_prepare_set ((ev)); } while (0)
456	#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)	684	#define ev_check_init(ev,cb) do { ev_init ((ev), (cb)); ev_check_set ((ev)); } while (0)
457	#define ev_embed_init(ev,cb,loop) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(loop)); } while (0)	685	#define ev_embed_init(ev,cb,other) do { ev_init ((ev), (cb)); ev_embed_set ((ev),(other)); } while (0)
458	#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)	686	#define ev_fork_init(ev,cb) do { ev_init ((ev), (cb)); ev_fork_set ((ev)); } while (0)
		687	#define ev_async_init(ev,cb) do { ev_init ((ev), (cb)); ev_async_set ((ev)); } while (0)
459		688
460	#define ev_is_pending(ev) (0 + ((ev_watcher )(void )(ev))->pending) /* ro, true when watcher is waiting for callback invocation */	689	#define ev_is_pending(ev) (0 + ((ev_watcher )(void )(ev))->pending) /* ro, true when watcher is waiting for callback invocation */
461	#define ev_is_active(ev) (0 + ((ev_watcher )(void )(ev))->active) /* ro, true when the watcher has been started */	690	#define ev_is_active(ev) (0 + ((ev_watcher )(void )(ev))->active) /* ro, true when the watcher has been started */
462		691
463	#define ev_priority(ev) ((((ev_watcher )(void )(ev))->priority) + 0)
464	#define ev_cb(ev) (ev)->cb /* rw */	692	#define ev_cb(ev) (ev)->cb /* rw */
		693
		694	#if EV_MINPRI == EV_MAXPRI
		695	# define ev_priority(ev) ((ev), EV_MINPRI)
		696	# define ev_set_priority(ev,pri) ((ev), (pri))
		697	#else
		698	# define ev_priority(ev) (+(((ev_watcher )(void )(ev))->priority))
465	#define ev_set_priority(ev,pri) ((ev_watcher )(void )(ev))->priority = (pri)	699	# define ev_set_priority(ev,pri) ( (ev_watcher )(void )(ev))->priority = (pri)
		700	#endif
		701
		702	#define ev_periodic_at(ev) (+((ev_watcher_time *)(ev))->at)
466		703
467	#ifndef ev_set_cb	704	#ifndef ev_set_cb
468	# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)	705	# define ev_set_cb(ev,cb_) ev_cb (ev) = (cb_)
469	#endif	706	#endif
470		707
471	/* stopping (enabling, adding) a watcher does nothing if it is already running */	708	/* stopping (enabling, adding) a watcher does nothing if it is already running */
472	/* stopping (disabling, deleting) a watcher does nothing unless its already running */	709	/* stopping (disabling, deleting) a watcher does nothing unless its already running */
473	#if EV_PROTOTYPES	710	#if EV_PROTOTYPES
474		711
475	/* feeds an event into a watcher as if the event actually occured */	712	/* feeds an event into a watcher as if the event actually occured */
476	/* accepts any ev_watcher type */	713	/* accepts any ev_watcher type */
477	void ev_feed_event (EV_P_ void *w, int revents);	714	void ev_feed_event (EV_P_ void *w, int revents);
478	void ev_feed_fd_event (EV_P_ int fd, int revents);	715	void ev_feed_fd_event (EV_P_ int fd, int revents);
		716	#if EV_SIGNAL_ENABLE
479	void ev_feed_signal_event (EV_P_ int signum);	717	void ev_feed_signal_event (EV_P_ int signum);
		718	#endif
480	void ev_invoke (EV_P_ void *w, int revents);	719	void ev_invoke (EV_P_ void *w, int revents);
481	int ev_clear_pending (EV_P_ void *w);	720	int ev_clear_pending (EV_P_ void *w);
482		721
483	void ev_io_start (EV_P_ ev_io *w);	722	void ev_io_start (EV_P_ ev_io *w);
484	void ev_io_stop (EV_P_ ev_io *w);	723	void ev_io_stop (EV_P_ ev_io *w);
485		724
486	void ev_timer_start (EV_P_ ev_timer *w);	725	void ev_timer_start (EV_P_ ev_timer *w);
487	void ev_timer_stop (EV_P_ ev_timer *w);	726	void ev_timer_stop (EV_P_ ev_timer *w);
488	/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */	727	/* stops if active and no repeat, restarts if active and repeating, starts if inactive and repeating */
489	void ev_timer_again (EV_P_ ev_timer *w);	728	void ev_timer_again (EV_P_ ev_timer *w);
		729	/* return remaining time */
		730	ev_tstamp ev_timer_remaining (EV_P_ ev_timer *w);
490		731
491	#if EV_PERIODIC_ENABLE	732	#if EV_PERIODIC_ENABLE
492	void ev_periodic_start (EV_P_ ev_periodic *w);	733	void ev_periodic_start (EV_P_ ev_periodic *w);
493	void ev_periodic_stop (EV_P_ ev_periodic *w);	734	void ev_periodic_stop (EV_P_ ev_periodic *w);
494	void ev_periodic_again (EV_P_ ev_periodic *w);	735	void ev_periodic_again (EV_P_ ev_periodic *w);
495	#endif	736	#endif
496		737
497	/* only supported in the default loop */	738	/* only supported in the default loop */
		739	#if EV_SIGNAL_ENABLE
498	void ev_signal_start (EV_P_ ev_signal *w);	740	void ev_signal_start (EV_P_ ev_signal *w);
499	void ev_signal_stop (EV_P_ ev_signal *w);	741	void ev_signal_stop (EV_P_ ev_signal *w);
		742	#endif
500		743
501	/* only supported in the default loop */	744	/* only supported in the default loop */
		745	# if EV_CHILD_ENABLE
502	void ev_child_start (EV_P_ ev_child *w);	746	void ev_child_start (EV_P_ ev_child *w);
503	void ev_child_stop (EV_P_ ev_child *w);	747	void ev_child_stop (EV_P_ ev_child *w);
		748	# endif
504		749
505	# if EV_STAT_ENABLE	750	# if EV_STAT_ENABLE
506	void ev_stat_start (EV_P_ ev_stat *w);	751	void ev_stat_start (EV_P_ ev_stat *w);
507	void ev_stat_stop (EV_P_ ev_stat *w);	752	void ev_stat_stop (EV_P_ ev_stat *w);
508	void ev_stat_stat (EV_P_ ev_stat *w);	753	void ev_stat_stat (EV_P_ ev_stat *w);
…		…
511	# if EV_IDLE_ENABLE	756	# if EV_IDLE_ENABLE
512	void ev_idle_start (EV_P_ ev_idle *w);	757	void ev_idle_start (EV_P_ ev_idle *w);
513	void ev_idle_stop (EV_P_ ev_idle *w);	758	void ev_idle_stop (EV_P_ ev_idle *w);
514	# endif	759	# endif
515		760
		761	#if EV_PREPARE_ENABLE
516	void ev_prepare_start (EV_P_ ev_prepare *w);	762	void ev_prepare_start (EV_P_ ev_prepare *w);
517	void ev_prepare_stop (EV_P_ ev_prepare *w);	763	void ev_prepare_stop (EV_P_ ev_prepare *w);
		764	#endif
518		765
		766	#if EV_CHECK_ENABLE
519	void ev_check_start (EV_P_ ev_check *w);	767	void ev_check_start (EV_P_ ev_check *w);
520	void ev_check_stop (EV_P_ ev_check *w);	768	void ev_check_stop (EV_P_ ev_check *w);
		769	#endif
521		770
522	# if EV_FORK_ENABLE	771	# if EV_FORK_ENABLE
523	void ev_fork_start (EV_P_ ev_fork *w);	772	void ev_fork_start (EV_P_ ev_fork *w);
524	void ev_fork_stop (EV_P_ ev_fork *w);	773	void ev_fork_stop (EV_P_ ev_fork *w);
525	# endif	774	# endif
…		…
529	void ev_embed_start (EV_P_ ev_embed *w);	778	void ev_embed_start (EV_P_ ev_embed *w);
530	void ev_embed_stop (EV_P_ ev_embed *w);	779	void ev_embed_stop (EV_P_ ev_embed *w);
531	void ev_embed_sweep (EV_P_ ev_embed *w);	780	void ev_embed_sweep (EV_P_ ev_embed *w);
532	# endif	781	# endif
533		782
		783	# if EV_ASYNC_ENABLE
		784	void ev_async_start (EV_P_ ev_async *w);
		785	void ev_async_stop (EV_P_ ev_async *w);
		786	void ev_async_send (EV_P_ ev_async *w);
		787	# endif
		788
		789	#if EV_COMPAT3
		790	#define EVLOOP_NONBLOCK EVRUN_NOWAIT
		791	#define EVLOOP_ONESHOT EVRUN_ONCE
		792	#define EVUNLOOP_CANCEL EVBREAK_CANCEL
		793	#define EVUNLOOP_ONE EVBREAK_ONE
		794	#define EVUNLOOP_ALL EVBREAK_ALL
		795	#if EV_PROTOTYPES
		796	EV_INLINE void ev_loop (EV_P_ int flags) { ev_run (EV_A_ flags); }
		797	EV_INLINE void ev_unloop (EV_P_ int how ) { ev_break (EV_A_ how ); }
		798	#if EV_FEATURE_API
		799	EV_INLINE void ev_loop_count (EV_P) { ev_iteration (EV_A); }
		800	EV_INLINE void ev_loop_depth (EV_P) { ev_depth (EV_A); }
		801	EV_INLINE void ev_loop_verify (EV_P) { ev_verify (EV_A); }
		802	#endif
		803	#endif
		804	#else
		805	typedef struct ev_loop ev_loop;
		806	#endif
		807
534	#endif	808	#endif
535		809
536	#ifdef __cplusplus	810	#ifdef __cplusplus
537	}	811	}
538	#endif	812	#endif

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Comparing libev/ev.h (file contents): Revision 1.85 by root, Fri Dec 14 21:07:13 2007 UTC vs. Revision 1.146 by root, Fri Oct 22 06:14:28 2010 UTC

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Comparing libev/ev.h (file contents):
Revision 1.85 by root, Fri Dec 14 21:07:13 2007 UTC vs.
Revision 1.146 by root, Fri Oct 22 06:14:28 2010 UTC