1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
/*
* Copyright (C) 2004, 2007 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 1999-2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/* $Id: once.h,v 1.9 2007/06/19 23:47:20 tbox Exp $ */
#ifndef ISC_ONCE_H
#define ISC_ONCE_H 1
#include <isc/lang.h>
#include <isc/result.h>
ISC_LANG_BEGINDECLS
typedef struct {
int status;
int counter;
} isc_once_t;
#define ISC_ONCE_INIT_NEEDED 0
#define ISC_ONCE_INIT_DONE 1
#define ISC_ONCE_INIT { ISC_ONCE_INIT_NEEDED, 1 }
isc_result_t
isc_once_do(isc_once_t *controller, void(*function)(void));
ISC_LANG_ENDDECLS
#endif /* ISC_ONCE_H */
|
