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1 | /* $Id: vmbuf.h,v 1.3 2004/06/11 16:00:17 ludvigm Exp $ */ |
2 | ||
3 | /* | |
4 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
15 | * 3. Neither the name of the project nor the names of its contributors | |
16 | * may be used to endorse or promote products derived from this software | |
17 | * without specific prior written permission. | |
18 | * | |
19 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND | |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE | |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
29 | * SUCH DAMAGE. | |
30 | */ | |
31 | ||
32 | #ifndef _VMBUF_H | |
33 | #define _VMBUF_H | |
34 | ||
35 | #include <sys/types.h> | |
36 | ||
37 | /* | |
38 | * bp v | |
39 | * v v | |
40 | * ........................ | |
41 | * <--------------> l | |
42 | * <----------------------> bl | |
43 | */ | |
44 | typedef struct _vchar_t_ { | |
45 | #if notyet | |
46 | u_int32_t t; /* type of the value */ | |
47 | vchar_t *n; /* next vchar_t buffer */ | |
48 | size_t bl; /* length of the buffer */ | |
49 | caddr_t bp; /* pointer to the buffer */ | |
50 | #endif | |
51 | size_t l; /* length of the value */ | |
52 | caddr_t v; /* place holder to the pointer to the value */ | |
53 | } vchar_t; | |
54 | ||
55 | #define VPTRINIT(p) \ | |
56 | do { \ | |
57 | if (p) { \ | |
58 | vfree(p); \ | |
59 | (p) = NULL; \ | |
60 | } \ | |
61 | } while(0); | |
62 | ||
63 | extern vchar_t *vmalloc __P((size_t)); | |
64 | extern vchar_t *vrealloc __P((vchar_t *, size_t)); | |
65 | extern void vfree __P((vchar_t *)); | |
66 | extern vchar_t *vdup __P((vchar_t *)); | |
67 | ||
68 | #endif /* _VMBUF_H */ |