1 /* $NetBSD: vmbuf.h,v 1.4 2006/09/09 16:22:10 manu Exp $ */ 2 3 /* Id: vmbuf.h,v 1.4 2005/10/30 10:28:44 vanhu Exp */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef _VMBUF_H 35 #define _VMBUF_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 #if defined(__APPLE__) && defined(__MACH__) 64 /* vfree is already defined in Apple's system libraries */ 65 #define vfree vmbuf_free 66 #endif 67 68 extern vchar_t *vmalloc __P((size_t)); 69 extern vchar_t *vrealloc __P((vchar_t *, size_t)); 70 extern void vfree __P((vchar_t *)); 71 extern vchar_t *vdup __P((vchar_t *)); 72 73 #endif /* _VMBUF_H */ 74