racoon.tproj/vmbuf.h

   1 /*      $KAME: vmbuf.h,v 1.8 2001/12/12 21:18:33 sakane 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 /*
  36  *      bp      v
  37  *      v       v
  38  *      ........................
  39  *              <--------------> l
  40  *      <----------------------> bl
  41  */
  42 typedef struct _vchar_t_ {
  43 #if notyet
  44         u_int32_t t;    /* type of the value */
  45         vchar_t *n;     /* next vchar_t buffer */
  46         size_t bl;      /* length of the buffer */
  47         caddr_t bp;     /* pointer to the buffer */
  48 #endif
  49         size_t l;       /* length of the value */
  50         caddr_t v;      /* place holder to the pointer to the value */
  51 } vchar_t;
  52
  53 #define VPTRINIT(p) \
  54 do { \
  55         if (p) { \
  56                 vfree(p); \
  57                 (p) = NULL; \
  58         } \
  59 } while(0);
  60
  61 #define vfree   vmbuf_free
  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
  69 #endif /* __VMBUF_H__ */
  70