usr.sbin/user/defs.h

   1 /* $NetBSD: defs.h,v 1.6 2005/11/25 08:00:18 agc Exp $ */
   2
   3 /*
   4  * Copyright (c) 1999 Alistair G. Crooks.  All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote
  15  *    products derived from this software without specific prior written
  16  *    permission.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
  19  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
  20  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
  22  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  24  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  25  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
  26  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  27  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29  */
  30 #ifndef DEFS_H_
  31 #define DEFS_H_
  32
  33 #define NEWARRAY(type,ptr,size,action) do {                             \
  34         if ((ptr = (type *) calloc(sizeof(type), size)) == (type *) NULL) { \
  35                 warn("can't allocate %ld bytes", (long)(size * sizeof(type))); \
  36                 action;                                                 \
  37         }                                                               \
  38 } while( /* CONSTCOND */ 0)
  39
  40 #define RENEW(type,ptr,size,action) do {                                \
  41         if ((ptr = (type *) realloc(ptr, sizeof(type) * size)) == (type *) NULL) { \
  42                 warn("can't realloc %ld bytes", (long)(size * sizeof(type))); \
  43                 action;                                                 \
  44         }                                                               \
  45 } while( /* CONSTCOND */ 0)
  46
  47 #define NEW(type, ptr, action)  NEWARRAY(type, ptr, 1, action)
  48
  49 #define FREE(ptr)       (void) free(ptr)
  50
  51 #ifndef MIN
  52 #define MIN(a,b)        (((a) < (b)) ? (a) : (b))
  53 #endif
  54
  55 #ifndef MAX
  56 #define MAX(a,b)        (((a) > (b)) ? (a) : (b))
  57 #endif
  58
  59 #endif /* !DEFS_H_ */