netinfo.subproj/mm.h

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
   7  * Reserved.  This file contains Original Code and/or Modifications of
   8  * Original Code as defined in and that are subject to the Apple Public
   9  * Source License Version 1.1 (the "License").  You may not use this file
  10  * except in compliance with the License.  Please obtain a copy of the
  11  * License at http://www.apple.com/publicsource and read it before using
  12  * this file.
  13  *
  14  * The Original Code and all software distributed under the License are
  15  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  16  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  17  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT.  Please see the
  19  * License for the specific language governing rights and limitations
  20  * under the License.
  21  *
  22  * @APPLE_LICENSE_HEADER_END@
  23  */
  24 /*
  25  * Useful memory managment macros
  26  * Copyright (C) 1989 by NeXT, Inc.
  27  */
  28 #define  mm_used() mstats()
  29
  30 #define MM_ALLOC(obj) obj = ((void *)malloc(sizeof(*(obj))))
  31
  32 #define MM_FREE(obj)  free((void *)(obj))
  33
  34 #define MM_ZERO(obj)  bzero((void *)(obj), sizeof(*(obj)))
  35
  36 #define MM_BCOPY(b1, b2, size) bcopy((void *)(b1), (void *)(b2), \
  37                                      (unsigned)(size))
  38
  39 #define MM_BEQ(b1, b2, size) (bcmp((void *)(b1), (void *)(b2), \
  40                                    (unsigned)(size)) == 0)
  41
  42 #define MM_ALLOC_ARRAY(obj, len)  \
  43         obj = ((void *)malloc(sizeof(*(obj)) * (len)))
  44
  45 #define MM_ZERO_ARRAY(obj, len) bzero((void *)(obj), sizeof(*obj) * len)
  46
  47 #define MM_FREE_ARRAY(obj, len) free((void *)(obj))
  48
  49 #define MM_GROW_ARRAY(obj, len) \
  50         ((obj == NULL) ? (MM_ALLOC_ARRAY((obj), (len) + 1)) : \
  51          (obj = (void *)realloc((void *)(obj), \
  52                                 sizeof(*(obj)) * ((len) + 1))))
  53
  54 #define MM_SHRINK_ARRAY(obj, len) \
  55         obj = (void *)realloc((void *)(obj), \
  56                               sizeof(*(obj)) * ((len) - 1))
  57