usr/src/lib/libbc/inc/include/malloc.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1989 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #ifndef __malloc_h
  33 #define __malloc_h
  34
  35 /*
  36  *      Constants defining mallopt operations
  37  */
  38 #define M_MXFAST        1       /* set size of 'small blocks' */
  39 #define M_NLBLKS        2       /* set num of small blocks in holding block */
  40 #define M_GRAIN         3       /* set rounding factor for small blocks */
  41 #define M_KEEP          4       /* (nop) retain contents of freed blocks */
  42
  43 /*
  44  *      malloc information structure
  45  */
  46 struct  mallinfo  {
  47         int arena;      /* total space in arena */
  48         int ordblks;    /* number of ordinary blocks */
  49         int smblks;     /* number of small blocks */
  50         int hblks;      /* number of holding blocks */
  51         int hblkhd;     /* space in holding block headers */
  52         int usmblks;    /* space in small blocks in use */
  53         int fsmblks;    /* space in free small blocks */
  54         int uordblks;   /* space in ordinary blocks in use */
  55         int fordblks;   /* space in free ordinary blocks */
  56         int keepcost;   /* cost of enabling keep option */
  57
  58         int mxfast;     /* max size of small blocks */
  59         int nlblks;     /* number of small blocks in a holding block */
  60         int grain;      /* small block rounding factor */
  61         int uordbytes;  /* space (including overhead) allocated in ord. blks */
  62         int allocated;  /* number of ordinary blocks allocated */
  63         int treeoverhead;       /* bytes used in maintaining the free tree */
  64 };
  65
  66 typedef char *  malloc_t;
  67
  68 extern  malloc_t        calloc(/* size_t nmemb, size_t size */);
  69 extern  int             free(/* malloc_t ptr */);
  70 extern  malloc_t        malloc(/* size_t size */);
  71 extern  malloc_t        realloc(/* malloc_t ptr, size_t size */);
  72 extern  int             mallopt();
  73 extern  struct mallinfo mallinfo();
  74
  75 #endif  /* !__malloc_h */