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      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) 1988 AT&T */
     28 /*        All Rights Reserved   */
     29 
     30 #pragma ident	"%Z%%M%	%I%	%E% SMI"
     31 
     32 
     33 #ifndef	__malloc_h
     34 #define	__malloc_h
     35 
     36 /*
     37  *	Constants defining mallopt operations
     38  */
     39 #define	M_MXFAST	1	/* set size of 'small blocks' */
     40 #define	M_NLBLKS	2	/* set num of small blocks in holding block */
     41 #define	M_GRAIN		3	/* set rounding factor for small blocks */
     42 #define	M_KEEP		4	/* (nop) retain contents of freed blocks */
     43 
     44 /*
     45  *	malloc information structure
     46  */
     47 struct	mallinfo  {
     48 	int arena;	/* total space in arena */
     49 	int ordblks;	/* number of ordinary blocks */
     50 	int smblks;	/* number of small blocks */
     51 	int hblks;	/* number of holding blocks */
     52 	int hblkhd;	/* space in holding block headers */
     53 	int usmblks;	/* space in small blocks in use */
     54 	int fsmblks;	/* space in free small blocks */
     55 	int uordblks;	/* space in ordinary blocks in use */
     56 	int fordblks;	/* space in free ordinary blocks */
     57 	int keepcost;	/* cost of enabling keep option */
     58 
     59 	int mxfast;	/* max size of small blocks */
     60 	int nlblks;	/* number of small blocks in a holding block */
     61 	int grain;	/* small block rounding factor */
     62 	int uordbytes;	/* space (including overhead) allocated in ord. blks */
     63 	int allocated;	/* number of ordinary blocks allocated */
     64 	int treeoverhead;	/* bytes used in maintaining the free tree */
     65 };
     66 
     67 typedef	void *	malloc_t;
     68 
     69 extern	malloc_t	calloc(/* size_t nmemb, size_t size */);
     70 extern	void		free(/* malloc_t ptr */);
     71 extern	malloc_t	malloc(/* size_t size */);
     72 extern	malloc_t	realloc(/* malloc_t ptr, size_t size */);
     73 extern	int		mallopt();
     74 extern	struct mallinfo	mallinfo();
     75 
     76 #endif	/* !__malloc_h */
     77