xref: /titanic_53/usr/src/head/malloc.h (revision 7c478bd95313f5f23a4c958a745db2134aa03244)

/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*	Copyright (c) 1988 AT&T	*/
/*	  All Rights Reserved  	*/


#ifndef _MALLOC_H
#define	_MALLOC_H

#pragma ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.7	*/

#include <sys/types.h>

#ifdef	__cplusplus
extern "C" {
#endif

/*
 *	Constants defining mallopt operations
 */
#define	M_MXFAST	1	/* set size of blocks to be fast */
#define	M_NLBLKS	2	/* set number of block in a holding block */
#define	M_GRAIN		3	/* set number of sizes mapped to one, for */
				/* small blocks */
#define	M_KEEP		4	/* retain contents of block after a free */
				/* until another allocation */
/*
 *	structure filled by
 */
struct mallinfo  {
	unsigned long arena;	/* total space in arena */
	unsigned long ordblks;	/* number of ordinary blocks */
	unsigned long smblks;	/* number of small blocks */
	unsigned long hblks;	/* number of holding blocks */
	unsigned long hblkhd;	/* space in holding block headers */
	unsigned long usmblks;	/* space in small blocks in use */
	unsigned long fsmblks;	/* space in free small blocks */
	unsigned long uordblks;	/* space in ordinary blocks in use */
	unsigned long fordblks;	/* space in free ordinary blocks */
	unsigned long keepcost;	/* cost of enabling keep option */
};

#if defined(__STDC__)

void *malloc(size_t);
void free(void *);
void *realloc(void *, size_t);
int mallopt(int, int);
struct mallinfo mallinfo(void);
void *calloc(size_t, size_t);

#else

void *malloc();
void free();
void *realloc();
int mallopt();
struct mallinfo mallinfo();
void *calloc();

#endif	/* __STDC__ */

#ifdef	__cplusplus
}
#endif

#endif	/* _MALLOC_H */