/*
* 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
* 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) 1991-2001 by Sun Microsystems, Inc.
* All rights reserved.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* zfree - use munmap(2) to unmap (free) memory.
*
* These functions should be better than malloc(3) for large memory allocation.
*/
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <zmalloc.h>
/*
* a utility structure to keep track of the (possibly) multiple mmaps
* that we have done...
*/
struct buffer_map {
char *bm_buffer;
int bm_size;
};
static struct buffer_map *
{
return (bm_list);
}
static size_t
{
else
return (size);
}
}
return (0);
}
void *
{
int fd;
/* XXX - Special case: never allocate 0 bytes, use a special buffer */
if (size == 0)
return ((void *)NULL); /* return (bm_empty); */
return ((void *) NULL);
}
perror("zmalloc: mmap");
return ((void *) NULL);
}
return ((void *) mbuf);
}
void
{
return;
perror("zfree: munmap");
}
}
}