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/*
* 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 2005 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* #pragma ident "@(#)vmem_base.c 1.6 05/06/08 SMI" */
/* #include "mtlib.h" */
#include "config.h"
#include "vmem_base.h"
#include "umem_base.h"
uint_t vmem_backend = 0;
vmem_t *
vmem_heap_arena(vmem_alloc_t **allocp, vmem_free_t **freep)
{
static mutex_t arena_mutex = DEFAULTMUTEX;
/*
* Allow the init thread through, block others until the init completes
*/
if (umem_ready != UMEM_READY && umem_init_thr != thr_self() &&
umem_init() == 0)
return (NULL);
(void) mutex_lock(&arena_mutex);
if (vmem_heap == NULL)
vmem_heap_init();
(void) mutex_unlock(&arena_mutex);
if (allocp != NULL)
*allocp = vmem_heap_alloc;
if (freep != NULL)
*freep = vmem_heap_free;
return (vmem_heap);
}
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