2N/A/*
2N/A * CDDL HEADER START
2N/A *
2N/A * The contents of this file are subject to the terms of the
2N/A * Common Development and Distribution License (the "License").
2N/A * You may not use this file except in compliance with the License.
2N/A *
2N/A * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
2N/A * or http://www.opensolaris.org/os/licensing.
2N/A * See the License for the specific language governing permissions
2N/A * and limitations under the License.
2N/A *
2N/A * When distributing Covered Code, include this CDDL HEADER in each
2N/A * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
2N/A * If applicable, add the following below this CDDL HEADER, with the
2N/A * fields enclosed by brackets "[]" replaced with your own identifying
2N/A * information: Portions Copyright [yyyy] [name of copyright owner]
2N/A *
2N/A * CDDL HEADER END
2N/A */
2N/A
2N/A/*
2N/A * Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
2N/A */
2N/A
2N/A
2N/A#include "vmem_base.h"
2N/A#include "umem_base.h"
2N/A
2N/Auint_t vmem_backend = 0;
2N/Auint_t vmem_extra_flags = 0;
2N/A
2N/Avmem_t *
2N/Avmem_heap_arena(vmem_alloc_t **allocp, vmem_free_t **freep)
2N/A{
2N/A static mutex_t arena_mutex = DEFAULTMUTEX;
2N/A
2N/A /*
2N/A * Allow the init thread through, block others until the init completes
2N/A */
2N/A if (umem_ready != UMEM_READY && umem_init_thr != thr_self() &&
2N/A umem_init() == 0)
2N/A return (NULL);
2N/A
2N/A (void) mutex_lock(&arena_mutex);
2N/A if (vmem_heap == NULL)
2N/A vmem_heap_init();
2N/A (void) mutex_unlock(&arena_mutex);
2N/A
2N/A if (allocp != NULL)
2N/A *allocp = vmem_heap_alloc;
2N/A if (freep != NULL)
2N/A *freep = vmem_heap_free;
2N/A return (vmem_heap);
2N/A}