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 2005 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include "mtlib.h" 30 #include "vmem_base.h" 31 #include "umem_base.h" 32 33 uint_t vmem_backend = 0; 34 35 vmem_t * 36 vmem_heap_arena(vmem_alloc_t **allocp, vmem_free_t **freep) 37 { 38 static mutex_t arena_mutex = DEFAULTMUTEX; 39 40 /* 41 * Allow the init thread through, block others until the init completes 42 */ 43 if (umem_ready != UMEM_READY && umem_init_thr != thr_self() && 44 umem_init() == 0) 45 return (NULL); 46 47 (void) mutex_lock(&arena_mutex); 48 if (vmem_heap == NULL) 49 vmem_heap_init(); 50 (void) mutex_unlock(&arena_mutex); 51 52 if (allocp != NULL) 53 *allocp = vmem_heap_alloc; 54 if (freep != NULL) 55 *freep = vmem_heap_free; 56 return (vmem_heap); 57 } 58