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 (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 * Copyright 2012 Joyent, Inc. All rights reserved. 26 */ 27 28 #include "vmem_base.h" 29 #include "umem_base.h" 30 31 uint_t vmem_backend = 0; 32 uint_t vmem_allocator = VM_BESTFIT; 33 34 vmem_t * vmem_heap_arena(vmem_alloc_t ** allocp,vmem_free_t ** freep)35vmem_heap_arena(vmem_alloc_t **allocp, vmem_free_t **freep) 36 { 37 static mutex_t arena_mutex = DEFAULTMUTEX; 38 39 /* 40 * Allow the init thread through, block others until the init completes 41 */ 42 if (umem_ready != UMEM_READY && umem_init_thr != thr_self() && 43 umem_init() == 0) 44 return (NULL); 45 46 (void) mutex_lock(&arena_mutex); 47 if (vmem_heap == NULL) 48 vmem_heap_init(); 49 (void) mutex_unlock(&arena_mutex); 50 51 if (allocp != NULL) 52 *allocp = vmem_heap_alloc; 53 if (freep != NULL) 54 *freep = vmem_heap_free; 55 return (vmem_heap); 56 } 57