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 */ 26 27 /* 28 * Initialization routines for the library version of libumem. 29 */ 30 31 #include "umem_base.h" 32 #include "vmem_base.h" 33 #include <unistd.h> 34 #include <dlfcn.h> 35 36 void 37 vmem_heap_init(void) 38 { 39 void *handle = dlopen("libmapmalloc.so.1", RTLD_NOLOAD); 40 41 if (handle != NULL) { 42 log_message("sbrk backend disabled\n"); 43 vmem_backend = VMEM_BACKEND_MMAP; 44 } 45 46 if ((vmem_backend & VMEM_BACKEND_MMAP) != 0) { 47 vmem_backend = VMEM_BACKEND_MMAP; 48 (void) vmem_mmap_arena(NULL, NULL); 49 } else { 50 vmem_backend = VMEM_BACKEND_SBRK; 51 (void) vmem_sbrk_arena(NULL, NULL); 52 } 53 } 54 55 /*ARGSUSED*/ 56 void 57 umem_type_init(caddr_t start, size_t len, size_t pgsize) 58 { 59 pagesize = _sysconf(_SC_PAGESIZE); 60 } 61 62 int 63 umem_get_max_ncpus(void) 64 { 65 if (thr_main() != -1) 66 return (2 * sysconf(_SC_NPROCESSORS_ONLN)); 67 else 68 return (1); 69 } 70