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 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 /* 30 * Initialization routines for the library version of libumem. 31 */ 32 33 #include "c_synonyms.h" 34 #include "umem_base.h" 35 #include "vmem_base.h" 36 #include <unistd.h> 37 #include <dlfcn.h> 38 39 void 40 vmem_heap_init(void) 41 { 42 void *handle = dlopen("libmapmalloc.so.1", RTLD_NOLOAD); 43 44 if (handle != NULL) { 45 log_message("sbrk backend disabled\n"); 46 vmem_backend = VMEM_BACKEND_MMAP; 47 } 48 49 if ((vmem_backend & VMEM_BACKEND_MMAP) != 0) { 50 vmem_backend = VMEM_BACKEND_MMAP; 51 (void) vmem_mmap_arena(NULL, NULL); 52 } else { 53 vmem_backend = VMEM_BACKEND_SBRK; 54 (void) vmem_sbrk_arena(NULL, NULL); 55 } 56 } 57 58 /*ARGSUSED*/ 59 void 60 umem_type_init(caddr_t start, size_t len, size_t pgsize) 61 { 62 pagesize = _sysconf(_SC_PAGESIZE); 63 } 64 65 int 66 umem_get_max_ncpus(void) 67 { 68 if (thr_main() != -1) 69 return (2 * sysconf(_SC_NPROCESSORS_ONLN)); 70 else 71 return (1); 72 } 73