17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*a574db85Sraf * Common Development and Distribution License (the "License").
6*a574db85Sraf * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate *
87c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate * and limitations under the License.
127c478bd9Sstevel@tonic-gate *
137c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate *
197c478bd9Sstevel@tonic-gate * CDDL HEADER END
207c478bd9Sstevel@tonic-gate */
21*a574db85Sraf
227c478bd9Sstevel@tonic-gate /*
23*a574db85Sraf * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
247c478bd9Sstevel@tonic-gate * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate /*
287c478bd9Sstevel@tonic-gate * Initialization routines for the library version of libumem.
297c478bd9Sstevel@tonic-gate */
307c478bd9Sstevel@tonic-gate
317c478bd9Sstevel@tonic-gate #include "umem_base.h"
327c478bd9Sstevel@tonic-gate #include "vmem_base.h"
337c478bd9Sstevel@tonic-gate #include <unistd.h>
347c478bd9Sstevel@tonic-gate #include <dlfcn.h>
357c478bd9Sstevel@tonic-gate
367c478bd9Sstevel@tonic-gate void
vmem_heap_init(void)377c478bd9Sstevel@tonic-gate vmem_heap_init(void)
387c478bd9Sstevel@tonic-gate {
397c478bd9Sstevel@tonic-gate void *handle = dlopen("libmapmalloc.so.1", RTLD_NOLOAD);
407c478bd9Sstevel@tonic-gate
417c478bd9Sstevel@tonic-gate if (handle != NULL) {
427c478bd9Sstevel@tonic-gate log_message("sbrk backend disabled\n");
437c478bd9Sstevel@tonic-gate vmem_backend = VMEM_BACKEND_MMAP;
447c478bd9Sstevel@tonic-gate }
457c478bd9Sstevel@tonic-gate
467c478bd9Sstevel@tonic-gate if ((vmem_backend & VMEM_BACKEND_MMAP) != 0) {
477c478bd9Sstevel@tonic-gate vmem_backend = VMEM_BACKEND_MMAP;
487c478bd9Sstevel@tonic-gate (void) vmem_mmap_arena(NULL, NULL);
497c478bd9Sstevel@tonic-gate } else {
507c478bd9Sstevel@tonic-gate vmem_backend = VMEM_BACKEND_SBRK;
517c478bd9Sstevel@tonic-gate (void) vmem_sbrk_arena(NULL, NULL);
527c478bd9Sstevel@tonic-gate }
537c478bd9Sstevel@tonic-gate }
547c478bd9Sstevel@tonic-gate
557c478bd9Sstevel@tonic-gate /*ARGSUSED*/
567c478bd9Sstevel@tonic-gate void
umem_type_init(caddr_t start,size_t len,size_t pgsize)577c478bd9Sstevel@tonic-gate umem_type_init(caddr_t start, size_t len, size_t pgsize)
587c478bd9Sstevel@tonic-gate {
597c478bd9Sstevel@tonic-gate pagesize = _sysconf(_SC_PAGESIZE);
607c478bd9Sstevel@tonic-gate }
617c478bd9Sstevel@tonic-gate
627c478bd9Sstevel@tonic-gate int
umem_get_max_ncpus(void)637c478bd9Sstevel@tonic-gate umem_get_max_ncpus(void)
647c478bd9Sstevel@tonic-gate {
657c478bd9Sstevel@tonic-gate if (thr_main() != -1)
667c478bd9Sstevel@tonic-gate return (2 * sysconf(_SC_NPROCESSORS_ONLN));
677c478bd9Sstevel@tonic-gate else
687c478bd9Sstevel@tonic-gate return (1);
697c478bd9Sstevel@tonic-gate }
70