xref: /onnv-gate/usr/src/lib/libumem/common/init_lib.c (revision 6812:febeba71273d)
10Sstevel@tonic-gate /*
20Sstevel@tonic-gate  * CDDL HEADER START
30Sstevel@tonic-gate  *
40Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*5891Sraf  * Common Development and Distribution License (the "License").
6*5891Sraf  * You may not use this file except in compliance with the License.
70Sstevel@tonic-gate  *
80Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
90Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
100Sstevel@tonic-gate  * See the License for the specific language governing permissions
110Sstevel@tonic-gate  * and limitations under the License.
120Sstevel@tonic-gate  *
130Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
140Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
150Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
160Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
170Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
180Sstevel@tonic-gate  *
190Sstevel@tonic-gate  * CDDL HEADER END
200Sstevel@tonic-gate  */
21*5891Sraf 
220Sstevel@tonic-gate /*
23*5891Sraf  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
240Sstevel@tonic-gate  * Use is subject to license terms.
250Sstevel@tonic-gate  */
260Sstevel@tonic-gate 
270Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
280Sstevel@tonic-gate 
290Sstevel@tonic-gate /*
300Sstevel@tonic-gate  * Initialization routines for the library version of libumem.
310Sstevel@tonic-gate  */
320Sstevel@tonic-gate 
330Sstevel@tonic-gate #include "umem_base.h"
340Sstevel@tonic-gate #include "vmem_base.h"
350Sstevel@tonic-gate #include <unistd.h>
360Sstevel@tonic-gate #include <dlfcn.h>
370Sstevel@tonic-gate 
380Sstevel@tonic-gate void
vmem_heap_init(void)390Sstevel@tonic-gate vmem_heap_init(void)
400Sstevel@tonic-gate {
410Sstevel@tonic-gate 	void *handle = dlopen("libmapmalloc.so.1", RTLD_NOLOAD);
420Sstevel@tonic-gate 
430Sstevel@tonic-gate 	if (handle != NULL) {
440Sstevel@tonic-gate 		log_message("sbrk backend disabled\n");
450Sstevel@tonic-gate 		vmem_backend = VMEM_BACKEND_MMAP;
460Sstevel@tonic-gate 	}
470Sstevel@tonic-gate 
480Sstevel@tonic-gate 	if ((vmem_backend & VMEM_BACKEND_MMAP) != 0) {
490Sstevel@tonic-gate 		vmem_backend = VMEM_BACKEND_MMAP;
500Sstevel@tonic-gate 		(void) vmem_mmap_arena(NULL, NULL);
510Sstevel@tonic-gate 	} else {
520Sstevel@tonic-gate 		vmem_backend = VMEM_BACKEND_SBRK;
530Sstevel@tonic-gate 		(void) vmem_sbrk_arena(NULL, NULL);
540Sstevel@tonic-gate 	}
550Sstevel@tonic-gate }
560Sstevel@tonic-gate 
570Sstevel@tonic-gate /*ARGSUSED*/
580Sstevel@tonic-gate void
umem_type_init(caddr_t start,size_t len,size_t pgsize)590Sstevel@tonic-gate umem_type_init(caddr_t start, size_t len, size_t pgsize)
600Sstevel@tonic-gate {
610Sstevel@tonic-gate 	pagesize = _sysconf(_SC_PAGESIZE);
620Sstevel@tonic-gate }
630Sstevel@tonic-gate 
640Sstevel@tonic-gate int
umem_get_max_ncpus(void)650Sstevel@tonic-gate umem_get_max_ncpus(void)
660Sstevel@tonic-gate {
670Sstevel@tonic-gate 	if (thr_main() != -1)
680Sstevel@tonic-gate 		return (2 * sysconf(_SC_NPROCESSORS_ONLN));
690Sstevel@tonic-gate 	else
700Sstevel@tonic-gate 		return (1);
710Sstevel@tonic-gate }
72