| 1 | /* $Id: systemmem-linux.cpp 43535 2012-10-04 10:13:55Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - RTSystemQueryTotalRam, Linux ring-3.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2012 Oracle Corporation
|
|---|
| 8 | *
|
|---|
| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
|---|
| 10 | * available from http://www.virtualbox.org. This file is free software;
|
|---|
| 11 | * you can redistribute it and/or modify it under the terms of the GNU
|
|---|
| 12 | * General Public License (GPL) as published by the Free Software
|
|---|
| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
|---|
| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
|---|
| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
|---|
| 16 | *
|
|---|
| 17 | * The contents of this file may alternatively be used under the terms
|
|---|
| 18 | * of the Common Development and Distribution License Version 1.0
|
|---|
| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
|
|---|
| 20 | * VirtualBox OSE distribution, in which case the provisions of the
|
|---|
| 21 | * CDDL are applicable instead of those of the GPL.
|
|---|
| 22 | *
|
|---|
| 23 | * You may elect to license modified versions of this file under the
|
|---|
| 24 | * terms and conditions of either the GPL or the CDDL or both.
|
|---|
| 25 | */
|
|---|
| 26 |
|
|---|
| 27 |
|
|---|
| 28 | /*******************************************************************************
|
|---|
| 29 | * Header Files *
|
|---|
| 30 | *******************************************************************************/
|
|---|
| 31 | #include <iprt/system.h>
|
|---|
| 32 | #include "internal/iprt.h"
|
|---|
| 33 |
|
|---|
| 34 | #include <iprt/err.h>
|
|---|
| 35 | #include <iprt/assert.h>
|
|---|
| 36 |
|
|---|
| 37 | #include <errno.h>
|
|---|
| 38 |
|
|---|
| 39 | /* Satisfy compiller warning */
|
|---|
| 40 | #define __EXPORTED_HEADERS__
|
|---|
| 41 | #include <sys/sysinfo.h>
|
|---|
| 42 | #undef __EXPORTED_HEADERS__
|
|---|
| 43 |
|
|---|
| 44 |
|
|---|
| 45 | RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb)
|
|---|
| 46 | {
|
|---|
| 47 | AssertPtrReturn(pcb, VERR_INVALID_POINTER);
|
|---|
| 48 |
|
|---|
| 49 | struct sysinfo info;
|
|---|
| 50 | int rc = sysinfo(&info);
|
|---|
| 51 | if (rc == 0)
|
|---|
| 52 | {
|
|---|
| 53 | *pcb = (uint64_t)(info.totalram * (unsigned long)info.mem_unit);
|
|---|
| 54 | return VINF_SUCCESS;
|
|---|
| 55 | }
|
|---|
| 56 | return RTErrConvertFromErrno(errno);
|
|---|
| 57 | }
|
|---|
| 58 |
|
|---|
| 59 |
|
|---|
| 60 | RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb)
|
|---|
| 61 | {
|
|---|
| 62 | AssertPtrReturn(pcb, VERR_INVALID_POINTER);
|
|---|
| 63 |
|
|---|
| 64 | struct sysinfo info;
|
|---|
| 65 | int rc = sysinfo(&info);
|
|---|
| 66 | if (rc == 0)
|
|---|
| 67 | {
|
|---|
| 68 | *pcb = (uint64_t)(info.freeram * (unsigned long)info.mem_unit);
|
|---|
| 69 | return VINF_SUCCESS;
|
|---|
| 70 | }
|
|---|
| 71 | return RTErrConvertFromErrno(errno);
|
|---|
| 72 | }
|
|---|
| 73 |
|
|---|
