| 1 | /* $Id: RTSystemQueryTotalRam-win.cpp 76553 2019-01-01 01:45:53Z vboxsync $ */
|
|---|
| 2 | /** @file
|
|---|
| 3 | * IPRT - RTSystemQueryTotalRam, windows ring-3.
|
|---|
| 4 | */
|
|---|
| 5 |
|
|---|
| 6 | /*
|
|---|
| 7 | * Copyright (C) 2010-2019 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/win/windows.h>
|
|---|
| 32 | #include <iprt/system.h>
|
|---|
| 33 | #include "internal/iprt.h"
|
|---|
| 34 |
|
|---|
| 35 | #include <iprt/errcore.h>
|
|---|
| 36 | #include <iprt/assert.h>
|
|---|
| 37 | #include <iprt/string.h>
|
|---|
| 38 |
|
|---|
| 39 | #include "internal-r3-win.h"
|
|---|
| 40 |
|
|---|
| 41 |
|
|---|
| 42 | /*********************************************************************************************************************************
|
|---|
| 43 | * Global Variables *
|
|---|
| 44 | *********************************************************************************************************************************/
|
|---|
| 45 | static bool volatile g_fInitialized = false;
|
|---|
| 46 | typedef BOOL (WINAPI *PFNGLOBALMEMORYSTATUSEX)(LPMEMORYSTATUSEX);
|
|---|
| 47 | static PFNGLOBALMEMORYSTATUSEX g_pfnGlobalMemoryStatusEx = NULL;
|
|---|
| 48 |
|
|---|
| 49 |
|
|---|
| 50 | /**
|
|---|
| 51 | * The GlobalMemoryStatusEx API is not available on older Windows version.
|
|---|
| 52 | *
|
|---|
| 53 | * @returns Pointer to GlobalMemoryStatusEx or NULL if not available.
|
|---|
| 54 | */
|
|---|
| 55 | DECLINLINE(PFNGLOBALMEMORYSTATUSEX) rtSystemWinGetExApi(void)
|
|---|
| 56 | {
|
|---|
| 57 | PFNGLOBALMEMORYSTATUSEX pfnEx;
|
|---|
| 58 | if (g_fInitialized)
|
|---|
| 59 | pfnEx = g_pfnGlobalMemoryStatusEx;
|
|---|
| 60 | else
|
|---|
| 61 | {
|
|---|
| 62 | pfnEx = (PFNGLOBALMEMORYSTATUSEX)GetProcAddress(g_hModKernel32, "GlobalMemoryStatusEx");
|
|---|
| 63 | g_pfnGlobalMemoryStatusEx = pfnEx;
|
|---|
| 64 | g_fInitialized = true;
|
|---|
| 65 | }
|
|---|
| 66 | return pfnEx;
|
|---|
| 67 | }
|
|---|
| 68 |
|
|---|
| 69 |
|
|---|
| 70 | RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb)
|
|---|
| 71 | {
|
|---|
| 72 | AssertPtrReturn(pcb, VERR_INVALID_POINTER);
|
|---|
| 73 |
|
|---|
| 74 | int rc = VINF_SUCCESS;
|
|---|
| 75 | PFNGLOBALMEMORYSTATUSEX pfnGlobalMemoryStatusEx = rtSystemWinGetExApi();
|
|---|
| 76 | if (pfnGlobalMemoryStatusEx)
|
|---|
| 77 | {
|
|---|
| 78 | MEMORYSTATUSEX MemStatus;
|
|---|
| 79 | MemStatus.dwLength = sizeof(MemStatus);
|
|---|
| 80 | if (pfnGlobalMemoryStatusEx(&MemStatus))
|
|---|
| 81 | *pcb = MemStatus.ullTotalPhys;
|
|---|
| 82 | else
|
|---|
| 83 | rc = RTErrConvertFromWin32(GetLastError());
|
|---|
| 84 | }
|
|---|
| 85 | else
|
|---|
| 86 | {
|
|---|
| 87 | MEMORYSTATUS MemStatus;
|
|---|
| 88 | RT_ZERO(MemStatus);
|
|---|
| 89 | MemStatus.dwLength = sizeof(MemStatus);
|
|---|
| 90 | GlobalMemoryStatus(&MemStatus);
|
|---|
| 91 | *pcb = MemStatus.dwTotalPhys;
|
|---|
| 92 | }
|
|---|
| 93 | return rc;
|
|---|
| 94 | }
|
|---|
| 95 |
|
|---|
| 96 |
|
|---|
| 97 | RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb)
|
|---|
| 98 | {
|
|---|
| 99 | AssertPtrReturn(pcb, VERR_INVALID_POINTER);
|
|---|
| 100 |
|
|---|
| 101 | int rc = VINF_SUCCESS;
|
|---|
| 102 | PFNGLOBALMEMORYSTATUSEX pfnGlobalMemoryStatusEx = rtSystemWinGetExApi();
|
|---|
| 103 | if (pfnGlobalMemoryStatusEx)
|
|---|
| 104 | {
|
|---|
| 105 | MEMORYSTATUSEX MemStatus;
|
|---|
| 106 | MemStatus.dwLength = sizeof(MemStatus);
|
|---|
| 107 | if (pfnGlobalMemoryStatusEx(&MemStatus))
|
|---|
| 108 | *pcb = MemStatus.ullAvailPhys;
|
|---|
| 109 | else
|
|---|
| 110 | rc = RTErrConvertFromWin32(GetLastError());
|
|---|
| 111 | }
|
|---|
| 112 | else
|
|---|
| 113 | {
|
|---|
| 114 | MEMORYSTATUS MemStatus;
|
|---|
| 115 | RT_ZERO(MemStatus);
|
|---|
| 116 | MemStatus.dwLength = sizeof(MemStatus);
|
|---|
| 117 | GlobalMemoryStatus(&MemStatus);
|
|---|
| 118 | *pcb = MemStatus.dwAvailPhys;
|
|---|
| 119 | }
|
|---|
| 120 | return rc;
|
|---|
| 121 | }
|
|---|
