| 1 | /* $Id: RTSystemQueryTotalRam-win.cpp 96407 2022-08-22 17:43:14Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - RTSystemQueryTotalRam, windows ring-3.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2010-2022 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | /*********************************************************************************************************************************
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| 39 | * Header Files *
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| 40 | *********************************************************************************************************************************/
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| 41 | #include <iprt/win/windows.h>
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| 42 | #include <iprt/system.h>
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| 43 | #include "internal/iprt.h"
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| 44 |
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| 45 | #include <iprt/errcore.h>
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| 46 | #include <iprt/assert.h>
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| 47 | #include <iprt/string.h>
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| 48 |
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| 49 | #include "internal-r3-win.h"
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| 50 |
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| 51 |
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| 52 | /*********************************************************************************************************************************
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| 53 | * Global Variables *
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| 54 | *********************************************************************************************************************************/
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| 55 | static bool volatile g_fInitialized = false;
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| 56 | typedef BOOL (WINAPI *PFNGLOBALMEMORYSTATUSEX)(LPMEMORYSTATUSEX);
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| 57 | static PFNGLOBALMEMORYSTATUSEX g_pfnGlobalMemoryStatusEx = NULL;
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| 58 |
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| 59 |
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| 60 | /**
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| 61 | * The GlobalMemoryStatusEx API is not available on older Windows version.
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| 62 | *
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| 63 | * @returns Pointer to GlobalMemoryStatusEx or NULL if not available.
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| 64 | */
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| 65 | DECLINLINE(PFNGLOBALMEMORYSTATUSEX) rtSystemWinGetExApi(void)
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| 66 | {
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| 67 | PFNGLOBALMEMORYSTATUSEX pfnEx;
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| 68 | if (g_fInitialized)
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| 69 | pfnEx = g_pfnGlobalMemoryStatusEx;
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| 70 | else
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| 71 | {
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| 72 | pfnEx = (PFNGLOBALMEMORYSTATUSEX)GetProcAddress(g_hModKernel32, "GlobalMemoryStatusEx");
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| 73 | g_pfnGlobalMemoryStatusEx = pfnEx;
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| 74 | g_fInitialized = true;
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| 75 | }
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| 76 | return pfnEx;
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| 77 | }
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| 78 |
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| 79 |
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| 80 | RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb)
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| 81 | {
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| 82 | AssertPtrReturn(pcb, VERR_INVALID_POINTER);
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| 83 |
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| 84 | int rc = VINF_SUCCESS;
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| 85 | PFNGLOBALMEMORYSTATUSEX pfnGlobalMemoryStatusEx = rtSystemWinGetExApi();
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| 86 | if (pfnGlobalMemoryStatusEx)
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| 87 | {
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| 88 | MEMORYSTATUSEX MemStatus;
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| 89 | MemStatus.dwLength = sizeof(MemStatus);
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| 90 | if (pfnGlobalMemoryStatusEx(&MemStatus))
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| 91 | *pcb = MemStatus.ullTotalPhys;
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| 92 | else
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| 93 | rc = RTErrConvertFromWin32(GetLastError());
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| 94 | }
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| 95 | else
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| 96 | {
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| 97 | MEMORYSTATUS MemStatus;
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| 98 | RT_ZERO(MemStatus);
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| 99 | MemStatus.dwLength = sizeof(MemStatus);
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| 100 | GlobalMemoryStatus(&MemStatus);
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| 101 | *pcb = MemStatus.dwTotalPhys;
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| 102 | }
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| 103 | return rc;
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| 104 | }
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| 105 |
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| 106 |
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| 107 | RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb)
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| 108 | {
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| 109 | AssertPtrReturn(pcb, VERR_INVALID_POINTER);
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| 110 |
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| 111 | int rc = VINF_SUCCESS;
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| 112 | PFNGLOBALMEMORYSTATUSEX pfnGlobalMemoryStatusEx = rtSystemWinGetExApi();
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| 113 | if (pfnGlobalMemoryStatusEx)
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| 114 | {
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| 115 | MEMORYSTATUSEX MemStatus;
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| 116 | MemStatus.dwLength = sizeof(MemStatus);
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| 117 | if (pfnGlobalMemoryStatusEx(&MemStatus))
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| 118 | *pcb = MemStatus.ullAvailPhys;
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| 119 | else
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| 120 | rc = RTErrConvertFromWin32(GetLastError());
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| 121 | }
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| 122 | else
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| 123 | {
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| 124 | MEMORYSTATUS MemStatus;
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| 125 | RT_ZERO(MemStatus);
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| 126 | MemStatus.dwLength = sizeof(MemStatus);
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| 127 | GlobalMemoryStatus(&MemStatus);
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| 128 | *pcb = MemStatus.dwAvailPhys;
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| 129 | }
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| 130 | return rc;
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| 131 | }
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