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Diffstat (limited to '')
-rw-r--r-- | src/VBox/Runtime/r3/win/RTSystemQueryTotalRam-win.cpp | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/win/RTSystemQueryTotalRam-win.cpp b/src/VBox/Runtime/r3/win/RTSystemQueryTotalRam-win.cpp new file mode 100644 index 00000000..49465166 --- /dev/null +++ b/src/VBox/Runtime/r3/win/RTSystemQueryTotalRam-win.cpp @@ -0,0 +1,131 @@ +/* $Id: RTSystemQueryTotalRam-win.cpp $ */ +/** @file + * IPRT - RTSystemQueryTotalRam, windows ring-3. + */ + +/* + * Copyright (C) 2010-2023 Oracle and/or its affiliates. + * + * This file is part of VirtualBox base platform packages, as + * available from https://www.virtualbox.org. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation, in version 3 of the + * License. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, see <https://www.gnu.org/licenses>. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included + * in the VirtualBox distribution, in which case the provisions of the + * CDDL are applicable instead of those of the GPL. + * + * You may elect to license modified versions of this file under the + * terms and conditions of either the GPL or the CDDL or both. + * + * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0 + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/win/windows.h> +#include <iprt/system.h> +#include "internal/iprt.h" + +#include <iprt/errcore.h> +#include <iprt/assert.h> +#include <iprt/string.h> + +#include "internal-r3-win.h" + + +/********************************************************************************************************************************* +* Global Variables * +*********************************************************************************************************************************/ +static bool volatile g_fInitialized = false; +typedef BOOL (WINAPI *PFNGLOBALMEMORYSTATUSEX)(LPMEMORYSTATUSEX); +static PFNGLOBALMEMORYSTATUSEX g_pfnGlobalMemoryStatusEx = NULL; + + +/** + * The GlobalMemoryStatusEx API is not available on older Windows version. + * + * @returns Pointer to GlobalMemoryStatusEx or NULL if not available. + */ +DECLINLINE(PFNGLOBALMEMORYSTATUSEX) rtSystemWinGetExApi(void) +{ + PFNGLOBALMEMORYSTATUSEX pfnEx; + if (g_fInitialized) + pfnEx = g_pfnGlobalMemoryStatusEx; + else + { + pfnEx = (PFNGLOBALMEMORYSTATUSEX)GetProcAddress(g_hModKernel32, "GlobalMemoryStatusEx"); + g_pfnGlobalMemoryStatusEx = pfnEx; + g_fInitialized = true; + } + return pfnEx; +} + + +RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb) +{ + AssertPtrReturn(pcb, VERR_INVALID_POINTER); + + int rc = VINF_SUCCESS; + PFNGLOBALMEMORYSTATUSEX pfnGlobalMemoryStatusEx = rtSystemWinGetExApi(); + if (pfnGlobalMemoryStatusEx) + { + MEMORYSTATUSEX MemStatus; + MemStatus.dwLength = sizeof(MemStatus); + if (pfnGlobalMemoryStatusEx(&MemStatus)) + *pcb = MemStatus.ullTotalPhys; + else + rc = RTErrConvertFromWin32(GetLastError()); + } + else + { + MEMORYSTATUS MemStatus; + RT_ZERO(MemStatus); + MemStatus.dwLength = sizeof(MemStatus); + GlobalMemoryStatus(&MemStatus); + *pcb = MemStatus.dwTotalPhys; + } + return rc; +} + + +RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb) +{ + AssertPtrReturn(pcb, VERR_INVALID_POINTER); + + int rc = VINF_SUCCESS; + PFNGLOBALMEMORYSTATUSEX pfnGlobalMemoryStatusEx = rtSystemWinGetExApi(); + if (pfnGlobalMemoryStatusEx) + { + MEMORYSTATUSEX MemStatus; + MemStatus.dwLength = sizeof(MemStatus); + if (pfnGlobalMemoryStatusEx(&MemStatus)) + *pcb = MemStatus.ullAvailPhys; + else + rc = RTErrConvertFromWin32(GetLastError()); + } + else + { + MEMORYSTATUS MemStatus; + RT_ZERO(MemStatus); + MemStatus.dwLength = sizeof(MemStatus); + GlobalMemoryStatus(&MemStatus); + *pcb = MemStatus.dwAvailPhys; + } + return rc; +} |