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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-05-06 03:01:46 +0000 |
commit | f8fe689a81f906d1b91bb3220acde2a4ecb14c5b (patch) | |
tree | 26484e9d7e2c67806c2d1760196ff01aaa858e8c /src/VBox/Runtime/r3/linux/systemmem-linux.cpp | |
parent | Initial commit. (diff) | |
download | virtualbox-upstream.tar.xz virtualbox-upstream.zip |
Adding upstream version 6.0.4-dfsg.upstream/6.0.4-dfsgupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'src/VBox/Runtime/r3/linux/systemmem-linux.cpp')
-rw-r--r-- | src/VBox/Runtime/r3/linux/systemmem-linux.cpp | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/src/VBox/Runtime/r3/linux/systemmem-linux.cpp b/src/VBox/Runtime/r3/linux/systemmem-linux.cpp new file mode 100644 index 00000000..93bd0c0a --- /dev/null +++ b/src/VBox/Runtime/r3/linux/systemmem-linux.cpp @@ -0,0 +1,109 @@ +/* $Id: systemmem-linux.cpp $ */ +/** @file + * IPRT - RTSystemQueryTotalRam, Linux ring-3. + */ + +/* + * Copyright (C) 2012-2019 Oracle Corporation + * + * This file is part of VirtualBox Open Source Edition (OSE), as + * available from http://www.virtualbox.org. This file is free software; + * you can redistribute it and/or modify it under the terms of the GNU + * General Public License (GPL) as published by the Free Software + * Foundation, in version 2 as it comes in the "COPYING" file of the + * VirtualBox OSE distribution. VirtualBox OSE is distributed in the + * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. + * + * The contents of this file may alternatively be used under the terms + * of the Common Development and Distribution License Version 1.0 + * (CDDL) only, as it comes in the "COPYING.CDDL" file of the + * VirtualBox OSE 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. + */ + + +/********************************************************************************************************************************* +* Header Files * +*********************************************************************************************************************************/ +#include <iprt/system.h> +#include "internal/iprt.h" + +#include <iprt/errcore.h> +#include <iprt/assert.h> +#include <iprt/string.h> + +#include <stdio.h> +#include <errno.h> + +/* Satisfy compiller warning */ +#define __EXPORTED_HEADERS__ +#include <sys/sysinfo.h> +#undef __EXPORTED_HEADERS__ + + +RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb) +{ + AssertPtrReturn(pcb, VERR_INVALID_POINTER); + + struct sysinfo info; + int rc = sysinfo(&info); + if (rc == 0) + { + *pcb = (uint64_t)info.totalram * info.mem_unit; + return VINF_SUCCESS; + } + return RTErrConvertFromErrno(errno); +} + + +RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb) +{ + AssertPtrReturn(pcb, VERR_INVALID_POINTER); + + FILE *pFile = fopen("/proc/meminfo", "r"); + if (pFile) + { + int rc = VERR_NOT_FOUND; + uint64_t cbTotal = 0; + uint64_t cbFree = 0; + uint64_t cbBuffers = 0; + uint64_t cbCached = 0; + char sz[256]; + while (fgets(sz, sizeof(sz), pFile)) + { + if (!strncmp(sz, RT_STR_TUPLE("MemTotal:"))) + rc = RTStrToUInt64Ex(RTStrStripL(&sz[sizeof("MemTotal:")]), NULL, 0, &cbTotal); + else if (!strncmp(sz, RT_STR_TUPLE("MemFree:"))) + rc = RTStrToUInt64Ex(RTStrStripL(&sz[sizeof("MemFree:")]), NULL, 0, &cbFree); + else if (!strncmp(sz, RT_STR_TUPLE("Buffers:"))) + rc = RTStrToUInt64Ex(RTStrStripL(&sz[sizeof("Buffers:")]), NULL, 0, &cbBuffers); + else if (!strncmp(sz, RT_STR_TUPLE("Cached:"))) + rc = RTStrToUInt64Ex(RTStrStripL(&sz[sizeof("Cached:")]), NULL, 0, &cbCached); + if (RT_FAILURE(rc)) + break; + } + fclose(pFile); + if (RT_SUCCESS(rc)) + { + *pcb = (cbFree + cbBuffers + cbCached) * _1K; + return VINF_SUCCESS; + } + } + /* + * Fallback (e.g. /proc not mapped) to sysinfo. Less accurat because there + * is no information about the cached memory. 'Cached:' from above is only + * accessible through proc :-( + */ + struct sysinfo info; + int rc = sysinfo(&info); + if (rc == 0) + { + *pcb = ((uint64_t)info.freeram + info.bufferram) * info.mem_unit; + return VINF_SUCCESS; + } + return RTErrConvertFromErrno(errno); +} + |