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/* $Id: systemmem-freebsd.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 <sys/types.h>
#include <sys/sysctl.h>
#include <errno.h>
RTDECL(int) RTSystemQueryTotalRam(uint64_t *pcb)
{
int rc = VINF_SUCCESS;
u_long cbMemPhys = 0;
size_t cbParameter = sizeof(cbMemPhys);
AssertPtrReturn(pcb, VERR_INVALID_POINTER);
if (!sysctlbyname("hw.physmem", &cbMemPhys, &cbParameter, NULL, 0))
{
*pcb = cbMemPhys;
return VINF_SUCCESS;
}
return RTErrConvertFromErrno(errno);
}
RTDECL(int) RTSystemQueryAvailableRam(uint64_t *pcb)
{
AssertPtrReturn(pcb, VERR_INVALID_POINTER);
int rc = VINF_SUCCESS;
u_int cPagesMemFree = 0;
u_int cPagesMemInactive = 0;
u_int cPagesMemCached = 0;
u_int cPagesMemUsed = 0;
int cbPage = 0;
size_t cbParameter;
int cProcessed = 0;
cbParameter = sizeof(cPagesMemFree);
if (sysctlbyname("vm.stats.vm.v_free_count", &cPagesMemFree, &cbParameter, NULL, 0))
rc = RTErrConvertFromErrno(errno);
cbParameter = sizeof(cPagesMemUsed);
if ( RT_SUCCESS(rc)
&& sysctlbyname("vm.stats.vm.v_active_count", &cPagesMemUsed, &cbParameter, NULL, 0))
rc = RTErrConvertFromErrno(errno);
cbParameter = sizeof(cPagesMemInactive);
if ( RT_SUCCESS(rc)
&& sysctlbyname("vm.stats.vm.v_inactive_count", &cPagesMemInactive, &cbParameter, NULL, 0))
rc = RTErrConvertFromErrno(errno);
cbParameter = sizeof(cPagesMemCached);
if ( RT_SUCCESS(rc)
&& sysctlbyname("vm.stats.vm.v_cache_count", &cPagesMemCached, &cbParameter, NULL, 0))
rc = RTErrConvertFromErrno(errno);
cbParameter = sizeof(cbPage);
if ( RT_SUCCESS(rc)
&& sysctlbyname("hw.pagesize", &cbPage, &cbParameter, NULL, 0))
rc = RTErrConvertFromErrno(errno);
if (RT_SUCCESS(rc))
*pcb = (cPagesMemFree + cPagesMemInactive + cPagesMemCached ) * cbPage;
return rc;
}
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