mp-freebsd.cpp revision c2ac210bd84591123bb8803712887e2b016cb78f
/* $Id$ */
/** @file
* IPRT - Multiprocessor, FreeBSD.
*/
/*
* Copyright (C) 2008 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* 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 *
*******************************************************************************/
#define LOG_GROUP RTLOGGROUP_SYSTEM
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <iprt/critsect.h>
/**
* Internal worker that determines the max possible CPU count.
*
* @returns Max cpus.
*/
static RTCPUID rtMpFreeBsdMaxCpus(void)
{
int aiMib[2];
int cCpus = -1;
return cCpus;
AssertFailed();
return 1;
}
{
}
{
}
{
return rtMpFreeBsdMaxCpus() - 1;
}
{
/*
* FreeBSD doesn't support CPU hotplugging so every CPU which appears
* in the tree is also online.
*/
char szName[40];
char szDriver[10];
if (rcBsd == 0)
return true;
return false;
}
{
return idCpu != NIL_RTCPUID
&& idCpu < rtMpFreeBsdMaxCpus();
}
{
if (RTMpIsCpuPossible(idCpu))
return pSet;
}
{
return rtMpFreeBsdMaxCpus();
}
{
if (RTMpIsCpuOnline(idCpu))
return pSet;
}
{
/*
* FreeBSD has sysconf.
*/
return sysconf(_SC_NPROCESSORS_ONLN);
}
{
int uFreqCurr = 0;
if (!RTMpIsCpuOnline(idCpu))
return 0;
/* CPU's have a common frequency. */
if (rc)
return 0;
}
{
if (!RTMpIsCpuOnline(idCpu))
return 0;
/*
* CPU 0 has the freq levels entry. ENOMEM is ok as we don't need all supported
* levels but only the first one.
*/
|| (cbFreqLevels == 0))
return 0;
/* Clear everything starting from the '/' */
unsigned i = 0;
do
{
if (szFreqLevels[i] == '/')
{
break;
}
i++;
} while (i < sizeof(szFreqLevels));
/* Returns 0 on failure. */
return RTStrToUInt32(szFreqLevels);
}