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////////////////////////////////////////////////////////////////////////////////////////
//
// Nestopia - NES/Famicom emulator written in C++
//
// Copyright (C) 2003-2008 Martin Freij
//
// This file is part of Nestopia.
//
// Nestopia 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; either version 2 of the License, or
// (at your option) any later version.
//
// Nestopia 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 Nestopia; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
////////////////////////////////////////////////////////////////////////////////////////
#include "NstSystemInfo.hpp"
#include <windows.h>
namespace Nestopia
{
namespace System
{
namespace Info
{
uint GetCpuCount()
{
struct Stored
{
uint count;
Stored()
{
SYSTEM_INFO sysinfo;
::GetSystemInfo( &sysinfo );
count = NST_MIN(sysinfo.dwNumberOfProcessors,1);
}
};
static const Stored stored;
return stored.count;
}
uint GetCpuSpeed()
{
struct Stored
{
uint mHz;
Stored()
: mHz(0)
{
HKEY hKey;
if
(
ERROR_SUCCESS == ::RegOpenKeyEx
(
HKEY_LOCAL_MACHINE,
L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0",
0,
KEY_QUERY_VALUE,
&hKey
)
)
{
DWORD data, size;
if
(
ERROR_SUCCESS == ::RegQueryValueEx
(
hKey,
L"~MHz",
NULL,
&data,
NULL,
&size
)
&& data == REG_DWORD
&& size == sizeof(DWORD)
&& ERROR_SUCCESS == ::RegQueryValueEx
(
hKey,
L"~MHz",
NULL,
NULL,
reinterpret_cast<BYTE*>(&data),
&size
)
)
mHz = data;
::RegCloseKey( hKey );
}
}
};
static const Stored stored;
return stored.mHz;
}
}
}
}
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