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/////////////////////////////////////////////////////////////////////////////////////////////
// Copyright 2017 Intel Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or imlied.
// See the License for the specific language governing permissions and
// limitations under the License.
/////////////////////////////////////////////////////////////////////////////////////////////
#include "IntelPowerGadgetLib.h"
#include <Windows.h>
#include <string>
#include <vector>
using namespace std;
wstring g_lastError;
HMODULE g_hModule = NULL;
static bool split(const wstring& s, wstring &path)
{
bool bResult = false;
vector<wstring> output;
wstring::size_type prev_pos = 0, pos = 0;
while((pos = s.find(L';', pos)) != wstring::npos)
{
wstring substring( s.substr(prev_pos, pos-prev_pos) );
if (substring.find(L"Power Gadget 2.") != wstring::npos)
{
path = substring;
bResult = true;
break;
}
prev_pos = ++pos;
}
if (!bResult)
{
wstring substring(s.substr(prev_pos, pos-prev_pos));
if (substring.find(L"Power Gadget 2.") != wstring::npos)
{
path = substring;
bResult = true;
}
}
if (bResult)
{
basic_string <char>::size_type pos = path.rfind(L" ");
wstring version = path.substr(pos+1, path.length());
double fVer = _wtof(version.c_str());
if (fVer > 2.6)
bResult = true;
}
return bResult;
}
static bool GetLibraryLocation(wstring& strLocation)
{
WCHAR *pszPath = _wgetenv(L"IPG_Dir");
if (pszPath == NULL || wcslen(pszPath) == 0)
return false;
WCHAR *pszVersion = _wgetenv(L"IPG_Ver");
if (pszVersion == NULL || wcslen(pszVersion) == 0)
return false;
int version = (int)(_wtof(pszVersion) * 100);
if (version >= 270)
{
#if _M_X64
strLocation = wstring(pszPath) + L"\\EnergyLib64.dll";
#else
strLocation = wstring(pszPath) + L"\\EnergyLib32.dll";
#endif
return true;
}
else
return false;
}
CIntelPowerGadgetLib::CIntelPowerGadgetLib(void) :
pInitialize(NULL),
pGetNumNodes(NULL),
pGetMsrName(NULL),
pGetMsrFunc(NULL),
pGetIAFrequency(NULL),
pGetTDP(NULL),
pGetMaxTemperature(NULL),
pGetTemperature(NULL),
pReadSample(NULL),
pGetBaseFrequency(NULL),
pGetPowerData(NULL),
pGetNumMsrs(NULL),
pReadMSR(NULL)
{
LastInstructions=0,LastUnhalted=0, LastRef=0;
wstring strLocation;
if (GetLibraryLocation(strLocation) == false)
{
g_lastError = L"Intel Power Gadget 2.7 or higher not found. If unsure, check if the path is in the user's path environment variable";
return;
}
g_hModule = LoadLibrary(strLocation.c_str());
if (g_hModule == NULL)
{
g_lastError = L"LoadLibrary failed on " + strLocation;
return;
}
pInitialize = (IPGInitialize) GetProcAddress(g_hModule, "IntelEnergyLibInitialize");
pGetNumNodes = (IPGGetNumNodes) GetProcAddress(g_hModule, "GetNumNodes");
pGetMsrName = (IPGGetMsrName) GetProcAddress(g_hModule, "GetMsrName");
pGetMsrFunc = (IPGGetMsrFunc) GetProcAddress(g_hModule, "GetMsrFunc");
pGetIAFrequency = (IPGGetIAFrequency) GetProcAddress(g_hModule, "GetIAFrequency");
pGetTDP = (IPGGetTDP) GetProcAddress(g_hModule, "GetTDP");
pGetMaxTemperature = (IPGGetMaxTemperature) GetProcAddress(g_hModule, "GetMaxTemperature");
pGetTemperature = (IPGGetTemperature) GetProcAddress(g_hModule, "GetTemperature");
pReadSample = (IPGReadSample) GetProcAddress(g_hModule, "ReadSample");
pGetBaseFrequency = (IPGGetBaseFrequency) GetProcAddress(g_hModule, "GetBaseFrequency");
pGetPowerData = (IPGGetPowerData) GetProcAddress(g_hModule, "GetPowerData");
pGetNumMsrs = (IPGGetNumMsrs) GetProcAddress(g_hModule, "GetNumMsrs");
}
CIntelPowerGadgetLib::~CIntelPowerGadgetLib(void)
{
if (g_hModule != NULL)
FreeLibrary(g_hModule);
}
wstring CIntelPowerGadgetLib::GetLastError()
{
return g_lastError;
}
bool CIntelPowerGadgetLib::IntelEnergyLibInitialize(void)
{
if (pInitialize == NULL)
return false;
bool bSuccess = pInitialize();
if (!bSuccess)
{
g_lastError = L"Initializing the energy library failed";
return false;
}
return true;
}
bool CIntelPowerGadgetLib::GetNumNodes(int * nNodes)
{
if(pGetNumNodes)
return pGetNumNodes(nNodes);
return false;
}
bool CIntelPowerGadgetLib::GetNumMsrs(int * nMsrs)
{
if(pGetNumMsrs)
return pGetNumMsrs(nMsrs);
return false;
}
bool CIntelPowerGadgetLib::GetMsrName(int iMsr, wchar_t *pszName)
{
if(pGetMsrName)
return pGetMsrName(iMsr, pszName);
return false;
}
bool CIntelPowerGadgetLib::GetMsrFunc(int iMsr, int *funcID)
{
if(pGetMsrFunc)
return pGetMsrFunc(iMsr, funcID);
return false;
}
bool CIntelPowerGadgetLib::GetIAFrequency(int iNode, int *freqInMHz)
{
if(pGetIAFrequency)
return pGetIAFrequency(iNode, freqInMHz);
return false;
}
bool CIntelPowerGadgetLib::GetTDP(int iNode, double *TDP)
{
if(pGetTDP)
return pGetTDP(iNode, TDP);
return false;
}
bool CIntelPowerGadgetLib::GetMaxTemperature(int iNode, int *degreeC)
{
if(pGetMaxTemperature)
return pGetMaxTemperature(iNode, degreeC);
return false;
}
bool CIntelPowerGadgetLib::GetTemperature(int iNode, int *degreeC)
{
if(pGetTemperature)
return pGetTemperature(iNode, degreeC);
return false;
}
bool CIntelPowerGadgetLib::ReadSample()
{
bool bSuccess = pReadSample();
if (bSuccess == false)
g_lastError = L"MSR overflowed. You can safely discard this sample";
return bSuccess;
}
bool CIntelPowerGadgetLib::GetBaseFrequency(int iNode, double *baseFrequency)
{
if(pGetBaseFrequency)
return pGetBaseFrequency(iNode, baseFrequency);
return false;
}
bool CIntelPowerGadgetLib::GetPowerData(int iNode, int iMSR, double *results, int *nResult)
{
if(pGetPowerData)
return pGetPowerData(iNode, iMSR, results, nResult);
return false;
}