private static extern long PdhValidatePathEx(PdhSafeDataSourceHandle hDataSource, string szFullPathBuffer);
private static extern long PdhGetDataSourceTimeRangeH(PdhSafeDataSourceHandle hDataSource, ref IntPtr pdwNumEntries, ref PDH_TIME_INFO pInfo, ref IntPtr pdwBufferSize);
private static extern long PdhOpenQueryH(PdhSafeDataSourceHandle hDataSource, IntPtr dwUserData, out PdhSafeQueryHandle phQuery);
private static extern long PdhEnumObjectsH(PdhSafeDataSourceHandle hDataSource, string szMachineName, IntPtr mszObjectList, ref IntPtr pcchBufferLength, long dwDetailLevel, bool bRefresh);
private static extern long PdhExpandWildCardPathH(PdhSafeDataSourceHandle hDataSource, string szWildCardPath, IntPtr mszExpandedPathList, ref IntPtr pcchPathListLength, long dwFlags);
private static extern long PdhEnumMachinesH(PdhSafeDataSourceHandle hDataSource, IntPtr mszMachineNameList, ref IntPtr pcchBufferLength);
private static extern long PdhEnumObjectItemsH(PdhSafeDataSourceHandle hDataSource, string szMachineName, string szObjectName, IntPtr mszCounterList, ref IntPtr pcchCounterListLength, IntPtr mszInstanceList, ref IntPtr pcchInstanceListLength, long dwDetailLevel, long dwFlags);
private static extern long PdhValidatePathEx(PdhSafeDataSourceHandle hDataSource, string szFullPathBuffer);
private static extern long PdhBindInputDataSource(out PdhSafeDataSourceHandle phDataSource, string szLogFileNameList);
private static extern long PdhGetDataSourceTimeRangeH(PdhSafeDataSourceHandle hDataSource, ref IntPtr pdwNumEntries, ref PDH_TIME_INFO pInfo, ref IntPtr pdwBufferSize);
private static extern long PdhOpenQueryH(PdhSafeDataSourceHandle hDataSource, IntPtr dwUserData, out PdhSafeQueryHandle phQuery);
private static extern long PdhExpandWildCardPathH(PdhSafeDataSourceHandle hDataSource, string szWildCardPath, IntPtr mszExpandedPathList, ref IntPtr pcchPathListLength, long dwFlags);
private static extern long PdhEnumObjectsH(PdhSafeDataSourceHandle hDataSource, string szMachineName, IntPtr mszObjectList, ref IntPtr pcchBufferLength, long dwDetailLevel, bool bRefresh);
private static extern long PdhEnumObjectItemsH(PdhSafeDataSourceHandle hDataSource, string szMachineName, string szObjectName, IntPtr mszCounterList, ref IntPtr pcchCounterListLength, IntPtr mszInstanceList, ref IntPtr pcchInstanceListLength, long dwDetailLevel, long dwFlags);
private static extern long PdhEnumMachinesH(PdhSafeDataSourceHandle hDataSource, IntPtr mszMachineNameList, ref IntPtr pcchBufferLength);
private static extern long PdhBindInputDataSource(out PdhSafeDataSourceHandle phDataSource, string szLogFileNameList);
