public static void ClearFileSystemCache(bool ClearStandbyCache)
{
	try
	{
		if (SetIncreasePrivilege("SeIncreaseQuotaPrivilege"))
		{
			uint num;
			if (!Is64BitMode())
			{
				SYSTEM_CACHE_INFORMATION sYSTEM_CACHE_INFORMATION = default(SYSTEM_CACHE_INFORMATION);
				sYSTEM_CACHE_INFORMATION.MinimumWorkingSet = uint.MaxValue;
				sYSTEM_CACHE_INFORMATION.MaximumWorkingSet = uint.MaxValue;
				int length = Marshal.SizeOf(sYSTEM_CACHE_INFORMATION);
				GCHandle gCHandle = GCHandle.Alloc(sYSTEM_CACHE_INFORMATION, GCHandleType.Pinned);
				num = NtSetSystemInformation(21, gCHandle.AddrOfPinnedObject(), length);
				gCHandle.Free();
			}
			else
			{
				SYSTEM_CACHE_INFORMATION_64_BIT sYSTEM_CACHE_INFORMATION_64_BIT = default(SYSTEM_CACHE_INFORMATION_64_BIT);
				sYSTEM_CACHE_INFORMATION_64_BIT.MinimumWorkingSet = -1L;
				sYSTEM_CACHE_INFORMATION_64_BIT.MaximumWorkingSet = -1L;
				int length = Marshal.SizeOf(sYSTEM_CACHE_INFORMATION_64_BIT);
				GCHandle gCHandle = GCHandle.Alloc(sYSTEM_CACHE_INFORMATION_64_BIT, GCHandleType.Pinned);
				num = NtSetSystemInformation(21, gCHandle.AddrOfPinnedObject(), length);
				gCHandle.Free();
			}
			if (num != 0)
			{
				throw new Exception("NtSetSystemInformation(SYSTEMCACHEINFORMATION) error: ", new Win32Exception(Marshal.GetLastWin32Error()));
			}
		}
		if (ClearStandbyCache && SetIncreasePrivilege("SeProfileSingleProcessPrivilege"))
		{
			int length2 = Marshal.SizeOf(4);
			GCHandle gCHandle2 = GCHandle.Alloc(4, GCHandleType.Pinned);
			uint num2 = NtSetSystemInformation(80, gCHandle2.AddrOfPinnedObject(), length2);
			gCHandle2.Free();
			if (num2 != 0)
			{
				throw new Exception("NtSetSystemInformation(SYSTEMMEMORYLISTINFORMATION) error: ", new Win32Exception(Marshal.GetLastWin32Error()));
			}
		}
	}
	catch (Exception ex)
	{
		Console.Write(ex.ToString());
	}
}