/// <summary>
/// Stops the timer and deletes it
/// </summary>
public bool Stop()
{
if (_isRunning == false)
{
Log.Debug("Not running. returning");
return(true);
}
bool retVal = true;
try
{
retVal = Kernel32Interop.DeleteTimerQueueTimer(IntPtr.Zero, _timerHandle, IntPtr.Zero);
_isRunning = false;
if (!retVal)
{
var getLastError = Marshal.GetLastWin32Error();
if (getLastError == ErrorIOPending)
{
retVal = true;
}
}
}
catch
{
}
return(retVal);
}
/// <summary>
/// Start the timer. Optional param will be sent
/// to the callback function
/// </summary>
/// <param name="param">parameter to send to callback</param>
/// <returns>true on success</returns>
public bool Start(IntPtr param)
{
int getLastError;
if (_isRunning == true)
{
// already running
Log.Debug("Timer is already running. returning");
return(true);
}
bool retVal = Kernel32Interop.CreateTimerQueueTimer(
out _timerHandle,
IntPtr.Zero,
_callback,
param,
_dueTime,
_period,
(uint)Flag.WT_EXECUTEINIOTHREAD);
if (retVal)
{
_isRunning = true;
}
else
{
getLastError = Marshal.GetLastWin32Error();
Log.Debug("Error while starting timer. getLastError=" + getLastError);
}
return(retVal);
}
/// <summary>
/// Returns the mapped file name of a memory mapped file
/// </summary>
/// <param name="hModule">handle to the module</param>
/// <returns>mapped file name</returns>
public static String GetMappedFileName(IntPtr hModule)
{
var mappedFileName = String.Empty;
const int bufLen = 260;
var buffer = new StringBuilder(bufLen);
int len = Kernel32Interop.GetMappedFileName(Kernel32Interop.GetCurrentProcess(),
hModule,
buffer,
buffer.Capacity);
if (len != 0)
{
mappedFileName = buffer.ToString();
}
return(mappedFileName);
}
/// <summary>
/// Converts a filename from the \\Device\\HarddiskVolume1\\....\\abc.exe
/// format to a Dos file name
/// </summary>
/// <param name="mappedFileName">input mapped file name</param>
/// <returns>dos file name</returns>
public static String ConvertMappedFileNameToDosFileName(String mappedFileName)
{
const int bufLen = 260;
var fileName = String.Empty;
for (var driveLetter = 'A'; driveLetter <= 'Z'; driveLetter++)
{
var drive = driveLetter + ":";
var buffer = new StringBuilder(bufLen);
if (Kernel32Interop.QueryDosDevice(drive, buffer, buffer.Capacity) == 0)
{
continue;
}
var devicePath = buffer.ToString();
if (mappedFileName.StartsWith(devicePath))
{
fileName = (drive + mappedFileName.Substring(devicePath.Length));
break;
}
}
return(fileName);
}
