private void TouchMutexOnTimerFire(object state)
{
var mutex = _mutex;
if (mutex != null)
{
_log.Debug("Touching mutex");
ControlMutex.Touch(AdminConnectionString, Timeouts.AdminDatabase, mutex.Status.MutexValue);
}
}
private void InitMutex()
{
_mutex = ControlMutex.Grab(AdminConnectionString, Timeouts.AdminDatabase);
if (!_mutex.Success)
{
_log.ErrorFormat(
"Mutex failure: {0}",
_mutex.Status.ToString());
throw new ApplicationException("Could not get exclusive access to the staging database");
}
_mutexTimer = new Timer(
TouchMutexOnTimerFire,
null,
MutexTimerIntervalSecs * 1000,
MutexTimerIntervalSecs * 1000);
}
private void CleanupMutex()
{
if (_mutexTimer != null)
{
_mutexTimer.Dispose();
_mutexTimer = null;
}
if (_mutex != null)
{
Guid mutexValue = _mutex.Status.MutexValue;
_mutex = null;
if (mutexValue != Guid.Empty && _adminDatabaseAccessible)
{
_log.DebugFormat("Releasing mutex: {0}", mutexValue);
ControlMutex.Release(AdminConnectionString, Timeouts.AdminDatabase, mutexValue);
}
}
}
