private void BackgroundThreadMethodInner()
{
// Notify listeners that the algorithm is starting.
OnUpdateEvent();
_prevUpdateGeneration = 0;
_prevUpdateTimeTick = DateTime.UtcNow.Ticks;
for (;;)
{
_ea.PerformOneGeneration();
if (_isUpdateDueFn())
{
_prevUpdateGeneration = _ea.Stats.Generation;
_prevUpdateTimeTick = DateTime.UtcNow.Ticks;
OnUpdateEvent();
}
// Check if a pause has been requested.
// Note. Access to the flag is not thread synchronized, but it doesn't really matter if
// we miss it being set and perform one other generation before pausing.
if (_pauseRequestFlag || _ea.Stats.StopConditionSatisfied)
{
// Signal to any waiting thread that we are pausing.
_awaitPauseEvent.Set();
// Test for terminate signal.
if (_terminateFlag)
{
_runState = RunState.Terminated;
OnUpdateEvent();
return;
}
// Reset the pause flag, update RunState, and notify any listeners of the state change.
_pauseRequestFlag = false;
_runState = RunState.Paused;
OnUpdateEvent();
// Wait indefinitely for a signal to wake up and continue.
_awaitRestartEvent.WaitOne();
// Test for terminate signal.
if (_terminateFlag)
{
OnUpdateEvent();
return;
}
// Notify any listeners of the state change.
OnUpdateEvent();
}
}
}
private void AlgorithmThreadMethod()
{
try
{
_prevUpdateGeneration = 0;
_prevUpdateTimeTick = DateTime.Now.Ticks;
for (;;)
{
_currentGeneration++;
_ea.PerformOneGeneration();
if (UpdateTest())
{
_prevUpdateGeneration = _currentGeneration;
_prevUpdateTimeTick = DateTime.Now.Ticks;
OnUpdateEvent();
}
// Check if a pause has been requested.
// Access to the flag is not thread synchronized, but it doesn't really matter if
// we miss it being set and perform one other generation before pausing.
if (_pauseRequestFlag || _ea.EAStats.StopConditionSatisfied)
{
// Signal to any waiting thread that we are pausing
_awaitPauseEvent.Set();
// Test for terminate signal.
if (_terminateFlag)
{
return;
}
// Reset the flag. Update RunState and notify any listeners of the state change.
_pauseRequestFlag = false;
_runState = RunState.Paused;
OnUpdateEvent();
OnPausedEvent();
// Wait indefinitely for a signal to wake up and continue.
_awaitRestartEvent.WaitOne();
}
}
}
catch (ThreadAbortException)
{ // Quietly exit thread.
}
}