private void OpStateChange(OpStateFlag newOpState)
{
lock (opStateLock)
{
opState = newOpState;
}
}
public Modeling(int height, int width)
{
requests = new Queue();
opStateLock = new object();
nodes = new ArrayList();
updates = new Queue();
loopMin = 100;
LoadNodesGrid(height, width);
System.Random randGen =
new Random(unchecked ((int)System.DateTime.Now.Ticks));
foreach (Node node in nodes)
{
//random activity
node.IsActive = Convert.ToBoolean(randGen.Next(2));
}
//activation values corresponding to Conway's Life
this.activationValues =
new ArrayList(new double[3] {
0.28D, 0.36D, 0.40D
});
foreach (Node node in nodes)
{
updates.Enqueue(node);
}
modelingThread = new Thread(
new ThreadStart(this.ModelingThreadEntryPoint)
);
modelingThread.Name = "modelingThread";
opState = OpStateFlag.Starting;
RequestPause();
modelingThread.Start();
}
private void ProcessRequests()
{
lock (requests)
{
//while OpState request has not been satisfied, it is possible
//that while waiting in paused mode, we may be awoken to find
//a new request or multiple requests may be made before
//ProcessRequests is called.
while (requests.Count > 0)
{
if (requests.Peek() is OpStateFlag)
{
OpStateFlag request = (OpStateFlag)requests.Dequeue();
switch (request)
{
case OpStateFlag.Paused:
opState = OpStateFlag.Paused;
//if there are still requests remaining, then
//we should set state to pause, but continue
//processing requests since there will likely
//be requests for TimeStepping or Updating which
//would normally cancel a pause.
if (requests.Count == 0)
{
Monitor.Wait(requests);
}
break;
case OpStateFlag.Updating:
opState = OpStateFlag.Updating | opState;
ProcessUpdate();
if (requests.Count == 0)
{
requests.Enqueue(
(~OpStateFlag.Updating) & opState);
break;
}
else
{
opState = ((~OpStateFlag.Updating) & opState);
}
break;
case OpStateFlag.TimeStepping:
opState = OpStateFlag.TimeStepping;
break;
case OpStateFlag.Exiting:
opState = OpStateFlag.Exiting;
break;
default:
Console.WriteLine
("Error, default reached in ProcessRequest");
break;
}
}
//add else if statement for other object types in queue
}
}
}
