/// <summary>
/// Constructor to create a store of specified maximum size.
/// </summary>
/// <param name="maxNodes"></param>
/// <param name="priorMoves"></param>
public MCTSNodeStore(int maxNodes, PositionWithHistory priorMoves = null)
{
if (priorMoves == null)
{
priorMoves = PositionWithHistory.StartPosition;
}
MaxNodes = maxNodes;
int allocNodes = maxNodes;
Nodes = new MCTSNodeStructStorage(allocNodes, null,
MCTSParamsFixed.STORAGE_USE_INCREMENTAL_ALLOC,
MCTSParamsFixed.STORAGE_LARGE_PAGES,
MCTSParamsFixed.STORAGE_USE_EXISTING_SHARED_MEM);
long reserveChildren = maxNodes * (long)AVG_CHILDREN_PER_NODE;
Children = new MCTSNodeStructChildStorage(this, reserveChildren);
// Save a copy of the prior moves
Nodes.PriorMoves = new PositionWithHistory(priorMoves);
CeresEnvironment.LogInfo("NodeStore", "Init", $"MCTSNodeStore created with max {maxNodes} nodes, max {reserveChildren} children");
MCTSNodeStruct.ValidateMCTSNodeStruct();
RootIndex = new MCTSNodeStructIndex(1);
}
private bool disposedValue = false; // To detect redundant calls
/// <summary>
/// Disposes of the store, releasing all nodes and children.
/// </summary>
/// <param name="disposing"></param>
protected virtual void Dispose(bool disposing)
{
if (!disposedValue)
{
if (disposing)
{
// TODO: dispose managed state (managed objects).
}
Nodes?.Deallocate();
Nodes = null;
Children?.Deallocate();
Children = null;
disposedValue = true;
}
}