public static MCTSNodeStore Restore(string directory, string id, bool clearSearchInProgressState = true)
{
// Read in miscellaneous information file
string miscInfoFN = Path.Combine(directory, id + FN_POSTFIX_MISC_INFO);
MCTSNodeStoreSerializeMiscInfo miscInfo = SysMisc.ReadObj <MCTSNodeStoreSerializeMiscInfo>(miscInfoFN);
MCTSNodeStore store = new MCTSNodeStore(miscInfo.NumNodesReserved);
store.Nodes.InsureAllocated(miscInfo.NumNodesAllocated);
store.RootIndex = miscInfo.RootIndex;
store.Nodes.Reset(miscInfo.PriorMoves, true);
long numNodes = SysMisc.ReadFileIntoSpan <MCTSNodeStruct>(Path.Combine(directory, id + FN_POSTFIX_NODES), store.Nodes.Span);
//store.Nodes.InsureAllocated((int)numNodes);
store.Nodes.nextFreeIndex = (int)numNodes;
store.Children.InsureAllocated((int)miscInfo.NumChildrenAllocated);
long numChildren = SysMisc.ReadFileIntoSpan <MCTSNodeStructChild>(Path.Combine(directory, id + FN_POSTFIX_CHILDREN), store.Children.Span);
if (numChildren > int.MaxValue)
{
throw new NotImplementedException("Implementation restriction: cannot read stores with number of children exceeding int.MaxValue.");
}
store.Children.nextFreeBlockIndex = (int)numChildren / MCTSNodeStructChildStorage.NUM_CHILDREN_PER_BLOCK;
if (clearSearchInProgressState)
{
// Reset the search state fields
MemoryBufferOS <MCTSNodeStruct> nodes = store.Nodes.nodes;
for (int i = 1; i < store.Nodes.NumTotalNodes; i++)
{
nodes[i].ResetSearchInProgressState();
}
}
return(store);
}
public static void Save(MCTSNodeStore store, string directory, string id)
{
if (store.Children.NumAllocatedChildren >= int.MaxValue)
{
throw new NotImplementedException("Implementation restriction: cannot write stores with number of children exceeding int.MaxValue.");
}
SysMisc.WriteSpanToFile(GetPath(directory, id, FN_POSTFIX_NODES), store.Nodes.Span.Slice(0, store.Nodes.NumTotalNodes));
SysMisc.WriteSpanToFile(GetPath(directory, id, FN_POSTFIX_CHILDREN), store.Children.Span.Slice(0, (int)store.Children.NumAllocatedChildren));
MCTSNodeStoreSerializeMiscInfo miscInfo = new MCTSNodeStoreSerializeMiscInfo()
{
Description = "",
PriorMoves = store.Nodes.PriorMoves,
RootIndex = store.RootIndex,
NumNodesReserved = store.MaxNodes,
NumNodesAllocated = store.Nodes.NumTotalNodes,
NumChildrenAllocated = store.Children.NumAllocatedChildren
};
SysMisc.WriteObj(GetPath(directory, id, FN_POSTFIX_MISC_INFO), miscInfo);
}