public int DecreaseReferenceCount(NFSFolderBranchNode node)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
lock (mapLock)
{
int count;
var map = this.refCountMap;
if (map.TryGetValue(node, out count))
{
if (--count == 0)
{
map.Remove(node);
}
else
{
map[node] = count;
}
}
return(count);
}
}
public bool HasReference(NFSFolderBranchNode node)
{
if (node == null)
{
throw new ArgumentNullException("node");
}
lock (mapLock)
return(this.refCountMap.ContainsKey(node));
}
public NFSFolderNodePair(NFSFolder folder, NFSFolderBranchNode node)
{
if (folder == null)
{
throw new ArgumentNullException("folder");
}
if (node == null)
{
throw new ArgumentNullException("node");
}
if (folder.Name != node.Name)
{
throw new ArgumentException("folder and node are mismatched");
}
this.folder = folder;
this.node = node;
}
