public bool Touch(ITtReference <TValue> @ref)
{
bool touched = _lruTt.Touch(@ref) || _depthTt.Touch(@ref);
Debug.Assert(touched);
return(touched);
}
public bool Update(ITtReference <TValue> @ref, TValue newValue)
{
if (!(@ref is LruNode <TValue> node) || node.HasExpired)
{
throw new ArgumentException("", nameof(@ref));
}
if (Touch(node))
{
node.Value = newValue;
return(true);
}
return(false);
}
public bool Touch(ITtReference <TValue> @ref)
{
if (!(@ref is LruNode <TValue> node) || node.HasExpired)
{
throw new ArgumentException("", nameof(@ref));
}
if (_dict.TryGetValue(node.Key, out var dictNode) && ReferenceEquals(node, dictNode))
{
Log.Debug("(lru) Node {0} was hit, moving to top of cache", node);
node.Remove();
_nodes.AddToTop(node);
return(true);
}
return(false); // node isn't from here or got evicted
}
public bool Update(ITtReference <TValue> @ref, TValue newValue)
{
if (!(@ref is LruNode <TValue> node) || node.HasExpired)
{
throw new ArgumentException("", nameof(@ref));
}
if (Touch(node))
{
var(oldDepth, newDepth) = (node.Value.Depth, newValue.Depth);
Debug.Assert(newDepth >= oldDepth); // so we don't have to worry about updating _minDepth
node.Value = newValue;
// we also have to move the node to the appropriate list if its depth has changed
if (newDepth > oldDepth)
{
node.Remove();
EnsureDepth(newDepth);
_lists[newDepth].AddToTop(node);
}
return(true);
}
return(false);
}
public bool Update(ITtReference <TValue> @ref, TValue newValue)
{
return(_lruTt.Update(@ref, newValue) || _depthTt.Update(@ref, newValue));
}