public IEnumerator <KeyValuePair <TKey, TItem> > GetEnumerator()
{
return(LockWrapper.ReadLock(_locker, Timeout, () =>
{
return _index.Where(t => t.Value.IsAlive).Select(t => new KeyValuePair <TKey, TItem>(t.Key, (TItem)t.Value.Target)).ToList().GetEnumerator();
}));
}
public void ClearIndex()
{
LockWrapper.WriteLock(_locker, Timeout, () =>
{
_index.Clear();
return(false);
});
}
public void Remove(TKey key)
{
LockWrapper.WriteLock(_locker, Timeout, () =>
{
_index.Remove(key);
return(false);
});
}
private Node GetNode(TKey key)
{
return(LockWrapper.ReadLock(_locker, Timeout, () =>
{
WeakReference value;
return (Node)(_index.TryGetValue(key, out value) ? value.Target : null);
}));
}
public void Add(TKey key, TItem item)
{
var node = _owner._lifeSpan.Add(item);
LockWrapper.WriteLock(_locker, Timeout, () =>
{
_index[key] = new WeakReference(node, false);
return(false);
});
}
public void RemoveRange(IEnumerable <TKey> set)
{
LockWrapper.WriteLock(_locker, Timeout, () =>
{
foreach (var key in set)
{
_index.Remove(key);
}
return(false);
});
}
public void AddRange(IEnumerable <KeyValuePair <TKey, TItem> > set)
{
LockWrapper.WriteLock(_locker, Timeout, () =>
{
foreach (var pair in set)
{
var node = _owner._lifeSpan.Add(pair.Value);
_index[pair.Key] = new WeakReference(node, false);
}
return(false);
});
}
public bool AddNode(Node node)
{
var item = node.Value as TItem;
if (item == null)
{
return(false);
}
TKey key = _getKey(item);
return(LockWrapper.WriteLock(_locker, Timeout, () =>
{
bool isDup = _index.ContainsKey(key);
_index[key] = new WeakReference(node, false);
return isDup;
}));
}
public int RebuildIndex()
{
return(LockWrapper.WriteLock(_locker, Timeout, () =>
{
_index.Clear();
foreach (var node in _owner._lifeSpan)
{
var item = node.Value as TItem;
if (item == null)
{
continue;
}
TKey key = _getKey(item);
_index[key] = new WeakReference(node, false);
}
return _index.Count;
}));
}
