public virtual MruNode <V> Add(V item)
{
var node = new MruNode <V>(item, this);
try
{
SlimLock.EnterWriteLock();
node.Next = Head;
Tail = Tail ?? node;
if (Head != null)
{
Head.Previous = node;
}
Head = node;
ItemCount++;
if (ItemCount > Limit)
{
var deleted = Tail;
if (Tail != null)
{
Tail = Tail.Previous;
deleted.Erase();
}
ItemCount--;
}
}
finally
{
SlimLock.ExitWriteLock();
}
return(node);
}
public TValue ReadOrWrite(TKey key, Func <TValue> valueProvider)
{
TValue value = default(TValue);
if (!Dictionary.TryGetValue(key, out value))
{
try
{
if (SlimLock.TryEnterWriteLock(1000))
{
UpdateWaiting();
if (!Dictionary.TryGetValue(key, out value))
{
value = Dictionary.GetOrAdd(key, valueProvider());
}
}
else
{
throw new Exception("THIS IS CRAP");
}
}
finally
{
SlimLock.ExitWriteLock();
}
}
return(value);
}
public void Remove(TKey key)
{
try
{
SlimLock.EnterWriteLock();
TValue value;
Dictionary.TryRemove(key, out value);
}
finally
{
SlimLock.ExitWriteLock();
}
}
public virtual void Clear()
{
try
{
SlimLock.EnterWriteLock();
var node = Head;
while (node != null)
{
var old = node;
node = node.Next;
old.Erase();
}
ItemCount = 0;
Head = null;
Tail = null;
}
finally
{
SlimLock.ExitWriteLock();
}
}