public override V GetExtension(ConversionKey key)
{
Object extension = this.classEntry.Get(key);
if (extension == null)
{
Object writeLock = GetWriteLock();
lock (writeLock)
{
extension = this.classEntry.Get(key);
if (extension == null)
{
ClassTupleEntry <V> classEntry = CopyStructure();
classEntry.Put(key, alreadyHandled);
classEntry.typeToDefEntryMap.Put(key, alreadyHandled);
CheckToWeakRegisterExistingExtensions(key, classEntry);
this.classEntry = classEntry;
extension = classEntry.Get(key);
if (extension == null)
{
return(default(V));
}
}
}
}
if (Object.ReferenceEquals(extension, alreadyHandled))
{
// Already tried
return(default(V));
}
return((V)extension);
}
protected void TypeToDefEntryMapChanged(ClassTupleEntry <V> classEntry, ConversionKey key)
{
Object obj = classEntry.typeToDefEntryMap.Get(key);
if (obj == null)
{
classEntry.Remove(key);
return;
}
if (obj == alreadyHandled)
{
classEntry.Put(key, alreadyHandled);
return;
}
if (obj is Def2Entry <V> )
{
classEntry.Put(key, ((Def2Entry <V>)obj).extension);
return;
}
Def2Entry <V> firstDefEntry = ((InterfaceFastList <Def2Entry <V> >)obj).First.ElemValue;
classEntry.Put(key, firstDefEntry.extension);
}
