public override ListItemData RunOnLinkedList(
LinkedListExecutionState state)
{
if (state.Current == null || state.Current.Value.IsDummy)
{
return(null);
}
ListItemData prevalentData = state.Current.Value.Data;
if (prevalentData.Value != oldValue)
{
return(prevalentData);
}
state.Current.Value =
state.Current.Value.NewWithData(
prevalentData.NewWithValue(newValue));
return(prevalentData);
}
public override ListItemData RunOnLfdll(LfdllExecutionState state)
{
if (state.Current == null || state.Current.IsDummyNode)
{
return(null);
}
ListItemData oldData = state.Current.Value;
while (true)
{
if (oldData.Value != oldValue)
{
return(oldData);
}
ListItemData prevalentData = state.Current.CompareExchangeValue(
oldData.NewWithValue(newValue), oldData);
if (ReferenceEquals(prevalentData, oldData))
{
return(prevalentData);
}
oldData = prevalentData;
}
}