protected override bool keyEqual(TKey key, Boxed <TKey> entryKey)
{
//NOTE: slots are claimed in two stages - claim a hash, then set a key
// it is possible to observe a slot with a null key, but with hash already set
// that is not a match since the key is not yet in the table
return(entryKey != null && _keyComparer.Equals(key, entryKey.Value));
}
protected override bool TryClaimSlotForCopy(ref Boxed <TKey> entryKey, Boxed <TKey> key)
{
var entryKeyValue = entryKey;
if (entryKeyValue == null)
{
entryKeyValue = Interlocked.CompareExchange(ref entryKey, key, null);
if (entryKeyValue == null)
{
// claimed a new slot
this.allocatedSlotCount.Increment();
return(true);
}
}
return(_keyComparer.Equals(key.Value, entryKey.Value));
}
protected override TKey keyFromEntry(Boxed <TKey> entryKey)
{
return(entryKey.Value);
}