public RootLock(BPlusTree <TKey, TValue> tree, LockType type, bool exclusiveTreeAccess, string methodName)
{
tree.NotDisposed();
_tree = tree;
_type = type;
_version = type == LockType.Read ? tree._storage.CurrentVersion : null;
_methodName = methodName;
_exclusive = exclusiveTreeAccess;
_locked = _exclusive ? _tree._selfLock.TryWrite(tree._options.LockTimeout) : _tree._selfLock.TryRead(tree._options.LockTimeout);
LockTimeoutException.Assert(_locked);
try
{
Pin = _tree._storage.LockRoot(type);
}
catch
{
if (_exclusive)
{
_tree._selfLock.ReleaseWrite();
}
else
{
_tree._selfLock.ReleaseRead();
}
throw;
}
}
public Enumerator(BPlusTree <TKey, TValue> tree)
{
tree.NotDisposed();
_tree = tree;
_currentSet = new Element[_tree._options.MaximumValueNodes];
Reset();
}
public Enumerator(BPlusTree <TKey, TValue> tree, TKey startKey)
{
tree.NotDisposed();
_tree = tree;
_currentSet = new Element[_tree._options.MaximumValueNodes];
_hasStart = true;
_startKey = startKey;
Reset();
}