public void checkStateAndGetTree(out RbTree tree, out error err)
{
tree = null;
err = null;
lock (this.mtx)
{
switch ((IterationState)this.state)
{
case IterationState.iteratorWalking:
err = ErrorDef.ErrIteratorAlreadyRunning;
return;
case IterationState.iteratorClosed:
err = ErrorDef.ErrIteratorClosed;
return;
case IterationState.iteratorUninitialized:
err = ErrorDef.ErrIteratorUninitialized;
return;
case IterationState.iteratorReady:
this.count = 0;
this.state = (long)IterationState.iteratorWalking;
break;
}
if (this.tree == null)
{
err = ErrorDef.ErrIteratorClosed;
return;
}
}
tree = this.tree;
}
public void Close()
{
lock (this.mtx)
{
this.state = (long)IterationState.iteratorClosed;
this.callback = nilIterationCallback;
this.tree = null;
}
}