internal override bool Arrive()
{
bool arrivedAtParent = false;
int x;
do
{
x = count;
if (x == 0 && !arrivedAtParent)
{
if (parent.Arrive())
{
arrivedAtParent = true;
}
else
{
return(false);
}
}
} while (Interlocked.CompareExchange(ref count, x + 1, x) != x);
if (arrivedAtParent && x != 0)
{
parent.Depart();
}
return(true);
}
public CSnziNode Arrive()
{
while (true)
{
if (root.State != CSnziState.Open)
{
return(null);
}
CSnziNode leaf = leafs[GetLeafIndex()];
if (leaf.Arrive())
{
return(leaf);
}
else
{
return(null);
}
}
}
