/// <inheritdoc/>
protected override void GetEdgeAndNextIndex(int currentIndex, out Edge edge, out int nextIndex, bool isIncoming)
{
LinkedEdgeSetItem item = m_edgeSetBuffer[currentIndex];
if (isIncoming)
{
edge = item.TargetEdge;
nextIndex = item.NextTargetIncomingEdgeIndex;
}
else
{
edge = item.SourceEdge;
nextIndex = item.NextSourceOutgoingEdgeIndex;
}
}
private bool AddEdgeUnchecked(
NodeId source,
NodeId target,
BufferPointer <NodeEdgeListHeader> targetInEdges,
bool isLight,
bool bulkAddingTargetIncoming)
{
BufferPointer <NodeEdgeListHeader> outEdges = OutEdges.GetBufferPointer(source.Value);
var edgeSetItem = new LinkedEdgeSetItem(source, target, isLight);
int index = 0;
if (!bulkAddingTargetIncoming)
{
ConcurrentBigSet <LinkedEdgeSetItem> .GetAddOrUpdateResult result =
m_edgeSet.GetOrAdd(edgeSetItem);
if (result.IsFound)
{
// Edge already existed
return(false);
}
index = result.Index;
}
else
{
index = m_edgeSet.ReservedNextIndex(m_edgeSetBuffer);
m_edgeSetBuffer[index] = edgeSetItem;
}
// Update head index for in edges and out edges
int inEdgesNext = Interlocked.Exchange(ref targetInEdges.Buffer[targetInEdges.Index].FirstIndex, index);
int outEdgesNext = Interlocked.Exchange(ref outEdges.Buffer[outEdges.Index].FirstIndex, index);
var linkedEdgeSetItemPtr = m_edgeSetBuffer.GetBufferPointer(index);
// Update next pointers
linkedEdgeSetItemPtr.Buffer[linkedEdgeSetItemPtr.Index].NextTargetIncomingEdgeIndex = inEdgesNext;
linkedEdgeSetItemPtr.Buffer[linkedEdgeSetItemPtr.Index].NextSourceOutgoingEdgeIndex = outEdgesNext;
Interlocked.Increment(ref m_edgeCount);
// Update edge counts
targetInEdges.Buffer[targetInEdges.Index].InterlockedIncrementCount();
outEdges.Buffer[outEdges.Index].InterlockedIncrementCount();
return(true);
}