/// <summary>
/// Ctor with heap instance.
/// </summary>
/// <param name="heap">Instance of the heap secure with lock</param>
/// <exception cref="DdnDfException">When provided instance is null.</exception>
public LockBasedConcurrentHeap(IResizableHeap <T> heap) :
this(heap.ThrowIfNull($"{nameof(heap)} instance not provided."),
new object())
{
}
// for testing purpose
internal LockBasedConcurrentHeap(IResizableHeap <T> heap,
object syncRoot)
{
_heap = heap;
_syncRoot = syncRoot;
}
