public IEnumerable <ulong> FindRefs(ulong targetObj)
{
var result = new HashSet <ulong>();
int targetChunk = _startOfChunkToChunkId[StartOfChunk(targetObj)];
int[] referencingChunks;
if (!_chunkToReferencingChunks.TryGetValue(targetChunk, out referencingChunks))
{
return(result);
}
foreach (var chunkId in referencingChunks)
{
ulong firstObj = _chunkIdToFirstNonFreeObjectInChunk[chunkId];
for (ulong current = firstObj;
current != 0 && current < firstObj + ((ulong)_chunkSize - firstObj % (ulong)_chunkSize);
current = _heap.NextObject(current))
{
var type = _heap.GetObjectType(current);
if (type == null || type.IsFree)
{
continue;
}
type.EnumerateRefsOfObject(current, (child, _) =>
{
if (child == targetObj)
{
result.Add(current);
}
});
}
}
return(result);
}
/// <summary> /// Returns the object after this one on the segment. /// </summary> /// <param name="obj">The object to find the next for.</param> /// <returns>The next object on the segment, or 0 if the object was the last one on the segment.</returns> /// <inheritdoc /> public ulong NextObject(ulong obj) => Heap.NextObject(obj);