public void Dispose()
{
int size = Length;
Length = -1;
if (size > 0)
{
lock (SyncRoot) {
Allocated -= size;
if (size <= MaxSegmentSize)
{
FreeChunk prev = null;
FreeChunk next = Segment.FirstFreeChunk;
while (next != null && Index > next.Index)
{
prev = next;
next = next.NextInSegment;
}
if (prev == null || prev.Index + prev.Size != Index)
{
if (next != null && Index + size == next.Index)
{
next.Index = Index;
next.Size += size;
var nextNext = next.NextInSize;
if (nextNext != null && next.Size > nextNext.Size)
{
next.MoveAfterSizeHasIncreased();
}
}
else
{
new FreeChunk(Segment, prev, next, Index, size); // inserts itself into the lists
}
}
else
{
if (next != null && Index + size == next.Index)
{
prev.Size += size + next.Size;
next.Remove();
}
else
{
prev.Size += size;
}
if (prev.NextInSize != null && prev.Size > prev.NextInSize.Size)
{
prev.MoveAfterSizeHasIncreased();
}
}
Segment.AssertIntegrity();
var first = Segment.FirstFreeChunk;
if (first.Size == Segment.Size && ++NumberOfUnusedSegments > MaxNumberOfUnusedSegments)
{
--NumberOfUnusedSegments;
first.Remove();
Segment.Dispose();
}
}
else // size > MaxSegmentSize
{
Debug.Assert(size == Segment.Size);
Segment.Dispose();
}
}
}
}
