private bool TryGetSegmentMemoryRange(ClrSegment segment, GCGeneration generation, out ulong start, out ulong end)
{
start = 0;
end = 0;
switch (generation)
{
case GCGeneration.Generation0:
if (segment.IsEphemeralSegment)
{
start = segment.Generation0.Start;
end = segment.Generation0.End;
}
return(start != end);
case GCGeneration.Generation1:
if (segment.IsEphemeralSegment)
{
start = segment.Generation1.Start;
end = segment.Generation1.End;
}
return(start != end);
case GCGeneration.Generation2:
if (!(segment.IsLargeObjectSegment || segment.IsPinnedObjectSegment))
{
start = segment.Generation2.Start;
end = segment.Generation2.End;
}
return(start != end);
case GCGeneration.LargeObjectHeap:
if (segment.IsLargeObjectSegment)
{
start = segment.Start;
end = segment.End;
}
return(start != end);
case GCGeneration.PinnedObjectHeap:
if (segment.IsPinnedObjectSegment)
{
start = segment.Start;
end = segment.End;
}
return(start != end);
default:
return(false);
}
}
public IEnumerable <ClrObject> EnumerateObjectsInGeneration(GCGeneration generation)
{
foreach (var segment in _heap.Segments)
{
if (!TryGetSegmentMemoryRange(segment, generation, out var start, out var end))
{
continue;
}
var currentObjectAddress = start;
ClrObject currentObject;
do
{
currentObject = _heap.GetObject(currentObjectAddress);
if (currentObject.Type != null)
{
yield return(currentObject);
}
currentObjectAddress = segment.GetNextObjectAddress(currentObject);
} while (currentObjectAddress > 0 && currentObjectAddress < end);
}
}
public DumpGen(ClrMDHelper helper, GCGeneration generation)
{
_helper = helper;
_generation = generation;
}