public static void Heap(object @object)
{
EnsureRuntime();
var address = (ulong)GetHeapPointer(@object);
var objectType = _runtime.Heap.GetObjectType((ulong)GetHeapPointer(@object));
if (objectType == null)
{
throw new Exception($"Failed to find object type for address 0x{(ulong)GetHeapPointer(@object):X}.");
}
var objectSize = objectType.GetSize(address);
// Move by one pointer size back -- Object Header,
// see https://blogs.msdn.microsoft.com/seteplia/2017/05/26/managed-object-internals-part-1-layout/
//
// Not sure if there is a better way to get this through ClrMD yet.
// https://github.com/Microsoft/clrmd/issues/99
var objectStart = address - (uint)IntPtr.Size;
var data = ReadMemory(objectStart, objectSize);
var labels = CreateLabelsFromType(objectType, address, objectStart, first: (index: 2, offset: 2 * IntPtr.Size));
labels[0] = new MemoryInspectionLabel("header", 0, IntPtr.Size);
labels[1] = new MemoryInspectionLabel("type handle", IntPtr.Size, IntPtr.Size);
Output.Write(new MemoryInspection($"{objectType.Name} at 0x{address:X}", labels, data));
}
private void SerializeMemoryInspectionLabel(IFastJsonWriter writer, MemoryInspectionLabel label)
{
writer.WriteStartObject();
writer.WriteProperty("name", label.Name);
writer.WriteProperty("offset", label.Offset);
writer.WriteProperty("length", label.Length);
if (label.Nested.Count > 0)
{
writer.WritePropertyStartArray("nested");
foreach (var nested in label.Nested)
{
SerializeMemoryInspectionLabel(writer, nested);
}
writer.WriteEndArray();
}
writer.WriteEndObject();
}
private void WriteMemoryLabel(Utf8JsonWriter writer, MemoryInspectionLabel label)
{
writer.WriteStartObject();
writer.WriteString(Name, label.Name);
writer.WriteNumber(Offset, label.Offset);
writer.WriteNumber(Length, label.Length);
if (label.Nested.Count > 0)
{
writer.WriteStartArray(Nested);
foreach (var nested in label.Nested)
{
WriteMemoryLabel(writer, nested);
}
writer.WriteEndArray();
}
writer.WriteEndObject();
}
public MemoryInspection InspectHeap(object @object)
{
if (@object == null)
{
throw new ArgumentNullException(nameof(@object), $"Inspect.Heap can't inspect null, as it does not point to a valid location on the heap.");
}
using var runtimeLease = _runtimePool.GetOrCreate();
var runtime = runtimeLease.Object;
runtime.FlushCachedData();
var address = (ulong)GetHeapPointer(@object);
var objectType = runtime.Heap.GetObjectType(address);
if (objectType == null)
{
throw new ClrInformationNotFoundException($"Failed to find object type for address 0x{address:X}.");
}
var objectSize = runtime.Heap.GetObjectSize(address, objectType);
// Move by one pointer size back -- Object Header,
// see https://blogs.msdn.microsoft.com/seteplia/2017/05/26/managed-object-internals-part-1-layout/
//
// Not sure if there is a better way to get this through ClrMD yet.
// https://github.com/Microsoft/clrmd/issues/99
var objectStart = address - (uint)IntPtr.Size;
var data = ReadMemory(runtime, objectStart, objectSize);
var labels = CreateLabelsFromType(objectType, address, objectStart, first: (index: 2, offset: 2 * IntPtr.Size));
labels[0] = new MemoryInspectionLabel("header", 0, IntPtr.Size);
labels[1] = new MemoryInspectionLabel("type handle", IntPtr.Size, IntPtr.Size);
return(new MemoryInspection($"{objectType.Name} at 0x{address:X}", labels, data));
}
