Method Print

deps/v8/tools/grokdump.py:1312–1353

(self, p)

    return self.heap.reader.ReadTagged(self.address + offset)

  def Print(self, p):
    p.Print("Map(%08x)" % (self.address))
    p.Print("  - size: %d, inobject: %d, (unused: %d), visitor: %d" % (
        self.ReadByte(self.InstanceSizeOffset()),
        self.ReadByte(self.InObjectProperties()),
        self.ReadByte(self.UnusedByte()),
        self.VisitorId()))

    instance_type = INSTANCE_TYPES[self.ReadByte(self.InstanceTypeOffset())]
    bitfield = self.ReadByte(self.BitFieldOffset())
    bitfield2 = self.ReadByte(self.BitField2Offset())
    unused = self.ReadByte(self.UnusedPropertyFieldsOffset())
    p.Print("  - %s, bf: %d, bf2: %d, unused: %d" % (
        instance_type, bitfield, bitfield2, unused))

    p.Print("  - kind: %s" % (self.Decode(3, 5, bitfield2)))

    bitfield3 = self.ReadSlot(self.BitField3Offset())

    p.Print(
        "  - EnumLength: %d NumberOfOwnDescriptors: %d OwnsDescriptors: %s" % (
            self.Decode(0, 10, bitfield3),
            self.Decode(10, 10, bitfield3),
            self.Decode(21, 1, bitfield3)))
    p.Print("  - DictionaryMap: %s" % (self.Decode(20, 1, bitfield3)))
    p.Print("  - Deprecated: %s" % (self.Decode(23, 1, bitfield3)))
    p.Print("  - IsUnstable: %s" % (self.Decode(24, 1, bitfield3)))
    p.Print("  - NewTargetIsBase: %s" % (self.Decode(27, 1, bitfield3)))

    descriptors = self.ObjectField(self.DescriptorsOffset())
    if descriptors.__class__ == FixedArray:
      DescriptorArray(descriptors).Print(p)
    else:
      p.Print("  - Descriptors: %s" % (descriptors))

    transitions = self.ObjectField(self.TransitionsOrPrototypeInfoOffset())
    if transitions.__class__ == FixedArray:
      TransitionArray(transitions).Print(p)
    else:
      p.Print("  - TransitionsOrPrototypeInfo: %s" % (transitions))

    p.Print("  - Prototype: %s" % self.ObjectField(self.PrototypeOffset()))

  def __init__(self, heap, map, address):
    HeapObject.__init__(self, heap, map, address)