Module constants

Various constants used for Inspect.

Constants

• ARRAY_PAYLOAD_METADATA_SIZE_BYTES
  Length in bytes of metadata in the payload of an array block.
• DEFAULT_VMO_SIZE_BYTES
  Default number of bytes for the VMO: 256K
• EXPONENTIAL_HISTOGRAM_EXTRA_SLOTS
  Extra slots for an exponential histogram: 3 parameter slots (floor, initial step and step multiplier) and 2 overflow slots.
• HEADER_MAGIC_NUMBER
  Magic number for the Header block. “INSP” in UTF-8 little-endian.
• HEADER_ORDER
  The order of the header block.
• HEADER_SIZE_BYTES
  Size of the a VMO block header.
• HEADER_VERSION_NUMBER
  Version number for the Header block.
• LINEAR_HISTOGRAM_EXTRA_SLOTS
  Extra slots for a linear histogram: 2 parameter slots (floor, step size) and 2 overflow slots.
• MAX_ORDER_SHIFT
  The shift for order NUM_ORDERS-1 (the maximum order)
• MAX_ORDER_SIZE
  The size for order NUM_ORDERS-1 (the maximum order)
• MAX_VMO_SIZE
  Maximum size for a VMO: 256MB
• MINIMUM_VMO_SIZE_BYTES
  Minimum size for the VMO: 4K
• MIN_ORDER_SHIFT
  The shift for order 0.
• MIN_ORDER_SIZE
  The size for order 0.
• NUM_ORDERS
  Maximum number order of a block.
• PAGE_SIZE_BYTES
  Bytes per page
• STRING_REFERENCE_TOTAL_LENGTH_BYTES
  The number of bytes in the payload of a STRING_REFERENCE allotted to the total length.
• VMO_FROZEN
  This generation count indicates a VMO is frozen. It is even to allow creating an inspector that can write to the VMO.