Module mmtk::util::metadata::side_metadata

This module provides an implementation of side table metadata.

Modules

• constants 🔒
• global 🔒
• helpers 🔒
• ranges 🔒
  Data types for visiting metadata ranges at different granularities.
• sanity 🔒
• side_metadata_tests 🔒
• spec_defs 🔒

Structs

• MetadataByteArrayRef
  A byte array in side-metadata
• SideMetadataSpec
  This struct stores the specification of a side metadata bit-set. It is used as an input to the (inline) functions provided by the side metadata module.

Constants

• GLOBAL_SIDE_METADATA_BASE_ADDRESS
  Global side metadata start address
• GLOBAL_SIDE_METADATA_VM_BASE_ADDRESS
  The base address for the global side metadata space available to VM bindings, to be used for the per-object metadata. VM bindings must use this to avoid overlap with core internal global side metadata.
• GLOBAL_SIDE_METADATA_VM_BASE_OFFSET
  The base offset for the global side metadata available to VM bindings.
• LOCAL_SIDE_METADATA_VM_BASE_OFFSET
  The base address for the local side metadata space available to VM bindings, to be used for the per-object metadata. VM bindings must use this to avoid overlap with core internal local side metadata.
• VO_BIT_SIDE_METADATA_ADDR
  Base address of VO bit, public to VM bindings which may need to use this.

Unions

• SideMetadataOffset
  A union of Address or relative offset (usize) used to store offset for a side metadata spec. If a spec is contiguous side metadata, it uses address. Othrewise it uses usize.