Module options

MMTk command line options.

Macros

• options 🔒

Structs

• MMTKOption
  An MMTk option of a given type. This type allows us to store some metadata for the option. To get the value of an option, you can simply dereference it (for example, *options.threads).
• Options
  Options for an MMTk instance. It affects many aspects of the behavior of the MMTk instance, including the number of GC worker threads, the GC plan to use, etc.
• PerfEventOptions
  MMTk option for perf events

Enums

• AffinityKind
  AffinityKind describes how to set the affinity of GC threads. Note that we currently assume that each GC thread is equivalent to an OS or hardware thread.
• GCTriggerSelector
  Select a GC trigger for MMTk.
• NurserySize
  An option that provides a min/max interface to MMTk and a Bounded/Fixed interface to the user/VM.
• NurseryZeroingOptions
  The zeroing approach to use for new object allocations. Affects each plan differently.
• PlanSelector
  Select a GC plan for MMTk.
• SetOptionByStringError 🔒
  Error when setting an option by option name and option value as strings.

Constants

• DEFAULT_MAX_NURSERY
  The default max nursery size. This does not affect the actual space we create as nursery. It is only used in the GC trigger check.
• DEFAULT_MAX_NURSERY_32
  The default max nursery size for 32 bits.
• DEFAULT_MIN_NURSERY
  The default min nursery size. This does not affect the actual space we create as nursery. It is only used in the GC trigger check.
• DEFAULT_PROPORTIONAL_MAX_NURSERY
  The default max nursery size proportional to the current heap size
• DEFAULT_PROPORTIONAL_MIN_NURSERY
  The default min nursery size proportional to the current heap size
• DEFAULT_STRESS_FACTOR
  The default stress factor. This is set to the max usize, which means we will never trigger a stress GC for the default value.

Functions

• always_valid 🔒