Class

for ast.c

The RubyVM module only exists on MRI. RubyVM is not defined in other Ruby implementations such as JRuby and TruffleRuby.

The RubyVM module provides some access to MRI internals. This module is for very limited purposes, such as debugging, prototyping, and research. Normal users must not use it. This module is not portable between Ruby implementations.

Constants

::RubyVM::OPTS An Array of VM build options. This constant is MRI specific.

::RubyVM::INSTRUCTION_NAMES A list of bytecode instruction names in MRI. This constant is MRI specific.

::RubyVM::DEFAULT_PARAMS This constant exposes the VM’s default parameters. Note that changing these values does not affect VM execution. Specification is not stable and you should not depend on this value. Of course, this constant is MRI specific.

Class Methods
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Returns a Hash containing implementation-dependent counters inside the VM.

This hash includes information about method/constant cache serials:

{
  :global_constant_state=>481,
  :class_serial=>9029
}

The contents of the hash are implementation specific and may be changed in the future.

This method is only expected to work on C Ruby.