class VM does Systemic { }

Built-in class for providing information about the virtual machine in which Raku is running. Usually accessed through the $*VM dynamic variable.

Methods

method osname

multi method osname(VM:U:)
    multi method osname(VM:D:)

Instance / Class method returning the name of the Operating System, as known by the configuration of the VM object / currently running virtual machine.

method precomp-ext

Instance method returning a string of the extension that should be used for precompiled files of the VM object.

method precomp-target

Instance method returning a string of the value of the compilation target that should be used when precompiling source-files with the VM object.

method prefix

Instance method returning a string of the path in which the virtual machine of the VM object is installed.

method request-garbage-collection

Available as of the 2020.05 release of the Rakudo compiler.

Class method that tells the virtual machine on which Raku is running, to perform a garbage collect run when possible. Issues a warning if such a request is not supported by the virtual machine.

Provides no guarantee that the process will actually use less memory after a garbage collect. In fact, calling this method repeatedly, may actually cause more memory to be used due to memory fragmentation.

Mainly intended as a debugging aid for module / core developers.