Comment by pjmlp

Which is what OSes implemented in system languages with automatic memory management usually do, it is an OS service.

Oberon example,

https://people.inf.ethz.ch/wirth/ProjectOberon/Sources/Kerne...

Active Oberon example,

https://github.com/btreut/a2/blob/master/source/GarbageColle...

Bare metal Java, Go, .NET, Erlang, OCaml,... with bare metal deployments naturally have the runtime take the OS role.