Re: [Sbcl-devel] Atomic load.

[Jan M. <jmo...@te...>]

On 01/31/2016 03:45 PM, Dmitry Igrishin wrote:

> Obviously I mean a side effects which affects Lisp image only.

A more feasible and principled approach than performing and subsequently
undoing side effects in the Lisp image would be the introduction of
additional global environments. Robert Strandh (beach in #lisp) is
exploring this approach in his SICL implementation of Common Lisp. SBCL
currently only has one global environment.

Creating a new global environment, loading things into it and
potentially discarding the environment would roughly correspond to the
kind of rollback you are asking for.

Kind regards,
Jan