[Oberon] Safe module unloading

[Andreas Pirklbauer]

The solution to implement "completely safe module unloading" in the Oberon system has evolved somewhat since the last entry on this topic sometimes last year. I have been asked to make a comment about the changes made since then.

The updated implementation is contained entirely in two modules (Kernel, Modules) at https://github.com/andreaspirklbauer/Oberon-experimental, plus some tool commands in module System. A PDF doc explains the new implementation.

The implementation cost is as follows: ca 20 additional lines in module Kernel, and ca 200 additional lines in module Modules.

Best regards.Andreas


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