Oh, BTW, what are your thoughts for processes & threads with PCB+GL ? For my HE autorouter hack I have in mind to fork() off extra processes so that all of my CPU cores can run separate autorouter instances. As HE has an unbounded run time I'm thinking that the main PCB process should simply hang on to the UI to serve occasional display update requests from the other processes, and to kill off the auto routing processes on user command.
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