Confirmed that adding sleep to my text input thread resolves the issue. I don't get any significant behavioral change w/ closing STDIN, so I conclude that the issue is that <> blocks (waiting on input) while the main thread is blocked at async (waiting for a free control), resulting in a race condition whenever the IO thread receives a line. The *NIX box has an unfair advantage here since it's running off a quad core, thus it has enough control to allow three threads at once. Since my ultimate plan was replacing the STDIN reading thread with a GUI thread, I'll have to see how it behaves with regard to control issues (I'm seeing run-time thread safety determination in my future...).

Thanks so much for your help.

In reply to Re^2: threads on Windows by kennethk
in thread threads on Windows by kennethk

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