Stuart Sierra <the.stuart.sie...@gmail.com> writes:
> If your REPL implementation runs each command in a new Thread (as most
> of them do, I think) it can just stop the thread. That won't work in
> every situation (for example, a thread blocked waiting for I/O) but it
> will get you out of an infinite sequence.
For just a plain command-line REPL on unix you can try running this
before going into your infinite loop. Of course if something captures
the ThreadDeath exception then it's not going to work.
(sun.misc.Signal/handle
(sun.misc.Signal. "INT")
(let [t (Thread/currentThread)]
(proxy [sun.misc.SignalHandler] []
(handle [sig] (.stop t)))))
Here's what it looks like when you hit Ctrl+C:
user=> (while true)
^Cjava.lang.ThreadDeath (NO_SOURCE_FILE:0)
user=>
Under Emacs/Slime you can achieve the same thing by hitting C-c C-b
(or M-x slime-interrupt).
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