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Joey Hess 2020-11-30 12:44:40 -04:00
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[[!comment format=mdwn
username="joey"
subject="""comment 2"""
date="2020-11-30T16:40:41Z"
content="""
Analysis: It's hanging on 'hClose hout'.
I think that's because there's a thread that is waiting for the next line
of output from the remote. hClose ends up taking a MVar, if the read
keeps that MVar unpopulate hClose can then hang. This is surprising; I've
never seen hClose hang, and the docs don't mention it can.
Solution will be to cleanly shutdown the async IO threads before shutting
down the external process.
"""]]