Deadlock of the process tree when running make
Thu Apr 7 21:53:31 GMT 2022
I'm using 32-bit Cygwin 3.3.4 on 64-bit Windows 10 21H2. When running
parallel make (for testing my project), very rarely I get the whole
process tree hanging at some seemingly random point. An example of such
(In the above tree, javac is the zombie parent of a native javac, and
the latter doesn't exist at this point).
I got such hang two times while running make in a loop for several days.
ProcessHacker shows that all leaf processes are single-threaded and are
stuck on WaitForSingleObject().
I've skimmed git log of cygwin-3_3-branch after cygwin-3_3_4-release,
but couldn't find anything that seems definitely related.
Has anybody seen something like this?
Is there any way I can get useful data for diagnosing this hang from the
process tree that I currently have hanging (I'm going to keep it for
now)? Otherwise, what would be the best strategy?
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