Author vstinner
Recipients db3l, gregory.p.smith, pitrou, rnk, sable, vstinner
Date 2011-02-17.10:55:13
SpamBayes Score 2.3215e-06
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Message-id <1297940114.36.0.174119480095.issue11223@psf.upfronthosting.co.za>
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> Here is what faulthandler reports when I trigger it as Python
> is locked in test_socket:
> ...
>  File ".../Lib/test/fork_wait.py", line 30 in f

faulthandler doesn't print the source code line (yet?). Here is the code:

class ForkWait(unittest.TestCase):
    ...
    def f(self, id):
        while not self.stop:
            self.alive[id] = os.getpid()
            try:
                time.sleep(SHORTSLEEP) <~~~ here
            except IOError:
                pass

ForkWait.f() is used by ForkWait.test_wait() which creates 4 threads. You may use all_threads=True option of faulthandler to get the backtrace of all threads.

Because ForkWait.test_wait() uses fork, you may also need to dump the backtrace of two processes.

Debug threads+multiple processes is something horrible :-)
History
Date User Action Args
2011-02-17 10:55:14vstinnersetrecipients: + vstinner, gregory.p.smith, db3l, pitrou, sable, rnk
2011-02-17 10:55:14vstinnersetmessageid: <1297940114.36.0.174119480095.issue11223@psf.upfronthosting.co.za>
2011-02-17 10:55:13vstinnerlinkissue11223 messages
2011-02-17 10:55:13vstinnercreate