contrib/showstack.py
author Martin von Zweigbergk <martinvonz@google.com>
Fri, 08 Apr 2022 21:34:18 -0700
changeset 49095 b97835b2e2d4
parent 48875 6000f5b25c9b
permissions -rw-r--r--
rust-nodemap: remove unnecessary explicit lifetime Differential Revision: https://phab.mercurial-scm.org/D12486
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# showstack.py - extension to dump a Python stack trace on signal
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#
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# binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
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r"""dump stack trace when receiving SIGQUIT (Ctrl-\) or SIGINFO (Ctrl-T on BSDs)
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"""
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import signal
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import sys
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import traceback
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def sigshow(*args):
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    sys.stderr.write("\n")
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    traceback.print_stack(args[1], limit=10, file=sys.stderr)
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    sys.stderr.write("----\n")
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def sigexit(*args):
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    sigshow(*args)
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    print('alarm!')
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    sys.exit(1)
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def extsetup(ui):
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    signal.signal(signal.SIGQUIT, sigshow)
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    signal.signal(signal.SIGALRM, sigexit)
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    try:
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        signal.signal(signal.SIGINFO, sigshow)
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    except AttributeError:
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        pass