contrib/showstack.py
author Pierre-Yves David <pierre-yves.david@octobus.net>
Sat, 05 Dec 2020 23:27:57 +0100
changeset 46043 024f90fc01b5
parent 43076 2372284d9457
child 48875 6000f5b25c9b
permissions -rw-r--r--
phab-refresh: do not pick draft changeset from the bare "default" branch My initial test overlooked a common case: draft changeset on the default branch. So right now, heptapod is doing a final refresh of the patch with the landed version. This is not a bit problem except for the extra noise. However we would be better without the noise. Differential Revision: https://phab.mercurial-scm.org/D9522

# showstack.py - extension to dump a Python stack trace on signal
#
# binds to both SIGQUIT (Ctrl-\) and SIGINFO (Ctrl-T on BSDs)
r"""dump stack trace when receiving SIGQUIT (Ctrl-\) or SIGINFO (Ctrl-T on BSDs)
"""

from __future__ import absolute_import, print_function
import signal
import sys
import traceback


def sigshow(*args):
    sys.stderr.write("\n")
    traceback.print_stack(args[1], limit=10, file=sys.stderr)
    sys.stderr.write("----\n")


def sigexit(*args):
    sigshow(*args)
    print('alarm!')
    sys.exit(1)


def extsetup(ui):
    signal.signal(signal.SIGQUIT, sigshow)
    signal.signal(signal.SIGALRM, sigexit)
    try:
        signal.signal(signal.SIGINFO, sigshow)
    except AttributeError:
        pass