view contrib/showstack.py @ 51471:5633de951d34 stable

rust-matchers: raw regular expression builder Extracting this `re_builder()` from `re_matcher()` makes it reusable in more general cases than matching `HgPath` instances and would help reducing code duplication in RHGitaly.
author Georges Racinet <georges.racinet@octobus.net>
date Mon, 11 Mar 2024 13:36:25 +0100
parents 6000f5b25c9b
children
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# 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)
"""

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