contrib/showstack.py
author Pierre-Yves David <pierre-yves.david@octobus.net>
Thu, 12 Dec 2019 18:11:44 +0100
changeset 44011 c627f1b2f3c3
parent 43076 2372284d9457
child 48875 6000f5b25c9b
permissions -rw-r--r--
rust-index: handle `MixedIndex` in `pyindex_to_graph` On the long run we will want to implement the Graph trait directly in Rust, but for now we take the path with the least amount of change to focus on the coming persistent NodeMap code. We test this new code through with the lazy ancestors code. Differential Revision: https://phab.mercurial-scm.org/D7657

# 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