contrib/showstack.py
author Martin von Zweigbergk <martinvonz@google.com>
Tue, 03 Apr 2018 08:46:58 -0700
changeset 37301 a494cccb673e
parent 35656 c9eb92fb87b7
child 40037 acf5dbe39478
permissions -rw-r--r--
bookmarks: switch from repo.changectx('.') to repo['.'] The two forms are synonymous and the new form is by far the more common form. Differential Revision: https://phab.mercurial-scm.org/D3033

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

from __future__ import absolute_import
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 extsetup(ui):
    signal.signal(signal.SIGQUIT, sigshow)
    try:
        signal.signal(signal.SIGINFO, sigshow)
    except AttributeError:
        pass