view contrib/showstack.py @ 36435:f449138a52df

py3: use email.generator module instead of email.Generator

On py2:

>>> import email
>>> import email.generator as emailgen
>>> email.Generator.Generator is emailgen.Generator
True

email.Generator is not present on Python 3.

Differential Revision: https://phab.mercurial-scm.org/D2454

# 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