view contrib/showstack.py @ 28706:b33ca687c1e3

revset: inline isvalidsymbol() and getsymbol() into _parsealiasdecl()

Since I'm going to extract a common alias parser, I want to eliminate
dependencies to the revset parsing rules. These functions are trivial,
so we can go without them.

# showstack.py - extension to dump a Python stack trace on signal
#
# binds to both 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