view contrib/showstack.py @ 52193:bda065f37f64 stable

tests: add a "missing" tests for manifest content in test-racy-mutations.t

Trying to figure out why the divergence in behavior on Windows.  The first test
shows everything is the same on all platforms; the second shows that the other
#testcase also diverges.  The difference might be that `00manifest.i` doesn't
get updated (and copied over) after `pre-race` is created, but I've no idea why
that would be either.

# 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