view contrib/showstack.py @ 43411:a77338d2bdab stable

automation: avoid '~' in the temp directory on Windows

If a long-ish username is used, the environment variable ends up with a '~' to
be 8.3 path compatible.  That in turn causes a handful of tests (mostly ssh
related) to add quotes around $TESTMP.

I have no AWS experience, so I have no idea if this is the proper way to do it.
But I've hit this problem locally, and redirecting the directory is a
workaround.  I don't recall if the directory is created on demand by the test
harness, but presumably if this is configured before the machine boots, Windows
will do it for us.

Differential Revision: https://phab.mercurial-scm.org/D7130

# 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