view contrib/showstack.py @ 45670:a8fb29b05f92

salvaged: properly deal with salvaged file during copy tracing

When salvaged files are encountered, the removal have been reverted and we
should keep the rename information from the other side.

The conditional was starting to be quite hairy, so we spell it out in multiple
elif case for readability.

This fixes the associated test cases introduced a while back. The changeset centric copy tracing is now (known) bug free.

Differential Revision: https://phab.mercurial-scm.org/D9130

# 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