~bzr-pqm/bzr/bzr.dev

Viewing changes to bzrlib/breakin.py

Press C-\ to break into pdb

added added

removed removed

# This program is free software; you can redistribute it and/or modify

# it under the terms of the GNU General Public License as published by

# the Free Software Foundation; either version 2 of the License, or

# (at your option) any later version.

# This program is distributed in the hope that it will be useful,

# but WITHOUT ANY WARRANTY; without even the implied warranty of

# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

# GNU General Public License for more details.

# You should have received a copy of the GNU General Public License

# along with this program; if not, write to the Free Software

# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

import os

import signal

def _debug(signal_number, interrupted_frame):

import pdb

import sys

sys.stderr.write("** SIGQUIT received, entering debugger\n"

"** Type 'c' to continue or 'q' to stop the process\n"

"** Or SIGQUIT again to quit (and possibly dump core)\n"

)

# restore default meaning so that you can kill the process by hitting it

# twice

signal.signal(signal.SIGQUIT, signal.SIG_DFL)

try:

pdb.set_trace()

finally:

signal.signal(signal.SIGQUIT, _debug)

def hook_sigquit():

# when sigquit (C-\) is received go into pdb

# XXX: is this meaningful on Windows?

if os.environ.get('BZR_SIGQUIT_PDB', '1') == '0':

return

signal.signal(signal.SIGQUIT, _debug)