~bzr-pqm/bzr/bzr.dev

2423.3.4 by Martin Pool
Late load pdb for breakin; fix copyright
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# Copyright (C) 2006, 2007 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
4183.7.1 by Sabin Iacob
update FSF mailing address
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
2423.3.1 by Martin Pool
C-\ drops bzr into the debugger
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2423.3.7 by Martin Pool
Add BZR_SIGQUIT_PDB=0 option to disable breakin.
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import os
2423.3.5 by Martin Pool
Second sigquit goes through to the default handler
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import signal
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2423.3.1 by Martin Pool
C-\ drops bzr into the debugger
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def _debug(signal_number, interrupted_frame):
2423.3.4 by Martin Pool
Late load pdb for breakin; fix copyright
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    import pdb
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    import sys
2423.3.1 by Martin Pool
C-\ drops bzr into the debugger
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    sys.stderr.write("** SIGQUIT received, entering debugger\n"
2423.3.5 by Martin Pool
Second sigquit goes through to the default handler
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            "** Type 'c' to continue or 'q' to stop the process\n"
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            "** Or SIGQUIT again to quit (and possibly dump core)\n"
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            )
2423.3.7 by Martin Pool
Add BZR_SIGQUIT_PDB=0 option to disable breakin.
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    # restore default meaning so that you can kill the process by hitting it
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    # twice
2423.3.5 by Martin Pool
Second sigquit goes through to the default handler
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    signal.signal(signal.SIGQUIT, signal.SIG_DFL)
2423.3.7 by Martin Pool
Add BZR_SIGQUIT_PDB=0 option to disable breakin.
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    try:
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        pdb.set_trace()
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    finally:
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        signal.signal(signal.SIGQUIT, _debug)
2423.3.5 by Martin Pool
Second sigquit goes through to the default handler
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2423.3.1 by Martin Pool
C-\ drops bzr into the debugger
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def hook_sigquit():
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    # when sigquit (C-\) is received go into pdb
2453.1.1 by Alexander Belchenko
explicitly check for SIGQUIT in 'signal' stdlib module (it's absent on win32)
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    if (os.environ.get('BZR_SIGQUIT_PDB', '1') == '0'
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        or getattr(signal, 'SIGQUIT', None) is None):
2423.3.7 by Martin Pool
Add BZR_SIGQUIT_PDB=0 option to disable breakin.
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        return
2423.3.1 by Martin Pool
C-\ drops bzr into the debugger
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    signal.signal(signal.SIGQUIT, _debug)