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# Copyright (C) 2006, Red Hat, Inc.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
import sys
import traceback
import os
import signal
haveThreadframe = True
try:
import threadframe
except ImportError:
haveThreadframe = False
class TracebackHelper(object):
def __init__(self):
fname = "%s-%d" % (os.path.basename(sys.argv[0]), os.getpid())
self._fpath = os.path.join("/tmp", fname)
print "Tracebacks will be written to %s on SIGUSR1" % self._fpath
signal.signal(signal.SIGUSR1, self._handler)
def __del__(self):
try:
os.remove(self._fpath)
except OSError:
pass
def _handler(self, signum, pframe):
f = open(self._fpath, "a")
if not haveThreadframe:
f.write("Threadframe not installed. No traceback available.\n")
else:
frames = threadframe.dict()
for thread_id, frame in frames.iteritems():
f.write(('-' * 79) + '\n')
f.write('[Thread %s] %d' % (thread_id, sys.getrefcount(frame)) + '\n')
traceback.print_stack(frame, limit=None, file=f)
f.write("\n")
f.write('\n')
f.close()
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