docker-offlineimap/offlineimap/ui/debuglock.py
2005-04-16 20:33:35 +01:00

50 lines
1.7 KiB
Python

# Locking debugging code -- temporary
# Copyright (C) 2003 John Goerzen
# <jgoerzen@complete.org>
#
# 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
from threading import *
import traceback
logfile = open("/tmp/logfile", "wt")
loglock = Lock()
class DebuggingLock:
def __init__(self, name):
self.lock = Lock()
self.name = name
def acquire(self, blocking = 1):
self.print_tb("Acquire lock")
self.lock.acquire(blocking)
self.logmsg("===== %s: Thread %s acquired lock\n" % (self.name, currentThread().getName()))
def release(self):
self.print_tb("Release lock")
self.lock.release()
def logmsg(self, msg):
loglock.acquire()
logfile.write(msg + "\n")
logfile.flush()
loglock.release()
def print_tb(self, msg):
self.logmsg(".... %s: Thread %s attempting to %s\n" % \
(self.name, currentThread().getName(), msg) + \
"\n".join(traceback.format_list(traceback.extract_stack())))