50 lines
1.7 KiB
Python
50 lines
1.7 KiB
Python
# Locking debugging code -- temporary
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# Copyright (C) 2003-2015 John Goerzen & contributors
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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
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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from threading import Lock, currentThread
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import traceback
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logfile = open("/tmp/logfile", "wt")
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loglock = Lock()
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class DebuggingLock:
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def __init__(self, name):
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self.lock = Lock()
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self.name = name
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def acquire(self, blocking=1):
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self.print_tb("Acquire lock")
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self.lock.acquire(blocking)
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self.logmsg("===== %s: Thread %s acquired lock\n" %
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(self.name, currentThread().getName()))
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def release(self):
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self.print_tb("Release lock")
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self.lock.release()
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def logmsg(self, msg):
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loglock.acquire()
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logfile.write(msg + "\n")
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logfile.flush()
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loglock.release()
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def print_tb(self, msg):
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self.logmsg(".... %s: Thread %s attempting to %s\n" %
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(self.name, currentThread().getName(), msg) +
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"\n".join(traceback.format_list(traceback.extract_stack())))
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