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Viewing changes to build/lib/gozerbot/lockmanager.py

  • Committer: Bazaar Package Importer
  • Author(s): Jeremy Malcolm
  • Date: 2008-06-02 19:26:39 UTC
  • mfrom: (1.1.3 upstream) (3.1.1 lenny)
  • Revision ID: james.westby@ubuntu.com-20080602192639-3rn65nx4q1sgd6sy
Tags: 0.8.1-1
New upstream release.

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build/lib/gozerbot/lockmanager.py
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# gozerbot/lockmanager.py
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#
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#
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""" manages locks """
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__copyright__ = 'this file is in the public domain'
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from gozerbot.generic import rlog
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import thread
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class Lockmanager(object):
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    """ place to hold locks """
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    def __init__(self):
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        self.locks = {}
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    def allocate(self, name):
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        """ allocate a new lock """
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        name = name.lower()
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        self.locks[name] = thread.allocate_lock()
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        rlog(10, 'lockmanager', 'allocated %s' % name)
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    def get(self, name):
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        """ get lock """
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        name = name.lower()
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        if not self.locks.has_key(name):
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            self.allocate(name)
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        return self.locks[name]
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    def delete(self, name):
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        """ delete lock """
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        if self.locks.has_key(name):
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            del self.locks[name]
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    def acquire(self, name):
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        """ acquire lock """
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        name = name.lower()
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        if not self.locks.has_key(name):
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            self.allocate(name)
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        rlog(10, 'lockmanager', 'acquire %s' % name)
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        self.locks[name].acquire()
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    def release(self, name):
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        """ release lock """
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        name = name.lower()
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        rlog(10, 'lockmanager', 'releasing %s' % name)
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        self.locks[name].release()
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lockmanager = Lockmanager()