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  • Committer: Martin Pool
  • Date: 2006-02-21 22:30:22 UTC
  • mto: This revision was merged to the branch mainline in revision 1569.
  • Revision ID: mbp@sourcefrog.net-20060221223022-0d73c36b63fc9bcf
New LockDir.force_break and simple test case

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bzrlib/lockdir.py
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        self.transport.delete(tmpname + self.INFO_NAME)
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        self.transport.rmdir(tmpname)
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    def force_break(self):
 
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        """Release a lock held by another process.
 
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        WARNING: This should only be used when the other process is dead; if
 
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        it still thinks it has the lock there will be two concurrent writers.
 
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        In general the user's approval should be sought for lock breaks.
 
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        After the lock is broken it will not be held by any process.
 
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        It is possible that another process may sneak in and take the 
 
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        lock before the breaking process acquires it.
 
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        """
 
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        if self._lock_held:
 
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            raise AssertionError("can't break own lock: %r" % self)
 
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        tmpname = '%s.broken.%s.tmp' % (self.path, rand_chars(20))
 
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        self.transport.rename(self.path, tmpname)
 
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        self.transport.delete(tmpname + self.INFO_NAME)
 
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        self.transport.rmdir(tmpname)
 
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    def confirm(self):
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        """Make sure that the lock is still held by this locker.
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                time.sleep(poll)
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            else:
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                raise LockContention(self)
 
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