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[utils] Jython support: tolerate missing fcntl module
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@ -1217,13 +1217,23 @@ def _unlock_file(f):
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raise OSError('Unlocking file failed: %r' % ctypes.FormatError())
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raise OSError('Unlocking file failed: %r' % ctypes.FormatError())
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else:
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else:
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import fcntl
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# Some platforms, such as Jython, is missing fcntl
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try:
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import fcntl
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def _lock_file(f, exclusive):
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def _lock_file(f, exclusive):
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fcntl.flock(f, fcntl.LOCK_EX if exclusive else fcntl.LOCK_SH)
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fcntl.flock(f, fcntl.LOCK_EX if exclusive else fcntl.LOCK_SH)
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def _unlock_file(f):
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def _unlock_file(f):
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fcntl.flock(f, fcntl.LOCK_UN)
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fcntl.flock(f, fcntl.LOCK_UN)
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except ImportError:
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UNSUPPORTED_MSG = 'file locking is not supported on this platform'
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def _lock_file(f, exclusive):
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raise IOError(UNSUPPORTED_MSG)
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def _unlock_file(f):
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raise IOError(UNSUPPORTED_MSG)
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class locked_file(object):
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class locked_file(object):
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