class based singleton for SharedPool
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@@ -205,12 +205,13 @@ class ProcessPool(object):
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self._pool.release()
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return rv
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_instance = None
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def SharedPool():
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global _instance
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if _instance is None:
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_instance = ProcessPool()
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return _instance
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class SharedPool(object):
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_instance = None
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def __init__(self):
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if SharedPool._instance is None:
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self.__class__._instance = ProcessPool()
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def __getattr__(self, key):
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return getattr(self._instance, key)
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def simple_execute(cmd, **kwargs):
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return SharedPool().simple_execute(cmd, **kwargs)
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@@ -118,7 +118,7 @@ class ProcessTestCase(test.TrialTestCase):
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def test_shared_pool_is_singleton(self):
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pool1 = process.SharedPool()
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pool2 = process.SharedPool()
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self.assert_(id(pool1) == id(pool2))
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self.assertEqual(id(pool1._instance), id(pool2._instance))
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def test_shared_pool_works_as_singleton(self):
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d1 = process.simple_execute('sleep 1')
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