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dc7d8a889e
Summary: Pull Request resolved: https://github.com/pytorch/pytorch/pull/48340 This changes the context managed classes from using a decorator to define them to using inheritance. Inheritance allows the python static type checking to work correctly. ``` context.define_context() class Bar(object): ... context.define_context(allow_default=True) class Foo(object): ... ``` becomes ``` class Foo(context.Managed): ... class Bar(context.DefaultManaged): ... ``` Behavior differences: * arg_name has been removed since it's not used anywhere * classes need to call `super()` in `__enter__/__exit__` methods if they override (none do) This also defines a context.pyi file to add types for python3. python2 support should not be affected Test Plan: ci buck test //caffe2/caffe2/python:context_test //caffe2/caffe2/python:checkpoint_test Reviewed By: dongyuzheng Differential Revision: D25133469 fbshipit-source-id: 16368bf723eeb6ce3308d6827f5ac5e955b4e29a
68 lines
1.8 KiB
Python
68 lines
1.8 KiB
Python
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from caffe2.python import context, test_util
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from threading import Thread
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class MyContext(context.Managed):
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pass
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class DefaultMyContext(context.DefaultManaged):
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pass
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class ChildMyContext(MyContext):
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pass
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class TestContext(test_util.TestCase):
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def use_my_context(self):
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try:
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for _ in range(100):
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with MyContext() as a:
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for _ in range(100):
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self.assertTrue(MyContext.current() == a)
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except Exception as e:
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self._exceptions.append(e)
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def testMultiThreaded(self):
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threads = []
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self._exceptions = []
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for _ in range(8):
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thread = Thread(target=self.use_my_context)
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thread.start()
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threads.append(thread)
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for t in threads:
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t.join()
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for e in self._exceptions:
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raise e
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@MyContext()
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def testDecorator(self):
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self.assertIsNotNone(MyContext.current())
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def testNonDefaultCurrent(self):
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with self.assertRaises(AssertionError):
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MyContext.current()
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ctx = MyContext()
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self.assertEqual(MyContext.current(value=ctx), ctx)
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self.assertIsNone(MyContext.current(required=False))
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def testDefaultCurrent(self):
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self.assertIsInstance(DefaultMyContext.current(), DefaultMyContext)
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def testNestedContexts(self):
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with MyContext() as ctx1:
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with DefaultMyContext() as ctx2:
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self.assertEqual(DefaultMyContext.current(), ctx2)
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self.assertEqual(MyContext.current(), ctx1)
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def testChildClasses(self):
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with ChildMyContext() as ctx:
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self.assertEqual(ChildMyContext.current(), ctx)
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self.assertEqual(MyContext.current(), ctx)
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