85185b61b6
* Per thread https://llvm.discourse.group/t/revisiting-ownership-and-lifetime-in-the-python-bindings/1769 * Reworks contexts so it is always possible to get back to a py::object that holds the reference count for an arbitrary MlirContext. * Retrofits some of the base classes to automatically take a reference to the context, elimintating keep_alives. * More needs to be done, as discussed, when moving on to the operations/blocks/regions. Differential Revision: https://reviews.llvm.org/D87886
43 lines
910 B
Python
43 lines
910 B
Python
# RUN: %PYTHON %s
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# Standalone sanity check of context life-cycle.
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import gc
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import mlir
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assert mlir.ir.Context._get_live_count() == 0
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# Create first context.
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print("CREATE C1")
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c1 = mlir.ir.Context()
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assert mlir.ir.Context._get_live_count() == 1
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c1_repr = repr(c1)
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print("C1 = ", c1_repr)
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print("GETTING AGAIN...")
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c2 = c1._get_context_again()
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c2_repr = repr(c2)
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assert mlir.ir.Context._get_live_count() == 1
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assert c1_repr == c2_repr
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print("C2 =", c2)
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# Make sure new contexts on constructor.
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print("CREATE C3")
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c3 = mlir.ir.Context()
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assert mlir.ir.Context._get_live_count() == 2
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c3_repr = repr(c3)
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print("C3 =", c3)
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assert c3_repr != c1_repr
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print("FREE C3")
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c3 = None
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gc.collect()
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assert mlir.ir.Context._get_live_count() == 1
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print("Free C1")
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c1 = None
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gc.collect()
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assert mlir.ir.Context._get_live_count() == 1
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print("Free C2")
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c2 = None
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gc.collect()
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assert mlir.ir.Context._get_live_count() == 0
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