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@@ -465,6 +465,10 @@ int __attribute__((warn_unused_result)) _starpu_driver_copy_data_1_to_1(starpu_d
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/* This can be used by interfaces to easily transfer a piece of data without
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* caring about the particular CUDA/OpenCL methods. */
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+/* This should either return 0 if the transfer is complete, or -EAGAIN if the
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+ * transfer is still pending, and will have to be waited for by
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+ * _starpu_driver_test_request_completion/_starpu_driver_wait_request_completion
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+ */
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int starpu_interface_copy(uintptr_t src, size_t src_offset, unsigned src_node, uintptr_t dst, size_t dst_offset, unsigned dst_node, size_t size, void *async_data)
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{
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#if defined(STARPU_USE_CUDA) || defined(STARPU_USE_OPENCL)
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