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project_6/cccl_upstream/cudax/test/stf/freeze/token.cu

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//===----------------------------------------------------------------------===//
//
// Part of CUDASTF in CUDA C++ Core Libraries,
// under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
// SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
/**
* @file
*
* @brief Freeze token
*
*/
#include <cuda/experimental/stf.cuh>
using namespace cuda::experimental::stf;
int main()
{
context ctx;
auto ltoken = ctx.token();
auto ftoken = ctx.freeze(ltoken);
cudaStream_t stream = ctx.pick_stream();
// This makes any future operations in this CUDA stream depend on the
// availability of the token
[[maybe_unused]] auto dtoken = ftoken.get(data_place::current_device(), stream);
ftoken.unfreeze(stream);
ctx.finalize();
}