TheRock/math-libs/libhipcxx/.upstream-tests/test/heterogeneous/atomic/flag.pass.cpp

//===----------------------------------------------------------------------===//
//
// Part of the libcu++ Project, 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
//
//===----------------------------------------------------------------------===//

// Modifications Copyright (c) 2025 Advanced Micro Devices, Inc.
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
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// UNSUPPORTED: nvrtc, hiprtc, pre-sm-60
// UNSUPPORTED: windows && pre-sm-70

#include <cuda/std/atomic>
#include <cuda/std/cassert>

#include "../helpers.h"

struct clear
{
  template <typename AF>
  __host__ __device__ static void initialize(AF& af)
  {
    af.clear();
  }
};

struct clear_tester : clear
{
  template <typename AF>
  __host__ __device__ static void validate(AF& af)
  {
    assert(af.test_and_set() == false);
  }
};

template <bool Previous>
struct test_and_set_tester
{
  template <typename AF>
  __host__ __device__ static void initialize(AF& af)
  {
    assert(af.test_and_set() == Previous);
  }

  template <typename AF>
  __host__ __device__ static void validate(AF& af)
  {
    assert(af.test_and_set() == true);
  }
};

using atomic_flag_testers = tester_list<clear_tester, clear, test_and_set_tester<false>, test_and_set_tester<true>>;

void kernel_invoker()
{
  validate_pinned<cuda::std::atomic_flag, atomic_flag_testers>();
}

int main(int argc, char** argv)
{
  NV_IF_TARGET(NV_IS_HOST, (kernel_invoker();))

  return 0;
}