//===----------------------------------------------------------------------===//
//
// Part of the LLVM 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
// SPDX-FileCopyrightText: Copyright (c) 2023 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//

// 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
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// furnished to do so, subject to the following conditions:
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

// UNSUPPORTED: msvc-19.16
// UNSUPPORTED: nvrtc, hiprtc

// cuda::mr::async_resource

#include <cuda/memory_resource>
#include <cuda/std/cstdint>

#include "test_macros.h"

struct invalid_argument
{};

struct valid_resource
{
  void* allocate(std::size_t, std::size_t)
  {
    return nullptr;
  }
  void deallocate(void*, std::size_t, std::size_t) noexcept {}
  void* allocate_async(std::size_t, std::size_t, cuda::stream_ref)
  {
    return nullptr;
  }
  void deallocate_async(void*, std::size_t, std::size_t, cuda::stream_ref) {}
  bool operator==(const valid_resource&) const
  {
    return true;
  }
  bool operator!=(const valid_resource&) const
  {
    return false;
  }
};
static_assert(cuda::mr::async_resource<valid_resource>, "");

struct invalid_allocate_missing
{
  void deallocate(void*, std::size_t, std::size_t) noexcept {}
  void* allocate_async(std::size_t, std::size_t, cuda::stream_ref)
  {
    return nullptr;
  }
  void deallocate_async(void*, std::size_t, std::size_t, cuda::stream_ref) {}
  bool operator==(const invalid_allocate_missing&) const
  {
    return true;
  }
  bool operator!=(const invalid_allocate_missing&) const
  {
    return false;
  }
};
static_assert(!cuda::mr::async_resource<invalid_allocate_missing>, "");

struct invalid_deallocate_missing
{
  void* allocate(std::size_t, std::size_t)
  {
    return nullptr;
  }
  void* allocate_async(std::size_t, std::size_t, cuda::stream_ref)
  {
    return nullptr;
  }
  void deallocate_async(void*, std::size_t, std::size_t, cuda::stream_ref) {}
  bool operator==(const invalid_allocate_missing&) const
  {
    return true;
  }
  bool operator!=(const invalid_allocate_missing&) const
  {
    return false;
  }
};
static_assert(!cuda::mr::async_resource<invalid_deallocate_missing>, "");

struct invalid_allocate_async_argument
{
  void* allocate(std::size_t, std::size_t)
  {
    return nullptr;
  }
  void deallocate(void*, std::size_t, std::size_t) noexcept {}
  void* allocate_async(invalid_argument, std::size_t)
  {
    return nullptr;
  }
  void deallocate_async(void*, std::size_t, std::size_t, cuda::stream_ref) {}
  bool operator==(const invalid_allocate_async_argument&) const
  {
    return true;
  }
  bool operator!=(const invalid_allocate_async_argument&) const
  {
    return false;
  }
};
static_assert(!cuda::mr::async_resource<invalid_allocate_async_argument>, "");

struct invalid_allocate_async_return
{
  void* allocate(std::size_t, std::size_t)
  {
    return nullptr;
  }
  void deallocate(void*, std::size_t, std::size_t) noexcept {}
  int allocate_async(std::size_t, std::size_t, cuda::stream_ref)
  {
    return 42;
  }
  void deallocate_async(void*, std::size_t, std::size_t, cuda::stream_ref) {}
  bool operator==(const invalid_allocate_async_return&) const
  {
    return true;
  }
  bool operator!=(const invalid_allocate_async_return&) const
  {
    return false;
  }
};
static_assert(!cuda::mr::async_resource<invalid_allocate_async_return>, "");

struct invalid_deallocate_async_argument
{
  void* allocate(std::size_t, std::size_t)
  {
    return nullptr;
  }
  void deallocate(void*, std::size_t, std::size_t) noexcept {}
  void* allocate_async(std::size_t, std::size_t, cuda::stream_ref)
  {
    return nullptr;
  }
  void deallocate_async(void*, invalid_argument, std::size_t) {}
  bool operator==(const invalid_deallocate_async_argument&) const
  {
    return true;
  }
  bool operator!=(const invalid_deallocate_async_argument&) const
  {
    return false;
  }
};
static_assert(!cuda::mr::async_resource<invalid_deallocate_async_argument>, "");

struct non_comparable
{
  void* allocate(std::size_t, std::size_t)
  {
    return nullptr;
  }
  void deallocate(void*, std::size_t, std::size_t) noexcept {}
  void* allocate_async(std::size_t, std::size_t, cuda::stream_ref)
  {
    return nullptr;
  }
  void deallocate_async(void*, std::size_t, std::size_t, cuda::stream_ref) {}
};
static_assert(!cuda::mr::async_resource<non_comparable>, "");

struct non_eq_comparable
{
  void* allocate(std::size_t, std::size_t)
  {
    return nullptr;
  }
  void deallocate(void*, std::size_t, std::size_t) noexcept {}
  void* allocate_async(std::size_t, std::size_t, cuda::stream_ref)
  {
    return nullptr;
  }
  void deallocate_async(void*, std::size_t, std::size_t, cuda::stream_ref) {}
  bool operator!=(const non_eq_comparable&) const
  {
    return false;
  }
};
static_assert(!cuda::mr::async_resource<non_eq_comparable>, "");

#if TEST_STD_VER < 2020
struct non_neq_comparable
{
  void* allocate(std::size_t, std::size_t)
  {
    return nullptr;
  }
  void deallocate(void*, std::size_t, std::size_t) noexcept {}
  void* allocate_async(std::size_t, std::size_t, cuda::stream_ref)
  {
    return nullptr;
  }
  void deallocate_async(void*, std::size_t, std::size_t, cuda::stream_ref) {}
  bool operator==(const non_neq_comparable&) const
  {
    return true;
  }
};
static_assert(!cuda::mr::async_resource<non_neq_comparable>, "");
#endif // TEST_STD_VER < 2020

int main(int, char**)
{
  return 0;
}
