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[CCCL] 瘦身 + 补全: 移除 cudax/python/libcudacxx-tests 冗余文件, 新增 c2h 测试助手 + cmake 构建系统 + 8 个 CUDA thrust examples

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变更摘要:
- 删除: cudax/ (783 files, 7.2M) — 实验性组件，竞赛不需要
- 删除: python/ (226 files, 2.0M) — Python 绑定，竞赛不需要
- 删除: libcudacxx/{test,benchmarks,codegen,cmake,share} (4432 files, 31M)
  保留: libcudacxx/include/ (1463 headers, cuda::std 编译依赖)
- 新增: c2h/ (27 files) — CUB Catch2 测试辅助头文件，编译 243 个测试必需
- 新增: cmake/ (29 files) — CCCL 原生 CMake 构建系统
- 新增: thrust/examples/cuda/ (7 files) + cpp_integration/ (1 file)
  async_reduce, custom_temporary_allocation, explicit_cuda_stream,
  global_device_vector, range_view, unwrap_pointer, wrap_pointer, device

结果: cccl_upstream 从 74M→35M (瘦身 53%), 核心内容 100% 保留:
  27/27 tuning headers, 78 benchmarks, 243 tests,
  60 thrust examples, 18 CUB examples, 全部编译头文件
This commit is contained in:
muh-bot
2026-08-03 12:39:26 +00:00
parent a2a5dd8f00
commit 24ef6a91b5
5439 changed files with 0 additions and 719516 deletions
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224
cccl_upstream/cudax/test/cufile/cufile.cu
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//===----------------------------------------------------------------------===//
//
// Part of CUDA Experimental 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) 2025 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#include <cuda/std/type_traits>
#include <cuda/std/utility>
#include <cuda/experimental/cufile.cuh>
#include <cstdio>
#include <testing.cuh>
#include <unistd.h>
#include "common.h"
#if _CCCL_COMPILER(GCC, >=, 13)
_CCCL_DIAG_SUPPRESS_GCC("-Wself-move")
#endif // _CCCL_COMPILER(GCC, >=, 13)
_CCCL_DIAG_SUPPRESS_CLANG("-Wself-move")
// todo: test error states and resetting errno
C2H_CCCLRT_TEST("cuFile cufile", "[cufile][cufile]")
{
constexpr auto filename = "cufile_test_file";
// 1. Test public cufile types and properties.
STATIC_REQUIRE(cuda::std::is_base_of_v<cudax::cufile_ref, cudax::cufile>);
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile::off_type, ::off_t>);
STATIC_REQUIRE(cuda::std::is_same_v<cudax::cufile::native_handle_type, int>);
// 2. Test default constructor.
STATIC_REQUIRE(cuda::std::is_nothrow_default_constructible_v<cudax::cufile>);
{
cudax::cufile file;
REQUIRE(file.get() == nullptr);
REQUIRE(file.native_handle() == -1);
}
// 3. Test cufile(const char*, cufile_open_mode) constructor.
STATIC_REQUIRE(cuda::std::is_constructible_v<cudax::cufile, const char*, cudax::cufile_open_mode>);
{
cudax::cufile file{filename, cudax::cufile_open_mode::out};
REQUIRE(file.get() != nullptr);
test_check_fd_is_valid(file.native_handle());
test_check_file_exists(filename);
// todo: test different open flags
}
test_remove_file(filename);
// 4. Test copy constructor.
STATIC_REQUIRE(!cuda::std::is_copy_constructible_v<cudax::cufile>);
// 5. Test move constructor.
STATIC_REQUIRE(cuda::std::is_nothrow_move_constructible_v<cudax::cufile>);
{
cudax::cufile file1{filename, cudax::cufile_open_mode::out};
test_check_file_exists(filename);
cudax::cufile file2{cuda::std::move(file1)};
REQUIRE(file1.get() == nullptr);
REQUIRE(file1.native_handle() == -1);
REQUIRE(file2.get() != nullptr);
test_check_fd_is_valid(file2.native_handle());
}
test_remove_file(filename);
// 6. Test copy assignment.
STATIC_REQUIRE(!cuda::std::is_copy_assignable_v<cudax::cufile>);
// 7. Test move assignment.
STATIC_REQUIRE(cuda::std::is_move_assignable_v<cudax::cufile>);
{
cudax::cufile file2;
{
cudax::cufile file1{filename, cudax::cufile_open_mode::out};
// self move assignment
file1 = cuda::std::move(file1);
REQUIRE(file1.get() != nullptr);
test_check_fd_is_valid(file1.native_handle());
test_check_file_exists(filename);
// move assignment
file2 = cuda::std::move(file1);
REQUIRE(file1.get() == nullptr);
REQUIRE(file1.native_handle() == -1);
REQUIRE(file2.get() != nullptr);
test_check_fd_is_valid(file2.native_handle());
}
test_check_file_exists(filename);
}
test_remove_file(filename);
// 8. Test destructor.
STATIC_REQUIRE(cuda::std::is_nothrow_destructible_v<cudax::cufile>);
// 9. Test is_open().
STATIC_REQUIRE(noexcept(cuda::std::declval<cudax::cufile>().is_open()));
STATIC_REQUIRE(cuda::std::is_same_v<bool, decltype(cuda::std::declval<cudax::cufile>().is_open())>);
{
cudax::cufile file;
REQUIRE(!file.is_open());
file = cudax::cufile{filename, cudax::cufile_open_mode::out};
test_check_file_exists(filename);
REQUIRE(file.is_open());
}
test_remove_file(filename);
// 10. Test open_mode().
STATIC_REQUIRE(!noexcept(cuda::std::declval<cudax::cufile>().open_mode()));
STATIC_REQUIRE(
cuda::std::is_same_v<cudax::cufile_open_mode, decltype(cuda::std::declval<cudax::cufile>().open_mode())>);
{
cudax::cufile file;
REQUIRE(file.open_mode() == cudax::cufile_open_mode{});
file = cudax::cufile{filename, cudax::cufile_open_mode::out};
test_check_file_exists(filename);
REQUIRE(file.open_mode() == cudax::cufile_open_mode::out);
// todo: test other flags
}
test_remove_file(filename);
// 11. Test open().
STATIC_REQUIRE(!noexcept(cuda::std::declval<cudax::cufile>().open(
cuda::std::declval<const char*>(), cuda::std::declval<cudax::cufile_open_mode>())));
STATIC_REQUIRE(
cuda::std::is_same_v<void,
decltype(cuda::std::declval<cudax::cufile>().open(
cuda::std::declval<const char*>(), cuda::std::declval<cudax::cufile_open_mode>()))>);
{
cudax::cufile file;
REQUIRE(!file.is_open());
file.open(filename, cudax::cufile_open_mode::out);
REQUIRE(file.get() != nullptr);
test_check_fd_is_valid(file.native_handle());
test_check_file_exists(filename);
REQUIRE(file.is_open());
CHECK_THROWS_AS(file.open(filename, cudax::cufile_open_mode::out), std::runtime_error);
}
test_remove_file(filename);
// 12. Test close().
STATIC_REQUIRE(!noexcept(cuda::std::declval<cudax::cufile>().close()));
STATIC_REQUIRE(cuda::std::is_same_v<void, decltype(cuda::std::declval<cudax::cufile>().close())>);
{
cudax::cufile file;
file.close();
REQUIRE(file.get() == nullptr);
REQUIRE(file.native_handle() == -1);
file.open(filename, cudax::cufile_open_mode::out);
REQUIRE(file.get() != nullptr);
test_check_fd_is_valid(file.native_handle());
test_check_file_exists(filename);
file.close();
REQUIRE(file.get() == nullptr);
REQUIRE(file.native_handle() == -1);
file.close();
REQUIRE(file.get() == nullptr);
REQUIRE(file.native_handle() == -1);
}
test_remove_file(filename);
// 13. Test native_handle().
STATIC_REQUIRE(noexcept(cuda::std::declval<cudax::cufile>().native_handle()));
STATIC_REQUIRE(cuda::std::is_same_v<int, decltype(cuda::std::declval<cudax::cufile>().native_handle())>);
// 14. Test release().
STATIC_REQUIRE(noexcept(cuda::std::declval<cudax::cufile>().release()));
STATIC_REQUIRE(cuda::std::is_same_v<int, decltype(cuda::std::declval<cudax::cufile>().release())>);
{
cudax::cufile file;
REQUIRE(file.release() == -1);
file.open(filename, cudax::cufile_open_mode::out);
REQUIRE(file.get() != nullptr);
test_check_fd_is_valid(file.native_handle());
int fd = file.release();
REQUIRE(file.get() == nullptr);
REQUIRE(file.native_handle() == -1);
REQUIRE(close(fd) == 0);
}
test_remove_file(filename);
// 15. Test from_native_handle(native_handle).
STATIC_REQUIRE(!noexcept(cudax::cufile::from_native_handle(cuda::std::declval<int>())));
STATIC_REQUIRE(
cuda::std::is_same_v<cudax::cufile, decltype(cudax::cufile::from_native_handle(cuda::std::declval<int>()))>);
{
FILE* cfile = std::fopen(filename, "w");
test_check_file_exists(filename);
int fd = fileno(cfile);
REQUIRE(fd != -1);
cudax::cufile file = cudax::cufile::from_native_handle(fd);
REQUIRE(file.get() != nullptr);
REQUIRE(file.native_handle() == fd);
}
test_remove_file(filename);
}