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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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217
cccl_upstream/cudax/test/execution/test_continues_on.cu
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@@ -1,217 +0,0 @@
//===----------------------------------------------------------------------===//
//
// 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) 2024 NVIDIA CORPORATION & AFFILIATES.
//
//===----------------------------------------------------------------------===//
#include <cuda/experimental/execution.cuh>
//
#include "common/checked_receiver.cuh"
#include "common/dummy_scheduler.cuh"
#include "common/error_scheduler.cuh"
#include "common/impulse_scheduler.cuh" // IWYU pragma: keep
#include "common/stopped_scheduler.cuh"
#include "common/utility.cuh"
#include "testing.cuh" // IWYU pragma: keep
namespace ex = cuda::experimental::execution;
namespace
{
C2H_TEST("continues_on simple example", "[adaptors][continues_on]")
{
auto snd = ex::continues_on(ex::just(13), ex::inline_scheduler{});
auto op = ex::connect(std::move(snd), checked_value_receiver{13});
static_assert(ex::get_completion_behavior<decltype(snd)>() == ex::completion_behavior::inline_completion);
ex::start(op);
// The receiver checks if we receive the right value
}
#if _CCCL_HOST_COMPILATION()
C2H_TEST("continues_on can be piped", "[adaptors][continues_on]")
{
// Just continues_on a value to the impulse scheduler
bool called{false};
auto sched = impulse_scheduler{};
auto snd = ex::just(13) //
| ex::continues_on(sched) //
| ex::then([&](int val) {
called = true;
return val;
});
static_assert(ex::get_completion_behavior<decltype(snd)>() == ex::completion_behavior::asynchronous);
// Start the operation
auto op = ex::connect(std::move(snd), checked_value_receiver{13});
ex::start(op);
// The value will be available when the scheduler will execute the next operation
REQUIRE(!called);
sched.start_next();
REQUIRE(called);
}
C2H_TEST("continues_on calls the receiver when the scheduler dictates", "[adaptors][continues_on]")
{
bool called{false};
impulse_scheduler sched;
auto snd = ex::then(ex::continues_on(ex::just(13), sched), [&](int val) {
called = true;
return val;
});
auto op = ex::connect(snd, checked_value_receiver{13});
ex::start(op);
// Up until this point, the scheduler didn't start any task; no effect expected
CHECK(!called);
// Tell the scheduler to start executing one task
sched.start_next();
CHECK(called);
}
C2H_TEST("continues_on calls the given sender when the scheduler dictates", "[adaptors][continues_on]")
{
int counter{0};
auto snd_base = ex::just() //
| ex::then([&]() -> int {
++counter;
return 19;
});
impulse_scheduler sched;
auto snd = ex::then(ex::continues_on(std::move(snd_base), sched), [&](int val) {
++counter;
return val;
});
auto op = ex::connect(std::move(snd), checked_value_receiver{19});
ex::start(op);
// The sender is started, even if the scheduler hasn't yet triggered
CHECK(counter == 1);
// ... but didn't send the value to the receiver yet
// Tell the scheduler to start executing one task
sched.start_next();
// Now the base sender is called, and a value is sent to the receiver
CHECK(counter == 2);
}
C2H_TEST("continues_on works when changing threads", "[adaptors][continues_on]")
{
ex::thread_context thread;
bool called{false};
{
// lunch some work on the thread pool
auto snd = ex::continues_on(ex::just(), thread.get_scheduler()) //
| ex::then([&] {
called = true;
});
ex::start_detached(std::move(snd));
}
thread.join();
// the work should be executed
REQUIRE(called);
}
#endif // _CCCL_HOST_COMPILATION()
C2H_TEST("continues_on can be called with rvalue ref scheduler", "[adaptors][continues_on]")
{
auto snd = ex::continues_on(ex::just(13), dummy_scheduler<>{});
auto op = ex::connect(std::move(snd), checked_value_receiver{13});
ex::start(op);
// The receiver checks if we receive the right value
}
C2H_TEST("continues_on can be called with const ref scheduler", "[adaptors][continues_on]")
{
const dummy_scheduler<> sched;
auto snd = ex::continues_on(ex::just(13), sched);
auto op = ex::connect(std::move(snd), checked_value_receiver{13});
ex::start(op);
// The receiver checks if we receive the right value
}
C2H_TEST("continues_on can be called with ref scheduler", "[adaptors][continues_on]")
{
dummy_scheduler<> sched;
auto snd = ex::continues_on(ex::just(13), sched);
auto op = ex::connect(std::move(snd), checked_value_receiver{13});
ex::start(op);
// The receiver checks if we receive the right value
}
C2H_TEST("continues_on forwards set_error calls", "[adaptors][continues_on]")
{
auto ec = error_code{std::errc::invalid_argument};
error_scheduler<error_code> sched{ec};
auto snd = ex::continues_on(ex::just(13), sched);
auto op = ex::connect(std::move(snd), checked_error_receiver{ec});
ex::start(op);
// The receiver checks if we receive an error
}
C2H_TEST("continues_on forwards set_error calls of other types", "[adaptors][continues_on]")
{
error_scheduler<string> sched{string{"error"}};
auto snd = ex::continues_on(ex::just(13), sched);
auto op = ex::connect(std::move(snd), checked_error_receiver{string{"error"}});
ex::start(op);
// The receiver checks if we receive an error
}
C2H_TEST("continues_on forwards set_stopped calls", "[adaptors][continues_on]")
{
stopped_scheduler sched{};
auto snd = ex::continues_on(ex::just(13), sched);
auto op = ex::connect(std::move(snd), checked_stopped_receiver{});
ex::start(op);
// The receiver checks if we receive the stopped signal
}
C2H_TEST("continues_on has the values_type corresponding to the given values", "[adaptors][continues_on]")
{
dummy_scheduler<> sched{};
check_value_types<types<int>>(ex::continues_on(ex::just(1), sched));
check_value_types<types<int, double>>(ex::continues_on(ex::just(3, 0.14), sched));
check_value_types<types<int, double, string>>(ex::continues_on(ex::just(3, 0.14, string{"pi"}), sched));
}
C2H_TEST("continues_on keeps error_types from scheduler's sender", "[adaptors][continues_on]")
{
dummy_scheduler<> sched1{};
error_scheduler<std::error_code> sched2{std::make_error_code(std::errc::invalid_argument)};
error_scheduler<int> sched3{43};
check_error_types<>(ex::continues_on(ex::just(1), sched1));
check_error_types<std::error_code>(ex::continues_on(ex::just(2), sched2));
check_error_types<int>(ex::continues_on(ex::just(3), sched3));
}
C2H_TEST("continues_on sends an exception_ptr if value types are potentially throwing when copied",
"[adaptors][continues_on]")
{
dummy_scheduler<> sched{};
check_error_types<ex::exception_ptr>(ex::continues_on(ex::just(potentially_throwing{}), sched));
}
C2H_TEST("continues_on keeps sends_stopped from scheduler's sender", "[adaptors][continues_on]")
{
dummy_scheduler<> sched1{};
stopped_scheduler sched2{};
check_sends_stopped<false>(ex::continues_on(ex::just(1), sched1));
check_sends_stopped<true>(ex::continues_on(ex::just_stopped(), sched1));
check_sends_stopped<true>(ex::continues_on(ex::just(3), sched2));
}
} // namespace