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//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// XFAIL: !has-64-bit-atomics
// XFAIL: !has-1024-bit-atomics
// T load(memory_order = memory_order::seq_cst) const noexcept;
#include <atomic>
#include <concepts>
#include <cassert>
#include <type_traits>
#include "atomic_helpers.h"
#include "test_helper.h"
#include "test_macros.h"
template <typename T>
struct TestLoad {
void operator()() const {
T x(T(1));
std::atomic_ref<T> const a(x);
{
std::same_as<T> decltype(auto) y = a.load();
assert(y == T(1));
ASSERT_NOEXCEPT(a.load());
}
{
std::same_as<T> decltype(auto) y = a.load(std::memory_order_seq_cst);
assert(y == T(1));
ASSERT_NOEXCEPT(a.load(std::memory_order_seq_cst));
}
// memory_order::seq_cst
{
auto store = [](std::atomic_ref<T> const& y, T, T new_val) { y.store(new_val); };
auto load_no_arg = [](std::atomic_ref<T> const& y) { return y.load(); };
auto load_with_order = [](std::atomic_ref<T> const& y) { return y.load(std::memory_order::seq_cst); };
test_seq_cst<T>(store, load_no_arg);
test_seq_cst<T>(store, load_with_order);
}
// memory_order::release
{
auto store = [](std::atomic_ref<T> const& y, T, T new_val) { y.store(new_val, std::memory_order::release); };
auto load = [](std::atomic_ref<T> const& y) { return y.load(std::memory_order::acquire); };
test_acquire_release<T>(store, load);
}
}
};
int main(int, char**) {
TestEachAtomicType<TestLoad>()();
return 0;
}
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