1//
2// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
3// See https://llvm.org/LICENSE.txt for license information.
4// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
5//
6//===----------------------------------------------------------------------===//
7
8// UNSUPPORTED: c++03, c++11, c++14, c++17
9// XFAIL: !has-64-bit-atomics
10// XFAIL: !has-1024-bit-atomics
11
12// void store(T, memory_order = memory_order::seq_cst) const noexcept;
13
14#include <atomic>
15#include <cassert>
16#include <type_traits>
17
18#include "atomic_helpers.h"
19#include "test_helper.h"
20#include "test_macros.h"
21
22template <typename T>
23struct TestStore {
24 void operator()() const {
25 T x(T(1));
26 std::atomic_ref<T> const a(x);
27
28 a.store(T(2));
29 assert(x == T(2));
30 ASSERT_NOEXCEPT(a.store(T(1)));
31
32 a.store(T(3), std::memory_order_seq_cst);
33 assert(x == T(3));
34 ASSERT_NOEXCEPT(a.store(T(0), std::memory_order_seq_cst));
35
36 // TODO memory_order::relaxed
37
38 // memory_order::seq_cst
39 {
40 auto store_no_arg = [](std::atomic_ref<T> const& y, T, T new_val) { y.store(new_val); };
41 auto store_with_order = [](std::atomic_ref<T> const& y, T, T new_val) {
42 y.store(new_val, std::memory_order::seq_cst);
43 };
44 auto load = [](std::atomic_ref<T> const& y) { return y.load(); };
45 test_seq_cst<T>(store_no_arg, load);
46 test_seq_cst<T>(store_with_order, load);
47 }
48
49 // memory_order::release
50 {
51 auto store = [](std::atomic_ref<T> const& y, T, T new_val) { y.store(new_val, std::memory_order::release); };
52 auto load = [](std::atomic_ref<T> const& y) { return y.load(std::memory_order::acquire); };
53 test_acquire_release<T>(store, load);
54 }
55 }
56};
57
58int main(int, char**) {
59 TestEachAtomicType<TestStore>()();
60 return 0;
61}
62

source code of libcxx/test/std/atomics/atomics.ref/store.pass.cpp