1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8//
9// UNSUPPORTED: no-threads
10// UNSUPPORTED: c++03, c++11, c++14, c++17
11// XFAIL: availability-synchronization_library-missing
12
13// [[nodiscard]] stop_token get_token() const noexcept;
14
15#include <cassert>
16#include <concepts>
17#include <stop_token>
18#include <type_traits>
19
20#include "test_macros.h"
21
22template <class T>
23concept IsGetTokenNoexcept = requires(const T& t) {
24 { t.get_token() } noexcept;
25};
26
27static_assert(IsGetTokenNoexcept<std::stop_source>);
28
29int main(int, char**) {
30 // no state
31 {
32 std::stop_source ss{std::nostopstate};
33 std::same_as<std::stop_token> decltype(auto) st = ss.get_token();
34 assert(!st.stop_possible());
35 assert(!st.stop_requested());
36 }
37
38 // with state
39 {
40 std::stop_source ss;
41 std::same_as<std::stop_token> decltype(auto) st = ss.get_token();
42 assert(st.stop_possible());
43 assert(!st.stop_requested());
44
45 ss.request_stop();
46 assert(st.stop_requested());
47 }
48
49 return 0;
50}
51

source code of libcxx/test/std/thread/thread.stoptoken/stopsource/get_token.pass.cpp