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_stop_token() const noexcept;
14
15#include <cassert>
16#include <concepts>
17#include <stop_token>
18#include <thread>
19#include <type_traits>
20#include <utility>
21
22#include "make_test_thread.h"
23#include "test_macros.h"
24
25static_assert(noexcept(std::declval<const std::jthread&>().get_stop_token()));
26
27int main(int, char**) {
28 // Represents a thread
29 {
30 std::jthread jt = support::make_test_jthread([] {});
31 auto ss = jt.get_stop_source();
32 std::same_as<std::stop_token> decltype(auto) st = std::as_const(jt).get_stop_token();
33
34 assert(st.stop_possible());
35 assert(!st.stop_requested());
36 ss.request_stop();
37 assert(st.stop_requested());
38 }
39
40 // Does not represent a thread
41 {
42 const std::jthread jt{};
43 std::same_as<std::stop_token> decltype(auto) st = jt.get_stop_token();
44
45 assert(!st.stop_possible());
46 }
47
48 return 0;
49}
50

source code of libcxx/test/std/thread/thread.jthread/get_stop_token.pass.cpp