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 | |
25 | static_assert(noexcept(std::declval<const std::jthread&>().get_stop_token())); |
26 | |
27 | int 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 |