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: libcpp-has-no-experimental-stop_token
11// UNSUPPORTED: c++03, c++11, c++14, c++17
12// XFAIL: availability-synchronization_library-missing
13
14// stop_source(const stop_source&) noexcept;
15
16#include <cassert>
17#include <optional>
18#include <stop_token>
19#include <type_traits>
20
21#include "test_macros.h"
22
23static_assert(std::is_nothrow_copy_constructible_v<std::stop_source>);
24
25int main(int, char**) {
26 {
27 std::stop_source source;
28 std::stop_source copy{source};
29
30 assert(source == copy);
31
32 assert(source.stop_possible());
33 assert(!source.stop_requested());
34
35 assert(copy.stop_possible());
36 assert(!copy.stop_requested());
37
38 source.request_stop();
39 assert(source.stop_possible());
40 assert(source.stop_requested());
41
42 assert(copy.stop_possible());
43 assert(copy.stop_requested());
44 }
45
46 // source counter incremented
47 {
48 std::optional<std::stop_source> source(std::in_place);
49 auto st = source->get_token();
50 assert(st.stop_possible());
51
52 std::optional<std::stop_source> copy{source};
53 source.reset();
54
55 assert(st.stop_possible());
56
57 copy.reset();
58 assert(!st.stop_possible());
59 }
60
61 // copy from empty
62 {
63 std::stop_source ss1{std::nostopstate};
64 std::stop_source copy{ss1};
65 assert(!copy.stop_possible());
66 }
67
68 return 0;
69}
70

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