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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// UNSUPPORTED: no-threads
// UNSUPPORTED: libcpp-has-no-experimental-stop_token
// UNSUPPORTED: c++03, c++11, c++14, c++17
// XFAIL: availability-synchronization_library-missing
// void swap(stop_token& rhs) noexcept;
#include <cassert>
#include <concepts>
#include <stop_token>
#include <type_traits>
#include "test_macros.h"
template <class T>
concept IsNoThrowMemberSwappable = requires(T& t) {
{ t.swap(t) } noexcept;
};
static_assert(IsNoThrowMemberSwappable<std::stop_token>);
int main(int, char**) {
{
std::stop_token st1;
std::stop_source source;
auto st2 = source.get_token();
assert(st1 != st2);
source.request_stop();
assert(!st1.stop_requested());
assert(st2.stop_requested());
st1.swap(st2);
assert(st1 != st2);
assert(st1.stop_requested());
assert(!st2.stop_requested());
}
return 0;
}
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