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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_source& rhs) noexcept;
#include <cassert>
#include <concepts>
#include <stop_token>
#include <type_traits>
#include "test_macros.h"
template <class T>
concept IsNoThrowFreeSwappable = requires(T& t) {
{ swap(t, t) } noexcept;
};
static_assert(IsNoThrowFreeSwappable<std::stop_source>);
int main(int, char**) {
{
std::stop_source ss1;
std::stop_source ss2;
assert(ss1 != ss2);
ss2.request_stop();
assert(!ss1.stop_requested());
assert(ss2.stop_requested());
swap(ss1, ss2);
assert(ss1 != ss2);
assert(ss1.stop_requested());
assert(!ss2.stop_requested());
}
return 0;
}
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