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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
// [[nodiscard]] stop_token get_token() const noexcept;
#include <cassert>
#include <concepts>
#include <stop_token>
#include <type_traits>
#include "test_macros.h"
template <class T>
concept IsGetTokenNoexcept = requires(const T& t) {
{ t.get_token() } noexcept;
};
static_assert(IsGetTokenNoexcept<std::stop_source>);
int main(int, char**) {
// no state
{
std::stop_source ss{std::nostopstate};
std::same_as<std::stop_token> decltype(auto) st = ss.get_token();
assert(!st.stop_possible());
assert(!st.stop_requested());
}
// with state
{
std::stop_source ss;
std::same_as<std::stop_token> decltype(auto) st = ss.get_token();
assert(st.stop_possible());
assert(!st.stop_requested());
ss.request_stop();
assert(st.stop_requested());
}
return 0;
}
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