//===----------------------------------------------------------------------===//
//
// 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
// stop_source(const stop_source&) noexcept;
#include <cassert>
#include <optional>
#include <stop_token>
#include <type_traits>
#include "test_macros.h"
static_assert(std::is_nothrow_copy_constructible_v<std::stop_source>);
int main(int, char**) {
{
std::stop_source source;
std::stop_source copy{source};
assert(source == copy);
assert(source.stop_possible());
assert(!source.stop_requested());
assert(copy.stop_possible());
assert(!copy.stop_requested());
source.request_stop();
assert(source.stop_possible());
assert(source.stop_requested());
assert(copy.stop_possible());
assert(copy.stop_requested());
}
// source counter incremented
{
std::optional<std::stop_source> source(std::in_place);
auto st = source->get_token();
assert(st.stop_possible());
std::optional<std::stop_source> copy{source};
source.reset();
assert(st.stop_possible());
copy.reset();
assert(!st.stop_possible());
}
// copy from empty
{
std::stop_source ss1{std::nostopstate};
std::stop_source copy{ss1};
assert(!copy.stop_possible());
}
return 0;
}