121ed5c198
<stop_token> is not experimental anymore, so its tests shouldn't be guarded by libcpp-has-no-experimental-stop_token.
80 lines
2.0 KiB
C++
80 lines
2.0 KiB
C++
//===----------------------------------------------------------------------===//
|
|
//
|
|
// 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: c++03, c++11, c++14, c++17
|
|
// XFAIL: availability-synchronization_library-missing
|
|
|
|
// bool request_stop() noexcept;
|
|
|
|
#include <cassert>
|
|
#include <chrono>
|
|
#include <concepts>
|
|
#include <optional>
|
|
#include <stop_token>
|
|
#include <type_traits>
|
|
|
|
#include "make_test_thread.h"
|
|
#include "test_macros.h"
|
|
|
|
template <class T>
|
|
concept IsRequestStopNoexcept = requires(T& t) {
|
|
{ t.request_stop() } noexcept;
|
|
};
|
|
|
|
static_assert(IsRequestStopNoexcept<std::stop_source>);
|
|
|
|
int main(int, char**) {
|
|
// If *this does not have ownership of a stop state, returns false
|
|
{
|
|
std::stop_source ss{std::nostopstate};
|
|
auto ret = ss.request_stop();
|
|
assert(!ret);
|
|
assert(!ss.stop_requested());
|
|
}
|
|
|
|
// Otherwise, atomically determines whether the owned stop state has received
|
|
// a stop request, and if not, makes a stop request
|
|
{
|
|
std::stop_source ss;
|
|
|
|
auto ret = ss.request_stop();
|
|
assert(ret);
|
|
assert(ss.stop_requested());
|
|
}
|
|
|
|
// already requested
|
|
{
|
|
std::stop_source ss;
|
|
ss.request_stop();
|
|
assert(ss.stop_requested());
|
|
|
|
auto ret = ss.request_stop();
|
|
assert(!ret);
|
|
assert(ss.stop_requested());
|
|
}
|
|
|
|
// If the request was made, the callbacks registered by
|
|
// associated stop_callback objects are synchronously called.
|
|
{
|
|
std::stop_source ss;
|
|
auto st = ss.get_token();
|
|
|
|
bool cb1Called = false;
|
|
bool cb2Called = false;
|
|
std::stop_callback sc1(st, [&] { cb1Called = true; });
|
|
std::stop_callback sc2(st, [&] { cb2Called = true; });
|
|
|
|
ss.request_stop();
|
|
assert(cb1Called);
|
|
assert(cb2Called);
|
|
}
|
|
|
|
return 0;
|
|
}
|