AimRT/_deps/libunifex-src/examples/never_stream_cancellation.cpp
2025-01-12 20:42:42 +08:00

53 lines
1.5 KiB
C++

/*
* Copyright (c) Facebook, Inc. and its affiliates.
*
* Licensed under the Apache License Version 2.0 with LLVM Exceptions
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* https://llvm.org/LICENSE.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include <unifex/for_each.hpp>
#include <unifex/inplace_stop_token.hpp>
#include <unifex/never.hpp>
#include <unifex/sync_wait.hpp>
#include <unifex/stop_when.hpp>
#include <unifex/then.hpp>
#include <unifex/timed_single_thread_context.hpp>
#include <unifex/scheduler_concepts.hpp>
#include <chrono>
#include <cstdio>
#include <optional>
#include <thread>
using namespace std::literals::chrono_literals;
using namespace unifex;
int main() {
timed_single_thread_context context;
std::optional<unit> result = sync_wait(
stop_when(
for_each(
never_stream{},
[](auto) {
std::printf("got value");
std::fflush(stdout);
}),
then(
schedule_after(context.get_scheduler(), 100ms),
[] { std::printf("trigger completing, about to request stop\n"); })));
std::printf("completed with %s\n", result ? "unit" : "nullopt");
return 0;
}