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

54 lines
1.6 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/delay.hpp>
#include <unifex/for_each.hpp>
#include <unifex/inplace_stop_token.hpp>
#include <unifex/range_stream.hpp>
#include <unifex/sync_wait.hpp>
#include <unifex/timed_single_thread_context.hpp>
#include <unifex/typed_via_stream.hpp>
#include <unifex/scheduler_concepts.hpp>
#include <unifex/then.hpp>
#include <unifex/stop_when.hpp>
#include <chrono>
#include <cstdio>
#include <thread>
using namespace unifex;
int main() {
using namespace std::chrono;
timed_single_thread_context context;
auto startTime = steady_clock::now();
sync_wait(
stop_when(
for_each(
delay(range_stream{0, 100}, context.get_scheduler(), 100ms),
[startTime](int value) {
auto ms = duration_cast<milliseconds>(steady_clock::now() - startTime);
std::printf("[%i ms] %i\n", (int)ms.count(), value);
}),
then(
schedule_after(context.get_scheduler(), 500ms),
[] { std::printf("cancelling\n"); })));
return 0;
}