87 lines
2.3 KiB
C++
87 lines
2.3 KiB
C++
/*
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* TesterScheduler.cpp
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*
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* This source file is part of the FoundationDB open source project
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*
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* Copyright 2013-2022 Apple Inc. and the FoundationDB project authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "TesterScheduler.h"
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#include "TesterUtil.h"
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#include <boost/asio/detail/chrono.hpp>
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#include <memory>
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#include <thread>
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#include <boost/asio.hpp>
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using namespace boost::asio;
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namespace FdbApiTester {
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const TTaskFct NO_OP_TASK = []() {};
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class AsioTimer : public ITimer {
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public:
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AsioTimer(io_context& io_ctx, chrono::steady_clock::duration time) : impl(io_ctx, time) {}
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void cancel() override { impl.cancel(); }
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boost::asio::steady_timer impl;
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};
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class AsioScheduler : public IScheduler {
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public:
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AsioScheduler(int numThreads) : numThreads(numThreads) {}
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void start() override {
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work = require(io_ctx.get_executor(), execution::outstanding_work.tracked);
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for (int i = 0; i < numThreads; i++) {
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threads.emplace_back([this]() { io_ctx.run(); });
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}
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}
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void schedule(TTaskFct task) override { post(io_ctx, task); }
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std::unique_ptr<ITimer> scheduleWithDelay(int delayMs, TTaskFct task) override {
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auto timer = std::make_unique<AsioTimer>(io_ctx, boost::asio::chrono::milliseconds(delayMs));
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timer->impl.async_wait([task](const boost::system::error_code& e) {
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if (!e) {
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task();
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}
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});
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return timer;
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}
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void stop() override { work = any_io_executor(); }
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void join() override {
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for (auto& th : threads) {
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th.join();
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}
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}
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private:
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int numThreads;
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std::vector<std::thread> threads;
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io_context io_ctx;
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any_io_executor work;
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};
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std::unique_ptr<IScheduler> createScheduler(int numThreads) {
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ASSERT(numThreads > 0 && numThreads <= 1000);
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return std::make_unique<AsioScheduler>(numThreads);
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}
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} // namespace FdbApiTester
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