| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * 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. |
| */ |
| |
| #pragma once |
| |
| #ifndef GEODE_THREADPOOL_H_ |
| #define GEODE_THREADPOOL_H_ |
| |
| #include <atomic> |
| #include <condition_variable> |
| #include <deque> |
| #include <mutex> |
| #include <thread> |
| #include <vector> |
| |
| #include "AppDomainContext.hpp" |
| |
| namespace apache { |
| namespace geode { |
| namespace client { |
| |
| class Callable { |
| public: |
| virtual ~Callable() noexcept = default; |
| virtual void call() = 0; |
| }; |
| |
| template <class T> |
| class PooledWork : public Callable { |
| private: |
| T m_retVal; |
| std::recursive_mutex m_mutex; |
| std::condition_variable_any m_cond; |
| bool m_done; |
| |
| public: |
| PooledWork() : m_mutex(), m_cond(), m_done(false) {} |
| |
| ~PooledWork() override {} |
| |
| void call() override { |
| T res = execute(); |
| |
| std::lock_guard<decltype(m_mutex)> lock(m_mutex); |
| |
| m_retVal = res; |
| m_done = true; |
| m_cond.notify_all(); |
| } |
| |
| T getResult(void) { |
| std::unique_lock<decltype(m_mutex)> lock(m_mutex); |
| |
| while (!m_done) { |
| m_cond.wait(lock, [this] { return m_done; }); |
| } |
| |
| return m_retVal; |
| } |
| |
| protected: |
| virtual T execute(void) = 0; |
| }; |
| |
| class ThreadPool { |
| public: |
| explicit ThreadPool(size_t threadPoolSize); |
| ~ThreadPool(); |
| |
| void perform(std::shared_ptr<Callable> req); |
| |
| void shutDown(void); |
| |
| private: |
| bool shutdown_; |
| std::vector<std::thread> workers_; |
| std::deque<std::shared_ptr<Callable>> queue_; |
| std::mutex queueMutex_; |
| std::condition_variable queueCondition_; |
| static const char* NC_Pool_Thread; |
| AppDomainContext* appDomainContext_; |
| }; |
| |
| } // namespace client |
| } // namespace geode |
| } // namespace apache |
| |
| #endif // GEODE_THREADPOOL_H_ |