ThreadPoolTaskScheduler.h

/*
 * Copyright (C) 2019-2021 HERE Europe B.V.
 *
 * Licensed 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.
 *
 * SPDX-License-Identifier: Apache-2.0
 * License-Filename: LICENSE
 */
 
#pragma once
 
#include <thread>
#include <vector>
 
#include <olp/core/thread/TaskScheduler.h>
 
namespace olp {
namespace thread {
 
class CORE_API ThreadPoolTaskScheduler final : public TaskScheduler {
 public:
  explicit ThreadPoolTaskScheduler(size_t thread_count = 1u);
 
  ~ThreadPoolTaskScheduler() override;
 
  ThreadPoolTaskScheduler(const ThreadPoolTaskScheduler&) = delete;
  ThreadPoolTaskScheduler& operator=(const ThreadPoolTaskScheduler&) = delete;
  ThreadPoolTaskScheduler(ThreadPoolTaskScheduler&&) = delete;
  ThreadPoolTaskScheduler& operator=(ThreadPoolTaskScheduler&&) = delete;
 
 protected:
  void EnqueueTask(TaskScheduler::CallFuncType&& func) override;
 
  void EnqueueTask(TaskScheduler::CallFuncType&& func,
                   uint32_t priority) override;
 
 private:
  class QueueImpl;
 
  std::vector<std::thread> thread_pool_;
  std::unique_ptr<QueueImpl> queue_;
};
 
}  // namespace thread
}  // namespace olp