text: #ifndef __WORKERBASE_H__
  #define __WORKERBASE_H__
  
  /*
   * Copyright (c) 2017-2020, SeungRyeol Lee
   * All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are met:
   *
   * * Redistributions of source code must retain the above copyright notice, this
   * list of conditions and the following disclaimer.
   *
   * * Redistributions in binary form must reproduce the above copyright notice,
   * this list of conditions and the following disclaimer in the documentation
   * and/or other materials provided with the distribution.
   *
   * * Neither the name of the copyright holder nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
   * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
   * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
   * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
   * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   */
  
  #include <string>
  
  namespace std {
  class thread;
  }
  
  
  namespace cppbase {
  
  class WorkerHandler;
  
  class WorkerBase
  {
  public:
    virtual bool initialize();
    virtual void finalize();
  
    void registerHandler(WorkerHandler* handler) { handler_ = handler; }
  
    const std::string& name() const { return name_; }
    void setName(const std::string& name) { name_ = name; }
  
  private:
    virtual void thread_loop() = 0;
  
  public:     // constructor and destructor
    explicit WorkerBase() = default;
    explicit WorkerBase(const std::string& name);
    virtual ~WorkerBase();
  
  protected:
    WorkerHandler* handler_ = nullptr;
  
  private:
    std::string name_;
  
    std::thread* thread_ = nullptr;
  };
  
  } // namespace cppbase
  
  #endif
  