ExecutorThread.h

/*
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 *
 * ExecutorThread.h
 * Run callbacks in a separate thread.
 * Copyright (C) 2015 Simon Newton
 */

#ifndef INCLUDE_OLA_THREAD_EXECUTORTHREAD_H_
#define INCLUDE_OLA_THREAD_EXECUTORTHREAD_H_

#include <ola/Callback.h>
#include <ola/io/SelectServer.h>
#include <ola/thread/Thread.h>
#include <ola/thread/ConsumerThread.h>

#include <memory>
#include <queue>

namespace ola {
namespace thread {

class ExecutorThread : public ola::thread::ExecutorInterface {
 public:
  explicit ExecutorThread(const ola::thread::Thread::Options& options)
    : m_shutdown(false),
      m_thread(&m_callback_queue, &m_shutdown, &m_mutex, &m_condition_var,
               options) {
  }

  ~ExecutorThread();

  void Execute(ola::BaseCallback0<void> *callback);

  void DrainCallbacks();

  bool Start();

  bool Stop();

 private:
  // CallbackThread m_thread;
  std::queue<ola::BaseCallback0<void>*> m_callback_queue;
  bool m_shutdown;
  Mutex m_mutex;
  ConditionVariable m_condition_var;
  ConsumerThread m_thread;

  void RunRemaining();

  DISALLOW_COPY_AND_ASSIGN(ExecutorThread);
};

}  // namespace thread
}  // namespace ola
#endif  // INCLUDE_OLA_THREAD_EXECUTORTHREAD_H_