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  1. /***************************************************************************
  2.  *   Copyright (C) December 20, 2008 by Mattias Runge                             *
  3.  *   mattias@runge.se                                                      *
  4.  *   threadsafequeue.h                                            *
  5.  *                                                                         *
  6.  *   This program is free software; you can redistribute it and/or modify  *
  7.  *   it under the terms of the GNU General Public License as published by  *
  8.  *   the Free Software Foundation; either version 2 of the License, or     *
  9.  *   (at your option) any later version.                                   *
  10.  *                                                                         *
  11.  *   This program is distributed in the hope that it will be useful,       *
  12.  *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
  13.  *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
  14.  *   GNU General Public License for more details.                          *
  15.  *                                                                         *
  16.  *   You should have received a copy of the GNU General Public License     *
  17.  *   along with this program; if not, write to the                         *
  18.  *   Free Software Foundation, Inc.,                                       *
  19.  *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *
  20.  ***************************************************************************/
  21.  
  22. #ifndef _THREADSAFEQUEUE_H
  23. #define _THREADSAFEQUEUE_H
  24.  
  25. using namespace std;
  26.  
  27. #include <queue>
  28. #include "mutex.h"
  29.  
  30. template <class T>
  31. class ThreadSafeQueue
  32. {
  33. public:
  34.     ThreadSafeQueue() {};
  35.     ~ThreadSafeQueue() {};
  36.    
  37.     void push(T item)
  38.     {
  39.         myMutex.lock();
  40.         myQueue.push(item);
  41.         myMutex.unlock();
  42.     }
  43.    
  44.     T pop()
  45.     {
  46.         myMutex.lock();
  47.         T item = myQueue.front();
  48.         myQueue.pop();
  49.         myMutex.unlock();
  50.         return item;
  51.     }
  52.    
  53.     int size()
  54.     {
  55.         myMutex.lock();
  56.         int size = myQueue.size();
  57.         myMutex.unlock();
  58.         return size;
  59.     }
  60.  
  61. private:
  62.     queue<T> myQueue;
  63.     Mutex myMutex;
  64. };
  65.  
  66. #endif  /* _THREADSAFEQUEUE_H */
  67.  
  68.