/*
 * @project      The CERN Tape Archive (CTA)
 * @copyright    Copyright © 2021-2022 CERN
 * @license      This program is free software, distributed under the terms of the GNU General Public
 *               Licence version 3 (GPL Version 3), copied verbatim in the file "COPYING". You can
 *               redistribute it and/or modify it under the terms of the GPL Version 3, or (at your
 *               option) any later version.
 *
 *               This program 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 General Public License for more details.
 *
 *               In applying this licence, CERN does not waive the privileges and immunities
 *               granted to it by virtue of its status as an Intergovernmental Organization or
 *               submit itself to any jurisdiction.
 */

#include "common/threading/BlockingQueue.hpp"
#include <gtest/gtest.h>

namespace threadedUnitTests {

    typedef cta::threading::BlockingQueue<int> QueueType;

    const int numberOfElements = 10000;
    class PingThread : public cta::threading::Thread {
        QueueType& queue;
    protected :
        virtual void run()  //@override 
        {
            
            for(int i=0;i<numberOfElements;++i)
            {
                int n = queue.pop();
                queue.push(n+1);
            }
        }
    public:
      explicit PingThread(QueueType& q):queue(q) {}
    };

    class PongThread : public cta::threading::Thread {
        QueueType& queue;
    protected:
         virtual void run()  //@override 
        {
            for(int i=0;i<numberOfElements;++i)
            {
                int n = queue.pop();
                queue.push(n+1);
            }
        }
    public:
      explicit PongThread(QueueType& q):queue(q) {}
    };
    
    TEST(cta_threading, BlockingQ_properly_working_on_helgrind) {
        QueueType sharedQueue;
        
        PingThread ping(sharedQueue);
        PongThread pong(sharedQueue);

        pong.start();
        sharedQueue.push(0);
        sharedQueue.push(-100);
        
        ping.start();
        
        sharedQueue.push(42);
        sharedQueue.push(21);
     
        
        pong.wait();
        ping.wait();
        
        ASSERT_EQ(4U,sharedQueue.size());
  }

}