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    //
    // Created by Ben Bergkamp on 1/25/18.
    //
    
    #include "ProducerConsumerQueue.h"
    
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    template <class T>
    void ProducerConsumerQueue<T>::Push(T obj)
    {
        pthread_mutex_lock(&m);
    
        queue.push(obj);
    
        if(queue.size() == 1)
        {
            pthread_cond_signal(&consumer_cv);
        }
    
        pthread_mutex_unlock(&m);
    }
    
    template <class T>
    T ProducerConsumerQueue<T>::Pop()
    {
        pthread_mutex_lock(&m);
    
        while(queue.empty() == true)
        {
            pthread_cond_wait(&consumer_cv, &m);
        }
    
        T front = queue.front();
        queue.pop();
    
        pthread_mutex_unlock(&m);
    
        return front;
    }
    
    template <class T>
    size_t ProducerConsumerQueue<T>::Size()
    {
        pthread_mutex_lock(&m);
        size_t size = queue.size();
        pthread_mutex_unlock(&m);
        return size;
    }