Brooklyn/rdp-acceleraed/Server/bounded_buffer.h

#include <boost/circular_buffer.hpp>
#include <boost/thread/mutex.hpp>
#include <boost/thread/condition.hpp>
#include <boost/thread/thread.hpp>
#include <boost/call_traits.hpp>
#include <boost/bind.hpp>

#include <boost/timer/timer.hpp> // for auto_cpu_timer

template <class T>
class bounded_buffer
{
public:

  typedef boost::circular_buffer<T> container_type;
  typedef typename container_type::size_type size_type;
  typedef typename container_type::value_type value_type;
  typedef typename boost::call_traits<value_type>::param_type param_type;

  explicit bounded_buffer(size_type capacity) : m_unread(0), m_container(capacity) {}

  void push_front(typename boost::call_traits<value_type>::param_type item)
  { // `param_type` represents the "best" way to pass a parameter of type `value_type` to a method.

      boost::mutex::scoped_lock lock(m_mutex);
      m_not_full.wait(lock, boost::bind(&bounded_buffer<value_type>::is_not_full, this));
      m_container.push_front(item);
      ++m_unread;
      lock.unlock();
      m_not_empty.notify_one();
  }

  void pop_back(value_type* pItem) {
      boost::mutex::scoped_lock lock(m_mutex);
      m_not_empty.wait(lock, boost::bind(&bounded_buffer<value_type>::is_not_empty, this));
      *pItem = m_container[--m_unread];
      lock.unlock();
      m_not_full.notify_one();
  }

private:
  bounded_buffer(const bounded_buffer&);              // Disabled copy constructor.
  bounded_buffer& operator = (const bounded_buffer&); // Disabled assign operator.

  bool is_not_empty() const { return m_unread > 0; }
  bool is_not_full() const { return m_unread < m_container.capacity(); }

  size_type m_unread;
  container_type m_container;
  boost::mutex m_mutex;
  boost::condition m_not_empty;
  boost::condition m_not_full;
}; //