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// Copyright (C) by Josh Blum. See LICENSE.txt for licensing information.
#ifndef INCLUDED_GRAS_BUFFER_QUEUE_HPP
#define INCLUDED_GRAS_BUFFER_QUEUE_HPP
#include <gras/gras.hpp>
#include <gras/sbuffer.hpp>
#include <boost/shared_ptr.hpp>
namespace gras
{
struct BufferQueue;
typedef boost::shared_ptr<BufferQueue> BufferQueueSptr;
//! Buffer Queue is an interface enabling us to create custom buffer allocators.
struct BufferQueue
{
//! Create a buffer queue using the pool allocator
GRAS_API static BufferQueueSptr make_pool(const SBufferConfig &config, const size_t num_buffs);
//! Create a buffer queue using the circular buffer allocator
GRAS_API static BufferQueueSptr make_circ(const SBufferConfig &config);
//! Get a reference to the buffer at the front of the queue
virtual SBuffer &front(void) = 0;
//! Pop off the used portion of the queue
virtual void pop(void) = 0;
//! Push a used buffer back into the queue
virtual void push(const SBuffer &buff) = 0;
//! Is the queue empty?
virtual bool empty(void) const = 0;
};
} //namespace gras
#endif /*INCLUDED_GRAS_BUFFER_QUEUE_HPP*/
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