title: How does one make a boost::lockfree::queue be dynamically resizing
body: <p>The documentation for boost::lockfree::queue mentions that push can allocate more space if need be. However I can't for the life of me figure out how to instantiate such a queue and I can't find an example of it. All of the examples on boost's website are of fixed capacity.</p>
  
  <p>This is the documentation I was looking at:
  <a href="http://www.boost.org/doc/libs/1_54_0/doc/html/boost/lockfree/queue.html" rel="noreferrer">http://www.boost.org/doc/libs/1_54_0/doc/html/boost/lockfree/queue.html</a></p>