title: Thread-Safe C/C++ queue optimized for push
body: <p>I am looking for a thread-safe C/C++ queue implementation that is optimized for the push operation.  I don't mind if the pop operation blocks but I would like to never be blocking on the push side.</p>
  
  <p>Let me explain why.  I am planning on writing a profiler for a C# application and I will have multiple threads pushing messages onto a single dispatcher thread.  I don't mind if the dispatcher blocks shortly, but I would like to avoid any delay on the push side.</p>