title: How shuold use yield in pthread()?
body: <p>For example I am doing active hyper-threading in my system, two threads are running in each core. </p>
  
  <p>Now my question is: </p>
  
  <p>When one of these thread calls <code>yield()</code> what happens? </p>
  
  <p>This is true in such situation use <code>yield()</code>.</p>