question: @ Override public final K acquire ( ) { K ctx = null ; Reference < K > ref = null ; while ( ( ctx == null ) && ( ( ref = ctxQueue . poll ( ) ) != null ) ) { ctx = ref . get ( ) ; } if ( ctx == null ) { ctx = newContext ( ) ; ctx . usage = USAGE_CLQ ; } return ctx ; }
target:  Give a ReentrantContext instance for the current thread