question: public boolean isIdleExpire ( ) { if ( ! _lifecycle . isActive ( ) ) return true ; long now = currentTimeActual ( ) ; long idleExpire = _threadIdleExpireTime . get ( ) ; int idleCount = _idleCount . get ( ) ; if ( _idleMin < idleCount ) { long nextIdleExpire = now + _idleTimeout ; if ( _idleMax < idleCount && _idleMin < _idleMax ) { _threadIdleExpireTime . compareAndSet ( idleExpire , nextIdleExpire ) ; return true ; } else if ( idleExpire < now && _threadIdleExpireTime . compareAndSet ( idleExpire , nextIdleExpire ) ) { return true ; } } return false ; }
target:  Returns true if the thread should expire instead of going to the idle state.