public void lockInterruptibly() throws InterruptedException { if (Thread.interrupted()) throw new InterruptedException(); Thread caller = Thread.currentThread(); synchronized (this) { if (owner_ == null) { owner_ = caller; holds_ = 1; return; } else if (caller == owner_) { incHolds(); return; } } WaitQueue.WaitNode n = new WaitQueue.WaitNode(); n.doWait(this); }