public boolean tryLock(long nanos) throws InterruptedException {
if (Thread.interrupted()) throw new InterruptedException();
Thread caller = Thread.currentThread();
synchronized (this) {
if (owner_ == null) {
owner_ = caller;
holds_ = 1;
return true;
} else if (caller == owner_) {
incHolds();
return true;
}
}
WaitQueue.WaitNode n = new WaitQueue.WaitNode();
return n.doTimedWait(this, nanos);
}
