/**
* Queues error that will be thrown in any waiting thread or any thread that attempts to wait on
* this future hereafter.
*
* @param e the error
*/
public void error(Throwable e) {
lock();
try {
pendingEx = chainer.chain(e);
cond.signalAll();
} finally {
unlock();
}
}
/**
* Wait for {@code timeout} duration for this future's value to be set.
*
* @param timeout the timeout
* @param unit time unit for the timeout
* @return the value
* @throws T in case another thread informs the future of an error meanwhile, or the timeout
* expires
*/
public V get(long timeout, TimeUnit unit) throws T {
lock();
try {
if (pendingEx != null) throw pendingEx;
if (val != null) return val;
log.debug("Awaiting <<{}>>", name);
while (val == null && pendingEx == null)
if (timeout == 0) cond.await();
else if (!cond.await(timeout, unit))
throw chainer.chain(new TimeoutException("Timeout expired"));
if (pendingEx != null) {
log.error("<<{}>> woke to: {}", name, pendingEx.toString());
throw pendingEx;
}
return val;
} catch (InterruptedException ie) {
throw chainer.chain(ie);
} finally {
unlock();
}
}
