/**
* @return if <0, then this pipe should be stopped. If ==0, it should not wait. If >0, if it
* should wait
*/
int execute() {
if (!lock.tryAcquire()) return 1; // currently being accessed
Thread myThread = Thread.currentThread();
int threadIndex = -1;
for (int i = 0; i < threads.length; i++) {
if (threads[i] == null) {
threads[i] = myThread;
threadIndex = i;
break;
}
if (myThread != threads[i]) continue;
threadIndex = i;
break;
}
Signal signal;
if (threadIndex < 0) {
signal = dummySignal;
} else {
SignalImpl s = signals[threadIndex];
s.threadIndex = threadIndex;
s.signaled = false;
signal = s;
}
boolean hasData;
try {
hasData = poll(signal, null);
} finally {
signal.signal();
if (threadIndex < 0) lock.release();
}
return 0;
}
@Override
@SuppressWarnings({"unchecked"})
public void shutdown(long time, TimeUnit unit) {
started = false;
try {
lock.tryAcquire(time, unit);
} catch (InterruptedException e) {
logger.warn("shutdown", e);
}
if (group != null) group.interrupt();
consumers = new Consumer[0];
consumerSeqs = new long[0];
outUse = new AtomicLongArray(0);
executor.shutdown();
}
@Override
public boolean setConsumers(List<Consumer<S>> list, long time, TimeUnit unit)
throws IllegalArgumentException {
if (list == null) throw new IllegalArgumentException("consumer list is not set");
for (Consumer<S> consumer : list) {
if (consumer == null) throw new IllegalArgumentException("consumer is null");
}
try {
if (!lock.tryAcquire(time, unit)) throw new IllegalArgumentException("can't lock producer");
} catch (InterruptedException e) {
return false;
}
try {
return setConsumers(list);
} catch (InterruptedException e) {
logger.warn("setting consumer", e);
} finally {
lock.release();
}
return false;
}