/**
* @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
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;
}
@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();
}
public void start() {
inputs = new AtomicReferenceArray<>(0);
outputs = inputs;
freeReceptors = new CopyOnWriteArrayList<>();
sequence = 0;
finalSequence = 0;
finalProduct = null;
reuseReceptors = new ArrayList<>(0);
executor = Executors.newSingleThreadExecutor();
started = true;
if (poolSize > 0) {
group = new ThreadGroup("FatPipe");
group.setMaxPriority(Thread.MAX_PRIORITY);
}
signals = new SignalImpl[ARBITARY_THREADS + poolSize];
threads = new Thread[ARBITARY_THREADS + poolSize];
startTime = System.currentTimeMillis();
sleptTime = 0;
toSleepTime = 0;
for (int i = 0; i < poolSize; i++) {
Thread t = new Thread(group, this, name + "-" + i);
t.setDaemon(true);
threads[i] = t;
t.start();
if (sleep == 0) t.setPriority(Thread.MAX_PRIORITY);
else if (sleep < 0) t.setPriority(Thread.NORM_PRIORITY);
else t.setPriority(Thread.MIN_PRIORITY);
}
for (int i = 0; i < signals.length; i++) {
signals[i] = new SignalImpl(lock);
}
if (pool != null) pool.add(this);
lock.release();
}