public void run() {
producer.getReady();
MyBlockingQueue<Integer> buffer = producer.getBuffer();
Integer item = buffer.take();
while (item != null) {
System.out.println(this + " fetches " + item + ".");
Thread.yield();
item = buffer.take();
}
}
public static void main(String[] args) throws InterruptedException {
final int NUM = 10;
Producer producer = new Producer(10);
Consumer[] consumers = new Consumer[NUM];
for (int i = 0; i < NUM; i++) {
consumers[i] = new Consumer(producer);
}
System.out.println("\t== START ==");
producer.start();
for (int i = 0; i < NUM; i++) {
consumers[i].join();
}
System.out.println("\t== OVER ==");
}
/**
* Create a fat pipe using the threads from the parent
*
* @param producer the producer
* @param pool the group of pipes to add to
*/
public PooledFatPipe(Producer<T, S> producer, Pool pool, ExceptionListener listener) {
this.producer = producer;
this.listener = listener;
this.pool = pool;
name = producer.getClass().getSimpleName();
lock = new Semaphore(0);
}
/**
* Look for data from all the inputs
*
* @return true if data was consumed
*/
private boolean poll(Signal signal, Signal parent) {
AtomicReferenceArray<T> o = outputs;
for (int i = 0; i < o.length(); i++) {
T input = o.getAndSet(i, null);
if (input == null) continue;
long seq = ++sequence;
if (parent != null) parent.signal();
S product = producer.execute(input, reuseReceptors.get(i), signal);
signal.signal();
if (!consume(product, seq, 0)) {
Thread.yield();
if (!consume(product, seq, 0))
logger.info(
"failed to consume product (" + product + ") from producer (" + producer + ")");
}
producer.complete(product);
return product != null;
}
return false;
}
/**
* Create fat pipe using several threads
*
* @param producer the producer
* @param poolSize the size of the thread group.
*/
public PooledFatPipe(Producer<T, S> producer, int poolSize, ExceptionListener listener) {
this(producer, poolSize, listener, producer.getClass().getSimpleName());
}