org.jctools.queues.MpmcArrayQueue Java Examples

The following examples show how to use org.jctools.queues.MpmcArrayQueue. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: MpmcPollTest.java    From akarnokd-misc with Apache License 2.0 6 votes vote down vote up 
@Test
public void unsafe() {
    for (int i = 0; i < 100000; i++) {
        MpmcArrayQueue<Integer> q = new MpmcArrayQueue<>(128);
        
        q.offer(1);
        
        Integer[] result = new Integer[] { 2, 2 };

        race(() -> {
            result[0] = q.poll();
        }, () -> {
            result[1] = q.poll();
        }, exec);
        
        assertTrue(Arrays.toString(result), (result[0] == null && result[1] == 1) || (result[0] == 1 && result[1] == null));
    }
}
Example #2
Source File: MpmcBenchmark.java    From tutorials with MIT License 6 votes vote down vote up 
@Setup(Level.Trial)
public void setUp() {
    switch (implementation) {
        case PARAM_UNSAFE:
            queue = new MpmcArrayQueue<>(CAPACITY);
            break;
        case PARAM_AFU:
            queue = new MpmcAtomicArrayQueue<>(CAPACITY);
            break;
        case PARAM_JDK:
            queue = new ArrayBlockingQueue<>(CAPACITY);
            break;
        default:
            throw new UnsupportedOperationException("Unsupported implementation " + implementation);
    }
}
Example #3
Source File: ObjectPoolBenchmark.java    From apm-agent-java with Apache License 2.0 5 votes vote down vote up 
@Setup
public void setUp() {
    tracer = new ElasticApmTracerBuilder().buildAndStart();
    blockingQueueObjectPool = QueueBasedObjectPool.ofRecyclable(new ArrayBlockingQueue<>(256), true, () -> new Transaction(tracer));
    jctoolsQueueObjectPool = QueueBasedObjectPool.ofRecyclable(new MpmcArrayQueue<>(256), true, () -> new Transaction(tracer));
    jctoolsAtomicQueueObjectPool = QueueBasedObjectPool.ofRecyclable(new MpmcAtomicArrayQueue<>(256), true, () -> new Transaction(tracer));
    agronaQueueObjectPool = QueueBasedObjectPool.ofRecyclable(new ManyToManyConcurrentArrayQueue<>(256), true, () -> new Transaction(tracer));
    threadLocalObjectPool = new ThreadLocalObjectPool<>(64, true, () -> new Transaction(tracer));
}
Example #4
Source File: MpmcArrayBuffer.java    From caffeine with Apache License 2.0 4 votes vote down vote up 
MpmcArrayBuffer() {
  queue = new MpmcArrayQueue<>(BUFFER_SIZE);
}
Example #5
Source File: ThreadLocalVsPoolBenchmark.java    From logging-log4j2 with Apache License 2.0 4 votes vote down vote up 
private JcPool(final int capacity) {
    this.stringBuilders = new MpmcArrayQueue<>(capacity);
}
Example #6
Source File: RecyclerFactories.java    From logging-log4j2 with Apache License 2.0 4 votes vote down vote up 
public static RecyclerFactory ofSpec(final String recyclerFactorySpec) {

        // Determine the default capacity.
        int defaultCapacity = Math.max(
                2 * Runtime.getRuntime().availableProcessors() + 1,
                8);

        // TLA-, MPMC-, or ABQ-based queueing factory -- if nothing is specified.
        if (recyclerFactorySpec == null) {
            if (Constants.ENABLE_THREADLOCALS) {
                return ThreadLocalRecyclerFactory.getInstance();
            } else {
                final Supplier<Queue<Object>> queueSupplier =
                        JCTOOLS_QUEUE_CLASS_AVAILABLE
                                ? () -> new MpmcArrayQueue<>(defaultCapacity)
                                : () -> new ArrayBlockingQueue<>(defaultCapacity);
                return new QueueingRecyclerFactory(queueSupplier);
            }
        }

        // Is a dummy factory requested?
        else if (recyclerFactorySpec.equals("dummy")) {
            return DummyRecyclerFactory.getInstance();
        }

        // Is a TLA factory requested?
        else if (recyclerFactorySpec.equals("threadLocal")) {
            return ThreadLocalRecyclerFactory.getInstance();
        }

        // Is a queueing factory requested?
        else if (recyclerFactorySpec.startsWith("queue")) {
            return readQueueingRecyclerFactory(recyclerFactorySpec, defaultCapacity);
        }

        // Bogus input, bail out.
        else {
            throw new IllegalArgumentException(
                    "invalid recycler factory: " + recyclerFactorySpec);
        }

    }