Examples with Fiber co.paralleluniverse.fibers.Fiber used on opensource projects

Example 96 with Fiber

use of co.paralleluniverse.fibers.Fiber in project quasar by puniverse.

the class Pipeline method parallelTransfer.

private void parallelTransfer() throws SuspendExecution, InterruptedException {
    // 1) Fire workers
    for (int i = 0; i < parallelism; i++) {
        strandFactory.newStrand(SuspendableUtils.runnableToCallable(new SuspendableRunnable() {

            @Override
            public void run() throws SuspendExecution, InterruptedException {
                // Get first job
                Pair<S, Channel<Channel<T>>> job = jobs.receive();
                while (job != null) {
                    // Build result channel
                    final Channel<T> res = resultChannelBuilder.run();
                    // Process
                    transformer.call(job.getFirst(), res);
                    final Channel<Channel<T>> resWrapper = job.getSecond();
                    // Send result asynchronously
                    strandFactory.newStrand(SuspendableUtils.runnableToCallable(new SuspendableRunnable() {

                        @Override
                        public void run() throws SuspendExecution, InterruptedException {
                            resWrapper.send(res);
                        }
                    })).start();
                    // Get next job
                    job = jobs.receive();
                }
                // No more jobs, close results channel and quit worker
                results.close();
            }
        })).start();
    }
    // 2) Send jobs asynchronously
    strandFactory.newStrand(SuspendableUtils.runnableToCallable(new SuspendableRunnable() {

        @Override
        public void run() throws SuspendExecution, InterruptedException {
            // Get first input
            S s = from.receive();
            while (s != null) {
                final Channel<Channel<T>> resultWrapper = Channels.newChannel(1, Channels.OverflowPolicy.BLOCK, true, true);
                jobs.send(new Pair<>(s, resultWrapper));
                results.send(resultWrapper);
                // Get next input
                s = from.receive();
            }
            // No more inputs, close jobs channel and quit
            jobs.close();
        }
    })).start();
    // 3) Collect and transfer results asynchronously
    try {
        final Strand collector = strandFactory.newStrand(SuspendableUtils.runnableToCallable(new SuspendableRunnable() {

            @Override
            public void run() throws SuspendExecution, InterruptedException {
                // Get first result
                Channel<Channel<T>> resWrapper = results.receive();
                while (resWrapper != null) {
                    // Get wrapper
                    Channel<T> res = resWrapper.receive();
                    // Get first actual result
                    T out = res.receive();
                    while (out != null) {
                        // Send to output channel
                        to.send(out);
                        // Increment counter
                        transferred.incrementAndGet();
                        // Get next result
                        out = res.receive();
                    }
                    resWrapper = results.receive();
                }
            // No more results, quit
            }
        })).start();
        // TODO solve nasty instrumentation problems on Strand.join()
        if (collector.isFiber()) {
            Fiber f = (Fiber) collector.getUnderlying();
            f.join();
        } else
            collector.join();
    } catch (ExecutionException ee) {
        throw new AssertionError(ee);
    }
}

Example 97 with Fiber

use of co.paralleluniverse.fibers.Fiber in project quasar by puniverse.

the class StrandFactoryBuilder method build.

/**
 * Creates and returns the {@link StrandFactory} that will create new strands based on this builder's settings.
 *
 * @return a new {@link StrandFactory}.
 */
public StrandFactory build() {
    if (fiber == null)
        throw new IllegalStateException("setFiber or setThread must be called before calling build");
    final boolean _fiber = fiber;
    final boolean _daemon = daemon;
    final FiberScheduler _fs = fs;
    final String _nameFormat = nameFormat;
    final Strand.UncaughtExceptionHandler _ueh = ueh;
    final int _stackSize = stackSize != null ? stackSize : 0;
    final Integer _priority = priority;
    final AtomicLong _count = (nameFormat != null) ? new AtomicLong(0) : null;
    return new StrandFactory() {

        @Override
        public Strand newStrand(SuspendableCallable<?> target) {
            final String name = _nameFormat != null ? String.format(_nameFormat, _count.getAndIncrement()) : null;
            final Strand s;
            if (_fiber) {
                s = _fs != null ? new Fiber(name, _fs, _stackSize, target) : new Fiber(name, _stackSize, target);
            } else {
                final Thread t = new Thread(null, Strand.toRunnable(target), name != null ? name : "Thread-" + nextThreadNum(), _stackSize);
                if (name != null)
                    t.setName(name);
                t.setDaemon(_daemon);
                if (_priority != null)
                    t.setPriority(_priority);
                s = Strand.of(t);
            }
            if (_ueh != null)
                s.setUncaughtExceptionHandler(_ueh);
            return s;
        }
    };
}

Example 98 with Fiber

use of co.paralleluniverse.fibers.Fiber in project quasar by puniverse.

the class InitialSizeTest method testWithSize.

private void testWithSize(int stackSize) {
    Fiber c = new Fiber(null, null, stackSize, this);
    // assertEquals(getStackSize(c), stackSize);
    boolean res = TestsHelper.exec(c);
    assertEquals(res, false);
    res = TestsHelper.exec(c);
    assertEquals(res, true);
    assertTrue(getStackSize(c) > 10);
}

Example 99 with Fiber

use of co.paralleluniverse.fibers.Fiber in project quasar by puniverse.

the class InterfaceTest method testSuspend.

@Test
public void testSuspend() {
    // final I i = new C();
    Fiber co = new Fiber((String) null, null, new SuspendableRunnable() {

        @Override
        public final void run() throws SuspendExecution {
            // next line causes an error because of incomplete merge in TypeInterpreter
            // SomeInterface i = System.currentTimeMillis() > 0 ? new C() : new C2();
            SomeInterface i = new C();
            System.out.println("i = " + i);
            i.doStuff();
        }
    });
    while (!TestsHelper.exec(co)) System.out.println("State=" + co.getState());
    System.out.println("State=" + co.getState());
}

Example 100 with Fiber

use of co.paralleluniverse.fibers.Fiber in project quasar by puniverse.

the class LeakTest method leaky.

@Test
public void leaky() throws Exception {
    Fiber co = new Fiber((String) null, null, this);
    leaked = "leaked";
    TestsHelper.exec(co);
    TestsHelper.exec(co);
    TestsHelper.exec(co);
    Field stackField = Fiber.class.getDeclaredField("stack");
    stackField.setAccessible(true);
    Field objectsField = Stack.class.getDeclaredField("dataObject");
    objectsField.setAccessible(true);
    List<Object> stack = Arrays.asList((Object[]) objectsField.get(stackField.get(co)));
    // System.out.println(stack);
    assertThat(stack, not(hasItem(leaked)));
// assertThat(stack, everyItem(nullValue()));
// WeakReference<String> ref = new WeakReference<>(leaked);
// leaked = null;
// System.gc();
// System.gc();
// assertNull(ref.get());
}