Java Code Examples for java.util.concurrent.ForkJoinPool#invokeAll()

The following examples show how to use java.util.concurrent.ForkJoinPool#invokeAll() . 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: KeyGeneratorTest.java    From syndesis with Apache License 2.0 6 votes vote down vote up 
@Test
public void testCreateKeyMultithreaded() {
    final int count = 100000;

    final Collection<Callable<String>> tasks = IntStream.range(0, count).boxed()
        .map(i -> (Callable<String>) () -> KeyGenerator.createKey()).collect(Collectors.toList());

    final ForkJoinPool pool = ForkJoinPool.commonPool();

    final List<Future<String>> results = pool.invokeAll(tasks);

    final Set<String> keys = results.stream().map(t -> {
        try {
            return t.get();
        } catch (InterruptedException | ExecutionException e) {
            throw new IllegalStateException(e);
        }
    }).collect(Collectors.toSet());

    Assert.assertEquals("If " + count + " key generations are performed in parallel, it should yield " + count
        + " of distinct keys", count, keys.size());
}
Example 2
Source File: ForkJoinPoolTest.java    From openjdk-jdk9 with GNU General Public License v2.0 5 votes vote down vote up 
/**
 * timed invokeAll(c) returns results of all completed tasks in c
 */
public void testTimedInvokeAll5() throws Throwable {
    ForkJoinPool e = new ForkJoinPool(1);
    try (PoolCleaner cleaner = cleaner(e)) {
        List<Callable<String>> l = new ArrayList<>();
        l.add(new StringTask());
        l.add(new StringTask());
        List<Future<String>> futures
            = e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
        assertEquals(2, futures.size());
        for (Future<String> future : futures)
            assertSame(TEST_STRING, future.get());
    }
}
Example 3
Source File: ForkJoinPoolTest.java    From j2objc with Apache License 2.0 5 votes vote down vote up 
/**
 * timed invokeAll(c) returns results of all completed tasks in c
 */
public void testTimedInvokeAll5() throws Throwable {
    ForkJoinPool e = new ForkJoinPool(1);
    try (PoolCleaner cleaner = cleaner(e)) {
        List<Callable<String>> l = new ArrayList<Callable<String>>();
        l.add(new StringTask());
        l.add(new StringTask());
        List<Future<String>> futures
            = e.invokeAll(l, LONG_DELAY_MS, MILLISECONDS);
        assertEquals(2, futures.size());
        for (Future<String> future : futures)
            assertSame(TEST_STRING, future.get());
    }
}
Example 4
Source File: ForkJoinPoolIT.java    From glowroot with Apache License 2.0 5 votes vote down vote up 
@Override
public void transactionMarker() throws Exception {
    ForkJoinPool pool = new ForkJoinPool();
    List<Callable<Void>> callables = Lists.newArrayList();
    callables.add(new SimpleCallable());
    callables.add(new SimpleCallable());
    callables.add(new SimpleCallable());
    for (Future<Void> future : pool.invokeAll(callables)) {
        future.get();
    }
}