Examples with ForkJoinPool java.util.concurrent.ForkJoinPool used on opensource projects

Example 6 with ForkJoinPool

use of java.util.concurrent.ForkJoinPool in project hadoop by apache.

the class FSDirectory method updateCountForQuota.

/**
   * Update the count of each directory with quota in the namespace.
   * A directory's count is defined as the total number inodes in the tree
   * rooted at the directory.
   *
   * This is an update of existing state of the filesystem and does not
   * throw QuotaExceededException.
   */
void updateCountForQuota(int initThreads) {
    writeLock();
    try {
        int threads = (initThreads < 1) ? 1 : initThreads;
        LOG.info("Initializing quota with " + threads + " thread(s)");
        long start = Time.now();
        QuotaCounts counts = new QuotaCounts.Builder().build();
        ForkJoinPool p = new ForkJoinPool(threads);
        RecursiveAction task = new InitQuotaTask(getBlockStoragePolicySuite(), rootDir.getStoragePolicyID(), rootDir, counts);
        p.execute(task);
        task.join();
        p.shutdown();
        LOG.info("Quota initialization completed in " + (Time.now() - start) + " milliseconds\n" + counts);
    } finally {
        writeUnlock();
    }
}

Example 7 with ForkJoinPool

use of java.util.concurrent.ForkJoinPool in project buck by facebook.

the class PythonLibraryDescriptionTest method versionedSrcs.

@Test
public void versionedSrcs() throws Exception {
    BuildTarget target = BuildTargetFactory.newInstance("//foo:lib");
    SourcePath matchedSource = new FakeSourcePath("foo/a.py");
    SourcePath unmatchedSource = new FakeSourcePath("foo/b.py");
    GenruleBuilder transitiveDepBuilder = GenruleBuilder.newGenruleBuilder(BuildTargetFactory.newInstance("//:tdep")).setOut("out");
    VersionedAliasBuilder depBuilder = new VersionedAliasBuilder(BuildTargetFactory.newInstance("//:dep")).setVersions(ImmutableMap.of(Version.of("1.0"), transitiveDepBuilder.getTarget(), Version.of("2.0"), transitiveDepBuilder.getTarget()));
    AbstractNodeBuilder<?, ?, ?> builder = new PythonLibraryBuilder(target).setVersionedSrcs(VersionMatchedCollection.<SourceList>builder().add(ImmutableMap.of(depBuilder.getTarget(), Version.of("1.0")), SourceList.ofUnnamedSources(ImmutableSortedSet.of(matchedSource))).add(ImmutableMap.of(depBuilder.getTarget(), Version.of("2.0")), SourceList.ofUnnamedSources(ImmutableSortedSet.of(unmatchedSource))).build());
    TargetGraph targetGraph = VersionedTargetGraphBuilder.transform(new FixedVersionSelector(ImmutableMap.of(builder.getTarget(), ImmutableMap.of(depBuilder.getTarget(), Version.of("1.0")))), TargetGraphAndBuildTargets.of(TargetGraphFactory.newInstance(transitiveDepBuilder.build(), depBuilder.build(), builder.build()), ImmutableSet.of(builder.getTarget())), new ForkJoinPool()).getTargetGraph();
    BuildRuleResolver resolver = new BuildRuleResolver(targetGraph, new DefaultTargetNodeToBuildRuleTransformer());
    PythonLibrary library = (PythonLibrary) resolver.requireRule(builder.getTarget());
    assertThat(library.getPythonPackageComponents(PythonTestUtils.PYTHON_PLATFORM, CxxPlatformUtils.DEFAULT_PLATFORM).getModules().values(), Matchers.contains(matchedSource));
}

Example 8 with ForkJoinPool

use of java.util.concurrent.ForkJoinPool in project jdk8u_jdk by JetBrains.

the class Integrate method main.

/**
     * Usage: Integrate [procs=N] [reps=N] forkPolicy=serial|dynamic|fork
     */
public static void main(String[] args) throws Exception {
    final int procs = intArg(args, "procs", Runtime.getRuntime().availableProcessors());
    final int forkPolicy = policyArg(args, "forkPolicy", DYNAMIC);
    ForkJoinPool g = new ForkJoinPool(procs);
    System.out.println("Integrating from " + start + " to " + end + " forkPolicy = " + forkPolicy);
    long lastTime = System.nanoTime();
    for (int reps = intArg(args, "reps", 10); reps > 0; reps--) {
        double a;
        if (forkPolicy == SERIAL)
            a = SQuad.computeArea(g, start, end);
        else if (forkPolicy == FORK)
            a = FQuad.computeArea(g, start, end);
        else
            a = DQuad.computeArea(g, start, end);
        long now = System.nanoTime();
        double s = (double) (now - lastTime) / NPS;
        lastTime = now;
        System.out.printf("Calls/sec: %12d", (long) (calls / s));
        System.out.printf(" Time: %7.3f", s);
        System.out.printf(" Area: %12.1f", a);
        System.out.println();
    }
    System.out.println(g);
    g.shutdown();
}

Example 9 with ForkJoinPool

use of java.util.concurrent.ForkJoinPool in project jdk8u_jdk by JetBrains.

the class SubmissionTest method main.

public static void main(String[] args) throws Throwable {
    final ForkJoinPool e = new ForkJoinPool(1);
    final AtomicBoolean b = new AtomicBoolean();
    final Runnable setFalse = () -> b.set(false);
    for (int i = 0; i < 100000; i++) {
        b.set(true);
        e.execute(setFalse);
        long st = System.nanoTime();
        while (b.get()) {
            if (System.nanoTime() - st >= TimeUnit.SECONDS.toNanos(10)) {
                throw new RuntimeException("Submitted task failed to execute");
            }
        }
    }
}

Example 10 with ForkJoinPool

use of java.util.concurrent.ForkJoinPool in project java8-tutorial by winterbe.

the class Streams12 method test1.

private static void test1() {
    // -Djava.util.concurrent.ForkJoinPool.common.parallelism=5
    ForkJoinPool commonPool = ForkJoinPool.commonPool();
    System.out.println(commonPool.getParallelism());
}