Java Code Examples for java.util.Collection#parallelStream()

The following examples show how to use java.util.Collection#parallelStream() . 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: ConcatTest.java From openjdk-jdk8u-backup with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 2

Source File: ConcatTest.java From jdk8u-dev-jdk with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 3

Source File: ConcatTest.java From jdk8u-jdk with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 4

Source File: ConcatTest.java From jdk8u_jdk with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 5

Source File: ConcatTest.java From openjdk-8 with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 6

Source File: ConcatTest.java From openjdk-8-source with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 7

Source File: ConcatTest.java From hottub with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 8

Source File: ConcatTest.java From jdk8u-jdk with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 9

Source File: ConcatTest.java From openjdk-jdk9 with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 10

Source File: ConcatTest.java From openjdk-jdk8u with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 11

Source File: JavaStreamQueryEngine.java From NNAnalytics with Apache License 2.0

6 votes

/**
 * Optimized filter method for filtering down a set of INodes to a smaller subset but returns a
 * Stream for further processing.
 *
 * @param inodes the main inode set to work on
 * @param filters set of filters to use
 * @param filterOps matching length set of filter operands and operators
 * @return the stream of filtered inodes
 */
@Override // QueryEngine
public Stream<INode> combinedFilterToStream(
    Collection<INode> inodes, String[] filters, String[] filterOps) {
  if (filters == null || filterOps == null || filters.length == 0 || filterOps.length == 0) {
    return inodes.parallelStream();
  }
  long start = System.currentTimeMillis();
  try {
    return produceFilteredStream(inodes, filters, filterOps);
  } finally {
    long end = System.currentTimeMillis();
    if (LOG.isDebugEnabled()) {
      LOG.debug(
          "Settings filters: {} with filterOps: {} took: {} ms.",
          Arrays.asList(filters),
          Arrays.asList(filterOps),
          (end - start));
    }
  }
}

Example 12

Source File: ConcatTest.java From jdk8u60 with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 13

Source File: ConcatTest.java From TencentKona-8 with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 14

Source File: ConcatTest.java From dragonwell8_jdk with GNU General Public License v2.0

6 votes

public ConcatTest(String scenario, Collection<Integer> c1, Collection<Integer> c2, Collection<Integer> expected) {
    this.scenario = scenario;
    this.c1 = c1;
    this.c2 = c2;
    this.expected = expected;

    // verify prerequisite
    Stream<Integer> s1s = c1.stream();
    Stream<Integer> s2s = c2.stream();
    Stream<Integer> s1p = c1.parallelStream();
    Stream<Integer> s2p = c2.parallelStream();
    assertTrue(s1p.isParallel());
    assertTrue(s2p.isParallel());
    assertFalse(s1s.isParallel());
    assertFalse(s2s.isParallel());

    assertTrue(s1s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s1p.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2s.spliterator().hasCharacteristics(Spliterator.ORDERED));
    assertTrue(s2p.spliterator().hasCharacteristics(Spliterator.ORDERED));
}

Example 15

Source File: InlineRProcessor.java From shrinker with Apache License 2.0

5 votes

private static <T extends QualifiedContent> Stream<T> streamOf(
        Collection<TransformInput> inputs,
        Function<TransformInput, Collection<T>> mapping) {
    Collection<T> list = inputs.stream()
            .map(mapping)
            .flatMap(Collection::stream)
            .collect(Collectors.toList());
    if (list.size() >= Runtime.getRuntime().availableProcessors())
        return list.parallelStream();
    else
        return list.stream();
}

Example 16

Source File: AbstractQueryEngine.java From NNAnalytics with Apache License 2.0

5 votes

/**
 * Perform the find operation on a /filter endpoint call.
 *
 * @param inodes set of inodes to work on
 * @param find the find operation to perform
 * @return the result of the find operation
 */
@Override // QueryEngine
public Collection<INode> findFilter(Collection<INode> inodes, String find) {
  if (find == null || find.isEmpty()) {
    return inodes;
  }

  String[] findOps = find.split(":");
  Function<INode, Long> findToLong = getFilterFunctionToLongForINode(findOps[1]);

  long start = System.currentTimeMillis();
  Optional<INode> optional;
  try {
    Stream<INode> stream = inodes.parallelStream();
    switch (findOps[0]) {
      case "max":
        optional = stream.max(Comparator.comparingLong(findToLong::apply));
        break;
      case "min":
        optional = stream.min(Comparator.comparingLong(findToLong::apply));
        break;
      default:
        throw new IllegalArgumentException("Unknown find query type: " + findOps[0]);
    }
  } finally {
    long end = System.currentTimeMillis();
    LOG.info("Performing find: {} took: {} ms.", Arrays.asList(findOps), (end - start));
  }

  return optional.<Collection<INode>>map(Collections::singleton).orElseGet(Collections::emptySet);
}

Example 17

Source File: Helper.java From NNAnalytics with Apache License 2.0

5 votes

/**
 * Utility method for setting up filtering against NameNode.
 *
 * @param nameNodeLoader the NameNodeLoader
 * @param set whether set of files or dirs
 * @param filters the filter types
 * @param filterOps the filter operations
 * @return the inodes collection that passed the filter
 */
public static Stream<INode> setFilters(
    NameNodeLoader nameNodeLoader, String set, String[] filters, String[] filterOps) {
  Collection<INode> inodes = nameNodeLoader.getINodeSet(set);

  if (filters == null || filters.length == 0 || filterOps == null || filterOps.length == 0) {
    return inodes.parallelStream();
  }

  return nameNodeLoader.getQueryEngine().combinedFilterToStream(inodes, filters, filterOps);
}

Example 18

Source File: CompilationUnit.java From groovy with Apache License 2.0

5 votes

private void buildASTs() {
    Boolean bpe = configuration.getOptimizationOptions().get(CompilerConfiguration.PARALLEL_PARSE);
    boolean parallelParseEnabled = null != bpe && bpe;

    Collection<SourceUnit> sourceUnits = sources.values();
    Stream<SourceUnit> sourceUnitStream =
            (!parallelParseEnabled || sourceUnits.size() < 2)
                    ? sourceUnits.stream() // no need to build AST with parallel stream when we just have one/no source unit
                    : sourceUnits.parallelStream();

    // DON'T replace `collect(Collectors.counting())` with `count()` here, otherwise peek will NOT be triggered
    sourceUnitStream.peek(SourceUnit::buildAST).collect(Collectors.counting());
}

Example 19

Source File: DistributedService.java From apicurio-registry with Apache License 2.0

4 votes

protected final Stream<S> allServicesForStoreStream() {
    Collection<S> services = allServicesForStore();
    // call multiple services in parallel if requested and there are more than one
    return parallel && services.size() > 1 ? services.parallelStream() : services.stream();
}

Example 20

Source File: DistributedService.java From apicurio-registry with Apache License 2.0

4 votes

protected final Stream<S> allServicesStream() {
    Collection<S> services = allServices();
    // call multiple services in parallel if requested and there are more than one
    return parallel && services.size() > 1 ? services.parallelStream() : services.stream();
}