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

Example 41 with ThreadLocalRandom

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

the class ThreadLocalRandomTest method testUnsizedDoublesCountSeq.

/**
     * A sequential unsized stream of doubles generates at least 100 values
     */
public void testUnsizedDoublesCountSeq() {
    LongAdder counter = new LongAdder();
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 100;
    r.doubles().limit(size).forEach(x -> {
        counter.increment();
    });
    assertEquals(counter.sum(), size);
}

Example 42 with ThreadLocalRandom

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

the class ThreadLocalRandomTest method testUnsizedIntsCount.

/**
     * A parallel unsized stream of ints generates at least 100 values
     */
public void testUnsizedIntsCount() {
    LongAdder counter = new LongAdder();
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 100;
    r.ints().limit(size).parallel().forEach(x -> {
        counter.increment();
    });
    assertEquals(counter.sum(), size);
}

Example 43 with ThreadLocalRandom

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

the class ThreadLocalRandomTest method testUnsizedDoublesCount.

/**
     * A parallel unsized stream of doubles generates at least 100 values
     */
public void testUnsizedDoublesCount() {
    LongAdder counter = new LongAdder();
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 100;
    r.doubles().limit(size).parallel().forEach(x -> {
        counter.increment();
    });
    assertEquals(counter.sum(), size);
}

Example 44 with ThreadLocalRandom

use of java.util.concurrent.ThreadLocalRandom in project gerrit by GerritCodeReview.

the class SmtpEmailSender method generateMultipartBoundary.

public static String generateMultipartBoundary(String textBody, String htmlBody) throws EmailException {
    byte[] bytes = new byte[8];
    ThreadLocalRandom rng = ThreadLocalRandom.current();
    // suffice, something is seriously wrong.
    for (int i = 0; i < 2; i++) {
        rng.nextBytes(bytes);
        String boundary = BaseEncoding.base64().encode(bytes);
        String encBoundary = "--" + boundary;
        if (textBody.contains(encBoundary) || htmlBody.contains(encBoundary)) {
            continue;
        }
        return boundary;
    }
    throw new EmailException("Gave up generating unique MIME boundary");
}

Example 45 with ThreadLocalRandom

use of java.util.concurrent.ThreadLocalRandom in project Glowstone by GlowstoneMC.

the class BlockOre method getDrops.

public Collection<ItemStack> getDrops(GlowBlock block, ItemStack tool) {
    ThreadLocalRandom random = ThreadLocalRandom.current();
    int count = minCount;
    if (maxCount > minCount) {
        count += random.nextInt(maxCount - minCount);
    }
    ItemStack stack = new ItemStack(dropType, count, (short) data);
    if (tool == null) {
        return Collections.unmodifiableList(Arrays.asList(stack));
    }
    Collection<ItemStack> drops = super.getDrops(block, tool);
    if (drops.size() == 0) {
        return drops;
    }
    if (tool.containsEnchantment(Enchantment.LOOT_BONUS_BLOCKS)) {
        stack.setAmount(count * getMultiplicator(random, tool.getEnchantmentLevel(Enchantment.LOOT_BONUS_BLOCKS)));
    }
    return Collections.unmodifiableList(Arrays.asList(stack));
}