Examples with ThreadLocalRandom java8.util.concurrent.ThreadLocalRandom used on opensource projects

Example 36 with ThreadLocalRandom

use of java8.util.concurrent.ThreadLocalRandom in project streamsupport by stefan-zobel.

the class ThreadLocalRandom8Test method testBoundedInts.

/**
 * Each of a parallel sized stream of bounded ints is within bounds
 */
public void testBoundedInts() {
    AtomicInteger fails = new AtomicInteger(0);
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 12345L;
    for (int least = -15485867; least < MAX_INT_BOUND; least += 524959) {
        for (int bound = least + 2; bound > least && bound < MAX_INT_BOUND; bound += 67867967) {
            final int lo = least, hi = bound;
            r.ints(size, lo, hi).parallel().forEach(x -> {
                if (x < lo || x >= hi)
                    fails.getAndIncrement();
            });
        }
    }
    assertEquals(0, fails.get());
}

Example 37 with ThreadLocalRandom

use of java8.util.concurrent.ThreadLocalRandom in project streamsupport by stefan-zobel.

the class ThreadLocalRandom8Test 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(size, counter.sum());
}

Example 38 with ThreadLocalRandom

use of java8.util.concurrent.ThreadLocalRandom in project streamsupport by stefan-zobel.

the class ThreadLocalRandom8Test method testUnsizedIntsCountSeq.

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

Example 39 with ThreadLocalRandom

use of java8.util.concurrent.ThreadLocalRandom in project streamsupport by stefan-zobel.

the class ThreadLocalRandom8Test method testUnsizedLongsCount.

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

Example 40 with ThreadLocalRandom

use of java8.util.concurrent.ThreadLocalRandom in project streamsupport by stefan-zobel.

the class ThreadLocalRandom8Test 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(size, counter.sum());
}