Search in sources :

Example 21 with LongAdder

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

the class ThreadLocalRandomTest method testLongsCount.

/**
 * A parallel sized stream of longs generates the given number of values
 */
public void testLongsCount() {
    LongAdder counter = new LongAdder();
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 0;
    for (int reps = 0; reps < REPS; ++reps) {
        counter.reset();
        r.longs(size).parallel().forEach(x -> {
            counter.increment();
        });
        assertEquals(counter.sum(), size);
        size += 524959;
    }
}
Also used : LongAdder(java8.util.concurrent.atomic.LongAdder) ThreadLocalRandom(java8.util.concurrent.ThreadLocalRandom)

Example 22 with LongAdder

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

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);
}
Also used : LongAdder(java8.util.concurrent.atomic.LongAdder) ThreadLocalRandom(java8.util.concurrent.ThreadLocalRandom)

Example 23 with LongAdder

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

the class ThreadLocalRandomTest method testIntsCount.

/**
 * A parallel sized stream of ints generates the given number of values
 */
public void testIntsCount() {
    LongAdder counter = new LongAdder();
    ThreadLocalRandom r = ThreadLocalRandom.current();
    long size = 0;
    for (int reps = 0; reps < REPS; ++reps) {
        counter.reset();
        r.ints(size).parallel().forEach(x -> {
            counter.increment();
        });
        assertEquals(counter.sum(), size);
        size += 524959;
    }
}
Also used : LongAdder(java8.util.concurrent.atomic.LongAdder) ThreadLocalRandom(java8.util.concurrent.ThreadLocalRandom)

Example 24 with LongAdder

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

the class ThreadLocalRandomTest 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(counter.sum(), size);
}
Also used : LongAdder(java8.util.concurrent.atomic.LongAdder) ThreadLocalRandom(java8.util.concurrent.ThreadLocalRandom)

Example 25 with LongAdder

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

the class SplittableRandomTest method testUnsizedDoublesCountSeq.

/**
 * A sequential unsized stream of doubles generates at least 100 values
 */
public void testUnsizedDoublesCountSeq() {
    final LongAdder counter = new LongAdder();
    SplittableRandom r = new SplittableRandom();
    long size = 100;
    r.doubles().limit(size).forEach(new DoubleConsumer() {

        @Override
        public void accept(double x) {
            counter.increment();
        }
    });
    assertEquals(counter.sum(), size);
}
Also used : DoubleConsumer(java8.util.function.DoubleConsumer) LongAdder(java8.util.concurrent.atomic.LongAdder) SplittableRandom(java8.util.SplittableRandom)

Aggregations

LongAdder (java8.util.concurrent.atomic.LongAdder)50 SplittableRandom (java8.util.SplittableRandom)18 ThreadLocalRandom (java8.util.concurrent.ThreadLocalRandom)18 DoubleConsumer (java8.util.function.DoubleConsumer)3 IntConsumer (java8.util.function.IntConsumer)3 LongConsumer (java8.util.function.LongConsumer)3 CyclicBarrier (java.util.concurrent.CyclicBarrier)1 ExecutorService (java.util.concurrent.ExecutorService)1 Phaser (java8.util.concurrent.Phaser)1