Examples with LongAdder java.util.concurrent.atomic.LongAdder used on opensource projects

Example 1 with LongAdder

use of java.util.concurrent.atomic.LongAdder in project mapdb by jankotek.

the class ConcurrentHashMap8Test method testForEachKeyInParallel.

/**
     * forEachKeyInParallel traverses all keys
     */
public void testForEachKeyInParallel() {
    LongAdder adder = new LongAdder();
    ConcurrentHashMap<Long, Long> m = longMap();
    m.forEachKey(1L, (Long x) -> adder.add(x.longValue()));
    assertEquals(adder.sum(), SIZE * (SIZE - 1) / 2);
}

Example 2 with LongAdder

use of java.util.concurrent.atomic.LongAdder in project mapdb by jankotek.

the class ConcurrentHashMap8Test method testForEachEntrySequentially.

/**
     * forEachEntrySequentially traverses all entries
     */
public void testForEachEntrySequentially() {
    LongAdder adder = new LongAdder();
    ConcurrentHashMap<Long, Long> m = longMap();
    m.forEachEntry(Long.MAX_VALUE, (Map.Entry<Long, Long> e) -> adder.add(e.getKey().longValue() + e.getValue().longValue()));
    assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
}

Example 3 with LongAdder

use of java.util.concurrent.atomic.LongAdder in project mapdb by jankotek.

the class ConcurrentHashMap8Test method testForEachInParallel.

/**
     * forEachInParallel traverses all mappings
     */
public void testForEachInParallel() {
    LongAdder adder = new LongAdder();
    ConcurrentHashMap<Long, Long> m = longMap();
    m.forEach(1L, (Long x, Long y) -> adder.add(x.longValue() + y.longValue()));
    assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
}

Example 4 with LongAdder

use of java.util.concurrent.atomic.LongAdder in project mapdb by jankotek.

the class ConcurrentHashMap8Test method testForEachEntryInParallel.

/**
     * forEachEntryInParallel traverses all entries
     */
public void testForEachEntryInParallel() {
    LongAdder adder = new LongAdder();
    ConcurrentHashMap<Long, Long> m = longMap();
    m.forEachEntry(1L, (Map.Entry<Long, Long> e) -> adder.add(e.getKey().longValue() + e.getValue().longValue()));
    assertEquals(adder.sum(), 3 * SIZE * (SIZE - 1) / 2);
}

Example 5 with LongAdder

use of java.util.concurrent.atomic.LongAdder in project mapdb by jankotek.

the class ConcurrentHashMap8Test method testMappedForEachKeyInParallel.

/**
     * Mapped forEachKeyInParallel traverses the given
     * transformations of all keys
     */
public void testMappedForEachKeyInParallel() {
    LongAdder adder = new LongAdder();
    ConcurrentHashMap<Long, Long> m = longMap();
    m.forEachKey(1L, (Long x) -> Long.valueOf(4 * x.longValue()), (Long x) -> adder.add(x.longValue()));
    assertEquals(adder.sum(), 4 * SIZE * (SIZE - 1) / 2);
}