java.util.concurrent.atomic.DoubleAdder#add()源码实例Demo

public void run() {
    phaser.arriveAndAwaitAdvance();
    phaser.arriveAndAwaitAdvance();
    DoubleAdder a = adder;
    for (int i = 0; i < incs; ++i)
        a.add(1.0);
    result = a.sum();
    phaser.arrive();
}
 

public void run() {
    phaser.arriveAndAwaitAdvance();
    phaser.arriveAndAwaitAdvance();
    DoubleAdder a = adder;
    for (int i = 0; i < incs; ++i)
        a.add(1.0);
    result = a.sum();
    phaser.arrive();
}
 

static void testDoubleAdder() {
    DoubleAdder a = new DoubleAdder();
    a.add(20.1d);
    DoubleAdder result = echo(a);
    if (result.doubleValue() != a.doubleValue())
        throw new RuntimeException("Unexpected doubleValue");

    checkSerialClassName(a, "java.util.concurrent.atomic.DoubleAdder$SerializationProxy");
}
 

/**
 * intValue returns current value.
 */
public void testIntValue() {
    DoubleAdder ai = new DoubleAdder();
    assertEquals(0, ai.intValue());
    ai.add(1.0);
    assertEquals(1, ai.intValue());
}
 

public void run() {
    phaser.arriveAndAwaitAdvance();
    phaser.arriveAndAwaitAdvance();
    DoubleAdder a = adder;
    for (int i = 0; i < incs; ++i)
        a.add(1.0);
    result = a.sum();
    phaser.arrive();
}
 

static void testDoubleAdder() {
    DoubleAdder a = new DoubleAdder();
    a.add(20.1d);
    DoubleAdder result = echo(a);
    if (result.doubleValue() != a.doubleValue())
        throw new RuntimeException("Unexpected doubleValue");

    checkSerialClassName(a, "java.util.concurrent.atomic.DoubleAdder$SerializationProxy");
}
 

public void run() {
    phaser.arriveAndAwaitAdvance();
    phaser.arriveAndAwaitAdvance();
    DoubleAdder a = adder;
    for (int i = 0; i < incs; ++i)
        a.add(1.0);
    result = a.sum();
    phaser.arrive();
}
 

/**
 * toString returns current value.
 */
public void testToString() {
    DoubleAdder ai = new DoubleAdder();
    assertEquals(Double.toString(0.0), ai.toString());
    ai.add(1.0);
    assertEquals(Double.toString(1.0), ai.toString());
}
 

static void testDoubleAdder() {
    DoubleAdder a = new DoubleAdder();
    a.add(20.1d);
    DoubleAdder result = echo(a);
    if (result.doubleValue() != a.doubleValue())
        throw new RuntimeException("Unexpected doubleValue");

    checkSerialClassName(a, "java.util.concurrent.atomic.DoubleAdder$SerializationProxy");
}
 

static void testDoubleAdder() {
    DoubleAdder a = new DoubleAdder();
    a.add(20.1d);
    DoubleAdder result = echo(a);
    if (result.doubleValue() != a.doubleValue())
        throw new RuntimeException("Unexpected doubleValue");

    checkSerialClassName(a, "java.util.concurrent.atomic.DoubleAdder$SerializationProxy");
}
 

public void run() {
    phaser.arriveAndAwaitAdvance();
    phaser.arriveAndAwaitAdvance();
    DoubleAdder a = adder;
    for (int i = 0; i < incs; ++i)
        a.add(1.0);
    result = a.sum();
    phaser.arrive();
}
 

static void testDoubleAdder() {
    DoubleAdder a = new DoubleAdder();
    a.add(20.1d);
    DoubleAdder result = echo(a);
    if (result.doubleValue() != a.doubleValue())
        throw new RuntimeException("Unexpected doubleValue");

    checkSerialClassName(a, "java.util.concurrent.atomic.DoubleAdder$SerializationProxy");
}
 

public void run() {
    phaser.arriveAndAwaitAdvance();
    phaser.arriveAndAwaitAdvance();
    DoubleAdder a = adder;
    for (int i = 0; i < incs; ++i)
        a.add(1.0);
    result = a.sum();
    phaser.arrive();
}
 

static void testDoubleAdder() {
    DoubleAdder a = new DoubleAdder();
    a.add(20.1d);
    DoubleAdder result = echo(a);
    if (result.doubleValue() != a.doubleValue())
        throw new RuntimeException("Unexpected doubleValue");

    checkSerialClassName(a, "java.util.concurrent.atomic.DoubleAdder$SerializationProxy");
}
 

/**
 * add adds given value to current, and sum returns current value
 */
public void testAddAndSum() {
    DoubleAdder ai = new DoubleAdder();
    ai.add(2.0);
    assertEquals(2.0, ai.sum());
    ai.add(-4.0);
    assertEquals(-2.0, ai.sum());
}
 

/**
 * reset() causes subsequent sum() to return zero
 */
public void testReset() {
    DoubleAdder ai = new DoubleAdder();
    ai.add(2.0);
    assertEquals(2.0, ai.sum());
    ai.reset();
    assertEquals(0.0, ai.sum());
}
 

/**
 * sumThenReset() returns sum; subsequent sum() returns zero
 */
public void testSumThenReset() {
    DoubleAdder ai = new DoubleAdder();
    ai.add(2.0);
    assertEquals(2.0, ai.sum());
    assertEquals(2.0, ai.sumThenReset());
    assertEquals(0.0, ai.sum());
}
 

/**
 * add adds given value to current, and sum returns current value
 */
public void testAddAndSum() {
    DoubleAdder ai = new DoubleAdder();
    ai.add(2.0);
    assertEquals(2.0, ai.sum());
    ai.add(-4.0);
    assertEquals(-2.0, ai.sum());
}
 

public void run() {
    phaser.arriveAndAwaitAdvance();
    phaser.arriveAndAwaitAdvance();
    DoubleAdder a = adder;
    for (int i = 0; i < incs; ++i)
        a.add(1.0);
    result = a.sum();
    phaser.arrive();
}
 

/**
 * doubleValue returns current value.
 */
public void testDoubleValue() {
    DoubleAdder ai = new DoubleAdder();
    assertEquals(0.0, ai.doubleValue());
    ai.add(1.0);
    assertEquals(1.0, ai.doubleValue());
}