Java DoubleAccumulator类代码示例

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本文整理汇总了Java中java.util.concurrent.atomic.DoubleAccumulator类的典型用法代码示例。如果您正苦于以下问题：Java DoubleAccumulator类的具体用法？Java DoubleAccumulator怎么用？Java DoubleAccumulator使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

DoubleAccumulator类属于java.util.concurrent.atomic包，在下文中一共展示了DoubleAccumulator类的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Java代码示例。

示例1: testAccumulateAndGetMT

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * accumulates by multiple threads produce correct result
 */
public void testAccumulateAndGetMT() {
    final int incs = 1000000;
    final int nthreads = 4;
    final ExecutorService pool = Executors.newCachedThreadPool();
    DoubleAccumulator a = new DoubleAccumulator(Double::max, 0.0);
    Phaser phaser = new Phaser(nthreads + 1);
    for (int i = 0; i < nthreads; ++i)
        pool.execute(new AccTask(a, phaser, incs));
    phaser.arriveAndAwaitAdvance();
    phaser.arriveAndAwaitAdvance();
    double expected = incs - 1;
    double result = a.get();
    assertEquals(expected, result);
    pool.shutdown();
}

开发者ID:campolake，项目名称:openjdk9，代码行数:19，代码来源:DoubleAccumulatorTest.java

示例2: run

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
public void run() {
	DoubleAccumulator offset = new DoubleAccumulator((a,b) -> {return a + b;}, 0.0);

	shotQueue.removeIf(s -> {
		offset.accumulate(s.decay());
		return s.ticksLeft == 0;
	});
	
	this.offset = offset;
	
	if (shotQueue.isEmpty()) {
		throw new RuntimeException("All done for now for this player");
	}
}

开发者ID:ProgrammerDan，项目名称:AddGun，代码行数:15，代码来源:ShotTracker.java

示例3: testDoubleAccumulator

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
static void testDoubleAccumulator() {
    DoubleBinaryOperator plus = (DoubleBinaryOperator & Serializable) (x, y) -> x + y;
    DoubleAccumulator a = new DoubleAccumulator(plus, 13.9d);
    a.accumulate(17.5d);
    DoubleAccumulator result = echo(a);
    if (result.get() != a.get())
        throw new RuntimeException("Unexpected value");
    a.reset();
    result.reset();
    if (result.get() != a.get())
        throw new RuntimeException("Unexpected value after reset");

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

开发者ID:lambdalab-mirror，项目名称:jdk8u-jdk，代码行数:15，代码来源:Serial.java

示例4: testConstructor

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * new instance initialized to supplied identity
 */
public void testConstructor() {
    for (double identity : new double[] {
             Double.NEGATIVE_INFINITY,
             Double.POSITIVE_INFINITY,
             Double.MIN_VALUE,
             Double.MAX_VALUE,
             0.0,
         })
        assertEquals(identity,
                     new DoubleAccumulator(Double::max, identity).get());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:15，代码来源:DoubleAccumulatorTest.java

示例5: testAccumulateAndGet

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * accumulate accumulates given value to current, and get returns current value
 */
public void testAccumulateAndGet() {
    DoubleAccumulator acc = new DoubleAccumulator(Double::max, 0.0);
    acc.accumulate(2.0);
    assertEquals(2.0, acc.get());
    acc.accumulate(-4.0);
    assertEquals(2.0, acc.get());
    acc.accumulate(4.0);
    assertEquals(4.0, acc.get());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:13，代码来源:DoubleAccumulatorTest.java

示例6: testReset

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * reset() causes subsequent get() to return zero
 */
public void testReset() {
    DoubleAccumulator acc = new DoubleAccumulator(Double::max, 0.0);
    acc.accumulate(2.0);
    assertEquals(2.0, acc.get());
    acc.reset();
    assertEquals(0.0, acc.get());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:11，代码来源:DoubleAccumulatorTest.java

示例7: testGetThenReset

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * getThenReset() returns current value; subsequent get() returns zero
 */
public void testGetThenReset() {
    DoubleAccumulator acc = new DoubleAccumulator(Double::max, 0.0);
    acc.accumulate(2.0);
    assertEquals(2.0, acc.get());
    assertEquals(2.0, acc.getThenReset());
    assertEquals(0.0, acc.get());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:11，代码来源:DoubleAccumulatorTest.java

示例8: testToString

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * toString returns current value.
 */
public void testToString() {
    DoubleAccumulator acc = new DoubleAccumulator(Double::max, 0.0);
    assertEquals("0.0", acc.toString());
    acc.accumulate(1.0);
    assertEquals(Double.toString(1.0), acc.toString());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:10，代码来源:DoubleAccumulatorTest.java

示例9: testIntValue

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * intValue returns current value.
 */
public void testIntValue() {
    DoubleAccumulator acc = new DoubleAccumulator(Double::max, 0.0);
    assertEquals(0, acc.intValue());
    acc.accumulate(1.0);
    assertEquals(1, acc.intValue());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:10，代码来源:DoubleAccumulatorTest.java

示例10: testLongValue

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * longValue returns current value.
 */
public void testLongValue() {
    DoubleAccumulator acc = new DoubleAccumulator(Double::max, 0.0);
    assertEquals(0, acc.longValue());
    acc.accumulate(1.0);
    assertEquals(1, acc.longValue());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:10，代码来源:DoubleAccumulatorTest.java

示例11: testFloatValue

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * floatValue returns current value.
 */
public void testFloatValue() {
    DoubleAccumulator acc = new DoubleAccumulator(Double::max, 0.0);
    assertEquals(0.0f, acc.floatValue());
    acc.accumulate(1.0);
    assertEquals(1.0f, acc.floatValue());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:10，代码来源:DoubleAccumulatorTest.java

示例12: testDoubleValue

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * doubleValue returns current value.
 */
public void testDoubleValue() {
    DoubleAccumulator acc = new DoubleAccumulator(Double::max, 0.0);
    assertEquals(0.0, acc.doubleValue());
    acc.accumulate(1.0);
    assertEquals(1.0, acc.doubleValue());
}

开发者ID:AdoptOpenJDK，项目名称:openjdk-jdk10，代码行数:10，代码来源:DoubleAccumulatorTest.java

示例13: testAccumulateAndGet

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * accumulate accumulates given value to current, and get returns current value
 */
public void testAccumulateAndGet() {
    DoubleAccumulator ai = new DoubleAccumulator(Double::max, 0.0);
    ai.accumulate(2.0);
    assertEquals(2.0, ai.get());
    ai.accumulate(-4.0);
    assertEquals(2.0, ai.get());
    ai.accumulate(4.0);
    assertEquals(4.0, ai.get());
}

开发者ID:campolake，项目名称:openjdk9，代码行数:13，代码来源:DoubleAccumulatorTest.java

示例14: testReset

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * reset() causes subsequent get() to return zero
 */
public void testReset() {
    DoubleAccumulator ai = new DoubleAccumulator(Double::max, 0.0);
    ai.accumulate(2.0);
    assertEquals(2.0, ai.get());
    ai.reset();
    assertEquals(0.0, ai.get());
}

开发者ID:campolake，项目名称:openjdk9，代码行数:11，代码来源:DoubleAccumulatorTest.java

示例15: testGetThenReset

import java.util.concurrent.atomic.DoubleAccumulator; //导入依赖的package包/类
/**
 * getThenReset() returns current value; subsequent get() returns zero
 */
public void testGetThenReset() {
    DoubleAccumulator ai = new DoubleAccumulator(Double::max, 0.0);
    ai.accumulate(2.0);
    assertEquals(2.0, ai.get());
    assertEquals(2.0, ai.getThenReset());
    assertEquals(0.0, ai.get());
}

开发者ID:campolake，项目名称:openjdk9，代码行数:11，代码来源:DoubleAccumulatorTest.java