Here are the examples of the java api class java.util.concurrent.atomic.DoubleAdder taken from open source projects.
1. DoubleAdderTest#testAddAndSumMT()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * adds by multiple threads produce correct sum */ public void testAddAndSumMT() throws Throwable { final int incs = 1000000; final int nthreads = 4; final ExecutorService pool = Executors.newCachedThreadPool(); DoubleAdder a = new DoubleAdder(); CyclicBarrier barrier = new CyclicBarrier(nthreads + 1); for (int i = 0; i < nthreads; ++i) pool.execute(new AdderTask(a, barrier, incs)); barrier.await(); barrier.await(); double total = (long) nthreads * incs; double sum = a.sum(); assertEquals(sum, total); pool.shutdown(); }
2. DoubleAdderTest#testSerialization()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * a deserialized serialized adder holds same value */ public void testSerialization() throws Exception { DoubleAdder x = new DoubleAdder(); DoubleAdder y = serialClone(x); assertNotSame(x, y); x.add(-22.0); DoubleAdder z = serialClone(x); assertEquals(-22.0, x.sum()); assertEquals(0.0, y.sum()); assertEquals(-22.0, z.sum()); }
3. DoubleAdderTest#testReset()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * 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()); }
4. DoubleAdderTest#testAddAndSum()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * 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()); }
5. Serial#testDoubleAdder()
Project: openjdk
File: Serial.java
File: Serial.java
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"); }
6. DoubleAdderTest#testDoubleValue()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * 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()); }
7. DoubleAdderTest#testFloatValue()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * floatValue returns current value. */ public void testFloatValue() { DoubleAdder ai = new DoubleAdder(); assertEquals(0.0f, ai.floatValue()); ai.add(1.0); assertEquals(1.0f, ai.floatValue()); }
8. DoubleAdderTest#testLongValue()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * longValue returns current value. */ public void testLongValue() { DoubleAdder ai = new DoubleAdder(); assertEquals(0, ai.longValue()); ai.add(1.0); assertEquals(1, ai.longValue()); }
9. DoubleAdderTest#testIntValue()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * intValue returns current value. */ public void testIntValue() { DoubleAdder ai = new DoubleAdder(); assertEquals(0, ai.intValue()); ai.add(1.0); assertEquals(1, ai.intValue()); }
10. DoubleAdderTest#testToString()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * 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()); }
11. DoubleAdderTest#testSumThenReset()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * 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()); }
12. BufferGaugeServiceSpeedTests#raw()
Project: spring-boot
File: BufferGaugeServiceSpeedTests.java
File: BufferGaugeServiceSpeedTests.java
@Theory public void raw(String input) throws Exception { iterate("writeRaw"); double rate = number / watch.getLastTaskTimeMillis() * 1000; System.err.println("Rate(" + count + ")=" + rate + ", " + watch); watch.start("readRaw" + count); for (String name : names) { this.gauges.forEach(Pattern.compile(name).asPredicate(), new BiConsumer<String, GaugeBuffer>() { @Override public void accept(String name, GaugeBuffer value) { err.println(name + "=" + value); } }); } final DoubleAdder total = new DoubleAdder(); this.gauges.forEach(Pattern.compile(".*").asPredicate(), new BiConsumer<String, GaugeBuffer>() { @Override public void accept(String name, GaugeBuffer value) { total.add(value.getValue()); } }); watch.stop(); System.err.println("Read(" + count + ")=" + watch.getLastTaskTimeMillis() + "ms"); assertThat(number * threadCount < total.longValue()).isTrue(); }
13. DoubleAdderTest#testConstructor()
Project: openjdk
File: DoubleAdderTest.java
File: DoubleAdderTest.java
/** * default constructed initializes to zero */ public void testConstructor() { DoubleAdder ai = new DoubleAdder(); assertEquals(0.0, ai.sum()); }
14. DoubleAdderDemo#adderTest()
Project: openjdk
File: DoubleAdderDemo.java
File: DoubleAdderDemo.java
static void adderTest(int nthreads, int incs) { System.out.print("DoubleAdder "); Phaser phaser = new Phaser(nthreads + 1); DoubleAdder a = new DoubleAdder(); for (int i = 0; i < nthreads; ++i) pool.execute(new AdderTask(a, phaser, incs)); report(nthreads, incs, timeTasks(phaser), a.sum()); }