Java AtomicLongArray.set方法代码示例

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
@SuppressWarnings("unchecked")
public <T> T deserialze(DefaultJSONParser parser, Type clazz, Object fieldName) {
    if (parser.getLexer().token() == JSONToken.NULL) {
        parser.getLexer().nextToken(JSONToken.COMMA);
        return null;
    }

    JSONArray array = new JSONArray();
    parser.parseArray(array);

    AtomicLongArray atomicArray = new AtomicLongArray(array.size());
    for (int i = 0; i < array.size(); ++i) {
        atomicArray.set(i, array.getLong(i));
    }

    return (T) atomicArray;
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * compareAndSet in one thread enables another waiting for value
 * to succeed
 */
public void testCompareAndSetInMultipleThreads() throws InterruptedException {
    final AtomicLongArray a = new AtomicLongArray(1);
    a.set(0, 1);
    Thread t = new Thread(new CheckedRunnable() {
        public void realRun() {
            while (!a.compareAndSet(0, 2, 3))
                Thread.yield();
        }});

    t.start();
    assertTrue(a.compareAndSet(0, 1, 2));
    t.join(LONG_DELAY_MS);
    assertFalse(t.isAlive());
    assertEquals(3, a.get(0));
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * repeated weakCompareAndSet succeeds in changing value when equal
 * to expected
 */
public void testWeakCompareAndSet() {
    AtomicLongArray aa = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
        aa.set(i, 1);
        do {} while (!aa.weakCompareAndSet(i, 1, 2));
        do {} while (!aa.weakCompareAndSet(i, 2, -4));
        assertEquals(-4, aa.get(i));
        do {} while (!aa.weakCompareAndSet(i, -4, 7));
        assertEquals(7, aa.get(i));
    }
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * a deserialized/reserialized array holds same values in same order
 */
public void testSerialization() throws Exception {
    AtomicLongArray x = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++)
        x.set(i, -i);
    AtomicLongArray y = serialClone(x);
    assertNotSame(x, y);
    assertEquals(x.length(), y.length());
    for (int i = 0; i < SIZE; i++) {
        assertEquals(x.get(i), y.get(i));
    }
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * getAndAdd returns previous value and adds given value
 */
public void testGetAndAdd() {
    AtomicLongArray aa = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
        aa.set(i, 1);
        assertEquals(1, aa.getAndAdd(i, 2));
        assertEquals(3, aa.get(i));
        assertEquals(3, aa.getAndAdd(i, -4));
        assertEquals(-1, aa.get(i));
    }
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * AtomicLongArray getAndUpdate returns previous value and updates
 * result of supplied function
 */
public void testLongArrayGetAndUpdate() {
    AtomicLongArray a = new AtomicLongArray(1);
    a.set(0, 1);
    assertEquals(1L, a.getAndUpdate(0, Atomic8Test::addLong17));
    assertEquals(18L, a.getAndUpdate(0, Atomic8Test::addLong17));
    assertEquals(35L, a.get(0));
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * AtomicLongArray updateAndGet updates with supplied function and
 * returns result.
 */
public void testLongArrayUpdateAndGet() {
    AtomicLongArray a = new AtomicLongArray(1);
    a.set(0, 1);
    assertEquals(18L, a.updateAndGet(0, Atomic8Test::addLong17));
    assertEquals(35L, a.updateAndGet(0, Atomic8Test::addLong17));
    assertEquals(35L, a.get(0));
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * AtomicLongArray getAndAccumulate returns previous value and updates
 * with supplied function.
 */
public void testLongArrayGetAndAccumulate() {
    AtomicLongArray a = new AtomicLongArray(1);
    a.set(0, 1);
    assertEquals(1L, a.getAndAccumulate(0, 2L, Long::sum));
    assertEquals(3L, a.getAndAccumulate(0, 3L, Long::sum));
    assertEquals(6L, a.get(0));
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * AtomicLongArray accumulateAndGet updates with supplied function and
 * returns result.
 */
public void testLongArrayAccumulateAndGet() {
    AtomicLongArray a = new AtomicLongArray(1);
    a.set(0, 1);
    assertEquals(7L, a.accumulateAndGet(0, 6L, Long::sum));
    assertEquals(10L, a.accumulateAndGet(0, 3L, Long::sum));
    assertEquals(10L, a.get(0));
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * getOpaque returns the last value set
 */
public void testGetOpaqueSet() {
    AtomicLongArray aa = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
        aa.set(i, 1);
        assertEquals(1, aa.getOpaque(i));
        aa.set(i, 2);
        assertEquals(2, aa.getOpaque(i));
        aa.set(i, -3);
        assertEquals(-3, aa.getOpaque(i));
    }
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * getAcquire returns the last value set
 */
public void testGetAcquireSet() {
    AtomicLongArray aa = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
        aa.set(i, 1);
        assertEquals(1, aa.getAcquire(i));
        aa.set(i, 2);
        assertEquals(2, aa.getAcquire(i));
        aa.set(i, -3);
        assertEquals(-3, aa.getAcquire(i));
    }
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * getAndIncrement returns previous value and increments
 */
public void testGetAndIncrement() {
    AtomicLongArray aa = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
        aa.set(i, 1);
        assertEquals(1, aa.getAndIncrement(i));
        assertEquals(2, aa.get(i));
        aa.set(i, -2);
        assertEquals(-2, aa.getAndIncrement(i));
        assertEquals(-1, aa.getAndIncrement(i));
        assertEquals(0, aa.getAndIncrement(i));
        assertEquals(1, aa.get(i));
    }
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * compareAndExchangeAcquire succeeds in changing value if equal to
 * expected else fails
 */
public void testCompareAndExchangeAcquire() {
    AtomicLongArray aa = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
        aa.set(i, 1);
        assertEquals(1, aa.compareAndExchangeAcquire(i, 1, 2));
        assertEquals(2, aa.compareAndExchangeAcquire(i, 2, -4));
        assertEquals(-4, aa.get(i));
        assertEquals(-4, aa.compareAndExchangeAcquire(i,-5, 7));
        assertEquals(-4, aa.get(i));
        assertEquals(-4, aa.compareAndExchangeAcquire(i, -4, 7));
        assertEquals(7, aa.get(i));
    }
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * getAndDecrement returns previous value and decrements
 */
public void testGetAndDecrement() {
    AtomicLongArray aa = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
        aa.set(i, 1);
        assertEquals(1, aa.getAndDecrement(i));
        assertEquals(0, aa.getAndDecrement(i));
        assertEquals(-1, aa.getAndDecrement(i));
    }
}
 

import java.util.concurrent.atomic.AtomicLongArray; //导入方法依赖的package包/类
/**
 * repeated weakCompareAndSetPlain succeeds in changing value when equal
 * to expected
 */
public void testWeakCompareAndSetPlain() {
    AtomicLongArray aa = new AtomicLongArray(SIZE);
    for (int i = 0; i < SIZE; i++) {
        aa.set(i, 1);
        do {} while (!aa.weakCompareAndSetPlain(i, 1, 2));
        do {} while (!aa.weakCompareAndSetPlain(i, 2, -4));
        assertEquals(-4, aa.get(i));
        do {} while (!aa.weakCompareAndSetPlain(i, -4, 7));
        assertEquals(7, aa.get(i));
    }
}