publicclassAtomicIntegerextendsNumberimplementsjava.io.Serializable {privatestaticfinallongserialVersionUID=6214790243416807050L;// 获取指针类Unsafe类实例privatestaticfinalUnsafeunsafe=Unsafe.getUnsafe();//变量value在AtomicInteger实例对象内的内存偏移量privatestaticfinallongvalueOffset;static{try{//通过unsafe类的object...
Spacco, "Atomic instructions in java," in Proceedings of the European Conference on Object-Oriented Programming, ser. ECOOP '02. Springer, 2002, pp. 133-154.David Hovemeyer, William Pugh, and Jaime Spacco. Atomic Instructions in Java. In Proceedings of the 16th European Conference on Object-...
private static final AtomicInteger i = new AtomicInteger(1); javaintegeratomic 20th Jun 2018, 10:49 AM Star Lord 1 Answer Answer + 1 It allows you to use Atomic operations. If you have multi threading application than simple increment like i++ may end with wrong result. That's why it'...
getName()+"\t"+"result: "+myNumber.atomicInteger.get()); } } 2. 数组类型原子类 AtomicIntegerArray AtomicLongArray AtomicReferenceArray 代码语言:javascript 代码运行次数:0 运行 AI代码解释 public class AtomicIntegerArrayDemo { public static void main(String[] args) { AtomicIntegerArray atomicInteger...
class MyNumber{AtomicInteger atomicInteger = new AtomicInteger();public void addPlusPlus(){atomicInteger.getAndIncrement();}}public class AtomicIntegerDemo{public static final int SIZE = 50;public static void main(String[] args) throws InterruptedException{MyNumber myNumber = new MyNumber();CountDown...
public classAtomicIntegerextendsNumberimplementsjava.io.Serializable{ private static final long serialVersionUID = 6214790243416807050L; // 获取指针类Unsafe private static final Unsafe unsafe = Unsafe.getUnsafe(); //下述变量value在AtomicInteger实例对象内的内存偏移量 private static final long valueOffset; ...
shift= 31 -Integer.numberOfLeadingZeros(scale); }//.../*** Sets the element at position {@codei} to the given value. * *@parami the index *@paramnewValue the new value*/publicfinalvoidset(inti,intnewValue) { unsafe.putIntVolatile(array, checkedByteOffset(i), newValue); ...
* for longs. Called only once and cached in VM_SUPPORTS_LONG_CAS.*/privatestaticnativebooleanVMSupportsCS8(); 延伸知识点 publicclassAtomicIntegerextendsNumberimplementsjava.io.Serializable {privatestaticfinallongserialVersionUID = 6214790243416807050L;//setup to use Unsafe.compareAndSwapInt for updatespri...
class Sequencer { private final AtomicLong sequenceNumber = new AtomicLong(0); public long next() { return sequenceNumber.getAndIncrement(); } } It is straightforward to define new utility functions that, likegetAndIncrement, apply a function to a value atomically. For example, given some trans...
Whether the extra effort is worthwhile depends on the size and complexity of the application. Some of the classes in the java.util.concurrent package provide atomic methods that do not rely on synchronization. We'll discuss them in the section on High Level Concurrency Objects....