newpqueue.emplace("is a"); newpqueue.emplace("Javatpoint");cout<<"newpqueue = ";while(!newpqueue.empty( ) ) {cout<< newpqueue.front() <<" "; newpqueue.pop(); }return0; } 输出: Javatpoint is a computer science portal 复杂度 对emplace_back 进行一次调用。 数据竞争 队列中存在的...
t : q; } } 代码语言:java AI代码解释 boolean casNext(Node<E> cmp, Node<E> val) { return UNSAFE.compareAndSwapObject(this, nextOffset, cmp, val); } 运用了 UNSAFE.compareAndSwapObject 方法来完成 CAS 操作,而 compareAndSwapObject 是一个 native 方法,最终会利用 CPU 的 CAS 指令保证其不可...
import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.util.*; class MyMouseListener extends MouseAdapter implements ActionListener { //记录当前所选颜色 默认为蓝色 public Color color = Color.BLACK; //Point1 Point2 public int x1=0,y1=0,x2=0,y2=0; //ployX,pl...
<T> T[]toArray(T[] a) Returns an array containing all of the elements in this queue, in proper sequence; the runtime type of the returned array is that of the specified array. Methods inherited from class java.util.AbstractQueue
Point3DCollection.System.Collections.Generic.IEnumerable<System.Windows.Media.Media3D.Point3D>.GetEnumerator Method (System.Windows.Media.Media3D) Publishing Wizards Color Palette Functions Progress Bar Properties Properties Properties MSMQ Glossary: T Arbitrary File Types MSMQApplication.IsConnected Writing a ...
for(Node<E> t = tail, p = t;;) { Node<E> q = p.next; if(q ==null) { // p is last node if(p.casNext(null, newNode)) { // Successful CAS is the linearization point // for e to become an element of this queue, ...
publicbooleanoffer(E e){//e为null则抛出空指针异常1checkNotNull(e);//构造Node节点构造函数内部调用unsafe.putObject,后面统一讲2finalNode<E> newNode =newNode<E>(e);//从尾节点插入3for(Node<E> t = tail, p = t;;) {4Node<E> q = p.next;//如果q=null说明p是尾节点则插入5if(q ==...
publicbooleanoffer(Ee){checkNotNull(e);finalNode<E>newNode=newNode<E>(e);for(Node<E>t=tail,p=t;;){Node<E>q=p.next;if(q==null){// p is last node// 找到了最后一个节点,通过 CAS 将其 next 指向新节点if(p.casNext(null,newNode)){// Successful CAS is the linearization point/...
另外,队列中还提供了比较重要的队列读取消息操作相关的枚举和宏。枚举QueueReadWrite区分队列的读和写,枚举QueueHeadTail区分队列的首和尾,枚举QueuePointOrNot区分读写消息时是使用值还是指针。 队列的操作类型使用3比特位的数字来表示,见宏OS_QUEUE_OPERATE_TYPE的定义,其中高1位表示读写数值还是读写指针地址,中1位...
When you interact with queue using this Java client library, errors returned by the service correspond to the same HTTP status codes returned for REST API requests. For example, if you try to retrieve a queue that doesn't exist in your Storage Account, a 404 error is returned, indicating ...