三、循环队列 基于数组实现的队列在队首取出是会使得整队移动,而使时间复杂度为O(n) 可以使用循环队,基于队首队尾两个标示来固定队列,从而使得时间复杂度为O(1) 循环队列特点:为空时,队尾标示==队首标示,新加元素时,队尾表识后移, 队列满:(队尾标示+1)%数组长度==队首标示循环队列会使队首前一个位置...
importjava.util.concurrent.LinkedBlockingQueue;publicclassMain{// 创建一个容量为10的LinkedBlockingQueueprivatestaticLinkedBlockingQueue<String>queue=newLinkedBlockingQueue<>(10);} 1. 2. 3. 4. 5. 6. LinkedBlockingQueue<String> queue = new LinkedBlockingQueue<>(10);这行代码创建了一个最大容量为10...
java.util Interface Queue<E> Type Parameters: E- the type of elements held in this collection All Superinterfaces: Collection<E>,Iterable<E> All Known Subinterfaces: BlockingDeque<E>,BlockingQueue<E>,Deque<E>,TransferQueue<E> All Known Implementing Classes: ...
RegisterAttributeJavaTypeParametersAttribute Remarks An unbounded thread-safe Queue queue based on linked nodes. This queue orders elements FIFO (first-in-first-out). The <em>head</em> of the queue is that element that has been on the queue the longest time. The <em>tail</em> of the que...
This class is a member of theJava Collections Framework. Added in 1.5. Java documentation forjava.util.concurrent.LinkedBlockingQueue. Portions of this page are modifications based on work created and shared by theAndroid Open Source Projectand used according to terms described in theCreative Commons...
// This function is NOT ThreadSafe!// 应当在单线程环境中使用该函数// OR should be called in the constructor...template bool LockFreeQueue::Init(void){flags_array_=new(std::nothrow)char[size_];if(flags_array_==NULL)returnfalse;memset(flags_array_,0,size_);ring_array_=reinterpret_cast(...
@Generated(value="com.amazonaws:aws-java-sdk-code-generator") public classQueueextendsObjectimplementsSerializable,Cloneable,StructuredPojo You can use queues to manage the resources that are available to your AWS account for running multiple transcoding jobs at the same time. If you don't specify ...
If a Message Queue client is a J2EE component, JNDI resources are provided by the J2EE container. In such cases, JNDI lookup code may differ from that shown here; see your J2EE provider documentation for details. Example 2–1 Looking Up a Connection Factory ...
Process finished with exit code 0 在Debug模式下单步运行发现 this.head.item = zhazhathis.tail.item =nullException in thread"main"java.lang.NullPointerException at com.zhazha.juc.MyConcurrentLinkedQueue.offer(MyConcurrentLinkedQueue.java:117)
Code README License mq mq是基于 netty 实现的 java mq 框架,类似于 rocket mq。 变更日志 主要用于个人学习,由渐入深,理解 mq 的底层实现原理。 特性 基于netty4 的客户端调用服务端 timeout 超时处理 broker 启动的 check 检测服务可用性 load balance 负载均衡 ...