The results showed that this optimization model can make full use of the time and space resources in the intersection, increase stretching-segment traffic storage, improve the traffic capacity, effectively mitigate and prevent oversaturated traffic phenomenon caused by traffic queue overflow....
CustomSyncQueue(int count) {if (count <= 0) {throw new IllegalStateException("count must >= 0");}setState(count);}@Overrideprotected int tryAcquireShared(int reduceCount) {for (; ; ) {int current = getState();int newCount = current - reduceCount;if (newCount < 0 || compareAndSet...
private Node enq(final Node node) { // 死循环 for (;;) { Node t = tail; // 如果队列为null,即没有头结点 if (t == null) { // Must initialize // 创建并使用CAS设置头结点 if (compareAndSetHead(new Node())) tail = head; } else { // 队尾添加新结点 node.prev = t; if (c...
1.1 如何解决互斥 将共享变量以及对共享变量的操作 统一封装起来,如下图,多个线程想要访问共享变量queue,只能通过管程提供的enq()和deq()方法实现,这两个方法保持互斥性,且只允许一个线程进入管程。管程的模型和面向对象模型的契合度很高,这也可功能是Java一开始选择管程的原因(JDK5增加了信号量),互斥锁背后的模型其...
上面是官方文档的一个例子,实现了一个简单的 BlockingQueue ,看懂这里,会发现在同步队列中很多地方都是用的这个逻辑。 实现原理 在Object 的监视器模型上,一个对象拥有一个同步队列和等待队列,而并发包中的 Lock(更确切地说是同步器)拥有一个同步队列和多个 Condition 等待队列。 Condition 条件队列是单链,它没有...
Bug Check 0xF9: DRIVER_RETURNED_STATUS_REPARSE_FOR_VOLUME_OPEN Bug Check 0xFA: HTTP_DRIVER_CORRUPTED Bug Check 0xFC: ATTEMPTED_EXECUTE_OF_NOEXECUTE_MEMORY Bug Check 0xFD: DIRTY_NOWRITE_PAGES_CONGESTION Bug Check 0xFE: BUGCODE_USB_DRIVER Bug Check 0xFF: RESERVE_QUEUE_OVERFLOW Bug Check...
std::condition_variable调用后由于参数无效导致应用程序崩溃大家好，在这里分享一下flash里边处理redirect的方法。 一般而言，大家不会遇到这个问题，毕竟图片地址一般杠杠的，不会redirect。但昨天在拉取空间的照片就会出现redirect。神啊！！！ 而且这个不是必现的，空间某些照片会突然redirect，例如从aXX.photo.qq.com...
Queue overflow drops: Specifies the number of requests that were initially accepted into the queue at some time and then, at some time during the reported interval, were ejected from the queue.These metrics can be used on servers that are running WebSphere Application Server or that are running...
问mutex和condition_variable无法访问类中的私有成员EN类是对于某一类对象的一个统称，类是对象的抽象化,...
Org level settings for Sales Copilot apps Organization Originating Queue Mapping Overflow Action Config Owner Pane tab configuration Pane tool configuration Parameter definition Persona Security Role Mapping Personal quick reply Personal sound setting Phone Call Phone To Case Process Plug-in Type Poll Place...