DNS lookup: when the system get scaled to certain level, DNS lookup can be a bottleneck and u may build ur own DNS server. A java Web Crawler 为了移除暂不想关注的点,包括html解析,cookie的使用等等。直接爬一个接口,返回的是json。 多线程: queue使用的是BlockingQueue阻塞队列,offer的时候设置一个...
Moreover, ThreadPoolExecutor manages it's job queue using java.util.concurrent.BlockingQueue which is an interface that requests all implementations are thread-safe. Any java.util.concurrent.* implementation of BlockingQueue can be safely assumed to be thread-safe. Any non-standard implementation ma...
The Java BlockingQueue (producer-consumer pattern) Safe omission of synchronization Synchronization methods in Java The volatile keyword in Java Dangers of the volatile keyword in Java The volatile keyword in Java 5 Typical use of the volatile keyword in Java When to use 'volatile' in Java? Using...
46 How would you code an efficient Circular Buffer in Java or C#? 0 Can we use blockingqueue to implement circular buffer 94 Ring Buffer in Java 0 Thread safe circular buffer? 6 Lock Free Circular Array 0 How to make a circular buffer? 0 Is my circular buffer threadsafe? If not, ...
VM Thread:负责JVM在安全点内的各种操作,这些操作(诸如自动内存管理、取消偏向锁、线程dump、线程挂起等等)在执行过程中需要JVM处于这样一个状态——堆的内容不会被改变,这种状态在JVM里叫做安全点(safe-point)。 Periodic task thread:这个线程负责响应定时触发的事件(例如:中断),用来执行一些定时操作。
import java.util.*; import java.util.concurrent.locks.*; classBQueue<T> { Condition isFullCondition; Condition isEmptyCondition; Locklock; intlimit; intcur = 0; Queue<T> q =newLinkedList<>(); publicBQueue() { this(Integer.MAX_VALUE); ...
import queue q = queue.Queue() for i in range(5): q.put(i) while not q.empty(): print(q.get(), end=' ') print() 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. This example uses a single thread to illustrate that elements are removed from the queue in the same order in ...
Concurrency,Java Threads Definingthread safetyis surprisingly tricky. A quick Google search turns up numerous “definitions” like these: Thread-safe code is code that will work even if many Threads are executing it simultaneously. A piece of code is thread-safe if it only manipulates shared data...
usingSystem;usingSystem.Threading;publicclassExample{publicstaticvoidMain(){// Queue the task.ThreadPool.QueueUserWorkItem(ThreadProc); Console.WriteLine("Main thread does some work, then sleeps."); Thread.Sleep(1000); Console.WriteLine("Main thread exits."); }// This thread procedure performs the...
SafeQueue<MyType> queue;//insert elementsqueue.Produce(std::move(var1)); queue.Produce(std::move(var2)); Non-blocking consumer: SafeQueue<MyEvent> event_queue;//Game loopwhile(!quit) { MyEvent event;while(event_queue.Consume(event)) {//Process the event}UpdateWorld();Render(); } ...