浅析Java的Thread.join函数 (一)join参数解析 join(): 即join(0),主线程无限等待子进程结束,主线程方可执行。 join(long millis):主线程需等待子进程*毫秒,主线程方可执行。 (二)join源码 join函数用了synchronized关键字,即为同步,线程安全。 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 ...
importjava.util.concurrent.ExecutorService;importjava.util.concurrent.Executors;importjava.util.concurrent.TimeUnit;publicclassJoinExample{publicstaticvoidmain(String[]args)throwsInterruptedException{ExecutorServiceexecutorService=Executors.newFixedThreadPool(2);executorService.execute(newMyRunnable("Thread 1"));execut...
// 位于/hotspot/src/share/vm/runtime/thread.cpp中voidJavaThread::exit(bool destroy_vm,ExitType exit_type){// ...// Notify waiters on thread object. This has to be done after exit() is called// on the thread (if the thread is the last thread in a daemon ThreadGroup the// group ...
public final voidjoin()throws InterruptedException Waits for this thread to die. Throws: InterruptedException - if any thread has interrupted the current thread. Theinterrupted statusof the current thread is cleared when this exception is thrown. 即join() 的作用是:“等待该线程终止”,这里需要理解的...
2. CustomThread1类 3. JoinTestDemo 类,main方法所在的类。 代码一、 class CustomThread1 extends Thread { public CustomThread1() { super("[CustomThread1] Thread"); } @Override public void run() { String threadName = Thread.currentThread().getName(); ...
static void ensure_join(JavaThread* thread) { Handle threadObj(thread, thread->threadObj()); ObjectLocker lock(threadObj, thread); hread->clear_pending_exception(); //这一句中的TERMINATED表示这是线程结束以后运行的 java_lang_Thread::set_thread_status(threadObj(), java_lang_Thread::TERMINATED...
Java线程池(ThreadPoolExecutor、ScheduledThreadPoolExecutor、ForkJoinPool)的核心设计与实现,文章硬核,建议收藏。 我是码哥,《Redis高手心法》畅销书作者。 J.U.C 提供的线程池:ThreadPoolExecutor类,帮助开发人员管理线程并方便地执行并行任务。 了解并合理使用线程池,是一个开发人员必修的基本功。
当前运行的线程可以调用另一个线程的join()方法,当前运行的线程将转到阻塞状态,直至另一个线程运行结束,它才会恢复运行。 饭店服务员等待顾客点餐 本文所说的线程恢复运行,确切的意思是指线程从阻塞状态转到就绪状态,在这个状态就能获得运行机会。关于线程的状态转换,参见:《漫画Java编程》导读之进阶篇-趣味讲解Java线程...
前言:刚刚开始学习多线程的Thread的时候就知道了join这个方法,一直对它只是懵懂的认知。Waits for this thread to die是这个方法的作用。 1. 看一个例子 public class SynchronizedClassClass implements Runnable{ static SynchronizedClassClass synchronizedObjectCodeBlock1 = new SynchronizedClassClass(); static int ...
In this tutorial, we will learnhow to join two Threads and why there is a need to join Threads in java.We will explore in detail theThread.join()API and the different versions of the same along with practical examples. We will also see how we can end up in a deadlock situation while...