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
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...
super("[CustomThread1] Thread"); } @Override public void run() { String threadName = Thread.currentThread().getName(); System.out.println(threadName + " start."); try { for (int i = 0; i < 5; i++) { System.out.println(threadName + " loop at " + i); Thread.sleep(1000)...
// 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 ...
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...
source:http://www.blogjava.net/jnbzwm/articles/330549.html 一、在研究join的用法之前,先明确两件事情。 1.join方法定义在Thread类中,则调用者必须是一个线程, 例如: Thread t = new CustomThread();//这里一般是自定义的线程类 t.start();//线程起动 ...
例程1 Machine.java package join; public class Machine extends Thread{ public void run(){ for(int a=0;a<50;a++) System.out.println(getName()+":"+a); } public static void main(String args[])throws Exception{ Machine machine=new Machine(); machine.setName("m1"); machine.start(); ...
java.lang.Thread class provides the join() method which allows one thread to wait until another thread completes its execution. If t is a Thread object whose thread is currently executing, then t.join() will make sure that t is terminated before the next instruction is executed by the progr...
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...