多线程 – 在Intellij Idea中切换线程

如何在暂停程序的线程之间切换？

或任何有关使用Intellij Idea进行多线程调试的教程,描述基本功能 – 暂停,恢复,在线程之间切换.

Netbeans提供的非常好的教程/分步指南：
例如https://netbeans.org/kb/docs/java/debug-multithreaded.html

解决方法

Trick是将断点暂停策略设置为 – Thread.

一旦完成线程将命中断点并阻塞,现在可以切换活动线程以检查竞争条件/死锁.

以下代码片段用于创建死锁：

public static void main(String args[]) {
    Thread thread1 = new Thread(null,new MyThread(obj1,obj2),"Thread-1");
    Thread thread2 = new Thread(null,new MyThread(obj2,obj1),"Thread-2");
    thread1.start();
    thread2.start();
}
class MyThread implements Runnable {
    private Object obj1;
    private Object obj2;

    MyThread(Object obj1,Object obj2) {
        this.obj1 = obj1;
        this.obj2 = obj2;
    }

    @Override
    public void run() {
        System.out.println("Acquiring locks");
        synchronized (obj1){
            System.out.println("Acquired 1st lock");
            synchronized (obj2){
                System.out.println("Acquired 2nd lock");
            }
            System.out.println("Released 2nd lock");
        }
        System.out.println("Released 1st lock");
    }
}