Javadeadlock生成需要使用者注意源代码
Java deadlock生成需要我们注意的关键点有很多，其实有不少的问题都能在源代码中寻找到不少的答案。下面我们就看看如何才能更好的做出Java deadlock生成。希望大家有所收获。
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- public class Deadlock extends Object ...{
- private String objID;
- public Deadlock(String id) ...{
- objID = id;
- }
- public synchronized void checkOther(Deadlock other) ...{
- print("entering checkOther()");
- // simulate some lengthy process
- try ...{
- Thread.sleep(2000);
- } catch (InterruptedException x) ...{
- }
- print("in checkOther() - about to " + "invoke 'other.action()'");
- other.action();
- print("leaving checkOther()");
- }
- public synchronized void action() ...{
- print("entering action()");
- // simulate some work here
- try ...{
- Thread.sleep(500);
- } catch (InterruptedException x) ...{
- }
- print("leaving action()");
- }
- public void print(String msg) ...{
- threadPrint("objID=" + objID + " - " + msg);
- }
- public static void threadPrint(String msg) ...{
- String threadName = Thread.currentThread().getName();
- System.out.println(threadName + ": " + msg);
- }
- public static void main(String[] args) ...{
- final Deadlock obj1 = new Deadlock("obj1");
- final Deadlock obj2 = new Deadlock("obj2");
- Runnable runA = new Runnable() ...{
- public void run() ...{
- obj1.checkOther(obj2);
- }
- };
- Thread threadA = new Thread(runA, "threadA");
- threadA.start();
- try ...{
- Thread.sleep(200);
- } catch (InterruptedException x) ...{
- }
- Runnable runB = new Runnable() ...{
- public void run() ...{
- obj2.checkOther(obj1);
- }
- };
- Thread threadB = new Thread(runB, "threadB");
- threadB.start();
- try ...{
- Thread.sleep(5000);
- } catch (InterruptedException x) ...{
- }
- threadPrint("finished sleeping");
- threadPrint("about to interrupt() threadA");
- threadA.interrupt();
- try ...{
- Thread.sleep(1000);
- } catch (InterruptedException x) ...{
- }
- threadPrint("about to interrupt() threadB");
- threadB.interrupt();
- try ...{
- Thread.sleep(1000);
- } catch (InterruptedException x) ...{
- }
- threadPrint("did that break the deadlock?");
- }
- }
以上就是对Java deadlock生成的详细介绍，希望大家能有所领悟。
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