标签：ble image width 总结 new t 释放 dump 命令 cep
public class DeadLockDemo {
public static void main(String[] args) {
final Object o1 = new Object();
final Object o2 = new Object();
Thread t1 = new Thread(new Runnable() {
@Override
public void run() {
synchronized (o1){
//获取o1的锁
try{
Thread.sleep(1000);
}catch (InterruptedException e){
e.printStackTrace();
}
synchronized (o2){
//尝试获取02的锁
}
}
}
});
Thread t2 = new Thread(new Runnable() {
@Override
public void run() {
synchronized (o2){
//获取o2的锁
try{
Thread.sleep(1000);
}catch (InterruptedException e){
e.printStackTrace();
}
synchronized (o1){
//尝试获取01的锁
}
}
}
});
//启动两个线程
t1.start();
t2.start();
}
}
4、死锁分析：
Linux用jps命令找出运行的进程pid：（例子运行的程序名称为DeadLockDemo,即pid 为9345）
然后采用jstack （jstack pid）命令显示当前jvm的dump信息：
信息最后我们可以清晰看到（发生了死锁，和对象地址）：
Found one Java-level deadlock:
=============================
"Thread-1":
waiting to lock monitor 0x00007f6f50004e28 (object 0x000000058015fa18, a java.lang.Object),
which is held by "Thread-0"
"Thread-0":
waiting to lock monitor 0x00007f6f500062c8 (object 0x000000058015fa28, a java.lang.Object),
which is held by "Thread-1"
Java stack information for the threads listed above:
===================================================
"Thread-1":
at DeadLockDemo$2.run(DeadLockDemo.java:35)
- waiting to lock <0x000000058015fa18> (a java.lang.Object)
- locked <0x000000058015fa28> (a java.lang.Object)
at java.lang.Thread.run(Thread.java:745)
"Thread-0":
at DeadLockDemo$1.run(DeadLockDemo.java:18)
- waiting to lock <0x000000058015fa28> (a java.lang.Object)
- locked <0x000000058015fa18> (a java.lang.Object)
at java.lang.Thread.run(Thread.java:745)
Found 1 deadlock.
标签：ble image width 总结 new t 释放 dump 命令 cep
原文地址：https://www.cnblogs.com/lihao7/p/10268070.html
