线程死锁DEMO

谁践踏了优雅 2022-08-26 05:57 173阅读 0赞

先来看下以下代码：

public static void main(String[] args) throws IOException, InterruptedException {
    	for (int i = 0; i < 100; i++) {
    		new Thread(new SyncLockRunnable(1, 2)).start();
    		new Thread(new SyncLockRunnable(2, 1)).start();
    	}
    }
    
    static class SyncLockRunnable implements Runnable {
    		int a, b;
    
    		public SyncLockRunnable(int a, int b) {
    			this.a = a;
    			this.b = b;
    		}
    
    		@Override
    		public void run() {
    			synchronized (Integer.valueOf(a)) {
    				synchronized (Integer.valueOf(b)) {
    					System.out.println(a + b);
    				}
    		}
    	}
    }

这段代码开了200个线程分别去计算1+2及2+1的值，其实FOR循环是可以省略的，两个线程也可能会导致死循环，不过那样概率太小，

需要尝试运行很多次才能看到效果。如果运气不是特别差得话，待FOR循环最多运行2~3次就会遇到线程死锁，程序无法结束。造成死锁的原因是Integer.valueOf()方法基于减少对象创建次数和节省内存的考虑，【-128，127】之间的数值会被缓存，当valueOf()方法在这个范围之内传入参数，将直接返回缓存中得对象。也就是说代码中带哦用了200次Integer.valueOf()方法一共就返回了两个不同的对象。假如在某个线程的两个**synchronized块之间发生了一次线程切换，就会出现线程A等待线程B持有的Integer.valueOf()，线程B又等着线程A持由的对象锁，结果大家都跑不下去了。出现线程死锁之后，使用jconsole线程面板的“检测到死锁”的按钮，将会出现一个新的“死锁”页签。**

![Center][]

也可以同时JDK自带dump线程工具查看如下：

jstack 9856

2014-03-29 11:35:32

Full thread dump Java HotSpot(TM) 64-Bit Server VM (20.65-b04-462 mixed mode):

"RMI TCP Connection(7)-127.0.0.1" daemon prio=9 tid=7fa81f97f000 nid=0x114d26000 runnable \[114d25000\]

java.lang.Thread.State: RUNNABLE

at java.net.SocketInputStream.socketRead0(Native Method)

at java.net.SocketInputStream.read(SocketInputStream.java:129)

at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)

at java.io.BufferedInputStream.read(BufferedInputStream.java:237)

\- locked <7f33ca770> (a java.io.BufferedInputStream)

at java.io.FilterInputStream.read(FilterInputStream.java:66)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:517)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)

at java.lang.Thread.run(Thread.java:695)

"RMI TCP Connection(5)-127.0.0.1" daemon prio=9 tid=7fa81f049000 nid=0x114c23000 runnable \[114c22000\]

java.lang.Thread.State: RUNNABLE

at java.net.SocketInputStream.socketRead0(Native Method)

at java.net.SocketInputStream.read(SocketInputStream.java:129)

at java.io.BufferedInputStream.fill(BufferedInputStream.java:218)

at java.io.BufferedInputStream.read(BufferedInputStream.java:237)

\- locked <7f44ffbd8> (a java.io.BufferedInputStream)

at java.io.FilterInputStream.read(FilterInputStream.java:66)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:517)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)

at java.lang.Thread.run(Thread.java:695)

"RMI TCP Connection(4)-127.0.0.1" daemon prio=9 tid=7fa81f042000 nid=0x114b20000 in Object.wait() \[114b1e000\]

java.lang.Thread.State: TIMED\_WAITING (on object monitor)

at java.lang.Object.wait(Native Method)

\- waiting on <7f44e7910> (a com.sun.jmx.remote.internal.ArrayNotificationBuffer)

at com.sun.jmx.remote.internal.ArrayNotificationBuffer.fetchNotifications(ArrayNotificationBuffer.java:437)

\- locked <7f44e7910> (a com.sun.jmx.remote.internal.ArrayNotificationBuffer)

at com.sun.jmx.remote.internal.ArrayNotificationBuffer$ShareBuffer.fetchNotifications(ArrayNotificationBuffer.java:209)

at com.sun.jmx.remote.internal.ServerNotifForwarder.fetchNotifs(ServerNotifForwarder.java:259)

at javax.management.remote.rmi.RMIConnectionImpl$3.run(RMIConnectionImpl.java:1258)

at javax.management.remote.rmi.RMIConnectionImpl$3.run(RMIConnectionImpl.java:1256)

at javax.management.remote.rmi.RMIConnectionImpl.fetchNotifications(RMIConnectionImpl.java:1262)

at sun.reflect.GeneratedMethodAccessor86.invoke(Unknown Source)

at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)

at java.lang.reflect.Method.invoke(Method.java:597)

at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:303)

at sun.rmi.transport.Transport$1.run(Transport.java:159)

at java.security.AccessController.doPrivileged(Native Method)

at sun.rmi.transport.Transport.serviceCall(Transport.java:155)

at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:535)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:790)

at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:649)

at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)

at java.lang.Thread.run(Thread.java:695)

"JMX server connection timeout 222" daemon prio=9 tid=7fa81d91e800 nid=0x114a1d000 in Object.wait() \[114a1c000\]

java.lang.Thread.State: TIMED\_WAITING (on object monitor)

at java.lang.Object.wait(Native Method)

\- waiting on <7f44e1fa8> (a \[I)

at com.sun.jmx.remote.internal.ServerCommunicatorAdmin$Timeout.run(ServerCommunicatorAdmin.java:150)

\- locked <7f44e1fa8> (a \[I)

at java.lang.Thread.run(Thread.java:695)

"RMI Scheduler(0)" daemon prio=9 tid=7fa81d91e000 nid=0x1147a8000 waiting on condition \[1147a7000\]

java.lang.Thread.State: TIMED\_WAITING (parking)

at sun.misc.Unsafe.park(Native Method)

\- parking to wait for  <7f44e3088> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)

at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:196)

at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2025)

at java.util.concurrent.DelayQueue.take(DelayQueue.java:164)

at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:609)

at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:602)

at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:957)

at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:917)

at java.lang.Thread.run(Thread.java:695)

"RMI TCP Accept-0" daemon prio=9 tid=7fa81e041000 nid=0x11459e000 runnable \[11459d000\]

java.lang.Thread.State: RUNNABLE

at java.net.PlainSocketImpl.socketAccept(Native Method)

at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:439)

\- locked <7f44e94d0> (a java.net.SocksSocketImpl)

at java.net.ServerSocket.implAccept(ServerSocket.java:468)

at java.net.ServerSocket.accept(ServerSocket.java:436)

at sun.management.jmxremote.LocalRMIServerSocketFactory$1.accept(LocalRMIServerSocketFactory.java:34)

at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.executeAcceptLoop(TCPTransport.java:369)

at sun.rmi.transport.tcp.TCPTransport$AcceptLoop.run(TCPTransport.java:341)

at java.lang.Thread.run(Thread.java:695)

"AWT-AppKit" daemon prio=5 tid=7fa81f932800 nid=0x7fff78c79310 runnable \[00000000\]

java.lang.Thread.State: RUNNABLE

"Attach Listener" daemon prio=9 tid=7fa81f000000 nid=0x10880c000 waiting on condition \[00000000\]

java.lang.Thread.State: RUNNABLE

"DestroyJavaVM" prio=5 tid=7fa81f927800 nid=0x100e11000 waiting on condition \[00000000\]

java.lang.Thread.State: RUNNABLE

"Thread-200" prio=5 tid=7fa81d94d800 nid=0x10fa36000 waiting for monitor entry \[10fa35000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-199" prio=5 tid=7fa81e138800 nid=0x10f933000 waiting for monitor entry \[10f932000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-198" prio=5 tid=7fa81e138000 nid=0x10f830000 waiting for monitor entry \[10f82f000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-197" prio=5 tid=7fa81e137000 nid=0x10f72d000 waiting for monitor entry \[10f72c000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-196" prio=5 tid=7fa81e136800 nid=0x10f62a000 waiting for monitor entry \[10f629000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-195" prio=5 tid=7fa81e135800 nid=0x10f527000 waiting for monitor entry \[10f526000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-194" prio=5 tid=7fa81e135000 nid=0x10f424000 waiting for monitor entry \[10f423000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-193" prio=5 tid=7fa81f927000 nid=0x10f321000 waiting for monitor entry \[10f320000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-192" prio=5 tid=7fa81f1af800 nid=0x10f21e000 waiting for monitor entry \[10f21d000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-191" prio=5 tid=7fa81f926000 nid=0x10f11b000 waiting for monitor entry \[10f11a000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-190" prio=5 tid=7fa81d94c800 nid=0x10f018000 waiting for monitor entry \[10f017000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-189" prio=5 tid=7fa81d94c000 nid=0x10ef15000 waiting for monitor entry \[10ef14000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-188" prio=5 tid=7fa81f1af000 nid=0x10ee12000 waiting for monitor entry \[10ee11000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-187" prio=5 tid=7fa81f925800 nid=0x10ed0f000 waiting for monitor entry \[10ed0e000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-186" prio=5 tid=7fa81f924800 nid=0x10ec0c000 waiting for monitor entry \[10ec0b000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-185" prio=5 tid=7fa81f924000 nid=0x10eb09000 waiting for monitor entry \[10eb08000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-184" prio=5 tid=7fa81f923000 nid=0x10ea06000 waiting for monitor entry \[10ea05000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-183" prio=5 tid=7fa81f922800 nid=0x10e903000 waiting for monitor entry \[10e902000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-182" prio=5 tid=7fa81f1ae000 nid=0x10e800000 waiting for monitor entry \[10e7ff000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-181" prio=5 tid=7fa81f921800 nid=0x10e6fd000 waiting for monitor entry \[10e6fc000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-180" prio=5 tid=7fa81f921000 nid=0x10e5fa000 waiting for monitor entry \[10e5f9000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-179" prio=5 tid=7fa81f920000 nid=0x10e4f7000 waiting for monitor entry \[10e4f6000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-178" prio=5 tid=7fa81f91f800 nid=0x10e3f4000 waiting for monitor entry \[10e3f3000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-177" prio=5 tid=7fa81f91e800 nid=0x10e2f1000 waiting for monitor entry \[10e2f0000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-176" prio=5 tid=7fa81f91e000 nid=0x10e1ee000 waiting for monitor entry \[10e1ed000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-175" prio=5 tid=7fa81f91d000 nid=0x10e0eb000 waiting for monitor entry \[10e0ea000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-174" prio=5 tid=7fa81f91c800 nid=0x10dfe8000 waiting for monitor entry \[10dfe7000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-173" prio=5 tid=7fa81f91b800 nid=0x10dee5000 waiting for monitor entry \[10dee4000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-172" prio=5 tid=7fa81f91b000 nid=0x10dde2000 waiting for monitor entry \[10dde1000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-171" prio=5 tid=7fa81f1ad800 nid=0x10dcdf000 waiting for monitor entry \[10dcde000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-170" prio=5 tid=7fa81f91a000 nid=0x10dbdc000 waiting for monitor entry \[10dbdb000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-169" prio=5 tid=7fa81f919800 nid=0x10dad9000 waiting for monitor entry \[10dad8000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-168" prio=5 tid=7fa81f918800 nid=0x10d9d6000 waiting for monitor entry \[10d9d5000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-167" prio=5 tid=7fa81f1ac800 nid=0x10d8d3000 waiting for monitor entry \[10d8d2000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-166" prio=5 tid=7fa81e134000 nid=0x10d7d0000 waiting for monitor entry \[10d7cf000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-165" prio=5 tid=7fa81f918000 nid=0x10d6cd000 waiting for monitor entry \[10d6cc000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-164" prio=5 tid=7fa81f917000 nid=0x10d5ca000 waiting for monitor entry \[10d5c9000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-163" prio=5 tid=7fa81d94b000 nid=0x10d4c7000 waiting for monitor entry \[10d4c6000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-162" prio=5 tid=7fa81f916800 nid=0x10d3c4000 waiting for monitor entry \[10d3c3000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-161" prio=5 tid=7fa81d94a800 nid=0x10d2c1000 waiting for monitor entry \[10d2c0000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-160" prio=5 tid=7fa81f1ac000 nid=0x10d1be000 waiting for monitor entry \[10d1bd000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-159" prio=5 tid=7fa81f915800 nid=0x10d0bb000 waiting for monitor entry \[10d0ba000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-158" prio=5 tid=7fa81f93a000 nid=0x10cfb8000 waiting for monitor entry \[10cfb7000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-157" prio=5 tid=7fa81d8bf800 nid=0x10ceb5000 waiting for monitor entry \[10ceb4000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-156" prio=5 tid=7fa81f939000 nid=0x10cdb2000 waiting for monitor entry \[10cdb1000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-155" prio=5 tid=7fa81f938800 nid=0x10ccaf000 waiting for monitor entry \[10ccae000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-154" prio=5 tid=7fa81f937800 nid=0x10cbac000 waiting for monitor entry \[10cbab000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-153" prio=5 tid=7fa81f937000 nid=0x10caa9000 waiting for monitor entry \[10caa8000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-152" prio=5 tid=7fa81f936000 nid=0x10c9a6000 waiting for monitor entry \[10c9a5000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-151" prio=5 tid=7fa81e133800 nid=0x10c8a3000 waiting for monitor entry \[10c8a2000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-150" prio=5 tid=7fa81e152000 nid=0x10c7a0000 waiting for monitor entry \[10c79f000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-149" prio=5 tid=7fa81e151800 nid=0x10c69d000 waiting for monitor entry \[10c69c000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-148" prio=5 tid=7fa81e150800 nid=0x10c59a000 waiting for monitor entry \[10c599000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-147" prio=5 tid=7fa81e150000 nid=0x10c497000 waiting for monitor entry \[10c496000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-146" prio=5 tid=7fa81e14f000 nid=0x10c394000 waiting for monitor entry \[10c393000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-145" prio=5 tid=7fa81e14e800 nid=0x10c291000 waiting for monitor entry \[10c290000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-144" prio=5 tid=7fa81e14d800 nid=0x10c18e000 waiting for monitor entry \[10c18d000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-143" prio=5 tid=7fa81e14d000 nid=0x10c08b000 waiting for monitor entry \[10c08a000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-142" prio=5 tid=7fa81e14c000 nid=0x10bf88000 waiting for monitor entry \[10bf87000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-141" prio=5 tid=7fa81e14b800 nid=0x10be85000 waiting for monitor entry \[10be84000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-140" prio=5 tid=7fa81e046000 nid=0x10bd82000 waiting for monitor entry \[10bd81000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-139" prio=5 tid=7fa81e045800 nid=0x10bc7f000 waiting for monitor entry \[10bc7e000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-138" prio=5 tid=7fa81f1ab000 nid=0x10bb7c000 waiting for monitor entry \[10bb7b000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-137" prio=5 tid=7fa81f935800 nid=0x10ba79000 waiting for monitor entry \[10ba78000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-136" prio=5 tid=7fa81e043000 nid=0x10b976000 waiting for monitor entry \[10b975000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-135" prio=5 tid=7fa81e042000 nid=0x10b873000 waiting for monitor entry \[10b872000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-134" prio=5 tid=7fa81f934800 nid=0x10b770000 waiting for monitor entry \[10b76f000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-133" prio=5 tid=7fa81f934000 nid=0x10b66d000 waiting for monitor entry \[10b66c000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-132" prio=5 tid=7fa81d949800 nid=0x10b56a000 waiting for monitor entry \[10b569000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-131" prio=5 tid=7fa81f933000 nid=0x10b467000 waiting for monitor entry \[10b466000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-130" prio=5 tid=7fa81f90c000 nid=0x10b364000 waiting for monitor entry \[10b363000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-129" prio=5 tid=7fa81f90b800 nid=0x10b261000 waiting for monitor entry \[10b260000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-128" prio=5 tid=7fa81f90a800 nid=0x10b15e000 waiting for monitor entry \[10b15d000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-127" prio=5 tid=7fa81f90a000 nid=0x10b05b000 waiting for monitor entry \[10b05a000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-126" prio=5 tid=7fa81f909000 nid=0x10af58000 waiting for monitor entry \[10af57000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-125" prio=5 tid=7fa81f908800 nid=0x10ae55000 waiting for monitor entry \[10ae54000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-124" prio=5 tid=7fa81f907800 nid=0x10ad52000 waiting for monitor entry \[10ad51000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-123" prio=5 tid=7fa81f907000 nid=0x10ac4f000 waiting for monitor entry \[10ac4e000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-122" prio=5 tid=7fa81f906000 nid=0x10ab4c000 waiting for monitor entry \[10ab4b000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-121" prio=5 tid=7fa81f905800 nid=0x10aa49000 waiting for monitor entry \[10aa48000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-120" prio=5 tid=7fa81f052800 nid=0x10a946000 waiting for monitor entry \[10a945000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-119" prio=5 tid=7fa81f94a000 nid=0x10a843000 waiting for monitor entry \[10a842000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-118" prio=5 tid=7fa81f052000 nid=0x10a740000 waiting for monitor entry \[10a73f000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-117" prio=5 tid=7fa81f051000 nid=0x10a63d000 waiting for monitor entry \[10a63c000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-116" prio=5 tid=7fa81f949000 nid=0x10a53a000 waiting for monitor entry \[10a539000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-115" prio=5 tid=7fa81f948800 nid=0x10a437000 waiting for monitor entry \[10a436000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-114" prio=5 tid=7fa81f947800 nid=0x10a334000 waiting for monitor entry \[10a333000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-113" prio=5 tid=7fa81f947000 nid=0x10a231000 waiting for monitor entry \[10a230000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-112" prio=5 tid=7fa81f946000 nid=0x10a12e000 waiting for monitor entry \[10a12d000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-111" prio=5 tid=7fa81f945800 nid=0x10a02b000 waiting for monitor entry \[10a02a000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-110" prio=5 tid=7fa81f944800 nid=0x109f28000 waiting for monitor entry \[109f27000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-109" prio=5 tid=7fa81f050800 nid=0x109e25000 waiting for monitor entry \[109e24000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-108" prio=5 tid=7fa81f959800 nid=0x109d22000 waiting for monitor entry \[109d21000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-107" prio=5 tid=7fa81f959000 nid=0x109c1f000 waiting for monitor entry \[109c1e000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-106" prio=5 tid=7fa81f958000 nid=0x109813000 waiting for monitor entry \[109812000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-105" prio=5 tid=7fa81f957800 nid=0x109710000 waiting for monitor entry \[10970f000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-104" prio=5 tid=7fa81f953800 nid=0x10960d000 waiting for monitor entry \[10960c000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-103" prio=5 tid=7fa81f955000 nid=0x10950a000 waiting for monitor entry \[109509000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-102" prio=5 tid=7fa81f04f800 nid=0x109407000 waiting for monitor entry \[109406000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-101" prio=5 tid=7fa81f954000 nid=0x109304000 waiting for monitor entry \[109303000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-100" prio=5 tid=7fa81f16a000 nid=0x109201000 waiting for monitor entry \[109200000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-99" prio=5 tid=7fa81f0f7000 nid=0x1090fe000 waiting for monitor entry \[1090fd000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-98" prio=5 tid=7fa81f944000 nid=0x109b1c000 waiting for monitor entry \[109b1b000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-97" prio=5 tid=7fa81f943000 nid=0x109a19000 waiting for monitor entry \[109a18000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:63)

\- waiting to lock <7f44e2020> (a java.lang.Integer)

\- locked <7f44e2050> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Thread-96" prio=5 tid=7fa81f95a800 nid=0x109916000 waiting for monitor entry \[109915000\]

java.lang.Thread.State: BLOCKED (on object monitor)

at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:63)

\- waiting to lock <7f44e2050> (a java.lang.Integer)

\- locked <7f44e2020> (a java.lang.Integer)

at java.lang.Thread.run(Thread.java:695)

"Low Memory Detector" daemon prio=5 tid=7fa81d823800 nid=0x108d1e000 runnable \[00000000\]

java.lang.Thread.State: RUNNABLE

"C2 CompilerThread1" daemon prio=9 tid=7fa81f885000 nid=0x108c1b000 waiting on condition \[00000000\]

java.lang.Thread.State: RUNNABLE

"C2 CompilerThread0" daemon prio=9 tid=7fa81d823000 nid=0x108b18000 waiting on condition \[00000000\]

java.lang.Thread.State: RUNNABLE

"Signal Dispatcher" daemon prio=9 tid=7fa81d822000 nid=0x108a15000 runnable \[00000000\]

java.lang.Thread.State: RUNNABLE

"Surrogate Locker Thread (Concurrent GC)" daemon prio=5 tid=7fa81d821800 nid=0x108912000 waiting on condition \[00000000\]

java.lang.Thread.State: RUNNABLE

"Finalizer" daemon prio=8 tid=7fa81f883000 nid=0x108709000 in Object.wait() \[108708000\]

java.lang.Thread.State: WAITING (on object monitor)

at java.lang.Object.wait(Native Method)

\- waiting on <7f44f3ba0> (a java.lang.ref.ReferenceQueue$Lock)

at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:118)

\- locked <7f44f3ba0> (a java.lang.ref.ReferenceQueue$Lock)

at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:134)

at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:171)

"Reference Handler" daemon prio=10 tid=7fa81d812800 nid=0x108606000 in Object.wait() \[108605000\]

java.lang.Thread.State: WAITING (on object monitor)

at java.lang.Object.wait(Native Method)

\- waiting on <7f44e68d0> (a java.lang.ref.Reference$Lock)

at java.lang.Object.wait(Object.java:485)

at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:116)

\- locked <7f44e68d0> (a java.lang.ref.Reference$Lock)

"VM Thread" prio=9 tid=7fa81f039800 nid=0x108503000 runnable

"Gang worker\#0 (Parallel GC Threads)" prio=9 tid=7fa81f800800 nid=0x1049c2000 runnable

"Gang worker\#1 (Parallel GC Threads)" prio=9 tid=7fa81f001800 nid=0x104ac5000 runnable

"Gang worker\#2 (Parallel GC Threads)" prio=9 tid=7fa81f004800 nid=0x104bc8000 runnable

"Gang worker\#3 (Parallel GC Threads)" prio=9 tid=7fa81f801000 nid=0x104ccb000 runnable

"Concurrent Mark-Sweep GC Thread" prio=9 tid=7fa81f86f800 nid=0x108184000 runnable

"VM Periodic Task Thread" prio=10 tid=7fa81f04b000 nid=0x108e21000 waiting on condition

"Exception Catcher Thread" prio=10 tid=7fa81f001000 nid=0x100fcd000 runnable

JNI global references: 1096

**Found one Java-level deadlock:**

**=============================**

**"Thread-200":**

**  waiting to lock monitor 7fa81b81bf60 (object 7f44e2020, a java.lang.Integer),**

**  which is held by "Thread-96"**

**"Thread-96":**

**  waiting to lock monitor 7fa81b82d108 (object 7f44e2050, a java.lang.Integer),**

**  which is held by "Thread-97"**

**"Thread-97":**

**  waiting to lock monitor 7fa81b81bf60 (object 7f44e2020, a java.lang.Integer),**

**  which is held by "Thread-96"**

**Java stack information for the threads listed above:**

**===================================================**

**"Thread-200":**

**at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:62)**

**- waiting to lock <7f44e2020> (a java.lang.Integer)**

**at java.lang.Thread.run(Thread.java:695)**

**"Thread-96":**

**at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:63)**

**- waiting to lock <7f44e2050> (a java.lang.Integer)**

**- locked <7f44e2020> (a java.lang.Integer)**

**at java.lang.Thread.run(Thread.java:695)**

**"Thread-97":**

**at com.lss.test.ThreadLock$SyncLockRunnable.run(ThreadLock.java:63)**

**- waiting to lock <7f44e2020> (a java.lang.Integer)**

**- locked <7f44e2050> (a java.lang.Integer)**

**at java.lang.Thread.run(Thread.java:695)**

Found 1 deadlock.

本案例是我在阅读：深入理解Java虚拟机.JVM高级特性和最佳实践 auth：周志明

非常不错的一本关于JVM的书籍推荐。

[Center]: /images/20220824/69d109fe71984d5c9664f47a06040d21.png

线程死锁DEMO

发表评论取消回复

还没有评论，来说两句吧...

相关阅读

相关线程死锁

相关【＜线程锁死＞】

相关 Java多线程死锁代码demo

相关线程死锁DEMO

相关线程死锁

相关线程死锁

相关线程死锁

相关线程死锁

相关线程死锁

相关线程死锁