package com.brianway.learning.java.multithread.synchronize.example12;
/**
* Created by Brian on 2016/4/13.
*/
/**
* P107
* 死锁测试
* jstack命令
*/
public class Run12_deadLock {
public static void main(String[] args) {
try {
DealThread t1 = new DealThread();
t1.setFlag("a");
Thread thread1 = new Thread(t1);
thread1.start();
Thread.sleep(100);
t1.setFlag("b");
Thread thread2 = new Thread(t1);
thread2.start();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
/*
输出：
username = a
username = b
---------------------------
G:\mygit\java-learning>jps
4752
7524 Jps
8936 Launcher
(启动Run12_deadLock的main方法)
G:\mygit\java-learning>
G:\mygit\java-learning>jps
4752
8948 AppMain
6344 Jps
8732 Launcher
G:\mygit\java-learning>jstack -l 8948
2016-04-13 15:04:01
Full thread dump Java HotSpot(TM) 64-Bit Server VM (25.25-b02 mixed mode):
"DestroyJavaVM" #13 prio=5 os_prio=0 tid=0x00000000022df000 nid=0x18dc waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Thread-1" #12 prio=5 os_prio=0 tid=0x0000000058773800 nid=0x20f0 waiting for monitor entry [0x0000000059c1f000]
java.lang.Thread.State: BLOCKED (on object monitor)
at com.brianway.learning.java.multithread.synchronize.example12.DealThread.run(DealThread.java:41)
- waiting to lock <0x00000000d61411d0> (a java.lang.Object)
- locked <0x00000000d61411e0> (a java.lang.Object)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"Thread-0" #11 prio=5 os_prio=0 tid=0x000000005875a000 nid=0x1de8 waiting for monitor entry [0x00000000599bf000]
java.lang.Thread.State: BLOCKED (on object monitor)
at com.brianway.learning.java.multithread.synchronize.example12.DealThread.run(DealThread.java:27)
- waiting to lock <0x00000000d61411e0> (a java.lang.Object)
- locked <0x00000000d61411d0> (a java.lang.Object)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"Monitor Ctrl-Break" #10 daemon prio=5 os_prio=0 tid=0x000000005876e800 nid=0x1f50 runnable [0x000000005969f000]
java.lang.Thread.State: RUNNABLE
at java.net.DualStackPlainSocketImpl.accept0(Native Method)
at java.net.DualStackPlainSocketImpl.socketAccept(DualStackPlainSocketImpl.java:131)
at java.net.AbstractPlainSocketImpl.accept(AbstractPlainSocketImpl.java:404)
at java.net.PlainSocketImpl.accept(PlainSocketImpl.java:199)
- locked <0x00000000d621bce8> (a java.net.SocksSocketImpl)
at java.net.ServerSocket.implAccept(ServerSocket.java:545)
at java.net.ServerSocket.accept(ServerSocket.java:513)
at com.intellij.rt.execution.application.AppMain$1.run(AppMain.java:90)
at java.lang.Thread.run(Thread.java:745)
Locked ownable synchronizers:
- None
"Service Thread" #9 daemon prio=9 os_prio=0 tid=0x000000005736f800 nid=0x2194 runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"C1 CompilerThread2" #8 daemon prio=9 os_prio=2 tid=0x0000000058698800 nid=0x2330 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"C2 CompilerThread1" #7 daemon prio=9 os_prio=2 tid=0x0000000058697800 nid=0x96c waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"C2 CompilerThread0" #6 daemon prio=9 os_prio=2 tid=0x0000000058646800 nid=0x1fac waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Attach Listener" #5 daemon prio=5 os_prio=2 tid=0x000000005863a800 nid=0x2268 waiting on condition [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Signal Dispatcher" #4 daemon prio=9 os_prio=2 tid=0x000000005735d000 nid=0x1e2c runnable [0x0000000000000000]
java.lang.Thread.State: RUNNABLE
Locked ownable synchronizers:
- None
"Finalizer" #3 daemon prio=8 os_prio=1 tid=0x0000000057306800 nid=0x62c in Object.wait() [0x000000005836f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000d5f86280> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:142)
- locked <0x00000000d5f86280> (a java.lang.ref.ReferenceQueue$Lock)
at java.lang.ref.ReferenceQueue.remove(ReferenceQueue.java:158)
at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:209)
Locked ownable synchronizers:
- None
"Reference Handler" #2 daemon prio=10 os_prio=2 tid=0x00000000572fd800 nid=0x2254 in Object.wait() [0x000000005862f000]
java.lang.Thread.State: WAITING (on object monitor)
at java.lang.Object.wait(Native Method)
- waiting on <0x00000000d5f85cf0> (a java.lang.ref.Reference$Lock)
at java.lang.Object.wait(Object.java:502)
at java.lang.ref.Reference$ReferenceHandler.run(Reference.java:157)
- locked <0x00000000d5f85cf0> (a java.lang.ref.Reference$Lock)
Locked ownable synchronizers:
- None
"VM Thread" os_prio=2 tid=0x00000000572f7000 nid=0x1ba8 runnable
"GC task thread#0 (ParallelGC)" os_prio=0 tid=0x000000000214d000 nid=0x2274 runnable
"GC task thread#1 (ParallelGC)" os_prio=0 tid=0x000000000214e800 nid=0x1a74 runnable
"GC task thread#2 (ParallelGC)" os_prio=0 tid=0x0000000002150000 nid=0xad8 runnable
"GC task thread#3 (ParallelGC)" os_prio=0 tid=0x0000000002151800 nid=0x668 runnable
"VM Periodic Task Thread" os_prio=2 tid=0x00000000586b0800 nid=0x2150 waiting on condition
JNI global references: 20
Found one Java-level deadlock:
=============================
"Thread-1":
waiting to lock monitor 0x0000000057304218 (object 0x00000000d61411d0, a java.lang.Object),
which is held by "Thread-0"
"Thread-0":
waiting to lock monitor 0x0000000057300228 (object 0x00000000d61411e0, a java.lang.Object),
which is held by "Thread-1"
Java stack information for the threads listed above:
===================================================
"Thread-1":
at com.brianway.learning.java.multithread.synchronize.example12.DealThread.run(DealThread.java:41)
- waiting to lock <0x00000000d61411d0> (a java.lang.Object)
- locked <0x00000000d61411e0> (a java.lang.Object)
at java.lang.Thread.run(Thread.java:745)
"Thread-0":
at com.brianway.learning.java.multithread.synchronize.example12.DealThread.run(DealThread.java:27)
- waiting to lock <0x00000000d61411e0> (a java.lang.Object)
- locked <0x00000000d61411d0> (a java.lang.Object)
at java.lang.Thread.run(Thread.java:745)
Found 1 deadlock.
*/