【发布时间】:2021-11-13 23:02:21
【问题描述】:
我正在尝试以混合模式在 ubuntu 上运行 jstack:
$ jstack -m 7219
结果是这个异常:
Attaching to process ID 7219, please wait...
Debugger attached successfully.
Server compiler detected.
JVM version is 25.162-b12
Exception in thread "main" java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at sun.tools.jstack.JStack.runJStackTool(JStack.java:140)
at sun.tools.jstack.JStack.main(JStack.java:106)
Caused by: java.lang.RuntimeException: Unable to deduce type of thread from address 0x00007f02cc002800 (expected type JavaThread, CompilerThread, ServiceThread, JvmtiAgentThread, or SurrogateLockerThread)
at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:166)
at sun.jvm.hotspot.runtime.Threads.first(Threads.java:150)
at sun.jvm.hotspot.tools.PStack.initJFrameCache(PStack.java:200)
at sun.jvm.hotspot.tools.PStack.run(PStack.java:71)
at sun.jvm.hotspot.tools.PStack.run(PStack.java:58)
at sun.jvm.hotspot.tools.PStack.run(PStack.java:53)
at sun.jvm.hotspot.tools.JStack.run(JStack.java:66)
at sun.jvm.hotspot.tools.Tool.startInternal(Tool.java:260)
at sun.jvm.hotspot.tools.Tool.start(Tool.java:223)
at sun.jvm.hotspot.tools.Tool.execute(Tool.java:118)
at sun.jvm.hotspot.tools.JStack.main(JStack.java:92)
... 6 more
Caused by: sun.jvm.hotspot.types.WrongTypeException: No suitable match for type of address 0x00007f02cc002800
at sun.jvm.hotspot.runtime.InstanceConstructor.newWrongTypeException(InstanceConstructor.java:62)
at sun.jvm.hotspot.runtime.VirtualConstructor.instantiateWrapperFor(VirtualConstructor.java:80)
at sun.jvm.hotspot.runtime.Threads.createJavaThreadWrapper(Threads.java:162)
... 16 more
PID 为 7219 的进程是使用与 jstack 相同的用户启动的。
【问题讨论】:
-
这可能是 HotSpot Serviceability Agent 中的错误,也可能是在 JVM 处于不一致状态时尝试获取堆栈跟踪。在这两种情况下,你几乎无能为力。
-
为什么要
-m模式?如果您对非 Java 堆栈感兴趣,那么gdb应该是更好的工具。 -
我正在观察 Web 应用程序中长时间运行的请求。线程转储指向本机类加载方法。我在stackoverflow.com/questions/49507981/… 的问题导致了这个工具问题。
标签: java multithreading ubuntu jstack