On Tue, 6 Apr 2021 02:46:40 GMT, Yasumasa Suenaga <ysuen...@openjdk.org> wrote:
>> I was actually just referring to `--add-modules`, but github added a few >> lines before the one I selected. >> >> I guess I'm not fully understanding what `rmid` is for in this context, and >> how it relates to the `rmiregistry` command. I thought it was starting the >> registry, but that does not seem to be it's primary purpose (maybe it starts >> it as a side affect). Also, it is deprecated. > > SA has RMI remote object, it will be handled in RMI registry. > We can see following exception without `--add-modules`. > > $ jhsdb debugd --pid 40339 --disableregistry --hostname localhost > --registryport 1098 > Attaching to process ID 40339 and starting RMI services, please wait... > Error attaching to process or starting server: > sun.jvm.hotspot.debugger.DebuggerException: java.rmi.ServerException: > RemoteException occurred in server thread; nested exception is: > java.rmi.UnmarshalException: error unmarshalling arguments; nested > exception is: > java.lang.ClassNotFoundException: > sun.jvm.hotspot.debugger.remote.RemoteDebugger > at > jdk.hotspot.agent/sun.jvm.hotspot.RMIHelper.rebind(RMIHelper.java:75) > at > jdk.hotspot.agent/sun.jvm.hotspot.HotSpotAgent.setupDebugger(HotSpotAgent.java:380) > at > jdk.hotspot.agent/sun.jvm.hotspot.HotSpotAgent.go(HotSpotAgent.java:330) > at > jdk.hotspot.agent/sun.jvm.hotspot.HotSpotAgent.startServer(HotSpotAgent.java:216) > at > jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.runDEBUGD(SALauncher.java:437) > at > jdk.hotspot.agent/sun.jvm.hotspot.SALauncher.main(SALauncher.java:499) > Caused by: java.rmi.ServerException: RemoteException occurred in server > thread; nested exception is: > java.rmi.UnmarshalException: error unmarshalling arguments; nested > exception is: > java.lang.ClassNotFoundException: > sun.jvm.hotspot.debugger.remote.RemoteDebugger > at > java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:389) > at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200) > at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197) > at > java.base/java.security.AccessController.doPrivileged(AccessController.java:691) > at > java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196) > at > java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587) > at > java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828) > at > java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705) > at > java.base/java.security.AccessController.doPrivileged(AccessController.java:391) > at > java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704) > at > java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) > at > java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) > at java.base/java.lang.Thread.run(Thread.java:831) > at > java.rmi/sun.rmi.transport.StreamRemoteCall.exceptionReceivedFromServer(StreamRemoteCall.java:303) > at > java.rmi/sun.rmi.transport.StreamRemoteCall.executeCall(StreamRemoteCall.java:279) > at java.rmi/sun.rmi.server.UnicastRef.invoke(UnicastRef.java:380) > at > java.rmi/sun.rmi.registry.RegistryImpl_Stub.rebind(RegistryImpl_Stub.java:158) > at java.rmi/java.rmi.Naming.rebind(Naming.java:177) > at > jdk.hotspot.agent/sun.jvm.hotspot.RMIHelper.rebind(RMIHelper.java:64) > ... 5 more > Caused by: java.rmi.UnmarshalException: error unmarshalling arguments; nested > exception is: > java.lang.ClassNotFoundException: > sun.jvm.hotspot.debugger.remote.RemoteDebugger > at > java.rmi/sun.rmi.registry.RegistryImpl_Skel.dispatch(RegistryImpl_Skel.java:157) > at > java.rmi/sun.rmi.server.UnicastServerRef.oldDispatch(UnicastServerRef.java:466) > at > java.rmi/sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:296) > at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:200) > at java.rmi/sun.rmi.transport.Transport$1.run(Transport.java:197) > at > java.base/java.security.AccessController.doPrivileged(AccessController.java:691) > at > java.rmi/sun.rmi.transport.Transport.serviceCall(Transport.java:196) > at > java.rmi/sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:587) > at > java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:828) > at > java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:705) > at > java.base/java.security.AccessController.doPrivileged(AccessController.java:391) > at > java.rmi/sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:704) > at > java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1135) > at > java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635) > at java.base/java.lang.Thread.run(Thread.java:831) > Caused by: java.lang.ClassNotFoundException: > sun.jvm.hotspot.debugger.remote.RemoteDebugger > at > java.base/java.net.URLClassLoader.findClass(URLClassLoader.java:432) > at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:586) > at > java.rmi/sun.rmi.server.LoaderHandler$Loader.loadClass(LoaderHandler.java:1207) > at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:519) > at java.base/java.lang.Class.forName0(Native Method) > at java.base/java.lang.Class.forName(Class.java:466) > at > java.rmi/sun.rmi.server.LoaderHandler.loadClassForName(LoaderHandler.java:1221) > at > java.rmi/sun.rmi.server.LoaderHandler.loadProxyInterfaces(LoaderHandler.java:731) > at > java.rmi/sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:674) > at > java.rmi/sun.rmi.server.LoaderHandler.loadProxyClass(LoaderHandler.java:611) > at > java.rmi/java.rmi.server.RMIClassLoader$2.loadProxyClass(RMIClassLoader.java:646) > at > java.rmi/java.rmi.server.RMIClassLoader.loadProxyClass(RMIClassLoader.java:311) > at > java.rmi/sun.rmi.server.MarshalInputStream.resolveProxyClass(MarshalInputStream.java:254) > at > java.base/java.io.ObjectInputStream.readProxyDesc(ObjectInputStream.java:1944) > at > java.base/java.io.ObjectInputStream.readClassDesc(ObjectInputStream.java:1886) > at > java.base/java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:2196) > at > java.base/java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1706) > at > java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:496) > at > java.base/java.io.ObjectInputStream.readObject(ObjectInputStream.java:454) > at > java.rmi/sun.rmi.registry.RegistryImpl_Skel.dispatch(RegistryImpl_Skel.java:154) > ... 14 more > > As an option, we can also use RMI registry which is started by debugd as > following: > > * console 1 > * `jhsdb debugd --disableregistry --pid 40859` > * console 2 > * `jhsdb -J-Dsun.jvm.hotspot.rmi.serverNamePrefix=second debugd > --disableregistry --pid 40860` Both of the above are using `--disableregistry`. Is that what you meant to do? I would think that you would not want that on the first one. ------------- PR: https://git.openjdk.java.net/jdk/pull/3233
