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List:       openjdk-serviceability-dev
Subject:    Re: jdk9 can not load sa.js automatically in jhsdb
From:       Jini George <jini.george () oracle ! com>
Date:       2017-09-21 14:48:39
Message-ID: 033703fc-ac75-3569-5be4-6de48e6070fd () oracle ! com
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Hi Liu Xin,

No, this is not a wrong usage on your part. You are facing the following 
issue:

https://bugs.openjdk.java.net/browse/JDK-8157947

So, at this point, till this is fixed, you would face issues if you try 
to run commands based on the the javascript interface with jhsdb.

Thanks,
Jini.

On 9/17/2017 1:36 PM, Liu Xin wrote:
> Hello, serviceability mail-list,
>
> Jdk9 refactored the CLI for hsdb. I try to catch you up.  With the
> latest openjdk9 build, I always meet the following message when I want
> to use 'console' in GUI.
>
> ./jhsdb hsdb
> //attach pid
> //windows/console
> javax.script.ScriptException: TypeError: sapkg.runtime.VM.getVM is not a
> function in sa.js at line number 54
> Warning! JS Engine can't start, some commands will not be available
>
> I quickly look at it. It seems that it has problem to load 'sa.js'.
> // SA singletons are kept in 'sa' object
> var sa = new Object();
> sa.vm = sapkg.runtime.VM.getVM();
> sa.dbg = sa.vm.getDebugger();
> sa.cdbg = sa.dbg.CDebugger;
>
> I strongly suspect that it didn't invoke
>  sun.jvm.hotspot.runtime.VM.initialize before loading the sa.js.
> is it intentional or just wrong usage of mine?
>
> Please note that I did build nashorn and jjs works perfectly.  I can
> reproduce this problem on linux and macosx.
>
> I took reference of the doc of clhsdb shipping with hotspot source code:
> hotspot/src/jdk.hotspot.agent/doc/clhsdb.html
> is it out of date?  I found it NOT 'Few CLHSDB commands are already
> implemented in JavaScript.'
>
> thanks,
> --lx
>
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