Review Request: 8238358: Implementation of JEP 371: Hidden Classes

Mandy Chung mandy.chung at
Sat Apr 18 21:09:57 UTC 2020

On 4/18/20 12:47 AM, Chris Plummer wrote:
>> It's a link to 
>> This is how the current JVM TI spec defines.
> Since it looks like this reference was present before your changes, I 
> guess it's ok to leave it, but like JDWP maybe a bug should be filed 
> to clean it up.

Right, they are existing reference.  I'll let Serguei to file a JBS 
issue to follow up.

> Regarding your JNI spec reference, it say "The JNI uses the Java VM’s 
> representation of type signatures" and then has a table called "Java 
> VM Type Signatures". No where in the JNI spec do you see "JNI 
> Signature" or "JNI Type Signature". It seems we should always just use 
> "Type Signature"?

I agree that the svc specs should be examined and use the terminologies 

> Even the JVMTI spec is not consistent. It has a couple of references 
> to JNI Type Signature as links to the JNI spec, but also says "type 
> signatures" in a couple of places, including for 
> GetLocalVariableTable() which refers the the JVMS: "The local 
> variable's type signature, encoded as a modified UTF-8 string. The 
> signature format is the same as that defined in The Java™ Virtual 
> Machine Specification, Chapter 4.3.2. "


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