Call for Discussion: New Project: Leyden

[mark.reinhold at oracle.com]

2020/5/18 15:43:34 -0700, jianglizhou at google.com:
> Didn't see this discussion until today. I think this will be welcomed by
> Java developers! How do we participate in the project and coordinate?

I’ll shortly start the CFV to create the Project.  Once the Project
exists, your participation will be most welcome!

> I have been experimenting with preserving pre-initialized classes (at build
> time) as part of the CDS archive image. Class pre-initialization can help
> field and method pre-resolution and generate better AOT code. Here is a class
> pre-resolution & pre-initialization proposal
> <https://docs.google.com/document/d/17RV8W6iqJj9HhjGSO9k1IXfs_9lvHDNgxxr8pFoeDys/edit?usp=sharing>
> that enhances
> the existing Hotspot heap archiving and provides more general support to
> pre-initialize classes and preserve static field values for both JDK
> classes and application classes (loaded by system class loader).

Sorry, but for IP clarity could you please either post that document to
cr.openjdk.java.net or enter it into a JBS issue?  (Likewise for the
slides that you mention later on.)

>                                                                  I adopted
> the annotation approach in the proposal, after comparing it to other
> alternatives, please see details in the design doc.

In a prototype, using an annotation to identify pre-initializable
classes is fine.  In the long run, however, we’ll likely wind up with a
keyword since annotations must not be used to change language semantics.

- Mark