RFR: 8272736: [JVMCI] Add API for reading and writing JVMCI thread locals [v2]

[Coleen Phillimore]

On Fri, 20 Aug 2021 04:45:31 GMT, Tom Rodriguez <never at openjdk.org> wrote:

>> src/hotspot/share/runtime/thread.hpp line 961:
>> 
>>> 959: 
>>> 960:   // Fast thread locals for use by JVMCI
>>> 961:   jlong      _jvmci_reserved0;
>> 
>> Update: please ignore (hit wrong button) I now see this coming from Java.
>> 
>> We are trying to avoid use of Java types in code that does not directly interact with Java. Does this really need to be a jlong or does it just need to be 64-bit? Or does it need to be the same size as a ptr whatever that may be?
>
> Yes that's right.  Since it's now exposed through Java it really needs to be a Java compatible type.

I had that same thought but I agree with Tom.  We want a Java type here.

-------------

PR: https://git.openjdk.java.net/jdk/pull/5192