From Panama 17 to 19, ability to get M1?

[Maurizio Cimadamore]

Hi Martin,
jextract has multiple branches - you should switch to the jdk19 branch, 
and then you will find all the samples working against jdk19.

I suggest you do that first before doing jdk20 (for which there's no 
available downloadable jextract binaries yet).

A binary build for jextract is available here:

https://jdk.java.net/jextract/

Note that this page contains links to the correct bits of the 
documentation (including jextract branch and samples).

This should be enough to get started with 19. As soon as Java 20 ships, 
the same will be available for Java 20.

Maurizio

On 28/12/2022 16:01, Martin Pernollet wrote:
> Thank you. I know these documents and rather lacks complete exemples 
> that can work for an identified JDK version.
>
> I went back to JExtract samples, especially the opengl teapot 
> <https://urldefense.com/v3/__https://github.com/openjdk/jextract/blob/master/samples/opengl/Teapot.java__;!!ACWV5N9M2RV99hQ!Kerbjc2UKkc4goX1QR-WkkEnACuyafoEWQ0nochEnCQ0VbVq_Ro15__pJVthqwsrTgatzLaSx9ddWt-hfVVYruFAS-H77hIGI1Mhfg$>, 
> but I can't compile it with JDK 19... seamingly the imports refer to 
> the JDK 20 package names 
> <https://urldefense.com/v3/__https://github.com/openjdk/jextract/blob/master/samples/opengl/Teapot.java*L32__;Iw!!ACWV5N9M2RV99hQ!Kerbjc2UKkc4goX1QR-WkkEnACuyafoEWQ0nochEnCQ0VbVq_Ro15__pJVthqwsrTgatzLaSx9ddWt-hfVVYruFAS-H77hL2GhS8mg$>.
>
> What I still miss is
>
> import static jdk.incubator.foreign.CLinker.C_INT
>
>
> and other C_TYPE.
>
>
> They where static constants in JDK17 but then have gone. Where should 
> we find this as of JDK19?
>
>
> Thanks in advance!
>
> ------- Original Message -------
> Le mercredi 28 décembre 2022 à 14:34, Maurizio Cimadamore 
> <maurizio.cimadamore at oracle.com> a écrit :
>
>> Hi,
>> I suggest you start looking at some of the documents we have 
>> available to get started - for JDK 19 you can look here:
>>
>> https://github.com/openjdk/panama-foreign/blob/21452ec32b27ba906ec06253e4a7af9037728174/doc/panama_memaccess.md
>>
>> In short, you always need to provide a layout constant of the right 
>> kind when doing allocation using an allocator (and also when doing 
>> dereference).
>>
>> Value layout constants are provided in the ValueLayout class (e.g. 
>> ValueLayout.JAVA_DOUBLE).
>>
>> If you use jextract, additional constants (e.g. C_INT, C_LONG, ...) 
>> will be provided.
>>
>> On 23/12/2022 16:20, Martin Pernollet wrote:
>>> Hi,
>>>
>>> Would anyone suggest examples showing how to use Panama 19 instead 
>>> of 17? A couple of things have changed ( e.g. how to use the new
>>> locator.allocateArray(new ValueLayout.OfDouble(
>>> , and deal with all other datatypes, strings, etc).
>>>
>>> One additional question : when will ARM be supported to run panama 
>>> on Apple M1?
>>
>> Apple M1 is mostly supported on JDK 19 - modulo few corner cases 
>> which have been addressed in Java 20.
>>
>> Maurizio
>>
>>>
>>> Regards,
>>>
>>> Martin
>
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