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JEP 442: Foreign Function & Memory API (Third Preview) #16951

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ChengJin01 opened this issue Mar 17, 2023 · 2 comments
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JEP 442: Foreign Function & Memory API (Third Preview) #16951

ChengJin01 opened this issue Mar 17, 2023 · 2 comments
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comp:vm jdk21 JEP project:panama Used to track Project Panama related work
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Java 21 (0.42)

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@ChengJin01
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ChengJin01 commented Mar 17, 2023 •
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See https://openjdk.org/jeps/442 with the following changes in terms of APIs which might affect our FFI implementation in Java after the updated code at #16329.

  1. Centralized the management of the lifetimes of native segments in the Arena interface.
  2. Enhanced layout paths with a new element to dereference address layouts.
  3. Provided a linker option to optimize calls to functions that are short-lived and will not upcall to Java (e.g., clock_gettime).
  4. Provided a fallback native linker implementation, based on libffi, to facilitate porting.
  5. Removed the VaList class.

FYI: @tajila, @pshipton
@ChengJin01 ChengJin01 self-assigned this Mar 17, 2023
@ChengJin01 ChengJin01 added comp:vm project:panama Used to track Project Panama related work JEP labels Mar 17, 2023
@tajila tajila added this to the Java 21 milestone Mar 17, 2023
@pshipton pshipton added the jdk21 label Mar 17, 2023
@ChengJin01 ChengJin01 mentioned this issue Mar 23, 2023
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@ChengJin01 ChengJin01 mentioned this issue Apr 3, 2023
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ChengJin01 pushed a commit to ChengJin01/aqa-tests that referenced this issue Apr 3, 2023
[FFI/Jtreg]Exclude VaListTest in JDK20
57aa043 
The change exclude this test suite as we no longer
need VaList as specified in the latest JEP442 at
eclipse-openj9/openj9#16951

Fixes: #eclipse-openj9/openj9/issues/17091

Signed-off-by: ChengJin01 <jincheng@ca.ibm.com>
ChengJin01 pushed a commit to ChengJin01/aqa-tests that referenced this issue Apr 3, 2023
[FFI/Jtreg]Exclude VaListTest in JDK20
578bb08 
The change exclude this test suite as we no longer
need VaList as specified in the latest JEP442 at
eclipse-openj9/openj9#16951

Fixes: eclipse-openj9/openj9/issues/17091

Signed-off-by: ChengJin01 <jincheng@ca.ibm.com>
@ChengJin01 ChengJin01 mentioned this issue Apr 3, 2023
Merged
ChengJin01 pushed a commit to ChengJin01/aqa-tests that referenced this issue Apr 3, 2023
[FFI/Jtreg]Exclude VaListTest in JDK20
b763053 
The change exclude this test suite as we no longer
need VaList as specified in the latest JEP442 at
eclipse-openj9/openj9#16951

Fixes: eclipse-openj9/openj9/issues/17091

Signed-off-by: ChengJin01 <jincheng@ca.ibm.com>
karianna pushed a commit to adoptium/aqa-tests that referenced this issue Apr 4, 2023
[FFI/Jtreg]Exclude VaListTest in JDK20 (#4489)
4f3f360 
The change exclude this test suite as we no longer
need VaList as specified in the latest JEP442 at
eclipse-openj9/openj9#16951

Fixes: eclipse-openj9/openj9/issues/17091

Signed-off-by: ChengJin01 <jincheng@ca.ibm.com>
This was referenced Apr 13, 2023
Merged
Merged
@ChengJin01 ChengJin01 mentioned this issue Apr 28, 2023
Merged
ChengJin01 pushed a commit to ChengJin01/openj9-openjdk-jdk that referenced this issue May 5, 2023
Update FFI specific code for compilation in JDK21
31956ba 
The changes update FFI specific code by disabling/removing
part of our code to pass the compilation in JDK21.

Note:
The modifications in code are based on the new APIs in JDK21 & JEP442
as mentioned at eclipse-openj9/openj9#16951.

Signed-off-by: ChengJin01 <jincheng@ca.ibm.com>
@ChengJin01 ChengJin01 mentioned this issue May 5, 2023
Merged
@ChengJin01 ChengJin01 mentioned this issue May 5, 2023
Merged
@ChengJin01 ChengJin01 mentioned this issue Jun 15, 2023
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ChengJin01 pushed a commit to ChengJin01/openj9-openjdk-jdk21 that referenced this issue Jun 16, 2023
Enable Jtreg test suites for FFI on Power & zLinux in JDK21
3518cf5 
The changes add Power & zLinux support to these
Jtreg test suites in JDK21 plus a few compilation
fixes in the test cases to ensure they are executed
correctly on all supported platforms.

Note:
The PR is part of the FFI work at
eclipse-openj9/openj9#16951

Signed-off-by: Cheng Jin <jincheng@ca.ibm.com>
This was referenced Jun 16, 2023
Closed
Closed
ChengJin01 pushed a commit to ChengJin01/openj9 that referenced this issue Jun 22, 2023
Update the FFI specific code in JDK21 for JEP442
5bd5a7c 
The modifications are based on the latest APIs in JDK21
to support JEP442 as mentioned at eclipse-openj9#16951.

Signed-off-by: ChengJin01 <jincheng@ca.ibm.com>
ChengJin01 pushed a commit to ChengJin01/openj9 that referenced this issue Jul 5, 2023
Update the FFI specific code in JDK21 for JEP442
29c3751 
The modifications are based on the latest APIs in JDK21
to support JEP442 as mentioned at eclipse-openj9#16951.

Signed-off-by: ChengJin01 <jincheng@ca.ibm.com>
ChengJin01 pushed a commit to ChengJin01/openj9 that referenced this issue Jul 5, 2023
Update the FFI specific code in JDK21 for JEP442
4134c7f 
The modifications are based on the latest APIs in JDK21
to support JEP442 as mentioned at eclipse-openj9#16951.

Signed-off-by: ChengJin01 <jincheng@ca.ibm.com>
@ChengJin01 ChengJin01 mentioned this issue Jul 27, 2023
Closed
@ChengJin01 ChengJin01 mentioned this issue Aug 18, 2023
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The support on the union type in JDK21 is implemented at #18291.

@ChengJin01
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Functionally everything related to JDK21 has been implemented, including the union support via #18291.

@pshipton pshipton closed this as completed Nov 1, 2023
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