Exclude the FFI specific java code(Incubator) from Java19

[ChengJin01]

The change is to ensure that the FFI specific java code
in the incubator module only works for Java 17 & 18.

Signed-off-by: Cheng Jin jincheng@ca.ibm.com

[ChengJin01]

We need to exclude the existing code in the incubator module from being compiled in Java 19 before ibmruntimes/openj9-openjdk-jdk#443 gets merged given all FFI specific APIs (with updated code) are moved from the incubator module to java.base, in which case the existing code here fails to compile due to the missing APIs in the incubator module in Java 19.

[ChengJin01]

Reviewer: @tajila
FYI: @pshipton

[tajila]

Jenkins test sanity,extended plinux jdknext

[tajila]

Some compile failures

* For target jdk_modules_jdk.incubator.foreign__the.jdk.incubator.foreign_batch:
15:20:28  /home/jenkins/workspace/Build_JDKnext_ppc64le_linux_Personal/src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/abi/aarch64/CallArranger.java:157: error: method getBoundMethodHandle in class ProgrammableInvoker cannot be applied to given types;
15:20:28          MethodHandle handle = ProgrammableInvoker.getBoundMethodHandle(mt, cDesc);
15:20:28                                                   ^
15:20:28    required: no arguments
15:20:28    found:    MethodType,FunctionDescriptor
15:20:28    reason: actual and formal argument lists differ in length
15:20:28  /home/jenkins/workspace/Build_JDKnext_ppc64le_linux_Personal/src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/abi/ppc64/aix/CallArranger.java:51: error: method getBoundMethodHandle in class ProgrammableInvoker cannot be applied to given types;
15:20:28  		MethodHandle handle = ProgrammableInvoker.getBoundMethodHandle(mt, cDesc);
15:20:28  		                                         ^
15:20:28    required: no arguments
15:20:28    found:    MethodType,FunctionDescriptor
15:20:28    reason: actual and formal argument lists differ in length
15:20:28  /home/jenkins/workspace/Build_JDKnext_ppc64le_linux_Personal/src/jdk.incubator.foreign/share/classes/jdk/internal/foreign/abi/ppc64/sysv/CallArranger.java:51: error: method getBoundMethodHandle in class ProgrammableInvoker cannot be applied to given types;
15:20:28  		MethodHandle handle = ProgrammableInvoker.getBoundMethodHand

@ChengJin01 are there dependant changes required here?

[ChengJin01]

@tajila, the failures are expected as we must exclude the existing downcall specific code from jdknext(Java 19) as they become invalid once the new changes of https://github.com/ibmruntimes/openj9-openjdk-jdk in openj9-staging are merged to open9, in which case all code here will be moved to java.base with modifications on imported packages/new APIs.

We probably need to wait for the new changes to get merged to open9 if we need to verify on jdknext(Java 19) via jenkins.

[ChengJin01]

I notice the new API changes in Java 19 is being merged from openj9-staging to openj9 at https://github.com/ibmruntimes/openj9-openjdk-jdk/tree/openj9/src/java.base/share/classes/java/lang/foreign but has not yet finished promoting now. So the changes here will need to verified with Jenkins once the promotion is done so as to ensure the Java18 specific code is excluded correctly in Java 19 in which case we will have our new code in Java 19 to take over from there.

[tajila]

jenkins compile amac jdknext

[tajila]

@ChengJin01 can you please rebase your changes

[ChengJin01]

@tajila, the conflict has been resolved.

[tajila]

jenkins compile plinux jdknext