Invalid layout of well-known class: java.lang.Thread with Java 11.0.11+8

[ebourg]

I tried using DCVEM 11.0.10+5 with OpenJDK 11.0.11+8 and I got the following error:

$ java -dcevm -version
[0.017s][error][class] Name nativeParkEventPointer should be in the SymbolTable since its class is loaded
Error occurred during initialization of VM
Invalid layout of well-known class: java.lang.Thread

[skybber]

Will you get the same error if you combine std 11.0.5 with 11.0.8? I don't think that it is related to dcevm, since dcevm11 code is pretty separated from the standard JVM code and it is not involved unless you use the advanced hotswap.

[ebourg]

Do you mean that I should try rebasing DCEVM 11.0.10+5 on top of OpenJDK 11.0.11+8 ?

[skybber]

I did not read used versions properly. It seems strange for me now since the code of hotspot/src/share/vm/classfile/javaClasses.cpp has not been changed at nativeParkEventPointer definition for a long time. You can try to use the same version for dcevm and OpenJDK and the same compilation flags.

[ebourg]

Ok I'll give it a try. Do you think you could pull the jdk-11.0.11*_adopt tags into the DCEVM repository?

[skybber]

I'll do that this evening. Btw it can be done if you merge upstream from https://github.com/AdoptOpenJDK/openjdk-jdk11u to master branch.

[ebourg]

Thank you, I wasn't sure about the remote used.

[ebourg]

java -dcevm -version works after rebasing on top of jdk-11.0.11+8

[skybber]

https://github.com/AdoptOpenJDK/openjdk-jdk11u is merged in this repo's master now .

[ebourg]

OpenJDK 11.0.11-ga has been released last week, would it be possible to rebase the dcevm repository and tag a release please?

[skybber]

I'll do that in next days.

[skybber]

11.0.11 is in https://github.com/HotswapProjects/openjdk-jdk11u-dcevm , but Trava build is broken now. I has not resolved it yet (they are closing trava.org and migrate all repos to trava.com) .

[ebourg]

Thank you! It built fine in Debian at least.

[ebourg]

OpenJDK 11.0.12 has been released last week, DCEVM needs a rebase again.