Re: [rvm-research] eclipse on jikesrvm

[Ian R. <ian...@ma...>]

Hi Yan,

Yan Tang wrote:
> Hi All,
>
> I am still struggling with running eclipse on jikesrvm.
>
> I tried many different config versions:
>
> Jikesrvm               eclipse
> 2.4.2                      3.1.2           directly died
> 2.4.2                      3.1.0           directly died
> 2.4.1                      3.1.2           directly died
> 2.4.1                      3.1.0           directly died
> 2.4.6                      3.1.0           can only see "launching
> workspace window"
> 2.4.6                      3.1.2           can only see "launching
> workspace window"
>
> All of them are failed.
>   

There are loads of issues with all the old RVMs, really you should be 
looking to run with 2.9.2 or the SVN head.

> I really want to know is there anyone tried to run eclipse 3.1.* on 2.4.* ?
>   

I ran 3.2 on 2.4.5 or 2.4.6 iirc. Remember that AWT was fundamentally 
broken for a long time in the 2.4 releases. I ran eclipse when I fixed 
the AWT peers and stuck a screen shot on my website.

> All of them failed at here:
>
> // this is the address of the malloc'ed JavaVM struct (one per VM)
> private static Address JavaVM;
>
> private static native Address createJavaVM();
>
> private static int GetJavaVM(VM_JNIEnvironment env, Address StarStarJavaVM) {
>  if (traceJNI) VM.sysWrite("JNI called: GetJavaVM \n");
>
>  if (JavaVM == null) {
>    JavaVM = createJavaVM();          <---- failed here, unimplemented method
>  }
>
>  if (traceJNI) VM.sysWriteln(StarStarJavaVM);
>  StarStarJavaVM.store(JavaVM);
>
>  return 0;
> }
>
> I think it is because creatJavaVM() this function is a jni function,
> and it is not implemented in Jikesrvm 2.4.2 .
>
> I read the user guide of jikesrvm, it said something like:
>
> Directly-Exported Invocation Interface Functions These functions
> (GetDefaultJavaVMInitArgs,
>     JNI CreateJavaVM, and JNI GetCreatedJavaVMs) are not implemented.
> This is because we
>     do not provide a virtual machine library that can be linked
> against, nor do we support native
>     applications that launch and use an embedded Java VM. There is no
> inherent reason why
>     this could not be done, but we have not done so yet.
>
> Note that it said "JNI CreateJavaVM is not implemented",  I guess this
> is the reason.
>
> HOWEVER, i know at least two or three guys posted msg before in the newsgroup
> said they can run eclipse 3.1 with jikesrvm 2.4.2 .
>
> I am really frustrated with this error, ;-(
>   

So I don't really want to try a really, really, really.... old version 
of the RVM and a really old version of eclipse. But I tried running 
eclipse 3.2 on the RVM without success. So I created a JIRA tracker:

http://jira.codehaus.org/browse/RVM-332

It did, however, run eclipse for a short while before failing :-)

Regards,
Ian