Looking for directions about compiling and tracing OpenJDK

[Jonathan Ben Avraham]

Hi Amos,
I did something like this with the JarSigner code in order to reverse 
engineer it in C, which in the end I was able to do. IMHO, gdb is too high 
a granularity to get anything usable out of the JVM execution. I suspect 
that there is no alternative to sowing System.out.print's throughout the 
code.
Regards,

  - yba


On Tue, 9 Oct 2012, Amos Shapira wrote:

> Date: Tue, 9 Oct 2012 10:57:29 +1100
> From: Amos Shapira <amos.shapira at gmail.com>
> To: linux-il <linux-il at cs.huji.ac.il>
> Subject: Looking for directions about compiling and tracing OpenJDK
> 
> Hi,
> 
> I have an idea which involves going somewhat deep into the bowls of the Java Jar class loader when using the official Oracle JDK 6 (and soon 7).
> To verify this I started looking at the JDK source code but it's not small and I'd like to try to trace through it while it executes Java programs.
> 
> Does anyone here have experience in doing something like this and can give me some useful pointers on how to do this?
> 
> I'd like to be able to do "gdb java -jar HelloWorld.jar" and single-step through the class loader while it loads HelloWorld.jar.
> 
> Thanks,
> 
> --Amos
> 
> 
>

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