[Soot-list] Is it possible to use Soot to count the byte code instruction of a method

[Eric Bodden]

Hi Anne.

Soot is not the perfect tool for this because, as you may know, almost
all of Soot operates on an intermediate representation called Jimple
that aggregates multiple bytecodes in a single statement. Hence, if
really all you want to do is count bytecodes it would probably be
better to use a more low-level tool like ASM for instance.

Having said that, I am not sure what the relationship is between the
number of bytecodes of a method and its running time. I would suspect
that there is usually not a strong correlation. Methods can have
loops. Also, some instructions are much more expensive than others.
For instance, a field store may trigger swapping in the worst case, or
a new-statement may trigger garbage collection, while a local-variable
assignment is usually very innocent. Pure bytecode counting cannot
capture such differences. But maybe I am misunderstanding what you are
trying to achieve...

Best wishes,
Eric

On 3 August 2011 10:25, anne wu <annesh.love at gmail.com> wrote:
> Hi, every one
>
>      I am doing a project these days that need to measure the cpu running
> time of each method. So I wonder is it possible to use Soot to count the
> byte code instruction of a method? If so, how?
>
>      Any help is appreciate.
>
>      Thank you very much!
>
> Anne
> _______________________________________________
> Soot-list mailing list
> Soot-list at sable.mcgill.ca
> http://mailman.cs.mcgill.ca/mailman/listinfo/soot-list
>
>



-- 
Dr. Eric Bodden, http://bodden.de/
Principal Investigator in Secure Services at CASED
Coordinator of the CASED Advisory Board of Study Affairs
PostDoc at Software Technology Group, Technische Universität Darmstadt
Tel: +49 6151 16-5478    Fax: +49 6151 16-5410
Mailing Address: S2|02 A209, Hochschulstraße 10, 64289 Darmstadt