Re: Get the runtime return value of a method.

Thank you so much.

Zhongxian

On Tue, Jun 29, 2010 at 1:39 PM, Peter Veentjer <[email protected]>wrote:

> Duplicating the return value on the stack looks like a good solution to me.
>
> The only thing you need to do is to transform all IRETURN/ARETURN etc by
> duplicating the value on the stack and add your additional logic in front of
> the XRETURN. Make sure that the size of the stack after your logic has
> consumed the duplicate value is the same as before making the change. And
> also make sure that you deal with category 1 (int, float, Object etc) and
> category 2 operands (Long/Double) on the stack (so DUP and DUP2).
>
> On Mon, Jun 28, 2010 at 6:25 PM, Zhongxian Gu <[email protected]> wrote:
>
>> Hi,
>>
>> I am thinking to use ASM to get the return value of a method call in
>> run-time. What I've thought is to dup the value in stack before return, and
>> use one to print to a log file, and return the other. I am not sure whether
>> it is correct or not? I wonder if someone has used ASM to do that. Could you
>> guys give me some hint?
>>
>> Thanks.
>>
>> Best
>>
>> Zhongxian
>>
>> --
>> Zhongxian Gu
>> http://wwwcsif.cs.ucdavis.edu/~gu/ <http://wwwcsif.cs.ucdavis.edu/%7Egu/>
>> Ph.D. Student in Computer Science, UC Davis
>> 2249 Kemper Hall
>>
>>
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>>
>


-- 
Zhongxian Gu
http://wwwcsif.cs.ucdavis.edu/~gu/
Ph.D. Student in Computer Science, UC Davis
2249 Kemper Hall

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