dtrace discuss - May 2010 - Translating a pointer to a user function name + offset

Hi

I wondered if given a pointer to an instruction in a user C function,
DTrace can print out the user function name and offset of that
instruction.  That is, I''m looking for something like the %a flag but
for user functions and not only for kernel functions.

I know that in the DTrace Java API this functionality exists.  In
particular, the Consumer class has both the lookupKernelFunction and
lookupUserFunction methods (where the latter also requires the process
id as an argument, in addition to the instruction pointer).  I can''t
find the equivalent mechanism for DTrace scripts, though.

Thanks,
Yossi
-- 
This message posted from opensolaris.org

On Mon, May 10, 2010 at 11:16 AM, Yossi Lev <yossi.lev at oracle.com>
wrote:
> Hi
>
> I wondered if given a pointer to an instruction in a user C function,
> DTrace can print out the user function name and offset of that
> instruction. ?That is, I''m looking for something like the %a flag
but
> for user functions and not only for kernel functions.
>
Are you looking for %A?

Chad

Chad Mynhier wrote:
> On Mon, May 10, 2010 at 11:16 AM, Yossi Lev <yossi.lev at oracle.com>
wrote:
>   
>> Hi
>>
>> I wondered if given a pointer to an instruction in a user C function,
>> DTrace can print out the user function name and offset of that
>> instruction.  That is, I''m looking for something like the %a
flag but
>> for user functions and not only for kernel functions.
>>
>>     
>
> Are you looking for %A?
>   

Yes, that works, thanks!

Yossi

> Chad
>