[ltt-dev] UST Instrumenting function entries and exits

[Matthew Khouzam]

We could do a compromise and save the string the when there is a new
address. There are many caching schemes that can work.

Thanks for the input Francis.

On 11-05-12 02:18 PM, Francis Giraldeau wrote:
> On Thu, 2011-05-12 at 13:32 -0400, Matthew Khouzam wrote:
>> Hello world,
>> I just made a little program that I'm testing out and want some opinions
>> now that Mathieu D and Nils are not able to read their emails. ;)
>>
>> This is a shared object (or code injected straight into the source) that
>> will allow ust calls to be hooked onto the function entries and exits.
> IMHO, this is truly a killer feature for UST! I wonder what is the
> performance difference between this technique with UST compared to gprof
> and callgrind (valgrind tool).
>
> For making this a real feature thought, it would be nice to save the
> address, not the string itself. Could it be convenient to save in the
> trace the function name string the first time the function is hit, then
> the symbol table at analysis time would not be required?
>
> Anyway, very interesting stuff!
>
> Francis
>
>
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