gprof

[Michael Trimarchi]

Ken Raeburn wrote:

> On Sep 15, 2005, at 04:45, Michael Trimarchi wrote:
>
>> Hi all,
>> I'd like to profile multithread application using gprof, but I  
>> cannot profile thread !!! why?
>> Is the ITIMER signal problem?
>> regards
>> Michael
>
>
> I've tried this before... yes, depending on the system, you may need  
> to play some games after thread creation to start profiling in the  
> newly created thread, such as explicitly scheduling an interrupt  
> timer.  But also, if you care about the accuracy of the results, you  
> may need to modify the C runtime support code for profiling, which  
> typically updates the per-function data in a manner that is not  
> thread-safe.
>
> Unfortunately, I don't have any code to show you for either issue,  
> right now...
>
> Ken

 >But also, if you care about the accuracy of the results, you  may need 
to modify the C runtime support code for >profiling, which  typically 
updates the per-function data in a manner that is not  thread-safe.
may you explain more precisely this point?
Regards
Michael