Re: [Valgrind-users] Add markers when using massif

[Philippe W. <phi...@sk...>]

On Thu, 2017-09-07 at 09:03 +0200, Frederic DUMOULIN wrote:
> Hi,
> 
> I'm using valgrind + massif tool to observe the heap usage.
> 
> I have an application binary using a shared library which does the 
> memory allocations.
> There are few functions in the API but they are called many times. So 
> it's difficult to identify them in the visualizer only with the stack.
> 
> Is there any way to add markers into the program which can be shown in 
> the visualizer ?

Valgrind 3.13 has added a new way to visualise memory usage
and/or memory leaks.

Basically, memcheck/massif and helgrind can produce the memory usage
(or leaks for memcheck) in a kcachegrind compatible file.
The kcachegrind visualiser can then be used to visualise memory usage,
and e.g. filter/select based on function names appearing in the stack
trace.

To produce such a report at the end of execution, you can give the
option --xtree-memory=full

You can also produce such files on demand during execution from
a shell; by doing :
   vgdb xtmemory


Philippe