Am 07.07.2016 um 14:59 schrieb E. G. Patrick Bos: > I'm using callgrind to analyse a c++ program (roofit) which builds a > large tree of many interdependent objects of a few classes. Ideally, I > would like to track not only the function calls, but also from (and to) > which object they are called, so for instance including the address of > the passed `this` pointer. > > Is such a thing possible and/or has it been tried before? And if not, > would it be difficult to implement?
Not really. When a new function is called, you can make up a new fn_node struct whose name can embed the address of the 'this' pointer. However, you would get a separate function called for every object. Not sure this scales well. Quite some time ago I had a patch doing similar stuff, but looking up the stack or registers for parameter values depends on the calling convention/ABI which is architecture/OS specific. I only did this for amd64, and it was working nice, but it never went in. I can search for the patch and send it to you. Josef > The alternative would be to build some kind of accounting system into > the base classes in my code itself, but if it's easy in valgrind, that > would be far preferable, since others can then also use it and I > wouldn't have to mess up my own code :) > > Without having any knowledge of the valgrind source, I would imagine > that it could be implemented similarly or as a generalization of the > seperate-callers options. > > Cheers, > Patrick > > ------------------------------------------------------------------------------ > Attend Shape: An AT&T Tech Expo July 15-16. Meet us at AT&T Park in San > Francisco, CA to explore cutting-edge tech and listen to tech luminaries > present their vision of the future. This family event has something for > everyone, including kids. Get more information and register today. > http://sdm.link/attshape > _______________________________________________ > Valgrind-users mailing list > Valgrind-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/valgrind-users > ------------------------------------------------------------------------------ _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
