Op 29 jul. 2016, om 10:41 heeft Josef Weidendorfer <josef.weidendor...@gmx.de> het volgende geschreven:
> 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. If it's not too much trouble, that would be wonderful! Looking forward to receiving it. I'm not too concerned about scaling, so anything you have would be great. Cheers, Patrick > > 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 ------------------------------------------------------------------------------ _______________________________________________ Valgrind-users mailing list Valgrind-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/valgrind-users
