On Mon, 2021-05-24 at 10:31 -0700, Martin Licht via Valgrind-users wrote:
> Hello,
> 
> I think the Valgrind stack tracer is pretty great and I would like to use it 
> as a substitute for `backtrace` in my C++ debug builds.
> 
> A blog post by Nicholas Nethercote (Using Valgrind to get stack traces) 
> describes a similar idea:
> https://blog.mozilla.org/nnethercote/2011/01/11/using-valgrind-to-get-stack-traces/
> 
> However, while this is already fairly elegant, I am wondering whether this 
> can be done without invoking the program under valgrind.
> 
> If the Valgrind stack tracer were a simple #include that would be best. 
> Alternatively, a means of including any necessary valgrind framework into the 
> debug build would be helpful. I appreciate your feedback.
The valgrind unwinder is very fast, so having it as a "standalone" library that 
can be
linked to a normal executable and used outside of the valgrind JIT framework 
would
be really nice. 

However, I think this unwind logic/code has a lot of dependencies
to other parts of valgrind (debug info reader, address space manager, valgrind 
own malloc
library, valgrind log and debug framework, ...).

So, clearly not a small task to 'cleanly' lib-ify the valgrind unwinder,
in particular if this library must then be usable both in a valgrind context 
and in a
'native' context.

Philippe




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