I have the feeling that what @janismac is looking for is this: [
https://github.com/mozilla/rr](
https://github.com/mozilla/rr)
But let's take a step back in this discussion.
We have two ways to debug our applications, both these approaches have their limitations and advantages.
**1. Using classical debugging tools like GDB, which interrupt execution through breakpoints.**
The "breakpoints" approach does not work well in multiprocess and real-time applications, as we all know (you can not alter the execution of a distributed system or a control loop without modifying its behavior).
**2. Using logging and visualization tools.**
I am personally in favor of the "**log absolutely everything**" approach. This is what I am working on, i.e. good visualization tools (in addition to the awesome Rviz) and VERY low overhead logging libraries. I don't know how far I can go into the rabbit's hole but I will try anyway ;)
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