Add support for cross-OS replay
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- Dominant language
- C++
- Stars
- 10.7k
- Forks
- 662
- Avg merge
- 2d 3h
- Merged PRs (30d)
- 2
Description
This is a mostly-crazy idea but I wanted to jot it down while it's fresh.
rr traces are actually quite OS-independent (modulo lack of filesystem independence from not using reflink), because rr essentially records the OS "semantics". It sounds a little crazy, but it wouldn't be conceptually hard to replay rr traces on OS X or even win32 as long as (i) can set up syscall insns to trap to tracer; (ii) can program perf counter interrupts for tracees.
Not conceptually hard, but it'd be a lot of work. Also unclear how debugging would work.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
The issue describes cross-OS replay for rr traces, including syscall trapping and perf counter interrupts on OS X or win32. Start by investigating whether those mechanisms are available on the target operating systems; done would include replaying traces across operating systems and determining how debugging should work.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- cpp
- Domain
- devtools, operating-systems
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 15/100