[PATCH grout] replace clock_t with Grout specific high-res clock

[Morten Brørup]

> From: Robin Jarry [mailto:rjarry at redhat.com]
> Sent: Sunday, 24 May 2026 22.24
> 
> Morten Brørup, May 24, 2026 at 20:39:
> > Nanosecond resolution opens possibilities, which are not available
> > with microsecond resolution, e.g. shaping and pacing (which
> > I understand is WIP); and the type it replaces also uses 64 bit, so
> > the resolution improvement does not have a memory cost.
> >
> > Yes, in the long term, I plan to add less precise types.
> 
> Ack.
> 
> > I can fix long lines.
> > What's the max number of characters per line?
> 
> 100 columns.
> 
> https://github.com/DPDK/grout/blob/v0.15.0/.clang-format#L59
> https://github.com/DPDK/grout/blob/v0.15.0/devtools/check-comments#L40
> 
> > How to continue a long line on the next line in Grout?
> 
> Just write it however you want or keep it in a single line, clang-
> format
> will make it follow the coding style rules :)

I haven't got the expected version of clang-format up and running yet, so I tried fixing it manually, and submitted v2.
I hope I caught it all.

> 
> > "make lint" spews out warnings about things I didn't touch.
> > Do I need to set up some configuration file or pass special
> parameters for this to work?
> >
> > My build server is running: Ubuntu 24.04.<redacted> LTS
> >
> > $ clang-format --version
> > Ubuntu clang-format version 18.1.3 (1ubuntu1)
> 
> This is way too old. Unfortunately, clang-format has breaking changes
> on
> every release... I think the oldest version we settled on is 21 (22 is
> the latest upstream). This means running from Ubuntu/Debian packages is
> practically not possible as they are always lagging behind.
> 
> The most practical solution is to run it from a container:
> 
> 	podman run --name clang-format -d \
> 		--mount type=bind,src=$PWD,dst=/src --workdir /src \
> 		docker.io/xianpengshen/clang-tools:22 \
> 		bash -c 'apt-get update -q && apt-get install -qy make git
> && tail -f /dev/null'
> 	podman logs clang-format -f
> 
> Once make and git are installed, just use podman exec:
> 
> 	podman exec -it clang-format make lint
> 	podman exec -it clang-format make format
> 
> --
> Robin
> 
> > Offer limited to residents of the contiguous United States.