[igt-dev] [PATCH i-g-t 13/21] gem_wsim: Compact int command parsing with a macro

[Chris Wilson]

Quoting Tvrtko Ursulin (2019-05-08 13:10:50)
> From: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> 
> Parsing an integer workload descriptor field is a common pattern which we
> can extract to a helper macro and by doing so further improve the
> readability of the main parsing loop.
> 
> Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin at intel.com>
> ---
>  benchmarks/gem_wsim.c | 80 ++++++++++++++-----------------------------
>  1 file changed, 25 insertions(+), 55 deletions(-)
> 
> diff --git a/benchmarks/gem_wsim.c b/benchmarks/gem_wsim.c
> index 4dbfc3e922a9..c2e13d9939c2 100644
> --- a/benchmarks/gem_wsim.c
> +++ b/benchmarks/gem_wsim.c
> @@ -370,6 +370,15 @@ static int parse_engine_map(struct w_step *step, const char *_str)
>         return 0;
>  }
>  
> +#define int_field(_STEP_, _FIELD_, _COND_, _ERR_) \
> +       if ((field = strtok_r(fstart, ".", &fctx))) { \
> +               tmp = atoi(field); \
> +               check_arg(_COND_, _ERR_, nr_steps); \
> +               step.type = _STEP_; \
> +               step._FIELD_ = tmp; \
> +               goto add_step; \
> +       } \

More hidden control flow :-p
Reviewed-by: Chris Wilson <chris at chris-wilson.co.uk>
-Chris