[v1,06/23] benchtests: Use json-lib in bench-strspn.c

  Just QOL change to make parsing the output of the benchtests more
consistent.
---
 benchtests/bench-strspn.c | 78 +++++++++++++++++++++++++++++----------
 1 file changed, 58 insertions(+), 20 deletions(-)
  

On Wed, Mar 23, 2022 at 2:59 PM Noah Goldstein <goldstein.w.n@gmail.com> wrote:
>
> Just QOL change to make parsing the output of the benchtests more
> consistent.
> ---
>  benchtests/bench-strspn.c | 78 +++++++++++++++++++++++++++++----------
>  1 file changed, 58 insertions(+), 20 deletions(-)
>
> diff --git a/benchtests/bench-strspn.c b/benchtests/bench-strspn.c
> index d79c36fae6..061e90c54d 100644
> --- a/benchtests/bench-strspn.c
> +++ b/benchtests/bench-strspn.c
> @@ -23,6 +23,7 @@
>  # define TEST_NAME "wcsspn"
>  #endif /* WIDE */
>  #include "bench-string.h"
> +#include "json-lib.h"
>
>  #define BIG_CHAR MAX_CHAR
>
> @@ -58,9 +59,10 @@ SIMPLE_STRSPN (const CHAR *s, const CHAR *acc)
>  }
>
>  static void
> -do_one_test (impl_t *impl, const CHAR *s, const CHAR *acc, size_t exp_res)
> +do_one_test (json_ctx_t *json_ctx, impl_t *impl, const CHAR *s,
> +             const CHAR *acc, size_t exp_res)
>  {
> -  size_t res = CALL (impl, s, acc), i, iters = INNER_LOOP_ITERS_MEDIUM;
> +  size_t res = CALL (impl, s, acc), i, iters = INNER_LOOP_ITERS;
>    timing_t start, stop, cur;
>
>    if (res != exp_res)
> @@ -80,21 +82,24 @@ do_one_test (impl_t *impl, const CHAR *s, const CHAR *acc, size_t exp_res)
>
>    TIMING_DIFF (cur, start, stop);
>
> -  TIMING_PRINT_MEAN ((double) cur, (double) iters);
> +  json_element_double (json_ctx, (double)cur / (double)iters);
>  }
>
>  static void
> -do_test (size_t align, size_t pos, size_t len)
> +do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t pos,
> +         size_t len)
>  {
>    size_t i;
>    CHAR *acc, *s;
>
> -  align &= 7;
> -  if ((align + pos + 10) * sizeof (CHAR) >= page_size || len > 240 || ! len)
> +  align1 &= 7;
> +  if ((align1 + pos + 10) * sizeof (CHAR) >= page_size || len > 240 || !len)
> +    return;
> +  if ((align2 + len) * sizeof (CHAR) >= page_size)
>      return;
>
> -  acc = (CHAR *) (buf2) + (random () & 255);
> -  s = (CHAR *) (buf1) + align;
> +  acc = (CHAR *) (buf2) + align2;
> +  s = (CHAR *) (buf1) + align1;
>
>    for (i = 0; i < len; ++i)
>      {
> @@ -118,43 +123,76 @@ do_test (size_t align, size_t pos, size_t len)
>        s[i] = '\0';
>      }
>
> -  printf ("Length %4zd, alignment %2zd, acc len %2zd:", pos, align, len);
> +  json_element_object_begin (json_ctx);
> +  json_attr_uint (json_ctx, "len", len);
> +  json_attr_uint (json_ctx, "pos", pos);
> +  json_attr_uint (json_ctx, "align1", align1);
> +  json_attr_uint (json_ctx, "align2", align2);
> +  json_array_begin (json_ctx, "timings");
>
>    FOR_EACH_IMPL (impl, 0)
> -    do_one_test (impl, s, acc, pos);
> +    do_one_test (json_ctx, impl, s, acc, pos);
>
> -  putchar ('\n');
> +  json_array_end (json_ctx);
> +  json_element_object_end (json_ctx);
>  }
>
>  int
>  test_main (void)
>  {
> +  json_ctx_t json_ctx;
>    size_t i;
>
>    test_init ();
>
> -  printf ("%32s", "");
> +  json_init (&json_ctx, 0, stdout);
> +
> +  json_document_begin (&json_ctx);
> +  json_attr_string (&json_ctx, "timing_type", TIMING_TYPE);
> +
> +  json_attr_object_begin (&json_ctx, "functions");
> +  json_attr_object_begin (&json_ctx, TEST_NAME);
> +  json_attr_string (&json_ctx, "bench-variant", "");
> +
> +  json_array_begin (&json_ctx, "ifuncs");
>    FOR_EACH_IMPL (impl, 0)
> -    printf ("\t%s", impl->name);
> -  putchar ('\n');
> +    json_element_string (&json_ctx, impl->name);
> +  json_array_end (&json_ctx);
> +
> +  json_array_begin (&json_ctx, "results");
>
>    for (i = 0; i < 32; ++i)
>      {
> -      do_test (0, 512, i);
> -      do_test (i, 512, i);
> +      do_test (&json_ctx, 0, 0, 512, i);
> +      do_test (&json_ctx, i, 0, 512, i);
> +      do_test (&json_ctx, 0, i, 512, i);
> +      do_test (&json_ctx, i, i, 512, i);
>      }
>
>    for (i = 1; i < 8; ++i)
>      {
> -      do_test (0, 16 << i, 4);
> -      do_test (i, 16 << i, 4);
> +      do_test (&json_ctx, 0, 0, 16 << i, 4);
> +      do_test (&json_ctx, i, 0, 16 << i, 4);
> +      do_test (&json_ctx, 0, i, 16 << i, 4);
> +      do_test (&json_ctx, i, i, 16 << i, 4);
>      }
>
>    for (i = 1; i < 8; ++i)
> -    do_test (i, 64, 10);
> +    {
> +      do_test (&json_ctx, i, 0, 64, 10);
> +      do_test (&json_ctx, i, i, 64, 10);
> +    }
>
>    for (i = 0; i < 64; ++i)
> -    do_test (0, i, 6);
> +    {
> +      do_test (&json_ctx, 0, 0, i, 6);
> +      do_test (&json_ctx, 0, i, i, 6);
> +    }
> +
> +  json_array_end (&json_ctx);
> +  json_attr_object_end (&json_ctx);
> +  json_attr_object_end (&json_ctx);
> +  json_document_end (&json_ctx);
>
>    return ret;
>  }
> --
> 2.25.1
>

LGTM.

Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

Thanks.