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authorWill Newton <will.newton@linaro.org>2013-09-02 14:13:50 +0100
committerWill Newton <will.newton@linaro.org>2013-09-04 15:40:12 +0100
commit44558701ff93118de40d5d5484e210149570f951 (patch)
tree852abdc5179f2da33311bb53fbd226d88c086b56 /benchtests/bench-strncat.c
parentcae16d66756dfb76b6b4c804e5eb1218d587c60f (diff)
downloadglibc-44558701ff93118de40d5d5484e210149570f951.tar.gz
benchtests: Switch string benchmarks to use bench-timing.h.
Switch the string benchmarks to using bench-timing.h instead of hp-timing.h directly. This allows the string benchmarks to be run usefully on architectures such as ARM that do not have support for hp-timing.h. In order to do this the tests have been changed from timing each individual call and picking the lowest execution time recorded to timing a number of calls and taking the mean execution time. ChangeLog: 2013-09-04 Will Newton <will.newton@linaro.org> * benchtests/bench-timing.h (TIMING_PRINT_MEAN): New macro. * benchtests/bench-string.h: Include bench-timing.h instead of including hp-timing.h directly. (INNER_LOOP_ITERS): New define. (HP_TIMING_BEST): Delete macro. (test_init): Remove call to HP_TIMING_DIFF_INIT. * benchtests/bench-memccpy.c: Use bench-timing.h macros instead of hp-timing.h macros. * benchtests/bench-memchr.c: Likewise. * benchtests/bench-memcmp.c: Likewise. * benchtests/bench-memcpy.c: Likewise. * benchtests/bench-memmem.c: Likewise. * benchtests/bench-memmove.c: Likewise. * benchtests/bench-memset.c: Likewise. * benchtests/bench-rawmemchr.c: Likewise. * benchtests/bench-strcasecmp.c: Likewise. * benchtests/bench-strcasestr.c: Likewise. * benchtests/bench-strcat.c: Likewise. * benchtests/bench-strchr.c: Likewise. * benchtests/bench-strcmp.c: Likewise. * benchtests/bench-strcpy.c: Likewise. * benchtests/bench-strcpy_chk.c: Likewise. * benchtests/bench-strlen.c: Likewise. * benchtests/bench-strncasecmp.c: Likewise. * benchtests/bench-strncat.c: Likewise. * benchtests/bench-strncmp.c: Likewise. * benchtests/bench-strncpy.c: Likewise. * benchtests/bench-strnlen.c: Likewise. * benchtests/bench-strpbrk.c: Likewise. * benchtests/bench-strrchr.c: Likewise. * benchtests/bench-strspn.c: Likewise. * benchtests/bench-strstr.c: Likewise.
Diffstat (limited to 'benchtests/bench-strncat.c')
-rw-r--r--benchtests/bench-strncat.c36
1 files changed, 15 insertions, 21 deletions
diff --git a/benchtests/bench-strncat.c b/benchtests/bench-strncat.c
index 904daa7b7e..2a17817590 100644
--- a/benchtests/bench-strncat.c
+++ b/benchtests/bench-strncat.c
@@ -43,7 +43,9 @@ stupid_strncat (char *dst, const char *src, size_t n)
static void
do_one_test (impl_t *impl, char *dst, const char *src, size_t n)
{
- size_t k = strlen (dst);
+ size_t k = strlen (dst), i, iters = INNER_LOOP_ITERS;
+ timing_t start, stop, cur;
+
if (CALL (impl, dst, src, n) != dst)
{
error (0, 0, "Wrong result in function %s %p != %p", impl->name,
@@ -67,24 +69,18 @@ do_one_test (impl_t *impl, char *dst, const char *src, size_t n)
ret = 1;
return;
}
- if (HP_TIMING_AVAIL)
+
+ TIMING_NOW (start);
+ for (i = 0; i < iters; ++i)
{
- hp_timing_t start __attribute ((unused));
- hp_timing_t stop __attribute ((unused));
- hp_timing_t best_time = ~ (hp_timing_t) 0;
- size_t i;
+ dst[k] = '\0';
+ CALL (impl, dst, src, n);
+ }
+ TIMING_NOW (stop);
- for (i = 0; i < 32; ++i)
- {
- dst[k] = '\0';
- HP_TIMING_NOW (start);
- CALL (impl, dst, src, n);
- HP_TIMING_NOW (stop);
- HP_TIMING_BEST (best_time, start, stop);
- }
+ TIMING_DIFF (cur, start, stop);
- printf ("\t%zd", (size_t) best_time);
- }
+ TIMING_PRINT_MEAN ((double) cur, (double) iters);
}
static void
@@ -114,9 +110,8 @@ do_test (size_t align1, size_t align2, size_t len1, size_t len2,
for (i = 0; i < len2; i++)
s2[i] = 32 + 23 * i % (max_char - 32);
- if (HP_TIMING_AVAIL)
- printf ("Length %4zd/%4zd, alignment %2zd/%2zd, N %4zd:",
- len1, len2, align1, align2, n);
+ printf ("Length %4zd/%4zd, alignment %2zd/%2zd, N %4zd:",
+ len1, len2, align1, align2, n);
FOR_EACH_IMPL (impl, 0)
{
@@ -124,8 +119,7 @@ do_test (size_t align1, size_t align2, size_t len1, size_t len2,
do_one_test (impl, s2, s1, n);
}
- if (HP_TIMING_AVAIL)
- putchar ('\n');
+ putchar ('\n');
}
int