diff options
author | Will Newton <will.newton@linaro.org> | 2013-09-02 14:13:50 +0100 |
---|---|---|
committer | Will Newton <will.newton@linaro.org> | 2013-09-04 15:40:12 +0100 |
commit | 44558701ff93118de40d5d5484e210149570f951 (patch) | |
tree | 852abdc5179f2da33311bb53fbd226d88c086b56 /benchtests/bench-strcat.c | |
parent | cae16d66756dfb76b6b4c804e5eb1218d587c60f (diff) | |
download | glibc-44558701ff93118de40d5d5484e210149570f951.zip glibc-44558701ff93118de40d5d5484e210149570f951.tar.gz glibc-44558701ff93118de40d5d5484e210149570f951.tar.bz2 |
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-strcat.c')
-rw-r--r-- | benchtests/bench-strcat.c | 35 |
1 files changed, 14 insertions, 21 deletions
diff --git a/benchtests/bench-strcat.c b/benchtests/bench-strcat.c index b70a272..6602009 100644 --- a/benchtests/bench-strcat.c +++ b/benchtests/bench-strcat.c @@ -39,7 +39,9 @@ simple_strcat (char *dst, const char *src) static void do_one_test (impl_t *impl, char *dst, const char *src) { - 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) != dst) { error (0, 0, "Wrong result in function %s %p %p", impl->name, @@ -56,24 +58,17 @@ do_one_test (impl_t *impl, char *dst, const char *src) 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; - - for (i = 0; i < 32; ++i) - { - dst[k] = '\0'; - HP_TIMING_NOW (start); - CALL (impl, dst, src); - HP_TIMING_NOW (stop); - HP_TIMING_BEST (best_time, start, stop); - } - - printf ("\t%zd", (size_t) best_time); + dst[k] = '\0'; + CALL (impl, dst, src); } + TIMING_NOW (stop); + + TIMING_DIFF (cur, start, stop); + + TIMING_PRINT_MEAN ((double) cur, (double) iters); } static void @@ -100,8 +95,7 @@ do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char) 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:", len1, len2, align1, align2); + printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len1, len2, align1, align2); FOR_EACH_IMPL (impl, 0) { @@ -109,8 +103,7 @@ do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char) do_one_test (impl, s2, s1); } - if (HP_TIMING_AVAIL) - putchar ('\n'); + putchar ('\n'); } int |