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glibc/benchtests/bench-strcat.c
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/* Measure strcat functions. | |
Copyright (C) 2013-2016 Free Software Foundation, Inc. | |
This file is part of the GNU C Library. | |
The GNU C Library is free software; you can redistribute it and/or | |
modify it under the terms of the GNU Lesser General Public | |
License as published by the Free Software Foundation; either | |
version 2.1 of the License, or (at your option) any later version. | |
The GNU C Library is distributed in the hope that it will be useful, | |
but WITHOUT ANY WARRANTY; without even the implied warranty of | |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
Lesser General Public License for more details. | |
You should have received a copy of the GNU Lesser General Public | |
License along with the GNU C Library; if not, see | |
<http://www.gnu.org/licenses/>. */ | |
#define TEST_MAIN | |
#ifndef WIDE | |
# define TEST_NAME "strcat" | |
#else | |
# define TEST_NAME "wcscat" | |
#endif /* WIDE */ | |
#include "bench-string.h" | |
#ifndef WIDE | |
# define STRCAT strcat | |
# define CHAR char | |
# define sfmt "s" | |
# define SIMPLE_STRCAT simple_strcat | |
# define STRLEN strlen | |
# define STRCMP strcmp | |
# define BIG_CHAR CHAR_MAX | |
# define SMALL_CHAR 127 | |
#else | |
# include <wchar.h> | |
# define STRCAT wcscat | |
# define CHAR wchar_t | |
# define sfmt "ls" | |
# define SIMPLE_STRCAT simple_wcscat | |
# define STRLEN wcslen | |
# define STRCMP wcscmp | |
# define BIG_CHAR WCHAR_MAX | |
# define SMALL_CHAR 1273 | |
#endif /* WIDE */ | |
typedef CHAR *(*proto_t) (CHAR *, const CHAR *); | |
CHAR *SIMPLE_STRCAT (CHAR *, const CHAR *); | |
IMPL (SIMPLE_STRCAT, 0) | |
IMPL (STRCAT, 1) | |
CHAR * | |
SIMPLE_STRCAT (CHAR *dst, const CHAR *src) | |
{ | |
CHAR *ret = dst; | |
while (*dst++ != '\0'); | |
--dst; | |
while ((*dst++ = *src++) != '\0'); | |
return ret; | |
} | |
static void | |
do_one_test (impl_t *impl, CHAR *dst, const CHAR *src) | |
{ | |
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, | |
CALL (impl, dst, src), dst); | |
ret = 1; | |
return; | |
} | |
if (STRCMP (dst + k, src) != 0) | |
{ | |
error (0, 0, "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"", | |
impl->name, dst, src); | |
ret = 1; | |
return; | |
} | |
TIMING_NOW (start); | |
for (i = 0; i < iters; ++i) | |
{ | |
dst[k] = '\0'; | |
CALL (impl, dst, src); | |
} | |
TIMING_NOW (stop); | |
TIMING_DIFF (cur, start, stop); | |
TIMING_PRINT_MEAN ((double) cur, (double) iters); | |
} | |
static void | |
do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char) | |
{ | |
size_t i; | |
CHAR *s1, *s2; | |
align1 &= 7; | |
if ((align1 + len1) * sizeof (CHAR) >= page_size) | |
return; | |
align2 &= 7; | |
if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size) | |
return; | |
s1 = (CHAR *) (buf1) + align1; | |
s2 = (CHAR *) (buf2) + align2; | |
for (i = 0; i < len1; ++i) | |
s1[i] = 32 + 23 * i % (max_char - 32); | |
s1[len1] = '\0'; | |
for (i = 0; i < len2; i++) | |
s2[i] = 32 + 23 * i % (max_char - 32); | |
printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len1, len2, align1, align2); | |
FOR_EACH_IMPL (impl, 0) | |
{ | |
s2[len2] = '\0'; | |
do_one_test (impl, s2, s1); | |
} | |
putchar ('\n'); | |
} | |
int | |
test_main (void) | |
{ | |
size_t i; | |
test_init (); | |
printf ("%28s", ""); | |
FOR_EACH_IMPL (impl, 0) | |
printf ("\t%s", impl->name); | |
putchar ('\n'); | |
for (i = 0; i < 16; ++i) | |
{ | |
do_test (0, 0, i, i, SMALL_CHAR); | |
do_test (0, 0, i, i, BIG_CHAR); | |
do_test (0, i, i, i, SMALL_CHAR); | |
do_test (i, 0, i, i, BIG_CHAR); | |
} | |
for (i = 1; i < 8; ++i) | |
{ | |
do_test (0, 0, 8 << i, 8 << i, SMALL_CHAR); | |
do_test (8 - i, 2 * i, 8 << i, 8 << i, SMALL_CHAR); | |
do_test (0, 0, 8 << i, 2 << i, SMALL_CHAR); | |
do_test (8 - i, 2 * i, 8 << i, 2 << i, SMALL_CHAR); | |
} | |
for (i = 1; i < 8; ++i) | |
{ | |
do_test (i, 2 * i, 8 << i, 1, SMALL_CHAR); | |
do_test (2 * i, i, 8 << i, 1, BIG_CHAR); | |
do_test (i, i, 8 << i, 10, SMALL_CHAR); | |
do_test (i, i, 8 << i, 10, BIG_CHAR); | |
} | |
return ret; | |
} | |
#include "../test-skeleton.c" |