mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-23 11:20:07 +00:00
154 lines
3.4 KiB
C
154 lines
3.4 KiB
C
/* Measure strlen functions.
|
|
Copyright (C) 2013-2017 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 "strnlen"
|
|
#else
|
|
# define TEST_NAME "wcsnlen"
|
|
#endif /* WIDE */
|
|
#include "bench-string.h"
|
|
|
|
#ifndef WIDE
|
|
# define STRNLEN strnlen
|
|
# define CHAR char
|
|
# define BIG_CHAR CHAR_MAX
|
|
# define MIDDLE_CHAR 127
|
|
# define SIMPLE_STRNLEN simple_strnlen
|
|
#else
|
|
# include <wchar.h>
|
|
# define STRNLEN wcsnlen
|
|
# define CHAR wchar_t
|
|
# define BIG_CHAR WCHAR_MAX
|
|
# define MIDDLE_CHAR 1121
|
|
# define SIMPLE_STRNLEN simple_wcsnlen
|
|
#endif /* WIDE */
|
|
|
|
typedef size_t (*proto_t) (const CHAR *, size_t);
|
|
size_t SIMPLE_STRNLEN (const CHAR *, size_t);
|
|
|
|
IMPL (SIMPLE_STRNLEN, 0)
|
|
IMPL (STRNLEN, 1)
|
|
|
|
size_t
|
|
SIMPLE_STRNLEN (const CHAR *s, size_t maxlen)
|
|
{
|
|
size_t i;
|
|
|
|
for (i = 0; i < maxlen && s[i]; ++i);
|
|
return i;
|
|
}
|
|
|
|
static void
|
|
do_one_test (impl_t *impl, const CHAR *s, size_t maxlen, size_t exp_len)
|
|
{
|
|
size_t len = CALL (impl, s, maxlen), i, iters = INNER_LOOP_ITERS;
|
|
timing_t start, stop, cur;
|
|
|
|
if (len != exp_len)
|
|
{
|
|
error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
|
|
len, exp_len);
|
|
ret = 1;
|
|
return;
|
|
}
|
|
|
|
TIMING_NOW (start);
|
|
for (i = 0; i < iters; ++i)
|
|
{
|
|
CALL (impl, s, maxlen);
|
|
}
|
|
TIMING_NOW (stop);
|
|
|
|
TIMING_DIFF (cur, start, stop);
|
|
|
|
TIMING_PRINT_MEAN ((double) cur, (double) iters);
|
|
}
|
|
|
|
static void
|
|
do_test (size_t align, size_t len, size_t maxlen, int max_char)
|
|
{
|
|
size_t i;
|
|
|
|
align &= 63;
|
|
if ((align + len) * sizeof (CHAR) >= page_size)
|
|
return;
|
|
|
|
CHAR *buf = (CHAR *) (buf1);
|
|
|
|
for (i = 0; i < len; ++i)
|
|
buf[align + i] = 1 + 7 * i % max_char;
|
|
buf[align + len] = 0;
|
|
|
|
printf ("Length %4zd, alignment %2zd:", len, align);
|
|
|
|
FOR_EACH_IMPL (impl, 0)
|
|
do_one_test (impl, (CHAR *) (buf + align), maxlen, MIN (len, maxlen));
|
|
|
|
putchar ('\n');
|
|
}
|
|
|
|
int
|
|
test_main (void)
|
|
{
|
|
size_t i;
|
|
|
|
test_init ();
|
|
|
|
printf ("%20s", "");
|
|
FOR_EACH_IMPL (impl, 0)
|
|
printf ("\t%s", impl->name);
|
|
putchar ('\n');
|
|
|
|
for (i = 1; i < 8; ++i)
|
|
{
|
|
do_test (0, i, i - 1, MIDDLE_CHAR);
|
|
do_test (0, i, i, MIDDLE_CHAR);
|
|
do_test (0, i, i + 1, MIDDLE_CHAR);
|
|
}
|
|
|
|
for (i = 1; i < 8; ++i)
|
|
{
|
|
do_test (i, i, i - 1, MIDDLE_CHAR);
|
|
do_test (i, i, i, MIDDLE_CHAR);
|
|
do_test (i, i, i + 1, MIDDLE_CHAR);
|
|
}
|
|
|
|
for (i = 2; i <= 10; ++i)
|
|
{
|
|
do_test (0, 1 << i, 5000, MIDDLE_CHAR);
|
|
do_test (1, 1 << i, 5000, MIDDLE_CHAR);
|
|
}
|
|
|
|
for (i = 1; i < 8; ++i)
|
|
do_test (0, i, 5000, BIG_CHAR);
|
|
|
|
for (i = 1; i < 8; ++i)
|
|
do_test (i, i, 5000, BIG_CHAR);
|
|
|
|
for (i = 2; i <= 10; ++i)
|
|
{
|
|
do_test (0, 1 << i, 5000, BIG_CHAR);
|
|
do_test (1, 1 << i, 5000, BIG_CHAR);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|