mirror of
https://sourceware.org/git/glibc.git
synced 2025-10-30 10:45:40 +03:00
688903eb3e
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
266 lines
6.7 KiB
C
266 lines
6.7 KiB
C
/* Measure strcmp and wcscmp functions.
|
|
Copyright (C) 2013-2018 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
|
|
#ifdef WIDE
|
|
# define TEST_NAME "wcscmp"
|
|
#else
|
|
# define TEST_NAME "strcmp"
|
|
#endif
|
|
#include "bench-string.h"
|
|
|
|
#ifdef WIDE
|
|
# include <wchar.h>
|
|
|
|
# define L(str) L##str
|
|
# define STRCMP wcscmp
|
|
# define STRCPY wcscpy
|
|
# define STRLEN wcslen
|
|
# define MEMCPY wmemcpy
|
|
# define SIMPLE_STRCMP simple_wcscmp
|
|
# define STUPID_STRCMP stupid_wcscmp
|
|
# define CHAR wchar_t
|
|
# define UCHAR wchar_t
|
|
# define CHARBYTES 4
|
|
# define CHARBYTESLOG 2
|
|
# define CHARALIGN __alignof__ (CHAR)
|
|
# define MIDCHAR 0x7fffffff
|
|
# define LARGECHAR 0xfffffffe
|
|
# define CHAR__MAX WCHAR_MAX
|
|
# define CHAR__MIN WCHAR_MIN
|
|
|
|
/* Wcscmp uses signed semantics for comparison, not unsigned */
|
|
/* Avoid using substraction since possible overflow */
|
|
|
|
int
|
|
simple_wcscmp (const wchar_t *s1, const wchar_t *s2)
|
|
{
|
|
wchar_t c1, c2;
|
|
do
|
|
{
|
|
c1 = *s1++;
|
|
c2 = *s2++;
|
|
if (c2 == L'\0')
|
|
return c1 - c2;
|
|
}
|
|
while (c1 == c2);
|
|
|
|
return c1 < c2 ? -1 : 1;
|
|
}
|
|
|
|
int
|
|
stupid_wcscmp (const wchar_t *s1, const wchar_t *s2)
|
|
{
|
|
size_t ns1 = wcslen (s1) + 1;
|
|
size_t ns2 = wcslen (s2) + 1;
|
|
size_t n = ns1 < ns2 ? ns1 : ns2;
|
|
int ret = 0;
|
|
|
|
wchar_t c1, c2;
|
|
|
|
while (n--) {
|
|
c1 = *s1++;
|
|
c2 = *s2++;
|
|
if ((ret = c1 < c2 ? -1 : c1 == c2 ? 0 : 1) != 0)
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
#else
|
|
# include <limits.h>
|
|
|
|
# define L(str) str
|
|
# define STRCMP strcmp
|
|
# define STRCPY strcpy
|
|
# define STRLEN strlen
|
|
# define MEMCPY memcpy
|
|
# define SIMPLE_STRCMP simple_strcmp
|
|
# define STUPID_STRCMP stupid_strcmp
|
|
# define CHAR char
|
|
# define UCHAR unsigned char
|
|
# define CHARBYTES 1
|
|
# define CHARBYTESLOG 0
|
|
# define CHARALIGN 1
|
|
# define MIDCHAR 0x7f
|
|
# define LARGECHAR 0xfe
|
|
# define CHAR__MAX CHAR_MAX
|
|
# define CHAR__MIN CHAR_MIN
|
|
|
|
/* Strcmp uses unsigned semantics for comparison. */
|
|
int
|
|
simple_strcmp (const char *s1, const char *s2)
|
|
{
|
|
int ret;
|
|
|
|
while ((ret = *(unsigned char *) s1 - *(unsigned char*) s2++) == 0 && *s1++);
|
|
return ret;
|
|
}
|
|
|
|
int
|
|
stupid_strcmp (const char *s1, const char *s2)
|
|
{
|
|
size_t ns1 = strlen (s1) + 1;
|
|
size_t ns2 = strlen (s2) + 1;
|
|
size_t n = ns1 < ns2 ? ns1 : ns2;
|
|
int ret = 0;
|
|
|
|
while (n--)
|
|
if ((ret = *(unsigned char *) s1++ - *(unsigned char *) s2++) != 0)
|
|
break;
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
# include "json-lib.h"
|
|
|
|
typedef int (*proto_t) (const CHAR *, const CHAR *);
|
|
|
|
IMPL (STUPID_STRCMP, 1)
|
|
IMPL (SIMPLE_STRCMP, 1)
|
|
IMPL (STRCMP, 1)
|
|
|
|
static void
|
|
do_one_test (json_ctx_t *json_ctx, impl_t *impl,
|
|
const CHAR *s1, const CHAR *s2,
|
|
int exp_result)
|
|
{
|
|
size_t i, iters = INNER_LOOP_ITERS;
|
|
timing_t start, stop, cur;
|
|
|
|
TIMING_NOW (start);
|
|
for (i = 0; i < iters; ++i)
|
|
{
|
|
CALL (impl, s1, s2);
|
|
}
|
|
TIMING_NOW (stop);
|
|
|
|
TIMING_DIFF (cur, start, stop);
|
|
|
|
json_element_double (json_ctx, (double) cur / (double) iters);
|
|
}
|
|
|
|
static void
|
|
do_test (json_ctx_t *json_ctx, size_t align1, size_t align2, size_t len, int
|
|
max_char, int exp_result)
|
|
{
|
|
size_t i;
|
|
|
|
CHAR *s1, *s2;
|
|
|
|
if (len == 0)
|
|
return;
|
|
|
|
align1 &= 63;
|
|
if (align1 + (len + 1) * CHARBYTES >= page_size)
|
|
return;
|
|
|
|
align2 &= 63;
|
|
if (align2 + (len + 1) * CHARBYTES >= page_size)
|
|
return;
|
|
|
|
/* Put them close to the end of page. */
|
|
i = align1 + CHARBYTES * (len + 2);
|
|
s1 = (CHAR *) (buf1 + ((page_size - i) / 16 * 16) + align1);
|
|
i = align2 + CHARBYTES * (len + 2);
|
|
s2 = (CHAR *) (buf2 + ((page_size - i) / 16 * 16) + align2);
|
|
|
|
for (i = 0; i < len; i++)
|
|
s1[i] = s2[i] = 1 + (23 << ((CHARBYTES - 1) * 8)) * i % max_char;
|
|
|
|
s1[len] = s2[len] = 0;
|
|
s1[len + 1] = 23;
|
|
s2[len + 1] = 24 + exp_result;
|
|
s2[len - 1] -= exp_result;
|
|
|
|
json_element_object_begin (json_ctx);
|
|
json_attr_uint (json_ctx, "length", (double) len);
|
|
json_attr_uint (json_ctx, "align1", (double) align1);
|
|
json_attr_uint (json_ctx, "align2", (double) align2);
|
|
json_array_begin (json_ctx, "timings");
|
|
|
|
FOR_EACH_IMPL (impl, 0)
|
|
do_one_test (json_ctx, impl, s1, s2, exp_result);
|
|
|
|
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 ();
|
|
|
|
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", "default");
|
|
|
|
json_array_begin (&json_ctx, "ifuncs");
|
|
FOR_EACH_IMPL (impl, 0)
|
|
json_element_string (&json_ctx, impl->name);
|
|
json_array_end (&json_ctx);
|
|
|
|
json_array_begin (&json_ctx, "results");
|
|
|
|
for (i = 1; i < 32; ++i)
|
|
{
|
|
do_test (&json_ctx, CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 0);
|
|
do_test (&json_ctx, CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, 1);
|
|
do_test (&json_ctx, CHARBYTES * i, CHARBYTES * i, i, MIDCHAR, -1);
|
|
}
|
|
|
|
for (i = 1; i < 10 + CHARBYTESLOG; ++i)
|
|
{
|
|
do_test (&json_ctx, 0, 0, 2 << i, MIDCHAR, 0);
|
|
do_test (&json_ctx, 0, 0, 2 << i, LARGECHAR, 0);
|
|
do_test (&json_ctx, 0, 0, 2 << i, MIDCHAR, 1);
|
|
do_test (&json_ctx, 0, 0, 2 << i, LARGECHAR, 1);
|
|
do_test (&json_ctx, 0, 0, 2 << i, MIDCHAR, -1);
|
|
do_test (&json_ctx, 0, 0, 2 << i, LARGECHAR, -1);
|
|
do_test (&json_ctx, 0, CHARBYTES * i, 2 << i, MIDCHAR, 1);
|
|
do_test (&json_ctx, CHARBYTES * i, CHARBYTES * (i + 1), 2 << i, LARGECHAR, 1);
|
|
}
|
|
|
|
for (i = 1; i < 8; ++i)
|
|
{
|
|
do_test (&json_ctx, CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, 0);
|
|
do_test (&json_ctx, 2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, 0);
|
|
do_test (&json_ctx, CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, 1);
|
|
do_test (&json_ctx, 2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, 1);
|
|
do_test (&json_ctx, CHARBYTES * i, 2 * CHARBYTES * i, 8 << i, MIDCHAR, -1);
|
|
do_test (&json_ctx, 2 * CHARBYTES * i, CHARBYTES * i, 8 << i, LARGECHAR, -1);
|
|
}
|
|
|
|
json_array_end (&json_ctx);
|
|
json_attr_object_end (&json_ctx);
|
|
json_attr_object_end (&json_ctx);
|
|
json_document_end (&json_ctx);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|