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/* Measure strcpy functions.
Copyright (C) 2013-2022 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
<https://www.gnu.org/licenses/>. */
#define BIG_CHAR MAX_CHAR
#ifdef WIDE
# define sfmt "ls"
# define SMALL_CHAR 1273
#else
# define sfmt "s"
# define SMALL_CHAR 127
#endif
#include "json-lib.h"
#ifndef STRCPY_RESULT
# define STRCPY_RESULT(dst, len) dst
# define TEST_MAIN
# ifndef WIDE
# define TEST_NAME "strcpy"
# else
# define TEST_NAME "wcscpy"
# define generic_strcpy generic_wcscpy
# endif
# include "bench-string.h"
CHAR *
generic_strcpy (CHAR *dst, const CHAR *src)
{
return MEMCPY (dst, src, STRLEN (src) + 1);
}
IMPL (STRCPY, 1)
IMPL (generic_strcpy, 0)
#endif
typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
static void
do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *dst, const CHAR *src,
size_t len __attribute__ ((unused)))
{
size_t i, iters = INNER_LOOP_ITERS;
timing_t start, stop, cur;
if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
{
error (0, 0, "Wrong result in function %s %p %p", impl->name,
CALL (impl, dst, src), STRCPY_RESULT (dst, len));
ret = 1;
return;
}
if (STRCMP (dst, 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)
{
CALL (impl, dst, src);
}
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)
{
size_t i;
CHAR *s1, *s2;
/* For wcscpy: align1 and align2 here mean alignment not in bytes,
but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
len for wcschr here isn't in bytes but it's number of wchar_t symbols. */
align1 &= 7;
if ((align1 + len) * sizeof (CHAR) >= page_size)
return;
align2 &= 7;
if ((align2 + len) * sizeof (CHAR) >= page_size)
return;
s1 = (CHAR *) (buf1) + align1;
s2 = (CHAR *) (buf2) + align2;
for (i = 0; i < len; i++)
s1[i] = 32 + 23 * i % (max_char - 32);
s1[len] = 0;
json_element_object_begin (json_ctx);
json_attr_uint (json_ctx, "align1", align1);
json_attr_uint (json_ctx, "align2", align2);
json_attr_uint (json_ctx, "len", len);
json_attr_uint (json_ctx, "max_char", max_char);
json_array_begin (json_ctx, "timings");
FOR_EACH_IMPL (impl, 0)
do_one_test (json_ctx, impl, s2, s1, len);
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", "");
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 = 0; i < 16; ++i)
{
do_test (&json_ctx, 0, 0, i, SMALL_CHAR);
do_test (&json_ctx, 0, 0, i, BIG_CHAR);
do_test (&json_ctx, 0, i, i, SMALL_CHAR);
do_test (&json_ctx, i, 0, i, BIG_CHAR);
}
for (i = 1; i < 8; ++i)
{
do_test (&json_ctx, 0, 0, 8 << i, SMALL_CHAR);
do_test (&json_ctx, 8 - i, 2 * i, 8 << i, SMALL_CHAR);
}
for (i = 1; i < 8; ++i)
{
do_test (&json_ctx, i, 2 * i, 8 << i, SMALL_CHAR);
do_test (&json_ctx, 2 * i, i, 8 << i, BIG_CHAR);
do_test (&json_ctx, i, i, 8 << i, SMALL_CHAR);
do_test (&json_ctx, i, i, 8 << i, BIG_CHAR);
}
for (i = 16; i <= 512; i += 4)
{
do_test (&json_ctx, 0, 4, i, SMALL_CHAR);
do_test (&json_ctx, 4, 0, i, BIG_CHAR);
do_test (&json_ctx, 4, 4, i, SMALL_CHAR);
do_test (&json_ctx, 2, 2, i, BIG_CHAR);
do_test (&json_ctx, 2, 6, i, SMALL_CHAR);
do_test (&json_ctx, 6, 2, i, BIG_CHAR);
do_test (&json_ctx, 1, 7, i, SMALL_CHAR);
do_test (&json_ctx, 7, 1, i, BIG_CHAR);
do_test (&json_ctx, 3, 4, i, SMALL_CHAR);
do_test (&json_ctx, 4, 3, i, BIG_CHAR);
do_test (&json_ctx, 5, 7, i, SMALL_CHAR);
do_test (&json_ctx, 7, 5, i, SMALL_CHAR);
}
for (i = 1; i < 2048; i += i)
{
do_test (&json_ctx, 1, 0, i, SMALL_CHAR);
do_test (&json_ctx, 0, i, i, SMALL_CHAR);
do_test (&json_ctx, 0, 0, i, SMALL_CHAR);
do_test (&json_ctx, i, i, i, SMALL_CHAR);
}
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>
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