159 lines
3.9 KiB
C
159 lines
3.9 KiB
C
/* Measure memset 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 TEST_MAIN
|
|
#ifndef WIDE
|
|
# define TEST_NAME "memset"
|
|
#else
|
|
# define TEST_NAME "wmemset"
|
|
# define generic_memset generic_wmemset
|
|
#endif /* WIDE */
|
|
#define MIN_PAGE_SIZE 131072
|
|
#include "bench-string.h"
|
|
|
|
#include "json-lib.h"
|
|
|
|
#ifdef WIDE
|
|
CHAR *generic_wmemset (CHAR *, CHAR, size_t);
|
|
#else
|
|
void *generic_memset (void *, int, size_t);
|
|
#endif
|
|
|
|
typedef void *(*proto_t) (void *, int, size_t);
|
|
|
|
IMPL (MEMSET, 1)
|
|
IMPL (generic_memset, 0)
|
|
|
|
static void
|
|
do_one_test (json_ctx_t *json_ctx, impl_t *impl, CHAR *s,
|
|
int c __attribute ((unused)), size_t n)
|
|
{
|
|
size_t i, iters = INNER_LOOP_ITERS_LARGE;
|
|
timing_t start, stop, cur;
|
|
|
|
TIMING_NOW (start);
|
|
for (i = 0; i < iters; ++i)
|
|
{
|
|
CALL (impl, s, c, n);
|
|
}
|
|
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 align, int c, size_t len)
|
|
{
|
|
align &= 4095;
|
|
if ((align + len) * sizeof (CHAR) > page_size)
|
|
return;
|
|
|
|
json_element_object_begin (json_ctx);
|
|
json_attr_uint (json_ctx, "length", len);
|
|
json_attr_uint (json_ctx, "alignment", align);
|
|
json_attr_int (json_ctx, "char", c);
|
|
json_array_begin (json_ctx, "timings");
|
|
|
|
FOR_EACH_IMPL (impl, 0)
|
|
{
|
|
do_one_test (json_ctx, impl, (CHAR *) (buf1) + align, c, len);
|
|
alloc_bufs ();
|
|
}
|
|
|
|
json_array_end (json_ctx);
|
|
json_element_object_end (json_ctx);
|
|
}
|
|
|
|
int
|
|
test_main (void)
|
|
{
|
|
json_ctx_t json_ctx;
|
|
size_t i;
|
|
int c = 0;
|
|
|
|
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 (c = -65; c <= 130; c += 65)
|
|
{
|
|
for (i = 0; i < 18; ++i)
|
|
do_test (&json_ctx, 0, c, 1 << i);
|
|
for (i = 1; i < 64; ++i)
|
|
{
|
|
do_test (&json_ctx, i, c, i);
|
|
do_test (&json_ctx, 4096 - i, c, i);
|
|
do_test (&json_ctx, 4095, c, i);
|
|
if (i & (i - 1))
|
|
do_test (&json_ctx, 0, c, i);
|
|
}
|
|
for (i = 32; i < 1024; i+=32)
|
|
{
|
|
do_test (&json_ctx, 0, c, i);
|
|
do_test (&json_ctx, i, c, i);
|
|
}
|
|
do_test (&json_ctx, 1, c, 14);
|
|
do_test (&json_ctx, 3, c, 1024);
|
|
do_test (&json_ctx, 4, c, 64);
|
|
do_test (&json_ctx, 2, c, 25);
|
|
}
|
|
for (i = 33; i <= 256; i += 4)
|
|
{
|
|
do_test (&json_ctx, 0, c, 32 * i);
|
|
do_test (&json_ctx, i, c, 32 * i);
|
|
}
|
|
|
|
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>
|
|
|
|
#define libc_hidden_builtin_def(X)
|
|
#define libc_hidden_def(X)
|
|
#define libc_hidden_weak(X)
|
|
#define weak_alias(X,Y)
|
|
#ifndef WIDE
|
|
# undef MEMSET
|
|
# define MEMSET generic_memset
|
|
# include <string/memset.c>
|
|
#else
|
|
# define WMEMSET generic_wmemset
|
|
# include <wcsmbs/wmemset.c>
|
|
#endif
|