mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-28 13:31:13 +00:00
5d765ada01
It shows both throughput (total bytes obtained in the test duration) and latecy for both arc4random and arc4random_buf with different sizes. Checked on x86_64-linux-gnu, aarch64-linux, and powerpc64le-linux-gnu.
144 lines
3.6 KiB
C
144 lines
3.6 KiB
C
/* Measure hash functions runtime.
|
|
Copyright (C) 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 TEST_FUNC
|
|
# error "No TEST_FUNC provided!"
|
|
#endif
|
|
#ifndef SIMPLE_TEST_FUNC
|
|
# error "No SIMPLE_TEST_FUNC provided!"
|
|
#endif
|
|
|
|
#ifndef TEST_NAME
|
|
# define STRINGIFY_PRIMITIVE(x) # x
|
|
# define STRINGIFY(x) STRINGIFY_PRIMITIVE (x)
|
|
|
|
# define TEST_NAME STRINGIFY (TEST_FUNC)
|
|
#endif
|
|
|
|
#include "json-lib.h"
|
|
#include "bench-timing.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
enum
|
|
{
|
|
NFIXED_ITERS = 1048576,
|
|
NRAND_BUFS = 16384,
|
|
NRAND_ITERS = 2048,
|
|
RAND_BENCH_MAX_LEN = 128
|
|
};
|
|
|
|
#include "bench-hash-funcs-kernel.h"
|
|
#define SIMPLE
|
|
#include "bench-hash-funcs-kernel.h"
|
|
|
|
static void
|
|
do_one_test (json_ctx_t *json_ctx, size_t len)
|
|
{
|
|
char buf[len + 1];
|
|
memset (buf, -1, len);
|
|
buf[len] = '\0';
|
|
|
|
json_element_object_begin (json_ctx);
|
|
|
|
json_attr_string (json_ctx, "type", "fixed");
|
|
json_attr_uint (json_ctx, "length", len);
|
|
json_attr_double (json_ctx, "time_simple", do_one_test_kernel_simple (buf, len));
|
|
json_attr_double (json_ctx, "time_optimized", do_one_test_kernel_optimized (buf, len));
|
|
|
|
json_element_object_end (json_ctx);
|
|
}
|
|
|
|
static void __attribute__ ((noinline, noclone))
|
|
do_rand_test (json_ctx_t *json_ctx)
|
|
{
|
|
size_t i, sz, offset;
|
|
char *bufs;
|
|
unsigned int *sizes;
|
|
|
|
bufs = (char *) calloc (NRAND_BUFS, RAND_BENCH_MAX_LEN);
|
|
sizes = (unsigned int *) calloc (NRAND_BUFS, sizeof (unsigned int));
|
|
if (bufs == NULL || sizes == NULL)
|
|
{
|
|
fprintf (stderr, "Failed to allocate bufs for random test\n");
|
|
goto done;
|
|
}
|
|
|
|
for (sz = 2; sz <= RAND_BENCH_MAX_LEN; sz += sz)
|
|
{
|
|
json_element_object_begin (json_ctx);
|
|
json_attr_string (json_ctx, "type", "random");
|
|
json_attr_uint (json_ctx, "length", sz);
|
|
|
|
for (i = 0, offset = 0; i < NRAND_BUFS;
|
|
++i, offset += RAND_BENCH_MAX_LEN)
|
|
{
|
|
sizes[i] = random () % sz;
|
|
memset (bufs + offset, -1, sizes[i]);
|
|
bufs[offset + sizes[i]] = '\0';
|
|
}
|
|
|
|
json_attr_double (json_ctx, "time_simple",
|
|
do_rand_test_kernel_simple (bufs, sizes));
|
|
json_attr_double (json_ctx, "time_optimized",
|
|
do_rand_test_kernel_optimized (bufs, sizes));
|
|
json_element_object_end (json_ctx);
|
|
}
|
|
|
|
done:
|
|
if (bufs)
|
|
free (bufs);
|
|
|
|
if (sizes)
|
|
free (sizes);
|
|
}
|
|
|
|
static int
|
|
do_test (void)
|
|
{
|
|
int i;
|
|
json_ctx_t json_ctx;
|
|
|
|
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_array_begin (&json_ctx, "results");
|
|
|
|
for (i = 0; i < 16; ++i)
|
|
do_one_test (&json_ctx, i);
|
|
|
|
for (i = 16; i <= 256; i += i)
|
|
do_one_test (&json_ctx, i);
|
|
|
|
do_rand_test (&json_ctx);
|
|
|
|
json_array_end (&json_ctx);
|
|
json_attr_object_end (&json_ctx);
|
|
json_attr_object_end (&json_ctx);
|
|
json_document_end (&json_ctx);
|
|
|
|
return 0;
|
|
}
|
|
|
|
#include <support/test-driver.c>
|