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glibc/benchtests/bench-strcpy.c
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/* Measure strcpy functions. | |
Copyright (C) 2013-2016 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/>. */ | |
#ifdef WIDE | |
# include <wchar.h> | |
# define CHAR wchar_t | |
# define UCHAR wchar_t | |
# define sfmt "ls" | |
# define BIG_CHAR WCHAR_MAX | |
# define SMALL_CHAR 1273 | |
# define STRCMP wcscmp | |
# define MEMCMP wmemcmp | |
# define MEMSET wmemset | |
#else | |
# define CHAR char | |
# define UCHAR unsigned char | |
# define sfmt "s" | |
# define BIG_CHAR CHAR_MAX | |
# define SMALL_CHAR 127 | |
# define STRCMP strcmp | |
# define MEMCMP memcmp | |
# define MEMSET memset | |
#endif | |
#ifndef STRCPY_RESULT | |
# define STRCPY_RESULT(dst, len) dst | |
# define TEST_MAIN | |
# ifndef WIDE | |
# define TEST_NAME "strcpy" | |
# else | |
# define TEST_NAME "wcscpy" | |
# endif | |
# include "bench-string.h" | |
# ifndef WIDE | |
# define SIMPLE_STRCPY simple_strcpy | |
# define STRCPY strcpy | |
# else | |
# define SIMPLE_STRCPY simple_wcscpy | |
# define STRCPY wcscpy | |
# endif | |
CHAR *SIMPLE_STRCPY (CHAR *, const CHAR *); | |
IMPL (SIMPLE_STRCPY, 0) | |
IMPL (STRCPY, 1) | |
CHAR * | |
SIMPLE_STRCPY (CHAR *dst, const CHAR *src) | |
{ | |
CHAR *ret = dst; | |
while ((*dst++ = *src++) != '\0'); | |
return ret; | |
} | |
#endif | |
typedef CHAR *(*proto_t) (CHAR *, const CHAR *); | |
static void | |
do_one_test (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); | |
TIMING_PRINT_MEAN ((double) cur, (double) iters); | |
} | |
static void | |
do_test (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; | |
printf ("Length %4zd, alignments in bytes %2zd/%2zd:", len, align1 * sizeof(CHAR), align2 * sizeof(CHAR)); | |
FOR_EACH_IMPL (impl, 0) | |
do_one_test (impl, s2, s1, len); | |
putchar ('\n'); | |
} | |
int | |
test_main (void) | |
{ | |
size_t i; | |
test_init (); | |
printf ("%23s", ""); | |
FOR_EACH_IMPL (impl, 0) | |
printf ("\t%s", impl->name); | |
putchar ('\n'); | |
for (i = 0; i < 16; ++i) | |
{ | |
do_test (0, 0, i, SMALL_CHAR); | |
do_test (0, 0, i, BIG_CHAR); | |
do_test (0, i, i, SMALL_CHAR); | |
do_test (i, 0, i, BIG_CHAR); | |
} | |
for (i = 1; i < 8; ++i) | |
{ | |
do_test (0, 0, 8 << i, SMALL_CHAR); | |
do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR); | |
} | |
for (i = 1; i < 8; ++i) | |
{ | |
do_test (i, 2 * i, 8 << i, SMALL_CHAR); | |
do_test (2 * i, i, 8 << i, BIG_CHAR); | |
do_test (i, i, 8 << i, SMALL_CHAR); | |
do_test (i, i, 8 << i, BIG_CHAR); | |
} | |
for (i = 16; i <= 512; i+=4) | |
{ | |
do_test (0, 4, i, SMALL_CHAR); | |
do_test (4, 0, i, BIG_CHAR); | |
do_test (4, 4, i, SMALL_CHAR); | |
do_test (2, 2, i, BIG_CHAR); | |
do_test (2, 6, i, SMALL_CHAR); | |
do_test (6, 2, i, BIG_CHAR); | |
do_test (1, 7, i, SMALL_CHAR); | |
do_test (7, 1, i, BIG_CHAR); | |
do_test (3, 4, i, SMALL_CHAR); | |
do_test (4, 3, i, BIG_CHAR); | |
do_test (5, 7, i, SMALL_CHAR); | |
do_test (7, 5, i, SMALL_CHAR); | |
} | |
return ret; | |
} | |
#include "../test-skeleton.c" |