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glibc/benchtests/bench-strcasestr.c
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/* Measure strcasestr 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/>. */ | |
#define TEST_MAIN | |
#define TEST_NAME "strcasestr" | |
#include "bench-string.h" | |
#define STRCASESTR simple_strcasestr | |
#define NO_ALIAS | |
#define __strncasecmp strncasecmp | |
#include "../string/strcasestr.c" | |
static char * | |
stupid_strcasestr (const char *s1, const char *s2) | |
{ | |
ssize_t s1len = strlen (s1); | |
ssize_t s2len = strlen (s2); | |
if (s2len > s1len) | |
return NULL; | |
for (ssize_t i = 0; i <= s1len - s2len; ++i) | |
{ | |
size_t j; | |
for (j = 0; j < s2len; ++j) | |
if (tolower (s1[i + j]) != tolower (s2[j])) | |
break; | |
if (j == s2len) | |
return (char *) s1 + i; | |
} | |
return NULL; | |
} | |
typedef char *(*proto_t) (const char *, const char *); | |
IMPL (stupid_strcasestr, 0) | |
IMPL (simple_strcasestr, 0) | |
IMPL (strcasestr, 1) | |
static void | |
do_one_test (impl_t *impl, const char *s1, const char *s2, char *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); | |
TIMING_PRINT_MEAN ((double) cur, (double) iters); | |
} | |
static void | |
do_test (size_t align1, size_t align2, size_t len1, size_t len2, | |
int fail) | |
{ | |
char *s1 = (char *) (buf1 + align1); | |
char *s2 = (char *) (buf2 + align2); | |
static const char d[] = "1234567890abcxyz"; | |
#define dl (sizeof (d) - 1) | |
char *ss2 = s2; | |
for (size_t l = len2; l > 0; l = l > dl ? l - dl : 0) | |
{ | |
size_t t = l > dl ? dl : l; | |
ss2 = mempcpy (ss2, d, t); | |
} | |
s2[len2] = '\0'; | |
if (fail) | |
{ | |
char *ss1 = s1; | |
for (size_t l = len1; l > 0; l = l > dl ? l - dl : 0) | |
{ | |
size_t t = l > dl ? dl : l; | |
memcpy (ss1, d, t); | |
++ss1[len2 > 7 ? 7 : len2 - 1]; | |
ss1 += t; | |
} | |
} | |
else | |
{ | |
memset (s1, '0', len1); | |
for (size_t i = 0; i < len2; ++i) | |
s1[len1 - len2 + i] = toupper (s2[i]); | |
} | |
s1[len1] = '\0'; | |
printf ("Length %4zd/%zd, alignment %2zd/%2zd, %s:", | |
len1, len2, align1, align2, fail ? "fail" : "found"); | |
FOR_EACH_IMPL (impl, 0) | |
do_one_test (impl, s1, s2, fail ? NULL : s1 + len1 - len2); | |
putchar ('\n'); | |
} | |
static int | |
test_main (void) | |
{ | |
test_init (); | |
printf ("%23s", ""); | |
FOR_EACH_IMPL (impl, 0) | |
printf ("\t%s", impl->name); | |
putchar ('\n'); | |
for (size_t klen = 2; klen < 32; ++klen) | |
for (size_t hlen = 2 * klen; hlen < 16 * klen; hlen += klen) | |
{ | |
do_test (0, 0, hlen, klen, 0); | |
do_test (0, 0, hlen, klen, 1); | |
do_test (0, 3, hlen, klen, 0); | |
do_test (0, 3, hlen, klen, 1); | |
do_test (0, 9, hlen, klen, 0); | |
do_test (0, 9, hlen, klen, 1); | |
do_test (0, 15, hlen, klen, 0); | |
do_test (0, 15, hlen, klen, 1); | |
do_test (3, 0, hlen, klen, 0); | |
do_test (3, 0, hlen, klen, 1); | |
do_test (3, 3, hlen, klen, 0); | |
do_test (3, 3, hlen, klen, 1); | |
do_test (3, 9, hlen, klen, 0); | |
do_test (3, 9, hlen, klen, 1); | |
do_test (3, 15, hlen, klen, 0); | |
do_test (3, 15, hlen, klen, 1); | |
do_test (9, 0, hlen, klen, 0); | |
do_test (9, 0, hlen, klen, 1); | |
do_test (9, 3, hlen, klen, 0); | |
do_test (9, 3, hlen, klen, 1); | |
do_test (9, 9, hlen, klen, 0); | |
do_test (9, 9, hlen, klen, 1); | |
do_test (9, 15, hlen, klen, 0); | |
do_test (9, 15, hlen, klen, 1); | |
do_test (15, 0, hlen, klen, 0); | |
do_test (15, 0, hlen, klen, 1); | |
do_test (15, 3, hlen, klen, 0); | |
do_test (15, 3, hlen, klen, 1); | |
do_test (15, 9, hlen, klen, 0); | |
do_test (15, 9, hlen, klen, 1); | |
do_test (15, 15, hlen, klen, 0); | |
do_test (15, 15, hlen, klen, 1); | |
} | |
do_test (0, 0, page_size - 1, 16, 0); | |
do_test (0, 0, page_size - 1, 16, 1); | |
return ret; | |
} | |
#include "../test-skeleton.c" |