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/* Test and measure strlen functions.
Copyright (C) 1999, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Jakub Jelinek <jakub@redhat.com>, 1999.
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#define TEST_MAIN
#include "test-string.h"
typedef size_t (*proto_t) (const char *);
size_t simple_strlen (const char *);
size_t builtin_strlen (const char *);
IMPL (simple_strlen, 0)
IMPL (builtin_strlen, 0)
IMPL (strlen, 1)
size_t
simple_strlen (const char *s)
{
const char *p;
for (p = s; *p; ++p);
return p - s;
}
size_t
builtin_strlen (const char *p)
{
return __builtin_strlen (p);
}
static void
do_one_test (impl_t *impl, const char *s, size_t exp_len)
{
size_t len = CALL (impl, s);
if (len != exp_len)
{
error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
len, exp_len);
ret = 1;
return;
}
if (HP_TIMING_AVAIL)
{
hp_timing_t start __attribute ((unused));
hp_timing_t stop __attribute ((unused));
hp_timing_t best_time = ~ (hp_timing_t) 0;
size_t i;
for (i = 0; i < 32; ++i)
{
HP_TIMING_NOW (start);
CALL (impl, s);
HP_TIMING_NOW (stop);
HP_TIMING_BEST (best_time, start, stop);
}
printf ("\t%zd", (size_t) best_time);
}
}
static void
do_test (size_t align, size_t len, int max_char)
{
size_t i;
align &= 7;
if (align + len >= page_size)
return;
for (i = 0; i < len; ++i)
buf1[align + i] = 1 + 7 * i % max_char;
buf1[align + len] = 0;
if (HP_TIMING_AVAIL)
printf ("Length %4zd, alignment %2zd:", len, align);
FOR_EACH_IMPL (impl, 0)
do_one_test (impl, buf1 + align, len);
if (HP_TIMING_AVAIL)
putchar ('\n');
}
static void
do_random_tests (void)
{
size_t i, j, n, align, len;
unsigned char *p = buf1 + page_size - 512;
for (n = 0; n < ITERATIONS; n++)
{
align = random () & 15;
len = random () & 511;
if (len + align > 510)
len = 511 - align - (random () & 7);
j = len + align + 64;
if (j > 512)
j = 512;
for (i = 0; i < j; i++)
{
if (i == len + align)
p[i] = 0;
else
{
p[i] = random () & 255;
if (i >= align && i < len + align && !p[i])
p[i] = (random () & 127) + 1;
}
}
FOR_EACH_IMPL (impl, 1)
if (CALL (impl, p + align) != len)
{
error (0, 0, "Iteration %zd - wrong result in function %s (%zd) %zd != %zd, p %p",
n, impl->name, align, CALL (impl, p + align), len, p);
ret = 1;
}
}
}
int
test_main (void)
{
size_t i;
test_init ();
printf ("%20s", "");
FOR_EACH_IMPL (impl, 0)
printf ("\t%s", impl->name);
putchar ('\n');
for (i = 1; i < 8; ++i)
do_test (0, i, 127);
for (i = 1; i < 8; ++i)
do_test (i, i, 127);
for (i = 2; i <= 10; ++i)
{
do_test (0, 1 << i, 127);
do_test (1, 1 << i, 127);
}
for (i = 1; i < 8; ++i)
do_test (0, i, 255);
for (i = 1; i < 8; ++i)
do_test (i, i, 255);
for (i = 2; i <= 10; ++i)
{
do_test (0, 1 << i, 255);
do_test (1, 1 << i, 255);
}
do_random_tests ();
return ret;
}
#include "../test-skeleton.c"
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