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/* Test and measure strlen functions.
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Copyright (C) 1999, 2002, 2003, 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Written by Jakub Jelinek <jakub@redhat.com>, 1999.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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#include "test-string.h"
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typedef size_t (*proto_t) (const char *);
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size_t simple_strlen (const char *);
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size_t builtin_strlen (const char *);
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IMPL (simple_strlen, 0)
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IMPL (builtin_strlen, 0)
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simple_strlen (const char *s)
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builtin_strlen (const char *p)
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return __builtin_strlen (p);
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do_one_test (impl_t *impl, const char *s, size_t exp_len)
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size_t len = CALL (impl, s);
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error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
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hp_timing_t start __attribute ((unused));
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hp_timing_t stop __attribute ((unused));
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hp_timing_t best_time = ~ (hp_timing_t) 0;
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for (i = 0; i < 32; ++i)
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HP_TIMING_NOW (start);
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HP_TIMING_BEST (best_time, start, stop);
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printf ("\t%zd", (size_t) best_time);
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do_test (size_t align, size_t len, int max_char)
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if (align + len >= page_size)
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for (i = 0; i < len; ++i)
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buf1[align + i] = 1 + 7 * i % max_char;
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buf1[align + len] = 0;
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printf ("Length %4zd, alignment %2zd:", len, align);
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FOR_EACH_IMPL (impl, 0)
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do_one_test (impl, (char *) (buf1 + align), len);
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do_random_tests (void)
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size_t i, j, n, align, len;
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unsigned char *p = buf1 + page_size - 512;
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for (n = 0; n < ITERATIONS; n++)
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align = random () & 15;
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len = random () & 511;
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if (len + align > 510)
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len = 511 - align - (random () & 7);
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j = len + align + 64;
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for (i = 0; i < j; i++)
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if (i == len + align)
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p[i] = random () & 255;
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if (i >= align && i < len + align && !p[i])
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p[i] = (random () & 127) + 1;
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FOR_EACH_IMPL (impl, 1)
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if (CALL (impl, (char *) (p + align)) != len)
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error (0, 0, "Iteration %zd - wrong result in function %s (%zd) %zd != %zd, p %p",
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n, impl->name, align, CALL (impl, (char *) (p + align)),
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FOR_EACH_IMPL (impl, 0)
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printf ("\t%s", impl->name);
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for (i = 1; i < 8; ++i)
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for (i = 1; i < 8; ++i)
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for (i = 2; i <= 10; ++i)
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do_test (0, 1 << i, 127);
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do_test (1, 1 << i, 127);
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for (i = 1; i < 8; ++i)
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for (i = 1; i < 8; ++i)
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for (i = 2; i <= 10; ++i)
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do_test (0, 1 << i, 255);
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do_test (1, 1 << i, 255);
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#include "test-skeleton.c"