/* 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"