| /* Test and measure strlen functions. |
| Copyright (C) 1999, 2002, 2003, 2005 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, (char *) (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, (char *) (p + align)) != len) |
| { |
| error (0, 0, "Iteration %zd - wrong result in function %s (%zd) %zd != %zd, p %p", |
| n, impl->name, align, CALL (impl, (char *) (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" |