| /* Measure strlen functions. |
| Copyright (C) 2013-2018 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 |
| #ifndef WIDE |
| # define TEST_NAME "strnlen" |
| #else |
| # define TEST_NAME "wcsnlen" |
| #endif /* WIDE */ |
| #include "bench-string.h" |
| |
| #ifndef WIDE |
| # define STRNLEN strnlen |
| # define CHAR char |
| # define BIG_CHAR CHAR_MAX |
| # define MIDDLE_CHAR 127 |
| # define SIMPLE_STRNLEN simple_strnlen |
| #else |
| # include <wchar.h> |
| # define STRNLEN wcsnlen |
| # define CHAR wchar_t |
| # define BIG_CHAR WCHAR_MAX |
| # define MIDDLE_CHAR 1121 |
| # define SIMPLE_STRNLEN simple_wcsnlen |
| #endif /* WIDE */ |
| |
| typedef size_t (*proto_t) (const CHAR *, size_t); |
| size_t SIMPLE_STRNLEN (const CHAR *, size_t); |
| |
| IMPL (SIMPLE_STRNLEN, 0) |
| IMPL (STRNLEN, 1) |
| |
| size_t |
| SIMPLE_STRNLEN (const CHAR *s, size_t maxlen) |
| { |
| size_t i; |
| |
| for (i = 0; i < maxlen && s[i]; ++i); |
| return i; |
| } |
| |
| static void |
| do_one_test (impl_t *impl, const CHAR *s, size_t maxlen, size_t exp_len) |
| { |
| size_t len = CALL (impl, s, maxlen), i, iters = INNER_LOOP_ITERS; |
| timing_t start, stop, cur; |
| |
| if (len != exp_len) |
| { |
| error (0, 0, "Wrong result in function %s %zd %zd", impl->name, |
| len, exp_len); |
| ret = 1; |
| return; |
| } |
| |
| TIMING_NOW (start); |
| for (i = 0; i < iters; ++i) |
| { |
| CALL (impl, s, maxlen); |
| } |
| TIMING_NOW (stop); |
| |
| TIMING_DIFF (cur, start, stop); |
| |
| TIMING_PRINT_MEAN ((double) cur, (double) iters); |
| } |
| |
| static void |
| do_test (size_t align, size_t len, size_t maxlen, int max_char) |
| { |
| size_t i; |
| |
| align &= 63; |
| if ((align + len) * sizeof (CHAR) >= page_size) |
| return; |
| |
| CHAR *buf = (CHAR *) (buf1); |
| |
| for (i = 0; i < len; ++i) |
| buf[align + i] = 1 + 7 * i % max_char; |
| buf[align + len] = 0; |
| |
| printf ("Length %4zd, alignment %2zd:", len, align); |
| |
| FOR_EACH_IMPL (impl, 0) |
| do_one_test (impl, (CHAR *) (buf + align), maxlen, MIN (len, maxlen)); |
| |
| putchar ('\n'); |
| } |
| |
| 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, i - 1, MIDDLE_CHAR); |
| do_test (0, i, i, MIDDLE_CHAR); |
| do_test (0, i, i + 1, MIDDLE_CHAR); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| { |
| do_test (i, i, i - 1, MIDDLE_CHAR); |
| do_test (i, i, i, MIDDLE_CHAR); |
| do_test (i, i, i + 1, MIDDLE_CHAR); |
| } |
| |
| for (i = 2; i <= 10; ++i) |
| { |
| do_test (0, 1 << i, 5000, MIDDLE_CHAR); |
| do_test (1, 1 << i, 5000, MIDDLE_CHAR); |
| } |
| |
| for (i = 1; i < 8; ++i) |
| do_test (0, i, 5000, BIG_CHAR); |
| |
| for (i = 1; i < 8; ++i) |
| do_test (i, i, 5000, BIG_CHAR); |
| |
| for (i = 2; i <= 10; ++i) |
| { |
| do_test (0, 1 << i, 5000, BIG_CHAR); |
| do_test (1, 1 << i, 5000, BIG_CHAR); |
| } |
| |
| return ret; |
| } |
| |
| #include <support/test-driver.c> |