1 /* Measure STRLEN functions.
2 Copyright (C) 2013-2015 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, see
17 <http://www.gnu.org/licenses/>. */
21 # define TEST_NAME "strlen"
23 # define TEST_NAME "wcslen"
25 #include "bench-string.h"
28 # define STRLEN strlen
30 # define MAX_CHAR CHAR_MAX
33 # define STRLEN wcslen
35 # define MAX_CHAR WCHAR_MAX
38 typedef size_t (*proto_t) (const CHAR *);
41 simple_STRLEN (const CHAR *s)
51 builtin_strlen (const CHAR *p)
53 return __builtin_strlen (p);
55 IMPL (builtin_strlen, 0)
58 IMPL (simple_STRLEN, 0)
63 do_one_test (impl_t *impl, const CHAR *s, size_t exp_len)
65 size_t len = CALL (impl, s), i, iters = INNER_LOOP_ITERS;
66 timing_t start, stop, cur;
70 error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
77 for (i = 0; i < iters; ++i)
83 TIMING_DIFF (cur, start, stop);
85 TIMING_PRINT_MEAN ((double) cur, (double) iters);
89 do_test (size_t align, size_t len)
94 if (align + sizeof(CHAR) * len >= page_size)
97 CHAR *buf = (CHAR *) (buf1);
99 for (i = 0; i < len; ++i)
100 buf[align + i] = 1 + 11111 * i % MAX_CHAR;
101 buf[align + len] = 0;
103 printf ("Length %4zd, alignment %2zd:", len, align);
105 FOR_EACH_IMPL (impl, 0)
106 do_one_test (impl, (CHAR *) (buf + align), len);
119 FOR_EACH_IMPL (impl, 0)
120 printf ("\t%s", impl->name);
123 /* Checking with only 4 * N alignments for wcslen, other alignments are wrong for wchar_t type arrays*/
125 for (i = 1; i < 8; ++i)
127 do_test (sizeof(CHAR) * i, i);
131 for (i = 2; i <= 12; ++i)
134 do_test (sizeof(CHAR) * 7, 1 << i);
135 do_test (sizeof(CHAR) * i, 1 << i);
136 do_test (sizeof(CHAR) * i, (size_t)((1 << i) / 1.5));
142 #include "../test-skeleton.c"