1 /* Test and measure strlen functions.
2 Copyright (C) 1999, 2002, 2003, 2005, 2010 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Written by Jakub Jelinek <jakub@redhat.com>, 1999.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 #include "test-string.h"
24 typedef size_t (*proto_t) (const char *, size_t);
25 size_t simple_strnlen (const char *, size_t);
27 IMPL (simple_strnlen, 0)
31 simple_strnlen (const char *s, size_t maxlen)
35 for (i = 0; i < maxlen && s[i]; ++i);
40 do_one_test (impl_t *impl, const char *s, size_t maxlen, size_t exp_len)
42 size_t len = CALL (impl, s, maxlen);
45 error (0, 0, "Wrong result in function %s %zd %zd", impl->name,
53 hp_timing_t start __attribute ((unused));
54 hp_timing_t stop __attribute ((unused));
55 hp_timing_t best_time = ~ (hp_timing_t) 0;
58 for (i = 0; i < 32; ++i)
60 HP_TIMING_NOW (start);
61 CALL (impl, s, maxlen);
63 HP_TIMING_BEST (best_time, start, stop);
66 printf ("\t%zd", (size_t) best_time);
71 do_test (size_t align, size_t len, size_t maxlen, int max_char)
76 if (align + len >= page_size)
79 for (i = 0; i < len; ++i)
80 buf1[align + i] = 1 + 7 * i % max_char;
81 buf1[align + len] = 0;
84 printf ("Length %4zd, alignment %2zd:", len, align);
86 FOR_EACH_IMPL (impl, 0)
87 do_one_test (impl, (char *) (buf1 + align), maxlen, MIN (len, maxlen));
94 do_random_tests (void)
96 size_t i, j, n, align, len;
97 unsigned char *p = buf1 + page_size - 512;
99 for (n = 0; n < ITERATIONS; n++)
101 align = random () & 15;
102 len = random () & 511;
103 if (len + align > 510)
104 len = 511 - align - (random () & 7);
105 j = len + align + 64;
109 for (i = 0; i < j; i++)
111 if (i == len + align)
115 p[i] = random () & 255;
116 if (i >= align && i < len + align && !p[i])
117 p[i] = (random () & 127) + 1;
121 FOR_EACH_IMPL (impl, 1)
124 && CALL (impl, (char *) (p + align), len - 1) != len - 1)
126 error (0, 0, "Iteration %zd (limited) - wrong result in function %s (%zd) %zd != %zd, p %p",
127 n, impl->name, align,
128 CALL (impl, (char *) (p + align), len - 1), len - 1, p);
131 if (CALL (impl, (char *) (p + align), len) != len)
133 error (0, 0, "Iteration %zd (exact) - wrong result in function %s (%zd) %zd != %zd, p %p",
134 n, impl->name, align,
135 CALL (impl, (char *) (p + align), len), len, p);
138 if (CALL (impl, (char *) (p + align), len + 1) != len)
140 error (0, 0, "Iteration %zd (long) - wrong result in function %s (%zd) %zd != %zd, p %p",
141 n, impl->name, align,
142 CALL (impl, (char *) (p + align), len + 1), len, p);
157 FOR_EACH_IMPL (impl, 0)
158 printf ("\t%s", impl->name);
161 for (i = 1; i < 8; ++i)
163 do_test (0, i, i - 1, 127);
164 do_test (0, i, i, 127);
165 do_test (0, i, i + 1, 127);
168 for (i = 1; i < 8; ++i)
170 do_test (i, i, i - 1, 127);
171 do_test (i, i, i, 127);
172 do_test (i, i, i + 1, 127);
175 for (i = 2; i <= 10; ++i)
177 do_test (0, 1 << i, 5000, 127);
178 do_test (1, 1 << i, 5000, 127);
181 for (i = 1; i < 8; ++i)
182 do_test (0, i, 5000, 255);
184 for (i = 1; i < 8; ++i)
185 do_test (i, i, 5000, 255);
187 for (i = 2; i <= 10; ++i)
189 do_test (0, 1 << i, 5000, 255);
190 do_test (1, 1 << i, 5000, 255);
197 #include "../test-skeleton.c"