1 /* Test and measure memccpy functions.
2 Copyright (C) 1999, 2002, 2003, 2005 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 void *simple_memccpy (void *, const void *, int, size_t);
25 void *stupid_memccpy (void *, const void *, int, size_t);
27 IMPL (stupid_memccpy, 0)
28 IMPL (simple_memccpy, 0)
32 simple_memccpy (void *dst, const void *src, int c, size_t n)
38 if ((*d++ = *s++) == (char) c)
45 stupid_memccpy (void *dst, const void *src, int c, size_t n)
47 void *p = memchr (src, c, n);
50 return mempcpy (dst, src, p - src + 1);
56 typedef void *(*proto_t) (void *, const void *, int c, size_t);
59 do_one_test (impl_t *impl, void *dst, const void *src, int c, size_t len,
62 void *expect = len > n ? NULL : (char *) dst + len;
63 if (CALL (impl, dst, src, c, n) != expect)
65 error (0, 0, "Wrong result in function %s %p %p", impl->name,
66 CALL (impl, dst, src, c, n), expect);
71 if (memcmp (dst, src, len > n ? n : len) != 0)
73 error (0, 0, "Wrong result in function %s", impl->name);
80 hp_timing_t start __attribute__ ((unused));
81 hp_timing_t stop __attribute__ ((unused));
82 hp_timing_t best_time = ~ (hp_timing_t) 0;
85 for (i = 0; i < 32; ++i)
87 HP_TIMING_NOW (start);
88 CALL (impl, dst, src, c, n);
90 HP_TIMING_BEST (best_time, start, stop);
93 printf ("\t%zd", (size_t) best_time);
98 do_test (size_t align1, size_t align2, int c, size_t len, size_t n,
105 if (align1 + len >= page_size)
109 if (align2 + len >= page_size)
112 s1 = (char *) (buf1 + align1);
113 s2 = (char *) (buf2 + align2);
115 for (i = 0; i < len - 1; ++i)
117 s1[i] = 32 + 23 * i % (max_char - 32);
118 if (s1[i] == (char) c)
122 for (i = len; i + align1 < page_size && i < len + 64; ++i)
123 s1[i] = 32 + 32 * i % (max_char - 32);
126 printf ("Length %4zd, n %4zd, char %d, alignment %2zd/%2zd:", len, n, c, align1, align2);
128 FOR_EACH_IMPL (impl, 0)
129 do_one_test (impl, s2, s1, c, len, n);
136 do_random_tests (void)
138 size_t i, j, n, align1, align2, len, size, mode;
139 unsigned char *p1 = buf1 + page_size - 512;
140 unsigned char *p2 = buf2 + page_size - 512;
141 unsigned char *res, c;
143 for (n = 0; n < ITERATIONS; n++)
149 size = random () & 255;
150 align1 = 512 - size - (random () & 15);
152 align2 = align1 - (random () & 24);
154 align2 = align1 - (random () & 31);
162 len = size - (random () & 31);
166 len = random () & 511;
170 align1 = random () & 31;
172 align2 = random () & 31;
174 align2 = align1 + (random () & 24);
175 len = random () & 511;
181 size = random () & 511;
183 size = 512 - j - (random() & 31);
187 if ((mode & 8) && len + j >= 512)
188 len = 512 - j - (random () & 7);
190 j = len + align1 + 64;
193 for (i = 0; i < j; i++)
195 if (i == len + align1)
199 p1[i] = random () & 255;
200 if (i >= align1 && i < len + align1 && p1[i] == c)
201 p1[i] = (random () & 127) + 3 + c;
205 FOR_EACH_IMPL (impl, 1)
207 unsigned char *expect;
208 memset (p2 - 64, '\1', 512 + 64);
209 res = CALL (impl, p2 + align2, p1 + align1, (char) c, size);
213 expect = p2 + align2 + len + 1;
217 error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd, %zd, %d) %p != %p",
218 n, impl->name, align1, align2, len, size, c, res, expect);
221 for (j = 0; j < align2 + 64; ++j)
223 if (p2[j - 64] != '\1')
225 error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
226 n, impl->name, align1, align2, len);
231 j = align2 + len + 1;
232 if (size + align2 < j)
238 error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
239 n, impl->name, align1, align2, len);
247 if (memcmp (p1 + align1, p2 + align2, j))
249 error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
250 n, impl->name, align1, align2, len);
265 FOR_EACH_IMPL (impl, 0)
266 printf ("\t%s", impl->name);
269 for (i = 1; i < 8; ++i)
271 do_test (i, i, 12, 16, 16, 127);
272 do_test (i, i, 23, 16, 16, 255);
273 do_test (i, 2 * i, 28, 16, 16, 127);
274 do_test (2 * i, i, 31, 16, 16, 255);
275 do_test (8 - i, 2 * i, 1, 1 << i, 2 << i, 127);
276 do_test (2 * i, 8 - i, 17, 2 << i, 1 << i, 127);
277 do_test (8 - i, 2 * i, 0, 1 << i, 2 << i, 255);
278 do_test (2 * i, 8 - i, i, 2 << i, 1 << i, 255);
281 for (i = 1; i < 8; ++i)
283 do_test (0, 0, i, 4 << i, 8 << i, 127);
284 do_test (0, 0, i, 16 << i, 8 << i, 127);
285 do_test (8 - i, 2 * i, i, 4 << i, 8 << i, 127);
286 do_test (8 - i, 2 * i, i, 16 << i, 8 << i, 127);
293 #include "../test-skeleton.c"