string/test-strcat.c

   1 /* Test and measure strcat functions.
   2    Copyright (C) 1999, 2002 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Written by Jakub Jelinek <jakub@redhat.com>, 1999.
   5
   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.
  10
  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.
  15
  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
  19    02111-1307 USA.  */
  20
  21 #define TEST_MAIN
  22 #include "test-string.h"
  23
  24 typedef char *(*proto_t) (char *, const char *);
  25 char *simple_strcat (char *, const char *);
  26
  27 IMPL (simple_strcat, 0)
  28 IMPL (strcat, 1)
  29
  30 char *
  31 simple_strcat (char *dst, const char *src)
  32 {
  33   char *ret = dst;
  34   while (*dst++ != '\0');
  35   --dst;
  36   while ((*dst++ = *src++) != '\0');
  37   return ret;
  38 }
  39
  40 static void
  41 do_one_test (impl_t *impl, char *dst, const char *src)
  42 {
  43   size_t k = strlen (dst);
  44   if (CALL (impl, dst, src) != dst)
  45     {
  46       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  47              CALL (impl, dst, src), dst);
  48       ret = 1;
  49       return;
  50     }
  51
  52   if (strcmp (dst + k, src) != 0)
  53     {
  54       error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
  55              impl->name, dst, src);
  56       ret = 1;
  57       return;
  58     }
  59
  60   if (HP_TIMING_AVAIL)
  61     {
  62       hp_timing_t start, stop, best_time = ~ (hp_timing_t) 0;
  63       size_t i;
  64
  65       for (i = 0; i < 32; ++i)
  66         {
  67           dst[k] = '\0';
  68           HP_TIMING_NOW (start);
  69           CALL (impl, dst, src);
  70           HP_TIMING_NOW (stop);
  71           HP_TIMING_BEST (best_time, start, stop);
  72         }
  73
  74       printf ("\t%zd", (size_t) best_time);
  75     }
  76 }
  77
  78 static void
  79 do_test (size_t align1, size_t align2, size_t len1, size_t len2, int max_char)
  80 {
  81   size_t i;
  82   char *s1, *s2;
  83
  84   align1 &= 7;
  85   if (align1 + len1 >= page_size)
  86     return;
  87
  88   align2 &= 7;
  89   if (align2 + len1 + len2 >= page_size)
  90     return;
  91
  92   s1 = buf1 + align1;
  93   s2 = buf2 + align2;
  94
  95   for (i = 0; i < len1; ++i)
  96     s1[i] = 32 + 23 * i % (max_char - 32);
  97   s1[len1] = '\0';
  98
  99   for (i = 0; i < len2; i++)
 100     s2[i] = 32 + 23 * i % (max_char - 32);
 101
 102   if (HP_TIMING_AVAIL)
 103     printf ("Length %4zd/%4zd, alignment %2zd/%2zd:", len1, len2, align1, align2);
 104
 105   FOR_EACH_IMPL (impl, 0)
 106     {
 107       s2[len2] = '\0';
 108       do_one_test (impl, s2, s1);
 109     }
 110
 111   if (HP_TIMING_AVAIL)
 112     putchar ('\n');
 113 }
 114
 115 static void
 116 do_random_tests (void)
 117 {
 118   size_t i, j, n, align1, align2, len1, len2;
 119   unsigned char *p1 = buf1 + page_size - 512;
 120   unsigned char *p2 = buf2 + page_size - 512;
 121   unsigned char *res;
 122
 123   for (n = 0; n < ITERATIONS; n++)
 124     {
 125       align1 = random () & 31;
 126       if (random () & 1)
 127         align2 = random () & 31;
 128       else
 129         align2 = align1 + (random () & 24);
 130       len1 = random () & 511;
 131       if (len1 + align2 > 512)
 132         len2 = random () & 7;
 133       else
 134         len2 = (512 - len1 - align2) * (random () & (1024 * 1024 - 1))
 135                / (1024 * 1024);
 136       j = align1;
 137       if (align2 + len2 > j)
 138         j = align2 + len2;
 139       if (len1 + j >= 511)
 140         len1 = 510 - j - (random () & 7);
 141       if (len1 >= 512)
 142         len1 = 0;
 143       if (align1 + len1 < 512 - 8)
 144         {
 145           j = 510 - align1 - len1 - (random () & 31);
 146           if (j > 0 && j < 512)
 147             align1 += j;
 148         }
 149       j = len1 + align1 + 64;
 150       if (j > 512)
 151         j = 512;
 152       for (i = 0; i < j; i++)
 153         {
 154           if (i == len1 + align1)
 155             p1[i] = 0;
 156           else
 157             {
 158               p1[i] = random () & 255;
 159               if (i >= align1 && i < len1 + align1 && !p1[i])
 160                 p1[i] = (random () & 127) + 3;
 161             }
 162         }
 163       for (i = 0; i < len2; i++)
 164         {
 165           buf1[i] = random () & 255;
 166           if (!buf1[i])
 167             buf1[i] = (random () & 127) + 3;
 168         }
 169       buf1[len2] = 0;
 170
 171       FOR_EACH_IMPL (impl, 1)
 172         {
 173           memset (p2 - 64, '\1', align2 + 64);
 174           memset (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1);
 175           memcpy (p2 + align2, buf1, len2 + 1);
 176           res = CALL (impl, p2 + align2, p1 + align1);
 177           if (res != p2 + align2)
 178             {
 179               error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd %zd) %p != %p",
 180                      n, impl->name, align1, align2, len1, len2, res,
 181                      p2 + align2);
 182               ret = 1;
 183             }
 184           for (j = 0; j < align2 + 64; ++j)
 185             {
 186               if (p2[j - 64] != '\1')
 187                 {
 188                   error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd, %zd)",
 189                          n, impl->name, align1, align2, len1, len2);
 190                   ret = 1;
 191                   break;
 192                 }
 193             }
 194           if (memcmp (p2 + align2, buf1, len2))
 195             {
 196               error (0, 0, "Iteration %zd - garbage in string before, %s (%zd, %zd, %zd, %zd)",
 197                      n, impl->name, align1, align2, len1, len2);
 198               ret = 1;
 199             }
 200           for (j = align2 + len1 + len2 + 1; j < 512; ++j)
 201             {
 202               if (p2[j] != '\1')
 203                 {
 204                   error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd, %zd)",
 205                          n, impl->name, align1, align2, len1, len2);
 206                   ret = 1;
 207                   break;
 208                 }
 209             }
 210           if (memcmp (p1 + align1, p2 + align2 + len2, len1 + 1))
 211             {
 212               error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd, %zd)",
 213                      n, impl->name, align1, align2, len1, len2);
 214               ret = 1;
 215             }
 216         }
 217     }
 218 }
 219
 220 int
 221 test_main (void)
 222 {
 223   size_t i;
 224
 225   test_init ();
 226
 227   printf ("%28s", "");
 228   FOR_EACH_IMPL (impl, 0)
 229     printf ("\t%s", impl->name);
 230   putchar ('\n');
 231
 232   for (i = 0; i < 16; ++i)
 233     {
 234       do_test (0, 0, i, i, 127);
 235       do_test (0, 0, i, i, 255);
 236       do_test (0, i, i, i, 127);
 237       do_test (i, 0, i, i, 255);
 238     }
 239
 240   for (i = 1; i < 8; ++i)
 241     {
 242       do_test (0, 0, 8 << i, 8 << i, 127);
 243       do_test (8 - i, 2 * i, 8 << i, 8 << i, 127);
 244       do_test (0, 0, 8 << i, 2 << i, 127);
 245       do_test (8 - i, 2 * i, 8 << i, 2 << i, 127);
 246     }
 247
 248   for (i = 1; i < 8; ++i)
 249     {
 250       do_test (i, 2 * i, 8 << i, 1, 127);
 251       do_test (2 * i, i, 8 << i, 1, 255);
 252       do_test (i, i, 8 << i, 10, 127);
 253       do_test (i, i, 8 << i, 10, 255);
 254     }
 255
 256   do_random_tests ();
 257   return ret;
 258 }
 259
 260 #include "../test-skeleton.c"