string/test-strcpy.c

   1 /* Test and measure strcpy functions.
   2    Copyright (C) 1999, 2002, 2003, 2005, 2011 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Written by Jakub Jelinek <jakub@redhat.com>, 1999.
   5    Added wcscpy support by Liubov Dmitrieva <liubov.dmitrieva@gmail.com>, 2011
   6
   7    The GNU C Library is free software; you can redistribute it and/or
   8    modify it under the terms of the GNU Lesser General Public
   9    License as published by the Free Software Foundation; either
  10    version 2.1 of the License, or (at your option) any later version.
  11
  12    The GNU C Library is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15    Lesser General Public License for more details.
  16
  17    You should have received a copy of the GNU Lesser General Public
  18    License along with the GNU C Library; if not, write to the Free
  19    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  20    02111-1307 USA.  */
  21
  22 #ifdef WIDE
  23 # include <wchar.h>
  24 # define CHAR wchar_t
  25 # define UCHAR wchar_t
  26 # define BIG_CHAR WCHAR_MAX
  27 # define SMALL_CHAR 1273
  28 # define STRCMP wcscmp
  29 # define MEMCMP wmemcmp
  30 # define MEMSET wmemset
  31 #else
  32 # define CHAR char
  33 # define UCHAR unsigned char
  34 # define BIG_CHAR CHAR_MAX
  35 # define SMALL_CHAR 127
  36 # define STRCMP strcmp
  37 # define MEMCMP memcmp
  38 # define MEMSET memset
  39 #endif
  40
  41 #ifndef STRCPY_RESULT
  42 # define STRCPY_RESULT(dst, len) dst
  43 # define TEST_MAIN
  44 # include "test-string.h"
  45 # ifndef WIDE
  46 #  define SIMPLE_STRCPY simple_strcpy
  47 #  define STRCPY strcpy
  48 # else
  49 #  define SIMPLE_STRCPY simple_wcscpy
  50 #  define STRCPY wcscpy
  51 # endif
  52
  53 CHAR *SIMPLE_STRCPY (CHAR *, const CHAR *);
  54
  55 IMPL (SIMPLE_STRCPY, 0)
  56 IMPL (STRCPY, 1)
  57
  58 CHAR *
  59 SIMPLE_STRCPY (CHAR *dst, const CHAR *src)
  60 {
  61   CHAR *ret = dst;
  62   while ((*dst++ = *src++) != '\0');
  63   return ret;
  64 }
  65 #endif
  66
  67 typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
  68
  69 static void
  70 do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,
  71              size_t len __attribute__((unused)))
  72 {
  73   if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
  74     {
  75       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  76              CALL (impl, dst, src), STRCPY_RESULT (dst, len));
  77       ret = 1;
  78       return;
  79     }
  80
  81   if (STRCMP (dst, src) != 0)
  82     {
  83       error (0, 0, "Wrong result in function %s dst \"%s\" src \"%s\"",
  84              impl->name, dst, src);
  85       ret = 1;
  86       return;
  87     }
  88
  89   if (HP_TIMING_AVAIL)
  90     {
  91       hp_timing_t start __attribute ((unused));
  92       hp_timing_t stop __attribute ((unused));;
  93       hp_timing_t best_time = ~ (hp_timing_t) 0;
  94       size_t i;
  95
  96       for (i = 0; i < 32; ++i)
  97         {
  98           HP_TIMING_NOW (start);
  99           CALL (impl, dst, src);
 100           HP_TIMING_NOW (stop);
 101           HP_TIMING_BEST (best_time, start, stop);
 102         }
 103
 104       printf ("\t%zd", (size_t) best_time);
 105     }
 106 }
 107
 108 static void
 109 do_test (size_t align1, size_t align2, size_t len, int max_char)
 110 {
 111   size_t i;
 112   CHAR *s1, *s2;
 113 /* For wcscpy: align1 and align2 here mean alignment not in bytes,
 114    but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
 115    len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
 116   align1 &= 7;
 117   if ((align1 + len) * sizeof(CHAR) >= page_size)
 118     return;
 119
 120   align2 &= 7;
 121   if ((align2 + len) * sizeof(CHAR) >= page_size)
 122     return;
 123
 124   s1 = (CHAR *) (buf1) + align1;
 125   s2 = (CHAR *) (buf2) + align2;
 126
 127   for (i = 0; i < len; i++)
 128     s1[i] = 32 + 23 * i % (max_char - 32);
 129   s1[len] = 0;
 130
 131   if (HP_TIMING_AVAIL)
 132     printf ("Length %4zd, alignments in bytes %2zd/%2zd:", len, align1 * sizeof(CHAR), align2 * sizeof(CHAR));
 133
 134   FOR_EACH_IMPL (impl, 0)
 135     do_one_test (impl, s2, s1, len);
 136
 137   if (HP_TIMING_AVAIL)
 138     putchar ('\n');
 139 }
 140
 141 static void
 142 do_random_tests (void)
 143 {
 144   size_t i, j, n, align1, align2, len;
 145   UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
 146   UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
 147   UCHAR *res;
 148
 149   for (n = 0; n < ITERATIONS; n++)
 150     {
 151       /* For wcsrchr: align1 and align2 here mean align not in bytes,
 152          but in wchar_ts, in bytes it will equal to align * (sizeof
 153          (wchar_t)).  For strrchr we need to check all alignments from
 154          0 to 63 since some assembly implementations have separate
 155          prolog for alignments more 48. */
 156
 157       align1 = random () & (63 / sizeof(CHAR));
 158       if (random () & 1)
 159         align2 = random () & (63 / sizeof(CHAR));
 160       else
 161         align2 = align1 + (random () & 24);
 162       len = random () & 511;
 163       j = align1;
 164       if (align2 > j)
 165         j = align2;
 166       if (len + j >= 511)
 167         len = 510 - j - (random () & 7);
 168       j = len + align1 + 64;
 169       if (j > 512)
 170         j = 512;
 171       for (i = 0; i < j; i++)
 172         {
 173           if (i == len + align1)
 174             p1[i] = 0;
 175           else
 176             {
 177               p1[i] = random () & BIG_CHAR;
 178               if (i >= align1 && i < len + align1 && !p1[i])
 179                 p1[i] = (random () & SMALL_CHAR) + 3;
 180             }
 181         }
 182
 183       FOR_EACH_IMPL (impl, 1)
 184         {
 185           MEMSET (p2 - 64, '\1', 512 + 64);
 186           res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), (CHAR *) (p1 + align1));
 187           if (res != STRCPY_RESULT (p2 + align2, len))
 188             {
 189               error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
 190                      n, impl->name, align1, align2, len, res,
 191                      STRCPY_RESULT (p2 + align2, len));
 192               ret = 1;
 193             }
 194           for (j = 0; j < align2 + 64; ++j)
 195             {
 196               if (p2[j - 64] != '\1')
 197                 {
 198                   error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
 199                          n, impl->name, align1, align2, len);
 200                   ret = 1;
 201                   break;
 202                 }
 203             }
 204           for (j = align2 + len + 1; j < 512; ++j)
 205             {
 206               if (p2[j] != '\1')
 207                 {
 208                   error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
 209                          n, impl->name, align1, align2, len);
 210                   ret = 1;
 211                   break;
 212                 }
 213             }
 214           if (MEMCMP (p1 + align1, p2 + align2, len + 1))
 215             {
 216               error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
 217                      n, impl->name, align1, align2, len);
 218               ret = 1;
 219             }
 220         }
 221     }
 222 }
 223
 224 int
 225 test_main (void)
 226 {
 227   size_t i;
 228
 229   test_init ();
 230
 231   printf ("%23s", "");
 232   FOR_EACH_IMPL (impl, 0)
 233     printf ("\t%s", impl->name);
 234   putchar ('\n');
 235
 236   for (i = 0; i < 16; ++i)
 237     {
 238       do_test (0, 0, i, SMALL_CHAR);
 239       do_test (0, 0, i, BIG_CHAR);
 240       do_test (0, i, i, SMALL_CHAR);
 241       do_test (i, 0, i, BIG_CHAR);
 242     }
 243
 244   for (i = 1; i < 8; ++i)
 245     {
 246       do_test (0, 0, 8 << i, SMALL_CHAR);
 247       do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
 248     }
 249
 250   for (i = 1; i < 8; ++i)
 251     {
 252       do_test (i, 2 * i, 8 << i, SMALL_CHAR);
 253       do_test (2 * i, i, 8 << i, BIG_CHAR);
 254       do_test (i, i, 8 << i, SMALL_CHAR);
 255       do_test (i, i, 8 << i, BIG_CHAR);
 256     }
 257
 258   do_random_tests ();
 259   return ret;
 260 }
 261
 262 #include "../test-skeleton.c"