string/test-strcpy.c

   1 /* Test and measure strcpy functions.
   2    Copyright (C) 1999, 2002, 2003, 2005, 2011, 2012 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, see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 #ifdef WIDE
  22 # include <wchar.h>
  23 # define CHAR wchar_t
  24 # define UCHAR wchar_t
  25 # define sfmt "ls"
  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 sfmt "s"
  35 # define BIG_CHAR CHAR_MAX
  36 # define SMALL_CHAR 127
  37 # define STRCMP strcmp
  38 # define MEMCMP memcmp
  39 # define MEMSET memset
  40 #endif
  41
  42 #ifndef STRCPY_RESULT
  43 # define STRCPY_RESULT(dst, len) dst
  44 # define TEST_MAIN
  45 # include "test-string.h"
  46 # ifndef WIDE
  47 #  define SIMPLE_STRCPY simple_strcpy
  48 #  define STRCPY strcpy
  49 # else
  50 #  define SIMPLE_STRCPY simple_wcscpy
  51 #  define STRCPY wcscpy
  52 # endif
  53
  54 CHAR *SIMPLE_STRCPY (CHAR *, const CHAR *);
  55
  56 IMPL (SIMPLE_STRCPY, 0)
  57 IMPL (STRCPY, 1)
  58
  59 CHAR *
  60 SIMPLE_STRCPY (CHAR *dst, const CHAR *src)
  61 {
  62   CHAR *ret = dst;
  63   while ((*dst++ = *src++) != '\0');
  64   return ret;
  65 }
  66 #endif
  67
  68 typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
  69
  70 static void
  71 do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,
  72              size_t len __attribute__((unused)))
  73 {
  74   if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
  75     {
  76       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  77              CALL (impl, dst, src), STRCPY_RESULT (dst, len));
  78       ret = 1;
  79       return;
  80     }
  81
  82   if (STRCMP (dst, src) != 0)
  83     {
  84       error (0, 0,
  85              "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
  86              impl->name, dst, src);
  87       ret = 1;
  88       return;
  89     }
  90
  91   if (HP_TIMING_AVAIL)
  92     {
  93       hp_timing_t start __attribute ((unused));
  94       hp_timing_t stop __attribute ((unused));;
  95       hp_timing_t best_time = ~ (hp_timing_t) 0;
  96       size_t i;
  97
  98       for (i = 0; i < 32; ++i)
  99         {
 100           HP_TIMING_NOW (start);
 101           CALL (impl, dst, src);
 102           HP_TIMING_NOW (stop);
 103           HP_TIMING_BEST (best_time, start, stop);
 104         }
 105
 106       printf ("\t%zd", (size_t) best_time);
 107     }
 108 }
 109
 110 static void
 111 do_test (size_t align1, size_t align2, size_t len, int max_char)
 112 {
 113   size_t i;
 114   CHAR *s1, *s2;
 115 /* For wcscpy: align1 and align2 here mean alignment not in bytes,
 116    but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
 117    len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
 118   align1 &= 7;
 119   if ((align1 + len) * sizeof(CHAR) >= page_size)
 120     return;
 121
 122   align2 &= 7;
 123   if ((align2 + len) * sizeof(CHAR) >= page_size)
 124     return;
 125
 126   s1 = (CHAR *) (buf1) + align1;
 127   s2 = (CHAR *) (buf2) + align2;
 128
 129   for (i = 0; i < len; i++)
 130     s1[i] = 32 + 23 * i % (max_char - 32);
 131   s1[len] = 0;
 132
 133   if (HP_TIMING_AVAIL)
 134     printf ("Length %4zd, alignments in bytes %2zd/%2zd:", len, align1 * sizeof(CHAR), align2 * sizeof(CHAR));
 135
 136   FOR_EACH_IMPL (impl, 0)
 137     do_one_test (impl, s2, s1, len);
 138
 139   if (HP_TIMING_AVAIL)
 140     putchar ('\n');
 141 }
 142
 143 static void
 144 do_random_tests (void)
 145 {
 146   size_t i, j, n, align1, align2, len;
 147   UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
 148   UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
 149   UCHAR *res;
 150
 151   for (n = 0; n < ITERATIONS; n++)
 152     {
 153       /* For wcsrchr: align1 and align2 here mean align not in bytes,
 154          but in wchar_ts, in bytes it will equal to align * (sizeof
 155          (wchar_t)).  For strrchr we need to check all alignments from
 156          0 to 63 since some assembly implementations have separate
 157          prolog for alignments more 48. */
 158
 159       align1 = random () & (63 / sizeof(CHAR));
 160       if (random () & 1)
 161         align2 = random () & (63 / sizeof(CHAR));
 162       else
 163         align2 = align1 + (random () & 24);
 164       len = random () & 511;
 165       j = align1;
 166       if (align2 > j)
 167         j = align2;
 168       if (len + j >= 511)
 169         len = 510 - j - (random () & 7);
 170       j = len + align1 + 64;
 171       if (j > 512)
 172         j = 512;
 173       for (i = 0; i < j; i++)
 174         {
 175           if (i == len + align1)
 176             p1[i] = 0;
 177           else
 178             {
 179               p1[i] = random () & BIG_CHAR;
 180               if (i >= align1 && i < len + align1 && !p1[i])
 181                 p1[i] = (random () & SMALL_CHAR) + 3;
 182             }
 183         }
 184
 185       FOR_EACH_IMPL (impl, 1)
 186         {
 187           MEMSET (p2 - 64, '\1', 512 + 64);
 188           res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), (CHAR *) (p1 + align1));
 189           if (res != STRCPY_RESULT (p2 + align2, len))
 190             {
 191               error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
 192                      n, impl->name, align1, align2, len, res,
 193                      STRCPY_RESULT (p2 + align2, len));
 194               ret = 1;
 195             }
 196           for (j = 0; j < align2 + 64; ++j)
 197             {
 198               if (p2[j - 64] != '\1')
 199                 {
 200                   error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
 201                          n, impl->name, align1, align2, len);
 202                   ret = 1;
 203                   break;
 204                 }
 205             }
 206           for (j = align2 + len + 1; j < 512; ++j)
 207             {
 208               if (p2[j] != '\1')
 209                 {
 210                   error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
 211                          n, impl->name, align1, align2, len);
 212                   ret = 1;
 213                   break;
 214                 }
 215             }
 216           if (MEMCMP (p1 + align1, p2 + align2, len + 1))
 217             {
 218               error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
 219                      n, impl->name, align1, align2, len);
 220               ret = 1;
 221             }
 222         }
 223     }
 224 }
 225
 226 int
 227 test_main (void)
 228 {
 229   size_t i;
 230
 231   test_init ();
 232
 233   printf ("%23s", "");
 234   FOR_EACH_IMPL (impl, 0)
 235     printf ("\t%s", impl->name);
 236   putchar ('\n');
 237
 238   for (i = 0; i < 16; ++i)
 239     {
 240       do_test (0, 0, i, SMALL_CHAR);
 241       do_test (0, 0, i, BIG_CHAR);
 242       do_test (0, i, i, SMALL_CHAR);
 243       do_test (i, 0, i, BIG_CHAR);
 244     }
 245
 246   for (i = 1; i < 8; ++i)
 247     {
 248       do_test (0, 0, 8 << i, SMALL_CHAR);
 249       do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
 250     }
 251
 252   for (i = 1; i < 8; ++i)
 253     {
 254       do_test (i, 2 * i, 8 << i, SMALL_CHAR);
 255       do_test (2 * i, i, 8 << i, BIG_CHAR);
 256       do_test (i, i, 8 << i, SMALL_CHAR);
 257       do_test (i, i, 8 << i, BIG_CHAR);
 258     }
 259
 260   do_random_tests ();
 261   return ret;
 262 }
 263
 264 #include "../test-skeleton.c"