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, 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 sfmt "ls"
  27 # define BIG_CHAR WCHAR_MAX
  28 # define SMALL_CHAR 1273
  29 # define STRCMP wcscmp
  30 # define MEMCMP wmemcmp
  31 # define MEMSET wmemset
  32 #else
  33 # define CHAR char
  34 # define UCHAR unsigned char
  35 # define sfmt "s"
  36 # define BIG_CHAR CHAR_MAX
  37 # define SMALL_CHAR 127
  38 # define STRCMP strcmp
  39 # define MEMCMP memcmp
  40 # define MEMSET memset
  41 #endif
  42
  43 #ifndef STRCPY_RESULT
  44 # define STRCPY_RESULT(dst, len) dst
  45 # define TEST_MAIN
  46 # include "test-string.h"
  47 # ifndef WIDE
  48 #  define SIMPLE_STRCPY simple_strcpy
  49 #  define STRCPY strcpy
  50 # else
  51 #  define SIMPLE_STRCPY simple_wcscpy
  52 #  define STRCPY wcscpy
  53 # endif
  54
  55 CHAR *SIMPLE_STRCPY (CHAR *, const CHAR *);
  56
  57 IMPL (SIMPLE_STRCPY, 0)
  58 IMPL (STRCPY, 1)
  59
  60 CHAR *
  61 SIMPLE_STRCPY (CHAR *dst, const CHAR *src)
  62 {
  63   CHAR *ret = dst;
  64   while ((*dst++ = *src++) != '\0');
  65   return ret;
  66 }
  67 #endif
  68
  69 typedef CHAR *(*proto_t) (CHAR *, const CHAR *);
  70
  71 static void
  72 do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,
  73              size_t len __attribute__((unused)))
  74 {
  75   if (CALL (impl, dst, src) != STRCPY_RESULT (dst, len))
  76     {
  77       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  78              CALL (impl, dst, src), STRCPY_RESULT (dst, len));
  79       ret = 1;
  80       return;
  81     }
  82
  83   if (STRCMP (dst, src) != 0)
  84     {
  85       error (0, 0,
  86              "Wrong result in function %s dst \"%" sfmt "\" src \"%" sfmt "\"",
  87              impl->name, dst, src);
  88       ret = 1;
  89       return;
  90     }
  91
  92   if (HP_TIMING_AVAIL)
  93     {
  94       hp_timing_t start __attribute ((unused));
  95       hp_timing_t stop __attribute ((unused));;
  96       hp_timing_t best_time = ~ (hp_timing_t) 0;
  97       size_t i;
  98
  99       for (i = 0; i < 32; ++i)
 100         {
 101           HP_TIMING_NOW (start);
 102           CALL (impl, dst, src);
 103           HP_TIMING_NOW (stop);
 104           HP_TIMING_BEST (best_time, start, stop);
 105         }
 106
 107       printf ("\t%zd", (size_t) best_time);
 108     }
 109 }
 110
 111 static void
 112 do_test (size_t align1, size_t align2, size_t len, int max_char)
 113 {
 114   size_t i;
 115   CHAR *s1, *s2;
 116 /* For wcscpy: align1 and align2 here mean alignment not in bytes,
 117    but in wchar_ts, in bytes it will equal to align * (sizeof (wchar_t))
 118    len for wcschr here isn't in bytes but it's number of wchar_t symbols.  */
 119   align1 &= 7;
 120   if ((align1 + len) * sizeof(CHAR) >= page_size)
 121     return;
 122
 123   align2 &= 7;
 124   if ((align2 + len) * sizeof(CHAR) >= page_size)
 125     return;
 126
 127   s1 = (CHAR *) (buf1) + align1;
 128   s2 = (CHAR *) (buf2) + align2;
 129
 130   for (i = 0; i < len; i++)
 131     s1[i] = 32 + 23 * i % (max_char - 32);
 132   s1[len] = 0;
 133
 134   if (HP_TIMING_AVAIL)
 135     printf ("Length %4zd, alignments in bytes %2zd/%2zd:", len, align1 * sizeof(CHAR), align2 * sizeof(CHAR));
 136
 137   FOR_EACH_IMPL (impl, 0)
 138     do_one_test (impl, s2, s1, len);
 139
 140   if (HP_TIMING_AVAIL)
 141     putchar ('\n');
 142 }
 143
 144 static void
 145 do_random_tests (void)
 146 {
 147   size_t i, j, n, align1, align2, len;
 148   UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 512;
 149   UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 512;
 150   UCHAR *res;
 151
 152   for (n = 0; n < ITERATIONS; n++)
 153     {
 154       /* For wcsrchr: align1 and align2 here mean align not in bytes,
 155          but in wchar_ts, in bytes it will equal to align * (sizeof
 156          (wchar_t)).  For strrchr we need to check all alignments from
 157          0 to 63 since some assembly implementations have separate
 158          prolog for alignments more 48. */
 159
 160       align1 = random () & (63 / sizeof(CHAR));
 161       if (random () & 1)
 162         align2 = random () & (63 / sizeof(CHAR));
 163       else
 164         align2 = align1 + (random () & 24);
 165       len = random () & 511;
 166       j = align1;
 167       if (align2 > j)
 168         j = align2;
 169       if (len + j >= 511)
 170         len = 510 - j - (random () & 7);
 171       j = len + align1 + 64;
 172       if (j > 512)
 173         j = 512;
 174       for (i = 0; i < j; i++)
 175         {
 176           if (i == len + align1)
 177             p1[i] = 0;
 178           else
 179             {
 180               p1[i] = random () & BIG_CHAR;
 181               if (i >= align1 && i < len + align1 && !p1[i])
 182                 p1[i] = (random () & SMALL_CHAR) + 3;
 183             }
 184         }
 185
 186       FOR_EACH_IMPL (impl, 1)
 187         {
 188           MEMSET (p2 - 64, '\1', 512 + 64);
 189           res = (UCHAR *) CALL (impl, (CHAR *) (p2 + align2), (CHAR *) (p1 + align1));
 190           if (res != STRCPY_RESULT (p2 + align2, len))
 191             {
 192               error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %zd, %zd) %p != %p",
 193                      n, impl->name, align1, align2, len, res,
 194                      STRCPY_RESULT (p2 + align2, len));
 195               ret = 1;
 196             }
 197           for (j = 0; j < align2 + 64; ++j)
 198             {
 199               if (p2[j - 64] != '\1')
 200                 {
 201                   error (0, 0, "Iteration %zd - garbage before, %s (%zd, %zd, %zd)",
 202                          n, impl->name, align1, align2, len);
 203                   ret = 1;
 204                   break;
 205                 }
 206             }
 207           for (j = align2 + len + 1; j < 512; ++j)
 208             {
 209               if (p2[j] != '\1')
 210                 {
 211                   error (0, 0, "Iteration %zd - garbage after, %s (%zd, %zd, %zd)",
 212                          n, impl->name, align1, align2, len);
 213                   ret = 1;
 214                   break;
 215                 }
 216             }
 217           if (MEMCMP (p1 + align1, p2 + align2, len + 1))
 218             {
 219               error (0, 0, "Iteration %zd - different strings, %s (%zd, %zd, %zd)",
 220                      n, impl->name, align1, align2, len);
 221               ret = 1;
 222             }
 223         }
 224     }
 225 }
 226
 227 int
 228 test_main (void)
 229 {
 230   size_t i;
 231
 232   test_init ();
 233
 234   printf ("%23s", "");
 235   FOR_EACH_IMPL (impl, 0)
 236     printf ("\t%s", impl->name);
 237   putchar ('\n');
 238
 239   for (i = 0; i < 16; ++i)
 240     {
 241       do_test (0, 0, i, SMALL_CHAR);
 242       do_test (0, 0, i, BIG_CHAR);
 243       do_test (0, i, i, SMALL_CHAR);
 244       do_test (i, 0, i, BIG_CHAR);
 245     }
 246
 247   for (i = 1; i < 8; ++i)
 248     {
 249       do_test (0, 0, 8 << i, SMALL_CHAR);
 250       do_test (8 - i, 2 * i, 8 << i, SMALL_CHAR);
 251     }
 252
 253   for (i = 1; i < 8; ++i)
 254     {
 255       do_test (i, 2 * i, 8 << i, SMALL_CHAR);
 256       do_test (2 * i, i, 8 << i, BIG_CHAR);
 257       do_test (i, i, 8 << i, SMALL_CHAR);
 258       do_test (i, i, 8 << i, BIG_CHAR);
 259     }
 260
 261   do_random_tests ();
 262   return ret;
 263 }
 264
 265 #include "../test-skeleton.c"