string/test-strpbrk.c

   1 /* Test and measure strpbrk 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.
   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, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #ifndef STRPBRK_RESULT
  21 # define STRPBRK_RESULT(s, pos) ((s)[(pos)] ? (s) + (pos) : NULL)
  22 # define RES_TYPE char *
  23 # define TEST_MAIN
  24 # include "test-string.h"
  25
  26 typedef char *(*proto_t) (const char *, const char *);
  27 char *simple_strpbrk (const char *, const char *);
  28 char *stupid_strpbrk (const char *, const char *);
  29
  30 IMPL (stupid_strpbrk, 0)
  31 IMPL (simple_strpbrk, 0)
  32 IMPL (strpbrk, 1)
  33
  34 char *
  35 simple_strpbrk (const char *s, const char *rej)
  36 {
  37   const char *r;
  38   char c;
  39
  40   while ((c = *s++) != '\0')
  41     for (r = rej; *r != '\0'; ++r)
  42       if (*r == c)
  43         return (char *) s - 1;
  44   return NULL;
  45 }
  46
  47 char *
  48 stupid_strpbrk (const char *s, const char *rej)
  49 {
  50   size_t ns = strlen (s), nrej = strlen (rej);
  51   size_t i, j;
  52
  53   for (i = 0; i < ns; ++i)
  54     for (j = 0; j < nrej; ++j)
  55       if (s[i] == rej[j])
  56         return (char *) s + i;
  57   return NULL;
  58 }
  59 #endif
  60
  61 static void
  62 do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
  63 {
  64   RES_TYPE res = CALL (impl, s, rej);
  65   if (res != exp_res)
  66     {
  67       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  68              (void *) res, (void *) exp_res);
  69       ret = 1;
  70       return;
  71     }
  72
  73   if (HP_TIMING_AVAIL)
  74     {
  75       hp_timing_t start __attribute ((unused));
  76       hp_timing_t stop __attribute ((unused));
  77       hp_timing_t best_time = ~ (hp_timing_t) 0;
  78       size_t i;
  79
  80       for (i = 0; i < 32; ++i)
  81         {
  82           HP_TIMING_NOW (start);
  83           CALL (impl, s, rej);
  84           HP_TIMING_NOW (stop);
  85           HP_TIMING_BEST (best_time, start, stop);
  86         }
  87
  88       printf ("\t%zd", (size_t) best_time);
  89     }
  90 }
  91
  92 static void
  93 do_test (size_t align, size_t pos, size_t len)
  94 {
  95   size_t i;
  96   int c;
  97   RES_TYPE result;
  98   char *rej, *s;
  99
 100   align &= 7;
 101   if (align + pos + 10 >= page_size || len > 240)
 102     return;
 103
 104   rej = (char *) (buf2 + (random () & 255));
 105   s = (char *) (buf1 + align);
 106
 107   for (i = 0; i < len; ++i)
 108     {
 109       rej[i] = random () & 255;
 110       if (!rej[i])
 111         rej[i] = random () & 255;
 112       if (!rej[i])
 113         rej[i] = 1 + (random () & 127);
 114     }
 115   rej[len] = '\0';
 116   for (c = 1; c <= 255; ++c)
 117     if (strchr (rej, c) == NULL)
 118       break;
 119
 120   for (i = 0; i < pos; ++i)
 121     {
 122       s[i] = random () & 255;
 123       if (strchr (rej, s[i]))
 124         {
 125           s[i] = random () & 255;
 126           if (strchr (rej, s[i]))
 127             s[i] = c;
 128         }
 129     }
 130   s[pos] = rej[random () % (len + 1)];
 131   if (s[pos])
 132     {
 133       for (i = pos + 1; i < pos + 10; ++i)
 134         s[i] = random () & 255;
 135       s[i] = '\0';
 136     }
 137   result = STRPBRK_RESULT (s, pos);
 138
 139   if (HP_TIMING_AVAIL)
 140     printf ("Length %4zd, alignment %2zd, rej len %2zd:", pos, align, len);
 141
 142   FOR_EACH_IMPL (impl, 0)
 143     do_one_test (impl, s, rej, result);
 144
 145   if (HP_TIMING_AVAIL)
 146     putchar ('\n');
 147 }
 148
 149 static void
 150 do_random_tests (void)
 151 {
 152   size_t i, j, n, align, pos, len, rlen;
 153   RES_TYPE result;
 154   int c;
 155   unsigned char *p = buf1 + page_size - 512;
 156   unsigned char *rej;
 157
 158   for (n = 0; n < ITERATIONS; n++)
 159     {
 160       align = random () & 15;
 161       pos = random () & 511;
 162       if (pos + align >= 511)
 163         pos = 510 - align - (random () & 7);
 164       len = random () & 511;
 165       if (pos >= len && (random () & 1))
 166         len = pos + 1 + (random () & 7);
 167       if (len + align >= 512)
 168         len = 511 - align - (random () & 7);
 169       if (random () & 1)
 170         rlen = random () & 63;
 171       else
 172         rlen = random () & 15;
 173       rej = buf2 + page_size - rlen - 1 - (random () & 7);
 174       for (i = 0; i < rlen; ++i)
 175         {
 176           rej[i] = random () & 255;
 177           if (!rej[i])
 178             rej[i] = random () & 255;
 179           if (!rej[i])
 180             rej[i] = 1 + (random () & 127);
 181         }
 182       rej[i] = '\0';
 183       for (c = 1; c <= 255; ++c)
 184         if (strchr ((char *) rej, c) == NULL)
 185           break;
 186       j = (pos > len ? pos : len) + align + 64;
 187       if (j > 512)
 188         j = 512;
 189
 190       for (i = 0; i < j; i++)
 191         {
 192           if (i == len + align)
 193             p[i] = '\0';
 194           else if (i == pos + align)
 195             p[i] = rej[random () % (rlen + 1)];
 196           else if (i < align || i > pos + align)
 197             p[i] = random () & 255;
 198           else
 199             {
 200               p[i] = random () & 255;
 201               if (strchr ((char *) rej, p[i]))
 202                 {
 203                   p[i] = random () & 255;
 204                   if (strchr ((char *) rej, p[i]))
 205                     p[i] = c;
 206                 }
 207             }
 208         }
 209
 210       result = STRPBRK_RESULT ((char *) (p + align), pos < len ? pos : len);
 211
 212       FOR_EACH_IMPL (impl, 1)
 213         if (CALL (impl, (char *) (p + align), (char *) rej) != result)
 214           {
 215             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %p != %p",
 216                    n, impl->name, align, rej, rlen, pos, len,
 217                    (void *) CALL (impl, (char *) (p + align), (char *) rej),
 218                    (void *) result);
 219             ret = 1;
 220           }
 221     }
 222 }
 223
 224 int
 225 test_main (void)
 226 {
 227   size_t i;
 228
 229   test_init ();
 230
 231   printf ("%32s", "");
 232   FOR_EACH_IMPL (impl, 0)
 233     printf ("\t%s", impl->name);
 234   putchar ('\n');
 235
 236   for (i = 0; i < 32; ++i)
 237     {
 238       do_test (0, 512, i);
 239       do_test (i, 512, i);
 240     }
 241
 242   for (i = 1; i < 8; ++i)
 243     {
 244       do_test (0, 16 << i, 4);
 245       do_test (i, 16 << i, 4);
 246     }
 247
 248   for (i = 1; i < 8; ++i)
 249     do_test (i, 64, 10);
 250
 251   for (i = 0; i < 64; ++i)
 252     do_test (0, i, 6);
 253
 254   do_random_tests ();
 255   return ret;
 256 }
 257
 258 #include "../test-skeleton.c"