string/test-strpbrk.c

   1 /* Test and measure strpbrk functions.
   2    Copyright (C) 1999-2013 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 # define TEST_NAME "strpbrk"
  25 # include "test-string.h"
  26
  27 typedef char *(*proto_t) (const char *, const char *);
  28 char *simple_strpbrk (const char *, const char *);
  29 char *stupid_strpbrk (const char *, const char *);
  30
  31 IMPL (stupid_strpbrk, 0)
  32 IMPL (simple_strpbrk, 0)
  33 IMPL (strpbrk, 1)
  34
  35 char *
  36 simple_strpbrk (const char *s, const char *rej)
  37 {
  38   const char *r;
  39   char c;
  40
  41   while ((c = *s++) != '\0')
  42     for (r = rej; *r != '\0'; ++r)
  43       if (*r == c)
  44         return (char *) s - 1;
  45   return NULL;
  46 }
  47
  48 char *
  49 stupid_strpbrk (const char *s, const char *rej)
  50 {
  51   size_t ns = strlen (s), nrej = strlen (rej);
  52   size_t i, j;
  53
  54   for (i = 0; i < ns; ++i)
  55     for (j = 0; j < nrej; ++j)
  56       if (s[i] == rej[j])
  57         return (char *) s + i;
  58   return NULL;
  59 }
  60 #endif
  61
  62 static void
  63 do_one_test (impl_t *impl, const char *s, const char *rej, RES_TYPE exp_res)
  64 {
  65   RES_TYPE res = CALL (impl, s, rej);
  66   if (res != exp_res)
  67     {
  68       error (0, 0, "Wrong result in function %s %p %p", impl->name,
  69              (void *) res, (void *) exp_res);
  70       ret = 1;
  71       return;
  72     }
  73
  74   if (HP_TIMING_AVAIL)
  75     {
  76       hp_timing_t start __attribute ((unused));
  77       hp_timing_t stop __attribute ((unused));
  78       hp_timing_t best_time = ~ (hp_timing_t) 0;
  79       size_t i;
  80
  81       for (i = 0; i < 32; ++i)
  82         {
  83           HP_TIMING_NOW (start);
  84           CALL (impl, s, rej);
  85           HP_TIMING_NOW (stop);
  86           HP_TIMING_BEST (best_time, start, stop);
  87         }
  88
  89       printf ("\t%zd", (size_t) best_time);
  90     }
  91 }
  92
  93 static void
  94 do_test (size_t align, size_t pos, size_t len)
  95 {
  96   size_t i;
  97   int c;
  98   RES_TYPE result;
  99   char *rej, *s;
 100
 101   align &= 7;
 102   if (align + pos + 10 >= page_size || len > 240)
 103     return;
 104
 105   rej = (char *) (buf2 + (random () & 255));
 106   s = (char *) (buf1 + align);
 107
 108   for (i = 0; i < len; ++i)
 109     {
 110       rej[i] = random () & 255;
 111       if (!rej[i])
 112         rej[i] = random () & 255;
 113       if (!rej[i])
 114         rej[i] = 1 + (random () & 127);
 115     }
 116   rej[len] = '\0';
 117   for (c = 1; c <= 255; ++c)
 118     if (strchr (rej, c) == NULL)
 119       break;
 120
 121   for (i = 0; i < pos; ++i)
 122     {
 123       s[i] = random () & 255;
 124       if (strchr (rej, s[i]))
 125         {
 126           s[i] = random () & 255;
 127           if (strchr (rej, s[i]))
 128             s[i] = c;
 129         }
 130     }
 131   s[pos] = rej[random () % (len + 1)];
 132   if (s[pos])
 133     {
 134       for (i = pos + 1; i < pos + 10; ++i)
 135         s[i] = random () & 255;
 136       s[i] = '\0';
 137     }
 138   result = STRPBRK_RESULT (s, pos);
 139
 140   if (HP_TIMING_AVAIL)
 141     printf ("Length %4zd, alignment %2zd, rej len %2zd:", pos, align, len);
 142
 143   FOR_EACH_IMPL (impl, 0)
 144     do_one_test (impl, s, rej, result);
 145
 146   if (HP_TIMING_AVAIL)
 147     putchar ('\n');
 148 }
 149
 150 static void
 151 do_random_tests (void)
 152 {
 153   size_t i, j, n, align, pos, len, rlen;
 154   RES_TYPE result;
 155   int c;
 156   unsigned char *p = buf1 + page_size - 512;
 157   unsigned char *rej;
 158
 159   for (n = 0; n < ITERATIONS; n++)
 160     {
 161       align = random () & 15;
 162       pos = random () & 511;
 163       if (pos + align >= 511)
 164         pos = 510 - align - (random () & 7);
 165       len = random () & 511;
 166       if (pos >= len && (random () & 1))
 167         len = pos + 1 + (random () & 7);
 168       if (len + align >= 512)
 169         len = 511 - align - (random () & 7);
 170       if (random () & 1)
 171         rlen = random () & 63;
 172       else
 173         rlen = random () & 15;
 174       rej = buf2 + page_size - rlen - 1 - (random () & 7);
 175       for (i = 0; i < rlen; ++i)
 176         {
 177           rej[i] = random () & 255;
 178           if (!rej[i])
 179             rej[i] = random () & 255;
 180           if (!rej[i])
 181             rej[i] = 1 + (random () & 127);
 182         }
 183       rej[i] = '\0';
 184       for (c = 1; c <= 255; ++c)
 185         if (strchr ((char *) rej, c) == NULL)
 186           break;
 187       j = (pos > len ? pos : len) + align + 64;
 188       if (j > 512)
 189         j = 512;
 190
 191       for (i = 0; i < j; i++)
 192         {
 193           if (i == len + align)
 194             p[i] = '\0';
 195           else if (i == pos + align)
 196             p[i] = rej[random () % (rlen + 1)];
 197           else if (i < align || i > pos + align)
 198             p[i] = random () & 255;
 199           else
 200             {
 201               p[i] = random () & 255;
 202               if (strchr ((char *) rej, p[i]))
 203                 {
 204                   p[i] = random () & 255;
 205                   if (strchr ((char *) rej, p[i]))
 206                     p[i] = c;
 207                 }
 208             }
 209         }
 210
 211       result = STRPBRK_RESULT ((char *) (p + align), pos < len ? pos : len);
 212
 213       FOR_EACH_IMPL (impl, 1)
 214         if (CALL (impl, (char *) (p + align), (char *) rej) != result)
 215           {
 216             error (0, 0, "Iteration %zd - wrong result in function %s (%zd, %p, %zd, %zd, %zd) %p != %p",
 217                    n, impl->name, align, rej, rlen, pos, len,
 218                    (void *) CALL (impl, (char *) (p + align), (char *) rej),
 219                    (void *) result);
 220             ret = 1;
 221           }
 222     }
 223 }
 224
 225 int
 226 test_main (void)
 227 {
 228   size_t i;
 229
 230   test_init ();
 231
 232   printf ("%32s", "");
 233   FOR_EACH_IMPL (impl, 0)
 234     printf ("\t%s", impl->name);
 235   putchar ('\n');
 236
 237   for (i = 0; i < 32; ++i)
 238     {
 239       do_test (0, 512, i);
 240       do_test (i, 512, i);
 241     }
 242
 243   for (i = 1; i < 8; ++i)
 244     {
 245       do_test (0, 16 << i, 4);
 246       do_test (i, 16 << i, 4);
 247     }
 248
 249   for (i = 1; i < 8; ++i)
 250     do_test (i, 64, 10);
 251
 252   for (i = 0; i < 64; ++i)
 253     do_test (0, i, 6);
 254
 255   do_random_tests ();
 256   return ret;
 257 }
 258
 259 #include "../test-skeleton.c"