string/test-memcpy-large.c

   1 /* Test and measure memcpy functions.
   2    Copyright (C) 1999-2024 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 /* test-memcpy-support.h contains all test functions.  */
  20 #include "test-memcpy-support.h"
  21
  22 static void
  23 do_random_large_tests (void)
  24 {
  25   size_t i, align1, align2, size;
  26   for (i = 0; i < 32; ++i)
  27     {
  28       align1 = random ();
  29       align2 = random ();
  30       size = (random () % 0x1000000) + 0x200000;
  31       do_test1 (align1, align2, size);
  32     }
  33
  34   for (i = 0; i < 128; ++i)
  35     {
  36       align1 = random ();
  37       align2 = random ();
  38       size = (random () % 32768) + 4096;
  39       do_test1 (align1, align2, size);
  40     }
  41 }
  42
  43 int
  44 test_main (void)
  45 {
  46   size_t i, j;
  47
  48   test_init ();
  49
  50   printf ("%23s", "");
  51   FOR_EACH_IMPL (impl, 0)
  52   printf ("\t%s", impl->name);
  53   putchar ('\n');
  54
  55   do_test (0, 0, getpagesize () - 1);
  56
  57   for (i = 0x200000; i <= 0x2000000; i += i)
  58     {
  59       for (j = 64; j <= 1024; j <<= 1)
  60         {
  61           do_test1 (0, j, i);
  62           do_test1 (4095, j, i);
  63           do_test1 (4096 - j, 0, i);
  64
  65           do_test1 (0, j - 1, i);
  66           do_test1 (4095, j - 1, i);
  67           do_test1 (4096 - j - 1, 0, i);
  68
  69           do_test1 (0, j + 1, i);
  70           do_test1 (4095, j + 1, i);
  71           do_test1 (4096 - j, 1, i);
  72
  73           do_test1 (0, j, i + 1);
  74           do_test1 (4095, j, i + 1);
  75           do_test1 (4096 - j, 0, i + 1);
  76
  77           do_test1 (0, j - 1, i + 1);
  78           do_test1 (4095, j - 1, i + 1);
  79           do_test1 (4096 - j - 1, 0, i + 1);
  80
  81           do_test1 (0, j + 1, i + 1);
  82           do_test1 (4095, j + 1, i + 1);
  83           do_test1 (4096 - j, 1, i + 1);
  84
  85           do_test1 (0, j, i - 1);
  86           do_test1 (4095, j, i - 1);
  87           do_test1 (4096 - j, 0, i - 1);
  88
  89           do_test1 (0, j - 1, i - 1);
  90           do_test1 (4095, j - 1, i - 1);
  91           do_test1 (4096 - j - 1, 0, i - 1);
  92
  93           do_test1 (0, j + 1, i - 1);
  94           do_test1 (4095, j + 1, i - 1);
  95           do_test1 (4096 - j, 1, i - 1);
  96         }
  97     }
  98
  99   do_random_large_tests ();
 100   return ret;
 101 }
 102
 103 #include <support/test-driver.c>