tests/bench-digest.h

   1 /*
   2  * Copyright (C) 2018-2024 Free Software Foundation, Inc.
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation, either version 3 of the License, or
   7  * (at your option) any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19
  20 #include "bench.h"
  21
  22 int
  23 main (int argc, char *argv[])
  24 {
  25   if (argc != 3)
  26     {
  27       fprintf (stderr, "Usage: %s SIZE REPETITIONS\n", argv[0]);
  28       exit (1);
  29     }
  30
  31   size_t size = atol (argv[1]);
  32   int repeat = atoi (argv[2]);
  33
  34   char *memblock = (char *) malloc (size);
  35   if (!memblock)
  36     {
  37       fprintf (stderr, "%s: memory exhausted\n", argv[0]);
  38       return 1;
  39     }
  40
  41   /* Fill the memory block.  */
  42   {
  43     size_t i;
  44     for (i = 0; i < size; i++)
  45       memblock[i] =
  46         (unsigned char) (((i * (i-1) * (i-5)) >> 6) + (i % 499) + (i % 101));
  47   }
  48
  49   struct timings_state ts;
  50   timing_start (&ts);
  51
  52   int count;
  53   for (count = 0; count < repeat; count++)
  54     {
  55       char digest[64];
  56       FUNC (memblock, size, digest);
  57     }
  58
  59   timing_end (&ts);
  60   timing_output (&ts);
  61
  62   return 0;
  63 }