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/*
     This file is part of GNUnet.
     Copyright (C) 2011-2013 GNUnet e.V.

     GNUnet is free software: you can redistribute it and/or modify it
     under the terms of the GNU Affero General Public License as published
     by the Free Software Foundation, either version 3 of the License,
     or (at your option) any later version.

     GNUnet is distributed in the hope that it will be useful, but
     WITHOUT ANY WARRANTY; without even the implied warranty of
     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
     Affero General Public License for more details.

     You should have received a copy of the GNU Affero General Public License
     along with this program.  If not, see <http://www.gnu.org/licenses/>.

     SPDX-License-Identifier: AGPL3.0-or-later
 */
/**
 * @file util/test_speedup.c
 * @brief testcase for speedup.c
 */
#include "platform.h"
#include "gnunet_util_lib.h"

/**
 * Start time of the testcase
 */
static struct GNUNET_TIME_Absolute start;

/**
 * End-time of the testcase (affected by speed-up)
 */
static struct GNUNET_TIME_Absolute end;

/**
 * Number of cycles we have spent in 'run'.
 */
static unsigned int cycles;


/**
 * Main task that is scheduled with the speed-up.
 *
 * @param cls NULL
 * @param tc scheduler context, unused
 */
static void
run (void *cls)
{
  cycles++;
  fprintf (stderr, "..%u", cycles);
  if (cycles <= 5)
  {
    GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_UNIT_SECONDS,
                                  &run,
                                  NULL);
    return;
  }
  end = GNUNET_TIME_absolute_get ();
  fprintf (stderr, "\n");
  fflush (stdout);
}


/**
 *
 */
static void
check (void *cls,
       char *const *args,
       const char *cfgfile,
       const struct GNUNET_CONFIGURATION_Handle *cfg)
{
  fprintf (stderr, "0");
  fflush (stdout);
  GNUNET_SCHEDULER_add_now (&run, NULL);
}


int
main (int argc, char *argv[])
{
  static char *const argvn[] = {
    "test-speedup",
    "-c", "test_speedup_data.conf",
    NULL
  };
  static struct GNUNET_GETOPT_CommandLineOption options[] = {
    GNUNET_GETOPT_OPTION_END
  };
  time_t start_real;
  time_t end_real;
  struct GNUNET_TIME_Relative delta;

  start_real = time (NULL);
  start = GNUNET_TIME_absolute_get ();
  GNUNET_PROGRAM_run ((sizeof(argvn) / sizeof(char *)) - 1, argvn,
                      "test-speedup",
                      "nohelp", options, &check, NULL);

  end_real = time (NULL);
  delta = GNUNET_TIME_absolute_get_difference (start, end);

  if (delta.rel_value_us > ((end_real - start_real) * 1500LL * 1000LL))
  {
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Execution time in GNUnet time: %s\n",
                GNUNET_STRINGS_relative_time_to_string (delta, GNUNET_YES));
    GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
                "Execution time in system time: %llu ms\n",
                (unsigned long long) ((end_real - start_real) * 1000LL));
    return 0;
  }
  GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
              "Execution time in GNUnet time: %s\n",
              GNUNET_STRINGS_relative_time_to_string (delta, GNUNET_YES));
  GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
              "Execution time in system time: %llu ms\n",
              (unsigned long long) ((end_real - start_real) * 1000LL));
  return 1;
}


/* end of test_speedup.c */