gnunet/src/util/test_common_logging_dummy.c

/*
     This file is part of GNUnet.
     Copyright (C) 2008-2013 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_common_logging_dummy.c
 * @brief dummy labrat for the testcase for the logging module (runtime
 * log level adjustment)
 * @author LRN
 */
#include "platform.h"
#undef GNUNET_EXTRA_LOGGING
#define GNUNET_EXTRA_LOGGING GNUNET_YES

#include "gnunet_util_lib.h"

/**
 * Artificial delay attached to each log call that is not skipped out.
 * This must be long enough for us to not to mistake skipped log call
 * on a slow machine for a non-skipped one.
 */
#define OUTPUT_DELAY \
  GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MICROSECONDS, 1000)

static void
my_log (void *ctx,
        enum GNUNET_ErrorType kind,
        const char *component,
        const char *date,
        const char *msg)
{
  (void) ctx;
  (void) kind;
  (void) component;
  (void) date;
  if (strncmp ("test-common-logging-dummy", component, 25) != 0)
    return;
  fprintf (stdout, "%s", msg);
  fflush (stdout);
}


#if ! defined(GNUNET_CULL_LOGGING)
static int
expensive_func ()
{
  return GNUNET_NETWORK_socket_select (NULL, NULL, NULL, OUTPUT_DELAY);
}


#endif


#define pr(kind, lvl)                                                         \
  {                                                                           \
    struct GNUNET_TIME_Absolute t1, t2;                                       \
    t1 = GNUNET_TIME_absolute_get ();                                         \
    GNUNET_log (kind, "L%s %d\n", lvl, expensive_func ());                    \
    t2 = GNUNET_TIME_absolute_get ();                                         \
    printf ("1%s %llu\n",                                                     \
            lvl,                                                              \
            (unsigned long long) GNUNET_TIME_absolute_get_difference (t1, t2) \
            .rel_value_us);                                                 \
  }

#define pr2(kind, lvl)                                                        \
  {                                                                           \
    struct GNUNET_TIME_Absolute t1, t2;                                       \
    t1 = GNUNET_TIME_absolute_get ();                                         \
    GNUNET_log (kind, "L%s %d\n", lvl, expensive_func ());                    \
    t2 = GNUNET_TIME_absolute_get ();                                         \
    printf ("2%s %llu\n",                                                     \
            lvl,                                                              \
            (unsigned long long) GNUNET_TIME_absolute_get_difference (t1, t2) \
            .rel_value_us);                                                 \
  }


int
main (int argc, char *argv[])
{
  (void) argc;
  (void) argv;
  /* We set up logging with NULL level - will be overridden by
   * GNUNET_LOG or GNUNET_FORCE_LOG at runtime.
   */
  GNUNET_log_setup ("test-common-logging-dummy", NULL, "/dev/null");
  GNUNET_logger_add (&my_log, NULL);
  pr (GNUNET_ERROR_TYPE_ERROR, "ERROR");
  pr (GNUNET_ERROR_TYPE_WARNING, "WARNING");
  pr (GNUNET_ERROR_TYPE_INFO, "INFO");
  pr (GNUNET_ERROR_TYPE_DEBUG, "DEBUG");

  /* We set up logging with WARNING level - will onle be overridden by
   * GNUNET_FORCE_LOG at runtime.
   */
  GNUNET_log_setup ("test-common-logging-dummy", "WARNING", "/dev/null");
  pr2 (GNUNET_ERROR_TYPE_ERROR, "ERROR");
  pr2 (GNUNET_ERROR_TYPE_WARNING, "WARNING");
  pr2 (GNUNET_ERROR_TYPE_INFO, "INFO");
  pr2 (GNUNET_ERROR_TYPE_DEBUG, "DEBUG");
  return 0;
} /* end of main */


/* end of test_common_logging_dummy.c */