2 This file is part of GNUnet.
3 Copyright (C) 2012 GNUnet e.V.
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
18 SPDX-License-Identifier: AGPL3.0-or-later
22 * @author Christian Grothoff
23 * @file util/perf_malloc.c
24 * @brief measure performance of allocation functions
27 #include "gnunet_util_lib.h"
36 for (size_t i = 1; i < 1024 * 1024; i += 1024)
39 GNUNET_free (GNUNET_malloc (i));
51 for (size_t i = 10; i < 1024 * 1024 / 5; i += 1024)
56 ptr = GNUNET_malloc (i);
58 ptr = GNUNET_realloc (ptr, i + 5);
59 for (size_t j=0;j<i;j++)
60 GNUNET_assert (1 == ptr[j]);
61 memset (ptr, 6, i + 5);
62 ptr = GNUNET_realloc (ptr, i - 5);
63 for (size_t j=0;j<i-5;j++)
64 GNUNET_assert (6 == ptr[j]);
72 main (int argc, char *argv[])
74 struct GNUNET_TIME_Absolute start;
77 start = GNUNET_TIME_absolute_get ();
79 printf ("Malloc perf took %s\n",
80 GNUNET_STRINGS_relative_time_to_string (
81 GNUNET_TIME_absolute_get_duration (start),
83 GAUGER ("UTIL", "Allocation",
85 + GNUNET_TIME_absolute_get_duration
86 (start).rel_value_us / 1000LL), "kb/ms");
87 start = GNUNET_TIME_absolute_get ();
89 printf ("Realloc perf took %s\n",
90 GNUNET_STRINGS_relative_time_to_string (
91 GNUNET_TIME_absolute_get_duration (start),
97 /* end of perf_malloc.c */