1 /* Test system cache line sizes.
2 Copyright (C) 2021 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 #include <stdio.h>
20 #include <stdlib.h>
21 #include <unistd.h>
22 #include <array_length.h>
23
24 static struct
25 {
26 const char *name;
27 int _SC_val;
28 } sc_options[] =
29 {
30 #define N(name) { "_SC_"#name, _SC_##name }
31 N (LEVEL1_ICACHE_LINESIZE),
32 N (LEVEL1_DCACHE_LINESIZE),
33 N (LEVEL2_CACHE_LINESIZE)
34 };
35
36 static int
do_test(void)37 do_test (void)
38 {
39 int result = EXIT_SUCCESS;
40
41 for (int i = 0; i < array_length (sc_options); ++i)
42 {
43 long int scret = sysconf (sc_options[i]._SC_val);
44 if (scret < 0)
45 {
46 printf ("sysconf (%s) returned < 0 (%ld)\n",
47 sc_options[i].name, scret);
48 result = EXIT_FAILURE;
49 }
50 else
51 printf ("sysconf (%s): %ld\n", sc_options[i].name, scret);
52 }
53
54 return result;
55 }
56
57 #include <support/test-driver.c>
58