1/* Check use of sysconf() for cache geometries.
2 Copyright (C) 2017-2024 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/* Test use of sysconf() to get cache sizes, cache set associativity
20 and cache line sizes. */
21
22#include <errno.h>
23#include <stdio.h>
24#include <stdlib.h>
25#include <unistd.h>
26
27#include <support/test-driver.h>
28
29#define call_str(f, name) f(name, #name)
30
31long
32do_sysconf (int name, const char * str)
33{
34 int rc = 0;
35 long val;
36 errno = 0;
37 val = sysconf (name: name);
38 if (val == -1) {
39 if (errno != EINVAL) {
40 printf(format: "error: sysconf(%s): unexpected errno(%d)\n", str, errno);
41 exit (1);
42 }
43 printf (format: "info: sysconf(%s): unsupported\n", str);
44 rc = 1;
45 } else
46 printf (format: "sysconf(%s) = 0x%lx (%ld)\n", str, val, val);
47 return rc;
48}
49
50static int
51do_test (void)
52{
53 int rc = 0;
54
55 rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_SIZE);
56 rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_ASSOC);
57 rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_LINESIZE);
58 rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_SIZE);
59 rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_ASSOC);
60 rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_LINESIZE);
61 rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_SIZE);
62 rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_ASSOC);
63 rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_LINESIZE);
64 rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_SIZE);
65 rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_ASSOC);
66 rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_LINESIZE);
67
68 if (rc)
69 return EXIT_UNSUPPORTED;
70 return 0;
71}
72
73#include <support/test-driver.c>
74

source code of glibc/sysdeps/unix/sysv/linux/powerpc/test-powerpc-linux-sysconf.c