1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
|
/* Check use of sysconf() for cache geometries.
Copyright (C) 2017-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* Test use of sysconf() to get cache sizes, cache set associativity
and cache line sizes. */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <support/test-driver.h>
#define call_str(f, name) f(name, #name)
long
do_sysconf (int name, const char * str)
{
int rc = 0;
long val;
errno = 0;
val = sysconf (name);
if (val == -1) {
if (errno != EINVAL) {
printf("error: sysconf(%s): unexpected errno(%d)\n", str, errno);
exit (1);
}
printf ("info: sysconf(%s): unsupported\n", str);
rc = 1;
} else
printf ("sysconf(%s) = 0x%lx (%ld)\n", str, val, val);
return rc;
}
static int
do_test (void)
{
int rc = 0;
rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_SIZE);
rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_ASSOC);
rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_LINESIZE);
rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_SIZE);
rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_ASSOC);
rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_LINESIZE);
rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_SIZE);
rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_ASSOC);
rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_LINESIZE);
rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_SIZE);
rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_ASSOC);
rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_LINESIZE);
if (rc)
return EXIT_UNSUPPORTED;
return 0;
}
#include <support/test-driver.c>
|
