1 | /* Check use of sysconf() for cache geometries. |
2 | Copyright (C) 2017-2022 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 | |
31 | long |
32 | do_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 | |
50 | static int |
51 | do_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 | |