| 1 | /* Test system cache line sizes. |
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| 2 | Copyright (C) 2021-2024 Free Software Foundation, Inc. |
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| 3 | This file is part of the GNU C Library. |
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| 4 | |
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| 5 | The GNU C Library is free software; you can redistribute it and/or |
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| 6 | modify it under the terms of the GNU Lesser General Public |
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| 7 | License as published by the Free Software Foundation; either |
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| 8 | version 2.1 of the License, or (at your option) any later version. |
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| 9 | |
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| 10 | The GNU C Library is distributed in the hope that it will be useful, |
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 13 | Lesser General Public License for more details. |
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| 14 | |
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| 15 | You should have received a copy of the GNU Lesser General Public |
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| 16 | License along with the GNU C Library; if not, see |
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| 17 | <https://www.gnu.org/licenses/>. */ |
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| 18 | |
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| 19 | #include <stdio.h> |
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| 20 | #include <stdlib.h> |
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| 21 | #include <unistd.h> |
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| 22 | #include <array_length.h> |
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| 23 | |
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| 24 | static struct |
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| 25 | { |
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| 26 | const char *name; |
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| 27 | int _SC_val; |
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| 28 | } sc_options[] = |
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| 29 | { |
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| 30 | #define N(name) { "_SC_"#name, _SC_##name } |
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| 31 | N (LEVEL1_ICACHE_LINESIZE), |
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| 32 | N (LEVEL1_DCACHE_LINESIZE), |
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| 33 | N (LEVEL2_CACHE_LINESIZE) |
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| 34 | }; |
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| 35 | |
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| 36 | static int |
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| 37 | do_test (void) |
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| 38 | { |
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| 39 | int result = EXIT_SUCCESS; |
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| 40 | |
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| 41 | for (int i = 0; i < array_length (sc_options); ++i) |
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| 42 | { |
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| 43 | long int scret = sysconf (name: sc_options[i]._SC_val); |
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| 44 | if (scret < 0) |
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| 45 | { |
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| 46 | printf (format: "sysconf (%s) returned < 0 (%ld)\n" , |
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| 47 | sc_options[i].name, scret); |
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| 48 | result = EXIT_FAILURE; |
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| 49 | } |
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| 50 | else |
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| 51 | printf (format: "sysconf (%s): %ld\n" , sc_options[i].name, scret); |
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| 52 | } |
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| 53 | |
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| 54 | return result; |
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| 55 | } |
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| 56 | |
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| 57 | #include <support/test-driver.c> |
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| 58 | |
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