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58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/* Test system cache line sizes.
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Copyright (C) 2021-2025 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <array_length.h>
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static struct
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{
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const char *name;
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int _SC_val;
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} sc_options[] =
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{
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#define N(name) { "_SC_"#name, _SC_##name }
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N (LEVEL1_ICACHE_LINESIZE),
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N (LEVEL1_DCACHE_LINESIZE),
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N (LEVEL2_CACHE_LINESIZE)
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};
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static int
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do_test (void)
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{
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int result = EXIT_SUCCESS;
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for (int i = 0; i < array_length (sc_options); ++i)
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{
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long int scret = sysconf (sc_options[i]._SC_val);
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if (scret < 0)
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{
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printf ("sysconf (%s) returned < 0 (%ld)\n",
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sc_options[i].name, scret);
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result = EXIT_FAILURE;
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}
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else
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printf ("sysconf (%s): %ld\n", sc_options[i].name, scret);
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}
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return result;
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}
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#include <support/test-driver.c>
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