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74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/* Check use of sysconf() for cache geometries.
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Copyright (C) 2017-2020 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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/* Test use of sysconf() to get cache sizes, cache set associativity
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and cache line sizes. */
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#include <errno.h>
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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 <support/test-driver.h>
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#define call_str(f, name) f(name, #name)
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long
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do_sysconf (int name, const char * str)
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{
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int rc = 0;
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long val;
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errno = 0;
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val = sysconf (name);
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if (val == -1) {
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if (errno != EINVAL) {
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printf("error: sysconf(%s): unexpected errno(%d)\n", str, errno);
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exit (1);
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}
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printf ("info: sysconf(%s): unsupported\n", str);
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rc = 1;
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} else
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printf ("sysconf(%s) = 0x%lx (%ld)\n", str, val, val);
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return rc;
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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 rc = 0;
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rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_SIZE);
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rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_ASSOC);
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rc += call_str (do_sysconf, _SC_LEVEL1_ICACHE_LINESIZE);
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rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_SIZE);
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rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_ASSOC);
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rc += call_str (do_sysconf, _SC_LEVEL1_DCACHE_LINESIZE);
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rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_SIZE);
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rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_ASSOC);
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rc += call_str (do_sysconf, _SC_LEVEL2_CACHE_LINESIZE);
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rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_SIZE);
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rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_ASSOC);
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rc += call_str (do_sysconf, _SC_LEVEL3_CACHE_LINESIZE);
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if (rc)
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return EXIT_UNSUPPORTED;
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return 0;
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}
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#include <support/test-driver.c>
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