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49 lines
1.6 KiB
C
49 lines
1.6 KiB
C
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/* Tests for sched_getaffinity with large buffers.
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Copyright (C) 2021 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 <array_length.h>
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#include <sched.h>
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#include <support/check.h>
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/* NB: this test may fail on system with more than 32k cpus. */
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static int
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do_test (void)
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{
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/* The values are larger than the default cpu_set_t. */
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const int bufsize[] = { 1<<11, 1<<12, 1<<13, 1<<14, 1<<15, 1<<16, 1<<17 };
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int cpucount[array_length (bufsize)];
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for (int i = 0; i < array_length (bufsize); i++)
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{
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cpu_set_t *cpuset = CPU_ALLOC (bufsize[i]);
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TEST_VERIFY (cpuset != NULL);
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size_t size = CPU_ALLOC_SIZE (bufsize[i]);
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TEST_COMPARE (sched_getaffinity (0, size, cpuset), 0);
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cpucount[i] = CPU_COUNT_S (size, cpuset);
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CPU_FREE (cpuset);
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}
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for (int i = 0; i < array_length (cpucount) - 1; i++)
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TEST_COMPARE (cpucount[i], cpucount[i + 1]);
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return 0;
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}
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#include <support/test-driver.c>
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