52 lines
1.2 KiB
C
52 lines
1.2 KiB
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2014 Oracle and/or its affiliates. All Rights Reserved.
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*/
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/*
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* Some old libcs (like glibc < 2.7) do not provide interfaces for
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* dynamically sized cpu sets, but provide only static cpu_set_t type
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* with no more than CPU_SETSIZE cpus in it.
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*
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* This file is a wrapper of the dynamic interfaces using the static ones.
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*
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* If the number of cpus available on the system is greater than
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* CPU_SETSIZE, this interface will not work. Update libc in this case :)
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*/
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#define _GNU_SOURCE
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#include <sched.h>
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#ifndef LAPI_CPUSET_H__
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#define LAPI_CPUSET_H__
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#ifndef CPU_ALLOC
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#define CPU_ALLOC(ncpus) malloc(sizeof(cpu_set_t)); \
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if (ncpus > CPU_SETSIZE) { \
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tst_brk(TCONF, \
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"Your libc does not support masks with %ld cpus", (long)ncpus); \
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}
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#endif
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#ifndef CPU_FREE
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#define CPU_FREE(ptr) free(ptr)
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#endif
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#ifndef CPU_ALLOC_SIZE
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#define CPU_ALLOC_SIZE(size) sizeof(cpu_set_t)
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#endif
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#ifndef CPU_ZERO_S
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#define CPU_ZERO_S(size, mask) CPU_ZERO(mask)
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#endif
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#ifndef CPU_SET_S
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#define CPU_SET_S(cpu, size, mask) CPU_SET(cpu, mask)
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#endif
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#ifndef CPU_ISSET_S
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#define CPU_ISSET_S(cpu, size, mask) CPU_ISSET(cpu, mask)
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#endif
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#endif /* LAPI_CPUSET_H__ */
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