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37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
/* Count bits in CPU set. x86-64 multi-arch version.
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This file is part of the GNU C Library.
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Copyright (C) 2008-2015 Free Software Foundation, Inc.
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Contributed by Ulrich Drepper <drepper@redhat.com>.
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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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<http://www.gnu.org/licenses/>. */
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#include <sched.h>
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#include "init-arch.h"
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#define __sched_cpucount static generic_cpucount
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#include <posix/sched_cpucount.c>
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#undef __sched_cpucount
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#define POPCNT(l) \
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({ __cpu_mask r; \
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asm ("popcnt %1, %0" : "=r" (r) : "0" (l));\
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r; })
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#define __sched_cpucount static popcount_cpucount
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#include <posix/sched_cpucount.c>
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#undef __sched_cpucount
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libc_ifunc (__sched_cpucount,
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HAS_POPCOUNT ? popcount_cpucount : generic_cpucount);
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