mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-22 13:00:06 +00:00
37 lines
1.3 KiB
C
37 lines
1.3 KiB
C
/* Count bits in CPU set. x86-64 multi-arch version.
|
|
This file is part of the GNU C Library.
|
|
Copyright (C) 2008-2016 Free Software Foundation, Inc.
|
|
Contributed by Ulrich Drepper <drepper@redhat.com>.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <sched.h>
|
|
#include "init-arch.h"
|
|
|
|
#define __sched_cpucount static generic_cpucount
|
|
#include <posix/sched_cpucount.c>
|
|
#undef __sched_cpucount
|
|
|
|
#define POPCNT(l) \
|
|
({ __cpu_mask r; \
|
|
asm ("popcnt %1, %0" : "=r" (r) : "0" (l));\
|
|
r; })
|
|
#define __sched_cpucount static popcount_cpucount
|
|
#include <posix/sched_cpucount.c>
|
|
#undef __sched_cpucount
|
|
|
|
libc_ifunc (__sched_cpucount,
|
|
HAS_CPU_FEATURE (POPCOUNT) ? popcount_cpucount : generic_cpucount);
|