31 lines · cpp
1//===-- Implementation of sched_getcpucount -------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#include "src/sched/sched_getcpucount.h"10 11#include "src/__support/CPP/bit.h"12#include "src/__support/common.h"13#include "src/__support/macros/config.h"14 15#include "hdr/types/cpu_set_t.h"16#include "hdr/types/size_t.h"17#include <stddef.h>18 19namespace LIBC_NAMESPACE_DECL {20 21LLVM_LIBC_FUNCTION(int, __sched_getcpucount,22 (size_t cpuset_size, const cpu_set_t *mask)) {23 int result = 0;24 for (size_t i = 0; i < cpuset_size / sizeof(long); ++i) {25 result += cpp::popcount(mask->__mask[i]);26 }27 return result;28}29 30} // namespace LIBC_NAMESPACE_DECL31