| 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-exception |
| 6 | // |
| 7 | //===----------------------------------------------------------------------===// |
| 8 | |
| 9 | #include "src/sched/sched_getcpucount.h" |
| 10 | |
| 11 | #include "src/__support/common.h" |
| 12 | |
| 13 | #include <sched.h> |
| 14 | #include <stddef.h> |
| 15 | |
| 16 | namespace LIBC_NAMESPACE { |
| 17 | |
| 18 | LLVM_LIBC_FUNCTION(int, __sched_getcpucount, |
| 19 | (size_t cpuset_size, const cpu_set_t *mask)) { |
| 20 | int result = 0; |
| 21 | for (size_t i = 0; i < cpuset_size / sizeof(long); ++i) { |
| 22 | result += __builtin_popcountl(mask->__mask[i]); |
| 23 | } |
| 24 | return result; |
| 25 | } |
| 26 | |
| 27 | } // namespace LIBC_NAMESPACE |
| 28 |