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