| 1 | //===-- Implementation of sched_getcpucount -------------------------------===// |
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| 2 | // |
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| 3 | // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
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| 4 | // See https://llvm.org/LICENSE.txt for license information. |
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| 5 | // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
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| 6 | // |
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| 7 | //===----------------------------------------------------------------------===// |
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| 8 | |
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| 9 | #include "src/sched/sched_getcpucount.h" |
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| 10 | |
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| 11 | #include "src/__support/CPP/bit.h" |
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| 12 | #include "src/__support/common.h" |
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| 13 | #include "src/__support/macros/config.h" |
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| 14 | |
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| 15 | #include <sched.h> |
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| 16 | #include <stddef.h> |
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| 17 | |
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| 18 | namespace LIBC_NAMESPACE_DECL { |
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| 19 | |
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| 20 | LLVM_LIBC_FUNCTION(int, __sched_getcpucount, |
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| 21 | (size_t cpuset_size, const cpu_set_t *mask)) { |
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| 22 | int result = 0; |
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| 23 | for (size_t i = 0; i < cpuset_size / sizeof(long); ++i) { |
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| 24 | result += cpp::popcount(mask->__mask[i]); |
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| 25 | } |
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| 26 | return result; |
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| 27 | } |
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| 28 | |
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| 29 | } // namespace LIBC_NAMESPACE_DECL |
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| 30 | |
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