diff options
Diffstat (limited to 'libc/src/sched/linux/getcpu.cpp')
-rw-r--r-- | libc/src/sched/linux/getcpu.cpp | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libc/src/sched/linux/getcpu.cpp b/libc/src/sched/linux/getcpu.cpp new file mode 100644 index 0000000..a34b693 --- /dev/null +++ b/libc/src/sched/linux/getcpu.cpp @@ -0,0 +1,29 @@ +//===-- Implementation of getcpu ------------------------------------------===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// + +#include "src/sched/getcpu.h" + +#include "src/__support/OSUtil/syscall.h" // For internal syscall function. +#include "src/__support/common.h" +#include "src/__support/libc_errno.h" +#include "src/__support/macros/config.h" + +#include <sys/syscall.h> // For syscall numbers. + +namespace LIBC_NAMESPACE_DECL { + +LLVM_LIBC_FUNCTION(int, getcpu, (unsigned int *cpu, unsigned int *node)) { + int ret = LIBC_NAMESPACE::syscall_impl<int>(SYS_getcpu, cpu, node, nullptr); + if (ret < 0) { + libc_errno = -ret; + return -1; + } + return 0; +} + +} // namespace LIBC_NAMESPACE_DECL |