| //===-- Linux implementation of getpagesize -------------------------------===// |
| // |
| // 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/unistd/getpagesize.h" |
| |
| #include "src/__support/OSUtil/linux/auxv.h" |
| #include "src/__support/common.h" |
| #include "src/__support/macros/config.h" |
| |
| namespace LIBC_NAMESPACE_DECL { |
| |
| LLVM_LIBC_FUNCTION(int, getpagesize, ()) { |
| cpp::optional<unsigned long> page_size = |
| (LIBC_NAMESPACE::auxv::get(AT_PAGESZ)); |
| if (page_size) |
| return static_cast<int>(*page_size); |
| return -1; |
| } |
| |
| } // namespace LIBC_NAMESPACE_DECL |
