1// -*- C++ -*-
2//===----------------------------------------------------------------------===//
3//
4// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5// See https://llvm.org/LICENSE.txt for license information.
6// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7//
8//===----------------------------------------------------------------------===//
9
10export namespace std {
11#ifndef _LIBCPP_HAS_NO_THREADS
12  // [thread.sharedmutex.class], class shared_­mutex
13  using std::shared_mutex;
14  // [thread.sharedtimedmutex.class], class shared_­timed_­mutex
15  using std::shared_timed_mutex;
16  // [thread.lock.shared], class template shared_­lock
17  using std::shared_lock;
18  using std::swap;
19#endif // _LIBCPP_HAS_NO_THREADS
20} // namespace std
21