2 //===----------------------------------------------------------------------===//
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
8 //===----------------------------------------------------------------------===//
10 export namespace std {
11 #ifndef _LIBCPP_HAS_NO_THREADS
12 // [thread.sema.cnt], class template counting_semaphore
13 using std::counting_semaphore;
15 using std::binary_semaphore;
16 #endif // _LIBCPP_HAS_NO_THREADS