54 lines · cpp
1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8//9// UNSUPPORTED: no-threads10// UNSUPPORTED: c++03, c++1111 12// <shared_mutex>13 14// template <class Mutex> class shared_lock;15 16// shared_lock& operator=(shared_lock&& u);17 18#include <shared_mutex>19#include <cassert>20#include "nasty_containers.h"21 22#include "test_macros.h"23 24 25int main(int, char**)26{27 {28 typedef std::shared_timed_mutex M;29 M m0;30 M m1;31 std::shared_lock<M> lk0(m0);32 std::shared_lock<M> lk1(m1);33 lk1 = std::move(lk0);34 assert(lk1.mutex() == std::addressof(m0));35 assert(lk1.owns_lock() == true);36 assert(lk0.mutex() == nullptr);37 assert(lk0.owns_lock() == false);38 }39 {40 typedef nasty_mutex M;41 M m0;42 M m1;43 std::shared_lock<M> lk0(m0);44 std::shared_lock<M> lk1(m1);45 lk1 = std::move(lk0);46 assert(lk1.mutex() == std::addressof(m0));47 assert(lk1.owns_lock() == true);48 assert(lk0.mutex() == nullptr);49 assert(lk0.owns_lock() == false);50 }51 52 return 0;53}54