libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/move_ctor.pass.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-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // UNSUPPORTED: no-threads
  10 // UNSUPPORTED: c++03, c++11
  11
  12 // <shared_mutex>
  13
  14 // template <class Mutex> class shared_lock;
  15
  16 // shared_lock(shared_lock&& u);
  17
  18 #include <shared_mutex>
  19 #include <cassert>
  20 #include "nasty_containers.h"
  21
  22 #include "test_macros.h"
  23
  24 int main(int, char**)
  25 {
  26     {
  27     typedef std::shared_timed_mutex M;
  28     M m;
  29     std::shared_lock<M> lk0(m);
  30     std::shared_lock<M> lk = std::move(lk0);
  31     assert(lk.mutex() == std::addressof(m));
  32     assert(lk.owns_lock() == true);
  33     assert(lk0.mutex() == nullptr);
  34     assert(lk0.owns_lock() == false);
  35     }
  36     {
  37     typedef nasty_mutex M;
  38     M m;
  39     std::shared_lock<M> lk0(m);
  40     std::shared_lock<M> lk = std::move(lk0);
  41     assert(lk.mutex() == std::addressof(m));
  42     assert(lk.owns_lock() == true);
  43     assert(lk0.mutex() == nullptr);
  44     assert(lk0.owns_lock() == false);
  45     }
  46
  47   return 0;
  48 }