libcxx/test/std/thread/thread.mutex/thread.lock/thread.lock.shared/thread.lock.shared.cons/mutex_adopt_lock.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(mutex_type& m, adopt_lock_t);
  17
  18 #include <shared_mutex>
  19 #include <cassert>
  20 #include <mutex>
  21 #include "nasty_containers.h"
  22
  23 #include "test_macros.h"
  24
  25 int main(int, char**)
  26 {
  27     {
  28     typedef std::shared_timed_mutex M;
  29     M m;
  30     m.lock();
  31     std::unique_lock<M> lk(m, std::adopt_lock);
  32     assert(lk.mutex() == std::addressof(m));
  33     assert(lk.owns_lock() == true);
  34     }
  35     {
  36     typedef nasty_mutex M;
  37     M m;
  38     m.lock();
  39     std::unique_lock<M> lk(m, std::adopt_lock);
  40     assert(lk.mutex() == std::addressof(m));
  41     assert(lk.owns_lock() == true);
  42     }
  43
  44   return 0;
  45 }