libcxx/test/std/thread/thread.stoptoken/stoptoken/cons.copy.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: libcpp-has-no-experimental-stop_token
  11 // UNSUPPORTED: c++03, c++11, c++14, c++17
  12 // XFAIL: availability-synchronization_library-missing
  13
  14 // stop_token(const stop_token&) noexcept;
  15
  16 #include <cassert>
  17 #include <stop_token>
  18 #include <type_traits>
  19
  20 #include "test_macros.h"
  21
  22 static_assert(std::is_nothrow_copy_constructible_v<std::stop_token>);
  23
  24 int main(int, char**) {
  25   {
  26     std::stop_source source;
  27     auto st = source.get_token();
  28     std::stop_token copy{st};
  29
  30     assert(st == copy);
  31
  32     assert(st.stop_possible());
  33     assert(!st.stop_requested());
  34
  35     assert(copy.stop_possible());
  36     assert(!copy.stop_requested());
  37
  38     source.request_stop();
  39     assert(st.stop_possible());
  40     assert(st.stop_requested());
  41
  42     assert(copy.stop_possible());
  43     assert(copy.stop_requested());
  44
  45   }
  46
  47   return 0;
  48 }