libstdc++-v3/testsuite/30_threads/shared_lock/cons/3.cc

   1 // { dg-do run }
   2 // { dg-options "-pthread"  }
   3 // { dg-require-effective-target c++14 }
   4 // { dg-require-effective-target pthread }
   5 // { dg-require-gthreads "" }
   6
   7 // Copyright (C) 2013-2020 Free Software Foundation, Inc.
   8 //
   9 // This file is part of the GNU ISO C++ Library.  This library is free
  10 // software; you can redistribute it and/or modify it under the
  11 // terms of the GNU General Public License as published by the
  12 // Free Software Foundation; either version 3, or (at your option)
  13 // any later version.
  14
  15 // This library is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19
  20 // You should have received a copy of the GNU General Public License along
  21 // with this library; see the file COPYING3.  If not see
  22 // <http://www.gnu.org/licenses/>.
  23
  24
  25 #include <shared_mutex>
  26 #include <system_error>
  27 #include <testsuite_hooks.h>
  28
  29 int main()
  30 {
  31   typedef std::shared_timed_mutex mutex_type;
  32   typedef std::shared_lock<mutex_type> lock_type;
  33
  34   try
  35     {
  36       mutex_type m;
  37       lock_type lock(m, std::defer_lock);
  38
  39       VERIFY( !lock.owns_lock() );
  40       VERIFY( !(bool)lock );
  41     }
  42   catch (const std::system_error& e)
  43     {
  44       VERIFY( false );
  45     }
  46   catch (...)
  47     {
  48       VERIFY( false );
  49     }
  50
  51   return 0;
  52 }