libstdc++-v3/testsuite/30_threads/unique_lock/locking/1.cc

   1 // { dg-do run }
   2 // { dg-additional-options "-pthread" { target pthread } }
   3 // { dg-require-effective-target c++11 }
   4 // { dg-require-gthreads "" }
   5
   6 // Copyright (C) 2008-2022 Free Software Foundation, Inc.
   7 //
   8 // This file is part of the GNU ISO C++ Library.  This library is free
   9 // software; you can redistribute it and/or modify it under the
  10 // terms of the GNU General Public License as published by the
  11 // Free Software Foundation; either version 3, or (at your option)
  12 // any later version.
  13
  14 // This library is distributed in the hope that it will be useful,
  15 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 // GNU General Public License for more details.
  18
  19 // You should have received a copy of the GNU General Public License along
  20 // with this library; see the file COPYING3.  If not see
  21 // <http://www.gnu.org/licenses/>.
  22
  23
  24 #include <mutex>
  25 #include <system_error>
  26 #include <testsuite_hooks.h>
  27
  28 int main()
  29 {
  30   typedef std::mutex mutex_type;
  31   typedef std::unique_lock<mutex_type> lock_type;
  32
  33   try
  34     {
  35       mutex_type m;
  36       lock_type l(m, std::defer_lock);
  37
  38       l.lock();
  39
  40       VERIFY( (bool)l );
  41       VERIFY( l.owns_lock() );
  42
  43       l.unlock();
  44
  45       VERIFY( !(bool)l );
  46       VERIFY( !l.owns_lock() );
  47     }
  48   catch (const std::system_error& e)
  49     {
  50       VERIFY( false );
  51     }
  52   catch (...)
  53     {
  54       VERIFY( false );
  55     }
  56
  57   return 0;
  58 }