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

   1 // { dg-do run }
   2 // { dg-options "-pthread"  }
   3 // { dg-require-effective-target c++11 }
   4 // { dg-require-effective-target pthread }
   5 // { dg-require-cstdint "" }
   6 // { dg-require-gthreads "" }
   7
   8 // Copyright (C) 2008-2018 Free Software Foundation, Inc.
   9 //
  10 // This file is part of the GNU ISO C++ Library.  This library is free
  11 // software; you can redistribute it and/or modify it under the
  12 // terms of the GNU General Public License as published by the
  13 // Free Software Foundation; either version 3, or (at your option)
  14 // any later version.
  15
  16 // This library is distributed in the hope that it will be useful,
  17 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 // GNU General Public License for more details.
  20
  21 // You should have received a copy of the GNU General Public License along
  22 // with this library; see the file COPYING3.  If not see
  23 // <http://www.gnu.org/licenses/>.
  24
  25
  26 #include <mutex>
  27 #include <system_error>
  28 #include <testsuite_hooks.h>
  29
  30 int main()
  31 {
  32   typedef std::mutex mutex_type;
  33   typedef std::unique_lock<mutex_type> lock_type;
  34
  35   try
  36     {
  37       mutex_type m;
  38       lock_type l(m, std::defer_lock);
  39
  40       l.lock();
  41
  42       VERIFY( (bool)l );
  43       VERIFY( l.owns_lock() );
  44
  45       l.unlock();
  46
  47       VERIFY( !(bool)l );
  48       VERIFY( !l.owns_lock() );
  49     }
  50   catch (const std::system_error& e)
  51     {
  52       VERIFY( false );
  53     }
  54   catch (...)
  55     {
  56       VERIFY( false );
  57     }
  58
  59   return 0;
  60 }