libstdc++-v3/testsuite/30_threads/lock/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-gthreads "" }
   6
   7 // Copyright (C) 2010-2019 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 <mutex>
  26 #include <system_error>
  27 #include <testsuite_hooks.h>
  28
  29 int main()
  30 {
  31   typedef std::mutex mutex_type;
  32   typedef std::unique_lock<mutex_type> lock_type;
  33
  34   try
  35     {
  36       mutex_type m1, m2, m3;
  37       lock_type l1(m1, std::defer_lock),
  38         l2(m2, std::defer_lock),
  39         l3(m3, std::defer_lock);
  40
  41       try
  42         {
  43           std::lock(l1, l2, l3);
  44           VERIFY( l1.owns_lock() );
  45           VERIFY( l2.owns_lock() );
  46           VERIFY( l3.owns_lock() );
  47         }
  48       catch (const std::system_error& e)
  49         {
  50           VERIFY( false );
  51         }
  52     }
  53   catch (const std::system_error& e)
  54     {
  55       VERIFY( false );
  56     }
  57   catch (...)
  58     {
  59       VERIFY( false );
  60     }
  61
  62   return 0;
  63 }