libstdc++-v3/testsuite/30_threads/shared_timed_mutex/try_lock/2.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) 2013-2019 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 <shared_mutex>
  26 #include <thread>
  27 #include <system_error>
  28 #include <testsuite_hooks.h>
  29
  30 int main()
  31 {
  32   typedef std::shared_timed_mutex mutex_type;
  33
  34   try
  35     {
  36       mutex_type m;
  37       m.lock();
  38       bool b;
  39
  40       std::thread t([&] {
  41         try
  42           {
  43             b = m.try_lock();
  44           }
  45         catch (const std::system_error& e)
  46           {
  47             VERIFY( false );
  48           }
  49       });
  50       t.join();
  51       VERIFY( !b );
  52
  53       m.unlock();
  54     }
  55   catch (const std::system_error& e)
  56     {
  57       VERIFY( false );
  58     }
  59   catch (...)
  60     {
  61       VERIFY( false );
  62     }
  63
  64   return 0;
  65 }