libstdc++-v3/testsuite/30_threads/timed_mutex/try_lock_until/4.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) 2019-2023 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 <thread>
  27 #include <system_error>
  28 #include <testsuite_hooks.h>
  29 #include <slow_clock.h>
  30
  31 template <typename clock_type>
  32 void test()
  33 {
  34   typedef std::timed_mutex mutex_type;
  35
  36   try
  37     {
  38       using namespace std::chrono;
  39       mutex_type m;
  40
  41       // Confirm that try_lock_until acts like try_lock if the timeout has
  42       // already passed.
  43
  44       // First test with a timeout that is definitely in the past.
  45       VERIFY( m.try_lock_until( clock_type::now() - 1s ) );
  46       m.unlock();
  47
  48       // Then attempt to test with a timeout that might exactly match the
  49       // current time.
  50       VERIFY( m.try_lock_until( clock_type::now() ) );
  51       m.unlock();
  52     }
  53   catch (const std::system_error& e)
  54     {
  55       VERIFY( false );
  56     }
  57   catch (...)
  58     {
  59       VERIFY( false );
  60     }
  61 }
  62
  63 int main()
  64 {
  65   test<std::chrono::system_clock>();
  66   test<std::chrono::steady_clock>();
  67   test<__gnu_test::slow_clock>();
  68 }