libstdc++-v3/testsuite/30_threads/shared_timed_mutex/try_lock_until/1.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) 2019-2024 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 #include <slow_clock.h>
  30
  31 template <typename clock_type>
  32 void test()
  33 {
  34   typedef std::shared_timed_mutex mutex_type;
  35
  36   try
  37     {
  38       mutex_type m;
  39       m.lock();
  40       bool b;
  41
  42       std::thread t([&] {
  43         try
  44           {
  45             using namespace std::chrono;
  46             const auto timeout = 100ms;
  47
  48             {
  49               const auto start = clock_type::now();
  50               const auto b = m.try_lock_until(start + timeout);
  51               const auto t = clock_type::now() - start;
  52               VERIFY( !b );
  53               VERIFY( t >= timeout );
  54             }
  55
  56             {
  57               const auto start = clock_type::now();
  58               const auto b = m.try_lock_shared_until(start + timeout);
  59               const auto t = clock_type::now() - start;
  60               VERIFY( !b );
  61               VERIFY( t >= timeout );
  62             }
  63           }
  64         catch (const std::system_error& e)
  65           {
  66             VERIFY( false );
  67           }
  68         });
  69       t.join();
  70       m.unlock();
  71     }
  72   catch (const std::system_error& e)
  73     {
  74       VERIFY( false );
  75     }
  76   catch (...)
  77     {
  78       VERIFY( false );
  79     }
  80 }
  81
  82 int main()
  83 {
  84   test<std::chrono::system_clock>();
  85   test<std::chrono::steady_clock>();
  86   test<__gnu_test::slow_clock>();
  87 }