ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/shared_lock/cons/time_point_pass.cpp

   1 //===----------------------------------------------------------------------===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is dual licensed under the MIT and the University of Illinois Open
   6 // Source Licenses. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 // Copyright (C) 2011 Vicente J. Botet Escriba
  11 //
  12 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
  13 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  14
  15 // <boost/thread/locks.hpp>
  16
  17 // template <class Mutex> class shared_lock;
  18
  19 // template <class Clock, class Duration>
  20 //   shared_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
  21
  22 #include <boost/thread/lock_types.hpp>
  23 #include <boost/thread/shared_mutex.hpp>
  24 #include <boost/thread/thread.hpp>
  25 #include <boost/detail/lightweight_test.hpp>
  26
  27 boost::shared_mutex m;
  28
  29 typedef boost::chrono::steady_clock Clock;
  30 typedef Clock::time_point time_point;
  31 typedef Clock::duration duration;
  32 typedef boost::chrono::milliseconds ms;
  33 typedef boost::chrono::nanoseconds ns;
  34
  35 #ifdef BOOST_THREAD_PLATFORM_WIN32
  36 const ms max_diff(250);
  37 #else
  38 const ms max_diff(75);
  39 #endif
  40
  41 void f1()
  42 {
  43   time_point t0 = Clock::now();
  44   boost::shared_lock<boost::shared_mutex> lk(m, Clock::now() + ms(750));
  45   BOOST_TEST(lk.owns_lock() == true);
  46   time_point t1 = Clock::now();
  47   ns d = t1 - t0 - ms(250);
  48   BOOST_TEST(d < max_diff);
  49 }
  50
  51 void f2()
  52 {
  53   time_point t0 = Clock::now();
  54   boost::shared_lock<boost::shared_mutex> lk(m, Clock::now() + ms(250));
  55   BOOST_TEST(lk.owns_lock() == false);
  56   time_point t1 = Clock::now();
  57   ns d = t1 - t0 - ms(250);
  58   BOOST_TEST(d < max_diff);
  59 }
  60
  61 int main()
  62 {
  63   {
  64     m.lock();
  65     boost::thread t(f1);
  66     boost::this_thread::sleep_for(ms(250));
  67     m.unlock();
  68     t.join();
  69   }
  70   {
  71     m.lock();
  72     boost::thread t(f2);
  73     boost::this_thread::sleep_for(ms(750));
  74     m.unlock();
  75     t.join();
  76   }
  77
  78   return boost::report_errors();
  79 }
  80