ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/upgrade_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 upgrade_lock;
  18
  19 // template <class Clock, class Duration>
  20 //   upgrade_lock(mutex_type& m, const chrono::time_point<Clock, Duration>& abs_time);
  21
  22 #define BOOST_THREAD_PROVIDES_GENERIC_SHARED_MUTEX_ON_WIN
  23
  24 #include <boost/thread/lock_types.hpp>
  25 #include <boost/thread/shared_mutex.hpp>
  26 #include <boost/thread/thread.hpp>
  27 #include <boost/detail/lightweight_test.hpp>
  28
  29 boost::shared_mutex m;
  30
  31 typedef boost::chrono::steady_clock Clock;
  32 typedef Clock::time_point time_point;
  33 typedef Clock::duration duration;
  34 typedef boost::chrono::milliseconds ms;
  35 typedef boost::chrono::nanoseconds ns;
  36
  37 void f1()
  38 {
  39   time_point t0 = Clock::now();
  40   // This test is spurious as it depends on the time the thread system switches the threads
  41   boost::upgrade_lock<boost::shared_mutex> lk(m, Clock::now() + ms(300)+ms(1000));
  42   BOOST_TEST(lk.owns_lock() == true);
  43   time_point t1 = Clock::now();
  44   ns d = t1 - t0 - ms(250);
  45   // This test is spurious as it depends on the time the thread system switches the threads
  46   BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms
  47 }
  48
  49 void f2()
  50 {
  51   time_point t0 = Clock::now();
  52   boost::upgrade_lock<boost::shared_mutex> lk(m, Clock::now() + ms(250));
  53   BOOST_TEST(lk.owns_lock() == false);
  54   time_point t1 = Clock::now();
  55   ns d = t1 - t0 - ms(250);
  56   // This test is spurious as it depends on the time the thread system switches the threads
  57   BOOST_TEST(d < ns(5000000)+ms(1000)); // within 5ms
  58 }
  59
  60 int main()
  61 {
  62   {
  63     m.lock();
  64     boost::thread t(f1);
  65     boost::this_thread::sleep_for(ms(250));
  66     m.unlock();
  67     t.join();
  68   }
  69   {
  70     m.lock();
  71     boost::thread t(f2);
  72     boost::this_thread::sleep_for(ms(300));
  73     m.unlock();
  74     t.join();
  75   }
  76
  77   return boost::report_errors();
  78 }
  79