ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/upgrade_lock/cons/duration_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 Rep, class Period>
  20 //   upgrade_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_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 #include <boost/chrono/chrono_io.hpp>
  29
  30 boost::shared_mutex m;
  31
  32 typedef boost::chrono::steady_clock Clock;
  33 typedef Clock::time_point time_point;
  34 typedef Clock::duration duration;
  35 typedef boost::chrono::milliseconds ms;
  36 typedef boost::chrono::nanoseconds ns;
  37
  38 void f1()
  39 {
  40   time_point t0 = Clock::now();
  41   // This test is spurious as it depends on the time the thread system switches the threads
  42   boost::upgrade_lock<boost::shared_mutex> lk(m, ms(300)+ms(1000));
  43   BOOST_TEST(lk.owns_lock() == true);
  44   time_point t1 = Clock::now();
  45   ns d = t1 - t0 - ms(250);
  46   // This test is spurious as it depends on the time the thread system switches the threads
  47   BOOST_TEST(d < ns(5000000)+ms(1000)); // within 5ms
  48 }
  49
  50 void f2()
  51 {
  52   time_point t0 = Clock::now();
  53   boost::upgrade_lock<boost::shared_mutex> lk(m, ms(250));
  54   BOOST_TEST(lk.owns_lock() == false);
  55   time_point t1 = Clock::now();
  56   ns d = t1 - t0 - ms(250);
  57   // This test is spurious as it depends on the time the thread system switches the threads
  58   BOOST_TEST(d < ns(5000000)+ms(1000)); // within 5ms
  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(300));
  74     m.unlock();
  75     t.join();
  76   }
  77
  78   return boost::report_errors();
  79 }
  80