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 void f1()
  36 {
  37   time_point t0 = Clock::now();
  38   // This test is spurious as it depends on the time the thread system switches the threads
  39   boost::shared_lock<boost::shared_mutex> lk(m, Clock::now() + ms(300)+ms(1000));
  40   BOOST_TEST(lk.owns_lock() == true);
  41   time_point t1 = Clock::now();
  42   ns d = t1 - t0 - ms(250);
  43   // This test is spurious as it depends on the time the thread system switches the threads
  44   BOOST_TEST(d < ns(50000000)+ms(1000)); // within 50ms
  45 }
  46
  47 void f2()
  48 {
  49   time_point t0 = Clock::now();
  50   boost::shared_lock<boost::shared_mutex> lk(m, Clock::now() + ms(250));
  51   BOOST_TEST(lk.owns_lock() == false);
  52   time_point t1 = Clock::now();
  53   ns d = t1 - t0 - ms(250);
  54   // This test is spurious as it depends on the time the thread system switches the threads
  55   BOOST_TEST(d < ns(5000000)+ms(1000)); // within 5ms
  56 }
  57
  58 int main()
  59 {
  60   {
  61     m.lock();
  62     boost::thread t(f1);
  63     boost::this_thread::sleep_for(ms(250));
  64     m.unlock();
  65     t.join();
  66   }
  67   {
  68     m.lock();
  69     boost::thread t(f2);
  70     boost::this_thread::sleep_for(ms(300)+ms(1000));
  71     m.unlock();
  72     t.join();
  73   }
  74
  75   return boost::report_errors();
  76 }
  77