ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/unique_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 unique_lock;
  18
  19 // template <class Rep, class Period>
  20 //   unique_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/mutex.hpp>
  26 #include <boost/thread/thread.hpp>
  27 #include <boost/detail/lightweight_test.hpp>
  28 #include <boost/chrono/chrono_io.hpp>
  29
  30 #if defined BOOST_THREAD_USES_CHRONO
  31
  32 boost::timed_mutex m;
  33
  34 typedef boost::chrono::steady_clock Clock;
  35 typedef Clock::time_point time_point;
  36 typedef Clock::duration duration;
  37 typedef boost::chrono::milliseconds ms;
  38 typedef boost::chrono::nanoseconds ns;
  39
  40 void f1()
  41 {
  42   time_point t0 = Clock::now();
  43   // This test is spurious as it depends on the time the thread system switches the threads
  44   boost::unique_lock<boost::timed_mutex> lk(m, ms(300)+ms(1000));
  45   BOOST_TEST(lk.owns_lock() == true);
  46   time_point t1 = Clock::now();
  47   ns d = t1 - t0 - ms(250);
  48   // This test is spurious as it depends on the time the thread system switches the threads
  49   BOOST_TEST(d < ns(5000000)+ms(1000)); // within 5ms
  50 }
  51
  52 void f2()
  53 {
  54   time_point t0 = Clock::now();
  55   boost::unique_lock<boost::timed_mutex> lk(m, ms(250));
  56   BOOST_TEST(lk.owns_lock() == false);
  57   time_point t1 = Clock::now();
  58   ns d = t1 - t0 - ms(250);
  59   // This test is spurious as it depends on the time the thread system switches the threads
  60   BOOST_TEST(d < ns(5000000)+ms(1000)); // within 5ms
  61 }
  62
  63 int main()
  64 {
  65   {
  66     m.lock();
  67     boost::thread t(f1);
  68     boost::this_thread::sleep_for(ms(250));
  69     m.unlock();
  70     t.join();
  71   }
  72   {
  73     m.lock();
  74     boost::thread t(f2);
  75     boost::this_thread::sleep_for(ms(300)+ms(1000));
  76     m.unlock();
  77     t.join();
  78   }
  79
  80   return boost::report_errors();
  81 }
  82
  83 #else
  84 #error "Test not applicable: BOOST_THREAD_USES_CHRONO not defined for this platform as not supported"
  85 #endif