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 #include "../../../../../timming.hpp"
  30
  31 boost::shared_mutex m;
  32
  33 typedef boost::chrono::high_resolution_clock Clock;
  34 typedef Clock::time_point time_point;
  35 typedef Clock::duration duration;
  36 typedef boost::chrono::milliseconds ms;
  37 typedef boost::chrono::nanoseconds ns;
  38 time_point t0;
  39 time_point t1;
  40
  41 const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
  42
  43 void f1()
  44 {
  45   t0 = Clock::now();
  46   boost::upgrade_lock<boost::shared_mutex> lk(m, ms(750));
  47   BOOST_TEST(lk.owns_lock() == true);
  48   t1 = Clock::now();
  49 }
  50
  51 void f2()
  52 {
  53   t0 = Clock::now();
  54   boost::upgrade_lock<boost::shared_mutex> lk(m, ms(250));
  55   BOOST_TEST(lk.owns_lock() == false);
  56   t1 = Clock::now();
  57   ns d = t1 - t0 - ms(250);
  58   BOOST_THREAD_TEST_IT(d, ns(max_diff));
  59 }
  60
  61 int main()
  62 {
  63   {
  64     m.lock();
  65     boost::thread t(f1);
  66     time_point t2 = Clock::now();
  67     boost::this_thread::sleep_for(ms(250));
  68     time_point t3 = Clock::now();
  69     m.unlock();
  70     t.join();
  71
  72     ns sleep_time = t3 - t2;
  73     ns d_ns = t1 - t0 - sleep_time;
  74     ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns);
  75     // BOOST_TEST_GE(d_ms.count(), 0);
  76     BOOST_THREAD_TEST_IT(d_ms, max_diff);
  77     BOOST_THREAD_TEST_IT(d_ns, ns(max_diff));
  78   }
  79   {
  80     m.lock();
  81     boost::thread t(f2);
  82     boost::this_thread::sleep_for(ms(750));
  83     m.unlock();
  84     t.join();
  85   }
  86
  87   return boost::report_errors();
  88 }
  89