ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/shared_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 shared_lock;
  18
  19 // template <class Rep, class Period>
  20 //   shared_lock(mutex_type& m, const chrono::duration<Rep, Period>& rel_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 #include <boost/chrono/chrono_io.hpp>
  27 #include "../../../../../timming.hpp"
  28
  29 boost::shared_mutex m;
  30
  31 typedef boost::chrono::high_resolution_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 time_point t0;
  37 time_point t1;
  38
  39 const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
  40
  41 void f1()
  42 {
  43   t0 = Clock::now();
  44   boost::shared_lock<boost::shared_mutex> lk(m, ms(750));
  45   BOOST_TEST(lk.owns_lock() == true);
  46   t1 = Clock::now();
  47 }
  48
  49 void f2()
  50 {
  51   t0 = Clock::now();
  52   boost::shared_lock<boost::shared_mutex> lk(m, ms(250));
  53   BOOST_TEST(lk.owns_lock() == false);
  54   t1 = Clock::now();
  55   ns d = t1 - t0 - ms(250);
  56   BOOST_THREAD_TEST_IT(d, ns(max_diff));
  57 }
  58
  59 int main()
  60 {
  61   {
  62     m.lock();
  63     boost::thread t(f1);
  64     time_point t2 = Clock::now();
  65     boost::this_thread::sleep_for(ms(250));
  66     time_point t3 = Clock::now();
  67     m.unlock();
  68     t.join();
  69
  70     ns sleep_time = t3 - t2;
  71     ns d_ns = t1 - t0 - sleep_time;
  72     ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns);
  73     // BOOST_TEST_GE(d_ms.count(), 0);
  74     BOOST_THREAD_TEST_IT(d_ms, max_diff);
  75     BOOST_THREAD_TEST_IT(d_ns, ns(max_diff));
  76   }
  77   {
  78     m.lock();
  79     boost::thread t(f2);
  80     boost::this_thread::sleep_for(ms(750));
  81     m.unlock();
  82     t.join();
  83   }
  84
  85   return boost::report_errors();
  86 }
  87