ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/unique_lock/cons/mutex_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 // explicit unique_lock(Mutex& m);
  20
  21
  22 #include <boost/thread/lock_types.hpp>
  23 #include <boost/thread/mutex.hpp>
  24 #include <boost/thread/thread.hpp>
  25 #include <boost/detail/lightweight_test.hpp>
  26 #include <iostream>
  27 #include "../../../../../timming.hpp"
  28
  29
  30 boost::mutex m;
  31
  32 #if defined BOOST_THREAD_USES_CHRONO
  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 #else
  41 #endif
  42
  43 const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
  44
  45 void f()
  46 {
  47 #if defined BOOST_THREAD_USES_CHRONO
  48   t0 = Clock::now();
  49   {
  50     boost::unique_lock<boost::mutex> ul(m);
  51     t1 = Clock::now();
  52   }
  53 #else
  54   //time_point t0 = Clock::now();
  55   //time_point t1;
  56   {
  57     boost::unique_lock<boost::mutex> ul(m);
  58     //t1 = Clock::now();
  59   }
  60   //ns d = t1 - t0 - ms(250);
  61   //BOOST_TEST(d < max_diff);
  62 #endif
  63 }
  64
  65 int main()
  66 {
  67   m.lock();
  68   boost::thread t(f);
  69 #if defined BOOST_THREAD_USES_CHRONO
  70   time_point t2 = Clock::now();
  71   boost::this_thread::sleep_for(ms(250));
  72   time_point t3 = Clock::now();
  73 #else
  74 #endif
  75   m.unlock();
  76   t.join();
  77
  78 #if defined BOOST_THREAD_USES_CHRONO
  79   ns sleep_time = t3 - t2;
  80   ns d_ns = t1 - t0 - sleep_time;
  81   ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns);
  82   // BOOST_TEST_GE(d_ms.count(), 0);
  83   BOOST_THREAD_TEST_IT(d_ms, max_diff);
  84   BOOST_THREAD_TEST_IT(d_ns, ns(max_diff));
  85 #endif
  86
  87   return boost::report_errors();
  88 }
  89
  90