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
  28
  29 boost::mutex m;
  30
  31 #if defined BOOST_THREAD_USES_CHRONO
  32 typedef boost::chrono::system_clock Clock;
  33 typedef Clock::time_point time_point;
  34 typedef Clock::duration duration;
  35 typedef boost::chrono::milliseconds ms;
  36 typedef boost::chrono::nanoseconds ns;
  37 #else
  38 #endif
  39
  40 #ifdef BOOST_THREAD_PLATFORM_WIN32
  41 const ms max_diff(250);
  42 #else
  43 const ms max_diff(75);
  44 #endif
  45
  46 void f()
  47 {
  48 #if defined BOOST_THREAD_USES_CHRONO
  49   time_point t0 = Clock::now();
  50   time_point t1;
  51   {
  52     boost::unique_lock<boost::mutex> ul(m);
  53     t1 = Clock::now();
  54   }
  55   ns d = t1 - t0 - ms(250);
  56   std::cout << "diff= " << d.count() << std::endl;
  57   std::cout << "max_diff= " << max_diff.count() << std::endl;
  58   BOOST_TEST(d < max_diff);
  59 #else
  60   //time_point t0 = Clock::now();
  61   //time_point t1;
  62   {
  63     boost::unique_lock<boost::mutex> ul(m);
  64     //t1 = Clock::now();
  65   }
  66   //ns d = t1 - t0 - ms(250);
  67   //BOOST_TEST(d < max_diff);
  68 #endif
  69 }
  70
  71 int main()
  72 {
  73   m.lock();
  74   boost::thread t(f);
  75 #if defined BOOST_THREAD_USES_CHRONO
  76   boost::this_thread::sleep_for(ms(250));
  77 #else
  78 #endif
  79   m.unlock();
  80   t.join();
  81
  82   return boost::report_errors();
  83 }
  84
  85