ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/lock_guard/default_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 lock_guard;
  18
  19 // lock_guard(Mutex &);
  20
  21 #include <boost/thread/lock_guard.hpp>
  22 #include <boost/thread/mutex.hpp>
  23 #include <boost/thread/thread.hpp>
  24 #include <boost/detail/lightweight_test.hpp>
  25
  26 #ifdef BOOST_THREAD_USES_CHRONO
  27 typedef boost::chrono::high_resolution_clock Clock;
  28 typedef Clock::time_point time_point;
  29 typedef Clock::duration duration;
  30 typedef boost::chrono::milliseconds ms;
  31 typedef boost::chrono::nanoseconds ns;
  32 #endif
  33
  34 boost::mutex m;
  35
  36 #ifdef BOOST_THREAD_PLATFORM_WIN32
  37 const ms max_diff(250);
  38 #else
  39 const ms max_diff(75);
  40 #endif
  41
  42 void f()
  43 {
  44 #ifdef BOOST_THREAD_USES_CHRONO
  45   time_point t0 = Clock::now();
  46   time_point t1;
  47   {
  48     boost::lock_guard<boost::mutex> lg(m);
  49     t1 = Clock::now();
  50   }
  51   ns d = t1 - t0 - ms(250);
  52   BOOST_TEST(d < max_diff);
  53 #else
  54   //time_point t0 = Clock::now();
  55   //time_point t1;
  56   {
  57     boost::lock_guard<boost::mutex> lg(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 #ifdef BOOST_THREAD_USES_CHRONO
  70   boost::this_thread::sleep_for(ms(250));
  71 #endif
  72   m.unlock();
  73   t.join();
  74
  75   return boost::report_errors();
  76 }