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
  27
  28 boost::mutex m;
  29
  30 #if defined BOOST_THREAD_USES_CHRONO
  31 typedef boost::chrono::system_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 #else
  37 #endif
  38
  39 void f()
  40 {
  41 #if defined BOOST_THREAD_USES_CHRONO
  42   time_point t0 = Clock::now();
  43   time_point t1;
  44   {
  45     boost::unique_lock<boost::mutex> ul(m);
  46     t1 = Clock::now();
  47   }
  48   ns d = t1 - t0 - ms(250);
  49   // This test is spurious as it depends on the time the thread system switches the threads
  50   BOOST_TEST(d < ns(2500000)+ms(1000)); // within 2.5ms
  51 #else
  52   //time_point t0 = Clock::now();
  53   //time_point t1;
  54   {
  55     boost::unique_lock<boost::mutex> ul(m);
  56     //t1 = Clock::now();
  57   }
  58   //ns d = t1 - t0 - ms(250);
  59   // This test is spurious as it depends on the time the thread system switches the threads
  60   //BOOST_TEST(d < ns(2500000)+ms(1000)); // within 2.5ms
  61 #endif
  62 }
  63
  64 int main()
  65 {
  66   m.lock();
  67   boost::thread t(f);
  68 #if defined BOOST_THREAD_USES_CHRONO
  69   boost::this_thread::sleep_for(ms(250));
  70 #else
  71 #endif
  72   m.unlock();
  73   t.join();
  74
  75   return boost::report_errors();
  76 }
  77
  78