ceph/src/boost/libs/thread/test/sync/mutual_exclusion/null_mutex/lock_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/null_mutex.hpp>
  16
  17 // class null_mutex;
  18
  19 // void lock();
  20
  21 #include <boost/thread/null_mutex.hpp>
  22 #include <boost/thread/thread.hpp>
  23 #include <boost/detail/lightweight_test.hpp>
  24 #include "../../../timming.hpp"
  25
  26 boost::null_mutex m;
  27
  28 #if defined BOOST_THREAD_USES_CHRONO
  29 typedef boost::chrono::high_resolution_clock Clock;
  30 typedef Clock::time_point time_point;
  31 typedef Clock::duration duration;
  32 typedef boost::chrono::milliseconds ms;
  33 typedef boost::chrono::nanoseconds ns;
  34 #else
  35 #endif
  36
  37 const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
  38
  39 void f()
  40 {
  41 #if defined BOOST_THREAD_USES_CHRONO
  42   time_point t0 = Clock::now();
  43   m.lock();
  44   time_point t1 = Clock::now();
  45   m.lock();
  46   m.unlock();
  47   m.unlock();
  48   ns d = t1 - t0 ;
  49   BOOST_THREAD_TEST_IT(d, ns(max_diff));
  50 #else
  51   //time_point t0 = Clock::now();
  52   m.lock();
  53   //time_point t1 = Clock::now();
  54   m.lock();
  55   m.unlock();
  56   m.unlock();
  57   //ns d = t1 - t0 ;
  58   //BOOST_TEST(d < max_diff);
  59 #endif
  60 }
  61
  62 int main()
  63 {
  64   m.lock();
  65   boost::thread t(f);
  66   m.unlock();
  67   t.join();
  68
  69   return boost::report_errors();
  70 }
  71
  72