ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/upgrade_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 upgrade_lock;
  18
  19 // explicit upgrade_lock(Mutex& m);
  20
  21
  22 #include <boost/thread/lock_types.hpp>
  23 #include <boost/thread/shared_mutex.hpp>
  24 #include <boost/thread/thread.hpp>
  25 #include <boost/detail/lightweight_test.hpp>
  26 #include <iostream>
  27 #include "../../../../../timming.hpp"
  28
  29 boost::shared_mutex m;
  30
  31 #if defined BOOST_THREAD_USES_CHRONO
  32 typedef boost::chrono::high_resolution_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 time_point t0;
  38 time_point t1;
  39 #else
  40 #endif
  41
  42 const ms max_diff(BOOST_THREAD_TEST_TIME_MS);
  43
  44 void f()
  45 {
  46 #if defined BOOST_THREAD_USES_CHRONO
  47   t0 = Clock::now();
  48   {
  49     boost::upgrade_lock<boost::shared_mutex> ul(m);
  50     t1 = Clock::now();
  51   }
  52 #else
  53   //time_point t0 = Clock::now();
  54   //time_point t1;
  55   {
  56     boost::upgrade_lock<boost::shared_mutex> ul(m);
  57     //t1 = Clock::now();
  58   }
  59   //ns d = t1 - t0 - ms(250);
  60   //BOOST_TEST(d < max_diff);
  61 #endif
  62 }
  63
  64 int main()
  65 {
  66   m.lock();
  67   boost::thread t(f);
  68 #if defined BOOST_THREAD_USES_CHRONO
  69   time_point t2 = Clock::now();
  70   boost::this_thread::sleep_for(ms(250));
  71   time_point t3 = Clock::now();
  72 #else
  73 #endif
  74   m.unlock();
  75   t.join();
  76
  77 #if defined BOOST_THREAD_USES_CHRONO
  78   ns sleep_time = t3 - t2;
  79   ns d_ns = t1 - t0 - sleep_time;
  80   ms d_ms = boost::chrono::duration_cast<boost::chrono::milliseconds>(d_ns);
  81   // BOOST_TEST_GE(d_ms.count(), 0);
  82   BOOST_THREAD_TEST_IT(d_ms, max_diff);
  83   BOOST_THREAD_TEST_IT(d_ns, ns(max_diff));
  84 #endif
  85
  86   return boost::report_errors();
  87 }
  88