ceph/src/boost/libs/thread/test/sync/mutual_exclusion/shared_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) 2012 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/shared_mutex.hpp>
  16
  17 // class shared_mutex;
  18
  19 // void lock();
  20
  21 #include <boost/thread/shared_mutex.hpp>
  22 #include <boost/thread/thread.hpp>
  23 #include <boost/detail/lightweight_test.hpp>
  24
  25 boost::shared_mutex m;
  26
  27 #if defined BOOST_THREAD_USES_CHRONO
  28 typedef boost::chrono::system_clock Clock;
  29 typedef Clock::time_point time_point;
  30 typedef Clock::duration duration;
  31 typedef boost::chrono::milliseconds ms;
  32 typedef boost::chrono::nanoseconds ns;
  33 #else
  34 #endif
  35 void f()
  36 {
  37 #if defined BOOST_THREAD_USES_CHRONO
  38   time_point t0 = Clock::now();
  39   m.lock();
  40   time_point t1 = Clock::now();
  41   m.unlock();
  42   ns d = t1 - t0 - ms(250);
  43   // This test is spurious as it depends on the time the thread system switches the threads
  44   BOOST_TEST(d < ns(2500000)+ms(1000)); // within 2.5ms
  45 #else
  46   //time_point t0 = Clock::now();
  47   m.lock();
  48   //time_point t1 = Clock::now();
  49   m.unlock();
  50   //ns d = t1 - t0 - ms(250);
  51   // This test is spurious as it depends on the time the thread system switches the threads
  52   //BOOST_TEST(d < ns(2500000)+ms(1000)); // within 2.5ms
  53 #endif
  54 }
  55
  56 int main()
  57 {
  58   m.lock();
  59   boost::thread t(f);
  60 #if defined BOOST_THREAD_USES_CHRONO
  61   boost::this_thread::sleep_for(ms(250));
  62 #else
  63 #endif
  64   m.unlock();
  65   t.join();
  66
  67   return boost::report_errors();
  68 }
  69