ceph/src/boost/libs/thread/test/sync/mutual_exclusion/locks/nested_strict_lock/default_pass.cpp

   1 // Copyright (C) 2012 Vicente J. Botet Escriba
   2 //
   3 //  Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 //  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
   5
   6 // <boost/thread/locks.hpp>
   7
   8 // template <class Mutex> class nested_strict_lock;
   9
  10 // nested_strict_lock(Mutex &);
  11
  12 #include <boost/thread/lock_types.hpp>
  13 #include <boost/thread/strict_lock.hpp>
  14 #include <boost/thread/mutex.hpp>
  15 #include <boost/thread/thread.hpp>
  16 #include <boost/detail/lightweight_test.hpp>
  17
  18 #ifdef BOOST_THREAD_USES_CHRONO
  19 typedef boost::chrono::high_resolution_clock Clock;
  20 typedef Clock::time_point time_point;
  21 typedef Clock::duration duration;
  22 typedef boost::chrono::milliseconds ms;
  23 typedef boost::chrono::nanoseconds ns;
  24 #endif
  25
  26 boost::mutex m;
  27
  28 void f()
  29 {
  30 #ifdef BOOST_THREAD_USES_CHRONO
  31   time_point t0 = Clock::now();
  32   time_point t1;
  33   boost::unique_lock<boost::mutex> lg(m);
  34   {
  35     boost::nested_strict_lock<boost::unique_lock<boost::mutex> > nlg(lg);
  36     t1 = Clock::now();
  37   }
  38   ns d = t1 - t0 - ms(250);
  39   // This test is spurious as it depends on the time the thread system switches the threads
  40   BOOST_TEST(d < ns(2500000)+ms(1000)); // within 2.5ms
  41 #else
  42   //time_point t0 = Clock::now();
  43   //time_point t1;
  44   boost::unique_lock<boost::mutex> lg(m);
  45   {
  46     boost::nested_strict_lock<boost::unique_lock<boost::mutex> > nlg(lg);
  47     //t1 = Clock::now();
  48   }
  49   //ns d = t1 - t0 - ms(250);
  50   // This test is spurious as it depends on the time the thread system switches the threads
  51   //BOOST_TEST(d < ns(2500000)+ms(1000)); // within 2.5ms
  52 #endif
  53 }
  54
  55 int main()
  56 {
  57   {
  58   m.lock();
  59   boost::thread t(f);
  60 #ifdef BOOST_THREAD_USES_CHRONO
  61   boost::this_thread::sleep_for(ms(250));
  62 #endif
  63   m.unlock();
  64   t.join();
  65   }
  66
  67   return boost::report_errors();
  68 }