libs/thread/example/strict_lock.cpp

   1 // Copyright (C) 2012 Vicente Botet
   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 #define BOOST_THREAD_VERSION 4
   7
   8 #include <boost/thread/mutex.hpp>
   9 #include <boost/thread/lock_traits.hpp>
  10 #include <boost/thread/shared_mutex.hpp>
  11 #include <boost/thread/strict_lock.hpp>
  12 #include <boost/thread/lock_types.hpp>
  13 #include <iostream>
  14
  15
  16 BOOST_STATIC_ASSERT(boost::is_strict_lock<boost::strict_lock<boost::mutex> >::value);
  17 BOOST_CONCEPT_ASSERT(( boost::BasicLockable<boost::mutex> ));
  18 BOOST_CONCEPT_ASSERT(( boost::StrictLock<boost::strict_lock<boost::mutex> > ));
  19
  20 int main()
  21 {
  22   {
  23     boost::mutex mtx;
  24     boost::strict_lock<boost::mutex> lk(mtx);
  25     std::cout << __FILE__ << std::endl;
  26   }
  27   {
  28     boost::timed_mutex mtx;
  29     boost::unique_lock<boost::timed_mutex> lk(mtx);
  30     boost::nested_strict_lock<boost::unique_lock<boost::timed_mutex> > nlk(lk);
  31     std::cout << __FILE__ << std::endl;
  32   }
  33   {
  34     boost::mutex mtx;
  35     boost::unique_lock<boost::mutex> lk(mtx, boost::defer_lock);
  36     boost::nested_strict_lock<boost::unique_lock<boost::mutex> > nlk(lk);
  37     std::cout << __FILE__ << std::endl;
  38   }
  39   return 0;
  40 }