{

boost::unique_lock<boost::mutex> lock(mutex);

std::cout << "count = " << ++count << std::endl;

{

boost::unique_lock<boost::mutex> lock(mutex);

BOOST_TEST(threads2.is_this_thread_in());

std::cout << "count = " << ++count << std::endl;

{

{

boost::thread_group threads;

for (int i = 0; i < 3; ++i)

threads.create_thread(&increment_count);

threads.join_all();

}

#if defined BOOST_THREAD_PROVIDES_INTERRUPTIONS

{

boost::thread_group threads;

for (int i = 0; i < 3; ++i)

threads.create_thread(&increment_count);

threads.interrupt_all();

threads.join_all();

}

#endif

{

boost::thread_group threads;

boost::thread* th = new boost::thread(&increment_count);

threads.add_thread(th);

BOOST_TEST(! threads.is_this_thread_in());

threads.join_all();

}

{

boost::thread_group threads;

boost::thread* th = new boost::thread(&increment_count);

threads.add_thread(th);

BOOST_TEST(threads.is_thread_in(th));

threads.remove_thread(th);

BOOST_TEST(! threads.is_thread_in(th));

th->join();

delete th;

}

{

{

boost::unique_lock<boost::mutex> lock(mutex);

boost::thread* th2 = new boost::thread(&increment_count_2);

threads2.add_thread(th2);

}

threads2.join_all();

}

return boost::report_errors();