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// (C) Copyright 2006-7 Anthony Williams
// Distributed under the Boost Software License, Version 1.0. (See
// accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
#include <boost/test/unit_test.hpp>
#include <boost/thread/thread.hpp>
#include <boost/thread/xtime.hpp>
#include <libs/thread/test/util.inl>
#include <libs/thread/test/shared_mutex_locking_thread.hpp>
#define CHECK_LOCKED_VALUE_EQUAL(mutex_name,value,expected_value) \
{ \
boost::mutex::scoped_lock lock(mutex_name); \
BOOST_CHECK_EQUAL(value,expected_value); \
}
void test_multiple_readers()
{
unsigned const number_of_threads=10;
boost::thread_group pool;
boost::shared_mutex rw_mutex;
unsigned unblocked_count=0;
unsigned simultaneous_running_count=0;
unsigned max_simultaneous_running=0;
boost::mutex unblocked_count_mutex;
boost::condition_variable unblocked_condition;
boost::mutex finish_mutex;
boost::mutex::scoped_lock finish_lock(finish_mutex);
try
{
for(unsigned i=0;i<number_of_threads;++i)
{
pool.create_thread(locking_thread<boost::shared_lock<boost::shared_mutex> >(rw_mutex,unblocked_count,unblocked_count_mutex,unblocked_condition,
finish_mutex,simultaneous_running_count,max_simultaneous_running));
}
{
boost::mutex::scoped_lock lk(unblocked_count_mutex);
while(unblocked_count<number_of_threads)
{
unblocked_condition.wait(lk);
}
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,number_of_threads);
finish_lock.unlock();
pool.join_all();
}
catch(...)
{
pool.interrupt_all();
pool.join_all();
throw;
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,max_simultaneous_running,number_of_threads);
}
void test_only_one_writer_permitted()
{
unsigned const number_of_threads=10;
boost::thread_group pool;
boost::shared_mutex rw_mutex;
unsigned unblocked_count=0;
unsigned simultaneous_running_count=0;
unsigned max_simultaneous_running=0;
boost::mutex unblocked_count_mutex;
boost::condition_variable unblocked_condition;
boost::mutex finish_mutex;
boost::mutex::scoped_lock finish_lock(finish_mutex);
try
{
for(unsigned i=0;i<number_of_threads;++i)
{
pool.create_thread(locking_thread<boost::unique_lock<boost::shared_mutex> >(rw_mutex,unblocked_count,unblocked_count_mutex,unblocked_condition,
finish_mutex,simultaneous_running_count,max_simultaneous_running));
}
boost::thread::sleep(delay(2));
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,1U);
finish_lock.unlock();
pool.join_all();
}
catch(...)
{
pool.interrupt_all();
pool.join_all();
throw;
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,number_of_threads);
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,max_simultaneous_running,1u);
}
void test_reader_blocks_writer()
{
boost::thread_group pool;
boost::shared_mutex rw_mutex;
unsigned unblocked_count=0;
unsigned simultaneous_running_count=0;
unsigned max_simultaneous_running=0;
boost::mutex unblocked_count_mutex;
boost::condition_variable unblocked_condition;
boost::mutex finish_mutex;
boost::mutex::scoped_lock finish_lock(finish_mutex);
try
{
pool.create_thread(locking_thread<boost::shared_lock<boost::shared_mutex> >(rw_mutex,unblocked_count,unblocked_count_mutex,unblocked_condition,
finish_mutex,simultaneous_running_count,max_simultaneous_running));
{
boost::mutex::scoped_lock lk(unblocked_count_mutex);
while(unblocked_count<1)
{
unblocked_condition.wait(lk);
}
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,1U);
pool.create_thread(locking_thread<boost::unique_lock<boost::shared_mutex> >(rw_mutex,unblocked_count,unblocked_count_mutex,unblocked_condition,
finish_mutex,simultaneous_running_count,max_simultaneous_running));
boost::thread::sleep(delay(1));
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,1U);
finish_lock.unlock();
pool.join_all();
}
catch(...)
{
pool.interrupt_all();
pool.join_all();
throw;
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,2U);
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,max_simultaneous_running,1u);
}
void test_unlocking_writer_unblocks_all_readers()
{
boost::thread_group pool;
boost::shared_mutex rw_mutex;
boost::unique_lock<boost::shared_mutex> write_lock(rw_mutex);
unsigned unblocked_count=0;
unsigned simultaneous_running_count=0;
unsigned max_simultaneous_running=0;
boost::mutex unblocked_count_mutex;
boost::condition_variable unblocked_condition;
boost::mutex finish_mutex;
boost::mutex::scoped_lock finish_lock(finish_mutex);
unsigned const reader_count=10;
try
{
for(unsigned i=0;i<reader_count;++i)
{
pool.create_thread(locking_thread<boost::shared_lock<boost::shared_mutex> >(rw_mutex,unblocked_count,unblocked_count_mutex,unblocked_condition,
finish_mutex,simultaneous_running_count,max_simultaneous_running));
}
boost::thread::sleep(delay(1));
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,0U);
write_lock.unlock();
{
boost::mutex::scoped_lock lk(unblocked_count_mutex);
while(unblocked_count<reader_count)
{
unblocked_condition.wait(lk);
}
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,reader_count);
finish_lock.unlock();
pool.join_all();
}
catch(...)
{
pool.interrupt_all();
pool.join_all();
throw;
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,max_simultaneous_running,reader_count);
}
void test_unlocking_last_reader_only_unblocks_one_writer()
{
boost::thread_group pool;
boost::shared_mutex rw_mutex;
unsigned unblocked_count=0;
unsigned simultaneous_running_readers=0;
unsigned max_simultaneous_readers=0;
unsigned simultaneous_running_writers=0;
unsigned max_simultaneous_writers=0;
boost::mutex unblocked_count_mutex;
boost::condition_variable unblocked_condition;
boost::mutex finish_reading_mutex;
boost::mutex::scoped_lock finish_reading_lock(finish_reading_mutex);
boost::mutex finish_writing_mutex;
boost::mutex::scoped_lock finish_writing_lock(finish_writing_mutex);
unsigned const reader_count=10;
unsigned const writer_count=10;
try
{
for(unsigned i=0;i<reader_count;++i)
{
pool.create_thread(locking_thread<boost::shared_lock<boost::shared_mutex> >(rw_mutex,unblocked_count,unblocked_count_mutex,unblocked_condition,
finish_reading_mutex,simultaneous_running_readers,max_simultaneous_readers));
}
boost::thread::sleep(delay(1));
for(unsigned i=0;i<writer_count;++i)
{
pool.create_thread(locking_thread<boost::unique_lock<boost::shared_mutex> >(rw_mutex,unblocked_count,unblocked_count_mutex,unblocked_condition,
finish_writing_mutex,simultaneous_running_writers,max_simultaneous_writers));
}
{
boost::mutex::scoped_lock lk(unblocked_count_mutex);
while(unblocked_count<reader_count)
{
unblocked_condition.wait(lk);
}
}
boost::thread::sleep(delay(1));
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,reader_count);
finish_reading_lock.unlock();
{
boost::mutex::scoped_lock lk(unblocked_count_mutex);
while(unblocked_count<(reader_count+1))
{
unblocked_condition.wait(lk);
}
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,reader_count+1);
finish_writing_lock.unlock();
pool.join_all();
}
catch(...)
{
pool.interrupt_all();
pool.join_all();
throw;
}
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,unblocked_count,reader_count+writer_count);
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,max_simultaneous_readers,reader_count);
CHECK_LOCKED_VALUE_EQUAL(unblocked_count_mutex,max_simultaneous_writers,1u);
}
boost::unit_test::test_suite* init_unit_test_suite(int, char*[])
{
boost::unit_test::test_suite* test =
BOOST_TEST_SUITE("Boost.Threads: shared_mutex test suite");
test->add(BOOST_TEST_CASE(&test_multiple_readers));
test->add(BOOST_TEST_CASE(&test_only_one_writer_permitted));
test->add(BOOST_TEST_CASE(&test_reader_blocks_writer));
test->add(BOOST_TEST_CASE(&test_unlocking_writer_unblocks_all_readers));
test->add(BOOST_TEST_CASE(&test_unlocking_last_reader_only_unblocks_one_writer));
return test;
}
void remove_unused_warning()
{
//../../../boost/test/results_collector.hpp:40:13: warning: unused function 'first_failed_assertion' [-Wunused-function]
//(void)first_failed_assertion;
//../../../boost/test/tools/floating_point_comparison.hpp:304:25: warning: unused variable 'check_is_close' [-Wunused-variable]
//../../../boost/test/tools/floating_point_comparison.hpp:326:25: warning: unused variable 'check_is_small' [-Wunused-variable]
(void)boost::test_tools::check_is_close;
(void)boost::test_tools::check_is_small;
}
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