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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)
- #define BOOST_THREAD_VERSION 2
- #define BOOST_THREAD_PROVIDES_INTERRUPTIONS
- #define BOOST_TEST_MODULE Boost.Threads: shared_mutex test suite
- #include <boost/test/unit_test.hpp>
- #include <boost/thread/thread.hpp>
- #include <boost/thread/xtime.hpp>
- #include "./util.inl"
- #include "./shared_mutex_locking_thread.hpp"
- #include <iostream>
- #define CHECK_LOCKED_VALUE_EQUAL(mutex_name,value,expected_value) \
- { \
- boost::unique_lock<boost::mutex> lock(mutex_name); \
- BOOST_CHECK_EQUAL(value,expected_value); \
- }
- BOOST_AUTO_TEST_CASE(test_multiple_readers)
- {
- std::cout << __LINE__ << std::endl;
- 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::unique_lock<boost::mutex> 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::unique_lock<boost::mutex> 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);
- }
- BOOST_AUTO_TEST_CASE(test_only_one_writer_permitted)
- {
- std::cout << __LINE__ << std::endl;
- 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::unique_lock<boost::mutex> 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);
- }
- BOOST_AUTO_TEST_CASE(test_reader_blocks_writer)
- {
- std::cout << __LINE__ << std::endl;
- 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::unique_lock<boost::mutex> 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::unique_lock<boost::mutex> 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);
- }
- BOOST_AUTO_TEST_CASE(test_unlocking_writer_unblocks_all_readers)
- {
- std::cout << __LINE__ << std::endl;
- 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::unique_lock<boost::mutex> 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::unique_lock<boost::mutex> 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);
- }
- BOOST_AUTO_TEST_CASE(test_unlocking_last_reader_only_unblocks_one_writer)
- {
- std::cout << __LINE__ << std::endl;
- 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::unique_lock<boost::mutex> finish_reading_lock(finish_reading_mutex);
- boost::mutex finish_writing_mutex;
- boost::unique_lock<boost::mutex> 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::unique_lock<boost::mutex> 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::unique_lock<boost::mutex> 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);
- }
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