//// initialize the shared memory objects
void testSharedMemTool::initializeSharedMemory()
{
boost::interprocess::shared_memory_object::remove("mmDaqSharedMemory");
boost::interprocess::named_condition::remove("mmDaqSharedCondition");
boost::interprocess::named_mutex::remove("mmDaqSharedMutex");
if(!m_shm_manager)
m_shm_manager = new boost::interprocess::managed_shared_memory(boost::interprocess::open_or_create,
"mmDaqSharedMemory",
(104857600 * 10) );
if(!m_shm_condition)
m_shm_condition = new boost::interprocess::named_condition(boost::interprocess::open_or_create,
"mmDaqSharedCondition");
m_shm_eventNumber = m_shm_manager->find_or_construct<uint64_t>("mmDaqSharedEventNumber")(0);
m_shm_eventinfo_vector = m_shm_manager->construct<ShmemCharStringVector>
("mmDaqSharedEventData")
(m_shm_manager->get_allocator<ShmemCharVectorAllocator>());
boost::interprocess::named_mutex shm_mutex(boost::interprocess::open_or_create, "mmDaqSharedMutex");
boost::interprocess::scoped_lock< boost::interprocess::named_mutex > lock(shm_mutex,
boost::interprocess::defer_lock_type());
}
void testSharedMemTool::sendData()
{
std::cout << "testSharedMemTool::sendData" << std::endl;
boost::interprocess::named_mutex shm_mutex(boost::interprocess::open_or_create, "mmDaqSharedMutex");
boost::interprocess::scoped_lock< boost::interprocess::named_mutex > lock(shm_mutex,
boost::interprocess::defer_lock_type());
// m_shm_condition->notify_all();
int n = 0;
while(n<1) {
try {
std::cout << "in try" << std::endl;
boost::posix_time::ptime timeout(boost::posix_time::second_clock::universal_time() + boost::posix_time::seconds(5));
// if(m_shm_condition->timed_wait(lock, timeout)) {
if(!lock.timed_lock(timeout)) {
std::cout << " *** DATAWRITER : LOCK TIMED OUT *** " << std::endl;
}
else {
std::cout << "in else" << std::endl;
sendEventNumber();
sendEventInfo();
m_shm_condition->notify_all();
// m_shm_condition->wait(lock);
}
// m_shm_condition->wait(lock);
if(lock) {
std::cout << " *** DATAWRITER : unlocking *** " << std::endl;
lock.unlock();
std::cout << " *** DATAWRITER : SHM_MUTEX UNLCOKED *** " << std::endl;
}
} // try
catch(boost::interprocess::interprocess_exception &e) {
std::cout << " *** DATAWRITER : ERROR :: " << e.what() << std::endl;
}
n++;
} // while
//int n=0;
//while(n<1000) {
// sendEventNumber();
// sendEventInfo();
// n++;
//}
return;
}
void testSharedMemTool::sendData()
{
boost::interprocess::named_mutex shm_mutex(boost::interprocess::open_or_create, "mmDaqSharedMutex");
boost::interprocess::scoped_lock< boost::interprocess::named_mutex > lock(shm_mutex,
boost::interprocess::defer_lock_type());
std::cout << "testSharedMemTool::sendData" << std::endl;
// m_shm_condition->notify_all();
int n = 0;
while(n<100000) {
// if(n%1000==0)
// std::cout << "Done: "<< 1000/100000*100 <<"%\n";
usleep(5000-rand()%1900);
try {
// std::cout << "in try" << std::endl;
boost::posix_time::ptime timeout(boost::posix_time::second_clock::universal_time() + boost::posix_time::seconds(5));
// if(m_shm_condition->timed_wait(lock, timeout)) {
if(!lock.timed_lock(timeout)) {
// std::cout << " *** DATAWRITER : LOCK TIMED OUT *** " << std::endl;
//aikoulou: nah, doesnt work
// std::cout << " *** TRYING TO FORCE UNLOCK *** " << std::endl;
// lock.unlock();
}
else
{
sendEventNumber();
sendEventInfo();
m_shm_condition->notify_all();
// m_shm_condition->wait(lock);
}
// m_shm_condition->wait(lock);
if(lock) {
lock.unlock();
}
} // try
catch(boost::interprocess::interprocess_exception &e) {
std::cout << " *** DATAWRITER : ERROR :: " << e.what() << std::endl;
}
n++;
} // while
return;
}
