forever loop
     Get semiphone (wait indefinitely until it is available)
     Is a free connection object available
         Yes, increment connection object, release semiphone, and exit loop
         None available, release semiphone, sleep a few clock ticks to allow context switch,
            then return to top of forever loop
end of forever loop

Result ConnnectionManager::getConnection()
{
     begin critical section (lock semaphore/mutex)
     result = no_available_conn
     search connections array for free slot
     if free slot found then
        mark it as busy
        result = selected_conn_handler
     end critical section (unlock semaphore/mutex)
     return result
}
 
void ConnectionManager::freeConnection(conn_handler)
{
     begin critical section (lock semaphore/mutex)
     find busy slot by conn_handler
     if found then
        mark it as free
     end critical section (unlock semaphore/mutex)
}

ConnectionManager::ConnectionManager()
{
     Prepare conn[N] array
     Initialize sem(N)
}
Result ConnectionManager::getConnection()
{
     sem.P(); // lock process if no available connections
     find free slot and return its handler
}
void ConnectionManager::freeConnection(conn_handler)
{
     find slot by conn_handler
     mark it as free
     sem.V(); // signal that free conn is available
}