STL list usage
Use the queue to save the customer's request, adopt the first-in-first-out processing method, call push_back to add the request to the queue, call front to get the reference at the head of the queue, call empty to judge whether the queue is empty, because front returns a reference, so you must save it after getting it, and then call pop_front to delete the message at the head of the queue.
Code
# include
Std::list m_listMsg
M_listMsg.push_back (mg)
If (m_listMsg.empty ()) return
Std::string msg = m_listMsg.front ()
M_listMsg.pop_front ()
Note: locking is very necessary for data read and write protection. In order to use boost::mutex across platforms, you can refer to other chapters.
