Does Qvector need a mutex?

Question

Qt

There is a UDP class, a vector is defined in it (plays the role of a buffer), QUdpsocket is also defined, which is bound to the port and, at each signal, calls the function of reading data from the socket and then writing to the vector, there is also a couple of functions for receiving data from the vector.
The essence of the question is that I tested and if the vector is entered data from the socket and at the same time another function I receive data from the vector of the error does not occur. Whether it is necessary to be reinsured by a mutex?
Or what architecture to make different if a huge amount of data is sent to the socket and it cannot be processed in real time without a buffer))?

Answer 1

Any descendant of QObject is not thread safe.
Socket operations using QObject descendants from different threads are not safe, even with locks. To use a socket descriptor in any way in different threads, they must be unhooked from the controlling successor of QObject.