How to make a thread-safe descendant of the QAbstractItemModel class in Qt?

Question

Programming

Subject. Tell me in which direction to dig (or where you can peep raw)

Answer 1

It will be much better if you tell the whole problem. Otherwise, there is a risk that we will waste time here helping you sort the engine through the muffler.
Under which widget will the model lie?
Why is there multithreading?
And other interesting questions.

Answer 2

Define the model as if you don't care about thread safety. And then wrap the call of thread-safe methods with Qmutex.