Is it necessary to lock the structure with a mutex if there is a concurrent write to different fields of the structure?

Question

go

Is it necessary to lock the structure with a mutex if there is a concurrent write to different fields of the structure?

Answer 1

Yes

Answer 2

None of the built-in types in Go are competitively safe in the language specification. In the current implementation, you can write concurrently to different fields of a pointer-type struct, i.e. an explicit * , map , slice or channel reference. There are no guarantees that such code will not fall in other implementations or on other architectures.