c++ pthread - How to make map access threadsafe?

Question

I have a map as member variable and multiple threads that access the map (read and write access). Now I have to ensure that only ONE thread have access to the map. But how do I dot that? What is the best solution for that?

Answer 1

Boost contains some nice lock implementations for shared access. Have a look at the documentation.

In your case you probably need a read-write lock because a mutual exclusion lock is probably overkill if you have a lot of reads and very few writes.