shared object in pthread

Question

I want to write a sample program in which 16 threads have access to a shared object with huge size like 10gb. I know that I can use pthread_mutex_t to get the lock on the object, but how can I make it efficient so that two or more thread can modify disjoint part of the shared object simultaneously?

Answer 1

Maybe you can create an array of 10 pthread_mutex_t's, one for each 1gb range, and lock the appropriate mutex for the range you'll be modifying?