Thread synchronization

Up until now, whatever examples we have seen in this book had all threads independent of each other. But rarely, in real life, do you find examples where threads operate on data and terminate without passing results to any other threads. So there has to be some mechanism for threads to communicate with each other, and that is why the concept of shared memory is explained in this section. When many threads work in parallel and operate on the same data or read and write from the same memory location, there has to be synchronization between all threads. Thus, thread synchronization is also explained in this section. The last part of this section explains atomic operations, which are very useful in read-modified write conditions.