Modern C++ Programming Cookbook

How it works...

The preceding example represents two threads that share common data (in this case, an integer variable). One thread produces data after a lengthy computation (simulated with a sleep), and the other consumes it only after it is produced. To do so, they use a synchronization mechanism that uses a mutex and a condition variable that blocks the consuming thread until a notification arises from the producer thread indicating that data has been made available. The key in this communication channel is the condition variable that the consuming thread waits on until the producing thread notifies it. Both threads start about the same time. The producer thread begins a long computation that is supposed to produce data for the consuming ...