C++17 STL Cookbook

How to do it...

The code of this section contains two pairs of functions that ought to be executed by concurrent threads, and that acquire two resources in form of mutexes. One pair provokes a deadlock and the other avoids it. In the main function, we are going to try them out:

1. Let's first include all needed headers and declare that we use namespace std and chrono_literals:

      #include <iostream>      #include <thread>      #include <mutex>            using namespace std;      using namespace chrono_literals;

2. Then we instantiate two mutex objects which we need in order to run into a deadlock:

      mutex mut_a;      mutex mut_b;

3. In order to provoke a deadlock with two resources, we need two functions. One function tries to lock mutex A and then mutex B, while the other ...