Mutex Types and Locking Methods

Explore the different mutex types in C++, such as recursive, timed, and shared mutexes, and understand locking techniques for managing shared data safely in multithreaded programs. Learn how to use std::shared_timed_mutex and std::shared_mutex for exclusive and shared locks, and discover the functions for locking with or without time constraints.

We'll cover the following...

std:shared_timed_mutex
Mutex try_lock methods

C++ has five different mutexes that can lock recursively (i.e., multiple layers of locking), tentative with and without time constraints.

Method	mutex	recursive_mutex	timed_mutex	recursive_timed_mutex	shared_timed_mutex
`m.lock`	yes	yes	yes	yes	yes
`m.unlock`	yes	yes	yes	yes	yes
`m.try_lock`	yes	yes	yes

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1.Introduction

2.A Quick Overview

3.Memory Model: The Contract

4.Memory Model: Atomics

5.Memory Model: Synchronization and Ordering Constraints

6.Memory Model: Fences

7.Multithreading: Threads

8.Multithreading: Shared Data

9.Multithreading: Local Data

10.Multithreading: Condition Variables

11.Multithreading: Tasks

12.Case Study: Calculate Sum of a Vector

13.Case Study: Thread-Safe Initialization of a Singleton

14.Case Study: Ongoing Optimization with CppMem

15.Parallel Algorithms of the Standard Template Library

16.The Future: C++20

17.Coding Examples

18.Best Practices

19.The Time Library

20.Glossary

21.About the Author

Mutex Types and Locking Methods