Understanding Std:Shared_mutex from C++17
7 days ago
- #Mutex
- #C++17
- #Concurrency
- Introduction to `std::shared_mutex` in C++17, a reader-writer mutex for read-mostly data structures.
- Comparison between `std::mutex` and `std::shared_mutex`, highlighting the latter's ability to allow multiple concurrent reads.
- Example of a thread-safe counter using `std::mutex` and its limitations with exclusive access.
- Refactoring the counter example with `std::shared_mutex` to enable concurrent reads and exclusive writes.
- Performance measurement showing significant gains with `std::shared_mutex` in read-heavy scenarios.
- Real-world application example: a read-mostly cache using `std::shared_mutex` for improved scalability.
- Common pitfalls of `std::shared_mutex`, including recursive locking and upgrade deadlocks.
- Overview of newer concurrency tools in C++20 and above, emphasizing `std::shared_mutex`'s continued relevance.
- Summary of `std::shared_mutex` benefits for read-mostly data structures and its simplicity compared to other synchronization techniques.