What is transactional memory and what would it change in C++ programming (C++20)

Question

One of the proposed features for C++20 is transactional memory.

What is it? Is it going to simplify multithreaded programming in C++?

Keratoid

Proposed for C++20? Didn't they agree to keep it as a TS as long as they have sufficient user experience to propose it as a feature for the IS? – Bobstay

I don't know much about c++, but transactional-memory is pretty much exactly what it says on the tin: it is memory that is transactional, exactly like in a database. Memory can only be modified inside a transaction, and if two threads modify the same piece of memory at the same time, (at least one of) the transaction(s) is/are rolled back and retried. – Responsible

I tried to summaries TM a bit as a response to this question. #41830338. Have a look and let me know if you need further info. – Briard