Acquire Release Semantic
Explore the acquire-release semantic in C++ concurrency to understand how atomic operations synchronize between threads. Learn how acquire and release operations enforce ordering constraints for synchronization primitives like mutexes and condition variables, improving thread communication efficiency.
We'll cover the following...
There is no global synchronization between threads in the acquire-release semantic; there is only a synchronization between atomic operations on the same atomic variable. A write operation on one thread synchronizes with a read operation on another thread on the same atomic variable.
The acquire-release semantic is based on one key idea: a release operation synchronizes with an acquire operation on the same atomic and establishes an ordering constraint. This means all subsequent read and write operations cannot be moved before an acquire operation, and all read and write operations cannot be moved after a release operation.
...