|
|
|
|
|
|
by Gladdyu
2701 days ago
|
|
|
The RAM does not know anything about locking, it's the cache coherence protocol. The CPU will request a cache line in exclusive state, it does the operation on the memory and ensures that during it has always been exclusive to that core. After all the other cores will observe the change (and depending on the memory model+ordering, the operations that have/will happen before and after). |
|
|