Keywords: perfbook_html

#### 14.2.10.2.1 LOCK Operations

A lock operation acts as a one-way permeable barrier. It guarantees that all memory operations after the LOCK operation will appear to happen after the LOCK operation with respect to the other components of the system.

Memory operations that occur before a LOCK operation may appear to happen after it completes.

A LOCK operation should almost always be paired with an UNLOCK operation.