Persistent programming languages don't use explicit locking. Rather, objects (or their accompanying pages) must be locked when accessed. The user may establish page access restrictions (no, read,...

Extracted text: Persistent programming languages don't use explicit locking. Rather, objects (or their accompanying pages) must be locked when accessed. The user may establish page access restrictions (no, read, write) that affect memory access (see the Unix mprotect command, for example). Explain how the access- protection mechanism may be utilized for page-level locking in a persistent programming language.