Disable job requests while running job pattern

A software design pattern disable job requests while running job is, as the name suggests literally, disable job requests[?] when necessary to use this pattern.

See also: It's an operator problem[?], Observer pattern, Execute around method[?], Category pattern[?], User interface, User interface patterns[?], Disinformation banned[?], Category concurrency patterns[?], Balking pattern, Guarded suspension