> I want to say it's Ada but I could be wrong. Yes, entry barriers: http://www.ada-auth.org/standards/12rm/html/RM-9-5-2.html#S0223 http://www.ada-auth.org/sta

> I want to say it's Ada but I could be wrong. Yes, entry barriers: http://www.ada-auth.org/standards/12rm/html/RM-9-5-2.html#S0223 http://www.ada-auth.org/standards/12rm/html/RM-9-5-2.html#S0... The consumer/producer routines (entries) conceptually belong to the object/resource that is operated on (protected object) but are executed by the calling task.