What is "join point"

n. (context computing programming English) In aspect-oriented programming, a point at which advice (additional code) is triggered (a set of these constituting a pointcut).

In computer science, a join point is a point in the control flow of a program. In aspect-oriented programming a set of join points is called a pointcut. A join point is a specification of when, in the corresponding main program, the aspect code should be executed.

The join point is a point of execution in the base code where the advice specified in a corresponding pointcut is applied.

Conceptually, a join point exists where a precondition for a command in Hoare logic makes an assertion parametric upon the joint and several advice supplied by the different concerns at that point in a generalized abstract process, the unified thing composed from its concrete aspects being the pointcut.