Synchronous Message   A synchronous message is a message that pauses the flow of execution within the calling instance. The instance waits until the message is returned.

Explanation

A message that is sent synchronously assumes that the receiver is ready and listening and the caller waits for the completion of the operation and the return. It does not continue with the next steps in its execution until the receipt of a return.

Related Entries

Recursive Message   Similar Usage,  Graphically Similar A recursion message is related to a synchronous message if it is itself synchronous, and it is the caller and the receiver of the message.

Reply Message  Used Together A return message is related to a synchronous message as it explicitly represents the return of the synchronous message. The instance that sent the synchronous message resumes the next step in its execution upon the receipt of the return message.

Execution Occurrence  Used Together An activation is related to a synchronous message as the activation or focus of control (as it is sometimes called) continues until the receipt of the return message. It represents the time that the instance has paused its execution waiting for the return message.