| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |
The value of this variable identifies the default RPC port in the dynamic environment.
The variable is bound explicitly by the macro with-remote-port.
When an in-bound remote call is evaluated, the dynamic environment binds this variable to the port which received the call.
In user programs, it is unwise to bind or assign a value to this variable, whether by let-binding, lambda-binding, or using setf or setq.
An out-bound remote call is identified as a callback when the destination port is eq to the default port, and the default port has not been re-bound to some other port in the dynamic environment.
(defun remotely-called-function () (let ((in-port *rpc-port*)) (rcall 'foo) ;; this is a callback (with-remote-port (in-port) (rcall 'bar) ;; this is a callback ) (with-remote-port (other-port) (with-remote-port (in-port) (rcall 'bar) ;; this is NOT a callback ) ) (rcall 'bar) ;; this is a callback ))
See also rpc.htm for general information on the Remote Procedure Call utility in Allegro CL.
Copyright (c) 1998-2016, Franz Inc. Oakland, CA., USA. All rights reserved.
This page was not revised from the 8.1 page.
Created 2010.1.21.
| Allegro CL version 8.2 Unrevised from 8.1 to 8.2. 8.1 version |