Mark T Carges

US Patent:

52652505, Nov 23, 1993

Filed:

Mar 29, 1990

Appl. No.:

7/524182

Inventors:

Juan M. Andrade - Chatham NJ
Mark T. Carges - New Providence NJ
Stephen D. Felts - Rockaway NJ

Assignee:

AT&T Bell Laboratories - Murray Hill NJ

International Classification:

G06F 700

US Classification:

395650

Abstract:

Apparatus and method for performing an application-defined operation on data as part of a system-defined operation on the data. The apparatus and method are embodied in a distributed transaction processing system in which processes running on component systems which may be heterogeneous interact according to the client-server model. In the apparatus and method, a type is associated with the data and application-defined operations which are part of certain system-defined operations are defined for each type. The system-defined operations which the application-defined operations are part of include allocation, reallocation, and deallocation of buffers and sending buffers between clients and servers using remote procedure calls. In the allocation and reallocation operations, the application-defined operation is initialization; in the deallocation operation, it is uninitialization. In buffer sending, the application-defined operations include operations done on the buffer contents before sending, routing, encoding the buffer contents into a transfer syntax, operations done on the buffer contents after sending, decoding the buffer contents from the transfer syntax after receiving, and operations done on the buffer contents after receiving.