Condition handling in a multi-language computer program

Details Condition handling in a multi-language computer program Condition handling in a multi-language computer program

1995-02-13

1997-05-13

Lall, Parshotam S.

395500, G06F 946

Patent

active

056301375

ABSTRACT:
A condition handling method and means capable of handling programs written in a plurality computer programming languages is created by a set of routines which implement the Common Condition Handling (CCH) function. These routines have entry points which are declared as external or entry variables which enables application programs to link to them. The compilers and application programs can then interact with the condition handling process by calling or branching to the entry points in the common condition handling code when the program is executing. Language specific condition handling routines and user condition handlers are invoked using a last-in-first-out (LIFO) queue to associate the handlers with the current stack frame. Any handler may respond to the CCH with one of three types of requests: Resume, Percolate, and Promote. A separate means is provided for registering Exit Handlers and to move the resume cursor.

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