Implementing Polymorphic Callbacks for Ada/C++ Bindings Maciej - PowerPoint PPT Presentation

Implementing Polymorphic Callbacks for Ada/C++ Bindings Maciej Sobczak

YAMI4 – Multilanguage Asynchronous Messaging Library User Programs Ada General-Purpose C++ General-Purpose Ada Core C++ Core Operating System

But this is a common problem! WWW request GUI events handlers DB stored Alarms procedures

One-page problem

Callbacks anatomy Object-Oriented Callback Object Action

Solution Ada user code Ada translation layer C wrapper C++ notifications

Problem Object-Oriented Callback Ada user code Object Ada translation layer Action C wrapper Object pointer is C++ notifications created in Ada and used in Ada

Problem Object-Oriented Callback Ada user code Object Ada translation layer Action C wrapper Procedure pointer is C++ notifications created in Ada but used in C++

Dependencies Ada C++