On flexible support for mobile objects

CORRELATE is a concurrent object-oriented language with a flexible run time system that enables the instantiation of application specific run time objects. We have exploited this capability in the development of mobile agents for large scale distributed computing systems, such as the Internet. We discuss some key elements of the run time system. We illustrate how the system architecture supports mobile objects, we discuss what it requires from the operating system and how we aim at evolving towards more flexibility.