Smalltalk-80: the language and its implementation
Smalltalk-80: the language and its implementation
Subject-oriented programming: a critique of pure objects
OOPSLA '93 Proceedings of the eighth annual conference on Object-oriented programming systems, languages, and applications
Garbage collection: algorithms for automatic dynamic memory management
Garbage collection: algorithms for automatic dynamic memory management
MultiJava: modular open classes and symmetric multiple dispatch for Java
OOPSLA '00 Proceedings of the 15th ACM SIGPLAN conference on Object-oriented programming, systems, languages, and applications
ActorNet: an actor platform for wireless sensor networks
AAMAS '06 Proceedings of the fifth international joint conference on Autonomous agents and multiagent systems
Virtual Machines: Versatile Platforms for Systems and Processes (The Morgan Kaufmann Series in Computer Architecture and Design)
Proceedings of the seventh workshop on Domain-Specific Aspect Languages
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High-level language virtual machine implementations offer a challenging domain for modularization, not only because they are inherently complex, but also because efficiency is not likely to be traded for modularity. The central data structure used throughout the VM, the object layout, cannot be succinctly modularised by current aspect technology, as provisions for static crosscutting are not fine-grained enough. This position paper motivates the need for a declarative, domain-specific language for handling the tangled object layout concern. Based on observations in real-world VM implementations, we propose such a language, D4OL. It combines a two-level layout mapping, constraints and an engine to divide responsibilities between VM component and VM developers. We consider a domain-specific language like D4OL a necessary complement to behavioural aspect languages in order to modularize VM implementations.