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  1. Guillermo Polito, Stéphane Ducasse, Luc Fabresse, and Noury Bouraqadi. Virtual Smalltalk Images: Model and Applications. In IWST - International Workshop on Smalltalk Technology, Co-located within the 21th International Smalltalk Conference - 2013, 2013. PDF 
    Abstract

    Reflective architectures are a powerful solution for code browsing, debugging or in-language process handling. However, these reflective architectures show some limitations in edge cases of self-modification and self-monitoring. Modifying the modifier process or monitoring the monitor process in a reflective system alters the system itself, leading to the impossibility to perform some of those tasks properly. In this paper we analyze the problems of reflective architectures in the context of image based object-oriented languages and solve them by providing a first-class representation of an image: a virtualized image. We present Oz, our virtual image solution. In Oz, a virtual image is represented by an object space. Through an object space, an image can manipulate the internal structure and control the execution of other images. An Oz object space allows one to introspect and modify execution information such as processes, contexts, existing classes and objects. We show how Oz solves the edge cases of reflective architectures by adding a third participant, and thus, removing the self modification and self-observation constraints.