PG RT is an environment for the integration of tools and systems for instrumentation, performance visualization, and analysis of complex real-time systems. A part of PG RT is the Visual Objects framework for rapid prototyping and development of object-oriented, online, adaptive, application-specific performance visualizations. PG RT uses CORBA technology to provide real-time applications and systems with convenient access to visual objects. Many complex visual objects may be distributed over a number of graphical workstations in a local area network to provide rich visualization in real time. The visual objects can be directly accessed from a distributed real-time application, or--- in order to eliminate the intrusion of CORBA to the application---via a distributed instrumentation system called BRISK, which is a component of PG RT . We demonstrate the PG RT environment by instrumenting and visualizing a distributed real-time multimedia application. 1 Introduction An abili...

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The unit of concern for most development tools is the file: Text editors open files; Compilers compile source contained in files; Version control systems keep track of changes made to files. Yet, for many tasks, the disposition of code in files is not the best for what developers want to accomplish, but tools do not allow them to change it easily. We call this the tyranny of the file decomposition and propose to replace files with smaller code units, arranged dynamically into code views by the development environment under the guidance of the developer. This permits code arrangements better suited for different tasks, improving development productivity.

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