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By not only enabling a component-oriented, service-driven model of software development but also going a long way towards _enforcing_ this, OSGi opens up a new world of possibilities and a new marketplace for innovative products based on synergies with and between other software which is installed on the user's execution platform. However some fundamental issues remain unresolved. Because OSGi only offers application segregation based on class loaders, it cannot protect the execution platform from (deliberate or accidental) "denial of service" attacks in which one service consumes so much CPU time, heap space, or other resources such as OS threads that other services are unable to do their job. In this paper we look at the possibilities for monitoring resource sage on a per-bundle basis and at the issued this raises.
Chris Gray has been working with embedded and real-time software for over 30 years, and with OSGi since the beginning of this century. He is also the principal maintainer of the Mika embedded VM.
Christer Larsson CEO and Co-founder Makewave AB Chruster has been involved in the development of the OSGi technology since 1998, taking part in the design of Ericsson's e-box concept which influenced the first releases of the OSGi specification to a large degree. He is currently the CEO of Makewave and the VP EMEA of the OSGi Alliance. Christer is also deeply involved in the open source OSGi project Knopflerfish