The properties of a capability-based protection mechanism to be incorporated in a language for concurrent programming are presented. The protection mechanism is first abstractly characterized in terms of a protection model; the components of the protection mechanism, that is, the objects, subjects, and protection rules which govern the accessing to the objects by the subjects, are defined.

Abstract In this paper a unified set of linguistic features for providing a very flexible range of resource management strategies is presented. These features may be embedded in an object oriented programming language with abstract data type definitions. Firstly some of the more frequently used resource management strategies are illustrated and the related problems of resource allocation, access and synchronization are discussed. Then linguistic mechanisms to allow static and dynamic resource allocation, static access control and synchronization are presented. Finally some examples, reflecting a wide range of resource management strategies, are discussed in order to illustrate the application of the proposed linguistic features.