2,246 papers · page 106 of 113
The Choices operating system architecture [?, ?, ?] uses class hierarchies and object-oriented programming to facilitate the construction of customized operating systems for shared memory and networked multiprocessors. The software is being used in the Tapestry Parallel Computing…
A new algorithm for distributed garbage collection is presented. This algorithm collects distributed garbage incrementally and concurrently with user activity. It is the first incremental algorithm that is capable of collecting cyclic distributed garbage. Computational and networ…
The Data Structure Manager (DSM) combines object-oriented programming with semantic data modeling concepts in the context of the C language. DSM is a full-featured object-oriented language which includes single and multiple inheritance, class descriptor objects, metaclasses, choi…
The Smalltalk Model-View-Controller (MVC) user interface paradigm uses polling for its input control. The polling loops consume CPU cycles even when the user is not interacting with the interface. Applications using Smalltalk as their front-end often suffer unnecessary performanc…
At the core of any sophisticated software development and maintenance environment is a large mass of complex data. The data (the central data of the environment) is composed of smaller sets of data that can be related in complicated and often subtle ways. The user or developer of…
A multilevel secure object-oriented data model (using the ORION data model) is proposed for which mandatory security issues in the context of a database system is discussed. In particular the following issues are dealt with: (1) the security policy for the system, (2) handling po…
We discuss several issues related to the integration of inheritance and concurrency in an object-oriented language to support fine-grain parallel algorithms. We present a reflective extension of the actor model to implement inheritance mechanisms within the actor model. We demons…
This paper describes the design of a scientific prototyping environment in Smalltalk and discusses implementation strategies to achieve high performance interactive modeling of computationally intensive physical problems. Classes for scientific visualization, including contour pl…
The Opportunistic Garbage Collector (OGC) is a generational garbage collector for stock hardware and operating systems. While incorporating important features of previous systems, the OGC includes several innovations. A new bucket brigade heap organization supports advancement th…
Object-oriented programming languages support encapsulation, thereby improving the ability of software to be reused, refined, tested, maintained, and extended. The full benefit of this support can only be realized if encapsulation is maximized during the design process.We argue t…
This paper describes a new data abstraction mechanism in an object-oriented model of computing. The data abstraction mechanism described here has been devised in the context of the design of Sina/st language. In Sina/st no language constructs have been adopted for specifying inhe…
This paper describes a strategy to transform Data Flow Analysis into Object Oriented Design. This transformation is performed by extracting information from the Data Flow Model, by enriching with Design decision and by finally producing an Object Oriented Design Model. Semiformal…
There is a requirement for a stronger treatment of intentional concepts and more general inferential ability within database systems. A framework for achieving this will be described in terms of extensions to an object data model.
This paper describes an execution model being developed for distributed object-oriented in a message-passing multiple-instruction/multiple-data-stream (MIMD) environment. The objective is to execute an object-oriented program as concurrently as possible. Some opportunities for co…
AVANCE1 is an integrated application development and run-time system. It provides facilities for programming with shared and persistent objects, transactions and processes. The architecture is designed with decentralization in mind by having a large object identifier space and a …
A general concern about object-oriented systems has been whether or not they are able to meet the performance demands required to be useful for the development of significant production software systems. Attempts to evaluate this assertion have been hampered by a lack of meaningf…
We describe the design of a constraint-based window system for Smalltalk. This window system uses constraints to specify attributes of windows and relationships between them. Three classes of constraints are supported, one of which is implicit and not available for general use. T…
Fabrik is a visual programming environment - a kit of computational and user-interface components that can be “wired” together to build new components and useful applications. Fabrik diagrams utilize bidirectional dataflow connections as a shorthand for multiple paths of flow. Bu…