7,482 papers · page 309 of 375
For performance reasons, client applications often need to influence the implementation strategies of libraries whose services they use. If an object-oriented library contains multiple service classes customized for different usage patterns, applications can influence service imp…
article Free Access Share on Methodology standards: help or hindrance? Authors: Grady Booch Rational Software Corporation Rational Software CorporationView Profile , Brian Henderson-Sellers University of Technology, Sydney University of Technology, SydneyView Profile , Ivar Jacob…
Two major issues related to storing program information in an OODB are sharing and clustering. The former is important since it prevents the database from consuming excessive disk space, while the latter is crucial, since it keeps clients running without thrashing. In our databas…
Concrete type information is invaluable for program optimization. The determination of concrete types in object-oriented languages is a flow sensitive global data flow problem. It is made difficult by dynamic dispatch (virtual function invocation) and first class functions (and s…
This paper presents an algorithm that performs garbage collection in distributed systems of active objects (i.e., objects having their own threads of control). Our proposition extends the basic marking algorithm proposed by Kafura in [1] to a distributed environment. The proposed…
Object-oriented databases are being increasingly used to model non-standard applications that emphasize modularity, composition, and rapid prototyping. A semantic locking protocol is presented for transaction management for such object-oriented databases. In particular, the proto…
ODE: A SELF-GUIDED, SCENARIO-BASED LEARNING ENVIRONMENT FOR OBJECT-ORIENTED DESIGN PRINCIPLES Scott P. Robertson,* John M. Carroll,* Robert L. Mack, Mary Beth Rosson,* Sherman R. Alpert, Jurgen Koenemann-Belliveau” IBM Research T. J. Watson Research Center 30 Saw Mill River Road …
Large mainframe installations need and want to exploit the advantages of Object Technology (OT), but without totally abandoning their legacy environments. Implementing Object Orientation in such a COBOL/CICS/DB2 environment is a challenge: there is neither language support, nor d…
As shown by the work of Bertrand Meyer, it is possible to simulate genericity using inheritance, but not vice-versa. This is because genericity is a parameterization mechanism with no way to deal with the polymorphic typing introduced using inheritance. Nevertheless, if we focus …
Scientific and engineering software is often produced by integration of existing software components of the size of a whole program. However, on the average, scientific software was not developed for reusability and is quite distant from the user model of the application problem;…
In spite of growing needs in many areas, there is a lack of powerful graphical interfaces for interacting with large and complex sets of objects. Debugging, management and monitoring tools for object-oriented distributed systems or databases, for instance, need new interfaces tha…
In this paper we show how to augment object-oriented application interfaces with enhanced specifications that include sequencing constraints called protocols. Protocols make explicit the relationship between messages (methods) supported by the application. These relationships are…
Program slices have potential uses in many software engineering applications. Traditional slicing algorithms, however, do not work correctly on programs that contain explicit jump statements. Two similar algorithms were proposed recently to alleviate this problem. Both require th…
Languages that support abstraction and modular structure, such as Standard ML, Modula, Ada, and (more or less) C++, may have deeply nested dependency hierarchies among source files. In ML the problem is particularly severe because ML's powerful parameterized module (functor) faci…
We present a pointer and array access checking technique that provides complete error coverage through a simple set of program transformations. Our technique, based on an extended safe pointer representation, has a number of novel aspects. Foremost, it is the first technique that…
Partial redundancy elimination is a code optimization with a long history of literature and implementation. In practice, its effectiveness depends on issues of naming and code shape. This paper shows that a combination of global reassociation and global value numbering can increa…
As microprocessor speeds increase, memory bandwidth is increasingly the performance bottleneck for microprocessors. This has occurred because innovation and technological improvements in processor design have outpaced advances in memory design. Most attempts at addressing this pr…
Existing methods for alias analysis of recursive pointer data structures are based on two approximation techniques: k-limiting, and store-based (or equivalently location or region-based) approximations, which blur distinction between elements of recursive data structures. Althoug…