2,246 papers · page 72 of 113
Many popular scripting languages such as Ruby, Python, and Perl include highly dynamic language constructs, such as an eval method that evaluates a string as program text. While these constructs allow terse and expressive code, they have traditionally obstructed static analysis. …
Software has spent the bounty of Moore's law by solving harder problems and exploiting abstractions, such as high-level languages, virtual machine technology, binary rewriting, and dynamic analysis. Abstractions make programmers more productive and programs more portable, but usu…
This paper describes our sampling-based profiler that exploits a processor's HPM (Hardware Performance Monitor) to collect information on running Java applications for use by the Java VM. Our profiler provides two novel features: Java-level event profiling and lightweight context…
Integrated development environments (IDEs) increase programmer productivity, providing rapid, interactive feedback based on the syntax and semantics of a language. A heavy burden lies on developers of new languages to provide adequate IDE support. Code generation techniques provi…
Current programming languages and techniques realize many features which allow their users to extend these languages on a semantic basis: classes, functions, interfaces, aspects and other entities can be defined. However, there is a lack of modern programming languages which are …
Programmers build large-scale systems with multiple languages to reuse legacy code and leverage languages best suited to their problems. For instance, the same program may use Java for ease-of-programming and C to interface with the operating system. These programs pose significa…
The Task Parallel Library (TPL) is a library for .NET that makes it easy to take advantage of potential parallelism in a program. The library relies heavily on generics and delegate expressions to provide custom control structures expressing structured parallelism such as map-red…
We present Chorus, a high-level parallel programming model suitable for irregular, heap-manipulating applications like mesh refinement and epidemic simulations, and JChorus, an implementation of the model on top of Java. One goal of Chorus is to express the dynamic and instance-d…
Software systems evolve over time. Currently we do not do a good job of documenting this evolution. This essay discusses the need to better document software evolution and introduces the Moving Picture Metaphor. Source Control Management systems are more like collections of still…
Multiple inheritance has long been plagued with the "diamond" inheritance problem, leading to solutions that restrict expressiveness, such as mixins and traits. Instead, we address the diamond problem directly, considering two difficulties it causes: ensuring a correct semantics …
This paper presents Flapjax, a language designed for contemporary Web applications. These applications communicate with servers and have rich, interactive interfaces. Flapjax provides two key features that simplify writing these applications. First, it provides event streams, a u…
This paper demonstrates how the cognitive model of the mind can explain the core fundamentals behind widely accepted design principles. The conclusion is that software design is largely a task of chunking analogies and presents a theory that is detailed enough to be accessible to…
Prior work has found call path profiles to be useful for optimizers and programmer-productivity tools. Unfortunately, previous approaches for collecting path profiles are expensive: they need to either execute additional instructions (to track calls and returns) or they need to w…
Model-driven development (MDD) is widely used to develop modern business applications. MDD involves creating models at different levels of abstractions. Starting with models of domain concepts, these abstractions are successively refined, using transforms, to design-level models …
We propose a novel online method of identifying the preferred NUMA nodes for objects with negligible overhead during the garbage collection time as well as object allocation time. Since the number of CPUs (or NUMA nodes) is increasing recently, it is critical for the memory manag…
Successful programming languages change as they age. They tend to become more complex, and eventually some features become outdated or are rarely used. Programming tools for these languages become more complex as well, since they have to support archaic features. Old programs are…
Object versioning refers to how an application can have access to previous states of its objects. Implementing this mechanism is hard because it needs to be efficient in space and time, and well integrated with the programming language. This paper presents HistOOry, an object ver…
During its formative decades the software community looked twice to the theories of Christopher Alexander for inspiration, both times failing to completely master the architect's most useful insights. Now a third opportunity presents itself with Alexander's recent publication, Th…
Design pattern density is a metric that measures how much of an object-oriented design can be understood and represented as instances of design patterns. Expert developers have long believed that a high design pattern density implies a high maturity of the design under inspection…
Bruce and Foster proposed the language LOOJ, an extension of Java with the notion of MyType, which represents the type of a self reference and changes its meaning along with inheritance. MyType is useful to write extensible yet type-safe classes for objects with recursive interfa…