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39th IEEE/ACM International Conference on Software Engineering Companion, ICSE-C 2017

作者： Hassan, Foyzul Wang, Xiaoyin University of Texas San Antonio United States

ISBN: (纸本)9781538615898

Automatic building of software projects providesa desirable foundation to support a large variety of softwareengineering research tasks based on open software repositories. In this paper, we propose the first technique to automaticallyextract software build commands from software readme files andWiki pages, and combine the extracted commands for softwarebuilding. Specifically, we leverage the Named Entity Recognition(NER) technique for build-command extraction, and prioritizethe extracted build commands to identify which one should beused in software build. Our experiment on top java projectsfrom GitHub reveals that, the proposed technique can correctlyidentify more than 90% of build commands, and can successfullybuild 84% of the projects that can be built successfully throughmanual inspection of software support documents. © 2017 IEEE.

关键词： java programming language

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Upsortable: programming Top-K queries over data streams 43

Upsortable: Programming Top-K queries over data streams

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43rd International Conference on Very Large Data Bases, VLDB 2017

作者： Subercaze, Julien Gravier, Christophe Kammoun, Syed Gillani Abderrahmen Laforest, Frédérique Univ Lyon UJM Saint-Etienne Laboratoire Hubert Curien UMR 5516 Saint-EtienneF42023 France

Top-k queries over data streams is a well studied problem. There exists numerous systems allowing to process continuous queries over sliding windows. At the opposite, non- append only streams call for ad-hoc solutions, e.g. tailor- made solutions implemented in a mainstream programming language. In the meantime, the Stream API and lambda expressions have been added in java 8, thus gaining powerful operations for data stream processing. However, the java Collections Framework does not provide data structures to safely and conveniently support sorted collections of evolving data. In this paper, we demonstrate Upsortable, an annotation-based approach that allows to use existing sorted collections from the standard java API for dynamic data management. Our approach relies on a combination of pre-compilation abstract syntax tree modifications and runtime analysis of bytecode. Upsortable offers the developer a safe and time-efficient solution for developing top-k queries on data streams while keeping a full compatibility with standard java. © 2017 VLDB Endowment.

关键词： java programming language

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Special issue on 12th international workshop on java technologies for real-time and embedded systems (JTRES2014)

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CONCURRENCY AND COMPUTATION-PRACTICE & EXPERIENCE 2017年第22期29卷 e4353.1-e4353.2页

作者： Fox, Geoffrey Indiana Univ Sch Informat Comp & Engn Bloomington IN 47401 USA

This editorial describes a special issue of papers from the 2014 workshop on java Technologies for Real-Time and Embedded Systems.[1] There are four papers in this special issue. The first paper [2] presents HVMTP, a time predictable and portable java virtual machine (JVM) implementation with applications in resource-constrained, hard real-time embedded systems, which implements all levels of the safety-critical java (SCJ) specification. Time predictability is achieved by a combination of time-predictable algorithms, exploiting the programming model of the SCJ profile and harnessing the static knowledge of the hosted SCJ system. This paper presents HVMTP in terms of its design and capabilities and demonstrates how a complete timing model of the JVM represented as a network of timed automata can be obtained using the tool TETASARTSJVM. The timing model readily integrates with the rest of the TETASARTS toolset for temporal verification of SCJ systems. A complete timing scheme in terms of safe worst-case execution times and best-case execution times of the java bytecodes is derived from the model. The paper takes a first look at how to support the new java 8 language feature of Lambda expressions in an SCJ context – looking in particular at how the bytecode, used for invoking java 8 closures, can be implemented in a time-predictable way and integrated into HVMTP.

关键词： address byte Timed automata paper Embedded systems execution time workshops java programming language java Virtual Machine (JVM) Workshops Real time java Hydrologic models

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CHERI JNI: Sinking the java security model into the C

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ACM SIGPLAN Notices 2017年第4期52卷 569-583页

作者： Chisnall, David Davis, Brooks Gudka, Khilan Brazdil, David Joannou, Alexandre Woodruff, Jonathan Theodore Markettos, A. Edward Maste, J. Norton, Robert Son, Stacey Roe, Michael Moore, Simon W. Neumann, Peter G. Laurie, Ben Watson, Robert N.M. University of Cambridge Cambridge United Kingdom SRI International Menlo Park United States DeepMind Technologies Ltd. London United Kingdom

java provides security and robustness by building a high-level security model atop the foundation of memory protection. Unfortunately, any native code linked into a java program-including the million lines used to implement the standard library-is able to bypass both the memory protection and the higher-level policies. We present a hardware-assisted implementation of the java native code interface, which extends the guarantees required for java's security model to native code. Our design supports safe direct access to buffers owned by the JVM, including hardware-enforced read-only access where appropriate. We also present java language syntax to declaratively describe isolated compartments for native code. We show that it is possible to preserve the memory safety and isolation requirements of the java security model in C code, allowing native code to run in the same process as java code with the same impact on security as running equivalent java code. Our approach has a negligible impact on performance, compared with the existing unsafe native code interface. We demonstrate a prototype implementation running on the CHERI microprocessor synthesized in FPGA. © 2017 ACM.

关键词： java programming language

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Accurate reification of complete supertype information for dynamic analysis on the JVM

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ACM SIGPLAN Notices 2017年第12期52卷 104-116页

作者： Rosà, Andrea Rosales, Eduardo Binder, Walter Faculty of Informatics Università della Svizzera Italiana Lugano Switzerland

Reflective supertype information (RSI) is useful for many instrumentation-based dynamic analyses on the java Virtual Machine (JVM). On the one hand, while such information can be obtained when performing the instrumentation within the same JVM process executing the instrumented program, in-process instrumentation severely limits the code coverage of the analysis. On the other hand, performing the instrumentation in a separate process can achieve full code coverage, but complete RSI is generally not available, often requiring expensive runtime checks in the instrumented program. Providing accurate and complete RSI in the instrumentation process is challenging because of dynamic class loading and classloader namespaces. In this paper, we present a novel technique to accurately reify complete RSI in a separate instrumentation process. We implement our technique in the dynamic analysis framework DiSL and evaluate it on a task profiler, achieving speedups of up to 45% for an analysis with full code coverage. © 2017 Owner/Author.

关键词： java programming language

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Based on the Android Platform “Early Adopters” of APP Design and Implementation

Based on the Android Platform “Early Adopters” of APP Desi...

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2017 2nd International Conference on Computer Engineering,Information Science and Internet Technology(CII 2017)

作者： JIAHUI LIANG JING CHANG SONGTAI LI South China Business College Guangdong University of Foreign Studies

This paper describes a design and implementation of APP based on the early adopters of Android platform,the system uses the java programming language,based on the development of Android *** server uses the Tomcat+Eclipse+Struts2 architecture and combines the MYSQL database to build *** can use the APP scan code to experience the product trial,and also can feedback the trial products,and provide a good platform for enterprises to understand their products.

关键词： java programming language Eclipse development tool data base MYSQL

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Data Logging of Processed Real Time Signal by Bluetooth and User Friendly GUI in java Platform

Data Logging of Processed Real Time Signal by Bluetooth and ...

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IEEE International Conference on Recent Trends in Electronics, Information & Communication Technology

作者： Bhargavi K Rao Shashank M Gowda Department of Electronics and Communication Engineering MITE Moodabidri Department of Electronics and Communication Engineering YIT Moodabidri

ISBN: (纸本)9781509037056

Each and every aspect of the modern society is affected by the technology. From extensive usage of electronic health records towards advances in engineering and technology, modern healthcare and its delivery methods are varying at an ever growing rate. A java based real-time data access and monitoring system using Bluetooth module can be helpful for continuous monitoring of patients to keep healthy environment. Along with the record maintenance, it can also serve as a remote monitor for chronic diseases. This proposal can act as a user interface to update data and can serve as backend program. In the front end side, processed real time data/signals communicated with microcontroller can be received successfully via Bluetooth technology [7] to the Bluetooth transceiver. java program will access the data and store it for analysis whenever needed using GUI. In hospitals, health records of the patients are being kept in database which can be accessed from anywhere in the amenity. This not only saves time but it also results in a better coordination and management of the data. The extensive use of technology in maintaining health records digitally has resulted in major savings in costs, as well as improved patients physical condition and safety. It is used to create an application for monitoring certain parameters such as temperature, sound intensity, bio-medical signals, pressure, humidity and more.

关键词： PIC microcontroller Bluetooth Real time signal Audio codec board Data logging database java API GUI Bluetooth graphical user interfaces java java programming language Records maintenance Patient Monitoring java platform front-ends Data logging

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An enterprise platform for wide area monitoring of load dynamics using Synchronized Measurement Technology

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IFAC-PapersOnLine 2016年第27期49卷 85-90页

作者： Nechifor, Alexandru Albu, Mihaela Hair, Richard Terzija, Vladimir The University of Manchester Oxford Rd ManchesterM139JA United Kingdom Politehnica University of Bucharest Splaiul Independenei 313 Bucharest060042 Romania Uniper Technologies Limited NottinghamNG110EE United Kingdom

This paper presents significant extensions of a vertically integrated platform, capable of real time processing of synchronized measurements obtained from a wide area monitoring system. Specific new contributions focus on including Matlab simulated load models into the real data processing chain, through the development of a virtual Phasor Measurement Unit functionality. Performance of the dynamic load model parameters estimation is assessed and compared for both simulated and real substation data. Automatically detected network disturbances are stored in a separate database, ensuring fast access to extracted knowledge. Additional developments include, but are not limited to intentional bad data injection, multiple simultaneous instances of virtual Phasor Measurement Units and automatic validation according to IEEE C37.118 standard. All new functionalities are implemented conforming to enterprise java EE7 standards, thus ensuring a high level of scalability, concurrent access and reliability. These features are of particular importance in practical applications, which represent the actual target of this research: to use recently installed Great Britain (GB) wide area monitoring system, created in the Ofgem Network Innovation Competition VISOR project, for wide area monitoring of load dynamics. © 2016

关键词： Phasor measurement units Data handling Dynamic loads Dynamics java programming language Monitoring Phase measurement Synchronization Wide area networks C37.118 java EE7 Load dynamics OpenPDC Synchronized measurement VISOR project vPMU

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Technical Demonstrations Session

Technical Demonstrations Session

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International Conference on Reconfigurable Computing and FPGAs (ReConFig)

作者： Ericles Sousa Arindam Chakraborty Alexandru Tanase Frank Hannig Jürgen Teich Friedrich-Alexander-Universitat Erlangen-Nurnberg Erlangen Bayern DE

ISBN: (纸本)9781538637982

In the realm of heterogeneous Multi-Processor System-on-Chip (MPSoC) architectures, Coarse-Grained Reconfigurable Arrays (CGRAs) have emerged as a low-power and highly efficient solution for speeding up computations. However, designing such programmable hardware accelerators is a time consuming and non-trivial task. To ease the development process, we present the TCPA Editor: a java-based graphical design environment for automatically generating Tightly Coupled Processor Arrays (TCPAs), a class of CGRAs that are highly parameterizable. The tool is tailored for designing, simulating, prototyping, and testing TCPA architectures. These consist of a massively parallel array of tightly coupled VLIW processing elements. The core array is complemented by peripheral components, e.g., controllers and a reconfigurable memory architecture. Based on the user's design entries, the editor generates synthesizable VHDL codes that describe each instance of a TCPA component. The editor can also be used for assembly programming and graphical interconnect setup. These configurations are combined into one binary code, which is used to reconfigure the hardware at runtime. Furthermore, the tool automatically generates synthesis parameters for today's de facto standard for on-chip communication. Hence, TCPAs can be easily interfaced to memory-mapped devices and high-speed streaming data, which allows for burst transfers of unrestricted size. The editor presents itself as a very powerful and user-friendly design tool for improving productivity. In the demonstration, we showcase our tool for the generation and system integration of TCPAs into heterogeneous MPSoC architectures. Finally, we present real-world case studies and synthesis results from different architectures prototyped in FPGA and ASIC technologies.

关键词： application specific integrated circuits electronic design automation field programmable gate arrays graphical user interfaces hardware description languages java multiprocessing systems parallel architectures reconfigurable architectures system-on-chip application specific integrated circuits Field programmable gate arrays system-on-chip electronic design automation Multiprocessing systems Hardware design languages graphical user interfaces Reconfigurable architectures Parallel architectures java java programming language ARCHITECTURE

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CodeSum: Translate Program language to Natural language∗

arXiv

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arXiv 2017年

作者： Hu, Xing Wei, Yuhan Li, Ge Jin, Zhi Ministry of Education China Software Institute Peking University China

During software maintenance, programmers spend a lot of time on code comprehension. Reading comments is an effective way for programmers to reduce the reading and navigating time when comprehending source code. Therefore, as a critical task in software engineering, code summarization aims to generate brief natural language descriptions for source code. In this paper, we propose a new code summarization model named CodeSum. CodeSum exploits the attention-based sequence-to-sequence (Seq2Seq) neural network with Structure-based Traversal (SBT) of Abstract Syntax Trees (AST). The AST sequences generated by SBT can better present the structure of ASTs and keep unambiguous. We conduct experiments on three large-scale corpora in different program languages, i.e., java, C#, and SQL, in which java corpus is our new proposed industry code extracted from Github. Experimental results show that our method CodeSum outperforms the state-of-the-art significantly. Copyright © 2017, The Authors. All rights reserved.

关键词： java programming language

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