Java on Bare Metal with the Fiji VM
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WEP12 Writing TINE Servers in Java
Proceedings of PCaPAC2005, Hayama, Japan WRITING TINE SERVERS IN JAVA Philip Duval and Josef Wilgen Deutsches Elektronen Synchrotron /MST Abstract that the TINE protocol does not deal so much with ‘puts’ The TINE Control System [1] is used to some degree in and ‘gets’ as with data ‘links’. all accelerator facilities at DESY (Hamburg and Zeuthen) One’s first inclination when offering Java in the and plays a major role in HERA. It supports a wide Control System’s portfolio is to say that we don’t need to variety of platforms, which enables engineers and worry about a Java Server API since front-end servers machine physicists as well as professional programmers will always have to access their hardware and that is best to develop and integrate front-end server software into the left to code written in C. Furthermore, if there are real- control system using the operating system and platform of time requirements, Java would not be an acceptable their choice. User applications have largely been written platform owing to Java’s garbage collection kicking in at for Windows platforms (often in Visual Basic). In the next indeterminate intervals. generation of accelerators at DESY (PETRA III and Nevertheless, Java is a powerful language and offers VUV-FEL), it is planned to write the TINE user- numerous features and a wonderful framework for applications primarily in Java. Java control applications avoiding and catching nagging program errors. Thus have indeed enjoyed widespread acceptance within the there does in fact exist a strong desire to develop control controls community. The next step is then to offer Java as system servers using Java. -
Bypassing Portability Pitfalls of High-Level Low-Level Programming
Bypassing Portability Pitfalls of High-level Low-level Programming Yi Lin, Stephen M. Blackburn Australian National University [email protected], [email protected] Abstract memory-safety, encapsulation, and strong abstraction over hard- Program portability is an important software engineering consider- ware [12], which are desirable goals for system programming as ation. However, when high-level languages are extended to effec- well. Thus, high-level languages are potential candidates for sys- tively implement system projects for software engineering gain and tem programming. safety, portability is compromised—high-level code for low-level Prior research has focused on the feasibility and performance of programming cannot execute on a stock runtime, and, conversely, applying high-level languages to system programming [1, 7, 10, a runtime with special support implemented will not be portable 15, 16, 21, 22, 26–28]. The results showed that, with proper ex- across different platforms. tension and restriction, high-level languages are able to undertake We explore the portability pitfall of high-level low-level pro- the task of low-level programming, while preserving type-safety, gramming in the context of virtual machine implementation tasks. memory-safety, encapsulation and abstraction. Notwithstanding the Our approach is designing a restricted high-level language called cost for dynamic compilation and garbage collection, the perfor- RJava, with a flexible restriction model and effective low-level ex- mance of high-level languages when used to implement a virtual tensions, which is suitable for different scopes of virtual machine machine is still competitive with using a low-level language [2]. implementation, and also suitable for a low-level language bypass Using high-level languages to architect large systems is bene- for improved portability. -
Here I Led Subcommittee Reports Related to Data-Intensive Science and Post-Moore Computing) and in CRA’S Board of Directors Since 2015
Vivek Sarkar Curriculum Vitae Contents 1 Summary 2 2 Education 3 3 Professional Experience 3 3.1 2017-present: College of Computing, Georgia Institute of Technology . 3 3.2 2007-present: Department of Computer Science, Rice University . 5 3.3 1987-2007: International Business Machines Corporation . 7 4 Professional Awards 11 5 Research Awards 12 6 Industry Gifts 15 7 Graduate Student and Other Mentoring 17 8 Professional Service 19 8.1 Conference Committees . 20 8.2 Advisory/Award/Review/Steering Committees . 25 9 Keynote Talks, Invited Talks, Panels (Selected) 27 10 Teaching 33 11 Publications 37 11.1 Refereed Conference and Journal Publications . 37 11.2 Refereed Workshop Publications . 51 11.3 Books, Book Chapters, and Edited Volumes . 58 12 Patents 58 13 Software Artifacts (Selected) 59 14 Personal Information 60 Page 1 of 60 01/06/2020 1 Summary Over thirty years of sustained contributions to programming models, compilers and runtime systems for high performance computing, which include: 1) Leading the development of ASTI during 1991{1996, IBM's first product compiler component for optimizing locality, parallelism, and the (then) new FORTRAN 90 high-productivity array language (ASTI has continued to ship as part of IBM's XL Fortran product compilers since 1996, and was also used as the foundation for IBM's High Performance Fortran compiler product); 2) Leading the research and development of the open source Jikes Research Virtual Machine at IBM during 1998{2001, a first-of-a-kind Java Virtual Machine (JVM) and dynamic compiler implemented -
An OSEK/VDX-Based Multi-JVM for Automotive Appliances
AN OSEK/VDX-BASED MULTI-JVM FOR AUTOMOTIVE APPLIANCES Christian Wawersich, Michael Stilkerich, Wolfgang Schr¨oder-Preikschat University of Erlangen-Nuremberg Distributed Systems and Operating Systems Erlangen, Germany E-Mail: [email protected], [email protected], [email protected] Abstract: The automotive industry has recent ambitions to integrate multiple applications from different micro controllers on a single, more powerful micro controller. The outcome of this integration process is the loss of the physical isolation and a more complex monolithic software. Memory protection mechanisms need to be provided that allow for a safe co-existence of heterogeneous software from different vendors on the same hardware, in order to prevent the spreading of an error to the other applications on the controller and leaving an unclear responsi- bility situation. With our prototype system KESO, we present a Java-based solution for ro- bust and safe embedded real-time systems that does not require any hardware protection mechanisms. Based on an OSEK/VDX operating system, we offer a familiar system creation process to developers of embedded software and also provide the key benefits of Java to the embedded world. To the best of our knowledge, we present the first Multi-JVM for OSEK/VDX operating systems. We report on our experiences in integrating Java and an em- bedded operating system with focus on the footprint and the real-time capabili- ties of the system. Keywords: Java, Embedded Real-Time Systems, Automotive, Isolation, KESO 1. INTRODUCTION Modern cars contain a multitude of micro controllers for a wide area of tasks, ranging from convenience features such as the supervision of the car’s audio system to safety relevant functions such as assisting the braking system of the car. -
Techniques for Real-System Characterization of Java Virtual Machine Energy and Power Behavior Gilberto Contreras Margaret Martonosi
Techniques for Real-System Characterization of Java Virtual Machine Energy and Power Behavior Gilberto Contreras Margaret Martonosi Department of Electrical Engineering Princeton University 1 Why Study Power in Java Systems? The Java platform has been adopted in a wide variety of devices Java servers demand performance, embedded devices require low-power Performance is important, power/energy/thermal issues are equally important How do we study and characterize these requirements in a multi-layer platform? 2 Power/Performance Design Issues Java Application Java Virtual Machine Operating System Hardware 3 Power/Performance Design Issues Java Application Garbage Class Runtime Execution Collection LoaderJava VirtualCompiler MachineEngine Operating System Hardware How do the various software layers affect power/performance characteristics of hardware? Where should time be invested when designing power and/or thermally aware Java virtual Machines? 4 Outline Approaches for Energy/Performance Characterization of Java virtual machines Methodology Breaking the JVM into sub-components Hardware-based power/performance characterization of JVM sub-components Results Jikes & Kaffe on Pentium M Kaffe on Intel XScale Conclusions 5 Power & Performance Analysis of Java Simulation Approach √ Flexible: easy to model non-existent hardware x Simulators may lack comprehensiveness and accuracy x Thermal studies require tens of seconds granularity Accurate simulators are too slow Hardware Approach √ Able to capture full-system characteristics -
Apache Harmony Project Tim Ellison Geir Magnusson Jr
The Apache Harmony Project Tim Ellison Geir Magnusson Jr. Apache Harmony Project http://harmony.apache.org TS-7820 2007 JavaOneSM Conference | Session TS-7820 | Goal of This Talk In the next 45 minutes you will... Learn about the motivations, current status, and future plans of the Apache Harmony project 2007 JavaOneSM Conference | Session TS-7820 | 2 Agenda Project History Development Model Modularity VM Interface How Are We Doing? Relevance in the Age of OpenJDK Summary 2007 JavaOneSM Conference | Session TS-7820 | 3 Agenda Project History Development Model Modularity VM Interface How Are We Doing? Relevance in the Age of OpenJDK Summary 2007 JavaOneSM Conference | Session TS-7820 | 4 Apache Harmony In the Beginning May 2005—founded in the Apache Incubator Primary Goals 1. Compatible, independent implementation of Java™ Platform, Standard Edition (Java SE platform) under the Apache License 2. Community-developed, modular architecture allowing sharing and independent innovation 3. Protect IP rights of ecosystem 2007 JavaOneSM Conference | Session TS-7820 | 5 Apache Harmony Early history: 2005 Broad community discussion • Technical issues • Legal and IP issues • Project governance issues Goal: Consolidation and Consensus 2007 JavaOneSM Conference | Session TS-7820 | 6 Early History Early history: 2005/2006 Initial Code Contributions • Three Virtual machines ● JCHEVM, BootVM, DRLVM • Class Libraries ● Core classes, VM interface, test cases ● Security, beans, regex, Swing, AWT ● RMI and math 2007 JavaOneSM Conference | Session TS-7820 | -
A Post-Apocalyptic Sun.Misc.Unsafe World
A Post-Apocalyptic sun.misc.Unsafe World http://www.superbwallpapers.com/fantasy/post-apocalyptic-tower-bridge-london-26546/ Chris Engelbert Twitter: @noctarius2k Jatumba! 2014, 2015, 2016, … Disclaimer This talk is not going to be negative! Disclaimer But certain things are highly speculative and APIs or ideas might change by tomorrow! sun.misc.Scissors http://www.underwhelmedcomic.com/wp-content/uploads/2012/03/runningdude.jpg sun.misc.Unsafe - What you (don’t) know sun.misc.Unsafe - What you (don’t) know • Internal class (sun.misc Package) sun.misc.Unsafe - What you (don’t) know • Internal class (sun.misc Package) sun.misc.Unsafe - What you (don’t) know • Internal class (sun.misc Package) • Used inside the JVM / JRE sun.misc.Unsafe - What you (don’t) know • Internal class (sun.misc Package) • Used inside the JVM / JRE // Unsafe mechanics private static final sun.misc.Unsafe U; private static final long QBASE; private static final long QLOCK; private static final int ABASE; private static final int ASHIFT; static { try { U = sun.misc.Unsafe.getUnsafe(); Class<?> k = WorkQueue.class; Class<?> ak = ForkJoinTask[].class; example: QBASE = U.objectFieldOffset (k.getDeclaredField("base")); java.util.concurrent.ForkJoinPool QLOCK = U.objectFieldOffset (k.getDeclaredField("qlock")); ABASE = U.arrayBaseOffset(ak); int scale = U.arrayIndexScale(ak); if ((scale & (scale - 1)) != 0) throw new Error("data type scale not a power of two"); ASHIFT = 31 - Integer.numberOfLeadingZeros(scale); } catch (Exception e) { throw new Error(e); } } } sun.misc.Unsafe -
Free Java Developer Room
Room: AW1.121 Free Java Developer Room Saturday 2008-02-23 14:00-15:00 Welcome to the Free Java Meeting Welcome and introduction to the projects, people and themes that make Rich Sands – Mark Reinhold – Mark up the Free Java Meeting at Fosdem. ~ GNU Classpath ~ OpenJDK Wielaard – Tom Marble 15:00-16:00 Mobile Java Take your freedom to the max! Make your Free Java mobile. Christian Thalinger - Guillaume ~ CACAO Embedded ~ PhoneME ~ Midpath Legris - Ray Gans 16:00-16:40 Women in Java Technology Female programmers are rare. Female Java programmers are even more Clara Ko - Linda van der Pal rare. ~ Duchess, Ladies in Java Break 17:00-17:30 Hacking OpenJDK & Friends Hear about directions in hacking Free Java from the front lines. Roman Kennke - Andrew Hughes ~ OpenJDK ~ BrandWeg ~ IcePick 17:30-19:00 VM Rumble, Porting and Architectures Dalibor Topic - Robert Lougher - There are lots of runtimes able to execute your java byte code. But which Peter Kessler - Ian Rogers - one is the best, coolest, smartest, easiest portable or just simply the most fun? ~ Kaffe ~ JamVM ~ HotSpot ~ JikesRVM ~ CACAO ~ ikvm ~ Zero- Christian Thalinger - Jeroen Frijters assembler Port ~ Mika - Gary Benson - Chris Gray Sunday 2008-02-24 9:00-10:00 Distro Rumble So which GNU/Linux distribution integrates java packages best? Find out Petteri Raty - Tom Fitzsimmons - during this distro shootout! ~ Gentoo ~ Fedora ~ Debian ~ Ubuntu Matthias Klose 10:00-11:30 The Free Java Factory OpenJDK and IcedTea, how are they made and how do you test them? David Herron - Lillian Angel - Tom ~ OpenJDK ~ IcedTea Fitzsimmons 11:30-13:00 JIT Session: Discussion Topics Dynamically Loaded Want to hear about -- or talk about -- something the Free Java world and don't see a topic on the agenda? This time is reserved for late binding Tom Marble discussion. -
Fedora Core, Java™ and You
Fedora Core, Java™ and You Gary Benson Software Engineer What is Java? The word ªJavaº is used to describe three things: The Java programming language The Java virtual machine The Java platform To support Java applications Fedora needs all three. What Fedora uses: GCJ and ECJ GCJ is the core of Fedora©s Java support: GCJ includes gcj, a compiler for the Java programming language. GCJ also has a runtime and class library, collectively called libgcj. The class library is separately known as GNU Classpath. ECJ is the Eclipse Compiler for Java: GCJ©s compiler gcj is not used for ªtraditionalº Java compilation. More on that later... Why libgcj? There are many free Java Virtual machines: Cacao, IKVM, JamVM, Jikes RVM, Kaffe, libgcj, Sable VM, ... There are two main reasons Fedora uses libgcj: Availability on many platforms. Ability to use precompiled native code. GNU Classpath Free core class library for Java virtual machines and compilers. The JPackage Project A collection of some 1,600 Java software packages for Linux: Distribution-agnostic RPM packages. Both runtimes/development kits and applications. Segregation between free and non-free packages. All free packages built entirely from source. Multiple runtimes/development kits may be installed. Fedora includes: JPackage-compatible runtime and development kit packages. A whole bunch of applications. JPackage JOnAS Fedora©s Java Compilers gcj can operate in several modes: Java source (.java) to Java bytecode (.class) Java source (.java) to native machine code (.o) Java bytecode (.class, .jar) to native machine code (.o) In Fedora: ECJ compiles Java source to bytecode. gcj compiles that bytecode to native machine code. -
Java in Embedded Linux Systems
Java in Embedded Linux Systems Java in Embedded Linux Systems Thomas Petazzoni / Michael Opdenacker Free Electrons http://free-electrons.com/ Created with OpenOffice.org 2.x Java in Embedded Linux Systems © Copyright 2004-2007, Free Electrons, Creative Commons Attribution-ShareAlike 2.5 license http://free-electrons.com Sep 15, 2009 1 Rights to copy Attribution ± ShareAlike 2.5 © Copyright 2004-2008 You are free Free Electrons to copy, distribute, display, and perform the work [email protected] to make derivative works to make commercial use of the work Document sources, updates and translations: Under the following conditions http://free-electrons.com/articles/java Attribution. You must give the original author credit. Corrections, suggestions, contributions and Share Alike. If you alter, transform, or build upon this work, you may distribute the resulting work only under a license translations are welcome! identical to this one. For any reuse or distribution, you must make clear to others the license terms of this work. Any of these conditions can be waived if you get permission from the copyright holder. Your fair use and other rights are in no way affected by the above. License text: http://creativecommons.org/licenses/by-sa/2.5/legalcode Java in Embedded Linux Systems © Copyright 2004-2007, Free Electrons, Creative Commons Attribution-ShareAlike 2.5 license http://free-electrons.com Sep 15, 2009 2 Best viewed with... This document is best viewed with a recent PDF reader or with OpenOffice.org itself! Take advantage of internal -
Towards Architectural Programming of Embedded Systems
Towards Architectural Programming of Embedded Systems Arne Haber, Jan O. Ringert, Bernhard Rumpe Software Engineering, RWTH Aachen University, Germany http://www.se-rwth.de/ Abstract: Integrating architectural elements with a modern programming language is essential to ensure a smooth combination of architectural design and programming. In this position statement, we motivate a combination of architectural description for distributed, asynchronously communicating systems and Java as an example for such an integration. The result is an ordinary programming language, that exhibits archi- tecture, data structure and behavior within one view. Mappings or tracing between different views is unnecessary. A prototypical implementation of a compiler demon- strates the possibilities and challenges of architectural programming. 1 Java with Architectural Elements As stated in [MT00] there are a number of languages that support design, analysis, and further development of software-system-architectures. These languages are commonly known as Architecture Description Languages (ADL) and allow a high level description of software systems of a specific domain. Using an ADL enables reasoning about specific system properties in an early development stage [GMW97]. Furthermore, there are quite often mappings from architecture to a General Purpose Language (GPL), producing code frames for the GPL. This helps ensuring the architectural consistency initially, but when the code evolves the architecture becomes implicitly polluted or when the architecture shall be evolved this needs to be done on the code level. Tracing is therefore important to keep architecture and code aligned. However, it would be much better to integrate both, architecture and code into one single artifact such that tracing is not necessary anymore. -
Secure Control Applications in Smart Homes and Buildings
Die approbierte Originalversion dieser Dissertation ist in der Hauptbibliothek der Technischen Universität Wien aufgestellt und zugänglich. http://www.ub.tuwien.ac.at The approved original version of this thesis is available at the main library of the Vienna University of Technology. http://www.ub.tuwien.ac.at/eng Secure Control Applications in Smart Homes and Buildings DISSERTATION submitted in partial fulfillment of the requirements for the degree of Doktor der Technischen Wissenschaften by Mag. Dipl.-Ing. Friedrich Praus Registration Number 0025854 to the Faculty of Informatics at the Vienna University of Technology Advisor: Ao.Univ.Prof. Dipl.-Ing. Dr.techn. Wolfgang Kastner The dissertation has been reviewed by: Ao.Univ.Prof. Dipl.-Ing. Prof. Dr. Peter Palensky Dr.techn. Wolfgang Kastner Vienna, 1st October, 2015 Mag. Dipl.-Ing. Friedrich Praus Technische Universität Wien A-1040 Wien Karlsplatz 13 Tel. +43-1-58801-0 www.tuwien.ac.at Erklärung zur Verfassung der Arbeit Mag. Dipl.-Ing. Friedrich Praus Hallergasse 11/29, A-1110 Wien Hiermit erkläre ich, dass ich diese Arbeit selbständig verfasst habe, dass ich die verwen- deten Quellen und Hilfsmittel vollständig angegeben habe und dass ich die Stellen der Arbeit – einschließlich Tabellen, Karten und Abbildungen –, die anderen Werken oder dem Internet im Wortlaut oder dem Sinn nach entnommen sind, auf jeden Fall unter Angabe der Quelle als Entlehnung kenntlich gemacht habe. Wien, 1. Oktober 2015 Friedrich Praus v Kurzfassung Die zunehmende Integration von heterogenen Gebäudeautomationssystemen ermöglicht gesteigerten Komfort, Energieeffizienz, verbessertes Gebäudemanagement, Nachhaltig- keit sowie erweiterte Anwendungsgebiete, wie beispielsweise “Active Assisted Living” Szenarien. Diese Smart Homes und Gebäude sind heutzutage als dezentrale Systeme rea- lisiert, in denen eingebettete Geräte Prozessdaten über ein Netzwerk austauschen.