A Java Processor with Hardware-Support Object-Oriented Instructions
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Java (Programming Langua a (Programming Language)
Java (programming language) From Wikipedia, the free encyclopedialopedia "Java language" redirects here. For the natural language from the Indonesian island of Java, see Javanese language. Not to be confused with JavaScript. Java multi-paradigm: object-oriented, structured, imperative, Paradigm(s) functional, generic, reflective, concurrent James Gosling and Designed by Sun Microsystems Developer Oracle Corporation Appeared in 1995[1] Java Standard Edition 8 Update Stable release 5 (1.8.0_5) / April 15, 2014; 2 months ago Static, strong, safe, nominative, Typing discipline manifest Major OpenJDK, many others implementations Dialects Generic Java, Pizza Ada 83, C++, C#,[2] Eiffel,[3] Generic Java, Mesa,[4] Modula- Influenced by 3,[5] Oberon,[6] Objective-C,[7] UCSD Pascal,[8][9] Smalltalk Ada 2005, BeanShell, C#, Clojure, D, ECMAScript, Influenced Groovy, J#, JavaScript, Kotlin, PHP, Python, Scala, Seed7, Vala Implementation C and C++ language OS Cross-platform (multi-platform) GNU General Public License, License Java CommuniCommunity Process Filename .java , .class, .jar extension(s) Website For Java Developers Java Programming at Wikibooks Java is a computer programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few impimplementation dependencies as possible.ble. It is intended to let application developers "write once, run ananywhere" (WORA), meaning that code that runs on one platform does not need to be recompiled to rurun on another. Java applications ns are typically compiled to bytecode (class file) that can run on anany Java virtual machine (JVM)) regardless of computer architecture. Java is, as of 2014, one of tthe most popular programming ng languages in use, particularly for client-server web applications, witwith a reported 9 million developers.[10][11] Java was originallyy developed by James Gosling at Sun Microsystems (which has since merged into Oracle Corporation) and released in 1995 as a core component of Sun Microsystems'Micros Java platform. -
Real-Time Java for Embedded Devices: the Javamen Project*
REAL-TIME JAVA FOR EMBEDDED DEVICES: THE JAVAMEN PROJECT* A. Borg, N. Audsley, A. Wellings The University of York, UK ABSTRACT: Hardware Java-specific processors have been shown to provide the performance benefits over their software counterparts that make Java a feasible environment for executing even the most computationally expensive systems. In most cases, the core of these processors is a simple stack machine on which stack operations and logic and arithmetic operations are carried out. More complex bytecodes are implemented either in microcode through a sequence of stack and memory operations or in Java and therefore through a set of bytecodes. This paper investigates the Figure 1: Three alternatives for executing Java code (take from (6)) state-of-the-art in Java processors and identifies two areas of improvement for specialising these processors timeliness as a key issue. The language therefore fails to for real-time applications. This is achieved through a allow more advanced temporal requirements of threads combination of the implementation of real-time Java to be expressed and virtual machine implementations components in hardware and by using application- may behave unpredictably in this context. For example, specific characteristics expressed at the Java level to whereas a basic thread priority can be specified, it is not drive a co-design strategy. An implementation of these required to be observed by a virtual machine and there propositions will provide a flexible Ravenscar- is no guarantee that the highest priority thread will compliant virtual machine that provides better preempt lower priority threads. In order to address this performance while still guaranteeing real-time shortcoming, two competing specifications have been requirements. -
Cost-Effective Compilation Techniques for Java Just-In-Time Compilers 3
IEICE TRANS. ??, VOL.Exx–??, NO.xx XXXX 200x 1 PAPER Cost-Effective Compilation Techniques for Java Just-in-Time Compilers Kazuyuki SHUDO†, Satoshi SEKIGUCHI†, Nonmembers, and Yoichi MURAOKA ††, Fel low SUMMARY Java Just-in-Time compilers have to satisfy a policies. number of requirements in conflict with each other. Effective execution of a generated code is not the only requirement, but 1. Ease of use as a base of researches. compilation time, memory consumption and compliance with the 2. Cost-effective development. Less labor and rela- Java Virtual Machine specification are also important. We have tively much effect. developed a Java Just-in-Time compiler keeping implementation 3. Adequate quality and performance for practical labor little. Another important objective is developing an ad- equate base of following researches which utilize this compiler. use. The proposed compilation techniques take low compilation cost and low development cost. This paper also describes optimization Compiler development involves much work on a methods implemented in the compiler, for instance, instruction parser, intermediate representations and a number of folding, exception handling with signals and code patching. optimizations. Because of it, we have to consider those key words: Runtime compilation, Java Virtual Machine, Stack human and engineering factor seriously in addition to caching, Instruction folding, Code patching technical requirements like performance. Our plan on the development of the JIT compiler was to have a prac- 1. Introduction tical compiler with work several man-month. Our an- other goal was specifically having a research base on Just-in-Time (JIT) compilers for Java bytecode have which we do following researches with less labor while to satisfy a number of requirements, which are differ- developing it with less work. -
S32 Design Studio for S32 Platform 3.4 Installation Guide
S32 Design Studio for S32 Platform 3.4 Installation Guide Document Number: S32DSIG Rev. 1.0, 12/2020 Contents System Requirements......................................................................................................................3 Installation prerequisites for Linux platforms.............................................................................5 Downloading S32DS 3.4................................................................................................................12 Downloading the S32DS 3.4 installer................................................................................................................12 Obtaining the activation code.............................................................................................................................12 Installing S32DS 3.4......................................................................................................................14 Debian 8 post-installation settings..................................................................................................................... 20 Installing product updates and packages................................................................................... 23 Installing Synopsys tools...............................................................................................................25 Installing VP Explorer........................................................................................................................................25 Post-installation settings.................................................................................................................................... -
Picojava-II™ Programmer's Reference Manual
picoJava-II™ Programmer’s Reference Manual Sun Microsystems, Inc. 901 San Antonio Road Palo Alto, CA 94303 USA 650 960-1300 Part No.: 805-2800-06 March 1999 Copyright 1999 Sun Microsystems, Inc. 901 San Antonio Road, Palo Alto, California 94303 U.S.A. All rights reserved. The contents of this document are subject to the current version of the Sun Community Source License, picoJava Core (“the License”). You may not use this document except in compliance with the License. You may obtain a copy of the License by searching for “Sun Community Source License” on the World Wide Web at http://www.sun.com. See the License for the rights, obligations, and limitations governing use of the contents of this document. Sun, Sun Microsystems, the Sun logo and all Sun-based trademarks and logos, Java, picoJava, and all Java-based trademarks and logos are trademarks, registered trademarks, or service marks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries. Products bearing SPARC trademarks are based upon an architecture developed by Sun Microsystems, Inc. DOCUMENTATION IS PROVIDED “AS IS” AND ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON- INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID. THIS PUBLICATION COULD INCLUDE TECHNICAL INACCURACIES OR TYPOGRAPHICAL ERRORS. CHANGES ARE PERIODICALLY ADDED TO THE INFORMATION HEREIN; THESE CHANGES WILL BE INCORPORATED IN NEW EDITIONS OF THE PUBLICATION. -
Optimizing for Jazelle DBX and Java Hotspot™ Technology Case Study
Optimizing Midlets for Size and Performance Simon Robinson Innaworks www.innaworks.com TS-5109 2007 JavaOneSM Conference | Session TS-5109 | Goal of This Talk Pushing the size and performance of Java™ Platform, Micro Edition (Java ME platform) applications on today’s handsets 2007 JavaOneSM Conference | Session TS-5109 | 2 Agenda Why size and performance matters Under the bonnet of a Java ME Platform MIDlet Optimization strategy Optimization techniques Optimizing for Jazelle DBX and Java HotSpot™ technology Case study 2007 JavaOneSM Conference | Session TS-5109 | 3 Agenda Why size and performance matters Under the bonnet of a Java ME Platform MIDlet Optimization strategy Optimization techniques Optimizing for Jazelle DBX and Java HotSpot™ technology Case study 2007 JavaOneSM Conference | Session TS-5109 | 4 Why Size and Performance Matters Adoption = Potential market size × How much fun ×Marketing 2007 JavaOneSM Conference | Session TS-5109 | 5 Why Size and Performance Matters Adoption = Potential market size × How much fun ×Marketing Handset coverage matters 2007 JavaOneSM Conference | Session TS-5109 | 6 Why Size and Performance Matters Adoption = Potential market size × How much fun ×Marketing How fun is your game? Perceived quality matters 2007 JavaOneSM Conference | Session TS-5109 | 7 Constraints of Consumer Handsets JAR size Heap memory Nokia S40 v1 (3300, etc.) 64 kB 370 kB Nokia S40 v2 (6230, etc.) 128 kB 512 kB Sharp GX22 100 kB 512 kB DoJa 2.5 (m420i) 30 B 1.5 MB 15% game sales for handsets < 64 kB Java Archive (JAR) file size -
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 -
Picojava-II™ Microarchitecture Guide
picoJava-II™ Microarchitecture Guide Sun Microsystems, Inc. 901 San Antonio Road Palo Alto, CA 94303 USA 650 960-1300 Part No.: 960-1160-11 March 1999 Copyright 1999 Sun Microsystems, Inc. 901 San Antonio Road, Palo Alto, California 94303 U.S.A. All rights reserved. The contents of this document are subject to the current version of the Sun Community Source License, picoJava Core (“the License”). You may not use this document except in compliance with the License. You may obtain a copy of the License by searching for “Sun Community Source License” on the World Wide Web at http://www.sun.com. See the License for the rights, obligations, and limitations governing use of the contents of this document. Sun, Sun Microsystems, the Sun logo and all Sun-based trademarks and logos, Java, picoJava, and all Java-based trademarks and logos are trademarks, registered trademarks, or service marks of Sun Microsystems, Inc. in the U.S. and other countries. All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International, Inc. in the U.S. and other countries. Products bearing SPARC trademarks are based upon an architecture developed by Sun Microsystems, Inc. DOCUMENTATION IS PROVIDED “AS IS” AND ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD TO BE LEGALLY INVALID. THIS PUBLICATION COULD INCLUDE TECHNICAL INACCURACIES OR TYPOGRAPHICAL ERRORS. CHANGES ARE PERIODICALLY ADDED TO THE INFORMATION HEREIN; THESE CHANGES WILL BE INCORPORATED IN NEW EDITIONS OF THE PUBLICATION. -
C:\Andrzej\PDF\ABC Nagrywania P³yt CD\1 Strona.Cdr
IDZ DO PRZYK£ADOWY ROZDZIA£ SPIS TREFCI Wielka encyklopedia komputerów KATALOG KSI¥¯EK Autor: Alan Freedman KATALOG ONLINE T³umaczenie: Micha³ Dadan, Pawe³ Gonera, Pawe³ Koronkiewicz, Rados³aw Meryk, Piotr Pilch ZAMÓW DRUKOWANY KATALOG ISBN: 83-7361-136-3 Tytu³ orygina³u: ComputerDesktop Encyclopedia Format: B5, stron: 1118 TWÓJ KOSZYK DODAJ DO KOSZYKA Wspó³czesna informatyka to nie tylko komputery i oprogramowanie. To setki technologii, narzêdzi i urz¹dzeñ umo¿liwiaj¹cych wykorzystywanie komputerów CENNIK I INFORMACJE w ró¿nych dziedzinach ¿ycia, jak: poligrafia, projektowanie, tworzenie aplikacji, sieci komputerowe, gry, kinowe efekty specjalne i wiele innych. Rozwój technologii ZAMÓW INFORMACJE komputerowych, trwaj¹cy stosunkowo krótko, wniós³ do naszego ¿ycia wiele nowych O NOWOFCIACH mo¿liwoYci. „Wielka encyklopedia komputerów” to kompletne kompendium wiedzy na temat ZAMÓW CENNIK wspó³czesnej informatyki. Jest lektur¹ obowi¹zkow¹ dla ka¿dego, kto chce rozumieæ dynamiczny rozwój elektroniki i technologii informatycznych. Opisuje wszystkie zagadnienia zwi¹zane ze wspó³czesn¹ informatyk¹; przedstawia zarówno jej historiê, CZYTELNIA jak i trendy rozwoju. Zawiera informacje o firmach, których produkty zrewolucjonizowa³y FRAGMENTY KSI¥¯EK ONLINE wspó³czesny Ywiat, oraz opisy technologii, sprzêtu i oprogramowania. Ka¿dy, niezale¿nie od stopnia zaawansowania swojej wiedzy, znajdzie w niej wyczerpuj¹ce wyjaYnienia interesuj¹cych go terminów z ró¿nych bran¿ dzisiejszej informatyki. • Komunikacja pomiêdzy systemami informatycznymi i sieci komputerowe • Grafika komputerowa i technologie multimedialne • Internet, WWW, poczta elektroniczna, grupy dyskusyjne • Komputery osobiste — PC i Macintosh • Komputery typu mainframe i stacje robocze • Tworzenie oprogramowania i systemów komputerowych • Poligrafia i reklama • Komputerowe wspomaganie projektowania • Wirusy komputerowe Wydawnictwo Helion JeYli szukasz ]ród³a informacji o technologiach informatycznych, chcesz poznaæ ul. -
Paper Discusses the Advantages and Disadvantages of Each Approach As Well As Specific Experiences of Using Java in a Commercial Tape Drive Project
Java and Real Time Storage Applications Gary Mueller 195 Garnet St Broomfield, CO 80020-2203 [email protected] Tel: +1-303-465-4279 Janet Borzuchowski Storage Technology Corporation 2270 South 88th Street M. S. 4272 Louisville CO 80028 [email protected] Tel: +1-303-673-8297 Abstract Storage systems have storage devices which run real time embedded software. Most storage devices use C and occasionally C++ to manage and control the storage device. Software for the storage device must meet the time and resource constraints of the storage device. The prevailing wisdom in the embedded world is that objects and in particular Java only work for simple problems and can not handle REAL problems, are too slow and can not handle time critical processing and are too big and can’t fit in memory constrained systems. Even though Java's roots are in the embedded application area, Java is more widely used in the desktop and enterprise environment. Use of Java in embedded real time environments where performance and size constraints rule is much less common. Java vendors offer a dizzying array of options, products and choices for real time storage applications. Four main themes emerge when using Java in a real time storage application; compiling Java, executing Java with a software Java Virtual Machine (JVM), executing Java with a hardware JVM and replacing a real time operating system (RTOS) with a JVM. The desktop and enterprise environment traditionally run Java using a software JVM that has been ported to a particular platform. The JVM runs as a task or process hosted by the platform operating system. -
Dalvik Bytecode Acceleration Using Fetch/Decode Hardware Extension
Journal of Information Processing Vol.23 No.2 118–130 (Mar. 2015) [DOI: 10.2197/ipsjjip.23.118] Regular Paper Dalvik Bytecode Acceleration Using Fetch/Decode Hardware Extension Surachai Thongkaew1,a) Tsuyoshi Isshiki1,b) Dongju Li1,c) Hiroaki Kunieda1,d) Received: May 6, 2014, Accepted: November 10, 2014 Abstract: The Dalvik virtual machine (Dalvik VM) is an essential piece of software that runs applications on the Android operating system. Android application programs are commonly written in the Java language and compiled to Java bytecode. The Java bytecode is converted to Dalvik bytecode (Dalvik Executable file) which is interpreted by the Dalvik VM on typical Android devices. The significant disadvantage of interpretation is a much slower speed of program execution compared to direct machine code execution on the host CPU. However, there are many tech- niques to improve the performance of Dalvik VM. A typical methodology is just-in-time compilation which converts frequently executed sequences of interpreted instruction to host machine code. Other methodologies include dedi- cated bytecode processors and architectural extension on existing processors. In this paper, we propose an alternative methodology, “Fetch & Decode Hardware Extension,” to improve the performance of Dalvik VM. The Fetch & De- code Hardware Extension is a specially designed hardware component to fetch and decode Dalvik bytecode directly, while the core computations within the virtual registers are done by the optimized Dalvik bytecode software handler. The experimental results show the speed improvements on Arithmetic instructions, loop & conditional instructions and method invocation & return instructions, can be achieved up to 2.4x, 2.7x and 1.8x, respectively. -
(19) United States (12) Patent Application Publication (10) Pub
US 20060190934A1 (19) United States (12) Patent Application Publication (10) Pub. No.: US 2006/0190934 A1 Kielstra et al. (43) Pub. Date: Aug. 24, 2006 (54) METHOD AND APPARATUS FOR INLINING Publication Classi?cation NATIVE FUNCTIONS INTO COMPILED JAVA CODE (51) Int. Cl. G06F 9/45 (2006.01) (52) US. Cl. ............................................................ ..717/148 (75) Inventors: Allan Henry Kielstra, Ajax (CA); Levon Sassoon Stepanian, Toronto (CA); Kevin Alexander Stoodley, (57) ABSTRACT Richmond Hill (CA) A method, apparatus, and computer instructions are pro vided for inlining native functions into compiled Java code. Correspondence Address: A conversion engine is provided by the present invention for IBM CORP (YA) converting the intermediate representation of native func C/O YEE & ASSOCIATES PC tions to the just-in-time (JIT) compiler’s intermediate rep PO. BOX 802333 resentation. With the converted intermediate representation, DALLAS, TX 75380 (US) an inliner recursively inlines the converted JIT compiler’s intermediate representation into the native callsite to remove the need of invoking the native function and subsequent (73) Assignee: International Business Machines Cor native calls made by the function. The inlining process poration, Armonk, NY continues until either a call to an opaque function is encoun tered or until a JIT compiler intermediate representation groWth limits are reached. The inliner also replaces calls to (21) Appl. No.: 11/062,293 most native functions that are non-inlineable or opaque With calls