Challenges in addition to Solutions as long as Embedded Java TINI CORBA ORB Project Goals of this Presentation Main Sources Other Sources

Challenges in addition to Solutions as long as Embedded Java TINI CORBA ORB Project Goals of this Presentation Main Sources Other Sources www.phwiki.com

Challenges in addition to Solutions as long as Embedded Java TINI CORBA ORB Project Goals of this Presentation Main Sources Other Sources

Figuero, Frank, Contributing Writer has reference to this Academic Journal, PHwiki organized this Journal Challenges in addition to Solutions as long as Embedded Java Michael Wortley Computer Integrated Surgery March 1, 2001 TINI CORBA ORB Project Goal: to port Java based CORBA ORB to TINI board Problem: Converting from JDK1.3 to TINI’s embedded Java Goals of this Presentation Provide background of Java’s benefits Show how embedded environment presents challenges to the Java plat as long as m Highlight available solutions

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Main Sources “Challenges to Embedded Java” Charlie McDowell, UC Santa Cruz 1998 PowerPoint presentation “Technical Overview of Embedded Java” 4/2000, From Sun Website Other Sources “Java Schism” Rick Cook, Java Report 6/99 “About Java Technology” Sun Website TINI software in as long as mation from www.iButton.com Goals of this Presentation Provide background of Java’s benefits Show how embedded environment presents challenges to the Java plat as long as m Highlight available solutions

“Write Once, Run Anywhere.” Why do Programmers like Java Compiled in addition to Interpreted Easy Upgrades through API JVM = Portability

Goals of this Presentation Provide background of Java’s benefits Show how embedded environment presents challenges to the Java plat as long as m Highlight available solutions “Challenges to Embedded Java” PowerPoint Presentation by Charlie McDowell, 1998. Key Points Java is superior to C++ in ease of development, maintenance, in addition to portability Java API in addition to JVM put too much stress on embedded processors Java tends to have slower execution time

Key Points Automatic garbage collection causes problems Java lacks real-time support Java Memory Requirements Storage of Java API up to 9 MB as long as JDK1.1 JVM between 300 in addition to 800 KB Garbage Collection Overhead copy collectors -> requires 2x max. heap usage conservative collectors -> memory leaks Java Execution Time Interpreted code runs more slowly than compiled code Resolving references prior to execution reduces run time Using final in addition to static methods can reduce dynamic dispatch of functions Garbage Collection eats memory

Garbage Collection Part of what makes Java simple Problematic as long as real-time applications Java in addition to Real-Time Applications Java lacks: reliable methods of estimating worst case ability to measure CPU time, memory use en as long as cement of time in addition to space budgets real-time garbage collection IMPROVEMENTS NEEDED! Suggested Optimizations as long as Embedded Java Reduce API to free memory Use final in addition to static functions to decrease execution time Eliminate automatic garbage collection Find ways to improve real-time per as long as mance

Non-Sun Embedded Java PERC by NewMonics real-time garbage collection VxWorks only 628 KB JN from UCSC JIT from Kaffe reduced API Goals of this Presentation Provide background of Java’s benefits Show how embedded environment presents challenges to the Java plat as long as m Highlight available solutions “Technical Overview of Embedded Java Technology” Sun Microsystems http://java.sun.com/products/embeddedjava/overview.html

Improvements in Sun’s Embedded Java Configurable API Configurable JVM JavaFilter tool JavaCodeCompact JavaDataCompact New Programming Tools JavaFilter input source code Java API output list of necessary API classes in addition to methods New Programming Tools JavaCodeCompact input Source Code Java API list of necessary API classes in addition to methods output data structures in C code

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New Programming Tools JavaDataCompact input associated data files Java API output data structures in C code How this Relates to TINI TINI’s embedded Java is Sun compatible. Limitted API Development Tools TINI API TINIConvertor Conclusions about Embedded Java Increasing complexity of embedded devices will as long as ce makers to use high level language Java’s fast development time in addition to portability are ideal as long as large manufacturers Competition needed to drive advancements

So long, in addition to thanks as long as all the fish.

Figuero, Frank Contributing Writer

Figuero, Frank is from United States and they belong to Latin Beat and they are from  Gardena, United States got related to this Particular Journal. and Figuero, Frank deal with the subjects like Hispanic Interest; Music

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