December 2015 - java-devroom - lists.fosdem.org

IMPORTANT
by Mario Torre 11 Dec '15

11 Dec '15

Hello all! Did I say "please don't count on a further extension"? Well, of course, I meant "do" it ;) By popular demand, I'm extending the deadline until December the 15th, 23:59 CET, this is the last chance though, so please don't miss it!! Cheers, Mario -- pgp key: http://subkeys.pgp.net/ PGP Key ID: 80F240CF Fingerprint: BA39 9666 94EC 8B73 27FA FC7C 4086 63E3 80F2 40CF Java Champion - Blog: http://neugens.wordpress.com - Twitter: @neugens Proud GNU Classpath developer: http://www.classpath.org/ OpenJDK: http://openjdk.java.net/projects/caciocavallo/ Please, support open standards: http://endsoftpatents.org/

1 0

Talk Proposal: Fault Injection Testing With BMUnit
by Andrew Dinn 11 Dec '15

11 Dec '15

Hi Mario, This talk is a potential fallback in case it is not possible to provide a talk on Byteman-Thermostat. Title: Fault Injection Testing With BMUnit Duration: 45 minutes? Abstract: BMUnit is the package which integrates Byteman into JUnit and TestNG, enabling you to locally redefine the behaviour of application or JDK runtime code for the duration of a single test or group of related tests. BMUnit is very simple to use; just add a few annotations to your test classes and place a few jars in your classpath. This talk will explain how BMUnit works by presenting and executing tests which exemplify the 3 most common use cases: injecting trace code so you can be sure your tests enter the expected code paths injecting validation rules so you can assert that specific outcomes do occur injecting 'faults' to modify state or control flow, driving the application or JDK runtime down the path needed to exercise a desired test scenario Bio: Andrew Dinn is a member of Red Hat's OpenJDK team. He also leads JBoss project Byteman. regards, Andrew Dinn -----------

1 0

Talk Proposal: Shenandoah, Theory and Practice
by Christine Flood 10 Dec '15

10 Dec '15

The Difference between Theory and Practice is greater in practice then it is in theory. We are on the brink of our first official release of Shenandoah. It took two weeks to write up the design and over two years to implement it. This talk will discuss the differences between what we initially proposed and what we now have working. An honest look at compromises, wrong turns, and innovations. We will finish the talk with the theory of what comes next: A high level design for NUMA aware GC, a sketch of a plan for truly pauseless GC, a brief consideration of reference counting... Christine

1 0

CfP: Marlin renderer, a successful fork and join the OpenJDK 9 project
by Laurent Bourgès 02 Dec '15

02 Dec '15

Here is my talk proposal (25 minutes) on my personal contribution to open source software: Title: Marlin renderer, a successful fork and join the OpenJDK 9 project Abstract: The Marlin renderer is an open source java2D anti-aliasing renderer, forked from the OpenJDK's Pisces renderer, i.e. a pure-Java software renderer. This small project, with only 2 contributors (Me and Andrea Aimé), is hosted on my github (GPL v2) since 01/2014 to provide a faster alternative with very good scalability to both Pisces & Ductus (closed-source C) renderers. I made an important personal effort to optimize the memory footprint, rewrite Pisces's algorithms, run regression tests & our MapBench benchmarks (serialized maps). Many binary releases were published in 2014, compatible with both OpenJDK & Oracle JDK 7 / 8, but mainly used by the GeoServer & gvSIG CE projects (web and desktop open source GIS) which provided complex rendering use cases and user feedbacks. Thanks to my participation to FOSDEM 2015, I discussed with the OpenJDK community how to contribute the Marlin renderer back. I joined the graphics-rasterizer project in march 2015 to contribute Marlin as a new standalone renderer for OpenJDK9. I worked hard with Jim Graham & Phil Race (java2d team) and we proposed the JEP 265: Marlin Graphics Renderer in July 2015. It is now integrated and that intensive work made Marlin even faster ! In this session, you will learn how Marlin works (java2d pipeline, AA algorithm, tuning & benchmark results), how to use it, what performance optimizations were made and of course, my feedback on contributing to OpenJDK. Of course, I will also make a demo comparing OpenJDK Pisces vs Marlin on intensive rendering tasks (based on MapBench). Finally I would really like to get people helping me to implement new algorithms (clipping, more precise pixel coverage computation, efficient gamma correction) or just try Marlin with their applications to gather more user feedbacks. Recording me on audio and/or video: acceptable under a CC-BY-2.0 license (DEFAULT) Bio: Laurent Bourgès lives in Grenoble, France, and works as a software engineer for a public astronomical research laboratory but contributes to several open source java projects (eclipselink, openjdk, gvsig CE and astronomical software libraries). He is developing java desktop and web applications for 15 years (since 1.1.7) on unix machines (sun, linux) but is strongly interested by performance and concurrency issues (profiling, benchmarking, algorithms). He started contributions to OpenJDK 8 in 2013 (core-libs patches) and joined the graphics-rasterizer project in march 2015 to contribute the Marlin renderer back to OpenJDK9. Project URL: https://github.com/bourgesl/ <https://github.com/bourgesl/marlin-renderer> Microblog URL: @laurent_bourges <https://twitter.com/laurent_bourges> -- Laurent Bourgès

1 0