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  • The State of JRuby: 1.5, AOT, Java 7

    by Werner Schuster on  Jun 02, 2010

    InfoQ caught up with Charles Nutter to talk about the state of JRuby: the 1.5 release, Ahead of Time compilation, and what's coming up in 1.6 and with features in Java 7.

  • JSR 292 and the Multi-lingual JVM

    by Charles Humble on  Apr 27, 2010 5

    Java 7 is looking to improve support for dynamic languages using the Java Virtual Machine for their runtime environment. John Rose has been leading a project to explore some options, and JSR 292 will standardise some of this work for Java 7. InfoQ takes a look at the problems JSR 292 solves, and talks to JRuby lead Charles Nutter to find out more about InvokeDynamic in practice.

  • Memory Barriers and JVM Concurrency

    by Dennis Byrne on  Mar 08, 2010 2

    Memory barriers, or fences, are a set of processor instructions used to apply ordering limitations on memory operations. This article explains the impact memory barriers have on the determinism of multi-threaded programs. We'll look at how memory barriers relate to JVM concurrency constructs such as volatile, synchronized and atomic conditionals.

Service Dynamics: the lazy man's way

Posted by Todor Boev on  Jul 29, 2009

This article presents one developer's approach to dealing with the "fiendishly hard" OSGi issue of service dynamics. The basic problem is described and two different solutions are proposed. 2

Ruby's Roots: Smalltalk Comeback and Randal Schwartz on Smalltalk

Posted by Werner Schuster on  Oct 27, 2008

Smalltalk, a language that has had a big influence on Ruby, is making a comeback. We take a look at the current situation and talk to Randal L. Schwartz about Smalltalk. 5

More Than Just Spin (Up) : Virtualization for the Enterprise and SaaS

Posted by Matthew Porter on  Aug 31, 2008

Cloud services have helped bring virtualization to the forefront. Its full power however, also includes other benefits such as high availability, disaster recovery, and rapid provisioning. 1

Using Ruby Fibers for Async I/O: NeverBlock and Revactor

Posted by Werner Schuster on  Aug 28, 2008

Ruby 1.9's Fibers and non-blocking I/O are getting more attention - we talked to Mohammad A. Ali of the NeverBlock project and Tony Arcieri of the Revactor project. 1

Exploring LISP on the JVM

Posted by Per Jacobsson on  Jul 10, 2008

One of the most exciting things in Java right now is the work being done to get other programming languages onto the JVM. If you want to try something very different from Java, Lisp is a great option. 12

Do Java 6 threading optimizations actually work? - Part II

Posted by Jeroen Borgers on  Jun 27, 2008

Jeroen Borgers examines if biased locking, lock coarsening, lock elision by escape analysis and adaptive spin locking techniques in the latest JVMs actually work in highly-concurrent apps. 3

Do Java 6 threading optimizations actually work?

Posted by Jeroen Borgers on  Jun 18, 2008

Jeroen Borgers examines if biased locking, lock coarsening, lock elision by escape analysis and adaptive spin locking techniques in the latest JVMs actually work in highly-concurrent apps. 16

A Look at Ruby Debuggers

Posted by Werner Schuster on  Apr 19, 2008

"Ruby has no debugger" - this misconception has stuck around for ages. Time to eradicate it: Ruby does indeed have powerful debugging support. We look at what's available for all Ruby implementations.

Real-Time Java for the Enterprise

Posted by Simon Ritter on  Mar 10, 2008

Simon Ritter explains the vision and capabilities of the Real-Time Java specification (RTSJ), which will bring guaranteed response times regardless of GC. 3

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