Javolution

Javolution

Developer(s)	Jean-Marie Dautelle
Stable release	5.3 / March 30, 2009 (2009-03-30)
Repository	github.com/javolution/javolution
Written in	Java
Operating system	Cross-platform
Size	782 KB (archived)
Type	Real-Time Library
License	BSD
Website	http://javolution.org

Javolution is a real-time library aiming to make Java applications faster and more time predictable. Indeed, time-predictability can easily be ruined by the use of the standard library (lazy initialization, array resizing, etc.) which is not acceptable for safety-critical systems. The open source Javolution library addresses these concerns for the Java platform (ref. Fully Time Deterministic Java) and provides numerous high-performance classes and utilities useful to non real-time applications as well. Such as:

• Algorithmic parallel computing support with concurrent contexts.

• High performance implementation of standard Java packages (such as the javolution.util package holding real-time java.util collections implementations).

• Context programming in order to achieve true separation of concerns (logging, performance, etc).
• ValueType and Stack allocation support (thread-local pools or RTSJ ScopedMemory).
• Struct and Union base classes for direct interfacing with native applications.
• Real-Time StAX-like implementation (javolution.xml.stream) (does not implement StAX-API, but resembles it, uses similar naming) which does not force object creation.
• XML marshalling/unmarshalling working with existing Java classes and supporting references (including circular references).
• Simple yet powerful configuration management for your application.

The library is also fully RTSJ compliant (does not cause memory clash or an illegal access error with RTSJ Virtual Machines).

External links

• Javolution Website
• Fully Time Deterministic Java - AIAA Space 2007 Conference
• Validating Java for Safety-Critical Applications - AIAA Space 2005 Conference
• Turbo-Charging Java for Real-Time Applications - Java Developer Journal Article