Javolution

Javolution
Developer(s)	Jean-Marie Dautelle
Stable release	5.3 / 2009-03-30; 3 months ago
Written in	Java
Operating system	Cross-platform
Size	782 KB (archived)
Development status	Active
Type	Real-Time Library
License	BSD
Website	http://javolution.org

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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.