Javolution Explained

Javolution
Logo Size:	250px
Developer:	Jean-Marie Dautelle
Latest Release Version:	7.0.0
Size:	480 KB (archived)
Programming Language:	Java, C++

Javolution is a real-time library aiming to make Java or Java-Like/C++ 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^[1] for the Java platform and native applications. It provides numerous high-performance classes and utilities useful to non real-time applications as well. Such as:

Collections^[2] classes, supporting custom views,^[3] closure-based iterations, map-reduce paradigm, parallel computing, etc.
Worst-case execution time behavior documented using Realtime^[4] Java annotations
Fractal structures^[5] to maintain high-performance regardless of the size of the data
OSGi contexts^[6] allowing cross cutting concerns (concurrency, logging, security, ...) to be addressed at run-time through OSGi published services without polluting the application code (separation of concerns)
Algorithmic parallel computing support with concurrent contexts^[7] and general-purpose computing on graphics processing units with compute context^[8]
Struct/Union^[9] base classes for direct interfacing with native applications
Perfometer^[10] utility class to measure worst-case execution time with high precision
XML Marshalling/unmarshalling facility^[11] capable of direct serialization/deserialization of existing classes (no intermediate data structure required)
StAX-like XML reader/writer^[12] which does not require object creation (such as String) and consequently faster than standard StAX
Simple yet powerful configuration management^[13] for your application.

Since version 6.0, Javolution makes it easy to port^[14] any Java source code to C++ for cross-platform native compilation. OSGi and JUnit have been ported and are included with the core C++ distribution.

All modules (Java and native) are built using maven. Javolution can be used^[15] either as an OSGi bundle (preferred) or as a standalone library.

References

http://arc.aiaa.org/doi/abs/10.2514/6.2007-6184 Fully Time Deterministic Java
http://javolution.org/apidocs/javolution/util/package-summary.html#package_description javolution.util
http://javolution.org/apidocs/javolution/util/FastCollection.html Collection Views
http://javolution.org/apidocs/javolution/lang/Realtime.html Realtime Annotation
http://javolution.org/apidocs/javolution/util/FastTable.html Fractal Table
http://javolution.org/apidocs/javolution/context/package-summary.html#package_description OSGi Contexts
http://javolution.org/apidocs/javolution/context/ConcurrentContext.html Concurrent Contexts
Web site: Compute Contexts . 2013-12-27 . 2013-12-29 . https://web.archive.org/web/20131229110939/http://javolution.org/apidocs/javolution/context/ComputeContext.html . dead .
http://javolution.org/apidocs/javolution/io/Struct.html Struct/Union
http://javolution.org/apidocs/javolution/testing/Perfometer.html Perfometer Utility
http://javolution.org/apidocs/javolution/xml/package-summary.html#package_description XML Marshalling/unmarshalling Facility
http://javolution.org/apidocs/javolution/xml/stream/package-summary.html#package_description StAX-Like Readers/Writers
http://javolution.org/apidocs/javolution/lang/Configurable.html Javolution Configuration Management
Web site: Javolution C++ Overview . 2013-08-19 . https://web.archive.org/web/20131001181951/http://javolution.org/src/site/doc/Javolution_Cpp_Overview.pdf . 2013-10-01 . dead .
http://javolution.org/apidocs/overview-summary.html#overview_description Javolution Usage Overview

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