Javolution

Javolution
Developer(s)	Jean-Marie Dautelle
Stable release	7.0.0 / July 2, 2017
Repository	github.com/javolution/javolution ;
Written in	Java, C++
Operating system	Cross-platform
Size	480 KB (archived)
Type	Real-Time Library
License	BSD
Website	javolution.org

Last updated December 31, 2023

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.

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References

↑ Fully Time Deterministic Java
↑ javolution.util
↑ Collection Views
↑ Realtime Annotation
↑ Fractal Table
↑ OSGi Contexts
↑ Concurrent Contexts
↑ Compute Contexts
↑ Struct/Union
↑ Perfometer Utility ^{[ permanent dead link ]}
↑ XML Marshalling/unmarshalling Facility
↑ StAX-Like Readers/Writers
↑ Javolution Configuration Management
↑ "Javolution C++ Overview" (PDF). Archived from the original (PDF) on 2013-10-01. Retrieved 2013-08-19.
↑ 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 Archived 2009-02-05 at the Wayback Machine – Java Developer Journal Article

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[1] Fully Time Deterministic Java

[2] volution.util

[3] Collection Views

[4] Realtime Annotation

[5] Fractal Table

[6] OSGi Contexts

[7] Concurrent Contexts

[8] Compute Contexts

[9] Struct/Union

[10] Perfometer Utility ^{[ permanent dead link ]}

[11] XML Marshalling/unmarshalling Facility

[12] StAX-Like Readers/Writers

[13] Javolution Configuration Management

[14] "Javolution C++ Overview" (PDF). Archived from the original (PDF) on 2013-10-01. Retrieved 2013-08-19.

[15] Javolution Usage Overview

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