Javolution

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.
Javolution
Developer(s)Jean-Marie Dautelle
Stable release
7.0.0 / July 2, 2017 (2017-07-02)
Repository
Written inJava, C++
Operating systemCross-platform
Size480 KB (archived)
TypeReal-Time Library
LicenseBSD
Websitejavolution.org

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
  1. Fully Time Deterministic Java
  2. javolution.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
  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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