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Java Concurrency Tools for the JVM. This project aims to offer some concurrent data structures currently missing from the JDK. There’s more to come and contributions/suggestions are most welcome. JCTools has enjoyed support from the community and contributions in the form of issues/tests/documentation/code have helped it grow. JCTools offers excellent performance at a reasonable price (FREE! under the Apache 2.0 License). It’s stable and in use by such distinguished frameworks as Netty, RxJava and others. JCTools is also used by commercial products with great results. JCTools is maven built and requires an existing Maven installation and JDK8 (only for building, runtime is 1.6 compliant). With ‘MAVEN_HOME/bin’ on the path and JDK8 set to your ‘JAVA_HOME’ you should be able to run “mvn install” from this directory. While you are free to copy & extend JCTools, we would much prefer it if you have a versioned dependency on JCTools to enable better support, upgrade paths and discussion.
Features
- SPSC/MPSC/SPMC/MPMC variations for concurrent queues
- SPSC - Single Producer Single Consumer (Wait Free, bounded and unbounded)
- MPSC - Multi Producer Single Consumer (Lock less, bounded and unbounded)
- An expanded queue interface (MessagePassingQueue)
- MPMC - Multi Producer Multi Consumer (Lock less, bounded)
- SPSC/MPSC linked array queues (bounded and unbounded) offer a balance between performance, allocation and footprint
- Batch read and write methods for increased throughput and reduced contention
Project Samples
