[ 源代码： jctools ]
软件包：libjctools-java（2.0.2-1）
Java Concurrency Tools for the JVM
JCTools offers some concurrent data structures currently missing from the JDK:
* 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)
* SPMC - Single Producer Multi Consumer (Lock less, bounded)
* MPMC - Multi Producer Multi Consumer (Lock less, bounded)
* An expanded queue interface (MessagePassingQueue):
* relaxedOffer/Peek/Poll: trade off conflated guarantee on full/empty queue
state with improved performance.
* drain/fill: batch read and write methods for increased throughput
and reduced contention