[concurrency-interest] ConcurrentHashMap - feature request
Mon, 23 Dec 2002 08:05:37 -0800
ConcurrentHashMap provides exactly the support you need. It implements the ConcurrentMap implementation which consists solely of the putIfAbsent method. See http://gee.cs.oswego.edu/dl/concurrent/dist/docs/index.html for details. Also, it's worth noting that locking up the entire map in order to perform this operation would defeat the purpose of the class (high concurrency).