This repository contains SnapTree, a concurrent AVL tree with fast cloning, snapshots, and consistent iteration. It is described in the paper "A Practical Concurrent Binary Search Tree", by N. Bronson, J. Casper, H. Chafi, and K. Olukotun, published in PPoPP'10.

SnapTreeMap is a drop-in replacement for ConcurrentSkipListMap, with the additional guarantee that clone() is atomic and iteration has snapshot isolation. For more details see http://ppl.stanford.edu/papers/ppopp207-bronson.pdf

The current release is 0.2, which has been published to the maven central repository under the groupId edu.stanford.ppl and the artifactId snaptree.

VERSION 0.2:

• Incorporates an important bugfix to isEmpty()

VERSION 0.1:

• Initial release