The Contended Locking project is divided into a series of buckets each of which represents a focused set of changes on Monitors with potential performance implications. The development strategy is to define each bucket as a milestone and within each milestone, prepare the code changes, develop micro-benchmarks, run formal performance testing against the changes and integrate the code changes.

Milestone 1 (End of July 2014)
*Implement field reordering and cache line alignment

Update: This bucket was pushed via JDK-8049737 in JDK9-B37.

Milestone 2 (End of August 2014)
*Implement speed up PlatformEvent unpark()

Update: This bucket was pushed via JDK-8061552 in JDK9-B40.

Milestone 3 (End of September 2014)
*Implement fast Java Monitor Enter operations

Update: This bucket was pushed via JDK-8061553 in JDK9-B53.

Milestone 4 (End of October 2014)
*Implement fast Java Monitor Exit operations

Update: This bucket was pushed via JDK-8073165 in JDK9-B64.

Milestone 5 (End of November 2014)
*Implement fast Java Monitor Notify/NotifyAll operations

Update: This bucket was pushed via JDK-8075171 in JDK9-B76.

Milestone 6 (End of December 2014)
*Implement adaptive spin improvements and SpinPause on SPARC

Update: Moved the Adaptive Spin and SpinPause on SPARC improvements
out of this JEP to a future RFE due to continued investigation into better
optimizations on the latest hardware.