The general goal of JEP 143 was to increase the overall performance of how the JVM manages contention over locked Java object monitors. The improvements to contended locking were all internal to the JVM and do not require any developer actions to benefit from them. The overall improvement goals were related to faster operations. These include:
- Faster monitor enter
- Faster monitor exit
- Faster notifications
The notifications are the notify() and notifyAll() operations that are called when the locked status of an object is changed. Testing this improvement is not something you can easily accomplish. Greater efficiency, at any level, is welcome, so this improvement is one we can be thankful for even without any easily observable ...
