Package org.apache.cassandra.utils.concurrent

Interface Summary

Interface	Description
RefCounted	An object that needs ref counting does the following: - defines a Tidy object that will cleanup once it's gone, (this must retain no references to the object we're tracking (only its resources and how to clean up)) - implements RefCounted - encapsulates a RefCounted.Impl, to which it proxies all calls to RefCounted behaviours - ensures no external access to the encapsulated Impl, and permits no references to it to leak - users must ensure no references to the sharedRef leak, or are retained outside of a method scope either.
RefCounted.Tidy
WaitQueue.Signal	A Signal is a one-time-use mechanism for a thread to wait for notification that some condition state has transitioned that it may be interested in (and hence should check if it is).

Class Summary

Class	Description
Locks
OpOrder	A class for providing synchronization between producers and consumers that do not communicate directly with each other, but where the consumers need to process their work in contiguous batches.
OpOrder.Group	Represents a group of identically ordered operations, i.e.
Ref	A single managed reference to a RefCounted object
RefCounted.Impl
Refs<T extends RefCounted>	A collection of managed Ref references to RefCounted objects, and the objects they are referencing.
SimpleCondition
WaitQueue	A relatively easy to use utility for general purpose thread signalling.
WaitQueue.AbstractSignal	An abstract signal implementation