org.activemq.io.util
Interfaces 
MemoryBoundedObject
MemoryManageable
Classes 
ByteArray
ByteArrayCompression
ByteArrayFragmentation
MemoryBoundedMessageCache
MemoryBoundedObjectManager
MemoryBoundedPrioritizedQueue
MemoryBoundedQueue
MemoryBoundedQueueManager
SpooledBoundedActiveMQMessageQueue
WireByteArrayInputStream
WireByteArrayOutputStream
WireGZIPOutputStream