Package org.apache.cassandra.utils.memory

Interface Summary

Interface	Description
BufferPool.DebugLeaks
Cloner	Allow cloning of partition elements
HeapPool.Logged.Listener
MemtableCleaner	The cleaner is used by MemtableCleanerThread in order to reclaim space from memtables, normally by flushing the largest memtable.

Class Summary

Class	Description
BufferPool	A pool of ByteBuffers that can be recycled to reduce system direct memory fragmentation and improve buffer allocation performance.
BufferPools
ByteBufferCloner	Cloner class that can be use to clone partition elements using on-heap or off-heap buffers.
EnsureOnHeap
HeapCloner	Cloner class that can be use to clone partition elements on heap.
HeapPool
HeapPool.Allocator
HeapPool.Logged
MemoryUtil
MemtableAllocator
MemtableAllocator.SubAllocator	Mark the BB as unused, permitting it to be reclaimed
MemtableBufferAllocator
MemtableCleanerThread<P extends MemtablePool>	A thread that reclaims memory from a MemtablePool on demand.
MemtablePool	Represents an amount of memory used for a given purpose, that can be allocated to specific tasks through child MemtableAllocator objects.
NativeAllocator	This NativeAllocator uses global slab allocation strategy with slab size that scales exponentially from 8KiB to 1MiB to serve allocation of up to 128KiB.
NativePool
SlabAllocator	+ * The SlabAllocator is a bump-the-pointer allocator that allocates + * large (1MiB) global regions and then doles them out to threads that + * request smaller sized (up to 128KiB) slices into the array.
SlabPool