Uses of Interface
com.yahoo.memory.Memory

Uses of Memory in com.yahoo.memory

Classes in com.yahoo.memory that implement Memory

Modifier and Type	Class and Description
class	AllocMemory The AllocMemory class is a subclass of NativeMemory and is used to allocate direct, off-heap native memory, which is then accessed by the NativeMemory methods.
class	MemoryMappedFile MemoryMappedFile class extends NativeMemory and is used to memory map files (including those > 2GB) off heap.
class	MemoryRegion The MemoryRegion class implements the Memory interface and provides a means of hierarchically partitioning a large block of native memory into smaller regions of memory, each with their own capacity and offsets.
class	MemoryRegionR Read-only version of MemoryRegion
class	NativeMemory The NativeMemory class implements the Memory interface and is used to access Java byte arrays, long arrays and ByteBuffers by presenting them as arguments to the constructors of this class.

Methods in com.yahoo.memory that return Memory

Modifier and Type	Method and Description
Memory	NativeMemory.asReadOnlyMemory()
Memory	MemoryRegion.asReadOnlyMemory()
Memory	Memory.asReadOnlyMemory() Returns a read-only version of this memory
Memory	MemoryRequest.request(long capacityBytes) Request new Memory with the given capacity.
Memory	MemoryRequest.request(Memory origMem, long copyToBytes, long capacityBytes) Request for allocate, copy and clear.

Methods in com.yahoo.memory with parameters of type Memory

Modifier and Type	Method and Description
static int	MemoryUtil.binarySearchLongs(Memory mem, int fromLongIndex, int toLongIndex, long key) Searches a range of the specified array of longs for the specified value using the binary search algorithm.
static void	NativeMemory.copy(Memory source, long srcOffsetBytes, Memory destination, long dstOffsetBytes, long lengthBytes) Copies bytes from a source Memory to the destination Memory.
static void	MemoryUtil.copy(Memory source, long srcOffsetBytes, Memory destination, long dstOffsetBytes, long lengthBytes) Deprecated. this method was moved to NativeMemory.copy(Memory, long, Memory, long, long)
void	MemoryRequest.free(Memory mem) The given Memory with its capacity is to be freed
void	MemoryRequest.free(Memory memToFree, Memory newMem) The given memToFree with its capacity is to be freed.
Memory	MemoryRequest.request(Memory origMem, long copyToBytes, long capacityBytes) Request for allocate, copy and clear.

Constructors in com.yahoo.memory with parameters of type Memory

Constructor and Description
MemoryRegion(Memory memory, long memOffsetBytes, long capacityBytes) Defines a region of the given parent Memory by defining an offset and capacity that are within the boundaries of the parent.
MemoryRegion(Memory memory, long memOffsetBytes, long capacityBytes, MemoryRequest memReq) Defines a region of the given parent Memory by defining an offset and capacity that are within the boundaries of the parent.
MemoryRegionR(Memory memory, long memOffsetBytes, long capacityBytes, MemoryRequest memReq)