Uses of Class
ai.rapids.cudf.HostMemoryBuffer

Packages that use HostMemoryBuffer

Package	Description
ai.rapids.cudf

Uses of HostMemoryBuffer in ai.rapids.cudf

Fields in ai.rapids.cudf declared as HostMemoryBuffer

Modifier and Type	Field and Description
HostMemoryBuffer	HostColumnVectorCore.OffHeapState.data
HostMemoryBuffer	HostColumnVectorCore.OffHeapState.offsets
HostMemoryBuffer	HostColumnVectorCore.OffHeapState.valid

Methods in ai.rapids.cudf that return HostMemoryBuffer

Modifier and Type	Method and Description
HostMemoryBuffer	DefaultHostMemoryAllocator.allocate(long bytes)
static HostMemoryBuffer	PinnedMemoryPool.allocate(long bytes) Factory method to create a host buffer but preferably pointing to pinned memory.
HostMemoryBuffer	HostMemoryAllocator.allocate(long bytes) Allocate memory, but be sure to close the returned buffer to avoid memory leaks.
static HostMemoryBuffer	HostMemoryBuffer.allocate(long bytes) Allocate memory, but be sure to close the returned buffer to avoid memory leaks.
HostMemoryBuffer	DefaultHostMemoryAllocator.allocate(long bytes, boolean preferPinned)
HostMemoryBuffer	HostMemoryAllocator.allocate(long bytes, boolean preferPinned) Allocate memory, but be sure to close the returned buffer to avoid memory leaks.
static HostMemoryBuffer	HostMemoryBuffer.allocate(long bytes, boolean preferPinned) Allocate memory, but be sure to close the returned buffer to avoid memory leaks.
static HostMemoryBuffer	PinnedMemoryPool.allocate(long bytes, HostMemoryAllocator hostMemoryAllocator) Factory method to create a host buffer but preferably pointing to pinned memory.
static HostMemoryBuffer	HostMemoryBuffer.allocateRaw(long bytes) Allocate host memory bypassing the default allocator.
HostMemoryBuffer	HostColumnVectorCore.getData() Returns the data buffer for a given host side column vector
HostMemoryBuffer	JCudfSerialization.HostConcatResult.getHostBuffer()
HostMemoryBuffer	HostColumnVectorCore.getHostBufferFor(BufferType type) Get access to the raw host buffer for this column.
HostMemoryBuffer	HostColumnVectorCore.getOffsets() Returns the offset buffer
HostMemoryBuffer	HostColumnVectorCore.getValidity() Returns the validity buffer for a given host side column vector
HostMemoryBuffer	MultiBufferDataSource.hostRead(long offset, long amount)
abstract HostMemoryBuffer	DataSource.hostRead(long offset, long amount) Read data from the source at the given offset.
static HostMemoryBuffer	HostMemoryBuffer.mapFile(File path, FileChannel.MapMode mode, long offset, long length) Create a host buffer that is memory-mapped to a file.
HostMemoryBuffer	HostMemoryBuffer.slice(long offset, long len) Slice off a part of the host buffer.
HostMemoryBuffer	HostMemoryBuffer.sliceWithCopy(long offset, long len) Slice off a part of the host buffer, actually making a copy of the data.
static HostMemoryBuffer	PinnedMemoryPool.tryAllocate(long bytes) Factory method to create a pinned host memory buffer.

Methods in ai.rapids.cudf with parameters of type HostMemoryBuffer

Modifier and Type	Method and Description
static ContiguousTable	JCudfSerialization.concatToContiguousTable(JCudfSerialization.SerializedTableHeader[] headers, HostMemoryBuffer[] dataBuffers) Concatenate multiple tables in host memory into a contiguous table in device memory.
static JCudfSerialization.HostConcatResult	JCudfSerialization.concatToHostBuffer(JCudfSerialization.SerializedTableHeader[] headers, HostMemoryBuffer[] dataBuffers)
static JCudfSerialization.HostConcatResult	JCudfSerialization.concatToHostBuffer(JCudfSerialization.SerializedTableHeader[] headers, HostMemoryBuffer[] dataBuffers, HostMemoryAllocator hostMemoryAllocator) Concatenate multiple tables in host memory into a single host table buffer.
void	BaseDeviceMemoryBuffer.copyFromHostBuffer(HostMemoryBuffer src) Copy everything from src to this buffer starting at the beginning of this buffer.
void	BaseDeviceMemoryBuffer.copyFromHostBuffer(HostMemoryBuffer src, Cuda.Stream stream) Copy entire host buffer starting at the beginning of this buffer using a CUDA stream.
void	BaseDeviceMemoryBuffer.copyFromHostBuffer(HostMemoryBuffer src, long srcOffset, long length) Copy a subset of src to this buffer starting at the beginning of this.
void	BaseDeviceMemoryBuffer.copyFromHostBuffer(long destOffset, HostMemoryBuffer src, long srcOffset, long length) Copy a subset of src to this buffer starting at destOffset.
void	HostMemoryBuffer.copyFromHostBuffer(long destOffset, HostMemoryBuffer srcData, long srcOffset, long length) Copy the contents of the given buffer to this buffer
void	BaseDeviceMemoryBuffer.copyFromHostBuffer(long destOffset, HostMemoryBuffer src, long srcOffset, long length, Cuda.Stream stream) Copy a subset of src to this buffer starting at destOffset using the specified CUDA stream.
void	BaseDeviceMemoryBuffer.copyFromHostBufferAsync(HostMemoryBuffer src, Cuda.Stream stream) Copy entire host buffer starting at the beginning of this buffer using a CUDA stream.
void	BaseDeviceMemoryBuffer.copyFromHostBufferAsync(long destOffset, HostMemoryBuffer src, long srcOffset, long length, Cuda.Stream stream) Copy a subset of src to this buffer starting at destOffset using the specified CUDA stream.
void	HostBufferConsumer.handleBuffer(HostMemoryBuffer buffer, long len) Consume a buffer.
long	MultiBufferDataSource.hostRead(long offset, HostMemoryBuffer dest)
abstract long	DataSource.hostRead(long offset, HostMemoryBuffer dest) Read data from the source at the given offset into dest.
protected void	DataSource.onHostBufferDone(HostMemoryBuffer buffer) Called when the buffer returned from hostRead is done.
static Table	JCudfSerialization.readAndConcat(JCudfSerialization.SerializedTableHeader[] headers, HostMemoryBuffer[] dataBuffers)
static Table	Table.readAvro(AvroOptions opts, HostMemoryBuffer buffer, long offset, long len) Read Avro formatted data.
static Table	Table.readCSV(Schema schema, CSVOptions opts, HostMemoryBuffer buffer, long offset, long len) Read CSV formatted data.
long	HostBufferProvider.readInto(HostMemoryBuffer buffer, long len) Place data into the given buffer.
static TableWithMeta	Table.readJSON(JSONOptions opts, HostMemoryBuffer buffer, long offset, long len) Read JSON formatted data and infer the column names and schema.
static Table	Table.readJSON(Schema schema, JSONOptions opts, HostMemoryBuffer buffer, long offset, long len) Read JSON formatted data.
static Table	Table.readJSON(Schema schema, JSONOptions opts, HostMemoryBuffer buffer, long offset, long len, int emptyRowCount) Deprecated. This method is deprecated since emptyRowCount is not used. Use the method without emptyRowCount instead.
static Table	Table.readORC(ORCOptions opts, HostMemoryBuffer buffer, long offset, long len) Read ORC formatted data.
static Table	Table.readParquet(ParquetOptions opts, HostMemoryBuffer buffer, long offset, long len) Read parquet formatted data.
static JCudfSerialization.TableAndRowCountPair	JCudfSerialization.readTableFrom(JCudfSerialization.SerializedTableHeader header, HostMemoryBuffer hostBuffer)
static void	JCudfSerialization.readTableIntoBuffer(InputStream in, JCudfSerialization.SerializedTableHeader header, HostMemoryBuffer buffer) After reading a header for a table read the data portion into a host side buffer.
static HostColumnVector[]	JCudfSerialization.unpackHostColumnVectors(JCudfSerialization.SerializedTableHeader header, HostMemoryBuffer hostBuffer) Deserialize a serialized contiguous table into an array of host columns.
static void	JCudfSerialization.writeConcatedStream(JCudfSerialization.SerializedTableHeader[] headers, HostMemoryBuffer[] dataBuffers, OutputStream out) Take the data from multiple batches stored in the parsed headers and the dataBuffer and write it out to out as if it were a single buffer.

Constructors in ai.rapids.cudf with parameters of type HostMemoryBuffer

Constructor and Description
HostColumnVector(DType type, long rows, Optional<Long> nullCount, HostMemoryBuffer hostDataBuffer, HostMemoryBuffer hostValidityBuffer, HostMemoryBuffer offsetBuffer, List<HostColumnVectorCore> nestedHcv) Create a new column vector with data populated on the host.
HostColumnVectorCore(DType type, long rows, Optional<Long> nullCount, HostMemoryBuffer data, HostMemoryBuffer validity, HostMemoryBuffer offsets, List<HostColumnVectorCore> nestedChildren)
HostConcatResult(JCudfSerialization.SerializedTableHeader tableHeader, HostMemoryBuffer tableBuffer)
MultiBufferDataSource(HostMemoryAllocator allocator, HostMemoryBuffer... buffers) Create a new data source backed by multiple buffers.
MultiBufferDataSource(HostMemoryBuffer... buffers) Create a new data source backed by multiple buffers.
ORCChunkedReader(long chunkReadLimit, long passReadLimit, long outputRowSizingGranularity, ORCOptions opts, HostMemoryBuffer buffer, long offset, long len) Construct a chunked ORC reader instance, similar to ORCChunkedReader(long, long, ORCOptions, HostMemoryBuffer, long, long), with an additional parameter to control the granularity of the output table.
ORCChunkedReader(long chunkReadLimit, long passReadLimit, ORCOptions opts, HostMemoryBuffer buffer, long offset, long len) Construct the reader instance from read limits, output row granularity, and a file already loaded in a memory buffer.
ParquetChunkedReader(long chunkSizeByteLimit, long passReadLimit, ParquetOptions opts, HostMemoryBuffer buffer, long offset, long len) Construct the reader instance from a read limit and a file already read in a memory buffer.
ParquetChunkedReader(long chunkSizeByteLimit, ParquetOptions opts, HostMemoryBuffer buffer, long offset, long len) Construct the reader instance from a read limit and a file already read in a memory buffer.