ai.rapids.cudf.nvcomp

Class LZ4Decompressor

java.lang.Object

ai.rapids.cudf.nvcomp.LZ4Decompressor

public class LZ4Decompressor
extends Object

Single-buffer decompression using LZ4

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LZ4Decompressor.Configuration LZ4 decompression settings corresponding to an LZ4 compressed input.

Constructor Summary

Constructors

Constructor and Description
LZ4Decompressor()

Method Summary

Modifier and Type	Method and Description
static LZ4Decompressor.Configuration	configure(BaseDeviceMemoryBuffer compressed, Cuda.Stream stream) Get the decompression configuration from compressed data.
static void	decompressAsync(BaseDeviceMemoryBuffer compressed, LZ4Decompressor.Configuration config, BaseDeviceMemoryBuffer temp, BaseDeviceMemoryBuffer outputBuffer, Cuda.Stream stream) Asynchronously decompress data compressed with the LZ4 compressor.
static boolean	isLZ4Data(BaseDeviceMemoryBuffer buffer, Cuda.Stream stream) Determine if a buffer is data compressed with LZ4.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LZ4Decompressor

public LZ4Decompressor()

Method Detail

isLZ4Data

public static boolean isLZ4Data(BaseDeviceMemoryBuffer buffer,
                                Cuda.Stream stream)

Determine if a buffer is data compressed with LZ4.

Parameters:

buffer - data to examine

stream - CUDA stream to use

Returns:

true if the data is LZ4 compressed

configure

public static LZ4Decompressor.Configuration configure(BaseDeviceMemoryBuffer compressed,
                                                      Cuda.Stream stream)

Get the decompression configuration from compressed data. NOTE: The resulting configuration object must be closed to avoid a native memory leak.

Parameters:

compressed - data that has been compressed by the LZ4 compressor

stream - CUDA stream to use

Returns:

decompression configuration for the specified input

decompressAsync

public static void decompressAsync(BaseDeviceMemoryBuffer compressed,
                                   LZ4Decompressor.Configuration config,
                                   BaseDeviceMemoryBuffer temp,
                                   BaseDeviceMemoryBuffer outputBuffer,
                                   Cuda.Stream stream)

Asynchronously decompress data compressed with the LZ4 compressor.

Parameters:

compressed - buffer containing LZ4-compressed data

config - decompression configuration

temp - temporary storage buffer

outputBuffer - buffer that will be written with the uncompressed output

stream - CUDA stream to use