org.openjdk.jmc.flightrecorder.internal.parser.v1

Class ChunkLoaderV1

java.lang.Object

org.openjdk.jmc.flightrecorder.internal.parser.v1.ChunkLoaderV1

All Implemented Interfaces:

java.util.concurrent.Callable<byte[]>, IChunkLoader

public class ChunkLoaderV1
extends java.lang.Object
implements IChunkLoader

Field Summary

Fields

Modifier and Type	Field and Description
private static long	CONSTANT_POOL_EVENT_TYPE
private LoaderContext	context
private byte[]	data
private ChunkStructure	header

Constructor Summary

Constructors

Constructor and Description
ChunkLoaderV1(ChunkStructure header, byte[] data, LoaderContext context)

Method Summary

Modifier and Type	Method and Description
byte[]	call() Perform the chunk loading.
static IChunkLoader	create(Chunk input, LoaderContext context)
static ChunkInfo	getInfo(Chunk input, long position)
long	getTimestamp()
private static long	readConstantPoolEvent(IDataInput input, TypeManager manager)

Methods inherited from class java.lang.Object

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

Field Detail

CONSTANT_POOL_EVENT_TYPE

private static final long CONSTANT_POOL_EVENT_TYPE

See Also:

Constant Field Values

header

private final ChunkStructure header

data

private final byte[] data

context

private final LoaderContext context

Constructor Detail

ChunkLoaderV1

public ChunkLoaderV1(ChunkStructure header,
                     byte[] data,
                     LoaderContext context)

Method Detail

call

public byte[] call()
            throws java.lang.Exception

Description copied from interface: IChunkLoader

Perform the chunk loading.

Specified by:

call in interface java.util.concurrent.Callable<byte[]>

Specified by:

call in interface IChunkLoader

Returns:

The byte array that was backing the chunk data. After returning this, the chunk loader is done with the array and it may be reused for a new chunk.

Throws:

java.lang.Exception

readConstantPoolEvent

private static long readConstantPoolEvent(IDataInput input,
                                          TypeManager manager)
                                   throws java.io.IOException,
                                          InvalidJfrFileException

Throws:

java.io.IOException

InvalidJfrFileException

create

public static IChunkLoader create(Chunk input,
                                  LoaderContext context)
                           throws java.io.IOException,
                                  CouldNotLoadRecordingException

Throws:

java.io.IOException

CouldNotLoadRecordingException

getInfo

public static ChunkInfo getInfo(Chunk input,
                                long position)
                         throws java.io.IOException,
                                CouldNotLoadRecordingException

Throws:

java.io.IOException

CouldNotLoadRecordingException

getTimestamp

public long getTimestamp()

Specified by:

getTimestamp in interface IChunkLoader

Returns:

The chunk timestamp. The unit is not specified, it might be milliseconds or nanoseconds since 1970, but the important thing is that it is unique for every chunk in a recording.