Package org.openjdk.jmc.flightrecorder.internal

Class FlightRecordingLoader

java.lang.Object

org.openjdk.jmc.flightrecorder.internal.FlightRecordingLoader

public final class FlightRecordingLoader
extends java.lang.Object

Helper class for loading flight recordings from disk.

Field Summary

Fields

Modifier and Type	Field	Description
private static byte[]	FLIGHT_RECORDER_MAGIC
private static java.util.logging.Logger	LOGGER
private static int	MIN_MEMORY_PER_THREAD
private static java.lang.String	SINGLE_THREADED_PARSER_PROPERTY_KEY
private static short	VERSION_0
private static short	VERSION_1
private static short	VERSION_2

Constructor Summary

Constructors

Constructor	Description
FlightRecordingLoader()

Method Summary

Modifier and Type	Method	Description
private static Chunk	createChunkInput(java.io.DataInput input, int firstByte, byte[] reusableBuffer)
private static IChunkLoader	createChunkLoader(IChunkSupplier chunkSupplier, LoaderContext context, byte[] buffer, boolean ignoreTruncatedChunk)
static IChunkSupplier	createChunkSupplier(java.io.InputStream input)
static IChunkSupplier	createChunkSupplier(java.io.RandomAccessFile input)
static IChunkSupplier	createChunkSupplier(java.io.RandomAccessFile input, java.util.Collection<ChunkInfo> chunks)
private static ChunkInfo	getChunkInfo(Chunk nextChunk, long nextChunkPos)
static EventArray[]	loadStream(java.io.InputStream stream, boolean hideExperimentals, boolean ignoreTruncatedChunk)
static EventArray[]	loadStream(java.io.InputStream stream, java.util.List<? extends IParserExtension> extensions, boolean hideExperimentals, boolean ignoreTruncatedChunk)	Read events from an input stream of JFR data.
static java.util.List<ChunkInfo>	readChunkInfo(IChunkSupplier chunkSupplier)
static EventArray[]	readChunks(java.lang.Runnable monitor, java.util.List<? extends IParserExtension> extensions, IChunkSupplier chunkSupplier, boolean hideExperimentals, boolean ignoreTruncatedChunk)
static EventArray[]	readChunks(java.lang.Runnable monitor, IChunkSupplier chunkSupplier, boolean hideExperimentals, boolean ignoreTruncatedChunk)
private static void	sendProgress(java.lang.Runnable listener)

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

private static final java.util.logging.Logger LOGGER

SINGLE_THREADED_PARSER_PROPERTY_KEY

private static final java.lang.String SINGLE_THREADED_PARSER_PROPERTY_KEY

See Also:

Constant Field Values

MIN_MEMORY_PER_THREAD

private static final int MIN_MEMORY_PER_THREAD

See Also:

Constant Field Values

VERSION_0

private static final short VERSION_0

See Also:

Constant Field Values

VERSION_1

private static final short VERSION_1

See Also:

Constant Field Values

VERSION_2

private static final short VERSION_2

See Also:

Constant Field Values

FLIGHT_RECORDER_MAGIC

private static final byte[] FLIGHT_RECORDER_MAGIC

Constructor Detail

FlightRecordingLoader

public FlightRecordingLoader()

Method Detail

loadStream

public static EventArray[] loadStream(java.io.InputStream stream,
                                      boolean hideExperimentals,
                                      boolean ignoreTruncatedChunk)
                               throws CouldNotLoadRecordingException,
                                      java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

loadStream

public static EventArray[] loadStream(java.io.InputStream stream,
                                      java.util.List<? extends IParserExtension> extensions,
                                      boolean hideExperimentals,
                                      boolean ignoreTruncatedChunk)
                               throws CouldNotLoadRecordingException,
                                      java.io.IOException

Read events from an input stream of JFR data.

Parameters:

stream - input stream

extensions - the extensions to use when parsing the data

hideExperimentals - if true, then events of types marked as experimental will be ignored when reading the data

Returns:

an array of EventArrays (one event type per EventArray)

Throws:

CouldNotLoadRecordingException

java.io.IOException

createChunkSupplier

public static IChunkSupplier createChunkSupplier(java.io.InputStream input)
                                          throws CouldNotLoadRecordingException,
                                                 java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

createChunkSupplier

public static IChunkSupplier createChunkSupplier(java.io.RandomAccessFile input)
                                          throws CouldNotLoadRecordingException,
                                                 java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

createChunkSupplier

public static IChunkSupplier createChunkSupplier(java.io.RandomAccessFile input,
                                                 java.util.Collection<ChunkInfo> chunks)
                                          throws CouldNotLoadRecordingException,
                                                 java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

createChunkInput

private static Chunk createChunkInput(java.io.DataInput input,
                                      int firstByte,
                                      byte[] reusableBuffer)
                               throws CouldNotLoadRecordingException,
                                      java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

readChunkInfo

public static java.util.List<ChunkInfo> readChunkInfo(IChunkSupplier chunkSupplier)
                                               throws CouldNotLoadRecordingException,
                                                      java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

getChunkInfo

private static ChunkInfo getChunkInfo(Chunk nextChunk,
                                      long nextChunkPos)
                               throws CouldNotLoadRecordingException,
                                      java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

readChunks

public static EventArray[] readChunks(java.lang.Runnable monitor,
                                      IChunkSupplier chunkSupplier,
                                      boolean hideExperimentals,
                                      boolean ignoreTruncatedChunk)
                               throws CouldNotLoadRecordingException,
                                      java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

readChunks

public static EventArray[] readChunks(java.lang.Runnable monitor,
                                      java.util.List<? extends IParserExtension> extensions,
                                      IChunkSupplier chunkSupplier,
                                      boolean hideExperimentals,
                                      boolean ignoreTruncatedChunk)
                               throws CouldNotLoadRecordingException,
                                      java.io.IOException

Throws:

CouldNotLoadRecordingException

java.io.IOException

sendProgress

private static void sendProgress(java.lang.Runnable listener)

createChunkLoader

private static IChunkLoader createChunkLoader(IChunkSupplier chunkSupplier,
                                              LoaderContext context,
                                              byte[] buffer,
                                              boolean ignoreTruncatedChunk)
                                       throws CouldNotLoadRecordingException,
                                              java.io.IOException

Parameters:

chunkSupplier - chunk data source

context - loader context that the returned chunk loader will send event data to

buffer - Initial byte array to use for storing chunk data. See IChunkSupplier.getNextChunk(byte[]).

ignoreTruncatedChunk - if true, then any exceptions caused by getting and reading the next chunk will be ignored and instead make the method return null

Returns:

a new chunk loader or null if no more data is available from the chunk supplier

Throws:

CouldNotLoadRecordingException

java.io.IOException