public Class MappedByteBufferDataSource

Class Inheritance

extends Object
implements DataSource

java.lang.Object
sun.jvm.hotspot.debugger.MappedByteBufferDataSource

All Implemented Interfaces

sun.jvm.hotspot.debugger.DataSource

Imports

java.io.*, java.nio.*

Implementation of DataSource using MappedByteBuffer. This works around a performance problem in JDK 1.4 where ByteBuffer's operations always become virtual calls rather than being inlined. Need to fix this soon.

Field Summary

Modifier and Type	Field and Description
private MappedByteBuffer	buf

Constructor Summary

Access	Constructor and Description
public	MappedByteBufferDataSource(MappedByteBuffer buf)

Method Summary

Modifier and Type	Method and Description
public void	close() Implements sun.jvm.hotspot.debugger.DataSource.close.
public long	getFilePointer() Implements sun.jvm.hotspot.debugger.DataSource.getFilePointer.
public int	read(byte[] b) Implements sun.jvm.hotspot.debugger.DataSource.read.
public byte	readByte() Implements sun.jvm.hotspot.debugger.DataSource.readByte.
public int	readInt() Implements sun.jvm.hotspot.debugger.DataSource.readInt.
public long	readLong() Implements sun.jvm.hotspot.debugger.DataSource.readLong.
public short	readShort() Implements sun.jvm.hotspot.debugger.DataSource.readShort.
public void	seek(long pos) Implements sun.jvm.hotspot.debugger.DataSource.seek.

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

buf	back to summary
private MappedByteBuffer buf

Constructor Detail

MappedByteBufferDataSource	back to summary
public MappedByteBufferDataSource(MappedByteBuffer buf)

Method Detail

close	back to summary
public void close() throws IOException Implements sun.jvm.hotspot.debugger.DataSource.close.

getFilePointer	back to summary
public long getFilePointer() throws IOException Implements sun.jvm.hotspot.debugger.DataSource.getFilePointer.

read	back to summary
public int read(byte[] b) throws IOException Implements sun.jvm.hotspot.debugger.DataSource.read.

readByte	back to summary
public byte readByte() throws IOException Implements sun.jvm.hotspot.debugger.DataSource.readByte.

readInt	back to summary
public int readInt() throws IOException Implements sun.jvm.hotspot.debugger.DataSource.readInt.

readLong	back to summary
public long readLong() throws IOException Implements sun.jvm.hotspot.debugger.DataSource.readLong.

readShort	back to summary
public short readShort() throws IOException Implements sun.jvm.hotspot.debugger.DataSource.readShort.

seek	back to summary
public void seek(long pos) throws IOException Implements sun.jvm.hotspot.debugger.DataSource.seek.