Package org.apache.druid.segment.data

Class SafeWritableMemory

java.lang.Object

org.apache.druid.segment.data.SafeWritableBase

org.apache.druid.segment.data.SafeWritableMemory

All Implemented Interfaces:

org.apache.datasketches.memory.BaseState, org.apache.datasketches.memory.Memory, org.apache.datasketches.memory.WritableMemory

public class SafeWritableMemory
extends SafeWritableBase
implements org.apache.datasketches.memory.WritableMemory

Safety first! Don't trust something whose contents you locations to read and write stuff to, but need a Memory or WritableMemory? use this!

Delegates everything to an underlying ByteBuffer so all read and write operations will have bounds checks built in rather than using 'unsafe'.

Field Summary

Fields inherited from interface org.apache.datasketches.memory.BaseState

defaultMemReqSvr

Constructor Summary

Constructors

Constructor	Description
SafeWritableMemory(ByteBuffer buffer)

Method Summary

Modifier and Type	Method	Description
org.apache.datasketches.memory.Buffer	asBuffer(ByteOrder byteOrder)
org.apache.datasketches.memory.WritableBuffer	asWritableBuffer(ByteOrder byteOrder)
void	clear()
void	clear(long offsetBytes, long lengthBytes)
void	clearBits(long offsetBytes, byte bitMask)
boolean	compareAndSwapLong(long offsetBytes, long expect, long update)
int	compareTo(long thisOffsetBytes, long thisLengthBytes, org.apache.datasketches.memory.Memory that, long thatOffsetBytes, long thatLengthBytes)
void	copyTo(long srcOffsetBytes, org.apache.datasketches.memory.WritableMemory destination, long dstOffsetBytes, long lengthBytes)
boolean	equalTo(long thisOffsetBytes, Object that, long thatOffsetBytes, long lengthBytes)
void	fill(byte value)
void	fill(long offsetBytes, long lengthBytes, byte value)
long	getAndAddLong(long offsetBytes, long delta)
long	getAndSetLong(long offsetBytes, long newValue)
Object	getArray()
void	getBooleanArray(long offsetBytes, boolean[] dstArray, int dstOffsetBooleans, int lengthBooleans)
void	getByteArray(long offsetBytes, byte[] dstArray, int dstOffsetBytes, int lengthBytes)
void	getCharArray(long offsetBytes, char[] dstArray, int dstOffsetChars, int lengthChars)
int	getCharsFromUtf8(long offsetBytes, int utf8LengthBytes, Appendable dst)
int	getCharsFromUtf8(long offsetBytes, int utf8LengthBytes, StringBuilder dst)
void	getDoubleArray(long offsetBytes, double[] dstArray, int dstOffsetDoubles, int lengthDoubles)
void	getFloatArray(long offsetBytes, float[] dstArray, int dstOffsetFloats, int lengthFloats)
void	getIntArray(long offsetBytes, int[] dstArray, int dstOffsetInts, int lengthInts)
void	getLongArray(long offsetBytes, long[] dstArray, int dstOffsetLongs, int lengthLongs)
void	getShortArray(long offsetBytes, short[] dstArray, int dstOffsetShorts, int lengthShorts)
void	putBooleanArray(long offsetBytes, boolean[] srcArray, int srcOffsetBooleans, int lengthBooleans)
void	putByteArray(long offsetBytes, byte[] srcArray, int srcOffsetBytes, int lengthBytes)
void	putCharArray(long offsetBytes, char[] srcArray, int srcOffsetChars, int lengthChars)
long	putCharsToUtf8(long offsetBytes, CharSequence src)
void	putDoubleArray(long offsetBytes, double[] srcArray, int srcOffsetDoubles, int lengthDoubles)
void	putFloatArray(long offsetBytes, float[] srcArray, int srcOffsetFloats, int lengthFloats)
void	putIntArray(long offsetBytes, int[] srcArray, int srcOffsetInts, int lengthInts)
void	putLongArray(long offsetBytes, long[] srcArray, int srcOffsetLongs, int lengthLongs)
void	putShortArray(long offsetBytes, short[] srcArray, int srcOffsetShorts, int lengthShorts)
org.apache.datasketches.memory.Memory	region(long offsetBytes, long capacityBytes, ByteOrder byteOrder)
void	setBits(long offsetBytes, byte bitMask)
static SafeWritableMemory	wrap(byte[] bytes)
static SafeWritableMemory	wrap(ByteBuffer buffer)
static SafeWritableMemory	wrap(ByteBuffer buffer, int offset, int size)
static SafeWritableMemory	wrap(ByteBuffer buffer, ByteOrder byteOrder)
org.apache.datasketches.memory.WritableMemory	writableRegion(long offsetBytes, long capacityBytes, ByteOrder byteOrder)
void	writeTo(long offsetBytes, long lengthBytes, WritableByteChannel out)

Methods inherited from class org.apache.druid.segment.data.SafeWritableBase

checkValidAndBounds, getBoolean, getByte, getByteBuffer, getCapacity, getChar, getCumulativeOffset, getCumulativeOffset, getDouble, getFloat, getInt, getLong, getMemoryRequestServer, getRegionOffset, getRegionOffset, getShort, getTypeByteOrder, hasArray, hasByteBuffer, isByteOrderCompatible, isDirect, isReadOnly, isSameResource, isValid, putBoolean, putByte, putChar, putDouble, putFloat, putInt, putLong, putShort, toHexString, xxHash64, xxHash64

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.datasketches.memory.BaseState

checkValidAndBounds, equals, getByteBuffer, getCapacity, getCumulativeOffset, getCumulativeOffset, getRegionOffset, getRegionOffset, getTypeByteOrder, hasArray, hasByteBuffer, hashCode, isByteOrderCompatible, isDirect, isReadOnly, isSameResource, isValid, toHexString, xxHash64, xxHash64

Methods inherited from interface org.apache.datasketches.memory.Memory

asBuffer, getBoolean, getByte, getChar, getDouble, getFloat, getInt, getLong, getShort, region

Methods inherited from interface org.apache.datasketches.memory.WritableMemory

asWritableBuffer, getMemoryRequestServer, putBoolean, putByte, putChar, putDouble, putFloat, putInt, putLong, putShort, writableRegion

Constructor Detail

SafeWritableMemory

public SafeWritableMemory(ByteBuffer buffer)

Method Detail

wrap

public static SafeWritableMemory wrap(byte[] bytes)

wrap

public static SafeWritableMemory wrap(ByteBuffer buffer)

wrap

public static SafeWritableMemory wrap(ByteBuffer buffer,
                                      ByteOrder byteOrder)

wrap

public static SafeWritableMemory wrap(ByteBuffer buffer,
                                      int offset,
                                      int size)

region

public org.apache.datasketches.memory.Memory region(long offsetBytes,
                                                    long capacityBytes,
                                                    ByteOrder byteOrder)

Specified by:

region in interface org.apache.datasketches.memory.Memory

asBuffer

public org.apache.datasketches.memory.Buffer asBuffer(ByteOrder byteOrder)

Specified by:

asBuffer in interface org.apache.datasketches.memory.Memory

getBooleanArray

public void getBooleanArray(long offsetBytes,
                            boolean[] dstArray,
                            int dstOffsetBooleans,
                            int lengthBooleans)

Specified by:

getBooleanArray in interface org.apache.datasketches.memory.Memory

getByteArray

public void getByteArray(long offsetBytes,
                         byte[] dstArray,
                         int dstOffsetBytes,
                         int lengthBytes)

Specified by:

getByteArray in interface org.apache.datasketches.memory.Memory

getCharArray

public void getCharArray(long offsetBytes,
                         char[] dstArray,
                         int dstOffsetChars,
                         int lengthChars)

Specified by:

getCharArray in interface org.apache.datasketches.memory.Memory

getCharsFromUtf8

public int getCharsFromUtf8(long offsetBytes,
                            int utf8LengthBytes,
                            Appendable dst)
                     throws IOException,
                            org.apache.datasketches.memory.Utf8CodingException

Specified by:

getCharsFromUtf8 in interface org.apache.datasketches.memory.Memory

Throws:

IOException

org.apache.datasketches.memory.Utf8CodingException

getCharsFromUtf8

public int getCharsFromUtf8(long offsetBytes,
                            int utf8LengthBytes,
                            StringBuilder dst)
                     throws org.apache.datasketches.memory.Utf8CodingException

Specified by:

getCharsFromUtf8 in interface org.apache.datasketches.memory.Memory

Throws:

org.apache.datasketches.memory.Utf8CodingException

getDoubleArray

public void getDoubleArray(long offsetBytes,
                           double[] dstArray,
                           int dstOffsetDoubles,
                           int lengthDoubles)

Specified by:

getDoubleArray in interface org.apache.datasketches.memory.Memory

getFloatArray

public void getFloatArray(long offsetBytes,
                          float[] dstArray,
                          int dstOffsetFloats,
                          int lengthFloats)

Specified by:

getFloatArray in interface org.apache.datasketches.memory.Memory

getIntArray

public void getIntArray(long offsetBytes,
                        int[] dstArray,
                        int dstOffsetInts,
                        int lengthInts)

Specified by:

getIntArray in interface org.apache.datasketches.memory.Memory

getLongArray

public void getLongArray(long offsetBytes,
                         long[] dstArray,
                         int dstOffsetLongs,
                         int lengthLongs)

Specified by:

getLongArray in interface org.apache.datasketches.memory.Memory

getShortArray

public void getShortArray(long offsetBytes,
                          short[] dstArray,
                          int dstOffsetShorts,
                          int lengthShorts)

Specified by:

getShortArray in interface org.apache.datasketches.memory.Memory

compareTo

public int compareTo(long thisOffsetBytes,
                     long thisLengthBytes,
                     org.apache.datasketches.memory.Memory that,
                     long thatOffsetBytes,
                     long thatLengthBytes)

Specified by:

compareTo in interface org.apache.datasketches.memory.Memory

copyTo

public void copyTo(long srcOffsetBytes,
                   org.apache.datasketches.memory.WritableMemory destination,
                   long dstOffsetBytes,
                   long lengthBytes)

Specified by:

copyTo in interface org.apache.datasketches.memory.Memory

writeTo

public void writeTo(long offsetBytes,
                    long lengthBytes,
                    WritableByteChannel out)
             throws IOException

Specified by:

writeTo in interface org.apache.datasketches.memory.Memory

Throws:

IOException

equalTo

public boolean equalTo(long thisOffsetBytes,
                       Object that,
                       long thatOffsetBytes,
                       long lengthBytes)

Specified by:

equalTo in interface org.apache.datasketches.memory.BaseState

writableRegion

public org.apache.datasketches.memory.WritableMemory writableRegion(long offsetBytes,
                                                                    long capacityBytes,
                                                                    ByteOrder byteOrder)

Specified by:

writableRegion in interface org.apache.datasketches.memory.WritableMemory

asWritableBuffer

public org.apache.datasketches.memory.WritableBuffer asWritableBuffer(ByteOrder byteOrder)

Specified by:

asWritableBuffer in interface org.apache.datasketches.memory.WritableMemory

putBooleanArray

public void putBooleanArray(long offsetBytes,
                            boolean[] srcArray,
                            int srcOffsetBooleans,
                            int lengthBooleans)

Specified by:

putBooleanArray in interface org.apache.datasketches.memory.WritableMemory

putByteArray

public void putByteArray(long offsetBytes,
                         byte[] srcArray,
                         int srcOffsetBytes,
                         int lengthBytes)

Specified by:

putByteArray in interface org.apache.datasketches.memory.WritableMemory

putCharArray

public void putCharArray(long offsetBytes,
                         char[] srcArray,
                         int srcOffsetChars,
                         int lengthChars)

Specified by:

putCharArray in interface org.apache.datasketches.memory.WritableMemory

putCharsToUtf8

public long putCharsToUtf8(long offsetBytes,
                           CharSequence src)

Specified by:

putCharsToUtf8 in interface org.apache.datasketches.memory.WritableMemory

putDoubleArray

public void putDoubleArray(long offsetBytes,
                           double[] srcArray,
                           int srcOffsetDoubles,
                           int lengthDoubles)

Specified by:

putDoubleArray in interface org.apache.datasketches.memory.WritableMemory

putFloatArray

public void putFloatArray(long offsetBytes,
                          float[] srcArray,
                          int srcOffsetFloats,
                          int lengthFloats)

Specified by:

putFloatArray in interface org.apache.datasketches.memory.WritableMemory

putIntArray

public void putIntArray(long offsetBytes,
                        int[] srcArray,
                        int srcOffsetInts,
                        int lengthInts)

Specified by:

putIntArray in interface org.apache.datasketches.memory.WritableMemory

putLongArray

public void putLongArray(long offsetBytes,
                         long[] srcArray,
                         int srcOffsetLongs,
                         int lengthLongs)

Specified by:

putLongArray in interface org.apache.datasketches.memory.WritableMemory

putShortArray

public void putShortArray(long offsetBytes,
                          short[] srcArray,
                          int srcOffsetShorts,
                          int lengthShorts)

Specified by:

putShortArray in interface org.apache.datasketches.memory.WritableMemory

getAndAddLong

public long getAndAddLong(long offsetBytes,
                          long delta)

Specified by:

getAndAddLong in interface org.apache.datasketches.memory.WritableMemory

compareAndSwapLong

public boolean compareAndSwapLong(long offsetBytes,
                                  long expect,
                                  long update)

Specified by:

compareAndSwapLong in interface org.apache.datasketches.memory.WritableMemory

getAndSetLong

public long getAndSetLong(long offsetBytes,
                          long newValue)

Specified by:

getAndSetLong in interface org.apache.datasketches.memory.WritableMemory

getArray

public Object getArray()

Specified by:

getArray in interface org.apache.datasketches.memory.WritableMemory

clear

public void clear()

Specified by:

clear in interface org.apache.datasketches.memory.WritableMemory

clear

public void clear(long offsetBytes,
                  long lengthBytes)

Specified by:

clear in interface org.apache.datasketches.memory.WritableMemory

clearBits

public void clearBits(long offsetBytes,
                      byte bitMask)

Specified by:

clearBits in interface org.apache.datasketches.memory.WritableMemory

fill

public void fill(byte value)

Specified by:

fill in interface org.apache.datasketches.memory.WritableMemory

fill

public void fill(long offsetBytes,
                 long lengthBytes,
                 byte value)

Specified by:

fill in interface org.apache.datasketches.memory.WritableMemory

setBits

public void setBits(long offsetBytes,
                    byte bitMask)

Specified by:

setBits in interface org.apache.datasketches.memory.WritableMemory