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/*-
*
* * Copyright 2015 Skymind,Inc.
* *
* * Licensed under the Apache License, Version 2.0 (the "License");
* * you may not use this file except in compliance with the License.
* * You may obtain a copy of the License at
* *
* * http://www.apache.org/licenses/LICENSE-2.0
* *
* * Unless required by applicable law or agreed to in writing, software
* * distributed under the License is distributed on an "AS IS" BASIS,
* * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* * See the License for the specific language governing permissions and
* * limitations under the License.
*
*
*/
package org.nd4j.linalg.api.buffer;
import org.bytedeco.javacpp.*;
import org.bytedeco.javacpp.indexer.*;
import org.nd4j.linalg.api.buffer.util.AllocUtil;
import org.nd4j.linalg.api.buffer.util.DataTypeUtil;
import org.nd4j.linalg.api.complex.IComplexDouble;
import org.nd4j.linalg.api.complex.IComplexFloat;
import org.nd4j.linalg.api.complex.IComplexNumber;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import java.io.*;
import java.nio.ByteBuffer;
import java.nio.DoubleBuffer;
import java.nio.FloatBuffer;
import java.nio.IntBuffer;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.concurrent.atomic.AtomicBoolean;
/**
* Base class for a data buffer
* handling basic byte operations
* among other things.
*
* @author Adam Gibson
*/
public abstract class BaseDataBuffer implements DataBuffer {
protected Type type;
protected Type globalType = DataTypeUtil.getDtypeFromContext();
protected long length;
protected long underlyingLength;
protected long offset;
protected int elementSize;
protected transient ByteBuffer wrappedBuffer;
protected transient DataBuffer wrappedDataBuffer;
protected Collection referencing = Collections.synchronizedSet(new HashSet());
protected boolean isPersist = false;
protected AllocationMode allocationMode;
protected transient Pointer pointer;
protected transient Indexer indexer;
protected AtomicBoolean dirty = new AtomicBoolean(false);
// Allocator-related stuff. Moved down here to avoid type casting.
protected transient DataBuffer originalBuffer;
protected transient long originalOffset = 0;
protected transient Long trackingPoint;
protected transient boolean constant = false;
private static Logger log = LoggerFactory.getLogger(BaseDataBuffer.class);
public BaseDataBuffer() {}
/**
* Initialize the type of this buffer
*/
protected abstract void initTypeAndSize();
@Override
public int getElementSize() {
return elementSize;
}
/**
*
* Meant for creating another view of a buffer
* @param pointer the underlying buffer to create a view from
* @param indexer the indexer for the pointer
* @param length the length of the view
*/
public BaseDataBuffer(Pointer pointer, Indexer indexer, long length) {
if (length < 1)
throw new IllegalArgumentException("Length must be >= 1");
initTypeAndSize();
this.length = length;
this.allocationMode = AllocationMode.JAVACPP;
this.underlyingLength = length;
this.wrappedDataBuffer = this;
this.pointer = pointer;
this.indexer = indexer;
}
/**
*
* Meant for creating another view of a buffer
* @param underlyingBuffer the underlying buffer to create a view from
* @param length the length of the view
* @param offset the offset for the view
*/
protected BaseDataBuffer(DataBuffer underlyingBuffer, long length, long offset) {
if (length < 1)
throw new IllegalArgumentException("Length must be >= 1");
initTypeAndSize();
this.length = length;
this.offset = offset;
this.allocationMode = underlyingBuffer.allocationMode();
this.elementSize = underlyingBuffer.getElementSize();
this.underlyingLength = underlyingBuffer.underlyingLength();
this.wrappedDataBuffer = underlyingBuffer;
// Adding link to original databuffer
if (underlyingBuffer.originalDataBuffer() == null) {
this.originalBuffer = underlyingBuffer;
this.originalOffset = offset;
} else {
this.originalBuffer = underlyingBuffer.originalDataBuffer();
// FIXME: please don't remove this comment, since there's probably a bug in current offset() impl,
// and this line will change originalOffset accroding to proper offset() impl
// FIXME: [email protected]
this.originalOffset = offset; // + underlyingBuffer.originalOffset();
}
pointer = underlyingBuffer.pointer();
indexer = underlyingBuffer.indexer();
}
/**
* Original DataBuffer.
* In case if we have a view derived from another view, derived from some other view, original DataBuffer will point to the originating DataBuffer, where all views come from.
*/
@Override
public DataBuffer originalDataBuffer() {
return originalBuffer;
}
/**
*
* @param data
* @param copy
*/
public BaseDataBuffer(float[] data, boolean copy, int offset) {
this(data, copy);
this.offset = offset;
this.originalOffset = offset;
this.length = data.length - offset;
this.underlyingLength = data.length;
}
/**
*
* @param data
* @param copy
*/
public BaseDataBuffer(float[] data, boolean copy) {
allocationMode = AllocUtil.getAllocationModeFromContext();
initTypeAndSize();
pointer = new FloatPointer(data);
indexer = FloatIndexer.create((FloatPointer) pointer);
wrappedBuffer = pointer.asByteBuffer();
length = data.length;
underlyingLength = data.length;
}
/**
*
* @param data
* @param copy
*/
public BaseDataBuffer(double[] data, boolean copy, int offset) {
this(data, copy);
this.offset = offset;
this.originalOffset = offset;
this.underlyingLength = data.length;
this.length = underlyingLength - offset;
}
/**
*
* @param data
* @param copy
*/
public BaseDataBuffer(double[] data, boolean copy) {
allocationMode = AllocUtil.getAllocationModeFromContext();
initTypeAndSize();
pointer = new DoublePointer(data);
indexer = DoubleIndexer.create((DoublePointer) pointer);
wrappedBuffer = pointer.asByteBuffer();
length = data.length;
underlyingLength = data.length;
}
/**
*
* @param data
* @param copy
*/
public BaseDataBuffer(int[] data, boolean copy, int offset) {
this(data, copy);
this.offset = offset;
this.originalOffset = offset;
this.length = data.length - offset;
this.underlyingLength = data.length;
}
/**
*
* @param data
* @param copy
*/
public BaseDataBuffer(int[] data, boolean copy) {
allocationMode = AllocUtil.getAllocationModeFromContext();
initTypeAndSize();
pointer = new IntPointer(data);
indexer = IntIndexer.create((IntPointer) pointer);
wrappedBuffer = pointer.asByteBuffer();
length = data.length;
underlyingLength = data.length;
}
/**
*
* @param data
*/
public BaseDataBuffer(double[] data) {
this(data, true);
}
/**
*
* @param data
*/
public BaseDataBuffer(int[] data) {
this(data, true);
}
/**
*
* @param data
*/
public BaseDataBuffer(float[] data) {
this(data, true);
}
/**
*
* @param length
* @param elementSize
*/
public BaseDataBuffer(int length, int elementSize, int offset) {
this(length, elementSize);
this.offset = offset;
this.originalOffset = offset;
this.length = length - offset;
this.underlyingLength = length;
}
/**
*
* @param length
* @param elementSize
*/
public BaseDataBuffer(long length, int elementSize) {
if (length < 1)
throw new IllegalArgumentException("Length must be >= 1");
initTypeAndSize();
allocationMode = AllocUtil.getAllocationModeFromContext();
this.length = length;
this.underlyingLength = length;
this.elementSize = elementSize;
if (dataType() == Type.DOUBLE) {
pointer = new DoublePointer(length);
indexer = DoubleIndexer.create((DoublePointer) pointer);
} else if (dataType() == Type.FLOAT) {
pointer = new FloatPointer(length);
indexer = FloatIndexer.create((FloatPointer) pointer);
} else if (dataType() == Type.INT) {
pointer = new IntPointer(length);
indexer = IntIndexer.create((IntPointer) pointer);
}
}
/**
* Create a data buffer from
* the given length
*
* @param buffer
* @param length
*/
public BaseDataBuffer(ByteBuffer buffer, long length, int offset) {
this(buffer, length);
this.offset = offset;
this.originalOffset = offset;
this.underlyingLength = length;
this.length = length - offset;
}
/**
* Create a data buffer from
* the given length
*
* @param buffer
* @param length
*/
public BaseDataBuffer(ByteBuffer buffer, long length) {
if (length < 1)
throw new IllegalArgumentException("Length must be >= 1");
initTypeAndSize();
this.length = length;
allocationMode = AllocUtil.getAllocationModeFromContext();
if (dataType() == Type.DOUBLE) {
pointer = new DoublePointer(buffer.asDoubleBuffer());
indexer = DoubleIndexer.create((DoublePointer) pointer);
} else if (dataType() == Type.FLOAT) {
pointer = new FloatPointer(buffer.asFloatBuffer());
indexer = FloatIndexer.create((FloatPointer) pointer);
} else if (dataType() == Type.INT) {
pointer = new IntPointer(buffer.asIntBuffer());
indexer = IntIndexer.create((IntPointer) pointer);
}
}
//sets the nio wrapped buffer (allows to be overridden for other use cases like cuda)
protected void setNioBuffer() {
if (elementSize * length >= Integer.MAX_VALUE)
throw new IllegalArgumentException("Unable to create buffer of length " + length);
wrappedBuffer = pointer.asByteBuffer();
}
/**
*
* @param data
* @param length
*/
public BaseDataBuffer(byte[] data, long length) {
this(ByteBuffer.wrap(data), length);
}
/**
* Returns the indexer for the buffer
*
* @return
*/
@Override
public Indexer indexer() {
return indexer;
}
@Override
public Pointer pointer() {
return pointer;
}
@Override
public DataBuffer underlyingDataBuffer() {
return wrappedDataBuffer;
}
@Override
public long offset() {
return offset;
}
@Override
public AllocationMode allocationMode() {
return allocationMode;
}
@Override
public void persist() {
isPersist = true;
}
@Override
public boolean isPersist() {
return isPersist;
}
@Override
public void unPersist() {
isPersist = false;
}
private void fillPointerWithZero() {
Pointer.memset(this.pointer(), 0, getElementSize() * length());
}
/**
* Instantiate a buffer with the given length
*
* @param length the length of the buffer
*/
protected BaseDataBuffer(long length) {
this(length, true);
}
protected BaseDataBuffer(long length, boolean initialize) {
if (length < 1)
throw new IllegalArgumentException("Length must be >= 1");
initTypeAndSize();
this.length = length;
this.underlyingLength = length;
allocationMode = AllocUtil.getAllocationModeFromContext();
if (length < 0)
throw new IllegalArgumentException("Unable to create a buffer of length <= 0");
if (dataType() == Type.DOUBLE) {
pointer = new DoublePointer(length());
indexer = DoubleIndexer.create((DoublePointer) pointer);
if (initialize)
fillPointerWithZero();
} else if (dataType() == Type.FLOAT) {
pointer = new FloatPointer(length());
indexer = FloatIndexer.create((FloatPointer) pointer);
if (initialize)
fillPointerWithZero();
} else if (dataType() == Type.INT) {
pointer = new IntPointer(length());
indexer = IntIndexer.create((IntPointer) pointer);
if (initialize)
fillPointerWithZero();
}
}
@Override
public void copyAtStride(DataBuffer buf, long n, long stride, long yStride, long offset, long yOffset) {
if (dataType() == Type.FLOAT) {
for (int i = 0; i < n; i++) {
put(offset + i * stride, buf.getFloat(yOffset + i * yStride));
}
} else {
for (int i = 0; i < n; i++) {
put(offset + i * stride, buf.getDouble(yOffset + i * yStride));
}
}
}
@Override
public void removeReferencing(String id) {
referencing.remove(id);
}
@Override
public Collection references() {
return referencing;
}
@Override
public Pointer addressPointer() {
if (offset() > 0) {
if (dataType() == Type.DOUBLE) {
return new DoublePointer(pointer) {
{
address = pointer.address() + getElementSize() * offset();
}
};
} else if (dataType() == Type.FLOAT) {
return new FloatPointer(pointer) {
{
address = pointer.address() + getElementSize() * offset();
}
};
} else if (dataType() == Type.INT) {
return new IntPointer(pointer) {
{
address = pointer.address() + getElementSize() * offset();
}
};
}
}
return pointer;
}
@Override
public long address() {
return pointer.address() + getElementSize() * offset();
}
@Override
public void addReferencing(String id) {
referencing.add(id);
}
@Override
public void assign(long[] indices, float[] data, boolean contiguous, long inc) {
if (indices.length != data.length)
throw new IllegalArgumentException("Indices and data length must be the same");
if (indices.length > length())
throw new IllegalArgumentException("More elements than space to assign. This buffer is of length "
+ length() + " where the indices are of length " + data.length);
for (int i = 0; i < indices.length; i++) {
put(indices[i], data[i]);
}
}
@Override
public void setData(int[] data) {
for (int i = 0; i < data.length; i++) {
put(i, data[i]);
}
}
@Override
public void setData(float[] data) {
for (int i = 0; i < data.length; i++) {
put(i, data[i]);
}
}
@Override
public void setData(double[] data) {
for (int i = 0; i < data.length; i++) {
put(i, data[i]);
}
}
@Override
public void assign(long[] indices, double[] data, boolean contiguous, long inc) {
if (indices.length != data.length)
throw new IllegalArgumentException("Indices and data length must be the same");
if (indices.length > length())
throw new IllegalArgumentException("More elements than space to assign. This buffer is of length "
+ length() + " where the indices are of length " + data.length);
for (int i = 0; i < indices.length; i += inc) {
put(indices[i], data[i]);
}
}
@Override
public void assign(DataBuffer data) {
if (data.length() != length())
throw new IllegalArgumentException("Unable to assign buffer of length " + data.length()
+ " to this buffer of length " + length());
for (int i = 0; i < data.length(); i++) {
put(i, data.getDouble(i));
}
}
@Override
public void assign(long[] indices, float[] data, boolean contiguous) {
assign(indices, data, contiguous, 1);
}
@Override
public void assign(long[] indices, double[] data, boolean contiguous) {
assign(indices, data, contiguous, 1);
}
@Override
public long underlyingLength() {
return underlyingLength;
}
@Override
public long length() {
return length;
}
@Override
public void assign(Number value) {
for (int i = 0; i < length(); i++)
assign(value, i);
}
@Override
public double[] getDoublesAt(long offset, int length) {
return getDoublesAt(offset, 1, length);
}
@Override
public float[] getFloatsAt(long offset, long inc, int length) {
if (offset + length > length())
length -= offset;
float[] ret = new float[length];
for (int i = 0; i < length; i++) {
ret[i] = getFloat(i + offset);
}
return ret;
}
@Override
public DataBuffer dup() {
DataBuffer ret = create(length);
for (int i = 0; i < ret.length(); i++)
ret.put(i, getDouble(i));
return ret;
}
/**
* Create with length
* @param length a databuffer of the same type as
* this with the given length
* @return a data buffer with the same length and datatype as this one
*/
protected abstract DataBuffer create(long length);
/**
* Create the data buffer
* with respect to the given byte buffer
* @param data the buffer to create
* @return the data buffer based on the given buffer
*/
public abstract DataBuffer create(double[] data);
/**
* Create the data buffer
* with respect to the given byte buffer
* @param data the buffer to create
* @return the data buffer based on the given buffer
*/
public abstract DataBuffer create(float[] data);
/**
* Create the data buffer
* with respect to the given byte buffer
* @param data the buffer to create
* @return the data buffer based on the given buffer
*/
public abstract DataBuffer create(int[] data);
@Override
public double[] getDoublesAt(long offset, long inc, int length) {
if (offset + length > length())
length -= offset;
double[] ret = new double[length];
for (int i = 0; i < length; i++) {
ret[i] = getDouble(i + offset);
}
return ret;
}
@Override
public float[] getFloatsAt(long offset, int length) {
return getFloatsAt(offset, 1, length);
}
@Override
public abstract IComplexFloat getComplexFloat(long i);
@Override
public abstract IComplexDouble getComplexDouble(long i);
@Override
public IComplexNumber getComplex(long i) {
return dataType() == Type.FLOAT ? getComplexFloat(i) : getComplexDouble(i);
}
@Override
public void put(long i, IComplexNumber result) {
put(i, result.realComponent().doubleValue());
put(i + 1, result.imaginaryComponent().doubleValue());
}
@Override
public void assign(long[] offsets, long[] strides, DataBuffer... buffers) {
assign(offsets, strides, length(), buffers);
}
@Override
public byte[] asBytes() {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(bos);
if (dataType() == Type.DOUBLE) {
for (int i = 0; i < length(); i++) {
try {
dos.writeDouble(getDouble(i));
} catch (IOException e) {
e.printStackTrace();
}
}
} else {
for (int i = 0; i < length(); i++) {
try {
dos.writeFloat(getFloat(i));
} catch (IOException e) {
e.printStackTrace();
}
}
}
return bos.toByteArray();
}
@Override
public float[] asFloat() {
if (length >= Integer.MAX_VALUE)
throw new IllegalArgumentException("Unable to create array of length " + length);
float[] ret = new float[(int) length];
for (int i = 0; i < length; i++)
ret[i] = getFloat(i);
return ret;
}
@Override
public double[] asDouble() {
if (length >= Integer.MAX_VALUE)
throw new IllegalArgumentException("Unable to create array of length " + length);
double[] ret = new double[(int) length];
for (int i = 0; i < length; i++)
ret[i] = getDouble(i);
return ret;
}
@Override
public int[] asInt() {
if (length >= Integer.MAX_VALUE)
throw new IllegalArgumentException("Unable to create array of length " + length);
int[] ret = new int[(int) length];
for (int i = 0; i < length; i++)
ret[i] = getInt(i);
return ret;
}
@Override
public double getDouble(long i) {
if (dataType() == Type.FLOAT) {
dirty.set(false);
if (indexer instanceof FloatIndexer) {
return ((FloatIndexer) indexer).get(offset() + i);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return (double) other.get(offset() + i);
}
} else if (dataType() == Type.INT) {
dirty.set(false);
if (indexer instanceof IntIndexer) {
return ((IntIndexer) indexer).get(offset() + i);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return (double) other.get(offset() + i);
}
} else {
dirty.set(false);
if (indexer instanceof DoubleIndexer) {
return ((DoubleIndexer) indexer).get(offset() + i);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return (double) other.get(offset() + i);
}
}
}
/**
* Special method for
* @param i
* @return
*/
protected short getShort(long i) {
if (dataType() != Type.HALF)
throw new UnsupportedOperationException("getShort() is supported for Half-precision buffers only");
return fromFloat(((HalfIndexer) indexer).get(offset() + i));
}
public static short fromFloat(float v) {
if (Float.isNaN(v))
return (short) 0x7fff;
if (v == Float.POSITIVE_INFINITY)
return (short) 0x7c00;
if (v == Float.NEGATIVE_INFINITY)
return (short) 0xfc00;
if (v == 0.0f)
return (short) 0x0000;
if (v == -0.0f)
return (short) 0x8000;
if (v > 65504.0f)
return 0x7bff; // max value supported by half float
if (v < -65504.0f)
return (short) (0x7bff | 0x8000);
if (v > 0.0f && v < 5.96046E-8f)
return 0x0001;
if (v < 0.0f && v > -5.96046E-8f)
return (short) 0x8001;
final int f = Float.floatToIntBits(v);
return (short) (((f >> 16) & 0x8000) | ((((f & 0x7f800000) - 0x38000000) >> 13) & 0x7c00)
| ((f >> 13) & 0x03ff));
}
@Override
public float getFloat(long i) {
if (dataType() == Type.DOUBLE) {
dirty.set(false);
if (indexer instanceof DoubleIndexer)
return (float) ((DoubleIndexer) indexer).get(offset() + i);
else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return (float) other.get(offset() + i);
}
} else if (dataType() == Type.INT) {
dirty.set(false);
if (indexer instanceof IntIndexer) {
return ((IntIndexer) indexer).get(offset() + i);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return (float) other.get(offset() + i);
}
} else if (dataType() == Type.HALF) {
dirty.set(false);
if (indexer instanceof HalfIndexer) {
return ((HalfIndexer) indexer).get(offset() + i);
}
throw new RuntimeException("Unsupported indexer was used for Half-precision buffer");
} else {
dirty.set(false);
if (indexer instanceof FloatIndexer) {
return ((FloatIndexer) indexer).get(offset() + i);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return (float) other.get(offset() + i);
}
}
}
@Override
public int getInt(long i) {
if (dataType() == Type.DOUBLE) {
dirty.set(false);
if (indexer instanceof DoubleIndexer) {
return (int) ((DoubleIndexer) indexer).get(offset() + i);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return other.get(offset() + i);
}
} else if (dataType() == Type.INT) {
dirty.set(false);
if (indexer instanceof IntIndexer) {
return ((IntIndexer) indexer).get(offset() + i);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return other.get(offset() + i);
}
} else {
if (indexer instanceof FloatIndexer) {
return (int) ((FloatIndexer) indexer).get(offset() + i);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
return other.get(offset() + i);
}
}
}
@Override
public Number getNumber(long i) {
if (dataType() == Type.DOUBLE)
return getDouble(i);
else if (dataType() == Type.INT)
return getInt(i);
return getFloat(i);
}
public void pointerIndexerByGlobalType(Type currentType) {
if (currentType == Type.INT) {
pointer = new IntPointer(length());
indexer = IntIndexer.create((IntPointer) pointer);
type = Type.INT;
} else {
if (globalType == Type.DOUBLE) {
pointer = new DoublePointer(length());
indexer = DoubleIndexer.create((DoublePointer) pointer);
} else if (globalType == Type.FLOAT) {
pointer = new FloatPointer(length());
indexer = FloatIndexer.create((FloatPointer) pointer);
}
}
}
public void putByGlobalType(long i, Number element) {
if (globalType == Type.INT || type == Type.INT) {
int anElement = element.intValue();
put(i, anElement);
} else if (globalType == Type.FLOAT || globalType == Type.HALF) {
float anElement = element.floatValue();
put(i, anElement);
} else if (globalType == Type.DOUBLE) {
double anElement = element.doubleValue();
put(i, anElement);
}
}
@Override
public void put(long i, float element) {
if (dataType() == Type.DOUBLE) {
if (indexer instanceof DoubleIndexer) {
((DoubleIndexer) indexer).put(offset() + i, element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, (int) element);
}
} else if (dataType() == Type.INT) {
if (indexer instanceof IntIndexer) {
((IntIndexer) indexer).put(offset() + i, (int) element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, (int) element);
}
} else {
if (indexer instanceof FloatIndexer) {
((FloatIndexer) indexer).put(offset() + i, element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, (int) element);
}
}
dirty.set(true);
}
@Override
public void put(long i, double element) {
if (dataType() == Type.DOUBLE) {
if (indexer instanceof DoubleIndexer) {
((DoubleIndexer) indexer).put(offset() + i, element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, (int) element);
}
} else if (dataType() == Type.INT) {
if (indexer instanceof IntIndexer) {
((IntIndexer) indexer).put(offset() + i, (int) element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, (int) element);
}
} else if (dataType() == Type.HALF) {
if (indexer instanceof HalfIndexer) {
((HalfIndexer) indexer).put(offset() + i, (float) element);
}
} else {
if (indexer instanceof FloatIndexer) {
((FloatIndexer) indexer).put(offset() + i, (float) element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, (int) element);
}
}
dirty.set(true);
}
@Override
public void put(long i, int element) {
if (dataType() == Type.DOUBLE) {
if (indexer instanceof DoubleIndexer) {
((DoubleIndexer) indexer).put(offset() + i, element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, element);
}
} else if (dataType() == Type.INT) {
if (indexer instanceof IntIndexer) {
((IntIndexer) indexer).put(offset() + i, element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, element);
}
} else {
if (indexer instanceof FloatIndexer) {
((FloatIndexer) indexer).put(offset() + i, element);
} else {
UByteRawIndexer other = (UByteRawIndexer) indexer;
other.put(offset() + i, element);
}
}
dirty.set(true);
}
@Override
public boolean dirty() {
return dirty.get();
}
@Override
public boolean sameUnderlyingData(DataBuffer buffer) {
return pointer() == buffer.pointer();
}
@Override
public IntBuffer asNioInt() {
if (offset() >= Integer.MAX_VALUE)
throw new IllegalStateException("Index out of bounds " + offset());
if (wrappedBuffer == null) {
return pointer.asByteBuffer().asIntBuffer();
} else if (offset() == 0) {
return wrappedBuffer.asIntBuffer();
} else
return (IntBuffer) wrappedBuffer.asIntBuffer().position((int) offset());
}
@Override
public DoubleBuffer asNioDouble() {
if (offset() >= Integer.MAX_VALUE)
throw new IllegalStateException("Index out of bounds " + offset());
if (wrappedBuffer == null) {
return pointer.asByteBuffer().asDoubleBuffer();
} else if (offset() == 0) {
return wrappedBuffer.asDoubleBuffer();
} else {
return (DoubleBuffer) wrappedBuffer.asDoubleBuffer().position((int) (offset()));
}
}
@Override
public FloatBuffer asNioFloat() {
if (offset() >= Integer.MAX_VALUE)
throw new IllegalStateException("Index out of bounds " + offset());
if (wrappedBuffer == null) {
return pointer.asByteBuffer().asFloatBuffer();
} else if (offset() == 0) {
return wrappedBuffer.asFloatBuffer();
} else {
return (FloatBuffer) wrappedBuffer.asFloatBuffer().position((int) (offset()));
}
}
@Override
public ByteBuffer asNio() {
if (wrappedBuffer == null) {
return pointer.asByteBuffer();
} else {
return wrappedBuffer;
}
}
@Override
public void assign(Number value, long offset) {
//note here that the final put will take care of the offset
for (long i = offset; i < length(); i++)
put(i, value.doubleValue());
}
@Override
public void write(OutputStream dos) {
if (dos instanceof DataOutputStream) {
try {
write((DataOutputStream) dos);
} catch (IOException e) {
throw new IllegalStateException("IO Exception writing buffer", e);
}
} else {
DataOutputStream dos2 = new DataOutputStream(dos);
try {
write(dos2);
} catch (IOException e) {
throw new IllegalStateException("IO Exception writing buffer", e);
}
}
}
@Override
public void read(InputStream is) {
if (is instanceof DataInputStream) {
read((DataInputStream) is);
}
else {
DataInputStream dis2 = new DataInputStream(is);
read(dis2);
}
}
@Override
public void flush() {
}
@Override
public void assign(long[] offsets, long[] strides, long n, DataBuffer... buffers) {
if (offsets.length != strides.length || strides.length != buffers.length)
throw new IllegalArgumentException(
"Unable to assign buffers, please specify equal lengths strides, offsets, and buffers");
int count = 0;
for (int i = 0; i < buffers.length; i++) {
//note here that the final put will take care of the offset
for (long j = offsets[i]; j < buffers[i].length(); j += strides[i]) {
put(count++, buffers[i].getDouble(j));
}
}
if (count != n)
throw new IllegalArgumentException("Strides and offsets didn't match up to length " + n);
}
@Override
public void assign(DataBuffer... buffers) {
long[] offsets = new long[buffers.length];
long[] strides = new long[buffers.length];
for (int i = 0; i < strides.length; i++)
strides[i] = 1;
assign(offsets, strides, buffers);
}
@Override
public void destroy() {
}
/**
* The data type of the buffer
*
* @return the data type of the buffer
*/
@Override
public Type dataType() {
return type;
}
@Override
public boolean equals(Object o) {
// FIXME: this is BAD. it takes too long to work, and it breaks general equals contract
if (o instanceof DataBuffer) {
DataBuffer d = (DataBuffer) o;
if (d.length() != length())
return false;
for (int i = 0; i < length(); i++) {
double eps = Math.abs(getDouble(i) - d.getDouble(i));
if (eps > 1e-12)
return false;
}
}
return true;
}
private void readObject(ObjectInputStream s) {
doReadObject(s);
}
private void writeObject(ObjectOutputStream out) throws IOException {
out.defaultWriteObject();
write(out);
}
protected void doReadObject(ObjectInputStream s) {
try {
s.defaultReadObject();
read(s);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public void read(DataInputStream s) {
try {
referencing = Collections.synchronizedSet(new HashSet());
dirty = new AtomicBoolean(false);
allocationMode = AllocationMode.valueOf(s.readUTF());
length = s.readInt();
Type currentType = Type.valueOf(s.readUTF());
if (currentType != Type.COMPRESSED)
type = globalType;
else
type = currentType;
if (globalType == Type.DOUBLE && currentType != Type.INT)
elementSize = 8;
else if (globalType == Type.FLOAT || currentType == Type.INT)
elementSize = 4;
else if (globalType == Type.HALF && currentType != Type.INT)
elementSize = 2;
if (currentType != globalType && currentType != Type.HALF && currentType != Type.INT
&& !(globalType == Type.DOUBLE)) {
log.warn("Loading a data stream with type different from what is set globally. Expect precision loss");
if (globalType == Type.INT)
log.warn("Int to float/double widening UNSUPPORTED!!!");
}
pointerIndexerByGlobalType(currentType);
if (currentType != Type.COMPRESSED)
readContent(s, currentType);
wrappedBuffer = pointer.asByteBuffer();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
protected void readContent(DataInputStream s, Type currentType) {
try {
if (currentType == Type.DOUBLE) {
for (int i = 0; i < length(); i++) {
putByGlobalType(i, s.readDouble());
}
} else if (currentType == Type.FLOAT) {
for (int i = 0; i < length(); i++) {
putByGlobalType(i, s.readFloat());
}
} else if (currentType == Type.COMPRESSED) {
String compressionAlgorithm = s.readUTF();
long compressedLength = s.readLong();
long originalLength = s.readLong();
long numberOfElements = s.readLong();
// special case here. We should collect bytes, wrap them into pointer, and then decompress
byte[] temp = new byte[(int) compressedLength];
for (int i = 0; i < compressedLength; i++) {
temp[i] = s.readByte();
}
pointer = new BytePointer(temp);
type = Type.COMPRESSED;
} else if (currentType == Type.HALF) {
for (int i = 0; i < length(); i++) {
putByGlobalType(i, toFloat(s.readShort()));
}
} else {
for (int i = 0; i < length(); i++) {
putByGlobalType(i, s.readInt());
}
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
@Override
public void write(DataOutputStream out) throws IOException {
if (length() >= Integer.MAX_VALUE)
throw new IllegalArgumentException("Length of data buffer can not be >= Integer.MAX_VALUE on output");
// log.info("Saving dType: {}", dataType().name());
out.writeUTF(allocationMode.name());
out.writeInt((int) length());
out.writeUTF(dataType().name());
if (dataType() == Type.DOUBLE) {
for (int i = 0; i < length(); i++)
out.writeDouble(getDouble(i));
} else if (dataType() == Type.INT) {
for (int i = 0; i < length(); i++)
out.writeInt(getInt(i));
} else if (dataType() == Type.HALF) {
for (int i = 0; i < length(); i++) {
out.writeShort(getShort(i));
}
} else {
for (int i = 0; i < length(); i++) {
out.writeFloat(getFloat(i));
}
}
}
public float toFloat(int hbits) {
int mant = hbits & 0x03ff; // 10 bits mantissa
int exp = hbits & 0x7c00; // 5 bits exponent
if (exp == 0x7c00) // NaN/Inf
exp = 0x3fc00; // -> NaN/Inf
else if (exp != 0) // normalized value
{
exp += 0x1c000; // exp - 15 + 127
// "smooth transition" is nonstandard behavior
// if( mant == 0 && exp > 0x1c400 ) // smooth transition
// return Float.intBitsToFloat( ( hbits & 0x8000 ) << 16
// | exp << 13 | 0x3ff );
} else if (mant != 0) // && exp==0 -> subnormal
{
exp = 0x1c400; // make it normal
do {
mant <<= 1; // mantissa * 2
exp -= 0x400; // decrease exp by 1
} while ((mant & 0x400) == 0); // while not normal
mant &= 0x3ff; // discard subnormal bit
} // else +/-0 -> +/-0
return Float.intBitsToFloat( // combine all parts
(hbits & 0x8000) << 16 // sign << ( 31 - 15 )
| (exp | mant) << 13); // value << ( 23 - 10 )
}
@Override
public Object array() {
return null;
}
@Override
public String toString() {
StringBuilder ret = new StringBuilder();
ret.append("[");
for (int i = 0; i < length(); i++) {
ret.append(getNumber(i));
if (i < length() - 1)
ret.append(",");
}
ret.append("]");
return ret.toString();
}
@Override
public int hashCode() {
int result = (int) length;
result = 31 * result + (referencing != null ? referencing.hashCode() : 0);
result = 31 * result + (isPersist ? 1 : 0);
result = 31 * result + (allocationMode != null ? allocationMode.hashCode() : 0);
return result;
}
/**
* Returns the offset of the buffer relative to originalDataBuffer
*
* @return
*/
@Override
public long originalOffset() {
return originalOffset;
}
/**
* Returns tracking point for Allocator
*
* PLEASE NOTE: Suitable & meaningful only for specific backends
*
* @return
*/
@Override
public Long getTrackingPoint() {
return trackingPoint;
}
/**
* Sets tracking point used by Allocator
*
* PLEASE NOTE: Suitable & meaningful only for specific backends
*
* @param trackingPoint
*/
public void setTrackingPoint(Long trackingPoint) {
this.trackingPoint = trackingPoint;
}
/**
* This method returns whether this DataBuffer is constant, or not.
* Constant buffer means that it modified only during creation time, and then it stays the same for all lifecycle. I.e. used in shape info databuffers.
*
* @return
*/
public boolean isConstant() {
return constant;
}
/**
*
* This method allows you to mark databuffer as constant.
*
* PLEASE NOTE: DO NOT USE THIS METHOD, UNLESS YOU'RE 100% SURE WHAT YOU DO
*
* @param reallyConstant
*/
public void setConstant(boolean reallyConstant) {
this.constant = reallyConstant;
}
}
