io.netty.buffer.PooledDirectByteBuf Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to you 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 io.netty.buffer;
import io.netty.util.internal.ObjectPool;
import io.netty.util.internal.ObjectPool.Handle;
import io.netty.util.internal.ObjectPool.ObjectCreator;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
final class PooledDirectByteBuf extends PooledByteBuf {
private static final ObjectPool RECYCLER = ObjectPool.newPool(
new ObjectCreator() {
@Override
public PooledDirectByteBuf newObject(Handle handle) {
return new PooledDirectByteBuf(handle, 0);
}
});
static PooledDirectByteBuf newInstance(int maxCapacity) {
PooledDirectByteBuf buf = RECYCLER.get();
buf.reuse(maxCapacity);
return buf;
}
private PooledDirectByteBuf(Handle recyclerHandle, int maxCapacity) {
super(recyclerHandle, maxCapacity);
}
@Override
protected ByteBuffer newInternalNioBuffer(ByteBuffer memory) {
return memory.duplicate();
}
@Override
public boolean isDirect() {
return true;
}
@Override
protected byte _getByte(int index) {
return memory.get(idx(index));
}
@Override
protected short _getShort(int index) {
return memory.getShort(idx(index));
}
@Override
protected short _getShortLE(int index) {
return ByteBufUtil.swapShort(_getShort(index));
}
@Override
protected int _getUnsignedMedium(int index) {
index = idx(index);
return (memory.get(index) & 0xff) << 16 |
(memory.get(index + 1) & 0xff) << 8 |
memory.get(index + 2) & 0xff;
}
@Override
protected int _getUnsignedMediumLE(int index) {
index = idx(index);
return memory.get(index) & 0xff |
(memory.get(index + 1) & 0xff) << 8 |
(memory.get(index + 2) & 0xff) << 16;
}
@Override
protected int _getInt(int index) {
return memory.getInt(idx(index));
}
@Override
protected int _getIntLE(int index) {
return ByteBufUtil.swapInt(_getInt(index));
}
@Override
protected long _getLong(int index) {
return memory.getLong(idx(index));
}
@Override
protected long _getLongLE(int index) {
return ByteBufUtil.swapLong(_getLong(index));
}
@Override
public ByteBuf getBytes(int index, ByteBuf dst, int dstIndex, int length) {
checkDstIndex(index, length, dstIndex, dst.capacity());
if (dst.hasArray()) {
getBytes(index, dst.array(), dst.arrayOffset() + dstIndex, length);
} else if (dst.nioBufferCount() > 0) {
for (ByteBuffer bb: dst.nioBuffers(dstIndex, length)) {
int bbLen = bb.remaining();
getBytes(index, bb);
index += bbLen;
}
} else {
dst.setBytes(dstIndex, this, index, length);
}
return this;
}
@Override
public ByteBuf getBytes(int index, byte[] dst, int dstIndex, int length) {
checkDstIndex(index, length, dstIndex, dst.length);
_internalNioBuffer(index, length, true).get(dst, dstIndex, length);
return this;
}
@Override
public ByteBuf readBytes(byte[] dst, int dstIndex, int length) {
checkDstIndex(length, dstIndex, dst.length);
_internalNioBuffer(readerIndex, length, false).get(dst, dstIndex, length);
readerIndex += length;
return this;
}
@Override
public ByteBuf getBytes(int index, ByteBuffer dst) {
dst.put(duplicateInternalNioBuffer(index, dst.remaining()));
return this;
}
@Override
public ByteBuf readBytes(ByteBuffer dst) {
int length = dst.remaining();
checkReadableBytes(length);
dst.put(_internalNioBuffer(readerIndex, length, false));
readerIndex += length;
return this;
}
@Override
public ByteBuf getBytes(int index, OutputStream out, int length) throws IOException {
getBytes(index, out, length, false);
return this;
}
private void getBytes(int index, OutputStream out, int length, boolean internal) throws IOException {
checkIndex(index, length);
if (length == 0) {
return;
}
ByteBufUtil.readBytes(alloc(), internal ? internalNioBuffer() : memory.duplicate(), idx(index), length, out);
}
@Override
public ByteBuf readBytes(OutputStream out, int length) throws IOException {
checkReadableBytes(length);
getBytes(readerIndex, out, length, true);
readerIndex += length;
return this;
}
@Override
protected void _setByte(int index, int value) {
memory.put(idx(index), (byte) value);
}
@Override
protected void _setShort(int index, int value) {
memory.putShort(idx(index), (short) value);
}
@Override
protected void _setShortLE(int index, int value) {
_setShort(index, ByteBufUtil.swapShort((short) value));
}
@Override
protected void _setMedium(int index, int value) {
index = idx(index);
memory.put(index, (byte) (value >>> 16));
memory.put(index + 1, (byte) (value >>> 8));
memory.put(index + 2, (byte) value);
}
@Override
protected void _setMediumLE(int index, int value) {
index = idx(index);
memory.put(index, (byte) value);
memory.put(index + 1, (byte) (value >>> 8));
memory.put(index + 2, (byte) (value >>> 16));
}
@Override
protected void _setInt(int index, int value) {
memory.putInt(idx(index), value);
}
@Override
protected void _setIntLE(int index, int value) {
_setInt(index, ByteBufUtil.swapInt(value));
}
@Override
protected void _setLong(int index, long value) {
memory.putLong(idx(index), value);
}
@Override
protected void _setLongLE(int index, long value) {
_setLong(index, ByteBufUtil.swapLong(value));
}
@Override
public ByteBuf setBytes(int index, ByteBuf src, int srcIndex, int length) {
checkSrcIndex(index, length, srcIndex, src.capacity());
if (src.hasArray()) {
setBytes(index, src.array(), src.arrayOffset() + srcIndex, length);
} else if (src.nioBufferCount() > 0) {
for (ByteBuffer bb: src.nioBuffers(srcIndex, length)) {
int bbLen = bb.remaining();
setBytes(index, bb);
index += bbLen;
}
} else {
src.getBytes(srcIndex, this, index, length);
}
return this;
}
@Override
public ByteBuf setBytes(int index, byte[] src, int srcIndex, int length) {
checkSrcIndex(index, length, srcIndex, src.length);
_internalNioBuffer(index, length, false).put(src, srcIndex, length);
return this;
}
@Override
public ByteBuf setBytes(int index, ByteBuffer src) {
int length = src.remaining();
checkIndex(index, length);
ByteBuffer tmpBuf = internalNioBuffer();
if (src == tmpBuf) {
src = src.duplicate();
}
index = idx(index);
tmpBuf.limit(index + length).position(index);
tmpBuf.put(src);
return this;
}
@Override
public int setBytes(int index, InputStream in, int length) throws IOException {
checkIndex(index, length);
byte[] tmp = ByteBufUtil.threadLocalTempArray(length);
int readBytes = in.read(tmp, 0, length);
if (readBytes <= 0) {
return readBytes;
}
ByteBuffer tmpBuf = internalNioBuffer();
tmpBuf.position(idx(index));
tmpBuf.put(tmp, 0, readBytes);
return readBytes;
}
@Override
public ByteBuf copy(int index, int length) {
checkIndex(index, length);
ByteBuf copy = alloc().directBuffer(length, maxCapacity());
return copy.writeBytes(this, index, length);
}
@Override
public boolean hasArray() {
return false;
}
@Override
public byte[] array() {
throw new UnsupportedOperationException("direct buffer");
}
@Override
public int arrayOffset() {
throw new UnsupportedOperationException("direct buffer");
}
@Override
public boolean hasMemoryAddress() {
return false;
}
@Override
public long memoryAddress() {
throw new UnsupportedOperationException();
}
}