io.netty.buffer.PooledUnsafeDirectByteBuf 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 2013 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:
*
* https://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 io.netty.util.internal.PlatformDependent;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.nio.ByteBuffer;
final class PooledUnsafeDirectByteBuf extends PooledByteBuf {
private static final ObjectPool RECYCLER = ObjectPool.newPool(
new ObjectCreator() {
@Override
public PooledUnsafeDirectByteBuf newObject(Handle handle) {
return new PooledUnsafeDirectByteBuf(handle, 0);
}
});
static PooledUnsafeDirectByteBuf newInstance(int maxCapacity) {
PooledUnsafeDirectByteBuf buf = RECYCLER.get();
buf.reuse(maxCapacity);
return buf;
}
private long memoryAddress;
private PooledUnsafeDirectByteBuf(Handle recyclerHandle, int maxCapacity) {
super(recyclerHandle, maxCapacity);
}
@Override
void init(PoolChunk chunk, ByteBuffer nioBuffer,
long handle, int offset, int length, int maxLength, PoolArenasCache cache) {
super.init(chunk, nioBuffer, handle, offset, length, maxLength, cache);
initMemoryAddress();
}
@Override
void initUnpooled(PoolChunk chunk, int length) {
super.initUnpooled(chunk, length);
initMemoryAddress();
}
private void initMemoryAddress() {
memoryAddress = PlatformDependent.directBufferAddress(memory) + offset;
}
@Override
protected ByteBuffer newInternalNioBuffer(ByteBuffer memory) {
return memory.duplicate();
}
@Override
public boolean isDirect() {
return true;
}
@Override
protected byte _getByte(int index) {
return UnsafeByteBufUtil.getByte(addr(index));
}
@Override
protected short _getShort(int index) {
return UnsafeByteBufUtil.getShort(addr(index));
}
@Override
protected short _getShortLE(int index) {
return UnsafeByteBufUtil.getShortLE(addr(index));
}
@Override
protected int _getUnsignedMedium(int index) {
return UnsafeByteBufUtil.getUnsignedMedium(addr(index));
}
@Override
protected int _getUnsignedMediumLE(int index) {
return UnsafeByteBufUtil.getUnsignedMediumLE(addr(index));
}
@Override
protected int _getInt(int index) {
return UnsafeByteBufUtil.getInt(addr(index));
}
@Override
protected int _getIntLE(int index) {
return UnsafeByteBufUtil.getIntLE(addr(index));
}
@Override
protected long _getLong(int index) {
return UnsafeByteBufUtil.getLong(addr(index));
}
@Override
protected long _getLongLE(int index) {
return UnsafeByteBufUtil.getLongLE(addr(index));
}
@Override
public ByteBuf getBytes(int index, ByteBuf dst, int dstIndex, int length) {
UnsafeByteBufUtil.getBytes(this, addr(index), index, dst, dstIndex, length);
return this;
}
@Override
public ByteBuf getBytes(int index, byte[] dst, int dstIndex, int length) {
UnsafeByteBufUtil.getBytes(this, addr(index), index, dst, dstIndex, length);
return this;
}
@Override
public ByteBuf getBytes(int index, ByteBuffer dst) {
UnsafeByteBufUtil.getBytes(this, addr(index), index, dst);
return this;
}
@Override
public ByteBuf getBytes(int index, OutputStream out, int length) throws IOException {
UnsafeByteBufUtil.getBytes(this, addr(index), index, out, length);
return this;
}
@Override
protected void _setByte(int index, int value) {
UnsafeByteBufUtil.setByte(addr(index), (byte) value);
}
@Override
protected void _setShort(int index, int value) {
UnsafeByteBufUtil.setShort(addr(index), value);
}
@Override
protected void _setShortLE(int index, int value) {
UnsafeByteBufUtil.setShortLE(addr(index), value);
}
@Override
protected void _setMedium(int index, int value) {
UnsafeByteBufUtil.setMedium(addr(index), value);
}
@Override
protected void _setMediumLE(int index, int value) {
UnsafeByteBufUtil.setMediumLE(addr(index), value);
}
@Override
protected void _setInt(int index, int value) {
UnsafeByteBufUtil.setInt(addr(index), value);
}
@Override
protected void _setIntLE(int index, int value) {
UnsafeByteBufUtil.setIntLE(addr(index), value);
}
@Override
protected void _setLong(int index, long value) {
UnsafeByteBufUtil.setLong(addr(index), value);
}
@Override
protected void _setLongLE(int index, long value) {
UnsafeByteBufUtil.setLongLE(addr(index), value);
}
@Override
public ByteBuf setBytes(int index, ByteBuf src, int srcIndex, int length) {
UnsafeByteBufUtil.setBytes(this, addr(index), index, src, srcIndex, length);
return this;
}
@Override
public ByteBuf setBytes(int index, byte[] src, int srcIndex, int length) {
UnsafeByteBufUtil.setBytes(this, addr(index), index, src, srcIndex, length);
return this;
}
@Override
public ByteBuf setBytes(int index, ByteBuffer src) {
UnsafeByteBufUtil.setBytes(this, addr(index), index, src);
return this;
}
@Override
public int setBytes(int index, InputStream in, int length) throws IOException {
return UnsafeByteBufUtil.setBytes(this, addr(index), index, in, length);
}
@Override
public ByteBuf copy(int index, int length) {
return UnsafeByteBufUtil.copy(this, addr(index), 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 true;
}
@Override
public long memoryAddress() {
ensureAccessible();
return memoryAddress;
}
private long addr(int index) {
return memoryAddress + index;
}
@Override
protected SwappedByteBuf newSwappedByteBuf() {
if (PlatformDependent.isUnaligned()) {
// Only use if unaligned access is supported otherwise there is no gain.
return new UnsafeDirectSwappedByteBuf(this);
}
return super.newSwappedByteBuf();
}
@Override
public ByteBuf setZero(int index, int length) {
checkIndex(index, length);
UnsafeByteBufUtil.setZero(addr(index), length);
return this;
}
@Override
public ByteBuf writeZero(int length) {
ensureWritable(length);
int wIndex = writerIndex;
UnsafeByteBufUtil.setZero(addr(wIndex), length);
writerIndex = wIndex + length;
return this;
}
}