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Share code between Heap ByteBuf implementations

Browse Source 
Motiviation:

We have a lot of duplicated code which makes it hard to maintain.

Modification:

Move shared code to HeapByteBufUtil and use it in the implementations.

Result:

Less duplicated code and so easier to maintain.
This commit is contained in:
Norman Maurer 2015-10-21 11:24:18 +02:00
parent 164f6f1731
commit 1055c8787e
3 changed files with 109 additions and 78 deletions
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89
buffer/src/main/java/io/netty/buffer/HeapByteBufUtil.java Normal file
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@ -0,0 +1,89 @@
/*
* Copyright 2015 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;
/**
* Utility class for heap buffers.
*/
final class HeapByteBufUtil {
static byte getByte(byte[] memory, int index) {
return memory[index];
}
static short getShort(byte[] memory, int index) {
return (short) (memory[index] << 8 | memory[index + 1] & 0xFF);
}
static int getUnsignedMedium(byte[] memory, int index) {
return (memory[index] & 0xff) << 16 |
(memory[index + 1] & 0xff) << 8 |
memory[index + 2] & 0xff;
}
static int getInt(byte[] memory, int index) {
return (memory[index] & 0xff) << 24 |
(memory[index + 1] & 0xff) << 16 |
(memory[index + 2] & 0xff) << 8 |
memory[index + 3] & 0xff;
}
static long getLong(byte[] memory, int index) {
return ((long) memory[index] & 0xff) << 56 |
((long) memory[index + 1] & 0xff) << 48 |
((long) memory[index + 2] & 0xff) << 40 |
((long) memory[index + 3] & 0xff) << 32 |
((long) memory[index + 4] & 0xff) << 24 |
((long) memory[index + 5] & 0xff) << 16 |
((long) memory[index + 6] & 0xff) << 8 |
(long) memory[index + 7] & 0xff;
}
static void setByte(byte[] memory, int index, int value) {
memory[index] = (byte) value;
}
static void setShort(byte[] memory, int index, int value) {
memory[index] = (byte) (value >>> 8);
memory[index + 1] = (byte) value;
}
static void setMedium(byte[] memory, int index, int value) {
memory[index] = (byte) (value >>> 16);
memory[index + 1] = (byte) (value >>> 8);
memory[index + 2] = (byte) value;
}
static void setInt(byte[] memory, int index, int value) {
memory[index] = (byte) (value >>> 24);
memory[index + 1] = (byte) (value >>> 16);
memory[index + 2] = (byte) (value >>> 8);
memory[index + 3] = (byte) value;
}
static void setLong(byte[] memory, int index, long value) {
memory[index] = (byte) (value >>> 56);
memory[index + 1] = (byte) (value >>> 48);
memory[index + 2] = (byte) (value >>> 40);
memory[index + 3] = (byte) (value >>> 32);
memory[index + 4] = (byte) (value >>> 24);
memory[index + 5] = (byte) (value >>> 16);
memory[index + 6] = (byte) (value >>> 8);
memory[index + 7] = (byte) value;
}
private HeapByteBufUtil() { }
}

53
buffer/src/main/java/io/netty/buffer/PooledHeapByteBuf.java
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@ -51,43 +51,27 @@ class PooledHeapByteBuf extends PooledByteBuf<byte[]> {
@Override
protected byte _getByte(int index) {
return memory[idx(index)];
return HeapByteBufUtil.getByte(memory, idx(index));
}
@Override
protected short _getShort(int index) {
index = idx(index);
return (short) (memory[index] << 8 | memory[index + 1] & 0xFF);
return HeapByteBufUtil.getShort(memory, idx(index));
}
@Override
protected int _getUnsignedMedium(int index) {
index = idx(index);
return (memory[index] & 0xff) << 16 |
(memory[index + 1] & 0xff) << 8 |
memory[index + 2] & 0xff;
return HeapByteBufUtil.getUnsignedMedium(memory, idx(index));
}
@Override
protected int _getInt(int index) {
index = idx(index);
return (memory[index] & 0xff) << 24 |
(memory[index + 1] & 0xff) << 16 |
(memory[index + 2] & 0xff) << 8 |
memory[index + 3] & 0xff;
return HeapByteBufUtil.getInt(memory, idx(index));
}
@Override
protected long _getLong(int index) {
index = idx(index);
return ((long) memory[index] & 0xff) << 56 |
((long) memory[index + 1] & 0xff) << 48 |
((long) memory[index + 2] & 0xff) << 40 |
((long) memory[index + 3] & 0xff) << 32 |
((long) memory[index + 4] & 0xff) << 24 |
((long) memory[index + 5] & 0xff) << 16 |
((long) memory[index + 6] & 0xff) << 8 |
(long) memory[index + 7] & 0xff;
return HeapByteBufUtil.getLong(memory, idx(index));
}
@Override
@ -151,44 +135,27 @@ class PooledHeapByteBuf extends PooledByteBuf<byte[]> {
@Override
protected void _setByte(int index, int value) {
memory[idx(index)] = (byte) value;
HeapByteBufUtil.setByte(memory, idx(index), value);
}
@Override
protected void _setShort(int index, int value) {
index = idx(index);
memory[index] = (byte) (value >>> 8);
memory[index + 1] = (byte) value;
HeapByteBufUtil.setShort(memory, idx(index), value);
}
@Override
protected void _setMedium(int index, int value) {
index = idx(index);
memory[index] = (byte) (value >>> 16);
memory[index + 1] = (byte) (value >>> 8);
memory[index + 2] = (byte) value;
HeapByteBufUtil.setMedium(memory, idx(index), value);
}
@Override
protected void _setInt(int index, int value) {
index = idx(index);
memory[index] = (byte) (value >>> 24);
memory[index + 1] = (byte) (value >>> 16);
memory[index + 2] = (byte) (value >>> 8);
memory[index + 3] = (byte) value;
HeapByteBufUtil.setInt(memory, idx(index), value);
}
@Override
protected void _setLong(int index, long value) {
index = idx(index);
memory[index] = (byte) (value >>> 56);
memory[index + 1] = (byte) (value >>> 48);
memory[index + 2] = (byte) (value >>> 40);
memory[index + 3] = (byte) (value >>> 32);
memory[index + 4] = (byte) (value >>> 24);
memory[index + 5] = (byte) (value >>> 16);
memory[index + 6] = (byte) (value >>> 8);
memory[index + 7] = (byte) value;
HeapByteBufUtil.setLong(memory, idx(index), value);
}
@Override

45
buffer/src/main/java/io/netty/buffer/UnpooledHeapByteBuf.java
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@ -289,7 +289,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected byte _getByte(int index) {
return array[index];
return HeapByteBufUtil.getByte(array, index);
}
@Override
@ -300,7 +300,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected short _getShort(int index) {
return (short) (array[index] << 8 | array[index + 1] & 0xFF);
return HeapByteBufUtil.getShort(array, index);
}
@Override
@ -311,9 +311,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected int _getUnsignedMedium(int index) {
return (array[index] & 0xff) << 16 |
(array[index + 1] & 0xff) << 8 |
array[index + 2] & 0xff;
return HeapByteBufUtil.getUnsignedMedium(array, index);
}
@Override
@ -324,10 +322,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected int _getInt(int index) {
return (array[index] & 0xff) << 24 |
(array[index + 1] & 0xff) << 16 |
(array[index + 2] & 0xff) << 8 |
array[index + 3] & 0xff;
return HeapByteBufUtil.getInt(array, index);
}
@Override
@ -338,14 +333,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected long _getLong(int index) {
return ((long) array[index] & 0xff) << 56 |
((long) array[index + 1] & 0xff) << 48 |
((long) array[index + 2] & 0xff) << 40 |
((long) array[index + 3] & 0xff) << 32 |
((long) array[index + 4] & 0xff) << 24 |
((long) array[index + 5] & 0xff) << 16 |
((long) array[index + 6] & 0xff) << 8 |
(long) array[index + 7] & 0xff;
return HeapByteBufUtil.getLong(array, index);
}
@Override
@ -357,7 +345,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected void _setByte(int index, int value) {
array[index] = (byte) value;
HeapByteBufUtil.setByte(array, index, value);
}
@Override
@ -369,8 +357,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected void _setShort(int index, int value) {
array[index] = (byte) (value >>> 8);
array[index + 1] = (byte) value;
HeapByteBufUtil.setShort(array, index, value);
}
@Override
@ -382,9 +369,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected void _setMedium(int index, int value) {
array[index] = (byte) (value >>> 16);
array[index + 1] = (byte) (value >>> 8);
array[index + 2] = (byte) value;
HeapByteBufUtil.setMedium(array, index, value);
}
@Override
@ -396,10 +381,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected void _setInt(int index, int value) {
array[index] = (byte) (value >>> 24);
array[index + 1] = (byte) (value >>> 16);
array[index + 2] = (byte) (value >>> 8);
array[index + 3] = (byte) value;
HeapByteBufUtil.setInt(array, index, value);
}
@Override
@ -411,14 +393,7 @@ public class UnpooledHeapByteBuf extends AbstractReferenceCountedByteBuf {
@Override
protected void _setLong(int index, long value) {
array[index] = (byte) (value >>> 56);
array[index + 1] = (byte) (value >>> 48);
array[index + 2] = (byte) (value >>> 40);
array[index + 3] = (byte) (value >>> 32);
array[index + 4] = (byte) (value >>> 24);
array[index + 5] = (byte) (value >>> 16);
array[index + 6] = (byte) (value >>> 8);
array[index + 7] = (byte) value;
HeapByteBufUtil.setLong(array, index, value);
}
@Override