/*
* Copyright 2012 The Netty Project
*
* The Netty Project licenses this file to 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.
Recycler;
import io.netty.util.internal.
PlatformDependent;
import java.io.
IOException;
import java.io.
InputStream;
import java.io.
OutputStream;
import java.nio.
ByteBuffer;
import java.nio.channels.
ClosedChannelException;
import java.nio.channels.
FileChannel;
import java.nio.channels.
GatheringByteChannel;
import java.nio.channels.
ScatteringByteChannel;
class
PooledHeapByteBuf extends
PooledByteBuf<byte[]> {
private static final
Recycler<
PooledHeapByteBuf>
RECYCLER = new
Recycler<
PooledHeapByteBuf>() {
@
Override
protected
PooledHeapByteBuf newObject(
Handle<
PooledHeapByteBuf>
handle) {
return new
PooledHeapByteBuf(
handle, 0);
}
};
static
PooledHeapByteBuf newInstance(int
maxCapacity) {
PooledHeapByteBuf buf =
RECYCLER.
get();
buf.
reuse(
maxCapacity);
return
buf;
}
PooledHeapByteBuf(
Recycler.
Handle<? extends
PooledHeapByteBuf>
recyclerHandle, int
maxCapacity) {
super(
recyclerHandle,
maxCapacity);
}
@
Override
public final boolean
isDirect() {
return false;
}
@
Override
protected byte
_getByte(int
index) {
return
HeapByteBufUtil.
getByte(
memory,
idx(
index));
}
@
Override
protected short
_getShort(int
index) {
return
HeapByteBufUtil.
getShort(
memory,
idx(
index));
}
@
Override
protected short
_getShortLE(int
index) {
return
HeapByteBufUtil.
getShortLE(
memory,
idx(
index));
}
@
Override
protected int
_getUnsignedMedium(int
index) {
return
HeapByteBufUtil.
getUnsignedMedium(
memory,
idx(
index));
}
@
Override
protected int
_getUnsignedMediumLE(int
index) {
return
HeapByteBufUtil.
getUnsignedMediumLE(
memory,
idx(
index));
}
@
Override
protected int
_getInt(int
index) {
return
HeapByteBufUtil.
getInt(
memory,
idx(
index));
}
@
Override
protected int
_getIntLE(int
index) {
return
HeapByteBufUtil.
getIntLE(
memory,
idx(
index));
}
@
Override
protected long
_getLong(int
index) {
return
HeapByteBufUtil.
getLong(
memory,
idx(
index));
}
@
Override
protected long
_getLongLE(int
index) {
return
HeapByteBufUtil.
getLongLE(
memory,
idx(
index));
}
@
Override
public final
ByteBuf getBytes(int
index,
ByteBuf dst, int
dstIndex, int
length) {
checkDstIndex(
index,
length,
dstIndex,
dst.
capacity());
if (
dst.
hasMemoryAddress()) {
PlatformDependent.
copyMemory(
memory,
idx(
index),
dst.
memoryAddress() +
dstIndex,
length);
} else if (
dst.
hasArray()) {
getBytes(
index,
dst.
array(),
dst.
arrayOffset() +
dstIndex,
length);
} else {
dst.
setBytes(
dstIndex,
memory,
idx(
index),
length);
}
return this;
}
@
Override
public final
ByteBuf getBytes(int
index, byte[]
dst, int
dstIndex, int
length) {
checkDstIndex(
index,
length,
dstIndex,
dst.length);
System.
arraycopy(
memory,
idx(
index),
dst,
dstIndex,
length);
return this;
}
@
Override
public final
ByteBuf getBytes(int
index,
ByteBuffer dst) {
checkIndex(
index,
dst.
remaining());
dst.
put(
memory,
idx(
index),
dst.
remaining());
return this;
}
@
Override
public final
ByteBuf getBytes(int
index,
OutputStream out, int
length) throws
IOException {
checkIndex(
index,
length);
out.
write(
memory,
idx(
index),
length);
return this;
}
@
Override
public final int
getBytes(int
index,
GatheringByteChannel out, int
length) throws
IOException {
return
getBytes(
index,
out,
length, false);
}
private int
getBytes(int
index,
GatheringByteChannel out, int
length, boolean
internal) throws
IOException {
checkIndex(
index,
length);
index =
idx(
index);
ByteBuffer tmpBuf;
if (
internal) {
tmpBuf =
internalNioBuffer();
} else {
tmpBuf =
ByteBuffer.
wrap(
memory);
}
return
out.
write((
ByteBuffer)
tmpBuf.
clear().
position(
index).
limit(
index +
length));
}
@
Override
public final int
getBytes(int
index,
FileChannel out, long
position, int
length) throws
IOException {
return
getBytes(
index,
out,
position,
length, false);
}
private int
getBytes(int
index,
FileChannel out, long
position, int
length, boolean
internal) throws
IOException {
checkIndex(
index,
length);
index =
idx(
index);
ByteBuffer tmpBuf =
internal ?
internalNioBuffer() :
ByteBuffer.
wrap(
memory);
return
out.
write((
ByteBuffer)
tmpBuf.
clear().
position(
index).
limit(
index +
length),
position);
}
@
Override
public final int
readBytes(
GatheringByteChannel out, int
length) throws
IOException {
checkReadableBytes(
length);
int
readBytes =
getBytes(
readerIndex,
out,
length, true);
readerIndex +=
readBytes;
return
readBytes;
}
@
Override
public final int
readBytes(
FileChannel out, long
position, int
length) throws
IOException {
checkReadableBytes(
length);
int
readBytes =
getBytes(
readerIndex,
out,
position,
length, true);
readerIndex +=
readBytes;
return
readBytes;
}
@
Override
protected void
_setByte(int
index, int
value) {
HeapByteBufUtil.
setByte(
memory,
idx(
index),
value);
}
@
Override
protected void
_setShort(int
index, int
value) {
HeapByteBufUtil.
setShort(
memory,
idx(
index),
value);
}
@
Override
protected void
_setShortLE(int
index, int
value) {
HeapByteBufUtil.
setShortLE(
memory,
idx(
index),
value);
}
@
Override
protected void
_setMedium(int
index, int
value) {
HeapByteBufUtil.
setMedium(
memory,
idx(
index),
value);
}
@
Override
protected void
_setMediumLE(int
index, int
value) {
HeapByteBufUtil.
setMediumLE(
memory,
idx(
index),
value);
}
@
Override
protected void
_setInt(int
index, int
value) {
HeapByteBufUtil.
setInt(
memory,
idx(
index),
value);
}
@
Override
protected void
_setIntLE(int
index, int
value) {
HeapByteBufUtil.
setIntLE(
memory,
idx(
index),
value);
}
@
Override
protected void
_setLong(int
index, long
value) {
HeapByteBufUtil.
setLong(
memory,
idx(
index),
value);
}
@
Override
protected void
_setLongLE(int
index, long
value) {
HeapByteBufUtil.
setLongLE(
memory,
idx(
index),
value);
}
@
Override
public final
ByteBuf setBytes(int
index,
ByteBuf src, int
srcIndex, int
length) {
checkSrcIndex(
index,
length,
srcIndex,
src.
capacity());
if (
src.
hasMemoryAddress()) {
PlatformDependent.
copyMemory(
src.
memoryAddress() +
srcIndex,
memory,
idx(
index),
length);
} else if (
src.
hasArray()) {
setBytes(
index,
src.
array(),
src.
arrayOffset() +
srcIndex,
length);
} else {
src.
getBytes(
srcIndex,
memory,
idx(
index),
length);
}
return this;
}
@
Override
public final
ByteBuf setBytes(int
index, byte[]
src, int
srcIndex, int
length) {
checkSrcIndex(
index,
length,
srcIndex,
src.length);
System.
arraycopy(
src,
srcIndex,
memory,
idx(
index),
length);
return this;
}
@
Override
public final
ByteBuf setBytes(int
index,
ByteBuffer src) {
int
length =
src.
remaining();
checkIndex(
index,
length);
src.
get(
memory,
idx(
index),
length);
return this;
}
@
Override
public final int
setBytes(int
index,
InputStream in, int
length) throws
IOException {
checkIndex(
index,
length);
return
in.
read(
memory,
idx(
index),
length);
}
@
Override
public final int
setBytes(int
index,
ScatteringByteChannel in, int
length) throws
IOException {
checkIndex(
index,
length);
index =
idx(
index);
try {
return
in.
read((
ByteBuffer)
internalNioBuffer().
clear().
position(
index).
limit(
index +
length));
} catch (
ClosedChannelException ignored) {
return -1;
}
}
@
Override
public final int
setBytes(int
index,
FileChannel in, long
position, int
length) throws
IOException {
checkIndex(
index,
length);
index =
idx(
index);
try {
return
in.
read((
ByteBuffer)
internalNioBuffer().
clear().
position(
index).
limit(
index +
length),
position);
} catch (
ClosedChannelException ignored) {
return -1;
}
}
@
Override
public final
ByteBuf copy(int
index, int
length) {
checkIndex(
index,
length);
ByteBuf copy =
alloc().
heapBuffer(
length,
maxCapacity());
copy.
writeBytes(
memory,
idx(
index),
length);
return
copy;
}
@
Override
public final int
nioBufferCount() {
return 1;
}
@
Override
public final
ByteBuffer[]
nioBuffers(int
index, int
length) {
return new
ByteBuffer[] {
nioBuffer(
index,
length) };
}
@
Override
public final
ByteBuffer nioBuffer(int
index, int
length) {
checkIndex(
index,
length);
index =
idx(
index);
ByteBuffer buf =
ByteBuffer.
wrap(
memory,
index,
length);
return
buf.
slice();
}
@
Override
public final
ByteBuffer internalNioBuffer(int
index, int
length) {
checkIndex(
index,
length);
index =
idx(
index);
return (
ByteBuffer)
internalNioBuffer().
clear().
position(
index).
limit(
index +
length);
}
@
Override
public final boolean
hasArray() {
return true;
}
@
Override
public final byte[]
array() {
ensureAccessible();
return
memory;
}
@
Override
public final int
arrayOffset() {
return
offset;
}
@
Override
public final boolean
hasMemoryAddress() {
return false;
}
@
Override
public final long
memoryAddress() {
throw new
UnsupportedOperationException();
}
@
Override
protected final
ByteBuffer newInternalNioBuffer(byte[]
memory) {
return
ByteBuffer.
wrap(
memory);
}
}