/*
* 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.channel;
/**
* The {@link RecvByteBufAllocator} that always yields the same buffer
* size prediction. This predictor ignores the feed back from the I/O thread.
*/
public class
FixedRecvByteBufAllocator extends
DefaultMaxMessagesRecvByteBufAllocator {
private final int
bufferSize;
private final class
HandleImpl extends
MaxMessageHandle {
private final int
bufferSize;
public
HandleImpl(int
bufferSize) {
this.
bufferSize =
bufferSize;
}
@
Override
public int
guess() {
return
bufferSize;
}
}
/**
* Creates a new predictor that always returns the same prediction of
* the specified buffer size.
*/
public
FixedRecvByteBufAllocator(int
bufferSize) {
if (
bufferSize <= 0) {
throw new
IllegalArgumentException(
"bufferSize must greater than 0: " +
bufferSize);
}
this.
bufferSize =
bufferSize;
}
@
SuppressWarnings("deprecation")
@
Override
public
Handle newHandle() {
return new
HandleImpl(
bufferSize);
}
@
Override
public
FixedRecvByteBufAllocator respectMaybeMoreData(boolean
respectMaybeMoreData) {
super.respectMaybeMoreData(
respectMaybeMoreData);
return this;
}
}