/*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed with
* this work for additional information regarding copyright ownership .
* The ASF 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 org.apache.coyote.http2;
import java.nio.ByteBuffer;
/**
* Represents a closed stream in the priority tree . Used in preference to the full { @ link Stream } as has much lower
* memory usage .
*/
class RecycledStream extends AbstractNonZeroStream {
private final String connectionId;
private int remainingFlowControlWindow;
RecycledStream(String connectionId, Integer identifier, StreamStateMachine state, int remainingFlowControlWindow) {
super (identifier, state);
this .connectionId = connectionId;
this .remainingFlowControlWindow = remainingFlowControlWindow;
}
@Override
String getConnectionId() {
return connectionId;
}
@Override
void incrementWindowSize(int increment) throws Http2Exception {
// NO-OP
}
@Override
void receivedData(int payloadSize) throws ConnectionException {
remainingFlowControlWindow -= payloadSize;
}
/**
* { @ inheritDoc }
* < p >
* This implementation will return an zero length ByteBuffer to trigger a flow control error if more DATA frame
* payload than the remaining flow control window is received for this recycled stream .
*/
@Override
ByteBuffer getInputByteBuffer() {
if (remainingFlowControlWindow < 0 ) {
return ZERO_LENGTH_BYTEBUFFER;
} else {
return null ;
}
}
}
Messung V0.5 in Prozent C=94 H=84 G=88
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*Eine klare Vorstellung vom Zielzustand