| /* |
| * 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; |
| |
| import java.nio.ByteBuffer; |
| import java.util.concurrent.atomic.AtomicBoolean; |
| |
| /** |
| * Simple wrapper for a {@link ByteBuffer} that remembers if the buffer has been |
| * flipped or not. |
| */ |
| public class ByteBufferHolder { |
| |
| private final ByteBuffer buf; |
| private final AtomicBoolean flipped; |
| |
| public ByteBufferHolder(ByteBuffer buf, boolean flipped) { |
| this.buf = buf; |
| this.flipped = new AtomicBoolean(flipped); |
| } |
| |
| |
| public ByteBuffer getBuf() { |
| return buf; |
| } |
| |
| |
| public boolean isFlipped() { |
| return flipped.get(); |
| } |
| |
| |
| public boolean flip() { |
| if (flipped.compareAndSet(false, true)) { |
| buf.flip(); |
| return true; |
| } else { |
| return false; |
| } |
| } |
| |
| |
| public boolean hasData() { |
| if (flipped.get()) { |
| return buf.remaining()>0; |
| } else { |
| return buf.position()>0; |
| } |
| } |
| } |