| /* |
| * 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.geode.internal.net; |
| |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| |
| /** |
| * An {@link AutoCloseable} meant to be acquired in a try-with-resources statement. The resource (a |
| * {@link ByteBuffer}) is available (for reading and modification) in the scope of the |
| * try-with-resources. |
| * |
| * This implementation is a "no-op". It performs no actual locking and no reference counting. It's |
| * meant for use with the {@link NioPlainEngine} only, since that engine keeps no buffers and so, |
| * needs no reference counting on buffers, nor any synchronization around access to buffers. |
| * |
| * See also {@link ByteBufferSharingImpl} |
| */ |
| class ByteBufferSharingNoOp implements ByteBufferSharing { |
| |
| private final ByteBuffer buffer; |
| |
| ByteBufferSharingNoOp(final ByteBuffer buffer) { |
| this.buffer = buffer; |
| } |
| |
| @Override |
| public ByteBuffer getBuffer() { |
| return buffer; |
| } |
| |
| @Override |
| public ByteBuffer expandWriteBufferIfNeeded(final int newCapacity) throws IOException { |
| throw new UnsupportedOperationException("Can't expand buffer when using NioPlainEngine"); |
| } |
| |
| @Override |
| public void close() {} |
| } |