| package org.apache.directmemory.memory.allocator; |
| |
| /* |
| * 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. |
| */ |
| |
| import java.lang.reflect.InvocationTargetException; |
| import java.lang.reflect.Method; |
| import java.nio.ByteBuffer; |
| |
| import static com.google.common.base.Preconditions.checkArgument; |
| |
| /** |
| * Utility class around direct {@link ByteBuffer} |
| * |
| */ |
| public class DirectByteBufferUtils |
| { |
| |
| /** |
| * Clear and release the internal content of a direct {@link ByteBuffer}. |
| * Clearing manually the content avoid waiting till the GC do his job. |
| * @param buffer : the buffer to clear |
| * @throws IllegalArgumentException |
| * @throws IllegalAccessException |
| * @throws InvocationTargetException |
| * @throws SecurityException |
| * @throws NoSuchMethodException |
| */ |
| public static void destroyDirectByteBuffer( final ByteBuffer buffer ) |
| throws IllegalArgumentException, IllegalAccessException, InvocationTargetException, SecurityException, |
| NoSuchMethodException |
| { |
| |
| checkArgument( buffer.isDirect(), "toBeDestroyed isn't direct!" ); |
| |
| Method cleanerMethod = buffer.getClass().getMethod( "cleaner" ); |
| cleanerMethod.setAccessible( true ); |
| Object cleaner = cleanerMethod.invoke( buffer ); |
| Method cleanMethod = cleaner.getClass().getMethod( "clean" ); |
| cleanMethod.setAccessible( true ); |
| cleanMethod.invoke( cleaner ); |
| |
| } |
| |
| } |