geode-core/src/main/java/org/apache/geode/internal/offheap/MemoryInspector.java

/*
 * 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.offheap;

import java.util.List;

/**
 * Provides for inspection of meta-data for off-heap memory blocks.
 *
 * @since Geode 1.0
 */
public interface MemoryInspector {

  void clearSnapshot();

  void createSnapshot();

  List<MemoryBlock> getSnapshot();

  MemoryBlock getFirstBlock();

  List<MemoryBlock> getAllBlocks();

  List<MemoryBlock> getAllocatedBlocks();

  MemoryBlock getBlockAfter(MemoryBlock block);

}