| /* |
| * 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; |
| |
| /** |
| * Implements the Slab interface using AddressableMemoryManager. |
| * |
| * @since Geode 1.0 |
| */ |
| public class SlabImpl implements Slab { |
| private final long address; |
| private final int size; |
| |
| public SlabImpl(int size) { |
| this(size, false); |
| } |
| |
| /** |
| * This constructor is used by unit test to add padding to prevent intermittent combining of |
| * fragments during defragmentation. |
| */ |
| public SlabImpl(int size, boolean withPadding) { |
| this(AddressableMemoryManager.allocate(size + (withPadding ? 4 : 0)), size); |
| } |
| |
| public SlabImpl(long addr, int size) { |
| address = addr; |
| this.size = size; |
| } |
| |
| @Override |
| public int getSize() { |
| return size; |
| } |
| |
| @Override |
| public long getMemoryAddress() { |
| return address; |
| } |
| |
| @Override |
| public void free() { |
| AddressableMemoryManager.free(address); |
| } |
| |
| @Override |
| public String toString() { |
| return getClass().getSimpleName() + "{" |
| + "MemoryAddress=" + getMemoryAddress() |
| + ", Size=" + getSize() |
| + "}"; |
| } |
| } |