/*
* 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.ignite.internal.pagemem;
import java.nio.ByteBuffer;
import org.apache.ignite.lifecycle.LifecycleAware;
/**
*/
public interface PageMemory extends LifecycleAware, PageIdAllocator, PageSupport {
/**
* @return Page size in bytes.
*/
public int pageSize();
/**
* @return Page size with system overhead, in bytes.
*/
public int systemPageSize();
/**
* @param pageAddr Page address.
* @return Page byte buffer.
*/
public ByteBuffer pageBuffer(long pageAddr);
/**
* @return Total number of loaded pages in memory.
*/
public long loadedPages();
}