/*
* 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 org.apache.ignite.IgniteCheckedException;
/**
* Allocates page ID's.
*/
public interface PageIdAllocator {
/** */
public static final byte FLAG_DATA = 1;
/** */
public static final byte FLAG_IDX = 2;
/** Max partition ID that can be used by affinity. */
public static final int MAX_PARTITION_ID = 65500;
/** Special partition reserved for index space. */
public static final int INDEX_PARTITION = 0xFFFF;
/**
* Allocates a page from the space for the given partition ID and the given flags.
*
* @param partId Partition ID.
* @return Allocated page ID.
*/
public long allocatePage(int cacheId, int partId, byte flags) throws IgniteCheckedException;
/**
* The given page is free now.
*
* @param cacheId Cache ID.
* @param pageId Page ID.
*/
public boolean freePage(int cacheId, long pageId) throws IgniteCheckedException;
}