org.apache.flink.runtime.state.gemini.engine.rm.Finalizable Maven / Gradle / Ivy
/*
* 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.flink.runtime.state.gemini.engine.rm;
/**
* An object that can be finalized.
*/
public interface Finalizable {
/**
* Return a wrapper that can free internal resources of a {@link Finalizable}.
*/
FinalizableCleaner getCleaner();
boolean isFreed();
void doFree();
/**
* Return whether the objected can be freed synchronized.
* @return whether the objected can be freed synchronized.
*/
boolean canSyncFree();
/**
* If set seqID, then should wait this seq done.
*/
void setSeqID(long seqID);
/**
* Returns the seqID.
*
* @return
*/
long getSeqID();
/**
* Set this object should wait the seq ID. e.g. when in {@link org.apache.flink.runtime.state.gemini.engine.page.DataPage}.
*/
void setWaitSeqId();
}