dubbo InternalRunnable 源码
dubbo InternalRunnable 代码
文件路径：/dubbo-common/src/main/java/org/apache/dubbo/common/threadlocal/InternalRunnable.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.dubbo.common.threadlocal;
/**
* InternalRunnable
* There is a risk of memory leak when using {@link InternalThreadLocal} without calling
* {@link InternalThreadLocal#removeAll()}.
* This design is learning from {@see io.netty.util.concurrent.FastThreadLocalRunnable} which is in Netty.
*/
public class InternalRunnable implements Runnable{
private final Runnable runnable;
public InternalRunnable(Runnable runnable){
this.runnable=runnable;
}
/**
* After the task execution is completed, it will call {@link InternalThreadLocal#removeAll()} to clear
* unnecessary variables in the thread.
*/
@Override
public void run() {
try{
runnable.run();
}finally {
InternalThreadLocal.removeAll();
}
}
/**
* Wrap ordinary Runnable into {@link InternalThreadLocal}.
*/
public static Runnable Wrap(Runnable runnable){
return runnable instanceof InternalRunnable?runnable:new InternalRunnable(runnable);
}
}
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