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/*
* Copyright 2000-2014 JetBrains s.r.o.
*
* Licensed 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.jetbrains.idea.maven.server;
import com.intellij.util.ReflectionUtil;
import java.rmi.RemoteException;
import java.util.IdentityHashMap;
import java.util.Map;
public class MavenLeakDetector {
private IdentityHashMap<Thread, Thread> markedHooks = new IdentityHashMap<Thread, Thread>();
public MavenLeakDetector mark() {
markShutdownHooks();
return this;
}
private void markShutdownHooks() {
markedHooks.putAll(getShutdownHooks());
}
public void check() throws RemoteException {
checkShutdownHooks();
}
private void checkShutdownHooks() throws RemoteException {
IdentityHashMap<Thread, Thread> checkedHooks = new IdentityHashMap<Thread, Thread>(getShutdownHooks());
for (Thread t : markedHooks.values()) {
checkedHooks.remove(t);
}
for (Thread t : checkedHooks.values()) {
removeHook(t);
}
}
private void removeHook(Thread thread) throws RemoteException {
Runtime.getRuntime().removeShutdownHook(thread);
Maven3ServerGlobals.getLogger().print(String.format("ShutdownHook[%s] was removed to avoid memory leak", thread));
}
private Map<Thread, Thread> getShutdownHooks() {
Class clazz = null;
try {
clazz = Class.forName("java.lang.ApplicationShutdownHooks");
}
catch (ClassNotFoundException e) {
// we can ignore this one
}
return ReflectionUtil.getField(clazz, null, Map.class, "hooks");
}
}
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