| /* |
| * 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.Collections; |
| 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; |
| try { |
| clazz = Class.forName("java.lang.ApplicationShutdownHooks"); |
| } |
| catch (ClassNotFoundException e) { |
| // we can ignore this one |
| return Collections.emptyMap(); |
| } |
| return ReflectionUtil.getField(clazz, null, Map.class, "hooks"); |
| } |
| } |