| /* |
| * Copyright 2000-2009 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 com.intellij.openapi.util; |
| |
| import com.intellij.openapi.diagnostic.Logger; |
| import com.intellij.util.concurrency.Semaphore; |
| import com.intellij.util.ui.UIUtil; |
| import org.jetbrains.annotations.NotNull; |
| |
| import javax.swing.*; |
| import java.util.ArrayList; |
| import java.util.LinkedList; |
| import java.util.List; |
| |
| public class ShutDownTracker implements Runnable { |
| private static final Logger LOG = Logger.getInstance("#com.intellij.openapi.util.ShutDownTracker"); |
| private final List<Thread> myThreads = new ArrayList<Thread>(); |
| private final LinkedList<Thread> myShutdownThreads = new LinkedList<Thread>(); |
| private final LinkedList<Runnable> myShutdownTasks = new LinkedList<Runnable>(); |
| private volatile boolean myIsShutdownHookRunning = false; |
| |
| private ShutDownTracker() { |
| //noinspection HardCodedStringLiteral |
| Runtime.getRuntime().addShutdownHook(new Thread(this, "Shutdown tracker")); |
| } |
| |
| private static class ShutDownTrackerHolder { |
| private static final ShutDownTracker ourInstance = new ShutDownTracker(); |
| } |
| |
| @NotNull |
| public static ShutDownTracker getInstance() { |
| return ShutDownTrackerHolder.ourInstance; |
| } |
| |
| public static boolean isShutdownHookRunning() { |
| return getInstance().myIsShutdownHookRunning; |
| } |
| |
| @Override |
| public void run() { |
| myIsShutdownHookRunning = true; |
| |
| ensureStopperThreadsFinished(); |
| |
| for (Runnable task = removeLast(myShutdownTasks); task != null; task = removeLast(myShutdownTasks)) { |
| // task can change myShutdownTasks |
| try { |
| task.run(); |
| } |
| catch (Throwable e) { |
| LOG.error(e); |
| } |
| } |
| |
| for (Thread thread = removeLast(myShutdownThreads); thread != null; thread = removeLast(myShutdownThreads)) { |
| thread.start(); |
| try { |
| thread.join(); |
| } |
| catch (InterruptedException ignored) { |
| } |
| } |
| } |
| |
| public final void ensureStopperThreadsFinished() { |
| Thread[] threads = getStopperThreads(); |
| final long started = System.currentTimeMillis(); |
| while (threads.length > 0) { |
| Thread thread = threads[0]; |
| if (!thread.isAlive()) { |
| if (isRegistered(thread)) { |
| LOG.error("Thread '" + thread.getName() + "' did not unregister itself from ShutDownTracker."); |
| unregisterStopperThread(thread); |
| } |
| } |
| else { |
| final long totalTimeWaited = System.currentTimeMillis() - started; |
| if (totalTimeWaited > 3000) { |
| // okay, we are waiting fo too long already, lets stop everyone: |
| // in some cases, stopper thread may try to run readAction while we are shutting down (under a writeAction) and deadlock. |
| thread.interrupt(); |
| } |
| |
| try { |
| thread.join(100); |
| } |
| catch (InterruptedException ignored) { |
| } |
| } |
| threads = getStopperThreads(); |
| } |
| } |
| |
| private synchronized boolean isRegistered(@NotNull Thread thread) { |
| return myThreads.contains(thread); |
| } |
| |
| @NotNull |
| private synchronized Thread[] getStopperThreads() { |
| return myThreads.toArray(new Thread[myThreads.size()]); |
| } |
| |
| public synchronized void registerStopperThread(@NotNull Thread thread) { |
| myThreads.add(thread); |
| } |
| |
| public synchronized void unregisterStopperThread(@NotNull Thread thread) { |
| myThreads.remove(thread); |
| } |
| |
| public synchronized void registerShutdownThread(@NotNull Thread thread) { |
| myShutdownThreads.addLast(thread); |
| } |
| |
| public synchronized void registerShutdownThread(int index, @NotNull Thread thread) { |
| myShutdownThreads.add(index, thread); |
| } |
| |
| public synchronized void registerShutdownTask(@NotNull Runnable task) { |
| myShutdownTasks.addLast(task); |
| } |
| |
| public synchronized void unregisterShutdownTask(@NotNull Runnable task) { |
| myShutdownTasks.remove(task); |
| } |
| |
| private synchronized <T> T removeLast(@NotNull LinkedList<T> list) { |
| return list.isEmpty()? null : list.removeLast(); |
| } |
| |
| public static void invokeAndWait(boolean returnOnTimeout, boolean runInEdt, @NotNull final Runnable runnable) { |
| if (!runInEdt) { |
| if (returnOnTimeout) { |
| final Semaphore semaphore = new Semaphore(); |
| semaphore.down(); |
| new Thread(new Runnable() { |
| @Override |
| public void run() { |
| runnable.run(); |
| semaphore.up(); |
| } |
| }).start(); |
| semaphore.waitFor(1000); |
| } |
| else { |
| runnable.run(); |
| } |
| return; |
| } |
| |
| if (returnOnTimeout) { |
| final Semaphore semaphore = new Semaphore(); |
| semaphore.down(); |
| SwingUtilities.invokeLater(new Runnable() { |
| @Override |
| public void run() { |
| runnable.run(); |
| semaphore.up(); |
| } |
| }); |
| semaphore.waitFor(1000); |
| return; |
| } |
| |
| try { |
| UIUtil.invokeAndWaitIfNeeded(runnable); |
| } |
| catch (Exception e) { |
| LOG.error(e); |
| } |
| } |
| } |