| /* |
| * Copyright 2000-2012 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.concurrency; |
| |
| import org.jetbrains.annotations.NotNull; |
| |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Executor; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * Author: dmitrylomov |
| */ |
| public class FinallyFuture<V> implements AsyncFuture<V> { |
| private final DoOnce myFinallyBlock; |
| private final AsyncFuture<V> myInner; |
| |
| public FinallyFuture(@NotNull AsyncFuture<V> inner, @NotNull Runnable finallyBlock) { |
| myInner = inner; |
| myFinallyBlock = new DoOnce(finallyBlock); |
| } |
| |
| @Override |
| public boolean cancel(boolean mayInterruptIfRunning) { |
| boolean cancel = myInner.cancel(mayInterruptIfRunning); |
| if (cancel) { |
| myFinallyBlock.execute(); |
| } |
| return cancel; |
| } |
| |
| @Override |
| public boolean isCancelled() { |
| return myInner.isDone(); |
| } |
| |
| @Override |
| public boolean isDone() { |
| return myInner.isDone(); |
| } |
| |
| @Override |
| public V get() throws InterruptedException, ExecutionException { |
| try { |
| return myInner.get(); |
| } |
| finally { |
| myFinallyBlock.execute(); |
| } |
| } |
| |
| @Override |
| public void addConsumer(@NotNull Executor executor, @NotNull final ResultConsumer<V> consumer) { |
| myInner.addConsumer(executor, new ResultConsumer<V>() { |
| @Override |
| public void onSuccess(V value) { |
| try { |
| myFinallyBlock.execute(); |
| consumer.onSuccess(value); |
| } |
| catch (Throwable t) { |
| consumer.onFailure(t); |
| } |
| } |
| |
| @Override |
| public void onFailure(Throwable t) { |
| try { |
| myFinallyBlock.execute(); |
| } |
| catch (Throwable t1) { |
| t = t1; |
| } |
| consumer.onFailure(t); |
| } |
| }); |
| } |
| |
| @Override |
| public V get(long timeout, @NotNull TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException { |
| boolean timeoutOccurred = false; |
| try { |
| try { |
| return myInner.get(timeout, unit); |
| } |
| catch (TimeoutException t) { |
| timeoutOccurred = true; |
| throw t; |
| } |
| } |
| finally { |
| if (!timeoutOccurred) { |
| myFinallyBlock.execute(); |
| } |
| } |
| } |
| } |