| /* |
| * Copyright (C) 2009 The Guava Authors |
| * |
| * 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.google.common.util.concurrent.testing; |
| |
| import static com.google.common.util.concurrent.MoreExecutors.newDirectExecutorService; |
| |
| import com.google.common.annotations.GwtIncompatible; |
| import com.google.common.base.Preconditions; |
| import com.google.common.util.concurrent.ForwardingListenableFuture.SimpleForwardingListenableFuture; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import com.google.common.util.concurrent.ListenableScheduledFuture; |
| import com.google.common.util.concurrent.ListeningExecutorService; |
| import com.google.common.util.concurrent.ListeningScheduledExecutorService; |
| import java.util.Collection; |
| import java.util.List; |
| import java.util.concurrent.AbstractExecutorService; |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.Delayed; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| /** |
| * A ScheduledExecutorService that executes all scheduled actions immediately in the calling thread. |
| * |
| * <p>See {@link TestingExecutors#sameThreadScheduledExecutor()} for a full list of constraints. |
| * |
| * @author John Sirois |
| * @author Zach van Schouwen |
| */ |
| @GwtIncompatible |
| class SameThreadScheduledExecutorService extends AbstractExecutorService |
| implements ListeningScheduledExecutorService { |
| |
| private final ListeningExecutorService delegate = newDirectExecutorService(); |
| |
| @Override |
| public void shutdown() { |
| delegate.shutdown(); |
| } |
| |
| @Override |
| public List<Runnable> shutdownNow() { |
| return delegate.shutdownNow(); |
| } |
| |
| @Override |
| public boolean isShutdown() { |
| return delegate.isShutdown(); |
| } |
| |
| @Override |
| public boolean isTerminated() { |
| return delegate.isTerminated(); |
| } |
| |
| @Override |
| public boolean awaitTermination(long timeout, TimeUnit unit) throws InterruptedException { |
| Preconditions.checkNotNull(unit, "unit must not be null!"); |
| return delegate.awaitTermination(timeout, unit); |
| } |
| |
| @Override |
| public <T> ListenableFuture<T> submit(Callable<T> task) { |
| Preconditions.checkNotNull(task, "task must not be null!"); |
| return delegate.submit(task); |
| } |
| |
| @Override |
| public <T> ListenableFuture<T> submit(Runnable task, T result) { |
| Preconditions.checkNotNull(task, "task must not be null!"); |
| Preconditions.checkNotNull(result, "result must not be null!"); |
| return delegate.submit(task, result); |
| } |
| |
| @Override |
| public ListenableFuture<?> submit(Runnable task) { |
| Preconditions.checkNotNull(task, "task must not be null!"); |
| return delegate.submit(task); |
| } |
| |
| @Override |
| public <T> List<Future<T>> invokeAll(Collection<? extends Callable<T>> tasks) |
| throws InterruptedException { |
| Preconditions.checkNotNull(tasks, "tasks must not be null!"); |
| return delegate.invokeAll(tasks); |
| } |
| |
| @Override |
| public <T> List<Future<T>> invokeAll( |
| Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) |
| throws InterruptedException { |
| Preconditions.checkNotNull(tasks, "tasks must not be null!"); |
| Preconditions.checkNotNull(unit, "unit must not be null!"); |
| return delegate.invokeAll(tasks, timeout, unit); |
| } |
| |
| @Override |
| public <T> T invokeAny(Collection<? extends Callable<T>> tasks) |
| throws InterruptedException, ExecutionException { |
| Preconditions.checkNotNull(tasks, "tasks must not be null!"); |
| return delegate.invokeAny(tasks); |
| } |
| |
| @Override |
| public <T> T invokeAny(Collection<? extends Callable<T>> tasks, long timeout, TimeUnit unit) |
| throws InterruptedException, ExecutionException, TimeoutException { |
| Preconditions.checkNotNull(tasks, "tasks must not be null!"); |
| Preconditions.checkNotNull(unit, "unit must not be null!"); |
| return delegate.invokeAny(tasks, timeout, unit); |
| } |
| |
| @Override |
| public void execute(Runnable command) { |
| Preconditions.checkNotNull(command, "command must not be null!"); |
| delegate.execute(command); |
| } |
| |
| @Override |
| public ListenableScheduledFuture<?> schedule(Runnable command, long delay, TimeUnit unit) { |
| Preconditions.checkNotNull(command, "command must not be null"); |
| Preconditions.checkNotNull(unit, "unit must not be null!"); |
| return schedule(java.util.concurrent.Executors.callable(command), delay, unit); |
| } |
| |
| @Override |
| public <V> ListenableScheduledFuture<V> schedule( |
| final Callable<V> callable, long delay, TimeUnit unit) { |
| Preconditions.checkNotNull(callable, "callable must not be null!"); |
| Preconditions.checkNotNull(unit, "unit must not be null!"); |
| ListenableFuture<V> delegateFuture = submit(callable); |
| return new ImmediateScheduledFuture<V>(delegateFuture); |
| } |
| |
| private static class ImmediateScheduledFuture<V> extends SimpleForwardingListenableFuture<V> |
| implements ListenableScheduledFuture<V> { |
| private ExecutionException exception; |
| |
| protected ImmediateScheduledFuture(ListenableFuture<V> future) { |
| super(future); |
| } |
| |
| @Override |
| public V get(long timeout, TimeUnit unit) |
| throws InterruptedException, ExecutionException, TimeoutException { |
| Preconditions.checkNotNull(unit, "unit must not be null!"); |
| return get(); |
| } |
| |
| @Override |
| public long getDelay(TimeUnit unit) { |
| Preconditions.checkNotNull(unit, "unit must not be null!"); |
| return 0; |
| } |
| |
| @Override |
| public int compareTo(Delayed other) { |
| Preconditions.checkNotNull(other, "other must not be null!"); |
| return 0; |
| } |
| } |
| |
| @Override |
| public ListenableScheduledFuture<?> scheduleAtFixedRate( |
| Runnable command, long initialDelay, long period, TimeUnit unit) { |
| throw new UnsupportedOperationException("scheduleAtFixedRate is not supported."); |
| } |
| |
| @Override |
| public ListenableScheduledFuture<?> scheduleWithFixedDelay( |
| Runnable command, long initialDelay, long delay, TimeUnit unit) { |
| throw new UnsupportedOperationException("scheduleWithFixedDelay is not supported."); |
| } |
| } |