| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * 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.android.dialer.common.concurrent; |
| |
| import com.google.common.util.concurrent.AsyncCallable; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import java.util.concurrent.Executor; |
| |
| /** |
| * Serializes execution of a set of operations. This class guarantees that a submitted callable will |
| * not be called before previously submitted callables have completed. |
| */ |
| public final class DialerFutureSerializer { |
| |
| /** Enqueues a task to run when the previous task (if any) completes. */ |
| public <T> ListenableFuture<T> submitAsync(final AsyncCallable<T> callable, Executor executor) { |
| // TODO(zachh): This is just a dummy implementation until we fix guava API level issues. |
| try { |
| return callable.call(); |
| } catch (Exception e) { |
| e.printStackTrace(); |
| } |
| return null; |
| } |
| } |