| /* |
| * Copyright (C) 2014 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.server.notification; |
| |
| import java.util.concurrent.Delayed; |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.ScheduledFuture; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| public abstract class RankingFuture |
| implements ScheduledFuture<NotificationManagerService.NotificationRecord> { |
| private static final long IMMEDIATE = 0l; |
| |
| private static final int START = 0; |
| private static final int RUNNING = 1; |
| private static final int DONE = 2; |
| private static final int CANCELLED = 3; |
| |
| private int mState; |
| private long mDelay; |
| protected NotificationManagerService.NotificationRecord mRecord; |
| |
| public RankingFuture(NotificationManagerService.NotificationRecord record) { |
| this(record, IMMEDIATE); |
| } |
| |
| public RankingFuture(NotificationManagerService.NotificationRecord record, long delay) { |
| mDelay = delay; |
| mRecord = record; |
| mState = START; |
| } |
| |
| public void run() { |
| if (mState == START) { |
| mState = RUNNING; |
| |
| work(); |
| |
| mState = DONE; |
| synchronized (this) { |
| notifyAll(); |
| } |
| } |
| } |
| |
| @Override |
| public long getDelay(TimeUnit unit) { |
| return unit.convert(mDelay, TimeUnit.MILLISECONDS); |
| } |
| |
| @Override |
| public int compareTo(Delayed another) { |
| return Long.compare(getDelay(TimeUnit.MILLISECONDS), |
| another.getDelay(TimeUnit.MILLISECONDS)); |
| } |
| |
| @Override |
| public boolean cancel(boolean mayInterruptIfRunning) { |
| if (mState == START) { // can't cancel if running or done |
| mState = CANCELLED; |
| return true; |
| } |
| return false; |
| } |
| |
| @Override |
| public boolean isCancelled() { |
| return mState == CANCELLED; |
| } |
| |
| @Override |
| public boolean isDone() { |
| return mState == DONE; |
| } |
| |
| @Override |
| public NotificationManagerService.NotificationRecord get() |
| throws InterruptedException, ExecutionException { |
| while (!isDone()) { |
| synchronized (this) { |
| this.wait(); |
| } |
| } |
| return mRecord; |
| } |
| |
| @Override |
| public NotificationManagerService.NotificationRecord get(long timeout, TimeUnit unit) |
| throws InterruptedException, ExecutionException, TimeoutException { |
| long timeoutMillis = unit.convert(timeout, TimeUnit.MILLISECONDS); |
| long start = System.currentTimeMillis(); |
| long now = System.currentTimeMillis(); |
| while (!isDone() && (now - start) < timeoutMillis) { |
| try { |
| wait(timeoutMillis - (now - start)); |
| } catch (InterruptedException e) { |
| now = System.currentTimeMillis(); |
| } |
| } |
| return mRecord; |
| } |
| |
| public abstract void work(); |
| } |