| /* |
| * Copyright (C) 2019 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.google.android.car.multidisplaytest.ime; |
| |
| import android.os.Handler; |
| import android.util.Log; |
| import android.widget.TextView; |
| |
| import java.text.SimpleDateFormat; |
| import java.util.ArrayList; |
| import java.util.Date; |
| |
| /** |
| * Copied from GarageModeTestApp |
| * Use Handler to send and process messages in a queue |
| * Potentially use for multi-thread |
| */ |
| public final class Watchdog { |
| private static final String TAG = Watchdog.class.getSimpleName(); |
| // wait before trying to get new message from the queue and post it |
| private static final Integer DELAY = 500; // in millisecond |
| private static final Integer MAXQSIZE = 10000; |
| |
| private final TextView mView; |
| private final ArrayList<String> mEvents; |
| |
| private Handler mWatchdogHandler; |
| private Runnable mRefreshLoop; |
| |
| Watchdog(TextView view) { |
| mView = view; |
| mEvents = new ArrayList<>(); |
| } |
| |
| public void logEvent(String s) { |
| Date date = new Date(); |
| SimpleDateFormat dateFormat = new SimpleDateFormat("[yyyy-MM-dd hh:mm:ss]"); |
| mEvents.add(0, dateFormat.format(date) + " " + s); |
| |
| if (mEvents.size() > MAXQSIZE) { |
| mEvents.remove(mEvents.size() - 1); |
| } |
| } |
| |
| public synchronized void refresh() { |
| mView.setText(String.join("\n", mEvents)); |
| } |
| |
| public void start() { |
| Log.d(TAG, "Starting Watchdog"); |
| mEvents.clear(); |
| mWatchdogHandler = new Handler(); |
| mRefreshLoop = () -> { |
| refresh(); |
| mWatchdogHandler.postDelayed(mRefreshLoop, DELAY); |
| }; |
| mWatchdogHandler.postDelayed(mRefreshLoop, DELAY); |
| } |
| |
| public void stop() { |
| Log.d(TAG, "Stopping Watchdog"); |
| mWatchdogHandler.removeCallbacks(mRefreshLoop); |
| mWatchdogHandler = null; |
| mRefreshLoop = null; |
| } |
| } |