1 /* 2 * Copyright (C) 2006 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package android.util; 18 19 import android.text.format.Time; 20 21 import java.io.FileDescriptor; 22 import java.io.PrintWriter; 23 import java.io.StringWriter; 24 import java.util.Iterator; 25 import java.util.LinkedList; 26 27 /** 28 * @hide 29 */ 30 public final class LocalLog { 31 32 private LinkedList<String> mLog; 33 private int mMaxLines; 34 private Time mNow; 35 36 public LocalLog(int maxLines) { 37 mLog = new LinkedList<String>(); 38 mMaxLines = maxLines; 39 mNow = new Time(); 40 } 41 42 public synchronized void log(String msg) { 43 if (mMaxLines > 0) { 44 mNow.setToNow(); 45 mLog.add(mNow.format("%H:%M:%S") + " - " + msg); 46 while (mLog.size() > mMaxLines) mLog.remove(); 47 } 48 } 49 50 public synchronized void dump(FileDescriptor fd, PrintWriter pw, String[] args) { 51 Iterator<String> itr = mLog.listIterator(0); 52 while (itr.hasNext()) { 53 pw.println(itr.next()); 54 } 55 } 56 } 57
