1 /* 2 * Copyright (C) 2015 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 com.android.camera.stats.profiler; 18 19 /** 20 * A guarding profile will only write messages to a writer if the 21 * time exceeds a given threshold. For mark() calls, it uses the 22 * time since last event, and for stop() calls it uses the total 23 * elapsed duration of the profile. 24 */ 25 public class GuardingProfile extends ProfileBase { 26 private final Writer mGuardWriter; 27 private final Writer mVerboseWriter; 28 private final int mMaxMillis; 29 30 public GuardingProfile(Writer writer, Writer verbose, String name,int maxDuration) { 31 super(name); 32 mGuardWriter = writer; 33 mVerboseWriter = verbose; 34 mMaxMillis = maxDuration; 35 } 36 37 @Override 38 protected void onStart() { 39 mVerboseWriter.write(format(0, "GUARD", "START")); 40 } 41 42 @Override 43 protected void onMark(double totalMillis, double lastMillis, String reason) { 44 if (lastMillis > mMaxMillis) { 45 mGuardWriter.write(format(totalMillis, "GUARD", lastMillis, reason)); 46 } else { 47 mVerboseWriter.write(format(totalMillis, "GUARD", lastMillis, reason)); 48 } 49 } 50 51 @Override 52 protected void onStop(double totalMillis, double lastMillis) { 53 if (totalMillis > mMaxMillis) { 54 mGuardWriter.write(format(totalMillis, "GUARD", "STOP")); 55 } else { 56 mVerboseWriter.write(format(totalMillis, "GUARD", "STOP")); 57 } 58 } 59 60 @Override 61 protected void onStop(double totalMillis, double lastMillis, String reason) { 62 onMark(totalMillis, lastMillis, reason); 63 onStop(totalMillis, lastMillis); 64 } 65 } 66
