1 /* 2 * Copyright (C) 2013 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.ex.photo.util; 18 19 import android.os.Build; 20 21 /** 22 * Stand-in for {@link android.os.Trace}. 23 */ 24 public abstract class Trace { 25 26 /** 27 * Begins systrace tracing for a given tag. No-op on unsupported platform versions. 28 * 29 * @param tag systrace tag to use 30 * 31 * @see android.os.Trace#beginSection(String) 32 */ beginSection(String tag)33 public static void beginSection(String tag) { 34 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) { 35 android.os.Trace.beginSection(tag); 36 } 37 } 38 39 /** 40 * Ends systrace tracing for the most recently begun section. No-op on unsupported platform 41 * versions. 42 * 43 * @see android.os.Trace#endSection() 44 */ endSection()45 public static void endSection() { 46 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2) { 47 android.os.Trace.endSection(); 48 } 49 } 50 51 } 52