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