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 profiler creates new guarded profiles that
21  * will only write output messages if the profile time
22  * exceeds the threshold.
23  */
24 public class GuardingProfiler implements Profiler {
25     private static final int DEFAULT_GUARD_DURATION_MILLIS = 15;
26     private final Writer mGuardWriter;
27     private final Writer mVerboseWriter;
28     private final int mMaxDurationMillis;
29 
30     /** Create a new GuardingProfiler */
GuardingProfiler(Writer writer, Writer verbose)31     public GuardingProfiler(Writer writer, Writer verbose) {
32         this(writer, verbose, DEFAULT_GUARD_DURATION_MILLIS);
33     }
34 
35     /** Create a new GuardingProfiler with a given max duration. */
GuardingProfiler(Writer writer, Writer verbose, int maxDurationMillis)36     public GuardingProfiler(Writer writer, Writer verbose, int maxDurationMillis) {
37         mGuardWriter = writer;
38         mVerboseWriter = verbose;
39         mMaxDurationMillis = maxDurationMillis;
40     }
41 
42     @Override
create(String name)43     public Profile create(String name) {
44         return new GuardingProfile(mGuardWriter, mVerboseWriter, name,
45               mMaxDurationMillis);
46     }
47 
48     /** Start a new profile, but override the maxDuration */
create(String name, int maxDurationMillis)49     public Profile create(String name, int maxDurationMillis) {
50         return new GuardingProfile(mGuardWriter, mVerboseWriter, name,
51               maxDurationMillis);
52     }
53 }
54