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
17package 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 */
24public 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 */
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. */
36    public GuardingProfiler(Writer writer, Writer verbose, int maxDurationMillis) {
37        mGuardWriter = writer;
38        mVerboseWriter = verbose;
39        mMaxDurationMillis = maxDurationMillis;
40    }
41
42    @Override
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 */
49    public Profile create(String name, int maxDurationMillis) {
50        return new GuardingProfile(mGuardWriter, mVerboseWriter, name,
51              maxDurationMillis);
52    }
53}
54