1 /*
2  * Copyright (C) 2021 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 android.car.builtin.os;
18 
19 import android.annotation.SystemApi;
20 import android.os.Trace;
21 
22 /**
23  * Helper for {@code Trace} related operations.
24  *
25  * @hide
26  */
27 @SystemApi(client = SystemApi.Client.MODULE_LIBRARIES)
28 public final class TraceHelper {
TraceHelper()29     private TraceHelper() {
30         throw new UnsupportedOperationException();
31     }
32 
33     /**
34      * {@code Trace tag} that should be used by car service. This is same with
35      * {@link Trace#TRACE_TAG_SYSTEM_SERVER}, so {code System Server} tracing should be enabled from
36      * trace tools to access these traces.
37      */
38     public static final long TRACE_TAG_CAR_SERVICE = Trace.TRACE_TAG_SYSTEM_SERVER;
39 
40     /**
41      * {@code Trace tag} that should be used by car evs service. This is same with
42      * {@link Trace#TRACE_TAG_CAMERA}, so {@code Camera} tracing should be enabled from
43      * trace tools to access these traces.
44      */
45     public static final long TRACE_TAG_CAR_EVS_SERVICE = Trace.TRACE_TAG_CAMERA;
46 }
47